JPH0952422A - Marking press for timing mark - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatically marking press of an excellent workability without generating a crack on a work by stabilizing a depth of a stamp (a timing mark) in a marking press for the timing mark wherein a plurality of timing marks are marked on the work equipped with a cylindrical surface. SOLUTION: A work support part supporting freely rotatably a work 71, a plurality of jig support parts 12, 15 supporting a plurality of marking jigs 11, 14, and a drive means transferring a plurality of the jig support parts 12, 15 are provided. Then, a plurality of the marking jigs 11, 14 pinch the work from 180 deg. symmetrical positions. One marking jig 11 moves its tangential direction to one side, and the other marking jig 14 moves the tangential direction to the reverse side. A plurality of timing marks are marked on an outer peripheral surface 71b of the work 71 while the work 71 is revolving on the spot.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timing mark marking device used for marking a plurality of timing marks on the outer peripheral surface of a workpiece.

For example, when a torsional damper, which is a vibration isolator, is mounted on the crankshaft of an engine, in order to accurately check the angular "deviation", vibrations made of metal, which is a component of the torsional damper, are used. A plurality of timing marks are engraved in advance on the outer peripheral surface of the ring or the hub.

However, conventionally, this marking work is performed manually as follows.

[0004]

2. Description of the Related Art First, as shown in FIGS. 14 and 15, a first work receiving jig 51 and a first marking jig 61 are prepared, and a concave portion provided in the work receiving jig 51 is prepared. The work 71 is mounted on the mounting portion 52 having the shape of a circle. The mounting portion 52 of the work receiving jig 51 is provided with the shaft portion 53 for fitting the annular work 71, and the outer peripheral surface 53a of the shaft portion 53 is provided with the key 54. A key groove 72 is provided in advance on the inner peripheral surface 71 a of the work 71. Further, the work receiving jig 51 is provided with a guide hole 55 toward the shaft portion 53, and the marking jig 61 is slidably combined with the guide hole 55. This engraving jig 61 is stamp-shaped
Has a marking portion (not shown) formed three-dimensionally on the front end portion 61a formed in a curved shape along the outer peripheral surface 71b of the work 71, and the marking portion is strongly pressed against the outer peripheral surface 71b of the work 71. Thus, a timing mark (not shown) is imprinted on the outer peripheral surface 71b. Therefore, as a work, first, the key groove 72 of the work 71 is aligned with the key 54 of the shaft portion 53, the work 71 is mounted on the mounting portion 52 of the work receiving jig 51, and then the rear end portion 6 of the marking jig 61.
1b is strongly hit with a hammer (not shown) as shown by an arrow, and the marking portion is strongly pressed against the outer peripheral surface 71b of the work 71, whereby the first timing mark is marked on the outer peripheral surface 71b of the work 71. To do.

Subsequently, in order to engrave a second timing mark (not shown) on the outer peripheral surface 71b of the work 71,
As shown in FIGS. 16 and 17, a second work receiving jig 81 and a second marking jig 91 are used. The second work receiving jig 81 has a structure very similar to that of the first work receiving jig 51, but the position of the key 84 provided on the outer peripheral surface 83a of the shaft portion 83 is the first work receiving jig. Different from 51, a second timing mark is imprinted at a position circumferentially displaced with respect to the first timing mark.

Conventionally, the timing mark is manually stamped using the two sets of the workpiece receiving jigs 51 and 81 and the marking jigs 61 and 91 as described above. Therefore, the following problems have been pointed out. That is, first, since the hammering force (striking force) of a hammer varies manually, the depth of the marking (timing mark) is not stable, and the quality is not stable. Further, if the marking jigs 61, 91 are strongly hit with a hammer, the work 71 may be cracked by the impact. Moreover, since the same striking work must be repeated twice for one work 71, it takes time and labor, and the workability is not good.

[0007]

In view of the above points, the present invention is a timing mark marking device for marking a plurality of timing marks on a work such as a vibrating ring or a hub having a cylindrical surface. An object of the present invention is to provide an automatic marking device in which the depth of (timing mark) is stable, cracks do not occur in the work, and workability is good.

[0008]

In order to achieve the above object, a timing mark marking device according to the present invention comprises a work supporting portion for rotatably supporting a work and a plurality of jigs for supporting a plurality of marking jigs. A support part and a driving means for moving the plurality of jig support parts are provided, the plurality of marking jigs sandwich the work from a 180-degree symmetrical position, and one marking jig has one tangential direction to one side. While moving, another marking jig moves its tangential direction in the opposite direction, and while rotating the work on the spot, a plurality of timing marks are marked on the outer peripheral surface of the work.

