CN101200029B - Clip ring back judgement jig - Google Patents

Abstract

The invention provides a clamp for judging the watch back by using a simple mechanical structure, and the clasp ring is handed over to the clasp embedded jig. The clasp front and back judging jig (2) has a holding part (22) and a front and back judging part (21). The end surface (901) on one side in the axial direction of the snap ring (9) is a vertical surface, and the end surface (902) on the other side in the axial direction has a slope (92). When the front and back judging part (21) moves relative to the holding part (22) holding the snap ring (9), when one side abutting surface (211) coincides with the whole of the end surface (901) on one side in the axial direction, and the other side When the side abutting surface (212) fits with the entirety of the end surface (902) on the other side in the axial direction, it moves to an engaging position where it engages with a part of the snap ring (9). The snap ring front and back judging jig (2) slides the holding part (22) holding the snap ring (9) to the handover of the snap ring inserting jig (4) only when the front and back judging part (21) moves to the engaged position Location.

Description

Judgment jig for clasp case back

technical field

The present invention relates to a snap ring front and back judging jig for judging the front and back of a snap ring when the snap ring is inserted into a jig to transfer the snap ring.

Background technique

In functional parts such as automatic transmissions, a C-shaped snap ring having a notch is used in order to prevent axial misalignment of components arranged in a housing. In addition, in this snap ring, in order to form a vertical surface on one end surface in the axial direction and to prevent looseness after assembly, etc., a slope portion may be formed on the other end surface in the axial direction. At this time, in the housing, a vertical facing portion facing the vertical surface and an inclined facing portion facing the inclined portion are formed in the annular groove for fitting the snap ring.

Therefore, when fitting the snap ring into the ring groove formed in the above-mentioned housing, the vertical surface on one end surface in the axial direction faces the vertical opposite surface, and the inclined surface on the other end surface in the axial direction is correct. If the land is facing the face of the inclined surface, it is necessary to confirm and insert the front and back of the snap ring each time. However, when the front and back of the snap ring are confirmed only by the operator's visual observation, there is a risk that defective products of the above-mentioned functional components will be produced due to the operator's negligence.

In addition, Patent Document 1 discloses a snap ring assembly device. The snap ring assembly part is configured to freely swing and hold a plurality of swing arms arranged radially with respect to the base. Open and close multiple swing arms. In this snap ring assembly device, the snap ring is elastically reduced in diameter by holding claws in the plurality of swing arms, and after moving the plurality of swing arms into the fixed member, the plurality of swing arms are opened. Arm and assemble the snap ring in the snap ring groove.

However, in Patent Document 1, there is no study on assembling snap rings with different front and back shapes without wrongly installing the front and back.

Patent Document 1: Japanese Patent Laid-Open No. 2006-205320

Contents of the invention

The present invention is made in view of related problems in the past, and provides a snap ring front and back judging jig that can judge the front and back with a simple mechanical structure, and transfer the snap ring to the snap ring insertion jig.

The present invention is a clamp for judging the front and back of a snap ring, which is used for judging the front and back of the snap ring when the snap ring is handed over to the snap ring embedding jig for embedding the snap ring into an assembled part, and is characterized in that ,

The above-mentioned snap ring has a C-shape with a notch on a part of its circumferential direction, and the end surface on one side in the axial direction is a vertical surface, and has a slope on the other end surface in the axial direction,

The snap ring front and back judging jig has: a holding portion holding the snap ring; and a front and back judging portion that moves relative to the holding portion and engages with a part of the snap ring,

The front and back judging part has: one side abutment surface having a shape along one end surface of the above-mentioned axial direction of the above-mentioned snap ring; one side abutment surface,

When the front and back judging part moves relative to the holding part that holds the snap ring, when the front and back of the snap ring are correct, the abutment surface on the one side coincides with the entire end face on one side in the axial direction, and the other side When the abutting surface coincides with the whole of the end surface on the other side in the axial direction, it can move to an engaging position where it engages with a part of the snap ring,

Furthermore, only when the front-back judging part moves to the engaging position, the holding part holding the snap ring can be slid to a transfer position where the clip is fitted into the snap ring.

The jig for judging the front and back of the snap ring of the present invention can judge the front and back of the snap ring when handing over the snap ring to the snap ring embedding jig, and hand over the snap ring to the snap ring embedding jig without mistaking the front and back of the snap ring.

The clasp front and back judging jig has the above-mentioned holding part and the front and back judging part, and the front and back judging part is formed with: a side abutment surface having a shape along one side end face in the axial direction of the snap ring, and a side abutment surface having a shape along the snap ring. The other side abutting surface of the shape of the end surface on the other side in the axial direction of the ring.

When the front and back judging part moves relative to the above-mentioned holding part that holds the above-mentioned snap ring, when the front and back of the snap ring are correct, the abutment surface on one side coincides with the entire end surface of one side in the axial direction, and the abutment surface on the other side coincides with the shaft. When the entire end surface on the other side in the direction fits together, it can move to an engaging position where it engages with a part of the snap ring. At this time, the holding part holding the snap ring can be slid to the handover position to the snap ring fitting fixture, and after the front and back are reliably confirmed, the snap ring can be handed over to the snap ring fitting fixture.

On the other hand, when the front and back judging part moves relative to the holding part holding the snap ring, when the front and back of the snap ring is wrong, the abutment surface on one side faces a part of the end face on the other side in the axial direction, and the other side When the abutting surface faces a part of the end surface on one side in the axial direction, it cannot move to the above-mentioned engaging position. At this time, the holding portion holding the snap ring cannot be slid to the transfer position where the snap ring is fitted with the jig. Therefore, the operator moves the front-back judging part again after the front-back is correctly held by the holding part and corrected.

Thus, in the present invention, the snap ring is handed over to the snap ring fitting jig only when the front and back are correct. In addition, in the present invention, when judging the front and back of the clasp, no electrical control such as a sensor is required, and the front and back can be judged extremely easily with a simple structure.

