CN103990748A - Pull rivet pin manufacturing method and die - Google Patents
Pull rivet pin manufacturing method and die Download PDFInfo
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- CN103990748A CN103990748A CN201410232307.4A CN201410232307A CN103990748A CN 103990748 A CN103990748 A CN 103990748A CN 201410232307 A CN201410232307 A CN 201410232307A CN 103990748 A CN103990748 A CN 103990748A
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Abstract
The invention discloses a pull rivet pin manufacturing method and a die. The pull rivet pin manufacturing method comprises the first step of blanking; the second step of rough forging, wherein a polish rod section preformed part and a tooth-profile pitch diameter preformed part are formed; the third step of finish forging, wherein a cap head, a polish rod section, a tooth-profile pitch diameter section performed part are formed; the fourth step of machining a tail tooth pitch diameter section; the fifth step of rolling, wherein a tooth profile and the tail tooth pitch diameter section are rolled into the tooth profile and a tail tooth; the last step of obtaining a finished pull rivet pin. The die is provided with a rough forging die and a finish forging die. A method for determining a lower die inner hole size of the two dies and a method for designing and optimizing the size of inner holes of the two dies with three specifications are provided. According to the method, pull rivet pin rough forging and finish forging are integrally performed, and product quality instability and machining complexity caused by machining in existing procedures are avoided. The material utilization ratio is improved to 90 percent from 70 percent. The production tissue density is high, and mechanical performance is high. The pattern draft of an inner hole of a first lower die in rough forging ranges from 0.06 degree to 0.09 degree, the semi-finished rough forging product is normally separated from a die cavity, it is guaranteed that the rough forging and finish forging can be normally switched, and the product quality is stable. The method can be used for integrally performing warm forging and hole shrinking on the pull rivet pin or other similar connecting piece.
Description
(1) technical field: the present invention relates to a kind of staking pin warm forging machine-shaping technology, belong to the forging class (B21J) of connector class (E05C) and metal.
(2) background technology:
See Fig. 1, staking pin finished product M is made up of cap head 1, polished rod section 2, straight tooth section 3 and tail tooth section 4.Existing staking pin product is generally used for the occasion of riveted joint, and staking pin M, collar A and packing ring D are by fixing to horseshoe type part B and connected plate C riveted joint.There is anti-loose anti-theft feature.
Traditional staking pin preparation method, step is as follows: a 1) station blanking: see Figure 14, selecting blank shape is traditional cylinder 5n, its diameter of phi
5nwith staking pin polished rod diameter of phi
2unanimously.According to mach processing capacity and three station semi-finished product volumes, determine the cutting length L of different model product
5n.
2) two station machine processing: see Figure 15, be machined to type after blanking, become and have the pre-type 6 of polished rod section
2n, the straight pre-type 6 of tooth central diameter section
3n, the pre-type 6 of tail tooth central diameter section
4ntradition two station semi-finished product 6n.
3) three stations are forged cap head: see Figure 15, the top 6.1n in traditional two station semi-finished product 6n is carried out to local heat (heating-up temperature is lower than 750 DEG C); See Figure 17, the tradition two station semi-finished product 6n of clamping local heat put into traditional the first counterdie 10
1nin die cavity.See Figure 18, traditional patrix 10
0nmove downward and carry out upsetting tradition two station semi-finished product 6n.See Figure 19, cap head upsetting moulding.By conventional module 10 in traditional counterdie endoporus
5nlower forging force is delivered to the forging and stamping platform 10 of traditional counterdie bottom surface
7n.See Figure 20, after the moulding of cap head, be arranged on the traditional thimble 10 on warm forging lathe by control
6n, along pushing up traditional cushion block 10 on traditional counterdie endoporus
5n, have three station semi-finished product 7n of cap head upwards to eject tradition.
4) roll extrusion: clamping out tradition has three station semi-finished product 7n of cap head, sees Figure 16, traditional three station semi-finished product 7n have cap head 1, polished rod section 2, straight tooth central diameter section 7.3n and tail tooth central diameter section 7.4n.Finally traditional three station semi-finished product 7 are placed on to roll extrusion on roller press, straight tooth central diameter section are rolled out to tooth form and tail tooth central diameter section rolls out tail tooth, become have cap head 1, the staking pin finished product M (seeing Fig. 1) of polished rod section 2, straight tooth section 3 and tail tooth section 4.
