JPH05212640A - Work fixture - Google Patents

Abstract

PURPOSE:To fix a work in a desired position and easily accurately, perform the work in a short time and obviate any skillfulness for the work. CONSTITUTION:A work pressing body 20 is shiftably installed in a body 10 fixable to a work table of a lapping machine or the like. In addition, an oprating member 17 being oprated by an operator and a force transmitting member 13 transmitting force made by operating member 17 to the work pressing body 20 both are installed in this body 10 as well. With this operating member 17 operated, the work pressing body 20 is made shiftable toward a work W via the force transmitting member 13. With this constitution, the work is lockable accurately and easily to a desired position. Moreover, the work is performable in a short time and no skill is required for the work. Furthermore, a position of the work fixed is very hard to be dislocated according to this method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for fixing a work suitable for lapping the surface of a disk-shaped work such as ceramics.

[0002]

2. Description of the Related Art When a surface of a ceramic disk is processed by a lapping device, the disk, that is, a work is fixed on a lapping machine by a fixing jig. At this time, since the fixing jig cannot be locked on the surface of the work, a plurality of (usually four) fixing jigs are pressed toward the center of the outer surface of the work to fix the work. These fixing jigs are movably engaged along the surface of the lapping machine, and they are arranged around the work at approximately equal intervals and then fixed by bolts at appropriate positions. There is.

The work of fixing the ceramic disk-shaped work using the above-mentioned conventional work-fixing jig is performed as follows. That is, first, the work is placed between the fixing jigs so that the center of the work substantially coincides with the center of the lapping machine, and then the jigs are brought into contact with the outer surface of the work, Tighten the bolts that fix the jigs so that each jig is semi-fixed. Then, hit each jig with a plastic hammer to make fine adjustment of the position so that the center of the work is exactly aligned with the center of the lapping machine, and then completely tighten the bolts to fix each jig to that position. To do. If necessary, an appropriate spacer is inserted between the jig and the work.

[0004]

SUMMARY OF THE INVENTION In the above-mentioned conventional work fixing jig, when fixing a disk-shaped work on a lapping machine, a semi-fixed jig is hit with a plastic hammer to move the jig. Since the work position is finely adjusted, it is difficult to accurately fix the work at a desired position, and there is a problem that the work takes a long time. There is also a problem that skill is required to properly perform the work.

Further, when fixing each jig, the worker simply pushes each jig against the outer surface of the work with a finger and bolts the work, so that the work pressing force by the jig cannot be increased so much. Therefore, if the rotational speed of the tool plate or lapping machine to which the grindstone is attached is increased or the work pressing force by the tool plate is increased, the work position may be displaced during the work.

Therefore, an object of the present invention is to provide a work fixing jig which can easily fix a work at a desired position accurately, can perform the work in a short time, and requires no skill in the work. To do.

Another object of the present invention is to provide a work fixing jig in which the position of the fixed work is extremely unlikely to shift.

[0008]

A jig for fixing a work according to the present invention comprises a main body that can be fixed to a processing table, a work pressing body that is movably attached to the main body, and a work pressing body that moves the work pressing body. The operating means provided on the main body, and the force transmitting means provided on the main body for transmitting the force given by the operating means to the work pressing body. The pressing body can be moved toward the work by operating.

[0009]

In the work fixing jig of the present invention, since the work pressing body is movably provided on the main body, the work is arranged at a desired position and the main body is fixed at a position close to the outer surface of the work. After that, if the work pressing member is moved by operating the operating means, the pressing force can be applied to the work while maintaining the work position. Therefore,
The work can be easily and accurately fixed at a desired position. In addition, since it is unnecessary to perform fine adjustment of the position by hitting with a hammer as in the conventional art, the work can be performed in a short time and no skill is required.

Further, since the pressing force can be applied to the work while maintaining the set position, the work is firmly held, and as a result, the position of the work is extremely unlikely to shift.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. (First Embodiment) FIG. 1 is a partial cross-sectional plan view showing a first embodiment in which the work fixing jig of the present invention is configured for a lapping apparatus.

