CN102941308B - Thermal-forging forming production method for cam blank of cam shaft of automobile engine - Google Patents
Thermal-forging forming production method for cam blank of cam shaft of automobile engine Download PDFInfo
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- CN102941308B CN102941308B CN201210464951.5A CN201210464951A CN102941308B CN 102941308 B CN102941308 B CN 102941308B CN 201210464951 A CN201210464951 A CN 201210464951A CN 102941308 B CN102941308 B CN 102941308B
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Abstract
The invention relates to a thermal-forging forming production method for a cam blank of a cam shaft of an automobile engine, comprising the following steps of: cutting station of a multi-station thermal-forging machine: heating a material with specified diameter to a certain temperature between 300-900 DEG C by secondary medium-high frequency heating between a cutting mold and a feeding wheel, then conveying the material to the cutting mold and cutting the material into a middle workpiece A with the length meeting the requirement; conveying the middle workpiece A to shaping molds on five stations, processing the middle workpiece A, impressing a recognition identifier on one plane of the processed workpiece, finally conveying the middle workpiece into a mold on a sixth station, using a punching rod to carry out leveling and preparing a finished product. The thermal-forging forming production method has the advantages that the heating temperature of the material can be controlled to be 300-900 DEG C, the internal organization structure of the material is not changed, and the subsequent heat treatment processing is simple; and the smoothness of the surface of the appearance is greatly improved and the size accuracy is ensured.
Description
Technical field
The present invention relates to a kind of production method of camshaft of car engine, relate in particular to a kind of temperature requirement and be controlled at 300-900 Celsius temperature, the camshaft of car engine cam blank temperature upsetting forming production process that raw-material institutional framework does not change.
Background technology
At present, camshaft of car engine was developed to combined type by former monoblock type, and its advantage is to reduce cost, and weight reduction is easy to large batch of production, but current cam blank is all bearing steels, produces with multistation hot forging process.Material temperature requires to be heated to more than 1150 degrees Celsius.So not only energy resource consumption is large, easily decarburization, and raw material tissue changes, and the highly difficult large cost high efficiency of follow-up heat treatment requirements is low.
Summary of the invention
For the problems referred to above, main purpose of the present invention is to provide a kind of temperature requirement to be controlled at 300-900 Celsius temperature, the camshaft of car engine cam blank temperature upsetting forming production process that raw-material institutional framework does not change.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of camshaft of car engine cam blank temperature upsetting forming production process, described method comprises the steps:
(1), the cut-out station of multiplex's megadyne temperature upsetting machine: cutting off between mould and drawing-inroller, pass through in secondary or high-frequency heating, the material of specified diameter is heated to a certain temperature between 300-900 DEG C, deliver to blank mould again and be cut to the satisfactory intermediate piece A of length, intermediate piece A presents cylindric;
(2), the intermediate piece A being processed in step (1) is delivered to the mould that is positioned at the first station, to intermediate piece A, one end upsetting pressure becomes chamfering and the second moulding center positioning hole, other end punching press the first moulding center positioning hole, making one end has chamfering two ends to have the intermediate piece B of center positioning hole;
(3), the intermediate piece B being processed in step (2) is delivered to the shaping mold being positioned on the second station, to intermediate piece B temperature, to become one end be U-shaped cam in upsetting, the intermediate piece C that the other end is chamfering;
(4), the intermediate piece C being processed in step (3) is delivered to the mould that is positioned at the 3rd station carry out warm upsetting squeeze and press that to make it external form full, there is the intermediate piece D of concave station at circle center, both sides;
(5), the intermediate piece D being processed in step (4) is delivered to the 4th station mould, middle circle is pushed inward with punching rod, the material of compressing into is extruded into die formation one end and falls in, the intermediate piece E that one end protrudes;
(6), the intermediate piece E being processed in step (5) is delivered to the mould of the 5th station, middle waste material is thrust and makes intermediate piece F with punching rod;
(7), the intermediate piece F being processed in step (6) is delivered in the mould of the 6th station, flatten and make finished product G with punching rod;
In described step (6) or step (7), in a plane of intermediate piece E or intermediate piece F, press identification marking, described identification marking is one or more points.
In specific embodiments of the invention, the length of the intermediate piece A in described step (1) is 24.5mm.
In specific embodiments of the invention, chamfering in described step (2) is chamfering R10, the specification of the first center moulding locating hole in described step (2) is Φ 5*150 °, and the specification of the second center moulding locating hole in described step (2) is Φ 5*150 °.
