CN113399561B - Device for machining conical thin-walled part - Google Patents
Device for machining conical thin-walled part Download PDFInfo
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- CN113399561B CN113399561B CN202110662466.8A CN202110662466A CN113399561B CN 113399561 B CN113399561 B CN 113399561B CN 202110662466 A CN202110662466 A CN 202110662466A CN 113399561 B CN113399561 B CN 113399561B
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
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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
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
Abstract
The invention discloses a device for processing a conical thin-wall part, which comprises an upper die holder and a lower die holder for placing the conical thin-wall part to be processed, wherein a concave part is arranged on one side of the upper die holder close to the lower die holder, a convex part is arranged on one side of the lower die holder close to the upper die holder, and when the upper die holder is close to the lower die holder for punching, a space for processing and forming the conical thin-wall part is formed between the concave part and the convex part. The invention has the beneficial effects that: 1. the upper end face and the lower end face of the conical thin-walled part are machined in a blanking mode, laser is not needed, cost is saved, and thermal deformation is reduced. 2. The conical thin-wall part can be placed only by simple manual work or other methods, and a special tool positioning device is not needed; 3. the upper end surface and the lower end surface of the conical thin-wall part are punched in the same punching process, and the concentricity of the openings of the upper end surface and the lower end surface is high.
Description
Technical Field
The invention relates to the field of stamping, in particular to a device for machining a conical thin-walled part.
Background
The disc in the disc material separator has the functions of shortening the settling distance of particles and enlarging the settling area of the rotary drum, the disc is arranged in the rotary drum, the production capacity of the separator is greatly improved, the disc has an important effect on the separation effect of the separator, the processing and manufacturing precision of the disc needs to be controlled, the separation effect is directly influenced, and therefore the reasonable manufacturing and controlling size of the disc needs to be established.
The disc belongs to a conical thin-wall part, one disc type separator generally needs to be provided with hundreds of discs which are stacked together to operate, so that a good separation effect can be achieved, and the requirements on processing precision and consistency are high.
The existing processing means for processing the conical thin-wall part into the disc has the following problems: 1. the upper end face and the lower end face of the disc are processed by means of laser cutting, so that the disc is easy to thermally deform, the size of the disc is deformed, the conical surfaces cannot be well attached, and the cost is high, so that the disc is not in accordance with the economic production requirement in mass production; 2. the conical thin-wall part needs to be positioned and matched by a tool for processing, so that time and labor are wasted, the processing efficiency is low, and the control of the production progress is not facilitated; 3. two sets of fixtures are needed to be matched to cut the upper end face and the lower end face of the conical thin-walled part, the lower end face is cut by one set of fixture in a positioning mode, then the upper end face is cut by one set of fixture in a positioning mode, positioning errors are prone to being large, and concentricity of the upper end face and the lower end face is difficult to guarantee.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method which can solve the problem of precision of processing a conical thin-wall part into a disc.
The technical scheme of the invention is as follows: the device for processing the conical thin-walled part comprises an upper die holder and a lower die holder for placing the conical thin-walled part to be processed, wherein a concave part is arranged on one side of the upper die holder close to the lower die holder, a convex part is arranged on one side of the lower die holder close to the upper die holder, and when the upper die holder is close to the lower die holder for punching, a space for processing and forming the conical thin-walled part is formed between the concave part and the convex part.
Further, the upper die base comprises an upper die base, a compression ring, an edge punching female die and a punching female die, the compression ring, the edge punching female die and the punching female die are connected to one side, close to the lower die base, of the upper die base, a concave part of the upper die base is formed by one sides, close to the lower die base, of the compression ring and the edge punching female die, and the edge punching female die is arranged above one side, close to the lower die base, of one side, close to the upper die base, of the compression ring, so that the conical thin-walled part is firstly pressed on the lower die base and then the upper port of the conical thin-walled part is punched;
the lower die base comprises a lower die base, a ring body, a trimming punch and a notching punch, the ring body, the trimming punch and the notching punch are connected to one side of the lower die base, which is close to the upper die base, the notching punch and the ring body form a bulge of the lower die base, and the trimming punch is annularly arranged on the outer side of the ring body;
the pressing ring and the ring body are corresponding in position, one side of the pressing ring close to the ring body is matched with one side of the ring body close to the pressing ring, and a conical gap is formed between the ring body and the pressing ring, so that a conical surface is punched on one side of a conical thin-wall part to be machined, which is placed on the lower die base, close to the pressing ring;
the notching male die and the notching female die correspond to each other in position, and the shape and the profile of the outer diameter of the notching male die are matched with the shape and the profile of the inner diameter of the notching female die;
the edge punching male die and the edge punching female die correspond in position, and the outer diameter of the edge punching male die is matched with the inner diameter shape profile of the edge punching female die.
