CN114367578A - Continuous stamping valve plate die technology - Google Patents
Continuous stamping valve plate die technology Download PDFInfo
- Publication number
- CN114367578A CN114367578A CN202111563570.8A CN202111563570A CN114367578A CN 114367578 A CN114367578 A CN 114367578A CN 202111563570 A CN202111563570 A CN 202111563570A CN 114367578 A CN114367578 A CN 114367578A
- Authority
- CN
- China
- Prior art keywords
- die
- thinning
- punch
- die core
- sheet material
- 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
Images
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
-
- 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
- B21D37/10—Die sets; Pillar guides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention discloses a continuous stamping valve plate die process, which comprises the following steps: s1: the method comprises the following steps of selecting a feeding machine, connecting a leveling machine with a punching machine, synchronizing a transmission device on the feeding machine with the punching machine, wherein a die of the punching machine consists of an upper die and a lower die, a first thinning punch and a second thinning punch are arranged on the upper die, an inclined plane thinning punch is arranged on the right side of the first thinning punch, a first die core and a second die core are embedded in the top of the lower die, a third die core is arranged in the second die core, a fourth die core embedded in the lower die is arranged below the second die core, the bottom of the third die core extends into the fourth die core, and a first transmission rod is matched with the bottom of the first die core. The invention can effectively meet the special requirements of product manufacture by matching the burr-free process, the thinning process and the leveling process, does not need to separately use grinding and discharge machining, reduces the manufacturing cost and meets the use requirements.
Description
Technical Field
The invention relates to the technical field of valve plates for refrigerator compressors, in particular to a continuous valve plate stamping die process.
Background
The suction hole and the exhaust hole of a valve plate of a refrigerator compressor control suction and outflow of refrigerants together, the valve plate basically requires good sealing performance, otherwise, when a crank piston moves, the poor sealing of the suction hole and the exhaust hole of the valve plate can directly affect the refrigeration effect, noise is generated, even the valve plate can not work normally, the valve plate used by the traditional domestic refrigerator compressor generally adopts three procedures of stamping and double-sided grinding and a discharge process, the three procedures are high in manufacturing cost, because the air tightness requirement of a product is high, a conventional stamping die can not meet the use requirement, only the post-process grinding and the discharge processing can be increased, the procedure adopting the discharge processing is high in manufacturing cost, and in order to solve the problem, a continuous stamping valve plate die process is provided.
Disclosure of Invention
Based on the technical problems in the prior art, the invention provides a continuous stamping valve plate die process.
The invention provides a continuous stamping valve plate die process, which comprises the following steps:
s1: selecting a feeding machine and a leveling machine to be connected with a punching machine, wherein a transmission device on the feeding machine is synchronous with the speed of the punching machine, a die of the punching machine consists of an upper die and a lower die, a first thinning punch and a second thinning punch are arranged on the upper die, an inclined plane thinning punch is arranged on the right side of the first thinning punch, a first die core and a second die core are embedded in the top of the lower die, a third die core is arranged in the second die core, a fourth die core embedded on the lower die is arranged below the second die core, the bottom of the third die core extends into the fourth die core, a first transmission rod is matched with the bottom of the first die core, a first spring embedded on the lower die is fixedly connected with the bottom of the first transmission rod, a second transmission rod is matched with the bottom of the second die core, and a second spring embedded on the lower die is fixedly connected with the bottom of the second transmission rod;
s2: feeding the plate material between the upper and lower rollers of the leveler in S1, bending the plate material upwards and downwards, and stretching and bending the steel plate for multiple times beyond the yield limit to generate plastic deformation, thereby achieving the purpose of correcting and removing stress and realizing preliminary leveling of the material;
s3: a deburring work station is used for carrying out deburring operation on the edge of the punched product, and the edge of the product is chamfered into a V shape to hide burrs so as to prevent the burrs from rising out of a plane to influence the flatness;
s4: carrying out primary rough cutting on the thinned area of the product by using a rough cutting process so as to eliminate thinning stress;