In specific embodiments of the invention, in described step (3), U-shaped cam is that a chamfer is 20 ± 3 °, and circular diameter is Φ 32mm, and cam direction total height is 36mm, the intermediate piece C that thickness is 10.9mm.
In specific embodiments of the invention, described step (4) specifically comprises the steps: intermediate piece C to deliver to the mould that is positioned at the 3rd station, carrying out warm upsetting squeeze presses and makes it circular diameter and reach Φ 32.4mm, cam direction total height is 37.8mm, and thickness is that 10.7mm two ends fall in that step is respectively Φ 23*1, Φ 23*0.5 makes intermediate piece D.
In specific embodiments of the invention, described step (5) is delivered to intermediate piece D the mould that is positioned at the 4th station, carries out warm upsetting squeeze pressure one end endoporus of circle is rushed in, and the other end protrudes makes intermediate piece E.
In specific embodiments of the invention, described step (5) is delivered to intermediate piece D the mould that is positioned at the 4th station, carrying out warm upsetting squeeze pressure makes diameter of a circle reach Φ 33.2mm, cam limit total height is 38.4mm, thickness is 10.7mm, it is Φ 22.9*5 that one end endoporus is rushed in step, and the other end protrudes Φ 15*9 and makes intermediate piece E.
In specific embodiments of the invention, described step delivers to by intermediate piece E the mould that is positioned at the 5th station in (6), middle waste material is cut off with punching rod, making it to make endoporus is Φ 22.7mm through hole, and press mark on a face, circular diameter is Φ 33.2mm, and cam direction total height is 38.40mm, the intermediate piece F that thickness is 10.7mm.
In specific embodiments of the invention, in described step (7), intermediate piece F is delivered in the mould of the 6th station, flatten with punching rod that to make diameter be that Φ 33.25mm cam direction total height is 38.45mm, thickness is 10.65mm, and endoporus is the finished product G of Φ 22.7mm.
Positive progressive effect of the present invention is: the present invention and existing similar technique comparison, have advantages of as follows: material heating-up temperature of the present invention can be controlled in 300-900 DEG C, has saved the energy; Yin Wendu of the present invention is below 900 DEG C, and the internal organizational structure of material does not change, and subsequent heat treatment processing is simple; Appearance surfaces fineness improves greatly, and dimensional accuracy is guaranteed; The product that the present invention produces with warm upsetting moulding process, uses through reality, and it is high a lot of that efficiency and quality technique is before wanted, and society and economic benefit are obvious.Brief description of the drawings
Fig. 1 is the structural representation of the intermediate piece A of the warm upsetting moulding process production of invention;
Fig. 2 is the structural representation of the intermediate piece B of the warm upsetting moulding process production of invention;
The structural representation of the one side of the intermediate piece C that the warm upsetting moulding process that Fig. 3-1 is invention is produced;
The structural representation of the another side of the intermediate piece C that the warm upsetting moulding process that Fig. 3-2 are invention is produced;
Fig. 3-3 are the C-C cutaway view of Fig. 3-2;
The structural representation of the intermediate piece D that the warm upsetting moulding process that Fig. 4-1 is invention is produced;
Fig. 4-2 are the D-D cutaway view of Fig. 4-1;
The structural representation of the intermediate piece E that the warm upsetting moulding process that Fig. 5-1 is invention is produced;
Fig. 5-2 are the E-E cutaway view of Fig. 5-1;
The structural representation of the intermediate piece F that the warm upsetting moulding process that Fig. 6-1 is invention is produced;
Fig. 6-2 are the F-F cutaway view of Fig. 6-1;
Fig. 7 is the finished product structure schematic diagram that the warm upsetting moulding process of invention is produced.
Detailed description of the invention
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
Fig. 1 is the structural representation of the intermediate piece A of the warm upsetting moulding process production of invention, be illustrated in figure 1 a cylindric cylinder, the concrete cut-out station that adopts multiplex's megadyne temperature upsetting machine, cutting off between mould and drawing-inroller, pass through in secondary or high-frequency heating, the material that intermediate piece A is adopted is heated to a certain temperature between 300-900 DEG C, in the present invention, specifically can select 400 DEG C, 500 DEG C, 600 DEG C, 700 DEG C are waited any one temperature between 300-900 DEG C, deliver to again blank mould and be cut to the satisfactory intermediate piece A of length, intermediate piece A presents cylindric, in the present invention, the length of intermediate piece A is processed into 24.5mm.
Fig. 2 is the structural representation of the intermediate piece B of the warm upsetting moulding process production of invention; The concrete procedure of processing of intermediate piece B is: the intermediate piece A being processed in step (1) is delivered to the mould that is positioned at the first station, to intermediate piece A, one end upsetting pressure becomes chamfering and the second moulding center positioning hole 102, other end punching press the first moulding center positioning hole 101, making one end has chamfering 103 two ends to have the intermediate piece B of center positioning hole (being respectively the first moulding center positioning hole 101 and the second moulding center positioning hole 102); In Fig. 2, chamfering 103 is positioned at that one end of the second moulding center positioning hole 102.
In specific embodiment of the invention process, chamfering 103 is elected chamfering R10 as, and the specification of the first center moulding locating hole 101 is Φ 5*150 °, and the specification of the second center moulding locating hole 102 is Φ 5*150 °.
In specific embodiment of the invention process, diameter and angle that the specification of the first center moulding locating hole 101 and the second center moulding locating hole 102 also can be set as wanting arbitrarily, energy positioning instant can.
The structural representation of the one side of the intermediate piece C that the warm upsetting moulding process that Fig. 3-1 is invention is produced; The structural representation of the another side of the intermediate piece C that the warm upsetting moulding process that Fig. 3-2 are invention is produced; Fig. 3-3 are the C-C cutaway view of Fig. 3-2;
The intermediate piece B being processed into is delivered to the shaping mold being positioned on the second station, to intermediate piece B temperature, to become one end be U-shaped cam 201 in upsetting, the intermediate piece C that the other end is chamfering; Above-mentioned U-shaped cam is that a chamfer is 20 ± 3 °, and circular diameter is Φ 32mm, and cam direction total height is 36mm, the intermediate piece C that thickness is 10.9mm.The one side of intermediate piece C comprises chamfering, and another side does not comprise chamfering, is only to comprise center positioning hole 102.
The structural representation of the intermediate piece D that the warm upsetting moulding process that Fig. 4-1 is invention is produced; Fig. 4-2 are the D-D cutaway view of Fig. 4-1; The intermediate piece C being processed into is delivered to the mould that is positioned at the 3rd station and carry out warm upsetting squeeze and press that to make it external form full, there is the intermediate piece D of concave station at circle center, both sides;
In specific embodiment of the invention process, specifically can operate as follows: intermediate piece C is delivered to the mould that is positioned at the 3rd station, carrying out warm upsetting squeeze presses and makes it circular diameter and reach Φ 32.4mm, cam direction total height is 37.8mm, and thickness is that 10.7mm two ends fall in that step 301,302 is respectively Φ 23*1, Φ 23*0.5 makes intermediate piece D.
The structural representation of the intermediate piece E that the warm upsetting moulding process that Fig. 5-1 is invention is produced; Fig. 5-2 are the E-E cutaway view of Fig. 5-1; The intermediate piece D being processed into is delivered to the 4th station mould, with punching is excellent, middle circle is pushed inward, the material of compressing into is extruded into die formation one end and falls in, the intermediate piece E that one end protrudes; Intermediate piece D delivers to the mould that is positioned at the 4th station, carrying out warm upsetting squeeze pressure makes diameter of a circle reach Φ 33.2mm, cam limit total height is 38.4mm, and thickness is 10.7mm, and it is Φ 22.9*5 that one end endoporus is rushed in step, in Fig. 5-2, rushing in step is the mark 402 in figure, and the other end protrudes Φ 15*9 and makes intermediate piece E, and outline, the interior profile of intermediate piece E are all provided with rounding, in Fig. 5-2, the part protruding be in figure, mark 401.
Intermediate piece E from the intermediate piece A of Fig. 1 to Fig. 5-1, total constancy of volume.
The structural representation of the intermediate piece F that the warm upsetting moulding process that Fig. 6-1 is invention is produced; Fig. 6-2 are the F-F cutaway view of Fig. 6-1; The intermediate piece E being processed into is delivered to the mould of the 5th station, middle waste material is thrust and makes intermediate piece F with punching rod;
Intermediate piece E is delivered to the mould that is positioned at the 5th station, middle waste material is cut off with punching rod, making it to make endoporus is Φ 22.7mm through hole 502, and press mark on a face, circular diameter is Φ 33.2mm, cam direction total height is 38.40mm, the intermediate piece F that thickness is 10.7mm.
Fig. 7 is the finished product structure schematic diagram that the warm upsetting moulding process of invention is produced.Intermediate piece F is delivered in the mould of the 6th station, flatten that to make diameter be that Φ 33.25mm cam direction total height is 38.45mm with punching rod, thickness is 10.65mm, and endoporus is the finished product G of Φ 22.7mm.
In a plane of intermediate piece E or intermediate piece F, press identification marking 501, identification marking 501 is one or more points.
In above-mentioned specific implementation process, inner circle size, excircle configuration size, inner bore chamfering and outline chamfering all can be implemented to reach to meet drawing requirement by drawing on the 3rd station to the six stations.
All sizes in above-mentioned detailed description of the invention are the cam of engine camshaft blank of a model of temperature upsetting molding production process production of the present invention, and production technology of the present invention can be produced the cam of camshaft blank of various models.
Material heating-up temperature of the present invention can be controlled in 300-900 DEG C, has saved the energy; Yin Wendu of the present invention is below 900 DEG C, and the internal organizational structure of material does not change, and subsequent heat treatment processing is simple; Appearance surfaces fineness improves greatly, and dimensional accuracy is guaranteed; The product that the present invention produces with warm upsetting moulding process, uses through reality, and it is high a lot of that efficiency and quality technique is before wanted, and society and economic benefit are obvious.
More than show and described general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (9)
1. a camshaft of car engine cam blank temperature upsetting forming production process, is characterized in that: described method comprises the steps:
(1), the cut-out station of multiplex's megadyne temperature upsetting machine: cutting off between mould and drawing-inroller, pass through in secondary or high-frequency heating, the material of specified diameter is heated to a certain temperature between 300-900 DEG C, deliver to blank mould again and be cut to the satisfactory intermediate piece A of length, intermediate piece A presents cylindric;
(2), the intermediate piece A being processed in step (1) is delivered to the mould that is positioned at the first station, to intermediate piece A, one end upsetting pressure becomes chamfering and the second moulding center positioning hole, other end punching press the first moulding center positioning hole, making one end has chamfering two ends to have the intermediate piece B of center positioning hole;
(3), the intermediate piece B being processed in step (2) is delivered to the shaping mold being positioned on the second station, to intermediate piece B temperature, to become one end be U-shaped cam in upsetting, the intermediate piece C that the other end is chamfering;
(4), the intermediate piece C being processed in step (3) is delivered to the mould that is positioned at the 3rd station carry out warm upsetting squeeze and press that to make it external form full, there is the intermediate piece D of concave station at circle center, both sides;
(5), the intermediate piece D being processed in step (4) is delivered to the 4th station mould, middle circle is pushed inward with punching rod, the material of compressing into is extruded into die formation one end and falls in, the intermediate piece E that one end protrudes;
(6), the intermediate piece E being processed in step (5) is delivered to the mould of the 5th station, middle waste material is thrust and makes intermediate piece F with punching rod;
(7), the intermediate piece F being processed in step (6) is delivered in the mould of the 6th station, flatten and make finished product G with punching rod;
In described step (6) or step (7), in a plane of intermediate piece E or intermediate piece F, press identification marking, described identification marking is one or more points.
2. camshaft of car engine cam blank temperature upsetting forming production process according to claim 1, is characterized in that: the length of the intermediate piece A in described step (1) is 24.5mm.
3. camshaft of car engine cam blank temperature upsetting forming production process according to claim 1, it is characterized in that: the chamfering in described step (2) is chamfering R10, the specification of the first center moulding locating hole in described step (2) is Φ 5*150 °, and the specification of the second center moulding locating hole in described step (2) is Φ 5*150 °.
4. camshaft of car engine cam blank temperature upsetting forming production process according to claim 1, it is characterized in that: in described step (3), U-shaped cam is that a chamfer is 20 ± 3 °, circular diameter is Φ 32mm, and cam direction total height is 36mm, the intermediate piece C that thickness is 10.9mm.
5. camshaft of car engine cam blank temperature upsetting forming production process according to claim 1, it is characterized in that: described step (4) specifically comprises the steps: intermediate piece C to deliver to the mould that is positioned at the 3rd station, carrying out warm upsetting squeeze presses and makes it circular diameter and reach Φ 32.4mm, cam direction total height is 37.8mm, and thickness is that 10.7mm two ends fall in that step is respectively Φ 23*1, Φ 23*0.5 makes intermediate piece D.
6. camshaft of car engine cam blank temperature upsetting forming production process according to claim 1, it is characterized in that: described step (5) is delivered to intermediate piece D the mould that is positioned at the 4th station, carry out warm upsetting squeeze pressure one end endoporus of circle is rushed in, the other end protrudes makes intermediate piece E.
7. camshaft of car engine cam blank temperature upsetting forming production process according to claim 6, it is characterized in that: described step (5) is delivered to intermediate piece D the mould that is positioned at the 4th station, carrying out warm upsetting squeeze pressure makes diameter of a circle reach Φ 33.2mm, cam limit total height is 38.4mm, thickness is 10.7mm, it is Φ 22.9*5 that one end endoporus is rushed in step, and the other end protrudes Φ 15*9 and makes intermediate piece E.
8. camshaft of car engine cam blank temperature upsetting forming production process according to claim 1, it is characterized in that: described step delivers to by intermediate piece E the mould that is positioned at the 5th station in (6), middle waste material is cut off with punching rod, making it to make endoporus is Φ 22.7mm through hole, and press mark on a face, circular diameter is Φ 33.2mm, and cam direction total height is 38.40mm, the intermediate piece F that thickness is 10.7mm.
9. camshaft of car engine cam blank temperature upsetting forming production process according to claim 1, it is characterized in that: in described step (7), intermediate piece F is delivered in the mould of the 6th station, flatten with punching rod that to make diameter be that Φ 33.25mm cam direction total height is 38.45mm, thickness is 10.65mm, and endoporus is the finished product G of Φ 22.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210464951.5A CN102941308B (en) | 2012-11-16 | 2012-11-16 | Thermal-forging forming production method for cam blank of cam shaft of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210464951.5A CN102941308B (en) | 2012-11-16 | 2012-11-16 | Thermal-forging forming production method for cam blank of cam shaft of automobile engine |
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| Publication Number | Publication Date |
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| CN102941308A CN102941308A (en) | 2013-02-27 |
| CN102941308B true CN102941308B (en) | 2014-09-10 |
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| CN201210464951.5A Active CN102941308B (en) | 2012-11-16 | 2012-11-16 | Thermal-forging forming production method for cam blank of cam shaft of automobile engine |
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| EP1331052A2 (en) * | 2002-01-24 | 2003-07-30 | Nissan Motor Company, Limited | Production method of cam lobe piece of assembled camshaft |
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| CN101850399A (en) * | 2010-05-14 | 2010-10-06 | 付仕忠 | Process method for forging brake cam of automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT394330B (en) * | 1990-06-06 | 1992-03-10 | Miba Sintermetall Ag | METHOD FOR PRODUCING A CAMSHAFT |
| JP3405372B2 (en) * | 1994-10-11 | 2003-05-12 | 日本精工株式会社 | Manufacturing method of cam lobe for assembly |
| JPH09280013A (en) * | 1996-04-11 | 1997-10-28 | Mitsubishi Materials Corp | Cam piece for assembled camshaft |
| JPH09276976A (en) * | 1996-04-11 | 1997-10-28 | Mitsubishi Materials Corp | Production of cam piece for assembled cam shaft and hot-forging die used for the production |
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- 2012-11-16 CN CN201210464951.5A patent/CN102941308B/en active Active
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|---|---|---|---|---|
| CN1513094A (en) * | 2000-11-14 | 2004-07-14 | 本田技研工业株式会社 | Cam block and method for manufacturing the same |
| EP1331052A2 (en) * | 2002-01-24 | 2003-07-30 | Nissan Motor Company, Limited | Production method of cam lobe piece of assembled camshaft |
| CN100439661C (en) * | 2003-12-12 | 2008-12-03 | 本田技研工业株式会社 | Camshaft, method of manufacturing cam for camshaft, and method of manufacturing shaft for camshaft |
| CN101850399A (en) * | 2010-05-14 | 2010-10-06 | 付仕忠 | Process method for forging brake cam of automobile |
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| CN102941308A (en) | 2013-02-27 |
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Free format text: FORMER OWNER: ZHENG XIAOYUAN Effective date: 20140523 Owner name: ZHENG XIAOYUAN Free format text: FORMER OWNER: SHANGHAI HALONG AUTOMOBILE STANDARD PART CO., LTD. Effective date: 20140523 |
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Effective date of registration: 20140523 Address after: 317100 No. 107 Cultural Road, three County town, Zhejiang, Taizhou Applicant after: Zheng Xiaoyuan Address before: 201107 No. 88, Lane 10, Min Min Road, Minhang District, Shanghai Applicant before: Shanghai Halong Automobile Standard Part Co., Ltd. Applicant before: Zheng Xiaoyuan |
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