CN112775271A - Process method for punching and grooving sheet metal part rubber - Google Patents
Process method for punching and grooving sheet metal part rubber Download PDFInfo
- Publication number
- CN112775271A CN112775271A CN202011552144.XA CN202011552144A CN112775271A CN 112775271 A CN112775271 A CN 112775271A CN 202011552144 A CN202011552144 A CN 202011552144A CN 112775271 A CN112775271 A CN 112775271A
- Authority
- CN
- China
- Prior art keywords
- punching
- rubber
- sheet metal
- metal part
- blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004080 punching Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000002184 metal Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims 1
- 238000005498 polishing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010008 shearing 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
-
- 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
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
-
- 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
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a process method for punching a sheet metal part rubber and manufacturing a groove. S1, designing a female die according to the structure of the sheet metal part, and manufacturing a punching hole and/or a punching groove on the female die and at the corresponding position of a hole and/or a groove of the sheet metal part; s2, after the part blank is placed in the female die, attaching a rubber layer to the part blank, arranging a rubber bulge on the attaching surface of the rubber layer and the part blank, wherein the shape and the position of the rubber bulge correspond to the punching hole and/or the punching groove; and S3, applying pressure to the rubber layer to perform sheet metal forming, wherein the rubber bulge moves towards the punching and/or notching direction on the female die, and the part blank is separated along the edges of the punching and/or notching. The invention has the characteristics of convenient operation, cost saving and high part quality.
Description
Technical Field
The invention belongs to the technical field of sheet metal forming, and relates to a sheet metal part rubber punching and grooving process method.
Background
In order to obtain better performance and stronger maneuverability, the weight of the airplane needs to be greatly reduced, so that sheet metal parts account for a great proportion in the manufacturing of the airplane and are distributed in various parts of the airplane. According to statistics, the sheet metal parts of the second generation machine and the third generation machine account for about 50% of the number of airplane parts. The sheet metal part is provided with more holes or grooves, so that the assembly of finished products, cables and pipes of the airplane can be guaranteed while the weight is reduced.
When processing holes and grooves on sheet metal parts, drilling is usually performed after the parts are formed, and auxiliary completion needs to be performed by using equipment, templates, drilling dies and the like. Because the part is punched and grooved after the forming is finished, the part also generates certain deformation in the punching and grooving process, and the quality of the part is reduced. The use of equipment, templates or drill jigs and the like increases the production cost, increases the processing procedures and further reduces the production efficiency. In particular, it is difficult to form holes or grooves in a profile or in a plane.
Disclosure of Invention
The purpose of the invention is: provides a process method for punching and grooving sheet metal part rubber. The invention has the characteristics of convenient operation, cost saving and high part quality.
The technical scheme of the invention is as follows: a sheet metal part rubber punching and grooving process method comprises the following steps:
s1, designing a female die according to the structure of a sheet metal part, and manufacturing a punching hole and/or a punching groove on the female die and at the corresponding position of a hole and/or a groove of the sheet metal part;
s2, after the part blank is placed in the female die, attaching a rubber layer to the part blank, arranging a rubber bulge on the attaching surface of the rubber layer and the part blank, wherein the shape and the position of the rubber bulge correspond to the punching hole and/or the punching groove;
and S3, applying pressure to the rubber layer to perform sheet metal forming, wherein the rubber bulge moves towards the punching and/or notching direction on the female die, and the part blank is separated along the edges of the punching and/or notching.
In step S2 of the sheet metal part rubber punching and grooving process, the shore a hardness of the rubber protrusion is 60 to 90 degrees.
In step S2 of the sheet metal part rubber punching and grooving process, the thickness of the rubber bulge is 15-30 mm.
In step S2 of the sheet metal part rubber punching and grooving process, the thickness of the part blank is less than or equal to 1.5 mm.
In step S2 of the sheet metal part rubber punching and grooving process, the part blank is not quenched.
