CN109590422A - A kind of drum-type turns to pre- forging enclosed near-net-shape technique and mold eventually - Google Patents
A kind of drum-type turns to pre- forging enclosed near-net-shape technique and mold eventually Download PDFInfo
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- CN109590422A CN109590422A CN201910120263.9A CN201910120263A CN109590422A CN 109590422 A CN109590422 A CN 109590422A CN 201910120263 A CN201910120263 A CN 201910120263A CN 109590422 A CN109590422 A CN 109590422A
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- forging
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- cavity plate
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- 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
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- 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
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- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention provides a kind of drum-type knuckle finish-forging part enclosed near-net-shape technique and molds, for fork ear with bar portion axis at the drum-type knuckle forging of certain angle of deviation, by the pre- forging of drum-type knuckle obtained by Closed Extrusion near-net-shape, it is put into the enclosed finish-forging near net forming mould that can vertically divide, apply forming force and mold clamping force by upper mold, it is made to be configured to drum-type knuckle forging.The present invention also provides the molds for realizing the above method, working portion include punch-pin, can subassembly cavity plate and combined die closure and stretching mechanism, make that cavity plate can be divided to close up to form concave die cavity using cross cylinder and T-rail, apply forming force using punch-pin, while the vertical pressure that forging equipment applies is switched into the pressure of horizontal direction to provide mold clamping force using cone cylinder structure.The present invention is by the net forming technology of enclosed and can divide cavity die structure vertically, can be realized the near-net-shape of drum-type knuckle finish-forging part, and be able to achieve forging and smoothly take out.
Description
Technical field
The invention belongs to knuckle forging process methods, and in particular to a kind of drum-type knuckle finish-forging part enclosed near-net-shape
Technique and mold.
Background technique
For fork ear and drum-type knuckle forging (Fig. 1) of the bar portion axis at certain angle of deviation, at present more universal forging
Making technique includes three base, horizontal blocking and horizontal finish-forging steps.(design of forging die handbook (second edition), mechanical industry goes out Lv Yan
Version society, 2006.) it describes whole through three work step bases and horizontal open type on the basis of horizontal open type blocking on hotdie forging press
The outstanding problem of forging process, this tradition contour forging technique is that overlap metal loss is up to 27%~28%.(automobile turns Zhang Yunjun etc.
To the research and development of section thin-sheet finish forge technology and using forging technology, 2018,43 (8): 1-7.) report a kind of similar to drum-type
And then the knuckle of knuckle carries out open type thin-sheet finish-forging after carrying out open type thin-sheet blocking, its advantage is that overlap is golden
Belong to loss not increase on the basis of blocking, is still 12%~13%.In order to further increase stock utilization, Li Huanyu etc.
(influence hot-working of the spindle forging method to processing technology, 2013, (7): 50-52.) passes through on the inside of two fork ears
Vertical enclosed blocking and enclosed finish-forging are realized in feed supplement, but mended material it is subsequent still need to cut remove.
Summary of the invention
The present invention provides a kind of drum-type knuckle finish-forging part enclosed near-net-shape technique and mold, can be hydraulic in conventional finish forge
Realize fork ear and bar portion axis at the near-net-shape of the knuckle finish-forging part at the inclination angle α on machine.It is characterized by:
(1) a kind of enclosed near-net-shape technique of drum-type knuckle finish-forging part, Forming Theory are by enclosed vertical extrusion
The pre- forging of drum-type knuckle obtained by near-net-shape, is put into the cavity plate of enclosed finish-forging near net forming mould, is applied by punch-pin and is made
Firmly, it is made to be configured to drum-type knuckle forging, only with other parts mating part there are small machining allowance on forging,
Remaining part point reaches drum-type knuckle part requirements.
(2) realize that the pre- forging of the drum-type knuckle finish-forging part enclosed near-net-shape technique is designed as plane fork-shaped knot
Structure, bar portion shape and size are identical as finish-forging part；Flange design is tangent with two fork ear floor projection shapes and thickness increase
Rectangular configuration；The cross sectional shape of two fork ears is identical as finish-forging part fork ear lower section cross sectional shape, and side length is finish-forging part side length
Reduce 1mm, the vertical tetrahedron that four corner angle are r2, height determines that two straight fork ears are along height according to respective volume is equal
Direction is parallel to the vertical direction, and bar portion axis is tilted to the right, oblique angle α.
(3) realize the mold (Fig. 2) of the drum-type knuckle finish-forging part enclosed near-net-shape technique, including mould bases, punch-pin,
It can subassembly cavity plate and combined die closure and stretching mechanism.Mould bases by lower template 1, cope plate 8, guide post 2 and pressing ring 3, lead
Set 7 is formed, and guide post 2 is fastened with 1 transition fit of lower template and using screw by pressing ring 3 and lower template 1, the same upper mold of guide sleeve 7
8 transition fit of plate is simultaneously fastened as a whole using screw；Punch-pin 9 is fixed below cope plate 8；Can subassembly cavity plate it is half recessed by a left side
Mould 6 and right half cavity plate 11 composition, left half cavity plate 6 are connected as one by screw with lower template 1, and right half cavity plate 11 passes through its bottom
T-rail cooperate with T-slot corresponding in lower template 1；Combined die closure and stretching mechanism are by conically shaped 5, four six
4, four nitrogen gas springs 10 of angle fillister head screw and connecting rod 12 are formed, and conically shaped 5 passes through four uniformly distributed interior hexagonal cylindrical heads
Screw 4 is connected with cope plate 8, and four uniformly distributed nitrogen gas springs 10 are placed in the hole corresponding with cope plate 8 of conically shaped 5, interior hexagonal
The length of fillister head screw 4 and the compression travel of nitrogen gas spring 10 determine that 12 left end of connecting rod is logical according to the impulse stroke of punch-pin 9
It crosses screw thread to be connected with right half cavity plate 11, right end is connected with forging equipment cross cylinder piston rod.The lower template 1 and cope plate of mold
8 be separately mounted to the upper surface of workbench of finish forge hydraulic press with below outer slide.
Further, the forging equipment is the finish forge hydraulic press that a cross cylinder is equipped on the right of workbench.
Further, left and right half cavity plate 6,11 flange cavity edge designs are at step structure, and step upper section is along flange
Type chamber straight-arm extends outwardly 6~8mm in parallel, at the end of finish-forging shapes, forms a parallel shunting pressure letdown chamber along flange outer rim.
(4) course of work of the mold are as follows: the pre- forging of knuckle is put by the first step by craft or robot clamp
In fixed half cavity plate 6 of a left side and it remain stationary；Second step, cross cylinder makes piston rod to moving to left on the right side of operation finish forge hydraulic press
It is dynamic, it pushes right half cavity plate 11 to be moved to the left by connecting rod 12, is closed with left half cavity plate 6 and compresses pre- forging, at this time clamp pine
It opens and exits；Third step, operation finish forge slider of hydraulic press drive punch-pin 9 and 5 downlink of conically shaped, and conically shaped 5 first passes through nitrogen bullet
Spring 10 compresses two and half cavity plates 6,11, and subsequent 9 downlink of punch-pin applies active force to pre- forging, produces the left and right fork ear of pre- forging
Raw compressive deformation and upsetting formation goes out former and later two semicylinders of finish-forging part fork ear upper section, while keeping pre- forging fork-shaped bottom golden
Belong to and Radial Flow is changed into shape left and right flanges by compressive state, and then is configured to required drum-type knuckle finish-forging part；The
Four steps, after die forging, operation finish forge slider of hydraulic press drives punch-pin 9 and the upward backhaul of conically shaped 5 to initial position；5th
Step operates right cross cylinder and moves right and moves T-slot of right half cavity plate 11 in lower template 1 and separate two halves cavity plate,
Finish-forging part is then taken out, so far, a working cycles terminate.
This item finish-forging technique, which is pre- forging, is formed to conform to the drum-type knuckle of drawing requirement in dividing in cavity plate for closure
Forging, stock utilization is up to 99% or more.Meanwhile according to drum-type knuckle forging along vertical plane where fork ear mid-plane
Left and right symmetrical structure feature, by Die Design at it is left and right it is symmetrical vertically can separation structure, enclosed is constituted using open/close mechanism
Die forging equipment special is, it can be achieved that complicated drum-type knuckle and the similar knuckle enclosed finish-forging near-net-shape batch of structure
Production, and mold does not have to setting liftout attachment, simplifies structure, can shorten the die forging production operation time.Compared with die forging work
Skill and equipment production compare, and section material proposes effect significantly.In addition, the design for shunting pressure letdown chamber not only contributes to the gold in the middle part of flange
Belong to the edge for smoothly flowing into flange cavity, and die-forging forming power can be reduced, while the variation of stock volume is also adjusted.
