CN103551612A - Internally threaded turning tool - Google Patents
Internally threaded turning tool Download PDFInfo
- Publication number
- CN103551612A CN103551612A CN201310539235.3A CN201310539235A CN103551612A CN 103551612 A CN103551612 A CN 103551612A CN 201310539235 A CN201310539235 A CN 201310539235A CN 103551612 A CN103551612 A CN 103551612A
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- CN
- China
- Prior art keywords
- knife bar
- plane
- knife
- cutting tool
- cutter portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/06—Profile cutting tools, i.e. forming-tools
- B23B27/065—Thread-turning tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention provides an internally threaded turning tool. The internally threaded turning tool comprises a knife bar and a knife part which are of an integral molding structure, wherein the knife part is arranged on the side surface of the end part of the knife bar, and the knife part is perpendicularly arranged with the knife bar; a notch part which is cut along a direction which is perpendicular to the axial direction of the knife bar is arranged on the knife bar, the cut cross section of the notch part is trapezoid, one side of the notch part is adjoined with the knife part to form a first slope, and the other side of the notch part is arranged in the middle part of the knife bar to form a second slope. The internally threaded turning tool has the characteristic of more reasonable structure, so that the knife cannot be easily damaged.
Description
Technical field
The invention belongs to field of machining, a kind of internal screw cutting tool particularly.
Background technology
Threading tool belongs to a kind of of cutting tool, is for carry out a kind of cutter of screw chasing processing on turning machining tool.Threading tool is divided into internal screw cutting tool and the large class of external screw cutting tool two, the clip type threading tool being widely used at present, its structure is divided into knife bar and blade two parts, and by being that blade is welded in to knife bar end, knife bar is square column type, at cutter spindle, make progress, its radial dimension is basic identical, and its thickness and width are basically identical, and this lathe tool is produced comparatively easy, and cost compare is low, be therefore widely adopted in turning processing operation.Although thereby knife bar has good firmness degree because of its consistent thickness and width, knife bar hardness is higher, is difficult for occurring deformation.But favourable have a fraud, no matter too high hardness can make knife bar when being subject to great cutting reaction force, cutter portion still keeps original position, and the cutter portion on knife bar of being now welded on is as easy as rolling off a log to come off from knife bar under impulsive contact force effect, encounters extreme case knife bar and even may be broken.Therefore, there is unreasonable structure in existing welded clip type threading tool, extremely easily causes the situation of tool damage to occur.
Summary of the invention
The object of this invention is to provide internal screw cutting tool, it has rational in infrastructure, and cutter is not allowed flimsy advantage.
To achieve these goals, the technical solution used in the present invention is as follows: a kind of internal screw cutting tool, the knife bar and the cutter portion that comprise integral forming structure, described cutter portion is positioned at the side of knife bar end, and described cutter portion is perpendicular to knife bar setting, it is characterized in that, on described knife bar, be provided with along the notch part forming to excision perpendicular to cutter spindle, the excision cross section of described notch part is trapezoidal, and a side of described notch part is close to described cutter portion to form the first inclined-plane, and opposite side is positioned at the middle part of described knife bar to form the second inclined-plane.
Preferably, the height of described notch part is not more than half of described knife bar height.
Preferably, described the first inclined-plane and cutter spindle between angle be greater than described the second inclined-plane and cutter spindle to angle.
Preferably, described the second inclined-plane and cutter spindle between angle be 45 °.
Preferably, described cutter portion outer face there is the 3rd inclined-plane.
Preferably, described the 3rd inclined-plane and cutter spindle to angle equal described the first inclined-plane and cutter spindle to angle.
Compared with prior art, internal screw cutting tool of the present invention, by on knife bar excision take form one excision cross section be trapezoidal notch part, two trapezoidal waists of this notch part lay respectively at cutter portion and knife bar middle part, form the first inclined-plane and the second inclined-plane, make to form between cutter portion and knife bar an arc structure, when when carrying out thread turning, if while causing greater impact power because of part tool setting portion, can there is small deformation in the knife bar with arcuate indentation portion, with impact power, cushion, thereby tool setting portion and knife bar play a protective role, avoid cutter portion to disconnect from knife bar, also can avoid knife bar because of stressed excessive being broken, so internal screw cutting tool of the present invention, its structure is more reasonable, cutter can not damaged easily.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure:
10, knife bar; 20, cutter portion; 30, notch part;
31, the first inclined-plane; 32, the second inclined-plane; 21, the 3rd inclined-plane.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, technical scheme of the present invention is described.
As shown in Figure 1, the present invention is a kind of internal screw cutting tool, the knife bar 10 and cutter portion 20 that comprise integral forming structure, described cutter portion 20 is positioned at the side of knife bar 10 ends, and described cutter portion 20 arranges perpendicular to knife bar 10, on described knife bar 10, be provided with along the notch part 30 forming perpendicular to knife bar 10 axially excises, the excision cross section of described notch part 30 is trapezoidal, and a side of described notch part 30 is close to described cutter portion 20 to form the first inclined-plane 31, and opposite side is positioned at the middle part of described knife bar 10 to form the second inclined-plane 32.Internal screw cutting tool of the present invention, by on knife bar 10 excision take form one excision cross section be trapezoidal notch part 30, two trapezoidal waists of this notch part 30 lay respectively at cutter portion 20 and knife bar 10 middle parts, form the first inclined-plane 31 and the second inclined-plane 32, make to form between cutter portion 20 and knife bar 10 an arc structure, when when carrying out thread turning, if while causing greater impact power because of part tool setting portion 20, can there is small deformation in the knife bar 10 with arcuate indentation portion 30, with impact power, cushion, thereby tool setting portion 20 and knife bar 10 play a protective role, avoid cutter portion 20 to disconnect from knife bar 10, also can avoid knife bar 10 because of stressed excessive being broken, so internal screw cutting tool of the present invention, its structure is more reasonable, cutter can not damaged easily.
When making 10 of knife bars, being impacted, deformation occur, avoid deformation compared with having influence on greatly machining accuracy, the height of described notch part 30 is not more than half of described knife bar 10 height, be half of the bow-shaped section height of knife bar 10 height that is greater than knife bar 10 integral body, make knife bar 10 can play certain cushioning effect, also can be in the stressed original position that keeps while not being large especially, only in impulsive force, reach and damage knife bar 10 in cutter situation deformation just occurs, can guarantee that cutter is not damaged also can guarantee machining accuracy.
For the arc cushioning effect that plays better that the shortcoming portion of knife bar 10 is formed, angle between described the first inclined-plane 31 and knife bar 10 are axial is greater than described the second inclined-plane 32 angle axial with knife bar 10, the gradient on the first inclined-plane 31 can make more greatly cutter portion 20 sharp, and the gradient on the second inclined-plane 32 is compared with the I arch portion of lengthened tool arbor 10 to a certain extent, with Promoting Layered Buffer effect.Further preferably, the angle between described the second inclined-plane 32 and knife bar 10 are axial is 45 °, makes knife bar 10 can reach optimum buffering effect.
In addition, described cutter portion 20 outer face there is the 3rd inclined-plane 21, the 3rd inclined-plane 21 and the first inclined-plane 31 are positioned at two offsides of cutter portion 20, make cutter portion 20 be cone tip shape, to improve cutter portion 20 sharpness, can accelerate turning speed, preferably, the axial angle of described the 3rd inclined-plane 21 and knife bar 10 equals described the first inclined-plane 31 angle axial with knife bar 10, the i.e. taper of cutter portion 20 formation rules, cutter portion 20 is stressed more steady, turning better effects if.
Internal screw cutting tool of the present invention, has more rational design feature, and cutter can not damaged easily.
The above is only better embodiment of the present invention, and the equivalence of doing according to structure, feature and principle described in patent claim of the present invention therefore all changes or modifies, and is included in patent claim of the present invention.
Claims (6)
1. an internal screw cutting tool, the knife bar (10) and cutter portion (20) that comprise integral forming structure, described cutter portion (20) is positioned at the side of knife bar (10) end, and described cutter portion (20) arranges perpendicular to knife bar (10), it is characterized in that, on described knife bar (10), be provided with along the notch part (30) forming perpendicular to knife bar (10) axially excises, the excision cross section of described notch part (30) is trapezoidal, and a side of described notch part (30) is close to described cutter portion (20) to form the first inclined-plane (31), opposite side is positioned at the middle part of described knife bar (10) to form the second inclined-plane (32).
2. internal screw cutting tool according to claim 1, is characterized in that, the height of described notch part (30) is not more than half of described knife bar (10) height.