The traditional moulds 10n of tradition moulding process forms as follows: see Figure 17-Figure 20:
1. traditional patrix 10
0n.2. there is first time film 10 of tradition of external mold and internal mold
1n.2. there is second time film 10 of tradition of external mold and internal mold
2n.3. the 3rd time film 10 of a tradition
3n.4. descend the traditional cushion block 10 that has transmission power in film endoporus
5nwith thimble 10
6n(seeing Figure 20).
There are the following problems for traditional staking pin preparation method: 1), owing to will carry out two station machine processing between a station blanking and two stations of three station upsetting caps, make like this procedure of processing loaded down with trivial details.2) utilization rate of raw materials is low: because there are two station machine processing, process semi-finished product, diameter gap is large, consumes a large amount of materials.3) machined efficiency is low.4) because operator's the technology property of there are differences, therefore machined precision is subject to the impact of operator's technological disparity, and staking pin compact dimensions is added by machine easily and the impact of human factor, causes the stability of product quality to be protected.
(3) summary of the invention
Staking pin preparation method provided by the invention and mould, solve exactly traditional staking pin preparation method and have the problems such as procedure of processing is loaded down with trivial details, utilization rate of raw materials is low, machined efficiency is low, the stability of product quality cannot be protected.
Technical scheme is as follows:
Staking pin preparation method, is characterized in that, comprises the steps:
1) blanking: selecting blank shape is cylinder 5, and cylinder diameter Φ 5 should be staking pin polished rod diameter of phi
20.95～0.972 times; Again according to the finish forge semi-finished product 7 volume U after warm forging moulding
7determine cylinder length
2) rough forge: 1. the rough forge counterdie on warm forging lathe, finish forge counterdie are carried out to preheating with liquefied petroleum gas simultaneously, the time is in 30min left and right; Cylinder is put into the heating of induction heater entirety, heating-up temperature is lower than 750 DEG C simultaneously; Then to spraying into the appropriate graphite aqueous solution in the die cavity of rough forge counterdie, die cavity is lubricated; Finally clamp cylinder and put into rough forge the 1st counterdie endoporus of rough forge mould; 2. drive rough forge patrix to move downward and carry out upsetting, by the rough forge cushion block in rough forge counterdie endoporus, upsetting downforce is passed to the rough forge platform of rough forge counterdie bottom surface; Cylinder is become the rough forge semi-finished product 6 of the pre-type of polished rod section and the pre-type of tooth form central diameter section; 3. upwards rollback of rough forge patrix, is arranged on the rough forge thimble on warm forging lathe by control, along top rough forge cushion block on thick satin counterdie endoporus, thick satin semi-finished product is upwards ejected.3) finish forge: 1. to spraying into the appropriate graphite aqueous solution in the die cavity of finish forge counterdie, die cavity is lubricated; Then rough forge semi-finished product are clamped in rough forge the 1st counterdie finish forge the 1st and the 2nd counterdie endoporus of finish forge mould; 2. drive finish forge patrix to move downward and carry out upsetting; By the finish forge cushion block in finish forge counterdie endoporus, upsetting downforce is passed to finish forge counterdie bottom surface finish forge platform; Become have cap head 1, the finish forge semi-finished product 7 of polished rod section 2, the pre-shape 73 of tooth form central diameter section; 3. upwards rollback of finish forge patrix; Be arranged on the finish forge thimble on warm forging lathe by control, along top finish forge cushion block on smart satin counterdie endoporus, smart satin semi-finished product upwards ejected.4) four station machine processing: clamping is taken out finish forge semi-finished product and is cooled to after normal temperature, to the pre-shape 7 of tooth form central diameter section
3turning machine processing is carried out in lower end, processes tail tooth central diameter section 8
4, become have cap head 1, polished rod section 2, tooth form central diameter section 8
3with tail tooth central diameter section 8
4four station machines processing semi-finished product 8.5) roll extrusion: on rolled thread lathe, four station machines are processed to tooth form central diameter section 8 in semi-finished product 8
3roll out tooth form, become tooth form section; By tail tooth central diameter section 8
4roll out tail tooth, become tail tooth section; Finally become the staking pin finished product M of designing requirement.
