JPH0911074A - Jig replacing method - Google Patents

Abstract

PURPOSE: To reduce the space for storing jigs by selectively rearranging and replacing an upper group and a lower group on a base. CONSTITUTION: A support device 7 for a lower group is taken out from a fixing device 2. Subsequently, a support device 7 suitable for the next lot raw material 1 to be worked is placed, a ball lock is inserted after confirming the positional relationship with a centering jig, and a hexagon socket head bolt of a taper ball lock is screwed in to ensure an accurate position. Subsequently, all members assembled to a pedestal 4 belonging to an upper group suitable for the next working lot raw material are placed in such a manner that the recessed members are inserted to the projecting members of the base 3 to the limit of insertion, and fixed by rotating a handle of a gib type fixing mechanism 8 clockwise. Thus, fixing jigs can be replaced between the upper and lower groups by combination before and after setup of raw materials to be worked, that is, by the operation of the taper ball lock or the gib type fixing mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a step change of a jig for fixing a work in a material processing step.

[0002]

2. Description of the Related Art In general, a work fixing method is to support and position a portion corresponding to the shape of a work. Therefore, even if a similar work or one position has a different position and shape for supporting and positioning, a jig dedicated to the work is manufactured. I have to prepare. Then, even works having various similar shapes must be manufactured one by one, the equipment cost becomes enormous, and a large space is required for a storage place.

Moreover, the number of processed pieces for each lot has become smaller and smaller in recent years, and it has become necessary to frequently replace a dedicated fixing jig. In such a case, the conventional method of fixing jigs is to use knock pins and tightening bolts, and it takes time to tighten multiple bolts, and all jigs must be replaced in their entirety. Needed.

[0004]

Therefore, what the present invention intends to solve is to realize a method in which the space for storing jigs is reduced, the weight of jig change is as small as possible, and the jigs can be easily fixed. Especially.

[0005]

SUMMARY OF THE INVENTION An upper group consisting of a pedestal, a clamping means and a supporting and positioning means or a clamping means and / or a supporting and positioning means on a base having means for inserting and fixing with a beveled gib. Both lower and lower groups are selectively rearranged, and the lower group and the pedestal are mounted with a positioning taper lock, and the upper group and the base are assembled with the gib to accommodate various lots. Change the stage with the fixed jig group.

[0006]

Then, when only the means of the lower group are different, only the clamp means and / or the support positioning means on the pedestal have been set up by exchanging, and the positioning taper lock is detachable and attached, so that the positioning accuracy is accurate. Moreover, since it is light in weight, its operation does not require time and labor. When the clamp means and supporting and positioning means are different, the work is done in a short time and is fixed tightly in the horizontal right angle by operating and removing the handle that acts on the gibb of the base together with the pedestal. Therefore, the positioning accuracy can be made accurate.

[0007]

Embodiments of the present invention will be described with reference to the drawings. First, explaining the drawings, FIG. 1 is an overall plan view of a fixing device 2 for fixing a material 1 to be processed to a processing machine (not shown). FIG. 2 is an overall side view of the fixing device 2 seen from an operator (not shown) who handles the material 1 to be processed. FIG. 3 is an overall side view of the fixing device 2 as viewed from the right of an operator (not shown) who handles the material 1 to be processed. In FIGS. 1 and 2, clamp devices 5 and 6 are mounted and fixed on a pedestal 4 which is detachably mounted on a base 3,
Further, a supporting device 7 in which a rod-shaped jig for supporting the material 1 is erected.
Is mounted and fixed on the pedestal 4 in a detachable manner.

Further, FIG. 3 shows that the clamp device 5 is not shown, and instead, a gib type fixing mechanism 8 for detachably mounting and fixing the pedestal 4 on the base 3 is provided. Then, on the machine base 3, a convex member 9 having an inverted trapezoidal cross section,
It is also shown that the substrate 4 is provided with the concave portion 10 for the convex member 9. 4A is a plan view of only the base 4, and FIG. 4B is an elevation view. The clamp devices 5 and 6 are composed of a pedestal 11, clamp cylinders 12 and 12, and clamp hands 13 and 13. It also indicates that
In addition, the support device 7 is mounted on the base 4 with the tapered ball lock 14.
It is fixed to. 5A is a plan view of the supporting device 7, and FIG. 5B is an elevation view thereof. A flat plate 15 is provided with a hole 16 for a tapered ball lock 14, and the material 1 is placed on the plate. Supporting rod-shaped supporting rods 17, 18, 19, 20 are screwed and fixed.

FIG. 6 is a cross-sectional view of the gib type fixing mechanism 8. When the handle 21 is rotated, the equipment 24 whose rotation is restricted is driven leftward and rightward in the drawing by a screw 23 integrally provided on the shaft 22. By doing so, it is shown that the tapered gib 25 is driven to the left and right in the drawing. That is, one side of the convex member 9 of the base 3 is also provided with a taper parallel to the tapered gib 25, and the pedestal 4 is fixed by their relative movement. FIG. 7 is a cross-sectional view showing that the flat plate 15 is fixed to the pedestal 4 by the tapered ball lock 14, and centering jigs 26 and 27 having conical holes are screwed to the base 4 and the flat plate 15. , A ball lock 29, which is designed so as not to drop the balls 28, 28, 28, 28 so as to pass through them, is inserted, and a hexagon socket head cap bolt 30 is pushed in to insert the ball 2 through the member 31.
8, 28 and 28 are pressed against the inner wall of the conical hole of the centering jig 26 and urged.

