CN110976610A - Blanking equipment and blanking method for workpiece with comb tooth structure - Google Patents
Blanking equipment and blanking method for workpiece with comb tooth structure Download PDFInfo
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- CN110976610A CN110976610A CN201911133382.4A CN201911133382A CN110976610A CN 110976610 A CN110976610 A CN 110976610A CN 201911133382 A CN201911133382 A CN 201911133382A CN 110976610 A CN110976610 A CN 110976610A
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- 244000126211 Hericium coralloides Species 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010008 shearing Methods 0.000 claims abstract description 63
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000004080 punching Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention discloses blanking equipment for a workpiece with a comb tooth structure, which comprises a blanking punch, a blanking concave die plate, a shearing punch and a shearing knife edge workpiece, wherein the blanking punch is arranged on the blanking concave die plate; the blanking concave die plate is provided with a concave die knife edge; the blanking punch can be matched with the blanking concave die plate to be used for blanking the external material belt so as to punch out a workpiece; the blanking punch is provided with an avoidance groove; the avoiding groove is used for avoiding the external material belt when the blanking punch head and the blanking concave die plate are matched to punch a workpiece, so that the blanking punch head is not matched with the female die knife edge to blank the part of the external material belt, which is opposite to the avoiding groove, and the part, which is opposite to the avoiding groove, forms a connecting part for connecting the workpiece and the external material belt; the shearing punch head can be matched with the shearing tool opening workpiece to shear the connecting part, so that the workpiece is separated from the external material belt. The invention can avoid the die cutting edge from being broken and avoid the abrasion between the blanking punch and the blanking die plate. The invention also discloses a blanking method of the workpiece with the comb tooth structure.
Description
Technical Field
The invention relates to blanking equipment, in particular to blanking equipment and a blanking method for a workpiece with a comb tooth structure.
Background
At present, for some workpieces with a comb structure (the comb structure refers to a structure with at least two tooth roots), for example, a limiting part of an automobile guide rail as shown in fig. 2, the requirement on the precision is high during processing, and smooth, burr-free, notch-free and integral processing without joint marks must be ensured. In order to meet the technological requirements of the product, a processing technology of blanking once is often adopted; however, in the existing blanking apparatus for blanking the workpiece with the comb-tooth portion, the die blade b of the blanking die plate a has a shape adapted to the structure of the workpiece with the comb-tooth structure, that is, as shown in fig. 1, the die blade b has a long strip portion (as shown by reference character c in fig. 1) in a suspended state, and when a primary blanking mode is adopted, the blanking force is too large at this time, which easily causes the die blade to be broken; therefore, a two-time blanking mode is also adopted at present, but the two-time blanking mode is limited by the existing blanking equipment, when in blanking, a punch of the blanking equipment is adopted to firstly and integrally blank a certain thickness, for example, the thickness of a workpiece is 10cm, the first blanking is 9.8cm, then the punch moves downwards again along a knife edge of a concave template of the blanking equipment to further blank and separate the workpiece and the material belt, and the second blanking thickness is 0.2 cm; however, in the second punching, the punch needs to be completely matched with the edge of the cavity plate, and the punch is easily damaged due to friction during the movement along the cavity plate due to mechanical vibration and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a blanking device for a workpiece with a comb tooth structure, and the invention aims to provide a blanking method for the workpiece with the comb tooth structure, which can avoid the die cutting edge from being broken and avoid abrasion between a blanking punch and a blanking die plate.
One of the purposes of the invention is realized by adopting the following technical scheme:
a blanking device for a workpiece with a comb tooth structure comprises a blanking punch, a blanking concave die plate, a shearing punch and a shearing knife edge workpiece; the blanking concave die plate is provided with a concave die knife edge; the blanking punch can move relative to the blanking die plate and can be matched with the blanking die plate during relative movement to blank an external material belt so as to punch a workpiece; the blanking punch is provided with an avoidance groove; the avoidance groove is used for avoiding an external material belt when the blanking punch and the blanking concave die plate are matched to blank a workpiece, so that the blanking punch is not matched with the die knife edge to blank the part of the external material belt, which is over against the avoidance groove, and the part of the external material belt, which is over against the avoidance groove, forms a connecting part for connecting the workpiece and the external material belt; the shearing punch head can move relative to the shearing tool edge workpiece, and can be matched with the shearing tool edge workpiece to shear the connecting part during relative movement, so that the workpiece is separated from an external material belt.