[0009]

[Operation] Simultaneously simulating a plurality of marking jigs as racks based on the rack-and-pinion principle, and simulating workpieces as pinions, a pair of marking jigs are simultaneously moved in opposite directions, and are followed by the workpieces on the spot. Rotate,
During this movement, a plurality of timing marks are marked on the outer peripheral surface of the work. The magnitude of the force with which the pair of marking jigs clamps the work, the speed at which the marking jigs move in the tangential direction, and the like are set mechanically constant. A pneumatic or hydraulic cylinder (actuator) or the like is used as the driving means, and as will be described later, it is suitable to use a hydraulic / pneumatic pressure converter (hydraulic / pneumatic pressure increasing converter).

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the best mode (embodiment) of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, a work support portion 31 is horizontally supported at a predetermined height by a frame (not shown) and rotatably supports a work 71 at a substantially center of a plane. A pair of linear bushes 2 and 2 are fixed in parallel to each other on the provided base 1 so as to sandwich the work support portion 31, and the linear bushes 2 and 2 make the pair of linear shafts 3 and 3 parallel to each other. The linear shafts 3 and 3 are slidably supported, and the first and second plates 4 and 5 are fixed to the ends of the linear shafts 3 and 3, respectively.

The first cylinder 6 is fixed to the outside of the first plate 4 (on the left side in FIG. 2), and the operating rod portion 6a of the first cylinder 6 which expands and contracts is attached to the first plate 4. It is connected to the slide plate 7 through the through hole 4a provided. The first and second plates 4, 5 and the slide plate 7 are arranged parallel to each other and orthogonal to the linear shafts 3, 3.

At the original position of the first plate 4 (the position where the first marking jig 11 which will be described later is separated from the work 71 in the left direction in FIG. 2), the operating rod portion 8a that expands and contracts advances (projects). Positioning is performed by sandwiching the first plate 4 between the distal end portion of the operating rod portion 8a of the second cylinder 8 in the closed state and the screw-adjustable stopper 9 fixed on the base 1. Has been done.

The slide plate 7 has a pair of through holes 7a,
7a (only one of which is shown) is provided and a pair of linear bushes 10 and 10 are fixed, and the linear bushes 10 and 10 are slidably fitted on the linear shafts 3 and 3, respectively. Slides on the linear shafts 3 in parallel to the first and second plates 4 and 5 in accordance with the expansion and contraction operation of the first cylinder 6.

A third jig supporting portion 12 which supports the first marking jig 11 is slid outside the side end bent portion 7b on one side (lower side in FIG. 2) of the slide plate 7. The cylinder 13 is fixed, and similarly, on the outer side of the side end bent portion 5b on one side (the upper side in FIG. 2) of the second plate 5,
A fourth cylinder 16 that slides a second jig support portion 15 that supports the second marking jig 14 is fixed.
That is, the operating rod portion 13a of the third cylinder 13 that expands and contracts penetrates the through hole (not shown) provided in the one side end bent portion 7b of the slide plate 7 to pass through the first jig support portion. The actuating rod portion 16a of the fourth cylinder 16 which is connected to 12 and extends and contracts passes through a through hole (not shown) provided in the one side end bent portion 5b of the second plate 5. It is connected to the second jig support portion 15. The sliding directions of the first and second jig supporting portions 12 and 15 are the vertical directions in FIG. 2 which are orthogonal to the sliding directions of the linear shafts 3 and 3 and the plates 4, 5 and 7, respectively.

The second cylinder 8 is fixed on the base 1 in order to retract the second plate 5 to the original position (the position where the second marking jig 14 is separated from the work 71 in the right direction in FIG. 2). The operating rod portion 8a of the second cylinder 8 advances (projects) to press the first plate 4 to connect the second plate 5 via the linear shafts 3 and 3. Retreat to their original position.

A fifth cylinder (also referred to as a first synchronizing cylinder) 17 is fixed to the outside of the side end bent portion 7c on the other side (upper side in FIG. 2) of the slide plate 7, and similarly.
A sixth cylinder (also referred to as a second synchronous cylinder) 18 is fixed to the outside of the other side end bent portion 5c of the second plate 5 (the lower side in FIG. 2), and is connected to each other via hydraulic pipes 19 and 20. This fifth and sixth cylinder 1 connected
7 and 18 actuating rod portions 17a and 18a respectively actuate rod portions 13a and 1a of the third or fourth cylinders 13 and 16 via the first or second jig supporting portions 12 and 15, respectively.
6a, by which the third and fourth cylinders 13, 16 have exactly the same movement.

