CN112475050A - Bearing retainer ring forming-punching composite die and machining process thereof - Google Patents
Bearing retainer ring forming-punching composite die and machining process thereof Download PDFInfo
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- CN112475050A CN112475050A CN202011469012.0A CN202011469012A CN112475050A CN 112475050 A CN112475050 A CN 112475050A CN 202011469012 A CN202011469012 A CN 202011469012A CN 112475050 A CN112475050 A CN 112475050A
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- 238000004080 punching Methods 0.000 title claims abstract description 81
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000003754 machining Methods 0.000 title claims description 5
- 238000007599 discharging Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 18
- 229920002635 polyurethane Polymers 0.000 claims abstract description 14
- 239000004814 polyurethane Substances 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims description 20
- 230000009471 action Effects 0.000 claims description 9
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 238000010009 beating Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention relates to a bearing retainer ring molding-punching composite die and a processing technology thereof, wherein the die comprises an upper half part and a lower half part, and the upper half part comprises a guide sleeve, an upper template, an upper padding plate, a die shank, an upper discharging rod, a composite die, an upper fixing plate, polyurethane and an upper discharging ring; the lower half part of the die comprises a guide pillar, a lower material pushing ring, a punching male die, a push rod, a lower die plate, a forming female die and a positioning ring; the inner ring and the outer ring of the lower material ejecting ring are in clearance fit with the punching male die and the forming female die respectively, so that the precision of the formed boss surface of the workpiece is fully ensured; the upper surfaces of the punching male die and the forming female die are in a stepped structure, so that the upper surface of the forming female die is higher than that of the punching male die, a workpiece is firstly subjected to a forming process, and then punching of a middle hole is performed, so that the precision of a product hole is improved, the forming and punching processes are combined, the forming and punching processing can be completed in a single step, the precision of each size of the formed workpiece and the punched hole is ensured, the product quality is stable, and the production efficiency is effectively improved.
Description
Technical Field
The invention relates to the field of mechanical equipment, in particular to a bearing retainer ring forming-punching composite die and a machining process thereof.
Background
The bearing transmission of parts such as the front axle of the automobile and the like can not be fixed in the middle of the retainer ring, although the bearing retainer ring part is small, the bearing retainer ring part can play a key role, the bearing retainer ring mainly fixes the parts and prevents other parts on a shaft from moving, and the retainer ring is one of necessary accessories in the bearing transmission. The traditional manufacturing process flow at present is as follows: blanking → blanking-shaping → punching to meet the design requirement of the product. The production process is low in production efficiency, and the punching positioning of the molded part needs to adopt appearance positioning and is not accurate enough, so that the punching is easy to be unilateral, and the installation quality of the check ring is finally influenced.
For example, application number is 201921370941.9, and the patent name is a stamping forming die's of retaining ring utility model patent, and it includes upper die base, die holder, punching press head, goes up mould, lower mould, die cavity, connecting rod, ejection mechanism and piece collection device, the outer end of upper die base all is equipped with the connecting rod, the bottom of connecting rod is equipped with the die holder, be equipped with the punching press head in the middle of the bottom of upper die base, the both sides of punching press head are equipped with damping device, damping device's outer end is equipped with the reference column, the top of die holder is equipped with the lower mould, be equipped with the die cavity in the middle of the top of lower mould, the both sides of die cavity are equipped with the locating hole, the. The die has the problem that the workpiece appearance positioning is not accurate enough, and the forming and punching processes of the workpiece cannot be considered.
Therefore, it is important to design and manufacture a new bearing retainer ring molding-punching composite die and a new composite process, to improve the processing precision of the product, ensure the product installation quality and improve the production efficiency.
Disclosure of Invention
The invention aims to provide a composite die for completing the molding-punching process of a bearing retainer ring at one time. The forming-punching composite die is arranged on a press machine to carry out composite processing of forming and punching procedures on the bearing retainer ring.
The invention also aims to provide a processing technology of the bearing retainer ring molding-punching composite die, so as to replace the traditional composite technology processed by two working procedures.
The invention realizes one of the purposes, and adopts the following technical scheme:
a bearing retainer ring molding-punching composite die comprises an upper half part and a lower half part, wherein the upper half part comprises a guide sleeve, an upper template, an upper backing plate, a die shank, an upper discharging rod, a composite die, an upper fixing plate, polyurethane and an upper discharging ring;
the lower half part of the die comprises a guide pillar, a lower material pushing ring, a punching male die, a push rod, a lower die plate, a forming female die and a positioning ring;
the guide sleeve and the die handle are arranged in the corresponding fixing holes of the upper die plate in an interference fit manner, the compound die is arranged in the corresponding fixing holes of the upper fixing plate in an interference fit manner, the upper fixing plate and the upper backing plate are correspondingly connected with the upper die plate, the upper discharging ring and polyurethane are sleeved on the outer side of the compound die in a clearance fit manner and are fixedly connected with the upper die plate through bolts, and the end part of the upper discharging rod sequentially penetrates through the central holes of the compound die, the upper backing plate and the die handle;
the guide post is fixed in a guide post hole corresponding to the lower template in an interference fit manner, the punching male die is fixed in a fixing hole corresponding to the forming female die in an interference fit manner, the forming female die is fixed at the top of the lower template, the ejector rod is placed in an ejector rod hole corresponding to the forming female die according to a corresponding position, the lower ejector ring is arranged in a cavity formed by an outer ring of the punching male die and an inner ring of the forming female die in a clearance fit manner, the positioning ring is fixed on the upper surface of the forming female die, and the upper discharging ring is provided with a lubricating oil injection channel.
Furthermore, the upper discharging rod is of a movable structure, and the bottom outer circle of the upper discharging rod is in clearance fit with the inner circle of the compound die.
Furthermore, the bottom and the outer ring of the compound die are in a smooth fillet shape and play a role of a forming male die, and the inner ring of the compound die is in a cutting edge shape and plays a role of a punching female die.
Furthermore, the upper surface of the lower material ejection ring is a step profile, when the upper surface is pressed in place, the forming processing of the bottom of a workpiece is completed, and material ejection is realized after pressing is completed.
Furthermore, the inner ring and the outer ring of the lower ejection ring are in clearance fit with the punching male die and the forming female die respectively, so that the precision of the forming male die surface of the workpiece is ensured.
Furthermore, the upper surfaces of the punching male die and the forming female die are of a stepped structure, and the upper surface of the forming female die is higher than that of the punching male die.
Further, before the composite die works, when the lower material ejection ring is ejected under the action of the ejector rod, the upper surface of the lower material ejection ring is flush with the upper surface of the forming female die.
The second purpose of the invention is realized by adopting the following technical scheme:
the machining process of the bearing retainer ring molding-punching composite die is characterized by comprising the following steps of:
step 1: mounting a bearing retainer ring forming-punching composite die on a 63T pneumatic press;
step 2: placing the bearing retainer ring after the blanking process into a positioning ring, and positioning the bearing retainer ring through an inner ring of the positioning ring;
and 3, step 3: starting a press, enabling an upper die plate to move downwards along with an upper workbench of a machine tool, enabling an upper discharging ring to compress a blank under the pressure action of polyurethane, enabling a compound die to move downwards, enabling a lower material pushing ring and a forming female die to complete a workpiece forming process, and then continuing to move downwards, and completing a workpiece punching process through the compound die and a punching male die;
and 4, step 4: after the workpiece is formed and punched, an upper sliding block of a press machine drives the upper half part of a die to return, at the moment, a cylinder of the press machine transfers force, a lower material pushing ring is driven by a mandril to move upwards to push the workpiece upwards, the workpiece is detached from a lower die cavity and then is detached by an upper material discharging ring under the pressure action of polyurethane, and then the workpiece continues to move upwards until a material beating mechanism of a working table on the press machine transfers force to an upper material discharging rod to slide downwards, and finally punching waste materials are beaten out from an upper die cavity;
and 5, step 5: and (5) repeating the operations from the step (2) to the step (4) to manufacture the lower workpiece.
The invention has the beneficial effects that: the inner ring and the outer ring of the lower material ejecting ring are in clearance fit with the punching male die and the forming female die respectively, so that the precision of the forming male die surface of a workpiece is fully ensured; the upper surfaces of the punching male die and the forming female die are in a stepped structure, so that the upper surface of the forming female die is higher than that of the punching male die, a workpiece is firstly subjected to a forming process, and then punching of a middle hole is performed, so that the precision of a product hole is improved, the forming and punching processes are combined, the forming and punching processing can be completed in a single step, the precision of each size of the formed workpiece and the punched hole is ensured, the product quality is stable, and the production efficiency is effectively improved.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the lower half of the mold of the present invention;
fig. 3 is a schematic structural view of a retainer ring (workpiece) machined by the present invention.