Furthermore, the distance between one side of the compression ring close to the ring body and the ring body is smaller than the distance between one side of the trimming die close to the ring body and the ring body.
Furthermore, the upper die base further comprises an ejector rod and a rod sleeve, the rod sleeve is connected to the upper die base, one end of the ejector rod is connected to the rod sleeve, the other end of the ejector rod is arranged on one side, close to the lower die base, of the upper die base, and the outline of one side, close to the punching female die, of the punching female die is matched with the outline of one side, close to the ejector piece, of the punching female die.
Further, the die holder still includes the cushion rubber circle, and the cushion rubber circle sets up between ring body and lower mould base, and the one end and the ring body coupling of being close to the ring body of cushion rubber circle, the one end and the lower mould pedestal connection that the cushion rubber circle is close to the lower mould base.
Furthermore, the blanking die further comprises a trimming die fixing ring, the trimming die fixing ring is arranged between the trimming die and the upper die base, one end, close to the upper die base, of the trimming die fixing ring is connected with the upper die base, and one end, close to the lower die base, of the trimming die fixing ring is connected with the trimming die.
Furthermore, the blanking male die further comprises a trimming male die fixing plate, the trimming male die fixing plate is arranged on the outer side of the trimming male die in a surrounding mode, a protruding block extending towards the trimming male die is arranged on the trimming male die, the trimming male die is provided with a groove matched with the shape of the protruding block of the trimming male die, and the trimming male die fixing plate is connected to one side, close to the upper die base, of the lower die base.
The die further comprises a material pushing plate, the material pushing plate is connected to one side, close to the lower die base, of the trimming die fixing ring, and one side, close to the trimming die, of the material pushing plate is tangent to the conical thin-walled part to be machined.
Furthermore, the lower die holder also comprises a centering block, the centering block is connected at one end of the center of the lower die base close to the upper die holder, the centering block is provided with a protrusion extending towards the upper die holder, and the protrusion and a preset hole in the center of the conical thin-wall part to be machined have the same shape.
A method for machining a tapered, thin-walled part,
firstly, an upper die base is stamped towards the die base, a pressing ring of the upper die base is stamped towards a ring body of a lower die base, so that one side, close to the pressing ring, of a conical surface of a conical thin-wall part is pressed on the ring body, meanwhile, the pressing ring stamps one side, close to the pressing ring, of the conical thin-wall part, the conical surface of one side, close to the pressing ring, of the conical thin-wall part is stamped, then, one side, close to the conical surface of the conical thin-wall part, of a trimming die of the upper die base is also in contact with the conical surface of the conical thin-wall part, and the conical surface of one side, close to the trimming die, of the conical thin-wall part is stamped;
after the conical surface of the conical thin-walled part is punched, shearing the upper end surface of the conical thin-walled part together by the outer side of the notching male die of the lower die holder and the inner side of the notching female die of the upper die holder, and shearing the edge of the lower end surface of the conical thin-walled part by the outer side of the trimming male die of the lower die holder and the inner side of the trimming female die of the upper die holder;
and step three, completing stamping of the upper die base principle and the lower die base, pushing the residual materials and the broken materials on the upper end surface of the conical thin-walled piece by a material ejecting rod of the upper die base, and pushing the residual materials and the broken materials on the edge of the lower end surface of the conical thin-walled piece by a material pushing plate of the upper die base.
The beneficial effects of the invention are as follows: 1. the upper end face and the lower end face of the conical thin-walled part are machined in a blanking mode, laser is not needed, cost is saved, and thermal deformation is reduced. 2. The conical thin-wall part can be placed only by simple manual work or other methods, and a special tool positioning device is not needed; 3. the upper end surface and the lower end surface of the conical thin-wall part are punched in the same punching process, and the concentricity of the openings of the upper end surface and the lower end surface is high.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a front view of the stamped disc.
FIG. 3 is a top view of the stamped disc.