s5: the outer ring is thinned and the inner side chamfer is synchronously subjected to primary punching, when in primary punching, when the sheet material in S4 moves between an upper die and a lower die on a punch press, the sheet material moves below a first thinning punch 1, the upper die moves downwards, the upper die drives the first thinning punch and an inclined plane thinning punch to press the sheet material downwards, a first die core is driven to move downwards under the extrusion force of the sheet material, the first die core moves downwards and drives a first transmission rod to move downwards, the first transmission rod compresses a first spring downwards, the inclined plane thinning punch extrudes the sheet material outwards to enable the sheet material to flow outwards, the inclined plane thinning punch continues to move downwards, when the sheet material is thinned to a required shape, the upper die moves upwards, the extrusion force of the sheet material disappears, the extrusion force of the first die core disappears, and at the moment, the elasticity of the first spring drives the first die core to move upwards through the first transmission rod, obtaining small exhaust holes, continuously transmitting the plate by the feeder, and performing the next station;
s6: when the sheet material in the S5 moves below the second thinning punch, the upper die moves downwards, the upper die drives the second thinning punch to move downwards to be in contact with the sheet material, the sheet material extrudes the second die core to move downwards, the head of the second thinning punch guides the sheet material to be positioned and extrudes the sheet material outwards while moving downwards, the third die core extrudes the sheet material upwards, the second thinning punch continues to move downwards to apply pressure to the sheet material to obtain a required shape, the second die core compresses the second spring through the second force transmission rod while moving downwards, the upper die moves upwards at the moment, the elasticity of the second spring drives the second die core to move upwards through the second force transmission rod, the second die core upwards pushes the sheet material to float upwards, the extrusion thinning is completed, and an air suction hole is obtained;
s7: and (3) carrying out fine punching on the inner hole and profile trimming on the plate punched in the S6 by using a fine punching tool, trimming off the material extruded and flowing by the profile and the inner hole when thinning, carrying out hole beating burr and flatness shaping after fine punching, and shaping the flatness by adopting socket shape reverse compensation to obtain the valve plate.
Preferably, in S1, the straightening speed of the transmission device on the feeding machine is 15m/min, and the diameter of the straightening rollers is 30 × 7/8 of the rollers.
Preferably, in the step S7, the thickness of the valve plate is 2.0mm, the national standard of the thickness of the plate is +/-0.10mm, and two times of precision rolling are adopted to ensure that the thickness tolerance is within +/-0.02 mm.
Preferably, in S7, the planar shaping is mainly an inverse compensation process to correct slight deformation and warpage of the product after the stress is released.
Preferably, in S5, the chamfering punch used for the inner chamfer is made of tungsten steel by grinding.
Preferably, in S1, the bottom portions of the first thinning punch, the bevel thinning punch and the second thinning punch are enlarged by more than 2 times of the thinning area, so as to ensure sufficient strength of the part.
Preferably, in S1, the material belt on the feeding machine is designed to be a rectangular process notch, so that the flow of the sheet material during thinning can be absorbed, and the influence of material belt positioning due to material extrusion is avoided.
Preferably, the thinning in S5 and S6 adopts vertical synchronous thinning, so that the groove depth before thinning is avoided being influenced by step-by-step thinning, and the thinning adopts an independent template and nitrogen springs for pressing, so that the influence of large stress on other process stability is avoided.
Compared with the prior art, the invention has the beneficial effects that:
the invention can effectively meet the special requirements of product manufacture by matching the burr-free process, the thinning process and the leveling process, does not need to separately use grinding and discharge machining, reduces the manufacturing cost and meets the use requirements.
Drawings
Fig. 1 is a schematic cross-sectional structural diagram of a die for a continuous stamping valve plate die process according to the present invention.
In the figure: 1. a first thinning punch; 2. thinning a punch on the inclined plane; 3. a second dowel bar; 4. a first mold core; 5. a first transfer lever; 6. a first spring; 7. a second spring; 8. a second thinning punch; 9. a second mold core; 10. a fourth mold core; 11. a third mold core.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Examples
Referring to fig. 1, the present embodiment proposes a continuous stamping valve plate die process, including the following steps:
s1: selecting a feeding machine, connecting a leveling machine with a punching machine, wherein the speed of a transmission device on the feeding machine is synchronous with that of the punching machine, the die of the punching machine consists of an upper die and a lower die, the upper die is provided with a first thinning punch 1 and a second thinning punch 8, the right side of the first thinning punch 1 is provided with an inclined plane thinning punch 2, the top of the lower die is embedded with a first die core 4 and a second die core 9, the second die core 9 is internally provided with a third die core 11, the lower part of the second die core 9 is provided with a fourth die core 10 embedded on the lower die, the bottom of the third die core 11 extends into the fourth die core 10, the bottom of the first die core 4 is matched with a first transmission rod 5, the bottom of the first transmission rod 5 is fixedly connected with a first spring 6 embedded on the lower die, the bottom of the second die core 9 is matched with a second transmission rod 3, the bottom of the second transmission rod 3 is fixedly connected with a second spring 13 embedded on the lower die, and the transmission device on the feeding machine, the correcting speed is 15m/min, the diameter of the correcting rollers is phi 30 multiplied by the number of the rollers is 7/lower 8, a material belt on a feeding machine is designed to be a rectangular process notch, the flowing of a plate material during thinning can be absorbed, the influence of material extrusion on the positioning of the material belt is avoided, wherein the bottoms of a first thinning punch 1, an inclined plane thinning punch 2 and a second thinning punch 8 are increased to be more than 2 times of thinning area, and the sufficient strength of a part is ensured;
s2: feeding the plate material between an upper roller and a lower roller on a leveling machine in S1, bending the plate material upwards and downwards, and stretching and bending the steel plate for multiple times to exceed the yield limit to generate plastic deformation, thereby achieving the purposes of correcting and removing stress and realizing the primary leveling of the material;
s3: a deburring work station is used for carrying out deburring operation on the edge of the punched product, and the edge of the product is chamfered into a V shape to hide burrs so as to prevent the burrs from rising out of a plane to influence the flatness;
s4: carrying out primary rough cutting on the thinned area of the product by using a rough cutting process so as to eliminate thinning stress;
s5: the outer ring is thinned and the inner side chamfer is synchronously subjected to primary punching, when in primary punching, when a sheet material in S4 moves between an upper die and a lower die on a punch press, the sheet material moves below a first thinning punch 1, the upper die moves downwards, the upper die drives the first thinning punch 1 and an inclined plane thinning punch 2 to press the sheet material downwards, under the extrusion force of the sheet material, a first die core 4 is driven to move downwards, the first die core 4 moves downwards and simultaneously drives a first transmission rod 5 to move downwards, the first transmission rod 5 compresses a first spring 6 downwards, the inclined plane thinning punch 2 extrudes the sheet material outwards, the sheet material flows outwards, the inclined plane thinning punch 2 continues to move downwards, when the sheet material is thinned to a required shape, the upper die moves upwards to eliminate the extrusion force of the sheet material, the extrusion force of the first die core 4 disappears, at the moment, the elasticity of the first spring 6 drives the first die core 4 to move upwards through the first transmission rod 5, obtaining small exhaust holes, continuously transmitting the plate by the feeder, and performing the next station, wherein the inner side chamfer is formed by grinding tungsten steel by using a chamfer punch;
s6: when the sheet material in the S5 moves below the second thinning punch 8, the upper die moves downwards, the upper die drives the second thinning punch 8 to move downwards to contact the sheet material, the sheet material extrudes the second die core 9 to move downwards, the head of the second thinning punch 8 moves downwards while guiding the sheet material to be positioned and extrudes the sheet material outwards, the third die core 11 extrudes the sheet material upwards, the second thinning punch 8 moves downwards continuously to apply pressure to the sheet material to obtain a required shape, the second die core 9 moves downwards while compressing the second spring 13 through the second force transmission rod 3, the upper die moves upwards at the moment, the elasticity of the second spring 13 drives the second die core 9 to move upwards through the second force transmission rod 3, the second die core 9 upwards pushes the sheet material to float upwards, the sheet material is extruded and thinned, and an air suction hole is obtained, wherein the thinning in the S5 and the S6 adopts the up-down synchronous thinning to avoid the depth before the influence of the step-by step thinning, an independent template is adopted for thinning, and nitrogen springs are used for pressing materials, so that the influence of large stress on other process stability is prevented;
s7: and (3) carrying out fine punching on the inner hole and trimming the shape of the punched plate material in the S6 by using a fine punching tool, trimming off the material extruded and flowing in the shape and the inner hole when thinning, carrying out hole beating burr and flatness shaping after fine punching, and carrying out socket shape reverse compensation shaping on the flatness, wherein the plane shaping is mainly a reverse compensation process, and slight deformation and warpage of the product after stress release are corrected to prepare the valve plate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A continuous stamping valve plate die process is characterized by comprising the following steps:
