CN105156635A - Differential shell and forging process and forging equipment thereof - Google Patents
Differential shell and forging process and forging equipment thereof Download PDFInfo
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- CN105156635A CN105156635A CN201510370441.5A CN201510370441A CN105156635A CN 105156635 A CN105156635 A CN 105156635A CN 201510370441 A CN201510370441 A CN 201510370441A CN 105156635 A CN105156635 A CN 105156635A
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- China
- Prior art keywords
- forging
- pulling block
- bevel gear
- hook
- heat treatment
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
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- 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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a novel pit-type vacuum heat treatment furnace and a heat treatment process thereof. The vacuum heat treatment furnace comprises a furnace body 1, a cover body 2 and a motor 3 which is arranged on the top of the cover body 2 and provided with stirring wings. A groove is formed in the top end of the furnace body 1 along the periphery of the furnace body 1. A boss capable of being buckled in the groove is formed in the peripheral direction of the cover body 2. When sealing is conducted, the boss is buckled in the groove, the groove is filled with fine sand at the joint of the groove and the boss, and thus the joint of the groove and the boss is covered. Due to the fact that the joint of the groove and the boss is covered with the fine sand, no sealing ring is used any more, and the use cost of the heat treatment furnace is greatly lowered; meanwhile, the situation that a sealed position is not sealed completely due to deformation of a sealing ring is avoided, and the vacuum state is maintained all the time in the heat treatment procedure. By the adoption of the process method, the heat treatment process level and the metallicity of parts are improved.
Description
Technical field
The present invention relates to a kind of driven helical bevel gear combination forging, specifically driven helical bevel gear and be positioned at the integrated forging structure of differential casing of gear side.
Background technique
Helical bevel gear is the key components and parts of automobile drive axle transmission system.In Automobile Transportation process, bear and underspeed, increase moment of torsion, and change the effect in transmission of torque direction.The operating conditions of the helical bevel gear of main reducing gear of drive axle is quite severe, compared with other gears of power train, has that load is large, a feature such as long action time, change are many, carrying impact.
The helical bevel gear of main reducing gear has two effects, and first is change the direction of power transmission, and second is provide a common velocity ratio as each gear that extends to of speed changer.The output of speed changer is the moment around vertical axes, and wheel must rotate around the transverse axis of vehicle, and this just needs a device to change the transmission direction of power.Why be main reducing gear, be exactly because no matter speed changer is on what gear, the velocity ratio of this device is all a factor of resultant gear ratio.Had this velocity ratio, can effectively reduce the requirement of the slowing down power(SDP) to speed changer, the benefit of design is like this size that can effectively reduce speed changer, makes the general arrangement of vehicle more reasonable.
The topmost effect of automobile main reducer is exactly that deceleration increasing is turned round.We know that the output power of motor is certain, the formula W=M*v(power=moment of torsion * speed according to power), after transmission speed being lowered by main reducing gear, can higher output torque be obtained, thus obtain larger driving force.In addition, automobile main reducer also change Power output direction, realized the differential function of left and right wheels differential or middle back axle by differential mechanism.
Existing ransaxle transmission system mainly comprises two-part, one be main reducing gear, two is differential mechanisms, the transmission of both power is, by bolt, the housing of the driven helical bevel gear of main reducing gear and differential mechanism is carried out bolton connection, differential mechanism rotating is driven by driven helical bevel gear, thus the change in the direction of the transmission of realizable force and power.
This kind of mode brings following problem:
Because both are connected by bolt, its intensity is because above-mentioned Placement receives impact, therefore in order to meet the demands, not only will the helical bevel gear of main reducing gear do do greatly thick, and this kind of mode also increases the weight of differential casing undoubtedly, is unfavorable for the passing capacity of vehicle and further realizes lightweight.
In order to strengthen intensity and the bearing capacity of the helical bevel gear of main reducing gear, external diameter and the thickness of driven helical bevel gear can only be increased, also increasing size and the weight of ransaxle, and reducing the passing capacity of automobile.
