CN101850393A - Gear cold rotation flanging press forming method - Google Patents
Gear cold rotation flanging press forming method Download PDFInfo
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- CN101850393A CN101850393A CN 201010176232 CN201010176232A CN101850393A CN 101850393 A CN101850393 A CN 101850393A CN 201010176232 CN201010176232 CN 201010176232 CN 201010176232 A CN201010176232 A CN 201010176232A CN 101850393 A CN101850393 A CN 101850393A
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- preform
- spinning roller
- driving shaft
- spinning
- gear
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Abstract
The invention relates to a gear cold rotation flanging press forming method, which comprises the forming step of blank prefabrication. A forming equipment spinning machine comprises at least three shaft rotating wheels in synchronous rotation on the same work surface, the work procedures of forming, hole shrinkage, bottom sealing, flanging, edge curling and rib pressing are completed through rotary pressing, and finished products of gears with vertical teeth conforming to the design specification size can be prepared. The invention is characterized in that the following steps are sequentially carried out after the blank prefabrication: 1) installing and clamping prefabricated blank; 2) controlling the synchronous movement with the same proportion at the same speed of a driving shaft rotating wheel and a driven shaft rotating wheel; 3) carrying out outer circle diameter change rotating pressing on the prefabricated blank; 4) carrying out tooth part rotating pressing on the prefabricated blank to finally obtain the finished products of the gears; and 5) controlling the driving shaft rotating wheel to retreat in the radial feeding direction, and making the preparation to form a next prefabricated blank. The method of the invention improves the hardness and the smoothness of the tooth surface, the compensable tooth surface is widened, the investment of the raw materials is reduced, the intensity of the wear surface is improved, the service life of the gears is prolonged, and the noise and the abrasion of the gears during the engagement are reduced.
Description
Technical field
The present invention relates to gear forming, particularly relate to a kind of gear cold rotation flanging press forming method.
Background technology
The cold spinning forming method is the few no cutting working method of process characteristics such as a kind of comprehensive forging, spinning, bending, looping mill rolling and edging.But, cold spinning is used for the forming gear series products, but can't carry out machining control to the parameters such as modulus, the number of teeth, pressure angle, reference circle, tooth accuracy and intensity of gear, exist and be difficult to solve the girth change that the blank reducing forms in the processing, the number of teeth of extending and modulus work in-process can not the rule variation, and, the indelible defective of surplus value that the girth that reducing forms changes.
Summary of the invention
Technical problem to be solved by this invention is the defective that remedies above-mentioned prior art, and a kind of gear cold rotation flanging press forming method is provided.
Technical problem of the present invention is solved by the following technical programs.
This gear cold rotation flanging press forming method, its forming step comprises the prefabricated step of blank, the former spinning machine is included at least three axle spinning rollers that rotate synchronously on the same working face: the driving shaft spinning roller, driven shaft spinning roller and time driving shaft spinning roller, described driving shaft spinning roller and driven shaft spinning roller are to keep the linkage structure of Zhou Jing than same rotational speed, described driving shaft spinning roller is pre-spinning spinning roller, the preform tail is held out against on the spinning machine core, drive plug and preform rotation by the driving shaft spinning roller, finish shaping by spinning, undergauge, close up, back cover, flange, crimping and beading operation make the gear finished product that the band that meets the design specification size is indulged tooth.
The characteristics of this gear cold spinning forming method are:
Following steps are arranged after the prefabricated step of described blank successively:
1) clamping preform;
2) control driving shaft spinning roller and driven shaft spinning roller move with speed synchronously in proportion, and be synchronous with the precision that guarantees the number of teeth and modulus;
3) preform is carried out cylindrical reducing spinning
Control driven shaft spinning roller turns clockwise with 50～200 rev/mins, and control time driving wheel carries out cylindrical reducing spinning than equal velocity radial feed motion to preform with Zhou Jing simultaneously, makes the external diameter of preform meet the reference circle size of design;
4) preform is carried out tooth portion spinning
Control time driving shaft spinning roller radially direction of feed is return, and makes the driving shaft spinning roller begin the radial feed motion simultaneously preform is carried out tooth portion spinning, finally makes the gear finished product of the vertical tooth of band of the gear size that meets design;
5) control driving shaft spinning roller radially direction of feed return, prepare to carry out next preform moulding.