s1: selecting a feeding machine and a leveling machine to be connected with a punching machine, wherein a transmission device on the feeding machine is synchronous with the speed of the punching machine, a die of the punching machine consists of an upper die and a lower die, a first thinning punch (1) and a second thinning punch (8) are arranged on the upper die, an inclined surface thinning punch (2) is arranged on the right side of the first thinning punch (1), a first die core (4) and a second die core (9) are embedded in the top of the lower die, a third die core (11) is arranged in the second die core (9), a fourth die core (10) embedded in the lower die is arranged below the second die core (9), the bottom of the third die core (11) extends into the fourth die core (10), a first transmission rod (5) is matched with the bottom of the first die core (4), a first spring (6) embedded in the lower die is fixedly connected with the bottom of the first transmission rod (5), and a second transmission rod (3) is matched with the bottom of the second die core (9), the bottom of the second dowel bar (3) is fixedly connected with a second spring (7) embedded on the lower die;
s2: feeding the plate material between the upper and lower rollers of the leveler in S1, bending the plate material upwards and downwards, and stretching and bending the steel plate for multiple times beyond the yield limit to generate plastic deformation, thereby achieving the purpose of correcting and removing stress and realizing preliminary leveling of the material;
s3: a deburring work station is used for carrying out deburring operation on the edge of the punched product, and the edge of the product is chamfered into a V shape to hide burrs so as to prevent the burrs from rising out of a plane to influence the flatness;
s4: carrying out primary rough cutting on the thinned area of the product by using a rough cutting process so as to eliminate thinning stress;
s5: the outer ring thinning and the inner side chamfering are synchronously performed with primary punching, when in primary punching, when the sheet material in S4 moves between an upper die and a lower die on a punch press, the sheet material moves to the position below a first thinning punch (1), the upper die moves downwards, the upper die drives the first thinning punch (1) and a bevel thinning punch (2) to press the sheet material downwards, under the extrusion force of the sheet material, a first die core (4) is driven to move downwards, the first die core (4) moves downwards and simultaneously drives a first transmission rod (5) to move downwards, the first transmission rod (5) compresses a first spring (6) downwards, the bevel thinning punch (2) extrudes the sheet material outwards, the sheet material flows outwards, the bevel thinning punch (2) continues to move downwards, when the sheet material is thinned to a required shape, the upper die moves upwards, the extrusion force of the sheet material disappears, and then the extrusion force of the first die core (4) disappears, at the moment, the elastic force of the first spring (6) drives the first die core (4) to move upwards through the first dowel bar (5) to obtain small exhaust holes, and the feeding machine continues to transmit the plate to perform the next station;
s6: when the sheet material in the S5 moves to the position below the second thinning punch (8), the upper die moves downwards, the upper die drives the second thinning punch (8) to move downwards to contact the sheet material, the sheet material extrudes the second die core (9) to move downwards, the head of the second thinning punch (8) is guided into the sheet material to be positioned and the sheet material is extruded outwards while moving downwards, meanwhile, the third die core (11) extrudes the plate upwards, the second thinning punch (8) continues to move downwards, applying pressure to the plate to obtain a required shape, compressing a second spring (7) through a second dowel bar (3) while a second mold core (9) moves downwards, at the moment, moving the upper mold upwards, driving the second mold core (9) to move upwards through the elasticity of the second spring (7) through the second dowel bar (3), upwards jacking the plate to float, and completing extrusion and thinning to obtain an air suction hole;
s7: and (3) carrying out fine punching on the inner hole and profile trimming on the plate punched in the S6 by using a fine punching tool, trimming off the material extruded and flowing by the profile and the inner hole when thinning, carrying out hole beating burr and flatness shaping after fine punching, and shaping the flatness by adopting socket shape reverse compensation to obtain the valve plate.
2. The continuous stamping valve plate die process of claim 1, wherein in S1, the straightening speed of the transmission device on the feeding machine is 15m/min, and the diameter of the straightening rollers is 30 x the number of rollers is 7/8.
3. The continuous stamping valve plate die process according to claim 1, wherein in the step S7, the valve plate has a thickness of 2.0mm, the plate has a thickness within +/-0.10mm according to the national standard, and two times of precision rolling are adopted to ensure the thickness tolerance within +/-0.02 mm.
4. The continuous stamping valve plate die process as claimed in claim 1, wherein in S7, the planar shaping is mainly an inverse compensation process to correct slight deformation and warpage after stress release of the product.
5. The continuous stamping valve plate die process of claim 1, wherein in the step S5, the inner chamfer is formed by grinding tungsten steel as a chamfer punch.
6. The continuous punching valve plate die process according to claim 1, wherein in S1, the bottoms of the first thinning punch (1), the inclined surface thinning punch (2) and the second thinning punch (8) are enlarged to more than 2 times of thinning area, ensuring sufficient strength of the part.
7. The continuous stamping valve plate die process of claim 1, wherein in the step S1, the strip on the feeding machine is designed to be a rectangular process gap, so as to absorb the flow of the plate material during thinning, and avoid the influence of material extrusion on the strip positioning.