Therefore, according to the jig for judging the front and back of the snap ring of the present invention, the front and back can be judged using a simple mechanical structure, and the snap ring can be handed over to the snap ring fitting jig. In addition, according to the snap ring fitting jig, it is possible to insert the front and back of the snap ring into the assembled part without fail and stably.

Description of drawings

FIG. 1 is a front view showing a snap ring assembly jig in Embodiment 1. FIG.

FIG. 2 is a side view showing a snap ring assembly jig in Embodiment 1. FIG.

FIG. 3 is a plan view showing a snap ring assembly jig in Embodiment 1. FIG.

FIG. 4 is a plan view showing a snap ring in Example 1. FIG.

FIG. 5 is a cross-sectional view showing a snap ring in Example 1. FIG.

FIG. 6 is an explanatory plan view showing an assembled component (A/T housing) in Embodiment 1. FIG.

FIG. 7 is a partially enlarged cross-sectional explanatory view showing an assembled component (A/T housing) in Embodiment 1. FIG.

8 is an explanatory plan view showing the clasp front and back judging jig in Example 1 in a state where the base portion of the front and back judging jig is in a fixed position.

9 is an explanatory plan view showing the clasp front and back judging jig in Example 1 in a state where the base portion of the front and back judging jig is at the delivery position.

10 is an explanatory front view showing the clasp front and back judging jig in Example 1 in a state where the base portion of the front and back judging jig is in a fixed position.

FIG. 11 is an explanatory side view showing a snap ring front and back judging jig in Embodiment 1. FIG.

FIG. 12 is an enlarged explanatory plan view showing the snap ring front and back judging jig in Embodiment 1. FIG.

13 is an explanatory plan view showing the snap ring front and back judging jig in a state where the slide fixing lever is engaged with the stopper in the first embodiment.

14 is an explanatory plan view showing the snap ring front and back judging jig in the state where the front and back judging part is slid to the engaged position and the engagement of the sliding fixing rod with respect to the stopper is released, in the first embodiment.

15 is an explanatory plan view showing the snap ring front and back judging jig in the state where the front and back judging part has not slid to the engaging position and the engagement of the sliding fixing rod with respect to the stopper has not been released in the first embodiment.

FIG. 16 is an explanatory front view showing enlarged the periphery of the front and back judging portion in the first embodiment.

FIG. 17 is an explanatory front view showing enlarged the periphery of the front and back judging portion in the state of sliding to the engaging position in the first embodiment.

Fig. 18 is an explanatory front view showing enlarged the periphery of the front and back judging part in the state not slid to the engaging position in the first embodiment.

19 is an explanatory side view showing the snap ring fitting jig in a state engaged with the holding portion of the snap ring front and back judging jig in Example 2. FIG.

20 is an explanatory side view showing a snap ring fitting jig in a state of being inserted into an assembly hole of a component to be assembled in Example 2. FIG.

21 is an explanatory side view showing a snap ring fitting jig in a state of being inserted into an assembly hole of a component to be assembled in Example 2. FIG.

FIG. 22 is an explanatory plan view showing a snap ring fitting jig in Example 2. FIG.

FIG. 23 is an enlarged side explanatory view showing the snap ring fitting jig in a state engaged with the holding portion of the snap ring front and back judging jig in Example 2. FIG.

24 is an enlarged cross-sectional explanatory view showing a chuck portion and a push rod portion in which a snap ring is fitted into a jig in Example 2. FIG.

FIG. 25 is an enlarged cross-sectional explanatory view showing a push rod portion where a snap ring is fitted into a jig in Example 2. FIG.

26 is an explanatory plan view showing a chuck portion and a push rod portion in which the snap ring is fitted into the jig in Example 2. FIG.

27 is an explanatory cross-sectional view showing a chuck portion in which a snap ring is fitted into a jig in Example 2. FIG.

28 is an explanatory plan view showing a chuck portion and a push rod portion of the snap ring fitting jig in a state of being inserted into the assembly hole of the component to be assembled in Example 2. FIG.

29 is a cross-sectional explanatory view showing a state in which the snap ring is pushed out from the chuck portion by the push rod portion and fitted into the ring groove in the assembly hole of the component to be assembled in Embodiment 2.

The symbols are explained as follows:

1... snap ring assembly device; 11... stand; 12... loading table; 13... moving device; 16... limit block (limit cross bar); 2... snap ring gauge Back judging jig; 21...the judging part of the back of the watch (the judging block of the back of the watch); 201...the engaging position; 210...the groove for judging; 211...the abutting surface on one side; 212...the other One side abutting surface; 214...operating part; 22...holding part; 23...positioning block; 231...inclined surface; position; 302...handover position; 31...sliding fixing rod; 32...connecting rod; 33...operating part; 4...snap ring embedded in the fixture; 41...embedded in the base of the fixture; 5... Chuck part; 51... Chuck seat; 511... Rotating fulcrum part; 52... Rotating lever; 521... Chuck claw; 53... Rotating operation part; 6.. .Push rod part; 61...Push block; 611...Extrude the front face; 62...Sliding plate; 8...Assembled parts (A/T shell); 81...Assembly hole; 82 ...ring groove; 821...vertical opposite surface; 822...inclined surface (opening side end surface); 83...depth direction groove; 85...component; 9...clasp ring; 91...notch portion; 911...both ends; 901...end face on one side in the axial direction; 902...end face on the other side in the axial direction; 92...inclined part; 93...middle part.

Detailed ways

Preferred embodiments of the present invention described above will be described.

In the present invention, it is preferable that the above-mentioned holding part has a concave shape in which the above-mentioned snap ring is fitted and placed, and a positioning block is arranged on the holding part so as to be slidable in the radial direction of the holding part, and the positioning block and the above-mentioned The above-mentioned notch portion in the snap ring is engaged from the inner peripheral side, and the positioning of the notch portion in the circumferential direction is performed, and the above-mentioned positioning block preferably has a pair of inclined surfaces whose circumferential width gradually decreases toward the outside in the radial direction so as to align with the above-mentioned notch. The positioning block is engaged from the inner peripheral side, and the positioning block is urged outward in the radial direction by the urging device (claim 2).

In this case, when the snap ring is held on the holding portion by the positioning block, the orientation of the notch portion of the snap ring can be reliably determined. In addition, when the snap ring is handed over to the snap ring fitting jig, when the snap ring fitting jig elastically deforms the snap ring to reduce its diameter, the positioning pieces are pressed by both ends of the notch portion constituting the snap ring, while the The urging device elastically deforms and slides radially inward, thereby stably maintaining the orientation of the snap ring.

In addition, the above-mentioned holding part and the above-mentioned front-back judging part may be arranged on a base part that can slide in the horizontal direction relative to the stand, and the base part can be fixed to the above-mentioned retaining part by fixing the snap ring to the above-mentioned holding part. position, and the above-mentioned transfer position, the above-mentioned front-back judging part is a front-back judging block that forms the above-mentioned one side abutment surface and the above-mentioned other side abutment surface up and down, and the above-mentioned base part has: a sliding fixing rod, which The above-mentioned fixed position and the above-mentioned transfer position are engaged with the limit block provided on the above-mentioned stand to fix the sliding of the above-mentioned base part; the connecting rod is engaged with the above-mentioned front and back judging block to make the above-mentioned sliding fixing rod slide, When the clasp front and back judging jig moves the front and back judging block to the engaging position, the engagement of the sliding fixing rod to the limiting block is released through the connecting rod (technical solution 3).

At this time, when the front and back judging block can be moved to the engaged position with respect to the holding portion holding the snap ring, the base portion on which the holding portion and the front and back judging block are equipped can be moved to the engagement position by using the sliding fixing rod and the connecting rod. Easily slides into handover position against snap ring insert fixture. In addition, the mechanical structure can be easily configured so that the holding part can be slid to the transfer position to the snap ring fitting jig only when the front and back judging part moves to the engaging position by using the sliding fixing rod and the connecting rod.

In addition, it may be configured as follows: on the above-mentioned front and back judging block and the above-mentioned base part, an operating part operated by an operator is respectively provided, and the front and back judging block and the base part are slide-operated through the above-mentioned respective operating parts (technical Option 4).

At this time, according to the manual operation of the operator, the judgment block and the base part of the case back can be slid and operated, and the case back can be judged without using a driving source such as electricity or fluid, and the snap ring can be handed over to the snap ring fitting jig.

In addition, it is preferable that the snap ring is fitted into a jig, has a chuck portion for clamping the outer periphery of the snap ring, and a push rod portion for pushing out the snap ring in a state clamped by the chuck, and the chuck portion has multiple a plurality of chuck claws for clamping the outer periphery of the above-mentioned snap ring, and the plurality of chuck claws are arranged at a plurality of places in the circumferential direction of the snap ring including both ends of the above-mentioned cutout portion constituting the above-mentioned snap ring. On the clamping position (technical scheme 5).

At this time, the snap ring is inserted into the jig, and the snap ring can be easily received from the holding portion in the snap ring front and back judging jig through the plurality of chuck claws on the chuck portion. In addition, the snap ring is embedded in the jig, and the snap ring clamped by the plurality of chuck jaws can be stably pushed out toward the assembled part through the push rod part.

In addition, the plurality of chuck claws clamp the two ends of the cutout portion constituting the snap ring in the circumferential direction of the snap ring, and the snap ring can be inserted into the jig to reduce the diameter of the snap ring. Elastically deforms and clamps it stably.

In addition, the above-mentioned to-be-assembled part is the casing of the automatic transmission, and the above-mentioned snap ring is preferably fitted into a ring groove formed in the circumferential direction in the above-mentioned casing, and prevents axial displacement of the constituent parts of the above-mentioned automatic transmission. (technical scheme 6).

At this time, the snap ring can be inserted into the ring groove in the casing of the automatic transmission, and the front and back can be inserted stably without error.

【Example】

(Example 1)

Next, an embodiment related to the jig for judging the front and back of the snap ring of the present invention will be described with reference to the accompanying drawings.

As shown in Fig. 1 and Fig. 8 to Fig. 12, the snap ring front and back judging jig 2 of this example is a jig for judging the front and back of the snap ring 9 when the snap ring 9 is handed over to the snap ring inserting jig 4. In addition, the snap ring fitting jig 4 is a jig for fitting the snap ring 9 into the component to be assembled 8 .

As shown in Figures 4 and 5, the snap ring 9 of this example has a C-shape with a notch 91 in a part of its circumferential direction, and the end surface 901 on one side in the axial direction is a vertical surface, and the end surface 901 on the other side in the axial direction is vertical. 902 has a sloped portion 92 thereon. The slope portion 92 is formed to incline so that the thickness of the snap ring 9 decreases radially outward. In addition, at both end portions 911 of the notch portion 91 constituting the snap ring 9 , there are formed removal holes 912 used when removing the snap ring 9 .

As shown in FIGS. 12 and 16 , the snap ring front and back judging jig 2 has a holding portion 22 holding the snap ring 9 , and a front and back judging portion 21 that moves relative to the holding portion 22 and engages with a part of the snap ring 9 . As shown in FIG. 16 , the front and back judging portion 21 has: one side abutment surface 211 having a shape along one end surface 901 in the axial direction of the snap ring 9 ; the other side abutment surface 212 having a shape along the snap ring 9 The shape of the end face 902 on the other side in the axial direction of the ring 9 .

