KR102029215B1 - special Chuck for fixing a baffle - Google Patents

Abstract

The present invention relates to a special chuck for fixing a baffle and, more specifically, to a special chuck for fixing a baffle to fasten an unprocessed surface and a processed surface, capable of firmly fixing a baffle of a large size and thin thickness without deformation of the baffle by being meshed with a conventional chuck. The special chuck for fixing a baffle comprises a special chuck body, a jaw, a scroll, a pinion gear, and a circular jig. The special chuck body forms a plurality of guide grooves on a circumference toward a penetrating hole of the center. The jaw is inserted into a guide groove of the special chuck body, and fixes the baffle by being moved toward the penetrating hole of the special chuck body. The scroll is installed inside the special chuck body and moves the jaw according to the rotation. The pinion gear is engaged with the scroll and rotates the scroll. The circular jig is combined with a front end of the special chuck body with a bolt, forms an opening hole corresponding to the jaw toward the center without interference when the jaw is moved, and adheres the baffle to the front end. The jaw includes: a body which forms guide grooves inserted into a guide rail of the special chuck body on both sides; a rack gear which is engaged with the scroll on one surface of the body; and a fastener which is provided in one end of the body, protrudes from the front end of the jig, and pressurizes the outer circumferential surface of the baffle. The special chuck for fixing a baffle to fasten an unprocessed surface and a processed surface removes necessity of buying a separate large rack by fixing the baffle and firmly fixes a thin baffle without deformation of the baffle.

Description

Special Chuck for fixing a baffle}

The present invention relates to a special chuck for fixing a baffle, and more particularly, a special fastening for a baffle that is capable of fastening a large size and a thin baffle firmly without baffle deformation by tightening a conventional chuck. It's about Chuck.

In general, the lathe chuck is used to fix a workpiece using three to four jaws moving in all directions, and is assembled to the end of the main shaft. The lathe chuck has a main chuck body having a plurality of guide grooves formed around the center through hole, and a jaw inserted into the guide groove of the main chuck body to move toward the through hole of the main chuck body to fix the workpiece. It is installed in the main chuck body and consists of a scroll for moving the jaw as it rotates, and a pinion gear for engaging with the scroll to rotate.

Therefore, the operator rotates the pinion with a wrench to fix the workpiece, all the jaws move outwardly of the body chuck as the pinion and the scroll engaged with the pinion rotate, and the jaws are spaced apart from each other, and the workpiece is bitten between the gaps. After the pinion is rotated in the opposite direction, the jaws move in the direction of the workpiece and firmly bite the workpiece.

However, such a conventional lathe chuck has a limitation in fixing a workpiece according to a predetermined specification. That is, since there is a limit in which the jaw moves, there is a problem in that a lathe suitable for fixing a large workpiece beyond the limit must be provided.

In addition, it is difficult to firmly fix the large diameter and thin workpieces and machined surfaces such as baffles for semiconductor cleaning. That is, when the jaw is moved to strongly chuck the workpiece, the workpiece is thin, so that the deformation occurs while protruding to one surface, and when the pressure is already strongly processed, the surface is recessed or a mark is generated. Fixing weakly in consideration of such a deformation causes a problem in that a spin occurs in the process of cutting the workpiece, thereby causing a dimension error in the workpiece. Especially in the case of a baffle that requires dimensional accuracy, many problems occur due to this problem.

KR Patent Publication No. 10-0385365 (2003.05.14) KR Patent Publication No. 10-2012-0074878 (2012.07.06)

Accordingly, the present invention has been made to solve the same problem as the prior art, the surface chuck can be fixed even if the chuck for the lathe can be fixed, and even if the workpiece is thin, even if the surface tightening and tightening the processing surface tightening The purpose is to provide a special chuck for securing the baffle.