In FIG. 1, the work fixing jig 1 of the present invention is a main body 10 that can be fixed on a lapping machine 55 (see FIGS. 3 and 4) of a lapping device, and is movably attached to the main body 10. The pressing body 20 is provided.

The main body 10 has a mechanism accommodating portion 11 for accommodating a mechanism for holding and moving the pressing body 20, and a fixing portion 12 for fixing the main body 10 on the lapping board 55. Two bolt holes 18 are formed in the fixed portion 12, and a bolt (not shown) is inserted into each bolt hole 18 to engage with an engagement groove 58 (see FIG. 4) formed in the lapping machine 55. By doing so, the main body 10 is fixed on the lapping board 55.

Inside the hollow mechanism accommodating portion 11, there is provided a semi-disc-shaped force transmitting member 13 which is swingable around a shaft 14 at approximately the center. The shaft 14 is the force transmission member 13
It is provided at the end of the pressing body 20 side. The force transmission member 13 is provided with a flat engagement surface 15 and a curved engagement surface 16. The engagement surface 15 is engaged with the tip end of the operating member 17, and the engagement surface 16 has a pressing body 20. The engaging portion 21 of is engaged. By the movement of the operating member 17 in the direction of arrow A, the force transmission member 1
3 swings in the direction of arrow B.

A bolt-shaped operation member 17 is screwed and attached to the peripheral wall of the mechanism accommodating portion 11. This operation member 1
A hexagonal hole is provided in the head of the outer end of 7, and a hexagonal wrench is engaged with the hole to rotate. When rotated, the operation member 17 moves in the major axis direction (direction of arrow A).

A pressing body 20 is movably attached to the peripheral wall of the mechanism accommodating portion 11 on the side opposite to the fixed portion 12. The pressing body 20 has two supporting portions 22 inserted through the peripheral wall of the mechanism housing portion 11, and moves in the major axis direction (direction of arrow C) while being guided by the supporting portions 22. Plate-shaped abutting portions 21 are attached to the inner ends of both supporting portions 22,
The engagement surface 16 of the force transmission member 13 is in contact with the flat engagement surface 25. U-shaped pressing portions 23 are attached to the outer ends of both supporting portions 22, and the work W is pressed by the pressing surfaces 24 at both ends thereof.

The operation of the work fixing jig 1 having the above configuration is as follows. When the operating member 17 is rotated and moved inward, the force transmitting member 13 is pushed leftward by the operating member 17 and swings upward around the shaft 14. As a result, the force transmission member 13 presses the engaging portion 21 of the pressing body 20 upward, so that the pressing body 20 moves outward. In this way, the pressing body 20 contacts the outer surface of the work W and presses it, as shown in FIG.

When the pressing of the work W is released, the operating member 17 may be rotated in the opposite direction. Then, the force with which the operation member 17 presses the force transmission member 13 disappears.
If the pressing body 20 is pushed in by hand, the pressing body 20 can enter the inside and release the engagement with the work W.

Next, the case where the surface of the ceramic disk is lapped by using the work fixing jig 1 having the above-mentioned structure will be described.

FIG. 2 is a plan view showing a state in which a ceramic disk is fixed on a lapping machine by using a jig 1, FIG. 3 is an overall view showing a schematic structure of a lapping device, and FIG. 4 is a tool plate. It is a principal part enlarged front view of the lapping machine in the state where the grindstone was in contact with the surface of the work W.

