JP2002239893A - Work mounting jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and quickly mount a shaft with a number of works on a jig. SOLUTION: This work mounting jig 1 to be used for a barrel polishing device comprises the shaft 2 for holding a work W, holding plates 3 opposed to each other with slits 3a engraved ranging from predetermined positions in which the shaft 2 is mounted to the outer periphery ends, and fastening means 2a, 2b for fixing the shaft 2 to the opposed holding plates 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a workpiece mounting jig for polishing a workpiece by holding the workpiece on a shaft and fixing the shaft in a barrel polishing apparatus.

[0002]

2. Description of the Related Art In a barrel polishing method, a work is thrown into a barrel together with a grinding stone in a free state, and the barrel is rotated or the like to cause a relative motion difference between the work and the grinding stone to grind the work. This is a polishing method. However, when the work is easily damaged, the work may be mounted on a jig so as not to collide with each other. For example, if the work is a ring, a large number of works may be mounted in a skewered shape through a shaft through the ring, and the shaft may be fixed and polished. Specifically, as shown in FIGS. 1 and 2, a large number of ring-shaped works W are dropped into a plurality of shafts 42 each having one end fixed to a disk 43, and finally the same number of holes-shaped disks 44 as the shafts 42. Cover from above and fix. The work mounting jig 41 thus obtained is loaded into a barrel, and the barrel is rotated to grind the work.

[0003]

However, since the mounting jig 41 must be placed so that the shaft 42 passes through the hole 44a of the disk, the shaft 42 may be warped or the shaft of the shaft 42 may be in contact with the disk. If the axis of the hole 44a is shifted, there is a problem that the disk 44 cannot be covered. This problem becomes more pronounced as the number of shafts increases for mass production.

[0004] The present invention has been made in view of the above problems, and a purpose thereof is to easily mount a shaft and to securely fix a plurality of shafts to a holding plate. Is to provide a mounting jig.

[0005]

That is, a first object of the present invention is to provide a work mounting jig used in a barrel polishing apparatus, comprising a shaft for holding a work, and a shaft for loading the shaft. A work mounting jig comprising: a holding plate having slits formed in the outer periphery from a predetermined position; and a fastening unit for fixing the shaft to the holding plate. is there.

According to this, the shafts on which the workpieces are mounted are inserted one by one into the slits of the holding plate, and then both ends of the shafts are fixed by fastening means such as nuts, so that a plurality of shafts can be easily mounted.

Next, a second object of the present invention is to provide a work mounting jig used in a barrel polishing apparatus, which holds a work and has a shaft provided with a plate on one side, and a predetermined shaft for loading the shaft. A first holding plate having a slit engraved from the position to the outer peripheral end and a counterbore provided in the slit and fitted with the plate, and the shaft is inserted facing the first holding plate; A work holding jig comprising: a second holding plate having a slit engraved from a predetermined position to an outer peripheral end thereof; and fastening means for fixing the shaft to the second holding plate. It is.

According to this, after the shaft on which the work is mounted is inserted into the slit of the holding plate, it can be fixed only by the fastening means of one of the holding plates, so that a plurality of shafts can be mounted quickly and reliably.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings.

<First Embodiment> FIGS. 3 and 4 show a first embodiment of the present invention.
1 shows a mounting jig 1 according to an embodiment. A large number of ring-shaped works W are inserted and held in the shaft 2, and regulation plates 22 for preventing movement of the works are attached to both sides thereof.
This shaft 2 has a nut 2a and a washer 2 at both ends.
It is fixed to the two holding plates 3 by b.

On the other hand, the base end of the slit 3a is formed in the holding plate 3 at equal intervals on the same circumference, and the slit 3a is formed from the base end in the radial direction to the outer end.
In this example, a plurality of base ends of the slit 3a are formed at equal intervals on two circumferences. Note that the shape of the holding plate 3 may be not only a circular shape but also a polygonal shape. The work W
In order to fix the shaft 2 on which the shaft 2 is mounted, first, the shaft 2 is inserted along the slit from the outer peripheral end of the slit 3a located at a position opposite to the two holding plates 3. Shaft 2
Is inserted up to the position of the base end of the slit 3a, where it is fastened by the nut 2a and the washer 2b.

Two holding plates 3 are opposed to each other, and their central axes are connected by a shaft 4. Support disks 5 are fixed to both ends of the shaft 4. The holding plate 3 is provided with three beams 6 at equal intervals to reinforce the opposing holding plate 3 and also serve as a hook when the mounting jig 1 is inserted into a barrel described later. ing. Reference numeral 7 denotes a collar for positioning the hook when the mounting jig 1 is suspended by a lifting hook (not shown).

