CN101850399A - Process method for forging brake cam of automobile - Google Patents
Process method for forging brake cam of automobile Download PDFInfo
- Publication number
- CN101850399A CN101850399A CN 201010172276 CN201010172276A CN101850399A CN 101850399 A CN101850399 A CN 101850399A CN 201010172276 CN201010172276 CN 201010172276 CN 201010172276 A CN201010172276 A CN 201010172276A CN 101850399 A CN101850399 A CN 101850399A
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- forging
- bar
- finished product
- brake cam
- shaft head
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- 238000005242 forging Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000007769 metal material Substances 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims description 9
- 238000009877 rendering Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Valve-Gear Or Valve Arrangements (AREA)
- Forging (AREA)
Abstract
The invention provides a process method for forging a brake cam of an automobile. The forging method comprises the following steps: step 1, cutting a cylindrical metal material into a bar with a required length according to the required length and diameter; step 2, putting the tip of the bar, which needs to be processed into an S-shaped shaft head part, into a medium frequency power supply, and heating to the temperature of 800-950 DEG C; step 3, taking out the heated bar, and placing the heated bar into an S-shaped shaft head mold, which is forged by utilizing a hydraulic set, to be forged into a cam shaft finished product blank at one step; and step 4, taking out the cam shaft finished product blank molded by forging, and utilizing a rotary sander to polish the blank so as to remove burrs and corners to obtain the brake cam shaft finished product. By adopting the method, the invention solves the problems of high energy consumption, large investment cost and large material consumption and loss caused by integral heating and repeated local heating and forging in the prior art, and has the obvious characteristics of reducing energy consumption by 70%, improving material utilization ratio by 25% and improving work efficiency by 3-4 times.
Description
Technical field
The present invention relates to a kind of manufacture method of auto parts machinery, specifically a kind of process of forging brake cam of automobile.
Background technology
Automobile camshaft is provided with " S " profile shaft head by an axostylus axostyle and forms in its termination, according to product quality and technological requirement, its axostylus axostyle and spindle nose must be to be the unitary whole parts, add man-hour, can only forge " S " profile shaft head in the axostylus axostyle termination, because different automobile models, the axostylus axostyle length of being processed is also different, traditional process one is with whole bar heating, forges bar portion and " S " head, the 2nd, with the local heating for multiple times of spindle nose, forging and molding repeatedly, cause power consumption high thus, material unaccounted-for (MUF) is big, and processing cost is also too high thereupon, and the work efficiency production capacity also is restricted simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of process of forging brake cam of automobile, can a forging molding, and only need local heat, have distinguishing feature energy-conservation, that lower consumption and reduce cost.
The present invention includes the metal bar material of camshaft workpiece, the process that is adopted is as follows:
Forging method divides the following step to carry out:
Step 1: press required length of automobile model and diameter, the cylinder metal material is cut into required length bar;
Step 2: the bar termination of need being processed into " S " profile shaft head position is put into intermediate frequency power supply and is heated to 800～950 ℃ of temperature;
Step 3: the bar after will heating takes out, and putting into the forging molding of " S " profile shaft head mould tool that forges by hydraulic test is camshaft finished product blank;
Step 4: the camshaft finished product blank of forging molding is taken out, adopt the abrasive machine polishing to remove the burr corner, promptly become the brake camshaft finished product.
Put into intermediate frequency power supply in the above-mentioned steps 2 and be heated to 800～950 ℃ of temperature, described temperature adopts inductor to set and control.
The heated length that intermediate frequency power supply is put in bar termination in the step 2 is controlled between 75～85mm.
Hydraulic test in the step 3 is the multicylinder hydraulic machine, and its master cylinder pressure is 20MPa, side cylinder pressure 18～20MPa.When forging, axostylus axostyle is arranged in an actor's rendering of an operatic tune of below, and spindle nose is arranged in the mould of forging and pressing.
In the step 3 " " profile shaft head mould tool is the mould that the lower end has axostylus axostyle an actor's rendering of an operatic tune to S.When forging, axostylus axostyle is arranged in an actor's rendering of an operatic tune of mould below, and spindle nose is arranged in the mould of forging and pressing.
In the step 3 " S " and profile shaft head mould tool when putting into workpiece and forge, should be earlier with mould and die preheating to 150～200 ℃, spray the forge hot lubricant simultaneously.
The present invention passes through technique scheme, because local heat is controlled at suitable temperature, both can satisfy one-time formed technological requirement, can control the medium oxidative horizon consumption loss of metal again, adopted the forging mold of tape spool bar an actor's rendering of an operatic tune in addition, make it to adapt to the different model processing of various length, can guarantee that thus various models all adopt the method for a local heat, and the length of heating spindle nose is controlled at certain limit, the forging pressure of setting according to heating-up temperature particularly, scientific and reasonable thus technology cooperates, having solved present whole heating and local heat causes power consumption high, loss is big and work efficiency is low, the problem that cost is high, compare with conventional art, because office's heating and temperature control is in the science scope, the workpiece yield strength is reduced, the oxide skin that produces is few, can not change the purpose of steel institutional framework, favourable prolongation die life, make mould consumption reduce 90%, stock utilization is brought up to more than 90% by 65%, power consumption reduces about 70%, and operating efficiency improves 3～4 times, and a machine tool two people's split runs can forge more than 550.
The specific embodiment
Embodiment 1: 15 tons of automobile axle brake camshafts of processing 2502Z24, and its length is 528mm, Φ 45mm, concrete steps are as follows:
Step 1:, cylinder metal is cut into the bar that meets length by above-mentioned model length and diameter; Step 2: the bar termination of need being processed into " S " profile shaft head position is put into intermediate frequency power supply and is heated to 930 ℃ of temperature, and temperature adopts inductor to set and control, and the length of its termination heating is 85mm; Step 3: the bar after will heating takes out, and putting into " S " profile shaft head mould tool one-shot forming of forging by hydraulic test is camshaft finished product blank, and the cylinder pressure of described hydraulic test is 20MPa, and side cylinder pressure is 20MPa; Step 4: the camshaft finished product blank of forging molding is taken out, adopt the abrasive machine polishing to remove the burr corner, i.e. production is the brake camshaft finished product.In the above-mentioned processing, " S " profile shaft head mould tool lower end in the described step 3 has axostylus axostyle an actor's rendering of an operatic tune, before putting into, the workpiece axostylus axostyle is encased inside lining bar, make the upper end of workpiece be positioned at forging mold, " S " profile shaft head mould tool in the step 3 is before putting into workpiece, elder generation is with mould and die preheating to 200 ℃ temperature, and spraying forge hot lubricant.
Embodiment 2: processing 3502KZD passenger vehicle back axle brake camshaft, and length is 450mm, Φ 45mm, concrete steps are as follows:
Step 1:, cylinder metal is cut into the bar that meets length by above-mentioned model length and diameter; Step 2: the bar termination of need being processed into " S " profile shaft head position is put into intermediate frequency power supply and is heated to 880 ℃ of temperature, and temperature adopts inductor to set and control, and the length of its termination heating is 80mm; Step 3: the bar after will heating takes out, and putting into " S " profile shaft head mould tool one-shot forming of forging by hydraulic test is camshaft finished product blank, and the cylinder pressure of described hydraulic test is 20MPa, and side cylinder pressure is 20MPa; Step 4: the camshaft finished product blank of forging molding is taken out, adopt the abrasive machine polishing to remove the burr corner, i.e. production is the brake camshaft finished product.In the above-mentioned processing, " S " profile shaft head mould tool lower end in the described step 3 has axostylus axostyle an actor's rendering of an operatic tune, before putting into, the workpiece axostylus axostyle is encased inside lining bar, make the upper end of workpiece be positioned at forging mold, " S " profile shaft head mould tool in the step 3 is before putting into workpiece, elder generation is with mould and die preheating to 180 ℃ temperature, and spraying forge hot lubricant.