Further, the avoidance groove has a side opening and a lower opening; the distance between the surface of the blanking punch where the top end of the side opening is located and the bottom surface of the blanking punch is larger than the thickness of the outer material belt.
Further, the blanking punch comprises a connecting plate and a plurality of tooth roots; the tooth roots are sequentially arranged at intervals along the length direction of the connecting plate and are all fixed on the connecting plate; the avoiding groove is formed in the connecting plate.
Further, the shearing punch head can do linear motion relative to the shearing knife-edge workpiece, so that the side surface of the shearing punch head is tangent to or separated from the side surface of the shearing knife-edge workpiece; the length of the shearing punch is greater than or equal to the length of the side opening.
Further, the bottom end of the female die knife edge is flush with the bottom end of the blanking female die plate; the blanking equipment for the workpiece with the comb tooth structure further comprises a supporting base plate, and the supporting base plate supports the blanking die plate and the die knife edge.
Further, the blanking punch is opposite to the blanking concave die plate; the blanking punch can move relative to the blanking concave die plate so as to enable the blanking punch and the concave die blade to be matched, inserted and separated.
Further, the blanking equipment for the workpiece with the comb tooth structure further comprises a top supporting plate and a linear driving mechanism; the cross section of the top supporting plate and the cross section of the workpiece are the same in shape and size; the top supporting plate is matched and inserted with the female die knife edge and can move along the movement direction of the blanking punch head relative to the blanking female die plate; the linear driving mechanism is used for driving the jacking plate to move.
The second purpose of the invention is realized by adopting the following technical scheme:
the blanking method for the workpiece with the comb tooth structure adopts the blanking device for the workpiece with the comb tooth structure to perform blanking on the workpiece, and further comprises the following steps of:
blanking: the material belt is placed between a blanking punch and a blanking concave die plate, the blanking punch and the blanking concave die plate are matched to perform blanking on the material belt, a workpiece with the required thickness is blanked, and the workpiece is connected with an external material belt through a connecting part;
demoulding: separating the workpiece from the blanking punch and the blanking die plate;
a shearing step; and cutting off the part of the connecting part connected with the external material belt by matching the shearing punch and the shearing tool opening workpiece to obtain the workpiece separated from the external material belt.
Further, the blanking equipment for the workpiece with the comb tooth structure further comprises a top supporting plate and a linear driving mechanism; the cross section of the top supporting plate and the cross section of the workpiece are the same in shape and size; the top supporting plate is matched and inserted with the female die knife edge and can move along the movement direction of the blanking punch head relative to the blanking female die plate; the linear driving mechanism is used for driving the jacking plate to move; in the blanking step, a top supporting plate is supported on one side of the material belt, which is far away from the blanking punch, and the top supporting plate is driven by a linear driving mechanism to move along the direction the same as the moving direction of the blanking punch along with the movement of the blanking punch.
Further, in the demoulding step, the blanking punch is separated from the blanking concave die plate, and the top supporting plate is driven by the linear driving mechanism to push the blanking workpiece to be separated from the blanking concave die plate.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the avoiding groove is arranged on the blanking punch head, and the required blanking area can be reduced through the avoiding groove, so that the required blanking force when a workpiece is completely blanked is reduced, and the die knife edge can be prevented from being broken; and in addition, the shearing punch and the shearing knife edge workpiece are arranged and are aligned to shear the outer material belt part of the avoidance groove, at the moment, the secondary blanking is not required to be carried out by adopting the blanking punch again, and the blanking punch does not need to move as the blanking concave die plate again, so that the abrasion of the blanking punch and the blanking concave die plate can be avoided.
