CN203265502U - Hot forging device for transmission shaft joint fork with horizontal fork part - Google Patents

Hot forging device for transmission shaft joint fork with horizontal fork part Download PDF

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Publication number
CN203265502U
CN203265502U CN 201320103372 CN201320103372U CN203265502U CN 203265502 U CN203265502 U CN 203265502U CN 201320103372 CN201320103372 CN 201320103372 CN 201320103372 U CN201320103372 U CN 201320103372U CN 203265502 U CN203265502 U CN 203265502U
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CN
China
Prior art keywords
die
forging
flat
finish
blank
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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.)
Expired - Fee Related
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CN 201320103372
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Chinese (zh)
Inventor
胡成亮
赵震
资小林
黄春
曾凡
吴公明
郭增均
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Shanghai Jiaotong University
Wanxiang Qianchao Co Ltd
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Shanghai Jiaotong University
Wanxiang Qianchao Co Ltd
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Priority to CN 201320103372 priority Critical patent/CN203265502U/en
Application granted granted Critical
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to a hot forging device for a transmission shaft joint fork with a horizontal fork part in the technical field of forging forming. The hot forging device comprises a flat die used for the flat die flattening of a blank, a bending die used for the pre-forging bending of the blank, and a final forging die used for the final forging forming of a pre-forging piece. The bending die comprises a convex die and a concave die which are arranged in an up and down matching manner, wherein a working part of the convex die is provided with an arc-shaped convex cross section, and a working part of the concave die is provided with a trapezoid groove of which the shape is matched with the shape of the bottom of the pre-forging piece. Compared with horizontal open type die forging, axial blind holes can be directly forged in the transmission shaft joint fork manufactured by the hot forging device, follow-up machining processes are omitted, the consumption of burr metal is small, and the utilization ratio of material is 85%. Compared with vertical hot extrusion forming, the process of the hot forging device is convenient to implement, and is stable; and the dies are relatively simple and are low in manufacturing cost.

