CN107335872B - The production method of screw thread pilot angle - Google Patents
The production method of screw thread pilot angle Download PDFInfo
- Publication number
- CN107335872B CN107335872B CN201710524244.3A CN201710524244A CN107335872B CN 107335872 B CN107335872 B CN 107335872B CN 201710524244 A CN201710524244 A CN 201710524244A CN 107335872 B CN107335872 B CN 107335872B
- Authority
- CN
- China
- Prior art keywords
- intersection point
- screw thread
- pilot angle
- size
- bar 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.)
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000003754 machining Methods 0.000 claims description 2
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 10
- 239000000956 alloy Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a kind of production methods of screw thread pilot angle, comprise steps of determining that the size and shape of screw thread pilot angle, screw thread pilot angle is machined, it is characterized by: blank (rolled thread diameter outer circle) and bar portion end face before rolling, according to maximum limit of size d3max and minimum limit of size d3min, make d3 × 30 ± 1 ° oblique line respectively, forms intersection point M and correspond to oblique line intersection point M ' ', intersection point N corresponds to oblique line intersection point N '；Using two point circular arc graphing methods, guarantee that slope is constant, keep R circular arc and rolled thread diameter outer circle d2 tangent, the circular arc R intersected with rolled thread diameter bar portion front end face intersection point M, intersection point N, intersection point M, intersection point N become the greatest limit and minimum limit of size range of guidance R with bar portion tangent Rmax, Rmin respectively.Solve titanium alloy bolt, screw thread rolling after flanging burr, fold the problems such as.
Description
Technical field
The invention belongs to the screw threads of titanium alloy material external screw thread rolling blank to guide manufacture field, relate in particular to one kind
The external screw thread roll forming screw thread guidance of the bolt, screw product of (TC4, Ti6Al4V, Ti80, TB8) equal-specification titanium alloy material
Angle processing technology.
Background technique
Regular screw threads, strengthened thread respectively include metric system, two major class made in Great Britain.State, the inside and outside external screw thread processing generallyd use
Two major classes are formed including machine plus (turning, grinding), rolling (twisting, rolling), when due to screw thread process, in screw thread rolled thread diameter bar portion
Circle end face must all process chamfering, this is in order to guarantee that machine adds (turning, grinding), in spiral shell when rolling (twisting, rolling) forms
The interference that screws that flanging burr impacts threaded connection is formed at line guidance, therefore in corresponding metric system, made in Great Britain common and reinforcement
It in the standard of screw thread, all defines such as regular screw threads spacing, head and the tail standard, such as common regular screw threads ending, shoulder are away from, withdrawing
Slot, guidance and chamfering (HB5829-1983), MJ screw thread 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.
The Chinese patent of Publication No. CN103331576 disclosed a kind of titanium alloy annulus on 06 14th, 2013
Titanium alloy blank raw material is processed into cylindrical body using lathe by processing method；It will be emptied among cylindrical body, form circular ring shape；It will
Circular ring shape material is sent into numerically-controlled machine tool；By the punch process mode of numerically-controlled machine tool, parameter is inputted, thin-wall circular annular titanium is processed into
Alloy workpiece；Workpiece is put into grinding machine, is polished, the finished product of titanium alloy annulus is formed.The patent is not related to
The processing of titanium alloy screw thread pilot angle must be processed in rolled thread diameter outer circle according to HB5829-1983, GJB52-1985 before rolled thread
The main reason for pilot angle, mainly avoids generating flanging burr in leading end after rolled thread, convenient for the installation of screw thread pair and suitable
It freely screws, 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 generated by extending chamfering length.
Summary 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.
It the purpose of the present invention and solves its technical problem underlying and adopts the following technical solutions to realize:
A kind of production method of screw thread pilot angle of the invention, comprising the following steps:
Determine the size and shape of screw thread pilot angle,
Screw thread pilot angle is machined,
It is characterized by: by chamfer machining at screw thread guidance at tangent with rolled thread diameter outer circle.
The production method of above-mentioned screw thread pilot angle, in which: according to HB5829-1983, GJB52-1985 and MIL
The specific requirement of 8879 (AS 8879) screw thread pilot angles, blank (rolled thread diameter outer circle) 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 production method of above-mentioned screw thread pilot angle, in which: use two point circular arc graphing methods, guarantee that slope is constant, make R circle
Arc and rolled thread diameter outer circle d2 are tangent, the circular arc R intersected with rolled thread diameter bar portion front end face intersection point M, intersection point N, intersection point M, intersection point N difference
Become the greatest limit and minimum limit of size range of guidance R with bar portion tangent Rmax, Rmin.
The production method of above-mentioned screw thread pilot angle, in which: Rmax, Rmin be greatest limit and minimum limit of size model
Enclose interior be machined.
The present invention has obvious advantages and beneficial effects compared with the existing technology.From the above technical scheme, and now
There is technology to compare, now by rolling blank screw thread guidance according to 8879 (AS of HB5829-1983, GJB52-1985 and MIL
8879) chamfering is changed to, and slope constant transition arc R structure tangent with rolled thread diameter outer circle, can effectively changed by pilot angle requirement
Kind titanium alloy plasticity is poor, material flowability difference and caused by flanging burr or the problem of fold at screw thread guidance.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is screw thread pilot angle each point distribution schematic diagram of the invention.
Specific embodiment:
According to the specific requirement of HB5829-1983, GJB52-1985 and MIL 8879 (AS 8879) screw thread pilot angle,
Blank (rolled thread diameter outer circle) and bar portion end face before rolling are divided according to maximum limit of size d3max and minimum limit of size d3min
Do not make d3 × 30 ± 1 ° oblique line, form intersection point M and correspond to oblique line intersection point M ', intersection point N corresponds to oblique line intersection point N ', is made using two point circular arcs
Figure method guarantees that slope is constant, and R circular arc should be tangent with rolled thread diameter outer circle d2, intersects with rolled thread diameter 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 become guidance R greatest limit and the minimum limit of size
Range.It is to be machined within the scope of greatest limit and the minimum limit of size in Rmax, Rmin.
R is guided before 1 HB5829-1983 regular screw threads rolling of table
R is guided before 2 GJB52-1985MJ strengthened thread rolling of table
R is guided before the unified rolled thread of 3 MIL 8879/AS 8879 of table
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form, appoint
What is to the above embodiments according to the technical essence of the invention any simply to repair without departing from technical solution of the present invention content
Change, equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (2)
1. a kind of production method of screw thread pilot angle, comprising the following steps:
Determine the size and shape of screw thread pilot angle,
Screw thread pilot angle is machined,
It is characterized by: by chamfer machining at screw thread guidance at tangent with rolled thread diameter outer circle, and the R of the constant rounding off of slope
Arc structure, according to the specific requirement of 8879 screw thread pilot angle of HB5829-1983, GJB52-1985 and MIL 8879 or AS,
Blank and bar portion end face before rolling, according to maximum limit of size d3max and minimum limit of size d3min, make respectively d3 × 30 ±
1 ° of oblique line forms intersection point M and corresponds to oblique line intersection point M ', and intersection point N corresponds to oblique line intersection point N ', using two point circular arc graphing methods, guarantees oblique
Rate is constant, keeps R circular arc and rolled thread diameter outer circle d2 tangent, the circular arc R intersected with rolled thread diameter bar portion front end face intersection point M, intersection point N, hands over
Point M, intersection point N become the greatest limit and minimum limit of size range of guidance R with bar portion tangent Rmax, Rmin respectively.
2. the production method of screw thread pilot angle as described in claim 1, it is characterised in that: Rmax, Rmin be greatest limit with
It is machined within the scope 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 CN107335872A (en) | 2017-11-10 |
| CN107335872B true 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 (7)
| 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 |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2209235Y (en) * | 1993-09-08 | 1995-10-04 | 王庆堂 | Gradual change screw thread tooth type guide wimble |
| US5678962A (en) * | 1994-09-06 | 1997-10-21 | Makino Inc. | Integral boring and threading tool and method |
| DE102004047839A1 (en) * | 2004-09-29 | 2006-03-30 | Sandvik Intellectual Property Hb | Threading Tool |
-
2017
- 2017-06-30 CN CN201710524244.3A patent/CN107335872B/en active Active
Patent Citations (7)
| 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 |
| 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 |
|---|---|
| CN107335872A (en) | 2017-11-10 |
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