As shown in FIG. 17 , when the front and back judging part 21 moves relative to the holding part 22 holding the snap ring 9 , when the front and back of the snap ring 9 are correct, and the abutment surface 211 on one side coincides with the end face 901 on one side in the axial direction as a whole, Furthermore, when the other side abutting surface 212 fits with the whole of the other end surface 902 in the axial direction, it can move to the engagement position 201 where it engages with a part of the snap ring 9 . In addition, as shown in FIG. 9 and FIG. 10 , the clasp front and back judging jig 2 is configured so that only when the front and back judging part 21 moves to the engagement position 201 , the holding part 22 holding the clasp 9 can be slid to the mating position. The ring fits into the handover location 302 of the clamp 4 .

Next, the snap ring front and back judging jig 2 of this example will be described in detail with reference to FIGS. 1 to 18 and 29 .

As shown in FIGS. 6 and 7 , the assembled component 8 of this example is a casing 8 of an automatic transmission (hereinafter, referred to as A/T). In addition, the snap ring 9 of this example is a member that fits into a circumferential ring groove 82 formed in the housing 8 and prevents axial displacement of the A/T component 85 . The constituent member 85 of this example is a hub member in which the outer ring of the one-way clutch is press-fitted into the inner peripheral hole, and the outer peripheral edge is spline-fitted to the inner periphery of the case. In addition, the constituent parts 85, in addition, may be drum parts for multi-plate brakes, center support (center support/intermediate wall) fixed to the housing 8, etc., and require high positioning accuracy in the axial direction relative to the housing 8. parts.

In the assembly hole 81 of the case 8, a ring groove 82 is formed along the circumferential direction thereof. In this ring groove 82 , on the rear side of the assembly hole 81 , there is formed a vertical facing portion 821 perpendicular to the direction in which the assembly hole 81 is formed and facing the vertical surface (end surface on one side in the axial direction) 901 of the snap ring 9 . , on the opening side of the assembly hole 81, an inclined facing portion 822 is formed that is inclined relative to the vertical facing portion 821 and faces the inclined portion 92 of the snap ring 9. In addition, in the assembly hole 81 , along the formation direction of the assembly hole 81 , depth direction grooves 83 are formed at a plurality of places in the circumferential direction of the assembly hole 81 .

As shown in FIG. 29 , when the snap ring 9 is fitted into the ring groove 82 , the component 85 is assembled in the housing 8 . In addition, in this example, when fitting the snap ring 9 into the ring groove 82 , the vertical surface (end face on one side in the axial direction) 901 of the snap ring 9 abuts against the surface of the component 85 , and the slope portion of the snap ring 9 92 abuts against the inclined surface 822 of the ring groove 82 . Thus, the component of the reaction force in the axial direction (vertical direction in FIG. 29 ) of the reaction force of the force applied to the inclined surface portion 822 of the groove 82 for the ring by the inclined surface portion 92 of the snap ring 9 can make the vertical surface of the snap ring 9 901 is tightly bonded to the surface of the component 85 to ensure high positioning accuracy.

As shown in FIGS. 1 to 3 , the snap ring front and back judging jig 2 of this example constitutes a snap ring assembly device 1 together with a snap ring inserting jig 4 for inserting the snap ring 9 into the component to be assembled 8 . Both the snap ring front and back judging jig 2 and the snap ring fitting jig 4 are operated manually by an operator without using a driving source such as electricity or fluid.

The snap ring assembly device 1 has: a mounting table 12 on which an A/T case 8 is placed as a component to be assembled 8 ; 13 ; the stand 11 for fixing the mounting table 12 , the moving device 13 , and the jig 2 for judging the front and back of the snap ring.

The mounting table 12 of this example is configured to mount the A/T case 8 facing upward toward the opening side of the assembly hole 81 . The moving device 13 of this example is configured to move the snap ring fitting jig 4 up and down, and has: an fitting jig base portion 41 (refer to FIG. 19 ) to which the snap ring fitting jig 4 is fixed; The guide part 14 for moving the jig base part 41 ; the balance part 15 that reduces the gravitational force generated by the snap ring fitting jig 4 and the fitting jig base part 41 to easily move the snap ring fitting jig 4 and the fitting jig base part 41 .

As shown in FIGS. 8 to 10 , the balance part 15 of this example is constituted as follows. One end of the metal wire 151 is installed on the embedded jig base part 41, and a counterweight 152 is installed on the other end of the metal wire 151, and is passed through a plurality of The pulley 153 balances the gravitational force acting on the snap ring fitting jig 4 and the fitting jig base part 41 and the gravitational force acting on the counterweight 152 .

As shown in FIG. 12 , the holding portion 22 in the snap ring front and back judging jig 2 of this example is configured to guide the outer circumference of the snap ring 9 . In the case of the snap ring 9 , the snap ring is fitted into a portion of the jig 4 where the chuck claws 521 of the chuck portion 5 face each other, and a relief portion 221 for avoiding interference with the chuck claws 521 is formed.

As shown in FIGS. 11 and 12 , the holding portion 22 has a concave shape in which the snap ring 9 is fitted and placed thereon. On the holding part 22, a positioning block 23 is arranged so as to be slidable in the radial direction of the holding part 22, and the fixed ring is inserted into a jig and delivered.

In addition, it is preferable that the snap ring is fitted into a jig, has a chuck portion for clamping the outer periphery of the snap ring, and a push rod portion for pushing out the snap ring in a state clamped by the chuck, and the chuck portion has multiple a plurality of chuck claws for clamping the outer periphery of the above-mentioned snap ring, and the plurality of chuck claws are arranged at a plurality of places in the circumferential direction of the snap ring including both ends of the above-mentioned cutout portion constituting the above-mentioned snap ring. On the clamping position (technical scheme 5).

At this time, the snap ring is inserted into the jig, and the snap ring can be easily received from the holding portion in the snap ring front and back judging jig through the plurality of chuck claws on the chuck portion. In addition, the snap ring is embedded in the jig, and the snap ring clamped by the plurality of chuck jaws can be stably pushed out toward the assembled part through the push rod part.

In addition, the plurality of chuck claws clamp the two ends of the cutout portion constituting the snap ring in the circumferential direction of the snap ring, and the snap ring can be inserted into the jig to reduce the diameter of the snap ring. Elastically deforms and clamps it stably.