And the differential casing be bolted with driven helical bevel gear, body is cast structure, and its production technology determines can there be trachoma in housing, and once after having trachoma, has a strong impact on the working life of differential mechanism, and then affects the life-span of car load.
For solving the technical problem of above-mentioned existence, the invention provides a kind of driven helical bevel gear combination forging, it is characterized in that: comprise driven helical bevel gear and be positioned at the differential casing of gear side, described driven helical bevel gear and be positioned at the integrated forging structure of differential casing of gear side, this passive bevel gear combination forging, by driven helical bevel gear and the integrated forging structure of differential casing being positioned at gear side, compared with prior art, overall cost reduces, there is intensity good, life-span is long, automobile passing capacity is strong, the advantage that lightweight is good.
As metal workpiece, its heat treatment is the operation that a ratio does not lack; Existing stove is all a stove one stove process, and namely process a collection of another batch of reprocessing, this kind of process brings a lot of problem;
1, efficient low, the piece count of each process is limited, can not form the production of continization.
2, complex procedures, after existing stove hyperthermic treatment is complete, needs to continue manually to be taken out by workpiece, and then manually loads new workpiece, and labor intensity is large on the one hand, and two is that the temperature of workpiece is all released in plant building, causes waste.
Summary of the invention
For solving the technical problem of above-mentioned existence, the invention provides a kind of passive bevel gear combination forging and its Forging Technology forging equipment, this passive bevel gear combination forging, by driven helical bevel gear and the integrated forging structure of differential casing being positioned at gear side, compared with prior art, overall cost reduces, and has the advantage that intensity is good, the life-span long, automobile passing capacity is strong, lightweight is good.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of driven helical bevel gear combination forging, is characterized in that driven helical bevel gear and is positioned at the integrated forging structure of differential casing of gear side.
Preferably, described driven gear is driven helical bevel gear.
A heat treatment process before the forging of driven helical bevel gear combination forging, before workpiece forging, by blank heating in medium frequency 2 minutes, be heated to 1100 ± 50 DEG C, allow rear use 2 tons of pneumatic hammers carry out jumping-up, carry out mould closed-die forging with 4000 tons of screw presses shaping, then use 300 tons of punch press punchings.
A kind of heat treatment after forging isothermal normalizing technique of driven helical bevel gear combination forging, after workpiece forging, the isothermal normalizing technique of workpiece is: be heated to 920 ~ 950 DEG C, be incubated after 2 ~ 4 hours, by rapid cooling and slow cooling 5 ~ 8 minutes, after being cooled to 650 ~ 600 DEG C, then carry out 600 DEG C isothermal cooling 2 ~ 4 hours after, go out firehole cold.
For a heat treatment equipment for driven helical bevel gear combination forging, comprise support body, support body is provided with Dual-layer ring track, and the vertical projection of Dual-layer track overlaps; Get on the right track and be provided with the loop chain of motion; On loop chain, interval arranges and has driven drag hook, described drag hook comprises horizontal coupler body and is positioned at the hook at coupler body rear, and the front portion of coupler body is hinged, and makes the center of gravity of drag hook be positioned at the rear portion of close drag hook, make drag hook when only at gravity, the hook of drag hook is sagging; Lower floor's ring track comprise can move in orbit by pulling block, described is comprised the block being positioned at upper end by pulling block, the upper end open of block is V-shaped, along with the motion of drag hook, the rear and front end opening of V-type opening contacts with drag hook coupler body, and the hook end of drag hook tilts, and hook does not contact with by pulling block; Two rollers coordinated with ring track are respectively provided with by the both sides, middle part of pulling block; By the lower end suspension rod of pulling block, suspension rod is provided with for carrying handling member; At least be provided with a body of heater in the below of lower ring track, the middle part of body of heater is provided with and supplies suspension rod to pass through and supply heat treated passage; The front end of passage is provided with a horizontal plate perpendicular to current location, and horizontal plate can stretch into or exit by the motion front of pulling block; When horizontal plate extend into the forefront by pulling block, coupler body contacts with horizontal plate always, and lifted by the hook being positioned at rear, tractive is not by pulling block; When horizontal plate exits the forefront by pulling block, coupler body is through the V-type open front of most previous stage, and soaring in coupler body lower end, is fallen under gravity by the hook being positioned at rear, tractive be positioned at most previous stage by pulling block.
