CN204209052U - Transmission shaft fork axle finish-forging die - Google Patents

Transmission shaft fork axle finish-forging die Download PDF

Info

Publication number
CN204209052U
CN204209052U CN201420654606.2U CN201420654606U CN204209052U CN 204209052 U CN204209052 U CN 204209052U CN 201420654606 U CN201420654606 U CN 201420654606U CN 204209052 U CN204209052 U CN 204209052U
Authority
CN
China
Prior art keywords
forging
finish
hole
counterdie
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201420654606.2U
Other languages
Chinese (zh)
Inventor
胡卫华
孟会涛
丁圣杰
张恒
陈喜乐
安伟浩
宋航
李士英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuchang Yuandong Drive Shaft Co Ltd
Xuchang Zhongxing Forging Co Ltd
Original Assignee
Xuchang Yuandong Drive Shaft Co Ltd
Xuchang Zhongxing Forging Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xuchang Yuandong Drive Shaft Co Ltd, Xuchang Zhongxing Forging Co Ltd filed Critical Xuchang Yuandong Drive Shaft Co Ltd
Priority to CN201420654606.2U priority Critical patent/CN204209052U/en
Application granted granted Critical
Publication of CN204209052U publication Critical patent/CN204209052U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

Transmission shaft fork axle finish-forging die, comprise finish-forging patrix and finish-forging counterdie, finish-forging counterdie internal vertical is provided with the first through hole for placing blank, first through hole comprises the conical section on top and the cylindrical section of bottom, the finish-forging push rod with this cylindrical section matched in clearance is provided with in the cylindrical section of the first through hole, finish-forging counterdie upper surface and the first through hole upper end and joint are provided with the first up big and down small tapering transition hole, finish-forging patrix lower surface is provided with pressure head and is positioned at the annular groove around pressure head, the corresponding material overflow cavity being provided with overlap gap and annular between finish-forging patrix and finish-forging counterdie, material overflow cavity is communicated with head finish-forging chamber by overlap gap.The utility model avoids the stress between blank bar portion and mould to concentrate, save Preform Die Master Cost, Mould Machining expense, shorten the mould production cycle, machined allowance is little, the labour intensity of the workman that also enhances productivity, reduces, reduction production cost.

Description

Transmission shaft fork axle finish-forging die
Technical field
The utility model belongs to vehicle transmission forging shaft production technical field, is specifically related to a kind of transmission shaft fork axle finish-forging die.
Background technology
At present, the joint fork shaft forging process surplus that conventional forging process is produced is large, energy consumption is high, production efficiency is low, and the conventional forging process of joint fork shaft is: blanking → overall Frequency Induction Heating → base → blocking → finish-forging → trimming.Draft angle >=2 ° of blank when forging after overall heating, cause allowance during machined large, and the energy consumption of overall heating is high, the forging technology design traditional due to joint fork shaft has blocking, the increase of pre-forging process, not only add mold materials expense, Mould Machining expense, also add the mould production cycle, only produce on one at mould and just significantly improve production cost, the increase of this work step reduces labor productivity in addition, increase man hour of labour, also virtually add work production cost.Not only add production cost in conventional forging process and also reduce production efficiency.
In a word, the defect of conventional forging process is:
1, production efficiency is low;
2, overall heating in medium frequency energy consumption is high;
3, forging process surplus is large;
4, on average the die cost of every forging is high.
Utility model content
The utility model, in order to solve weak point of the prior art, provides the transmission shaft fork axle finish-forging die that a kind of production efficiency is high, energy consumption is little, metalworking surplus is little, production cost is low.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: transmission shaft fork axle finish-forging die, comprise finish-forging patrix and finish-forging counterdie, finish-forging counterdie internal vertical is provided with the first through hole for placing blank, first through hole comprises the conical section on top and the cylindrical section of bottom, the big up and small down structure of conical section of the first through hole, the bus of the conical section of the first through hole and the angle of center line are 0.5 °, the conical section lower end of the first through hole is equal with the internal diameter of cylindrical section, the finish-forging push rod with this cylindrical section matched in clearance is provided with in the cylindrical section of the first through hole, finish-forging counterdie upper surface and the first through hole upper end and joint are provided with the first up big and down small tapering transition hole, finish-forging patrix lower surface is provided with pressure head and is positioned at the annular groove around pressure head, pressure head and annular groove are correspondingly encircled into head finish-forging chamber with the first tapering transition hole is upper and lower, the corresponding material overflow cavity being provided with overlap gap and annular between finish-forging patrix and finish-forging counterdie, material overflow cavity is communicated with head finish-forging chamber by overlap gap, the corner of finish-forging counterdie upper surface is provided with the locating notch of rectangle, and finish-forging patrix lower surface outer edge is provided with the positioning boss that can coordinate up and down with locating notch.
Adopt technique scheme, the utility model is requisite utensil in transmission shaft fork axle Forging Technology, and transmission shaft fork axle Forging Technology specifically comprises the following steps:
(1), blanking: adopt full-automatic numerical control sawing machine or numerical control cutting machine to be the blank of given size by round steel blanking;
(2), local Frequency Induction Heating: carry out Frequency Induction Heating to 1/3rd of each charge length, heating and temperature control is between 1100 ° ~ 1150 DEG C, and measurement and control of temperature adopts infrared thermometer;
(3), base: be put in the middle of the blanking mold on pressure machine by the blank after heating, the fire end of manipulation pressure machine to blank forges and presses, and takes out after head forging forming, and head flattens in track and field run-track shaped by manipulation pressure machine;
(4), finish-forging: blank is placed in the middle of the finish-forging die on finish-forging forcing press and forges and presses, become finish-forging part after forging and stamping;
(5), trimming: the overlap cutaway of finish-forging part is become forging products.
Described blanking mold comprises and is located at base patrix and base counterdie, base counterdie internal vertical is provided with the second through hole for placing blank, second through hole comprises the conical section on top and the cylindrical section of bottom, the big up and small down structure of conical section of the second through hole, the bus of the conical section of the second through hole and the angle of center line are 0.5 °, the conical section lower end of the second through hole is equal with the internal diameter of cylindrical section, the base push rod with this cylindrical section matched in clearance is provided with in the cylindrical section of the second through hole, base counterdie upper surface and the second through hole upper end and joint are provided with the second up big and down small tapering transition hole, base patrix lower surface is provided with the circular groove corresponding up and down with the second tapering transition hole, circular groove and the second tapering transition hole are encircled into blank head and forge and press chamber, base patrix lower surface side offers upper groove, base counterdie upper surface side is provided with the low groove be positioned at immediately below upper groove, upper groove and low groove are encircled into the forging and stamping space for flattening blank head, when base patrix contacts up and down with base counterdie, the height in forging and stamping space is less than the diameter of circular groove.
Described step (3) is specially: cylinder blank is put in the second through hole, blank upper end is heating part, blank lower end and base push rod upper-end contact, manipulation pressure machine, base patrix is moved down, downward pressed compact material upper end, circular groove bottom surface, head is forged and pressed chamber and is full of the head forming collar plate shape by blank deformation, base push rod moves up by the hydraulic pressure or the mechanical type liftout attachment that then manipulate pressure machine, blank ejects by base push rod, then the bar portion of blank is clamped with clamp, bar portion keeps level, head is placed on lower groove floor surfaces, manipulation pressure machine, base patrix is moved down, upper groove lower surface forging and stamping head, so just head is flattened in track and field run-track shaped.
Described step (4) is specially: be inserted in the first through hole by the bar portion of blank, the length direction of blank head and the length direction in head finish-forging chamber are consistent, manipulation finish-forging forcing press, finish-forging patrix is moved down, pressure head forges and presses blank head center downwards, material unnecessary for head is expanded towards periphery, until head finish-forging chamber is full of, and unnecessary material enters in material overflow cavity by overlap gap, stop forging operation, finish-forging push rod moves up by hydraulic pressure or the mechanical type liftout attachment of manipulation finish-forging forcing press, finish-forging part ejects by base push rod, finish-forging operation completes.
In transmission shaft fork axle Forging Technology, due to the bar portion head of joint fork shaft forging, so traditional overall Frequency Induction Heating to be made into local Frequency Induction Heating, forging position (distortion position) is not needed not heat, selecting during former material blanking makes former material diameter close to forging bar portion diameter, cylindrical only needs to stay 1 ~ 1.5mm allowance, due to the bar end surface marginal existence wedge angle of local heat forging, at this moment mold cavity bottom surface is needed also must to be made into wedge angle, mould has during wedge angle and there is the concentrated problem of stress, stress concentrates mould easy to crack, so should wedge angle be avoided when designing mould, of the present utility model second through hole and the first through hole are all designed to structure penetrating up and down, and the base push rod equal with forging lower surface external diameter is set at the cylindrical section of the second through hole, at the cylindrical section of the first through hole, the finish-forging push rod equal with forging lower surface external diameter is set, due to the not temperature distortion of bar subordinate end face, even if bar subordinate end face edge has wedge angle, also the problem that stress is concentrated can not be produced.
Transmission shaft fork axle Forging Technology is owing to eliminating existing blocking work step, base work step needs improvement could meet finish-forging one-shot forming, base work step makes first heading into, then by the mode of head flattening, so not only save Preform Die Master Cost, Mould Machining expense, shorten the mould production cycle, the labour intensity of the workman that also enhances productivity, reduces, reduction production cost.
Overall Frequency Induction Heating is made into local Frequency Induction Heating by transmission shaft fork axle Forging Technology compared with traditional technology, reduces energy consumption, and draft angle≤0.5 ° of the blank in addition after local heat when forging, machined allowance is little.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of finish-forging counterdie in Fig. 1;
Fig. 3 is the structural representation of blanking mold.
Detailed description of the invention
As depicted in figs. 1 and 2, transmission shaft fork axle finish-forging die of the present utility model, comprise finish-forging patrix 11 and finish-forging counterdie 12, finish-forging counterdie 12 internal vertical is provided with the first through hole 13 for placing blank, first through hole 13 comprises the conical section on top and the cylindrical section of bottom, the big up and small down structure of conical section of the first through hole 13, the bus of the conical section of the first through hole 13 and the included angle B of center line are 0.5 °, the conical section lower end of the first through hole 13 is equal with the internal diameter of cylindrical section, the finish-forging push rod 14 with this cylindrical section matched in clearance is provided with in the cylindrical section of the first through hole 13, finish-forging counterdie 12 upper surface and the first through hole 13 upper end and joint are provided with the first up big and down small tapering transition hole 15, finish-forging patrix 11 lower surface is provided with pressure head 16 and is positioned at the annular groove 17 around pressure head 16, pressure head 16 and annular groove 17 is corresponding with the first tapering transition hole about 15 is encircled into head finish-forging chamber, the corresponding material overflow cavity 18 being provided with overlap gap and annular between finish-forging patrix 11 and finish-forging counterdie 12, material overflow cavity 18 is communicated with head finish-forging chamber by overlap gap 19, the corner of finish-forging counterdie 12 upper surface is provided with the locating notch 20 of rectangle, and finish-forging patrix 11 lower surface outer edge is provided with the positioning boss 21 that can coordinate with locating notch about 20.
The utility model is requisite utensil in transmission shaft fork axle Forging Technology, and transmission shaft fork axle Forging Technology specifically comprises the following steps:
(1), blanking: adopt full-automatic numerical control sawing machine or numerical control cutting machine to be the blank of given size by round steel blanking;
(2), local Frequency Induction Heating: carry out Frequency Induction Heating to 1/3rd of each charge length, heating and temperature control is between 1100 ° ~ 1150 DEG C, and measurement and control of temperature adopts infrared thermometer;
(3), base: be put in the middle of the blanking mold on pressure machine by the blank after heating, the fire end of manipulation pressure machine to blank forges and presses, and takes out after head forging forming, and head flattens in track and field run-track shaped by manipulation pressure machine;
(4), finish-forging: blank is placed in the middle of the finish-forging die on finish-forging forcing press and forges and presses, become finish-forging part after forging and stamping;
(5), trimming: the overlap cutaway of finish-forging part is become forging products.
As shown in Figure 3, blanking mold comprises and is located at base patrix 1 and base counterdie 2, base counterdie 2 internal vertical is provided with the second through hole 3 for placing blank, second through hole 3 comprises the conical section on top and the cylindrical section of bottom, the big up and small down structure of conical section of the second through hole 3, the bus of the conical section of the second through hole 3 and the included angle A of center line are 0.5 °, the conical section lower end of the second through hole 3 is equal with the internal diameter of cylindrical section, the base push rod 4 with this cylindrical section matched in clearance is provided with in the cylindrical section of the second through hole 3, base counterdie 2 upper surface and the second through hole 3 upper end and joint are provided with the second up big and down small tapering transition hole 5, base patrix 1 lower surface is provided with the circular groove 6 corresponding with the second tapering transition hole about 5, circular groove 6 and the second tapering transition hole 5 are encircled into blank head and forge and press chamber, base patrix 1 lower surface side offers upper groove 7, base counterdie 2 upper surface side is provided with the low groove 8 be positioned at immediately below upper groove 7, upper groove 7 and low groove 8 are encircled into the forging and stamping space for flattening blank head, when base patrix 1 contacts with base counterdie about 2, the height in forging and stamping space is less than the diameter of circular groove 6.
Step (3) is specially: cylinder blank is put in the second through hole 3, blank upper end is heating part, blank lower end and base push rod 4 upper-end contact, manipulation pressure machine, base patrix 1 is moved down, downward pressed compact material upper end, circular groove 6 bottom surface, head is forged and pressed chamber and is full of the head forming collar plate shape by blank deformation, base push rod 4 moves up by the hydraulic pressure or the mechanical type liftout attachment that then manipulate pressure machine, blank ejects by base push rod 4, then the bar portion of blank is clamped with clamp, bar portion keeps level, head is placed on low groove 8 bottom surface, manipulation pressure machine, base patrix 1 is moved down, upper groove 7 lower surface forging and stamping head, so just head is flattened in track and field run-track shaped.
Step (4) is specially: be inserted in the bar portion of blank in the first through hole 13, the length direction of blank head and the length direction in head finish-forging chamber are consistent, manipulation finish-forging forcing press, finish-forging patrix 11 is moved down, pressure head 16 is forging and stamping blank head center downwards, material unnecessary for head is expanded towards periphery, until head finish-forging chamber is full of, and unnecessary material enters in material overflow cavity 18 by overlap gap 19, stop forging operation, finish-forging push rod 14 moves up by hydraulic pressure or the mechanical type liftout attachment of manipulation finish-forging forcing press, finish-forging part ejects by base push rod 4, finish-forging operation completes.
Transmission shaft fork axle Forging Technology is due to the bar portion head of joint fork shaft forging, so traditional overall Frequency Induction Heating to be made into local Frequency Induction Heating, forging position (distortion position) is not needed not heat, selecting during former material blanking makes former material diameter close to forging bar portion diameter, cylindrical only needs to stay 1 ~ 1.5mm allowance, due to the bar end surface marginal existence wedge angle of local heat forging, at this moment mold cavity bottom surface is needed also must to be made into wedge angle, mould has during wedge angle and there is the concentrated problem of stress, stress concentrates mould easy to crack, so should wedge angle be avoided when designing mould, of the present utility model second through hole 3 and the first through hole 13 are all designed to structure penetrating up and down, and the base push rod 4 equal with forging lower surface external diameter is set at the cylindrical section of the second through hole 3, at the cylindrical section of the first through hole 13, the finish-forging push rod 14 equal with forging lower surface external diameter is set, due to the not temperature distortion of bar subordinate end face, even if bar subordinate end face edge has wedge angle, also the problem that stress is concentrated can not be produced.
Transmission shaft fork axle Forging Technology is owing to eliminating existing blocking work step, base work step needs improvement could meet finish-forging one-shot forming, base work step makes first heading into, then by the mode of head flattening, so not only save Preform Die Master Cost, Mould Machining expense, shorten the mould production cycle, the labour intensity of the workman that also enhances productivity, reduces, reduction production cost.
Overall Frequency Induction Heating is made into local Frequency Induction Heating by transmission shaft fork axle Forging Technology compared with traditional technology, reduces energy consumption, and draft angle≤0.5 ° of the blank in addition after local heat when forging, machined allowance is little.
Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although be described in detail the utility model with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: still can modify to the utility model or equivalent replacement, and not departing from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of right of the present utility model.

Claims (1)

1. transmission shaft fork axle finish-forging die, it is characterized in that: comprise finish-forging patrix and finish-forging counterdie, finish-forging counterdie internal vertical is provided with the first through hole for placing blank, first through hole comprises the conical section on top and the cylindrical section of bottom, the big up and small down structure of conical section of the first through hole, the bus of the conical section of the first through hole and the angle of center line are 0.5 °, the conical section lower end of the first through hole is equal with the internal diameter of cylindrical section, the finish-forging push rod with this cylindrical section matched in clearance is provided with in the cylindrical section of the first through hole, finish-forging counterdie upper surface and the first through hole upper end and joint are provided with the first up big and down small tapering transition hole, finish-forging patrix lower surface is provided with pressure head and is positioned at the annular groove around pressure head, pressure head and annular groove are correspondingly encircled into head finish-forging chamber with the first tapering transition hole is upper and lower, the corresponding material overflow cavity being provided with overlap gap and annular between finish-forging patrix and finish-forging counterdie, material overflow cavity is communicated with head finish-forging chamber by overlap gap, the corner of finish-forging counterdie upper surface is provided with the locating notch of rectangle, and finish-forging patrix lower surface outer edge is provided with the positioning boss that can coordinate up and down with locating notch.
CN201420654606.2U 2014-11-05 2014-11-05 Transmission shaft fork axle finish-forging die Active CN204209052U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420654606.2U CN204209052U (en) 2014-11-05 2014-11-05 Transmission shaft fork axle finish-forging die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420654606.2U CN204209052U (en) 2014-11-05 2014-11-05 Transmission shaft fork axle finish-forging die

Publications (1)

Publication Number Publication Date
CN204209052U true CN204209052U (en) 2015-03-18

Family

ID=52977761

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420654606.2U Active CN204209052U (en) 2014-11-05 2014-11-05 Transmission shaft fork axle finish-forging die

Country Status (1)

Country Link
CN (1) CN204209052U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105834348A (en) * 2016-05-25 2016-08-10 中车戚墅堰机车车辆工艺研究所有限公司 Method for forging workblank of transmission disc of locomotive
CN106040944A (en) * 2016-08-05 2016-10-26 许昌中兴锻造有限公司 Light slip yoke forging die and combined forging process thereof
CN109093048A (en) * 2018-08-01 2018-12-28 西安三角防务股份有限公司 A kind of mainframe lock forging mold and forging method
CN112453310A (en) * 2020-10-30 2021-03-09 重庆传动轴股份有限公司 Forging process of energy-saving rear spline shaft

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105834348A (en) * 2016-05-25 2016-08-10 中车戚墅堰机车车辆工艺研究所有限公司 Method for forging workblank of transmission disc of locomotive
CN106040944A (en) * 2016-08-05 2016-10-26 许昌中兴锻造有限公司 Light slip yoke forging die and combined forging process thereof
CN109093048A (en) * 2018-08-01 2018-12-28 西安三角防务股份有限公司 A kind of mainframe lock forging mold and forging method
CN112453310A (en) * 2020-10-30 2021-03-09 重庆传动轴股份有限公司 Forging process of energy-saving rear spline shaft

Similar Documents

Publication Publication Date Title
CN104439027B (en) Transmission shaft fork axle new technique for forging
CN204209052U (en) Transmission shaft fork axle finish-forging die
CN104070129B (en) Hot extrusion forging die for pipe with flange and deep blind taper hole shaft and forging technology thereof
CN204276770U (en) Transmission shaft fork axle blanking mold
CN204308124U (en) For the assembling die of motor-car high gear ring blank forging
CN102172767B (en) Large roller or gear forge piece forming device and using method
CN204603178U (en) The open piston rod forging mold of a kind of operating cylinder
CN105081167A (en) Through hole forging forming method
CN204747242U (en) Rim becomes major part mould
CN202825949U (en) Press-fit double-punching die
CN208495682U (en) Valve body forging mold
CN203917768U (en) A kind of hot extrusion forging mold of flanged dark blind taper hole central siphon
CN208945082U (en) The flat cylinder bottom forging mold of coal mine hydraulic supporting jack
CN204135257U (en) A kind of mould of power forging automobile connecting bar
CN202825948U (en) Press-fit punching die
CN106334776B (en) For forging the device and forging method of hoist block bifurcation shape
CN204638892U (en) The drawing die of cylindrical shape sheet metal component
CN105234325A (en) Forging process for welding neck flange
CN203843079U (en) Porous blind one-step forming process and die
CN204545126U (en) A kind of large ring roughing punch-forming mold
CN204108015U (en) A kind of valve stem cold extrusion die
CN104646547B (en) Large-scale ring part rough machining stamping molding die
CN204657263U (en) The mould of a kind of automobile front axle uncovered U-shaped axle tube rack forming
CN203725684U (en) Blank manufacturing mould for molding driven gear
CN210676798U (en) Novel finish forging die for transmission shaft disc flange fork forging

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant