KR20170052845A - The changing type bite for lathe - Google Patents

The changing type bite for lathe Download PDF

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Publication number
KR20170052845A
KR20170052845A KR1020150154864A KR20150154864A KR20170052845A KR 20170052845 A KR20170052845 A KR 20170052845A KR 1020150154864 A KR1020150154864 A KR 1020150154864A KR 20150154864 A KR20150154864 A KR 20150154864A KR 20170052845 A KR20170052845 A KR 20170052845A
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KR
South Korea
Prior art keywords
mounting
fitting
bite
fastening
hole
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Application number
KR1020150154864A
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Korean (ko)
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KR101865695B1 (en
Inventor
김학진
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김학진
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Priority to KR1020150154864A priority Critical patent/KR101865695B1/en
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Publication of KR101865695B1 publication Critical patent/KR101865695B1/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
    • B23B29/04—Tool holders for a single cutting tool
    • B23B29/043—Tool holders for a single cutting tool with cutting-off, grooving or profile cutting tools, i.e. blade- or disc-like main cutting parts
    • 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
    • B23B29/04—Tool holders for a single cutting tool
    • B23B29/08—Tool holders equipped with grooves arranged crosswise to the longitudinal direction for setting the cutting tool
    • 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
    • B23B29/04—Tool holders for a single cutting tool
    • B23B29/12—Special arrangements on tool holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

The present invention relates to a replaceable bite for a lathe, which is fixated on a tool rest of the lathe, comprising: an installation/fixation unit which comprises: a shank which forms an insertion groove with a cross-section in the shape of <img id=i0012 he=5 wi=5 file=pat00012.jpg img-format=jpg /> in the front and which is fixated on the tool rest; and a combination hole which is formed in front of the shank and which communicates with the insertion groove; a mounting/processing unit which comprises: an insertion stone unit which has a cross-section in the shape of <img id=i0013 he=5 wi=5 file=pat00013.jpg img-format=jpg />, and which is inserted into the insertion groove of the installation/fixation unit; a fastening hole which penetrates and is formed in the insertion stone unit to correspond to the combination hole; and a head which has a tip and which is formed as one body in front of the insertion stone unit; and a fastening bolt which is fastened with the fastening hole of the mounting/processing unit with a screw through the combination hole of the installation/fixation unit and which fixates the mounting/processing unit inserted into the insertion groove on the installation/fixation unit. The bite of the present invention is replaceable with another type of bite just by replacing the mounting/processing unit with the tip mounted through the fastening bolt.

Description

The changing type bite for lathe &lt; RTI ID = 0.0 &gt;

The present invention relates to a detachable replaceable lathe, and more particularly, to a method and apparatus for mounting a detachable replaceable lathe, and more particularly, It is possible to quickly and accurately replace the height of the workpiece with the center of the workpiece, thereby shortening the working time and improving the productivity, The present invention relates to a detachable replaceable shelf bite that does not cause deterioration in durability.

BACKGROUND ART Generally, a lathe includes a main shaft which is driven by a main shaft motor, a bed which is provided in front of the main shaft shaft, a reciprocating table provided on the upper side of the bed and including a tool table on which a cutting tool is mounted, It is made as a thrust which clamps one end of a long workpiece.

As shown in FIG. 1, the tool holder is mounted on the upper side of the carriage which is mounted on the upper side of the carriage and is moved in the X axis. The tool holder includes a base positioned at the lower portion and fixed to the carriage, A tool holder and a handle including a spiral shaft passing through the center of the base, wherein a mounting groove for mounting a bite is formed in the middle of the periphery of the tool holder, and on the upper side of the mounting groove, A plurality of bolts for pressing the bolts are fastened.

Therefore, when the cutting operation is performed using the above tool holder, first, the handle located on the upper side of the tool holder is rotated counterclockwise to release the tool holder from the base, and then the four It is possible to select a byte necessary for machining among the bites and position it to the machining portion side, and to rotate the handle in the clockwise direction to cut the fixed holder and proceed the cutting.

However, in the case of performing the cutting operation through the conventional tool bobbin configured as described above, the number of bites (3 to 4) provided on the tool bobbin is limited, which results in a problem that the machining efficiency of the machine tool is reduced.

In other words, since the installation of the bite required for machining is limited, it is necessary to replace the tool with a tool such as a bite or a knurling suitable for the type of machining operation. There is a problem in that time is consumed to perform the operation.

On the other hand, in recent years, when a tip provided on a bite is worn or damaged, a technique of replacing only a tip without replacing the entire bite has been devised through a public utility model publication.

"Public Utility Model Bulletin No. 20-2009-0002839 (Mar. 23, 2009)" Holder for Bite of Shelf "- Hyundai Steel Corporation

However, the conventional bite holder for a lathe described above has a problem in that it can not be replaced with other types of bite tips suitable for the type of machining operation, as shown in Fig. 2, there was.

Therefore, when using the conventional technique, there is a problem that it is necessary to replace and install a suitable type of byte every time the type of the processing operation is changed. Due to the correction time of the height at the time of replacement installation for each type of byte, It takes a long time, and the operation time is delayed.

Thus, the applicant of the present invention has proposed a method of mounting a shank of a bite on a tool table by using a mounting fixture fixedly mounted on a tool table and a mounting bracket mounted on the fixture by forming a tip, .

An object of the present invention is to standardize a mounting table having a desired tip formed in a mounting table fixed to a tool table so that it can be easily installed and replaced so that the height of the bite and the center of the workpiece, And which can be replaced, thereby shortening the working time and improving the productivity.

Further, in the present invention,

Figure pat00001
And the fitting protrusions of the mounting cradle fitting into the fitting grooves and brought into close contact with each other,
Figure pat00002
The mounting cradle can be easily installed in the front, left, and right directions of the installation and maintenance unit, and the fitting protrusion of the combined mounting cradle can be kept in a state of being completely in close contact with the fitting projection of the mounting cradle The present invention has been made in view of the above problems, and it is an object of the present invention to provide a detachable replaceable shelf bite capable of preventing the occurrence of trembling during cutting processing, without deteriorating the performance and durability of the bite.

According to an aspect of the present invention,

Figure pat00003
A shank fixedly attached to the tool rest by forming a fitting groove having a cross section of a shape and a fitting hole formed at the front of the shank to form a coupling hole communicating with the fitting groove;
Figure pat00004
And a fastening hole formed to have a cross-sectional shape and to be fitted into the fitting groove of the fitting fixing part and coming into tight contact with the fastening hole, the fastening hole passing through the fitting projection to correspond to the fitting hole, A mounting seat comprising a head to be formed; And a fastening bolt which is screwed to a fastening hole of the fastening bolt through the fastening bolt of the fastening bolt and fastens the fastening bolt fitted to the fastening bolt in the fitting fastening bolt, Wherein the replaceable insert can be replaced with another type of insert only by replacing and mounting the insert.

The replaceable lathe bite according to the present invention can be easily installed and replaced by standardizing the mounting position of the tool having the desired tip in the mounting and fixing part fixed to the tool holder. Therefore, even if the operator is not skilled, the height of the bite, It is possible to easily and promptly and precisely replace it, thereby reducing the working time and improving the productivity.

Further, in the present invention,

Figure pat00005
And the fitting protrusions of the mounting cradle fitting into the fitting grooves and brought into close contact with each other,
Figure pat00006
The fitting cradle can be easily installed in the front, left, or right direction of the installation cradle, and the fitting protrusion of the combined mounting cradle can be kept in a state of being completely in close contact with the fitting protrusion of the fitting cradle It is a useful invention that does not cause deterioration in the performance and durability of the bite because no shaking occurs in the cutting process.

1 is a perspective view showing a conventional tool stand;
2 is a perspective view showing a conventional holder for a bite.
FIG. 3 is a perspective view of a detachable replaceable lathe according to the present invention. FIG.
4 is a cross-sectional view of a replaceable lathe bite of the present invention.
Fig. 5 is an exemplary view showing a state in which the separable interchangeable shelf bite of the present invention is engaged; Fig.

Hereinafter, the structure of the present invention will be described.

3 to 5, the present invention relates to a detachable replaceable lathe 50 fixed to a tool base (not shown) of a lathe (not shown), more specifically, And the fastening bolt 30 is used to easily attach the mounting bracket 20 to the mounting bracket 10 through the fastening bolt 30 to replace the bracket 20 with another type of bite. The present invention relates to a detachable replaceable shelf bite 50 that can be completely replaced.

Hereinafter, the detachable replaceable shelf bite 50 of the present invention comprising the mounting and holding part 10, the mounting bracket 20 and the fastening bolt 30 will be described in more detail.

First, the installation and setting unit 10 is a structure for fixing the present invention to a tool rest of a lathe,

Figure pat00007
(11) having a cross section of a shape of a cross section and constituting a shank (13) fixedly mounted on a tool holder, wherein a cross section of the fitting groove (11)
Figure pat00008
And the front and left and right directions of the shank 13 formed with the fitting groove 11 are opened.

The attachment and detachment portion 10 further includes a coupling hole 15 formed in the front upper portion of the shank 13 and communicating with the fitting groove 11. The coupling hole 15 is formed with a fastening bolt The head portion of the fastening bolt 30 is prevented from protruding upward from the shank 13 or the height of the shank 13 protruding upward from the shank 13 is reduced .

The engagement hole 15 may be formed so as to pass through the shank 13 in the vertical direction as long as the engagement hole 15 can communicate with the fitting groove 11, A female thread (not shown) may be formed to securely fasten the work 20.

Secondly, the mounting work 20 constitutes a tip 27 for cutting with a constitution of cutting a work (not shown) which is coupled to the mounting fixture 10 and pivoted by a main shaft (not shown) .

To this end, the mounting cradle 20 is

Figure pat00009
And a fitting protrusion 21 which is fitted to the fitting groove 11 of the fitting and fixing portion 10 and is in close contact with the fitting fitting portion 21 is formed at the rear side.

The mounting hole 20 is formed with a fastening hole 25 formed in the fitting protrusion 21 so as to correspond to the fastening hole 15 in the up and down direction. A female screw is formed on the inner periphery so that a firm and fixed installation can be achieved through the hinge 30.

The mounting base 20 further includes a head 29 mounted with a tip 27 integrally formed in front of the fitting protrusion 21 so that the tip of the workpiece Cutting processing is performed.

The tip 27 may be integrally formed with the head 29 by being sintered at a super-hardness level, but may be detached or coupled to the head 29 through a bolt to facilitate replacement due to breakage or abrasion It is preferable to be mounted in an insert manner.

Thirdly, the fastening bolt 30 is configured to firmly fasten the mounting cradle 20 that is tightly fitted to the fitting groove 11 of the fastening fastening portion, as described above, and the fitting hole 15 of the fastening fastening portion 10 And is fastened to the fastening hole 25 of the mounting work 20 through a screw.

Therefore, depending on whether or not the fastening bolts 30 are fastened, the mounting cradle 20 can be coupled to the mounting and dismounting part 10 or can be separated from the mounting and fixing part 10, There is an advantage that it can be easily replaced with bytes.

Hereinafter, the operation according to the configuration of the present invention will be described.

The fitting protrusion 21 of the fitting cradle 20 is inserted in the front or left or right direction of the fitting groove 11 formed in the fitting cradle 10 so that the fitting hole 15 of the fitting cradle 10, The fastening holes 25 of the work 20 are aligned.

Thereafter, the fastening bolt 30 is screwed into the fastening hole 25 in a state where the fastening bolt 30 passes through the fastening hole 15 of the fastening portion 10, and the head of the fastening bolt 30 is fastened to the fastening portion 10 So that it is possible to easily assemble the detachable replaceable shelf bite 50 of the present invention through the fastening portion 20 firmly fixed to the mounting and holding portion 20 Complete.

As described above, after the assembly of the present invention is completed, the present invention is fixedly mounted on a tool post of a lathe. At this time, the portion fixedly installed on the tool rest is a mounting and fixing part 10, So that the center of the workpiece is made to coincide with the height of the tip 27 formed on the mount work 20.