Description

Forge hot device with transmission shaft fork of horizontal fork
Technical field
The utility model relates to a kind of device of forging and molding technical field, specifically a kind of forge hot device with transmission shaft fork of horizontal fork.
Background technology
Power transmission shaft fork-shaped spare is the key components and parts in vehicle transmission mechanism, need bear larger load in transmission process, and working condition is poor.Therefore, such part requires to possess higher intensity and excellent toughness.Adopt the manufacture method of machining, efficient is low and be difficult to satisfy its mechanical property requirements, generally adopts superior alloy steel to forge and forms.
Find through the retrieval to prior art, 06 phase in 2010 " forging technology " discloses " research of truck drive shaft Y-piece precision die forging process ", the open die forging, impressing forging technique of having put down in writing horizontal parting is usually used in producing propeller shaft yoke class part, its die forging operation is blanking, heating, flattening base, blocking split, finish-forging shaping, last trimming.But this technique can't forge axial blind hole, needs by follow-up machined, and material consumption is larger.Simultaneously, can form overlap between two forks, for distant horizontal fork-shaped between two forks, the overlap metal is more, often surpasses 30% of forging deadweight, causes stock utilization very low.
06 phase in 2004 " forging and pressing equipment and manufacturing technology " discloses " Precision Forming Process of Transmission Axle Forks research ", has put down in writing a kind of hot extrusion forming process of power transmission shaft fork-shaped spare, and its operation is: preform after a fire heating, the extruding essence is shaped, finishing.This technique has been extruded blind hole, has reduced overlap, thereby has improved stock utilization.But, this process using closed molds, extruding force is larger, mold materials is required high; Mould structure is complicated, and manufacturing cost is high; And needing the strict billet size of controlling, process implementing is not too convenient.
The utility model content
The utility model provides a kind of forge hot device with transmission shaft fork of horizontal fork for the prior art above shortcomings, and purpose is to realize to have the batch steady production of the transmission shaft fork forging of horizontal fork.
The utility model is achieved through the following technical solutions, the utility model relates to a kind of device for above-mentioned hot forging method, comprising: the flat-die that is used for blank claps flat flat-die, be used for blank the blocking bending bending mould and be used for the finish-forging die that the finish-forging of pre-forging is shaped.
Described flat-die comprises: connect successively cope match-plate pattern, upper mould fixed plate, upper padding plate, the patrix that arranges from top to bottom; And the counterdie that connect to arrange successively, be used for regulating lower bolster, counterdie fixed head and the lower bolster of die cavity die height from top to bottom.
The working portion of the upper die and lower die of described flat-die all has the horizontal cross-section.
Described bending mould comprises: the upper and lower punch that is equipped with and die, and wherein: the working portion of punch has circular arc evagination cross section, and the working portion of die has the trapezoidal type groove that the bottom shape with pre-forging is complementary.
The arc radius R in the evagination cross section of described punch is 80mm~100mm.
The die cavity gradient α of the trapezoidal type groove of described die is 7 °~9 °.
The both sides of described trapezoidal type groove are a symmetrical locating slot respectively, and the degree of depth of locating slot is 0.8mm~1.5mm, and the length of the pre-forging of width and formation is complementary.
The depth H of described trapezoidal type groove is than the dark 2.0mm~3.0mm of the cavity depth of finish-forging die.
Described finish-forging die is vertical mould-dividing mode, and the flash gutters of its impression distributes along profile, and forging shape and the size of impression shape and size and design in advance are complementary.
Height 2.0mm~the 4.0mm of described flash gutters.
Beneficial effect
Compare with horizontal open die forging, impressing forging, the transmission shaft fork middle part of the utility model preparation feature of indent vertically can directly be forged, and namely can directly forge axial blind hole, save follow-up machining processes, and flash metal consuming is little, and stock utilization reaches 85%.Compare with the Vertical Heat extrusion molding, the utility model process implementing is convenient, process stabilizing; Mould is relatively simple, and die manufacturing cost is low.
Description of drawings
Fig. 1 is blocking bending mould schematic diagram;
Fig. 2 is the punch of blocking bending mould;
Fig. 3 is the die of blocking bending mould;
Fig. 4 is the flat-die structural representation;
Fig. 5 is the punch of finish-forging die;
Fig. 6 is the die of finish-forging die.
The specific embodiment
The below elaborates to embodiment of the present utility model; the present embodiment is implemented under take technical solutions of the utility model as prerequisite; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
Embodiment 1
The present embodiment forge hot device comprises: the flat-die that is used for blank claps flat flat-die, be used for blank the blocking bending bending mould and be used for the finish-forging die that the finish-forging of pre-forging 1 is shaped.
Described flat-die comprises: working portion all has the upper die and lower die of horizontal cross-section.
As shown in Figure 1 to Figure 3, described bending mould comprises: the upper and lower punch that is equipped with 2 and die 3, wherein: the working portion of punch 2 has circular arc evagination cross section, and the working portion of die 3 has the trapezoidal type groove that the bottom shape with pre-forging 1 is complementary.
The arc radius R in the evagination cross section of described punch 2 is 80mm~100mm.
The die cavity gradient α of the trapezoidal type groove of described die 3 is 7 °~9 °.
The both sides of described trapezoidal type groove are a symmetrical locating slot respectively, and the degree of depth of locating slot is 0.8mm~1.5mm, and the length of the pre-forging 1 of width and formation is complementary.
The depth H of described trapezoidal type groove is than the dark 2.0mm~3.0mm of the cavity depth of finish-forging die.
As shown in Figure 4, described flat-die comprises: working portion all has the upper die and lower die of horizontal cross-section, wherein: set gradually from top to bottom in figure and be cope match-plate pattern 4, upper mould fixed plate 5, upper padding plate 6, patrix 7, counterdie 8, lower bolster 9, counterdie fixed head 10 and lower bolster 11.
As shown in Figure 5 and Figure 6, described finish-forging die is vertical mould-dividing mode, and the flash gutters of its impression distributes along profile, and forging shape and the size of impression shape and size and design in advance are complementary.
Height 2.0mm~the 4.0mm of described flash gutters.
This device realizes having the transmission shaft fork forge hot of horizontal fork in the following manner, and step order comprises: blanking, heating, twice flat-die clap flat, blocking is crooked, finish-forging is shaped and trimming, specifically comprise the following steps:
Step 1, blanking: adopt the round bar sawing, ratio of height to diameter of the ingot is not more than 1.5;
Step 2, preheated mold: Preform Die and finish-forging die to the blocking bending heat, and make mold temperature maintain 200 ° of C~300 ° C;
Step 3, heating blank: blank is placed in is heated to 1100 ° of C~1150 ° C in intermediate frequency furnace;
Step 4, twice flat-die are clapped flat: with the blank traverse, flat-die is clapped flat, then claps once flatly after half-twist again, and blank is clapped the strip shape, and THICKNESS CONTROL is at 50mm~55mm;
Step 5, blocking bending: the blank of elongate in shape is placed in the bending die with given shape, carries out bending and flatten, pre-forging end thickness is controlled at 34mm~38mm;
Step 6, finish-forging are shaped: pre-forging 1 is positioned in the die cavity of finish-forging die, carries out finish-forging and be shaped;
Step 7, trimming: the forging of step 6 gained is placed on edger, unnecessary overlap is cut, obtain final forging shape.
Embodiment 2
Certain model transmission shaft fork, material selection SAE1141 steel alloy, process equipment are the 40000kN hotdie forging press, its technical process is:
One, blanking: adopt acute material, the billet size Φ 70 * 134mm of downcutting of round bar;
Two, preheated mold: Preform Die and finish-forging die are heated, with mold heated to 220 ℃;
Three, heating blank: blank is placed in is heated to 1100 ℃ in intermediate frequency furnace;
Four, flat-die is clapped flat: with the blank traverse, flat-die is clapped for the first time flat, and by adjusting lower bolster 9 thickness, the control drafts is 20mm, and then after half-twist, the flat-die bat is once flat again, and blank is clapped the strip shape, claps flat rear its end thickness 50mm;
Five, blocking is crooked: the elongate in shape blank is placed in the bending die with given shape, carry out bending and flatten, the arc radius R of crooked punch 2 is 90mm, and the depth of cavity H of bending die 3 is 22mm, die cavity gradient α is 9 °, and after flattening, sotck thinkness is 34mm;
Six, finish-forging is shaped: pre-forging 1 vertical pendulum is put in the finish-forging die cavity, carries out finish-forging and be shaped, flash thickness 2.3mm;
Seven, trimming: finish-forging spare is placed in shaving die, carries out the punching trimming, obtain final forging.
The forging filling that the present embodiment obtains is full, and intensity is high, billet weight 4.04kg, and forging quality 3.43kg, stock utilization reaches 85%, has no crackle after magnetic powder inspection.
Embodiment 3
Certain model transmission shaft fork, material selection SAE1141 steel alloy, process equipment are the 40000kN hotdie forging press, its technical process is:
One, blanking: adopt acute material, the billet size Φ 70 * 134mm of downcutting of round bar;
Two, preheated mold: Preform Die and finish-forging die are heated, with mold heated to 250 ℃;
Three, heating blank: blank is placed in is heated to 1150 ℃ in intermediate frequency furnace;
Four, flat-die is clapped flat: with the blank traverse, flat-die is clapped for the first time flat, and by adjusting lower bolster 9 thickness, the control drafts is 15mm, and then after half-twist, the flat-die bat is once flat again, and blank is clapped the strip shape, claps flat rear its end thickness 55mm;
Five, blocking is crooked: the blank of elongate in shape is placed in the bending die with given shape, carry out bending and flatten, the arc radius R of crooked punch 2 is 90mm, and the depth of cavity H of bending die 3 is 25mm, die cavity gradient α is 9 °, and after flattening, sotck thinkness is 33mm;
Six, finish-forging is shaped: pre-forging 1 vertical pendulum is put in the finish-forging die cavity, carries out finish-forging and be shaped, flash thickness 2.8mm;
Seven, trimming: finish-forging spare is placed in shaving die, carries out the punching trimming, obtain final forging.
The forging filling that the present embodiment obtains is full, and intensity is high, billet weight 4.04kg, and forging quality 3.43kg, stock utilization reaches 85%, has no crackle after magnetic powder inspection.
Embodiment 4
Certain model transmission shaft fork, No. 45 steel of material selection, process equipment is the 40000kN hotdie forging press, its technical process is:
One, blanking: adopt acute material, the billet size Φ 70 * 134mm of downcutting of round bar;
Two, preheated mold: Preform Die and finish-forging die are heated, with mold heated to 250 ℃;
Three, heating blank: blank is placed in is heated to 1120 ℃ in intermediate frequency furnace;
Four, flat-die is clapped flat: with the blank traverse, flat-die is clapped for the first time flat, and by adjusting lower bolster 9 thickness, the control drafts is 20mm, and then after half-twist, the flat-die bat is once flat again, and blank is clapped the strip shape, claps flat rear its end thickness 50mm;
Five, blocking is crooked: the blank of elongate in shape is placed in the bending die with given shape, carry out bending and flatten, the arc radius R of crooked punch 2 is 90mm, and the depth of cavity H of bending die 3 is 25mm, die cavity gradient α is 8 °, and after flattening, sotck thinkness is 34mm;
Six, finish-forging is shaped: pre-forging 1 vertical pendulum is put in the finish-forging die cavity, carries out finish-forging and be shaped, flash thickness 3.0mm;
Seven, trimming: finish-forging spare is placed in shaving die, carries out the punching trimming, obtain final forging.
The forging filling that the present embodiment obtains is full, and intensity is high, billet weight 4.04kg, and forging quality 3.43kg, stock utilization reaches 85%, has no crackle after magnetic powder inspection.

Claims (10)

1. the forge hot device with transmission shaft fork of horizontal fork, is characterized in that, comprising: the flat-die that is used for blank claps flat flat-die, be used for blank the blocking bending bending mould and be used for the finish-forging die that the finish-forging of pre-forging is shaped.
2. device according to claim 1, is characterized in that, described flat-die comprises: connect successively cope match-plate pattern, upper mould fixed plate, upper padding plate, the patrix that arranges from top to bottom; And the counterdie that connect to arrange successively, be used for regulating lower bolster, counterdie fixed head and the lower bolster of die cavity die height from top to bottom.
3. device according to claim 2, is characterized in that, the working portion of the upper die and lower die of described flat-die all has the horizontal cross-section.
4. device according to claim 1, it is characterized in that, described bending mould comprises: the upper and lower punch that is equipped with and die, and wherein: the working portion of punch has circular arc evagination cross section, and the working portion of die has the trapezoidal type groove that the bottom shape with pre-forging is complementary.
5. device according to claim 4, is characterized in that, the arc radius R in the evagination cross section of described punch is 80mm~100mm.
6. device according to claim 4, is characterized in that, the die cavity gradient α of the trapezoidal type groove of described die is 7 °~9 °.
7. device according to claim 4, is characterized in that, the both sides of described trapezoidal type groove are a symmetrical locating slot respectively, and the degree of depth of locating slot is 0.8mm~1.5mm, and the length of the pre-forging of width and formation is complementary.
8. device according to claim 4, is characterized in that, the depth H of described trapezoidal type groove is than the dark 2.0mm~3.0mm of the cavity depth of finish-forging die.
9. device according to claim 1, is characterized in that, described finish-forging die is vertical mould-dividing mode, and the flash gutters of its impression distributes along profile.
10. device according to claim 9, is characterized in that, the height 2.0mm~4.0mm of described flash gutters.
CN 201320103372 2013-03-07 2013-03-07 Hot forging device for transmission shaft joint fork with horizontal fork part Expired - Fee Related CN203265502U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320103372 CN203265502U (en) 2013-03-07 2013-03-07 Hot forging device for transmission shaft joint fork with horizontal fork part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320103372 CN203265502U (en) 2013-03-07 2013-03-07 Hot forging device for transmission shaft joint fork with horizontal fork part

Publications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107635034A (en) * 2017-09-30 2018-01-26 广东欧珀移动通信有限公司 A kind of volcano mouthpiece preparation method, volcanic crater shell body and mobile terminal
CN109128000A (en) * 2018-09-13 2019-01-04 中冶重工(唐山)有限公司 Forging method with main flange valve body forging
CN109128001A (en) * 2018-08-11 2019-01-04 中冶重工(唐山)有限公司 The forging method of two sheet body ball valve body forging
CN111421762A (en) * 2019-12-31 2020-07-17 刘家叶 Mold convenient for height adjustment for automobile production and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107635034A (en) * 2017-09-30 2018-01-26 广东欧珀移动通信有限公司 A kind of volcano mouthpiece preparation method, volcanic crater shell body and mobile terminal
CN109128001A (en) * 2018-08-11 2019-01-04 中冶重工(唐山)有限公司 The forging method of two sheet body ball valve body forging
CN109128000A (en) * 2018-09-13 2019-01-04 中冶重工(唐山)有限公司 Forging method with main flange valve body forging
CN111421762A (en) * 2019-12-31 2020-07-17 刘家叶 Mold convenient for height adjustment for automobile production and preparation method thereof

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20131106

Termination date: 20190307