CN201088994Y - Material-returning device of power spinning machine - Google Patents
Material-returning device of power spinning machine Download PDFInfo
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- CN201088994Y CN201088994Y CNU2007200806615U CN200720080661U CN201088994Y CN 201088994 Y CN201088994 Y CN 201088994Y CN U2007200806615 U CNU2007200806615 U CN U2007200806615U CN 200720080661 U CN200720080661 U CN 200720080661U CN 201088994 Y CN201088994 Y CN 201088994Y
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- material returning
- material returned
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Abstract
The utility model discloses a material returning device for a power spinning machine. The utility model comprises a hydraulic device, a material returning plate and a material returning ring, wherein the hydraulic device provides and applies a material returning force on the material returning plate, the material returning plate transmits the material returning force to the material returning ring, and then the material returning transmits the material returning force to a workpiece to accomplish material returning. The utility model is characterized in that: the device also comprises an offsetting nut and a material returning nut; the material returning nut and the material returning ring are in threaded connected and are locked by a cone pointed set screw; a connecting structure of a small-angle conical surface is adopted between the material returning ring and the workpiece. A conical surface connecting structure is adopted between the material returning plate and the material returning nit. The conical surface connecting structure can effectively increases contact surface, thereby increasing the friction force, effectively improving the driving torque transmission in the spin process, reducing the tangential slippage between the workpiece and a mandrel and spinning wheels during the spinning process, and obviously improving the surface quality, dimension precision of products and prolonging the service life of the device.
Description
Technical field
The utility model relates to a kind of power spinning machine, relates in particular to a kind of discharging device of power spinning machine.
Background technology
Shear spinning technology is applicable to a kind of pressure processing method of shaping thin-walled hollow revolving parts, it is by spinning roller the workpiece of doing gyration with main shaft to be done feed motion, and pointwise is exerted pressure and made it produce continuous plastic deformation and become the processing method of required hollow revolving parts to workpiece.And shear spinning is by spinning roller direction of feed different dextrorotation, two kinds of spinning modes of derotation of being divided into the flow direction of fur material.In the shear spinning course of work, the final part of spinning is because influence of various factors such as rotary pressure process parameters, the mould phenomenon (work piece inner surface and core gap are too small) of embracing is arranged during workpiece, the discharging device of part is most important under this kind state, if material returned power can not overcome embrace mould power or act on the circumferential material returned power of part inhomogeneous as easy as rolling off a log cause can not discharging, part axial distortion, scratch the generation of phenomenons such as core.And under the derotation duty, workpiece head and material returned loop contacts, workpiece produces plastic deformation during the spinning roller contact workpiece, the workpiece deformation point is subjected to the three-dimensional stress state of radial compressive stress, circumferential tension, axial compression stress, and circumferentially tension produces the moment of torsion opposite with the workpiece direction of rotation, moment of torsion is passed on the material returned ring that contacts with workpiece along workpiece, there is moment of torsion in the contact-making surface of material returned ring and workpiece, therefore, the frictional force between workpiece and the unloading mechanism enough greatly just can make workpiece not produce tangential sliding phenomenon with core in spinning process.If the discharging device design is unreasonable, the generation that easily produces above-mentioned situation.
Tradition shear spinning equipment discharging device parts such as is grabbed by zigzag material returned ring, discharging and is formed, discharging grab install with the spinning roller frame on, material returned power is provided by spinning roller frame driving oil cylinder.Material returned ring has very high hardness through quenching, material returned ring is that multiple spot contacts with workpiece under the duty, can not provide and overcome the moment of torsion that produces by spinning roller and workpiece, thereby the friction of material returned ring and workpiece is converted to dynamic friction by static friction, workpiece is the easily tangential slippage between generation and mandrel, the spinning roller in spinning process, cause to produce serial defective in the part spinning process, cause the spinning part to be scrapped easily.On the other hand because material returned trepan tooth has higher hardness, in spinning process if having impurity to be bonded at that mandrel surface easily causes mandrel surface to produce scratching, cause part inner surface poor surface smoothness, core is reprocessed even scrap.Once more, the mould power of embracing that produces as workpiece and core is crossed conference and is caused discharging to be grabbed or material returned ring opening, causes discharging to be grabbed or material returned ring is scrapped and do not reached material returned purpose.
Summary of the invention
The purpose of this utility model is exactly that a kind of improved material returning device of spin-forging machine is provided in order to address the above problem, this discharging device can effectively improve the driving moment transmission in the derotation technical process, reduces workpiece in spinning process and the tangential slippage between the mandrel, spinning roller.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises hydraulic means, stripper and material returned ring, the material returned masterpiece that hydraulic means provides is used for stripper, and stripper passes to material returned ring with material returned power, and material returned ring passes to workpiece with material returned power again, finish material returned task, the utility model also comprises reduction nut and material returned nut; Adopt spiral marking connection between material returned nut and the material returned ring and hold out against screw locked, adopt low-angle conical surface connecting structure between material returned ring and the workpiece, employing conical surface connecting structure between stripper and the material returned nut with the awl end.
As further improvement of the utility model, described hydraulic means is: side mounting material returned oil cylinder outside main spindle box, material returned oil cylinder is connected with stripper by hydraulic tube.
Described material returned oil cylinder is two, hangs on the both sides of main spindle box symmetrically.
The beneficial effects of the utility model are:
(1) adopts conical surface connecting structure between stripper and the material returned nut, adopt low-angle conical surface connecting structure between material returned ring and the workpiece, change the face contact into by traditional some contact, the frictional force of material returned ring and workpiece obviously increases, effectively improved the driving moment transmission in the derotation technical process, reduce workpiece in spinning process and the tangential slippage between the mandrel, spinning roller, remarkable to improving surface quality of products and prolonging the effect in service life of frock.
(2) adopt low-angle conical surface connecting structure between material returned ring and the workpiece, material returned ring inner conical surface provides the workpiece end radial constraint in spinning, the material returned process, has effectively improved the spinning dimensional accuracy of products.
(3) material returned power is provided by main spindle box outside material returned oil cylinder, and material returned power is big and put forth effort equilibrium, so can overcome frictional force between workpiece and the core (promptly embracing mould power).
Description of drawings
Fig. 1 is an axial sectional structure chart of the present utility model;
Fig. 2 is the axial sectional structure chart of the utility model when user mode.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described in detail:
As shown in Figure 1, the utility model comprises hydraulic means, reduction nut 1, stripper 2, material returned nut 3 and material returned ring 6, adopt spiral marking connection between material returned nut 3 and the material returned ring 6 and hold with awl that to hold out against screw 5 locked, adopt low-angle conical surface connecting structure between material returned ring 6 and the workpiece 9, adopt conical surface connecting structure between stripper 2 and the material returned nut 3.
Described hydraulic means is: side mounting material returned oil cylinder outside main spindle box, material returned oil cylinder is connected with stripper by hydraulic tube.This structure does not have embodiment in the drawings, all is to make according to a conventional method.
Described material returned oil cylinder is two, hangs on the both sides of main spindle box symmetrically.
As shown in Figure 2, the utility model in use, power spinning machine derotation processes workpiece 9, workpiece 9 is enclosed within the outside of mandrel 8, workpiece 9 is pressed direction of arrow rotation among the figure under the drive of main shaft, spinning roller 10 pushes workpiece 9 to mandrel 8 under hydraulic action, move axially by the direction of arrow among the figure simultaneously, at this moment the deformation point of workpiece 9 is subjected to radial compressive stress, circumferential tension, the pressure of these three directions of axial compression stress, wherein, circumferentially tension produces the moment of torsion opposite with the direction of rotation of workpiece 9, moment of torsion is passed on the material returned ring 6 that contacts with workpiece 9 along workpiece 9, there is moment of torsion in material returned ring 6 with the contact-making surface of workpiece 9, owing to adopt conical surface connecting structure between stripper 2 and the material returned nut 3, adopt low-angle conical surface connecting structure between material returned ring 6 and the workpiece 9, change the face contact into by traditional some contact, material returned ring 6 obviously increases with the frictional force of workpiece 9, so can overcome above-mentioned moment of torsion on the one hand, reduce workpiece in spinning process with mandrel, tangential slippage between the spinning roller, effectively improved the transmission of driving moment on the other hand, can overcome frictional force between workpiece and the core (promptly embracing mould power), improved surface quality of products, dimensional accuracy has prolonged the service life of frock.
Claims (3)
1. material returning device of spin-forging machine, comprise hydraulic means, stripper and material returned ring, the material returned masterpiece that hydraulic means provides is used for stripper, stripper passes to material returned ring with material returned power, material returned ring passes to workpiece with material returned power again, finish material returned task, it is characterized in that: also comprise reduction nut and material returned nut; Adopt spiral marking connection between material returned nut and the material returned ring and hold out against screw locked, adopt low-angle conical surface connecting structure between material returned ring and the workpiece, employing conical surface connecting structure between stripper and the material returned nut with the awl end.
2. material returning device of spin-forging machine according to claim 1 is characterized in that: described hydraulic means is: side mounting material returned oil cylinder outside main spindle box, material returned oil cylinder is connected with stripper by hydraulic tube.
3. material returning device of spin-forging machine according to claim 1 is characterized in that: described material returned oil cylinder is two, hangs on the both sides of main spindle box symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200806615U CN201088994Y (en) | 2007-08-17 | 2007-08-17 | Material-returning device of power spinning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200806615U CN201088994Y (en) | 2007-08-17 | 2007-08-17 | Material-returning device of power spinning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201088994Y true CN201088994Y (en) | 2008-07-23 |
Family
ID=39860751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200806615U Expired - Fee Related CN201088994Y (en) | 2007-08-17 | 2007-08-17 | Material-returning device of power spinning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201088994Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672074A (en) * | 2012-06-04 | 2012-09-19 | 昆山市三众模具制造有限公司 | System utilizing oil pressure to push mould core bar out |
| CN104550394A (en) * | 2014-12-30 | 2015-04-29 | 北京有色金属研究总院 | Powerful spinning withdrawing device |
| CN108500108A (en) * | 2017-02-27 | 2018-09-07 | 湖北三江航天红阳机电有限公司 | Circumferential muscle cylinder spinning tool and manufacturing process in a kind of band |
-
2007
- 2007-08-17 CN CNU2007200806615U patent/CN201088994Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672074A (en) * | 2012-06-04 | 2012-09-19 | 昆山市三众模具制造有限公司 | System utilizing oil pressure to push mould core bar out |
| CN104550394A (en) * | 2014-12-30 | 2015-04-29 | 北京有色金属研究总院 | Powerful spinning withdrawing device |
| CN104550394B (en) * | 2014-12-30 | 2016-07-06 | 北京有色金属研究总院 | A kind of shear spinning discharging device |
| CN108500108A (en) * | 2017-02-27 | 2018-09-07 | 湖北三江航天红阳机电有限公司 | Circumferential muscle cylinder spinning tool and manufacturing process in a kind of band |
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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: 20080723 Termination date: 20150817 |
|
| EXPY | Termination of patent right or utility model |