JPH0588812U - Chuck device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention aims to provide a chuck device capable of quickly and accurately pulling out a tool. In a chuck device that is provided on a spindle 1 of a machine body and holds a tool 2, an advance / retreat body 5 that moves forward / backward by an appropriate means 4 inside a base cylinder body 3 attached to the spindle 1.
And a pressing portion 8 for pressing the base end of the tool 2 inserted into the base cylinder 3 via a tool holding portion 7 provided at the front end of the base cylinder 3 near the front end of the advancing and retracting body 5. The pressing portion 8 is formed, and the tip end surface of the pressing portion 8 is formed into a flat surface.
The neck is freely vibrated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a chuck device capable of finely adjusting a tool forward and backward.

[0002]

[Problems to be solved by conventional techniques and devices]

 Conventionally, a chuck device provided with a collet at the tip has a collet pressure when a tool (for example, a drill) is pressed by the collet to perform cutting work, etc. After releasing the tightening, the worker manually pulls out the tool.

Since this drawer is pulled out manually by an operator, it is difficult for an operator to be able to accurately draw out a desired amount, except for an expert.

The present invention has a technical object to provide a chuck device that can easily and accurately pull out a small amount of a tool.

[0005]

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

In a chuck device that is provided on a spindle 1 of a machine body and holds a tool 2, an advancing / retreating body 5 that is advanced / retreated by an appropriate means 4 is provided inside a base cylindrical body 3 attached to the spindle 1 and the advancing / retreating body 5 A pressing portion 8 for pressing the base end of the tool 2 inserted in the base cylinder 3 via a tool holding portion 7 provided at the front end of the base cylinder 3 is formed near the front end of the base cylinder 3. The present invention relates to a chuck device characterized in that the tip end surface of 8 is formed into a flat surface and the pressing portion 8 is configured to be capable of vibrating the neck.

[0007]

[Action]

 When the advancing / retreating body 5 is moved back and forth by an appropriate means 4, the pressing portion 8 of the advancing / retreating body 5 presses the base end of the tool 2, so that the tool 2 is pushed. Even when the base end surface of the tool 2 is not perpendicular to the axis of the tool 2, the pressing portion 8 is configured to vibrate the neck, so that the base end surface of the tool 2 has a flat tip end. It will be pushed with the entire surface in contact.

[0008]

【Example】

 The drawings show an embodiment of the present invention. FIGS. 1 and 2 are a first embodiment, FIGS. 3 and 4 are a second embodiment, and FIGS. 5, 6 and 7 are a third embodiment.

The first embodiment will be described.

Reference numeral 1 denotes a spindle of a machine body, to which a base cylinder 3 having a female screw portion 10 formed near the base end of the inner peripheral surface is fixed. A cylindrical advancing / retreating body 5 is attached to the inner hole of the base cylindrical body 3. A male screw portion 11 that is screwed with the female screw portion 10 is formed near the outer peripheral surface proximal end of the advancing and retracting body 5, and pinion teeth 9 are provided near the outer peripheral surface distal end.

It should be noted that the female screw portion 10 and the male screw portion 11 may be formed as a multiple thread.

Further, a pressing body 6 is screwed inside the advancing / retreating body 5, and a spherical body 18 having a flat surface formed by notching the tip at the tip of the pressing body 6 is freely pivotable by vibrating the neck. And the pressing portion 8 is configured.

Inside the large-diameter portion 12 near the tip of the base tubular body 3, a tubular rack body 14 having rack teeth that mesh with the pinion teeth 9 is provided. The rack body 14 is housed in a through hole 13 formed in the large diameter portion 12. Two bolt rods 15a and 15b are eccentrically attached to the rack body 14 from both ends in a threaded state.

The bolt rods 15a and 15b are arranged in the rack body 14 in an eccentric state in order to prevent the rack body 14 from rotating.

A known collet 16 (tool holding portion 7) is attached to the tip of the base cylinder 3.

Reference numeral 17 is a wrench insertion hole for advancing and retracting the pressing body 6 at the time of mounting, and 19 is a guide body.

Since the first embodiment has the above-mentioned configuration, when one bolt rod 15a is loosened and the other bolt rod 15b is tightened, the rack body 14 moves to the left side in FIG. Since the turning force acts, the advancing / retreating body 5 rotates and moves forward.

Since the spherical body 18 is swingably fitted to the tip of the pressing body 6, even if the base end surface of the tool 2 is not perpendicular to the axis of the tool 2, The flat end surface of the spherical body 18 is in full contact with the base end surface of the tool 2, so that the tool 2 can be pushed accurately, and the spherical body 18 is rotatable, so that the pressing body 6 can be smoothly rotated. In addition, the rotation of the pressing body 6 is not transmitted to the tool 2, so that the tool 2 is reliably pressed and wear between the flat end surface of the spherical body 18 and the base end surface of the tool 2 is reduced. Will be done. Therefore, when it is desired to pull out the tool 2 that has been compressed by the collet 16 a little, if the compression of the collet 16 is released and the bolt rods 15a and 15b are rotated as described above, the spherical body 18 Since the flat end surface of the tool presses the base end surface of the tool 2, the tool 2 is pushed forward without rotating.

Therefore, if the amount of rotation of the bolt rods 15a and 15b and the amount of advance / retreat of the advancing / retreating body 5 (pressing body 6) are set in advance as compared with the conventional example in which the operator pulls out the tool 2 by hand. Thus, the tool 2 can be pulled out quickly and accurately.

When the tool 2 is mounted, a predetermined wrench is fitted in the wrench insertion hole 17 and the pressing body 6 is set at an appropriate position, and the base end surface of the tool 2 is the tip of the spherical body 18. Push in until it touches a flat surface. At this time, if the base end surface of the tool 2 is not at right angles to the axial center line of the tool 2, the spherical body 18 oscillates according to the inclination.

A second embodiment will be described.

In the second embodiment, the rack and pinion system as the appropriate means 4 of the first embodiment is replaced with a bevel gear system, and the rest is the same as in the first embodiment.

Reference numeral 30 denotes a fitted cylinder that is fitted into the advancing / retreating body 5 via the key 33, and a bevel gear portion 31 is formed at the tip of the fitted cylinder 30. Reference numeral 32 is a stopper. The pressing body 6 of the second embodiment is formed of a divided body to prevent the pressing body 6 from loosening.

A third embodiment will be described.

In the third embodiment, the rack and pinion system as the appropriate means 4 of the first embodiment is replaced with the worm / worm wheel system, and the rest is the same as in the first embodiment.

Reference numeral 40 is a worm, 41 is a worm wheel, 42 is an advance / retreat stopper ball for the worm 40, 43 is a cover ring, and 44 is a stopper. The pressing body 6 of the third embodiment is also formed of a divided body.

[0027]

[Effect of the device]

 Since the present invention is configured as described above, it is an excellent chuck device that can quickly and accurately pull out a mounted tool.

[Brief description of drawings]

FIG. 1 is a sectional view of the present embodiment.

FIG. 2 is an enlarged cross-sectional view of an AA instruction line in FIG.

FIG. 3 is a sectional view of another example.

FIG. 4 is a sectional view taken along the line AA in FIG.

FIG. 5 is a sectional view of another example.

FIG. 6 is a side view of the above.

FIG. 7 is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

 1 Spindle 2 Tool 3 Base Cylindrical Body 4 Appropriate Means 5 Advancing / Retracting Body 7 Tool Holding Part 8 Pressing Part

Claims (1)

[Scope of utility model registration request] 1. A chuck device for holding a tool provided on a spindle of a machine body, wherein an advancing / retreating body for advancing / retreating by an appropriate means is provided inside a base cylinder attached to the spindle,
A pressing portion for pressing the base end of the tool inserted into the base cylinder through a tool holding portion provided at the front end of the base cylinder is formed near the front end of the advancing / retreating body, and the front end surface of the press portion is formed. A chuck device, which is formed on a flat surface, and is configured such that the pressing portion is capable of vibrating the neck.