8. The continuous stamping valve plate die process of claim 1, wherein the thinning in S5 and S6 is performed synchronously up and down, avoiding the groove depth before the influence of step thinning, and the thinning is performed by using an independent template and a nitrogen spring to prevent the influence of large stress on other process stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111563570.8A CN114367578B (en) | 2021-12-20 | 2021-12-20 | Continuous stamping valve plate mold process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111563570.8A CN114367578B (en) | 2021-12-20 | 2021-12-20 | Continuous stamping valve plate mold process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114367578A true CN114367578A (en) | 2022-04-19 |
| CN114367578B CN114367578B (en) | 2023-07-14 |
Family
ID=81140387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111563570.8A Active CN114367578B (en) | 2021-12-20 | 2021-12-20 | Continuous stamping valve plate mold process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114367578B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117505683A (en) * | 2024-01-08 | 2024-02-06 | 江苏郎克斯智能工业科技有限公司 | Integrative processingequipment of cell-phone bottom center forging and pressing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0060355A1 (en) * | 1981-03-17 | 1982-09-22 | Edward Donald Bennett | Apparatus for producing a blank from stock material |
| JPH11114639A (en) * | 1997-10-09 | 1999-04-27 | Toyota Auto Body Co Ltd | Composite press die |
| JP2007000901A (en) * | 2005-06-24 | 2007-01-11 | Murata Mach Ltd | Deburring tool for punch press |
| CN205551226U (en) * | 2016-04-30 | 2016-09-07 | 武汉华夏精冲技术有限公司 | A continuous fine blanking mould that is used for processing single face valve line valve plate |
| CN112475031A (en) * | 2020-12-08 | 2021-03-12 | 苏州裕坤科技有限公司 | Progressive die for scraping thin processing in electronic medium plate product |
-
2021
- 2021-12-20 CN CN202111563570.8A patent/CN114367578B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0060355A1 (en) * | 1981-03-17 | 1982-09-22 | Edward Donald Bennett | Apparatus for producing a blank from stock material |
| JPH11114639A (en) * | 1997-10-09 | 1999-04-27 | Toyota Auto Body Co Ltd | Composite press die |
| JP2007000901A (en) * | 2005-06-24 | 2007-01-11 | Murata Mach Ltd | Deburring tool for punch press |
| CN205551226U (en) * | 2016-04-30 | 2016-09-07 | 武汉华夏精冲技术有限公司 | A continuous fine blanking mould that is used for processing single face valve line valve plate |
| CN112475031A (en) * | 2020-12-08 | 2021-03-12 | 苏州裕坤科技有限公司 | Progressive die for scraping thin processing in electronic medium plate product |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117505683A (en) * | 2024-01-08 | 2024-02-06 | 江苏郎克斯智能工业科技有限公司 | Integrative processingequipment of cell-phone bottom center forging and pressing |
| CN117505683B (en) * | 2024-01-08 | 2024-04-05 | 江苏郎克斯智能工业科技有限公司 | Integrative processingequipment of cell-phone bottom center forging and pressing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114367578B (en) | 2023-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2003117619A (en) | Press forming method and device used therefor | |
| CN103212620B (en) | Impulse-free robustness blanking method and stamping-out system | |
| CN110695205A (en) | Blanking-punching-flanging-deep drawing composite die and composite process for automobile rear axle flange dust cover | |
| CN114367578A (en) | Continuous stamping valve plate die technology | |
| CN107234174A (en) | The forming process of automobile longitudinal girder | |
| CN202291028U (en) | Continuous punching die for silencer of air conditioning compressor | |
| CN105251867A (en) | Rear axle locking gasket die capable of punching 24 holes in two steps and machining process of die | |
| CN207057408U (en) | A kind of automobile handware chamfer progressive die tool | |
| WO2015051584A1 (en) | Method for machining and shaping rocker arm frame | |
| CN110814179A (en) | Preparation method of inner annular zero-fillet convex blank | |
| CN208743541U (en) | It is a kind of can automatic material returning stamping die | |
| CN116511332A (en) | Double-fillet burr-free blanking device for section of chain sheet | |
| CN111097837A (en) | Reverse punching die for circular tube part | |
| CN213436624U (en) | Bidirectional female die stamping die | |
| CN204584058U (en) | A kind of automobile support stiffener mould | |
| CN213968590U (en) | Support bending device | |
| CN109351863B (en) | Automobile driving rear axle brake dust cover composite die and composite process | |
| EP3056295A1 (en) | Method for machining and shaping rocker arm frame | |
| CN208083182U (en) | A kind of progressive die | |
| CN218425128U (en) | Continuous stamping die of power shell hardware fitting | |
| CN220196076U (en) | Stamping die and stamping equipment | |
| CN215315147U (en) | Combined type drawing die/drawing stamping die structure | |
| CN116475307B (en) | Online hole flanging die for rolling part and application method of online hole flanging die | |
| CN213223976U (en) | Oil cooler chip blanking stretching and transferring die | |
| CN116393584B (en) | Method for forming large chamfer angle based on die stamping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |