CN105618665A - Plastic forming method of draw-hole bolt - Google Patents

Plastic forming method of draw-hole bolt Download PDF

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Publication number
CN105618665A
CN105618665A CN201610048976.5A CN201610048976A CN105618665A CN 105618665 A CN105618665 A CN 105618665A CN 201610048976 A CN201610048976 A CN 201610048976A CN 105618665 A CN105618665 A CN 105618665A
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CN
China
Prior art keywords
counterdie
cavity
die
shuttering
punching press
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Granted
Application number
CN201610048976.5A
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Chinese (zh)
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CN105618665B (en
Inventor
王循明
吴栋滨
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LISHUI ZHIYUAN TECHNOLOGY Co.,Ltd.
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Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
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Priority to CN201610048976.5A priority Critical patent/CN105618665B/en
Publication of CN105618665A publication Critical patent/CN105618665A/en
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Publication of CN105618665B publication Critical patent/CN105618665B/en
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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
    • B21K1/44Making machine elements bolts, studs, or the like
    • 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

Abstract

The invention provides a plastic forming method of a draw-hole bolt and belongs to part cold heading methods. The plastic forming method comprises the steps that firstly, the tail taper and required dimension of a rod part are obtained by squeezing a part blank through a first stamping die (1); secondly, a bottom hole and the required dimension of the rod part are obtained by squeezing the part (2) in the first step through a second stamping die (3); thirdly, the head taper and the required dimension of upsetting depth and pumping depth of the rod part are obtained by squeezing the part (2) in the second step through a third stamping die (4); fourthly, the required dimension for flattening the head portion, drawing down the rod part and further hole drawing is obtained by squeezing the part (2) machined in the third step through a fourth stamping die (5); and fifthly, the head shape is obtained by squeezing the part (2) machined in the fourth step through a fifth stamping die (6). The plastic forming method of the draw-hole bolt has the advantages that the bottom hole is squeezed effectively, the procedures are simple, machining is convenient, the material utilization rate is high, and the service life of the dies is long.

Description

One takes out hole bolt plastic forming method
Technical field
The invention belongs to parts machining process technical field, be specifically related to a kind of part cold-heading processing method effectively taking out bottom outlet.
Background technology
Chinese Patent Application No. is 201110341854.2 disclose a kind of titanium alloy fastening piece cold heading forming process, it it is the titanium material of the wire coils state first choosing Brinell hardness less than 100, little passage technique is adopted when drawing, namely the deformation after every time annealing increases a passage, and each passage processing capacity is the 50% of last passage processing capacity; What drawing was good coils material feeding high intensity multistage cold former, makes at least through twice cold-heading molding, and each cold-heading molding deflection is less than 50%. The application of this invented technology can improve work efficiency 10-15 times, and material use reduces by 50% so that holistic cost declines more than 70%. The titanium securing member of this explained hereafter compares from economic worth, has higher cost performance than stainless like product, makes the application of this product expand rapidly several times. But its shortcoming is: operation is complex, stock utilization is still improved space, and rapidoprint scope is less, and product tape is jagged, affects product quality, and therefore, its technique needs to improve.
Summary of the invention
For above-mentioned prior art Problems existing, the invention discloses one and take out hole bolt plastic forming method, the part cold-heading processing method that it is a kind of effective extruding bottom outlet, operation is simple, easy to process, stock utilization is high, die life is high.
This invention address that the technical scheme that above-mentioned technical problem adopts is as follows:
A kind of part cold-heading processing method, its as follows:
Step one, by the first stamping die (1) extruding to part blank, it is thus achieved that afterbody tapering and bar portion required size;
Step 2, is extruded the part (2) of step one by the second stamping die (3), it is thus achieved that bottom outlet and bar portion required size;
Step 3, is extruded the part (2) of step 2 by the 3rd stamping die (4), it is thus achieved that the tapered required size with bar portion jumping-up and the evacuation degree of depth of head;
Step 4, the part (2) after step 3 being processed by the 4th stamping die (5) is extruded, and obtains head and flattens and bar portion undergauge and take out hole further and reach required size;
Step 5, the part (2) after step 4 being processed by the 5th stamping die (6) is extruded, it is thus achieved that nose shape.