1. An upper die base; 2. a nut; 3. a lifter bar; 4. determining a middle block; 5. punching a female die base plate; 6. punching a female die; 7. pressing rubber; 8. a compression ring; 9. punching a die fixing ring; 10. punching an edge concave die; 11. pushing a material rubber ring; 12. a material pushing plate; 13. a notching male die; 14. punching a male die base plate; 15. a ring body; 16. punching the edge punch retainer; 17. a lower die base plate; 18. punching an edge male die; 19. a buffer rubber ring; 20. a lower die base; 21. a sixth screw; 22. a fourth screw; 23. a second screw; 24. a third screw; 25. a first screw; 26. a first cylindrical pin; 27. an eighth screw; 28. a seventh screw; 29. a third cylindrical pin; 30. a fifth screw; 31. a second cylindrical pin; 32. a protrusion; 33. a central column; 34. a rod sleeve; 35. a material ejection part; 36. a stem portion 36.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1-3, a device for processing a tapered thin-walled part comprises an upper die holder and a lower die holder, wherein a concave part is arranged on one side of the upper die holder close to the lower die holder, a convex part is arranged on one side of the lower die holder close to the upper die holder, when the upper die holder and the lower die holder are combined in a stamping manner, a space between the concave part and the convex part forms the shape of a target disc to be stamped, the tapered thin-walled part for stamping is placed on the convex part of the lower die holder, and the upper die holder presses the tapered thin-walled part placed on the lower die holder downwards, so that the tapered thin-walled part is stamped into the disc shown in fig. 2 and 3.
The upper die base comprises an upper die base 1, an ejector rod 3, a compression ring 8, a notching die 6 and a trimming die 10. The three components of the ejector rod 3, the compression ring 8 and the trimming die 10 are connected to one side of the upper die base close to the lower die base, and the three components of the ejector rod 3, the compression ring 8 and the trimming die 10 close to one side of the lower die base jointly form a concave part of the upper die base. One side of the notching die 6 close to the lower die holder is arranged above the compression ring 8, and one side of the notching die 6 far away from the lower die holder is connected with the upper die base 1.
The lower die base comprises a lower die base 20, a ring body 15, an edge punching male die 16 and an edge punching male die 13, the ring body 15, the edge punching male die 16 and the edge punching male die 13 are connected to one side, close to the upper die base, of the lower die base 20, the edge punching male die 16 and the ring body 15 form a protruding part of the lower die base, and the edge punching male die 13 is arranged on the outer side of the ring body 15 in a surrounding mode.
The punched disc is shown in fig. 2 and 3, and is of a conical structure and comprises an upper end face, a lower end face and a conical surface, the upper end face and the lower end face of the disc are both provided with circular openings, the lower end face of the disc extends for a short distance towards one end far away from the central axis of the disc, and two bulges used for being mounted on an external disc material separator are arranged on the outer edge of the lower end face of the disc.
The upper die base comprises an upper die base 1, the upper die base 1 is used for being connected with an external conventional punching machine, the punching machine drives the whole upper die base to move up and down by driving the upper die base 1 to move, and the upper die base performs punching on a conical thin-walled part placed on a lower die base.
The upper die base further comprises a rod sleeve 34, the ejector rod 3 comprises a rod part 36 and an ejector part 35, the lower end of the rod part 36 is connected with the upper end of the ejector part 35, the center of the upper die base 1 is provided with a central hole penetrating up and down, the rod part 36 penetrates through the central hole of the upper die base 1, the outer side of the rod sleeve 34 is fixedly connected onto the upper die base 1 through a nut 2, the rod part 36 penetrates through the central hole of the upper die base 1 and is inserted into the rod sleeve 34, and the rod part 36 can slide up and down relative to the rod sleeve 34. The ejector rod 3 is used for ejecting residual materials and broken materials on the inner side of an opening of the upper end face of the punched disc after punching, specifically, the upper die base ascends after punching is completed, the upper end of the rod part 36 can push against a cross rod of an external conventional punching machine, so that the ejector rod 3 slides downwards relative to the upper die base 1, and the residual materials and the broken materials on the inner side of the opening of the upper end face of the punched disc are pushed away.
