CN107654477A - A kind of automobile gearbox two axles of output and its roughing technique - Google Patents
A kind of automobile gearbox two axles of output and its roughing technique Download PDFInfo
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- CN107654477A CN107654477A CN201710800683.2A CN201710800683A CN107654477A CN 107654477 A CN107654477 A CN 107654477A CN 201710800683 A CN201710800683 A CN 201710800683A CN 107654477 A CN107654477 A CN 107654477A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000003801 milling Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 102220028374 rs386352313 Human genes 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000007542 hardness measurement Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000686 essence Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
-
- 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
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a kind of automobile gearbox two axles of output and its roughing technique, it is described to export two axles to export two axles after roughing, two axles of the output are integral type, and there are the first centre bore and the second centre bore in both ends, including the first shaft part being sequentially connected is to the 9th shaft part.The processing step is as follows：The inspection of raw and process materials；Blanking；Heating；Rolling；Remove material head；Decompose；Alignment；Isothermal normalizing；End face milling drill centers；Rough turn short end；Rough turn long end；Examine storage；Once detected a flaw before alignment, beneficial effects of the present invention：The technique meets element precision height, and heat-treated sturcture meets workpiece requirement, the use of isothermal normalizing technique, realizes effective control of part quality, so as to improve machinability and heat treatment deformation stability.The more common normalizing of isothermal normalizing can obtain the microscopic structure and hardness of uniformity needs.
Description
Technical field
The present invention relates to a kind of automobile gearbox part and its processing technology, more particularly to a kind of automobile gearbox
With two axle roughing techniques of output.
Background technology
Speed changer is one of main composition of car transmissions.The actual use situation of automobile is extremely complex, such as starting,
Idling parking, low speed or run at high speed, accelerate, slow down, climb and move backward, this requires that the driving force of automobile and speed can be
Change in sizable scope, and the output torque and rotation speed change scope of piston-mode motor widely used at present are smaller.
In order to adapt to the driving conditions often changed, while engine under favourable operating mode (power is higher, oil consumption is relatively low) is set to work,
Speed changer is provided with transmission system.Input shaft is the axle that power enters speed changer, and power enters from engine through input shaft
Speed changer, then impart power to output gear with the input gear on moving axis by input shaft and drive one axle of output to rotate, and
Differential mechanism motion is driven, automobile can be to advance or retreat.
Power is entered after gear box from input shaft, it will starts the travelling between gear.Tooth in casing
Wheel camp on the contrary divides very well, two input shafts, two output shafts, then will again plus the mechanism of a set of parking lock and to wheel
Semiaxis conveys the differential mechanism of power.Two input shafts are connected with K1 clutches and K2 clutches respectively, using the side of inside and outside fit
Formula, input an axle on be 1357 gears gear, input two axles on be then 246R gear.When two clutch alternations
When, power can just keep off between even number gear in odd number and continue.And 1-4 shelves are connected to one axle of output, 5-7 gears are connected to output
Two axles, reverse gear and parking lock device are connected to three axles of output.
Output shaft of gear-box is in the axial workpiece to work at a high speed, under fully loaded transportation condition, is had in motion process repeatedly
Fatigue resistance, wearability and enough intensity, rigidity and mechanical property etc., thus selection on material, blank manufacture,
The requirement such as machining and heat treatment, tolerance is very high, in conventional production, can not be properly arrived at requirement.
The content of the invention
The technical problems to be solved by the invention, which are the provision of one kind, can produce precision height, and heat-treated sturcture meets
The automobile gearbox of requirement two axles of output and its roughing technique.
The present invention is that solve above-mentioned technical problem by the following technical programs：Two axles of output of the present invention are roughing
After export two axles, two axles of the output are integral type, and there are the first centre bore and the second centre bore in both ends, including the be sequentially connected
One shaft part, the second shaft part, the 3rd shaft part, the 4th shaft part, the 5th shaft part, the 6th shaft part, the 7th shaft part, the 8th shaft part, the 9th axle
Section.
Preferably, the 8th shaft section diameter is maximum, first shaft part, the second shaft part, the 3rd shaft part, the 4th shaft part,
5th shaft part, the 6th shaft part, the 9th shaft part and the 7th shaft part, diameter increase successively.
Preferably, the face on the basis of the 8th shaft part head end face, the first shaft part head end to reference plane distance is L1=
180.65mm diameter D1=28.35mm；Second shaft part head end to reference plane distance be L2=133.5mm, diameter D2=
32.76mm；3rd shaft part head end to reference plane distance be L3=114.8mm, diameter D3=35.35mm；4th shaft part head end arrives
Reference plane distance is L4=91.3mm, diameter D4=36.76mm；5th shaft part head end to reference plane distance be L5=70.3mm,
Diameter D5=38.35mm；6th shaft part head end to reference plane distance be L6=45.8mm, diameter D6=39.76mm；7th shaft part
Length is L7=28.2mm, diameter D7=44.35mm；8th shaft part length is L8=35.6mm, diameter D6=79.1mm；9th
Shaft part end to reference plane distance be L9=58.85mm, diameter D8=40.9mm.
Preferably, the 9th shaft part end is+0.08mm~-0.08mm apart from tolerance to reference plane, remaining distance or
Length tolerance is+0.1mm~-0.1mm, and all shaft section diameter tolerances of two axles of the output are that tolerance is 0~-0.15mm
Preferably, for first shaft part to the 7th shaft part, it is trapezoidal transition to have section per two neighboring shaft part junction
Shaft part；The first shaft part head end has chamfering, and there is chamfering the 9th section of shaft part end.
Preferably, first centre bore, the second centre bore are circular hole and cylindrical hole is tangent forms, and using S ￠
When 22mm ball and tangent R36mm circular holes, circularity 0.03mm at this, ball end points is away from the first shaft part end face distance L9=
14.7mm, tolerance are+0.05mm~-0.05mm；When tangent using S ￠ 30mm ball and R51mm circular holes, circularity at this
0.03mm, for ball end points away from the 9th shaft part end face distance L10=21.38mm, tolerance is+0.03mm~-0.03mm.
Preferably, first hole depth is 25mm, body diameter 10mm；Second depth of center hole is 30mm, cylinder
A diameter of 12.5mm.
The present invention also provides the roughing technique that a kind of automobile gearbox exports two axles, and the processing step is as follows：
Step 1：The inspection of raw and process materials, carry out composition detection using stokehold spectroanalysis instrument, acid etching estimates macrostructure, Rockwell
Hardometer test H, microscope observation banded structure, supersonic detector observation interior tissue；
Step 2：Blanking, raw material are decomposed using band sawing machine, ensure end face Chui Zhi Du≤1mm；
Step 3：Heating, using 500KW intermediate frequency heatings, heating-up temperature is 1080-1180 DEG C, heating beat 32 ± 2 seconds；
Step 4：Rolling, roll forming is carried out using cross wedge rolling machine；
Step 5：Material head is removed, material head is carried out using band sawing machine；
Step 6：Decompose, katolysis is carried out using band sawing machine；
Step 7：Alignment, is straightened using hydraulic straightening machine to workpiece, circle bounce≤0.8mm；
Step 8：Isothermal normalizing, handled using push-down isothermal normalizing furnace, realize hardness：HB150-180, hardness are equal
Even property：Same batch≤20HB, single-piece≤10HB, same to section≤5HB；Metallographic structure：P+F≤3 grade, banded structure≤3 grade；Grain size
5-8 levels；
Step 9：End face milling drill centers, milling bore Digit Control Machine Tool and carry out end face milling and drill centers, large end face center hole depth
It is 25mm to spend for 30mm, other end depth of center hole；Roughness is Ra2.5, bounce of each cylindrical and end face to centre bore≤
0.10；
Step 10：Rough turn short end, precise NC lathe carry out rough turn short end；
Step 11：Rough turn long end, precise NC lathe carry out rough turn long end；
Step 12：Examine storage.
Preferably, it is described that flaw detection processing is carried out using supersonic detector to workpiece between step 7 and step 8.
Preferably, the lathe rotating speed of the step 10 and step 11：950r/min, the amount of feeding：150mm/min.
Check position takes second, the four, the 6th shaft parts.
The present invention has advantages below compared with prior art：The technique meets element precision height, and heat-treated sturcture meets work
Part requirement, the use of isothermal normalizing technique, realizes effective control of part quality, so as to improve machinability and Re Chu
Manage deformation stability.The more common normalizing of isothermal normalizing can obtain the microscopic structure and hardness of uniformity needs.
Brief description of the drawings
Fig. 1 is that a kind of automobile gearbox of the present invention exports two axle construction schematic diagrames；
Fig. 2 is that a kind of automobile gearbox of the present invention exports two axle construction schematic diagrames；
Fig. 3 is the dimensional drawing that a kind of automobile gearbox of the present invention exports two axles；
Fig. 4 is the process schematic representation for the roughing technique that a kind of automobile gearbox of the present invention exports two axles.
The shaft part 160 of the 5th shaft part 150 of first shaft part, 110 second shaft part 120 the 4th shaft part 140 of the 3rd shaft part 130 the 6th
The centre bore 220 of seven 190 first centre bore of the 9th shaft part of the 8th shaft part 180 of shaft part 170 210 second
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
As shown in figure 1, exporting two axles described in the present embodiment to export two axles after roughing, two axles of the output are integrated
There are the first centre bore 210 and the second centre bore 220 in formula, both ends, including be sequentially connected the first shaft part 110, the second shaft part 120,
3rd shaft part 130, the 4th shaft part 140, the 5th shaft part 150, the 6th shaft part 160, the 7th shaft part 170, the 8th shaft part the 180, the 9th
Shaft part 190.
As shown in Fig. 2 the diameter of the 8th shaft part 180 is maximum, first shaft part 110, the second shaft part 120, the 3rd axle
The 130, the 4th shaft part 140 of section, the 5th shaft part 150, the 6th shaft part 160, the 9th shaft part 190 and the 7th shaft part 170, diameter increase successively
Greatly.
As shown in figure 3, the face on the basis of the head end face of the 8th shaft part 180, the head end of the first shaft part 110 to reference plane distance is L1
=180.65mm, diameter D1=28.35mm；The head end of second shaft part 120 to reference plane distance be L2=133.5mm, diameter D2=
32.76mm；The head end of 3rd shaft part 130 to reference plane distance be L3=114.8mm, diameter D3=35.35mm；4th shaft part 140
Head end to reference plane distance be L4=91.3mm, diameter D4=36.76mm；The head end of 5th shaft part 150 to reference plane distance be L5
=70.3mm, diameter D5=38.35mm；The head end of 6th shaft part 160 to reference plane distance be L6=45.8mm, diameter D6=
39.76mm；The length of 7th shaft part 170 is L7=28.2mm, diameter D7=44.35mm；The length of 8th shaft part 180 is L8=
35.6mm, diameter D6=79.1mm；The end of 9th shaft part 190 to reference plane distance be L9=58.85mm, diameter D8=
40.9mm。
The end of 9th shaft part 190 is+0.08mm~-0.08mm apart from tolerance to reference plane, remaining distance or length
Tolerance is+0.1mm~-0.1mm, and all shaft section diameter tolerances of two axles of the output are that tolerance is 0~-0.15mm
The shaft part 170 of first shaft part 110 to the 7th, it is trapezoidal transition axis to have section per two neighboring shaft part junction
Section；The head end of first shaft part 110 has chamfering, and there is chamfering the 9th section of shaft part end.
First centre bore 210, the second centre bore 220 are circular hole and cylindrical hole is tangent forms, and using S ￠
When 22mm ball and tangent R36mm circular holes, circularity 0.03mm at this, ball end points is away from the first shaft part end face distance L9=
14.7mm, tolerance are+0.05mm~-0.05mm；When tangent using S ￠ 30mm ball and R51mm circular holes, circularity at this
0.03mm, for ball end points away from the 9th shaft part end face distance L10=21.38mm, tolerance is+0.03mm~-0.03mm.
The depth of first centre bore 210 is 25mm, body diameter 10mm；The depth of second centre bore 220 is 30mm, circle
Column diameter is 12.5mm.
