JPH0453605A - Collet chuck fitter - Google Patents

Abstract

PURPOSE:To simplify the fitting of a collet chuck as well as to prevent the fitted cap from being loosened by pressing an end face of the fitted body with a spring installed in a base cylinder body, and having the projecting piece of an intermediate ring body fitted in an interval between engaged receiving projecting strips themselves of the fitted body. CONSTITUTION:A intermediate ring body (b) is fitted in a collet chuck fitting cylinder 5 of a base cylinder (a), while an engaged pin 9 is fitted in an engaged window 7, and a collet chuck 15 is inserted into a hole 14 in a sleeve which is inserted into the collet chuck fitting cylinder 5. A fitted body (c) is fitted in a small diametral part 3 of the collet chuck fitting cylinder 5 in a state that an engaged projection strip 6 and an engaged receiving projecting strip 13 are engaged with each other, and when a projecting piece 12 of the intermediate ring body (b) is fitted in space between the engaged receiving projections 13 themselves, the intermediate ring body (b) and the fitted body (c) both comes to a state of being locked. Then, a spring receiving surface 10 of the ring body (b) is pressed by a spring 8 installed in a step part 4 of the base cylinder (a), thus a pressing surface 11 of the ring body (b) presses an end face of the fitted body (c), so that such a possibility that this fitted body (c) might be loosened by vibration during work machining operation is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a collet chuck fitting device that allows very easy mounting of a collet chuck.

[Conventional technology]

Conventionally, the collet chuck 51 is installed by inserting the collet chuck 51 into the sleeve inner hole 53 of the base cylinder body 54 into which the sleeve 52 is inserted, and screwing the fitted cap 55 onto the base cylinder body 54. What is done is common.

However, the conventional method of screwing the fitted cap 55 of the base cylinder 54 has the disadvantage that the fitted cap 55 must be screwed in and unscrewed when the fitted cap 55 is attached or removed, which is troublesome. It has been confirmed that there is a drawback in that when the cap 55 is screwed onto the base cylinder body 54 and a workpiece is processed, the fitted cap 55 loosens due to vibration.

[Problem to be solved by the invention]

The present invention solves these drawbacks, and the technical problem is to provide a collet chuck fitting device that is very easy to install and prevents the fitting cap from loosening during workpiece machining operations. be.

[Means to solve the problem]

The present invention will now be described in detail with reference to the accompanying drawings.

A collet chuck fitting cylinder 5 is provided protruding from the machine body 1 and has a large diameter part 2 and a small diameter part 3 connected to each other via a stepped part 4. A base cylinder a comprising a plurality of locking protrusions 6 protruding outward, a locking window 7 formed on the outer periphery of the large diameter portion 2, and a plurality of springs 8 provided on the stepped portion 4, and the collet. A locking pin 9 is fitted into the large diameter portion 2 of the chuck fitting cylinder 5 and is inserted into the locking window 7 on the inner peripheral surface.
A plurality of spring receiving surfaces 10 are formed in a protruding manner, a pressing surface 11 is formed on the upper end surface for pressing a fitted object C described later, and a plurality of protrusions 12 are arranged on the inner peripheral edge of this pressing surface 11 at engagement intervals. The intermediate ring body erected with the collet chuck fitting tube 5
A plurality of locking receiving protrusions 13 that engage with locking protrusions 6 protruding from the outer periphery of the small diameter portion 3 are arranged on the inner peripheral surface at engagement intervals. This relates to a collet chuck fitting device comprising a body C to be fitted and a body C protruding inwardly.

[For production]

Fit the intermediate ring body into the large diameter portion 2 of the collet chuck fitting cylinder 5 of the base cylinder a, fit the locking pin 9 into the locking window 7,
Insert the collet chuck 15 into the sleeve inner hole 14 inserted into the collet chuck fitting tube 5, and place the object C to be fitted into the small diameter portion 3 of the collet chuck fitting tube 5 with the locking protrusion 6 and the locking receptacle. The collet chuck 15 is fitted in such a manner that it engages with the strip 13, and the workpiece 16 is held by the collet chuck 15.

The spring 8 provided on the stepped portion 4 presses the spring receiving surface 10 of the intermediate ring body, and the pressing surface 11 of the intermediate ring body presses the spring receiving surface 10 of the intermediate ring body.
Since the end face of the ring member C is pressed against the end face of the member C, it is prevented from loosening due to vibrations during workpiece machining work, and the protruding piece 12 of the intermediate ring body is pressed between the locking protrusions 13 of the member C to be fitted. When inserted, the intermediate ring body and the fitted body C are in a rotation-prevented state.

〔Example〕

The drawings illustrate one embodiment of the present invention, the structure of which is as follows.

The base cylinder a forms a collet chuck fitting cylinder 5 by connecting a cylindrical large diameter part 2 and a cylindrical small diameter part 3 via a stepped part 4, and forms a collet chuck fitting cylinder 5. Horizontal portions 7 having a width approximately equal to the tip diameter of the locking pin 9 are provided at four locations on the outer peripheral surface of the large diameter portion 2 of 5.
An L-shaped locking window 7 consisting of a vertical part 7'' and a vertical part 7'' is bored,
Four locking protrusions 6 are protruded from the outer periphery of the small diameter portion 3 at engagement intervals, and the spring 8 is inserted into the spring hole 17 drilled at the dent of the stepped portion 4 with the tip thereof protruding. It has a similar structure.

The side end surface 6' of the locking protrusion 6 is formed into a tapered surface to ensure engagement with the fitted object C.

Reference numeral 18 in the figure is a fixing bolt hole.

The intermediate ring body is a ring body in which the flange 20 is integrally installed, and a pin insertion hole 19 into which the locking pin 9 is inserted is bored at the outer periphery, and the outer end surface of the flange 20 is formed on a pressing surface 11, and the inner end surface is formed on a spring receiving surface 10 against which the spring 8 is pressed.

An arc-long projecting piece 12 is provided at the inner peripheral edge of the pressing surface 11 to fit between the locking projecting strips 6 provided on the small diameter portion 3.

The fitted body C is a ring body, and has four locking projections 13 at the lower part of its inner peripheral surface that engage with the locking projections 6 of the base cylinder a.
is provided to protrude inwardly, and the upper end surface 13° of the lock receiving protrusion 13 is formed into a tapered surface that matches the tapered surface of the side end surface 6'' of the lock receiving protrusion 6.

Reference numerals 21 and 22 in the figure indicate that when the sleeve 24 is slid to the left in FIG. 3 to release the workpiece 16 from the collet chuck 15, the collet chuck 15 is integrated with the sleeve 24 and moves to the left in FIG. A slide prevention ring and a slide prevention pin that prevent sliding, and reference numeral 23 is a slide restriction stepped portion of the sleeve 24.

Since the embodiment has the above configuration, it exhibits the following effects.

The collet chuck 15 is attached to the collet chuck fitting tube 5 of the base cylinder a, and the intermediate ring body is fitted to the large diameter portion 2.
The locking pin 9 is inserted into the pin insertion hole 19, and the tip of the locking pin 9 is fitted into the horizontal portion 7° of the locking window 7.

In this state, since the width of the horizontal portion 7' is approximately equal to the diameter of the tip of the locking pin 9, the spring action of the spring 8 does not work.

In this state, the object C is fitted with the locking protrusion 13 positioned between the locking projections 6, and the object C is rotated to engage the locking projection 6. When the receiving protrusion 13 is brought into engagement,
Due to the tapered action of the locking protrusion 6 and the locking receiving protrusion 13,
The fitted body C is fixed to the collet chuck fitting cylinder 5.

Next, when the intermediate ring body is rotated so that the protruding piece 12 is positioned between the locking protrusions 6, the tip of the locking pin 9 moves to the vertical part of the locking window 7 at 7°. The spring receiving surface lO of the intermediate ring body is pressed by the spring action of the spring 8, and the pressing surface 11 of the intermediate ring body presses the end surface of the object C to be fitted, and the projecting piece 12 of the intermediate ring body is pressed. It is fitted between the locking projections 13 of the fitting body C, and the fitting body C is prevented from rotating.

Therefore, the embodiment provides a collet chuck fitting device in which the collet chuck 15 can be attached very easily with one touch, and the object C to be fitted does not loosen even during workpiece machining operations due to the spring action of the springs 8.

〔Effect of the invention〕

Since the present invention is configured as described above, the mounting of the collet chuck is very simple compared to the conventional example in which the object to be fitted is screwed on, and the object to be fitted is fitted into the base cylinder during workpiece machining work. This provides a collet chuck fitting device that does not come loose.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the present invention, FIG. 2 is a front view of the present invention, FIG. 3 is a sectional view taken along line A--A of the present invention, and FIG. 4 is an exploded perspective view of a conventional example. a... Base cylinder body, b... Intermediate ring body, C... Fitted body, 1 body, 2... Large diameter part, 3... Small diameter part, 4...
Stepped portion, 5. Collet chuck fitting tube, 6. Locking protrusion, 7. Locking window, 8. Spring, 9. Locking pin.
DESCRIPTION OF SYMBOLS 10... Spring receiving surface, 11... Pressing surface, 12... Protrusion piece, 13... Locking receiving protrusion. 7α side z#J August 7, 1990, 1990 Patent Application No. 158216 Name of the invention Relationship with the person who corrects the collet chuck fitting device case

Claims (1)

[Claims] A plurality of locking protrusions are provided at engagement intervals on the outer periphery of the small diameter part of the collet chuck fitting tube, which is protruded from the machine body and has a large diameter part and a small diameter part connected to each other via a stepped part. protrudes outward,
A base cylinder body having a locking window formed on the outer periphery of the large-diameter portion and a plurality of springs provided on the stepped portion; A locking pin that locks and penetrates into the locking window is provided protrudingly on the surface, and a plurality of spring receiving surfaces are formed, a pressing surface for pressing the object to be fitted as described later is formed on the upper end surface, and the inner surface of this pressing surface is formed. an intermediate ring body having a plurality of protrusions erected at engagement intervals on its periphery; and an intermediate ring body that is fitted into the small diameter portion of the collet chuck fitting tube, and has an outer periphery of the small diameter portion on the inner peripheral surface. A collet chuck fitting device comprising a locking protrusion protruding from the collet chuck and a fitting body having a plurality of locking receiving protrusions protruding inwardly at engagement intervals.