CN105081163A - Method for achieving flash-free forging of forging blank - Google Patents
Method for achieving flash-free forging of forging blank Download PDFInfo
- Publication number
- CN105081163A CN105081163A CN201510488795.XA CN201510488795A CN105081163A CN 105081163 A CN105081163 A CN 105081163A CN 201510488795 A CN201510488795 A CN 201510488795A CN 105081163 A CN105081163 A CN 105081163A
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- forging
- blank
- slide block
- clamping mechanism
- electric screw
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Classifications
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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
-
- 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
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/06—Swaging presses; Upsetting presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention provides a method for achieving flash-free forging of a forging blank. The method is characterized in that special forging equipment and special forging molds are adopted; and the technological process comprises the following specific steps that firstly, a heated blank is placed in the lower mold, and after the upper mold and the lower mold are closed, the upper mold and the lower mold are locked through a wedge block mold locking mechanism; after mold locking, a core rod is rapidly pushed by electric spiral mechanisms transversely arranged on the special forging equipment to extrude the blank, so that a cavity is filled with the blank, and a flash-free blank is obtained; then, the extrusion core rod is driven by the electric spiral mechanisms to reset; then, the wedge block mold locking mechanism of the special forging equipment resets; and finally a sliding block resets, and the flash-free blank is ejected out by a jacking mechanism. A new blank forging technology is adopted, the special forging equipment is used for closing the molds, and then the flash-free blank is formed in a punching and extruding manner; and forging steps can be greatly reduced, and a large number of raw materials are saved.
Description
Technical field
The present invention is a kind of process for forging of rough forging, and specifically a kind of rough forging realizes the method for non-trimming forging.
Background technology
Rough forging is now use conventional forging equipment forging out mostly, substantially all with overlap, causes stock utilization not reach 100%, and major part, between 70%-90%, is difficult to the requirement meeting forging industry energy conservation consumption reduction, reduce costs.
Summary of the invention
In order to overcome many weak points of the process appearance in process of production of overlap forging now, realizing non-trimming forging, reducing material cost and energy consumption, the present invention proposes a kind of method that rough forging realizes non-trimming forging.
Technical scheme of the present invention is: a kind of rough forging realizes the method for non-trimming forging, it is characterized in that: adopt special forging equipment, special forging mold;
The structure of special forging equipment is: comprise left column, right column, upper beam, underbeam, slide block, main hydraulic cylinder, bottom knockout hydraulic cylinder, left column, right column, upper beam, underbeam form frame, slide block is led on left column, right column by guiding pair, main hydraulic cylinder is arranged on upper beam, and main hydraulic cylinder drives slide block; Bottom knockout hydraulic cylinder is arranged on below underbeam;
Left column, right column are separately installed with left electric screw mechanism, right electric screw mechanism; The structure of left electric screw mechanism, right electric screw mechanism is identical, concrete structure is: give flywheel through one-level gear power transmission by two motors, give screw pair power transmission again by flywheel, then give slide block by screw pair power transmission, thus realize Power output;
Voussoir, right fixing voussoir are fixed in the left side that is respectively equipped with above of slide block; Be provided with voussoir clamping mechanism below upper beam, voussoir clamping mechanism comprises left voussoir clamping mechanism, right voussoir clamping mechanism, and left voussoir clamping mechanism is made up of left side small cylinder, left movable wedge, and left side small cylinder drives left movable wedge; Right voussoir clamping mechanism is made up of right side small cylinder, right movable wedge, and right side small cylinder drives right movable wedge; The upper surface of left movable wedge, the upper surface of right movable wedge are slidably matched with the lower surface of upper beam respectively;
During use, slide block moves down and puts in place, voussoir clamping mechanism locking sliding block, the tension force produced when overcoming forging and stamping; Left electric screw mechanism, right electric screw mechanism, laterally realize crushing failure at high speed forging;
Special forging mold, comprises upper die and lower die, and upper die and lower die, under matched moulds state, are provided with 1-2 transverse shear stress passage between patrix and counterdie, coordinates and be provided with extruding plug in transverse shear stress passage;
The concrete steps realizing technical process are as follows:
First, the blank of heating is put into counterdie, special forging equipment slide block, under main hydraulic cylinder dynamic action vertically downward, drives that patrix is mobile fast to be closed with counterdie, after upper and lower mould is closed, is formed the locked mode of upper and lower mould by voussoir clamping mechanism;
After locked mode, on special forging press, the electric screw mechanism of horizontally set promotes extruding plug extrusion billet fast, makes blank be full of die cavity, obtains the blank of non-trimming;
Then, electric screw mechanism drives extruding plug return; And then, the voussoir clamping mechanism return of special forging equipment; Finally, slide block return, ejects the blank of non-trimming by material jacking mechanism.
The invention has the beneficial effects as follows: because new blank forging technique, use special forging equipment first to make mould close, rear impact extrusion forms the blank of non-trimming, both drastically reduce the area forging work step, and has again saved a large amount of raw material.Use process of the present invention to carry out blank forging production, blank loss of weight about 5%-20% can be made, save about material cost 20%-40%.
Accompanying drawing explanation
Fig. 1 is the special forging equipment schematic diagram that the present invention relates to.
Fig. 2 is the special forging equipment right view that the present invention relates to.
Fig. 3 is that the present invention illustrates gear blank owing to applying the structure diagram after process of the present invention improvement.
Fig. 4 is that the present invention illustrates the die joint schematic diagram of gear blank.
Fig. 5 is that the present invention illustrates the three-dimensional sketch of gear blank forging mold and blank.
Fig. 6 is that the present invention illustrates mould after gear blank forging and the three-dimensional sketch of finish-forging part.
Wherein: 1 is left column; 2 is left electric screw mechanism; 3 is left side small cylinder; 4 is left movable wedge; 5 is left fixing voussoir; 6 is main hydraulic cylinder; 7 is upper beam; 8 is right movable wedge; 9 is right fixing voussoir; 10 is slide block; 11 is right side small cylinder; 12 is right electric screw mechanism; 1201 is screw pair; 1202 is slide block; 1203 is flywheel; 1204 is motor; 1205 is one-level gear; 13 is right column; 14 is bottom knockout hydraulic cylinder; 15 is underbeam; 20 is gear blank; 21 is first (cylindrical) die joint; 22 is second (cylindrical) die joint; 23 is the 3rd (level) die joint; 24 is patrix; 25 is counterdie; 26 is blank; 27 is left extruding drift; 28 is right extruding drift; 29 is the gear blank of final molding.
Detailed description of the invention
Special forging equipment as shown in Figure 1, comprise left column 1, right column 13, upper beam 7, underbeam 15, slide block 10, main hydraulic cylinder 6, bottom knockout hydraulic cylinder 14, left column 1, right column 13, upper beam 7, underbeam 15 form frame, slide block 10 is led on left column 1, right column 13 by guiding pair, main hydraulic cylinder 6 is arranged on upper beam 7, and main hydraulic cylinder 6 drives slide block 10; Bottom knockout hydraulic cylinder 14 is arranged on below underbeam, left column, right column is separately installed with left electric screw mechanism 2, right electric screw mechanism 12; Voussoir 5, right fixing voussoir 9 are fixed in the left side that is respectively equipped with above of slide block; Be provided with voussoir clamping mechanism below upper beam, voussoir clamping mechanism comprises left voussoir clamping mechanism, right voussoir clamping mechanism, and left voussoir clamping mechanism is made up of left side small cylinder 3, left movable wedge 4, and left side small cylinder 3 drives left movable wedge 4; Right voussoir clamping mechanism is made up of right side small cylinder 11, right movable wedge 8, and right side small cylinder 11 drives right movable wedge 8; The upper surface of left movable wedge 4, the upper surface of right movable wedge 8 are slidably matched with the lower surface of upper beam 7 respectively;
During use, slide block 10 moves down and puts in place, voussoir clamping mechanism locking sliding block, the tension force produced when overcoming forging and stamping; Left electric screw mechanism, right electric screw mechanism laterally realize crushing failure at high speed forging.
As shown in Figure 1 and Figure 2, in the present invention, the structure of left electric screw mechanism and right electric screw mechanism is identical, the structure of right electric screw mechanism is: by two motors 1204 through one-level gear 1205 power transmission to flywheel 1203, by flywheel 1203 again power transmission to screw pair 1201, again by screw pair 1201 power transmission to slide block 1202, thus realize the Power output of electric screw mechanism.
Bottom knockout hydraulic cylinder according to different products, can adjust angle of inclination.
The present invention adopt the major function of forging equipment to be as shown in Figure 1: slide block (or upwards) can carry out quick-make (or opening) mould vertically downward under the dynamic action of main hydraulic cylinder; After closed (or opening) mould, two oil cylinders on left and right two columns drive voussoir can snap in (or exiting) respectively and realize mould locking (or unblanking) between upper beam and slide block; After locking (or unblanking) mould, two electric screw mechanisms of left and right transverse movement are with active drift can carry out crushing failure at high speed forging (or returning); When needing to eject forging, material jacking mechanism according to different products, can adjust the angle of inclination of ejector beam.
Exemplify the detailed process that process of the present invention is applied to 1700KW-512 gear blank forging, illustrate that the present invention is applied to the detailed description of the invention of actual forging.