In the figure: the device comprises a guide sleeve 1, an upper template 2, an upper padding plate 3, a die shank 4, an upper discharging rod 5, a compound die 6, an upper fixing plate 7, polyurethane 8, an upper discharging ring 9, a guide pillar 10, a lower ejecting ring 11, a punching male die 12, a top rod 13, a lower template 14, a forming female die 15, a positioning ring 16, a bearing retainer ring 17 and a lubricating oil injection channel 18.
Detailed Description
As shown in fig. 1 to 3, a bearing retainer ring molding-punching composite die comprises an upper half part and a lower half part, wherein the upper half part comprises a guide sleeve 1, an upper template 2, an upper backing plate 3, a die shank 4, an upper discharging rod 5, a composite die 6, an upper fixing plate 7, polyurethane 8 and an upper discharging ring 9;
the lower half part of the die comprises a guide pillar 10, a lower ejector ring 11, a punching male die 12, an ejector rod 13, a lower die plate 14, a forming female die 15 and a positioning ring 16;
the guide sleeve 1 and the die shank 4 are assembled in corresponding fixing holes of the upper die plate 2 through interference fit, the compound die 6 is assembled in corresponding fixing holes of the upper fixing plate 7 through interference fit, the upper fixing plate 7 and the upper backing plate 3 are correspondingly connected with the upper die plate 2, the upper discharging ring 9 and the polyurethane 8 are sleeved on the outer side of the compound die 6 through clearance fit and are fixedly connected with the upper die plate 2 through bolts, and the end part of the upper discharging rod 5 sequentially penetrates through central holes of the compound die 6, the upper backing plate 3 and the die shank 4;
the guide post 10 is fixed in a guide post hole corresponding to the lower template 14 through interference fit, the punching male die 12 is fixed in a fixing hole corresponding to the forming female die 15 through interference fit, the forming female die 15 is fixed at the top of the lower template 14, the ejector rod 13 is placed in an ejector rod hole corresponding to the forming female die 15 according to a corresponding position, the lower ejector ring 11 is arranged in a cavity formed by an outer ring of the punching male die 12 and an inner ring of the forming female die 15 through clearance fit, and the positioning ring 16 is fixed on the upper surface of the forming female die 15. And a lubricating oil injection channel 18 is arranged on the upper discharging ring 9, and lubricating oil is injected into the lubricating oil injection channel 18, so that the contact position of the compound die 6 and the bearing retainer ring 17 is conveniently lubricated.
The upper discharging rod 5 is of a movable structure, and the bottom excircle of the upper discharging rod 5 is in clearance fit with the inner ring of the compound die 6;
the bottom and the outer ring of the compound die 6 are in a smooth fillet shape and play a role of a forming male die, and the inner ring of the compound die is in a cutting edge shape and plays a role of a punching female die;
the upper surface of the lower material ejection ring 11 is a step profile, when the upper surface is pressed in place, the forming processing of the bottom of a workpiece is completed, and material ejection is realized after pressing is completed;
the inner ring and the outer ring of the lower material pushing ring 11 are in clearance fit with the punching male die 12 and the forming female die 15 respectively, and the precision of the forming male die surface of the workpiece is guaranteed.
The upper surfaces of the punching male die 12 and the forming female die 15 are in a stepped structure, and the upper surface of the forming female die 15 is higher than the upper surface of the punching male die 12.
Before the composite die works, when the lower ejection ring 11 is ejected under the action of the ejector rod 13, the upper surface of the lower ejection ring 11 is flush with the upper surface of the forming female die 15.
A processing technology of a bearing retainer ring molding-punching composite die comprises the following steps:
step 1: mounting a bearing retainer ring forming-punching composite die on a 63T pneumatic press;
step 2: placing the bearing retainer ring 17 after the blanking process into the positioning ring 16, and positioning the bearing retainer ring through the inner ring of the positioning ring;
and 3, step 3: starting a press machine, enabling an upper template 2 to move downwards along with an upper workbench of a machine tool, enabling an upper discharging ring 9 to firstly compress a blank under the pressure action of polyurethane 8, then enabling a compound die 6 to move downwards, completing a workpiece forming process with a lower ejecting ring 11 and a forming female die 15, then continuing to move downwards, and completing a workpiece punching process with the compound die 6 and a punching male die 12;
and 4, step 4: after the workpiece is formed and punched, an upper sliding block of a press machine drives the upper half part of a die to return, at the moment, a cylinder of the press machine transfers force, a lower material ejecting ring 11 is driven to move upwards through a mandril 13 to eject the workpiece upwards, the workpiece is detached from a lower die cavity and then is detached by an upper material discharging ring 9 under the pressure action of polyurethane 8, and then the workpiece continues to move upwards until a material ejecting mechanism of an upper working table of the press machine transfers force to an upper material discharging rod 5 to slide downwards, and finally punching waste materials are ejected from an upper die cavity;
and 5, step 5: and (5) repeating the operations from the step (2) to the step (4) to manufacture the lower workpiece.
The inner ring and the outer ring of the lower material ejecting ring are in clearance fit with the punching male die and the forming female die respectively, so that the precision of the forming male die surface of a workpiece is fully ensured; the upper surfaces of the punching male die and the forming female die are in a stepped structure, so that the upper surface of the forming female die is higher than that of the punching male die, a workpiece is firstly subjected to a forming process, and then punching of a middle hole is performed, so that the precision of a product hole is improved, the forming and punching processes are combined, the forming and punching processing can be completed in a single step, the precision of each size of the formed workpiece and the punched hole is ensured, the product quality is stable, and the production efficiency is effectively improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A bearing retainer ring forming-punching composite die comprises an upper half part and a lower half part, wherein the upper half part comprises a guide sleeve (1), an upper die plate (2), an upper backing plate (3), a die shank (4), an upper discharging rod (5), a composite die (6), an upper fixing plate (7), polyurethane (8) and an upper discharging ring (9);
the lower half part of the die comprises a guide post (10), a lower material pushing ring (11), a punching male die (12), a push rod (13), a lower die plate (14), a forming female die (15) and a positioning ring (16);
the guide sleeve is characterized in that the guide sleeve (1) and the die shank (4) are assembled in corresponding fixing holes of an upper die plate (2) through interference fit, a composite die (6) is assembled in a corresponding fixing hole of an upper fixing plate (7) through interference fit, the upper fixing plate (7) and an upper backing plate (3) are correspondingly connected with the upper die plate (2), an upper discharging ring (9) and polyurethane (8) are sleeved on the outer side of the composite die (6) through clearance fit and are fixedly connected with the upper die plate (2), and the end part of an upper discharging rod (5) sequentially penetrates through central holes of the composite die (6), the upper backing plate (3) and the die shank (4);
the guide post (10) is fixed in a guide post hole corresponding to the lower template (14) through interference fit, the punching male die (12) is fixed in a fixing hole corresponding to the forming female die (15) through interference fit, the forming female die (15) is fixed at the top of the lower template (14), the ejector rod (13) is placed in an ejector rod hole corresponding to the forming female die (15) according to a corresponding position, the lower ejector ring (11) is arranged in a cavity formed by the outer ring of the punching male die (12) and the inner ring of the forming female die (15) through clearance fit, the positioning ring (16) is fixed on the upper surface of the forming female die (15), and the upper discharging ring (9) is provided with a lubricating oil injection channel (18).
2. The bearing retainer ring forming-punching composite die as claimed in claim 1, wherein the upper discharging rod (5) is of a movable structure, and the bottom outer circle of the upper discharging rod (5) is in clearance fit with the inner circle of the composite die (6).
3. The bearing retainer ring molding-punching composite die as claimed in claim 2, wherein the bottom and the outer ring of the composite die (6) are in a smooth round angle shape and function as a molding male die, and the inner ring thereof is in a cutting edge shape and functions as a punching female die.
4. The bearing retainer ring molding-punching composite die as claimed in claim 2, wherein the upper surface of the lower ejection ring (11) is a step profile, and when the upper surface is pressed in place, the molding processing of the bottom of a workpiece is completed, and ejection is realized after the pressing is completed.
5. The bearing retainer ring forming-punching composite die as claimed in claim 2, wherein the inner ring and the outer ring of the lower ejector ring (11) are in clearance fit with the punching male die (12) and the forming female die (15) respectively, so that the precision of the formed boss surface of a workpiece is ensured.
6. The bearing retainer ring forming-punching composite die as claimed in claim 2, wherein the upper surfaces of the punching male die (12) and the forming female die (15) are in a stepped structure, and the upper surface of the forming female die (15) is higher than the upper surface of the punching male die (12).
7. The bearing retainer ring forming-punching composite die as claimed in claim 2, wherein before the composite die works, when the lower ejection ring (11) is ejected under the action of the ejector rod (13), the upper surface of the lower ejection ring (11) is flush with the upper surface of the forming female die (15).
8. The machining process of the bearing retainer ring molding-punching composite die is characterized by comprising the following steps of:
step 1: mounting a bearing retainer ring forming-punching composite die on a 63T pneumatic press;
step 2: placing the bearing retainer ring (17) after the blanking process into a positioning ring (16), and positioning the bearing retainer ring through an inner ring of the positioning ring;
and 3, step 3: starting a press, enabling an upper template (2) to move downwards along with an upper workbench of a machine tool, firstly compacting a blank by an upper unloading ring (9) under the pressure action of polyurethane (8), then enabling a compound die (6) to move downwards, a lower material ejection ring (11) and a forming female die (15) to complete a workpiece forming process, and then continuing to move downwards, and then enabling the compound die (6) and a punching male die (12) to complete a workpiece punching process;
and 4, step 4: after the workpiece is formed and punched, an upper sliding block of a press machine drives the upper half part of a die to return, at the moment, a cylinder of the press machine transfers force, a lower material ejecting ring (11) is driven to move upwards through a mandril (13), the workpiece is ejected upwards, the workpiece is detached from a lower die cavity, the workpiece is detached under the pressure action of polyurethane (8) through an upper material discharging ring (9), and then the workpiece continues to move upwards until a material beating mechanism of an upper working table of the press machine transfers force to an upper material discharging rod (5) to slide downwards, and finally punching waste materials are beaten out from an upper die cavity;
and 5, step 5: and (5) repeating the operations from the step (2) to the step (4) to manufacture the lower workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011469012.0A CN112475050A (en) | 2020-12-15 | 2020-12-15 | Bearing retainer ring forming-punching composite die and machining process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011469012.0A CN112475050A (en) | 2020-12-15 | 2020-12-15 | Bearing retainer ring forming-punching composite die and machining process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112475050A true CN112475050A (en) | 2021-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011469012.0A Pending CN112475050A (en) | 2020-12-15 | 2020-12-15 | Bearing retainer ring forming-punching composite die and machining process thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN112475050A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592018A (en) * | 2022-10-27 | 2023-01-13 | 贵州红阳机械有限责任公司（Cn） | Metal framework composite punching die forming process and punching die |
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| US4951537A (en) * | 1988-09-29 | 1990-08-28 | Ace Technology Corporation | Apparatus for producing a blank from stock material |
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| CN104353733B (en) * | 2014-10-29 | 2017-02-15 | 无锡市中捷减震器有限公司 | Continuous mold capable of automatically adding oil for lubrication |
| CN107497963A (en) * | 2017-08-22 | 2017-12-22 | 锦州富山密封科技有限公司 | Sealing gasket guard ring composite molding die |
| CN109351864A (en) * | 2018-11-15 | 2019-02-19 | 江西江铃底盘股份有限公司 | A kind of automobile axle oil tube bracket composite die and combination process |
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2020
- 2020-12-15 CN CN202011469012.0A patent/CN112475050A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4951537A (en) * | 1988-09-29 | 1990-08-28 | Ace Technology Corporation | Apparatus for producing a blank from stock material |
| CN202291048U (en) * | 2011-10-26 | 2012-07-04 | 铜陵百瑞豪科技有限公司 | Blanking and drawing convex concave die of blanking and drawing mould |
| CN103372609A (en) * | 2013-07-31 | 2013-10-30 | 南车洛阳机车有限公司 | Composite die for processing spring seat parts |
| CN104353733B (en) * | 2014-10-29 | 2017-02-15 | 无锡市中捷减震器有限公司 | Continuous mold capable of automatically adding oil for lubrication |
| CN104826938A (en) * | 2015-05-11 | 2015-08-12 | 江西江铃底盘股份有限公司 | Automobile tray bearing nut locking gasket blanking-molding-punching composite die and process thereof |
| CN107497963A (en) * | 2017-08-22 | 2017-12-22 | 锦州富山密封科技有限公司 | Sealing gasket guard ring composite molding die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592018A (en) * | 2022-10-27 | 2023-01-13 | 贵州红阳机械有限责任公司（Cn） | Metal framework composite punching die forming process and punching die |
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Application publication date: 20210312 |