First hydraulic / pneumatic pressure converter (hydraulic / pneumatic pressure boost converter)
Reference numeral 21 is provided for outputting hydraulic thrust to the first cylinder 6, and second hydraulic / pneumatic pressure converter (hydraulic / pneumatic pressure increasing converter) 2 is provided.
2 is provided for outputting hydraulic thrust to the third and fourth cylinders 13 and 16. These hydraulic / pneumatic pressure converters (hydraulic / pneumatic pressure boosting converters) 21 and 22 are characterized in that they can generate thrust similar to that of a hydraulic circuit in the pneumatic circuit.
It is suitable for use in a marking device of this type that requires the work 71 to be strongly clamped by the pair of marking jigs 11, 14. In FIG. 2, the hydraulic pipe is shown by a solid line and the pneumatic pipe is shown by a one-dot chain line.

As shown in FIGS. 3 and 4, the first and second jig supporting portions 12 and 15 described above are respectively recessed or shaped to fit the first or second marking jigs 11 and 14. The jig receiver 23 is provided with a groove-shaped mounting portion 24, and the jig holder 25 is provided with a convex portion 26 that is fitted to the mounting portion 24 of the jig receiver 23 from above. Receiving 23
The marking jig 1 is assembled by assembling the jig holder 25 and the jig retainer 25 so that they can be disassembled by the fastening means 27 such as a hexagon socket head cap screw.
1, 14 are detachably tightened and fixed from above and below. The first and second marking jigs 11 and 14 each have a flat plate shape or a block shape, and have a flat end surface (also referred to as a marking surface), which is different from the above-mentioned conventional technique.
Engraved portions 28 as illustrated in FIG. 5 are three-dimensionally formed on 11a and 14a. The engraved portion 28 is made up of various figures such as graduations, characters or symbols, or a combination thereof, and these figures are three-dimensionally formed in an embossed shape, and the tip end thereof is sharp, so that the work is 71
When the outer peripheral surface 71b of the
A timing mark is engraved on 1b.

As shown in FIGS. 6 and 7, a work supporting portion 31 having the following structure is provided at a substantially center of the base 1.

That is, first, the base 1 is provided with the penetrating portion 1a, and the cylindrical bearing holder 32 is fixed to the lower side of the opening peripheral edge of the penetrating portion 1a. The required number of bearings 33 are held, and the center shaft 34 is provided on the inner peripheral side of the bearing 33.
Is rotatably supported, a receiving jig 35 for setting the work 71 is fixed to the upper surface of the center shaft 34, and a prismatic swinging member 36 is fixed to the lower surface thereof. Further, one side surface notch 32 of the bearing holder 32
A prismatic stopper 37 is fixed to a, and the stopper 3
Since the end portion of 7 swings downward and the swing end portion 36 a of the swing member 36 contacts the stopper 37,
The rotation of the center shaft 34 (clockwise rotation in FIG. 7) is restricted up to this point. A substantially L-shaped bracket 38 is fixed to the other side surface notch 32b of the bearing holder 32, and a rotary actuator 39 is fixed to the lower side of the bracket 38 coaxially with respect to the center shaft 34 so as to rotate. A substantially L-shaped hook bracket 40 is fixed to the operation rod portion 39a of the rotary actuator 39, and the swing end portion 40a of the hook bracket 40 presses the swing member 36 when the rotary actuator 39 rotates, so that the swing member 36 swings. The moving member 36 and the center shaft 34 and the receiving jig 35 connected to the swinging member 36 are set at the original position (the swinging end portion 36a of the swinging member 36 shown in FIG.
It is designed to return to the state of contacting with the).

Next, the operation of the timing mark marking device having the above construction will be described. It is assumed that the work 71 is a vibrating ring or hub made of metal, which is a component of the torsion damper, and two timing marks are simultaneously engraved at 180-degree symmetrical positions on the outer peripheral surface 71b of the work 71.

First, the work 71 is manually set on the receiving jig 35 of the work supporting portion 31, and the marking device is operated. The initial movement positions of the respective parts of the device are as shown in FIGS. 2 and 7.

