CN116967355B - Continuous stamping forming process for preventing oil cup support from being broken - Google Patents
Continuous stamping forming process for preventing oil cup support from being broken Download PDFInfo
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- CN116967355B CN116967355B CN202311241525.XA CN202311241525A CN116967355B CN 116967355 B CN116967355 B CN 116967355B CN 202311241525 A CN202311241525 A CN 202311241525A CN 116967355 B CN116967355 B CN 116967355B
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- bending
- positioning hole
- long arm
- shaped
- oil cup
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000008569 process Effects 0.000 title claims abstract description 29
- 238000005452 bending Methods 0.000 claims abstract description 58
- 238000004080 punching Methods 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 238000007493 shaping process Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000009966 trimming Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 24
- 239000002699 waste material Substances 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000004049 embossing Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention belongs to the technical field of stamping processing, and relates to an anti-breaking continuous stamping forming process of an oil cup support, which comprises the following steps: punching a positioning hole, punching a bulge, trimming, bending the outer side, bending the inner side, pressing an arc surface, shaping and blanking; the outer bending step is to bend the tail end of the long arm preformed area by 90 degrees to form a vertical bending surface; the inner side bending step is to bend the conveying reference surface to form a central surface and a long arm, wherein the bending angle of the long arm relative to the central surface is 40-60 degrees downwards; and bending the vertical bending surface to form a transition plane and a downward bent arc surface in the arc surface pressing step. The forming process adopts a method of bending the long arm downwards by 40-60 degrees relative to the central surface, then pressing the cambered surface, and finally adjusting the bending angle of the long arm and the central surface to a design angle, so that the problems of the arc surface being broken due to too small punching area and too large rigidity of a transition plane are avoided, and the product percent of pass is improved.
Description
Technical Field
The invention relates to the technical field of stamping processing, in particular to an anti-breaking continuous stamping forming process for an oil cup support.
Background
The product in fig. 1 is an oil cup support 1, the oil cup support 1 is a metal stamping part in a shape like a Chinese character 'ji', and mainly comprises a central surface 11, a long arm 12, a transition plane 13 and an arc surface 14 which are sequentially arranged on one side of the central surface 11, and a short arm 15 and a step surface 16 which are sequentially arranged on the other side of the central surface 11, wherein the central surface 11, the transition plane 13 and the step surface 16 are mutually parallel, a reinforcing long groove 17 which extends from the long arm 12 to the short arm 15 is arranged on the oil cup support 1, a plurality of fixing holes 18 are arranged on the central surface 11 and the step surface 16, and the arc surface 14 is used for welding an oil cup. The molding difficulty is as follows: in order to adapt to the structure of the arc-shaped surface 14, the transition surface 13 has a structure with a narrow side and a wide side, and the turning range is small, which leads to local high rigidity. The angle of the long arm 12 to the centre plane 11 is approximately 90 deg., and the axis of the arcuate surface 14 is parallel to the long arm 12 surface. However, the arc-shaped surface 14 is deformed from a position parallel to the transition surface 13, and the cutting angle is too large, so that the arc-shaped surface 14 is easily cut.
Chinese patent CN209998187U discloses a stamping progressive die combining multiple processes, wherein a method for forming a "table" shaped stamping is disclosed. However, the main turning edges in the structure of the stamping part are right-angle turning edges and have no transition plane 13 and arc-shaped surface 14 with special structures, so that the forming difficulty is different.
It is therefore necessary to devise a new molding method to solve the above problems.
Disclosure of Invention
The invention mainly aims to provide an anti-punching continuous stamping forming process for an oil cup support, which can obtain the oil cup support and can prevent the positions of a transition surface and a step surface from being cracked.
The invention realizes the aim through the following technical scheme: an anti-break continuous stamping forming process for an oil cup support comprises the following steps:
s1, punching a positioning hole: the method comprises the steps that the head end and two sides of a material belt are used as positioning, two positioning holes are punched in the two sides of the material belt, the range of a processing unit comprises a forming part positioned in the middle of the material belt, a connection retaining part positioned on one side of the material belt, a waste part positioned on the other side of the material belt and positioned between the two forming parts, and a U-shaped waste part positioned between the forming part and the connection retaining part, and the positioning holes comprise a first positioning hole positioned in the range of the connection retaining part and a second positioning hole positioned in the range of the waste part;
s2, embossing: taking the first positioning hole and the second positioning hole as references, punching a section of strip-shaped convex hull in the middle of the forming part;
s3, trimming: cutting off the scrap part and the U-shaped scrap part with the first positioning hole and the second positioning hole as references, leaving a long arm preformed area located at the side of the scrap part and a short arm preformed area located at the inner side of the U-shaped scrap part;
s4, outside bending: taking the first positioning hole as a reference, bending the tail end of the long arm preformed region by 90 degrees to form a vertical bending surface, and bending the tail end of the short arm preformed region by V-shaped to form a conveying reference surface, a short arm and a step surface which are sequentially connected, wherein the bending angle between the conveying reference surface and the short arm is 45 degrees downwards, and the bending angle between the short arm and the step surface is 90 degrees upwards;
s5, bending the inner side: bending the conveying datum plane by taking the first positioning hole as a reference to form a central plane and a long arm, wherein the bending angle of the long arm relative to the central plane is 40-60 degrees downwards;
s6, pressing an arc surface: bending the vertical bending surface to form a transition plane and a downward bent arc surface by taking the first positioning hole as a reference;
s7, shaping: taking the first positioning hole as a reference, further bending and adjusting the turning positions of the central surface and the long arm to form a designed bending angle, wherein the structure of the strip-shaped convex hull is completely changed into a reinforced long groove;
s8, blanking: and cutting the forming part from the connection retaining part by taking the first positioning hole as a reference to obtain a product.
Specifically, in the step of punching the positioning hole, a process hole is also cut in the range of the waste part, and the process hole is cut in one process step after the second positioning hole is cut.
Specifically, the U-shaped scrap portion is cut out in two steps by being divided into two L-shaped scraps.
Further, in the step of bending the inner side, the short arm continues to bend downwards until an included angle with the central plane is right angle.
Furthermore, a fixing hole punching step is further performed between the shaping step and the blanking step, and fixing holes are cut in the center surface and the step surface based on the first positioning holes.
The technical scheme of the invention has the beneficial effects that:
the forming process adopts a method of bending the long arm downwards by 40-60 degrees relative to the central surface, then pressing the cambered surface, and finally adjusting the bending angle of the long arm and the central surface to a design angle, so that the problems of the arc surface being broken due to too small punching area and too large rigidity of a transition plane are avoided, and the product percent of pass is improved.
Drawings
FIG. 1 is a perspective view of an oil cup stand;
fig. 2 is a diagram showing a change in the structure of a material strip in a continuous press forming process (black-painted positions are cut-out positions in the drawing).
Marked in the figure as:
1-an oil cup bracket, 11-a central surface, 12-a long arm, 13-a transition plane, 14-an arc surface, 15-a short arm, 16-a step surface, 17-a reinforced long groove and 18-a fixed hole;
2-material belt, 21-forming part, 211-strip convex hull, 212-conveying datum plane, 213-long arm preformed area, 2131-vertical bending plane, 214-short arm preformed area, 22-connection retaining part, 221-first positioning hole, 23-waste part, 231-second positioning hole, 232-process hole, 24-U-shaped waste part, 241-first L-shaped waste and 242-second L-shaped waste.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Examples:
as shown in fig. 1 and 2, the anti-impact continuous stamping forming process for the oil cup support comprises the following steps:
s1, punching a positioning hole: with the head end and the two sides of the material belt 2 as positioning, a first positioning hole 221, a second positioning hole 231 and a process hole 232 are punched on the two sides of the material belt 2, the processing unit range comprises a forming part 21 positioned in the middle of the material belt 2, a connection retaining part 22 positioned on one side of the material belt 2, a waste part 23 positioned on the other side of the material belt 2 and positioned between the two forming parts 21, and a U-shaped waste part 24 positioned between the forming part 21 and the connection retaining part 22, the first positioning hole 221 is positioned in the connection retaining part 22, and the second positioning hole 231 and the process hole 232 are positioned in the waste part 23.
The first positioning hole 221 and the second positioning hole 222 can provide a positional reference for the subsequent punching. The process hole 232 is close to the second positioning hole 222, but is not for positioning purposes, but is convenient for the material flow in the protruding step, so that the protruding material flows to the middle position more easily, and the situation that the material is pulled to cause the thickness of the material around the strip-shaped protruding hull 211 to be too thin is avoided. The process hole 232 is cut at one step after the second positioning hole 222 is cut, so that the two punches can be separated by a certain distance, and the arrangement of the die is facilitated.
S2, embossing: a section of bar-shaped convex hull 211 is punched in the middle of the forming part 21 with reference to the first positioning hole 221 and the second positioning hole 222.
