CN105127356A - Method for implementing hot extrusion forging of universal joint yoke forging blank - Google Patents

Method for implementing hot extrusion forging of universal joint yoke forging blank Download PDF

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Publication number
CN105127356A
CN105127356A CN201510488792.6A CN201510488792A CN105127356A CN 105127356 A CN105127356 A CN 105127356A CN 201510488792 A CN201510488792 A CN 201510488792A CN 105127356 A CN105127356 A CN 105127356A
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CN
China
Prior art keywords
forging
electric screw
slide block
column
voussoir
Prior art date
Application number
CN201510488792.6A
Other languages
Chinese (zh)
Inventor
曹立新
黄永刚
曹坤
Original Assignee
曹立新
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 曹立新 filed Critical 曹立新
Priority to CN201510488792.6A priority Critical patent/CN105127356A/en
Publication of CN105127356A publication Critical patent/CN105127356A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/387Fork construction; Mounting of fork on shaft; Adapting shaft for mounting of fork
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • B21J13/025Dies with parts moving along auxiliary lateral directions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/76Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762Coupling members for conveying mechanical motion, e.g. universal joints
    • B21K1/765Outer elements of coupling members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00Manufacturing; Assembly
    • F16D2250/0023Shaping by pressure

Abstract

The invention provides a method for implementing hot extrusion forging of a universal joint yoke forging blank. The method comprises the following specific steps of (1) structural improvement of the universal joint yoke forging blank, wherein reserved blind holes which extend from the outside to the center are formed in the portions, corresponding to lug holes where universal joints are installed, of two lug forks; and (2) hot extrusion forging, wherein when forging is conducted, pre-forging is conducted through an ordinary forging press, so that a pre-forged piece is obtained; in the process of finish forging, the pre-forged piece is placed in a lower die cavity of a lug hole extrusion die on a special forging device, and after an upper lug hole extrusion die body and a lower lug hole extrusion die body are combined, die locking of the upper lug hole extrusion die body and the lower lug hole extrusion die body is conducted through a wedge die locking machine; and after die locking is accomplished, a left electric screw mechanism and a right electric screw mechanism rapidly push two mandrels to form the two lug holes in an extrusion mode, the die cavity can be filled with blank materials at the same time, and therefore the universal joint yoke forging blank with the reserved blind holes is obtained. When the method is used for conducting flange yoke blank forging production, the equipment investment can be reduced by about 50%, the weight of a forged piece can be reduced by about 15%, and the material cost can be reduced by about 30%.

Description

A kind of universal-joint fork rough forging realizes the method for hot extrusion forging
Technical field
The present invention relates to a kind of universal-joint fork blank forging method, specifically plant the method that universal-joint fork rough forging realizes hot extrusion forging in machinery and automotive transmission.
Background technology
Universal-joint fork is one of the conventional vital part of transmitting torque in machinery and automotive transmission, current universal-joint fork (shown in Fig. 1) forging process: by the universal-joint fork mold be arranged on forging press slide block under forging press dynamic action vertically downward, pressure is applied to being arranged on the heating circle blank that the universal-joint fork bed die of forging pressure machine worktable is placed, after mold and bed die close, obtain the universal-joint fork blank with larger overlap, then obtain universal-joint fork blank after edger trimming.This universal-joint fork blank needs to produce with large tonnage forging press in process of production, and cause equipment investment fund and power consumption all very large, stock utilization is lower; The earhole allowance that later stage machining installs cross axle is large especially, is difficult to meet the requirement of forging industry energy conservation and lowering consumption, reducing costs, raise the efficiency.
Summary of the invention
In order to overcome existing universal-joint fork rough forging many weak points in process of production, reduce blank weight and material cost, save equipment investment, realize the hot extrusion rough forging with earhole, the present invention proposes a kind of method that universal-joint fork blank realizes hot extrusion forging.
Technical scheme of the present invention is, a kind of universal-joint fork rough forging realizes the method for hot extrusion forging, and concrete steps are as follows:
(1) a kind of structure of universal-joint fork rough forging is improved: this universal-joint fork rough forging, pitched formed an entirety by adpting flange, two ears, two ear forks correspond to the earhole place of installing cross axle and is provided with the reserved blind hole extended from export-oriented center, bottom and the ear wall thickness range of pitching between medial surface of reserved blind hole are 2-10 millimeter, and the diameter of reserved blind hole is determined to also have allowance 1.5-6 millimeter;
(2) hot extrusion forging: blocking adopts common forging press, and finish-forging adopts special forging equipment; The structure of described special forging equipment: 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;
During forging, first on common forging press, carry out pre-forging, obtain pre-forging; Finish-forging, special forging equipment is put into pre-forging in extruding earhole lower mould chamber, special forging equipment slide block drives extruding earhole patrix to carry out matched moulds with extruding earhole counterdie vertically downward, carries out the locked mode extruding the upper and lower mould of earhole after matched moulds by voussoir clamping mechanism; After locked mode, left and right two electric screw mechanisms promote to make blank be full of die cavity while two mandrels squeeze out two earholes fast; Then, electric screw structure drives two mandrel returns, voussoir clamping mechanism return, and last slide block drives patrix return, obtains the universal-joint fork rough forging with reserved blind hole (corresponding to earhole).
The invention has the beneficial effects as follows: owing to there being new universal-joint fork rough forging structure, hot extrude extrudes block more than forging that blank earhole eliminates most of blank machined earhole position, make the processed finished products time improve about 10%, increase substantially follow-up machined efficiency.Use the present invention to carry out the production of universal-joint fork blank forging, equipment investment can be made to save more than 50%, forging loss of weight about 15%, save material cost about 30%.
Accompanying drawing explanation
Fig. 1 is the front view of universal-joint fork rough forging of the present invention.
Fig. 2 is the left view of universal-joint fork rough forging of the present invention.
Fig. 3 is the special forging equipment schematic diagram that the present invention relates to.
Fig. 4 is the special forging equipment right view that the present invention relates to.
Fig. 5 is universal-joint fork pre-forging mould structure of the present invention and blank sketch.
Fig. 6 is that the present invention extrudes earhole mould structure and pre-forging sketch.
Wherein: A1 is ring flange; A2 is ear fork; A3 is reserved blind hole; 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; 16 is blocking patrix; 17 is circle blank; 18 is blocking counterdie; 19 is extruding earhole patrix; 20 is pre-forging; 21 is extruding earhole counterdie; 22 is left drift; 23 is right drift.
Detailed description of the invention
As shown in Figure 1 and Figure 2: a kind of structure of universal-joint fork rough forging is improved: a kind of universal-joint fork rough forging, pitched A2 formed an entirety by ring flange A1, two ears, two ear fork A2 correspond to the earhole place of installing cross axle and is provided with the reserved blind hole A3 extended from export-oriented center, bottom and the ear wall thickness range of pitching between A2 medial surface of reserved blind hole A3 are 2-10 millimeter, and the diameter of reserved blind hole A3 also has allowance 1.5-6 millimeter.
Special forging equipment as shown in Figure 3, 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 3, Figure 4, 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 special forging equipment to be as shown in Figure 3: 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, power two oil cylinder on left and right two columns drives voussoir can snap in (or exiting) respectively and realizes 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.
In the present invention, the structure of described left electric screw mechanism and right electric screw mechanism is prior art, has two kinds of situations:
The first can be the screw conveyer of direct-drive electric screw press, comprises motor, the flywheel by motor direct-drive, the screw rod be fixed on flywheel, the slide block that driven by screw pair by screw rod;
The second, can be through the screw conveyer of the electric screw press that one-level gear transmits, comprise multiple motor, the rotating shaft of multiple motor is fixed with travelling gear, travelling gear engages with the edge of flywheel, realizes power transmission; Screw rod is fixedly connected with flywheel, the slide block driven by screw pair by screw rod.
As shown in Figure 5, Figure 6, describe universal-joint fork rough forging in detail and realize hot extrusion forging process: during production, on common forging press, applied pressure by blocking patrix 16 carry out first time forging to being placed on counterdie 18 heat circle blank 17, obtain pre-forging 20; Then, pre-forging 20 is put into extruding earhole lower mould 21 die cavity, special forging equipment (adopt Fig. 3 shown in equipment) slide block is under main hydraulic cylinder dynamic action vertically downward, extruding earhole patrix 20 is driven to carry out matched moulds with extruding earhole lower mould 21, after upper die and lower die tool is closed, formed the locked mode of the upper and lower mould of extruding earhole by the voussoir clamping mechanism of special forging equipment; After locked mode, inside die cavity, carry out extruding while that left and right two electric screw mechanisms promoting left drift 22 and right drift 23 fast and make blank be full of die cavity, obtain the universal-joint fork rough forging rough forging with reserved blind hole (corresponding to earhole).Then, electric screw mechanism drives two drift returns; Then, the voussoir clamping mechanism return of special forging equipment; Finally, slide block drives patrix 19 return.

Claims (1)

1. universal-joint fork rough forging realizes a method for hot extrusion forging, and concrete steps are as follows:
(1) a kind of structure of universal-joint fork rough forging is improved: this universal-joint fork rough forging; pitched formed an entirety by adpting flange, two ears; two ear forks correspond to the earhole place of installing cross axle and is provided with the reserved blind hole extended from export-oriented center; bottom and the ear wall thickness range of pitching between medial surface of reserved blind hole are 2-10 millimeter, and the diameter of reserved blind hole is determined to also have allowance 1.5-6 millimeter;
(2) hot extrusion forging: blocking adopts common forging press, and finish-forging adopts special forging equipment; The structure of described special forging equipment: 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;
During forging, first on common forging press, carry out pre-forging, obtain pre-forging; Finish-forging, special forging equipment is put into pre-forging in extruding earhole lower mould chamber, special forging equipment slide block drives extruding earhole patrix to carry out matched moulds with extruding earhole counterdie vertically downward, carries out the locked mode extruding the upper and lower mould of earhole after matched moulds by voussoir clamping mechanism; After locked mode, left and right two electric screw mechanisms promote to make blank be full of die cavity while two mandrels squeeze out two earholes fast; Then, electric screw structure drives two mandrel returns, voussoir clamping mechanism return, and last slide block drives patrix return, obtains the universal-joint fork rough forging with reserved blind hole.
CN201510488792.6A 2015-08-12 2015-08-12 Method for implementing hot extrusion forging of universal joint yoke forging blank CN105127356A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107398678A (en) * 2017-06-20 2017-11-28 万向钱潮传动轴有限公司 A kind of power transmission shaft Welded fork closing forging hot extrusion molding technique
CN109611460A (en) * 2019-01-30 2019-04-12 江苏格尔顿传动有限公司 A kind of the propeller shaft yoke class forging part and its processing method of high production efficiency
CN109759466A (en) * 2018-11-29 2019-05-17 芜湖天金机械有限公司 A kind of small passenger car universal joint or so driving shaft cold extruding pressure technique

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107398678A (en) * 2017-06-20 2017-11-28 万向钱潮传动轴有限公司 A kind of power transmission shaft Welded fork closing forging hot extrusion molding technique
CN109759466A (en) * 2018-11-29 2019-05-17 芜湖天金机械有限公司 A kind of small passenger car universal joint or so driving shaft cold extruding pressure technique
CN109611460A (en) * 2019-01-30 2019-04-12 江苏格尔顿传动有限公司 A kind of the propeller shaft yoke class forging part and its processing method of high production efficiency
WO2020155559A1 (en) * 2019-01-30 2020-08-06 江苏格尔顿传动有限公司 Transmission shaft yoke die forgoing having high production efficiency, and processing method therefor

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