CN105855451B - Straight oil groove forging and molding processing technology on a kind of differential pinion gear sphere - Google Patents
Straight oil groove forging and molding processing technology on a kind of differential pinion gear sphere Download PDFInfo
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- CN105855451B CN105855451B CN201610160388.0A CN201610160388A CN105855451B CN 105855451 B CN105855451 B CN 105855451B CN 201610160388 A CN201610160388 A CN 201610160388A CN 105855451 B CN105855451 B CN 105855451B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
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- Mechanical Engineering (AREA)
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Abstract
The present invention relates to gear forging technical field, more particularly to straight oil groove forging and molding processing technology on a kind of differential pinion gear sphere, it includes, three-dimensional modeling, the processing and processing of mould, the roughing of forging, the processing steps such as the finishing of forging, present invention process process step design science, solve the problems, such as on spherical surface of planetary gear increased oil groove existing low production efficiency and crudy can not meet drawing requirement in process, present invention process not only ensure that the overall forging precision of differential pinion gear, reduce energy resource consumption, also increase planetary service life simultaneously, reduce the finishing time, improve production efficiency, and then production material is saved, reduce enterprise's production cost input.
Description
Technical field
The present invention relates to gear forging technical field, and in particular to straight oil groove forging on a kind of differential pinion gear sphere
Forming technique.
Background technology
Differential spider, semiaxis straight bevel gear are the vital parts in vehicle drive system, no matter the twin-stage bridge of vehicle
Or single-stage bridge, there are a set of or number set differential spider, semiaxis straight bevel gear inside it in subtractive assembly, in transmission system
In play vital effect.In order to ensure differential mechanism straight bevel gear is during engagement rotation, in good work
Make state, the lubrication between the mounting surface of its gear and poor shell just seems particularly important, and different vehicle bridge producers takes difference
Method, or be the radial oil groove for increasing a ring eccentric oil groove or three approximate deciles on spherical surface of planetary gear, or
Be change subtractive assembly in spherical pad concave spherical surface structure (such as：The very shallow oil-stored hole of increase), but by spherical pad thickness
Limitation, most of vehicle bridge producer tends to increase oil groove on spherical surface of planetary gear, and its ring eccentric oil groove difficulty of processing is not
Greatly, processing efficiency is not also low, but three radial oil grooves of approximate decile process difficulty just very greatly, and efficiency is not also high.
Usual three radial oil grooves are to be shaped using special tooling on horizontal milling machine using shaping disc milling tool, and per milling
After having cut an oil groove, gear will be removed, after changing certain angle, installation again compresses, another oil groove of milling, so
The radial oil groove of three approximate deciles on one spherical surface of planetary gear, milling are completed to need to load and unload, fixed three times, efficiency
It is extremely low, and because its frock is fixed, during the straight oil groove of milling, frock does not rotate around the planetary gear sphere centre of sphere,
So milling out the radial oil groove come, general middle width, two are narrow, do not meet drawing requirement, it is more difficult to come by drawing
Meet the knuckle R that 120 degree of inclined-planes of straight oil groove of user's needs have a common boundary with sphere.
The content of the invention
In order to solve on spherical surface of planetary gear increased straight oil groove in process existing low production efficiency and
Crudy can not meet the problem of requirement, and the present invention provides straight oil groove forging and molding on a kind of differential pinion gear sphere and added
Work technique, its technical scheme are as follows：Straight oil groove forging and molding processing technology on a kind of differential pinion gear sphere, including it is following
Step：
Step 1, three-dimensional modeling, first with three-dimensional software, three-dimensional modeling is carried out to part drawing, generates the part three of cold conditions
Entity is tieed up, then in conjunction with forging condition and machining situation, on sphere reserving fixed machine adds surplus, with reference to being forged material
Linear expansion coefficient and forging temperature, calculate needed for shrinkage factor under forging temperature, cold conditions forging is expanded, generation heat
State entity forging, then by hot entity forging reincarnation into hot spherical finish forge cavity plate solid modelling.
The processing and processing of step 2, mould, hot spherical finish forge cavity plate solid modelling is programmed on numerical control mill and added
Work, first rough milling die cavity before heat, finish-milling processing cavity again after heat treatment, then by special finish forge cavity plate, finish forge tooth die, top
Bar installation, it is anchored on forging equipment, the strict teeth groove and special finish forge cavity plate three pressed to mould program ver-ify finish forge tooth die
The center line of convex tendon (forging straight oil groove use) is corresponding, it is to be verified meet the requirements after, i.e., the pre-heat treatment is carried out to mould.
The rough forging of step 3, forging, first by the qualified bar section of sawing, it is placed in Medium Frequency Induction Heating Furnace, according to rod
Gauge lattice, loading frequency is adjusted, that is, forge frequency, the material block that then will warm up required forging temperature is placed in rough forge production line
Lower toothed mould in, start the equipment of adjusted good hitting power, material block disposably hit, then in equipment top shoe
During rise, start Lifting Device so that the hot forging of planetary gear, lower mode cavity is ejected by push rod in time.
The precision forging of step 4, forging, take the forging in upper step after rough forge away using manually or mechanically hand, put
In the lower toothed mould of finish forge production line, start the equipment of adjusted good hitting power, two-hit is carried out to rough forge part, then
During equipment top shoe gos up, start Lifting Device so that planetary gear fine forge piece, lower mould is ejected by push rod in time
Chamber.
Step 5, using manually or mechanically hand take the forging in upper step after finish forge away, be put in assigned position, complete
The disposable precision forging of the straight oil groove forging of spherical surface of planetary gear.
The temperature setting for carrying out the pre-heat treatment in further described step 2 to mould is 200-260 degree.
The beneficial effects of the invention are as follows：Present invention process process step design science, solves institute on spherical surface of planetary gear
Increased oil groove the problem of existing low production efficiency and crudy can not meet drawing requirement in process, this hair
Bright technique not only ensure that the overall forging precision of differential pinion gear, reduce energy resource consumption, while also increase planet
The service life of gear, reduce the finishing time, improve production efficiency, and then having saved production material, reducing enterprise
Industry production cost is put into.
Brief description of the drawings
Fig. 1 is the mould setting structure schematic diagram of present invention process；
Fig. 2 is special finish forge cavity die structure schematic diagram in present invention process；
Fig. 3 is the finish forge tooth die structural representation in present invention process；
Fig. 4 is the structural representation of the forging after finish forge in present invention process embodiment；
Fig. 5 is Fig. 4 A-A sectional views；
In figure marked as：The special finish forge cavity plates of 1-, 2- Upper Die-sleeves, 3- gears forging, 4- lower push rods, 5- finish forge tooth forms
The special finish forge concave die cavity of mould, 6- lower die-sleeves, 7- convex tendons, 8-, 9- tooth dies teeth groove, 10- tooth die die cavities.
Embodiment
Specific embodiment 1：In order to solve on spherical surface of planetary gear increased straight oil groove it is existing in process
Low production efficiency and the problem of crudy can not meet requirement, the present invention provides straight oil on a kind of differential pinion gear sphere
Groove forging and molding processing technology, its technical scheme are as follows：Straight oil groove forging and molding processing on a kind of differential pinion gear sphere
Technique, comprise the following steps：
Step 1, three-dimensional modeling, first with SolidWorks three-dimensional softwares, three-dimensional modeling is carried out to part drawing, generation is cold
The part 3D solid of state, add surplus then in conjunction with forging condition and machining situation, the machine that 1-1.5mm is reserved on sphere,
With reference to the linear expansion coefficient (linear expansion coefficient is generally) and forging temperature for being forged material, (forging temperature typically takes 950-1000
Degree), calculate needed for shrinkage factor under forging temperature (shrinkage factor of the temperature range in 950-1000 degree is 1.0133-
1.014), cold conditions forging is expanded, generates hot entity forging, then by hot entity forging reincarnation into hot spherical essence
Forge cavity plate solid modelling.
