KR20110134762A - Apparatus for clamping of tools - Google Patents

Apparatus for clamping of tools Download PDF

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Publication number
KR20110134762A
KR20110134762A KR1020100054523A KR20100054523A KR20110134762A KR 20110134762 A KR20110134762 A KR 20110134762A KR 1020100054523 A KR1020100054523 A KR 1020100054523A KR 20100054523 A KR20100054523 A KR 20100054523A KR 20110134762 A KR20110134762 A KR 20110134762A
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KR
South Korea
Prior art keywords
protrusion
shaft
clamp
pin
tool
Prior art date
Application number
KR1020100054523A
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Korean (ko)
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KR101131456B1 (en
Inventor
박성원
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박성원
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Priority to KR1020100054523A priority Critical patent/KR101131456B1/en
Publication of KR20110134762A publication Critical patent/KR20110134762A/en
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Publication of KR101131456B1 publication Critical patent/KR101131456B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/24—Tool holders for a plurality of cutting tools, e.g. turrets
    • B23B29/244—Toolposts, i.e. clamping quick-change toolholders, without description of the angular positioning device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/03—Clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
    • B23B2270/08—Clamping mechanisms; Provisions for clamping

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The tool clamping device as described above is rotated by a stator having a first through portion; and a bearing interposed in the first through portion of the stator, and a second through portion is formed, and the first and second expansion grooves are formed on the inner wall of the second through portion. An additionally formed rotor; It is provided at the tip of the second through part of the rotor, and a fixed protrusion for clamping the tool is formed at the front end, a locking protrusion is formed at the rear end, and a locking protrusion is formed at the second extension groove, a coupling groove is formed at the locking protrusion, and a sliding surface at the locking protrusion. A clamp consisting of a plurality of clamp pins formed therein; A pin guide having a first spring between the first spring support and the housing coupled to the coupling groove of the clamp pin, the coupling protrusion protruding a plurality of front surfaces of the housing; The housing is provided in the pin guide, the pressing protrusion is formed on the front surface of the housing, the inclined surface of the pressing protrusion is in close contact with the sliding surface of the clamp pin, the second spring support provided on the front of the first spring support and the housing A pressing member having two springs; And a moving shaft provided in the second through portion of the rotor, the moving shaft being penetrated through the clamp and the pressing member to be moved forward and backward by an axial spring, and coupled to the leading end of the moving shaft to form a monolayer. Consists of a shaft consisting of.
Tool clamping device of the present invention can be rotated when the clamp pin is rotated back when there is no fear of damage and damage due to hitting, minimizing the friction surface of the clamp pin to prevent damage to the parts, parts are not damaged long-term use There are possible advantages to this

Figure P1020100054523

Description

Apparatus for clamping of tools}

The present invention relates to a tool clamping device, and more particularly, the clamping protrusion of the clamp pin is pushed into the unlocking protrusion as the locking protrusion moves rearward while the engaging protrusion of the pin guide closely supports each clamp pin. And a clamping device which slides and clamps the tool by pushing the sliding surface of the clamp pin while the pressing protrusion for sliding the support surface against the locking protrusion of the clamp pin is moved backward. .

In general, a tool clamping device is a device that rotates a tool at a high speed by a motor by clamping a predetermined tool requiring a high rotational force for its own work.

As an example, the tool clamping device of the related art is schematically illustrated. As shown in FIGS. 1 and 2, a stator 10 having a first through part 11 penetrated along an axial direction thereof and a stator 10 In the first through portion 11 of 10), a second through portion 21 is disposed to be rotatable axially with a bearing 15 interposed therebetween and penetrated in the axial direction at an inner center thereof. Clamping the rotor 20 in which the 1st and 2nd expansion grooves 22 and 23 are formed, and the tool t which entered the 1st expansion groove part 22 while being radially opened and narrowed in front of this rotor 20, and was narrowed. Clamps 30 composed of a plurality of clamp pins 31 having sliding protrusions 31b, which are provided at the front end with locking protrusions 31a and sliding at the rear end of the second expansion groove 23, respectively, It is arranged in close contact with the sliding protrusion 31b of the clamp pin 31 so that each clamp pin 31 extends radially. It is arranged in the second guide portion 21 of the pin guide 40 and the rotor 20 to elastically guide the contraction movement by the spring 41, the front end portion of the clamp 30 and the pin guide 40 The spring 41 of the pin guide 40 is extended and supported elastically forward and backward by the shaft spring 51 along the axial direction and backward on the tip outer peripheral surface to radially support and propagate the clamp pin 31 radially. It comprises a shaft 50 is provided with an unlocking protrusion 52 to allow the clamp pin 31 to contract.

