CN104368745B - A kind of forming technology being applicable to jackshaft forging - Google Patents

A kind of forming technology being applicable to jackshaft forging Download PDF

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Publication number
CN104368745B
CN104368745B CN201410617294.2A CN201410617294A CN104368745B CN 104368745 B CN104368745 B CN 104368745B CN 201410617294 A CN201410617294 A CN 201410617294A CN 104368745 B CN104368745 B CN 104368745B
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forging
length
diameter
jackshaft
anvil
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CN104368745A (en
Inventor
司兴奎
刘殿山
曹智勇
肖广帅
张帅
孙建新
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Tongyu Heavy Industry Co Ltd
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Tongyu Heavy Industry Co Ltd
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    • 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
    • B21K1/06Making machine elements axles or shafts
    • B21K1/12Making machine elements axles or shafts of specially-shaped cross-section
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02Die forging; Trimming by making use of special dies ; Punching during forging

Abstract

The invention provides a kind of forming technology being applicable to jackshaft forging, concrete steps are as follows, 1) steel ingot is swaged into the forging blank of diameter D5; 2) carry out pressure shoulder operation, left section of pressure shoulder length degree H1 "=jackshaft forging left end weight/D5, stage casing pressure shoulder length degree H2 ", press shoulder length degree H3 "=jackshaft forging right-hand member weight/D5 for right section; 3) forging blank stage casing is forged to diameter D2 × length H2; 4) carry out die forging to left section of forging blank, upper left section of anvil spinning forging blank, to diameter D1 × length H1, carries out die forging to right section of forging blank, and upper right section of anvil spinning forging blank is to diameter D3 × length H3.Without the need to additionally increasing forge weight in forging process of the present invention, consumable material is few, also just reduces machining amount, shortens machining time, improves the efficiency that comes into force, and reduces production process consumption.

Description

A kind of forming technology being applicable to jackshaft forging
Technical field
The invention belongs to large forgings forging and molding technical field, be specifically related to a kind of forming technology being applicable to jackshaft forging.
Background technology
Fig. 1 shows the structure of jackshaft forging, for three stage structure, be left section (diameter D1, length H1), stage casing (diameter D2, length H2) and right section (diameter D3, length H3) in turn, D1 >=D3 > D2, stage casing diameter D2 is little for this forging maximum feature, left and right section diameter (D1, D3) is large and length (H1, H3) is less, and adjacent stations jump (D1-D2, D3-D2) is larger.
According to forging experience in the past, as shown in Figure 2, be first swaged into the forging blank of diameter D4 during forging, haulage reserved during D4=D1+ pressure shoulder, is generally D4=D1+60 ~ 100mm.Follow weight conservation principle, carry out pressure shoulder operation, according to left section of jackshaft forging, when stage casing and right section of respective weighing scale calculate diameter D4, the length of corresponding three sections is respectively H1 ', H2 ' and H3 ', but, due to the less and length H2 ' < anvil block 1 thickness W of stage casing diameter D2, therefore cannot forge again after carrying out pressure shoulder according to H2 ', so usually stage casing diameter clout is strengthened to increase its weight when calculating forge weight, segment length > anvil block thickness W in when object is takeed on for pressing, to meet forming requirements, the shortcoming of the method is the increase in forging blank stage casing weight, forging blank weight entirety is caused to increase, there is shortcoming:
(1) consumable material is more;
(2) machining time increases, and production efficiency is lower;
(3) forging and steel ingot weight average increase more, and production process consumption increases more.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of forming technology being applicable to jackshaft forging, to solve the defect that existing processes expend material is many, machining time is long and production efficiency is low.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
A kind of forming technology being applicable to jackshaft forging, jackshaft forging is three stage structure, be left section in turn, stage casing and right section, left section of size diameter D1 × length H1, stage casing size diameter D2 × length H2, right section of size diameter D3 × length H3, D1 >=D3 > D2, H1 < H2, H3 < H2, concrete steps are as follows
1) steel ingot is swaged into the forging blank of diameter D5, D5=jackshaft forging stage casing weight/stage casing pressure shoulder length degree H2 ", stage casing pressure shoulder length degree H2 " > anvil block thickness W,
2) carry out pressure shoulder operation, follow weight conservation principle, left section of pressure shoulder length degree H1 "=jackshaft forging left end weight/D5, stage casing pressure shoulder length degree H2 ", right section of pressure shoulder length degree H3 "=jackshaft forging right-hand member weight/D5;
3) forging blank stage casing is forged to diameter D2 × length H2, chop to fall pincers handle;
4) die forging is carried out to left section of forging blank, mould comprises anvil and counterdie, counterdie has the die cavity of diameter D1 × length H1, upper anvil comprises two relatively spaced working faces in the same plane, between two working faces, minimum spacing is D2, and be placed in counterdie die cavity by left for forging blank section, stage casing is between two working faces, upper left section of anvil spinning forging blank is to diameter D1 × length H1
Die forging is carried out to right section of forging blank, mould comprises anvil and counterdie, counterdie has the die cavity of diameter D3 × length H3, upper anvil comprises two relatively spaced working faces in the same plane, between two working faces, minimum spacing is D2, be placed in counterdie die cavity by right for forging blank section, stage casing is between two working faces, and upper right section of anvil spinning forging blank is to diameter D3 × length H3.
The above-mentioned forming technology being applicable to jackshaft forging, for the left section die of forging blank, the shape of upper anvil is the rectangle frame that following middle disconnects, and disconnection spacing is D2, and following lower surface is working face.
The above-mentioned forming technology being applicable to jackshaft forging, for the right section die of forging blank, the shape of upper anvil is the rectangle frame that following middle disconnects, and disconnection spacing is D2, and following lower surface is working face.
Stage casing pressure shoulder length degree H2 is determined according to anvil block thickness W ", " > W, object makes anvil block can extrude forging stage casing to H2, namely carries out step 3)." calculate diameter D5; D5 < D1; D5 < D3; namely left section of forging blank all needs to carry out jumping-up process with right section; adopt particular manufacturing craft by left for forging blank section and right section of jumping-up according to jackshaft forging stage casing weight and stage casing pressure shoulder length degree H2, complete jackshaft forging and be shaped.Compare with existing forming technology, without the need to additionally increasing forge weight in forging process of the present invention, consumable material is few, also just reduces machining amount, shortens machining time, improves the efficiency that comes into force, and reduces production process consumption.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in more detail:
Fig. 1 is jackshaft forging structural representation.
Fig. 2 cannot carry out forging schematic diagram again for carry out pressure shoulder according to H2 ' after.
Fig. 3 is pressure of the present invention shoulder schematic diagram.
Fig. 4 is the schematic diagram after stage casing is shaped.
Fig. 5 is the schematic diagram of counterdie.
Fig. 6 is the schematic diagram of upper anvil.
Fig. 7 is the top view of Fig. 6.
Fig. 8 is the side view of Fig. 6.
Fig. 9 is for carrying out the schematic diagram of die forging to left section of forging blank (right section).
In figure: 1 anvil block, 2 pincers handles.
Detailed description of the invention
As shown in Fig. 3 to Fig. 9, be applicable to a forming technology for jackshaft forging, jackshaft forging is three stage structure, is left section in turn, stage casing and right section, left section of size diameter D1 × length H1, stage casing size diameter D2 × length H2, right section of size diameter D3 × length H3, D1 >=D3 > D2, H1 < H2, H3 < H2, concrete steps are as follows
1) steel ingot is swaged into the forging blank of diameter D5, D5=jackshaft forging stage casing weight/stage casing pressure shoulder length degree H2 ", stage casing pressure shoulder length degree H2 " > anvil block 1 thickness W,
2) carry out pressure shoulder operation, follow weight conservation principle, left section of pressure shoulder length degree H1 "=jackshaft forging left end weight/D5, stage casing pressure shoulder length degree H2 ", right section of pressure shoulder length degree H3 "=jackshaft forging right-hand member weight/D5;
3) forging blank stage casing is forged to diameter D2 × length H2, chop to fall pincers 2;
4) die forging is carried out to left section of forging blank, mould comprises anvil and counterdie, counterdie has the die cavity of diameter D1 × length H1, upper anvil comprises two relatively spaced working faces in the same plane, between two working faces, minimum spacing is D2, and be placed in counterdie die cavity by left for forging blank section, stage casing is between two working faces, upper left section of anvil spinning forging blank is to diameter D1 × length H1
Die forging is carried out to right section of forging blank, mould comprises anvil and counterdie, counterdie has the die cavity of diameter D3 × length H3, upper anvil comprises two relatively spaced working faces in the same plane, between two working faces, minimum spacing is D2, be placed in counterdie die cavity by right for forging blank section, stage casing is between two working faces, and upper right section of anvil spinning forging blank is to diameter D3 × length H3.
For the left section die of forging blank, the shape of upper anvil is the rectangle frame that following middle disconnects, and disconnection spacing is D2, and following lower surface is working face.
For the right section die of forging blank, the shape of upper anvil is the rectangle frame that following middle disconnects, and disconnection spacing is D2, and following lower surface is working face.

Claims (3)

1. one kind is applicable to the forming technology of jackshaft forging, jackshaft forging is three stage structure, be left section in turn, stage casing and right section, left section of size diameter D1 × length H1, stage casing size diameter D2 × length H2, right section of size diameter D3 × length H3, D1 >=D3 > D2, H1 < H2, H3 < H2, it is characterized in that: concrete steps are as follows
1) steel ingot is swaged into the forging blank of diameter D5, D5=jackshaft forging stage casing weight/stage casing pressure shoulder length degree H2 ", stage casing pressure shoulder length degree H2 " > anvil block thickness W,
2) carry out pressure shoulder operation, follow weight conservation principle, left section of pressure shoulder length degree H1 "=jackshaft forging left end weight/D5, stage casing pressure shoulder length degree H2 ", right section of pressure shoulder length degree H3 "=jackshaft forging right-hand member weight/D5;
3) forging blank stage casing is forged to diameter D2 × length H2, chop to fall pincers handle;
4) die forging is carried out to left section of forging blank, mould comprises anvil and counterdie, counterdie has the die cavity of diameter D1 × length H1, upper anvil comprises two relatively spaced working faces in the same plane, between two working faces, minimum spacing is D2, and be placed in counterdie die cavity by left for forging blank section, stage casing is between two working faces, upper left section of anvil spinning forging blank is to diameter D1 × length H1
Die forging is carried out to right section of forging blank, mould comprises anvil and counterdie, counterdie has the die cavity of diameter D3 × length H3, upper anvil comprises two relatively spaced working faces in the same plane, between two working faces, minimum spacing is D2, be placed in counterdie die cavity by right for forging blank section, stage casing is between two working faces, and upper right section of anvil spinning forging blank is to diameter D3 × length H3.
2. the forming technology being applicable to jackshaft forging according to claim 1, is characterized in that: for the left section die of forging blank, and the shape of upper anvil is the rectangle frame that following middle disconnects, and disconnection spacing is D2, and following lower surface is working face.
3. the forming technology being applicable to jackshaft forging according to claim 1, is characterized in that: for the right section die of forging blank, and the shape of upper anvil is the rectangle frame that following middle disconnects, and disconnection spacing is D2, and following lower surface is working face.
CN201410617294.2A 2014-11-06 2014-11-06 A kind of forming technology being applicable to jackshaft forging Active CN104368745B (en)

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CN106141067B (en) * 2016-07-11 2018-12-14 宝钢特钢有限公司 A kind of production method of dumb-bell shape Shaft of Titanium Alloy forging

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SU1486247A1 (en) * 1987-07-20 1989-06-15 Valerij A Tyurin Method of forging stepped-diameter shafts ,particularly, with recess
JP4879878B2 (en) * 2005-01-31 2012-02-22 昭和電工株式会社 Upsetting method and upsetting apparatus
KR100810103B1 (en) * 2006-09-20 2008-03-06 맹혁재 Forging method of decreasing diameter type product
CN102039364B (en) * 2010-11-12 2015-07-22 无锡宏达重型锻压有限公司 Shaping process of fan shaft
CN102343413B (en) * 2011-07-21 2012-11-14 南京迪威尔高端制造股份有限公司 Stepped shaft forging method in free forging
CN103920846B (en) * 2014-04-14 2016-01-27 攀钢集团江油长城特殊钢有限公司 A kind of high temperature alloy Step Shaft radial forging method

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Denomination of invention: Forming technology applicable to intermediate shaft type forge piece

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