3. internal screw cutting tool according to claim 2, is characterized in that, the angle between described the first inclined-plane (31) and knife bar (10) are axial is greater than described the second inclined-plane (32) angle axial with knife bar (10).
4. internal screw cutting tool according to claim 3, is characterized in that, the angle between described the second inclined-plane (32) and knife bar (10) are axial is 45 °.
5. according to the internal screw cutting tool described in claim 2 or 3, it is characterized in that, the outer face of described cutter portion (20) has the 3rd inclined-plane (21).
6. internal screw cutting tool according to claim 4, is characterized in that, the axial angle of described the 3rd inclined-plane (21) and knife bar (10) equals described the first inclined-plane (31) angle axial with knife bar (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539235.3A CN103551612A (en) | 2013-11-04 | 2013-11-04 | Internally threaded turning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539235.3A CN103551612A (en) | 2013-11-04 | 2013-11-04 | Internally threaded turning tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103551612A true CN103551612A (en) | 2014-02-05 |
Family
ID=50006059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310539235.3A Pending CN103551612A (en) | 2013-11-04 | 2013-11-04 | Internally threaded turning tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103551612A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312598A (en) * | 2014-07-30 | 2016-02-10 | 常州创伟工具制造有限公司 | Internal spiral boring cutter |
| CN107398606A (en) * | 2017-06-30 | 2017-11-28 | 武汉船用机械有限责任公司 | A kind of external threading cutter |
| CN109158719A (en) * | 2018-08-31 | 2019-01-08 | 哈尔滨工业大学（深圳） | A kind of electrochemical micromachining device of electrostatically actuated supplementary feeding |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1408205A (en) * | 1918-06-07 | 1922-02-28 | Jfanger Eduard | Tool for cutting screw threads in work pieces |
| DE20105764U1 (en) * | 2001-04-02 | 2001-10-11 | Hobe Max | Device for machining workpieces |
| US20020131831A1 (en) * | 2001-03-19 | 2002-09-19 | Hiroshi Shimomura | Tool for bore diameter work |
| CN201871832U (en) * | 2010-10-25 | 2011-06-22 | 常州埃特法斯工具有限公司 | Thread milling cutter |
| CN102451938A (en) * | 2010-10-22 | 2012-05-16 | 成都四威高科技产业园有限公司 | Numerical milling processing threaded cutter, and processing method thereof |
| CN102837086A (en) * | 2011-06-21 | 2012-12-26 | 无锡雨田精密工具有限公司 | Internal thread milling cutter |
| CN102837087A (en) * | 2011-06-23 | 2012-12-26 | 无锡雨田精密工具有限公司 | Double-edge internal thread milling cutter |
-
2013
- 2013-11-04 CN CN201310539235.3A patent/CN103551612A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1408205A (en) * | 1918-06-07 | 1922-02-28 | Jfanger Eduard | Tool for cutting screw threads in work pieces |
| US20020131831A1 (en) * | 2001-03-19 | 2002-09-19 | Hiroshi Shimomura | Tool for bore diameter work |
| DE20105764U1 (en) * | 2001-04-02 | 2001-10-11 | Hobe Max | Device for machining workpieces |
| CN102451938A (en) * | 2010-10-22 | 2012-05-16 | 成都四威高科技产业园有限公司 | Numerical milling processing threaded cutter, and processing method thereof |
| CN201871832U (en) * | 2010-10-25 | 2011-06-22 | 常州埃特法斯工具有限公司 | Thread milling cutter |
| CN102837086A (en) * | 2011-06-21 | 2012-12-26 | 无锡雨田精密工具有限公司 | Internal thread milling cutter |
| CN102837087A (en) * | 2011-06-23 | 2012-12-26 | 无锡雨田精密工具有限公司 | Double-edge internal thread milling cutter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312598A (en) * | 2014-07-30 | 2016-02-10 | 常州创伟工具制造有限公司 | Internal spiral boring cutter |
| CN107398606A (en) * | 2017-06-30 | 2017-11-28 | 武汉船用机械有限责任公司 | A kind of external threading cutter |
| CN109158719A (en) * | 2018-08-31 | 2019-01-08 | 哈尔滨工业大学（深圳） | A kind of electrochemical micromachining device of electrostatically actuated supplementary feeding |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140205 |