CN205271060U - Instrument is reinforceed to screw thread - Google Patents
Instrument is reinforceed to screw thread Download PDFInfo
- Publication number
- CN205271060U CN205271060U CN201520958557.6U CN201520958557U CN205271060U CN 205271060 U CN205271060 U CN 205271060U CN 201520958557 U CN201520958557 U CN 201520958557U CN 205271060 U CN205271060 U CN 205271060U
- Authority
- CN
- China
- Prior art keywords
- screw thread
- instrument
- supporting fork
- screw
- supporting
- 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.)
- Expired - Fee Related
Links
- 238000005096 rolling process Methods 0.000 claims description 15
- 238000005728 strengthening Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 230000003746 surface roughness Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002929 anti-fatigue Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Forging (AREA)
Abstract
The utility model relates to an instrument is reinforceed to screw thread is equipped with the recess at the tip that supports the handle, and the tip of supporting fork inserts in the recess to be connected through screw and support handle, be U type auricle structure in the outer end of supporting fork, the last roll extrusion axle of press wheel passes through bearing and supporting fork swing joint. Adopt and to reinforce instrument processing screw thread surface, reduced the threaded surface roughness, improved screw thread intensity, prolonged life, improved machining efficiency simultaneously.
Description
Technical field
The utility model relates to a kind of screw thread strengthening instrument, extrudes for double thread surface, it is to increase the antifatigue of thread surface, stress corrosion resistant ability.
Background technology
Certain aircraft key position joint bolt, bearing capacity ratio is bigger, and stress easily concentrates, at first, rolling screw thread after design alternative thermal treatment, is not destroyed in the process that the grain pattern of its material of rolling screw thread itself is processed in viscous deformation completely, thus performance in tensile strength has risen to maximum completely after outside screw is shaping, but due to the problem such as production unit and technology, cannot realize, therefore car large gauge MJ screw thread is selected in design.
MJ screw thread is also known as making high strength screw thread or strengthened thread, and relative to metric system regular screw threads (being called for short M screw thread), MJ screw thread has the features such as circular arc at the bottom of the tooth that have employed relatively large radius at the bottom of high dimensional accuracy, outside screw tooth, and the fatigue strength that is threaded strengthens greatly. But in turning process, destroying the crystalline structure of material itself, screw thread supporting capacity and tensile strength can reduce, in order to make up this defect, it is necessary to double thread surface carries out finish rolling hardening, extruding can effectively increase the hardness of material, it is to increase its tensile strength.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of screw thread strengthening instrument, adopt this strengthening tool processes thread outer surface, reduce thread surface roughness, it is to increase screw strength, extends work-ing life, improves working (machining) efficiency simultaneously.
For overcoming the above problems, concrete technical scheme of the present utility model is as follows: a kind of screw thread strengthening instrument, is provided with groove in the end of support shank, and the end of supporting fork is inserted in groove, and is connected with support shank by screw; The outer end pitched in supporting is U-shaped auricle structure, and the rolling shaft on rolling wheel is flexibly connected with supporting fork by bearing.
The excircle of described rolling wheel is horn structure, and two faces at composition point angle are 58 �� of angles, and sharp corner is the fillet of R0.33 �� 0.02mm.
Screw thread strengthening instrument uses very convenient, improves processing quality, it is to increase part quality product, it is to increase part antifatigue, stress corrosion resistant ability.
Rolling wheel adopts horn structure, for coordinating bolt profile, makes roll extrusion better effects if.
Accompanying drawing explanation
Fig. 1 is the front view of screw thread strengthening instrument.
Fig. 2 is the vertical view cutaway drawing of screw thread strengthening instrument.
Fig. 3 is rolling wheel point angle enlarged view.
Embodiment
As depicted in figs. 1 and 2, a kind of screw thread strengthening instrument, is provided with groove in the end of support shank (6), and the end of supporting fork (4) is inserted in groove, and is connected with support shank (6) by screw (5); The outer end pitching (4) in supporting is U-shaped auricle structure, and the rolling shaft (2) on rolling wheel (1) is flexibly connected by bearing (3) and supporting fork (4).
As shown in Figure 3, the excircle of described rolling wheel (1) is horn structure, and two faces at composition point angle are 58 �� of angles, and sharp corner is the fillet of R0.33 �� 0.02mm.
During use, screw thread being strengthened instrument and is arranged on the knife rest of lathe, by the cylindrical of rolling wheel (1) point angle and screw thread positive, screw thread rotation moves, and can realize screw thread strengthening.
Claims (2)
1. a screw thread strengthening instrument, it is characterised in that: being provided with groove in the end of support shank (6), the end of supporting fork (4) is inserted in groove, and is connected with support shank (6) by screw (5); The outer end pitching (4) in supporting is U-shaped auricle structure, and the rolling shaft (2) on rolling wheel (1) is flexibly connected by bearing (3) and supporting fork (4).
2. screw thread strengthening instrument as claimed in claim 1, it is characterised in that: the excircle of described rolling wheel (1) is horn structure, and two faces at composition point angle are 58 �� of angles, and sharp corner is the fillet of R0.33 �� 0.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958557.6U CN205271060U (en) | 2015-11-27 | 2015-11-27 | Instrument is reinforceed to screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958557.6U CN205271060U (en) | 2015-11-27 | 2015-11-27 | Instrument is reinforceed to screw thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205271060U true CN205271060U (en) | 2016-06-01 |
Family
ID=56055681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520958557.6U Expired - Fee Related CN205271060U (en) | 2015-11-27 | 2015-11-27 | Instrument is reinforceed to screw thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205271060U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925699A (en) * | 2017-04-27 | 2017-07-07 | 沈阳飞机工业（集团）有限公司 | One kind is used for MJ external screw thread teeth bottom circular arc rolling device |
-
2015
- 2015-11-27 CN CN201520958557.6U patent/CN205271060U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925699A (en) * | 2017-04-27 | 2017-07-07 | 沈阳飞机工业（集团）有限公司 | One kind is used for MJ external screw thread teeth bottom circular arc rolling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20201127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |