JPH052804U - Auto-kelet device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The spindle is automatically attached and removed on the spindle side, and the rotational force is used to increase the clamping force for the workpiece. [Structure] A plurality of bolts 35 for holding the work 24
There is a holding portion 29 that is screwed together, an arm portion 30 that extends outward from one end of the holding portion 29, and an engaging portion 31 that is connected to the arm portion 30 and is divided into a left and right pair. The forming plates 27 to be formed are arranged so as to face each other in a B-shape. The bases of the holding portions 29 are pivotally connected to the substrate 22 so that the two breaking plates 27 can rotate. A support rod 21 that rotates together with a face plate such as a grinder is loosely fitted in the engaging portion 31. Each arm 30 has a bearing block 36 fixed to the substrate.
Are provided facing each other with an appropriate gap. The arms 30 are urged toward the bearing block 36 by the elastic force of the springs 42, and the gaps can be pushed open by the tapered head portions 15 of the opening / closing rods fitted into the gaps.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a scraper used for imparting rotation to a work (workpiece) on the headstock side of a grinder or a lathe (hereinafter referred to as "grinding machine"), and more specifically, the scraper. Related to improvements to enable automatic attachment / detachment of workpieces.

[0002]

[Prior Art]

 For center work, in which a rod-shaped work is supported between the centers of the headstock and tailstock of a grinding machine, etc., for machining, a drive pin protruding from the headstock to a tool attached to one end of the work Are provided so as to contact with each other to rotate the work. 9 and 10 are drawings showing an example of a concrete structure thereof. A rod-shaped work e is supported between a center b of a headstock a and a center d of a tailstock c, and a headstock of the work e is supported. The tip f is attached to one end on the a side. The skelet f is composed of a ring part g into which the work e can be inserted and an arm part h extending from the ring part g. The attachment of the skein f to the work e is performed by inserting the work e into the ring part g. It is carried out by tightening a bolt i screwed to the portion g. On the other hand, the headstock a is provided with a disk-shaped face plate k connected to the front portion of the pulley j that is transmitted by a belt so as to rotate concentrically with the center b. A drive pin 1 is provided so as to abut the portion h. Then, by rotating the face plate k via the belt transmission of the pulley j, the arm f contacting the drive pin 1 rotates the skein f, and the skelet f can rotate the work e. It is provided.

However, in the case of the above-mentioned breakage, since the attachment / detachment operation for the work has to be performed manually, there is a problem that it is troublesome, time-consuming, and its work efficiency is poor.

[0004]

SUMMARY OF THE INVENTION The present invention is an attempt to improve the conventional problems as described above. The problem of the present invention is to automate the operation of attaching / detaching the shavings to / from the work, While making it possible to improve the work efficiency, it is possible to obtain a strong tightening force for the work of the scraper by utilizing the rotating force of the face plate of the grinder etc. And the action is as follows.

[0005]

[Means for Solving the Problems]

 The center of the headstock is inserted into the cylinder case that is fixed to the face plate of the headstock, and a pair of upper and lower support rods are projected forward from the front end surface of the cylinder case. A substrate having an insertion hole for the work at a corresponding position is swingably supported via the support rods, and a holding portion is provided on the substrate at a position corresponding to the insertion hole. There is an arm part extending outward from one end of the holding part and an engaging part continuous with the arm part, and the pair of left and right split plate plates are arranged opposite to each other in a toe-like shape. Is to pivotally connect the base portion of each holding portion to the base plate by a pin, and to loosely fit the above supporting rods into the engaging holes formed in the engaging portions. And each holding portion is formed by the above-mentioned concave portions facing each other. Toward each other, at least three pinching bolts are screwed together at approximately equal intervals, and bearing blocks for fixing to the board are installed facing each other with an appropriate gap. The spring is urged toward the bearing block through the elastic force of the spring, and the opening and closing rod extending from the cylinder case pushes the gap open.

[0006]

[Action]

 When the opening / closing rod pushes open the gap between the arm and the bearing block, both pin plates turn about the pin in the opening direction, while when the opening / closing rod stops pushing the gap open, both pin plates are spring loaded. It is rotated in the closing direction via the force. By opening and closing the holding part of the breaking plate by the opening and closing directions of the breaking plate, the work piece is automatically held and released by the tip of the holding bolt screwed to the holding part. It is possible to obtain the action. Also, when the face plate is rotated, the support rod loosely fitted in the engagement hole of each engaging part rotates the closing plate in the closing direction, so that the tip of the clamping bolt is pressed against the workpiece, and the rotation force of the face plate is increased. The action of strongly tightening the work is obtained.

[0007]

【Example】

 Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 7 are drawings showing an embodiment of the present invention. In the drawings, A is an automatic scraping device according to the present invention, and B is a headstock of a grinding machine or the like equipped with the automatic scraping device A. The headstock B is formed in the same structure as the conventional headstock B, and the center 1 is provided on the headstock B so as to project toward the front direction, that is, the facing tailstock (not shown) direction. A substantially disk-shaped face plate 2 is arranged on the outer peripheral portion of the center 1, and the face plate 2 is provided so as to be rotationally driven around the center 1.

Reference numeral C denotes a rotary cylinder attached to the face plate 2, in which a non-rotating guide ring 3 is arranged in the center, and the guide ring 3 is provided with steel balls 4 ... A substantially cylindrical cylinder case 5 is provided rotatably along the circumferential direction. The cylinder case 5 includes a front case 5a and a rear case 5b, and is divided into front and rear parts. Both cases 5a and 5b are integrally fixed by a plurality of bolts 6 and the rear case 5b. Is fixed to the front end surface of the face plate 2 by a plurality of mounting bolts 7 ...

The rear case 5b is provided with a cylindrical portion 9 penetrating an insertion hole 8 through which the center 1 is inserted along the axial center line thereof, while the front case 5a is provided with an outer peripheral surface of the cylindrical portion 9. A cylindrical portion 10 is provided at an appropriate distance from the surface, and a cylinder chamber 11 is formed between the cylindrical portions 9 and 10. A piston 12 formed in a ring shape is inserted into the cylinder chamber 11 so as to be able to move back and forth along the front-rear direction, and the piston 12 is urged by springs 13, 13 mounted on the front side of the cylinder chamber 11. The piston 12 is provided so as to be constantly biased in the backward direction, and the piston 12 is provided with a pair of open / close rods 14 and 14 projecting forward from a position of the front end face of which the phase is 180 degrees, and the piston is provided at the tip thereof. Tapered heads 15 and 15 having a conical shape with inclined surfaces inclined rearward are provided.

An air supply hole 17 for connecting the air hose 16 is opened in the outer peripheral wall of the guide ring 3, and the outer peripheral surface of the cylindrical portion 10 of the front case 5 a is made to correspond to the air supply hole 17. The annular groove 18 is engraved, and the annular groove 18 is communicated with the cylinder chamber 11 through a communication passage 19 so that air can be supplied to the rear surface of the piston 12.

On the other hand, a pair of upper and lower support rods 21 and 21 are projectingly provided in front of the front case 5a via support blocks 20 and 20 fixed to the front end surface of the front case 5a. A board 22 that constitutes the automatic kneading apparatus A is supported on the terminals 21 and 21. That is, the base plate 22 is formed in a vertically long substantially rectangular shape, and is rockably supported by loosely fitting the support rods 21 and 21 into the engaging holes 23 and 23 formed in the vicinity of the upper and lower ends thereof, respectively. It An insertion hole 25 for inserting the work 24 is opened at a position corresponding to the center 1 in the central portion of the substrate 22, while the opening / closing rods 14, 14 are provided at positions corresponding to the opening / closing rods 14, 14 of the substrate 22. Insertion holes 26, 26 for inserting the through holes are opened.

