CN104668324A - Forming method for double-end stud blank - Google Patents
Forming method for double-end stud blank Download PDFInfo
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- CN104668324A CN104668324A CN201510069300.XA CN201510069300A CN104668324A CN 104668324 A CN104668324 A CN 104668324A CN 201510069300 A CN201510069300 A CN 201510069300A CN 104668324 A CN104668324 A CN 104668324A
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- blank
- die
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- stud blank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/24—Making other particular articles nuts or like thread-engaging members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a forming method for a double-end stud blank. The forming method sequentially comprises the following steps: stamping a stud blank to form an outer hexagonal blank section and a conical section by virtue of a first stamping die; stamping the stud blank to sequentially form a fourth stud blank section, a third conical stud blank section, a cylindrical section, a second micro-conical stud blank, a threaded stud blank section, an outer hexagonal blank section and transition sections at corresponding positions from top to bottom by virtue of a second stamping die; further stamping the stud blank to sequentially form a fourth stud blank section, a third stud blank section, a cylindrical section with the same upper and lower external diameters and the greatest stud blank external diameter, a second stud blank section, a first stud blank section, an outer hexagonal section and transition sections meeting set requirements at corresponding positions from top to bottom by virtue of a third stamping die, namely forming the double-end stud blank meeting the set requirements. The forming method has the advantages that reducing and expanding procedures are adopted for gradually changing the shapes of parts, so that machining requirements are met, the utilization rate of materials is further increased, and the machining cost is lower; the procedures are simpler.
Description
Technical field
The present invention relates to a kind of method of processing parts, especially a kind of studs blank forming method.
Background technology
Existing a kind of application number is that CN201110341854.2 name is called that the Chinese invention patent of " titanium alloy fastening piece cold heading forming process " discloses a kind of titanium alloy fastening piece cold heading forming process, first choose the titanium material that Brinell hardness is less than the wire coils state of 100, little passage technique is adopted when drawing, namely the distortion after each annealing increases a passage, and each passage processing capacity is 50% of last passage processing capacity; What drawing was good coils material feeding high strength multistage cold former, at least made by twice cold-heading molding, and each cold-heading molding deflection is no more than 50%.The application of this invention new technology can improve work efficiency 10-15 doubly, and material use reduces by 50%, make holistic cost decline more than 70%.The titanium securing member of this explained hereafter compares from economic worth, has higher cost performance by than stainless like product, expands several times rapidly by making the application of this product.But its shortcoming is, operation is comparatively complicated, and stock utilization is low, and production cost is high, is difficult to the processing with complicated multiple stage rank axial workpiece, so its method needs to improve.
Prior art is compared, and the invention has the advantages that, process stabilizing is reliable, can complete the processing of complicated multiple stage rank axial workpiece; Adopt the operation of undergauge and expansion, change part external form gradually, both met process requirements, and saved again the utilization rate of material, and made processing cost lower; Operation is simpler, and only part need be placed on assigned address, be shaped through three road Mould Machining, therefore, not only processing effect is high, and adjustment specification is convenient, significantly reduces percent defective, thus provides cost savings further; Further, adopt the mould of swollen bulging process of the present invention, than common diameter reducing process with long more than two to three times of die life, then further cut down finished cost.
Summary of the invention
Technical problem to be solved by this invention provides one can be applied to multiple stage rank Machining of Shaft-type Parts for above-mentioned prior art present situation, and stock utilization is high, operation simple studs blank forming method.
The present invention solves the problems of the technologies described above adopted technical scheme: this studs blank forming method, it is characterized in that: successively by following steps: step one, by the first stamping die to the outer-hexagonal blank section of bottom undergauge striking out setting requirement of stud blank and the conical section of transition, step 2, punching press is carried out by the stud blank of the second stamping die to step one, stud blank is made to form the stud blank four sections of setting requirement from top to bottom successively, the conical stud blank three sections that the little lower outer diameter of top external diameter that external diameter expands is large and the cylindrical section that external diameter expands, the micro-conical stud blank two sections that the large lower outer diameter of top external diameter that external diameter expands is little, stud blank thread segment, outer-hexagonal blank section and relevant position meet the changeover portion that setting requires, step 3, by the 3rd stamping die to the further punching press of stud blank after step 3 processing, the stud blank three sections that the stud blank four sections that the external diameter making stud blank form setting requirement successively from top to bottom expands is identical with upper and lower external diameter, identical and the cylindrical section that stud blank external diameter is the widest of upper and lower external diameter, the stud blank two sections that top and the bottom external diameter is identical, stud blank one section, the outer-hexagonal section be shaped and relevant position meet the changeover portion that setting requires, namely the studs blank that setting requires is configured as.
As improvement, described outer-hexagonal section is lacy outer-hexagonal section, during shaping, bottom the counterdie of the 3rd stamping die outer-hexagonal section die cavity in be designed to padded lace outer-hexagonal die cavity, when the downward punching press of the patrix of the 3rd stamping die, the outer-hexagonal blank section bottom stud blank is squeezed by padded lace outer-hexagonal die cavity and is cut into lacy outer-hexagonal section.
As improvement, described first stamping die comprises upper die and lower die, described patrix can be moved up and down relative to counterdie by driver, described patrix comprises upper die body, the pressing block that can move up and down at upper die body inner chamber and punch rod, described counterdie comprises lower mold body, counterdie forming cavity, the push rod that stamping stud blank can be ejected from counterdie forming cavity is vertically provided with in the bottom of counterdie forming cavity, described push rod to slide up and down in the through hole through lower mold body and to extend the bottom of lower mold body, after counterdie forming cavity put into by stud blank, upper die body moves down under driver drives, drive punch rod extruding stud blank end face that stud blank is moved down by pressing block and enter in counterdie forming cavity, stud blank bottom is made to become the outer-hexagonal blank section of undergauge.
As improvement, described second stamping die comprises stamping die and lower bed die, described upper stamping die can be moved up and down relative to lower bed die by drive unit, described upper stamping die comprises stamping die shell, be placed in the die cavity of stamping die shell bottom, die cavity bottom is the little conical cavity of lower outer diameter large top external diameter, the punching press post that can move up and down is provided with in upper stamping die shell inner chamber, described punching press post lower end is stretched in die cavity, be provided with in described lower bed die and can place the lower bed die cavity that step one processes rear stud blank, be positioned at the thread segment die cavity of the stud blank above lower bed die cavity, the bottom surface of described lower bed die cavity is vertically provided with the knock-pin that stud blank upwards can be ejected from lower bed die cavity, described knock-pin can slide up and down to the bottom of extending lower bed die through the through hole of lower bed die, after die cavity put into by stud blank, upper stamping die moves down under driver drives, extrudes the side of stud blank and end face makes stud blank move down and is configured as the stud blank setting and require by the die cavity of upper stamping die and punching press post.
As improvement, described 3rd stamping die comprises upper die body and lower mold body, described upper die body can be moved up and down relative to lower mold body by drive unit, described upper die body comprises patrix housing, be placed in the mould pressing cavity of patrix lower housing portion, the depression bar that can move up and down is provided with in upper shuttering intracoelomic cavity, described depression bar lower end is stretched in mould pressing cavity, the thread segment shaping die cavity placing the rear stud blank of step 2 processing is provided with in described lower mold body, lower mold body cavity, the bottom of lower mold body cavity is provided with lacy hexagon and squeezes and cut die cavity, the jack-up bar that stud blank upwards can be ejected from lower mold body cavity is vertically provided with under the bottom surface of described lower mold body cavity, described jack-up bar can slide up and down to the bottom of extending lower mold body through the through hole of lower mold body.After mould pressing cavity put into by stud blank, upper die body moves down under driver drives, the side of stud blank is extruded and end face makes stud blank move down by the mould pressing cavity of patrix housing and depression bar, outer-hexagonal blank section bottom stud blank by hexagon squeeze cut die cavity squeeze be cut into lacy outer-hexagonal section, stud blank is molded into the stud blank of standard by the corresponding die cavity of the 3rd stamping die.
As improvement, be respectively arranged with in the bed die shaped cavity of the counterdie in second, third shaped cavity described and the first stamping die in the higher module of corresponding intensity.
Accompanying drawing explanation
Fig. 1 is the studs blank forming trailing flank perspective view of the embodiment of the present invention;
Fig. 2 is the side projection figure of the studs blank of Fig. 1 after the first stamping die processing;
Fig. 3 is the side projection figure of the studs blank of Fig. 2 after the second stamping die processing;
Fig. 4 is the structural representation of the first stamping die producing blank shown in Fig. 2;
Fig. 5 is the structural representation of the second stamping die producing blank shown in Fig. 3;
Fig. 6 is the structural representation of the 3rd stamping die producing blank shown in Fig. 1;
Fig. 7 is the schematic diagram that the first stamping die is in the rear state of blank processing;
Fig. 8 is the schematic diagram that the second stamping die is in the rear state of blank processing;
Fig. 9 is the schematic diagram that the 3rd stamping die is in the rear state of blank processing.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figures 1 to 9, the present embodiment studs blank forming method, successively by following steps: step one, by the outer-hexagonal blank section 51 of bottom undergauge striking out setting requirement and the conical section 511 of transition of the first stamping die 1 pair of stud blank 5, step 2, punching press is carried out by the stud blank 5 of the second stamping die 3 pairs of steps one, the stud blank four section 53 making stud blank 5 form setting from top to bottom successively to require, the conical stud blank three section 531 that the little lower outer diameter of top external diameter that external diameter expands is large and the cylindrical section 532 that external diameter expands, the little micro-conical stud blank of the large lower outer diameter of top external diameter that external diameter expands two section 533, stud blank thread segment 534, outer-hexagonal blank section 51 and relevant position meet the changeover portion that setting requires, described changeover portion comprises the cylindrical section 52 being positioned at stud blank four section of 53 top and contacting mutually with the punching press post 34 of the second stamping die 3, step 3, by stud blank 5 punching press further after the 4 pairs of step 3 processing of the 3rd stamping die, stud blank three section 541, up and down external diameter that the stud blank four section 54 that stud blank 5 is formed from top to bottom successively external diameter that setting requires expands is identical with upper and lower external diameter are identical and the stud blank two section 543 that the cylindrical section 542 that stud blank external diameter is the widest, top and the bottom external diameter are identical, stud blank one section 544, the outer-hexagonal section 545 be shaped and relevant position meet the changeover portion that setting requires, are namely configured as the studs blank that setting requires.Outer-hexagonal section 545 is the outer-hexagonal section of padded lace 50, during shaping, bottom the counterdie of the 3rd stamping die 4 outer-hexagonal section 545 die cavity in be designed to padded lace 50 outer-hexagonal die cavity, when the downward punching press of the patrix of the 3rd stamping die 4, the outer-hexagonal blank section 51 bottom stud blank 5 is squeezed the outer-hexagonal section 545 being cut into padded lace 50 by padded lace outer-hexagonal die cavity.
First stamping die 1 comprises upper die and lower die, described patrix can be moved up and down relative to counterdie by driver, described patrix comprises upper die body 11, the pressing block 12 that can move up and down at upper die body 11 inner chamber and punch rod 15, described counterdie comprises lower mold body 14, counterdie forming cavity 16, the push rod 13 that stamping stud blank 5 can be ejected from counterdie forming cavity is vertically provided with in the bottom of counterdie forming cavity 16, described push rod 13 to slide up and down in the through hole through lower mold body 14 and to extend the bottom of lower mold body 14, after counterdie forming cavity 16 put into by stud blank 5, upper die body 11 moves down under driver drives, drive punch rod 15 to extrude stud blank 5 end face by pressing block 12 stud blank 5 is moved down and enters in counterdie forming cavity 16, stud blank 5 bottom is made to become the outer-hexagonal blank section 51 of undergauge.
Second stamping die 3 comprises stamping die and lower bed die 38, described upper stamping die can be moved up and down relative to lower bed die by drive unit, described upper stamping die comprises stamping die shell 31, be placed in the die cavity 32 of stamping die shell 31 bottom, die cavity 32 bottom is the little conical cavity 33 of lower outer diameter large top external diameter, the punching press post 34 that can move up and down is provided with in upper stamping die shell 31 inner chamber, described punching press post 34 lower end is stretched in die cavity 32, be provided with in described lower bed die 38 and can place the lower bed die cavity 35 that step one processes rear stud blank, be positioned at the thread segment die cavity 36 of the stud blank above lower bed die cavity 35, the bottom surface of described lower bed die cavity 35 is vertically provided with the knock-pin 37 that stud blank 5 upwards can be ejected from lower bed die cavity 35, described knock-pin 37 can slide up and down to the bottom of extending lower bed die 38 through the through hole of lower bed die 38, after die cavity 32 put into by stud blank, upper stamping die moves down under driver drives, extrudes the side of stud blank 5 and end face makes stud blank 5 move down and is configured as the stud blank 5 setting and require by die cavity 32 and the punching press post 34 of upper stamping die.
3rd stamping die 4 comprises upper die body and lower mold body 44, described upper die body can be moved up and down relative to lower mold body 44 by drive unit, described upper die body comprises patrix housing 41, be placed in the mould pressing cavity 42 of patrix housing 41 bottom, the depression bar 43 that can move up and down is provided with in upper shuttering intracoelomic cavity, described depression bar 43 lower end is stretched in mould pressing cavity 42, the thread segment shaping die cavity 48 placing the rear stud blank 5 of step 2 processing is provided with in described lower mold body 44, lower mold body cavity 45, the hexagon that the bottom of lower mold body cavity 45 is provided with padded lace 50 squeezes cuts die cavity 47, the jack-up bar 46 that stud blank 5 upwards can be ejected from lower mold body cavity 45 is vertically provided with under the bottom surface of described lower mold body cavity 45, described jack-up bar 46 can slide up and down to the bottom of extending lower mold body 44 through the through hole of lower mold body 44.After mould pressing cavity 42 put into by stud blank 5, upper die body moves down under driver drives, the side of stud blank 5 is extruded and end face makes stud blank 5 move down by mould pressing cavity 42 and the depression bar 43 of patrix housing 41, outer-hexagonal blank section 51 bottom stud blank 5 is squeezed by hexagon and is cut die cavity 47 and squeeze the stud blank 5 that stud blank to be molded into standard by the corresponding die cavity being cut into outer-hexagonal section the 545, three stamping die 4 of padded lace 50.Be respectively arranged with in the bed die shaped cavity of the counterdie in second, third shaped cavity and the first stamping die in the higher module 2 of corresponding intensity.
Operation principle: first, by the first stamping die to the outer-hexagonal blank section of bottom undergauge striking out setting requirement of stud blank and the conical section of transition; Then, carry out punching press by the stud blank of the second stamping die to step one, the micro-conical stud blank two sections that the large lower outer diameter of top external diameter that the large conical stud blank three sections of the little lower outer diameter of top external diameter that the stud blank four sections making stud blank form setting from top to bottom successively to require, external diameter expand and the cylindrical section that external diameter expands, external diameter expand is little, stud blank thread segment, outer-hexagonal blank section and relevant position meet the changeover portion that setting requires; Then, by the 3rd stamping die to the further punching press of stud blank after step 3 processing, stud blank three sections, up and down external diameter that the stud blank four sections that the stud blank external diameter that formation setting requires successively is from top to bottom expanded is identical with upper and lower external diameter are identical and the outer-hexagonal section of the stud blank two sections that the cylindrical section that stud blank external diameter is the widest, top and the bottom external diameter are identical, stud blank one section, shaping and relevant position meet the changeover portion that setting requires, are namely configured as the studs blank that setting requires.
Claims (6)
1. a studs blank forming method, it is characterized in that: successively by following steps: step one, by the first stamping die (1) to the outer-hexagonal blank section (51) of bottom undergauge striking out setting requirement of stud blank (5) and the conical section (511) of transition, step 2, punching press is carried out by the stud blank (5) of the second stamping die (3) to step one, stud blank (5) is made to form the stud blank four sections (53) of setting requirement from top to bottom successively, the conical stud blank three sections (531) that the little lower outer diameter of top external diameter that external diameter expands is large and the cylindrical section (532) that external diameter expands, the micro-conical stud blank two sections (533) that the large lower outer diameter of top external diameter that external diameter expands is little, stud blank thread segment (534), outer-hexagonal blank section (51) and relevant position meet the changeover portion that setting requires, step 3, by the 3rd stamping die (4) to stud blank (5) punching press further after step 3 processing, the stud blank three sections (541) that the stud blank four sections (54) that the external diameter making stud blank (5) form setting requirement successively from top to bottom expands is identical with upper and lower external diameter, identical and the cylindrical section (542) that stud blank external diameter is the widest of upper and lower external diameter, the stud blank two sections (543) that top and the bottom external diameter is identical, stud blank one section (544), the outer-hexagonal section (545) be shaped and relevant position meet the changeover portion that setting requires, namely the studs blank that setting requires is configured as.
2. studs blank forming method according to claim 1, it is characterized in that: the outer-hexagonal section that described outer-hexagonal section (545) is padded lace (50), during shaping, bottom the counterdie of the 3rd stamping die (4) outer-hexagonal section (545) die cavity in be designed to padded lace (50) outer-hexagonal die cavity, when the downward punching press of the patrix of the 3rd stamping die (4), the outer-hexagonal blank section (51) of stud blank (5) bottom is squeezed the outer-hexagonal section (545) being cut into padded lace (50) by padded lace outer-hexagonal die cavity.
3. studs blank forming method according to claim 1, it is characterized in that: described first stamping die (1) comprises upper die and lower die, described patrix can be moved up and down relative to counterdie by driver, described patrix comprises upper die body (11), the pressing block (12) that can move up and down at upper die body (11) inner chamber and punch rod (15), described counterdie comprises lower mold body (14), counterdie forming cavity (16), the push rod (13) that stamping stud blank (5) can be ejected from counterdie forming cavity is vertically provided with in the bottom of counterdie forming cavity (16), described push rod (13) to slide up and down in the through hole through lower mold body (14) and to extend the bottom of lower mold body (14), after counterdie forming cavity (16) put into by stud blank (5), upper die body (11) moves down under driver drives, driving punch rod (15) to extrude stud blank (5) end face by pressing block (12) makes stud blank (5) move down and enter in counterdie forming cavity (16), stud blank (5) bottom is made to become the outer-hexagonal blank section (51) of undergauge.
4. studs blank forming method according to claim 1, it is characterized in that: described second stamping die (3) comprises stamping die and lower bed die (38), described upper stamping die can be moved up and down relative to lower bed die by drive unit, described upper stamping die comprises stamping die shell (31), be placed in the die cavity (32) of stamping die shell (31) bottom, die cavity (32) bottom is the little conical cavity (33) of lower outer diameter large top external diameter, the punching press post (34) that can move up and down is provided with in upper stamping die shell (31) inner chamber, described punching press post (34) lower end is stretched in die cavity (32), be provided with in described lower bed die (38) and the lower bed die cavity (35) that step one processes rear stud blank can be placed, be positioned at the thread segment die cavity (36) of the stud blank of lower bed die cavity (35) top, the bottom surface of described lower bed die cavity (35) is vertically provided with the knock-pin (37) that stud blank (5) upwards can be ejected from lower bed die cavity (35), described knock-pin (37) can slide up and down to the bottom of extending lower bed die (38) through the through hole of lower bed die (38), after die cavity (32) put into by stud blank, upper stamping die moves down under driver drives, extrudes the side of stud blank (5) and end face makes stud blank (5) move down and be configured as the stud blank (5) setting and require by die cavity (32) and the punching press post (34) of upper stamping die.
5. studs blank forming method according to claim 1, it is characterized in that: described 3rd stamping die (4) comprises upper die body and lower mold body (44), described upper die body can be moved up and down relative to lower mold body (44) by drive unit, described upper die body comprises patrix housing (41), be placed in the mould pressing cavity (42) of patrix housing (41) bottom, the depression bar (43) that can move up and down is provided with in upper shuttering intracoelomic cavity, described depression bar (43) lower end is stretched in mould pressing cavity (42), the thread segment shaping die cavity (48) placing the rear stud blank (5) of step 2 processing is provided with in described lower mold body (44), lower mold body cavity (45), the hexagon that the bottom of lower mold body cavity (45) is provided with padded lace (50) squeezes cuts die cavity (47), the jack-up bar (46) that stud blank (5) upwards can be ejected from lower mold body cavity (45) is vertically provided with under the bottom surface of described lower mold body cavity (45), described jack-up bar (46) can slide up and down to the bottom of extending lower mold body (44) through the through hole of lower mold body (44).After mould pressing cavity (42) put into by stud blank (5), upper die body moves down under driver drives, the side of stud blank (5) is extruded and end face makes stud blank (5) move down by mould pressing cavity (42) and the depression bar (43) of patrix housing (41), the outer-hexagonal blank section (51) of stud blank (5) bottom is squeezed by hexagon and is cut the crowded outer-hexagonal section (545) being cut into padded lace (50) of die cavity (47), and stud blank is molded into the stud blank (5) of standard by the corresponding die cavity of the 3rd stamping die (4).
6. according to described studs blank forming method arbitrary in claim 1 to 5, it is characterized in that: be respectively arranged with in the higher module (2) of corresponding intensity in the bed die shaped cavity of the counterdie in second, third shaped cavity described and the first stamping die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069300.XA CN104668324A (en) | 2015-02-06 | 2015-02-06 | Forming method for double-end stud blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069300.XA CN104668324A (en) | 2015-02-06 | 2015-02-06 | Forming method for double-end stud blank |
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| Publication Number | Publication Date |
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| CN104668324A true CN104668324A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510069300.XA Pending CN104668324A (en) | 2015-02-06 | 2015-02-06 | Forming method for double-end stud blank |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880379A (en) * | 2016-04-06 | 2016-08-24 | 浙江晋吉汽车配件有限公司 | Anti-rotation assembling die for seal bolt |
| CN110052555A (en) * | 2019-05-30 | 2019-07-26 | 东风汽车紧固件有限公司 | A kind of cold forming method and its multi-station mold of interior cubic sleeve nut |
| CN112207221A (en) * | 2020-09-14 | 2021-01-12 | 苏州工业园区君力精工有限公司 | New energy automobile battery pole cold heading forming process |
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| SU810355A1 (en) * | 1979-03-12 | 1981-03-07 | Всесоюзный Научно-Исследовательскийинститут Метизной Промышленности | Method of producing rod-type articles |
| JPS58345A (en) * | 1981-06-23 | 1983-01-05 | Sakamura Kikai Seisakusho:Kk | Manufacture of bolt for clamping temporary frame |
| CN102601240A (en) * | 2012-03-29 | 2012-07-25 | 苏州新凌电炉有限公司 | Dowel screw forming die |
| CN102784868A (en) * | 2012-08-15 | 2012-11-21 | 浙江中航来宝精工科技有限公司 | Lattice-teeth bolt forming method and forming mold used by same |
| CN103909204A (en) * | 2012-12-29 | 2014-07-09 | 宾科汽车紧固件（昆山）有限公司 | Special-shaped stud cold heading device and cold heading process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU810355A1 (en) * | 1979-03-12 | 1981-03-07 | Всесоюзный Научно-Исследовательскийинститут Метизной Промышленности | Method of producing rod-type articles |
| JPS58345A (en) * | 1981-06-23 | 1983-01-05 | Sakamura Kikai Seisakusho:Kk | Manufacture of bolt for clamping temporary frame |
| CN102601240A (en) * | 2012-03-29 | 2012-07-25 | 苏州新凌电炉有限公司 | Dowel screw forming die |
| CN102784868A (en) * | 2012-08-15 | 2012-11-21 | 浙江中航来宝精工科技有限公司 | Lattice-teeth bolt forming method and forming mold used by same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880379A (en) * | 2016-04-06 | 2016-08-24 | 浙江晋吉汽车配件有限公司 | Anti-rotation assembling die for seal bolt |
| CN110052555A (en) * | 2019-05-30 | 2019-07-26 | 东风汽车紧固件有限公司 | A kind of cold forming method and its multi-station mold of interior cubic sleeve nut |
| CN112207221A (en) * | 2020-09-14 | 2021-01-12 | 苏州工业园区君力精工有限公司 | New energy automobile battery pole cold heading forming process |
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