In addition, the above-mentioned to-be-assembled part is the casing of the automatic transmission, and the above-mentioned snap ring is preferably fitted into a ring groove formed in the circumferential direction in the above-mentioned casing, and prevents axial displacement of the constituent parts of the above-mentioned automatic transmission. (technical scheme 6).

At this time, the snap ring can be inserted into the ring groove in the casing of the automatic transmission, and the front and back can be inserted stably without error.

【Example】

(Example 1)

Next, an embodiment related to the jig for judging the front and back of the snap ring of the present invention will be described with reference to the accompanying drawings.

As shown in Fig. 1 and Fig. 8 to Fig. 12, the snap ring front and back judging jig 2 of this example is a jig for judging the front and back of the snap ring 9 when the snap ring 9 is handed over to the snap ring inserting jig 4. In addition, the snap ring fitting jig 4 is a jig for fitting the snap ring 9 into the component to be assembled 8 .

As shown in Figures 4 and 5, the snap ring 9 of this example has a C-shape with a notch 91 in a part of its circumferential direction, and the end surface 901 on one side in the axial direction is a vertical surface, and the end surface 901 on the other side in the axial direction is vertical. 902 has a sloped portion 92 thereon. The slope portion 92 is formed to incline so that the thickness of the snap ring 9 decreases radially outward. In addition, the rod 31 is fixed by sliding on the notch portion 91 constituting the snap ring 9 . One end and the other end of the connecting rod 32 are respectively formed with a long groove 321, the long groove 321 on one end engages with the pin 213 arranged on the front and back judging block 21, and the long groove 321 on the other end engages with the pin 213 arranged on the slide fixing The pin 312 on the rod 31 engages.

As shown in FIGS. 8 and 13 , the front and back judging block 21 of this example is configured to slide along the sliding direction of the front and back judging jig base portion 33 . The sliding fixing bar 31 of this example is configured to slide in a direction perpendicular to the sliding direction. The connecting rod 32 has an L shape, and is supported by the rotation fulcrum part 222 at the corner part of the L shape.

In addition, as shown in FIG. 14, the connecting rod 32 is rotated by the action of sliding the front and back judging block 21 in the sliding direction, and the sliding fixing rod 31 is slid in a direction perpendicular to the sliding direction through this rotation, so that the sliding fixing can be released. The engagement of the rod 31 relative to the limit block 16 .

As shown in Figures 10 and 11, the limit block 16 of this example is composed of a long-shaped limit bar 16 arranged along the horizontal direction of the platform 11. The end surface of the rod 16 in the longitudinal direction locks the end of the sliding fixing rod 31 and is slidably fixed at the fixing position 301 or the transfer position 302 .

In addition, as shown in FIG. 9 , on the front and back judging block 21 and the front and back judging jig base part 3 , operation parts 214 and 33 to be operated by a worker are respectively provided. The front and back judging block 21 and the front and back judging jig base part 3 are configured to be slide-operated by the respective operation parts 214 and 33 .

As shown in FIG. 9 and FIG. 10 , the front-back judging jig base portion 3 is configured to be reset to the fixed position 301 by the reset device 34 after being slid to the transfer position 302 by the operator. The resetting device 34 of this example is constituted by installing the front and back judging jig base part 3 on one end of the metal wire 341, and installing a counterweight 342 on the other end of the metal wire 341, and using a plurality of pulleys 343 to move the front and back judging jig to the bottom of the metal wire 341. The base part 3 is stretched toward the fixed position 301 .

The snap ring front and back judging jig 2 of this example is to judge the front and back of the snap ring 9 when the snap ring 9 is handed over to the snap ring embedding jig 4 , and can hand over the snap ring 9 to the snap ring embedding jig 4 front and back without error.

As shown in FIGS. 12 and 13 , when the operator fixes the snap ring 9 on the holding portion 22 and judges the front and back of the snap ring 9 , the front and back judging block 21 is slid relative to the holding portion 22 through the operation portion 214 . At this time, as shown in FIG. 17 , in the state where the front and back of the snap ring 9 fixed to the holding portion 22 are correct, the one-side abutment surface 211 of the front-back judging block 21 and the end face of the snap ring 9 in the axial direction 901 as a whole, and when the abutment surface 212 on the other side of the judgment block 21 on the front and back coincides with the end face 902 on the other side in the axial direction of the snap ring 9 as a whole, the judging block 21 on the front and back can be slid to the side of the snap ring 9. Partially engaged engaging position 201 .

In addition, as shown in FIG. 14 , when the front and back judging block 21 is slid to the engagement position 201, the above-mentioned connecting rod 32 rotates, and the engagement state of the sliding fixing rod 31 relative to the limit block 16 is released along with the rotation. . Thus, the front and back judging jig base 3 can slide, and the operator can slide the front and back judging jig base 3 from the fixing position 301 to the delivery position 302 through the operation part 33 .

Therefore, as shown in FIGS. 1 and 9 , the holding portion 22 holding the snap ring 9 is slid to the transfer position 302 , and the holding portion 22 can be made to face the chuck portion 5 in the snap ring insertion jig 4 . In this way, the operator can send the snap ring 9 to the snap ring fitting jig 4 after reliably confirming that the front and back of the snap ring 9 fixed to the holding portion 22 are correct.

On the other hand, as shown in FIG. 18 , when the operator slides the front and back judging block 21 relative to the holding portion 22, the front and back of the snap ring 9 are turned upside down, and the abutting surface 211 of one side of the front and back judging block 21 is in contact with the snap ring 9. When a part of the end surface 902 on the other side in the axial direction of the front and back side is opposite, and the other side abutment surface 212 of the front and back judging block 21 is opposite to a part of the end surface 901 on one side in the axial direction of the snap ring 9, the front and back judging block cannot be positioned. 21 slides to the snap position 201. At this time, as shown in FIG. 15 , the connecting rod 32 does not rotate, and the engaged state of the sliding fixing rod 31 relative to the limit block 16 cannot be released.