On the substrate 22, there is attached a pair of scraper plates 27, 27, which are arranged to face each other in a B-shape. The holding plates 27, 27 have holding portions 29, 29 in which semicircular concave portions 28, 28 are provided at positions corresponding to the insertion holes 25, and outwardly from one end of the holding portions 29, 29. The extending arm portions 30, 30 and the engaging portions 31, 31 connected to the arm portions 30, 30 are formed to be divided into left and right pairs, and the other end portions of both holding portions 29, 29 are pins. While being pivotally connected to the base plate 22 via 32, 32, engaging holes 33, 33 are formed in both engaging portions 31, 31, and the supporting rods are provided in the engaging holes 33, 33. 21, 21 are loosely fitted. In the circular opening 34 formed by the recesses 28, 28 of the both holding portions 29, 29, at least three holding bolts 35 ... Are provided toward the center of the circular opening 34 from the outer surfaces of the both holding portions 29, 29. The work 24 can be clamped by being screwed forward and backward at substantially equal intervals and bringing the tip end of each bolt 35 into contact with the outer peripheral surface of the work 24 inserted into the opening 34. Is provided.

Bearing blocks 36, 36 facing the arm portions 30, 30 of the breaker plates 27, 27 with an appropriate gap S on the board 22 are screwed 37 from the back surface of the board 22. It is fixed by 37. The gaps S between the bearing blocks 36, 36 and the arm portions 30, 30 are provided so as to correspond to the positions where the tapered head portions 15, 15 of the opening / closing rods 14, 14 respectively face. In addition, the bearing blocks 36, 36 have the insertion holes 38, 38 of the screws 37, 37 formed in a long hole shape so that the widths of the respective gaps S with the arm portions 30, 30 can be adjusted, and the bearing blocks 36, 36 are engraved on the substrate 22. It is provided for slide adjustment in the left-right direction along the recessed grooves 39, 39 provided. Connection bolts 40, 40 are inserted between the pair of bearing blocks 36, 36 and the arm portions 30, 30 through insertion holes formed at corresponding positions, and the tip portions of the connection bolts 40, 40 are arm portions. The springs 42, 42 are interposed between the nuts 41, 41 projecting from the outer side surfaces of the portions 30, 30 and screwed into the tip portions of the bolts 40, 40 and the outer side surfaces of the arm portions 30, 30, respectively. The spring plates 42, 42 are provided so as to urge the breaker plates 27, 27 toward the bearing blocks 36, 36 via the elastic force of the springs 42, 42.

Next, the operation will be described. As shown in FIG. 3, when air is forced into the supply hole 17 from the air hose 16 in a state where the piston 12 is retracted by the elastic force of the spring 13, the air is injected into the annular groove 18 and the communication passage 19. After that, the piston 12 is pressed into the back surface of the piston 12 in the cylinder chamber 11, and the piston 12 is pushed forward against the elastic force of the spring 13. Then, as the piston 12 is pushed out in this manner, as shown in FIG. 5 and FIG. 6, the piston 12 is positioned so as to face the gap S between the arm portions 30, 30 of the relay plates 27, 27 and the bearing blocks 36, 36. The open / close rods 14, 14 are pushed forward from that position, and the tapered head portions 15, 15 formed at the tips thereof are fitted into the same gap S. By thus inserting the tapered heads 15 and 15 into the gaps S, the inclined surfaces of the tapered heads 15 and 15 cause the inner surfaces of the arms 30 and 30 and the bearing blocks 36 and 36 to move. However, since the bearing blocks 36, 36 are fixed, the arms 30, 30 are pushed laterally against the urging force of the springs 42, 42. As a result, the breaker plates 27, 27 rotate about the pins 32, 32 as fulcrums, and the holding portions 29, 29 are opened to the left and right.