The strip-shaped convex hull 211 is a rudiment of the reinforced long groove 17 and is used for helping the bent material to perform angle positioning. Because the subsequent bends pass through the strip-shaped convex hull 211, the arched structure resists the rebound deformation of the material.
S3, trimming: the scrap portion 23 and the U-shaped scrap portion 24 are cut off with reference to the first positioning hole 221 and the second positioning hole 222, leaving a long arm preform area 213 located laterally of the scrap portion 23 and a short arm preform area 214 located inside the U-shaped scrap portion 24.
The profile of the scrap portion 23 is the outer profile of the long arm 12 side of the cup holder 1 before molding, and the profile of the U-shaped scrap portion 24 is the outer profile of the short arm 15 of the cup holder 1 before molding. Wherein the U-shaped scrap portion 24 is cut out in two steps by dividing into two L-shaped scraps (first L-shaped scraps 241, second L-shaped scraps 242), so that the cutter can be prevented from being stuck around too much material. After trimming, one side of the connection retaining portion 22 remains continuous, and the subsequent punching can also continue to be positioned by using the first positioning hole 221; the middle portions of the molding portions 21 are connected by the connection retaining portions 22, so that the molding portions 21 are maintained in a flat state flush with the connection retaining portions 22 at this time except for the bar-shaped convex hulls 211.
S4, outside bending: the first positioning hole 221 is used as a reference, a vertical bending surface 2131 is formed by bending at the end 90 ° of the long arm pre-forming area 213, and simultaneously V-shaped bending is performed at the end of the short arm pre-forming area 214, so that a conveying reference surface 212, a short arm 15 and a step surface 16 which are sequentially connected are formed, the bending angle between the conveying reference surface 212 and the short arm 15 is 45 ° downwards, and the bending angle between the short arm 15 and the step surface 16 is 90 ° upwards.
The vertical bending surface 2131 is the structure of the transition plane 13 and the arc surface 14 before forming, and the included angle refers to the designed included angle between the transition plane 13 and the long arm 12. The conveyance reference surface 212 is a structure of the center surface 11 and the long arm 12 before molding. The structure of the short arm 15 and the step surface 16 is the same as that of the oil cup holder 1, except that the angle between the short arm 15 and the conveying reference surface 212 is greater than 90 degrees. In this step, the angle between the short arm 15 and the step surface 16, which are generated by the V-shaped bending, and the horizontal plane is 45 °, but the directions are different, so that the height of the folded edge of the short arm 15 and the step surface 16 relative to the conveying reference surface 212 is relatively low, and the die height can be reduced.
S5, bending the inner side: the conveying datum surface 212 is bent to form a central surface 11 and a long arm 12 by taking the first locating hole 221 as a reference, and the bending angle of the long arm 12 relative to the central surface 11 is 40-60 degrees downwards; while the short arm 15 continues to bend downwards to a right angle to the centre plane 11.
In this step, the angle between the short arm 15 and the center surface 11 is adjusted to the target angle, but the angle between the long arm 12 and the center surface 11 is not completely equal to the design angle, but is inclined downward. Since the vertical bending surface 2131 is vertically upward during the outer bending, the vertical bending surface 2131 is obliquely upward after the inner bending.
S6, pressing an arc surface: the vertical bending surface 2131 is bent to form a transition plane 13 and a downward curved arc surface 14 with reference to the first positioning hole 221.
In the last step, the vertical bending surface 2131 is adjusted to have an included angle of 30-50 degrees with the horizontal plane, compared with a high angle close to 90 degrees, so that the projection range of the action of the punch is larger in the punching process, the impact force is dispersed, the arc-shaped surface 14 is not broken, and the product qualification rate is improved.
S7, shaping: the turning positions of the central surface 11 and the long arm 12 are further bent and adjusted to design bending angles by taking the first positioning hole 221 as a reference, and the structure of the strip-shaped convex hull 211 is completely changed into the reinforced long groove 17.
After finishing the shaping, the included angle between the long arm 12 and the horizontal plane is more than 80 degrees, but because the area of the long arm 12 is larger, the acting surface of the punch is larger, and the problem of punching the long arm 12 and the central surface 11 is avoided. The reinforcing elongated groove 17 can prevent the long arm 12 and the short arm 15 from rebounding in angle on both sides of the center surface 11.
S8, punching a fixing hole: the fixing hole 18 is cut out on the center surface 11 and the step surface 16 with reference to the first positioning hole 221.
