CN110052566A - Closed mould upsetting squeeze composite molding die - Google Patents
Closed mould upsetting squeeze composite molding die Download PDFInfo
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- CN110052566A CN110052566A CN201910387542.1A CN201910387542A CN110052566A CN 110052566 A CN110052566 A CN 110052566A CN 201910387542 A CN201910387542 A CN 201910387542A CN 110052566 A CN110052566 A CN 110052566A
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- upper mold
- upsetting squeeze
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- blank
- composite molding
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- 238000000465 moulding Methods 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 238000010079 rubber tapping Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 15
- 239000000047 product Substances 0.000 description 20
- 238000010586 diagram Methods 0.000 description 16
- 239000011265 semifinished product Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005242 forging Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009490 roller compaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000008485 antagonism Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of closed mould upsetting squeeze composite molding dies, one end of upper mold be equipped with for pressure ram be inserted into and with a part of matched first tapping hole to upsetting squeeze blank upsetting squeeze position, the other end of upper mold, which is equipped with, is used for the molding upper half forming cavity of upsetting squeeze, and upper half forming cavity is connected to the first tapping hole；The other end of lower die is equipped with cavity, which includes the first accommodating chamber and lower half forming cavity for accommodating the upper mold other end, and lower half forming cavity is corresponding with the upper half forming cavity, and the second accommodating chamber for accommodating the non-upsetting squeeze position of blank is additionally provided in lower die；The other end of pressure ram is extend into the first tapping hole of upper mold after passing through the second lifting assembly；One end of hydraulic package is connect with the second lifting assembly, and after the other end of upper mold cooperates in the first accommodating chamber, blank is formed by reverse extrusion power to upper mold when the pressure that the hydraulic package other end is applied to upper mold one end is greater than or equal to upsetting squeeze.The present invention has the advantages that upper mold is avoided to be displaced by the reverse extrusion power of blank.
Description
Technical field
The present invention relates to metal forging technical field of mold, are specifically related to a kind of closed mould upsetting squeeze composite molding die.
Background technique
Larger ratio of height to diameter bar upsetting squeeze base, is mainly used for the prefabricated blank of half axial workpiece.Usual larger ratio of height to diameter bar upsetting squeeze
Base uses heading technique, by the upper mold prod cast cylinder angle that gradually becomes larger, divides multistep to realize and reduces ratio of height to diameter, reaches upsetting squeeze, gathers
The effect of material, general entire shaping step are no less than 3 steps, and intermediate since molding time is long, blank is cooling, need to melt down heating,
While consuming the energy, blank itself generates oxide skin, while influencing product quality, causes low in economic efficiency, Er Qieru
Fruit handles the bad prod cast angle respectively walked, easily causes material stroke during molding to fold, leads to the report of final products
It is useless.
Existing upsetting squeeze blank-making technology first molds upper mold with lower die before upsetting squeeze, in order to avoid upsetting squeeze upper mold phase
Lower die will not be subjected to displacement, after upper mold and lower die molding, spring is set on upper frame, upper frame drive hydraulic device and
Formed punch is whole under the axial downward movement of upper die and lower die, upper mold formation is supported in one end of spring, with upper frame after
It is continuous to move down, contention effect power is applied to spring, so that spring be made to be compressed tightly against in upper mold.
For such mode, since upper frame makes upper die and lower die form closed mould by the active force of spring, however,
During actual upsetting squeeze, large-scale hydraulic device reaches the even upper kiloton of several hundred tons to the active force that blank generates, and both makes
It is small-sized hydraulic device, the active force generated in upsetting squeeze to blank also reaches several tons to tens tons, and therefore, blank is set by hydraulic
The standby above-mentioned upsetting squeeze active force generated, blank deformation make upper mold will receive reversed squeezing action power, which is transmitted to
On spring, it is clear that unbearable tens tons of the spring oppositions to the even upper kiloton of tons up to a hundred cause in upper mold and lower die
Between generate gap, cause the closure of upper mold and lower die to fail, a part of blank Extrusion Forging Deformation enter upper mold and lower die it
Between gap in, so that blank be caused to generate overlap in upsetting squeeze, even scrap blank when serious.
Summary of the invention
The present invention provides a kind of closed mould upsetting for avoiding upper mold to be displaced during upsetting squeeze by the reverse extrusion power of blank
Squeeze composite molding die.
The technical solution for solving above-mentioned technical problem is as follows:
Closed mould upsetting squeeze composite molding die, comprising:
First lifting assembly；
Pressure ram, one end of the pressure ram are connect with the first lifting assembly；
Upper mold, one end of upper mold be equipped be inserted into for pressure ram and with a part of matched the to upsetting squeeze blank upsetting squeeze position
One tapping hole, the other end of upper mold, which is equipped with, is used for the molding upper half forming cavity of upsetting squeeze, and upper half forming cavity is connected to the first tapping hole；
Lower template component；
The lower die that one end and lower template component are fixed, the other end of lower die are equipped with cavity, which includes for accommodating
The first accommodating chamber and lower half forming cavity of the mould other end, lower half forming cavity is corresponding with the upper half forming cavity, also sets in lower die
There is the second accommodating chamber for accommodating the non-upsetting squeeze position of blank, the second accommodating chamber is connected to lower half forming cavity；
Second lifting assembly, the other end of pressure ram extend into the first tapping hole of upper mold after the second lifting assembly
In；
Hydraulic package, one end of the hydraulic package are connect with the second lifting assembly, and the other end cooperation of upper mold is held first
After receiving in chamber, blank is formed by upper mold when the pressure that the hydraulic package other end is applied to upper mold one end is greater than or equal to upsetting squeeze
Reverse extrusion power.
Advantages of the present invention are as follows: the active force that hydraulic package generates when working, blank is to upper mold institute when for fighting upsetting squeeze
The reverse extrusion power of formation, since the active force that hydraulic package generates is greater than the reverse extrusion power, pass through hydraulic group
Part can make the molding of upper mold and lower die firm, will not because of blank by upsetting squeeze when generate reversely press to active force and make upper mold
It moves up, avoids and generate gap between upper mold and lower die, to fundamentally prevent blank upsetting squeeze in the prior art
A part of deformation enters the situation between upper mold and lower die in gap, therefore, passes through the second lifting assembly of setting and liquid
Component is pressed, the structure of axial force is generated to upper mold, it is therefore prevented that blank generates overlap in upsetting squeeze, and blank is even made when serious
The case where scrapping.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of the grinding forming technique of automobile axle shaft of the present invention；
Fig. 2 is the schematic diagram cooperated in upper mold and lower die in Fig. 1；
Fig. 3 is the schematic diagram of the mandril in the present invention；
Fig. 4 is the structural schematic diagram of the second embodiment of closed mould upsetting squeeze composite molding die of the present invention；
Fig. 5 is the schematic diagram of the section structure of the lower die in Fig. 4；
Fig. 6 is the assembling schematic diagram of the second lifting assembly and hydraulic package shown in Fig. 4；
Fig. 7 is the schematic diagram of the first mounting base shown in Fig. 4；
Fig. 8 is the schematic diagram of the hollow shaft body in Fig. 4；
Fig. 9 is the schematic diagram of the blank in the present invention；
Figure 10 is schematic diagram when pressure ram starts to blank progress upsetting squeeze in the present invention；
Figure 11 is pressure ram in the present invention to the schematic diagram for obtaining semi-finished product base after blank upsetting squeeze；
Figure 12 starts to carry out schematic diagram when upsetting squeeze for the second upper mold in the present invention to semi-finished product base；
Figure 13 is the second upper mold in the present invention to the schematic diagram for obtaining finished product base after semi-finished product base upsetting squeeze；
Figure 14 is the schematic diagram of the finished product base in the present invention；
Figure 15 is in the present invention by the schematic diagram of the first upper mold of finished product base roller-compaction and the first lower die；
Figure 16 is the schematic diagram that finished product base roller-compaction is automobile axle shaft by the first upper mold and the first lower die；
A is blank, and B is semi-finished product base, and C is finished product base, and D is automobile axle shaft；
1 is cope plate, and 2 be pressure ram, and 3 be upper mold, and 3a is the first tapping hole, and 3b is upper half forming cavity, and 4 be lower die, 4a
For the first accommodating chamber, 4b is lower half forming cavity, and 4c is the second accommodating chamber, and recessing groove 4d, card slot 4e, 5 be mandril, and 5a is carrying
Portion, 5b are radial protrusion portion, and 5c is interconnecting piece, and 6 be lower template, and 6a is through-hole, and 7 be fixed plate, and 8 be the first mounting base, and 8a is
First through hole, 9 be lift actuator, and 10 be hydraulic package, and 11 be transmission mechanism, and 12 be bracket, and 13 be the first driving part, 14
It is support member for the second driving part, 15,16 be hollow shaft body, and 17 be the first radial flange, 18 be the second radial flange,
19 be the first plane bearing, and 20 be the second plane bearing, and 21 be 3rd bearing.
30 be the second upper mold；
40 be the first lower die, and 41 be the first lower impressions, and 42 be the first upper mold, and 43 be the first upper impression, and 44 be resigning cavity.
Specific embodiment
As shown in Figure 1, closed mould upsetting squeeze composite molding die of the invention, including the first lifting assembly, pressure ram, on
Mould, lower template component, lower die, the second lifting assembly, hydraulic package, the relationship to every part and between them carries out detailed below
It describes in detail bright:
As depicted in figs. 1 and 2, the first lifting assembly includes the lifting driving dress that cope plate 1 and driving cope plate 1 are gone up and down
(not shown) is set, the first lifting assembly can carry out horizontal movement and elevating movement, and lifting drive is mounted on water
On the mounting plate of flat movement, mounting plate is slidably matched on the rack, and mounting plate is connect with horizontal drive apparatus, horizontal drive apparatus
Drive installation plate horizontal movement, to make a long lifting assembly horizontal movement, when horizontal movement is to the position needed, lifting is driven
Device drives cope plate 1 to carry out elevating movement.
As depicted in figs. 1 and 2, one end of pressure ram 2 is connect with the first lifting assembly, one end of stripper plate 2 with first liter
The cope plate 1 come down to a lower group in part is fixedly connected, and the other end of pressure ram 2 is extend into upper mold under the driving of lifting drive,
To carry out upsetting squeeze to blank A of the cooperation in upper mold 3 and lower die.
As depicted in figs. 1 and 2, one end of upper mold 3 be equipped with for pressure ram 2 be inserted into and with to upsetting squeeze blank A upsetting squeeze position
A part of matched first tapping hole 3a, the other end of upper mold 3, which is equipped with, is used for the molding upper half forming cavity 3b of upsetting squeeze, upper half-formed
Chamber 3b is connected to the first tapping hole 3a, the cavity that the first tapping hole 3a and upper half forming cavity 3b are formed along upper mold 3 axial direction
In the upper mold 3, the present embodiment, the size of the section of upper half forming cavity 3b from top to bottom gradually becomes larger, upper half forming cavity 3b
Shape it is tapered.
As depicted in figs. 1 and 2, one end of lower die 4 is fixed with lower template component, and the other end of lower die 4 is equipped with cavity, the chamber
On body includes the first accommodating chamber 4a for accommodating 3 other end of upper mold and lower half forming cavity 4b, lower half forming cavity 4b and is described
Half-formed chamber 3b is corresponding, after the other end of upper mold 3 enters in the first accommodating chamber 4a, make lower half forming cavity 4b with it is upper half-formed
When chamber 3b is closed into a complete upsetting squeeze molding cavity, the height of upsetting squeeze molding cavity and the diameter ratio of blank A are excellent less than 2.5
Selection of land, the height of upsetting squeeze molding cavity is 2.3 with the diameter ratio of blank A, in this way, being in stably and controllable always in upsetting squeeze forming process
State, the step of can be reduced upsetting squeeze to realize that ratio of height to diameter is 3 to 12 blank jumping-up base, while at base be not in fold,
The defects of eccentric.
As depicted in figs. 1 and 2, the second accommodating chamber 4c for accommodating the non-upsetting squeeze position blank A is additionally provided in lower die 4, the
Two accommodating chamber 4c are connected to lower half forming cavity 4b, what the first accommodating chamber 4a, lower half forming cavity 4b and the second accommodating chamber 4c were formed
Cavity along lower die 4 the lower die 4 that axially penetrates through, in the present embodiment, the length in the section of lower half forming cavity 4b from top to bottom by
Step becomes smaller, and the shape of lower half forming cavity 4b is tapered.The purpose that the second accommodating chamber 4c is arranged in lower die 4 is pacified in lower die 4
Mandril 5 is filled, in order to which blank A is ejected after upsetting squeeze molding by mandril 5.
Lower template component includes lower template 6, fixed plate 7, and fixed plate 7 is fixed in lower template 6, and the other end of lower die 4
It is then fixed in fixed plate 7, lower template 6 is equipped with through-hole 6a, and the axial direction of through-hole 6a and the axial direction of the second accommodating chamber 4c are located at
On same straight line, consequently facilitating ejection driving device (not shown) is attached with mandril 5, in order to carry out mandril 5
Work.
As shown in figures 1 and 3, in the present embodiment, structure type that mandril 5 preferably uses are as follows: including supporting part 5a, radial direction
Lug boss 5b and interconnecting piece 5c, the cavity formed due to the first accommodating chamber 4a, lower half forming cavity 4b and the second accommodating chamber 4c
The lower die 4 is axially penetrated through along lower die 4, therefore, after the non-upsetting squeeze position of blank A can enter in the second accommodating chamber 4c, this
When, supporting part 5a carries the non-upsetting squeeze position of blank A, and radial protrusion portion 5b is protruded from the circumferential surface of supporting part 5a, therefore, radial
The outer diameter of lug boss 5b is greater than the outer diameter of supporting part 5a, thus, radial protrusion portion 5b is supported with the formation of lower template 6, so that radial
The position of lug boss 5b or more is supported.The diameter of interconnecting piece 5c is less than the aperture of through-hole 6a, and interconnecting piece 5c can be protruded into or be worn
Through-hole 6a is crossed to connect with ejection driving device.
As depicted in figs. 1 and 2, the other end of pressure ram 2 extend into the first blowing of upper mold 3 after the second lifting assembly
In the 3a of hole, in the present embodiment, structure that the second lifting assembly preferentially uses is including the first mounting base 8 and lift actuator
9,8 liters of devices of the first mounting base are driven by lift actuator 9, are provided with first through hole 8a, first through hole 8a in the first mounting base 8
It is passed through for the other end of pressure ram 2.Lift actuator 9 is linear actuator, which preferentially uses hydraulic cylinder.
As depicted in figs. 1 and 2, one end of hydraulic package 10 is connect with the second lifting assembly, and the other end cooperation of upper mold 3 exists
After in first accommodating chamber 4a, A pairs of blank when the pressure that 10 other end of hydraulic package is applied to 3 one end of upper mold is greater than or equal to upsetting squeeze
Upper mold 3 is formed by reverse extrusion power.One end of hydraulic package 10 is connected in the first mounting base 8, hydraulic package preferentially with it is upper
One end of mould 3 connects, in this way, upper mold and hydraulic package 10 and the second lifting assembly group are integral, when the second lifting assembly liter
When drop, upper mold 3 is also gone up and down therewith.The active force that hydraulic package 10 generates when working, blank A is to upper mold 3 when for fighting upsetting squeeze
It is formed by reverse extrusion power, since the active force that hydraulic package 10 generates is greater than the reverse extrusion power, pass through liquid
Pressure component 10 can make the molding of upper mold 3 and lower die 4 firm, will not because of blank A by upsetting squeeze when generate reversely press to effect
Power and move up upper mold 3, avoid and generate gap between upper mold 3 and lower die 4, to fundamentally prevent existing skill
A part of blank A Extrusion Forging Deformation enters the situation between upper mold 3 and lower die 4 in gap in art, therefore, passes through setting second
Lifting assembly and hydraulic package 10 generate the structure of axial force to upper mold 3, it is therefore prevented that blank is generated in upsetting squeeze to fly
Side, even the case where scrapping blank when serious.
As shown in Fig. 4 to Fig. 8, the present embodiment and above-mentioned first embodiment difference are as follows:
The circumferential surface of the lower die 4 is equipped with the groove body penetrated into the first accommodating chamber 4a, and groove body includes along 4 axis of lower die
Recessing groove 4d to the extension and card slot 4e along lower die circumferentially extending.The outer peripheral surface of the upper mold 3 is equipped with lug boss and (does not show
Out), when one end of upper mold 3 declines and cooperates in the first accommodating chamber 4a, lug boss passes through the recessing groove 4d, in rotation
Mould 3 makes the lug boss and the card slot 4e form clearance fit.When upsetting squeeze, blank A is formed by reverse extrusion to upper mold 3
When power, due to the lug boss and card slot 4e clearance fit in upper mold 3, upper mold 3 and lower die 4 form one, lug boss and card
The antagonism that the cooperation of slot 4e forms the reverse extrusion active force, so that upper mold 3 be avoided to move up.It is further in this way
Ground, which avoids, forms the gap between upper mold 3 and lower die 4.
As shown in Fig. 4 to Fig. 5, due to needing to make upper mold 3 to rotate, it can just make the cooperation of above-mentioned lug boss Yu card slot 4e, because
This is provided with driver in the present embodiment, and driver and upper mold cooperate, and driver drives upper mold 3 to rotate, and passes through driver
The driving rotation of upper mold 3 snaps onto the lug boss in the card slot 4e.
As shown in figure 4, the driver includes the transmission mechanism 11 cooperated with upper mold 3, bracket 12, the first driving part
13, transmission mechanism 13 is installed in rotation on one end of bracket 12, and the other end of bracket 12 is arranged on lower template component, and first
Driving part 13 is mounted on bracket 12, and the output end of the first driving part 13 is connect with transmission mechanism 11.
As shown in figure 4, transmission mechanism 11 can use friction roller or gear, transmission mechanism 11 preferentially uses friction roller.
First driving part 13 can use motor or hydraulic motor, and the first driving part 13 preferentially uses motor.The circumferential surface of friction roller
After the circumferential surface cooperation of upper mold 3, the rotation of motor driven friction roller, friction roller rotates upper mold 3 by friction force, to make
Lug boss in upper mold 3 snaps onto the card slot 4e.The cooperation that lug boss snaps onto the card slot 4e is released, only needs motor anti-
Turn driving friction roller reversion.
As shown in figure 4, the driver further includes the second driving part 14, the second driving part 14 is linear drives portion
Part, the second driving part 14 can preferentially be adopted in the present embodiment using hydraulic cylinder, cylinder, the motor for being connected with screw body etc.
Use hydraulic cylinder.The other end and lower template component slippage of bracket 12 cooperate, and the second driving part 14 is connect with bracket 12, and second drives
14 driving arm 12 of dynamic component linear motion makes transmission mechanism 11 cooperate or separate with upper mold 3.
As shown in figure 4, the section of the bracket 12 is L-shaped, the driver further includes support member 15, support member 15
One end be fixedly connected with lower template component, the other end and the bracket 12 of support member 15 are slidably matched, 15 pairs of branch of support member
Frame 12 forms support, and bracket 12 is again removable with respect to support member 15.
As shown in figure 4, since driver driving upper mold 3 rotates, and upper mold 3 is connect with hydraulic package 10, and therefore, hydraulic group
The assembly method of part 10 need to be different from above embodiment, specific as follows:
As shown in Fig. 4 to Fig. 8, the second lifting assembly includes the first mounting base 8, the first hollow shaft, bearing assembly, the first peace
It fills seat 8 and is equipped with first through hole 8a, the first bearing assembly is mounted in the first mounting base 8, and one end of the first hollow shaft passes through the
First through hole 8a in one mounting base 8, and the first hollow shaft is cooperated by bearing assembly, the hydraulic package and the first hollow shaft
Connection.
As shown in Fig. 4 to Fig. 8, first hollow shaft includes: hollow shaft body 16, the first radial flange 17, the second diameter
To flange 18, one end of hollow shaft body 16, the hydraulic package 10 and the first radial flange is arranged in the first radial flange 17
17 connections, the limitation hollow shaft ontology axial displacement of the second radial flange 18, second radial flange 18 are arranged in hollow shaft sheet
One end of the other end of body 16, the second radial flange 18 and the first mounting base 8 or the bearing group being mounted in the first mounting base 8
Part formation is supported.First radial flange 17 and one end of hollow shaft body 16 are integrally formed, the second radial flange 18 and hollow shaft
The other end of ontology 16 is by being welded and fixed or the first radial flange 17 and one end of hollow shaft body 16 are welded and fixed, and the
Two radial flanges 18 and the other end of hollow shaft body 16 are integrally formed.
As shown in Fig. 4 to Fig. 8, for the frame mode of the first hollow shaft and the first bearing assembly and the first mounting base 8
It may is that first bearing assembly includes the first plane bearing 19, the first through hole 8a in first mounting base 8 is step
Hole, the first plane bearing 19 are mounted in the large diameter hole of stepped hole, and second radial flange 18 and the first plane bearing 19 connect
It is formed and is supported after connecing.
As shown in Fig. 4 to Fig. 8, for the frame mode of the first hollow shaft and the first bearing assembly and the first mounting base 8
Be also possible to: the first bearing assembly includes the second plane bearing 20,3rd bearing 21, and first in first mounting base 8 is logical
Hole 8a is stepped hole, and the second plane bearing 20 is mounted in the large diameter hole of stepped hole, and the second plane bearing 20 then with the second diameter
It is formed and is supported after being connected to flange 18,3rd bearing 21 is mounted in the diameter holes of stepped hole, 3rd bearing and hollow shaft body
16 cooperations.And the first radial flange 17 is then supported with the first mounting base 8.
As shown in Fig. 4 to Fig. 8, for the frame mode of the first hollow shaft and the first bearing assembly and the first mounting base 8
It may also is that the first bearing assembly includes the first plane bearing 19, the second plane bearing 20,3rd bearing 21, first peace
Filling the first through hole 8a on seat 8 is the stepped hole that diameter both ends are big and centre is small, the first plane bearing 19 and the second plane bearing
20 are separately mounted in the large diameter hole of stepped hole, and 3rd bearing 21 is mounted in the diameter holes of stepped hole.Second radial convex
Edge 18 is formed after connecting with the first plane bearing 19 and is supported, and the second bearing 20 is formed after connecting with the first radial flange 17 and supported
Top.
A kind of grinding forming technique of automobile axle shaft, with above-mentioned closed mould upsetting squeeze composite molding die shown in FIG. 1 to institute
Blank-making technology is stated to be illustrated, the specific process steps are as follows:
Blanking: as shown in figure 9, the blank that ratio of height to diameter is 3 to 12 is made first, with finished product base gauge diameter when specific implementation
Based on product weight, the length for calculating blanking needs carries out blanking, obtains blank A；
Local heating: being heated using Extrusion Forging Deformation section of the intermediate frequency furnace to blank A, non-upsetting squeeze of the intermediate frequency furnace to blank A
Section is without heating, and heating and temperature control is at 1100-1200 DEG C；
Closed mould upsetting squeeze composite molding: as shown in Figure 10, after blank A is put into closed mould upsetting squeeze composite molding, make
Closed mould upsetting squeeze composite molding die closure, formation near closed hollow ring, closed mould upsetting squeeze composite molding die work upsetting squeeze blank A,
As shown in Figure 11 of Fig. 1, hydraulic package drives the decline of the first mounting base 8, makes lift actuator 9 and connects with lift actuator 9
The upper mold 3 connect declines, and after upper mold 3 and the molding of lower die 4, makes upper mold 3 keep supporting with lower die 4 by the active force of lift actuator 9
Top avoids the reaction force that suffered blank A is deformed in upsetting squeeze between upper mold 3 and lower die and generates gap.Upper mold 3 and lower die 4
After holding is supported, the decline of cope plate 1 makes pressure ram 2 form upsetting squeeze effect to blank A.As shown in figure 12, blank A is in closed mould upsetting
Upsetting squeeze is combined into semi-finished product base B under the action of squeezing composite molding die；The ratio of height to diameter of blank A is 3 to 12；After upper and lower mould molding,
Under mold cavity constraint, the control of Extrusion Forging Deformation section ratio of height to diameter is being not more than 2.5.
Jumping-up molding: as shown in figure 13, by closed mould upsetting squeeze composite molding die a part shift, i.e., by cope plate 1,
Pressure ram 2, upper mold 3 etc. are removed, and lower die 4 and semi-finished product base B are remained in the cavity of lower die 4, right using the second upper mold 30
The obtained semi-finished product base B of step 3 carries out upsetting squeeze, obtains finished product base C (as shown in figure 14)；It should during upsetting squeeze semi-finished product base B
Semi-finished product base B deformed area ratio of height to diameter is not more than 2.5.
Roller-compaction: as shown in Figure 15 and Figure 16, finished product base B being placed in the first lower impressions 41 of the first lower die 40,
First lower die 40 is rotated around own axes and finished product base B is driven to rotate together, and the revolving speed of the first lower die 40 is 20-70r/
Min, after stabilization of speed (for example, the revolving speed that the first lower die is set is 50r/min, but due to being unable to reach the speed when starting,
Can be only achieved the speed of 50r/min, as stable revolving speed after starting a period of time), exercise under the first upper mold 42 this first
After first upper impression 43 of upper mold 42 is supported with finished product base B axle to a part of end face, the first upper mold 42 presses finished product base B
System, the speed that the first upper mold suppresses finished product base are 1-10mm/s.First upper impression 43 and finished product base B axle are to end face
A part support after, the first upper mold 42 does passive rotation around own axes, and the first upper mold 42 rolls finished product base, fills finished product base
Automobile axle shaft D is obtained after the type chamber of full first upper mold and the first lower die.Finally the axial end face of the automobile axle shaft D of acquisition is carried out
Shaping.The axial direction of first upper mold 42 and the angle for being axially formed 4 ° to 8 ° of finished product base C.First upper mold 42 is equipped on first
The resigning cavity 44 stepped down is formed when type chamber 43 suppresses finished product base C.
Claims (10)
1. closed mould upsetting squeeze composite molding die characterized by comprising
First lifting assembly；
Pressure ram, one end of the pressure ram are connect with the first lifting assembly；
Upper mold, one end of upper mold, which is equipped with, is inserted into for pressure ram and puts with a part of matched first to upsetting squeeze blank upsetting squeeze position
Expect hole, the other end of upper mold, which is equipped with, is used for the molding upper half forming cavity of upsetting squeeze, and upper half forming cavity is connected to the first tapping hole；
Lower template component；
The other end of the lower die that one end and lower template component are fixed, lower die is equipped with cavity, which includes another for accommodating upper mold
First accommodating chamber and lower half forming cavity of one end, lower half forming cavity is corresponding with the upper half forming cavity, and use is additionally provided in lower die
In the second accommodating chamber for accommodating the non-upsetting squeeze position of blank, the second accommodating chamber is connected to lower half forming cavity；
Second lifting assembly, the other end of pressure ram are extend into the first tapping hole of upper mold after passing through the second lifting assembly；
Hydraulic package, one end of the hydraulic package are connect with the second lifting assembly, and the other end of upper mold cooperates in the first accommodating chamber
In after, the hydraulic package other end be applied to upper mold one end pressure be greater than or equal to upsetting squeeze when blank upper mold is formed by reversely
Extruding force.
2. closed mould upsetting squeeze composite molding die according to claim 1, which is characterized in that set on the circumferential surface of the lower die
There is the groove body penetrated into first accommodating chamber, groove body includes circumferentially prolonging along the axially extending recessing groove of lower die and along lower die
The card slot stretched；
The outer peripheral surface of the upper mold is equipped with lug boss, convex when one end of upper mold declines and cooperates in first accommodating chamber
The recessing groove is passed through in the portion of rising, and rotation upper mold makes the lug boss and the card slot form clearance fit.
3. closed mould upsetting squeeze composite molding die according to claim 2, which is characterized in that the hydraulic package and upper mold
Connection；
The lug boss is set to snap onto the driver in the card slot when further including driving upper mold rotation, driver is matched with upper mold
It closes, driver drives upper mold rotation.
4. according to claim 1 to closed mould upsetting squeeze composite molding die described in one of 3, which is characterized in that the second lifting group
Part includes the first mounting base, the first hollow shaft, bearing assembly, and the first mounting base is equipped with first through hole, the first bearing assembly peace
In the first mounting base, one end of the first hollow shaft passes through the first through hole in the first mounting base, and the first hollow shaft passes through
Bearing assembly cooperation, the hydraulic package and the first hollow axis connection.
5. closed mould upsetting squeeze composite molding die according to claim 4, which is characterized in that the first hollow shaft packet
It includes:
Hollow shaft body；
First radial flange of hollow shaft body one end is set, and the hydraulic package is connect with the first radial flange；
The second radial flange of hollow shaft ontology axial displacement is limited, which is arranged in the another of hollow shaft body
End, one end of the second radial flange and the first mounting base or the bearing assembly being mounted in the first mounting base, which are formed, to be supported.
6. closed mould upsetting squeeze composite molding die according to claim 5, which is characterized in that the first bearing assembly packet
The first plane bearing is included, the first through hole in first mounting base is stepped hole, and the first plane bearing is mounted on stepped hole
In large diameter hole, second radial flange is formed after connecting with the first plane bearing and is supported.
7. closed mould upsetting squeeze composite molding die according to claim 4, which is characterized in that the first bearing assembly includes the
Two plane bearings, 3rd bearing, the first through hole in first mounting base is stepped hole, and the second plane bearing is mounted on step
In the large diameter hole in hole, and second bearing is connect with one end of the first hollow shaft, and 3rd bearing is mounted in the diameter holes of stepped hole.
8. closed mould upsetting squeeze composite molding die according to claim 3, which is characterized in that the driver includes:
It is matched with the upper die transmission mechanism；
Bracket, transmission mechanism are installed in rotation on one end of bracket, and the other end of bracket is arranged on lower template component；
First driving part, the first driving part is rack-mount, and the output end of the first driving part is connect with transmission mechanism.
9. closed mould upsetting squeeze composite molding die according to claim 8, which is characterized in that the driver further include:
Second driving part, the other end and lower template component slippage of bracket cooperate, and the second driving part is connect with bracket, and second
Driving part driving arm linear motion makes transmission mechanism cooperate or separate with upper mold.
10. closed mould upsetting squeeze composite molding die according to claim 8, which is characterized in that the section of the bracket is in L
Shape further includes support member, and one end of support member is fixedly connected with lower template component, and the other end and bracket of support member are sliding
Dynamic cooperation.
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| CN201910387542.1A CN110052566B (en) | 2019-05-10 | 2019-05-10 | Closed die upsetting-extrusion composite forming die |
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| CN201910387542.1A CN110052566B (en) | 2019-05-10 | 2019-05-10 | Closed die upsetting-extrusion composite forming die |
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| CN111702117A (en) * | 2020-06-18 | 2020-09-25 | 中国第一重型机械股份公司 | Die forging method and die for cylinder with side pipe seat |
| CN113579144A (en) * | 2021-09-26 | 2021-11-02 | 中国航发北京航空材料研究院 | Upsetting die and forming method for round bar with ultra-large height-diameter ratio |
| CN114589284A (en) * | 2022-05-10 | 2022-06-07 | 中北大学 | One-fire cogging die and method for alloy bar and upsetting-extruding-upsetting large deformation method |
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| CN113579144A (en) * | 2021-09-26 | 2021-11-02 | 中国航发北京航空材料研究院 | Upsetting die and forming method for round bar with ultra-large height-diameter ratio |
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| CN114589284A (en) * | 2022-05-10 | 2022-06-07 | 中北大学 | One-fire cogging die and method for alloy bar and upsetting-extruding-upsetting large deformation method |
| CN114589284B (en) * | 2022-05-10 | 2022-07-29 | 中北大学 | One-fire cogging die and method for alloy bar stock and upsetting-extruding-upsetting large deformation method |
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|---|---|
| CN110052566B (en) | 2024-07-16 |
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