Drawings
Fig. 1 is a schematic structural view of a blanking cavity plate of a conventional blanking device;
FIG. 2 is a schematic structural diagram of a conventional automobile guide rail limiting component;
FIG. 3 is an assembly structure diagram of the blanking device for the workpiece with the comb tooth structure;
FIG. 4 is a schematic diagram of a disassembled structure of the blanking device for the workpiece with the comb tooth structure;
fig. 5 is a schematic structural view of a blanking punch according to the present invention;
fig. 6 is a schematic view showing a structure in which the blanking punch and the knock-out plate are engaged with each other according to the present invention.
In the figure: 10. blanking a punch; 11. a connecting plate; 12. a tooth root; 13. an avoidance groove; 20. blanking the concave die plate; 21. a female die blade; 30. shearing the punch; 40. shearing a tool opening workpiece; 50. a top pallet; 60. a linear drive mechanism; 70. a support pad; 80. a workpiece; 90. a material belt; 100. a connecting portion.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
A blanking device of a workpiece with a comb tooth structure as shown in fig. 3-6, comprising a blanking punch 10, a blanking die plate 20, a shearing punch 30, a shearing die workpiece 40; the blanking die plate 20 has a die blade 21; the blanking punch 10 can move relative to the blanking die plate 20 and can cooperate with the blanking die plate 20 in the relative movement for blanking the outer material strip 90 to blank out the workpiece 80; the blanking punch 10 is provided with an avoidance groove 13; the avoiding groove 13 is used for avoiding the outer material belt 90 when the blanking punch 10 cooperates with the blanking die plate 20 to blank the workpiece 80, so that the blanking punch 10 does not cooperate with the die blade 21 to blank the part of the outer material belt 90 facing the avoiding groove 13, and the part of the outer material belt 90 facing the avoiding groove 13 forms a connecting part 100 for connecting the workpiece 80 and the outer material belt 90; the shear punch 30 is capable of relative movement with the shear-notch workpiece 40 and, upon relative movement, is capable of cooperating with the shear-notch workpiece 40 for shearing the joint 100 to disengage the workpiece 80 from the outer strip of material 90.
On the basis of the structure, by using the blanking device for the workpiece with the comb tooth structure, firstly, the outer material belt 90 is placed between the blanking punch 10 and the blanking die plate 20, and the blanking punch 10 and the blanking die plate 20 are adopted to perform relative motion, so that the blanking punch 10 and the blanking die plate 20 punch the workpiece 80 with a required thickness on the outer material belt 90, where it is to be noted that the thickness of the workpiece 80 is the same as that of the material belt 90, and the required thickness is the thickness of the material belt 90; at this time, since the avoiding groove 13 avoids the outer material belt 90, the part of the workpiece 80 facing the avoiding groove 13 through the outer material belt 90 is connected with the outer material belt 90; then, the part of the outer material strip 90 with the workpiece 80 is placed between the shearing punch 30 and the shearing notch workpiece 40, and the shearing punch 30 and the shearing notch workpiece 40 are relatively moved, so that the connecting part 100 is sheared, and the workpiece 80 separated from the outer material strip 90 is obtained; as can be seen from the above, by forming the avoiding groove 13, so that, when the blanking punch 10 punches the workpiece 80, the material strip 90 can be omitted from being punched against the avoiding groove 13, thereby reducing the blanking force required for punching the workpiece 80 with the required thickness at a time, and further avoiding the breaking of the knife edge of the blanking die plate 20, and then, the cooperation of the shearing punch 30 and the shearing knife edge workpiece 40 is adopted to shear the connecting portion 100, at this time, the secondary blanking by adopting the blanking punch 10 is not required, and the movement of the blanking punch 10 equivalent to the blanking die plate 20 again is not required, thereby avoiding the abrasion of the blanking punch 10 and the blanking die plate 20.
It can be understood here that the blanking punch 10, when not provided with the escape groove 13, has a cross-sectional shape and dimensions that are the same as those of the cross-sectional shape and dimensions of the workpiece 80 having the comb tooth structure; and the shape and the size of the cross section of the female die blade 21 are matched with the shape and the size of the blanking punch 10 without the avoidance groove 13.
