CN101708516B - Screw-type straightening method for tap bolt of slender rod - Google Patents
Screw-type straightening method for tap bolt of slender rod Download PDFInfo
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- CN101708516B CN101708516B CN2009102731975A CN200910273197A CN101708516B CN 101708516 B CN101708516 B CN 101708516B CN 2009102731975 A CN2009102731975 A CN 2009102731975A CN 200910273197 A CN200910273197 A CN 200910273197A CN 101708516 B CN101708516 B CN 101708516B
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- tap bolt
- slender rod
- bar portion
- straightening
- alignment
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Abstract
The invention relates to a screw-type straightening method for a tap bolt of a slender rod, which comprises a single spiral curve straightening roller wheel, an auxiliary roller wheel and a supporting block, wherein the straightening roller wheel is in a single spiral curve type, the straightening roller wheel and the auxiliary roller wheel are arranged on a parallel rotating shaft in turn, and the supporting block is arranged between the straightening roller wheel and the auxiliary roller wheel. During the straightening process, only a rod part of the tap bolt of the slender rod is placed on the supporting block and the rod part of the tap bolt of the slender rod rotates in a negative direction under the action of frictional force, the rod part is straightened by rolling, and until the surface of the rod part of a component is polished and spotless, only slight visible uniform spiral traces exist. The screw-type straightening method can straighten the rod part of the tap bolt of the slender rod comprehensively without blind spots, has no stress concentration in the straightening process, cannot generate potential safety hazards such as micro cracks, and has a good straightening effect.
Description
Technical field
The present invention relates to the aligning method of rod member, especially a kind of screw-type straightening method of tap bolt of slender rod
Background technology
At present, the alignment of bool mainly contains two kinds of methods: 1, take turns the point type alignment, 2, the alignment of hyperbola formula more.All there are some shortcomings in these two kinds of alignments.Many wheel point type alignment modes, partial points concentrates stressed existence to produce the risk of fine fisssure or fracture for a long time; Hyperbola formula alignment mode, though workpiece seesaws during alignment, stress point concentrates on the screw rod middle part, two ends do not stress, the alignment weak effect, qualification rate is about 90%.
Summary of the invention
The screw-type straightening method that the purpose of this invention is to provide a kind of tap bolt of slender rod, can carry out comprehensive, no blind spot alignment for curved elongated bar tap bolt bar portion, unstressed concentrating can not produce potential safety hazards such as micro-crack in alignment process, and alignment is effective.
For this reason, technical scheme of the present invention is: a kind of screw-type straightening method of tap bolt of slender rod, be to adopt to make the bar portion of tap bolt of slender rod carry out alignment by the mode of roll extrusion, it is characterized in that: comprise a pair of alignment roller and auxiliary wheel, the cylindrical of alignment roller is provided with the single head helicoid of protrusion, and the width of auxiliary wheel is identical with the pitch of the single head helicoid of alignment roller; Also comprise the rotating shaft of a pair of equidirectional rotation, a pair of alignment roller and auxiliary wheel are separately fixed in the rotating shaft of a pair of equidirectional rotation, after fixing, the angle that staggers of the helicoid of a pair of alignment roller is 180 °, auxiliary wheel is corresponding to the root of the bar portion of tap bolt of slender rod, be provided with a piece between the alignment roller, the height of a piece will guarantee that the bar portion central axis of tap bolt of slender rod is a little less than shaft axis; During alignment, only need the bar portion of tap bolt of slender rod is placed on bar portion opposite spin under the frictional force effect of tap bolt of slender rod on the piece, bar portion until part bar portion any surface finish, is had only slight visible even spiral vestige by rolling and straightening.
In the technique scheme, the diameter of the diameter of auxiliary wheel, alignment roller changes according to the difference of the diameter of the bar portion of dissimilar tap bolt of slender rod.
Beneficial effect:
When using the present invention to come the alignment bolt, the bar portion of stock tap bolt is evenly stressed, part bar portion any surface finish, there is not the vestige that protrudes, can carry out comprehensive, no blind spot alignment to the bar portion of tap bolt of slender rod, unstressed concentrating can not produce potential safety hazards such as micro-crack in alignment process, and alignment is effective.
Description of drawings
Fig. 1 is the alignment schematic diagram of invention.
Fig. 2 is the vertical view of Fig. 1.
