KR20160000495U

KR20160000495U - Male cutting tools

Info

Publication number: KR20160000495U
Application number: KR2020140005799U
Authority: KR
Inventors: 이인행
Original assignee: 주식회사 인테크솔루션; 이인행
Priority date: 2014-08-01
Filing date: 2014-08-01
Publication date: 2016-02-15

Abstract

The present invention relates to a male thread cutting tool, in which a chip generated by cutting of a workpiece can be discharged to the outside of a jig body more smoothly, so that a workpiece having a long front and rear length can be cut without failing, It is possible to obtain the workpiece having a uniform screw thread on the outer circumferential surface because the worker can visually confirm the workpiece more easily and also the inner diameter size of the cutting hole of the die can be adjusted to the outer diameter size of the workpiece, There is no need to separate the die from the jig body for adjusting the inner diameter of the cutting hole of the jig body.

Description

{Male cutting tools}

The present invention can more smoothly discharge the chip generated by cutting of the workpiece to the outside of the jig body so that the workpiece having a long front and rear length can be cut without failures and further the cutting length of the workpiece can be easily The size of the inner diameter of the cutting hole of the die can be controlled with respect to the outer diameter of the workpiece, and in particular, the inner diameter of the die can be adjusted In which the dice do not have to be separated from the jig body for the sake of convenience.

In general, a cutting tool such as a universal lathe or a universal milling machine is used as a method of forming a male thread on the outer circumferential surface of a workpiece. First, the gear ratio is changed in accordance with the pitch of the male thread to be machined.

After setting the rotation speed of the main shaft at a low speed of 100 rpm or less, the processing depth of the male thread is adjusted to about 0.02 mm to 0.1 mm, and the process is performed about 15 times, which takes about 5 minutes.

In recent years, a screw cutting jig for a lathe configured to stably support and fix a die for cutting a male thread to the outer periphery of a workpiece in a lathe has been proposed in Korean Utility Model Laid-Open No. 20-2009-0000641 .

However, in the case of the Korean Utility Model Laid-Open No. 20-2009-0000641 (thread cutting jig for lathe), the chip is not smoothly discharged due to the cutting of the work, When cutting the workpiece manually, the cutting length of the workpiece can not be confirmed, so that there is a problem that a workpiece having a uniform thread line on its outer periphery can not be obtained.

Domestic public utility model publication No. 20-2009-0000641

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a cutting tool which can more smoothly discharge a chip generated by cutting of a workpiece to the outside of a jig body, The operator can visually confirm the cutting length of the workpiece more easily so that the workpiece having a uniform screw thread on the outer circumferential surface can be obtained and the inner diameter size of the cutting hole of the die can be adjusted to the outer diameter size of the workpiece It is a particular object of the present invention to provide a male thread cutting tool which does not need to separate the die from the jig body for adjusting the inner diameter size of the cutting hole of the die.

In order to accomplish the above object, the present invention provides a machining method for machining a workpiece, comprising the steps of: forming a hollow portion into which a workpiece to be cut is to be formed on an outer circumferential surface of a male thread; A jig body formed such that a discharge slit through which chips are discharged communicates with the hollow portion; And a dice portion provided in a front side of the hollow portion of the jig body and cutting the outer circumferential surface of the workpiece while the workpiece inserted in the hollow portion is fixed in position.

The jig body may include a front jig body having the hollow portion formed therein and the discharge slit formed on an outer circumferential surface thereof; And a rear jig body formed on the rear side opposite to the front side of the front side jig body.

It is preferable that a scale display part for confirming the cutting length of the workpiece is formed on the outer peripheral surface of the jig body 10 around the discharge slit of the jig body.

Furthermore, the dice may be fixed to the jig body by the first fixing member in the front side of the hollow portion of the jig body. A plurality of through holes communicating with the cutting holes are formed in a surface area around the cutting hole, and a plurality of through holes are formed in the inner surface of the die jig, And a die in which an incision slit communicating with any one of the through holes is formed in a surface portion of one of the plurality of through holes, the upper side of the jig body, A through hole communicating with the other side of the upper part of the jig body and the upper side of the upper part of the die part and the other side of the upper side of the die part is formed and the inner diameter of the cutting hole is adjusted by adjusting the width of the cutting slit while being accommodated in the through hole. It is preferable that the control unit is provided.

In addition, it is preferable that a first insertion groove into which the first fixing member is inserted is formed on an outer circumferential surface of the die jig, and a second insertion groove into which the second fixing member is inserted is formed on an outer circumferential surface of the die.