Referring to the operation example of the tool clamping device of the prior art having such a configuration, first, in the device before the tool t is mounted, the shaft 50 is pushed forward through a separate external hydraulic device and the shaft 50 is pressed. Forward a certain distance forward.

Then, once the shaft spring 51 is pressed by the shaft 50, the unlocking protrusion 52 of the tip of the shaft 50 is pushed out of the clamp 30 to radially to the clamp 30. When the pressure is released, the pin guide 40, which has been subjected to the elastic repulsion of the spring 41, moves forward in response to the release of the pressing force, whereby each clamp pin (which is in surface contact with the pin guide 40) ( 31 are radially contracted in the direction of the center axis while the surface contacts are slid in contact with the front of the pin guide 40 so that the first expansion groove 22 of the rotor 20 is opened.

In such a state, when the tool t is inserted into the first expansion groove 22 of the rotor 20 and the hydraulic pressure applied to the shaft 50 is released, the shaft 50 is the elastic return force of the shaft spring 51. By returning to the rear by the back and at the same time the unlocking protrusion 52 of the tip of the shaft 50 is also retracted backward to enter the interior of the clamp 30 to push each clamp pin 31 in the radial direction.

Then, the locking protrusion 31a of each clamp pin 31 extending radially is caught by the locking projection t1 of the tool t, thereby basically fixing the tool t firmly, and at the same time, the clamp pin 31 ) The sliding protrusion 31b at the rear end is pushed to the second expansion groove 23, and slides the pin guide 40 in contact with the rear end surface of the sliding protrusion 31b to move backwards to press the spring 41. The clamping pin 31 is elastically supported so that the clamping operation for the tool t is finally completed.

In this way, the clamped rotor 20 of the tool t is rotated to perform the rotation operation through the tool t.

On the other hand, in the case of completing the work using the tool (t) to release the tool (t) from the device, as described above, if the shaft 50 is pushed forward by the external hydraulic device as described above the front end of the shaft 50 The unlocking protrusion 52 is released to the outside of the clamp 30 so that the radial pressure is released to the clamp 30. At this time, the pin guide 40 which has been subjected to the elastic repulsion force of the spring 41 is released in response to the release of the pressing force. As a result, each of the clamp pins 31 which are in surface contact with the pin guide 40 is radially contracted in the direction of the central axis while sliding in surface contact with the front guide of the pin guide 40. The locking projection 31a of each clamp pin 31 is separated from the locking projection t1 of the tool t so that the tool t is separated from the apparatus.

However, the tool clamping device as described above may be bent or broken along the longitudinal direction by the locking protrusion hits the clamp pin when the shaft is suddenly retracted through the hydraulic device, and the corresponding surface contacting the pin guide and the clamp pin There is a problem that the contact surface is damaged by the instantaneous rapid friction when the shaft is inclined to each other structure.

The present invention is to solve the above problems, an object of the present invention is to move the pressing protrusion of the pressing member before and after as the unlocking protrusion is moved to the front and rear by pushing the locking protrusion by the sliding surface of the clamp pin. It is to provide a tool clamping device in which each clamp pin is rotated to cause the clamp to radially open or narrow.