Technical problem of the present invention is solved by following further technical scheme.
Described clamping preform, be with preform with the directed locate mode of central bore fixedly clamping at spinning machine driven shaft spinning roller, adopting with the driven shaft spinning roller keeps the hydraulic pressure end face hold down gag of concentric and coaxial rotation to clamp the preform both ends of the surface, to prevent that preform from producing axial irregular deformation when being subjected to radial pressure, comprise the distortion of non-appointed part or direction.
The radial feed of described driving shaft spinning roller and time driving shaft spinning roller with return vertically, be to finish by 60～120 tons of static pressure works done of hydraulic system.
The job order of described driving shaft spinning roller and driving shaft spinning roller, be by described driving shaft spinning roller the pre-spinning of the external diameter of preform to be diminished earlier, after the precompressed size of the tooth portion thickness that preform thickness is reached meet gear, restart the tooth portion spinning of driving shaft spinning roller to preform.
The described gear size that meets design comprises the size of circle at the bottom of the tooth, reference circle, modulus and outside circle.
Described preform is to be washed into the circular blank of external diameter than gear finished product external diameter big 1～20% with impact style, and a via hole of wearing of centre is finished in the lump.
The external diameter of described circular blank is 20～200mm, and thickness is 1～20mm.
A via hole of wearing of the centre of described circular blank is a kind of in band key circular hole and the non-circular hole.
The beneficial effect that the present invention is compared with the prior art is:
The inventive method changes the material crystals tissue density of working gear face by cold spinning, improved the hardness of the flank of tooth, fineness, can exempt following process such as heat treatment quenching and tempering or carburizing for the low speed underloading with gear, can also diminish by external diameter and broaden with the compensation flank of tooth, make thin material reach the gear teeth face width of its thick material more than 2 times, not only reduced raw-material input, improve the intensity of the flank of tooth, prolong service life of gear, noise and wearing and tearing when reducing gears engaged can also significantly be enhanced productivity, and change the processing custom, overcome the blank random tooth that reducing causes in process, improve the saturation degree and the intensity of the flank of tooth.
Description of drawings
Fig. 1 is three spinning roller schematic diagrames of gear cold spinning machine;
Fig. 2 is the specific embodiment of a inventive method circular blank schematic diagram;
Fig. 3 is the effect schematic diagram that the inferior driving shaft spinning roller of the specific embodiment of the inventive method produces preform when precompressed;
Fig. 4 is the effect schematic diagram that the driving shaft spinning roller of the specific embodiment of the inventive method produces preform when work.
The specific embodiment
Below in conjunction with the specific embodiment and contrast accompanying drawing method of the present invention is described.
A kind of gear cold rotation flanging press forming method shown in Fig. 2～4, the former spinning machine is included in three axle spinning rollers that rotate synchronously on the same working face: driving shaft spinning roller 1, driven shaft spinning roller 2 and time driving shaft spinning roller 3, driving shaft spinning roller 1 and driven shaft spinning roller 3 are linkage structures, keep Zhou Jing than identical rotating speed, inferior driving shaft spinning roller 3 is pre-spinning spinning rollers, the preform tail is held out against on the spinning machine core, drive core and preform rotation by driving shaft spinning roller 1, by unique radial feed motion, from preform one side with its gradual spinning the rotation core on, make the regular generation plastic deformation of preform, finish shaping, undergauge, close up, back cover, flange, crimping and beading operation make the gear finished product that meets the design specification size.
Following steps are arranged successively:
Preform: be washed into the circular blank of external diameter with impact style, and a via hole of wearing of centre is finished in the lump than gear finished product external diameter big 50%.The external diameter of circular blank is 50mm, and thickness is 5mm.A via hole of wearing of the centre of circular blank is a non-circular hole;
The clamping preform; Fixedly clamping is at spinning machine driven shaft spinning roller with the directed locate mode of central bore with preform, and employing keeps the hydraulic pressure end face hold down gag of concentric and coaxial rotation to clamp the preform both ends of the surface with the driven shaft spinning roller;
Control driving shaft spinning roller and driven shaft spinning roller synchronous same-speed, synchronous with the precision that guarantees the number of teeth and modulus;
Control driven shaft spinning roller turns clockwise with 150 rev/mins, control time driving wheel carries out cylindrical reducing spinning than equal velocity radial feed motion to preform with Zhou Jing simultaneously, and making external diameter is that 50mm, thickness are that the external diameter spinning of the preform of 5mm is 8mm for as shown in Figure 3 the reference circle size 46mm, the flank of tooth thickness that meet design;
Control time driving shaft spinning roller radially direction of feed is return, make the driving shaft spinning roller begin the radial feed motion simultaneously preform is carried out tooth portion spinning, finally make the gear finished product of the vertical tooth of band of the gear size that meets design as shown in Figure 4, external diameter is that 48mm, flank of tooth thickness are 10mm, and circle, reference circle, modulus and outside circle adhere to specification at the bottom of the tooth;
Control driving shaft spinning roller radially direction of feed is return, and prepares to carry out next preform moulding.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention; make some alternative or obvious modification that are equal to without departing from the inventive concept of the premise; and performance or purposes are identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (8)
1. gear cold rotation flanging press forming method, its forming step comprises the prefabricated step of blank, the former spinning machine is included at least three axle spinning rollers that rotate synchronously on the same working face: the driving shaft spinning roller, driven shaft spinning roller and time driving shaft spinning roller, described driving shaft spinning roller and driven shaft spinning roller are to keep the linkage structure of Zhou Jing than same rotational speed, described driving shaft spinning roller is pre-spinning spinning roller, the preform tail is held out against on the spinning machine core, drive plug and preform rotation by the driving shaft spinning roller, finish shaping by spinning, undergauge, close up, back cover, flange, crimping and beading operation, make the gear finished product of the vertical tooth of band that meets the design specification size, it is characterized in that:
Following steps are arranged after the prefabricated step of described blank successively:
1) clamping preform;
2) control driving shaft spinning roller and driven shaft spinning roller are synchronously in proportion with the speed motion;
3) preform is carried out cylindrical reducing spinning
Control driven shaft spinning roller turns clockwise with 50～200 rev/mins, and control time driving shaft spinning roller carries out cylindrical reducing spinning than equal velocity radial feed motion to preform with Zhou Jing simultaneously, makes the external diameter of preform meet the reference circle size of design;
4) preform is carried out tooth portion spinning
Control time driving shaft spinning roller radially direction of feed is return, and makes the driving shaft spinning roller begin the radial feed motion simultaneously preform is carried out tooth portion spinning, finally makes the gear finished product of the vertical tooth of band of the gear size that meets design;
5) control driving shaft spinning roller radially direction of feed return, prepare to carry out next preform moulding.
2. gear cold rotation flanging press forming method as claimed in claim 1 is characterized in that:
Described clamping preform, be with preform with the directed locate mode of central bore fixedly clamping at spinning machine driven shaft spinning roller, adopting with the driven shaft spinning roller keeps the hydraulic pressure end face hold down gag of concentric and coaxial rotation to clamp the preform both ends of the surface, to prevent that preform from producing axial irregular deformation when being subjected to axial compressive force, comprise the distortion of non-appointed part or direction.
3. gear cold rotation flanging press forming method as claimed in claim 1 or 2 is characterized in that:
The radial feed of described driving shaft spinning roller and time driving shaft spinning roller with return, be to finish by 60～120 tons of static pressure works done of hydraulic system.