FIGS. 5 and 6 show a state in which the mounting jig 1 of the present invention is inserted into the barrel 8. The barrel 8 is composed of a steel frame 8a and an inside with a urethane lining 8b, and has an octagonal cross-sectional shape. And two of the torso that are adjacent
The surface is an opening 9 so that the lid 10 is covered. The lid 10 is also constituted by a steel frame 10a and the inside thereof by a urethane lining 10b. To mount the lid 10 on the barrel 8, a clamp shaft 12 is inserted into holes 11 a of stays 11 provided at both ends of the barrel 8, and a handle 12 a provided on the clamp shaft 12 is provided.
Is rotated. Then, the eccentric cam 12b provided on the clamp shaft is in contact with the friction plate 13 provided on the upper surface of the lid 10 so that the lid 10 is pressed and crowned on the barrel 8.

On the other hand, receiving members 14 for supporting the supporting disk 5 of the mounting jig 1 are provided at both ends inside the barrel 8. The receiving member 14 is provided at a position where the supporting disk 5 coincides with the central axis of the barrel 8. Further, a gate-shaped pusher 15 is disposed above the mounting jig 1, and both legs thereof are configured to be fitted to the support disk 5 and the receiver 14 of the mounting jig 1. A urethane stopper 16 is fixed to the upper part of the pusher 15 by a bolt or the like so as to be adjustable in height, and the urethane plate 1 provided inside the lid 10 along the longitudinal direction.
7 so as to securely hold the mounting jig 1 in the barrel 8.

A boss 18 is provided at the center axis at both ends on the outside of the barrel 8.
Is provided, and is fixed to a barrel rotation shaft (not shown) so that the barrel 8 rotates. 19 is a weight for balancing the weight with the clamp shaft 12 and the like.

Next, a description will be given of the operation when polishing a workpiece according to the present invention. First, many ring-shaped workpieces W
Is mounted on the shaft 2. After that, the regulating plates 22 are attached to both ends. Both ends of the shaft 2 are gripped and inserted into the slits 3a of the two holding plates 3 to be inserted into the base position.
Both ends are fastened with a nut 2a and a washer 2b.
In this way, the shaft with work 2 is fixed to the holding plate 3 in order. When the mounting of the shaft 2 is completed, the beam 6 of the mounting jig 1 is hung by a hook (not shown) and lifted.
It is inserted through the opening 9 of the barrel 8, and the supporting disk 5 is fitted to the receiving device 14.

Thereafter, the pusher 15 is inserted from above, and both legs are fitted to the support disk 5 and the receiver 14, thereby holding the mounting jig 1. Next, a required amount of abrasive stone is charged. Water and compounds will also be added as needed. Finally, the lid 10 is covered. Thereafter, when the clamp shaft 12 is inserted into the hole 11a of the stay 11 and rotated with the handle 12a,
The eccentric cam 12b presses and rolls on the friction plate 13 of the lid 10 to cover the lid 10. At this time, since the urethane plate 17 provided on the lid 10 presses the urethane stopper 16 of the pusher 15 in the barrel 8, the mounting jig 1 is securely held in the barrel 8.

Next, the barrel 8 is rotated by a barrel rotating shaft (not shown) and polished for a predetermined time. When the polishing is completed, the mounting jig 1 is taken out by the reverse operation, and the work W is removed from the shaft 2 to finish.

<Second Embodiment> Next, a mounting jig 51 according to a second embodiment of the present invention will be described with reference to FIGS. A circular plate 20 is provided on one side of the shaft 2. The plate 20 has a circular shape, but need not be limited to this, and it is sufficient that the plate 20 fits into a counterbore formed in the holding plate 31. In addition,
This shaft 2 is exactly the same as the shaft 2 of the first embodiment except that a plate 20 is provided. The holding plate 31 is a first holding plate of the present invention and is a slit 31a.
A bottomed counterbore 21 in which the plate 20 fits is formed around the base end. Except for the counterbore 21, the holding plate 3 of the first embodiment is provided. They are exactly the same. The depth of the counterbore 21 is approximately half the thickness of the holding plate 31. The other holding plate 32 is the second holding plate of the present invention and has a slit 32a, but is exactly the same as the holding plate 3 of the first embodiment. Other parts are exactly the same as those of the mounting jig 1 of the first embodiment, and the description is omitted.

Next, an operation based on this embodiment will be described. A number of ring-shaped works W are mounted on the shaft 2 with the plate 20. The shaft 2 is inserted into the slits 31a and 32a of the holding plates 31 and 32, and is inserted to the position of the base end. Next, the shaft 2 is slightly moved in the direction of arrow E in FIG. 7 to fit the plate 20 into the counterbore 21. Then, the shaft 2 is fixed from the side of the holding plate 32 with the nut 2a and the washer 2b. Subsequent operations are the same as in the first embodiment, and a description thereof will be omitted.