The lower die base comprises a lower die base 20, a central cylinder 33 and a centering block 4, the lower die base 20 is arranged below the upper die base, the lower end of the central cylinder 33 is fixedly connected to the center of one side, close to the upper die base, of the lower die base 20, the central cylinder 33 and the lower die base 20 are of an integrated structure, the cross section of the lower die base 20 is of an inverted T shape, the lower die base 20 of the shape is higher in stability when being stamped by the upper die base, and stamped discs are more precise. The centering block 4 is mounted at the upper end of a central column 33 of the lower die base 20 through a first screw 25, the upper end of the centering block 4 is provided with a protrusion with a specific shape extending upwards, a conical thin-wall piece to be machined is generally provided with a hole with a specific shape corresponding to the protrusion at the upper end of the centering block 4 before machining, and a worker places the conical thin-wall piece on the lower die base through the hole and waits for the upper die base to punch the conical thin-wall piece.
The upper die base comprises a notching die 6, the notching die 6 is arranged on one side, close to the lower die base 20, of the upper die base 1, the notching die 6 is annularly arranged on the outer side of an ejection piece 35 of the ejection rod 3, the notching die 6 and the upper die base 1 are fixedly connected through a second screw 23, a notching die base plate 5 can be further arranged between the notching die 6 and the upper die base 1, flexible connection between the notching die 6 and the upper die base 1 is achieved, and rigidity damage is reduced between the notching die 6 and the upper die base 1 during stamping.
The lower die holder comprises a notching male die 13, the notching male die 13 is arranged on one side, close to the upper die base 1, of the lower die base 20, the notching male die 13 is arranged on the outer side of the middle fixing block 4 in a surrounding mode, the notching male die 13 is fixedly connected to the upper end of a central column 33 of the lower die base 20 through a third screw 24, a notching male die base plate 14 is further arranged between the third screw 24 and the lower die base 20, the lower die base 20 is flexibly connected with the notching male die 13, and the rigid damage of the notching male die 13 to the lower die base 20 during punching is reduced.
In order to realize the blanking effect of the notching male die 13 and the notching female die 6, the outer diameter of the notching male die 13 is slightly smaller than the inner diameter of the notching female die 6, for the opening of the upper end opening of the blanking disc, the length of the outer diameter of the notching male die 13, which is slightly smaller than the inner diameter of the notching female die 6, is 0.03-0.05mm, the length is used for realizing the best blanking effect, and the shape and the contour of the outer diameter of the notching male die 13 are matched with the shape and the contour of the inner diameter of the notching female die 6. Therefore, a shearing force can be generated between the outer side of the notching male die 13 and the inner side of the notching female die 6 during punching, specifically, the notching male die 13 is stably fixed on the lower die base 20, the notching female die 6 moves downwards relative to the notching male die 13, for a position of the upper end surface of the conical thin-walled piece needing punching, the notching male die 13 provides an upward acting force for the position, the notching female die 6 provides a downward acting force at the position, a shearing force is formed for the position, and the shearing force can act on the upper end surface of the conical thin-walled piece to shear an upper end circular opening of a disc shown in fig. 2 and 3.
The upper die base further comprises a pressing ring 8 and pressing rubber 7, the pressing rubber 7 is arranged between the pressing ring 8 and the upper die base 1, a fourth screw 22 sequentially penetrates through the upper die base 1, the pressing rubber 7 and the pressing ring 8, so that the pressing rubber 7 and the pressing ring 8 can be jointly fixed on the upper die base 1, one end, close to the central cylinder 33, of the pressing ring 8 is located below the notching male die 13, one side, close to the upper die base, of the pressing ring 8 is arranged above one side, close to the lower die base, of the notching female die, the pressing ring 8 can firstly press the conical thin-walled part on the lower die base during stamping, and then the notching male die 13 punches the upper end face of the conical thin-walled part.