Detailed description of the invention
Fig. 1 is drum-type knuckle end forging drawing.
Fig. 2 is drum-type knuckle finish-forging part enclosed near net forming mould schematic diagram.
Marking in Fig. 2 is lower template 1, guide post 2, pressing ring 3, hexagon socket cap head screw 4, conically shaped 5, left half cavity plate 6,
Guide sleeve 7, cope plate 8, punch-pin 9, nitrogen gas spring 10, right half cavity plate 11, connecting rod 12.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.
Select the A90 type spindle of the recent domestic huge market demand answering as this item new process and mold
Use example.To adapt to enclosed finish-forging near-net-shape, pre- forging head is designed as plane fork configuration, forging is pressed in fork ear cross section
It pitches ear lower section cross sectional shape and size and determines that shape is rectangle, long 87mm, wide 58mm, fork ear height is according to whole forging drawing (figure
1) volume of corresponding fork ear determines on, and larger fork ear height is 135mm, and smaller fork ear height is 113.5mm；Flange level is thrown
Shadow shape is identical as the two fork rectangular shapes of ear enveloping solid floor projection on forging drawing, long 226.7mm, wide 87mm, height root
Volume according to finish-forging part flange section is determined as 35mm；Bar portion shape and size and finish-forging part it is identical.
Fig. 2 provides finish-forging die structural schematic diagram of the present invention, including mould bases, punch-pin, can subassembly cavity plate and combination it is recessed
Mould closure and stretching mechanism.Mould bases is made of lower template 1, cope plate 8, guide post 2 and pressing ring 3, guide sleeve 7, guide post 2 and lower template
1 transition fit is simultaneously fastened using screw by pressing ring 3 and lower template 1, and guide sleeve 7 is with 8 transition fit of cope plate and tight using screw
It is solidified as a whole；Punch-pin 9 is fixed below cope plate 8；Can subassembly cavity plate be made of half cavity plate 6 of a left side and right half cavity plate 11, it is left
Half cavity plate 6 is connected as one by screw with lower template 1, right half cavity plate 11 pass through the T-rail of its bottom with it is right in lower template 1
The T-slot cooperation answered；Combined die closure and stretching mechanism are by the nitrogen of hexagon socket cap head screw 4, four of conically shaped 5, four
Spring 10 and connecting rod 12 are formed, and conically shaped 5 is connected by four uniformly distributed hexagon socket cap head screws 4 with cope plate 8, uniformly distributed
Four nitrogen gas springs 10 be placed in the hole corresponding with cope plate 8 of conically shaped 5, the length and nitrogen of hexagon socket cap head screw 4
The compression travel of spring 10 determines that 12 left end of connecting rod is connected by screw thread with right half cavity plate 11 according to the impulse stroke of punch-pin 9,
Right end is connected with forging equipment cross cylinder piston rod.The lower template 1 and cope plate 8 of mold are separately mounted to finish forge hydraulic press
The upper surface of workbench with below outer slide.
Forging equipment is the finish forge hydraulic press YK34J-2500 that a cross cylinder is equipped on the right of workbench, horizontal oil
Cylinder maximum thrust is 50 tons.
At step structure, step upper section is parallel along flange cavity straight-arm for left and right half cavity plate 6,11 flange cavity edge designs
Extend outwardly 6mm, at the end of finish-forging shapes, forms a parallel shunting pressure letdown chamber along flange outer rim.
