JPS6035525Y2 - chuck device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a chuck device used for shaft machining.

When a conventional chuck device of this type is used, as shown in Fig. 1, after machining one side of the shaft a, the shaft a is turned over and the chuck device processes the part that was gripped first. A process was needed.

The present invention was developed in view of the above circumstances, and its purpose is to enable cutting of the edge of the workpiece, and to grip the edge of the workpiece with the claw body after the cutting of the edge is completed. It is an object of the present invention to provide a chuck device that can do this, eliminates the need for reversing the workpiece, and contributes to improving the efficiency of cutting the workpiece.

Hereinafter, the present invention will be explained with reference to FIG. 2 and subsequent figures.

Reference numeral 1 in the drawings indicates a base member, and a case 2 is fixed to this base member 1.

A sleeve 4 connected to a rod 3 is provided at the center of the base member 1 so as to be movable in the axial direction.

Further, a face driver 5 is arranged on the axis of the base member 1, and the face driver 5 is attached to the base 1 with bolts 6.
The rond portion 5a of the face driver 5 is inserted into the sleeve 4.

A plunger 8 is attached to the end face of the sleeve 4 with a bolt 9, and the plunger 8 has a fitting insert 10 and a spring seat 11 formed on the same center.

In the drawing, 12 is a collet, 13 is a movable case, and the collet 12 is connected to a bolt 15 via a spacer 14.
The spacers 14 are connected to each other through the insertion holes 1.
0 in a slidable manner.

A stopper 16 is formed at the rear end of the movable case 13, and a stopper 17 facing the stopper 16 is formed on the case 2, and these constitute a stopper mechanism 6.

Further, a spring 18 is interposed between the spring seat 11 of the plunger 8 and the collet 12.

A key 19 is fixed to the movable case 13, and the key 1
9 is slidably inserted into the keyway 20 of the case 2.

A tapered surface 21 is formed on the outer side of the end of the collet 12, and a tapered surface 22 formed on the inner side of the end of the plunger 8 is in sliding contact with this tapered surface 21.

A claw body 23 is attached to the collet 12.

Next, the operation will be explained.

When cutting the end of a workpiece 24 such as a shaft, the claw body 23 is at position A, the workpiece 24 is supported at its end face by a claw 56 attached to the face driver 5, and rotation is applied.

After cutting the end of the workpiece 24, the rod 3 moves to the right, the plunger 8 moves to the right via the sleeve 4, and the spring 1
The collet 12 moves to the right via B, and the claw body 23 moves to the right.

As the collet 12 moves to the right, the movable case 13 moves to the right and its stopper 16 abuts against the stopper 17 of the case 2, and the rightward movement stops and the claw body 23 comes to position B.

When the rod 3 moves further to the right, the tapered surface 22 of the plunger 8
presses the tapered surface 21 of the collet 12, and the claw body 23 provided on the collet 12 grips the end of the workpiece 24.

In this state, the entire surface of the workpiece 24 is cut.

The present invention has been described in detail above. The base member 1 is provided with the face driver 5 that contacts the end face of the workpiece 24 and supports the workpiece 24, and the plunger 8 is attached to the rod 3 that is movable with respect to the base member 1. The collet 12 is arranged inside the plunger 8, and the plunger 8
The collet 12 is connected to the movable case 13, and a spring 18 is provided between the plunger 8 and the collet 12. A tapered surface 22 is formed in sliding contact with the tapered surface 21, and a pawl body 2 is formed on the fret 12.
3 is fixedly installed, and the base member 1 and the movable side case 13 are
This is characterized in that a stopper mechanism 6 is provided for determining the work gripping position of the claw body 23.

Therefore, when the end face of the workpiece is supported by the face driver 5, the claw body retreats to enable cutting of the end of the workpiece, and when the end cutting of the workpiece is completed, the claw body grips the end of the workpiece. This eliminates the need for reversing the workpiece, allowing efficient cutting of the workpiece.

[Brief explanation of the drawing]

Figures I and II are explanatory diagrams of the work order of shaft cutting when a conventional chuck device is used, and Figure 2 is an explanatory diagram of the work order of shaft cutting using the conventional chuck device.
FIG. 3 is a side view of the face driver, and FIG. 4 is a partially cutaway view taken from the direction of FIG. 1 is a base member, 3 is a rod, 5 is a face driver,
6 is a stopper mechanism, 8 is a plunger, 12 is a collet,
21 and 22 are tapered surfaces, and 23 is a claw body.

Claims (1)

[Scope of utility model registration request] The workpiece 2 is placed in contact with the end surface of the workpiece 24 on the base member 1.
A face driver 5 supporting the base member 1 is provided.
A plunger 8 is connected to a rod 3 that is movable relative to the rod 3, a collet 12 is arranged inside the plunger 8, a movable case 13 is arranged outside the plunger 8, and the collet 12 is connected to the movable case 13. A spring 18 is provided between the plunger 8 and the collet 12, a tapered surface 21 is formed on the collet 12, and a tapered surface 22 is formed on the plunger 8 that slides in contact with the tapered surface 21. A claw body 23 is provided on the waist collet 12. A chuck device characterized in that a stopper mechanism 6 is fixedly installed and is provided on a base member and a movable case 13 to determine the work gripping position of a claw body 23.