The improvement of the blank that the present invention brings and forging mold: due to the use of special forging equipment, gear blank as shown in Figure 3, cancels the pattern draft of blind pore wall in the pattern draft of blank excircle configuration and A, B, C place); Press the mode of the die joint of three shown in Fig. 4 again, 21 is first (cylindrical) die joint, 22 is second (cylindrical) die joint, 23 is the 3rd (level) die joint, as shown in Figure 4, finish-forging die is divided into four parts, patrix 24, counterdie 25, left extruding drift 27, right extruding drift 28, and be provided with 2 transverse shear stress passages between upper die and lower die, left extruding drift 27, right extruding drift 28 are equipped with in transverse shear stress passage;
Describe the forging process that application process of the present invention produces gear blank in detail: as shown in Figure 5, the blank 26 of heating is put into the die cavity of counterdie 25, on special forging equipment (adopting the special forging equipment shown in Fig. 1), slide block is under main hydraulic cylinder dynamic action vertically downward, quick drive patrix 24 closes with counterdie 25, on, after bed die is closed, voussoir clamping mechanism forms patrix 24, the locked mode of counterdie 25, now left, You Liang electric screw mechanism promotes left extruding drift 27(left extruding drift fast and makes according to the shape of the left inside blind hole structure of gear blank and size) and right extruding drift 28(right extruding drift according to the shape of the right inside blind hole structure of gear blank and size making) extrusion billet, blank is made to be full of die cavity while blind hole structure squeezing out in blank two, then, electric screw mechanism drives two extruding drift returns, then, voussoir clamping mechanism return, finally, slide block drives patrix return, as shown in Figure 6, obtains the gear blank 29 of non-trimming, completes forging process, realizes the process of non-trimming forging gear blank.The 1700KW-512 gear blank weight that former Forging Technology is produced is 20.5Kg, uses raw material 22.7Kg.The 1700KW-512 gear blank that the process for forging of application my invention is produced is 17.3Kg, uses raw material to be also 17.3Kg; New technology and old process ration: blank loss of weight 2.2Kg, loss of weight 10.7%; Save material 5.4Kg, saves 23.8%.
Above, the process that gear blank application the present invention realizes is listed.The present invention is not limited to this, and the technical scheme of foregoing summary part is only the scope of protection of the invention.
Claims (1)
1. rough forging realizes a method for non-trimming forging, it is characterized in that: adopt special forging equipment, special forging mold;
The structure of special forging equipment is: comprise left column, right column, upper beam, underbeam, slide block, main hydraulic cylinder, bottom knockout hydraulic cylinder, left column, right column, upper beam, underbeam form frame, slide block is led on left column, right column by guiding pair, main hydraulic cylinder is arranged on upper beam, and main hydraulic cylinder drives slide block; Bottom knockout hydraulic cylinder is arranged on below underbeam;
Left column, right column are separately installed with left electric screw mechanism, right electric screw mechanism; The structure of left electric screw mechanism, right electric screw mechanism is identical, concrete structure is: give flywheel through one-level gear power transmission by two motors, give screw pair power transmission again by flywheel, then give slide block by screw pair power transmission, thus realize Power output;
Voussoir, right fixing voussoir are fixed in the left side that is respectively equipped with above of slide block; Be provided with voussoir clamping mechanism below upper beam, voussoir clamping mechanism comprises left voussoir clamping mechanism, right voussoir clamping mechanism, and left voussoir clamping mechanism is made up of left side small cylinder, left movable wedge, and left side small cylinder drives left movable wedge; Right voussoir clamping mechanism is made up of right side small cylinder, right movable wedge, and right side small cylinder drives right movable wedge; The upper surface of left movable wedge, the upper surface of right movable wedge are slidably matched with the lower surface of upper beam respectively;
During use, slide block moves down and puts in place, voussoir clamping mechanism locking sliding block, the tension force produced when overcoming forging and stamping; Left electric screw mechanism, right electric screw mechanism, laterally realize crushing failure at high speed forging;
Special forging mold, comprises upper die and lower die, and upper die and lower die, under matched moulds state, are provided with 1-2 transverse shear stress passage between patrix and counterdie, coordinates and be provided with extruding plug in transverse shear stress passage;
The concrete steps realizing technical process are as follows:
First, the blank of heating is put into counterdie, special forging equipment slide block, under main hydraulic cylinder dynamic action vertically downward, drives that patrix is mobile fast to be closed with counterdie, after upper and lower mould is closed, is formed the locked mode of upper and lower mould by voussoir clamping mechanism;
After locked mode, on special forging press, the electric screw mechanism of horizontally set promotes extruding plug extrusion billet fast, makes blank be full of die cavity, obtains the blank of non-trimming;
Then, electric screw mechanism drives extruding plug return; And then, the voussoir clamping mechanism return of special forging equipment; Finally, slide block return, ejects the blank of non-trimming by material jacking mechanism.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488795.XA CN105081163A (en) | 2015-08-12 | 2015-08-12 | Method for achieving flash-free forging of forging blank |
| PCT/CN2016/094328 WO2017025029A1 (en) | 2015-08-12 | 2016-08-10 | Method of realizing forging of forging blank without trimming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488795.XA CN105081163A (en) | 2015-08-12 | 2015-08-12 | Method for achieving flash-free forging of forging blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105081163A true CN105081163A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510488795.XA Pending CN105081163A (en) | 2015-08-12 | 2015-08-12 | Method for achieving flash-free forging of forging blank |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105081163A (en) |
| WO (1) | WO2017025029A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017025029A1 (en) * | 2015-08-12 | 2017-02-16 | 曹立新 | Method of realizing forging of forging blank without trimming |
| CN108672644A (en) * | 2018-05-04 | 2018-10-19 | 杭州前进锻造有限公司 | The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017025029A1 (en) | 2017-02-16 |
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Application publication date: 20151125 |