JP2001162486A - Foreign matter adhesion prevention device for tool installation part of tool post in machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foreign matter adhesion prevention device for a tool installation part of a tool post using an existing structure for automatically changing between a turning tool and a rotary tool, and capable of detachably installing a cover by automatic control by use of a dummy holder before use of the rotary tool. SOLUTION: The cover body 6 is detachably provided in the holder 7 capable of being detachably fitted in the tool installation part 4 as well as a taper shank part 9 of the turning tool or the rotary tool, while the tool installation part 4 is provided with a cover body fixing device 8 for fixing the cover body 6. The cover body 6 is fixed by the cover body fixing device 8 with the holder 7 fitted in the tool installation part 4, and the holder 7 is removed. Thereby, the cover body 6 is left and installed on a tool abutment reference surface 5 of the tool installation part 4. When the rotary tool is installed in the tool installation part 4, the reference surface 5 does not be exposed. By releasing the cover body fixing device 8 to remove the holder 7, the cover body 6 is removed from the tool installation part 4 together with the holder 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing foreign matter from adhering to a tool mounting portion of a tool post in a machine tool for performing a cutting process.

[0002]

2. Description of the Related Art In a tool rest (live spindle) on which both a turning tool and a rotary tool can be mounted, a reference surface which abuts when the turning tool is mounted on a tool mounting portion is tool mounted. However, when the rotating tool is mounted, a part of the reference surface is exposed.

That is, both the turning tool and the rotating tool are attached to the reference surface by engaging the taper shank portion with the chuck engaging portion of the tool mounting portion. Since there is a possibility that a defect may occur, a turning tool has a large-diameter abutting reference surface (having two surfaces, a slope surface and a flat surface) that is abutted when clamping and fixing, so that no load is applied to the bearing. And

[0004] Therefore, when a rotating tool is mounted,
In the case of a turning tool, the outer peripheral portion of the reference surface serving as the abutting surface is exposed.

Therefore, foreign matter such as cutting powder adheres to the exposed reference surface during the use of the rotary tool, which may cause various problems such as poor machining accuracy when using the turning tool.
Although there is provided a means for removing the adhered foreign matter by air or the like, it is difficult to completely remove the foreign matter once adhered due to its tackiness.

The present invention finds such a problem in a conventional live spindle and solves the problem. The present invention utilizes an existing structure for automatically changing between a turning tool and a rotary tool, and uses a mounting tool for attaching and detaching a cover. The idea is to use a dummy holder that can be handled in the same way as above, and this dummy holder makes it possible to attach the cover detachably by automatic control before using the rotating tool. It is an object of the present invention to provide a foreign matter adhesion preventing device.

[0007]

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

The turning tool 1 and the rotary tool 2 can be replaced and mounted on the tool mounting portion 4 of the tool rest 3 which covers the tool abutment reference surface 5 exposed when the rotary tool 2 of the tool mounting portion 4 is mounted. A foreign matter adhesion preventing device to which a ring-shaped cover body 6 is detachably attached, wherein the tool mounting portion 4 is provided similarly to the tapered shank portion 9 of the turning tool 1 or the rotary tool 2.
The cover body 6 is detachably provided on a holder 7 configured to be detachably engageable with the cover 7, and a cover body fixing device 8 for fixing the cover body 6 is provided on the tool mounting portion 4. The cover body 6 is fixed by the cover body fixing device 8 in a state where the cover body 6 is
, The cover body 6 is left behind on the reference surface 5 of the tool mounting portion 4 and mounted.
The cover body fixing device 8 is released in a state where the tool abutment reference surface 5 is not exposed even if the rotary tool 2 is mounted on the
The cover body 6 is configured to be removed together with the holder 7 from the tool mounting section 4 by removing the tool body. This relates to an apparatus for preventing foreign matter from adhering to a tool mounting section of a tool rest in a machine tool.