A method of replacing the fixing jig will be described with reference to the drawings. In the lower group, that is, the supporting rods 17, 18, 19, 20 of the supporting device 1 to 4 are different from those of the next lot material 1. At this time, the hexagon socket head cap screw 30 of the tapered ball lock 14 is rotated counterclockwise to rotate the balls 28, 2
When the pressing urging force of 8 and 28 is released to make it movable, the ball lock 29 can be pulled out from the centering jigs 26 and 27, the pedestal 4 and the flat plate 15 of the supporting device 7 are separated, and the supporting device 7 Is taken out from the fixing device 2. And a supporting device 7 suitable for the material 1 of the lot to be processed next
(For example, only the support rod 19 is different, and the centering jig 2
(The position of 7 is the same), the ball lock 29 is inserted after confirming the positional relationship between the centering jigs 26 and 27, and the hexagon socket head cap bolt 30 of the taper ball lock 14 is screwed in. The position can be secured, and the replacement of the fixing jig for a new lot is completed only by confirming the first processing dimension.

Subsequently, when the clamp position is different from that of the upper group, that is, the next lot material 1, when the handle 21 of the gib type fixing mechanism 8 is rotated counterclockwise, the base 3
The tapered gib 25, which is in contact with one of the convex member 9 and one of the concave portion 10 of the base 4, moves in the taper direction by the screw 23 and the linear movement mechanism of the rotation-controlled device 24 to overcome the frictional force and move. Then, the frictional force is released and the pedestal 4 can be pulled out from the base 3 and removed from the fixing device 2. Then, all the members to be assembled to the pedestal 4 belonging to the upper group suitable for the next processing lot material are placed by inserting the concave member 10 into the convex member 9 of the base 3 up to the insertion limit, and then the handle of the gib type fixing mechanism 8. 21 is rotated clockwise and fixed.

Depending on the combination of the materials processed in this way before and after the setup, it is possible to change the setup of the fixing jig by operating the taper ball lock or the gib type fixing mechanism within the range of the upper or lower group. In this embodiment, the upper and lower line drawing is only an example, and many variations in which one or more support rods and / or clamping means are included in the upper group are conceivable, and the upper middle and lower line drawing may be performed, but It is desirable to use a few groups because overdrawing is labor intensive in terms of management.

[0013]

As described above, the shape of the material to be machined in the processing machine is initially observed, the common functional parts are mainly divided into groups, and the setup change is carried out in the lowest possible group. Since the taper ball lock or the upper part is operated by a gib-type fixing mechanism, it can be done easily and in a short time without affecting the quality, and the jig management space can be minimized.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a fixing device that is fixed to a processing machine.

FIG. 2 is an overall side view of the fixing device seen from an operator (not shown).

FIG. 3 is an overall side view of the fixing device viewed from the right side of the operator.

FIG. 4 (a) is a plan view of the upper group, and FIG. 4 (b) is an elevation view thereof.

5A is a plan view of a lower group, and FIG. 5B is an elevation view thereof.

FIG. 6 is a sectional view of a gib-type fixing mechanism.

FIG. 7 is a sectional view showing that a flat plate is fixed to a pedestal by a taper ball lock.

[Explanation of symbols]

 1 Material 2 Fixing Device 3 Base 4 Pedestal 5 Clamping Device 6 Clamping Device 7 Supporting Device 8 Gibb Type Fixing Mechanism 9 Convex Member 10 Recess 11 Cage 12 Clamping Cylinder 13 Clamping Hand 14 Tapered Ball Lock 15 Flat Plate 16 Hole 17 Supporting Rod 18 Supporting Rod 19 Support rod 20 Support rod 21 Handle 22 Shaft 23 Screw 24 Equipment 25 Tapered gib 26 Jig 27 Jig 28 Ball 29 Ball lock 30 Hexagon socket head bolt 31 Member

Claims (1)

[Claims] 1. A method for changing a lot of work pieces to a fixing jig corresponding to the shape of the work pieces, the support positioning means being a lower group for commonly positioning the work pieces, and / or a lower order for clamping the work pieces in common. The above-mentioned fixing jig composed of a clamp means which is a group and a pedestal for assembling them is provided as an upper group, and selectively from a fixing jig group corresponding to various lots constituted by changing the upper or lower group. When it is possible to change the stage by only changing the lower level, the positioning taper lock is used to assemble it to the pedestal, and the upper level change is used to mount the grade on the platform that is always mounted on the processing machine. A jig changing method characterized by changing to a fixed jig that is selectively configured regardless of the lower order.