<Third Embodiment> Next, a mounting jig 61 according to a third embodiment of the present invention will be described with reference to FIGS. One side of the shaft 2 has a circular plate 20
Is provided. The holding plate 71 is a first holding plate of the present invention, in which a slit 71a is provided, and a bottomed counterbore 21 in which the plate 20 is fitted is formed around the base end thereof. It is exactly the same as the first holding plate 31 in the form. The other holding plate 72 is the second holding plate of the present invention and has a slit 72a, and a screw hole 72b is formed at the base end of the slit 72a. The fastening means here is a bolt 73a and a washer 73b. The bolt 73a is screwed into the screw hole 72b, and a bottomed hole 74 into which the shaft 2 can be inserted is formed at the tip. . Other parts are exactly the same as the second holding plate 32 of the second embodiment, and the description is omitted.

Next, the operation based on this embodiment will be described. A number of ring-shaped works W are mounted on the shaft 2 with the plate 20. The shaft 2 is inserted into the slits 71a and 72a of the holding plates 71 and 72, and is inserted to the position of the base end. Next, the shaft 2 is slightly moved in the direction indicated by the arrow F in FIG. 9 to fit the plate 20 into the counterbore 21. Then, from the side of the holding plate 72, a bolt 73a and a washer 73b
To fix the shaft 2. At this time, the bolt 73 is inserted so that the shaft 2 is inserted into the bottomed hole 74 of the bolt 73a.
a is screwed into the screw hole 72b. Thus, the fixing of the shaft 2 is completed. Subsequent operations are the same as in the first and second embodiments, and a description thereof will be omitted. This embodiment is effective when the shaft is particularly thin.

Although the above three embodiments have been described for the case of a rotary barrel polishing apparatus, the present invention can be similarly applied to a centrifugal barrel polishing apparatus in which the barrel rotates and revolves.
The means for fastening the shaft to the holding plate is not limited to nuts and bolts, but may be a thumbscrew type or other fastening means. In short, anything may be used as long as each shaft can be securely fixed.

[0024]

As described above, according to the jig of the present invention, a large number of shafts with workpieces can be easily and quickly and securely mounted and fixed, so that the jig has an outstanding effect as compared with conventional jigs. .

[Brief description of the drawings]

FIG. 1 is a front sectional view of a conventional jig (a view taken along the line AA in FIG. 2).

FIG. 2 is a plan view of the same.

FIG. 3 is a front cross-sectional view of the mounting jig according to the first embodiment of the present invention (a view taken along the line BB in FIG. 4)

FIG. 4 is a side view of the same.

FIG. 5 is a front sectional view of the mounting jig held in a barrel (FIG. 6);
C-C arrow view)

FIG. 6 is a side sectional view of the same (viewed along the line DD in FIG. 5).

FIG. 7 is a front sectional view of a mounting jig according to a second embodiment of the present invention.

FIG. 8 is an enlarged perspective view of the counterbore hole portion.

FIG. 9 is an enlarged front sectional view of a main part of a mounting jig according to a third embodiment of the present invention.

FIG. 10 is a plan view of the second holding plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Mounting jig 2 ... Shaft 2a ... Nut (fastening means) 2b ... Washer (fastening means) 3 ... Holding plate 3a ... Slit 8 ... Barrel 20. ··· Plate 21 ··· Counter bore 31 ··· First holding plate 31a ··· Slit 32 ··· Second holding plate 32a ··· Slit 51 ··· Mounting jig 61 ··· Mounting jig 71: first holding plate 71a: slit 72: second holding plate 72a: slit 73a: bolt (fastening means) 73b: washer (fastening means) W: work

Claims (2)

[Claims] 1. A work mounting jig used for a barrel polishing apparatus, comprising: a shaft for holding a work; and a slit having a slit formed from a predetermined position for inserting the shaft to an outer peripheral end. A work mounting jig, comprising: an opposing holding plate; and fastening means for fixing the shaft to the opposing holding plate. 2. A workpiece mounting jig used in a barrel polishing apparatus, comprising: a shaft holding a workpiece and having a plate on one side; and a cutting tool extending from a predetermined position for loading the shaft to an outer peripheral end. A first holding plate having a slit provided therein and a counterbored hole connected to the slit and into which the plate fits, and an outer peripheral end from a predetermined position facing the first holding plate for inserting the shaft. A work mounting jig comprising: a second holding plate having a slit engraved over the second holding plate; and fastening means for fixing the shaft to the second holding plate.