Make by above-mentioned staking pin preparation method the mould that product need provide, it is characterized in that:
1) on warm forging lathe, be provided with the mould of rough forge mould and two stations of finish forge mould.2) rough forge mould comprises: 1. rough forge patrix: rushing rod and rushing rod cover of being fixed by both forms; 2. described rough forge counterdie is provided with the rough forge that has internal mold and external mold the 1st counterdie from top to bottom, rough forge the 2nd counterdie that has internal mold and external mold, rough forge the 3rd counterdie and rough forge the 4th counterdie; 3. the large endoporus nominal diameter of rough forge the 1st counterdie is than the large 0.5～0.7mm of cylindrical nominal diameter, between the two for being slidably matched; The large endoporus height H of rough forge the 1st counterdie
9.1than cylinder length L
5large 0-5mm; 4. the little endoporus nominal diameter of rough forge the 1st, the 2nd counterdie Φ
9.2with the pre-type diameter of phi of the half-finished tooth form central diameter of rough forge section
6.3identical, between the two for closely cooperating; The little endoporus height H of rough forge the 1st, the 2nd counterdie
9.2be greater than rough forge semi-finished product tooth form central diameter segment length L
6.3; 5. the large endoporus 9 of rough forge the 1st counterdie
1cthe pattern draft K being provided with is 0.06 °～0.09 °.3) finish forge mould comprises: 1. finish forge patrix: be made up of both fixing cap head spill piece and overcoats; 2. described finish forge counterdie is provided with the finish forge that has internal mold and external mold the 1st counterdie from top to bottom, finish forge the 2nd counterdie that has internal mold and external mold, finish forge the 3rd counterdie and finish forge the 4th counterdie; 3. finish forge the 1st counterdie endoporus nominal diameter Φ
10.1with the half-finished polished rod section of finish forge diameter of phi
2identical, between the two for closely cooperating; Finish forge the 1st counterdie endoporus height H
10.1with the half-finished polished rod segment length of finish forge L
2identical; 4. finish forge the 2nd counterdie endoporus nominal diameter Φ
10.2with the pre-type diameter of phi of the half-finished tooth form central diameter of finish forge section
7.3identical, between the two for closely cooperating; Finish forge the 2nd counterdie endoporus height H
10.2be greater than the pre-type length L of finish forge semi-finished product tooth form central diameter section
7.3.
In above-mentioned two mold features, relate to the size design that rough forge and smart satin the 3rd counterdie, the 4th counterdie endoporus and cushion block match, and the size that matches of the rough forge of three kinds of products that provide and smart satin the 1st counterdie, the 2nd counterdie endoporus and staking pin, accompanying drawings in an embodiment.
Beneficial effect of the present invention:
1), due to the continuous warm forging technological process of rough forge, finish forge after employing blanking, make staking pin polished rod section, straight tooth central diameter section and cap moulding for the first time.Solve that to sandwich unstability and the procedure of processing of the product quality that machined brings in the middle of existing technique loaded down with trivial details, greatly improved the stability of product quality and ensured the quality of product.2) adopt rough forge and warm forging moulding process of finish forge, greatly improved the utilization rate of raw materials of staking pin: utilization rate has brought up to 90% by original 70%.Also increased the density of product tissue, improved the mechanical property of product simultaneously.3) in order to ensure that semi-finished product normally shift between two station rough forges and three station finish forges, be provided with at rough forge the 1st counterdie endoporus pattern draft K=0.06 °～0.09 °, make after rough forge moulding, rough forge semi-finished product can with die cavity normal separation, ensure the stability of product quality.4) two lower mould endoporus method for determining dimension provided by the invention and three kinds of specification two mould bore design optimized dimensions, the stability of guarantee product quality.5) start rough forge, finish forge counterdie carry out preheating simultaneously and die cavity is lubricated at thick satin, can extend die life.6) the present invention is for the warm forging undergauge one-shot forming of staking pin or similar connector.
(4) brief description of the drawings:
Fig. 1 staking pin finished product composition, duty and applicable situation schematic diagram.
Shape figure after Fig. 2 blanking: cylinder 5 single-piece figure.
Shape figure after Fig. 3 rough forge: rough forge semi-finished product 6 single-piece figure.
Shape figure after Fig. 4 finish forge: finish forge semi-finished product 7 single-piece figure.
Shape figure after Fig. 5 tetra-station machine processing: staking pin semi-finished product 8 single-piece figure.。
Fig. 6 cylinder 5 is put into rough forge mould 9 and blocker die lamps structure diagram.
Fig. 7 rough forge forging and stamping diagram.
Fig. 8 rough forge has forged and pressed, and rough forge semi-finished product 6 upwards eject diagram.
Fig. 9 rough forge semi-finished product are put into finish forge mould 10 and finish forge mould configuration diagram.
Figure 10 finish forge forging and stamping diagram.
Figure 11 finish forge has forged and pressed, and finish forge semi-finished product 7 upwards eject diagram.
The pattern draft diagram of Figure 12 rough forge the 1st counterdie endoporus.
Figure 13 Figure 12 partial enlarged drawing I.
Shape figure after the one station blanking of Figure 14 traditional handicraft: cylinder 5n single-piece figure.
Shape figure after the two station machine processing of Figure 15 traditional handicraft: traditional two station semi-finished product 6n single-piece figure.
Shape figure after Figure 16 traditional handicraft three station upsetting cap heads: traditional three station semi-finished product 7n single-piece figure.
Figure 17 tradition two station semi-finished product 6n put into traditional moulds 10n and traditional moulds configuration diagram.
Figure 18 traditionally film 100n moves down, and prepares pressure cap head diagram.
Figure 19 is film 100n forging and stamping cap head diagram traditionally.
Figure 20 tradition three station semi-finished product 7n upwards eject.
(5) detailed description of the invention:
The present embodiment staking pin preparation method, comprises the steps:
1) blanking: see Fig. 2, selecting blank shape is cylinder 5.Cylinder diameter Φ
5=0.95～0.972 Φ
2.Φ
2for staking pin polished rod diameter.Generally determine its size by the different model of product.For example: staking pin polished rod diameter of phi
2during for Φ 36mm, cylinder diameter Φ
5=0.972 Φ=35mm.Determine finish forge semi-finished product 7 volume U
7=125075mm
2.Determine cylinder length
2) rough forge: 1. the rough forge counterdie on warm forging lathe, finish forge counterdie are carried out to preheating with liquefied petroleum gas simultaneously, the time is in 30min left and right; Cylinder 5 is put into the heating of induction heater entirety, heating-up temperature is lower than 750 DEG C simultaneously; Then to spraying into the appropriate graphite aqueous solution in the die cavity of rough forge counterdie, die cavity is lubricated; See Fig. 6, after finally clamping heating, cylinder 5 is put into rough forge the 1st counterdie 9 of rough forge mould
1endoporus 9
1cin.2. see Fig. 7, drive rough forge patrix 9
0move downward and carry out upsetting, by the rough forge cushion block 9 in rough forge counterdie endoporus
5upsetting downforce is passed to rough forge counterdie bottom surface rough forge platform 9 by (seeing Fig. 6)
7; Cylinder is become the pre-type 6 of polished rod section
2with the pre-type 6 of tooth form central diameter section
3rough forge semi-finished product 6 (seeing Fig. 3).3. see Fig. 8, rough forge patrix 9
0upwards rollback, is arranged on the rough forge thimble 9 on warm forging lathe by control
6, along pushing up thick satin cushion block 9 on thick satin counterdie endoporus
5, thick satin semi-finished product 6 are upwards ejected.3) finish forge: 1. to spraying into the appropriate graphite aqueous solution in the die cavity of finish forge counterdie, die cavity is lubricated; See Fig. 8, see Fig. 9, by rough forge semi-finished product 6 from rough forge the 1st counterdie 9
1inside be clamped to finish forge the 1st counterdie and the 2nd counterdie endoporus 10 of finish forge mould
1c, 10
2cin.2. see Figure 10, drive finish forge patrix 10
0move downward and carry out upsetting; By the finish forge cushion block 10 in finish forge counterdie endoporus
5upsetting downforce is passed to finish forge counterdie bottom surface finish forge platform 10
7; Be formed with cap head 1, polished rod section 2, the pre-shape 7 of tooth form central diameter section
3finish forge semi-finished product 7 (seeing Fig. 4).3. see Figure 11, finish forge patrix 10
0upwards rollback; Be arranged on the finish forge thimble 10 on warm forging lathe by control
6, along top finish forge cushion block 10 on smart satin counterdie endoporus
5, smart satin semi-finished product 7 are upwards ejected.4) four station machine processing: see Figure 11, finish forge semi-finished product 7 are taken out in clamping, are cooled to after normal temperature until finish forge semi-finished product, see Fig. 4, Fig. 5, to the pre-shape 7 of tooth form central diameter section
3turning machine processing is carried out in lower end, processes tail tooth central diameter section 8
4, become have cap head 1, polished rod section 2, tooth form central diameter section 8
3with tail tooth central diameter section 8
4four station machines processing semi-finished product 8.5) roll extrusion: see Fig. 5, Fig. 1 processes tooth form central diameter section 8 in semi-finished product 8 by four station machines on rolled thread lathe
3roll out tooth form, become tooth form section 3; By tail tooth central diameter section 8
4roll out tail tooth, become tail tooth section 4; Finally become the staking pin finished product M of designing requirement.