Accordingly, the operator cannot slide the front and back judging jig base 3 , and can recognize that there is a mistake in the front and back of the snap ring 9 provided on the holding portion 22 .

Afterwards, the operator changes the front and back of the snap ring 9, fixes the snap ring 9 to the holding portion 22 correctly and corrects it, and then slides the front and back judging block 21 again.

In this way, in this embodiment, only when the front and back are correct, the snap ring 9 can be handed over to the snap ring insertion jig 4 . In addition, in this example, when judging the front and back of the snap ring 9, the front and back can be judged extremely simply by utilizing the mechanical structure without using electrical control such as a sensor. In addition, in this example, without any power source, various sliding operations of the front and back judging block 21 and the front and back judging jig base portion 3 can be performed manually by an operator.

Therefore, according to the snap ring front and back judging jig 2 of this example, the front and back can be judged by a simple mechanical structure, and the snap ring 9 can be handed over to the snap ring fitting jig 4 . Furthermore, by using the snap ring fitting jig 4 , the snap ring 9 can be stably inserted into the ring groove 82 of the A/T case 8 without any mistakes.

(Example 2)

In this example, the above-mentioned snap ring fitting jig 4 will be described with reference to FIGS. 19 to 29 in particular.

As shown in Fig. 1 and Fig. 19 to Fig. 22, the snap ring fitting fixture 4 of this example is used to be inserted into the ring groove 82 formed in the circumferential direction in the assembling hole 81 of the assembled part 8, and has a The notch 91 is a clamp for the C-shaped snap ring 9 . In the assembly hole 81 of the component to be assembled 8 of this example, along the depth direction perpendicular to the peripheral direction of the assembly hole 81 , a plurality of depth direction grooves 83 in the circumferential direction of the assembly hole 81 are formed.

As shown in FIGS. 24 and 28 , the snap ring inserting jig 4 has a chuck portion 5 for clamping the outer periphery of the snap ring 9 and a push rod portion for pushing out the snap ring 9 clamped by the chuck portion 5 . 6. The chuck part 5 has a plurality of chuck claws 521 for clamping the outer circumference of the snap ring 9, and each chuck claw 521 is formed so as to be able to clamp the outer circumference of the snap ring 9 while being kept inserted into the groove 83 in the depth direction. The shape of the state.

In addition, as shown in FIGS. 26 and 27 , a plurality of chuck claws 521 are provided at multiple places in the circumferential direction of the snap ring 9 including both end portions 911 of the notch portion 91 constituting the snap ring 9 . in the clamping position.

As shown in FIG. 25, in the push-out front end surface 611 of the push-out snap ring 9 of the push rod portion 6, the middle portion 93 (see FIG. 4 ) on the side opposite to the notch portion 91 of the snap ring 9 abuts. The portion 611A is formed most prominently. In addition, the snap ring inserting jig 4 is configured so that, as shown in FIG. 28 , the positions of the front end faces of the plurality of chuck claws 521 coincide with the positions of the opening side end faces 822 of the ring groove 82 , and as shown in FIG. The ejection front end face 611 in the portion 6 first pushes the snap ring 9 out from the middle portion 93 .

As shown in Figures 26 and 27, the plurality of chuck jaws 521 of this example include: the first chuck jaws 521A that clamp both ends 911 of the notch 91 that constitutes the snap ring 9; A plurality of second chuck claws 521B for clamping the remaining parts in the circumferential direction. The second chuck claws 521B of this example are arranged at four places at approximately equal intervals except for the portion clamped by the first chuck claws 521A.

In addition, the amount of movement of the first chuck claw 521A relative to the snap ring 9 may be larger than the amount of movement of the second chuck claw 521B relative to the snap ring 9 . In addition, the amount of elastic deformation of the snap ring 9 elastically deformed by the first chuck claws 521A ( Clamping deformation) is formed larger. As a result, the snap ring 9 can be stably clamped by clamping it most strongly around the notch portion 91 . In addition, as a method of increasing the amount of movement of the first chuck claw 521A relative to the snap ring 9, for example, as shown in FIG. Insert the compensation sheet 512 to easily carry out.

As shown in FIGS. 19 to 21 , the snap ring fitting jig 4 of this example is configured to descend into the assembly hole 81 in the housing 8 of the A/T placed on the mounting table 12 .

The snap ring of this example is fitted into the chuck portion 5 of the jig 4 and is arranged facing the main base 57 that advances toward the assembly hole 81 of the component to be assembled 8 . In addition, the chuck part 5 has: a chuck base 51 fixed relative to the main base 57; a plurality of rotating rods 52 rotatably arranged relative to the chuck base 51; A rotating operation part 53 engaged with a rotating lever 52 .

As shown in FIGS. 23 and 24 , each pivot lever 52 has an L shape, and is rotatably supported on a corner portion of the L shape relative to a pivot point portion 511 formed on the chuck base 51 . The chuck claw 521 is formed on the lower end of the swing arm extending downward on the pivot lever 52 , and the pivot operation member 53 engages with the end of the swing arm extending inward on the pivot lever 52 .

In addition, in Fig. 23, Fig. 24, Fig. 28, etc., for the convenience of understanding, relative to the central axis of the rotating operation member 53 (the center position of the chuck part 5 and the push rod part 6), the chuck is shown on the left side. The rotation lever 52 of the claw 521 shows the push rod part 6 on the right side.

As shown in Figure 19 and Figure 20, the main base 57 embedded in the clamp 4 is provided with a rotating handle 54 that can be operated by the operator, and the rotating action of the rotating handle 54 is transmitted through a plurality of power transmission parts 581. , 582 transmits the ball screw unit 55 to the rotation operation member 53 . The ball screw unit 55 includes a ball screw 551 coupled in the axial direction of the rotational operation member 53 , and a nut 552 fixed to the main base 57 while being screwed to the ball screw 551 .

