CN105522086A - Compound extruding-forging forming method of automobile transmission shaft slip yoke - Google Patents
Compound extruding-forging forming method of automobile transmission shaft slip yoke Download PDFInfo
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- CN105522086A CN105522086A CN201510259256.9A CN201510259256A CN105522086A CN 105522086 A CN105522086 A CN 105522086A CN 201510259256 A CN201510259256 A CN 201510259256A CN 105522086 A CN105522086 A CN 105522086A
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Abstract
The invention relates to the field of metal plastic forming and specifically relates to a compound extruding-forging forming method of an automobile transmission shaft slip yoke. The present invention employs the following technical solution: the compound extruding-forging forming method of the automobile transmission shaft slip yoke comprises the following steps: (1) blanking by sawing; (2) heating; (3) clamping and pressing forming; (4) splitting forming; (5) pre-forming; and (6) final forging.
Description
Technical field
The present invention relates to a kind of metal forming field, be specifically related to a kind of method of vehicle transmission shaft sliding fork Compound Extrusion forging and molding.
Background technology
Truck drive shaft is the vitals of transfer motion power in automotive transmission, and its effect is and gearbox, drive axle together by the power transmission of engine to wheel, make automobile produce drive.The slip yoke of power transmission shaft is positioned at the end of power transmission shaft, Main Function: one is transmitting torque, makes automobile obtain the power advanced.Two is when automobile axle leaf spring is in different conditions, by length and the position thereof of its adjustment power transmission shaft.Axle portion hollow is splined hole, and coordinate with propeller shaft yoke and form free-sliding spline pair, often bear alternate load and shock loading, easy fatigue rupture, work under bad environment, quality requirement is high.
Traditional universal outer sliding pair is that universal-joint fork and slip cap are welded, and the electric welded steel pipe that slip cap then rolls for low carbon steel plate is made, and manufacturing cost is high, and service time is short, can not meet the requirement of present auto industry.The open die forging, impressing forging technique that current domestic each main forge plant mainly adopts axle portion solid, produce integrally-built universal slip yoke, a part (slip cap) for universal-joint fork and outer free-sliding spline pair is combined, become a part, its service life, compared with traditional universal joint slip cap component, increases exponentially, and intensity is high, handling ease, cost is low, but axle portion solid forging and have large overlap.A lot of enterprise and universities and colleges carry out non-trimming Forging Technology now, do not produce overlap or thin-sheet, reach near-net-shape or be only shaped, but thoroughly do not solve the hollow problem of slip yoke.
Summary of the invention
The invention provides a kind of method of vehicle transmission shaft sliding fork Compound Extrusion forging and molding, solve propeller shaft slip fork hollow forming, save material, reduce machining cost, improve metal streamline, improve part performance, extend the problem in part service life.
The technical solution used in the present invention is: a kind of method of vehicle transmission shaft sliding fork Compound Extrusion forging and molding, comprises the following steps:
(1) sawing: design forging is respectively shaped the shape of work step, and ensures suitable ratio of height to diameter, calculates the size of bar, then sawing based on volume equal principle;
(2) heat: lower good bar entirety is put into intermediate frequency furnace and heats, be warmed up to 1100 ~ 1180 DEG C;
(3) card pressing formation: the blank heated is taken out be placed on punch press and carry out card pressure in card compression mould, block termination groove;
(4) split material to be shaped: the blank after being pressed by card is put into the enclosed split mould being preheated to 150 ~ 200 DEG C and carried out splitting material;
(5) blocking: the Preform Die that the curve parting line structure being preheated to 150 ~ 200 DEG C put into by the blank after riving carries out blocking, prong and first step hole once-forming in blocker, gradient is not put in lower tringle chamber portion, and die holder installs stripper additional, and counterdie establishes Lifting Device;
(6) finish-forging: the finish-forging die of the curve parting line structure being preheated to 150 ~ 200 DEG C put into by pre-forging, finish-forging is shaped and forges finish-forging part, finisher is only anti-squeezes second step hole, die holder installs stripper additional, and counterdie has liftout attachment, and drift adopts H13 steel, after normalizing, quenching, double tempering, surface finish process.
Further, the finish-forging die in the split mould in the card compression mould in step (3), step (4), the Preform Die in step (5), step (6) is designed to block insert type, and material is 5CrNiMoA.
Further, the finish-forging die in the split mould in step (4), the Preform Die in step (5), step (6) makes compensation when designing to the distortion of mould and blank and thermal expansion.