The process for carrying out drum-type knuckle finish-forging part enclosed near-net-shape using above-mentioned mold is as follows: the first step passes through hand
The pre- forging of knuckle is put into fixed half cavity plate 6 of a left side and remain stationary by work or robot clamp；Second step operates finish forge liquid
Cross cylinder is moved to the left piston rod on the right side of press, pushes right half cavity plate 11 to be moved to the left by connecting rod 12, with left half cavity plate 6
It is closed and compresses pre- forging, clamp release at this time is exited；Third step, operation finish forge slider of hydraulic press drive punch-pin 9 and taper
5 downlinks of cylinder, first conically shaped 5 are compressed two and half cavity plates 6,11 by nitrogen gas spring 10, and subsequent 9 downlink of punch-pin applies pre- forging
Add active force, make the left and right fork ear of pre- forging generate compressive deformation and upsetting formation go out finish-forging part fork ear upper section former and later two half
Cylindrical body, while pre- forging fork-shaped bottom metal being made to be changed into Radial Flow to shape left and right flanges, in turn by compressive state
It is configured to required drum-type knuckle finish-forging part；4th step, after die forging, operation finish forge slider of hydraulic press drives punch-pin 9 and cone
The upward backhaul of shape cylinder 5 is to initial position；5th step operates right cross cylinder and moves right right half cavity plate 11 in lower template 1
T-slot it is mobile and separate two halves cavity plate, then take out finish-forging part, so far, a working cycles terminate.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of enclosed near-net-shape technique of drum-type knuckle finish-forging part, Forming Theory is by Closed Extrusion near-net-shape institute
The pre- forging of drum-type knuckle, be put into the cavity plate of enclosed finish-forging near net forming mould, by punch-pin apply active force, make its at
Shape is drum-type knuckle forging, and only with other parts mating part there are small machining allowance on forging, rest part reaches
To drum-type knuckle part requirements.
2. realizing that pre- forging described in claim 1 is designed as plane fork configuration, bar portion shape and size are identical as finish-forging part；
Flange design is to pitch the rectangular configuration that ear floor projection shape is tangent and thickness increases with two；Two fork ear cross sectional shape with
Finish-forging part fork ear lower section cross sectional shape is identical, and side length is the vertical four sides that finish-forging part side length reduces 1mm, four corner angle are r2
Body, height determine that two straight fork ears are parallel to the vertical direction along short transverse, and bar portion axis is to the right according to respective volume is equal
Inclination, oblique angle α.
3. realize claim 1 described in enclosed finish-forging near-net-shape technique mold, including mould bases, punch-pin, can subassembly cavity plate,
And combined die is closed and stretching mechanism.Mould bases is made of lower template 1, cope plate 8, guide post 2 and pressing ring 3, guide sleeve 7, is led
Column 2 and 1 transition fit of lower template are simultaneously fastened using screw by pressing ring 3 and lower template 1, guide sleeve 7 with 8 transition fit of cope plate simultaneously
It is fastened as a whole using screw；Punch-pin 9 is fixed below cope plate 8；Can subassembly cavity plate by half cavity plate 6 of a left side and right half cavity plate
11 compositions, left half cavity plate 6 are connected as one by screw with lower template 1, and right half cavity plate 11 is by the T-rail of its bottom under
Corresponding T-slot cooperation in template 1；Combined die closure and stretching mechanism by 5, four hexagon socket cap head screws 4 of conically shaped,
Four nitrogen gas springs 10 and connecting rod 12 are formed, and conically shaped 5 passes through uniformly distributed four hexagon socket cap head screws 4 and cope plate 8
It is connected, four uniformly distributed nitrogen gas springs 10 are placed in the hole corresponding with cope plate 8 of conically shaped 5, the length of hexagon socket cap head screw 4
It spends and is determined with the compression travel of nitrogen gas spring 10 according to the impulse stroke of punch-pin 9,12 left end of connecting rod is recessed by screw thread and the right side half
Mould 11 is connected, and right end is connected with forging equipment cross cylinder piston rod.The lower template 1 and cope plate 8 of mold are separately mounted to mould
Forge the upper surface of workbench of equipment with below outer slide.
4. forging equipment as claimed in claim 3, which is characterized in that be equipped with a level on the right of the workbench of finish forge hydraulic press
Oil cylinder.
5. left and right half cavity plate 6,11 as claimed in claim 3, which is characterized in that flange cavity edge designs are at step structure, platform
Rank upper section extends outwardly 6~8mm in parallel along flange cavity straight-arm, at the end of finish-forging shapes, along flange outer rim formed one it is parallel
Shunting pressure letdown chamber.