In addition, it is preferable that a through passage communicating with the hollow portion of the front side jig body is formed in the rear side body so as to extend from the front side of the rear side jig body to the other side direction of the rear side body.

The present invention can more smoothly discharge the chips generated by the cutting of the workpiece through the discharge slit formed on the outer circumferential surface of the jig body to the outside of the jig body so that the workpiece having a long front and rear length can be cut without any defect, The operator can visually confirm the cutting length of the workpiece with the naked eye to obtain the workpiece having a uniform male thread on the outer circumferential surface thereof. Further, according to the outer diameter of the workpiece, the width of the cut- It is possible to improve the accuracy of forming a male thread on the outer circumferential surface of the workpiece by adjusting the inner diameter size of the cutting hole of the die by finely adjusting the diameter of the die, There is no need to separate the dice.

1 is a perspective view schematically showing a male thread cutting tool, which is one embodiment of the present invention,
Fig. 2 is a side view of Fig. 1,
3 is an exploded cross-sectional view taken along the line A-A of FIG. 1,
Fig. 4 is an assembled cross-sectional view of Fig. 2,
5 to 7 are sectional views taken along the line B-B in Fig. 4,
8 is a cross-sectional view schematically showing a state in which the workpiece is inserted into the hollow portion of the jig body,
9 is a side view schematically showing a state where a workpiece is inserted into a hollow portion of a jig body.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The scope of the present invention is not limited to the following embodiments, and various modifications may be made by those skilled in the art without departing from the technical scope of the present invention.

1 is a perspective view schematically showing a male screw cutting tool according to an embodiment of the present invention, Fig. 2 is a side view of Fig. 1, Fig. 3 is an exploded sectional view taken along line A- FIG.

As shown in FIGS. 1 to 4, the male thread cutting tool, which is one embodiment of the present invention, includes a jig body 10 and a dice portion 20.

First, a hollow portion 110 horizontally recessed from a front side of the jig body 10 to a rear side of the jig body 10 is formed in the jig body 10.

8) is inserted into the hollow portion 110 of the jig body 10 at a predetermined length on the opposite side of the front side of the workpiece (3 in Fig. 8) to cut a male thread (31 in Fig.

The workpiece 3 generated from the workpiece 3 during the process of forming the male thread 31 on the outer circumferential surface of the workpiece 3 while cutting the outer circumferential surface of the workpiece 3 is formed on the outer circumferential surface of the jig body 10. [ The discharge slit 120 is formed to communicate with the hollow portion 110.

The discharge slit 120 may be formed to extend longitudinally from a front side of the jig body 10 to a rear side of the jig body 10 by a predetermined length.

One discharge slit 120 may be formed on the outer circumferential surface of the jig body 10 so as to communicate with the hollow portion 110. Preferably, A plurality of the discharge slits 120 may be formed on the outer circumferential surface of the jig body 10 at regular intervals.

Although not shown in the drawing, a plurality of circular discharge holes may be formed on the outer circumferential surface of the jig body 10 at equal intervals of one or two or more, but a larger amount of chips may be formed on the jig body 10 As shown in FIG. 1, it is preferable that a plurality of the discharge slits 120 are formed at equal intervals.

Next, the die 20 is provided within the hollow portion 110 of the jig body 10.

The die 20 cuts the outer circumferential surface of the workpiece 3 in a state where the workpiece 3 inserted in the hollow portion 110 of the jig body 10 is fixed in position.

3 and 4, the jig body 10 may include a front side jig body 101 and a rear side jig body 102. As shown in FIGS.

The front side jig body 101 may be formed to extend longitudinally from a front side of the front side jig body 101 toward a rear side of the front side jig body 101 by a predetermined length.

The hollow portion 110 may be formed in the front jig body 101.

A plurality of the discharge slits 120 or two discharge slits 120 communicating with the hollow portion 110 may be formed on the outer circumferential surface of the front jig body 101 at regular intervals.

The rear jig body 102 may be integrally formed on the rear side of the front side jig body 101 opposite to the front side.

The rear jig body 102 may extend longitudinally along the front jig body 101 to a predetermined length.

1 and 2, on the outer circumferential surface of the jig body 10 around the discharge slit 120 of the jig body 10, there are formed graduation lines extending back and forth along the discharge slit 120 A scale display unit 103 can be formed.

The worker can visually confirm a part of the workpiece 3 whose outer circumferential surface has been cut through the discharge slit 120. At the same time, the cutting length of the workpiece 3 before and after the cut- As shown in FIG.

3 and 4, the dice 20 may include a die jig 210 and a die 220. As shown in Fig.

The die jig 210 may be fixed in place by the first fixing member 30 in the front side of the hollow portion 110 of the jig body 10.