The die holder still includes ring 15 and the cushion rubber circle 19 that is used for the buffering upper die base to the die holder punching press, fifth screw 30 passes ring 15 in proper order, cushion rubber circle 19 and lower die base 20 for ring 15 and the common fixed connection of cushion rubber circle 19 are in the one side that lower die base 20 is close to the upper die base, the lower extreme and the lower die base 20 of cushion rubber circle 19 are connected, the upper end and the ring 15 of cushion rubber circle 19 are connected, ring 15 and the outside at the center cylinder 33 of lower die base 20 are all established to the ring 19 ring. The ring body 15 of die holder and the clamp ring 8 of die holder correspond the setting from top to bottom in the position, and when the die holder was to placing the toper thin wall spare punching press of die holder, one side that clamp ring 8 is close to ring body 15 and one side that ring body 15 is close to clamp ring 8 were the slope structure and cooperate each other, had the clearance the same with disc conical surface shape between one side that clamp ring 8 is close to ring body 15 and one side that ring body 15 is close to clamp ring 8 to can punch out disc conical surface shape when making clamp ring 8 press on ring body 15. Lower die base 20 still includes that the round sets up in the boss 32 in the 19 outside of cushion rubber circle and ring body 15 below, when ring body 15 receives downward punching press, cushion rubber circle 19 of below can receive the downward extruded effort and take place to deform, finally the lower extreme of ring body 15 and the protruding 32 contact of lower die base 20, protruding 32 support ring body 15 is stabilized on lower die base 20, ring body 15 can bear the punching press of upper die base to ring body 15 this moment, ring body 15 can upwards provide an effort that is used for punching press toper thin wall spare conical surface.
The upper die base further comprises a trimming die fixing ring 9 and a trimming die 10, the trimming die fixing ring 9 enables the trimming die fixing ring 9 and the upper die base 1 to correspond in position through a first cylindrical pin 26, a second cylindrical pin 31 enables the trimming die 10 and the trimming die 18 fixing ring to correspond in position, a sixth screw 21 sequentially penetrates through the upper die base 1, the trimming die fixing ring 9 and the trimming die 10, the upper end of the trimming die fixing ring 9 is fixedly connected with the upper die base 1, and the lower end of the trimming die fixing ring 9 is connected with the trimming die 10. The trimming die fixing ring 9 can integrally adjust or disassemble the trimming die 10 and the material pushing plate 12.
The lower die holder further comprises a trimming punch 18 and a trimming punch fixing plate 16, the trimming punch 18 is fixed on the lower die base 20 through a third cylindrical pin 29, the trimming punch 18 is arranged on one side, away from the central cylinder 33, of the protrusion 32 in a surrounding mode, the trimming punch fixing plate 16 is arranged on one side, away from the central cylinder 33, of the trimming punch 18 in a surrounding mode, and a lower die cushion plate 17 used for buffering the trimming punch 18 and the trimming punch fixing plate 16 is arranged below the trimming punch 18 and the trimming punch fixing plate 16. The side of the trimming punch 18 remote from the central column 33 has a block extending towards the trimming punch holder 16, the trimming punch holder 16 has a groove matching the shape of the block, and the block of the trimming punch 18 is inserted into the groove. The seventh screw 28 sequentially penetrates through the trimming punch fixing plate 16, the lower die base plate 17 and the lower die base 20, so that the upper end of the lower die base plate 17 is fixedly connected with the trimming punch fixing plate 16, the lower end of the lower die base plate 17 is fixedly connected with the lower die base 20, and the trimming punch fixing plate 16 presses the trimming punch 18 tightly on the lower die base plate 17 through a groove in the trimming punch fixing plate 16. The inner diameter of the trimming punch 18 is slightly larger than the outer diameter of the trimming die 10, the inner diameter of the trimming punch 18 is matched with the outer diameter of the trimming die 10 in shape, shearing force can be generated between the trimming punch 18 and the trimming die 10 to punch the lower edge of the conical surface of the conical thin-walled part, specifically, on a static lower die seat of the trimming punch 18, the trimming die 10 moves downwards relative to the trimming punch, the trimming die 10 provides downward acting force for the position of the lower end face of the conical thin-walled part, the trimming punch 18 provides upward acting force for the position, and shearing force is generated for the position, so that the edge of the lower end face of the disc and the bulge on the edge of the lower end face are cut. According to the laser cutting device, the trimming female die 10 and the trimming male die 18 are adopted for shearing and blanking to replace the laser cutting in the prior art, and the sheared disc does not have thermal deformation compared with a laser cutting slice.