Specifically, the avoiding groove 13 has a side opening and a lower opening, so that the side surface of the punching head 10 where the avoiding groove 13 is formed is recessed inwards by forming the side opening, so as not to be tangent to the die blade 21, and further, the part of the external material belt 90 facing the avoiding groove 13 can be prevented from being punched, specifically, the distance K between the surface of the punching head 10 where the top end of the side opening is located and the bottom surface of the punching head 10 is greater than the thickness of the external material belt 90, and it can be ensured that the part of the external material belt 90 facing the avoiding groove 13 is not punched in the process of punching the workpiece 80 with the required thickness; further, the lower opening is provided such that a portion of the outer material strip 90 facing the escape groove 13 can be temporarily accommodated in the escape groove 13 while relatively moving with the blanking punch 10 and the blanking die plate 20.
The lower opening is a port that faces parallel to the direction of relative movement between the blanking punch 10 and the blanking die plate 20, and the side opening is a port that faces perpendicular to the direction of relative movement between the blanking punch 10 and the blanking die plate 20.
Further, the blanking punch 10 comprises a connecting plate 11 and a plurality of tooth roots 12; a plurality of tooth roots 12 are sequentially arranged at intervals along the length direction of the connecting plate 11 and are all fixed on the connecting plate 11; the avoidance groove 13 is formed in the connecting plate 11 to ensure smoothness of a comb tooth structure of the blanked workpiece 80; more specifically, the length of the root 12 is greater than its width.
Specifically, the shearing punch 30 can move linearly relative to the shearing notch workpiece 40, so that the side surface of the shearing punch 30 is tangent to or separated from the side surface of the shearing notch workpiece 40, it should be noted that the side surface of the shearing punch 30 is a surface parallel to the moving direction of the shearing punch 30 and the shearing punch 30, and the side surface of the shearing notch workpiece 40 is a surface parallel to the moving direction of the shearing notch workpiece 40 and the shearing punch 30; thus, the outer material strip 90 with the workpiece 80 is horizontally placed between the shearing punch 30 and the shearing notch workpiece 40, and the edge (e.g., edge d shown in fig. 4) of the connecting portion 100 connected to the outer material strip 90 coincides with the tangent line of the shearing punch 30 and the shearing notch workpiece 40, and then the shearing punch 30 is driven to move, so that the connecting portion 100 and the outer material strip 90 can be cut off, that is, the workpiece 80 and the outer material strip 90 can be cut off; the length of the shearing punch 30 is greater than or equal to the length of the side opening; the length of the shear punch 30 refers to a dimension of the side surface of the shear punch 30 perpendicular to the moving direction of the shear punch 30; during blanking, the shearing punch 30 can completely shear the portion of the outer material strip 90 facing the evasive opening during blanking, so that the workpiece 80 can be completely separated from the outer material strip 90.
Further, the bottom end of the female die blade 21 is flush with the bottom end of the blanking female die plate 20; the blanking equipment for the workpiece with the comb tooth structure further comprises a supporting base plate 70, wherein the supporting base plate 70 supports the blanking die plate 20 and the die knife edge 21, the die knife edge 21 is further supported through the supporting base plate 70, the blanking force applied to the die knife edge 21 can be borne, and the die knife edge 21 is further prevented from being broken by the blanking force.
Specifically, the blanking punch 10 faces the blanking die plate 20; the blanking punch 10 can be moved relative to the blanking die plate 20 in order to engage and disengage the blanking punch 10 with and from the die blade 21.
