CN106736290A - The preparation method of automobile DCT automatic transmission clutch propeller boss - Google Patents
The preparation method of automobile DCT automatic transmission clutch propeller boss Download PDFInfo
- Publication number
- CN106736290A CN106736290A CN201611217370.6A CN201611217370A CN106736290A CN 106736290 A CN106736290 A CN 106736290A CN 201611217370 A CN201611217370 A CN 201611217370A CN 106736290 A CN106736290 A CN 106736290A
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- China
- Prior art keywords
- internal spline
- propeller boss
- apical pore
- preparation
- diameter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses the preparation method of automobile DCT automatic transmission clutch propeller boss, its operation is：Prepare raw material；Heating raw materials；Blank after heating is forged and pressed on forcing press, forms blank material；Blank material is made annealing treatment；The center line of internal spline is determined in pre- blank material, is the pre- apical pore of axis processing and fabricating with the center line, the diameter 1-2mm smaller than internal spline diameter of pre- apical pore, depth is corresponding with the depth of internal spline；The benchmark of propeller boss is cylindrical with internal spline cold extrusion simultaneously, while shaping.Preparation method of the invention, propeller boss internal spline and benchmark it is cylindrical and meanwhile cold extrusion simultaneously be molded, internal spline precision reach 6 grades, internal spline roughness reach Ra0.40, spline mechanical strength improve 30%, production efficiency improve 3 times；The pre- apical pore diameter 1-2mm smaller than internal spline diameter of the spline extruding being pre-machined, the pre- apical pore can increase substantially internal spline tooth form precision, and the strength of extruding can also be greatly reduced, and improve more than 2 times of life-span of cold-extruded punch-pin.
Description
Technical field
The present invention relates to the automatic transmission clutch propeller boss preparation method of hybrid power new-energy automobile, especially automobile
The preparation method of DCT automatic transmission clutch propeller boss.
Background technology
Automobile double-clutch automatic gearbox（Abbreviation DCT）, propeller boss therein is non-in automobile DCT automatic transmission clutch
Normal important part, plays connection and transmitting torque, including accurate internal spline and the bar portion of a connection function, and it makes
Quality be directly connected to automatic gearbox torque transmission stationarity and drive comfortableness.
Propeller boss has accurate endoporus spline, and domestic existing process can only be manufactured and added by the way of machining
Work.The production method of this kind machining, be primarily present that low process time in low module pinion cutter life-span is more long, precision less
Raw material metal high, consumption is more, part percent defective is high, increased the deficiencies such as manufacturing cost.
The content of the invention
The present invention for the preparation method of automobile DCT automatic transmission clutch propeller boss in the prior art exist it is above-mentioned not
Foot, there is provided a kind of to provide a kind of preparation method of automobile DCT automatic transmission clutch propeller boss, makes its internal spline tooth form precision
Height, product form and position tolerance high precision, production efficiency is high, part percent defective is low, propeller boss internal spline and profile cold-extrusion technology.
Technical scheme：The preparation method of automobile DCT automatic transmission clutch propeller boss, its feature exists
In comprising the following steps：
1）According to technological requirement, prepare raw material；
2）Using firing equipment, the temperature of heating raw materials to technological requirement；
3）Blank after heating is forged and pressed on forcing press, forms blank material；
4）Blank material is made annealing treatment, is specifically annealed according to technological requirement；Blank material is carried out according to technological requirement
Machining makes prefabricated blank；
5）The center line of internal spline is determined in pre- blank material, is the pre- apical pore of axis processing and fabricating with the center line, pre- apical pore
Diameter 1-2mm smaller than internal spline diameter, depth is corresponding with the depth of internal spline；
6）The benchmark of propeller boss is cylindrical with internal spline cold extrusion simultaneously, while shaping.
Further feature is：Making prefabricated blank first is machined out according to technological requirement to blank material, in prefabricated blank really
Determine the center line of internal spline, be the pre- apical pore of axis processing and fabricating with the center line.
The diameter of pre- apical pore 1.2mm smaller than internal spline diameter.
The preparation method of automobile DCT automatic transmission clutch propeller boss of the present invention, relative to prior art, with following spy
Levy：
1st, propeller boss internal spline and benchmark is cylindrical while cold extrusion is molded simultaneously, internal spline precision reaches 6 grades.
2nd, internal spline roughness reaches Ra0.40.
3rd, spline mechanical strength improves 30%.
4th, production efficiency improves 3 times.
5th, the benchmark of propeller boss is cylindrical squeezes out simultaneously with internal spline, it is ensured that spline reference circle and the cylindrical axiality of benchmark
Within reaching drawing requirement Φ 0.07, it is to avoid follow-up machine is subject to the problem of locating and machining deviation on the basis of internal spline.
The pre- apical pore diameter 1-2mm smaller than internal spline diameter of the spline extruding the 6th, being pre-machined, the pre- apical pore can be significantly
Raising internal spline tooth form precision, and the strength of extruding can also be greatly reduced, more than 2 times of the life-span of raising cold-extruded punch-pin.
Brief description of the drawings
The structural front view of Fig. 1 propeller boss of the present invention；
Fig. 2 is the sectional view of Fig. 1；
Fig. 3 is whole process chart of the invention.
Specific embodiment
The preparation method of automobile DCT automatic transmission clutch propeller boss of the present invention, its feature is comprised the following steps：
1）According to technological requirement, prepare raw material；After the inspection of raw and process materials is qualified, blanking controls the weight of blanking；
If oxide skin, then materials statement surface oxidized skin is removed；It is specific that surface scale is removed using centerless grinder；
2）Using firing equipment, such as temperature of heating raw materials to technological requirement, 900 DEG C of -1080 DEG C of scopes；It is specific to use
300KW intermediate frequency furnace apparatus；Specific selectable temperature is 900 DEG C, 920 DEG C, 950 DEG C, 960 DEG C, 970 DEG C, 980 DEG C, 990 DEG C,
1000 DEG C, 1010 DEG C, 1020 DEG C, 1030 DEG C, 1040 DEG C, 1050 DEG C, 1060 DEG C, 1070 DEG C, 1080 DEG C etc., this hair can be met
The need for bright；
3）Blank after heating is forged and pressed on forcing press, forms blank material；It is specific to select on 630T electric screw press
Forging forming, blank material is in the in-mold molding made according to technological requirement；
4）Blank material is heat-treated, is specifically carried out according to technological requirement, such as made annealing treatment, reach requirement hardness,
Metallographic structure etc.；
5）The center line of internal spline is determined in blank material after heat treatment, is the pre- apical pore of axis vehicle processing and fabricating with the center line,
The diameter of pre- apical pore 1-2mm smaller than internal spline diameter, depth is corresponding with the depth of internal spline；During concrete technology, pre- apical pore it is straight
Footpath 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm smaller than internal spline diameter,
Needs of the invention can be met；
With first chance processing and fabricating prefabricated blank, the pre- apical pore of spline extruding can be processed after heat treatment in blank material in prefabricated blank,
The pre- apical pore aperture is obvious for the influence of internal spline tooth form precision, the strength of extruding can be greatly reduced, and improve cold-extruded
The life-span of punch-pin；
6）The benchmark of propeller boss is cylindrical with internal spline cold extrusion simultaneously, while shaping.Internal spline is in the one-shot forming of pre- apical pore region.
Processing method of the present invention, its critical process includes as follows：
1st, cold extrusion equipment uses YJS61-500-500T high speed oil pressure machines.
2nd, using four guide pillars precision cold extruding die frame, mould bases guiding accuracy is controlled within 0.015mm extrusion die.
3rd, spline punch-pin Precision EDM processing, tooth form roughness≤Ra0.4. imports angle R1.Benchmark D1 is placed in cavity plate,
Guiding by mould orifice mode is used with spline punch-pin, clearance control is within 0.025-0.035.
4th, extruding spline punch-pin lubrication uses curing group lubricant, it is desirable to extrude every lubrication once.
5th, squeeze force control is in 15-18mp, it is ensured that equipment sliding block smooth movement during extruding.
6th, extrusion process completes the size of the internal spline centre bore d and cylindrical D of benchmark simultaneously, is examined totally using spline go-no go gauge
Survey the M value scopes of internal spline.
7th, internal spline tooth form roughness reaches Ra1.60 after the completion of extruding, the profile accuracy Fr of spline≤0.02mm, teeth directional
Precision≤0.012mm.