The upper die holder further comprises a material pushing rubber ring 11 and a material pushing plate 12, the trimming die fixing ring 9 extends outwards for a certain distance towards one side away from the pressing ring 8, eighth screws 27 sequentially penetrate through the trimming die fixing ring 9, the material pushing rubber ring 11 and the material pushing plate 12, so that the upper end of the material pushing rubber ring 11 is fixedly connected with the trimming die fixing ring 9, the lower end of the material pushing rubber ring is fixedly connected with the material pushing plate 12, the material pushing plate 12 is annularly arranged on the outer side of the trimming die 10, and one side of the material pushing plate 12 close to the trimming die 10 and one side of the trimming die 10 close to the material pushing plate 12 are arranged. During stamping, the material pushing plate 12 abuts against the upper end of the trimming male die 18, the material pushing plate 12 can move upwards due to the elasticity of the material pushing rubber ring 11, the material pushing rubber ring is extruded in a stamping state, and after stamping is completed, the material pushing plate 12 can bounce downwards for a certain distance to push away residual materials and broken materials on the edge of the lower end face of the conical thin-wall piece.
When the trimming die fixing ring 9 is used, the trimming die fixing ring 9 can be detached, and the material pushing plate 12 and the trimming die 10 can be detached at the same time, so that a worker can conveniently adjust or detach the compression ring 8 and the ring body 15. In practical cases, the die fixing ring 9 may not be installed, and the material pushing plate 12 and the trimming die 10 may be fixedly connected to the side of the upper die base 1 close to the lower die base.
The invention also provides a method for machining a tapered thin-walled part,
step one, when an upper die holder punches a lower die holder downwards, an upper die base 1 drives a pressing ring 8 to push and press the conical surface of a conical thin-walled part downwards preferentially, so that one side, close to the pressing ring 8, of the conical surface of the conical thin-walled part is pressed on a ring body 15, at the moment, a pressing rubber 7 and a buffer rubber ring 19 are both extruded, the ring body 15 moves downwards due to punching, the buffer rubber ring 19 below the ring body 15 deforms due to the punching, the lower end of the ring body 15 finally contacts with a bulge 32 of the lower die base 20, and the bulge 32 of the lower die base 20 supports the ring body 15 upwards to provide acting force; meanwhile, the compression ring 8 is punched upwards, the compression rubber 7 can slow down the extrusion of the upper die base 1 to the compression ring 8 and the compression ring body 15 to the compression ring 8, finally when the compression rubber 7 reaches the deformation limit, one side, close to the center, of the upper end of the compression ring 8 is also in contact with the notching female die 6 at the same time, so that the compression ring 8 is stable on the upper die base, a downward rigid force is provided for one side, close to the conical surface of the conical thin-walled part, of the compression ring 8, when the upper die base 1 continues to move downwards, the upper die base 1 drives the notching female die 10 and the compression rubber 7 to jointly generate a downward rigid force for the compression ring 8, and the conical surface of the conical thin-walled part is punched. Then, one side of the trimming die 10, which is close to the conical surface of the tapered thin-walled part, also starts to contact the conical surface of the tapered thin-walled part, and the conical surface of the tapered thin-walled part, which is close to the trimming die 10, is stamped. One side of the pressing ring 8, which is close to the ring body 15, is slightly lower than one side of the trimming die 10, which is close to the ring body 15, so that when the pressing ring 8 and the trimming die 10 move downwards together, the pressing ring 8 presses the conical surface of the tapered thin-wall part on the ring body 15 first, and one side of the conical surface of the tapered thin-wall part, which is close to the trimming die 10, is attached to the ring body 15 first, so that one side of the conical surface of the tapered thin-wall part, which is close to the trimming die 10, can also be close to and attached to the ring body 15, and then when the tapered thin-wall part is stamped from one side of the trimming die 10, which is close to the ring body 15, the conventional conical surface integration is used for stamping the tapered thin-wall part as the tapered thin-wall part cannot be correctly installed on a lower die holder according to requirements, and therefore an error exists in the size of a finished disc. In addition, the stamping of the conical surfaces in sequence is lower than the stamping force of an integrated stamping conical surface to an external stamping machine, and the stamping device can be applied to stamping machines with low stamping force. .
After the conical surface of the conical thin-walled part is punched, the compression rubber 7 is extruded, the upper end face is cut by the outer side of the notching male die 13 and the inner side of the notching female die 6, and an opening is punched at the upper end of the conical thin-walled part; because the cushion rubber ring 19 is extruded, the lower end face is cut by the outer side of the trimming punch 18 and the inner side of the trimming punch die 10, the edge of the target disc and the bulge on the edge are cut at the edge of the lower end face of the conical thin-walled part, and meanwhile, the material pushing plate 12 contacts the upper end of the trimming punch 18, so that the material pushing plate 12 is forced to extrude the material pushing rubber ring 11 upwards, and the edge residue and the material breakage of the lower end face of the punched disc are waited to be pushed away. Because the whole conical thin-wall piece is pressed on the lower die seat and then simultaneously blanked on the upper end face and the lower end face of the conical thin-wall piece, the concentricity of the upper end face and the lower end face of the disc can be ensured to be consistent, and an additional laser cutting and clamping device is not needed.
And step three, after the punching is finished, the upper die base moves upwards to be away from the lower die base, the extruded buffer rubber ring 19 starts to restore to the original state, and the ring body 15 is pushed upwards to return to the position before the punching. The material pushing plate 12 moves downwards to push the residual material and the broken material at the edge of the lower end face of the disc because the material pushing rubber ring 11 is restored to the original state. The upper end of the ejector rod 3 pushes against a cross rod of an external punch to move downwards, and the residual material and the broken material on the inner side of the opening of the upper end surface of the punched disc are pushed away. Finally, a complete disc as shown in fig. 2 is formed.
The parts comprise a notching male die 13, a notching female die 6, a pressing ring 8, a ring body 15, an edge notching male die 18 and an edge notching female die 10 which are fixed into separate parts by screws, and are easy to adjust in the using process so as to control the precision of the disc or replace and damage the separate parts, thereby providing a foundation for high-efficiency stamping.
Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (9)
1. An apparatus for machining a tapered, thin-walled part, comprising: comprises an upper die holder and a lower die holder for placing a conical thin-walled part to be processed, wherein one side of the upper die holder close to the lower die holder is provided with a concave part, one side of the lower die holder close to the upper die holder is provided with a convex part, when the upper die holder is close to the lower die holder for stamping, a space for processing and forming the conical thin-walled part is formed between the concave part and the convex part,
the upper die base comprises an upper die base, a compression ring, an edge punching female die and a notching female die, the compression ring, the edge punching female die and the notching female die are connected to one side, close to the lower die base, of the upper die base, one sides, close to the lower die base, of the compression ring and the edge punching female die form a concave part of the upper die base, and the notching female die, close to one side of the lower die base, of the compression ring is arranged above one side, close to the lower die base, of the notching female die, so that the conical thin-walled piece is firstly pressed on the lower die base and then the upper port of the conical thin-walled piece is blanked;
the lower die base comprises a lower die base, a ring body, a trimming punch and a notching punch, the ring body, the trimming punch and the notching punch are connected to one side of the lower die base, which is close to the upper die base, the notching punch and the ring body form a bulge of the lower die base, and the trimming punch is annularly arranged on the outer side of the ring body;
the pressing ring and the ring body are corresponding in position, one side of the pressing ring close to the ring body is matched with one side of the ring body close to the pressing ring, and a conical gap is formed between the ring body and the pressing ring, so that a conical surface is punched on one side of a conical thin-wall part to be machined, which is placed on the lower die base, close to the pressing ring;
the notching male die and the notching female die correspond to each other in position, and the shape and the profile of the outer diameter of the notching male die are matched with the shape and the profile of the inner diameter of the notching female die;
the edge punching male die and the edge punching female die correspond to each other in position, and the outer diameter of the edge punching male die is matched with the shape and the outline of the inner diameter of the edge punching female die.
2. Apparatus for machining a tapered thin walled part according to claim 1 wherein: the distance between one side of the compression ring close to the ring body and the ring body is smaller than the distance between one side of the trimming die close to the ring body and the ring body.
3. Apparatus for machining a tapered thin walled part according to claim 2 wherein: the upper die base further comprises an ejector rod and a rod sleeve, the rod sleeve is connected to the upper die base, one end of the ejector rod is connected to the rod sleeve, the other end of the ejector rod is arranged on one side, close to the lower die base, of the upper die base, and the outline of one side, close to the punching female die, of the punching female die is matched with the outline of one side, close to the ejector piece, of the punching female die.
4. Apparatus for machining a tapered thin walled part according to claim 3 wherein: the die holder still includes the cushion rubber circle, and the cushion rubber circle sets up between ring body and lower mould base, and the one end and the ring body that are close to the ring body of cushion rubber circle are connected, and the one end and the lower mould pedestal connection that the cushion rubber circle is close to the lower mould base.