In this state, the worker can rotate the main spindle and simultaneously move the tool bar provided with the present invention forward, backward, leftward and rightward through a transfer belt (not shown) to machine the workpiece into a desired shape, The upper and lower surfaces and the rear surface of the fitting projection 21 formed in the mounting seat 20 are fitted and fixed in a state of being closely attached to the surfaces of the fitting groove 11 formed in the mounting and fixing part 10, There is no occurrence of trembling during processing. Therefore, even if the present invention is manufactured as a separable replacement type, there is an advantage that performance and durability are not deteriorated.

On the other hand, usually, four bites can be provided on the tool post of a lathe. When a long tool such as a knurling tool is installed on the tool post, only two bytes can be installed on the tool post.

Therefore, it is necessary for the operator to replace the corresponding bite for the various operations such as roughing, finishing, grooving and screw drilling. In the present invention, So that it is possible to save time for replacement of the bite.

In other words, in order to replace the normal bite, the shank portion fixedly mounted on the tool holder must be unfixed and replaced with a whole beverage. However, according to the present invention, the mounting workpiece 20 excluding the mounting portion 10 fixed to the tool holder It is not necessary to pay attention to the height of the tip 27 of the bite to be replaced with the center of the workpiece even when the bite 30 is replaced with another kind of bite.

Therefore, the operator using the separable interchangeable shelf bite 50 of the present invention can dramatically shorten the time required for replacing with a different bite for a desired machining operation, Can be achieved quickly and accurately, so that the working time can be shortened and the productivity can be improved.

10: installation fixture 11: fitting groove 13: shank 15: fitting hole 15a:
20: mounting position study 21: fitting projection 25: fastening hole 27: tip 29: head
30: fastening bolt
50: Bite for removable shelf

Claims (1)

In a lathe bite fastened to a tool rest of a lathe,
Ahead
Figure pat00010
And a coupling hole 15 formed in the front of the shank 13 and communicating with the fitting groove 11 is formed in the fitting groove 11, (10);
Figure pat00011
A fitting protrusion 21 formed to have a sectional shape and fitted into the fitting groove 11 of the fitting fixture 10 and coming into close contact therewith and a fitting protrusion 21 formed to penetrate through the fitting protrusion 21 to correspond to the fitting hole 15, And a head (29) having a hole (25) and a tip (27) mounted integrally on the front of the fitting projection (21);
And a mounting cradle 20 screwed to the fastening hole 25 of the mounting cradle 20 through the fastening hole 15 of the fastening fixture 10 and fitted in the fitting groove 11, And a fastening bolt (30) for fastening the fastening bolt (10)
Wherein the mounting bobbin (20) with the tip (27) mounted thereon can be replaced with another type of bite only by replacing the mounting bobbin (20) with the fastening bolt (30).
KR1020150154864A 2015-11-05 2015-11-05 The changing type bite for lathe KR101865695B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190001384U (en) 2017-12-01 2019-06-11 주식회사 한국가스기술공사 Bite structure for labyrinth seal processing of lathe
KR102164386B1 (en) * 2020-07-06 2020-10-12 권대규 Tool holder for cutting insert
CN111957995A (en) * 2020-08-28 2020-11-20 东莞市高冶切削工具有限公司 Efficient and convenient modular structure cutter bar

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980026532U (en) * 1996-11-11 1998-08-05 김영석 Tooling jig
KR20020014134A (en) * 2000-08-16 2002-02-25 방영식 Fixing Installation of bite for use of lathe
KR20090002839U (en) 2007-09-18 2009-03-23 현대제철 주식회사 Holder with Bite for Lathe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980026532U (en) * 1996-11-11 1998-08-05 김영석 Tooling jig
KR20020014134A (en) * 2000-08-16 2002-02-25 방영식 Fixing Installation of bite for use of lathe
KR20090002839U (en) 2007-09-18 2009-03-23 현대제철 주식회사 Holder with Bite for Lathe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190001384U (en) 2017-12-01 2019-06-11 주식회사 한국가스기술공사 Bite structure for labyrinth seal processing of lathe
KR102164386B1 (en) * 2020-07-06 2020-10-12 권대규 Tool holder for cutting insert
CN111957995A (en) * 2020-08-28 2020-11-20 东莞市高冶切削工具有限公司 Efficient and convenient modular structure cutter bar

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