Preferably, described lower ring track is double track structure: outer rail and interior rail; Above-mentioned is coordinated with outer rail and interior rail respectively by the roller of the both sides of pulling block, is provided with former and later two Rotary cloumns by pulling block, and described Rotary cloumn is just in time between outer rail and interior rail.
Preferably, the passage front and back position of described stove is provided with sealed door, described sealed door comprises left right half door body, the left and right external side end of plate door is hinged, interior side direction bearing of trend two halves door body forms " > " shape, have tractive spring with two body tractives, the side of door body is provided with locating stud.
For solving the technical problem of above-mentioned existence, the present invention has abandoned original split modular structure, housing and gear has been carried out forging integrated design, directly forges integrally-built passive bevel gear combination forging by forging.
Described forging equipment comprise mainly comprise ring track, drag hook, by pulling block and body of heater.
Wherein ring track is provided with upper and lower two, and upper ring track is mainly used in carrying drag hook, and is moved by chain-driving drag hook; Lower railway is mainly used in carrying by pulling block.
Drag hook mainly coordinates with by pulling block, for pulling by pulling block, drag hook is divided into two-part---coupler body and hook, wherein the front portion of coupler body is hinged, rear portion is carried out as hook, when coupler body bottom surface is with when being contacted by the upper-end surface of pulling block, be positioned at the hook of front end by jack-up, thus ensure could to draw by hook when needs hook draws.
V-type opening is become by the design of the upper end of pulling block, two end faces have been there are like this by the both sides, upper end of pulling block, two end faces realize two objects, one is that hook can catch on by the front end of pulling block by this V-type opening, and two by after setting before and after pulling block, after many rows are arranged before and after pulling block, along with travelling forward of drag hook, the front interval of drag hook is touched, and hook can not catch on middle part or the coupler body of rear end, only can catch on be positioned at most previous stage by pulling block.
Body of heater is positioned at the below of ring track, and for the heat treatment process of some multiple operation process, can add the number of body of heater as required, thus realize the heat treatment of continization, heat treatment efficiency significantly promotes.
Front end and the rear end of body of heater are provided with sealed door, and the gateway of body of heater can seal by sealed door, ensure the temperature in stove, and meanwhile, the middle part of body of heater is the position of heating, can carry out preheating when entering body of heater; First slowly body of heater can be departed from again after cooling segment after heat treatment; Improve thermal effectiveness and heat utilization efficiency.
Beneficial effect of the present invention shows:
1, intensity is higher: integral structure of the present invention is compared to original split-type structural, and its intensity is higher, can better meet cooperation demand.
2, lightweight is good: compared with original structure, and the structure of this integration can save more than 40% in weight and volume.
3, the life-span is longer: compared with original cast structure, avoids the defect of trachoma, there will not be the phenomenons such as fracture.
Accompanying drawing explanation
Fig. 1 is differential mechanism casing structure schematic diagram of the present invention;
Fig. 2 is this apparatus structure plan structure schematic diagram;
Fig. 3 is that master looks partial structurtes schematic diagram;
Fig. 4 is furnace binding schematic diagram.
Embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments:
Shown in Fig. 1, a kind of passive bevel gear combination forging, comprises driven helical bevel gear 2 and is positioned at the differential casing 1 of gear side.
The passive bevel gear combination forging of the present embodiment is formed by mould forging, the therefore gear ring 2(gear of the present embodiment) and the integrated forging structure of enclosure body 1, but not the structure of original bolton.
A heat treatment process before the forging of driven helical bevel gear combination forging, before workpiece forging, by blank heating in medium frequency 2 minutes, be heated to 1100 ± 50 DEG C, allow rear use 2 tons of pneumatic hammers carry out jumping-up, carry out mould closed-die forging with 4000 tons of screw presses shaping, then use 300 tons of punch press punchings.
The conventional process of automobile gearbox gear, axial workpiece forging stock heat treatment in advance is normalizing process.Object being to obtain evenly, close to the tissue (ferrite and pearlite) of desirable balance state and suitable hardness range (160-190HB), being out of shape to improve machinability and to control finished heat treatment.
A kind of heat treatment after forging isothermal normalizing technique of driven helical bevel gear combination forging, after workpiece forging, the isothermal normalizing technique of workpiece is: be heated to 920 ~ 950 DEG C, be incubated after 2 ~ 4 hours, by rapid cooling and slow cooling 5 ~ 8 minutes, after being cooled to 650 ~ 600 DEG C, then carry out 600 DEG C isothermal cooling 2 ~ 4 hours after, go out firehole cold.
A kind of passive bevel gear combination forging heat treatment equipment, comprise support body, support body is provided with Dual-layer ring track, and the vertical projection of Dual-layer track overlaps, shown in Fig. 2; Wherein get on the right track and be provided with the loop chain of motion.
On loop chain, interval arranges and has driven drag hook, shown in Fig. 3, described drag hook comprises horizontal coupler body and is positioned at the hook 12 at coupler body 11 rear, the front portion of coupler body 11 is hinged, and make the center of gravity of drag hook be positioned at the rear portion of close drag hook, make drag hook when only at gravity, the hook 12 of drag hook is sagging, for pulling by pulling block 3.
Lower floor's ring track comprise can move in orbit by pulling block 3, described is comprised by pulling block 3 block being positioned at upper end, and the upper end open of block is V-shaped.Two rollers coordinated with ring track 4 are respectively provided with by the both sides, middle part of pulling block.
In the present embodiment, lower floor's ring rail is adopted the structure of inside and outside ring: outer rail and interior rail; Be inserted with position rotating column 7(position rotating column 7 between interior outer rail to be plugged in the cell body that inside and outside ring directly formed), position rotating column 7 is fixed on by pulling block, is slidably arranged on lower floor's ring rail like this by pulling block 3 by position rotating column 7, roller 4.
Met by the V-type Opening length of pulling block 3: along with the motion of drag hook, the rear and front end opening of V-type opening contacts with drag hook coupler body, and hook 12 end of drag hook tilts, and hook 12 does not contact with by pulling block 3; When have a front and back close contact multiple by pulling block time, drag hook only the most previous stage of stretchy by pulling block.Shown in Fig. 2, but Fig. 2 is only three is schematic explanation by pulling block 3 side by side, can not get rid of multiple by possibility arranged side by side before and after pulling block 3.
A suspension rod 5 has been hung in each lower end by pulling block 3, and suspension rod 5 is provided with the workpiece that can manually carry need to be processed; Then workpiece is after a circle, then by manually being taken off by existing instrument.Realize circulation.
At least be provided with a body of heater 6 in the below of lower ring track, the quantity of body of heater 6 can set as required, and the present embodiment is provided with two bodies of heater 6.
The middle part of body of heater 6 is provided with and supplies suspension rod to pass through and supply heat treated passage;
Because heat treatment needs the time, workpiece can not successionally move, therefore interval is needed, that is drag hook can not pull by draw piece 3 always, and for solving this problem, the invention arranges a horizontal plate 8, generally can be arranged on several position: position one, the front portion (making the workpiece in body of heater meet the needs of heating time) of body of heater, position two, (is placed in the state of queuing up and being about to enter) before not entering body of heater by workpiece.
Horizontal plate, horizontal plate can stretch into or exit by the front of pulling block, and the moving direction of horizontal plate is just in time vertical by the moving direction of pulling block with through current location.
When horizontal plate extend into the forefront by pulling block, coupler body contacts with horizontal plate always, and lifted by the hook being positioned at rear, tractive is not by pulling block; When horizontal plate exits the forefront by pulling block, coupler body is through the V-type open front of most previous stage, and soaring in coupler body lower end, is fallen under gravity by the hook being positioned at rear, tractive be positioned at most previous stage by pulling block.