The processing and processing of step 2, mould, hot spherical finish forge cavity plate solid modelling is programmed on numerical control mill and added
Work, first rough milling die cavity before heat, finish-milling processing cavity again after heat treatment, the so far hot spherical machined shaping of finish forge cavity plate.
Then by special finish forge cavity plate (1), finish forge tooth die (5), lower push rod (4) installation, be anchored on forging equipment, it is strict to press to mould
Program ver-ify finish forge tooth die teeth groove (9) is corresponding with the center line of three convex tendons (7) of special finish forge cavity plate (1), symbol to be verified
Close after requiring, i.e., the pre-heat treatment is carried out to mould (specific preheating time determines according to the difference of preheating method).
The rough forging of step 3, forging, first by the qualified bar section of sawing, it is placed in Medium Frequency Induction Heating Furnace, according to rod
Gauge lattice, loading frequency is adjusted, that is, forge frequency (typically taking 10-14 seconds/part), then will warm up required forging temperature
The material block of (generally 950-1000 degree) is placed in the lower toothed mould of rough forge production line, starts setting for adjusted good hitting power
It is standby, material block is disposably hit, then during equipment top shoe gos up, starts Lifting Device so that planet tooth
Hot forging is taken turns, lower mode cavity is ejected by push rod in time.
The precision forging of step 4, forging, take the forging in step 3 after rough forge away using manually or mechanically hand, be placed on
In the lower toothed mould of finish forge production line, start the equipment of adjusted good hitting power, two-hit, Ran Hou are carried out to rough forge part
During equipment top shoe gos up, start Lifting Device so that planetary gear fine forge piece, lower mode cavity is ejected by push rod in time.
Step 5, using manually or mechanically hand take the forging in step 4 after finish forge away, be put in assigned position, complete row
The disposable precision forging of the straight oil groove forging of star gear sphere.
The temperature setting for carrying out the pre-heat treatment in further described step 2 to mould is 200-260 degree.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (2)
- A kind of 1. straight oil groove forging and molding processing technology on differential pinion gear sphere, it is characterised in that：Comprise the following steps：Step 1, three-dimensional modeling, first with three-dimensional software, three-dimensional modeling is carried out to part drawing, the part for generating cold conditions is three-dimensional real Body, then in conjunction with forging condition and machining situation, the machine that fixation is reserved on sphere adds surplus, with reference to the line for being forged material The coefficient of expansion and forging temperature, the shrinkage factor under required forging temperature is calculated, cold conditions forging is expanded, generates hot reality Body forging, then by hot entity forging reincarnation into hot spherical finish forge cavity plate solid modelling；The processing and processing of step 2, mould, hot spherical finish forge cavity plate solid modelling is programmed on numerical control mill and is processed, First rough milling die cavity before heat, finish-milling processing cavity again after heat treatment, the so far hot spherical machined shaping of finish forge cavity plate, then By special finish forge cavity plate, finish forge tooth die, push rod installation, it is anchored on forging equipment, it is strict to press to mould program ver-ify finish forge tooth The center line of three convex tendons of the teeth groove of shape mould and special finish forge cavity plate is corresponding, it is to be verified meet the requirements after, i.e., mould is carried out pre- Heat treatment；The rough forging of step 3, forging, first by the qualified bar section of sawing, it is placed in Medium Frequency Induction Heating Furnace, is advised according to bar Lattice, loading frequency is adjusted, that is, forge frequency, the material block that then will warm up required forging temperature is placed under rough forge production line In tooth die, start the equipment of adjusted good hitting power, material block is disposably hit, then gone up in equipment top shoe During, start Lifting Device so that the hot forging of planetary gear, lower mode cavity is ejected by push rod in time；The precision forging of step 4, forging, take the forging in upper step after rough forge away using manually or mechanically hand, be placed on essence In the lower toothed mould for forging production line, start the equipment of adjusted good hitting power, two-hit is carried out to rough forge part, then in equipment During top shoe gos up, start Lifting Device so that planetary gear fine forge piece, lower mode cavity is ejected by push rod in time；Step 5, using manually or mechanically hand take the forging in upper step after finish forge away, be put in assigned position, complete planetary gear The disposable precision forging of the straight oil groove forging of sphere.
- 2. straight oil groove forging and molding processing technology on a kind of differential pinion gear sphere according to claim 1, it is special Sign is：The temperature setting for carrying out the pre-heat treatment in described step (2) to mould is 200-260 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610160388.0A CN105855451B (en) | 2016-03-12 | 2016-03-12 | Straight oil groove forging and molding processing technology on a kind of differential pinion gear sphere |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610160388.0A CN105855451B (en) | 2016-03-12 | 2016-03-12 | Straight oil groove forging and molding processing technology on a kind of differential pinion gear sphere |
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| CN105855451A CN105855451A (en) | 2016-08-17 |
| CN105855451B true CN105855451B (en) | 2017-12-12 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026751B (en) * | 2019-05-23 | 2021-04-06 | 江苏太平洋齿轮传动有限公司 | Manufacturing method of oil groove of planetary bevel gear |
| CN113909418A (en) * | 2021-10-08 | 2022-01-11 | 青州市建富齿轮有限公司 | Forging die for drive bevel gear |
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| CN1270859A (en) * | 2000-04-29 | 2000-10-25 | 华中理工大学 | Fast metal mold producing technology |
| CN101337318A (en) * | 2008-08-07 | 2009-01-07 | 洛阳市冠华精锻齿轮总厂 | Forming method of bevel-gear forging tooth-die |
| CN101439387A (en) * | 2008-12-30 | 2009-05-27 | 洛阳市冠华精锻齿轮总厂 | Spiral angle gear accurate hot-extrusion stamp forging technique and process |
| EP2584224A1 (en) * | 2010-06-21 | 2013-04-24 | O-OKA Corporation | Gear with free curved surfaces |
| CN103286253A (en) * | 2013-05-30 | 2013-09-11 | 马鞍山市中冶机械有限责任公司 | Special-shaped deep-cavity hot-forging precision coupler knuckle die and processing method thereof |
| CN104384877A (en) * | 2014-11-13 | 2015-03-04 | 四川省雅安市羌江机械有限责任公司 | Processing process of rear axle circular cone driven gear |
| CN104690521A (en) * | 2015-03-11 | 2015-06-10 | 天长市众鑫精密锻造科技有限公司 | Forging technology of single oil groove helical gear |
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2016
- 2016-03-12 CN CN201610160388.0A patent/CN105855451B/en active Active
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| CN1270859A (en) * | 2000-04-29 | 2000-10-25 | 华中理工大学 | Fast metal mold producing technology |
| CN101337318A (en) * | 2008-08-07 | 2009-01-07 | 洛阳市冠华精锻齿轮总厂 | Forming method of bevel-gear forging tooth-die |
| CN101439387A (en) * | 2008-12-30 | 2009-05-27 | 洛阳市冠华精锻齿轮总厂 | Spiral angle gear accurate hot-extrusion stamp forging technique and process |
| EP2584224A1 (en) * | 2010-06-21 | 2013-04-24 | O-OKA Corporation | Gear with free curved surfaces |
| CN103286253A (en) * | 2013-05-30 | 2013-09-11 | 马鞍山市中冶机械有限责任公司 | Special-shaped deep-cavity hot-forging precision coupler knuckle die and processing method thereof |
| CN104384877A (en) * | 2014-11-13 | 2015-03-04 | 四川省雅安市羌江机械有限责任公司 | Processing process of rear axle circular cone driven gear |
| CN104690521A (en) * | 2015-03-11 | 2015-06-10 | 天长市众鑫精密锻造科技有限公司 | Forging technology of single oil groove helical gear |
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