The preparation method flow chart of automobile DCT automatic transmission clutch propeller boss as shown in Figure 3, master operation is in car base
And cold extrusion, i.e., the center line of internal spline is determined in blank material after heat treatment, it is pre- as axis vehicle processing and fabricating with the center line
Apical pore Φ d, the pre- apical pore is obtained using machining；Again with the pre- apical pore or Φ D peripheries as positioning datum, while cold extrusion,
The benchmark of propeller boss is cylindrical with internal spline cold extrusion simultaneously, while shaping.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than restriction technologies side
Case, although applicant has been described in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should manage
Solution, those modify or equivalent to technical scheme, without deviating from the objective and scope of the technical program,
All should cover in the middle of scope of the presently claimed invention.
Claims (3)
1. the preparation method of automobile DCT automatic transmission clutch propeller boss, it is characterised in that comprise the following steps：
1）According to technological requirement, prepare raw material and blanking；
2）Using firing equipment, the temperature of heating raw materials to technological requirement；
3）Blank after heating is forged and pressed on forcing press, forms blank material；
4）Blank material is heat-treated, is specifically carried out according to technological requirement；
5）The center line of internal spline is determined in blank material, is the pre- apical pore of axis processing and fabricating with the center line, pre- apical pore it is straight
Footpath 1-2mm smaller than internal spline diameter, depth is corresponding with the depth of internal spline；
6）The benchmark of propeller boss is cylindrical with internal spline cold extrusion simultaneously, while shaping.
2. the preparation method of automobile DCT automatic transmission clutch propeller boss according to claim 1, it is characterised in that：In step
Rapid 5）In, making prefabricated blank first is machined out to blank material after heat treatment, the center line of internal spline is determined in prefabricated blank, with
The center line is that axis processes pre- apical pore.
3. the preparation method of automobile DCT automatic transmission clutch propeller boss according to claim 1 or claim 2, it is characterised in that：
The diameter of pre- apical pore 1.2mm smaller than internal spline diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611217370.6A CN106736290A (en) | 2016-12-26 | 2016-12-26 | The preparation method of automobile DCT automatic transmission clutch propeller boss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611217370.6A CN106736290A (en) | 2016-12-26 | 2016-12-26 | The preparation method of automobile DCT automatic transmission clutch propeller boss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106736290A true CN106736290A (en) | 2017-05-31 |
Family
ID=58924957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611217370.6A Pending CN106736290A (en) | 2016-12-26 | 2016-12-26 | The preparation method of automobile DCT automatic transmission clutch propeller boss |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001316740A (en) * | 2000-05-10 | 2001-11-16 | Honda Motor Co Ltd | Manufacturing method and structure of pulley |
| CN101856780A (en) * | 2009-04-08 | 2010-10-13 | 余新华 | Bailey truss pin forge piece manufacturing process and die manufacture |
| CN102248367A (en) * | 2011-05-29 | 2011-11-23 | 杜广智 | Production method and production device for connecting rod |
| CN103753142A (en) * | 2014-01-10 | 2014-04-30 | 重庆创精温锻成型有限公司 | Production method for input axle hubs of automotive clutches |
| CN103817495A (en) * | 2014-03-05 | 2014-05-28 | 浙江巨科实业有限公司 | Manufacturing method of aluminum alloy hub |
| CN104439955A (en) * | 2014-11-17 | 2015-03-25 | 江苏太平洋精锻科技股份有限公司 | Two-sided combination gear molding method |
| CN105179450A (en) * | 2015-09-30 | 2015-12-23 | 江苏威鹰机械有限公司 | Production method of car transmission input axle hubs |
-
2016
- 2016-12-26 CN CN201611217370.6A patent/CN106736290A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001316740A (en) * | 2000-05-10 | 2001-11-16 | Honda Motor Co Ltd | Manufacturing method and structure of pulley |
| CN101856780A (en) * | 2009-04-08 | 2010-10-13 | 余新华 | Bailey truss pin forge piece manufacturing process and die manufacture |
| CN102248367A (en) * | 2011-05-29 | 2011-11-23 | 杜广智 | Production method and production device for connecting rod |
| CN103753142A (en) * | 2014-01-10 | 2014-04-30 | 重庆创精温锻成型有限公司 | Production method for input axle hubs of automotive clutches |
| CN103817495A (en) * | 2014-03-05 | 2014-05-28 | 浙江巨科实业有限公司 | Manufacturing method of aluminum alloy hub |
| CN104439955A (en) * | 2014-11-17 | 2015-03-25 | 江苏太平洋精锻科技股份有限公司 | Two-sided combination gear molding method |
| CN105179450A (en) * | 2015-09-30 | 2015-12-23 | 江苏威鹰机械有限公司 | Production method of car transmission input axle hubs |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170531 |