In step S2 of the sheet metal part rubber punching and grooving process, the part blank is placed in front of the female die, and the part blank is deburred and polished smooth.
In step S3 of the sheet metal part rubber punching and grooving process, the pressure applied to the rubber layer is 15 to 30 MPa.
In step S3 of the above-mentioned sheet metal part rubber punching and grooving process, the device for applying pressure to the rubber layer is a hydraulic device.
The invention has the advantages that: the sheet metal part rubber punching and grooving process method is convenient to operate and high in efficiency, and the rubber acts on the part blank, so that the surface quality of the part cannot be influenced. The invention can be suitable for processing holes and grooves on a special-shaped surface or special-shaped holes and grooves on a plane, solves the problem of difficulty in processing the holes and grooves, saves the complex procedures of punching and groove making after the part is formed, effectively reduces the production cost, improves the working efficiency and improves the product quality. Compared with the mode of using convex and concave die forming holes and grooves, the investment of one set of die is saved, the method is economical and efficient, and the production cost of enterprises is reduced. The inventor discovers that when the Shore hardness A of the rubber bulge is 60-90 degrees, the thickness of the rubber bulge is 15-30 mm, and/or the punching pressure is 15-30 MPa, the forming quality of the punched hole and/or groove is ideal; however, when the thickness of the part blank exceeds 1.5mm and/or the part blank is quenched, the forming quality of the punched holes and/or grooves is poor, and even the holes and/or grooves are difficult to be successfully punched, and even the punching equipment or the die is damaged, so that safety accidents occur, and the like. Therefore, when the process of the invention is used for punching holes and/or slots, blanks with a thickness of more than 1.5mm are not suitable, and the blanks are not suitable to be quenched before punching.
The application of the process method provided by the invention realizes the quality improvement, cost reduction and efficiency improvement for enterprises, and provides reference in the field of aerospace sheet metal part manufacturing.
Detailed Description
The technical literature and implementation steps of the present invention are described in detail and fully with reference to the following examples, which show that the described examples are only a part of the examples, not all of the examples.
Example 1
A sheet metal part rubber punching and grooving process method comprises the following steps:
s1, designing a female die according to the structure of a sheet metal part, and manufacturing a punching hole and/or a punching groove on the female die and at the corresponding position of a hole and/or a groove of the sheet metal part;
s2, after the part blank is placed in the female die, attaching a rubber layer to the part blank, arranging a rubber bulge on the attaching surface of the rubber layer and the part blank, wherein the shape and the position of the rubber bulge correspond to the punching hole and/or the punching groove;
and S3, applying pressure to the rubber layer to perform sheet metal forming, wherein the rubber layer forms an edge pressing on the part blank at a position corresponding to the edge of the punching hole and/or the notching, and the rubber bulge moves towards the direction of the punching hole and/or the notching to separate the part blank along the edge of the punching hole and/or the notching on the female die.
In the step S2, the shore a hardness of the rubber bump is 60 to 90 degrees. The rubber bulge with the hardness replaces the traditional male die, so that holes and grooves with good quality can be punched, the surface of a sheet metal part cannot be scratched, and the product quality is improved.
In the step S2, the thickness of the rubber protrusion is 15 to 30 mm. The rubber bulge is not suitable to be arranged too high, the fit degree of the rubber layer and the surface of the part blank can be influenced due to too high arrangement, and the fatigue damage of over-stretching of the blank pressing edge around the rubber bulge can be caused during punching, so that the service life of the rubber is influenced; too high also can cause the deformation of the rubber bulge to be too large in the punching process, and influence the quality and the precision of the punched hole/groove; the rubber bulge is not suitable to be too low, and the shearing deformation of the part blank at the edge of the punching hole and/or the punching groove required in punching can not be achieved when the rubber bulge is too low, so that the punching hole and/or the punching groove can not be punched.
In the aforementioned step S2, the thickness of the work blank is less than or equal to 1.5 mm.
In step S2, the blank member is not quenched.
In the foregoing step S2, the blank of the part is placed in front of the female die, and the blank of the part is deburred and polished smooth. The burr is removed before the punching, and smooth polishing is carried out, so that the defect that the forming effect is influenced due to stress concentration and the like of the burr in the punching process is avoided, and the surface of the die is also prevented from being scratched by the burr.
In the step S3, the pressure applied to the rubber layer is 15 to 30 MPa.
In the aforementioned step S3, the device for applying pressure to the rubber layer is a hydraulic device.
Example 2
A sheet metal part rubber punching and grooving process method comprises the following implementation processes:
(1) designing and manufacturing a die for forming a part, and punching and notching the die at positions corresponding to holes and grooves of the part;
(2) clamping the die on hydraulic equipment;
(3) the method comprises the following steps of (1) cleaning burrs of a raw material (part blank), polishing edges of the raw material and placing the raw material on a die;
(4) placing an eraser at the positions of the punching hole and the punching groove of the die;
(5) starting hydraulic equipment for pressing;
(6) closing the hydraulic equipment after pressing is finished, and taking down the rubber and the parts;
(7) and removing burrs of the holes and the grooves of the parts, and polishing the parts smoothly for inspection and delivery.
The process method is convenient to operate, high in working efficiency, stable in quality of the sheet metal parts for punching and grooving and can be completed by only one die. The process method not only saves the cost for manufacturing the special punching and grooving die, but also saves the complicated procedures of punching and grooving after the part is formed, effectively reduces the production cost, improves the working efficiency and improves the product quality.
Claims (8)
1. A sheet metal part rubber punching and grooving process method is characterized by comprising the following steps:
s1, designing a female die according to the structure of a sheet metal part, and manufacturing a punching hole and/or a punching groove on the female die and at the corresponding position of a hole and/or a groove of the sheet metal part;
s2, after the part blank is placed in the female die, attaching a rubber layer to the part blank, arranging a rubber bulge on the attaching surface of the rubber layer and the part blank, wherein the shape and the position of the rubber bulge correspond to the punching hole and/or the punching groove;
and S3, applying pressure to the rubber layer to perform sheet metal forming, wherein the rubber bulge moves towards the punching and/or notching direction on the female die, and the part blank is separated along the edges of the punching and/or notching.
2. The sheet metal part rubber punching and grooving process method as claimed in claim 1, wherein in step S2, the Shore A hardness of the rubber bumps is 60-90 degrees.
3. The sheet metal part rubber punching and grooving process method as claimed in claim 1, wherein in step S2, the thickness of the rubber bulge is 15-30 mm.
4. The sheet metal part rubber punching and grooving process method as claimed in claim 1, wherein in step S2, the thickness of the part blank is less than or equal to 1.5 mm.
5. The sheet metal part rubber punching and grooving process as claimed in claim 1, wherein in step S2, the part blank is a non-quenched material.
6. The sheet metal part rubber punching and grooving process method as claimed in claim 1, wherein in step S2, the part blank is placed in front of the female die, and the part blank is deburred and polished smooth.
7. The sheet metal part rubber punching and grooving process method as claimed in claim 1, wherein in step S3, the pressure applied to the rubber layer is 15-30 MPa.
8. The process of claim 1, wherein in step S3, the device for applying pressure to the rubber layer is a hydraulic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011552144.XA CN112775271B (en) | 2020-12-24 | 2020-12-24 | Technological method for punching and making grooves by using sheet metal part rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011552144.XA CN112775271B (en) | 2020-12-24 | 2020-12-24 | Technological method for punching and making grooves by using sheet metal part rubber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112775271A true CN112775271A (en) | 2021-05-11 |
| CN112775271B CN112775271B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011552144.XA Active CN112775271B (en) | 2020-12-24 | 2020-12-24 | Technological method for punching and making grooves by using sheet metal part rubber |
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| Country | Link |
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| CN112775271B (en) | 2023-05-23 |
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