In addition, the clamping and unclamping operations of the chuck unit 5 in this example are performed by the operator turning the rotary handle 54 . The rotational operation member 53 of this example is connected in the axial direction of the ball screw 551, and the chuck base 51 is fixed to the main base 57 via the plurality of shafts 56 in a rotationally locked state. On the main base 57, a nut 552 threadedly coupled with a ball screw 551 is fixed.

In addition, as shown in FIGS. 20 and 22 , the rotating handle 54 is rotatable around a rotating fulcrum 571 provided on the main base 57 and is fixed to a first gear 581 rotatable relative to the rotating fulcrum 571 . The first gear 581 meshes with the second gear 582 , and the second gear 582 is fixed to the ball screw 551 .

As shown in FIG. 19 , the second gear 582 moves up and down in the axial direction by the rotation of the ball screw 551 . Therefore, the second gear 582 has a thicker tooth width (width in the vertical direction in FIG. 19 ) than the first gear 581 so as not to lose its mesh with the first gear 581 . In addition, the second gear 582 changes the meshing position with respect to the first gear 581 in the axial direction while transmitting the rotational force of the first gear 581 to the ball screw 551, thereby allowing the ball screw 551 to move in the axial direction. .

In addition, as shown in Fig. 20 and Fig. 24, when the operator rotates the rotating handle 54, the ball screw 551 and the rotation operation member 53 rotate through the first gear 581 and the second gear 582, and along with the ball screw 551 The rotation of the rotating operation member 53 relatively slides with respect to the nut 552 , the main base 57 , the plurality of shafts 56 and the chuck seat 51 . Thereby, the plurality of rotation levers 52 engaged with the rotation operation member 53 rotate synchronously, and the clamping or unclamping of the snap ring 9 by the plurality of chuck claws 521 can be performed.

As shown in Figures 21 and 22, the snap ring of this example is embedded in the push rod part 6 in the fixture 4, and is configured to be movable relative to the main base 57, and the main base 57 is equipped with an operation that can be operated by the operator. handle 64. In addition, the advancing and retreating motion of the push rod part 6 is performed by an operator turning the operating handle 64. As shown in FIG.

The push rod part 6 has: a push block 61 forming the above-mentioned ejection front end surface 611 ; a slide plate 62 that advances and retreats by being operated by the operating handle 64 ; and a plurality of shafts 63 that connect the slide plate 62 and the push block 61 . In addition, the operating handle 64 is connected to the slide plate 62 via an engaging rod 65 engaged with the operating handle 64 and a rod 66 engaged with the engaging rod 65 .

The operating handle 64 and the engaging rod 65 are meshed by a first gear part 641 formed on one end of the operating handle 64 and a second gear part 651 formed on one end of the engaging rod 65, thereby constituting an interlocking manner. rotate. One end of the rod 66 is engaged with the other end of the engaging rod 65 , and the other end of the rod 66 is connected to the slide plate 62 .

In addition, as shown in Fig. 21, Fig. 24, and Fig. 28, when the operator operates the operating handle 64, the engagement lever 65 rotates through the first gear part 641 and the second gear part 651, and with this rotation, the rod 66 , the slide plate 62 , the plurality of shafts 63 and the push block 61 are relatively slid relative to the above-mentioned chuck part 5 . Thus, the push rod part 6 can push the snap ring 9 clamped on the plurality of chuck jaws 521 in the chuck part 5 out of the plurality of chuck jaws 521 .

In addition, as shown in FIG. 21 , the push block 61 can be returned to the original position by the urging device 631 arranged on the outer periphery of the shaft 63 .

In addition, as shown in FIG. 25 and FIG. 26 , the ejection front end surface 611 of the push block 61 of this example is formed on the remaining portion in the circumferential direction except the formation portion of the plurality of chuck claws 521 . In addition, as for the push block 61 , at positions corresponding to the plurality of chuck claws 521 , escape portions 612 are formed.

In addition, the ejection front end surface 611 is formed as a whole in a slope shape inclined with respect to the ejection direction (downward direction of the push rod portion 6 ), and the portion 611A that contacts the middle portion 93 of the snap ring 9 protrudes the most. In addition, in the ejection front end surface 611, a portion 611B located around the notch portion 91 of the snap ring 9 is located at the deepest point.

As shown in FIGS. 19 to 21 , on the snap ring fitting jig 4 , a positioning guide block 42 is disposed so as to be slidable in the up and down direction via a slide bar 421 , and the positioning guide block 42 is positioned relative to the retaining portion of the snap ring fitting jig 4 . 22, and the positioning of the assembled device 8 relative to the snap ring insertion fixture 4. The sliding bar 421 is configured to be slidable relative to the main base 57 .

As shown in FIG. 1 and FIG. 19 , when the front-back judging jig base 3 is slid to the transfer position 302 , the retaining portion 22 holding the snap ring 9 and the chuck portion 5 in which the snap ring is embedded in the jig 4 face each other.

In addition, as shown in FIGS. 19 and 23 , the operator lowers the snap ring insertion jig 4 so that it faces the front and back judging jig base 3 , and rotates the above-mentioned rotating handle 54 , using the clamp in the chuck portion 5 . A plurality of chuck claws 521 are used to clamp the outer periphery of the snap ring 9 held by the holding portion 22 . At this time, the plurality of chuck claws 521 can elastically deform the snap ring 9 in a diameter-reducing manner for clamping. In addition, when the snap ring 9 is clamped, the positioning block 23 can prevent the orientation of the snap ring 9 (the circumferential position of the notch portion 91 ) from changing.

In addition, as shown in FIGS. 27 and 28 , in the chuck portion 5 , a plurality of chuck claws 521 are provided on the circumference of the snap ring 9 including both ends 911 of the notch portion 91 constituting the snap ring 9 . Multiple clamping positions in the direction. Therefore, when the snap ring 9 is elastically deformed by reducing the diameter of the plurality of chuck claws 521, the first chuck claw 521A can clamp the two ends 911 of the snap ring 9 with the largest elastic reaction force. Clamp the snap ring 9 stably.

