CN205289623U - Spline shaft plain forging mould - Google Patents

Spline shaft plain forging mould Download PDF

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Publication number
CN205289623U
CN205289623U CN201521059933.4U CN201521059933U CN205289623U CN 205289623 U CN205289623 U CN 205289623U CN 201521059933 U CN201521059933 U CN 201521059933U CN 205289623 U CN205289623 U CN 205289623U
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Prior art keywords
die
forging
finish
cavity
punch
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CN201521059933.4U
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Inventor
孟会涛
李广宇
胡卫华
安伟浩
陈喜乐
李士英
尚旭凯
田鹏
张恒
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Xuchang Yuandong Drive Shaft Co Ltd
Xuchang Zhongxing Forging Co Ltd
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Xuchang Yuandong Drive Shaft Co Ltd
Xuchang Zhongxing Forging Co Ltd
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Priority to CN201521059933.4U priority Critical patent/CN205289623U/en
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Abstract

Spline shaft plain forging mould, including the die body, dummying die and finish forging die, the die cavity of dummying die and finish forging die corresponds dummying terrace die and the finish forging terrace die that is equipped with connection power driving termination respectively, be equipped with two mounting grooves on the die body, dummying die body and finish forging die body assemble respectively in the mounting groove and respectively with die body fixed connection, the upper surface and the lower surface of die body all are equipped with the connection lug that the cross -section is the forked tail column structure, the structural shapes of dummying terrace die and finish forging terrace die is cylindrical, dummying die appearance and mounting groove are semicircular cylinder structure, the appearance and the mounting groove of finish forging die are the cuboid structure, dummying die and finish forging die all include die and lower die, the utility model relates to a rationally, simple structure, the forging easily takes shape, the rejection rate of forging is high, reduction in production cost and mould processing cost.

Description

Slip shaft yoke upset forging die has
Technical field
This utility model belongs to automobile industry technical field, is specifically related to a kind of slip shaft yoke upset forging die tool.
Background technology
At present, tradition horizontal forging and upsetting machine mould belongs to combination type, including upper and lower die body and upper and lower body of punch, punch holder, blocking punch and blocking die, finish-forging punch and finish-forging die, when processing upper and lower die body, using round bar overall processing, follow-up use line cuts into two symmetrical semi-cylindrical, but die body is when carrying out linear cutter up and down, there is bigger deviation, die body up and down after actual processing is asymmetric, the forging of production can be caused afterwards easily to bend, offset and the problem such as mismatch, and adding can machining percent defective;
It addition, the product variety of tradition horizontal forging and upsetting machine is splined shaft, splined shaft broadly falls into revolving body, and upper and lower die body die cavity is semi-cylindrical, and slip shaft yoke belongs to shaped piece, when using tradition upset forging die tool processes slip shaft yoke, there is problems in that
(1) on processing finish-forging during lower cavity die, first must process lower cavity die on finish-forging with cuboid mould, again lower cavity die on semi-finished product cuboid finish-forging is processed into semi-cylindrical, in the whole course of processing, on finish-forging, lower cavity die can produce the mismatch of about 1mm, using the product that on this finish-forging, lower cavity die forges out, percent defective is high;
(2) slip shaft yoke inner shape is not revolving body, on finish-forging, lower cavity die is abnormity, lower punch processing difficulties on finish-forging, existing upper lower punch mounting process makes lower punch on the finish-forging after installing can be rotated at random at axis direction, on finish-forging, lower punch coordinates installation big with lower cavity die on finish-forging, and production efficiency is low;
(3) be not locked on tradition upset forging die tool mechanism, and slip shaft yoke die can not align with mould datum level when mounted, therefore in forging process, it is impossible to effectively prevents product from offsetting, and forging percent defective is high;
(4) the flat upper and lower negative mold connected mode with upper and lower die body of forging of tradition is for be connected with bolt thread by screwed hole, under the repeatedly strike of equipment, and screwed hole and the yielding inefficacy of bolt, add the number of rewelding of connecting portion;
(5) tradition upset forging die tool is three stations, and the installing space by upper and lower die body is limited, and finish-forging die die cavity centrage is misaligned with the equipment centre of percussion, adds equipment bias hitting power, reduces the service life of upper and lower die body.
Utility model content
This utility model is in order to solve weak point of the prior art, it is provided that a kind of simple in construction, make simple and easy, be easily installed replacing and finished forged product rate high slip shaft yoke upset forging die tool.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that slip shaft yoke upset forging die has, including die body, blocking die and finish-forging die, the die cavity of blocking die and finish-forging die is correspondingly provided with the blocking punch connecting power drive end and finish-forging punch respectively, die body is provided with two mounting grooves, blocking die and finish-forging die are respectively assembled in mounting groove and fix with die body respectively and be connected, the upper and lower surface of die body is equipped with the connection projection that cross section is dovetail shaped structure, the planform of blocking punch and finish-forging punch is cylindrical, blocking die external form and mounting groove are half cylindrical structure, external form and the mounting groove of finish-forging die are rectangular structure, blocking die and finish-forging die all include upper cavity die and lower cavity die, upper cavity die and lower cavity die are corresponding up and down, slip shaft yoke die cavity it is correspondingly provided with between upper cavity die and lower cavity die, the all corresponding one end being positioned at a slip shaft yoke die cavity of blocking punch and finish-forging punch, the other end of two slip shaft yoke die cavities is equipped with the tong chops for clamping slip shaft yoke forging, upper cavity die and lower cavity die are connected each through hold-down mechanism and die body are fixing, length size respectively 410mm, 320mm, 120mm and 410mm, 320mm, 150mm of upper cavity die and lower cavity die,
With mounting groove lower surface for level reference, mounting groove sidepiece face is non-referenced face, the upper surface of upper cavity die is parallel with level reference, lower cavity die lower surface overlaps with level reference, it is equipped with the first screwed hole connected with mounting groove with right side on the left of die body, first screwed hole female thread is connected to top pressure bolt, and top pressure bolt is inner all pushes up press-fit with upper cavity die and lower cavity die lateral wall; Upper cavity die is provided with locating slot, and lower cavity die is provided with the locating piece being clasped with locating slot.
Between lower cavity die with die body, the fixing hold-down mechanism being connected includes the compression drift of big up and small down wedge structure, between lower cavity die one sidepiece and mounting groove one sidewall, there is wedge-shaped slot vertically, the wedge structure that the vertical cross-section of wedge-shaped slot is big up and small down, compress drift correspondence and be assemblied in wedge-shaped slot, compress drift, between lower cavity die and die body, correspondence offers through hole, being inserted with hold-down bolt in through hole, hold-down bolt lower end passes die body rear thread and is connected to locking nut.
Slip shaft yoke die cavity on finish-forging die includes fork die cavity and cylindrical stem die cavity, and the diameter of bar portion die cavity is 55mm.
Blocking punch and finish-forging punch all include jumper bar, connecting rod, contiguous block, connector, wedge, connecting plate and screw rod, connecting rod and contiguous block coaxially and are made into integration, the end center of contiguous block axially offers slot, the radial direction of contiguous block offers the jack connected with slot, connector is coaxial with jumper bar and is made into integration, the end center of connector offers the second screwed hole, connecting plate is provided with wedged hole, connecting plate is plugged in slot and wedged hole connection corresponding to jack, wedge coordinates with the wedged hole grafting of connecting plate radially across jack, the outer end of connecting plate is fixing with screw rod to be connected, screw flight is connected in the second screwed hole of connector, the working end of jumper bar is provided with flat punch, connecting rod be radially provided with locating slot.
Adopt technique scheme, the Forging Technology of slip shaft yoke, comprise the following steps:
(1) blanking: the diameter of blank is 55mm, material 40Cr, length 295mm;
(2) jumping-up: blank end is heated, heating-up temperature is 1150 DEG C, blank after heating is blank to be upsetting, afterwards blank to be upsetting is placed in the blocking concave die cavity of horizontal forging and upsetting machine upper spline yoke upset forging die tool, then power drive end drives blocking punch that blank to be upsetting is carried out jumping-up, and jumping-up forms pre-forging blank after completing;
(3) finish-forging: taking out in the finish-forging concave die cavity that pre-forging blank is placed into horizontal forging and upsetting machine upper spline yoke upset forging die tool, manipulate horizontal forging and upsetting machine, power drive end drives the finish-forging pre-forging blank of punch upsetting squeeze, upsetting squeeze forms finish-forging part after completing;
(4) trimming: finish-forging part is carried out trimming;
(5) ball blast: remove the oxide skin on finish-forging part surface.
This utility model has the advantages that the planform of blocking punch and finish-forging punch is cylinder, blocking die external form and mounting groove are half cylindrical structure, external form and the mounting groove of finish-forging die are rectangular structure, reducing installation difficulty, mould is processed and positions convenient, with mounting groove lower surface for level reference, mounting groove sidepiece face is non-referenced face, the upper surface of upper cavity die is parallel with level reference, lower cavity die lower surface and level reference fit tightly so that easier for installation, and push up pressure bolt the inner and all push up press-fit with upper cavity die and lower cavity die lateral wall, it is ensured that the concordance of forging quality, between lower cavity die with die body, the fixing hold-down mechanism being connected includes the compression drift of big up and small down wedge structure, between lower cavity die one sidepiece and mounting groove one sidewall, there is wedge-shaped slot vertically, the wedge structure that the vertical cross-section of wedge-shaped slot is big up and small down, compress drift correspondence and be assemblied in wedge-shaped slot, compress drift, between lower cavity die and die body, correspondence offers through hole, hold-down bolt it is inserted with in through hole, hold-down bolt lower end passes die body rear thread and is connected to locking nut, owing to compressing the wedge structure of drift, upper cavity die and lower cavity die is made more stably to be firmly fixed on die body, upper cavity die is provided with locating slot, and lower cavity die is provided with the locating piece being clasped with locating slot, can effectively prevent forging from offsetting, it is ensured that the concordance of forging quality.
In sum, this utility model is reasonable in design, simple in construction, and forging is readily formed, and the percent defective of forging is high, reduces production cost and mould processing cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view of the middle A-A of Fig. 1.
Detailed description of the invention
As shown in Figure 1-2, slip shaft yoke upset forging die of the present utility model has, including die body 1, blocking die and finish-forging die, the die cavity of blocking die and finish-forging die is correspondingly provided with the blocking punch connecting power drive end and finish-forging punch respectively, die body 1 is provided with two mounting grooves 2, blocking die and finish-forging die are respectively assembled in mounting groove 2 and fix with die body 1 respectively and be connected, the upper and lower surface of die body 1 is equipped with the connection projection 3 that the cross section corresponding with dovetail groove on flat swaging is dovetail shaped structure, the planform of blocking punch and finish-forging punch is cylindrical, blocking die external form and mounting groove are half cylindrical structure, external form and the mounting groove 2 of finish-forging die are rectangular structure, blocking die and finish-forging die all include upper cavity die and lower cavity die 5, upper cavity die and lower cavity die about 5 are corresponding, slip shaft yoke die cavity 6 it is correspondingly provided with between upper cavity die and lower cavity die 5, the all corresponding one end being positioned at a slip shaft yoke die cavity 6 of blocking body of punch and finish-forging body of punch, the other end of two slip shaft yoke die cavities 6 is equipped with the tong chops (not shown) for clamping slip shaft yoke forging, upper cavity die and lower cavity die 5 are connected each through hold-down mechanism is fixing with die body 1, the length of upper cavity die and lower cavity die 5, wide, high size respectively 410mm, 320mm, 120mm and 410mm, 320mm, 150mm,
With mounting groove 2 lower surface for level reference, mounting groove 2 sidepiece face is non-referenced face, the upper surface of upper cavity die is parallel with level reference, lower cavity die 5 lower surface overlaps with level reference, it is equipped with the first screwed hole 8 connected with mounting groove 2 with right side on the left of die body 1, first screwed hole 8 female thread is connected to top pressure bolt 9, and top pressure bolt 9 is inner all pushes up press-fit with upper cavity die and lower cavity die 5 lateral wall; Upper cavity die is provided with locating slot, and lower cavity die 5 is provided with the locating piece 11 being clasped with locating slot.
Between lower cavity die 5 with die body 1, the fixing hold-down mechanism being connected includes the compression drift 12 of big up and small down wedge structure, there is between lower cavity die 5 one sidepiece and mounting groove 2 one sidewall wedge-shaped slot 13 vertically, the wedge structure that the vertical cross-section of wedge-shaped slot 13 is big up and small down, compress drift 12 correspondence and be assemblied in wedge-shaped slot 13, compress drift 12, between lower cavity die 5 and die body 1, correspondence offers through hole 14, being inserted with hold-down bolt 15 in through hole 14, hold-down bolt 15 lower end passes die body 1 rear thread and is connected to locking nut.
Slip shaft yoke die cavity 6 on finish-forging die includes fork die cavity and cylindrical stem die cavity, and the diameter of bar portion die cavity is 55mm.
Blocking punch and finish-forging punch all include jumper bar 17, connecting rod 18, contiguous block 19, connector 20, wedge 21, connecting plate 22 and screw rod 23, connecting rod 18 and contiguous block 19 coaxially and are made into integration, the end center of contiguous block 19 axially offers slot 24, the radial direction of contiguous block 19 offers the jack 25 connected with slot 24, connector 20 is coaxial with jumper bar 17 and is made into integration, the end center of connector 20 offers the second screwed hole 26, connecting plate 22 is provided with wedged hole 27, connecting plate 22 is plugged in slot 24 and wedged hole 27 connection corresponding to jack 25, wedge 21 coordinates with wedged hole 27 grafting of connecting plate 22 radially across jack 25, the outer end of connecting plate 22 is fixing with screw rod 23 to be connected, screw rod 23 is threaded in the second screwed hole 26 of connector 20, the working end of jumper bar 17 is provided with flat punch 28, connecting rod 18 be radially provided with locating slot 29.
Adopt technique scheme, the Forging Technology of slip shaft yoke, comprise the following steps:
(1) blanking: the diameter of blank is 55mm, material 40Cr, length 295mm;
(2) jumping-up: blank end is heated, heating-up temperature is 1150 DEG C, blank after heating is blank to be upsetting, afterwards blank to be upsetting is placed in the blocking concave die cavity of horizontal forging and upsetting machine upper spline yoke upset forging die tool, then power drive end drives blocking punch that blank to be upsetting is carried out jumping-up, and jumping-up forms pre-forging blank after completing;
(3) finish-forging: taking out in the finish-forging concave die cavity that pre-forging blank is placed into horizontal forging and upsetting machine upper spline yoke upset forging die tool, manipulate horizontal forging and upsetting machine, power drive end drives the finish-forging pre-forging blank of punch upsetting squeeze, upsetting squeeze forms finish-forging part after completing;
(4) trimming: finish-forging part is carried out trimming;
(5) ball blast: remove the oxide skin on finish-forging part surface.
It is proven, compared with having with conventional spline yoke upset forging die, after using Novel spline shaft fork upset forging die tool:
1, mould bases working (machining) efficiency improves 10%;
2, equipment rebuilding number of times reduces once every year;
3, guiding accuracy is high, and punch caudal peduncle saves 5 every year;
4, owing to mould is easy for installation, production efficiency improves 5%.
Shape of the present utility model, material, structure etc. are not done any pro forma restriction by the present embodiment; every any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, belongs to the protection domain of technical solutions of the utility model.

Claims (4)

1. slip shaft yoke upset forging die tool, including die body, blocking die and finish-forging die, the die cavity of blocking die and finish-forging die is correspondingly provided with the blocking punch connecting power drive end and finish-forging punch respectively, die body is provided with two mounting grooves, blocking die and finish-forging die are respectively assembled in mounting groove and fix with die body respectively and be connected, it is characterized in that: the upper and lower surface of die body is equipped with the connection projection that cross section is dovetail shaped structure, the planform of blocking punch and finish-forging punch is cylindrical, blocking die external form and mounting groove are half cylindrical structure, external form and the mounting groove of finish-forging die are rectangular structure, blocking die and finish-forging die all include upper cavity die and lower cavity die, upper cavity die and lower cavity die are corresponding up and down, slip shaft yoke die cavity it is correspondingly provided with between upper cavity die and lower cavity die, the all corresponding one end being positioned at a slip shaft yoke die cavity of blocking punch and finish-forging punch, the other end of two slip shaft yoke die cavities is equipped with the tong chops for clamping slip shaft yoke forging, upper cavity die and lower cavity die are connected each through hold-down mechanism and die body are fixing, length size respectively 410mm, 320mm, 120mm and 410mm, 320mm, 150mm of upper cavity die and lower cavity die,
With mounting groove lower surface for level reference, mounting groove sidepiece face is non-referenced face, the upper surface of upper cavity die is parallel with level reference, lower cavity die lower surface overlaps with level reference, it is equipped with the first screwed hole connected with mounting groove with right side on the left of die body, first screwed hole female thread is connected to top pressure bolt, and top pressure bolt is inner all pushes up press-fit with upper cavity die and lower cavity die lateral wall; Upper cavity die is provided with locating slot, and lower cavity die is provided with the locating piece being clasped with locating slot.
2. slip shaft yoke upset forging die according to claim 1 tool, it is characterized in that: between lower cavity die with die body, the fixing hold-down mechanism being connected includes the compression drift of big up and small down wedge structure, between lower cavity die one sidepiece and mounting groove one sidewall, there is wedge-shaped slot vertically, the wedge structure that the vertical cross-section of wedge-shaped slot is big up and small down, compress drift correspondence and be assemblied in wedge-shaped slot, compress drift, between lower cavity die and die body, correspondence offers through hole, hold-down bolt it is inserted with in through hole, hold-down bolt lower end passes die body rear thread and is connected to locking nut.
3. slip shaft yoke upset forging die according to claim 2 tool, it is characterised in that: the slip shaft yoke die cavity on finish-forging die includes fork die cavity and cylindrical stem die cavity, and the diameter of bar portion die cavity is 55mm.
4. the slip shaft yoke upset forging die tool according to claim 1 or 2 or 3, it is characterized in that: blocking punch and finish-forging punch all include jumper bar, connecting rod, contiguous block, connector, wedge, connecting plate and screw rod, connecting rod and contiguous block coaxially and are made into integration, the end center of contiguous block axially offers slot, the radial direction of contiguous block offers the jack connected with slot, connector is coaxial with jumper bar and is made into integration, the end center of connector offers the second screwed hole, connecting plate is provided with wedged hole, connecting plate is plugged in slot and wedged hole connection corresponding to jack, wedge coordinates with the wedged hole grafting of connecting plate radially across jack, the outer end of connecting plate is fixing with screw rod to be connected, screw flight is connected in the second screwed hole of connector, the working end of jumper bar is provided with flat punch, connecting rod be radially provided with locating slot.
CN201521059933.4U 2015-12-19 2015-12-19 Spline shaft plain forging mould Active CN205289623U (en)

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CN201521059933.4U CN205289623U (en) 2015-12-19 2015-12-19 Spline shaft plain forging mould

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Application Number Priority Date Filing Date Title
CN201521059933.4U CN205289623U (en) 2015-12-19 2015-12-19 Spline shaft plain forging mould

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CN205289623U true CN205289623U (en) 2016-06-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111112540A (en) * 2019-11-20 2020-05-08 安徽中骄智能科技有限公司 Double-deck compound contact machine drift mounting structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111112540A (en) * 2019-11-20 2020-05-08 安徽中骄智能科技有限公司 Double-deck compound contact machine drift mounting structure

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