In order to achieve the object of the present invention as described above, the tool clamping device according to the present invention, the stator having a first through the central portion in the center; and the rotation by a plurality of bearings interposed on the edge in the first through portion of the stator A rotor arranged to be capable of forming a second through portion at an inner center thereof and having first and second extension grooves formed on an inner wall surface of the distal end of the second through portion; A fixing protrusion is provided at the tip of the second through portion of the rotor and is radially opened and narrowed to clamp a tool that has entered the first expansion groove, and has a rear end engaged with the second expansion groove. A clamp formed of a plurality of clamp pins having an additional portion, a coupling groove having a center portion of the locking protrusion vertically penetrated therein, and having a sliding surface formed on one side of the locking protrusion so as to face the second extension groove; A plurality of coupling protrusions protruding on the front surface of the hollow cylindrical shape are coupled to the coupling grooves of the clamp pins to closely support the clamp pins, and are provided between the first spring support coupled to the rear end and the housing. A pin guide having a first spring for applying an elastic force to the engaging protrusion; A hollow cylindrical housing is provided inside the pin guide, and a pressing protrusion is formed on the front surface of the housing, and an inclined surface formed around the pressing protrusion supports the sliding surface of the clamp pin in close contact with the first spring support. A pressing member provided between the second spring support provided on the front surface and the housing and having a second spring for pressing the pressing protrusion; And a moving shaft provided in the second through portion of the rotor, the leading end of which penetrates through the clamp and the pressing member and is moved forward and backward by the elastic force of the shaft spring along the axial direction. It is characterized in that it comprises a shaft for supporting the pressure projections, the shaft consisting of an unlocking projection that forms a single layer so that the fixing projections of the clamp pin to the front end sliding.

Tool clamping device according to the invention, the pin guide is characterized in that it further comprises a ring-shaped rubber member inside the coupling protrusion provided with the first spring.

Tool clamping device according to the invention, the shaft is provided on the inner side of the unlocking protrusion is characterized in that the moving shaft is fixedly coupled to the shaft fixture that is radially opened or narrowed.

Tool clamping device according to the invention, the shaft is characterized in that the insertion groove for inserting the tool in the center of the unlocking protrusion is formed, the guide bush is further provided on the side around the insertion groove.

Tool clamping device according to the invention, the shaft is formed so as to surround the outer peripheral surface of the moving shaft further comprises a guide member for guiding and supporting the moving shaft is moved along the moving shaft when the moving shaft is moved forward, backward do.

As described above, in the tool clamping device of the present invention, the clamp pin is rotated when the shaft is suddenly retracted, and there is no fear of damage or breakage due to the blow, and the friction surface of the clamp pin can be minimized to prevent damage to each part. And there is an advantage that can be used for a long time because the parts are not damaged.

1 is a schematic view showing a tool clamping device of the prior art.
2 is a schematic view of the main parts showing the operating state of the tool clamping device of the prior art.
3 is a schematic view showing a tool clamping device according to the present invention.
4 is an exploded perspective view of the pin guide and the pressing member of the tool clamping device according to the present invention.
5 is a schematic view of the main parts of the tool clamping device according to the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Figure 3 is a schematic view showing a tool clamping device according to the present invention, Figure 4 is an exploded perspective view of the pin guide and the support member of the tool clamping device, Figure 5 is a schematic view of the main part showing the operating state of the tool clamping device.

The stator 100 forms the first through part 102 at the inner center.

The rotor 200 is rotatably disposed by a plurality of bearings 202 interposed between the edges in the first through portion 102 of the stator, and a second through portion 204 is formed at an inner center thereof. First and second expansion grooves 206 and 208 are formed in the inner end surface of the second through part 204.

The rotor 200 is coupled to the tool t to the first expansion groove 206 and the tool t is simultaneously rotated as the rotor 200 is rotated by the bearing 202.

The rotor 200 has a locking protrusion 304 of the clamp pin 310 is caught by the second expansion groove 208, the clamp pin 310 is a pressing protrusion 502 of the pressing member 500 and the It is rotated by the unlocking protrusion 606 of the shaft 600.

The rotor 200 includes a pin guide 400, a pressing member 500, and a shaft 600 in the second through portion 204.

The clamp 300 is provided at the tip of the second through portion 204 of the rotor 200, and is fixed to the clamping tool (t) entered into the first expansion groove 206 while being radially opened and narrowed ( 302 is formed, the engaging end portion 304 is formed in the rear end is caught by the second expansion groove 208 is rotated, the engaging portion 306 through the center portion of the engaging portion 304 vertically penetrated ) And a plurality of clamp pins 310 having a sliding surface 308 formed on one side of the locking protrusion 304 so as to face the second expansion groove 208.

The clamp 300 is inserted into the coupling protrusion 402 of the pin guide 400 into the coupling groove 306 of each of the clamp pin 310 to closely support the clamp pin 310, the rotor ( The locking protrusion 304 caught by the second expansion groove 208 of the 200 is in close contact with the second expansion groove 208.

The clamp 300 has the engaging protrusion 304 of the clamp pin 310 is caught by the second expansion groove 208 of the rotor 200, the pressing on the sliding surface 308 of the engaging protrusion 304 The pressing protrusion 502 of the member 500 is in close contact with the sliding member and at the same time, the fixing protrusion 302 of the clamp pin 310 is slid to a single layer of the unlocking protrusion 606 so that the clamp pin 310 is formed of the first protrusion. The clamp 300 is opened or narrowed by being rotated based on the locking protrusion 304 caught by the second expansion groove 208.

As the clamp 300 rotates the clamp pin 310, the clamp 300 is narrowed radially so that the fixing protrusions of the clamp pin 310 fixed to the step t1 of the tool t are fixed. When the 302 is released and the clamp 300 opens radially, the step t1 of the tool t is caught by the fixing protrusion 302 of the clamp pin 310 to fix the tool t.

The pin guide 400 has a plurality of coupling protrusions 402 protruding from the front surface of the hollow cylindrical housing 401 is coupled to the coupling groove 306 of each of the clamp pin 310 to the clamp pin 310 And a first spring 406 provided between the first spring support 404 and the housing 401 coupled to the rear end to apply elastic force to the coupling protrusion 402.

The pin guide 400 further includes a ring-shaped collar 408 (collar) inside the housing 401 provided with the first spring 406.

The pin guide 400 is the rotor 200 as the coupling protrusion 402 protruding on the front surface is coupled to the coupling groove 306 of the clamp pin 310 to closely support the clamp pin 310. The locking protrusion 304 of the clamp pin 310 caught by the second expansion groove 208 of the second expansion groove 208 is in close contact with the second expansion groove 208.

The pin guide 400 is coupled to the first spring support 404 to the engaging jaw (401a) formed inside the rear end of the housing 401, the housing 401 and the first spring support 404 The coupling protrusion 402 is pressed by the elastic force of the first spring 406 provided therebetween.

The pin guide 400 has a ring-shaped collar 408 inside the housing 401 to prevent the housing 501 of the pressing member 500 provided inside the pin guide 400 from flowing. do.

The collar 408 is mainly used to be fitted to the shaft or pipe, and the like to prevent the shaft from side to side in the shape of a frame or ring, mainly made of mild steel material.

The pressing member 500 has a hollow cylindrical housing 501 is provided inside the pin guide 400, the pressing protrusion 502 is formed on the front surface of the housing 501, the pressing protrusion 502 The inclined surface formed on the periphery is in close contact with the sliding surface 306 of the clamp pin 310, and is provided between the second spring support 504 provided on the front surface of the first spring support 404 and the housing 501. And a second spring 506 for pressing the pressure protrusion 502.

The pressing member 500 has the pressing protrusion 502 supported and fixed to one side of the unlocking protrusion 606 of the shaft 600, but the pressing protrusion 606 moves forward. 502 is released and moved forward.

The pressing member 500 includes the second spring support 504 on the front surface of the first spring support 404 and the housing 501 inside the pin guide 400 to support the second spring support. By providing a second spring 506 between the 504 and the housing 501, the elastic force of the second spring 506 pressurizes the pressure protrusion 502, the inclined surface of the pressure protrusion 502 is The clamp pin 310 is rotated by pushing the sliding surface 308 of the clamp pin 310.

The shaft 600 is provided in the second through portion 204 of the rotor 200, and the tip portion penetrates the clamp 300 and the pressing member 500 by the elastic force of the shaft spring 602 along the axial direction. The moving shaft 604 is formed to move forward and backward, and is coupled to the front end of the moving shaft 604 to support the pressing protrusion 502, and the fixing protrusion 302 of the clamp pin 310 is formed at the front end thereof. The unlocking protrusion 606 which is formed to slide | slid to form a single layer is provided.

The shaft 600 is provided inside the unlocking protrusion 606 and is fixedly coupled to the moving shaft 604 by a shaft fixing tool 606a that is radially opened or narrowed.

The shaft 600 is formed with an insertion groove 606b into which the tool t is inserted in the center of the unlocking protrusion 606, and further includes a guide bush 608 around the insertion groove 606b. Doing.

The shaft 600 is formed to surround the outer circumferential surface of the moving shaft 604 to guide the moving shaft 604 by moving along the moving shaft 604 when the moving shaft 604 moves forward or backward. The member 609 is further provided.

The shaft 600 has a fixed protrusion 302 of the clamp pin 310 sliding on a curved monolayer formed at the front end of the unlocking protrusion 606 as the unlocking protrusion 606 moves forward and backward. Open or narrow to lock or release the tool t.

The shaft 600 is coupled to the tool t in a state in which the guide bush 608 is coupled to the insertion groove 606b to prevent the tool t from being damaged.

The guide bush 608 guides the rotating tool to prevent the tool from flowing during the high speed rotation, and prevents the friction surface from being damaged by the rotational force.

Since the guide member 609 surrounds and supports the outer circumferential surface of the moving shaft 604, when the shaft 600 moves forward and backward, the moving shaft 604 is guided by the guide member 609 to quickly move without flow. To be moved before and after.

The tool clamping device according to the present invention configured as described above is used as follows.

First, the first extension groove 206 of the rotor 200 coupled to the tool t in the first through portion 102 of the stator 100 and rotatably disposed by the bearing 202. Is coupled to the outside, and is released separately when the hydraulic device (not shown) for moving the shaft 600 forward, the shaft 600 is moved to the rear by the elastic return force of the shaft spring (602) As the unlocking protrusion 606 moves backward, the fixing protrusion 302 of the clamp pin 310 is slid to a single layer of the unlocking protrusion 606, and the coupling groove of the clamp pin 310 is formed. In the state in which the engaging protrusion 402 of the pin guide 400 is coupled to 306 to closely support the clamp pin 310, the unlocking protrusion 606 is a pressing protrusion of the pressing member 500. The slab formed on the engaging portion 304 of the clamp pin 310 while simultaneously supporting the 502 to the rear. As the pressing protrusion 502 of the pressing member 500 supporting the idling surface 308 is moved backward, the pressing protrusion 502 slides with the sliding surface 308 to rotate the clamp pin 310 so that the clamp 300 Is radially opened and the tool t is rotated at a high speed by rotating the rotor 200 while the fixing protrusion 302 of the clamp 300 is fixed to the step t1 of the tool t. . At this time, the clamp pin 310 is rotated on the basis of the engaging protrusion 304 caught in the second expansion groove 208 of the rotor 200.

In addition, the coupling protrusion 402 is formed by the first spring 406 provided between the first spring support 404 and the housing 401 provided at the rear end of the housing 401 of the plate guide 310. ) Is pressed to closely hold the locking protrusion 304 of the clamp pin 310 so that the clamp pin 310 is in close contact with the second expansion groove 208 of the rotor 200.

In addition, the pressing member provided inside the pin guide 400 by having a ring-shaped collar 408 inside the housing 401 provided with the first spring 406 of the pin guide 310. The housing 501 of the 500 is prevented from flowing.

On the other hand, the pressing member 500 is provided in the housing 401 of the pin guide 400, between the second spring support 504 and the housing 501 provided at the rear end of the housing 501 The pressing protrusion 502 is pressed by the second spring 506 provided in the lock release portion 606 of the shaft 600 in close contact with the sliding surface 308 of the clamp pin 310. As the c) moves backward, the pressing member 502 is pushed backward by the unlocking protrusion 606, thereby sliding the pressing member 500 to rotate the clamp pin 310.

At this time, the second spring 506 is pressurized as the pressing protrusion 502 moves backwards, but when the unlocking protrusion 606 moves forward, the pressing protrusion 502 is released to press the pressing protrusion 502. ) Is advanced by the elastic return force.