6. mold as claimed in claim 3, the course of work are the first step, by craft or robot clamp that knuckle is pre-
Forging is put into fixed half cavity plate 6 of a left side and remain stationary；Second step, operation finish forge hydraulic press right side cross cylinder make piston rod
It is moved to the left, pushes right half cavity plate 11 to be moved to the left by connecting rod 12, be closed with left half cavity plate 6 and compress pre- forging, at this time
Clamp release is exited；Third step, operation finish forge slider of hydraulic press drive punch-pin 9 and 5 downlink of conically shaped, first conically shaped 5 to pass through
Nitrogen gas spring 10 compresses two and half cavity plates 6,11, and subsequent 9 downlink of punch-pin applies active force to pre- forging, keeps pre- forging left and right
Fork ear generates compressive deformation and upsetting formation goes out former and later two semicylinders of finish-forging part fork ear upper section, while making pre- forging fork-shaped
Bottom metal is changed into Radial Flow by compressive state to shape left and right flanges, and then it is whole to be configured to required drum-type knuckle
Forging；4th step, after die forging, operation finish forge slider of hydraulic press drives punch-pin 9 and the upward backhaul of conically shaped 5 to initial bit
It sets；5th step operates right cross cylinder and moves right and moves T-slot of right half cavity plate 11 in lower template 1 and keep two halves recessed
Mould separates, and then takes out finish-forging part, so far, a working cycles terminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910120263.9A CN109590422B (en) | 2019-02-18 | 2019-02-18 | Closed near-net forming process and die for drum type steering knuckle finish forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910120263.9A CN109590422B (en) | 2019-02-18 | 2019-02-18 | Closed near-net forming process and die for drum type steering knuckle finish forging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109590422A true CN109590422A (en) | 2019-04-09 |
| CN109590422B CN109590422B (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910120263.9A Active CN109590422B (en) | 2019-02-18 | 2019-02-18 | Closed near-net forming process and die for drum type steering knuckle finish forging |
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| Country | Link |
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| CN (1) | CN109590422B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110293198A (en) * | 2019-06-18 | 2019-10-01 | 湖北三环锻造有限公司 | Knuckle near-net-shape forging |
| CN117300029A (en) * | 2023-09-28 | 2023-12-29 | 郑煤机智鼎液压有限公司 | Local upsetting forming device and method for ultra-long and ultra-large-diameter secondary cylinder barrel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4967584A (en) * | 1988-02-19 | 1990-11-06 | Nissan Motor Co., Ltd. | Method of making a forging in closed-dies |
| JP2006150445A (en) * | 2004-10-26 | 2006-06-15 | Sanyo Special Steel Co Ltd | Continuous cold forging method of knuckle spindle |
| CN101607294A (en) * | 2009-07-08 | 2009-12-23 | 湖北三环锻造有限公司 | Medium and heavy automobile knuckle stamp forging extruding compound technology |
| CN101972835A (en) * | 2010-09-10 | 2011-02-16 | 湖北三环锻造有限公司 | Closed forging technique for steering knuckle |
| CN102489659A (en) * | 2011-11-16 | 2012-06-13 | 日照市七星汽车部件有限公司 | Method for forging steering knuckle |
-
2019
- 2019-02-18 CN CN201910120263.9A patent/CN109590422B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4967584A (en) * | 1988-02-19 | 1990-11-06 | Nissan Motor Co., Ltd. | Method of making a forging in closed-dies |
| JP2006150445A (en) * | 2004-10-26 | 2006-06-15 | Sanyo Special Steel Co Ltd | Continuous cold forging method of knuckle spindle |
| CN101607294A (en) * | 2009-07-08 | 2009-12-23 | 湖北三环锻造有限公司 | Medium and heavy automobile knuckle stamp forging extruding compound technology |
| CN101972835A (en) * | 2010-09-10 | 2011-02-16 | 湖北三环锻造有限公司 | Closed forging technique for steering knuckle |
| CN102489659A (en) * | 2011-11-16 | 2012-06-13 | 日照市七星汽车部件有限公司 | Method for forging steering knuckle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110293198A (en) * | 2019-06-18 | 2019-10-01 | 湖北三环锻造有限公司 | Knuckle near-net-shape forging |
| CN110293198B (en) * | 2019-06-18 | 2020-11-17 | 湖北三环锻造有限公司 | Steering knuckle near-net forming precision forging process |
| CN117300029A (en) * | 2023-09-28 | 2023-12-29 | 郑煤机智鼎液压有限公司 | Local upsetting forming device and method for ultra-long and ultra-large-diameter secondary cylinder barrel |
| CN117300029B (en) * | 2023-09-28 | 2024-06-11 | 郑煤机智鼎液压有限公司 | Local upsetting forming device and method for ultra-long and ultra-large-diameter secondary cylinder barrel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109590422B (en) | 2021-02-26 |
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