CN102166615A - Forging process for piston toothed part of automobile steering box - Google Patents
Forging process for piston toothed part of automobile steering box Download PDFInfo
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- CN102166615A CN102166615A CN2011100356987A CN201110035698A CN102166615A CN 102166615 A CN102166615 A CN 102166615A CN 2011100356987 A CN2011100356987 A CN 2011100356987A CN 201110035698 A CN201110035698 A CN 201110035698A CN 102166615 A CN102166615 A CN 102166615A
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- forging
- gear
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- automobile steering
- tooth
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Abstract
The invention discloses a forging process for a piston toothed part of an automobile steering box. The forging process comprises the following steps of: heating; making a blank; preforging; trimming; cutting a machining allowance left on a gear after the forging is finished; and performing surface treatment to finally obtain a qualified forge piece. By applying the forging process, the machining allowance is reduced firstly, the processing time is shortened, the processing efficiency is increased and the processing cost is reduced; metal stream layers on the surface of the gear are distributed along the shape of the gear evenly, the thickness of the metal stream layers at the tooth top, the tooth profile and the tooth root as well as the tooth groove part of the gear are basically equal, the machining alliance is less in the cutting process of a toothed part, a cutter is seldom adhered, and the metal layer at the toothed part can be almost preserved completely, the tooth top and the tooth root of the gear have the same strength after being processed, therefore, the strength of the gear can be improved further; in addition, the forging of a toothed shape can save materials and reduce product cost.
Description
Technical field
The present invention relates to the automobile metal parts and forge processing technique field, especially a kind of piston of automobile steering device tooth portion Forging Technology.
Background technology
The steering box piston is one of strength member in the steering gear, can mesh with other tooth sector in order to make the steering box piston, need on the steering box piston gear be set.For the consideration of factors such as service life, space, the gear on the steering box piston is not to obtain by gear of additional fastening, but need the processing by series form on the steering box piston.At present the forming process of the gear on the steering box piston is: at first by the forging mode not with the steering box piston of gear, on the steering box piston, carry out machined by the machining mode again and obtain gear (seeing Fig. 1, Fig. 2 and Fig. 3).This technology has following shortcoming:
The first, on the steering box piston, do not forge gear during owing to forging, the workload of cutting when not only making machined is big, has wasted raw material, has reduced working (machining) efficiency, has improved manufacturing cost; And most of metal streamline is cut off, and causes intensity, toughness and the mechanical property of gear to reduce;
Second, the steering box piston that obtains by forging, though its case hardness height, but its hardness of center from the surface of axle to axle can progressively reduce, because chipping allowance is big and the hardness skewness of metal, when carrying out machining, cause sticking cutter easily, not only influence stock-removing efficiency, and the gear poor mechanical property that obtains, service life is low.
Summary of the invention
Technical assignment of the present invention is at not enough in the above-mentioned technology, and a kind of piston of automobile steering device tooth portion Forging Technology is provided.
The technical scheme that technical solution problem of the present invention is adopted is: piston of automobile steering device tooth portion Forging Technology, may further comprise the steps, and (1) heating process is about to initial blank and is being heated to 1150 ℃～1300 ℃; (2) preforming is about to the initial blank jumping-up, obtains prefabricated blank, so that better remove the oxide skin of blank surface and make base shape meet piston of automobile steering device more; (3) blocking operation is about to prefabricated blank and puts into blocker, by the volume of blocking reasonable distribution blank, obtains the pre-forging of gear original shape; (4) finish-forging operation is about to pre-forging and puts into finisher, makes pre-forging continue distortion and obtains finish-forging spare, just has the piston of automobile steering device of gear; (5) side cut operation is promptly cut edge to finish-forging spare; (6) forging finishes to leave for mach cutting output on the backgear, and the cutting output that leaves on the gear is carried out machining, does the surface processing after the machining, obtains qualified forging.
The thickness of the mach cutting output of confession that leaves on the described gear is 1.5mm-4mm.
Described blocker and finisher are formed by upper die and lower die, have the profile of tooth impression according to the design of piston of automobile steering device finished product gear profile on the described upper die and lower die.