As shown in figure 4, the present invention also provides the roughing technique that a kind of automobile gearbox exports two axles, the processing step
It is as follows：
Step 1：The inspection of raw and process materials, carry out composition detection using stokehold spectroanalysis instrument, acid etching estimates macrostructure, Rockwell
Hardometer test H, microscope observation banded structure, supersonic detector observation interior tissue；
Step 2：Blanking, raw material are decomposed using band sawing machine, ensure end face Chui Zhi Du≤1mm；
Step 3：Heating, using 500KW intermediate frequency heatings, heating-up temperature is 1080-1180 DEG C, heating beat 32 ± 2 seconds；
Step 4：Rolling, roll forming is carried out using cross wedge rolling machine；
Step 5：Material head is removed, material head is carried out using band sawing machine；
Step 6：Decompose, katolysis is carried out using band sawing machine；
Step 7：Alignment, is straightened using hydraulic straightening machine to workpiece, circle bounce≤0.8mm；
Step 8：Isothermal normalizing, handled using push-down isothermal normalizing furnace, realize hardness：HB150-180, hardness are equal
Even property：Same batch≤20HB, single-piece≤10HB, same to section≤5HB；Metallographic structure：P+F≤3 grade, banded structure≤3 grade；Grain size
5-8 levels；
Step 9：End face milling drill centers, milling bore Digit Control Machine Tool and carry out end face milling and drill centers, large end face center hole depth
It is 25mm to spend for 30mm, other end depth of center hole；Roughness is Ra2.5, bounce of each cylindrical and end face to centre bore≤
0.10；
Step 10：Rough turn short end, precise NC lathe carry out rough turn short end；
Step 11：Rough turn long end, precise NC lathe carry out rough turn long end；
Step 12：Examine storage.
It is described that flaw detection processing is carried out using supersonic detector to workpiece between step 7 and step 8.
The lathe rotating speed of the step 10 and step 11：950r/min, the amount of feeding：150mm/min.
The course of work of the present invention is as follows, and one axle of output includes 1,2,3,4 grade of synchronizer and power shift gear.Two axles are exported to include
5th, 6,7 grades and gearshift power shift gear and the output gear that is connected with clutch of speed changer output speed sensor gear.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of automobile gearbox two axles of output, it is characterised in that two axles of the output are described to export two axles after roughing
It is integral type to export two axles, and there are the first centre bore and the second centre bore in both ends, including the first shaft part, the second axle being sequentially connected
Section, the 3rd shaft part, the 4th shaft part, the 5th shaft part, the 6th shaft part, the 7th shaft part, the 8th shaft part, the 9th shaft part.
A kind of 2. automobile gearbox according to claim 1 two axles of output, it is characterised in that the 8th shaft section diameter
Maximum, first shaft part, the second shaft part, the 3rd shaft part, the 4th shaft part, the 5th shaft part, the 6th shaft part, the 9th shaft part and the 7th
Shaft part, diameter increase successively.
3. a kind of automobile gearbox according to claim 2 two axles of output, it is characterised in that with the 8th shaft part head end face
On the basis of face, the first shaft part head end to reference plane distance be L1=180.65mm, diameter D1=28.35mm；Second shaft part head end
It is L2=133.5mm, diameter D2=32.76mm to reference plane distance；3rd shaft part head end to reference plane distance be L3=
114.8mm diameter D3=35.35mm；4th shaft part head end to reference plane distance be L4=91.3mm, diameter D4=36.76mm；
5th shaft part head end to reference plane distance be L5=70.3mm, diameter D5=38.35mm；6th shaft part head end is to reference plane distance
For L6=45.8mm, diameter D6=39.76mm；7th shaft part length is L7=28.2mm, diameter D7=44.35mm；8th axle
Segment length is L8=35.6mm, diameter D6=79.1mm；9th shaft part end to reference plane distance be L9=58.85mm, diameter
D8=40.9mm.