The first fixing member 30 is vertically screwed vertically symmetrically to the upper portion of the front jig body 101 of the jig body 10 and the lower portion of the front jig body 101, 210 and a fixing bolt tightly fixed to the lower side of the outer circumferential surface of the die jig 210, respectively.

5 to 7 are sectional views taken along the line B-B in Fig.

Next, the die 220 may be fixed to the inside of the die jig 210 by a second fixing member 40.

5, the second fixing member 40 is horizontally screwed to one side of the die jig 210 and the other side of the die jig 210 symmetrically with respect to the left and right sides of the die 220, And a stud bolt fixedly attached to one side of the outer peripheral surface and the other side of the outer peripheral surface of the die 220, respectively.

A cutting hole 221 may be formed at the center of the die 220 and an outer circumferential surface of the work 3 may be cut on the inner circumferential surface of the cut hole 221 to form a male thread 31 (222 in Fig. 1) can be formed.

A plurality of through holes 223 communicating with the cut holes 221 may be formed at equal intervals on the surface of the die 220 in the vicinity of the cut hole 221.

The upper surface portion of the die 220 in the vicinity of one of the through holes 223 of the plurality of through holes 223 is communicated with any one of the through holes 223 The cutting slit 224 can be vertically formed.

5, the upper part of the upper side of the jig body 10, the upper side of the upper part of the jig body 10, the upper part of the upper part of the dice 20 and the upper part of the upper part of the dice 20, A through-hole 50 may be formed.

The through-hole 50 may include a first through-hole 501, a second through-hole 502, and a third through-hole 503.

The first through hole 501 may be formed horizontally on one side of the upper side of the jig body 10 and on the other side of the upper side of the jig body 10.

The second through hole 502 is formed horizontally on one side of the upper portion of the die jig 210 of the dice portion 20 and on the other side of the upper side of the die jig 210 so as to communicate with the first through- .

The third through hole 503 is communicated with the first through hole 501, the second through hole 502 and the cutout slit 224 so as to communicate with the upper side of the die 220 of the die 20 And on the other side of the upper portion of the die 220, respectively.

A thread 503a may be formed on the inner circumferential surface of the third through-hole 503 formed horizontally on the other side of the upper portion of the die 220.

The adjusting portion 60 for adjusting the inner diameter of the cutting hole 221 may be received in the through hole 50 by adjusting the width W of the cutting slit 224 (D in FIG. 6).

The controller 60 may be a fixed bolt or the like.

One side of a fixing bolt or the like constituting the adjuster 60 is provided with the first through hole 501 formed on one side of the upper side of the jig body 10 and the second through hole 50 formed on one side of the upper side of the die jig 210, And the third through-hole 503 formed on one side of the upper portion of the die 220, respectively.

The other side of the fixing bolt constituting the adjusting part 60 may be screwed to the third through hole 503 formed on the other side of the upper side of the die 220.

6 and 7, when the controller 60 is rotated in the forward direction, the operator can rotate the fixing bolt or the like of the controller 60 using the tool such as a screwdriver. The width D of the cutting slit 224 is gradually narrowed so that the inner diameter of the cutting hole 221 can be gradually reduced,

The width D of the cutting slit 224 is gradually widened when the adjusting portion 60 is rotated in the reverse direction so that the inner diameter of the cut hole 221 can be gradually increased.

The width D of the cutting slit 224 of the die 220 is finely adjusted through the adjusting portion 60 according to the outer diameter of the workpiece 3 so that the cut- The diameter of the inner diameter of the workpiece 3 can be adjusted so that the accuracy of forming the male screw thread 31 on the outer circumferential surface of the workpiece 3 can be improved. In particular, in order to adjust the inner diameter size of the cut hole 221 of the die 220, It is not necessary to separate the die 220 from the jig body 10.

Next, in order to more firmly and stably fix the die jig 210 in the front side of the hollow portion 110 of the jig body 10,

5, on an outer circumferential surface of the die jig 210 facing the first fixing member 30, for example, on the upper side of the outer circumferential surface of the die jig 210 and below the outer circumferential surface of the die jig 210, The first insertion groove 211 into which the fixing member 30 is inserted may be recessed at a predetermined depth in the inner direction of the die jig 210 from the outer circumferential surface of the die jig 210. [

Further, in order to stably fix the die 220 to the inside of the die jig 210 more stably,

5, on the outer circumferential surface of the die 220 facing the second fixing member 40 and on the other side of the outer circumferential surface of the die 220 and the outer circumferential surface of the die 220, The second insertion groove 225 may be recessed at a predetermined depth in the inner side of the die 220 from the outer circumferential surface of the die 220.

8 is a sectional view schematically showing a state in which the workpiece 3 is inserted into the hollow portion 110 of the jig body 10. FIG 9 is a cross sectional view of the workpiece 3 in the hollow portion 110 of the jig body 10. [ Fig. 3 is a side view schematically showing the inserted state. Fig.

Next, in order to allow the chip of the workpiece 3 generated from the workpiece 3 to be discharged more smoothly in the outward direction of the jig body 10,

8, a through-hole 104 communicating with the hollow portion 110 of the front jig body 101 is inserted into the rear side jig body 102 from the front side of the rear jig body 102, And may extend in the other direction of the rear side of the body 102.

So that the chip of the work (3) can be smoothly discharged to the outside of the rear side of the rear side body (102) through the through hole (104).

Although not shown in the drawing, the rear jig body 102 of the jig body 10 can be fixed to a milling block of a universal mill or a milling machine of a general milling machine, and the front side of the workpiece 3 can be fixed to a chuck of a general- Can be fixed.

The milling of the universal lathe or the milling machine of the universal milling machine is advanced during the normal rotation of the chuck of the universal lathe and the die 220 cuts the outer circumferential surface of the work (3) The male thread 31 can be formed on the outer peripheral surface of the work 3 while being processed.

The present invention configured as described above allows the chip generated by the cutting of the workpiece 3 to be discharged through the discharge slit 120 formed on the outer peripheral surface of the jig body 10 more smoothly to the outside of the jig body 10 9, the cutting length of the work 3 can be easily visualized by the operator through the scale display unit 103, as shown in FIG. 9, The work 3 can be obtained by forming a uniform screw thread 31 on the outer circumferential surface of the workpiece 3 and the width W2 of the cutting slit 224 of the die 220 can be varied according to the outer diameter of the workpiece 3. [ The diameter of the cutting hole 221 of the die 220 can be adjusted by finely adjusting the diameter D of the workpiece 3 so that the accuracy of forming the male screw thread 31 on the outer peripheral surface of the workpiece 3 can be improved, , The cutter 221 of the die 220 If there is an advantage for scaling without the need to remove the die 220 from the jig body (10).

10; Jig body, 20; Dice department.

Claims

(3) is formed in a hollow portion (110) where a workpiece (3) to be cut is formed on the outer circumferential surface of the male thread (31), and the outer circumferential surface A jig body (10) formed such that a discharge slit (120) through which a chip of the work (3) is discharged communicates with the hollow portion (110);
A die part (not shown) provided in the front side of the hollow part 110 of the jig body 10 and cutting the outer peripheral surface of the work 3 in a state where the work 3 inserted in the hollow part 110 is fixed 20). &Lt; / RTI >

The method according to claim 1,
The jig body 10 includes a front jig body 101 in which the hollow portion 110 is formed and the discharge slit 120 is formed on an outer circumferential surface thereof;
And a rear jig body (102) formed on the rear side opposite to the front side of the front side jig body (101).

The method according to claim 1,
Characterized in that a graduation indicating section (103) is formed on an outer circumferential surface of the jig body (10) around the discharge slit (120) of the jig body (10) to confirm the cutting length of the work (3) .

The method according to claim 1,
The die unit 20 includes a die jig 210 fixed within the hollow portion 110 of the jig body 10 by a first fixing member 30;
A cutting hole 221 is formed in the central portion of the die jig 210 by a second fixing member 40 and a ridge 222 is formed on the inner circumferential surface of the cut hole 221, A plurality of through holes 223 communicating with the cut holes 221 are formed at equal intervals in the surface area around the cut hole 221 and one through hole 223 of the plurality of through holes 223 And a cutting slit (224) communicating with one of the through holes (223) is formed on a peripheral surface portion of the die (220)
A through hole 50 communicating with one side of the upper side of the jig body 10, the other side of the upper side of the jig body 10, one side of the upper side of the dice 20 and the other side of the upper side of the dice 20, Formed,
And an adjuster (60) for adjusting the inner diameter of the cut hole (221) by adjusting a width of the cutout slit (224) while being accommodated in the through hole (50).

5. The method of claim 4,
A first insertion groove 211 into which the first fixing member 30 is inserted is formed on an outer circumferential surface of the die jig 210,
And a second insertion groove (225) in which the second fixing member (40) is inserted is formed on an outer circumferential surface of the die (220).

3. The method of claim 2,
A through hole 104 communicating with the hollow portion 110 of the front side jig body 101 is inserted into the rear side body 102 from the front side of the rear side jig body 102 to the rear side body 102 ) Of the tool (1).