CN101893024A - Method for producing self-locking moment on external thread and self-locking threaded shaft - Google Patents
Method for producing self-locking moment on external thread and self-locking threaded shaft Download PDFInfo
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- CN101893024A CN101893024A CN 201010178120 CN201010178120A CN101893024A CN 101893024 A CN101893024 A CN 101893024A CN 201010178120 CN201010178120 CN 201010178120 CN 201010178120 A CN201010178120 A CN 201010178120A CN 101893024 A CN101893024 A CN 101893024A
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- self
- locking
- shrinkage pool
- outside thread
- external thread
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Abstract
The invention discloses a method for producing self-locking moment on an external thread and a self-locking threaded shaft. The method comprises the following steps of: forming a concave hole on at one end of a shaft part, on which the external thread is formed; performing outward stamping on the cylindrical inner wall of the concave hole along a radial direction to form a sunken deformation pit; and allowing the external thread on the outer surface at a cylindrical position of the concave hole to partially deform through the sunken deformation pit, and allowing the external thread to project outwards, so that the self-locking moment can be produced when the shaft part provided with the external thread is connected with a connected part provided with an internal threaded hole. The method has the advantages of achieving a self-locking function without a self-locking nut, along with compact structure and firm and reliable connection of connecting pair. The invention is particularly suitable for an occasion which requires compact structure and high joint anti-loosening performance and does not allow the deformation of an internal thread or cannot allow the internal thread to deform.
Description
Technical field
The present invention relates to a kind of method and self-locking threaded shaft that on outside thread, produces self-locking moment, belong to the self-locking technical field that is threaded.
Background technique
At present, usually the self-locking of used all kinds of parts is threaded, all be on nut part, to adopt self-locking structure to carry out locking processing after axle links to each other with the hole, when the structural requirement compactness, there is not redundant space, when requiring the joint that good anti-loosening property is arranged again, or because the part that links to each other with axle, though interior threaded hole is arranged, but not allowing internal thread to produce distortion, its structure maybe can't not make internal thread produce distortion, these situations all can not be selected the anti-loose structure of self-locking nut formula for use.Therefore the existing main employing self-locking nut mode of carrying out locking processing still can not satisfy the needs of use.
Summary of the invention
The objective of the invention is to, a kind of auxiliary connection compact structure, firm and reliable connection are provided and do not need self-locking nut can reach the method and the self-locking threaded shaft that on outside thread, produce self-locking moment of auto-lock function, thereby overcome the deficiencies in the prior art.
Technological scheme of the present invention: the present invention realizes like this, a kind of method that produces self-locking moment on outside thread of the present invention is to produce shrinkage pool earlier in the end that axial workpiece is provided with outside thread one end, on the circle tube inner wall of shrinkage pool, radially outwards carry out punching press then and produce the depressed deformation hole, make outside thread on the shrinkage pool cylindrical shape place outer surface produce local deformation and to outer lug by depressed deformation hole, can make like this to be provided with externally threaded axial workpiece generation self-locking moment the time with being connected part and being connected of band interior threaded hole.
A kind of self-locking threaded shaft that the method according to this invention is made, comprise and be provided with externally threaded axial workpiece, the end that is provided with outside thread one end at axial workpiece is provided with shrinkage pool, be provided with depressed deformation hole on the columnar inwall of shrinkage pool, the outside thread on the outer surface of the shrinkage pool at place, depressed deformation hole is outside local crowning.
Be evenly distributed with 2～8 depressed deformations hole at the columnar inwall of shrinkage pool upper edge circumference, and the outside thread on the outer surface of the shrinkage pool at each place, depressed deformation hole is outside local crowning.
On the columnar inwall of shrinkage pool, be provided with toroidal cavity, and the depressed deformation hole is located in the toroidal cavity.
Owing to adopted technique scheme, the present invention takes circumferentially to produce the outside protruding structure in 2～8 places at outside thread on thread spindle, make the outside thread generation screw thread distortion among a small circle of thread spindle, when the distortion after outside thread by axle be screwed into the band interior threaded hole be connected part the time, the internal thread that is connected part is tightly embraced outside thread by the thread spindle of slight deformation, thereby make the joint of internal and external screw thread produce locking torque, the part that is connected of band interior threaded hole firmly is connected with thread spindle, can play good locking effect like this, thereby realize auto-lock function.Therefore, the present invention compared with prior art, the present invention not only has the advantage that does not need self-locking nut can reach auto-lock function, but also has the advantage of auxiliary connection compact structure, firm and reliable connection.The present invention is particularly suitable for both having required compact structure when the connection between part, requires the joint that good anti-loosening property is arranged again and do not allow internal thread to produce distortion the occasion of internal thread generation distortion is used.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the local structure for amplifying schematic representation of the A portion of Fig. 1;
The structural representation that Fig. 3 is a self-locking threaded shaft of the present invention when being connected part and being connected.
Description of reference numerals: the outside thread of 1-axial workpiece, the 2-shrinkage pool, 3-depressed deformation hole, the 4-toroidal cavity, 5-is connected part.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Embodiments of the invention: a kind of method that produces self-locking moment on outside thread of the present invention is to produce shrinkage pool 2 earlier in the end that axial workpiece is provided with outside thread 1 one ends, on the circle tube inner wall of shrinkage pool 2, radially outwards carry out punching press then and produce depressed deformation hole 3, make outside thread 1 on the shrinkage pool 2 cylindrical shape place outer surfaces produce local deformation and to outer lug (as shown in Figure 2) by depressed deformation hole 3, can make the axial workpiece that is provided with outside thread 1 generation self-locking moment (as shown in Figure 3) with being connected part 5 and being connected of band interior threaded hole the time like this.