A kind of 4. automobile gearbox according to claim 3 two axles of output, it is characterised in that the 9th shaft part end
Apart from tolerance it is+0.08mm~-0.08mm to reference plane, remaining distance or length tolerance are+0.1mm~-0.1mm, described defeated
All shaft section diameter tolerances for going out two axles are that tolerance is 0~-0.15mm
A kind of 5. automobile gearbox according to claim 1 two axles of output, it is characterised in that first shaft part to the
Seven shaft parts, it is trapezoidal transition shaft part to have section per two neighboring shaft part junction；The first shaft part head end has a chamfering, and the 9th
There is chamfering section shaft part end.
A kind of 6. automobile gearbox according to claim 1 two axles of output, it is characterised in that first centre bore,
Second centre bore is circular hole and cylindrical hole is tangent forms, and using S ￠ 22mm ball and tangent R36mm circular holes when, should
Locate circularity 0.03mm, for ball end points away from the first shaft part end face distance L9=14.7mm, tolerance is+0.05mm~-0.05mm；Using S
When ￠ 30mm ball and tangent R51mm circular holes, circularity 0.03mm at this, ball end points is away from the 9th shaft part end face distance L10=
21.38mm, tolerance are+0.03mm~-0.03mm.
A kind of 7. automobile gearbox according to claim 6 two axles of output, it is characterised in that first center hole depth
Spend for 25mm, body diameter 10mm；Second depth of center hole is 30mm, body diameter 12.5mm.
8. a kind of roughing technique that two axles are exported as described in claim 1-7, it is characterised in that the processing step is as follows：
Step 1：The inspection of raw and process materials, carry out composition detection using stokehold spectroanalysis instrument, acid etching estimates macrostructure, Rockwell hardness
Measurement examination H, microscope observation banded structure, supersonic detector observation interior tissue；
Step 2：Blanking, raw material are decomposed using band sawing machine, ensure end face Chui Zhi Du≤1mm；
Step 3：Heating, using 500KW intermediate frequency heatings, heating-up temperature is 1080-1180 DEG C, heating beat 32 ± 2 seconds；
Step 4：Rolling, roll forming is carried out using cross wedge rolling machine；
Step 5：Material head is removed, material head is carried out using band sawing machine；
Step 6：Decompose, katolysis is carried out using band sawing machine；
Step 7：Alignment, is straightened using hydraulic straightening machine to workpiece, circle bounce≤0.8mm；
Step 8：Isothermal normalizing, handled using push-down isothermal normalizing furnace, realize hardness：HB150-180, hardness are uniform
Property：Same batch≤20HB, single-piece≤10HB, same to section≤5HB；Metallographic structure：P+F≤3 grade, banded structure≤3 grade；Grain size 5-
8 grades；
Step 9：End face milling drill centers, Digit Control Machine Tool progress end face milling is bored in milling and drill centers, large end face depth of center hole are
30mm, other end depth of center hole are 25mm；Roughness is Ra2.5, bounce≤0.10 of each cylindrical and end face to centre bore；
Step 10：Rough turn short end, precise NC lathe carry out rough turn short end；
Step 11：Rough turn long end, precise NC lathe carry out rough turn long end；
Step 12：Examine storage.
9. the roughing technique of a kind of automobile gearbox two axles of output according to claim 8, it is characterised in that described
Flaw detection processing is carried out using supersonic detector to workpiece between step 7 and step 8.
A kind of 10. roughing technique of automobile gearbox two axles of output according to claim 8, it is characterised in that institute
State the lathe rotating speed of step 10 and step 11：950r/min, the amount of feeding：150mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710800683.2A CN107654477A (en) | 2017-09-07 | 2017-09-07 | A kind of automobile gearbox two axles of output and its roughing technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710800683.2A CN107654477A (en) | 2017-09-07 | 2017-09-07 | A kind of automobile gearbox two axles of output and its roughing technique |
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| CN107654477A true CN107654477A (en) | 2018-02-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185327A (en) * | 2018-09-14 | 2019-01-11 | 汉中天行智能飞行器有限责任公司 | A kind of hyperbola multidiameter shaft |
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| GB1208019A (en) * | 1966-11-03 | 1970-10-07 | Gulf Research Development Co | Bits and nozzles for use in hydraulic drilling |
| JP2006070929A (en) * | 2004-08-31 | 2006-03-16 | Nissan Motor Co Ltd | Selective engagement type gear mechanism of transmission for vehicle |
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