As shown in FIG. 3, the lapping device 50 has an arm 53 mounted on a main body 51 via a swing mechanism 52, and the cylinder 54 can swing the arm 53 up and down. .. By changing the pressure of the cylinder 54, the lapping pressure, that is, the work W
The pressure (load) applied to can be changed. Lapping machine 55
Is attached to the upper end of a spindle S1 which is rotated by the spindle motor M1, and is rotated by the spindle motor M1. A dust receiver 56 is provided around the lapping board 55. The rotation of the swing motor M2 is transmitted to the swing mechanism 52 by the transmission shaft S2 and swings the arm 53 in the horizontal plane. An upper shaft S3 that is rotated by an upper shaft motor M3 is provided at the tip of the arm 53.
A tool dish 57 having a plurality of grindstones G is attached to the lower end of 3. The grindstone G of the tool dish 57 is brought into contact with the surface of the work W as shown in FIG. 4, and the surface of the work W is lapped while an appropriate load is applied.

Four work-fixing jigs 1 of the present invention are arranged on the lapping board 55 as shown in FIGS. 2 and 4. Each jig 1 has an engagement groove 5 formed in the lapping machine 55.
8 is engaged and can be moved along the engaging groove 58 and the bolt hole 18 by loosening a fixing bolt (not shown).

When fixing the work W on the lapping machine 55, first, the work W is arranged between the jigs 1 so that the center of the work W coincides with the center of the lapping machine 55. Next, each jig 1 is fixed in the vicinity of the work W. At this time, each pressing body 20 is kept in the state of being retracted into the main body 10, and the pressing surface 24 is lightly attached to the outer surface of the work W. Make contact.

Subsequently, with respect to any one jig 1, each operating member 17 is rotated by a wrench for hexagonal holes. Then, the pressing body 20 is pushed out from the main body 10, and the work W
Press the outer surface of the toward the center. After that, another jig 1
Perform the same operation for. As a result, the work W is pressed and fixed in four directions orthogonal to each other.

The operation at this time is performed while confirming whether or not the position of the work W exactly coincides with the center of the lapping machine 55. For example, in FIG. 2, if the work W is displaced upward, the pressing body 20 of the upper jig 1 is excessively pushed out, and the pressing body 20 of the lower jig 1 is retracted, and fine adjustment is performed so that the displacement is eliminated. Do.

When the fixing of the work W is completed as described above, the cylinder 54 is operated to bring the surface of the work W into contact with the grindstone G of the tool dish 57. And each motor M1,
Lapping is started while operating M2 and M3.

According to the jig 1 of the present invention, since the work W is fixed by applying a pressing force to the outer side surface of the work W toward the center thereof, a large fixing force can be obtained.
Therefore, even if the rotation speed of the tool dish 57 or the lapping machine 55 is increased or the work pressing force by the tool dish 57 is increased, the position of the work W is not likely to be displaced during the work.

Further, since the jig 1 is completely fixed in the vicinity of the work W, the position of the work W can be finely adjusted by adjusting the protruding state or the pressed state of the pressing body 20. It is easy to accurately fix the to the desired position. Further, since it is not necessary to make adjustments based on intuition or experience, the fixing work can be completed in a short time even by an unskilled person.

(Second Embodiment) FIG. 5 shows a second embodiment of the present invention. The workpiece fixing jig 1a of the second embodiment
Has the same configuration as that of the first embodiment except that the force transmission member is different.

The force transmitting member 13a of the second embodiment is rod-shaped as shown in the drawing, and has a shaft 14 provided substantially at the center thereof.
Can be swung around. The tip end of the operation member 17 is in contact with the side surface 15a of the force transmission member 13a on the operation member 17 side, and the operation member 17 has its longitudinal direction (direction of arrow A).
When it is moved to, it swings in the direction of arrow D. Curved end surface 1 of the force transmission member 13a on the pressing body 20 side
6a engages with the engagement surface 25 of the engagement portion 21 of the pressing body 20, and can push the pressing body 20 outward when the force transmission member 13a swings.

(Third Embodiment) FIG. 6 shows a third embodiment of the present invention. The workpiece fixing jig 1b of the third embodiment
Is different from the first embodiment in the mechanism accommodating portion, the force transmission member, and the pressing body. Force transmission member 13b of the third embodiment
Is a round bar shape having a head with a large diameter as shown in the drawing, and is movable in the long axis direction (direction of arrow A) in the through hole provided in the peripheral wall of the mechanism housing portion 10b. .. A flat engagement surface 15b is formed on the head of the force transmission member 13b, and an inclined engagement surface 16b is formed at the tip thereof.