The self-locking threaded shaft of making according to method of the present invention can be made on the existing axial workpiece basis that is provided with outside thread 1, during making, shrinkage pool 2 is produced in the end that is provided with outside thread 1 one ends at axial workpiece, the degree of depth of shrinkage pool 2 can need and definite to the distance of shaft end according to the central point that depressed deformation hole 3 is set by making or using, then on shrinkage pool 2 columnar inwalls, radially outwards adopt the mode of punching press or impact, and evenly distribute by circumference and to produce 2～8 depressed deformations holes 3, can make each depressed deformation cheat outside thread 1 outside local crowning (as shown in Figure 2) on the outer surface of shrinkage pool 2 at 3 places like this.
When the diameter of the thread spindle of the axial workpiece that is provided with outside thread 1 is bigger, for easy to make, can on shrinkage pool 2 columnar inwalls, produce 1～3 toroidal cavity 4, and then in toroidal cavity 4 by even distribution and adopt punching press or the mode of impact is produced depressed deformation hole 3, make each depressed deformation cheat outside thread 1 outside local crowning on the outer surface of shrinkage pool 2 at 3 places (as depicted in figs. 1 and 2).
Claims (4)
1. method that on outside thread, produces self-locking moment, it is characterized in that: the end that is provided with outside thread (1) one end at axial workpiece is produced shrinkage pool (2) earlier, on the circle tube inner wall of shrinkage pool (2), radially outwards carry out punching press then and produce depressed deformation hole (3), make the outside thread (1) on shrinkage pool (2) the cylindrical shape place outer surface produce local deformation and, can make the axial workpiece that is provided with outside thread (1) produce self-locking moment when being connected like this by depressed deformation hole (3) at the part (5) that is connected with the band interior threaded hole to outer lug.
2. self-locking threaded shaft, comprise the axial workpiece that is provided with outside thread (1), it is characterized in that: the end that is provided with outside thread (1) one end at axial workpiece is provided with shrinkage pool (2), be provided with depressed deformation hole (3) on the columnar inwall of shrinkage pool (2), the outside thread (1) on the outer surface of the shrinkage pool of locating in depressed deformation hole (3) (2) is outside local crowning.
3. self-locking threaded shaft according to claim 2, it is characterized in that: be evenly distributed with 2～8 depressed deformations holes (3) at the columnar inwall of shrinkage pool (2) upper edge circumference, and the outside thread (1) on the outer surface of the shrinkage pool of locating in each depressed deformation hole (3) (2) is outside local crowning.
4. according to claim 2 or 3 described self-locking threaded shafts, it is characterized in that: on the columnar inwall of shrinkage pool (2), be provided with toroidal cavity (4), and depressed deformation hole (3) is located in the toroidal cavity (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010178120 CN101893024A (en) | 2010-05-20 | 2010-05-20 | Method for producing self-locking moment on external thread and self-locking threaded shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010178120 CN101893024A (en) | 2010-05-20 | 2010-05-20 | Method for producing self-locking moment on external thread and self-locking threaded shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101893024A true CN101893024A (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010178120 Pending CN101893024A (en) | 2010-05-20 | 2010-05-20 | Method for producing self-locking moment on external thread and self-locking threaded shaft |
Country Status (1)
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| CN (1) | CN101893024A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013547A (en) * | 2017-05-17 | 2017-08-04 | 贵州航天精工制造有限公司 | A kind of part without twisting self-locking method and without twisting structure self-locking thread insert |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2856617A (en) * | 1956-04-17 | 1958-10-21 | Nat Machine Products Company | Method of making self-locking valve lash adjusting screws |
| US4090544A (en) * | 1972-09-13 | 1978-05-23 | Long-Lok Fasteners Corporation | All metal self-locking screw fastener |
| US4983084A (en) * | 1989-09-26 | 1991-01-08 | Northrop Corporation | Double locked threaded fastener |
| CN101317016A (en) * | 2005-11-18 | 2008-12-03 | 户津胜行 | Slack preventive fastener for screw tool, and method and device for manufacturing the same |
| CN201671934U (en) * | 2010-05-20 | 2010-12-15 | 贵州航天精工制造有限公司 | Self-locking threaded shaft |
-
2010
- 2010-05-20 CN CN 201010178120 patent/CN101893024A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2856617A (en) * | 1956-04-17 | 1958-10-21 | Nat Machine Products Company | Method of making self-locking valve lash adjusting screws |
| US4090544A (en) * | 1972-09-13 | 1978-05-23 | Long-Lok Fasteners Corporation | All metal self-locking screw fastener |
| US4983084A (en) * | 1989-09-26 | 1991-01-08 | Northrop Corporation | Double locked threaded fastener |
| CN101317016A (en) * | 2005-11-18 | 2008-12-03 | 户津胜行 | Slack preventive fastener for screw tool, and method and device for manufacturing the same |
| CN201671934U (en) * | 2010-05-20 | 2010-12-15 | 贵州航天精工制造有限公司 | Self-locking threaded shaft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013547A (en) * | 2017-05-17 | 2017-08-04 | 贵州航天精工制造有限公司 | A kind of part without twisting self-locking method and without twisting structure self-locking thread insert |
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Application publication date: 20101124 |