Embodiment 3: processing 3501N bus front bridge brake camshaft, and length is 202mm, Φ 45mm, concrete steps are as follows:
Step 1:, cylinder metal is cut into the bar that meets length by above-mentioned model length and diameter; Step 2: the bar termination of need being processed into " S " profile shaft head position is put into intermediate frequency power supply and is heated to 820 ℃ of temperature, and temperature adopts inductor to set and control, and the length of its termination heating is 75mm; Step 3: the bar after will heating takes out, and putting into " S " profile shaft head mould tool one-shot forming of forging by hydraulic test is camshaft finished product blank, and the cylinder pressure of described hydraulic test is 20MPa, and side cylinder pressure is 18MPa; Step 4: the camshaft finished product blank of forging molding is taken out, adopt the abrasive machine polishing to remove the burr corner, i.e. production is the brake camshaft finished product.In the above-mentioned processing, " S " profile shaft head mould tool lower end in the described step 3 has axostylus axostyle an actor's rendering of an operatic tune, before putting into, the workpiece axostylus axostyle is encased inside lining bar, make the upper end of workpiece be positioned at forging mold, " S " profile shaft head mould tool in the step 3 is before putting into workpiece, elder generation is with mould and die preheating to 150 ℃ temperature, and spraying forge hot lubricant.
Claims (6)
1. the process of a forging brake cam of automobile comprises the metal bar material of camshaft workpiece, and it is characterized in that: forging method divides the following step to carry out:
Step 1: press required length of automobile model and diameter, the cylinder metal material is cut into required length bar;
Step 2: the bar termination of need being processed into " S " profile shaft head position is put into intermediate frequency power supply and is heated to 800～950 ℃ of temperature;
Step 3: the bar after will heating takes out, and putting into the forging molding of " S " profile shaft head mould tool that forges by hydraulic test is camshaft finished product blank;
Step 4: the camshaft finished product blank of forging molding is taken out, adopt the abrasive machine polishing to remove the burr corner, promptly become the brake camshaft finished product.
2. the process of forging brake cam of automobile according to claim 1 is characterized in that: put into intermediate frequency power supply in the step 2 and be heated to 800～950 ℃ of temperature, described temperature employing inductor setting and control.
3. the process of forging brake cam of automobile according to claim 1, it is characterized in that: the heated length that intermediate frequency power supply is put in the bar termination in the step 2 is controlled between 75～85mm.
4. the process of forging brake cam of automobile according to claim 1, it is characterized in that: the hydraulic test in the step 3 is the multicylinder hydraulic machine, its master cylinder pressure is 20MPa, side cylinder pressure 18～20MPa.
5. the process of forging brake cam of automobile according to claim 1 is characterized in that: in the step 3 " " profile shaft head mould tool is the mould that the lower end has axostylus axostyle an actor's rendering of an operatic tune to S.
6. the process of forging brake cam of automobile according to claim 1 is characterized in that: in the step 3 " S " and profile shaft head mould tool when putting into workpiece and forge, should be earlier with mould and die preheating to 150～200 ℃, spray the forge hot lubricant simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010172276 CN101850399A (en) | 2010-05-14 | 2010-05-14 | Process method for forging brake cam of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010172276 CN101850399A (en) | 2010-05-14 | 2010-05-14 | Process method for forging brake cam of automobile |
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| CN101850399A true CN101850399A (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201010172276 Pending CN101850399A (en) | 2010-05-14 | 2010-05-14 | Process method for forging brake cam of automobile |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764968A (en) * | 2012-06-26 | 2012-11-07 | 昌利锻造有限公司 | Idler shaft processing method |
| CN102941308A (en) * | 2012-11-16 | 2013-02-27 | 上海哈隆汽车标准件有限公司 | Thermal-forging forming production method for cam blank of cam shaft of automobile engine |
| CN102989951A (en) * | 2012-08-22 | 2013-03-27 | 昌利锻造有限公司 | Forging method of automotive camshaft |
| CN103240375A (en) * | 2013-05-08 | 2013-08-14 | 长沙市望城区誉诚机械有限公司 | Forging processing method of brake wheel |
| CN103878291A (en) * | 2014-03-27 | 2014-06-25 | 昆山土山建设部件有限公司 | Forging method of thrust wheel |
| CN104564923A (en) * | 2014-12-31 | 2015-04-29 | 东莞以利沙五金制品有限公司 | T-shaped flange and manufacturing method thereof |
| CN109433842A (en) * | 2018-10-27 | 2019-03-08 | 广东富华重工制造有限公司 | The hot extrusion molding method and extrusion die of camshaft |
| CN110695097A (en) * | 2019-09-11 | 2020-01-17 | 南京钢铁股份有限公司 | Non-quenched and tempered camshaft, manufacturing method of steel used for camshaft and manufacturing method of fine-grain forging piece of camshaft |
| CN114893549A (en) * | 2022-05-07 | 2022-08-12 | 湖北中尔智能装备科技有限公司 | Automobile hollow brake camshaft and forging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2531899Y (en) * | 2001-10-30 | 2003-01-22 | 宋玉泉 | Continuous lcoal plasticity precise moulding device for car axle shaft gear |
| JP2006169961A (en) * | 2003-12-12 | 2006-06-29 | Honda Motor Co Ltd | Method of manufacturing cam for camshaft |
| CN100464879C (en) * | 2006-08-28 | 2009-03-04 | 北京科技大学 | Precision Forming Method of Camshaft by Cross Wedge Rolling |
| CN101579800A (en) * | 2009-06-12 | 2009-11-18 | 大丰市中德精锻件有限公司 | Warm and cold forging process for precision forging piece of integrated long-shaft inner ball cage |
-
2010
- 2010-05-14 CN CN 201010172276 patent/CN101850399A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2531899Y (en) * | 2001-10-30 | 2003-01-22 | 宋玉泉 | Continuous lcoal plasticity precise moulding device for car axle shaft gear |
| JP2006169961A (en) * | 2003-12-12 | 2006-06-29 | Honda Motor Co Ltd | Method of manufacturing cam for camshaft |
| CN100464879C (en) * | 2006-08-28 | 2009-03-04 | 北京科技大学 | Precision Forming Method of Camshaft by Cross Wedge Rolling |
| CN101579800A (en) * | 2009-06-12 | 2009-11-18 | 大丰市中德精锻件有限公司 | Warm and cold forging process for precision forging piece of integrated long-shaft inner ball cage |
Non-Patent Citations (1)
| Title |
|---|
| 《机械工人(热加工)》 20061130 杨震 汽车制动凸轮轴的摆辗锻造新工艺 , 第11期 2 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764968A (en) * | 2012-06-26 | 2012-11-07 | 昌利锻造有限公司 | Idler shaft processing method |
| CN102989951A (en) * | 2012-08-22 | 2013-03-27 | 昌利锻造有限公司 | Forging method of automotive camshaft |
| CN102941308A (en) * | 2012-11-16 | 2013-02-27 | 上海哈隆汽车标准件有限公司 | Thermal-forging forming production method for cam blank of cam shaft of automobile engine |
| CN102941308B (en) * | 2012-11-16 | 2014-09-10 | 郑小元 | Thermal-forging forming production method for cam blank of cam shaft of automobile engine |
| CN103240375A (en) * | 2013-05-08 | 2013-08-14 | 长沙市望城区誉诚机械有限公司 | Forging processing method of brake wheel |
| CN103878291A (en) * | 2014-03-27 | 2014-06-25 | 昆山土山建设部件有限公司 | Forging method of thrust wheel |
| CN104564923A (en) * | 2014-12-31 | 2015-04-29 | 东莞以利沙五金制品有限公司 | T-shaped flange and manufacturing method thereof |
| CN109433842A (en) * | 2018-10-27 | 2019-03-08 | 广东富华重工制造有限公司 | The hot extrusion molding method and extrusion die of camshaft |
| CN110695097A (en) * | 2019-09-11 | 2020-01-17 | 南京钢铁股份有限公司 | Non-quenched and tempered camshaft, manufacturing method of steel used for camshaft and manufacturing method of fine-grain forging piece of camshaft |
| CN114893549A (en) * | 2022-05-07 | 2022-08-12 | 湖北中尔智能装备科技有限公司 | Automobile hollow brake camshaft and forging method |
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Open date: 20101006 |