Further, the holder 7 is provided with the turning tool 1.
Alternatively, similarly to the rotary tool 2, the chuck operation and the movement operation can be disengaged from the tool mounting portion 4 by the tool rest 3 or the moving arm portion or the magazine plate portion for tool replacement in which the NC operation is controlled. 2. An apparatus for preventing foreign matter from adhering to a tool mounting portion of a tool post in a machine tool according to claim 1, wherein the device mounting portion can be attached to a storage portion for storage when not in use with the portion. It is related to.

When the cover body 6 is fixed to the tool mounting portion 4 by the cover body fixing device 8, the engagement between the holder 7 and the cover body 6 is released, and the cover body fixing device 8 In a state where the fixing of the cover body 6 is released, the detachable locking mechanism 11 interlocked with the cover body fixing device 8 in which the holder 7 and the cover body 6 are locked.
The present invention relates to a device for preventing foreign matter from adhering to a tool mounting portion of a tool rest in a machine tool according to any one of claims 1 and 2, wherein the device is provided on a holder (7) and a cover body (6).

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

When the turning tool 1 is mounted on the tool mounting portion 4, the tool abutment reference surface 5 is not exposed, but when the rotary tool 2 is mounted, the reference surface 5 (two inclined surfaces and a flat surface) is provided.
Before the rotary tool 2 is mounted, a cover body 6 that covers the exposed reference surface 5 is attached before the turning tool 2 is mounted. The cover body 6 is removed.

Specifically, before mounting the rotary tool 2,
The holder 7 with the cover 6 functioning as the taper shank 9 of the turning tool 1 or the rotary tool 2 is engaged with the tool mounting portion 4, and the cover 6 is fixed to the reference surface of the tool mounting portion 4 by the cover body fixing device 8. 5 Fix and attach.

The cover 6 is fixed by the cover fixing device 8.
When the holder 7 is removed from the tool mounting portion 4 in a state where the cover body 6 is fixed, the cover body 6 is left in a fixed state and the mounting of the cover body 6 is completed.

Therefore, even if the rotary tool 2 is mounted thereafter, the reference surface 5 is covered with the cover body 6 and is not exposed, so that foreign matter such as cutting powder does not adhere to the reference surface 5.

When the cover 6 is removed,
The holder 7 to which the cover body 6 is not attached is engaged with the tool mounting portion 4 again to release the fixing of the cover body 6 by the cover body fixing device 8, and the holder 7 is removed from the tool mounting portion 4. The cover body 6 is removed together with 7 to complete the removal of the cover body 6.

Therefore, the holder 7 configured to function as the taper shank portion 9 is engaged with and disengaged from the tool mounting portion 4, and the cover body 6 can be attached and detached by controlling the operation and release of the cover body fixing device 8.

Further, for example, when the cover body 6 is fixed to the tool mounting portion 4 by the cover body fixing device 8, the engagement between the holder 7 and the cover body 6 is released, and the cover body 6 is fixed by the cover body fixing device 8. Is released, the holder 7 and the cover body 6 are provided with an attachment / detachment locking mechanism 11 interlocked with the cover body fixing device in which the holder 7 and the cover body 6 are locked. 6 can be automatically controlled, and the holder 7 with the cover 6 can be stored and stored in the common storage unit 10 (replacement magazine) in the same manner as the turning tool 1 and the rotary tool 2. Unmanned operation is possible using the NC machine.

That is, the operation of exchanging and mounting the turning tool 1 and the rotating tool 2 and the operation of taking out and storing from the storage unit 10 (the chucking operation of the tool rest 3, the moving arm unit for tool replacement and the magazine plate unit) The cover body 6 can be attached and detached by the movement operation) and the fixing / releasing operation of the cover body fixing device, so that the NC control can be easily realized, and the epoch-making foreign matter adhesion preventing device capable of unmanned operation without lowering the operation efficiency. Can be provided.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

Like the taper shank 9 of the turning tool 1 and the rotary tool 2, the taper shank is shaped so that the chuck can be removably engaged with the chuck engaging portion 12 of the tool mounting portion 4. A ring-shaped cover body 6 is detachably provided on the outer periphery of the dummy holder 7 provided with the arm chuck locking portion 13 which can be moved by chucking with the moving arm portion, and this is provided on the reference surface 5 side of the tool mounting portion 4. Cover body 6
Is provided with a side clamp type cover body fixing device 8 for fixing the cover member.