The special chuck for fixing the baffle that is capable of tightening the raw surface and tightening the processed surface according to the present invention for achieving the above object,

A special chuck body having a plurality of guide grooves formed around the center through-hole;

A jaw inserted into the guide groove of the special chuck body to move toward the through hole of the special chuck body to fix the baffle;

A scroll installed inside the special chuck body to move the jaw as it rotates;

A pinion gear meshed with the scroll to rotate the scroll;

A circular jig bolted to the front end of the special chuck body and having an open hole corresponding to the jaw toward the center so as not to interfere with the jaw movement, and a baffle close to the front end; Including;

Joo said,

A body having guide grooves fitted to guide rails of the special chuck body on both sides;

A rack gear engaged with the scroll on one side of the body;

A fastener provided at one end of the body and protruding to the tip of the jig to press the outer circumference of the baffle; Characterized by including.

In addition, the fastener is formed more than three times wider than the width of the body, characterized in that the surface in close contact with the baffle is formed in a curved surface.

In addition, the fastener is protruded to the front end over the multi-stage, characterized in that the surface in close contact with the baffle is formed in a curved surface.

In addition, the body is formed with a plurality of bolt holes at the end, the fastener is characterized in that the fastener can be replaced by forming a plurality of fastening holes corresponding to the bolt hole.

The special chuck for fastening the baffle that is capable of tightening the raw surface and tightening the processed surface according to the present invention does not need to purchase a separate large shelf because the baffle can be fixed, and the effect of being able to firmly fix the thin baffle even without deformation of the baffle. have.

In addition, it is possible to replace the fasteners of the jaw has the effect of recycling the body when the fasteners wear or deformation.

1 is a use state showing a state in which a special chuck for fixing the baffle according to the present invention is installed.
Figure 2a, 2b is a perspective view showing the structure of the jig according to the present invention.
Figure 3a, 3b is a perspective view showing the structure of the jaw is provided with the raw surface fastener according to the present invention.
Figure 4a, 4b is a perspective view showing the structure of a jaw equipped with a machining surface fastener according to the present invention.
Figure 5 is an enlarged view of the main portion showing the coupling structure of the jaw and pinion gear to the scroll according to the present invention.
Figure 6 is an exemplary view installed jaw equipped with a machining surface fastener according to the present invention.
Figure 7a to 7e is a state diagram showing the process of processing the baffle using a special chuck for fixing the baffle according to the present invention.

With reference to the accompanying drawings, a preferred embodiment of the baffle fixing special chuck capable of tightening the raw surface and tightening the working surface according to the present invention as shown in these drawings will be described in detail.

1 is a use state diagram showing a state in which a special chuck for fixing the baffle is installed in accordance with the present invention, Figures 2a, 2b is a perspective view showing the structure of the jig, Figures 3a, 3b is a structure of the jaw provided with the raw surface fasteners 4A and 4B are perspective views illustrating a structure of a jaw having a work surface fastener, and FIG. 5 is an enlarged view of a main part showing a state in which a jaw and pinion gear is coupled to a scroll, and FIG. 6 is a work surface fastener. 7A to 7E are diagrams illustrating a process of processing a baffle using a special chuck for fixing a baffle.

As shown in these drawings, the special chuck 100 for fastening the baffle that is capable of tightening the raw surface and tightening the processed surface according to the present invention includes a special chuck body having a plurality of guide grooves 12 formed around the center through-hole. 10); Jaws (20) inserted into the guide grooves (12) of the special chuck body (10) to move toward the through holes of the special chuck body (10) to fix the baffle (B); A scroll 30 installed inside the special chuck body 10 to move the jaw 20 as it rotates; A pinion gear 40 engaged with the scroll 30 to rotate the scroll 30; The circular jig 50 is bolted to the front end of the special chuck body 10 and an open hole 52 corresponding to the jaw 20 is formed toward the center so as not to interfere with the jaw movement, and the baffle B is in close contact with the front end. ); It includes.

The special chuck body 10 is made of a cylinder as shown in Figure 5, the guide groove 12 is formed in three directions. A through hole is formed in the center of the special chuck body 10 so that a rod-shaped workpiece can be inserted into and fixed in the through hole. This is to make it possible to fix not only the baffle 1 but also a general workpiece. The special chuck body 10 is fixed to the outer circumferential surface of the main chuck (1).

The jaws 20 are inserted in the guide grooves 12 of the special chuck body 10, respectively, and slide in the longitudinal direction of the guide groove 12, that is, the center direction of the special chuck body 10, and a baffle B positioned at the center thereof. ) Will be fixed. The jaw 20 is provided with an elongated body 21, a rack gear 22 provided on one surface of the body 21, and one end of the body 21, as shown in Figure 3a, 3b, 4a, 4b It consists of fasteners 23.

The body 21 has guide grooves 24 formed at both sides thereof, and guide rails 13 are formed at both sides of the guide groove 12 of the special chuck body 10 to guide guides 24 of the body 21. ) Slides into the guide rail 13 of the special chuck body 10.

The rack gear 22 is integrally formed on one surface of the body 21 and engaged with the spiral winding of the scroll 30 provided in the special chuck body 10 to move the body 21 by rotating the scroll 30. This is done.

The fastener 23 is provided at one end of the body 21 to press the outer periphery of the baffle B, and the raw surface fastener 23a and the processed surface fastener 23b are used. The raw surface fastener 23a is formed to be the same as or slightly wider than the width of the body 21, and protrudes to the front end over a plurality of steps such as a step shape. The processing surface fasteners 23b are formed three times wider than the body 21 and are formed in a 'T' shape. The raw surface fastener 23a and the processed surface fastener 23b are formed to have a curved surface that is in close contact with the baffle B so as to be firmly attached to the outer circumference of the baffle B.

Here, the body 21 forms a plurality of bolt holes 25 at the end, and the fastener 23 forms a plurality of fastening holes 26 corresponding to the bolt holes 25 to fasten the fastener (from the body 21). 23) Allow exchange. It is possible to recycle the body 21 difficult to process by replacing only the fastener 3 when deformation and wear of the fastener 23 occurs.

The raw surface fastener 23a and the processed surface fastener 23b may be integrally formed. That is, to form the surface 21 fasteners 23a protruding to the tip over the multi-stage in a staircase shape, and protrudes to the tip of the raw surface fasteners 23a to the end and three times or more than the width of the body 21 Widely formed processing surface fasteners 23b are integrally formed. Thus, if the raw surface fastener 23a and the processing surface fastener 23b are integrally molded, they can be used without replacement.

The scroll 30 is installed to rotate inside the special chuck body 10, as shown in FIG. 5, and has a disc shape, and a spiral winding 31 is formed on one surface of the jaw 20. It meshes with the gear 22. The scroll 30 is geared with the pinion gear 40 is formed on the other side of the circular gear.

The pinion gear 40 is installed to idle from the special chuck body 10 as shown in FIG. 5 and meshes with the gears of the scroll 30. And the wrench groove 41 is formed in one end exposed to the outside so that the rotation is made by the wrench 41. Accordingly, when the pinion gear 40 is rotated using the wrench 41, the scroll 30 rotates, and the jaw 20 engaged with the scroll 30 is centered on the special chuck body 10 according to the rotation direction of the wrench. Or move in the opposite direction to fix the baffle (B) while the gap of the jaw (20) is narrowed or away.

The jig 50 is fixedly installed at the tip of the special chuck body 10, and has a disc shape as shown in FIGS. 2A and 2B, and corresponds to a bolt hole 14 formed in the special chuck body 10. The fastening hole 51 is formed. The jig 50 is formed with a plurality of open holes 52 that are open around the opening 52 is formed to correspond to the guide groove 12 of the special chuck body 10. In addition, a hole 53 corresponding to the through hole of the special chuck body 10 is formed at the center of the jig 50.

Since the jig 50 prevents the deformation of the baffle B when the baffle B is in close contact with the jig 50, the jig 50 includes a plurality of jig 50 having a surface shape corresponding to the shape of the baffle B surface. Make sure all sides are in close contact.

