JPH04122408U - Holding jig - Google Patents

Abstract

(57) [Summary] [Purpose] To improve work efficiency by holding a shaft workpiece and a hole workpiece without performing setup change work. [Structure] A workpiece abutment member is disposed at the tip portion so as to be movable back and forth in the axial direction, and the workpiece abutment member is biased forward by an elastic member and positioned in the axial direction by a stopper; A collet fitted into an inner hole of a backing member, and a connector having a center formed at its tip and an expander formed immediately behind the center, and the connector is connected so that the expander is located in the collet. A holding jig characterized in that it is disposed in the inner hole of the arbor so as to be movable back and forth and is connected to a rod operated by a hydraulic or air pressure cylinder.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention consists of a shaft-shaped workpiece with a center hole on both end faces and an annular workpiece with an inner diameter hole. This invention relates to a holding jig that holds a workpiece.

0002

[Conventional technology]

Conventionally, when measuring workpieces, etc., as shown in Figure 4, a center hole is placed on both end faces. A shaft-shaped workpiece (hereinafter referred to as shaft workpiece) A having a pair of centers 2, 2 Attach and hold it in the center holes 1 and 1 on both end faces, and as shown in Figure 5, An annular workpiece B having a hole 3 (hereinafter referred to as a hole workpiece) is It grasps and holds the diameter hole 3.

0003

[Problem that the idea aims to solve]

By the way, conventionally, as mentioned above, the shaft A is held using the center 2, and the hole B is held using collet arbor 4, so it can be moved from shaft A to hole B or When changing the workpiece, such as from hole workpiece B to shaft workpiece A, from center 2 to collet Holding jig to torbar 4 or from collet arbor 4 to center 2. It is necessary to change the setup of the tools, and this changeover takes time and effort. There was a problem that the workability was poor.

0004 Therefore, this invention was devised in view of these conventional problems. The aim is to hold shaft A and hole B without changing setups. This provides a holding jig that allows for

[0005]

[Means to solve the problem]

In order to achieve the above-mentioned purpose, this invention has a workpiece attached to the tip so that it can move back and forth in the axial direction. The workpiece abutting member is urged forward by the elastic member and the stopper is applied to the workpiece. A workpiece abutment member positioned in the axial direction and a workpiece abutment member inserted into the inner hole of the workpiece abutment member. A center is formed at the tip of the collet, and an exhaust is formed immediately behind the center. and a connector forming a spander, and connect the connector to the collet. The expander is placed in the inner hole of the arbor so that it can be moved back and forth. with a holding connected to a rod operated by a hydraulic or pneumatic cylinder Provide jigs.

[0006]

[Effect]

When holding a shaft object, the holding jig of this invention uses a hydraulic or air pressure cylinder. When the connector is pulled backwards through the rod, the connector will be extracted. Expand the diameter of the collet with a pander and fix it in the inner hole of the workpiece contact member, thereby connecting The connector is fixed to the workpiece holding member via the collet and shaped at the tip of the connector. The formed center can be fixed, and a shaft object can be attached to and held at this center.

[0007] In addition, when holding a hole-shaped object, insert the hole object into the center of the connector and When the workpiece is pressed against the abutment member, the workpiece abutment member retreats against the spring, so The collet that was inserted into the inner hole of the workpiece holding member is inserted into the hole, and in this state, , operate the hydraulic or pneumatic cylinder to rearward the connector through the rod By pulling the collet into the hole, the expander of the connector The diameter is expanded with a diameter hole, and the hole is firmly fixed and held.

[0008]

【Example】

Hereinafter, the holding jig of the present invention will be explained in detail with reference to FIGS. 1 to 3.

[0009] FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and 5 is a sleeve of a tailstock, etc. The arbor is fixed to the tip of 6, and there is a workpiece attached to the outer circumference of the tip that can be moved back and forth in the axial direction. A workpiece abutment member 7 is provided, and the workpiece abutment member 7 is urged forward by a spring 8. It is positioned in the axial direction by pressing it against the stopper 9. 10 is at the tip A center 11 is formed, and an expander 12 is formed immediately behind the center 11. The expander 12 is inserted into the inner hole 13 of the workpiece contact member 7 using the connector. It can be freely moved back and forth into the inner hole 15 of the arbor 5 so as to be located at the tip of the inner hole of the collet 14. installed and operated by hydraulic or pneumatic cylinders not shown. The rod 16 is connected to the

0010 Next, the operation of the holding jig of the present invention with the above configuration will be explained.

[0011] When holding shaft A, use a hydraulic or pneumatic cylinder (not shown). Operate to pull connector 10 rearward via rod 16. Then the connector The collet 14 is expanded in diameter by the expander 12 of 10 and inserted into the inner hole 13 of the workpiece contact member 7. The connector 10 is now firmly fixed through the collet 14. The center 11 formed at the tip of the connector 10 is fixed to the workpiece holding member 7. It is fixed, and as shown in FIG. 2, the shaft A can be mounted and held on the center 11.

0012 Also, if you want to hold the hole-shaped object B, insert the hole-shaped object B into the center 11 of the connector 10. and press it against the workpiece abutment member 7. This causes the workpiece abutment member 7 to spring In order to retreat backward against the biasing force of 8, it is inserted into the inner hole 13 of the workpiece abutting member 7. The collet 14 that had been installed is inserted into the inner diameter hole 3 of the hole piece B. In this state, the Connector 10 through rod 16 with no hydraulic or pneumatic cylinder operation When the collet 14 is pulled backward, the expander 12 of the connector 10 causes the collet 14 to become Expand the diameter with the inner diameter hole 3 of B, and as shown in Fig. 3, the hole B can be firmly fixed and held. Wear.

[0013] In this way, the holding jig of the present invention eliminates the need to change the setup of the shaft A and the hole B. can be held.

[0014]

[Effect of the idea]

As explained above, the holding jig of the present invention can be used to change the setup of shaft objects and hole objects. It is effective in reducing the time and effort required for changeover work, since it can be held without any changes. This results in a significant improvement in work efficiency.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing a holding jig of the present invention.

FIG. 2 is a longitudinal sectional view showing a state in which a shaft is held by the holding jig of the present invention.

FIG. 3 is a longitudinal sectional view showing a state in which a hole-shaped object is held by the holding jig of the present invention.

FIG. 4 is a longitudinal cross-sectional view showing a state in which a shaft is held by a conventional center.

FIG. 5 is a longitudinal sectional view showing a conventional collet arbor holding a holed object.

[Explanation of symbols]

A. Axle object B Anonymous 5 Arbor 7 Workpiece support member 10 connector 11 center 12 Expander 14 Colette 16 rods

Claims (1)

[Scope of utility model registration request] 1. A workpiece abutting member disposed at a distal end thereof so as to be movable back and forth in the axial direction, the workpiece abutment member biased forward by an elastic member and positioned in the axial direction by a stopper; A collet fitted into the inner hole of the workpiece contacting member, and a connector having a center formed at the tip and an expander formed immediately behind the center, the expander being positioned in the collet. A holding jig characterized in that it is disposed in the inner hole of the arbor so as to be movable back and forth, and is connected to a rod operated by a hydraulic or pneumatic cylinder.