That is, for example, the chuck operation and the movement operation are N
When the holder 7 is chucked and engaged with the chuck engaging portion 12 of the tool mounting portion 4 by chucking and moving with a moving arm portion for tool exchange controlled by a tool, a ring-shaped cover body provided on the outer periphery of the holder 7 6 abuts and covers the reference surface 5 exposed when the rotary tool 2 is mounted. The cover body 6 is clamped and fixed by the cover body fixing device 8 in a state where the cover body 6 is abutted, and the holder 7 is removed again by the moving arm part, and the cover body 6 is left on the reference surface 5 of the tool mounting part 4. And the mounting is completed. Therefore, even if the rotary tool 2 is mounted on the tool mounting portion 4, the tool abutment reference surface 5 is not exposed.

Further, the holder 7 without the cover 6 is taken out of the storage section 10 (replacement magazine) and is again engaged with the chuck engaging section 12 of the tool mounting section 4 to release the cover body fixing device 8. Then, the clamp of the cover body 6 is released, and the holder 7 is removed again, so that the cover body 6 is detached from the tool mounting portion 4 together with the holder 7.

As described above, the holder 7 holds the turning tool 1
Or, similarly to the rotary tool 2, for example, when the chuck operation and the movement operation can be disengaged from the tool mounting portion 4 by a tool changing moving arm portion that is NC-controlled and are not engaged with the tool mounting portion 4 when not in use. It is configured such that it can be stored in the storage storage unit 10.

In this embodiment, the cover fixing device 8 is used.
In a state where the cover body 6 is fixed to the tool mounting portion 4, the lock between the holder 7 and the cover body 6 is released, and in a state where the cover body 6 is unlocked by the cover body fixing device 8,
The holder 7 and the cover 6 are provided with an attachment / detachment locking mechanism 11 interlocked with the cover body fixing device 8 in which the holder 7 and the cover 6 are locked. Therefore, the attachment / detachment of the cover 6 can be automatically controlled by NC control, and the holder 7 with the cover 6 is stored and stored in the common storage unit 10 (replacement magazine) like the turning tool 1 and the rotary tool 2. Therefore, unmanned operation can be performed using an existing NC machine.

That is, the operation of exchanging and mounting the turning tool 1 and the rotary tool 2 and the operation of taking out and storing from the storage unit 10 (for example, the tool rest 3 itself, the moving arm unit for tool replacement, and the chuck of the magazine plate unit) Operation and moving operation) and the fixing / releasing operation of the cover body fixing device 8, the cover body 6 can be attached / detached, so that the attachment / detachment of the cover body 6 can be easily automatically controlled by an existing NC machine, and the operation efficiency can be improved. Thus, it is possible to provide an epoch-making foreign matter adhesion preventing device that can be operated unattended without lowering the temperature.

The cover fixing device 8 of this embodiment is
The cover body 6 on the reference surface 5 is pressed and clamped toward the reference surface 5 to be fixed. The clamp portion 8A is inwardly provided on the side of the reference surface 5 of the tool mounting portion 4 via a link mechanism. The cover body 6 is configured to be rotatable to move forward and backward, and to protrude inward from a state retracted to the side, and further to rotate toward the reference surface 5 so that the cover body 6 is pressed against the reference surface 5 and fixed by clamping.