Subsequently, the shaft 600 is moved forward by a predetermined distance by a hydraulic device provided separately from the outside, and the shaft spring 602 of the shaft 600 is moved when the shaft 600 is advanced. When it is pressurized and the hydraulic device is released, the shaft 600 is reversed backward.

In this case, the unlocking protrusion 606 coupled to the tip of the moving shaft 604 of the shaft 600 is simultaneously moved as the moving shaft 604 moves, and the locking protrusion 606 moves while the locking protrusion 606 moves. The fixing pin 302 of the clamp pin 310 is slid to a curved monolayer formed at the front end of the unlocking protrusion 606 so that the clamp pin 310 is opened or narrowed.

In addition, the moving shaft 604 of the shaft 600 is provided inside the unlocking protrusion 606 and is fixedly coupled to the shaft fixture 606b which is radially opened or narrowed.

In addition, the tool t is coupled to the edge of the insertion groove 606c of the unlocking protrusion 606 in a state where the guide bush 608 is coupled to the unlocking protrusion 606 when the tool t rotates at a high speed. The insertion groove 606c portion of the wear is prevented and prevents the flow caused by the high-speed rotation.

In addition, when the shaft 600 moves forward and backward, the guide member 609 is coupled to the outer circumferential surface of the moving shaft 604 to guide the moving shaft 604 so that the moving shaft 604 flows. It can prevent.

Thus, after the work in the fixed state of the tool (t) by moving the shaft 600 to the front using a hydraulic device that is installed separately to the outside to separate the tool (t), the unlocking protrusion ( The pressing protrusion 502 of the pressing member 500 supported by the 606 is moved forward by the second spring 506 to form a sliding surface 308 formed on the locking protrusion 304 of the clamp pin 310. ) And the clamp pin 310 is rotated by sliding the fixing protrusion 302 of the clamp pin 310 which is in close contact with the sliding monolayer forming the curved shape of the unlocking protrusion 606 while sliding. As the 300 is narrowed radially, the fixing protrusion 302 fixing the tool t is separated from the step t1 of the tool t, thereby separating the tool t.

As described above, the clamp pin 310 is rotated to the pressing member 500 and the unlocking protrusion 606 by the retraction force of the shaft 600 when the tool t is fixed. The pin 310 may be prevented from being bent or damaged, and the clamp pin 310 may be prevented from damaging each component by minimizing a friction surface during operation.

The tool clamping device according to the present invention described above is not limited to the above-described embodiment, and any person having ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention as claimed in the following claims. It will be said that there is a technical spirit of the present invention to the extent that it can be variously changed.

10,100: stator 11,102: first through part
15,202: Bearing 20,200: Rotor
21,204: 2nd through part 22,206: 1st extended groove part
23,208: second expansion groove 30,300: clamp
31,310: Clamp pin 31a, 304: Hanging part
31b: sliding protrusion 40,400: pin guide
41: spring 50,600: shaft
51,602: shaft spring 52,606: unlocking protrusion
302: fixing protrusion 306: coupling groove
308: sliding surface 401,501: housing
402: engaging protrusion 404: first spring support
406: first spring 408: color
500: pressing member 502: pressing protrusion
504: second spring support 506: second spring
604: moving shaft 606a: shaft fixture
606b: Insertion groove 608: Guide bush
609: guide member t: tool
t1: step

Claims (5)