First, the operating rod portion 8 of the second cylinder 8
a is retracted (immersion operation), the regulation of the first plate 4 is released, and the first plate 4 and the first plate 4 are removed.
The linear shafts 3 and 3 and the second plate 5 connected to can be freely slid to the left in FIG. In this state, the operating rod portion 6a of the first cylinder 6 starts to move forward (projecting operation), and the slide plate 7
Is pushed to the right and slid, and the first marking jig 11
The slide stops at the time when the abutting contact with the workpiece 71. Even if the slide stops, the operating rod portion 6 of the first cylinder 6
a is still trying to move forward (protruding motion), and this time, with the slide plate 7 as a step, the first plate 4 starts to retreat to the left and is connected to this first plate 4 together with it. The linear shafts 3, 3 and the second plate 5 slide in the same direction, and when the second marking jig 14 comes into contact with the workpiece 71, the slide stops. Therefore, this realizes a state in which the first and second marking jigs 11 and 14 sandwich the work 71 at a high pressure from a 180-degree symmetrical position.

Next, the first and second marking jigs 11,
The working rod portions 13a and 16a of the third and fourth cylinders 13 and 16 connected by the fifth and sixth cylinders 17 and 18 via 14 are simultaneously advanced (projection operation).
2, the first jig support portion 12 moves upward in FIG. 2, and the second jig support portion 15 moves downward in FIG. 2 according to the principle of rack and pinion. Further, the second marking jigs 11 and 14 rotate the work 71 on the spot by the contact pressure, and during this movement, two timing marks are simultaneously marked on the outer peripheral surface 71b of the work 71 (see FIG. 10). When the work 71 rotates, the receiving jig 35 supporting the work 71 and the center shaft 34 and the swinging member 36 connected to the receiving jig 35 follow the rotation of the work 71 as shown in FIG. Then, it rotates counterclockwise in the figure.

When the marking is finished, first, the first cylinder 6
The operating rod portion 6a of (1) starts to retract (immersion operation), and the slide plate 7 is retracted to the left by being pulled by this, the first marking jig 11 separates from the work 71, and then the second cylinder 8 The operating rod 8a starts to move forward (protruding operation), presses the first plate 4 and slides it to the right, and following this, the second plate 5 slides and the second marking jig 14 works. Leave 71. The first plate 4 comes into contact with the stopper 9 to stop when it returns to the original position.

Next, in order to return the workpiece 71 rotated at the time of marking to the original position, the operating rod portion 39a of the rotary actuator 39 rotates clockwise in FIG. 8, and the hook bracket 40 fixed to this operating rod portion 39a.
The swinging end 40 a of the swinging member 36
A is pressed and rotated until it comes into contact with the stopper 37 and returns to the original position (see FIG. 9), and then the operating rod portion 39a of the rotary actuator 39 rotates in the reverse direction (counterclockwise).
Then, the swinging member 40 is returned to the original position. With the above,
The marking work for one cycle is completed.

When two timing marks are engraved on the outer peripheral surface 71b of the workpiece 71 at 180-degree symmetrical positions,
As shown in FIGS. 11 and 12, timing marks are engraved simultaneously on the engraved portions (scheduled engraving points) 73, 74 of the outer peripheral surface 71b of the work 71, but by shifting the timing of the engraving. It is also possible to engrave two timing marks at positions other than 180 degrees (for example, 90 degrees or 45 degrees). That is, 9
Taking 0 degrees as an example, the marking portions 28 are provided at the positions shown in FIG. Further, for example, by providing a second marking portion (not shown) on the tip surface 11a of the first marking jig 11, it is possible to mark three timing marks on the outer peripheral surface 71b of the work 71.

The timing mark marking device having the above-described structure has the following effects.

That is, first, by utilizing the principle of rack and pinion, two timing marks are simultaneously engraved on the outer peripheral surface 71b of the work 71, so that the labor and time required for engraving work can be reduced. It is possible to improve the sex. Further, after the work 71 is manually set on the work supporting portion 31, all the operations are performed mechanically, which also improves the workability. Further, as the marking work is mechanized, the marking jigs 11 and 14 always have a constant pressing force.
1 is pressed against the outer peripheral surface 71 of the work 71 in this state.
A timing mark is imprinted on b. Therefore, the depth of the marking (timing mark) can be stabilized to stabilize the quality, and it is possible to prevent a situation in which the work 71 is hit too hard and cracks occur in the work 71. it can.