As the two holding portions 29, 29 are opened in this manner, the tip end portions of the holding bolts 35 that are screwed into the holding portions 29, 29 also open to the left and right, and the work 24 can be attached and detached. You can get a state to come. When attaching the breaker plates 27, 27 to the work 24, the work 24 inserted into the opening 34 is supported between the center 1 of the headstock B and the center (not shown) of the tailstock, and the supply hole is provided. When air is removed from 17, the piston 12 is retracted by the elastic force of the spring 13, and the tapered heads 15 and 15 of the open / close rods 14 and 14 that have been inserted into the gap S are pulled back, so far. The arms 30, 30 that have been expanded by the tapered heads 15, 15 are pushed back by the urging force of the springs 42, 42, and the breaking plates 27, 27 rotate in the closing direction with the pins 32, 32 as fulcrums. The distal end portions of the holding bolts 35 that move and are screwed into the holding portions 29, 29 come into contact with the outer peripheral surface of the work 24, and the work 24 is held by the holding bolts 35, that is, Shown in Figures 1 and 4 Mounting state of Kere plate 27, 27 with respect to the workpiece 24, such as can be obtained.

In this way, the cylinder case 5 is rotated by rotating the face plate 2 of the headstock B in the direction of arrow T (see FIG. 4) with the breaker plates 27, 27 attached to the work 24. It is possible to obtain a state in which the automatic kneading device A supported by the support rods 21 and 21 protruding from the front case 5a rotates in the same direction as described above to rotate the work 24. At this time, since the support rods 21 and 21 are loosely fitted in the engagement holes 33 and 33 formed in the engagement portions 31 and 31 of the breaker plates 27 and 27, the support rods 21 and 21 are rotated when the cylinder case 5 rotates. 21 and 21 move in the engaging holes 33, 33 in the rotation direction thereof, contact the front end edges of the engaging holes 33, 33 as shown by the chain line in FIG. 4, and press the front end edges. As the front end edges of the engagement holes 33, 33 are pressed by the support rods 21, 21 in this manner, a force is generated to rotate the breaker plates 27, 27 in the closing direction about the pins 32, 32 as a fulcrum, and the holding The clamping bolts 35 of the parts 29, 29 are strongly pressed against the work 24, so that the work 24 can be strongly tightened. Further, since the holding bolts 35 serving as a load point are provided between the pins 32, 32 serving as a fulcrum of rotation of the breaker plates 27, 27 and the engaging holes 33, 33 serving as a force point, the lever principle is provided. As a result, it is possible to obtain the effect of increasing the tightening force of the clamping bolts 35 with respect to the work 24 to be greater than the rotational pressing force of the support rods 21 and 21.

On the other hand, when the grinding of the workpiece 24 is finished and the rotation of the face plate 2 is stopped and the workpiece 24 is removed from the scraper plates 27, 27, the piston 12 is moved by pressurizing air from the supply hole 17 as described above. When the tapered heads 15 and 15 of the open / close rods 14 and 14 are pushed and inserted into the gap S, the arms 30 and 30 are laterally moved against the biasing force of the springs 42 and 42. The state in which the clamping action of the clamping bolts 35 ... Further, at this time, if the support rods 21 and 21 are kept in contact with the front end edges of the engaging holes 33 and 33 by stopping the rotation of the face plate 2, as shown by the chain line in FIG. The tapered heads 15, 15 of the open / close rods 14, 14 are slightly displaced from the gap S toward the bearing blocks 36, 36. If the open / close rods 14, 14 are extruded in this state, the tapered heads 15, 15 move. Since the parts 15, 15 first come into contact with the inner side surfaces of the bearing blocks 36, 36, the entire device is rotated by the pressing action of the bearing blocks 36, 36 by the tapered heads 15, 15 to rotate the support rod 21. , 21 can be relatively retracted from the front end edges of the engagement holes 33, 33. As a result, it is possible to obtain a function of preventing a problem that the breaker plates 27, 27 do not rotate in the opening direction due to the contact between the support rods 21, 21 and the front end edges of the engagement holes 33, 33.

In the above embodiment, the opening / closing rod 14 is provided so as to be movable back and forth, and the tapered head portion 15 formed at the tip end thereof is inserted into the gap S to open and close the breaker plate 27. However, as another embodiment, as shown in FIG. 8, a plate-shaped flat portion 43 is formed on the head of the opening / closing rod 14, and the opening / closing rod 1 is inserted in the gap S. It is also possible to provide so that the breaker plate 27 can be opened and closed by rotating 4.