Preferably, the first stamping die (1) includes upper die and lower die (17), and upper mould can move up and down by counterdie (17) relatively; Upper mould includes upper shuttering (11), punching press rod (13), punching press rod briquetting (14), upper shuttering (11) forms die cavity (12), counterdie (17) is formed can be shaped to afterbody tapering and the counterdie cavity (15) of bar portion jumping-up requirement size by part blank, and counterdie cavity (15) is corresponding up and down with die cavity (12); Punching press rod (13) is stretched into the die cavity (12) of upper shuttering (11) from top to down and stretches out the bottom surface of upper shuttering (11) and can be pressed in counterdie cavity (15); (bottom surface of 14 is connected the punching press rod briquetting that the top of punching press rod (13) fixes with upper shuttering (11); Counterdie cavity (15) vertically stretches into the push rod (16) that can be ejected from counterdie cavity (15) by punch forming part (2), push rod (16) upper end is in counterdie cavity (15), and lower end is under the lower surface of counterdie (17).
Preferably, the second stamping die (3) includes upper die and lower die shell (34), and upper mould can move up and down relative to lower formwork (34); Upper mould includes upper shuttering (31), punching press rod (32), punching press rod briquetting (33), the bottom of upper shuttering (31) is formed can be upset as the die cavity (30-1) requiring size by part blank, die cavity (30-1) is stretched in punching press rod (32) from top to down, and the bottom surface of punching press rod briquetting (33) that upper end fixes with upper shuttering (31) is connected; The internal mold Semen Plantaginis (35) of up and down formula is coordinated in lower formwork (34), internal mold Semen Plantaginis (35) is formed can be squeezed into, by the part (2) of step one molding, the counterdie cavity (30-2) requiring size, and counterdie cavity (30-2) is corresponding up and down with die cavity (30-1); Internal mold Semen Plantaginis (35) descends formwork (34) to move up and down relatively, ejector sleeve (36) stretches into the counterdie cavity (30-2) of internal mold Semen Plantaginis (35) from below to up, and it can move up and down by counterdie cavity (30-2) relatively; In ejector sleeve (36), assembling stretches red needle (39), the upper end of stretching red needle (39) is stretched out ejector sleeve (36) and is in counterdie cavity (30-2) afterwards, combined pad (38-3) is fixed in lower end, combined pad (38-3) is fixed on internal mold cushion block (38-1), and internal mold cushion block (38-1) is fixed on the lower end of lower formwork (34); Spring is loaded between the upper surface of internal mold cushion block (38-1) and the lower surface of internal mold Semen Plantaginis (35); Three pins (38-2) of combined pad (38-3) assembling energy vertical motion, the upper plane of three pins (38-2) contacts with the lower plane of ejector sleeve (36); Three pins (38-2) can slide up and down to stretch out the bottom of lower formwork (34) through combined pad (38-3).
Preferably, the 3rd stamping die includes mould (4) and lower formwork (44), and upper mould (4) can move up and down relative to lower formwork (44), upper mould includes upper shuttering (41), punching press rod (42), punching press rod briquetting (43), part blank can be struck out head tapering and require the die cavity (40-1) of size by the bottom formation of upper shuttering (41), die cavity (40-1) is stretched in punching press rod (42) from top to down, and the bottom surface of punching press rod briquetting (43) that its upper end fixes with upper shuttering (41) behind the top of die cavity (40-1) is connected, lower formwork (44) forms the counterdie cavity (40-2) that can place part (2) molding, counterdie cavity (40-2) is corresponding up and down with die cavity (40-1), counterdie cavity (40-2) stretches into ejector sleeve (47), ejector sleeve (47) can move up and down by counterdie cavity (40-2) relatively, ejector sleeve (47) coordinates stretching red needle (48), stretch red needle (48) upper end to stretch out ejector sleeve (47) and be in counterdie cavity (40-2), combined pad (45) is fixed in lower end, combined pad (45) is fixed on lower formwork (44), the lower plane of combined pad (45) is concordant with the lower plane of lower formwork (44), combined pad (45) coordinates three pins (46) that can move up and down, and the upper end of three pins (46) contacts with the lower plane of ejector sleeve (47), and lower end is stretched out outside combined pad (45).
Preferably, the 4th stamping die includes mould (5) and counterdie (52), and upper mould (5) can move up and down relative to counterdie (52), upper mould (5) includes upper shuttering (51), and the die cavity (50-1) that conical part blank can strike out pie head is formed on the bottom of upper shuttering (51), counterdie (52) is formed can place the lower bed die cavity (50-2) of part (2) after step 3, and counterdie cavity (50-2) is corresponding up and down with die cavity (50-1), counterdie cavity (50-2) stretches into the upper end of ejector sleeve (55), ejector sleeve (55) can move up and down by counterdie cavity (50-2) relatively, ejector sleeve (55) assembling stretches red needle (56), the upper end stretching red needle (56) is stretched out ejector sleeve (55) and is in counterdie cavity (50-2), combined pad (53) is fixed in its lower end, combined pad (53) is concordant with the lower plane of counterdie (52) with counterdie (52) secure fit and lower plane, three pins (54) that can move up and down are closed in combined pad (53) assembling, the upper plane of three pins (54) contacts with the lower plane of ejector sleeve (55), three pins (54) can slide up and down to stretch out the bottom of counterdie (52) through combined pad (53).
Preferably, the 5th stamping die includes top stamping die (6) and counterdie (65), and top stamping die (6) can move up and down relative to bottom bed die (65); Top stamping die (6) includes punch die (61), the upper edger (64) of part head, tightening cover (62), upper edger (64) is embedded at the vestibule of tightening cover (62), tightening cover (62) screw-type is fixed on the bottom of punch die (61), and punch die (6) forms the passage (60-1) that formed product takes out in punch die (61); Counterdie (65) forms the counterdie cavity (60-2) that can be entered smoothly by the part (2) that complete step 4 smoothly, and counterdie cavity (60-2) is corresponding up and down with passage (60-1); Counterdie cavity (60-2) stretches into the upper end of logical rod (66), and the lower end of logical rod (66) is in outside counterdie (65); Logical rod (66) is vertically arranged, being ejected from counterdie cavity (60-2) by punch forming part (2), logical rod (66) slides up and down to stretch out the bottom of counterdie (65) through the through hole of counterdie (65).
Bed die adopts combination type, ensures that each sequence takes out hole depth by controlling ejector sleeve stroke, promotes bottom outlet energy one-shot forming.
In order to ensure that the bottom outlet degree of depth can reach requirement, divide and take out hole three times, it is ensured that stablizing of bottom outlet molding. While ensureing the degree of depth, it also avoid the impact of elastic properties of materials deformation, promote bottom outlet circularity and diameter dimension more stable.
Point take out hole three times, promote backward extrusion to take out the red needle stress in hole evenly, improve the service life of red needle.
Head molding divides five molding, is also ensureing product head and the axiality in bar portion based on while reducing each sequence punch die extruding force.
Prior art is compared, and it is an advantage of the current invention that employing five processes and step one, blank is carried out chamfering shaping; Step 2, hole taken out by bed die; Step 3, punch die preforming matching bottom mould simultaneously takes out hole further; Step 4, punch die jumping-up simultaneously bed die synnema base and further take out hole and reach depth requirements; Step 5, crowded hexagonal forming cut by punch die; Thus changing part external form gradually, meeting process requirements, stock utilization is high, saves material, saves cost. Operation of the present invention is simple, and part only need to be placed on appointment position, mould energy time processing molding, and effect is immediately visible, and adjustable is high, and rate of reducing the number of rejects and seconds saves cost further. The present invention can effectively remove burr, and finished surface smoothness quality is excellent, applies effective. The present invention is that a kind of pulling eye is stable, and speed is high, and effective parts machining process, the part concentricity of its processing is ensured, the life-span of mould and adnexa is also of a relatively high, moves back mould and is also convenient for, therefore can meet cold-heading demand.
Accompanying drawing explanation
Fig. 1 is the profile of the embodiment of the present invention the first stamping die;
Fig. 2 is the STRUCTURE DECOMPOSITION figure of Fig. 1;
Fig. 3 is the enlarged drawing of I part in Fig. 2;
Fig. 4 is the profile of the embodiment of the present invention the second stamping die;
Fig. 5 is the STRUCTURE DECOMPOSITION figure of Fig. 4;
Fig. 6 is the enlarged drawing of II part in Fig. 5;
Fig. 7 is the profile of the embodiment of the present invention the 3rd stamping die;
Fig. 8 is the STRUCTURE DECOMPOSITION figure of Fig. 7;
Fig. 9 is the enlarged drawing of III part in Fig. 8;
Figure 10 is the profile of the embodiment of the present invention the 4th stamping die;
Figure 11 is the STRUCTURE DECOMPOSITION figure of Figure 10;
Figure 12 is the enlarged drawing of IV part in Figure 11;
Figure 13 is the profile of the embodiment of the present invention the 5th stamping die;
Figure 14 is the STRUCTURE DECOMPOSITION figure of Figure 13;
Figure 15 is the enlarged drawing of V part in Figure 14;
Figure 16 is the enlarged drawing of VI part in Figure 14.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As illustrated in figs. 1-16, the present embodiment takes out hole bolt plastic forming method, carries out as follows:
Step one, is squeezed in bed die tool by the first stamping die 1 to part blank, makes bottom woollen one chamfering shaping of formation, it is thus achieved that the size that afterbody tapering and bar portion jumping-up require;
Step 2, carries out extruding acquisition part jumping-up by the second stamping die 3 to step one part 2 and requires size with taking out hole arrival;
Step 3, extrudes preforming by the 3rd stamping die 4 to the head of step 2 part 2, and part further walks jumping-up and takes out hole further and arrive and require size, it is thus achieved that head is tapered and the requirement size of bar portion jumping-up and the evacuation degree of depth;
Step 4, part 2 head after step 3 being processed by the 4th stamping die 5 is flattened, bar portion undergauge and further take out hole and reach requirement size;
Step 5, part 2 head after step 4 being processed by the 5th stamping die 6 is cut extruding and is obtained nose shape, the waste material that topping is unnecessary simultaneously, it is thus achieved that the shape and size of carrot-free part contouring head, namely completes the whole part cold-heading course of processing.
First stamping die 1 includes upper die and lower die 17, upper mould can relatively move up and down by counterdie 17 under driver effect, upper mould includes upper shuttering 11, punching press rod 13, punching press rod briquetting 14, upper shuttering 11 forms die cavity 12, counterdie 17 forms the counterdie cavity 15 that part blank can be shaped to bottom tapering and bar portion jumping-up requirement size, and counterdie cavity 15 is corresponding with die cavity about 12. In punching press rod 13 stretches into the die cavity 12 of upper shuttering 11 from top to down and stretches out the bottom surface of upper shuttering 11 and can be pressed into the cavity 15 of counterdie 17, punching press rod 13(is in die cavity 12 simultaneously) the bottom surface of punching press rod briquetting 14 that fixes with upper shuttering 11, top be connected. Vertically stretching into the push rod 16 that can be ejected from counterdie cavity 15 by punch forming part 2 in counterdie cavity 15, push rod 16 upper end is in counterdie cavity 15, and lower end is under the lower surface of counterdie 17. After counterdie cavity 15 put into by blank part, punching press rod 13 moves down under the driving effect of driver, the top of blank part 2 makes part move down under the extruding of punching press rod 13 bottom faces and enters counterdie cavity 15, forms the foot section brought tapering and the part 2 of bar portion jumping-up requirement size.
Second stamping die 3 includes upper die and lower die shell 34, upper mould can be moved up and down relative to lower formwork 34 by the effect of driver, upper mould includes upper shuttering 31, punching press rod 32, punching press rod briquetting 33, formed in the bottom of upper shuttering 31 and part blank can be upset as the die cavity 30-1 requiring size, punching press rod 32 stretches into die cavity 30-1 from top to down, and its upper end is connected from the top through hole of die cavity 30-1 through the bottom surface of the rear punching press rod briquetting 33 fixed with upper shuttering 31. Coordinating up and down formula internal mold Semen Plantaginis 35 in lower formwork 34, internal mold Semen Plantaginis 35 is formed can be squeezed into the counterdie cavity 30-2 requiring size by the part 2 of step one molding, and counterdie cavity 30-2 and die cavity 30-1 is corresponding up and down. Internal mold Semen Plantaginis 35 descends formwork 34 to move up and down relatively, and ejector sleeve 36 stretches into the counterdie cavity 30-2 of internal mold Semen Plantaginis 35 from below to up, and it can move up and down by counterdie cavity 30-2 relatively. In ejector sleeve 36, assembling stretches red needle 39, the upper end of stretching red needle 39 is in counterdie cavity 30-2 after stretching out ejector sleeve 36, lower end is fixed on combined pad 38-3, combined pad 38-3 and is fixed on internal mold cushion block 38-1, and internal mold cushion block 38-1 is fixed on the lower end of lower formwork 34. Spring is loaded between the upper surface of internal mold cushion block 38-1 and the lower surface of internal mold Semen Plantaginis 35. Combined pad 38-3 assembles three pin 38-2, three pin 38-2 can vertical motion, on it, plane contacts with the lower plane of ejector sleeve 36. Three pin 38-2 can slide up and down to stretch out the bottom of lower formwork 34 through the through hole of combined pad 38-3. Part 2 moves down under the effect of driver, enters counterdie cavity 30-2, and forming afterbody has bottom outlet and the part 2 of bar portion jumping-up requirement size.
Internal mold Semen Plantaginis 35 is moved downward to by counterdie 34 relative after punch die compression and requires position, spring is compressed simultaneously, the relative internal mold Semen Plantaginis 35 of ejector sleeve 36 and stretching red needle 39 can move up and down, stretch red needle 39 and be fixed on combined pad 38-3, the lower plane of combined pad 38-3 is concordant with the lower plane of lower formwork 34, and this combined pad 38-3 and three pin 38-2 coordinates. The lower plane of internal mold cushion block 38-1 is concordant with the lower plane of lower formwork 34, after upper punch die cavity 30-1 and counterdie cavity 30-2 put into by blank part, upper mould moves down under driver drives, blank part top makes part move down under the extruding of punching press rod 32 bottom surfaces and enters counterdie cavity 30-2, forms head bar portion and takes out the part 2 of hole requirement size.
3rd stamping die includes mould 4 and lower formwork 44, upper mould 4 can be moved up and down relative to lower formwork 44 by actuator, upper mould includes upper shuttering 41, punching press rod 42, punching press rod briquetting 43, part blank can be struck out head tapering and require the die cavity 40-1 of size by the bottom formation of upper shuttering 41, punching press rod 42 stretches into die cavity 40-1 from top to down, and the bottom surface of the punching press rod briquetting 43 that its upper end fixes with upper shuttering 41 after the top through hole of die cavity 40-1 is connected. Lower formwork 44 forms the counterdie cavity 40-2 that can place part 2 molding, counterdie cavity 40-2 and die cavity 40-1 is corresponding up and down, counterdie cavity 40-2 stretches into ejector sleeve 47, ejector sleeve 47 can move up and down by counterdie cavity 40-2 relatively, ejector sleeve 47 coordinates stretching red needle 48, and stretching red needle 48 upper end is stretched out and is in counterdie cavity 40-2 outside ejector sleeve 47, and combined pad 45 is fixed in lower end, combined pad 45 is fixed on lower formwork 44, and its lower plane is concordant with the lower plane of lower formwork 44. Combined pad 45 coordinates three pins 46, and three pins 46 can move up and down, and its upper end contacts with the lower plane of ejector sleeve 47, and lower end is stretched out outside combined pad 45. Three pins 46 can slide up and down to stretch out the bottom of lower formwork 44 through combined pad 45 through hole. Part 2 moves down under driver effect, enters counterdie cavity 40-2, forms that head is tapered and bar portion jumping-up and take out the part 2 that hole requires further.
4th stamping die includes mould 5 and counterdie 52, and upper mould 5 can be moved up and down relative to counterdie 52 by actuator, and upper mould 5 includes upper shuttering 51, and the die cavity 50-1 that conical part blank can strike out pie head is formed on the bottom of upper shuttering 51. Counterdie 52 is formed can place the lower bed die cavity 50-2 of part 2 after step 3, and counterdie cavity 50-2 and die cavity 50-1 is corresponding up and down. Counterdie cavity 50-2 stretches into the upper end of ejector sleeve 55, ejector sleeve 55 can move up and down by counterdie cavity 50-2 relatively, ejector sleeve 55 assembling stretches red needle 56, the upper end of stretching red needle 56 is stretched out and is in counterdie cavity 50-2 outside ejector sleeve 55, combined pad 53 is fixed in its lower end, and combined pad 53 is concordant with the lower plane of counterdie 52 with counterdie 52 secure fit and its lower plane, and three pins 54 are closed in combined pad 53 assembling, three pins 54 can move up and down, and on it, plane contacts with the lower plane of ejector sleeve 55. Three pins 54 can slide up and down to stretch out the bottom of counterdie 52 through the through hole of combined pad 53. Part 2 can move down under acting in driver, enters counterdie cavity 50-2, and forming head has flattening and bar portion jumping-up and further take out the part 2 that hole requires.
5th stamping die includes top stamping die 6 and counterdie 65, top stamping die 6 can be moved up and down relative to bottom bed die 65 by actuator, top stamping die 6 includes punch die 61, the upper edger 64 of part head, tightening cover 62, upper edger 64 is embedded in the vestibule of tightening cover 62, tightening cover 62 screw-type is fixed on the bottom of punch die 61, and punch die 6 forms the passage 60-1 that formed product takes out in punch die 61. Counterdie 65 forms the counterdie cavity 60-2 that can be entered smoothly by the part 2 that complete step 4 smoothly, and counterdie cavity 60-2 is corresponding up and down with passage 60-1. Counterdie cavity 60-2 stretches into the upper end of logical rod (or push rod) 66, and the lower end of logical rod 66 is in outside counterdie 65. Logical rod 66 is vertically arranged, and punch forming part 2 can be ejected by it from counterdie cavity 60-2, and logical rod 66 slides up and down to stretch out the bottom of counterdie 65 through the through hole of counterdie 65. When upper mould 6 moves down under driver drives effect, the lower plane of trim die 64 contact part 2 also promotes part 2 to enter to start extruding in lower mode cavity after 60-2, logical rod 66 vertically upper top parts 2 simultaneously, it is ensured that part 2 separates from upper mould passage 60-1. Define the part 2 of step 5.
It will be recognized by one skilled in the art that above example is intended merely to the explanation present invention, and be not intended as limitation of the invention, as long as within the scope of the invention, the change of above example, deformation all will be dropped on protection scope of the present invention.

Claims (6)

1. a part cold-heading processing method, is characterized in that as follows:
Step one, by the first stamping die (1) extruding to part blank, it is thus achieved that afterbody tapering and bar portion required size;
Step 2, is extruded the part (2) of step one by the second stamping die (3), it is thus achieved that bottom outlet and bar portion required size;
Step 3, is extruded the part (2) of step 2 by the 3rd stamping die (4), it is thus achieved that the tapered required size with bar portion jumping-up and the evacuation degree of depth of head;
Step 4, the part (2) after step 3 being processed by the 4th stamping die (5) is extruded, and obtains head and flattens and bar portion undergauge and take out hole further and reach required size;
Step 5, the part (2) after step 4 being processed by the 5th stamping die (6) is extruded, it is thus achieved that nose shape.
2. part cold-heading processing method according to claim 1, it is characterised in that: described the first stamping die (1) includes upper die and lower die (17), and upper mould can move up and down by counterdie (17) relatively; Upper mould includes upper shuttering (11), punching press rod (13), punching press rod briquetting (14), upper shuttering (11) forms die cavity (12), counterdie (17) is formed can be shaped to afterbody tapering and the counterdie cavity (15) of bar portion jumping-up requirement size by part blank, and counterdie cavity (15) is corresponding up and down with die cavity (12); Punching press rod (13) is stretched into the die cavity (12) of upper shuttering (11) from top to down and stretches out the bottom surface of upper shuttering (11) and can be pressed in counterdie cavity (15); (bottom surface of 14 is connected the punching press rod briquetting that the top of punching press rod (13) fixes with upper shuttering (11); Counterdie cavity (15) vertically stretches into the push rod (16) that can be ejected from counterdie cavity (15) by punch forming part (2), push rod (16) upper end is in counterdie cavity (15), and lower end is under the lower surface of counterdie (17).
3. part cold-heading processing method according to claim 1, it is characterised in that: described the second stamping die (3) includes upper die and lower die shell (34), and upper mould can move up and down relative to lower formwork (34); Upper mould includes upper shuttering (31), punching press rod (32), punching press rod briquetting (33), the bottom of upper shuttering (31) is formed can be upset as the die cavity (30-1) requiring size by part blank, die cavity (30-1) is stretched in punching press rod (32) from top to down, and the bottom surface of punching press rod briquetting (33) that upper end fixes with upper shuttering (31) is connected; The internal mold Semen Plantaginis (35) of up and down formula is coordinated in lower formwork (34), internal mold Semen Plantaginis (35) is formed can be squeezed into, by the part (2) of step one molding, the counterdie cavity (30-2) requiring size, and counterdie cavity (30-2) is corresponding up and down with die cavity (30-1); Internal mold Semen Plantaginis (35) descends formwork (34) to move up and down relatively, ejector sleeve (36) stretches into the counterdie cavity (30-2) of internal mold Semen Plantaginis (35) from below to up, and it can move up and down by counterdie cavity (30-2) relatively; In ejector sleeve (36), assembling stretches red needle (39), the upper end of stretching red needle (39) is stretched out ejector sleeve (36) and is in counterdie cavity (30-2) afterwards, combined pad (38-3) is fixed in lower end, combined pad (38-3) is fixed on internal mold cushion block (38-1), and internal mold cushion block (38-1) is fixed on the lower end of lower formwork (34); Spring is loaded between the upper surface of internal mold cushion block (38-1) and the lower surface of internal mold Semen Plantaginis (35); Three pins (38-2) of combined pad (38-3) assembling energy vertical motion, the upper plane of three pins (38-2) contacts with the lower plane of ejector sleeve (36); Three pins (38-2) can slide up and down to stretch out the bottom of lower formwork (34) through combined pad (38-3).
4. part cold-heading processing method according to claim 1, it is characterized in that: the 3rd described stamping die includes mould (4) and lower formwork (44), upper mould (4) can move up and down relative to lower formwork (44), upper mould includes upper shuttering (41), punching press rod (42), punching press rod briquetting (43), part blank can be struck out head tapering and require the die cavity (40-1) of size by the bottom formation of upper shuttering (41), die cavity (40-1) is stretched in punching press rod (42) from top to down, and the bottom surface of punching press rod briquetting (43) that its upper end fixes with upper shuttering (41) behind the top of die cavity (40-1) is connected, lower formwork (44) forms the counterdie cavity (40-2) that can place part (2) molding, counterdie cavity (40-2) is corresponding up and down with die cavity (40-1), counterdie cavity (40-2) stretches into ejector sleeve (47), ejector sleeve (47) can move up and down by counterdie cavity (40-2) relatively, ejector sleeve (47) coordinates stretching red needle (48), stretch red needle (48) upper end to stretch out ejector sleeve (47) and be in counterdie cavity (40-2), combined pad (45) is fixed in lower end, combined pad (45) is fixed on lower formwork (44), the lower plane of combined pad (45) is concordant with the lower plane of lower formwork (44), combined pad (45) coordinates three pins (46) that can move up and down, and the upper end of three pins (46) contacts with the lower plane of ejector sleeve (47), and lower end is stretched out outside combined pad (45).
5. part cold-heading processing method according to claim 1, it is characterised in that: the 4th described stamping die includes mould (5) and counterdie (52), and upper mould (5) can move up and down relative to counterdie (52), upper mould (5) includes upper shuttering (51), and the die cavity (50-1) that conical part blank can strike out pie head is formed on the bottom of upper shuttering (51), counterdie (52) is formed can place the lower bed die cavity (50-2) of part (2) after step 3, and counterdie cavity (50-2) is corresponding up and down with die cavity (50-1), counterdie cavity (50-2) stretches into the upper end of ejector sleeve (55), ejector sleeve (55) can move up and down by counterdie cavity (50-2) relatively, ejector sleeve (55) assembling stretches red needle (56), the upper end stretching red needle (56) is stretched out ejector sleeve (55) and is in counterdie cavity (50-2), combined pad (53) is fixed in its lower end, combined pad (53) is concordant with the lower plane of counterdie (52) with counterdie (52) secure fit and lower plane, three pins (54) that can move up and down are closed in combined pad (53) assembling, the upper plane of three pins (54) contacts with the lower plane of ejector sleeve (55), three pins (54) can slide up and down to stretch out the bottom of counterdie (52) through combined pad (53).
6. part cold-heading processing method according to claim 1, it is characterized in that: the 5th described stamping die includes top stamping die (6) and counterdie (65), top stamping die (6) can move up and down relative to bottom bed die (65); Top stamping die (6) includes punch die (61), the upper edger (64) of part head, tightening cover (62), upper edger (64) is embedded at the vestibule of tightening cover (62), tightening cover (62) screw-type is fixed on the bottom of punch die (61), and punch die (6) forms the passage (60-1) that formed product takes out in punch die (61); Counterdie (65) forms the counterdie cavity (60-2) that can be entered smoothly by the part (2) that complete step 4 smoothly, and counterdie cavity (60-2) is corresponding up and down with passage (60-1); Counterdie cavity (60-2) stretches into the upper end of logical rod (66), and the lower end of logical rod (66) is in outside counterdie (65); Logical rod (66) is vertically arranged, being ejected from counterdie cavity (60-2) by punch forming part (2), logical rod (66) slides up and down to stretch out the bottom of counterdie (65) through the through hole of counterdie (65).
CN201610048976.5A 2016-01-25 2016-01-25 One kind takes out hole bolt plastic forming method Active CN105618665B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105922016A (en) * 2016-06-22 2016-09-07 海盐宝利机械有限公司 Hot-forging reducing automatic production line for bolts
CN106862475A (en) * 2017-02-23 2017-06-20 江苏天毅冷镦股份有限公司 The cold upsetting production technique of interior hexagonal studs blank
CN106994494A (en) * 2017-03-10 2017-08-01 舟山市7412工厂 The mould processed for eccentric bolt cold-heading
CN109940356A (en) * 2019-03-11 2019-06-28 深圳航空标准件有限公司 The manufacturing procedure of double trimming formers and its double trimming formers

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB681461A (en) * 1949-12-07 1952-10-22 Joseph Braems Method and means for cold heading of bolts, screws, rivets and similar parts
CN102059306A (en) * 2010-11-19 2011-05-18 宁波安拓实业有限公司 Multi-station cold heading manufacturing method for plate die adjusting seat blank
CN202387902U (en) * 2011-12-14 2012-08-22 淄博强大集团有限公司 Local molding cold heading mould for bolt
CN204122683U (en) * 2014-08-15 2015-01-28 宾科汽车紧固件(昆山)有限公司 A kind of cold-heading module for the manufacture of flange sleeve
CN104525811A (en) * 2014-12-24 2015-04-22 舟山市7412工厂 Part cold heading machining method
CN104646581A (en) * 2015-03-10 2015-05-27 富奥汽车零部件股份有限公司 Manufacturing method and mold structure of oversized-head pole bolt
CN204449175U (en) * 2015-02-03 2015-07-08 靖江市恒丰铆钉制造有限公司 The mould of rivet body in a kind of Novel rivet
CN104801653A (en) * 2015-04-09 2015-07-29 鹏驰五金制品(昆山)有限公司 Cold-upsetting processing technology with flange bolt

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB681461A (en) * 1949-12-07 1952-10-22 Joseph Braems Method and means for cold heading of bolts, screws, rivets and similar parts
CN102059306A (en) * 2010-11-19 2011-05-18 宁波安拓实业有限公司 Multi-station cold heading manufacturing method for plate die adjusting seat blank
CN202387902U (en) * 2011-12-14 2012-08-22 淄博强大集团有限公司 Local molding cold heading mould for bolt
CN204122683U (en) * 2014-08-15 2015-01-28 宾科汽车紧固件(昆山)有限公司 A kind of cold-heading module for the manufacture of flange sleeve
CN104525811A (en) * 2014-12-24 2015-04-22 舟山市7412工厂 Part cold heading machining method
CN204449175U (en) * 2015-02-03 2015-07-08 靖江市恒丰铆钉制造有限公司 The mould of rivet body in a kind of Novel rivet
CN104646581A (en) * 2015-03-10 2015-05-27 富奥汽车零部件股份有限公司 Manufacturing method and mold structure of oversized-head pole bolt
CN104801653A (en) * 2015-04-09 2015-07-29 鹏驰五金制品(昆山)有限公司 Cold-upsetting processing technology with flange bolt

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105922016A (en) * 2016-06-22 2016-09-07 海盐宝利机械有限公司 Hot-forging reducing automatic production line for bolts
CN105922016B (en) * 2016-06-22 2017-09-19 海盐宝利机械有限公司 A kind of bolt hot forging undergauge automatic assembly line
CN106862475A (en) * 2017-02-23 2017-06-20 江苏天毅冷镦股份有限公司 The cold upsetting production technique of interior hexagonal studs blank
CN106862475B (en) * 2017-02-23 2018-12-25 江苏天毅冷镦股份有限公司 The cold upsetting production technique of interior hexagonal studs blank
CN106994494A (en) * 2017-03-10 2017-08-01 舟山市7412工厂 The mould processed for eccentric bolt cold-heading
CN109940356A (en) * 2019-03-11 2019-06-28 深圳航空标准件有限公司 The manufacturing procedure of double trimming formers and its double trimming formers

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