CN107335872A - The preparation method of screw thread pilot angle - Google Patents
The preparation method of screw thread pilot angle Download PDFInfo
- Publication number
- CN107335872A CN107335872A CN201710524244.3A CN201710524244A CN107335872A CN 107335872 A CN107335872 A CN 107335872A CN 201710524244 A CN201710524244 A CN 201710524244A CN 107335872 A CN107335872 A CN 107335872A
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- CN
- China
- Prior art keywords
- intersection point
- screw thread
- pilot angle
- size
- thread pilot
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G9/00—Working screws, bolt heads, or nuts in conjunction with thread cutting, e.g. slotting screw heads or shanks, removing burrs from screw heads or shanks; Finishing, e.g. polishing, any screw-thread
- B23G9/001—Working screws
- B23G9/004—Finishing screws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a kind of preparation method of screw thread pilot angle, comprise the following steps：The size and shape of screw thread pilot angle is determined, screw thread pilot angle is machined, it is characterised in that：The blank before rolling（Rolled thread footpath is cylindrical）With bar portion end face, according to maximum limit of size d3max and minimum limit of size d3min, make d3 × 30 ± 1 ° oblique line respectively, formation intersection point M corresponds to oblique line intersection point M ' ', intersection point N and corresponds to oblique line intersection point N '；Using two point circular arc graphing methods, ensure that slope is constant, make R circular arcs and the cylindrical d2 in rolled thread footpath tangent, the circular arc R intersected with rolled thread footpath bar portion front end face intersection point M, intersection point N, intersection point M, intersection point N turn into guiding R greatest limit and minimum limit of size scope with bar portion tangent Rmax, Rmin respectively.Solves the problems such as flanging burr after titanium alloy bolt, screw thread rolling, fold.
Description
Technical field
The invention belongs to the screw thread of titanium alloy material external screw thread rolling blank to guide manufacture field, relates in particular to one kind
The external screw thread roll forming screw thread guiding of the bolt, screw product of (TC4, Ti6Al4V, Ti80, TB8) equal-specification titanium alloy material
Angle processing technology.
Background technology
Regular screw threads, strengthened thread include metric system, two major classes made in Great Britain respectively.State, the external screw thread processing of inside and outside generally use
Two major classes are molded including machine plus (turning, grinding), rolling (twisting, rolling), during due to screw thread process, in screw thread rolled thread footpath bar portion
The all necessary chamfering of circle end face, this is in order to ensure that machine adds (turning, grinding), in spiral shell when rolling (twisting, rolling) is molded
The interference that screws that flanging burr impacts threaded connection is formed at line guiding, therefore in corresponding metric system, made in Great Britain common and reinforcement
In the standard of screw thread, all define such as regular screw threads spacing, head and the tail standard, such as common regular screw threads ending, shoulder are away from, withdrawing
Groove, guiding and chamfering (HB5829-1983), MJ screw threads head and the tail (GJB52-1985), inch screw thread standard MIL 8879 or AS
8879 also define the requirement of screw thread pilot angle in thread standard.
Publication No. CN103331576 Chinese patent, a kind of titanium alloy annulus was disclosed on 06 14th, 2013
Processing method, titanium alloy blank raw material is processed into by cylinder using lathe；It will be emptied among cylinder, form annular；Will
Annular material is sent into Digit Control Machine Tool；By the punch process mode of Digit Control Machine Tool, input parameter, thin-wall circular annular titanium is processed into
Alloy workpiece；Workpiece is put into grinding machine, polished, forms the finished product of titanium alloy annulus.The patent is not related to
The processing of titanium alloy screw thread pilot angle, it must be processed according to HB5829-1983, GJB52-1985 rolled thread footpath is cylindrical before rolled thread
The main reason for pilot angle, mainly avoids producing flanging burr in leading end after rolled thread, is easy to the installation of screw thread pair and suitable
Freely screw, therefore pilot angle must be processed before rolling.Titanium alloy material is different, even if machined chamfering as requested, or even adds
Greatly, burr or folding can be produced by extending chamfering length.
The content of the invention
It is an object of the invention to overcome disadvantages mentioned above after a kind of solution titanium alloy bolt, screw thread rolling are provided
The method of the problems such as flanging burr, folding.
The purpose of the present invention and solves its technical problem underlying using following technical scheme to realize：
A kind of preparation method of screw thread pilot angle of the present invention, comprises the following steps：
The size and shape of screw thread pilot angle is determined,
Screw thread pilot angle is machined,
It is characterized in that：By chamfer machining at screw thread guiding into cylindrical tangent with rolled thread footpath, and the round and smooth mistake that slope is constant
The R arc structures crossed.
The preparation method of above-mentioned screw thread pilot angle, wherein：According to HB5829-1983, GJB52-1985 and MIL
The specific requirement of 8879 (AS 8879) screw thread pilot angles, blank (rolled thread footpath is cylindrical) and bar portion end face before rolling, according to maximum pole
Size d3max and minimum limit of size d3min is limited, makees d3 × 30 ± 1 ° oblique line respectively, intersection point M is formed and corresponds to oblique line intersection point M ",
Intersection point N corresponds to oblique line intersection point N '.
The preparation method of above-mentioned screw thread pilot angle, wherein：Using two point circular arc graphing methods, ensure that slope is constant, justify R
Arc and the cylindrical d2 in rolled thread footpath are tangent, the circular arc R intersected with rolled thread footpath bar portion front end face intersection point M, intersection point N, intersection point M, intersection point N difference
Turn into guiding R greatest limit and minimum limit of size scope with bar portion tangent Rmax, Rmin.
The preparation method of above-mentioned screw thread pilot angle, wherein：It is greatest limit and minimum limit of size model in Rmax, Rmin
Enclose interior be machined.
The present invention has clear advantage and beneficial effect compared with prior art.From above technical scheme, with showing
There is technology to compare, now by rolling blank screw thread guiding according to the (AS of HB5829-1983, GJB52-1985 and MIL 8879
8879) pilot angle requirement, chamfering is changed to, and slope constant transition arc R structure cylindrical tangent with rolled thread footpath, can effectively be changed
Kind titanium alloy plasticity is poor, material flowability difference and caused by flanging burr or the problem of fold at screw thread guiding.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings, wherein:
Fig. 1 is the screw thread pilot angle each point distribution schematic diagram of the present invention.
Embodiment：
According to the specific requirement of HB5829-1983, GJB52-1985 and MIL 8879 (AS 8879) screw thread pilot angle,
Blank (rolled thread footpath is cylindrical) and bar portion end face before rolling, according to maximum limit of size d3max and minimum limit of size d3min, divide
Do not make d3 × 30 ± 1 ° oblique line, formation intersection point M is corresponded to oblique line intersection point M ", intersection point N and corresponds to oblique line intersection point N ', made using two point circular arcs
Figure method, ensure that slope is constant, R circular arcs should be tangent with the cylindrical d2 in rolled thread footpath, intersects with rolled thread footpath bar portion front end face intersection point M, intersection point N
Circular arc R, intersection point M, intersection point N respectively with bar portion tangent Rmax, Rmin turn into guiding R greatest limit and least limit chi
Very little scope.It is to be machined in the range of greatest limit and the minimum limit of size in Rmax, Rmin.
R is guided before the HB5829-1983 regular screw threads rollings of table 1
R is guided before the GJB52-1985MJ strengthened thread rollings of table 2
R is guided before the unified rolled threads of the MIL 8879/AS 8879 of table 3
The above described is only a preferred embodiment of the present invention, not making any formal limitation to the present invention, appoint
Without departing from technical solution of the present invention content, what the technical spirit according to the present invention was made to above example any simply repaiies for what
Change, equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (4)
1. a kind of preparation method of screw thread pilot angle, comprises the following steps：
The size and shape of screw thread pilot angle is determined,
Screw thread pilot angle is machined,
It is characterized in that：By chamfer machining at screw thread guiding into cylindrical tangent with rolled thread footpath, and the R of the constant rounding off of slope
Arc structure.
2. the preparation method of screw thread pilot angle as claimed in claim 1, it is characterised in that：According to HB5829-1983, GJB52-
1985 and MIL 8879（AS 8879）The specific requirement of screw thread pilot angle, the blank before rolling（Rolled thread footpath is cylindrical）With bar portion end
Face, according to maximum limit of size d3max and minimum limit of size d3min, make d3 × 30 ± 1 ° oblique line respectively, form M pairs of intersection point
Oblique line intersection point M ' ', intersection point N is answered to correspond to oblique line intersection point N '.
3. the preparation method of screw thread pilot angle as claimed in claim 2, it is characterised in that：Using two point circular arc graphing methods, ensure
Slope is constant, makes R circular arcs and the cylindrical d2 in rolled thread footpath tangent, the circular arc R intersected with rolled thread footpath bar portion front end face intersection point M, intersection point N,
Intersection point M, intersection point N turn into guiding R greatest limit and minimum limit of size scope with bar portion tangent Rmax, Rmin respectively.
4. the preparation method of screw thread pilot angle as claimed in claim 3, it is characterised in that：Rmax, Rmin be greatest limit with
It is machined in the range of the minimum limit of size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710524244.3A CN107335872B (en) | 2017-06-30 | 2017-06-30 | The production method of screw thread pilot angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710524244.3A CN107335872B (en) | 2017-06-30 | 2017-06-30 | The production method of screw thread pilot angle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107335872A true CN107335872A (en) | 2017-11-10 |
| CN107335872B CN107335872B (en) | 2019-11-05 |
Family
ID=60218311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710524244.3A Active CN107335872B (en) | 2017-06-30 | 2017-06-30 | The production method of screw thread pilot angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107335872B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2072456U (en) * | 1990-08-22 | 1991-03-06 | 李庆波 | Knee end face and fusion treating device |
| CN2209235Y (en) * | 1993-09-08 | 1995-10-04 | 王庆堂 | Gradual change screw thread tooth type guide wimble |
| CN1159777A (en) * | 1994-09-06 | 1997-09-17 | 梅基诺公司 | Improved integral boring and threading tool and method |
| CN1754641A (en) * | 2004-09-29 | 2006-04-05 | 山特维克知识产权股份有限公司 | Screw thread cutting tool |
| CN201442182U (en) * | 2009-06-11 | 2010-04-28 | 泰安市金港机械制造有限责任公司 | Pipe casting clamp for milling machine |
| KR100991201B1 (en) * | 2010-08-02 | 2010-11-01 | 이수연 | Elbow clamping equipment for elbow pipe automatic welding equipment |
| CN201900343U (en) * | 2010-11-22 | 2011-07-20 | 泰豪科技股份有限公司 | Automatic screw die device |
| CN203542127U (en) * | 2013-09-27 | 2014-04-16 | 南通中能机械制造有限公司 | Two-shoulder arc blade root milling tool clamp for diamond-shaped blade |
| CN104289940A (en) * | 2014-10-21 | 2015-01-21 | 江苏万盛铸造有限公司 | Fixture special for machining of end face of special bend |
| CN104308604A (en) * | 2014-10-21 | 2015-01-28 | 江苏万盛铸造有限公司 | Fixture for machining of end faces of bend |
-
2017
- 2017-06-30 CN CN201710524244.3A patent/CN107335872B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2072456U (en) * | 1990-08-22 | 1991-03-06 | 李庆波 | Knee end face and fusion treating device |
| CN2209235Y (en) * | 1993-09-08 | 1995-10-04 | 王庆堂 | Gradual change screw thread tooth type guide wimble |
| CN1159777A (en) * | 1994-09-06 | 1997-09-17 | 梅基诺公司 | Improved integral boring and threading tool and method |
| CN1754641A (en) * | 2004-09-29 | 2006-04-05 | 山特维克知识产权股份有限公司 | Screw thread cutting tool |
| CN201442182U (en) * | 2009-06-11 | 2010-04-28 | 泰安市金港机械制造有限责任公司 | Pipe casting clamp for milling machine |
| KR100991201B1 (en) * | 2010-08-02 | 2010-11-01 | 이수연 | Elbow clamping equipment for elbow pipe automatic welding equipment |
| CN201900343U (en) * | 2010-11-22 | 2011-07-20 | 泰豪科技股份有限公司 | Automatic screw die device |
| CN203542127U (en) * | 2013-09-27 | 2014-04-16 | 南通中能机械制造有限公司 | Two-shoulder arc blade root milling tool clamp for diamond-shaped blade |
| CN104289940A (en) * | 2014-10-21 | 2015-01-21 | 江苏万盛铸造有限公司 | Fixture special for machining of end face of special bend |
| CN104308604A (en) * | 2014-10-21 | 2015-01-28 | 江苏万盛铸造有限公司 | Fixture for machining of end faces of bend |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107335872B (en) | 2019-11-05 |
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