CN201862725U - Multi-die-forging mold for part of 40 Cr steel machine case - Google Patents
Multi-die-forging mold for part of 40 Cr steel machine case Download PDFInfo
- Publication number
- CN201862725U CN201862725U CN2010206338146U CN201020633814U CN201862725U CN 201862725 U CN201862725 U CN 201862725U CN 2010206338146 U CN2010206338146 U CN 2010206338146U CN 201020633814 U CN201020633814 U CN 201020633814U CN 201862725 U CN201862725 U CN 201862725U
- Authority
- CN
- China
- Prior art keywords
- die
- forging
- punch
- side punch
- backing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a multi-die-forging mold for a part of a 40 Cr steel machine case, comprising a left-side male die, a right-side male die, an upper half cavity die, a lower half cavity die, a left-right side male die a die set and an ejection mechanism, wherein the die set is formed by an upper die holder and a lower die holder; the ejection mechanism ejects a forging piece during demolding; the upper half cavity die and the lower half cavity die which are horizontally symmetrical are provided with convex cross sections which have horizontally symmetrical split die structures; the left-side male die and the right-side male die have convex cross sections which are vertically symmetrical; a part of the upper half cavity die and the lower half cavity die, corresponding to the left-side male die the right-side male die, is provided with a profiled groove which is used for shaping bosses at both sides of the forging piece; the upper half cavity die, the lower half cavity die, the left-side male die and the right-side male die form a die cavity; and the die cavity is identical with a pre-designed case hot forging piece in shape and size. The multi-die-forging mold has a simple structure, and is convenient to manufacture, install and use and reliable to work; the frictional force between the forging piece and the die cavity can be greatly reduced; the service life of the die is obviously prolonged; the quality of the forging piece surface is improved; the utilization ratio of materials is high; and the materials can be shaped at a time without dummying.
Description
Technical field
The utility model belongs to the mould in metal material plastic forming technology field, particularly is used for the multinomial stamp forging mould of manufacturing machine 40Cr steel casing body class part.
Background technology
[0002] the 40Cr steel is a kind of low quenching degree quenched and tempered steel, also is domestic most widely used quenching and tempering steel, and is not so good but the machine of 40Cr steel adds performance.At present, domestic military project system is for 40Cr steel casing body class part, and traditional method is to adopt open die forging, impressing forging explained hereafter on the die hammer, and its technological process is blanking → heating → forging → side cut.The subject matter that its technology exists is, overlap is blocked up, and metal loss is big, and forging tolerance is big, and follow-up machine-finish allowance is big, and the utilization rate of material is low, in addition because hammer die forging speed height often causes the forging face crack by force because of speed sensitivity.Han Jiaxue, Wang Yong enclose etc. " 45 and 40Cr steel crank residual forging heat modulation process " (referring to metal heat treatmet, 2009(4), 75～77 pages) propose the 40Cr round steel is carried out the modifier treatment of waste heat constant temperature after the Frequency Induction Heating precision forging is shaped, can significantly improve quenching degree and other mechanical properties of 40Cr steel crank, tissue and hardness are evenly distributed.But precision forging shaping resistance of deformation is big, and the duty of mould is abominable, and it is low to cause mould to benefit from the life-span.Deng Lei, summer huge Zan, Wang Xinyun etc. " the multinomial forging research of casing body " are (referring to Chinese mechanical engineering, 2009(4), 869～872 pages) proposed to adopt multinomial forging to process the technical scheme of 7A04 casing body forging, designed process program that comprises the whole shaping of roller forging sheet stamping, multinomial finish forge preformed and multinomial finish forge and the multinomial finish forge mould that can divide the die structure.Adopt the Thermal-mechanical Coupling Finite Element Method that the forging forming process has been carried out numerical simulation, and on the analog result basis, determine that the casing body forging needs the technology of the multinomial precision forging of two work steps.Its advantage is that forging ' s block dimension is guaranteed easily, but base needs roll-forging process, and contour forging technique need two work step, and efficient is not high.Summer, huge Zan, Hu Guoan etc. studied multinomial stamp forging mould of 7A04 aluminum alloy casing body class part and multinomial contour forging technique (Chinese patent literature CN 101214526 and CN 201217051Y) etc., yet nobody is by adopting multinomial contour forging technique 40Cr steel casing body class to be carried out the research of multinomial die forging.