The present invention has following beneficial effect:
(1) stock utilization is high, can save 20 ~ 25% of Master Cost;
(2) problem of propeller shaft slip fork hollow forging is thoroughly solved, avoid boring and reaming that follow-up machined sequence carries out whole axle portion endoporus, only remove gross weight bottom a small amount of blank, saved a large amount of process time, production efficiency significantly improves, and reduces production cost;
(3) the propeller shaft slip fork spline position of forging has fine and close metal structure, and have the continuous metal streamline distributed vertically, improve the bending strength of internal spline, fatigue strength, resistance to impact, higher than the forging products that traditional handicraft is produced, mechanical property is good, long service life.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention;
Fig. 2 is propeller shaft slip fork forging drawing;
Fig. 3 is propeller shaft slip fork blank;
Fig. 4 is propeller shaft slip fork compression mould;
Fig. 5 is blank shape after propeller shaft slip fork blocking;
Fig. 6 is propeller shaft slip fork diverging die;
Fig. 7 is blank shape after the split of propeller shaft slip fork;
Fig. 8 is propeller shaft slip fork Preform Die;
Fig. 9 is blank shape after propeller shaft slip fork blocking;
Figure 10 is propeller shaft slip fork finish-forging die.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
Embodiment 1
A kind of method of vehicle transmission shaft sliding fork (Fig. 2) Compound Extrusion forging and molding, comprises the following steps:
(1) sawing: design forging is respectively shaped the shape of work step, and ensures suitable ratio of height to diameter, calculates the size of bar, then sawing based on volume equal principle;
(2) heat: lower good bar (Fig. 3) entirety is put into intermediate frequency furnace heating, be warmed up to 1100 ~ 1180 DEG C;
(3) card pressing formation: the blank heated is taken out be placed on punch press and carry out card pressure in card compression mould (Fig. 4), block termination groove (Fig. 5);
(4) split material to be shaped: the blank card pressure head after being pressed by card upward, is put into the enclosed split mould (Fig. 6) being preheated to 150 ~ 200 DEG C and carried out splitting material, make head be split into fork-shaped, extrude locating hole;
(5) blocking: the Preform Die (Fig. 8) that the curve parting line structure being preheated to 150 ~ 200 DEG C put into by the blank (Fig. 7) after riving carries out blocking, prong and first step hole once-forming in blocker, gradient is not put in lower tringle chamber portion, die holder installs stripper additional, counterdie establishes Lifting Device, extrudes pre-forging;
(6) finish-forging: the finish-forging die (Figure 10) of the curve parting line structure being preheated to 150 ~ 200 DEG C put into by pre-forging (Fig. 9), finish-forging is shaped and forges finish-forging part, finisher is only anti-squeezes second step hole, and die holder installs stripper additional, and counterdie has liftout attachment, drift adopts H13 steel, after normalizing, quenching, double tempering, surface finish process.
Further, the finish-forging die in the split mould in the card compression mould in step (3), step (4), the Preform Die in step (5), step (6) is designed to block insert type, and material is 5CrNiMoA.
Further, the finish-forging die in the split mould in step (4), the Preform Die in step (5), step (6) makes compensation when designing to the distortion of mould and blank and thermal expansion.
Slip yoke forging forming method in the present invention adopts Hot-extrusion forging and molding on hotdie forging press.Punch press carries out termination horizontal card pressure, hot die forging press carries out vertical split, blocking and finish-forging, die joint is prong curve parting line.
The present invention should control the time of each operation, and procedure connection is as far as possible compact, and after finish-forging is terminated, the temperature of forging is still in the phase change line of material therefor.
The present invention effectively improves stock utilization, reduces cost, and solve the problem of propeller shaft slip fork hollow forging, forging products mechanical property is good, long service life.
Claims (3)
1. a method for vehicle transmission shaft sliding fork Compound Extrusion forging and molding, is characterized in that: comprise the following steps:
(1) sawing: design forging is respectively shaped the shape of work step, and ensures suitable ratio of height to diameter, calculates the size of bar, then sawing based on volume equal principle;
(2) heat: lower good bar entirety is put into intermediate frequency furnace and heats, be warmed up to 1100 ~ 1180 DEG C;
(3) card pressing formation: the blank heated is taken out be placed on punch press and carry out card pressure in card compression mould, block termination groove;
(4) split material to be shaped: the blank after being pressed by card is put into the enclosed split mould being preheated to 150 ~ 200 DEG C and carried out splitting material;
(5) blocking: the Preform Die that the curve parting line structure being preheated to 150 ~ 200 DEG C put into by the blank after riving carries out blocking, prong and first step hole once-forming in blocker, gradient is not put in lower tringle chamber portion, and die holder installs stripper additional, and counterdie establishes Lifting Device;
(6) finish-forging: the finish-forging die of the curve parting line structure being preheated to 150 ~ 200 DEG C put into by pre-forging, finish-forging is shaped and forges finish-forging part, finisher is only anti-squeezes second step hole, and die holder installs stripper additional, and counterdie has liftout attachment, drift adopts H13 steel, after normalizing, quenching, double tempering, surface finish process.
2. the method for a vehicle transmission shaft sliding fork Compound Extrusion forging and molding according to claim 1, it is characterized in that: the finish-forging die in the split mould in the card compression mould in step (3), step (4), the Preform Die in step (5), step (6) is designed to block insert type, and material is 5CrNiMoA.
3. a method for vehicle transmission shaft sliding fork Compound Extrusion forging and molding according to claim 1 and 2, is characterized in that: the Preform Die in the split mould in step (4), step (5), the finish-forging die in step (6) make compensation when designing to the distortion of mould and blank and thermal expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259256.9A CN105522086A (en) | 2015-05-21 | 2015-05-21 | Compound extruding-forging forming method of automobile transmission shaft slip yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259256.9A CN105522086A (en) | 2015-05-21 | 2015-05-21 | Compound extruding-forging forming method of automobile transmission shaft slip yoke |
Publications (1)
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| CN105522086A true CN105522086A (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510259256.9A Pending CN105522086A (en) | 2015-05-21 | 2015-05-21 | Compound extruding-forging forming method of automobile transmission shaft slip yoke |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398678A (en) * | 2017-06-20 | 2017-11-28 | 万向钱潮传动轴有限公司 | A kind of power transmission shaft Welded fork closing forging hot extrusion molding technique |
| CN107649639A (en) * | 2017-07-31 | 2018-02-02 | 中车大连机车车辆有限公司 | Locomotive slip yoke forging technology |
| CN109226624A (en) * | 2018-08-29 | 2019-01-18 | 江阴南工锻造有限公司 | A kind of eccentric shaft and its moulding process |
| WO2020155559A1 (en) * | 2019-01-30 | 2020-08-06 | 江苏格尔顿传动有限公司 | Transmission shaft yoke die forgoing having high production efficiency, and processing method therefor |
| CN111659847A (en) * | 2020-06-10 | 2020-09-15 | 杭州具彩网络科技有限公司 | A integrative forging press of forging and pressing rough blank for pliers processing |
| CN114632832A (en) * | 2022-03-14 | 2022-06-17 | 唐山市仁和五金工具有限责任公司 | Production process of steel fork |
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| JPS5277856A (en) * | 1975-12-19 | 1977-06-30 | Press Und Stanzwerk Ag | Method of producing uushaped article and device for executing same |
| CN1046865A (en) * | 1990-05-21 | 1990-11-14 | 华中理工大学 | Automobile transmission shaft universal-joint fork extrusion forging process and mould thereof |
| US20050115296A1 (en) * | 2001-12-26 | 2005-06-02 | Masahiro Sato | Method for manufacturing universal joint yoke, forging die and preform |
| CN1785550A (en) * | 2005-11-08 | 2006-06-14 | 内蒙古第一机械制造（集团）有限公司 | Forging method of soliding fork |
| CN102873240A (en) * | 2012-09-27 | 2013-01-16 | 许昌中兴锻造有限公司 | Non-flash forging process for middle flanges of transmission shafts |
| CN103121075A (en) * | 2013-03-07 | 2013-05-29 | 上海交通大学 | Hot forging method for transmission shaft yoke with horizontal yoke part |
| CN104525816A (en) * | 2014-12-05 | 2015-04-22 | 万向钱潮传动轴有限公司 | Forging device and process for flange yoke of transmission shaft |
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2015
- 2015-05-21 CN CN201510259256.9A patent/CN105522086A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5277856A (en) * | 1975-12-19 | 1977-06-30 | Press Und Stanzwerk Ag | Method of producing uushaped article and device for executing same |
| CN1046865A (en) * | 1990-05-21 | 1990-11-14 | 华中理工大学 | Automobile transmission shaft universal-joint fork extrusion forging process and mould thereof |
| US20050115296A1 (en) * | 2001-12-26 | 2005-06-02 | Masahiro Sato | Method for manufacturing universal joint yoke, forging die and preform |
| CN1785550A (en) * | 2005-11-08 | 2006-06-14 | 内蒙古第一机械制造（集团）有限公司 | Forging method of soliding fork |
| CN102873240A (en) * | 2012-09-27 | 2013-01-16 | 许昌中兴锻造有限公司 | Non-flash forging process for middle flanges of transmission shafts |
| CN103121075A (en) * | 2013-03-07 | 2013-05-29 | 上海交通大学 | Hot forging method for transmission shaft yoke with horizontal yoke part |
| CN104525816A (en) * | 2014-12-05 | 2015-04-22 | 万向钱潮传动轴有限公司 | Forging device and process for flange yoke of transmission shaft |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398678A (en) * | 2017-06-20 | 2017-11-28 | 万向钱潮传动轴有限公司 | A kind of power transmission shaft Welded fork closing forging hot extrusion molding technique |
| CN107649639A (en) * | 2017-07-31 | 2018-02-02 | 中车大连机车车辆有限公司 | Locomotive slip yoke forging technology |
| CN109226624A (en) * | 2018-08-29 | 2019-01-18 | 江阴南工锻造有限公司 | A kind of eccentric shaft and its moulding process |
| WO2020155559A1 (en) * | 2019-01-30 | 2020-08-06 | 江苏格尔顿传动有限公司 | Transmission shaft yoke die forgoing having high production efficiency, and processing method therefor |
| CN111659847A (en) * | 2020-06-10 | 2020-09-15 | 杭州具彩网络科技有限公司 | A integrative forging press of forging and pressing rough blank for pliers processing |
| CN114632832A (en) * | 2022-03-14 | 2022-06-17 | 唐山市仁和五金工具有限责任公司 | Production process of steel fork |
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Application publication date: 20160427 |