The beneficial effect that the present invention can bring is:
One, at first makes mach chipping allowance reduce, shortened process time, improved working (machining) efficiency, reduced processing cost;
Two, the metal streamline layer of gear surface is evenly distributed along the shape of gear, the thickness of the metal streamline layer at the tooth top position of gear, flank profil position, tooth root position and teeth groove position is equal substantially, allowance is few during tooth portion machining, not only be not easy sticking cutter, and make that the metal streamline layer at gear position can complete substantially being kept, process back-geared tooth top and have identical intensity, can improve the intensity of gear with the tooth root position.
Three, forging of profile of tooth can economical with materials, reduces the cost of product.
Description of drawings
Fig. 1, when not forging gear in the past, the forging front view;
Fig. 2, when not forging gear in the past, the forging left view
Fig. 3, when not forging gear in the past, forging A-A is to cutaway view.
Fig. 4, when the present invention forges gear, the forging front view
Fig. 5, when the present invention forges gear, the forging left view
Fig. 6, when the present invention forges gear, forging A-A is to cutaway view.
The structure diagram of Fig. 7, blocker.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is done following detailed description:
The invention discloses piston of automobile steering device tooth portion Forging Technology shown in top accompanying drawing, may further comprise the steps, (1) heating process is about to initial blank and is being heated to 1150 ℃～1300 ℃; (2) preforming is about to the initial blank jumping-up, obtains prefabricated blank, so that better remove the oxide skin of blank surface and make base shape meet piston of automobile steering device more; (3) blocking operation is about to prefabricated blank and puts into blocker, by the volume of blocking reasonable distribution blank, obtains the pre-forging of gear original shape; (4) finish-forging operation is about to pre-forging and puts into finisher, makes pre-forging continue distortion and obtains finish-forging spare, just has the piston of automobile steering device of gear; (5) side cut operation is promptly cut edge to finish-forging spare; (6) forging finishes to leave for mach cutting output on the backgear, and the cutting output that leaves on the gear is carried out machining, does the surface processing after the machining, obtains qualified forging.
The thickness of the mach cutting output of confession that leaves on the described gear is 1.5mm-4mm.Cutting output forms the metal streamline layer at gear surface, shape along gear is evenly distributed, promptly the thickness at the metal streamline layer at tooth top position, flank profil position, tooth root position and the teeth groove position of gear is equal substantially, has identical intensity at the back-geared top of machining with root like this.
Described blocker and finisher are formed by patrix 1 and counterdie 2, have the profile of tooth impression according to the design of piston of automobile steering device finished product gear profile on described patrix 1 and the counterdie 2.Counterdie 2 is fixed on the forcing press mould bases during forging, and patrix 1 is installed on the press ram, and patrix 1 is along with slide block moves from top to bottom.
The present invention forges the initial profile of tooth of gear by improving the volume of blocking reasonable distribution blank, in the finish-forging process, can effectively avoid forging occur collapsing the angle, folding, can't forge forging defect such as profile of tooth fully.Behind the blocking pre-forging is put into finisher and make pre-forging continue distortion, obtain having the piston of automobile steering device of gear, forge on the completion backgear and reserve for mach cutting output.So at first make mach surplus reduce, shortened process time, improved working (machining) efficiency, reduced processing cost; Secondly forged gear by method of the present invention at workpiece itself, the metal streamline layer of gear surface is evenly distributed along the shape of gear, because the thickness of the metal streamline layer at tooth top position, flank profil position, tooth root position and the teeth groove position of gear is equal substantially, allowance is few during tooth portion machining, not only be not easy sticking cutter, and make that the metal streamline layer at gear position can complete substantially being kept, process back-geared tooth top and have identical intensity, can improve the intensity of gear with the tooth root position; Once more, the forging of profile of tooth can economical with materials, reduces the cost of product.
Claims (3)
1. piston of automobile steering device tooth portion Forging Technology is characterized in that: may further comprise the steps, (1) heating process is about to initial blank and is being heated to 1150 ℃～1300 ℃; (2) preforming is about to the initial blank jumping-up, obtains prefabricated blank, so that better remove the oxide skin of blank surface and make base shape meet piston of automobile steering device more; (3) blocking operation is about to prefabricated blank and puts into blocker, by the volume of blocking reasonable distribution blank, obtains the pre-forging of gear original shape; (4) finish-forging operation is about to pre-forging and puts into finisher, makes pre-forging continue distortion and obtains finish-forging spare, just has the piston of automobile steering device of gear; (5) side cut operation is promptly cut edge to finish-forging spare; (6) forging finishes to leave for mach cutting output on the backgear, and the cutting output that leaves on the gear is carried out machining, does the surface processing after the machining, obtains qualified forging.
2. piston of automobile steering device tooth according to claim 1 portion Forging Technology, it is characterized in that: the thickness of the mach cutting output of confession that leaves on the described gear is 1.5mm-4mm.
3. piston of automobile steering device tooth according to claim 1 portion Forging Technology, it is characterized in that: described blocker and finisher are formed by upper die and lower die, have the profile of tooth impression according to the design of piston of automobile steering device finished product gear profile on the described upper die and lower die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100356987A CN102166615A (en) | 2011-01-27 | 2011-01-27 | Forging process for piston toothed part of automobile steering box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100356987A CN102166615A (en) | 2011-01-27 | 2011-01-27 | Forging process for piston toothed part of automobile steering box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102166615A true CN102166615A (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100356987A Pending CN102166615A (en) | 2011-01-27 | 2011-01-27 | Forging process for piston toothed part of automobile steering box |
Country Status (1)
| Country | Link |
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| CN (1) | CN102166615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351897A (en) * | 2018-10-30 | 2019-02-19 | 青岛三星精锻齿轮有限公司 | Primary heating continuously forges precision form penetrating bridge triple gear technique |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002076653A1 (en) * | 2001-03-22 | 2002-10-03 | Bishop Innovation Limited | Method and apparatus for manufacture of a forged rack |
| CN1398690A (en) * | 2002-08-10 | 2003-02-26 | 燕山大学 | Precise forging technology for automobile steering knuckle |
| RU2005123918A (en) * | 2005-07-27 | 2007-02-20 | Открытое акционерное общество "Уральска кузница"(RU) | METHOD FOR MANUFACTURING AXES FOR ROLLING STAFF AND DEVICE FOR ITS IMPLEMENTATION |
| CN101091978A (en) * | 2007-07-18 | 2007-12-26 | 山东大学 | New technique for forging bracket of back axle of automobile |
| CN101347887A (en) * | 2008-08-22 | 2009-01-21 | 常州精棱铸锻有限公司 | Method for producing upper gear tooth of steering arm shaft of automotive power steering gear |
| CN101444884A (en) * | 2008-12-18 | 2009-06-03 | 浙江跃进机械有限公司 | Machining process of engine connecting rod |
| CN101716642A (en) * | 2009-11-10 | 2010-06-02 | 东风汽车有限公司 | Forming method of car steering knuckle forging die cavity |
-
2011
- 2011-01-27 CN CN2011100356987A patent/CN102166615A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002076653A1 (en) * | 2001-03-22 | 2002-10-03 | Bishop Innovation Limited | Method and apparatus for manufacture of a forged rack |
| CN1398690A (en) * | 2002-08-10 | 2003-02-26 | 燕山大学 | Precise forging technology for automobile steering knuckle |
| RU2005123918A (en) * | 2005-07-27 | 2007-02-20 | Открытое акционерное общество "Уральска кузница"(RU) | METHOD FOR MANUFACTURING AXES FOR ROLLING STAFF AND DEVICE FOR ITS IMPLEMENTATION |
| CN101091978A (en) * | 2007-07-18 | 2007-12-26 | 山东大学 | New technique for forging bracket of back axle of automobile |
| CN101347887A (en) * | 2008-08-22 | 2009-01-21 | 常州精棱铸锻有限公司 | Method for producing upper gear tooth of steering arm shaft of automotive power steering gear |
| CN101444884A (en) * | 2008-12-18 | 2009-06-03 | 浙江跃进机械有限公司 | Machining process of engine connecting rod |
| CN101716642A (en) * | 2009-11-10 | 2010-06-02 | 东风汽车有限公司 | Forming method of car steering knuckle forging die cavity |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351897A (en) * | 2018-10-30 | 2019-02-19 | 青岛三星精锻齿轮有限公司 | Primary heating continuously forges precision form penetrating bridge triple gear technique |
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Application publication date: 20110831 |