The passage front and back position of described body of heater 6 is provided with sealed door, shown in Fig. 4, described sealed door comprises left right half door body 61, left right half door body 61 outboard end is hinged, interior side direction bearing of trend two halves door body forms " > " shape, have tractive spring 62 with two body tractives, the side of door body is provided with locating stud 63.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
But conventional normalizing stows owing to adopting by device-restrictive, cooling in heap mode and the type of cooling, can cause between different part or the bigger difference of the rate of cooling of Same Part different parts and tissue, stress and hardness, cause machinability to worsen and finished heat treatment distortion increasing, thus reduce accuracy of gear grade and the usability affecting gear.
Along with the raising of automobile industry middle gear, axial workpiece grade of accuracy, adopt conventional normalizing process can not adapt to the requirement of producing, our company undergoes technological transformation for this reason, cooperate with institution of higher learning, devise suspended isothermal normalizing production line, following requirement is reached by application isothermal normalizing production technology
1, metallographic rank is P+F≤3 grade, according to GB/T13320-2007 second group grading
2, grain size is 6-8 level.
3, banded structure: according to GB/T13299-1991 evaluation ,≤3 grades.
4, without bainite.
5, hardness and uniformity thereof: hardness between 160-190HB, same cross section, same blank diverse location difference of hardness≤8HB, different blank difference of hardness≤15HB.
Reach the object improving gear cutting processability and control finished heat treatment distortion.
Claims (7)
1. a driven helical bevel gear combination forging, is characterized in that driven helical bevel gear and is positioned at the integrated forging structure of differential casing of gear side.
2. driven helical bevel gear combination forging according to claim 1, is characterized in that: described driven gear is driven helical bevel gear.
3. heat treatment process before the forging of a driven helical bevel gear combination forging, it is characterized in that: before workpiece forging, by blank heating in medium frequency 2 minutes, be heated to 1100 ± 50 DEG C, rear use 2 tons of pneumatic hammers are allowed to carry out jumping-up, carry out mould closed-die forging with 4000 tons of screw presses shaping, then use 300 tons of punch press punchings.
4. the heat treatment after forging isothermal normalizing technique of a driven helical bevel gear combination forging, it is characterized in that: after workpiece forging, the isothermal normalizing technique of workpiece is: be heated to 920 ~ 950 DEG C, be incubated after 2 ~ 4 hours, by rapid cooling and slow cooling 5 ~ 8 minutes, after being cooled to 650 ~ 600 DEG C, then carry out 600 DEG C isothermal cooling 2 ~ 4 hours after, go out firehole cold.
5., for a heat treatment equipment for driven helical bevel gear combination forging, it is characterized in that: comprise support body, support body is provided with Dual-layer ring track, and the vertical projection of Dual-layer track overlaps; Get on the right track and be provided with the loop chain of motion; On loop chain, interval arranges and has driven drag hook, described drag hook comprises horizontal coupler body and is positioned at the hook at coupler body rear, and the front portion of coupler body is hinged, and makes the center of gravity of drag hook be positioned at the rear portion of close drag hook, make drag hook when only at gravity, the hook of drag hook is sagging; Lower floor's ring track comprise can move in orbit by pulling block, described is comprised the block being positioned at upper end by pulling block, the upper end open of block is V-shaped, along with the motion of drag hook, the rear and front end opening of V-type opening contacts with drag hook coupler body, and the hook end of drag hook tilts, and hook does not contact with by pulling block; Two rollers coordinated with ring track are respectively provided with by the both sides, middle part of pulling block; By the lower end suspension rod of pulling block, suspension rod is provided with for carrying handling member; At least be provided with a body of heater in the below of lower ring track, the middle part of body of heater is provided with and supplies suspension rod to pass through and supply heat treated passage; The front end of passage is provided with a horizontal plate perpendicular to current location, and horizontal plate can stretch into or exit by the motion front of pulling block; When horizontal plate extend into the forefront by pulling block, coupler body contacts with horizontal plate always, and lifted by the hook being positioned at rear, tractive is not by pulling block; When horizontal plate exits the forefront by pulling block, coupler body is through the V-type open front of most previous stage, and soaring in coupler body lower end, is fallen under gravity by the hook being positioned at rear, tractive be positioned at most previous stage by pulling block.
6. the heat treatment equipment for driven helical bevel gear combination forging according to claim 5, is characterized in that: described lower ring track is double track structure: outer rail and interior rail; Above-mentioned is coordinated with outer rail and interior rail respectively by the roller of the both sides of pulling block, is provided with former and later two Rotary cloumns by pulling block, and described Rotary cloumn is just in time between outer rail and interior rail.
7. the heat treatment equipment for driven helical bevel gear combination forging according to claim 5, it is characterized in that: the passage front and back position of described stove is provided with sealed door, described sealed door comprises left right half door body, the left and right external side end of plate door is hinged, interior side direction bearing of trend two halves door body forms " > " shape, have tractive spring with two body tractives, the side of door body is provided with locating stud.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510370441.5A CN105156635A (en) | 2015-06-30 | 2015-06-30 | Differential shell and forging process and forging equipment thereof |
| CN201710362734.8A CN107400767B (en) | 2015-06-30 | 2015-06-30 | A kind of heat treatment equipment for driven spiral bevel gear combination forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510370441.5A CN105156635A (en) | 2015-06-30 | 2015-06-30 | Differential shell and forging process and forging equipment thereof |
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| CN201710362734.8A Division CN107400767B (en) | 2015-06-30 | 2015-06-30 | A kind of heat treatment equipment for driven spiral bevel gear combination forging |
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| CN105156635A true CN105156635A (en) | 2015-12-16 |
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| CN201710362734.8A Active CN107400767B (en) | 2015-06-30 | 2015-06-30 | A kind of heat treatment equipment for driven spiral bevel gear combination forging |
| CN201510370441.5A Pending CN105156635A (en) | 2015-06-30 | 2015-06-30 | Differential shell and forging process and forging equipment thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113010976A (en) * | 2021-02-09 | 2021-06-22 | 中国航发哈尔滨东安发动机有限公司 | Helicopter main reducer shell strength simulation method |
| CN114309390A (en) * | 2022-01-27 | 2022-04-12 | 河北同锐机械制造有限公司 | Forging treatment process of shell forging |
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| CN102009119A (en) * | 2010-10-15 | 2011-04-13 | 重庆富川机电有限公司 | Vertical double-end face forging process of primary driving tooth blank |
| CN202007880U (en) * | 2011-03-31 | 2011-10-12 | 包头北奔重型汽车有限公司 | Driven bevel gear with differential half casing |
| CN202215704U (en) * | 2011-07-05 | 2012-05-09 | 江苏创一精锻有限公司 | Integrally-forged net shape high-toughness square groove bevel gear |
| CN103846619A (en) * | 2012-12-06 | 2014-06-11 | 浙江美亚特精密机械有限公司 | Precision-forged combined body cold forging process and realization device thereof |
| CN203363058U (en) * | 2013-06-25 | 2013-12-25 | 重庆巨泰机械有限公司 | Bevel gear with fan-shaped combined grooves |
| CN103707019A (en) * | 2013-12-12 | 2014-04-09 | 浙江浦江齿轮有限公司 | Processing process of internal spline gear blank used in agricultural machinery equipment transmission case |
| CN205078726U (en) * | 2015-06-30 | 2016-03-09 | 山东温岭精锻科技有限公司 | 485 driven spiral bevel gear of series combination forging |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113010976A (en) * | 2021-02-09 | 2021-06-22 | 中国航发哈尔滨东安发动机有限公司 | Helicopter main reducer shell strength simulation method |
| CN114309390A (en) * | 2022-01-27 | 2022-04-12 | 河北同锐机械制造有限公司 | Forging treatment process of shell forging |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107400767A (en) | 2017-11-28 |
| CN107400767B (en) | 2018-12-11 |
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Application publication date: 20151216 |