The specific embodiment
Shown in Fig. 1,2, it is as follows to further describe the present invention: a kind of screw-type straightening method of tap bolt of slender rod, comprise a pair of alignment roller 3,4 and auxiliary wheel 5, the cylindrical of alignment roller 3,4 is provided with the single head helicoid of protrusion, the width of auxiliary wheel 5 and alignment roller 3,4 the pitch of single head helicoid identical; A pair of alignment roller 3,4 and auxiliary wheel 5 are separately fixed in the rotating shaft of a pair of equidirectional rotation, after fixing, the angle that staggers of the helicoid of alignment roller 3, alignment roller 4 is 180 °, auxiliary wheel 5 is corresponding to the root of the bar portion of tap bolt of slender rod 2, be provided with a piece 1 between alignment roller 3,4, the height of a piece 1 will guarantee that the bar portion central axis of tap bolt of slender rod 2 is a little less than shaft axis; During alignment, only need the bar portion of tap bolt of slender rod 2 is placed on the piece, bar portion opposite spin under the frictional force effect of tap bolt of slender rod, bar portion until part bar portion any surface finish, is had only slight visible even spiral vestige by rolling and straightening.
In the technique scheme, the diameter of the diameter of auxiliary wheel 5, alignment roller 3,4 changes according to the difference of the diameter of the bar portion of dissimilar tap bolt of slender rod.
The screw-type straightening method of a kind of tap bolt of slender rod of the present invention, the special equipment that can utilize screw-rolling machine to transform is realized, is specially: the cylindrical die roll of screw-rolling machine remove need not, alignment roller and auxiliary wheel are installed on two spindle drums of lathe bed, achieve the goal.
Claims (2)
1. the screw-type straightening method of a tap bolt of slender rod, be to adopt to make the bar portion of tap bolt of slender rod carry out alignment by the mode of roll extrusion, it is characterized in that: comprise a pair of alignment roller and auxiliary wheel, the cylindrical of alignment roller is provided with the single head helicoid of protrusion, and the width of auxiliary wheel is identical with the pitch of the single head helicoid of alignment roller; Also comprise the rotating shaft of a pair of equidirectional rotation, a pair of alignment roller and auxiliary wheel are separately fixed in the rotating shaft of a pair of equidirectional rotation, after fixing, the angle that staggers of the helicoid of a pair of alignment roller is 180 °, auxiliary wheel is corresponding to the root of the bar portion of tap bolt of slender rod, be provided with a piece between the alignment roller, the height of a piece will guarantee that the bar portion central axis of tap bolt of slender rod is a little less than shaft axis; During alignment, only need the bar portion of tap bolt of slender rod is placed on the piece, bar portion opposite spin under the frictional force effect of tap bolt of slender rod, bar portion until part bar portion any surface finish, is had only slight visible even spiral vestige by rolling and straightening.
2. the screw-type straightening method of a kind of tap bolt of slender rod according to claim 1 is characterized in that: the height of the diameter of the diameter of auxiliary wheel, alignment roller, a piece changes according to the difference of the diameter of the bar portion of dissimilar tap bolt of slender rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102731975A CN101708516B (en) | 2009-12-14 | 2009-12-14 | Screw-type straightening method for tap bolt of slender rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102731975A CN101708516B (en) | 2009-12-14 | 2009-12-14 | Screw-type straightening method for tap bolt of slender rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101708516A CN101708516A (en) | 2010-05-19 |
| CN101708516B true CN101708516B (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102731975A Active CN101708516B (en) | 2009-12-14 | 2009-12-14 | Screw-type straightening method for tap bolt of slender rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN101708516B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941444A (en) * | 2012-11-05 | 2013-02-27 | 宁波镇明转轴有限公司 | Manufacturing method of explosion-proof motor shaft |
| CN105689449B (en) * | 2016-01-28 | 2018-08-14 | 宁波万盛智能科技股份有限公司 | Axis class axle center coalignment |
| CN108673051B (en) * | 2018-05-23 | 2022-07-12 | 北京理工大学 | Numerical control rolling machine tool for rolling outer circle of torsion shaft |
| CN110369559A (en) * | 2019-08-08 | 2019-10-25 | 东风汽车紧固件（武汉）有限公司 | Slender rod piece from shift calibrating method |
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2009
- 2009-12-14 CN CN2009102731975A patent/CN101708516B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101708516A (en) | 2010-05-19 |
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