Make by above-mentioned the present embodiment staking pin preparation method the mould that product need provide, comprise as follows:
1) on warm forging lathe, be provided with the mould of rough forge mould and two stations of finish forge mould.
2) rough forge mould comprises: 1. see Fig. 6, rough forge patrix 9
0: the rod that rushes of being fixed by both overlaps 9
01with punching rod 9
02composition.Rush excellent diameter identical with cylinder 5.2. see Fig. 6, the rough forge that has internal mold and external mold the 1st counterdie 9 from top to bottom
1, have rough forge the 2nd counterdie 9 of internal mold and external mold
2, rough forge the 3rd counterdie 9
3with rough forge the 4th counterdie 9
4.3. see Fig. 6, see Fig. 2, the large endoporus 9 of rough forge the 1st counterdie
1cnominal diameter Φ
9.1than cylinder 5 diameter of phi
5large 0.5～0.7mm left and right, between the two for being slidably matched, i.e. Φ
9.1=Φ
5+ 0.5～0.7mm.Large endoporus 9
1cheight H
9.1than cylinder length L
5large 0-5mm, i.e. H
9.1=L
5+ 0-5mm, also can be written as:
4. see Fig. 6, Fig. 3, the little endoporus 9 of rough forge the 1st, the 2nd counterdie
2cnominal diameter Φ
9.2the pre-type 6 of tooth form central diameter section with rough forge semi-finished product 6
3diameter of phi
6.3identical, between the two for closely cooperating, i.e. Φ
9.2=Φ
6.3.See Fig. 7, see Fig. 3, the little endoporus 9 of rough forge the 1st, the 2nd counterdie
2cheight H
9.2be greater than rough forge semi-finished product 6 tooth form central diameter sections 6
3height L
6.3, i.e. H
9.2>L
6.3.5. see Fig. 6, see Figure 12, Figure 13, the large endoporus 9 of rough forge the 1st counterdie
1cthe pattern draft K being provided with is 0.06～0.09 °.In product specification C in table 1, staking pin polished rod diameter of phi
2when=36mm, see Figure 12, at rough forge the 1st counterdie 9
1large endoporus 9
1cmiddle maximum hole depth H
9.1=cylinder length L
5=130mm place, aperture Φ
under=35.68mm; At hole depth=L
6.2place=60mm place (length L
6.2see Fig. 3), aperture Φ
in=35.73mm; In porch, hole, aperture Φ
on=35.85mm.Form like this pattern draft K=0.06～0.09 °.When corresponding staking pin (seeing Fig. 1) product three kinds of model A, B, C are provided in table 1, the relevant design size of above-mentioned rough forge mould: Φ
on, Φ
in, Φ
under, Φ
9.1, H
9.1, Φ
9.2, H
9.2.
3) finish forge mould comprises: 1. see Fig. 9, finish forge patrix 10
0: by both fixing cap head spill pieces 10
02with overcoat 10
01composition.2. see Fig. 9, be provided with the finish forge that has internal mold and external mold the 1st counterdie 10 from top to bottom
1, have finish forge the 2nd counterdie 10 of internal mold and external mold
2, finish forge the 3rd counterdie 10
3with finish forge the 4th counterdie 10
4.3. see Figure 10, Fig. 4, finish forge the 1st counterdie endoporus nominal diameter Φ
10.1polished rod section 2 diameter of phi with finish forge semi-finished product 7
2(Φ
2see Fig. 4) identical, between the two for closely cooperating, i.e. Φ
10.1=Φ
2.Finish forge the 1st counterdie endoporus height H
10.1polished rod segment length L with finish forge semi-finished product 7
2(L
2see Fig. 4) identical, i.e. H
10.1=L
2.4. see Figure 10, Fig. 4, finish forge the 2nd counterdie endoporus 10
2cnominal diameter Φ
10.2the pre-type 7 of tooth form central diameter section with finish forge semi-finished product 7
3diameter of phi
7.3identical, between the two for closely cooperating, i.e. Φ
10.2=Φ
7.3.Finish forge the 2nd counterdie endoporus height H
10.2be greater than the tooth form central diameter section 7 of finish forge semi-finished product 7
3length L
7.3, i.e. H
10.2>L
7.3.When corresponding staking pin (seeing Fig. 1) product three kinds of model A, B, C are provided in table 1, the relevant design size of above-mentioned finish forge mould: Φ
10.1, H
10.1, Φ
10.2, H
10.2.