Therefore, the jaw 20 inserted into the guide groove 12 of the special chuck body 10 does not interfere with the jig 50. In addition, the body 21 and the fastener 23 of the jaw 20 may protrude to the tip of the jig 50 to fix the baffle B that is in close contact with the tip of the jig 50.

In order to fix the baffle B using the baffle fixing special chuck 100 having such a structure, first, the baffle fixing special chuck 100 is bitten and fixed to the existing main chuck 1. The jaw 20 provided here uses a rough surface fastener 23a.

In this state, when the pinion gear 40 is rotated by using a wrench while the baffle B of the disc shape is in close contact with the tip of the jig 50, the scroll 30 engaged with the pinion gear 40 rotates. The jaw 20 engaged with the scroll 30 moves in the center direction of the special chuck body 10 to firmly fix the outer circumference of the baffle B. When a circular groove is formed on one surface of the baffle B, it may be fixed by pressing the inner circumference of the groove as shown in Figure 7a. In this state, the baffle B is cut, and one outer periphery is cut to a predetermined depth in accordance with the designed dimension as shown in FIG. 7B. When the cutting of the outer periphery is completed, as shown in Fig. 7c, the exposed one surface of the baffle B is cut through roughing and finishing until the designed dimension.

When one side processing of the baffle B is completed, the baffle B is turned upside down and fixed for the other side processing as shown in FIG. 7D. That is, as in the above-described method, the jaw 20 is retracted to release the fixing of the baffle B, and the jaw 20 is replaced with the jaw 20 provided with the machined surface fastener 23b. Then turn the baffle (B) upside down, and then prepare the opposite side. At this time, the processing surface fastener 23b presses and fixes the outer circumferential surface of the processed baffle B. Since a large area of the processing surface fastener 23b is in close contact with the baffle B, it is possible to firmly fix the outer circumferential surface without deformation. Do. At this time, using a torque wrench to fix the baffle (B) in the line does not deform. When the fixing of the baffle B is completed, as shown in FIG. 7E, the unprocessed outer circumferential surface and one side are cut through roughing and cutting to complete the processing.

1: Main Chuck 10: Special Chuck Body 12: Guide Home
13: guide rail 14, 25: bolt hole 20: jaw
21 body 22 rack gear 23 fasteners
23a: raw surface fastener 23b: machined surface fastener 24: guide groove
26, 51: Fastener 30: Scroll 31: Wound winding
40: pinion gear 41: wrench groove 50: jig
52: opening hole 53: hole
100: special chuck for fixing the baffle B: baffle

Claims (5)

In the special chuck which is bitten by the main chuck (1), in order to fix the baffle of the overspec which cannot be chucked to the main chuck (1),
The special chuck,
A special chuck body 10 having a plurality of guide grooves 12 formed around the center through hole; A jaw (20) inserted into the guide groove (12) of the special chuck body (10) to move toward the through hole of the special chuck body (10) to fix the baffle (B); A scroll 30 installed inside the special chuck body 10 to move the jaw 20 as it rotates; A pinion gear 40 engaged with the scroll 30 to rotate the scroll 30; The bolt is coupled to the front end of the special chuck body 10, the opening hole 52 corresponding to the jaw 20 is formed toward the center so as not to interfere when the jaw 20 moves, and the baffle B is in close contact with the front end. Jig 50; Including;
The jaw 20 is,
A body 21 having guide grooves 24 fitted to guide rails 13 of the special chuck body 10 on both sides; A rack gear 22 engaged with the scroll 30 on one surface of the body 21; A fastener 23 provided at one end of the body 21 and protruding to the tip of the jig 50 to press the outer circumference of the baffle B; Including,
The fastener 23 is a step surface protruding to the end of the raw surface fastener 23a and protruded to the front end over the multi-stage, the processing protruded to the distal end and formed three times or more wider than the width of the body 21 A special chuck for fixing baffles, which is capable of tightening raw surfaces and tightening processed surfaces, wherein the surface fasteners 23b are integrally formed. delete delete delete delete

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