Then, when the operator lifts the snap ring insertion jig 4 from the front and back judging jig base 3 , the front and back judging jig base 3 is reset to the fixed position 301 by the reset device 34 (see FIG. 10 ).

Next, as shown in FIGS. 20 and 28 , the worker lowers the snap ring fitting jig 4 into the assembly hole 81 of the housing 8 of the A/T placed on the mounting table 12 . At this time, the plurality of chuck claws 521 clamping the outer periphery of the snap ring 9 can descend into the assembly hole 81 by using the space in the depth direction groove 83 of the housing 8 of the A/T.

In addition, as shown in FIG. 28 , the operator lowers the snap ring fitting jig 4 until the front end faces of the plurality of chuck claws 521 are positioned on the inner peripheral side of the opening side end face 822 of the ring groove 82 .

Next, as shown in FIGS. 21 and 28 , the operator operates the above-mentioned operating handle 64 to lower the push block 61 relative to the plurality of chuck claws 521 . Thus, as shown in FIG. 29 , the snap ring 9 clamped by the plurality of chuck claws 521 is pushed out from the plurality of chuck claws 521 through the ejection front end surface 611 of the push block 61 . At this time, the snap ring 9 is fitted into the ring groove 82 while expanding its diameter by its elastic restoring force.

In addition, as shown in FIG. 25 , the protruding front end surface 611 is formed as an inclined slope as a whole, and the portion 611A that contacts the middle portion 93 of the snap ring 9 protrudes the most. Therefore, as shown in FIG. 28 and FIG. 29, before the vicinity of the notch portion 91 of the snap ring 9 is separated from the chuck claw 521, the vicinity of the middle portion 93 is separated from the chuck claw 521, and according to its elastic restoring force, The vicinity of the intermediate portion 93 may be fitted into the ring groove 82 earlier than the vicinity of the notch portion 91 .

After that, the snap ring inserting jig 4 is raised from the assembly hole 81 of the A/T housing 8 to complete a series of actions for assembling the snap ring 9 .

Therefore, according to the snap ring fitting jig 4 of this example, the snap ring 9 can be stably fitted into the ring groove 82 of the component to be assembled 8 .

Claims (6)

1. A snap ring front and back judging jig for judging the front and back of the snap ring when the snap ring is handed over to a snap ring embedding jig for embedding the snap ring into an assembled part, characterized in that, The above-mentioned snap ring has a C-shape with a notch on a part of its circumferential direction, and the end face on one side in the axial direction is a plane perpendicular to the axis of the snap ring, and has a slope on the other end face in the axial direction, The snap ring front and back judging jig has: a holding portion holding the snap ring; and a front and back judging portion that moves relative to the holding portion and engages with a part of the snap ring, The front and back judging part has: one side abutment surface having a shape along one end surface of the above-mentioned axial direction of the above-mentioned snap ring; one side abutment surface, When the front and back judging part moves relative to the holding part that holds the snap ring, when the front and back of the snap ring are correct, the abutment surface on the one side coincides with the entire end face on one side in the axial direction, and the other side When the abutting surface coincides with the whole of the end surface on the other side in the axial direction, it can move to an engaging position where it engages with a part of the snap ring, Furthermore, only when the front-back judging part moves to the engaging position, the holding part holding the snap ring can be slid to a delivery position for fitting the snap ring to the jig. 2. The jig for judging the front and back of the snap ring according to claim 1, wherein the holding portion has a concave shape in which the snap ring is embedded and placed, and the holding portion is provided with a diametrically-oriented a sliding positioning block that engages with the cutout portion of the snap ring from the inner peripheral side to perform positioning in the circumferential direction of the cutout portion, The positioning block has a pair of inclined surfaces whose circumferential width gradually decreases radially outward so as to engage with the notch from the inner peripheral side and is urged radially outward by the urging means. 3. The jig for judging the front and back of the clasp according to claim 1 or 2, wherein the above-mentioned holding part and the above-mentioned front and back judging part are arranged on a base part that can slide in the horizontal direction relative to the stand, and the base The part can slide between the fixed position for fixing the above-mentioned snap ring to the above-mentioned holding part, and the above-mentioned transfer position, The above-mentioned front-back judging part is a front-back judging block on which the above-mentioned one-side abutting surface and the above-mentioned other-side abutting surface are formed up and down, The above-mentioned base part has: a sliding fixing rod, which engages with a limit block provided on the above-mentioned platform at the above-mentioned fixed position and the above-mentioned transfer position to fix the sliding of the above-mentioned base part; The block is engaged to slide the above-mentioned sliding fixing rod, And it is comprised so that when the said front-back judgment block is moved to the said engaging position, the engagement of the said slide fixing lever with respect to the said stopper is released by the said connecting rod. 4. The clamp for judging the front and back of the clasp according to claim 3, characterized in that, on the above-mentioned front and back judging block and the above-mentioned base part, an operation part operated by an operator is respectively provided, and the front and back judging block and the base The seat portion is slide-operated by the above-mentioned operation portions. 5. The jig for judging the front and back of the snap ring according to claim 1, wherein the snap ring embedding jig has: a chuck portion for clamping the outer periphery of the snap ring, and a state where the chuck portion is to be clamped. The push rod part ejected from the above snap ring, The chuck part has a plurality of chuck claws clamping the outer periphery of the snap ring, and the plurality of chuck claws are provided on the periphery of the snap ring including both ends of the cutout part constituting the snap ring. Multiple clamping positions in the direction. 6. The jig for judging the front and back of the clasp according to claim 1, wherein the above-mentioned assembled part is the casing of the automatic transmission, The snap ring is fitted in a ring groove formed in the circumferential direction in the housing, and prevents axial misalignment of components of the automatic transmission.

Images