Stator 100 having a first through portion 102 in the inner center; and
It is rotatably disposed by a plurality of bearings 202 interposed between the edges in the first through portion 102 of the stator, the second through portion 204 is formed in the inner center, the second through portion ( A rotor 200 in which first and second expansion grooves 206 and 208 are formed on a tip inner wall surface of the front end 204;
A fixing protrusion 302 is formed at the tip of the second through portion 204 of the rotor 200, and clamps the tool t entering the first expansion groove 206 while being radially opened and narrowed. The rear end is formed with a locking protrusion 304 which is caught by the second expansion groove 208 to be rotated, the coupling groove 306 through which the center portion of the locking protrusion 304 is vertically formed. A clamp 300 having a plurality of clamp pins 310 having a sliding surface 306 formed on one side of the locking protrusion 304 so as to face the second expansion groove 208;
A plurality of coupling protrusions 402 protruding from the front surface of the hollow cylindrical housing 401 are coupled to the coupling grooves 306 of the clamp pins 310 to closely support the clamp pins 310, and a rear end thereof. A pin guide 400 provided between the first spring support 404 and the housing 401 coupled to the first spring 406 for applying an elastic force to the coupling protrusion 402;
The hollow cylindrical housing 501 is provided in the pin guide 400, the pressing protrusion 502 is formed on the front surface of the housing 501, the inclined surface formed around the pressing protrusion 502 is The sliding surface 306 of the clamp pin 310 is in close contact and is provided between the second spring support 504 and the housing 501 provided on the front surface of the first spring support 404 and the pressing protrusion 502. A pressing member (500) having a second spring (506) for pressing the pressure; And
Is provided in the second through portion 204 of the rotor 200, the front end portion is passed through the clamp 300 and the pressing member 500 by the elastic force of the shaft spring 602 along the axial direction forward and backward A shaft 604 is formed, and is coupled to the front end of the moving shaft 604 to support the pressure protrusion 502, and forms a monolayer so that the fixed protrusion 302 of the clamp pin 310 slides on the front end. Tool clamping device, characterized in that consisting of; a shaft 600 consisting of an unlocking protrusion (606). The method of claim 1,
The pin guide 400 is a tool clamping device, characterized in that further provided with a ring-shaped collar (408) inside the coupling protrusion (402) provided with the first spring (406). The method of claim 1,
The shaft 600 is provided inside the unlocking protrusion 606, the tool clamping device, characterized in that the moving shaft 604 is fixedly coupled to the shaft fixture 606a which is radially opened or narrowed. . The method according to claim 1 or 3,
The shaft 600 has an insertion groove 606c in which a tool t is inserted in the center of the unlocking protrusion 606, and further includes a guide bush 608 around the insertion groove 606b. Tool clamping device, characterized in that. The method of claim 4, wherein
The shaft 600 is formed to surround the outer circumferential surface of the moving shaft 604 and further comprises a guide member 609 for guiding the moving shaft 604 when the moving shaft 604 moves forward, backward. Tool clamping device.
KR1020100054523A 2010-06-09 2010-06-09 Apparatus for clamping of tools KR101131456B1 (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100054523A KR101131456B1 (en) 2010-06-09 2010-06-09 Apparatus for clamping of tools

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KR20110134762A true KR20110134762A (en) 2011-12-15
KR101131456B1 KR101131456B1 (en) 2012-04-12

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CN108969933A (en) * 2018-07-16 2018-12-11 芜湖恒跃智能装备有限公司 A kind of clamp fixture of fixed vehicle-mounted fire extinguisher
WO2022040326A1 (en) * 2020-08-18 2022-02-24 Milwaukee Electric Tool Corporation Hole saw arbor assembly
KR102537708B1 (en) 2022-08-20 2023-05-30 안광진 Tool clamp

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JP3785544B2 (en) * 1996-02-01 2006-06-14 株式会社ニイガタマシンテクノ Machine tool spindle equipment
JP2000126911A (en) 1998-10-22 2000-05-09 Nikken Kosakusho Works Ltd Part clamping device of spindle
JP5110083B2 (en) * 2007-07-24 2012-12-26 日本精工株式会社 Spindle device
KR101108644B1 (en) * 2009-10-19 2012-02-06 부산대학교 산학협력단 Tool Clamping Unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108969933A (en) * 2018-07-16 2018-12-11 芜湖恒跃智能装备有限公司 A kind of clamp fixture of fixed vehicle-mounted fire extinguisher
CN108969933B (en) * 2018-07-16 2021-01-12 芜湖恒跃智能装备有限公司 Fixture tool for fixing vehicle-mounted fire extinguisher
WO2022040326A1 (en) * 2020-08-18 2022-02-24 Milwaukee Electric Tool Corporation Hole saw arbor assembly
KR102537708B1 (en) 2022-08-20 2023-05-30 안광진 Tool clamp

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