In sum, the planform of above-mentioned rough forge and finish forge mould the first and second counterdie die cavitys, according to the design of the each station semi-finished product of the present invention shape, just can realize a undergauge moulding of staking pin.
Table 1 mould relevant design dimensional units millimeter
See Fig. 6, rough forge the 3rd counterdie 9
3endoporus aperture Φ
9.3little endoporus 9 with rough forge the 1st, the 2nd counterdie
2cnominal diameter Φ
9.2identical.Rough forge the 4th counterdie 9
4endoporus aperture Φ
9.4be greater than rough forge the 3rd counterdie 9
3endoporus aperture Φ
9.3.Rough forge cushion block 9
5upper end nominal diameter and little endoporus 9
2cnominal diameter Φ
9.2identical, between the two for being slidably matched; Rough forge cushion block 9
5lower end nominal diameter and rough forge the 4th counterdie 9
4endoporus aperture Φ
9.4identical, between the two for being slidably matched.
See Fig. 9, finish forge the 3rd counterdie 10
3endoporus aperture Φ
10.3be greater than finish forge the 2nd counterdie endoporus 10
2cnominal diameter Φ
10.2.Finish forge the 4th counterdie 10
4endoporus aperture Φ
10.4with finish forge the 3rd counterdie 10
3endoporus aperture Φ
10.3identical.Finish forge cushion block 10
5upper end nominal diameter and little endoporus 10
2cnominal diameter Φ
10.2identical, between the two for being slidably matched; Finish forge cushion block 10
5lower end nominal diameter and finish forge the 4th counterdie 10
4endoporus aperture Φ
10.4identical, between the two for being slidably matched.
Above-mentioned rough forge the 3rd counterdie, the 4th counterdie endoporus and rough forge cushion block 9
5the size design matching, and above-mentioned finish forge the 3rd counterdie, the 4th counterdie endoporus and finish forge cushion block 10
5the size design matching all with existing traditional the 2nd counterdie, the 3rd counterdie endoporus and traditional cushion block 10n
5the size design matching is similar, and the relative motion of all cushion blocks in counterdie endoporus and thimble move upward all identically, no longer describe at this.
Claims (3)
1. staking pin preparation method, is characterized in that, comprises the steps:
1) blanking: selection blank shape is cylinder (5), cylinder diameter Φ 5 should be staking pin polished rod diameter of phi
20.95～0.972 times; Again according to finish forge semi-finished product (7) the volume U after warm forging moulding
7determine cylinder length
2) rough forge:
1. the rough forge counterdie on warm forging lathe, finish forge counterdie are carried out to preheating with liquefied petroleum gas simultaneously, the time is in 30min left and right; Cylinder (5) is put into the heating of induction heater entirety, heating-up temperature is lower than 750 DEG C simultaneously; Then to spraying into the appropriate graphite aqueous solution in the die cavity of rough forge counterdie, die cavity is lubricated; Finally clamp cylinder and put into rough forge the 1st counterdie endoporus (9 of rough forge mould
1c) in; 2. drive rough forge patrix (9
0) move downward and carry out upsetting, by the rough forge cushion block (9 in rough forge counterdie endoporus
5) upsetting downforce is passed to the rough forge platform (9 of rough forge counterdie bottom surface
7); Cylinder is become the pre-type (6 of polished rod section
2) and the pre-type (6 of tooth form central diameter section
3) rough forge semi-finished product (6); 3. upwards rollback of rough forge patrix, is arranged on the rough forge thimble (9 on warm forging lathe by control
6), along top rough forge cushion block (9 on thick satin counterdie endoporus
5), rough forge semi-finished product are upwards ejected;
3) finish forge:
1. to spraying into the appropriate graphite aqueous solution in the die cavity of finish forge counterdie, die cavity is lubricated; Then by rough forge semi-finished product from being clamped to finish forge the 1st and the 2nd counterdie endoporus 10 of finish forge mould in rough forge the 1st counterdie
1c), (10
2c) in; 2. drive finish forge patrix (10
0) move downward and carry out upsetting; By the finish forge cushion block (10 in finish forge counterdie endoporus
5) upsetting downforce is passed to finish forge counterdie bottom surface finish forge platform (10
7); Become have cap head (1), polished rod section (2), the pre-shape (7 of tooth form central diameter section
3) finish forge semi-finished product (7); 3. upwards rollback of finish forge patrix; Be arranged on the finish forge thimble (10 on warm forging lathe by control
6), along top finish forge cushion block (10 on finish forge counterdie endoporus
5), finish forge semi-finished product are upwards ejected;
4) four station machine processing: clamping is taken out finish forge semi-finished product and is cooled to after normal temperature, to the pre-shape (7 of tooth form central diameter section
3) lower end carries out turning machine processing, processes tail tooth central diameter section (8
4), become have cap head (1), polished rod section (2), tooth form central diameter section (8
3) and tail tooth central diameter section (8
4) four station machines processing semi-finished product (8);
5) roll extrusion: on rolled thread lathe, four station machines are processed to tooth form central diameter section (8 in semi-finished product
3) roll out tooth form, become tooth form section (3); By tail tooth central diameter section (8
4) roll out tail tooth, become tail tooth section (4); Finally become the staking pin finished product M of designing requirement.
2. make by claim 1 staking pin preparation method the mould that product need provide, it is characterized in that:
1) on warm forging lathe, be provided with the mould of rough forge mould and two stations of finish forge mould;
2) rough forge mould comprises: 1. rough forge patrix: rushing rod and rushing rod cover of being fixed by both forms; 2. described rough forge counterdie is provided with the rough forge that has internal mold and external mold the 1st counterdie (9 from top to bottom
1), have rough forge the 2nd counterdie (9 of internal mold and external mold
2), rough forge the 3rd counterdie (9
3) and rough forge the 4th counterdie (9
4); 3. the large endoporus (9 of rough forge the 1st counterdie
1c) nominal diameter is than the large 0.5～0.7mm of cylindrical nominal diameter Φ 5, between the two for being slidably matched; The large endoporus height of rough forge the 1st counterdie (H
9.1) than cylinder length (L
5) large 0-5mm; 4. the little endoporus nominal diameter of rough forge the 1st, the 2nd counterdie (Φ
9.2) with the pre-type (6 of tooth form central diameter section of rough forge semi-finished product (6)
3) diameter (Φ
6.3) identical, between the two for closely cooperating; The little endoporus height of rough forge the 1st, the 2nd counterdie (H
9.2) be greater than rough forge semi-finished product tooth form central diameter segment length (L
6.3); 5. the large endoporus (9 of rough forge the 1st counterdie
1c) the pattern draft K that is provided with is 0.06 °～0.09 °;
3) finish forge mould comprises: 1. finish forge patrix: be made up of both fixing cap head spill piece and overcoats; 2. described finish forge counterdie is provided with the finish forge that has internal mold and external mold the 1st counterdie (10 from top to bottom
1), have finish forge the 2nd counterdie (10 of internal mold and external mold
2), finish forge the 3rd counterdie (10
3) and finish forge the 4th counterdie (10
4); 3. finish forge the 1st counterdie endoporus (10
1c) nominal diameter (Φ
10.1) with polished rod section (2) diameter (Φ of finish forge semi-finished product (7)
2) identical, between the two for closely cooperating; Finish forge the 1st counterdie endoporus height (H
10.1) and the half-finished polished rod segment length of finish forge (L
2) identical; 4. finish forge the 2nd counterdie endoporus (10
2c) nominal diameter (Φ
10.2) and the pre-type (7 of the half-finished tooth form central diameter of finish forge section
3) diameter (Φ
7.3) identical, between the two for closely cooperating; Finish forge the 2nd counterdie endoporus height (H
10.2) be greater than the length (L of the pre-type of finish forge semi-finished product tooth form central diameter section
7.3).
3. by mould claimed in claim 2, it is characterized in that:
Rough forge the 3rd counterdie (9
3) endoporus aperture (Φ
9.3) with the little endoporus (9 of rough forge the 1st, the 2nd counterdie
2c) aperture (Φ
9.2) identical; Rough forge the 4th counterdie (9
4) endoporus aperture (Φ
9.4) be greater than rough forge (3) counterdie endoporus aperture (Φ
9.3); Rough forge cushion block (9
5) upper end nominal diameter and little endoporus (9
2c) nominal diameter (Φ
9.2) identical, between the two for being slidably matched; Rough forge cushion block (9
5) lower end nominal diameter and rough forge the 4th counterdie (9
4) endoporus aperture (Φ
9.4) identical, between the two for being slidably matched;
Finish forge the 3rd counterdie (10
3) endoporus aperture (Φ
10.3) be greater than finish forge the 2nd counterdie endoporus (10
2c) nominal diameter (Φ
10.2); Finish forge the 4th counterdie (10
4) endoporus aperture (Φ
10.4) and finish forge the 3rd counterdie (10
3) endoporus aperture (Φ
10.3) identical; Finish forge cushion block (10
5) upper end nominal diameter and little endoporus (10
2c) nominal diameter (Φ
10.2) identical, between the two for being slidably matched; Finish forge cushion block (10
5) lower end nominal diameter and finish forge the 4th counterdie (10
4) endoporus aperture (Φ
10.4) identical, between the two for being slidably matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410232307.4A CN103990748B (en) | 2014-05-28 | 2014-05-28 | Staking pin manufacture method and mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410232307.4A CN103990748B (en) | 2014-05-28 | 2014-05-28 | Staking pin manufacture method and mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103990748A true CN103990748A (en) | 2014-08-20 |
| CN103990748B CN103990748B (en) | 2016-06-29 |
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ID=51305223
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410232307.4A Active CN103990748B (en) | 2014-05-28 | 2014-05-28 | Staking pin manufacture method and mould |
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| Country | Link |
|---|---|
| CN (1) | CN103990748B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399845A (en) * | 2014-11-03 | 2015-03-11 | 苏州工业园区新凯精密五金有限公司 | Pin shaft cold heading forming process and cutting mold structure of pin shaft cold heading forming process |
| CN114074168A (en) * | 2020-08-19 | 2022-02-22 | 宾科汽车紧固件（昆山）有限公司 | Bolt forming method and cold heading device |
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| JPH04371335A (en) * | 1991-06-20 | 1992-12-24 | Komatsu Ltd | Method and die unit for forging spiral bevel gear |
| JP2002224790A (en) * | 2001-02-02 | 2002-08-13 | Minebea Co Ltd | Method for manufacturing wedge member |
| JP3709327B2 (en) * | 2000-03-24 | 2005-10-26 | 本田技研工業株式会社 | Forging equipment |
| CN202212515U (en) * | 2011-08-04 | 2012-05-09 | 诸城市义和车桥有限公司 | Warm extrusion die for ball pin |
| CN202431688U (en) * | 2011-11-25 | 2012-09-12 | 南车眉山车辆有限公司 | Novel pull riveting pin |
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2014
- 2014-05-28 CN CN201410232307.4A patent/CN103990748B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1442987A (en) * | 1972-09-20 | 1976-07-21 | Gkn Bolts Nuts Ltd | Method of making headed fasteners |
| JPH04371335A (en) * | 1991-06-20 | 1992-12-24 | Komatsu Ltd | Method and die unit for forging spiral bevel gear |
| JP3709327B2 (en) * | 2000-03-24 | 2005-10-26 | 本田技研工業株式会社 | Forging equipment |
| JP2002224790A (en) * | 2001-02-02 | 2002-08-13 | Minebea Co Ltd | Method for manufacturing wedge member |
| CN202212515U (en) * | 2011-08-04 | 2012-05-09 | 诸城市义和车桥有限公司 | Warm extrusion die for ball pin |
| CN202431688U (en) * | 2011-11-25 | 2012-09-12 | 南车眉山车辆有限公司 | Novel pull riveting pin |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399845A (en) * | 2014-11-03 | 2015-03-11 | 苏州工业园区新凯精密五金有限公司 | Pin shaft cold heading forming process and cutting mold structure of pin shaft cold heading forming process |
| CN114074168A (en) * | 2020-08-19 | 2022-02-22 | 宾科汽车紧固件（昆山）有限公司 | Bolt forming method and cold heading device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103990748B (en) | 2016-06-29 |
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Address after: 620032, No. two, 821, Science Park, Dongpo District, Sichuan, Meishan Patentee after: Meishan Zhongche fastener Technology Co. Ltd. Address before: 620032, No. two, 821, Science Park, Dongpo District, Sichuan, Meishan Patentee before: Meishan CSR Fastener Science&technology Co., Ltd. |