The forming section 21 has been deformed into the oil cup holder 1, the oil cup holder 1 being connected to the connection retaining section 22 via the central surface 11. For products with fixing holes 18 on the central surface 11 and the step surface 16, there is a need to add a fixing hole punching step, which can be omitted if there is no fixing hole.
S9, blanking: the molded portion 21 is cut out from the connection retaining portion 22 with reference to the first positioning hole 221, to obtain the oil cup holder 1.
The oil cup holder 1 thus becomes an independent product.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (5)
1. An anti-impact continuous stamping forming process for an oil cup support is characterized by comprising the following steps of: the method comprises the following steps:
s1, punching a positioning hole: the method comprises the steps that the head end and two sides of a material belt are used as positioning, two positioning holes are punched in the two sides of the material belt, the range of a processing unit comprises a forming part positioned in the middle of the material belt, a connection retaining part positioned on one side of the material belt, a waste part positioned on the other side of the material belt and positioned between the two forming parts, and a U-shaped waste part positioned between the forming part and the connection retaining part, and the positioning holes comprise a first positioning hole positioned in the range of the connection retaining part and a second positioning hole positioned in the range of the waste part;
s2, embossing: taking the first positioning hole and the second positioning hole as references, punching a section of strip-shaped convex hull in the middle of the forming part;
s3, trimming: cutting off the scrap part and the U-shaped scrap part with the first positioning hole and the second positioning hole as references, leaving a long arm preformed area located at the side of the scrap part and a short arm preformed area located at the inner side of the U-shaped scrap part;
s4, outside bending: taking the first positioning hole as a reference, bending the tail end of the long arm preformed region by 90 degrees to form a vertical bending surface, and bending the tail end of the short arm preformed region by V-shaped to form a conveying reference surface, a short arm and a step surface which are sequentially connected, wherein the bending angle between the conveying reference surface and the short arm is 45 degrees downwards, and the bending angle between the short arm and the step surface is 90 degrees upwards;
s5, bending the inner side: bending the conveying datum plane by taking the first positioning hole as a reference to form a central plane and a long arm, wherein the bending angle of the long arm relative to the central plane is 40-60 degrees downwards;
s6, pressing an arc surface: bending the vertical bending surface to form a transition plane and a downward bent arc surface by taking the first positioning hole as a reference;
s7, shaping: taking the first positioning hole as a reference, further bending and adjusting the turning positions of the central surface and the long arm to form a designed bending angle, wherein the structure of the strip-shaped convex hull is completely changed into a reinforced long groove;
s8, blanking: and cutting the forming part from the connection retaining part by taking the first positioning hole as a reference to obtain a product.
2. The continuous stamping forming process for preventing the oil cup support from being broken according to claim 1, wherein the process comprises the following steps of: and in the step of punching the positioning holes, a process hole is also cut in the range of the waste part, and the process hole is cut in one process step after the second positioning hole is cut.
3. The continuous stamping forming process for preventing the oil cup support from being broken according to claim 1, wherein the process comprises the following steps of: the U-shaped scrap portion is cut out in two steps by being divided into two L-shaped scraps.
4. The continuous stamping forming process for preventing the oil cup support from being broken according to claim 1, wherein the process comprises the following steps of: in the inner bending step, the short arm continues to be bent downwards until an included angle with the central surface is right angle.
5. The continuous stamping forming process for preventing the oil cup support from being broken according to claim 4, wherein the process comprises the following steps of: and a step of punching a fixing hole is further arranged between the shaping step and the blanking step, and the fixing hole is cut out on the central surface and the step surface by taking the first positioning hole as a reference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311241525.XA CN116967355B (en) | 2023-09-25 | 2023-09-25 | Continuous stamping forming process for preventing oil cup support from being broken |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311241525.XA CN116967355B (en) | 2023-09-25 | 2023-09-25 | Continuous stamping forming process for preventing oil cup support from being broken |
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| Publication Number | Publication Date |
|---|---|
| CN116967355A CN116967355A (en) | 2023-10-31 |
| CN116967355B true CN116967355B (en) | 2024-01-05 |
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| CN202311241525.XA Active CN116967355B (en) | 2023-09-25 | 2023-09-25 | Continuous stamping forming process for preventing oil cup support from being broken |
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| JPH1080728A (en) * | 1996-09-04 | 1998-03-31 | Chiyoda Jidosha Kogyo Kk | Production of fuel tank support for vehicle |
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| CN111654652A (en) * | 2020-05-22 | 2020-09-11 | 江苏凡润电子有限公司 | High-strength backboard of OLED liquid crystal television and processing technology thereof |
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| CN116967355A (en) | 2023-10-31 |
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