[0019]

[Effect of the device]

 The present invention is configured as described above. With the above-described configuration, it is possible to automatically attach / detach the scraping plate to / from the work, and the work can be performed as compared with the conventional manual work. It has become possible to dramatically improve efficiency. Further, by providing the scraping plate so as to be tightened by the rotating force of the face plate such as the grinder, it is possible to obtain a strong tightening force for the work of the scraping plate.

[Brief description of drawings]

1 to

FIG. 7 is a view showing an embodiment of the present invention,

FIG. 1 is a front view of an automatic kere device,

[Figure 2]

1 is a sectional view taken along line D-D in FIG.

FIG. 3 is a side cross-sectional view of the auto-kelet device,

[Figure 4]

FIG. 3 is a sectional view taken along line EE in FIG.

[Figure 5]

FIG. 4 is a sectional view taken along line FF in FIG.

[Figure 6]

FIG. 4 is a sectional view taken along line GG in FIG.

[Figure 7]

FIG. 3 is a sectional view taken along line HH in FIG.

FIG. 8 is a perspective view showing another embodiment of the opening / closing rod,

FIG. 9 is a side view showing a usage state of a conventional kere,

FIG. 10 is a front view of a conventional kere.

[Explanation of symbols]

A ... Auto-skeleton device, B ... Headstock, C ... Rotating cylinder, 1 ... Center, 2 ... Face plate, 3 ... Guide ring, 4 ... Steel ball, 5 ... Cylinder case, 5a ... Front case, 5b ...
Rear case, 6 ... Bolt, 7 ... Mounting bolt, 8 ... Insertion hole, 9, 10 ... Cylindrical part, 11 ... Cylinder chamber, 12 ... Piston, 13 ... Spring, 14 ... Opening / closing rod, 15 ... Tapered head, 16 ... Air hose, 17 ... Supply hole, 18 ... Annular groove, 19 ... Communication passage, 20 ... Support block, 21 ... Support rod, 22 ... Substrate, 23 ... Engagement hole, 24 ... Workpiece, 2
5 ... Insertion hole, 26 ... Insertion hole, 27 ... Break plate, 28 ... Recessed part, 29 ... Holding part, 30 ... Arm part, 31 ... Engagement part, 32 ...
Pins, 33 ... Engagement holes, 34 ... Openings, 35 ... Support bolts, 36 ... Bearing blocks, 37 ... Screws, 38 ... Insertion holes,
39 ... Recessed groove, 40 ... Connection bolt, 41 ... Nut, 42 ...
Spring 43 ... Flat part.

Claims (1)

[Claims for utility model registration] [Claim 1] The center of the headstock is inserted into a cylinder case fixed to the face plate of the headstock, and a pair of upper and lower support rods are projected forward from the front end surface of the cylinder case. On the other hand, in the front of the cylinder case, a substrate having an insertion hole for the work is supported swingably through the support rods at a position corresponding to the center, and the insertion hole is provided on the substrate. There is a holding portion having a recessed portion at a position, an arm portion extending outward from one end of the holding portion, and an engaging portion continuously connected to the arm portion, which are divided into a pair of left and right portions. The kerb plates are arranged to face each other in a tongue shape, and both kerb plates pivotally connect the bases of the respective holding parts to the substrate with pins by means of pins, and pierce the respective engaging parts at the same engaging part. The support rods are loosely fitted in the engaging holes, and the supporting portions are opposed to each other. At least three holding bolts are screwed toward the center of the opening formed by the parts at substantially equal intervals, and a bearing block for fixing to the substrate is provided in each arm with an appropriate gap. An auto-kelet device which is provided so as to face each other and is provided so as to urge each arm portion in the bearing block direction through elastic force of a spring and to open the gap by an opening / closing rod extending from the cylinder case.