JPS58206334A - Quick exchange tool holder - Google Patents

Abstract

PURPOSE:To easily obtain dimensional accuracy further promptly mount and remove a tool, by securing an adapter to a tool mounting shaft end part and fitting the tool to an adapter boss part while fixing the tool with a spreadable stopper ring. CONSTITUTION:One side of an adapter main unit 1 is positioned and secured to a tool mounting shaft end part by a shaft 13. A tool main unit 2 is positioned to the other side of the unit 1 by a tapered boss part 11. A stopper member 3 is fitted in the adapter main unit, and a stopper ring is fitted to a head part of the stopper member. A stopping part 45 of the stopper ring is inserted from a notch 25 of a tool and rotated, and then the stopper ring is openably spread by retracting the stopper member, thus the tool is fixed to the adapter main unit.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tool holding device that enables rapid exchange of a cutting tool body to an adapter body fixed to the end of a tool mounting shaft of a machine tool by a desired means.

Conventionally, a cutting tool that is fixed to the end of a tool mounting shaft of a machine tool has two radial parts corresponding to the shaft end and an uneven part to prevent center runout at the end and the center of the two radial parts. The cutting tool was fastened and fixed to the tool mounting shaft end by screwing bolts into the two screw holes and a plurality of screw holes provided near the outer periphery of the shaft end.

However, with the above fixing method, if the cutting edge specifications of the insert change due to a change in the machining diameter of the workpiece or the required accuracy of the machined surface of the workpiece, the tool body may need to be replaced. After removing all the bolts used for fixing, remove the tool body from the end of the tool mounting shaft, fit the desired tool body to the end of the machine tool shaft in the same manner as above, and then [By means of bolts]: Since the main body of the shell 6 is fixed at the end of the shaft, the time required for replacement is significant and the cost of the product is increased.

This is especially true when producing a wide variety of products in small quantities, where the replacement time becomes more important and the cost increase becomes extremely large. In addition, there are other inconvenient loss factors, such as the long time it takes to change tools, such as the machine tool body 1F due to the loss of a large number of removed tightening bolts.

The present invention was made in view of the above-mentioned problems, and the adapter body is fixed to the end of the tool mounting shaft of a machine tool, and the cutting tool body can be easily attached to and detached from the adapter body with dimensional accuracy and quickly. It is an object of the present invention to provide a tool holding device that has the following features.

In the present invention, the adapter body, which is fixed to the end of the tool mounting shaft by a desired means such as a bolt, moves in the axial direction between a tapered boss portion, a shaft hole into which the shaft of the locking member is fitted, and the locking member. The tool body, which is detachably attached to the tapered boss portion of the adapter body and has a locking member moving means that allows the adapter body to move, has a tapered hole corresponding to the boss portion, a locking member, and a locking ring fitment. A recessed hole is formed with a notch and a locking wall that allow the passage of the locking 1F portion of the locking ring, and the locking member that is inserted into the shaft hole has a tapered head circumferential side. A lock having a radial opening property that fits into the head part.

The tool has a tapered hole corresponding to the tapered shaft of the head and a plurality of resting parts on the circumferential side, and the moving means moves the locking member in the axial direction, and by opening the locking ring and rotating the tool body. This is a tool holding device in which a cutting tool body can be attached to and detached from an adapter body.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 8, the present invention comprises an adapter body 1 having a locking member moving means fixed to the end of a tool mounting shaft of a machine tool (not shown) with a bolt or the like; The tool body 2 is fitted into the tapered boss portion and is detachably fixed, and the adapter is fitted into the shaft hole of the main body 1).
1. The locking portion 5, which is movable in the axial direction by the moving means of the adapter body described in (1), is inserted into the tapered head of the member 11, and is opened in the radial direction as the member moves in the axial direction. The tool body 2 is configured to have a locking mechanism that allows the tool body 2 to be attached and detached from the adapter body 1 by rotation of the tool body.

In the same figure, the adder main body 1 is provided with a tapered boss portion 11 on its force side that engages with the tapered hole of the tool body 2 to position the tool body. A shaft hole 12 is formed into which the shaft of the member 5 is movably fitted. Also, on the other side, this adapter body 1
A shaft 15 is provided for positioning the adapter body by fitting it into a recessed hole at the tool mounting end of a machine tool (not shown), and a stepped hole for inserting a bolt for fixing to the tool mounting end is provided at the outer periphery.
The desired number of holes have been drilled.

Although the shaft hole 12 may be a straight hole, it is preferable to use a large diameter shaft hole 12 and a small diameter shaft hole 121 in view of the relationship between the shaft holes 1 and 1.

In addition, in the central part of the adapter body, there is a bushing fitting hole 15 at a predetermined position in the radial direction apart from the shaft hole 12, a stepped through hole 16 above it, a screw hole 17 with a larger diameter than the hole, and a screw hole 17 below. has a screw hole 17 with approximately the same diameter as the upper screw hole 17. 1. A stepped through hole 18.18 for fitting the bushing positioning screw and a threaded hole 19.19 for screwing the pin fixing screw are cut at right angles to the bushing fitting hole.

On the other hand, a recessed hole 20 is formed at one end of the tool body 2 into which the head of the locking member and the locking pin are inserted. This recessed hole 20 includes a tapered hole 21 corresponding to the tapered boss portion of the adapter body, a through hole 22 that allows the body of the locking ring to pass through, and a three-hole hole 2 into which the locking portion of the locking ring is inserted. A notch 25 that allows the locking portions of the plurality of locking rings to pass through at a predetermined position of the three-hole locking wall 2 of the calyx.
etc., and a chip 5 is fixed to the other end by a tightening bolt 6.

Next, the locking member includes a head part 0 with a tapered peripheral side located in the recessed hole 2o of the tool body 2, and a shaft 51 which is movably inserted into the shaft hole 12 of the adapter body described in I'Iil. And, with a different diameter from this shaft, the shaft hole 12. The shaft 31. Spiked and formed! A +1131 predetermined position is fixed at the same angle of inclination as the inclined groove 101 of the bushing 100, which will be described later.
-200 is provided.

The lock 11 is fitted into the head 3o of the lock member 11. Risig ■ has multiple slit grooves with an extra thickness of 11 + 1 + on one end to allow it to open and contract freely in the radial direction!
2.112, a tapered hole l15 corresponding to the tapered shaft portion of the head cavity 0 of the tool body and a narrow body 4 that fits into the through hole 22 of the tool body 2, and a body 2 on the end side of this body. A plurality of locking portions 115 are provided that can pass through the cutout portions 25 of.

Next, the axial movement of the locking member 5 will be explained. First, talking about this configuration, the bushing 100 that fits into the bushing fitting hole 15 of the adapter body has an inclined groove 101 for fitting on one circumference side, and a groove for preventing rotation of the bushing on the opposite circumference side. A straight groove 102 is provided, and a screw hole 105 for moving the bushing up and down is carved on one end side.

Then, with the inclined groove 101 of the bushing 100 fitted into the bushing fitting hole 15 of the adapter main body aligned with the +-200 pin fixed to the shaft 31 of the locking member, the bushing 100 is inserted into the predetermined position of the fitting hole 15. Positioning pin/7 from the stepped through hole 18 of the main body to the straight groove 102 of the inserted restoring bushing.
7, and fix the pin with the screw 881, and screw the head bolt 9 inserted from the stepped hole 16 of the main body 1 into the screw hole 103 of the bushing to hold it in place.
7, screw the screw 300 for preventing the head bolt 9 from lifting up. In this state, as shown in FIG. 5, since the hexagonal hole 501 of the screw 500 is formed by penetrating it, the hexagonal hole 91 of the head bolt 9 can be rotated by the recess (not shown) without removing the screw 500. This allows the bolt 9 to be kept in a fixed position and the bush 100 to be moved upwardly without causing rotation. Further, as the bushing moves up and down, it is freely moved in the axial direction toward the locking member 5 by means of the bushing 200 fitted in the inclined groove 101.

The tool holding device having the above-mentioned configuration includes the engagement member 5 in which the engagement member 4 is fitted into the head holder 0 and the moving means in advance in the adapter body, and the end face 110 of the adapter body 1 or the tool body 2 is assembled in advance. A control pin 1100 for restricting rotation of the tool body provided on the end face 25 of the tool body and a mounting state 600 when the screw is attached to the kite groove 500 of the same (in this state, the locking portion 115 of the locking member is Notch part 2 of tool body
5), engage the notch 25 of the tool body, pass through the locking part 1i5 of the +h member, fit the tapered hole 21 of the tool body into the tapered boss 11 of the adapter pig body, and turn the tool body counterclockwise. The upper head bolt 9 is turned in the fixed position 700 when the screw is locked, and the head of the member is turned by L/:/C (not shown) to move the bushing 100 upward. When the locking jig ζ inserted into the hole 50 is opened, the locking wall 2 of the tool book 2! and Ringki's IL
The wall lI6 is secured and the tool body 2 is accurately fixed to the adapter body 1.If you wish to remove the tool body from the adapter body, simply rotate the head bolt 9 in the opposite direction from when it was fixed. The bushing 100 moves downward, thereby causing the locking ring to contract in the radial direction and the fixing force is released.In this state, the tool body 2 is rotated clockwise to bring the bushing into the mounting position. The tool body can be easily removed from or attached to the adapter body.

As described above, the present invention opens the locking puffer only by rotating the head bolt, thereby opening the adapter body 1.
This is a highly efficient tool holding device that can easily and precisely securely fix the tool body 2 in a short time, reducing the time required to replace the tool body by 11 times compared to the conventional tool body.

[Brief explanation of the drawing]

The figures are all according to the present invention, and Fig. 1 is a front view of the main part of the tool holding device in cross section, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 5 is a plan view of the main part of the 2M. Figure ζ is Figure 1B
-B sectional view, Figure 5 is a side view of Figure 1, Figure 6 is a front view of the locking ring, Figure 7 is a side view of Figure 6, Figure 8 is the side view of Figure 7.
It is a sectional view taken along line CC in the figure. 1-m-adapter body 2-11 tool body 5-integral locking member key-locking: /g 5-11 tip 6--tightening bolt ? , 7 , ---1 positioning screw 8.81-m-set screw 9-11 head bolt No. 4 Fig. 5 Rod 7 Fig. 6 Fig. 8
figure

Claims (1)

[Claims] (1) The adapter body, which is fixed to the end of the tool mounting shaft by a bolt or other desired means, has a tapered boss part, a shaft hole into which the locking member shaft is fitted, and the above-mentioned engagement part I1 in the axial direction. The tool body has a locking member moving means that allows the locking member to move, and is removably attached to the tapered boss portion of the adapter, and the tool body is provided with a tapered hole corresponding to the boss portion and the locking member. and locking: / A recessed hole for fitting the jig is formed with a notch and a locking wall that allow the locking part of the locking jig to pass through, and a locking hole to be inserted into the shaft hole is formed. The locking member has a tapered head circumferential side, and a locking ring that fits in the head and has a radial receptivity has a tapered hole corresponding to the tapered shaft of the head and a plurality of holes on the circumferential side. The tool has a locking part, and is capable of attaching and detaching the locking member to and from the adapter body by moving the locking member in the axial direction by the moving means, opening the locking jig, and rotating the tool body. holding device.