Further, the first and second marking jigs 11 and 14
The tip surfaces 11a and 14a of the
Since the marking portion 28 is three-dimensionally formed here, it is easier to mold the marking portion 28 than a conventional marking jig having a curved distal end surface along the outer peripheral surface 71b of the work 71. Further, since the hydraulic circuit formed by the hydraulic / pneumatic pressure converters 21 and 22 is used, the marking work can be performed at a stable pressure.
This can also stabilize the quality.

[0032]

The present invention has the following effects.

That is, first of all, by utilizing the principle of rack and pinion, a plurality of timing marks are imprinted on the outer peripheral surface of the work, so that the labor and time required for the engraving work can be reduced, Workability can be improved. Further, after the work is manually set on the work supporting portion, all the operations are performed mechanically, which also improves the workability. Further, with the mechanization of the marking work, the marking jig is always pressed against the work with a constant pressing force, and in this state, the timing mark is marked on the outer peripheral surface of the work. Therefore, it is possible to stabilize the depth of the marking (timing mark) and stabilize the quality, and it is possible to prevent the situation in which the work is struck too strongly and the work is cracked. In addition, since the tip surfaces of a plurality of marking jigs are each formed into a flat shape and the marking portions are three-dimensionally formed here, the conventional marking treatment in which the tip surface is curved along the outer peripheral surface of the workpiece It has the effect of making it easier to mold the engraved portion than the tool.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a timing mark marking device according to an embodiment of the present invention and a piping explanatory view.

FIG. 2 is a plan view of the main part of the marking device.

FIG. 3 is an exploded perspective view of a marking jig and a jig support portion.

FIG. 4 is a perspective view showing a state after assembling of the marking jig and the jig support portion.

FIG. 5 is a front view of a marking jig.

FIG. 6 is a vertical cross-sectional view of a work supporting portion.

7 is a sectional view taken along line AA in FIG.

FIG. 8 is an operation explanatory view of the work supporting part.

FIG. 9 is an explanatory view of the operation of the work support section.

FIG. 10 is a perspective view of a main part showing an operating state of the marking device and an explanatory view of piping.

FIG. 11 is an explanatory diagram showing a positional relationship between a marking jig and a work.

FIG. 12 is an explanatory diagram showing a change in the positional relationship between the marking jig and the work.

FIG. 13 is an explanatory diagram showing another positional relationship between the marking jig and the work.

FIG. 14 is a partially cutaway front view of a marking jig according to a conventional example.

FIG. 15 is a vertical sectional view of the same.

FIG. 16 is a partially cutaway front view of a marking jig according to a conventional example.

FIG. 17 is a vertical sectional view of the same.

[Explanation of symbols]

1 Base 1a Penetration part 2,10 Linear bushing 3 Linear shaft 4 First plate 4a, 7a Through hole 5 Second plate 5b, 5c, 7b, 7c Side end bending part 6 First cylinder 6a, 8a, 13a, 16a, 17a, 18a, 39a
Working rod part 7 Slide plate 8 Second cylinder 9,37 Stopper 11 First marking jig 11a, 14a Tip surface 12 First jig support part 13 Third cylinder 14 Second marking jig 15 Second Jig support part 16 Fourth cylinder 17 Fifth cylinder 18 Sixth cylinder 19,20 Hydraulic piping 21 First hydraulic / pneumatic pressure converter 22 Second hydraulic / pneumatic pressure converter 23 Jig holder 24 Mounting part 25 jig retainer 26 convex portion 27 fastening means 28 engraved portion 31 work support portion 32 bearing holder 32a, 32b side cutout portion 33 bearing 34 center shaft 35 receiving jig 36 swing member 36a, 40a swing end portion 38 bracket 39 rotary Actuator 40 Hook bracket 71 Work piece 71b Outer peripheral surface 73, 74 Engraved part

Claims (1)

[Claims] 1. A work supporting part (31) for rotatably supporting a work (71) and a plurality of marking jigs (11) (1).
A plurality of jig support parts (12) and (15) for supporting 4),
A driving means for moving the jig supporting portions (12) (15), and the marking jigs (11) (14)
Holds the work (71) from a 180-degree symmetrical position,
While one marking jig (11) moves its tangential direction to one side and the other marking jig (14) moves its tangential direction to the opposite direction, rotating the workpiece (71) on the spot. A timing work marking device, wherein a plurality of timing marks are marked on the outer peripheral surface (71b) of the work (71).