4. gear cold rotation flanging press forming method as claimed in claim 3 is characterized in that:
The job order of described driving shaft spinning roller and driving shaft spinning roller, be by described driving shaft spinning roller the pre-spinning of the external diameter of preform to be diminished earlier, after the precompressed size of the tooth portion thickness that preform thickness is reached meet gear, restart the tooth portion spinning of driving shaft spinning roller to preform.
5. gear cold rotation flanging press forming method as claimed in claim 4 is characterized in that:
The described gear size that meets design comprises the size of circle at the bottom of the tooth, reference circle, modulus and outside circle.
6. gear cold rotation flanging press forming method as claimed in claim 5 is characterized in that:
Described preform is to be washed into the circular blank of external diameter than gear finished product external diameter big 1～20% with impact style, and a via hole of wearing of centre is finished in the lump.
7. gear cold rotation flanging press forming method as claimed in claim 6 is characterized in that:
The external diameter of described circular blank is 20～200mm, and thickness is 1～20mm.
8. gear cold rotation flanging press forming method as claimed in claim 7 is characterized in that:
A via hole of wearing of the centre of described circular blank is a kind of in band key circular hole and the non-circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101762324A CN101850393B (en) | 2010-05-14 | 2010-05-14 | Gear cold rotation flanging press forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101762324A CN101850393B (en) | 2010-05-14 | 2010-05-14 | Gear cold rotation flanging press forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101850393A true CN101850393A (en) | 2010-10-06 |
| CN101850393B CN101850393B (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101762324A Active CN101850393B (en) | 2010-05-14 | 2010-05-14 | Gear cold rotation flanging press forming method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193083A (en) * | 2020-09-17 | 2022-03-18 | 宝山钢铁股份有限公司 | Spinning wheel preparation method suitable for spinning forming process of internal and external tooth parts |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09206863A (en) * | 1996-02-05 | 1997-08-12 | Irisu Shokai Kk | Device for manufacturing transmission gear equipped with external gear line |
| US5930896A (en) * | 1996-03-15 | 1999-08-03 | Nissan Motor Co., Ltd. | Apparatus and method for forming a gear |
| US6161409A (en) * | 1996-08-14 | 2000-12-19 | Wf-Maschinebau Und Blechformtechnik Gmbh & Co. Kommanditgessellschaft | Process and device for manufacturing a gear part with outer teeth |
| CN1644266A (en) * | 2005-01-12 | 2005-07-27 | 刘宏伟 | Extruding method for teeth of gearing blanks |
| CN1718305A (en) * | 2005-07-21 | 2006-01-11 | 华南理工大学 | Gear spin pressure forming method and its device |
-
2010
- 2010-05-14 CN CN2010101762324A patent/CN101850393B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09206863A (en) * | 1996-02-05 | 1997-08-12 | Irisu Shokai Kk | Device for manufacturing transmission gear equipped with external gear line |
| US5930896A (en) * | 1996-03-15 | 1999-08-03 | Nissan Motor Co., Ltd. | Apparatus and method for forming a gear |
| US6161409A (en) * | 1996-08-14 | 2000-12-19 | Wf-Maschinebau Und Blechformtechnik Gmbh & Co. Kommanditgessellschaft | Process and device for manufacturing a gear part with outer teeth |
| CN1644266A (en) * | 2005-01-12 | 2005-07-27 | 刘宏伟 | Extruding method for teeth of gearing blanks |
| CN1718305A (en) * | 2005-07-21 | 2006-01-11 | 华南理工大学 | Gear spin pressure forming method and its device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193083A (en) * | 2020-09-17 | 2022-03-18 | 宝山钢铁股份有限公司 | Spinning wheel preparation method suitable for spinning forming process of internal and external tooth parts |
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| Publication number | Publication date |
|---|---|
| CN101850393B (en) | 2012-08-15 |
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