CN102744262B - Method for restraining axial floating of transverse wedge rolling unsymmetrical shaft part - Google Patents
Method for restraining axial floating of transverse wedge rolling unsymmetrical shaft part Download PDFInfo
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- CN102744262B CN102744262B CN201210229876.4A CN201210229876A CN102744262B CN 102744262 B CN102744262 B CN 102744262B CN 201210229876 A CN201210229876 A CN 201210229876A CN 102744262 B CN102744262 B CN 102744262B
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Abstract
The invention discloses a method for restraining axial floating of a transverse wedge rolling unsymmetrical shaft part, which is characterized by comprising the following steps: arranging a rack-shaped flat wedge on at least one rolled shaft section part of a rolling mould, wherein an inclined direction of the flat wedge is consistent with a flowing direction of the end face of a to-be-rolled part; heating the to-be-rolled part; conveying the heated to-be-rolled part into the rolling mould by an axial feeding device on a transverse wedge rolling machine, so as to roll; and during a rolling process, nipping the flat wedge into an unformed shaft section of the to-be-rolled part, thereby lastly obtaining a qualified unsymmetrical shaft part. The method has the advantages that the unformed shaft section of the to-be-rolled part is in contact with the transverse wedge all the time during the process of rolling the unsymmetrical shaft part; an unbalanced axial force generated in a deformed area of the to-be-rolled part is resisted by the transverse wedge; the phenomena of axial floating and stair misrun caused by unsuitable selection of mould parameters are overcome; and the reasonable rolling of the unsymmetrical shaft part is effectively ensured, so that the overall dimension and the mechanical property of the rolled products are also ensured.
Description
Technical field
The present invention relates to a kind of axial workpiece plastic forming technology, particularly relate to a kind of method that cross wedge rolling asymmetric shaft like members suppresses axial float.
Background technology
Cross wedge rolling is a kind of axial workpiece New Forming Process, has the advantages such as efficient material-saving, has at home and abroad obtained applying more widely.Along with the fast development of transportation and mechanized equipment industry, the demand of various axial workpiece grows with each passing day, and in shaft forgings, the overwhelming majority is asymmetric axial workpiece.When the asymmetric axial workpiece of cross wedge rolling single-piece rolling, inconsistent due to the left and right contraction percentage of area of axial workpiece or broadening length, the technological parameter of the left and right deformed area of rolling mold is chosen can not be just the same, if rule of thumb choose die parameters, the axial force that during rolling, left and right deformed area produces is difficult to balance, cause asymmetric shaft like members in the operation of rolling, occur the defect such as rolled piece axial float, step misrun, affect appearance and size and the mechanical performance of product.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method that cross wedge rolling asymmetric shaft like members preventing asymmetric shaft like members from occurring rolled piece axial float in the operation of rolling suppresses axial float.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of cross wedge rolling asymmetric shaft like members suppresses the method for axial float, and it comprises following concrete steps:
(1), at least one of rolling mold rolled shaft part position and arrange the flat wedge of at least one spline-simulating, the incline direction of flat wedge is consistent with by rolled piece end face flow direction, and arranges the tiltangleθ of flat wedge
iit is 3 ~ 9 °;
(2), 900 ~ 1200 DEG C will be heated to by rolled piece, and by the axial admission device on cross wedge rolling machine, being sent in this rolling mold by rolled piece after heating is rolled, during rolling, flat wedge is nipped by the unshaped shaft part of rolled piece, and along with the carrying out of rolling, be bulldozed by the shaping wedge that deformation section rolled piece being positioned at flat wedge place is rolled on mould, finally obtain qualified asymmetric shaft like members.
On described flat wedge, the tooth depth of each tooth is 0.5 ~ 2.5mm, the facewidth is 10 ~ 30mm, the length of tooth top is 5 ~ 20mm, the length of tooth root is 5 ~ 50mm.
The flat wedge that a spline-simulating is set by rolling shaft part position of described rolling mold.
Compared with prior art, advantage of the present invention is owing to being rolled shaft part position and be provided with the flat wedge of spline-simulating at least one of rolling mold, when rolling asymmetric shaft like members, by the unshaped shaft part of rolled piece all the time with flat wedge contact, flat wedge resisted the unbalanced axial force that produces by the deformed area of rolled piece, overcome because die parameters chooses the improper phenomenon such as axial motion, step misrun caused, effectively ensure that the reasonable rolling of asymmetric shaft like members, thus also ensure that appearance and size and the mechanical performance of the product rolled out; The flat wedge of what is more important can be arranged on by unfashioned any shaft part of rolled piece, and do not need the end face being arranged on stub bar, flexibility is stronger; And this flat wedge also helps lend some impetus to the range of choice being expanded technological parameter by the rotation of rolled piece, contribute to the friction that minimizing rolling mold is subject to simultaneously, reduce the wearing and tearing of rolling mold, improve the service life of rolling mold.
Accompanying drawing explanation
Fig. 1 is of the present invention by one of structural representation of rolled piece;
The schematic perspective view of the rolling mold that Fig. 2 uses for the embodiment of the present invention one, two;
Fig. 3 is the enlarged diagram at A place in Fig. 2;
Fig. 4 is the expansion schematic diagram of Fig. 2;
Fig. 5 be the embodiment of the present invention one rolling mold on the Longitudinal cross section schematic of flat wedge;
The schematic perspective view of the rolling mold that Fig. 6 uses for the embodiment of the present invention three, four;
Fig. 7 is the expansion schematic diagram of Fig. 6;
Fig. 8 for the present invention use the rolling mold shown in Fig. 6 to obtain by the effect of rolling figure of rolled piece.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one: as shown in the figure, utilizes the detailed process of this milling method rolling asymmetric shaft as shown in Figure 1 as follows:
(1), at one of rolling mold 1 shaft part position 2 is rolled and is arranged the flat wedge 3 of spline-simulating, the length L of the tooth depth h of each tooth to be 1.5mm, facewidth w be 20mm, tooth top on flat wedge 3
1for the length L of 10mm, tooth root
2for 30mm, the incline direction of flat wedge 3 is consistent with by rolled piece end face flow direction, and the tiltangleθ arranging flat wedge 3 is 4 °;
(2), 1050 DEG C will be heated to by rolled piece, and by the axial admission device on cross wedge rolling machine, being sent to by rolled piece in this rolling mold 1 after heating is rolled, during rolling, flat wedge 3 is nipped by the unshaped shaft part of rolled piece, and along with the carrying out of rolling, be bulldozed by the shaping wedge 4 that deformation section rolled piece being positioned at flat wedge 3 place is rolled on mould, finally obtain qualified asymmetric shaft as shown in Figure 1.
Embodiment two: as shown in the figure, utilizes the detailed process of this milling method rolling asymmetric shaft as shown in Figure 1 as follows:
(1), at one of rolling mold 1 shaft part position 2 is rolled and is arranged the flat wedge 3 of spline-simulating, the length L of the tooth depth h of each tooth to be 2.5mm, facewidth w be 30mm, tooth top on flat wedge 3
1for the length L of 20mm, tooth root
2for 50mm, the incline direction of flat wedge 3 is consistent with by rolled piece end face flow direction, and the tiltangleθ arranging flat wedge 3 is 8 °;
(2), 1200 DEG C will be heated to by rolled piece, and by the axial admission device on cross wedge rolling machine, being sent to by rolled piece in this rolling mold 1 after heating is rolled, during rolling, flat wedge 3 is nipped by the unshaped shaft part of rolled piece, and along with the carrying out of rolling, be bulldozed by the shaping wedge 4 that deformation section rolled piece being positioned at flat wedge 3 place is rolled on mould, finally obtain qualified asymmetric shaft as shown in Figure 1.
Embodiment three: as shown in the figure, utilizes the detailed process of this milling method rolling asymmetric shaft as shown in Figure 1 as follows:
(1), left and right two of rolling mold 1 shaft part position 2 is rolled and is arranged respectively the flat wedge 3 of spline-simulating, the length L of the tooth depth h of each tooth to be 0.8mm, facewidth w be 10mm, tooth top on flat wedge 3
1for the length L of 5mm, tooth root
2for 10mm, the incline direction of flat wedge 3 is consistent with by rolled piece end face flow direction, and arranges the tiltangleθ of the flat wedge 3 being positioned at left side
1be 3.2 °, be positioned at the tiltangleθ of the flat wedge 3 on right side
2it is 5 °;
(2), 950 DEG C will be heated to by rolled piece, and by the axial admission device on cross wedge rolling machine, being sent to by rolled piece in this rolling mold 1 after heating is rolled, during rolling, flat wedge 3 is nipped by the unshaped shaft part of rolled piece, and along with the carrying out of rolling, be bulldozed by the shaping wedge 4 that deformation section rolled piece being positioned at flat wedge 3 place is rolled on mould, finally obtain qualified asymmetric shaft as shown in Figure 1, effect of rolling as shown in Figure 8.
Embodiment four: as shown in the figure, utilizes the detailed process of this milling method rolling asymmetric shaft as shown in Figure 1 as follows:
(1), left and right two of rolling mold 1 shaft part position 2 is rolled and is arranged respectively the flat wedge 3 of spline-simulating, the length L of the tooth depth h of each tooth to be 2mm, facewidth w be 25mm, tooth top on flat wedge 3
1for the length L of 15mm, tooth root
2for 40mm, the incline direction of flat wedge 3 is consistent with by rolled piece end face flow direction, and arranges the tiltangleθ of the flat wedge 3 being positioned at left side
1be 4.8 °, be positioned at the tiltangleθ of the flat wedge 3 on right side
2it is 7 °;
(2), 1100 DEG C will be heated to by rolled piece, and by the axial admission device on cross wedge rolling machine, being sent to by rolled piece in this rolling mold 1 after heating is rolled, during rolling, flat wedge 3 is nipped by the unshaped shaft part of rolled piece, and along with the carrying out of rolling, be bulldozed by the shaping wedge 4 that deformation section rolled piece being positioned at flat wedge 3 place is rolled on mould, finally obtain qualified asymmetric shaft as shown in Figure 1, effect of rolling as shown in Figure 8.
Claims (2)
1. cross wedge rolling asymmetric shaft like members suppresses a method for axial float, it is characterized in that it comprises following concrete steps:
(1), at least one of rolling mold rolled shaft part position and arrange the flat wedge of at least one spline-simulating, the incline direction of flat wedge is consistent with by rolled piece end face flow direction, and arranges the tiltangleθ of flat wedge
ibe 3 ~ 9 °, on flat wedge, the tooth depth of each tooth is 0.5 ~ 2.5mm, the facewidth is 10 ~ 30mm, the length of tooth top is 5 ~ 20mm, the length of tooth root is 5 ~ 50mm;
(2), 900 ~ 1200 DEG C will be heated to by rolled piece, and by the axial admission device on cross wedge rolling machine, being sent in this rolling mold by rolled piece after heating is rolled, during rolling, flat wedge is nipped by the unshaped shaft part of rolled piece, and along with the carrying out of rolling, be bulldozed by the shaping wedge that deformation section rolled piece being positioned at flat wedge place is rolled on mould, finally obtain qualified asymmetric shaft like members.
2. a kind of cross wedge rolling asymmetric shaft like members as claimed in claim 1 suppresses the method for axial float, it is characterized in that the flat wedge being arranged a spline-simulating by rolling shaft part position of described rolling mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210229876.4A CN102744262B (en) | 2012-07-02 | 2012-07-02 | Method for restraining axial floating of transverse wedge rolling unsymmetrical shaft part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210229876.4A CN102744262B (en) | 2012-07-02 | 2012-07-02 | Method for restraining axial floating of transverse wedge rolling unsymmetrical shaft part |
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| CN102744262A CN102744262A (en) | 2012-10-24 |
| CN102744262B true CN102744262B (en) | 2014-12-24 |
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| CN201210229876.4A Active CN102744262B (en) | 2012-07-02 | 2012-07-02 | Method for restraining axial floating of transverse wedge rolling unsymmetrical shaft part |
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| CN104722578A (en) * | 2015-04-14 | 2015-06-24 | 宣城市泰维特精工科技有限公司 | Rolling device for rod piece forging blank and rod piece forming method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1334263A (en) * | 1970-06-19 | 1973-10-17 | Vyzk Ustav Tvarecich Stroju | Tool for cross wedge rolling of non-symmetrical rolled owrkpieces |
| US4121443A (en) * | 1976-10-20 | 1978-10-24 | Vyzkumny Ustav Tvarecich Stroju A Technologie Tvareni | Method of and apparatus for rolling long work pieces |
| CN101658858A (en) * | 2009-09-16 | 2010-03-03 | 北京科技大学 | Cross wedge rolling forming method of hollow shaft head of automobile rear bridge |
| CN101722185A (en) * | 2009-11-26 | 2010-06-09 | 宁波大学 | Method for rolling feed head-free cross wedge rolling of axial parts |
| CN101758149A (en) * | 2010-01-29 | 2010-06-30 | 山东中兴汽车零部件有限公司 | Rotator shaft residual material-free obliquely and transversely rolling method and special mold |
| CN102166609A (en) * | 2010-12-27 | 2011-08-31 | 宁波大学 | Asymmetric shaft parts cross wedge rolling and stable rolling method |
-
2012
- 2012-07-02 CN CN201210229876.4A patent/CN102744262B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1334263A (en) * | 1970-06-19 | 1973-10-17 | Vyzk Ustav Tvarecich Stroju | Tool for cross wedge rolling of non-symmetrical rolled owrkpieces |
| US4121443A (en) * | 1976-10-20 | 1978-10-24 | Vyzkumny Ustav Tvarecich Stroju A Technologie Tvareni | Method of and apparatus for rolling long work pieces |
| CN101658858A (en) * | 2009-09-16 | 2010-03-03 | 北京科技大学 | Cross wedge rolling forming method of hollow shaft head of automobile rear bridge |
| CN101722185A (en) * | 2009-11-26 | 2010-06-09 | 宁波大学 | Method for rolling feed head-free cross wedge rolling of axial parts |
| CN101758149A (en) * | 2010-01-29 | 2010-06-30 | 山东中兴汽车零部件有限公司 | Rotator shaft residual material-free obliquely and transversely rolling method and special mold |
| CN102166609A (en) * | 2010-12-27 | 2011-08-31 | 宁波大学 | Asymmetric shaft parts cross wedge rolling and stable rolling method |
Non-Patent Citations (1)
| Title |
|---|
| 不对称轴类件楔横轧工艺与孔型设计;黄德政等;《二汽科技》;19881226(第6期);第22-29页 * |
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Effective date of registration: 20170210 Address after: 246003 Anhui Province, Anqing City Yingjiang District Lingang Industrial Park, North Ring Road No. 2 Patentee after: Anqing Zhenfa Auto Parts Technology Co. Ltd. Address before: 315211 Zhejiang Province, Ningbo Jiangbei District Fenghua Road No. 818 Patentee before: Ningbo University |
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Effective date of registration: 20200812 Address after: No.2, industrial park, economic development zone, Anqing City, Anhui Province Patentee after: Anqing Zhenfa Machinery Technology Co., Ltd Address before: 246003 Anhui Province, Anqing City Yingjiang District Lingang Industrial Park, North Ring Road No. 2 Patentee before: ANQING ZHENFA AUTO PARTS TECHNOLOGY Co.,Ltd. |