CN201253720Y - Thread rolling tool - Google Patents
Thread rolling tool Download PDFInfo
- Publication number
- CN201253720Y CN201253720Y CNU2008200151302U CN200820015130U CN201253720Y CN 201253720 Y CN201253720 Y CN 201253720Y CN U2008200151302 U CNU2008200151302 U CN U2008200151302U CN 200820015130 U CN200820015130 U CN 200820015130U CN 201253720 Y CN201253720 Y CN 201253720Y
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- thread
- roller
- rolling
- roll extrusion
- rolling tool
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Abstract
The utility model relates to a thread rolling tool, comprising an idler wheel, a shaft core, a cutter body and a spring box; the idler wheel is connected with the shaft core through a bearing; the shaft core is threaded through both ends of the cutter body and then fixed through nuts; a positioning sleeve is arranged between the cutter body and the idler wheel; the tail end of the cutter body is connected with the spring box through a nut; and the shape of the cross-section of the idler wheel is the same as that of the cross-section of the rolled thread. The tool can be easily operated to roll thread and simplifies the process, so that the tool can be widely used in the finish machining of screw thread.
Description
Technical field
The utility model relates to a kind of rolling and processing instrument, particularly relates to a kind of thread rolling tool.
Background technology
Rolling and processing is that the machine components finished surface is carried out polishing and strengthens a kind of ELEMENTARY INTRODUCTION TO NON technology of processing.Lathe uses the roller that rotates freely to do to roll relatively on workpiece machining surface, apply certain pressure simultaneously, push by force, can make matallic surface layer produce plastic deformation, " peak " with the surface goes to add " paddy " of filling the surface, play the microcosmos geometric shape of revising finished surface, reduce the roughness of finished surface, improve the effect of finished surface corrosion resistance, hardness, wearability and fatigue resistance.Roll extrusion plane, periphery are very common in mechanical industry at present, and rolling tools mostly adopt cylindrically coiled spring at present, and thread rolling tool is subjected to unidirectional radial load bigger in the roll extrusion process, the ability to bear deficiency of cylindrically coiled spring.The surperficial microstoning of screw thread and surface abrasion resistance, anti-fatigue performance generally are to finish by grinding machine and heat treatment nitrogen metallization processes, and such method complex technical process has greatly influenced production efficiency.
Summary of the invention
The utility model has overcome deficiency of the prior art, provides a kind of easy to use, the good thread rolling tool of processing treatment effect.
In order to address the above problem, the utility model by the following technical solutions:
A kind of thread rolling tool, comprise roller, mandrel, cutter hub and spring case, roller is connected with mandrel by bearing, be provided with positioning sleeve between bearing and the roller, mandrel passes the cutter hub two ends and fixes by nut, the cutter hub rear end is connected with spring case by nut, it is characterized in that, the shape of roller cross section is with identical by the shape of the thread cross-section of roll extrusion.
Disk spring is installed in the described spring case.
Compared with prior art, the beneficial effects of the utility model are:
1, adopt the utility model instrument double thread surface to carry out microstoning and handle, operating process is simple, and having saved in the past, machining screw has greatly improved operating efficiency with the technical process of grinding machine and heat treatment nitrogenize.
2, adopt disk spring in the thread rolling tool, holding capacity is strong, and roll extrusion is effective.
Description of drawings
Fig. 1 is the thread rolling tool front view
Fig. 2 is the thread rolling tool left view
The specific embodiment
The utility model instrument is that existing rolling tools are transformed, and is used for rolled thread, thereby has reached the purpose that double thread surface microstoning is handled.
A kind of thread rolling tool, as depicted in figs. 1 and 2, comprise roller 1, mandrel 3, cutter hub 6 and spring case 7, the shape of roller 1 cross section is with identical by the shape of the thread cross-section of roll extrusion, roller 1 is connected with mandrel 3 by bearing 2, and mandrel 3 passes cutter hub 6 two ends and fixing by nut 4, is provided with positioning sleeve 5 between bearing 2 and the roller 1, cutter hub 6 rear ends are connected with spring case 7 by nut 4 ', and disk spring 8 is installed in the spring case 7.
The spring that general rolling tools are adopted mostly is cylindrically coiled spring greatly, and cylindrically coiled spring radially ability to bear is poor, thereby has influenced the performance of rolling tools.Rolling tools of the present utility model adopt disk spring 8, and disk spring 8 rigidity are big, can bear big load with small deformation, are suitable for the less occasion of axial space.
Rolling pressure is the main technologic parameters in the rolling and processing, under certain condition, roll extrusion power increases, the surperficial flow harden degree and the degree of depth, and endurance life is along with raising, surface roughness reduces, but when roll extrusion power surpassed certain numerical value, north stress increase is excessive to be occurred tired and the decortication phenomenon owing to piece surface is pressed, thereby surface fatigue intensity is reduced, and roughness is damaged.The dimensional structure of the definite and workpiece of rolling pressure, roller profile structure has certain relation.Principle is that the unit force that rolling surface bears can not calculate dish spring decrement 10mm with theory above the strength degree of material, and generation 11000N is an example, determines rolling pressure: with manually controlling middle carriage, make its traverse feed 10mm; Then, the nut of rotating knife box back causes it to move to when with cutter box face the 3mm gap being arranged and stops, and its objective is the roll extrusion power that guarantees to have enough 11000N when roll extrusion.