The pressing body 20b of the third embodiment has a contact portion 23.
Is the same as that of the first embodiment, but one support portion 22
It is supported by b and is different in that the engaging portion 21 does not exist. As shown in the drawing, the tip of the support portion 22b is formed in a V shape, and an inclined engaging surface 25 is formed therein. The engagement surface 25 and the engagement surface 16b of the force transmission member 13b have substantially the same inclination.

The structure of the mechanism accommodating portion 10b is changed according to the difference in the structure of the force transmitting member 13b and the pressing body 20b as described above.

The operating member 17 rotatably attached to the peripheral wall of the mechanism accommodating portion 10b has its tip abutted against the engaging surface 15b of the force transmitting member 13b, and the operating member 17 moves inward along the arrow A. Then, accordingly, the force transmission member 13
Move b inward. Then, the inclined engaging surface 16b of the tip of the force transmitting member 13b is engaged with the engaging portion 2 of the pressing body 20b.
Sliding with the inclined engaging surface 25 of No. 1 causes the pressing body 20b to be pushed out along the arrow C. In this way, the outer surface of the work W can be pressed.

The shape of the pressing body is not limited to the one illustrated in each of the above-mentioned embodiments, and can be appropriately changed according to the shape of the pressed portion of the work W and the like. Further, the operation member 17 may be any member to which force is applied by an operator, and the structure thereof is not limited. Further, the configuration of the force transmission member is not limited to the configuration of the above embodiment as long as it can transmit the force of the operation member to the pressing body.

[0036]

According to the work fixing jig of the present invention,
There is an effect that it is easy to fix the work accurately at a desired position, the work can be performed in a short time, and skill is not required for the work. Further, there is an effect that the position of the fixed work is extremely unlikely to shift.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional plan view showing a first embodiment in which the work fixing jig of the present invention is configured for a lapping device.

FIG. 2 is a plan view showing a state where a ceramic disk is fixed on a lapping machine by using the jig of the present invention.

FIG. 3 is an overall view showing a schematic configuration of a lapping device.

FIG. 4 is an enlarged front view of an essential part of the lapping machine in a state where the grindstone of the tool dish is in contact with the work surface.

FIG. 5 is a view similar to FIG. 1, showing a second embodiment of the present invention.

FIG. 6 is a view similar to FIG. 1, showing a third embodiment of the present invention.

[Explanation of symbols]

 1, 1a, 1b Work fixing jig 10, 10b Main body 11, 11b Mechanism accommodating portion 12 Fixing portion 13, 13a, 13b Force transmitting member 14 Shafts 15, 15a, 15b Engaging surface 16, 16a, 16b of force transmitting member Engaging surface 17 of force transmitting member 18 Operation member 18 Bolt hole 20, 20a Pressing body 21 Engaging portion 22, 22b Supporting portion 23 Pressing portion 24 Pressing surface 25, 25b Engaging surface of engaging portion of pressing body 50 Lapping device 51 Main body of lapping device 52 Swing mechanism 53 Arm 54 Cylinder 55 Lapping machine 56 Dust receiver 57 Tool tray 58 Engagement groove M1 Spindle motor M2 Swing motor M3 Upper shaft motor S1 Main shaft S2 Transmission shaft S3 Upper shaft W Work G Grindstone

Claims (1)

[Claims] 1. A main body that can be fixed to a processing table, a work pressing body that is movably attached to the main body, and an operating means that is provided on the main body and that is operated to move the work pressing body. And a force transmitting means provided on the main body for transmitting the force given by the operating means to the work pressing body, and moving the pressing body toward the work by operating the operating means. A jig for fixing workpieces that is possible.