5. Apparatus for machining a tapered, thin-walled part according to claim 4, wherein: the blanking die is still including dashing limit die retainer plate, dashes limit die retainer plate and sets up between dashing limit die and last die base, dashes limit die retainer plate and is close to the one end and the last die base connection of last die base, dashes the one end that limit die retainer plate is close to the die holder and dashes limit die connection.
6. Apparatus for machining a tapered thin walled member according to claim 5 wherein: the blanking male die further comprises a trimming male die fixing plate, the trimming male die fixing plate is arranged on the outer side of the trimming male die in a surrounding mode, a protruding block extending towards the trimming male die is arranged on the trimming male die, the trimming male die is provided with a groove matched with the shape of the protruding block of the trimming male die, and the trimming male die fixing plate is connected to one side, close to the upper die base, of the lower die base.
7. Apparatus for machining a tapered thin walled member according to claim 6 wherein: the die comprises a die holder, a die fixing ring and a die edge punching die, and is characterized by further comprising a material pushing plate, wherein the material pushing plate is connected to one side of the die edge punching die fixing ring close to the die holder, and one side of the material pushing plate close to the die edge punching die is tangent to a conical thin-wall piece to be processed.
8. Apparatus for machining a tapered thin walled member according to claim 7 wherein: the lower die base also comprises a centering block, the centering block is connected to one end, close to the upper die base, of the center of the lower die base, and the centering block is provided with a protrusion extending towards the upper die base, and the protrusion has the same shape as a preset hole in the center of a conical thin-walled part to be machined.
9. A method for machining a tapered thin-walled part based on the apparatus for machining a tapered thin-walled part according to claim 8, characterized in that:
firstly, an upper die base punches towards a lower die base, a compression ring of the upper die base punches towards a ring body of the lower die base, so that one side, close to the compression ring, of a conical surface of a conical thin-wall part is pressed onto the ring body, meanwhile, the compression ring punches one side, close to the compression ring, of the conical thin-wall part, the conical surface of one side, close to the compression ring, of the conical thin-wall part is punched, then, one side, close to the conical surface of the conical thin-wall part, of a trimming female die of the upper die base also starts to contact with the conical surface of the conical thin-wall part, and the conical surface of one side, close to the trimming female die, of the conical thin-wall part is punched;
after the conical surface of the conical thin-walled part is punched, shearing the upper end surface of the conical thin-walled part together by the outer side of the notching male die of the lower die holder and the inner side of the notching female die of the upper die holder, and shearing the edge of the lower end surface of the conical thin-walled part by the outer side of the trimming male die of the lower die holder and the inner side of the trimming female die of the upper die holder;
and step three, after the upper die base is punched and is far away from the lower die base, the material pushing rod of the upper die base pushes away the residual materials and the broken materials on the upper end surface of the conical thin-walled part, and meanwhile, the material pushing plate of the upper die base pushes away the residual materials and the broken materials on the edge of the lower end surface of the conical thin-walled part.
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| JP3592758B2 (en) * | 1994-09-16 | 2004-11-24 | 日高精機株式会社 | Manufacturing dies for heat exchanger fins |
| EP1535676B1 (en) * | 2002-06-18 | 2008-05-28 | AMADA Company, Ltd. | Die |
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| CN103599987B (en) * | 2013-09-30 | 2015-12-02 | 大连益联金属成型有限公司 | A kind of production particular manufacturing craft group of cone work-piece |
| CN103480746A (en) * | 2013-09-30 | 2014-01-01 | 大连益联金属成型有限公司 | Coned workpiece stretching mold |
| CN204700137U (en) * | 2015-01-14 | 2015-10-14 | 燕山大学 | With the conical part Drawing Die of unsettled sidewall clamping device |
| CN104772386B (en) * | 2015-03-17 | 2016-11-23 | 浙江金固股份有限公司 | A kind of wheel spoke processing method |
| CN106391859A (en) * | 2016-09-28 | 2017-02-15 | 哈尔滨建成集团有限公司 | Forming die for demisemi conical barrel with two mutually perpendicular panels |
| CN107900202B (en) * | 2017-12-21 | 2023-10-27 | 安徽省华夏机床制造有限公司 | Special punching device for conical cylindrical workpiece and application method of special punching device |
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| US3583266A (en) * | 1968-04-11 | 1971-06-08 | Kazuyoshi Kondo | Shearing process |
| JP2007118017A (en) * | 2005-10-26 | 2007-05-17 | Daihatsu Motor Co Ltd | Double-action press device and press method |
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