The attachment / detachment locking mechanism 11 of the present embodiment projects the locking projection 11B, which is urged by the embedded spring 11A from the outer peripheral portion of the holder 7, so as to be able to advance and retreat in the retraction direction.
The engaging protrusion 11B is configured to be engaged with the engaging recess 11C of the cover body 6, and the engaging protrusion 11B protrudes from the outer surface of the cover body 6 pressed by the clamp portion 8 of the cover body fixing device 8. The deactivation protrusion 11D is provided in a branched state from the locking protrusion 11B.

Therefore, as shown in FIG. 2, before being clamped and fixed to the clamp portion 8A of the cover fixing device 8, the holder 7 is locked by the locking projection 11B and the engaging concave portion 11C.
The cover body 6 is configured to be locked and fixed to the
When the clamp portion 8A of the cover body fixing device 8 of the cover body 6 pivotally protrudes and presses the engagement / disengagement protrusion 11D,
As shown in FIG. 3, the engagement / disengagement action projection 11D is pushed back against the embedded spring 11A, and the engagement projection 11B is pushed back to release the engagement between the engagement projection 11B and the engagement recess 11C.
The cover unit 6 is clamped and fixed by the clamp unit 8.

Accordingly, when the cover body 6 is clamped and fixed by the clamp portion 8A of the cover body fixing device 8, the engagement between the cover body 6 and the holder 7 is automatically released, and when the holder 7 is removed from the tool mounting section 4, The cover 6 is left behind.

Conversely, when the clamp fixing of the cover body 6 by the cover body fixing device 8 is released, the clamp portion 8A of the cover body fixing device 8 is retracted, so that the embedded spring 11A is retracted.
As a result, the engagement / disengagement projection 11D and the engagement projection 11B project again, the engagement projection 11B is engaged with the engagement recess 11C, and the engagement / disengagement projection 11D presses the cover body 6. That is, the cover 6 and the holder 7 are automatically locked, and when the holder 7 is removed, the holder 7 and the cover 6 are removed together from the tool mounting portion 4.

The tip of the locking projection 11B is formed in a tapered surface, and when the holder 7 is engaged with the tool mounting portion 4 to remove the cover body 6, the locking projection 11B in the projected state. Is retracted by the inner surface of the cover body 6, and the engagement recess 11
C, and the engagement / disengagement projecting portion 11D is also moved down by the inner surface of the clamp portion 8A, and the clamp portion 8A
When the clamp 8A is retracted, the locking projection 11B is automatically projected by the embedded spring 11A and automatically locked in the engagement recess 11C, and the engagement / disengagement projection 11D is also projected. The outer surface of the body 6 is pressed down, and the release of the cover body fixing device 8 allows the holder 7 to be pressed.
When the cover is removed, the cover body 6 is automatically locked and integrated with the holder 7 and removed together.

[0033]

Since the present invention is constructed as described above, using the structure for replacing a turning tool and a rotary tool, and mounting the turning tool or the rotary tool on the tool mounting portion, the holder is similarly attached to the tool mounting portion. The cover body is attached to the reference surface of the tool mounting part by engaging the
This is an epoch-making device that can be detached and can automatically control the attachment and detachment of the cover body in the same manner as the exchange of the turning tool and the rotary tool.

According to the second aspect of the present invention, similarly to the turning tool or the rotary tool, the cover body can be attached / removed by the NC machine under the existing NC control, and the holder is the same as the turning tool or the rotary tool. Can be stored in a storage compartment (replacement magazine) for efficient management, automatic control by an NC machine is possible, and unmanned operation becomes possible. This is a device for preventing foreign matter from adhering.

In the third aspect of the present invention, when the cover body is fixed to the tool mounting portion by the cover body fixing device, the engagement between the holder and the cover body is released, and the cover body is fixed by the cover body fixing device. When the fixing is released, the holder and the cover are provided with an attachment / detachment locking mechanism that works in conjunction with the cover fixing device that locks the holder and the cover. By controlling the fixing device, it can be automatically engaged and disengaged in conjunction with this, and the control of the cover fixing device and the movement control of the holder can easily realize the automatic control of the mounting of the cover, which is even better. It is a device for preventing foreign matter from adhering to a tool mounting portion of a tool post in an innovative machine tool.