Summary of the invention
The utility model is at the above-mentioned deficiency of prior art, a kind of multinomial contour forging technique method of 40Cr steel casing body class part is provided, and provide the multinomial stamp forging mould of realizing multinomial contour forging technique, purpose to be to overcome effectively the problem of existing open die forging, impressing forging technology and isothermal forging process existence.
The multinomial stamp forging mould of a kind of 40Cr steel casing body class part of the present utility model, it is characterized in that: comprise first die, second die, left side punch, right side punch, support mould bases and the ejecting mechanism that when the demoulding, forging is ejected, first die and second die of horizontal symmetrical have convex shape section, for horizontal symmetrical is divided mode structure; Left side punch and right side punch have convex shape section, are vertical symmetry; First die, second die and left side punch and right side punch corresponding position are provided with the type groove, this type groove forging both sides boss that is used to be shaped; First die, second die, left side punch and right side punch constitute impression, and described impression is identical with pre-designed casing body hot forging shape and size;
First die is connected with the upper bolster that supports mould bases, and upper bolster drives first die and moves up and down; Second die is arranged on the die shoe that supports mould bases;
The left side punch is connected on the punch slide block of left side, and the right side punch is connected on the punch slide block of right side; Left side punch slide block, right side punch slide block drive the left side punch respectively, the right side punch laterally moves.
Further feature is: described first die is equipped with 3 °～5 ° withdrawing pattern inclined-plane corresponding to the rear and front end of left side punch, right side punch, and second die is equipped with 1 °～3 ° withdrawing pattern inclined-plane corresponding to the rear and front end of left side punch, right side punch.
Described ejecting mechanism, reaching down by the upper ejector pin that directly contacts with forging, backing-out punch backing plate, following backing-out punch backing plate, lower push rod, backing-out punch constitutes, upper ejector pin is some, the lower end of upper ejector pin is arranged on the backing-out punch backing plate, in the backing-out punch backing plate backing-out punch is set down, the last end in contact of the lower end of backing-out punch and lower push rod; All be provided with in second die and the die shoe and eject the hole, make things convenient for upper ejector pin or lower push rod to pass.
Described first die and the equal correspondence of second die are provided with pilot pin and correcting hole.
The utility model can effectively overcome the problem that existing two kinds of stamp forging moulds exist.Die is designed to first die and second die horizontal symmetrical is divided mode structure, the left and right side punch is distributed in the both sides of the vertical line of symmetry of upper and lower two halves die module, and impression is symmetrically distributed, and the forging that is in the impression all is in strong three-dimensional compressive stress state.The utility model is compared its advantage with open die forging, impressing forging on the die hammer: multinomial die forging of the present utility model is once finished after the heating, and the operation of need not cutting edge; Deformable metal is in strong three-dimensional compressive stress state, thereby its Plastic Forming performance greatly improves, add die forging on multinomial stamp forging hydraulic press, it is much lower that its forming speed goes up die-forging forming speed than hammer, do not exist speed too high and phenomenon that speed sensitivity that occur causes the surface to crack by force takes place; Forging non-trimming metal loss, and surplus and tolerance are little improves more than 30% than the stock utilization of open die forging, impressing forging.
The utility model is designed to mould multinomial minute mode structure and realizes once multinomial die-forging forming, can significantly reduce die-forging forming and forging and eject in the process forging with the contact friction resistance on impression surface, further improve forging surface quality, and significantly improve die life.But multinomial stamp forging mould once-forming of the present utility model need not roller forging sheet stamping and blocking.
Description of drawings
The multinomial stamp forging mould schematic diagram of Fig. 1 the utility model;
First die upward view of Fig. 2 the utility model;
First die left view of Fig. 3 the utility model;
Fig. 4 the utility model left side punch upward view;
Fig. 5 the utility model left side punch front view:
Fig. 6 model casing body forging finished product schematic three dimensional views.
The specific embodiment
As Fig. 1～shown in Figure 5, the multinomial stamp forging mould of the utility model, comprise first die 4, second die 18, left side punch 7, right side punch 19, support mould bases and the ejecting mechanism that when the demoulding, forging is ejected, supporting mould bases is made up of upper bolster 5, die shoe 12, upper cavity die backing plate 3, lower cavity die backing plate 11, first die 4 is connected with upper bolster 5 by upper cavity die backing plate 3, upper bolster 5 is connected with the master slider of impression die pressure machine, and the master slider of impression die pressure machine drives first die 4 by upper bolster 5 and moves up and down; Second die 18 is arranged on the die shoe 12, or is arranged on the die shoe 12 by lower cavity die backing plate 11; Upper bolster 5, die shoe 12 are respectively applied for fixes first die and second die.
First die 4 of horizontal symmetrical has convex shape section with second die 18, for horizontal symmetrical is divided mode structure; Described left side punch 7 has convex shape section with right side punch 19, is the vertical symmetry structure, lays respectively at the right and left of the vertical line of symmetry of mould; First die 4, second die 18 are provided with the type groove with left side punch 7 and right side punch 19 corresponding positions, this type groove forging both sides boss that is used to be shaped; First die 4, second die 18, left side punch 7 and right side punch 19 constitute impression 20, and this impression 20 is identical with pre-designed casing body hot forging shape and size, the one-shot forming in impression 20 of described casing body hot forging.Left side punch 7 has shoulder with right side punch 19, and is spacing by shoulder during matched moulds, guarantees positional precision.
It is 3～5 ° that described first die 4 is equipped with 3 °～5 ° withdrawing pattern inclined-plane 24(pattern draft corresponding to the rear and front end of left side punch 7, right side punch 19), second die 18 is equipped with 1 °～3 ° withdrawing pattern inclined-plane corresponding to the rear and front end of left side punch 7, right side punch 19, makes things convenient for the part withdrawing pattern.
Described ejecting mechanism ejects forging when the demoulding, can adopt the associated mechanisms of prior art; A kind of concrete ejecting mechanism that the utility model provides, by the upper ejector pin 2 that directly contacts with forging, backing-out punch backing plate 14, following backing-out punch backing plate 15, lower push rod 16 reaches down, and backing-out punch 17 constitutes, upper ejector pin 2 is some, the lower end of upper ejector pin 2 is arranged on the backing-out punch backing plate 14, backing-out punch 17 is set down in the backing-out punch backing plate 14, the last end in contact of the lower end of backing-out punch 17 and lower push rod 16, lower push rod 16 lower ends are stretched device with the top of forcing press and are connected, stretch under the device band up mobile on the top of forcing press, drive backing-out punch 17, backing-out punch backing plate 14, upper ejector pin 2 up moves, upper ejector pin 2 ejects the forging in the impression 20, and is conveniently stripped.All be provided with in second die 18 and the die shoe 12 and eject the hole, make things convenient for upper ejector pin 2 or lower push rod 16 to pass, corresponding to the proper site setting of forging.
Described first die 4 and second die 18 equal correspondences are provided with pilot pin 1 and correcting hole 21, play guiding and positioning action when first die 4 and second die 18 matched moulds.
During work, multinomial stamp forging mould of the present utility model is fixed on the forcing press, and upper bolster 5 is connected with master slider, and die shoe 12 is connected with workbench backing plate 13; The workbench backing plate is provided with and ejects the hole, is used to insert lower push rod 16.
The course of work of the present utility model: (1) selects for use the 40Cr steel material of suitable shape to carry out blanking, the blank that obtains being of convenient length according to technological requirement;
(2) in heater, blank is heated to 1000 ℃～1180 ℃; (3) blank is moved in the impression of multinomial stamp forging mould of the present utility model, place corresponding to the big first end of hot forging in the blank pattern thorax,, obtain the casing body forging of non-trimming blank die forging once-forming.
Fig. 6 certain model casing body forging finished product schematic three dimensional views for adopting the die forging of the utility model mould to obtain, forging stub end 22 among the figure, the microcephaly holds 23.
Embodiment 1:
The multinomial die forging process of certain model casing body forging is: the 40Cr round steel blank that will be heated to 1100 ℃; put into the impression 20 of second die 18; place corresponding to the big first end of hot forging 22 positions in the blank pattern thorax; upper bolster 5 and first die 4 with the forcing press master slider go downwards to blank flattened and close up with second die 18 till; then left; right side punch 7 and 19 with side punch slide block 8 to the center move stretch into make in the impression blank enclosed state upsetting extrusion to side punch shoulder with on; second die left side; till the contact of right side; on; the temperature of second die is 200 ℃; die-forging forming power 11000KN; after die forging finishes; a left side; the right side punch is with a left side; move from impression 20 to both sides by side punch slide block and to withdraw to the home position; first die 4 is with the master slider backhaul; by 2; 14; 15; 16; 17 ejecting mechanisms of forming eject forging from second die impression 20, and the gained forging as shown in Figure 6.Whole multinomial die forging process is automatic operating process.Pilot pin 1 and correcting hole 21 are used for upper and lower half die the matched moulds location are installed.
Embodiment 2:
The 40Cr steel that is heated to 1080 ℃ is justified blank put into forging and molding in 230 ℃ the mould.All the other details are identical with embodiment 1.
Claims (4)
1. multinomial stamp forging mould of 40Cr steel casing body class part, it is characterized in that: comprise first die (4), second die (18), left side punch (7), right side punch (19), support mould bases and the ejecting mechanism that when the demoulding, forging is ejected, first die (4) of horizontal symmetrical has convex shape section with second die (18), for horizontal symmetrical is divided mode structure; Left side punch (7) has convex shape section with right side punch (19), is vertical symmetry; First die (4), second die (18) are provided with the type groove with left side punch (7) and right side punch (19) corresponding position, this type groove forging both sides boss that is used to be shaped; Constitute impression (20) between first die (4), second die (18), left side punch (7) and the right side punch (19), impression (20) is identical with pre-designed casing body hot forging shape and size;
First die (4) is connected with the upper bolster (5) that supports mould bases, and upper bolster (5) drives first die (4) and moves up and down; Second die (18) is arranged on the die shoe (12) that supports mould bases;
Left side punch (7) is connected on the left side punch slide block (8), and right side punch (19) is connected on the right side punch slide block (25); Left side punch slide block (8), right side punch slide block (25) drive left side punch (7) respectively, right side punch (19) laterally moves.
2. multinomial stamp forging mould according to claim 1, it is characterized in that: described first die (4) is equipped with 3 °～5 ° withdrawing pattern inclined-plane (24) corresponding to the rear and front end of left side punch (7), right side punch (19), and second die (18) is equipped with 1 °～3 ° withdrawing pattern inclined-plane corresponding to the rear and front end of left side punch (7), right side punch (19).
3. multinomial stamp forging mould according to claim 1 and 2, it is characterized in that: described ejecting mechanism, reaching down by the upper ejector pin (2) that directly contacts with forging, backing-out punch backing plate (14), following backing-out punch backing plate (15), lower push rod (16), backing-out punch (17) constitutes, upper ejector pin (2) is some, the lower end of upper ejector pin (2) is arranged on the backing-out punch backing plate (14), backing-out punch (17) is set down, the last end in contact of the lower end of backing-out punch (17) and lower push rod (16) in the backing-out punch backing plate (14); All be provided with in second die (18) and the die shoe (12) and eject the hole, make things convenient for upper ejector pin (2) or lower push rod (16) to pass.
4. according to claim 2 or 3 described multinomial stamp forging moulds, it is characterized in that: described first die (4) and second die (18) all correspondence are provided with pilot pin (1) and correcting hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206338146U CN201862725U (en) | 2010-11-30 | 2010-11-30 | Multi-die-forging mold for part of 40 Cr steel machine case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206338146U CN201862725U (en) | 2010-11-30 | 2010-11-30 | Multi-die-forging mold for part of 40 Cr steel machine case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201862725U true CN201862725U (en) | 2011-06-15 |
Family
ID=44133893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206338146U Expired - Fee Related CN201862725U (en) | 2010-11-30 | 2010-11-30 | Multi-die-forging mold for part of 40 Cr steel machine case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201862725U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029348A (en) * | 2010-11-30 | 2011-04-27 | 重庆理工大学 | Multi-way die forging process method and mould for 40Cr steel case type parts |
| CN102886477A (en) * | 2012-10-19 | 2013-01-23 | 中国二十二冶集团有限公司 | Ball core closed-die forging process using valve body ball core forging die |
| CN103736894A (en) * | 2014-01-02 | 2014-04-23 | 中南大学 | Isothermal forging die and forging technology thereof of magnesium alloy die forge piece of step type structure |
| CN105081163A (en) * | 2015-08-12 | 2015-11-25 | 曹立新 | Method for achieving flash-free forging of forging blank |
-
2010
- 2010-11-30 CN CN2010206338146U patent/CN201862725U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029348A (en) * | 2010-11-30 | 2011-04-27 | 重庆理工大学 | Multi-way die forging process method and mould for 40Cr steel case type parts |
| CN102886477A (en) * | 2012-10-19 | 2013-01-23 | 中国二十二冶集团有限公司 | Ball core closed-die forging process using valve body ball core forging die |
| CN103736894A (en) * | 2014-01-02 | 2014-04-23 | 中南大学 | Isothermal forging die and forging technology thereof of magnesium alloy die forge piece of step type structure |
| CN105081163A (en) * | 2015-08-12 | 2015-11-25 | 曹立新 | Method for achieving flash-free forging of forging blank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102029348A (en) | Multi-way die forging process method and mould for 40Cr steel case type parts | |
| CN102699094B (en) | Die used in extrusion moulding of high-precision complex copper alloy thrust bearing seat | |
| CN201862725U (en) | Multi-die-forging mold for part of 40 Cr steel machine case | |
| CN102049456B (en) | Multi-ram die forging process method and die for 40Cr-steel frame type parts | |
| CN201493401U (en) | Compensation-type press-forming combined die for semi-circular thick steel plate | |
| CN103567340A (en) | Novel precision forging technology of straight toothed spur gear for automobile and mold | |
| CN210816910U (en) | Electrical apparatus contact stamping die | |
| CN204449176U (en) | A kind of block forging mould for cross axle Warm Extrusion | |
| CN201217051Y (en) | 7A04 aluminum alloy cartridge receiver body type part coredforging mould | |
| CN101823113A (en) | Method and die carrier for forging and molding special-shaped cross section metal blank with through holes | |
| CN105921671A (en) | Backward extrusion forming method of stepped hollow shaft part and die | |
| CN106077382A (en) | A kind of high intensity 20CrMoNi duplex spur gear precise forming process and mould | |
| CN103447779A (en) | Drive axle bevel gear forge piece forging process and equipment | |
| CN105033059A (en) | Cold stamping negative-angle one-time bending forming device and stamping method thereof | |
| CN201862726U (en) | Multi-ram forging die for 40Cr steel engine seat parts | |
| CN203330322U (en) | Die parting device based on flange type forging and optimizing die forging force | |
| CN203578543U (en) | Special die group for heat insulation cover production | |
| CN102632176A (en) | Novel movement recoil type hot extrusion forming and processing method | |
| CN204294758U (en) | Serpentine spring one-time-shaped mould | |
| CN202079212U (en) | Multi-motion forging module for vertical and unidirectional multi-motion forming | |
| CN204503988U (en) | The diel of crimping in the shaping panel beating of a kind of two sliding interlock | |
| CN104056967A (en) | Sliding block side shaping structure of multi-stage progressive die | |
| CN203356512U (en) | Hot die forging production line connecting rod forging blank manufacturing tool | |
| CN211363187U (en) | Car sun visor board hot pressing membrane shaping assembly | |
| CN208247435U (en) | A kind of soundproof mat for engine hood hot pressing die cutting die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20121130 |