The roll extrusion number of times generally is advisable with first and second, generally is no more than three times, surpasses three times surface decortication, damaging surface roughness on the contrary take place easily.
The surface of the work initial roughness is lower, and workpiece surface quality also better after the roll extrusion.Require the surface of the work initial roughness before the roll extrusion below Ra3.2.
Process is: be benchmark with the thread helix lift angle that processes earlier, adjust the angle of rolling roller 1, make the angle of rolling roller 1 consistent with the thread helix lift angle; Then, lathe just leaves to be changeed, and allows saddle move by thread pitch and carries out tool setting, simultaneously, with manually controlling upper slide rest, makes the screw thread two sides stressed evenly.Carry out roll extrusion with ahead running method, promptly the roll extrusion hobboing cutter is to the feeding of head of a bed direction, arrives withdrawing behind the assigned address; Behind the withdrawing, rolling roller 1 turns back to original position again to the motion of tailstock direction.The nut 4 ' that must guarantee the spring case back during roll extrusion has certain interval with the spring case face, to guarantee to have the roll extrusion power of enough needs.Roll extrusion three times adopts three skill of handling needles to measure the pitch diameter of thread, till reaching requirement.In the roll extrusion process,, suitably adjust the rolling speed and the amount of feeding according to the specification of the screw thread of being processed.Rolling and processing can be made cooling-lubricant with oil, kerosene, the emulsification wet goods of L-AN model, should filter before using, to guarantee cleaning.
Claims (2)
1, a kind of thread rolling tool, comprise roller (1), mandrel (3), cutter hub (6) and spring case (7), roller (1) is connected with mandrel (3) by bearing (2), be provided with positioning sleeve (5) between bearing (2) and the roller (1), mandrel (3) passes cutter hub (6) two ends and fixing by nut (4), cutter hub (6) rear end is connected with spring case (7) by nut (4 '), it is characterized in that, the shape of roller (1) cross section is with identical by the shape of the thread cross-section of roll extrusion.
2, thread rolling tool according to claim 1 is characterized in that, disk spring (8) is installed in the described spring case (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200151302U CN201253720Y (en) | 2008-08-20 | 2008-08-20 | Thread rolling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200151302U CN201253720Y (en) | 2008-08-20 | 2008-08-20 | Thread rolling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201253720Y true CN201253720Y (en) | 2009-06-10 |
Family
ID=40737035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200151302U Expired - Fee Related CN201253720Y (en) | 2008-08-20 | 2008-08-20 | Thread rolling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201253720Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190832A (en) * | 2014-07-30 | 2014-12-10 | 成都飞机工业（集团）有限责任公司 | Ultrasonic vibrating thread rolling enhancing device |
| CN105643026A (en) * | 2016-04-01 | 2016-06-08 | 中航飞机起落架有限责任公司 | MJ-reinforced internal thread rolling reinforcing device |
| CN106270819A (en) * | 2016-08-30 | 2017-01-04 | 津上精密机床（浙江）有限公司 | A kind of screw thread turns manufacturing apparatus and rolling screw-threads cutter head thereof |
| CN106346193A (en) * | 2016-11-17 | 2017-01-25 | 中车洛阳机车有限公司 | Arc rolling strengthening device |
| CN106736236A (en) * | 2016-12-16 | 2017-05-31 | 浙江工业大学 | A kind of non-rigid plane rolling tool |
| CN106736235A (en) * | 2016-12-16 | 2017-05-31 | 浙江工业大学 | It is a kind of to roll the constant plane rolling tool of power |
| CN108080881A (en) * | 2017-12-19 | 2018-05-29 | 中车长春轨道客车股份有限公司 | A kind of wheel tread depth rolling device |
-
2008
- 2008-08-20 CN CNU2008200151302U patent/CN201253720Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190832A (en) * | 2014-07-30 | 2014-12-10 | 成都飞机工业（集团）有限责任公司 | Ultrasonic vibrating thread rolling enhancing device |
| CN105643026A (en) * | 2016-04-01 | 2016-06-08 | 中航飞机起落架有限责任公司 | MJ-reinforced internal thread rolling reinforcing device |
| CN106270819A (en) * | 2016-08-30 | 2017-01-04 | 津上精密机床（浙江）有限公司 | A kind of screw thread turns manufacturing apparatus and rolling screw-threads cutter head thereof |
| CN106270819B (en) * | 2016-08-30 | 2018-03-20 | 津上精密机床（浙江）有限公司 | A kind of screw thread turns to make device and its rolling screw-threads cutter head |
| CN106346193A (en) * | 2016-11-17 | 2017-01-25 | 中车洛阳机车有限公司 | Arc rolling strengthening device |
| CN106736236A (en) * | 2016-12-16 | 2017-05-31 | 浙江工业大学 | A kind of non-rigid plane rolling tool |
| CN106736235A (en) * | 2016-12-16 | 2017-05-31 | 浙江工业大学 | It is a kind of to roll the constant plane rolling tool of power |
| CN108080881A (en) * | 2017-12-19 | 2018-05-29 | 中车长春轨道客车股份有限公司 | A kind of wheel tread depth 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: 20090610 Termination date: 20150820 |
|
| EXPY | Termination of patent right or utility model |