CN201862726U - Multi-ram forging die for 40Cr steel engine seat parts - Google Patents
Multi-ram forging die for 40Cr steel engine seat parts Download PDFInfo
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- CN201862726U CN201862726U CN2010206338432U CN201020633843U CN201862726U CN 201862726 U CN201862726 U CN 201862726U CN 2010206338432 U CN2010206338432 U CN 2010206338432U CN 201020633843 U CN201020633843 U CN 201020633843U CN 201862726 U CN201862726 U CN 201862726U
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Abstract
The utility model discloses a multi-ram forging die for 40Cr steel engine seat parts. The multi-ram forging die comprises an upper half concave die, a lower half concave die, a right convex die, a left convex die, a left convex die slider, a right convex die slider, a die set and an ejecting mechanism, wherein the die set has a supporting function, the ejecting mechanism ejects forge pieces out when in stripping, the upper half concave die and a lower half concave die which are symmetric horizontally are provided with T-shaped sections and are horizontally symmetric split die structures, the right convex die and the left convex die are provided with T-shaped sections, are respectively located on the left and the right of a longitudinal symmetric line of the die and are vertical split die structures, grooves used for forming bosses on two sides of a forging piece are arranged on portions, which correspond to the right convex die and the left convex die, of the upper half concave die and the lower half concave die, and the upper half concave die, the lower half concave die, the right convex die and the left convex die form an impression. The multi-ram forging die is simple in structure, convenient in manufacture, installation and use and reliable in operation, can greatly reduce friction resistance between the forging piece and the impression, obviously prolongs service life, increases quality of the surface of the forging piece, is large in material utilization rate, realizes one-step forming, and does not need pre-forging.
Description
Technical field
The utility model relates to the die-forging forming mould of machine components, particularly is used to produce the mould of the multinomial die forging of 40Cr steel body seat class part, belongs to metal material plastic forming technology field.
Background technology
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 Yongwei " 45 and 40Cr steel crank residual forging heat modulation process " are (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.Yuan Meiling, Xue Kemin, once sit " connecing the numerical simulation study of the multinomial die forging metal flow of body rule " such as the tinkling of pieces of jade and (process referring to metal, 2009(3), 47～49 pages) adopt the three-dimensional die-forging forming to connect body, the multinomial die forging metal flow of butt joint body has been carried out numerical simulation, confirmation connects the multinomial extrusion metal type of flow of body more complicated, is jumping-up, instead squeezes and the recombination process of radial compression; There are following characteristics in technology that it provides and mould: cavity of resorption utilizes backward extrusion can make the die cavity filling full, but the extruding force of low punch is big and have both the function that ejects of part, can cause die life low.Dong Chuanyong, Xue Kemin, Zhao Maoyu etc. " connect the design of multinomial contour forging technique of body and mould " and (process referring to metal, 2009(23), 53～55 pages) proposed to adopt multinomial forging processing 30CrNi3A to connect the technical scheme of body forging, designed the multinomial finish forge moulding process scheme and the multinomial finish forge mould that comprise two in one in a material and a material.Determine the process program of two in a material by force analysis.Its advantage is to have solved the offset loading force problem, and makes ejecting mechanism obtain optimization, and the forging depanning is steady more, reliable, and production efficiency is largely increased, but because of two in a material, needs additional step cut-out operation after being shaped, and stock utilization reduces about 4%.Jia Jianlei, Li Ping, Xue Kemin etc. " body seat hot extrusion technique is analyzed and the mould design " (process referring to metal, 2009(19), 60～61 pages) proposed to adopt hot extrusion technique to process the technical scheme of 30CrMnMoTiA body seat forging, designed and comprised base, flattening and hot-pressed process program and the hot-extrusion mold that can divide the die structure, determined the process program of two of moulds by force analysis; Its advantage is to have solved the offset loading force problem, and has reduced follow-up machined man-hour, has improved the utilization rate of material, has reduced production cost, but because still need behind the base to flatten earlier, can't accomplish one step forming, so productivity ratio has remained still to be improved.Summer, huge Zan, Hu Guoan etc. studied multinomial stamp forging mould of 7A04 aluminum alloy casing body class part and multinomial contour forging technique (referring to Chinese patent file CN 101214526 and CN 201217051Y) etc., yet nobody is by adopting multinomial contour forging technique 40Cr steel body seat class to be carried out the research of multinomial die forging.
Summary of the invention
The utility model provides a kind of multinomial stamp forging mould of 40Cr steel body seat class part at the above-mentioned deficiency of prior art, and purpose is to overcome effectively the problems referred to above that exist in existing open die forging, impressing forging technology and the isothermal forging process.
The multinomial stamp forging mould of a kind of 40Cr steel body seat class part of the present utility model, it is characterized in that: comprise first die, second die, right side punch, left side punch, left side punch slide block, right side punch slide block, passive 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; Right side punch, left side punch have convex shape section, are positioned at the right and left of the vertical line of symmetry of mould, are the vertical mode structure that divides; First die and the corresponding right side of second die punch, punch position, left side have the type groove of the forging both sides boss that is used to be shaped; First die, second die constitute impression between right side punch, the left side punch, the body seat hot forging shape of the shape of described impression and size and design in advance and measure-alike;
First die is connected with the upper bolster of mould bases, and upper bolster drives first die and moves up and down; Second die is arranged on the die shoe of mould bases;
Right side punch, left side punch are connected with right side punch slide block, left side punch slide block respectively, and right side punch slide block, left side punch slide block drive the right side punch respectively, the left side punch moves, and realize matched moulds or divide mould;
Further feature is: described first die is equipped with 3～5 ° withdrawing pattern inclined-plane corresponding to right side punch and/or punch rear and front end, left side, and second die is equipped with 1～3 ° withdrawing pattern inclined-plane corresponding to right side punch and/or punch rear and front end, left side.
Described ejecting mechanism, by knock-pin, die pad and insert and constitute, the following end in contact of the upper end of knock-pin and die pad, inserting is arranged on the die pad, and its lower end contacts with die pad, and the upper end is a forming surface; Knock-pin is arranged on the die shoe of mould bases and ejecting in the hole of second die.
Described first die and the equal correspondence of second die are provided with pilot pin.
Between first die and the upper bolster, location load key arranged between second die and the die shoe.
The utility model can effectively overcome the problem that existing two kinds of contour forging techniques 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, impression is symmetrically distributed, multinomial die forging is, forging all is in strong three-dimensional compressive stress state, the utility model is compared with open die forging, impressing forging on the die hammer, and its difference and advantage are: the multinomial die forging of the 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, and the forging stock utilization improves more than 30% than open die forging, impressing forging.
The utility model mould structure is simple, manufacturing, easy to install and use, reliable operation; Blank is out of shape by upsetting squeeze during forging and pressing through heating in medium frequency to 1000 ℃～1180 ℃, and forging is under the triaxial pressure state and is shaped, and has significantly improved the Plastic Forming performance of 40Cr steel; Mould is designed to multinomial minute mode structure and realizes once multinomial die-forging forming, can significantly reduce die-forging forming and forging and eject that forging further improves forging surface quality with the contact friction resistance on impression surface in the process, and significantly improve die life.
But described multinomial stamp forging mould once-forming 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 body seat 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 comprises first die 2, second die 6; right side punch 11, left side punch 12, left side punch retainer 4, left side punch slide block 5, right side punch retainer 16, right side punch slide block 17, mould bases and the ejecting mechanism that when the demoulding, forging is ejected; described mould bases is made up of upper bolster 1, die shoe 7; first die 2 is connected on the upper bolster 1; second die 6 is connected on the die shoe 7, and upper bolster 1, die shoe 7 are respectively applied for fixing and support first die 2 and second die 6.
First die 2 of horizontal symmetrical has convex shape section with second die 6, for horizontal symmetrical is divided mode structure; Described right side punch 11, left side punch 12 all have convex shape section, are positioned at the right and left of the vertical line of symmetry of mould, are the vertical mode structure that divides; First die 2, second die 6 and right side punch 11, left side punch 12 have the type groove of the forging both sides boss that is used to be shaped; Between first die 2, second die 6 and the right side punch 11, or between first die 2, second die 6 and the left side punch 12, or form impression 13 between first die 2, second die 6 and right side punch 11, the left side punch 12, this impression 13 is identical with pre-designed body seat hot forging shape and size, and blank is subjected to multinomial active force die-forging forming in impression 13.Left side punch 12 has shoulder with right side punch 11, and is spacing by shoulder during matched moulds, guarantees positional precision.
Described first die 2 is connected with the upper bolster 1 of mould bases, and upper bolster 1 moves up and down with first die 2 of drive; Second die 6 is arranged on the die shoe 7 of mould bases;
It is 3～5 ° that described first die 2 is equipped with 3～5 ° withdrawing pattern inclined-plane 14(pattern draft corresponding to right side punch 11 and/or left side punch 12 rear and front ends), second die 6 is equipped with 1～3 ° withdrawing pattern inclined-plane corresponding to right side punch 11 and/or left side punch 12 rear and front ends, makes things convenient for the part withdrawing pattern.
Ejecting mechanism of the present utility model ejects forging when the demoulding, can select the ejecting mechanism of prior art for use.The utility model provides a kind of concrete ejecting mechanism, by knock-pin 9, die pad 8 and insert and 10 constitute, the following end in contact of the upper end of knock-pin 9 and die pad 8, insert and 10 be arranged on the die pad 8, its lower end contacts with die pad 8, the upper end contacts with forging, and the upper surface is a forming surface, participates in the part moulding; Knock-pin 9 is arranged on ejecting in the hole of die shoe and second die 6, its lower end is stretched device with the top of drop press and is connected, and stretches on the top of forcing press under the device band up and moves, and drives die pad 8 and insert 10 up to move, forging in the impression 13 is ejected, conveniently stripped.
Described first die 2 and second die 6 equal correspondences are provided with pilot pin 3, play guiding and positioning action when first die 2 and second die 6 matched moulds.
Between described first die 2 and the upper bolster 1, location load key 18 arranged between second die 6 and the die shoe 7.
Shown in Fig. 3,4, mould of the present utility model, two stations are arranged in a secondary mould, two impressions 13 are promptly arranged, accordingly, the impression 13 on the left side just has only left side punch 12(to be difficult to be provided with the right side punch usually on the impression 13 on the double left side), the impression 13 on the right just has only right side punch 11(to be difficult to be provided with the left side punch usually), if the mould of single station, the right and left at impression 13, all be provided with left side punch 12 and right side punch 11, the blank in impression 13 is exerted pressure simultaneously, makes its die-forging forming.
During work, multinomial stamp forging mould of the present utility model is fixed on the forcing press, and upper bolster 1 is connected with the master slider of forcing press, and first die 2 is connected with the upper bolster 1 of mould bases, when upper bolster 1 moves up and down under the master slider of forcing press drives, drive first die and move up and down for 2 times; Second die 6 is arranged on the die shoe 7 of mould bases, and die shoe 7 is connected with the workbench backing plate; The workbench backing plate is provided with and ejects the hole, is used to insert knock-pin 9.
Fig. 1 is certain model body seat blank schematic diagram; Fig. 6 is for adopting certain model body seat forging finished product schematic three dimensional views of Mold Making of the present utility model.According to technological requirement, select for use the 40Cr steel material of suitable shape to carry out blanking, the blank that obtains being of convenient length generally is a cylindric bar of selecting suitable diameter, its cutting length is according to technological requirement.
Embodiment 1:
The multinomial die forging process of certain model body seat forging is: the 40Cr steel wool base that will be heated to 1100 ℃; put into the impression 13 of second die 6; blank pattern thorax is inboard to be placed; upper bolster 1 and first die 2 with the forcing press master slider go downwards to blank flattened and close up with second die till; then side punch 11 with side punch slide block 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 5000KN; after die forging finishes; a left side; the right side punch is with a left side; move from impression 13 to both sides by side punch slide block and to withdraw to the home position; first die 2 is with the master slider backhaul; by 8; 9; 10 ejecting mechanisms of forming eject forging from second die impression 13, and the gained forging as shown in Figure 6.Whole multinomial die forging process is automatic operating process.Pilot pin 3 is used for upper and lower half die the matched moulds location is installed.
Embodiment 2:
The 40Cr steel that is heated to 1080 ℃ is justified blank put into forging and molding in 230 ℃ the multinomial forging mold.All the other details are identical with embodiment 1.
Claims (5)
1. multinomial stamp forging mould of 40Cr steel body seat class part, it is characterized in that: comprise first die (2), second die (6), right side punch (11), left side punch (12), left side punch slide block (5), right side punch slide block (17), passive mould bases and the ejecting mechanism that when the demoulding, forging is ejected;
First die (2) of horizontal symmetrical has convex shape section with second die (6), for horizontal symmetrical is divided mode structure; Right side punch (11), the left side punch (12) of described left and right symmetry have convex shape section, are positioned at the right and left of the vertical line of symmetry of mould, are the vertical mode structure that divides; First die (2) and second die (6) corresponding right side punch (11), left side punch (12) position have the type groove of the forging both sides boss that is used to be shaped; First die (2), second die (6) constitute impression (13) between right side punch (11), the left side punch (12), the body seat hot forging shape of the shape of impression (13) and size and design in advance and measure-alike;
First die (2) is connected with the upper bolster (1) of mould bases, and upper bolster (1) drives first die (2) and moves up and down; Second die (6) is arranged on the die shoe (7) of mould bases;
Right side punch (11), left side punch (12) are connected with right side punch slide block (17), left side punch slide block (5) respectively; right side punch slide block (17), left side punch slide block (5) drive right side punch (11) respectively, left side punch (12) moves, and realize matched moulds or divide mould.
2. multinomial stamp forging mould according to claim 1, it is characterized in that: described first die (2) is equipped with 3～5 ° withdrawing pattern inclined-plane (14) corresponding to right side punch (11) and/or left side punch (12) rear and front end, and second die (6) is equipped with 1～3 ° withdrawing pattern inclined-plane corresponding to right side punch (11) and/or left side punch (12) rear and front end.
3. multinomial stamp forging mould according to claim 2, it is characterized in that: described ejecting mechanism, constitute by knock-pin (9), die pad (8) and insert (10), the following end in contact of the upper end of knock-pin (9) and die pad (8), insert (10) be arranged on the die pad (8), its lower end contacts with die pad (8), and the upper end is a forming surface; Knock-pin (9) is arranged on the die shoe of mould bases and ejecting in the hole of second die (6).
4. according to claim 2 or 3 described multinomial stamp forging moulds, it is characterized in that: described first die (2) and second die (6) all correspondence are provided with pilot pin (3).
5. multinomial stamp forging mould according to claim 4 is characterized in that: between first die and the upper bolster, location load key (18) arranged between second die and the die shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206338432U CN201862726U (en) | 2010-11-30 | 2010-11-30 | Multi-ram forging die for 40Cr steel engine seat parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206338432U CN201862726U (en) | 2010-11-30 | 2010-11-30 | Multi-ram forging die for 40Cr steel engine seat parts |
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| Publication Number | Publication Date |
|---|---|
| CN201862726U true CN201862726U (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206338432U Expired - Fee Related CN201862726U (en) | 2010-11-30 | 2010-11-30 | Multi-ram forging die for 40Cr steel engine seat parts |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049456A (en) * | 2010-11-30 | 2011-05-11 | 重庆理工大学 | Multi-ram die forging process method and die for 40Cr-steel frame type parts |
| CN111421041A (en) * | 2020-05-26 | 2020-07-17 | 广东泽霖机械设备有限公司 | Processing equipment without flash |
-
2010
- 2010-11-30 CN CN2010206338432U patent/CN201862726U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049456A (en) * | 2010-11-30 | 2011-05-11 | 重庆理工大学 | Multi-ram die forging process method and die for 40Cr-steel frame type parts |
| CN111421041A (en) * | 2020-05-26 | 2020-07-17 | 广东泽霖机械设备有限公司 | Processing equipment without flash |
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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 |