That is, according to the present invention, the cover can be efficiently attached, the cost is not increased, and automation by the NC control can be easily realized. Therefore, it is possible to surely prevent foreign matter from adhering to the reference surface by the turning tool. Thus, it is possible to provide a device for preventing foreign matter from adhering to a tool mounting portion of a tool rest in an innovative machine tool capable of improving machining accuracy by a turning tool.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state in which a cover body of this embodiment is mounted and a rotary tool is mounted.

FIG. 2 is an explanatory diagram showing a state before the cover body of the present embodiment is mounted using a holder and is clamped and fixed by a cover body fixing device 8;

FIG. 3 is an explanatory diagram showing a state before the cover body of the present embodiment is clamped and fixed by the cover body fixing device.

FIG. 4 is an explanatory view showing a state in which the cover body of the present embodiment is clamped and fixed by the cover body fixing device, the holder is removed, and the mounting of the cover body is completed.

FIG. 5 is an explanatory back view of the tool rest of the present embodiment.

FIG. 6 is an explanatory view showing a state where the cover body of the present embodiment is detached and a turning tool is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turning tool 2 Rotary tool 3 Turret 4 Tool mounting part 5 Reference surface 6 Cover body 7 Holder 8 Cover body fixing device 9 Taper shank part 10 Storage part 11 Removable locking mechanism

Continuing from the front page (72) Inventor Hiroshi Wakatsuki 2-1 Kitazono-cho, Nagaoka-shi, Niigata Om Co., Ltd. Nagaoka factory (72) Inventor Ryuji Nishiyama 2-1 Kitazono-cho, Nagaoka-shi, Niigata -F-term in M Nagasaki Factory (reference) 3C011 DD00 3C032 AA15

Claims (3)

[Claims] 1. A ring-shaped cover body for covering a tool abutting reference surface exposed when the rotary tool of the tool mounting portion is mounted on a tool mounting portion of a tool rest on which a turning tool and a rotary tool can be replaced and mounted. A detachable attachment device, wherein the cover body is detachably attached to a holder configured to be detachably engageable with the tool mounting portion similarly to the tapered shank portion of the turning tool or the rotary tool. Provided,
A cover body fixing device for fixing the cover body to the tool mounting portion is provided, and the cover body is fixed by the cover body fixing device in a state where the holder is engaged with the tool mounting portion,
By removing the holder, the cover body is left and mounted on the reference surface of the tool mounting portion, and even if the rotary tool is mounted on the tool mounting portion, the tool abutment reference surface is not exposed, and the holder is removed. A cutter in a machine tool, wherein the cover body is detached together with the holder from the tool mounting part by releasing the cover body fixing device and removing the holder while being engaged with the tool mounting part. A device for preventing foreign matter from adhering to the tool mounting part of the table. 2. The holder, similar to the turning tool or the rotary tool, is provided on a tool mount by a tool rest or a tool changing moving arm or a magazine plate for NC control of chuck operation and moving operation. 2. A tool for a tool post in a machine tool according to claim 1, wherein the tool can be disengaged and disengaged, and can be attached to a storage section for storage when not in use that is not engaged with the tool mounting section. A device for preventing foreign matter from adhering to the mounting part. 3. When the cover body is fixed to the tool mounting portion by the cover body fixing device, the lock between the holder and the cover body is released, and the fixing of the cover body is released by the cover body fixing device. The holder and the cover body are provided with an attachment / detachment locking mechanism in conjunction with a cover body fixing device in which the holder and the cover body are in a locked state in the held state. 2. A device for preventing foreign matter from adhering to a tool mounting portion of a tool post in a machine tool according to claim 1.