Further, the blanking device for the workpiece with the comb tooth structure further comprises a top supporting plate 50 and a linear driving mechanism 60; the cross-section of the top pallet 50 is the same shape and size as the cross-section of the workpiece 80; the top supporting plate 50 is matched and inserted with the female die blade 21 and can move along the movement direction of the blanking punch 10 relative to the blanking female die plate 20; the linear driving mechanism 60 is used for driving the top supporting plate 50 to move; therefore, in the blanking process of the blanking punch 10, the linear driving mechanism 60 is adopted to drive the top supporting plate 50 to move towards the direction same as the moving direction of the blanking punch 10, and at the moment, the top supporting plate 50 is in contact with the female die blade 21, so that the blanking force borne by the female die blade 21 can be received, the strength of the female die blade 21 is further enhanced, and the possibility that the female die blade 21 is bent or broken is reduced; further, after blanking is completed, the formed workpiece 80 may be pushed out of the blanking die plate 20 by cooperation of the top plate 50 and the linear drive mechanism 60.
The linear driving mechanism 60 may be an existing air cylinder, hydraulic cylinder, or linear motor.
The invention also discloses a blanking method of the workpiece with the comb tooth structure, which adopts the blanking device of the workpiece with the comb tooth structure to perform blanking on the workpiece 80 and comprises the following steps:
blanking: placing the material belt 90 between the blanking punch 10 and the blanking die plate 20, blanking the material belt 90 by matching the blanking punch 10 and the blanking die plate 20, blanking a workpiece 80 with a required thickness, and connecting the workpiece 80 with the external material belt 90 through a connecting part 100;
demoulding: separating the workpiece 80 from the blanking punch 10 and the blanking die plate 20;
a shearing step; the part of the connecting part 100 connected with the outer material belt 90 is cut off by matching the shearing punch 30 and the shearing notch workpiece 40, and the workpiece 80 separated from the outer material belt 90 is obtained.
Further, the blanking device for the workpiece with the comb tooth structure further comprises a top supporting plate 50 and a linear driving mechanism 60; the cross-section of the top pallet 50 is the same shape and size as the cross-section of the workpiece 80; the top supporting plate 50 is matched and inserted with the female die blade 21 and can move along the movement direction of the blanking punch 10 relative to the blanking female die plate 20; the linear driving mechanism 60 is used for driving the top supporting plate 50 to move; in the blanking step, the top supporting plate 50 is supported on the side of the material strip 90 away from the blanking punch 10, and along with the movement of the blanking punch 10, the top supporting plate 50 is driven by the linear driving mechanism 60 to move along the same direction as the movement direction of the blanking punch 10.
Further, in the demolding step, the blanking punch 10 is separated from the blanking die plate 20, and the linear driving mechanism 60 is used to drive the top supporting plate 50 to push the blanking workpiece 80 to be separated from the blanking die plate 20.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a blanking equipment of work piece with broach structure which characterized in that: comprises a blanking punch, a blanking concave die plate, a shearing punch and a shearing knife edge workpiece; the blanking concave die plate is provided with a concave die knife edge; the blanking punch can move relative to the blanking die plate and can be matched with the blanking die plate during relative movement to blank an external material belt so as to punch a workpiece; the blanking punch is provided with an avoidance groove; the avoidance groove is used for avoiding an external material belt when the blanking punch and the blanking concave die plate are matched to blank a workpiece, so that the blanking punch is not matched with the die knife edge to blank the part of the external material belt, which is over against the avoidance groove, and the part of the external material belt, which is over against the avoidance groove, forms a connecting part for connecting the workpiece and the external material belt; the shearing punch head can move relative to the shearing tool edge workpiece, and can be matched with the shearing tool edge workpiece to shear the connecting part during relative movement, so that the workpiece is separated from an external material belt.
2. The blanking apparatus of a workpiece having a comb tooth structure according to claim 1, wherein: the avoidance groove is provided with a side opening and a lower opening; the distance between the surface of the blanking punch where the top end of the side opening is located and the bottom surface of the blanking punch is larger than the thickness of the outer material belt.
3. The blanking apparatus of the workpiece having the comb-tooth structure according to claim 2, wherein: the blanking punch comprises a connecting plate and a plurality of tooth roots; the tooth roots are sequentially arranged at intervals along the length direction of the connecting plate and are all fixed on the connecting plate; the avoiding groove is formed in the connecting plate.
4. The blanking apparatus of the workpiece having the comb-tooth structure according to claim 2, wherein: the shearing punch can do linear motion relative to the shearing tool opening workpiece, so that the side surface of the shearing punch is tangent to or separated from the side surface of the shearing tool opening workpiece; the length of the shearing punch is greater than or equal to the length of the side opening.
5. The blanking apparatus of a workpiece having a comb tooth structure according to claim 1, wherein: the bottom end of the female die knife edge is flush with the bottom end of the blanking female die plate; the blanking equipment for the workpiece with the comb tooth structure further comprises a supporting base plate, and the supporting base plate supports the blanking die plate and the die knife edge.
6. The blanking apparatus of a workpiece having a comb tooth structure according to claim 1, wherein: the blanking punch is opposite to the blanking concave die plate; the blanking punch can move relative to the blanking concave die plate so as to enable the blanking punch and the concave die blade to be matched, inserted and separated.
7. The blanking apparatus of the workpiece having the comb tooth structure according to claim 6, wherein: the blanking equipment for the workpiece with the comb tooth structure further comprises a top supporting plate and a linear driving mechanism; the cross section of the top supporting plate and the cross section of the workpiece are the same in shape and size; the top supporting plate is matched and inserted with the female die knife edge and can move along the movement direction of the blanking punch head relative to the blanking female die plate; the linear driving mechanism is used for driving the jacking plate to move.
8. A blanking method of a workpiece with a comb tooth structure is characterized in that: the blanking apparatus for the workpiece having the comb tooth structure according to any one of claims 1 to 5, further comprising the steps of:
blanking: the material belt is placed between a blanking punch and a blanking concave die plate, the blanking punch and the blanking concave die plate are matched to perform blanking on the material belt, a workpiece with the required thickness is blanked, and the workpiece is connected with an external material belt through a connecting part;
demoulding: separating the workpiece from the blanking punch and the blanking die plate;
a shearing step; and cutting off the part of the connecting part connected with the external material belt by matching the shearing punch and the shearing tool opening workpiece to obtain the workpiece separated from the external material belt.
9. The blanking method of the workpiece having the comb-tooth structure according to claim 8, wherein: the blanking equipment for the workpiece with the comb tooth structure further comprises a top supporting plate and a linear driving mechanism; the cross section of the top supporting plate and the cross section of the workpiece are the same in shape and size; the top supporting plate is matched and inserted with the female die knife edge and can move along the movement direction of the blanking punch head relative to the blanking female die plate; the linear driving mechanism is used for driving the jacking plate to move; in the blanking step, a top supporting plate is supported on one side of the material belt, which is far away from the blanking punch, and the top supporting plate is driven by a linear driving mechanism to move along the direction the same as the moving direction of the blanking punch along with the movement of the blanking punch.
10. The blanking method of the workpiece having the comb-tooth structure according to claim 9, wherein: in the demoulding step, the blanking punch is separated from the blanking concave die plate, and the top supporting plate is driven by a linear driving mechanism to push the blanking workpiece to be separated from the blanking concave die plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133382.4A CN110976610B (en) | 2019-11-19 | 2019-11-19 | Punching equipment and punching method for workpiece with comb tooth structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133382.4A CN110976610B (en) | 2019-11-19 | 2019-11-19 | Punching equipment and punching method for workpiece with comb tooth structure |
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| Publication Number | Publication Date |
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| CN110976610A true CN110976610A (en) | 2020-04-10 |
| CN110976610B CN110976610B (en) | 2024-09-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112845802A (en) * | 2021-03-05 | 2021-05-28 | 合兴汽车电子股份有限公司 | Blanking assembly, blanking die and blanking process |
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| CN1451513A (en) * | 2002-04-19 | 2003-10-29 | 松下电工股份有限公司 | Method for making edge of hairdressing shears |
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| CN112845802A (en) * | 2021-03-05 | 2021-05-28 | 合兴汽车电子股份有限公司 | Blanking assembly, blanking die and blanking process |
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| CN110976610B (en) | 2024-09-17 |
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