CN107008806B - A kind of continuous compound fine-punching formation technique of tooth form metallic gasket walk - Google Patents
A kind of continuous compound fine-punching formation technique of tooth form metallic gasket walk Download PDFInfo
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- CN107008806B CN107008806B CN201710290693.6A CN201710290693A CN107008806B CN 107008806 B CN107008806 B CN 107008806B CN 201710290693 A CN201710290693 A CN 201710290693A CN 107008806 B CN107008806 B CN 107008806B
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- tooth form
- metallic gasket
- punch
- form metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- 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
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- 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
- B21D37/08—Dies with different parts for several steps in a process
-
- 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
- B21D53/00—Making other particular articles
- B21D53/16—Making other particular articles rings, e.g. barrel hoops
- B21D53/20—Making other particular articles rings, e.g. barrel hoops washers, e.g. for sealing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Gasket Seals (AREA)
Abstract
The present invention relates to a kind of continuous compound fine-punching formation techniques of tooth form metallic gasket walk, plate is placed on walk continuously on compound fine-punching formation device, plate is sequentially completed in walk continuously four stations of compound fine-punching formation device rushes endoporus and annular incision forming, pre- crowded teeth shape, smart crowded teeth shape, become tooth form metallic gasket after rushing endoporus and blanking, tooth form metallic gasket is taken out from compound fine-punching formation device and is put on the Extruding die of deburring extrusion die assembly by manipulator, the extruding punch of deburring extrusion die assembly moves down to coordinate with Extruding die and squeezes tooth form metallic gasket, the bottom portion of groove edge of Extruding die is fillet, when tooth form metallic gasket is extruded, the burr of tooth form metallic gasket edge is folded inward by fillet and is extruded embedded tooth form metallic gasket surface.The technique high precision machining, has effectively removed burr, high in machining efficiency.
Description
Technical field
The invention belongs to compound fine-punching formation fields, and in particular to a kind of continuous compound fine of tooth form metallic gasket walk
Forming technology.
Background technology
Fine is good by parts size precision height, the cross section quality that the design of unique mould structure makes, extensive use
In fields such as automobile, mechano-electronic and aerospaces, and compound fine refers on fine machine by continuous compound die or more
Station progressive die is by the profile fine of part and other forming technology (such as bending, flange, flattening, jumping-up, extruding, counterbore bodies
Product forming technology) it is incorporated into a kind of processing method on one or different station, combined forming process general step is to pass through body
Product forming obtains part shape feature, and the part of high dimensional accuracy and excellent surface quality is then obtained by fine blanking.
Compound fine-punching formation part shear surface all contain it is jagged, the presence of burr can seriously affect the assembly of part, and
The peeling of burr can influence the performance of whole part during follow-up use, therefore compound fine blanking part needs will carry out unhairing
Thorn processing could use, and existing deburring treatment process is usually to place part then to pass through high speed rotation on a moving belt
Hairbrush burr is removed.
The thickness of tooth form gasket is generally less than 2mm, and outer diameter is larger (up to 240mm), and in order to ensure sealing performance
The planarity requirements of tooth form metallic gasket are high, thus this outer diameter of tooth form metallic gasket is big and part that thickness is thin is using passing
The deburring operation of system can seriously affect the flatness of part.How to ensure the flatness of tooth form metallic gasket, simplifies tooth form
The production procedure of metallic gasket improves production efficiency, is to still need to solve in the compound fine production of current tooth form metallic gasket
A great problem.
Invention content
The object of the present invention is to provide a kind of tooth form metallic gasket walk, continuously compound fine-punching formation technique, the technique are adopted
Rush with extrusion molding twice and twice endoporus, high precision machining, by squeeze deburring and by fillet unfold burr, effectively
Burr is eliminated, it is high in machining efficiency.
The technical solution adopted in the present invention is：
A kind of continuous compound fine-punching formation technique of tooth form metallic gasket walk, includes the following steps,
1) plate is placed on walk continuously on compound fine-punching formation device, plate is in the continuous compound fine-punching formation dress of walk
Be sequentially completed in four stations set rush endoporus and annular incision forming, pre- crowded teeth shape, smart crowded teeth shape, rush after endoporus and blanking at
For tooth form metallic gasket；
2) tooth form metallic gasket is taken out from compound fine-punching formation device and is put into deburring extrusion die assembly by manipulator
Extruding die on；
3) extruding punch of deburring extrusion die assembly moves down to coordinate with Extruding die and squeezes tooth form metallic gasket, squeezes
The bottom portion of groove edge for pressing mould is fillet, when tooth form metallic gasket is extruded, the burr of tooth form metallic gasket edge
It is folded inward by fillet and is extruded embedded tooth form metallic gasket surface.
Further, when the tooth form of tooth form metallic gasket is equilateral right angled triangle, tooth that pre- crowded teeth shape is extruded
Wedge angle is 55 °, and the tooth angle that smart crowded teeth shape is extruded is 90 °.
Further, continuously compound fine-punching formation device includes the first cope plate, is located at immediately below the first cope plate for walk
The first lower template, be fixed on the first upper die plate of the first cope plate bottom side and rush endoporus along what machine direction was set gradually
With annular incision forming assembly, pre- crowded teeth shape component, smart crowded teeth shape component, rush endoporus and blanking component；
It rushes endoporus and annular incision forming assembly includes being located at the first holding pad below the first upper die plate, passing through first
The first transmission rod that cope plate and the first upper die plate are fixedly connected with the first holding pad, upper end are each attached to the first cope plate bottom
Side and lower end both pass through the lance punch of the first upper die plate and the first holding pad and first and rush endoporus punch-pin, are each attached to
One lower template top side and it is located at lance punch and the first notch cavity plate and first for rushing immediately below endoporus punch-pin rushes endoporus
Cavity plate；
Pre- crowded teeth shape component include be located at the first upper die plate below the second holding pad, pass through the first cope plate and first
The second transmission rod that upper die plate is fixedly connected with the second holding pad, upper end is fixed on the first cope plate bottom side and lower end passes through
The pre- crowded teeth punch-pin of first upper die plate and the second holding pad is fixed on the first lower template top side and is located at pre- crowded teeth punch-pin just
The pre- crowded teeth cavity plate of lower section；
Smart crowded teeth shape component include be located at the first upper die plate below third holding pad, pass through the first cope plate and first
Third transmission rod that upper die plate is fixedly connected with third holding pad, upper end is fixed on the first cope plate bottom side and lower end passes through
The smart crowded teeth punch-pin of first upper die plate and third holding pad is fixed on the first lower template top side and is located at smart crowded teeth punch-pin just
The smart crowded teeth cavity plate of lower section；
It rushes endoporus and blanking component is located at the 4th holding pad below the first upper die plate, passes through the first cope plate and first
The 4th transmission rod that upper die plate is fixedly connected with the 4th holding pad, upper end is each attached to the first cope plate bottom side and lower end is equal
Endoporus punch-pin is rushed across the blanking punch of the first upper die plate and the 4th holding pad and second, is each attached to the first lower template top side
And it is located at blanking punch and the second blanking die and second for rushing immediately below endoporus punch-pin rushes endoporus cavity plate.
Further, deburring extrusion die assembly includes under the second cope plate, second immediately below the second cope plate
Template, the second upper die plate for being fixed on the second cope plate bottom side, upper end is fixed on the second cope plate bottom side and lower end passes through
The extruding punch of second upper die plate is fixed on the second lower template top side and the Extruding die immediately below extruding punch.
The beneficial effects of the invention are as follows：
The tooth form of tooth form metallic gasket squeezes extrusion molding twice using pre- squeeze with essence, and it is smaller that tooth angle is formed when pre- crowded
Tooth angle expansion is forced down when essence is squeezed, relative to an extrusion molding, reduces stress concentration, avoid flow of metal by tooth form
It measures excessive, improves machining accuracy, tooth form metallic gasket rushes endoporus and be located at extruding tooth form twice using endoporus is rushed twice
Front and back station, rush endoporus for the second time and be carried out at the same time with blanking, for remove squeeze tooth form after endoporus be pressurized the part that narrows, protect
Machining accuracy is demonstrate,proved, tooth form metallic gasket makes tooth form metal by extrusion fit deburring, the fillet design of Extruding die
Burr at subgasket edges, which is directed to, to be folded inward up to embedded tooth form metallic gasket surface, relative to setting for no fillet
Meter, burr open and flat can not converge into one, and the technique is high in machining efficiency, has effectively removed burr, ensure that tooth form metal is close
The flatness of packing.
Description of the drawings
Fig. 1 is the structural schematic diagram of the continuous compound fine-punching formation device of walk in the embodiment of the present invention.
Fig. 2 is the tooth form schematic diagram after pre- crowded teeth shape in the embodiment of the present invention.
Fig. 3 is the tooth form schematic diagram after smart crowded teeth shape in the embodiment of the present invention.
Fig. 4 is signal when tooth form metallic gasket is located at undressed in deburring extrusion die assembly in the embodiment of the present invention
Figure.
Fig. 5 is that tooth form metallic gasket is located at signal when being processed in deburring extrusion die assembly in the embodiment of the present invention
Figure.
Fig. 6 is the process flow chart of the embodiment of the present invention.
Fig. 7 is the schematic diagram of tooth form metallic gasket in the embodiment of the present invention.
In figure：1- plates；The first transmission rods of 2-；3- lance punch；4- first rushes endoporus punch-pin；The first holding pads of 5-；6-
Second transmission rod；The pre- crowded teeth punch-pin of 7-；The second holding pads of 8-；9- third transmission rods；10- essence crowded teeth punch-pin；11- third binders
Plate；The 4th transmission rods of 12-；13- blanking punches；14- second rushes endoporus punch-pin；The first cope plates of 15-；The first upper die plates of 16-；
The 4th holding pads of 17-；18- blanking dies；The first lower templates of 19-；20- second rushes endoporus cavity plate；21- essence crowded teeth cavity plates；22- is pre-
Crowded teeth cavity plate；23- notch cavity plates；24- first rushes endoporus cavity plate；The second cope plates of 25-；26- extruding punch；The second upper molds of 27-
Backing plate；28- Extruding dies；The second lower templates of 29-；30- tooth form metallic gaskets；31- burrs；32- manipulators.
Specific implementation mode
The present invention is further illustrated with reference to the accompanying drawings and examples.
The continuous compound fine-punching formation technique of a kind of tooth form metallic gasket walk, as shown in fig. 6, including the following steps：1)
Plate 1 is placed on walk continuously on compound fine-punching formation device, four in the continuous compound fine-punching formation device of walk of plate 1
It is sequentially completed in station and rushes endoporus and annular incision forming, pre- crowded teeth shape, smart crowded teeth shape, rushes after endoporus and blanking as tooth form gold
Belong to gasket 30；2) tooth form metallic gasket 30 is taken out from compound fine-punching formation device and is put into deburring extruding by manipulator 32
On the Extruding die 28 of mold device；3) extruding punch 26 of deburring extrusion die assembly, which is moved down, coordinates with Extruding die 28 by tooth
Shape metallic gasket 30 squeezes, and the bottom portion of groove edge of Extruding die 28 is fillet (as shown in Figure 4 and Figure 5), and tooth form metal is close
When packing 30 is extruded, (burr 31 concentrates on 30 side of tooth form metallic gasket to the burr 31 of 30 edge of tooth form metallic gasket
At edge) it is folded inward by fillet and is extruded embedded 30 surface of tooth form metallic gasket (as shown in Figure 5).
The tooth form of tooth form metallic gasket 30 squeezes extrusion molding twice using pre- squeeze with essence, and it is smaller that tooth angle is formed when pre- crowded
Tooth form, essence squeeze when by tooth angle expansion force down, relative to an extrusion molding, reduce stress concentration, avoid metal change
Shape amount is excessive, improves machining accuracy, and tooth form metallic gasket 30 rushes endoporus and be located at extruding twice using endoporus is rushed twice
The front and back station of tooth form rushes endoporus and is carried out at the same time with blanking for the second time, for remove squeeze tooth form after endoporus be pressurized the portion that narrows
Point, it ensure that machining accuracy, tooth form metallic gasket 30 are made by extrusion fit deburring 31, the fillet design of Extruding die
The burr 31 of 30 edge of tooth form metallic gasket, which is directed to, to be folded inward until embedded 30 surface of tooth form metallic gasket, phase
Design for no fillet, burr 31 open and flat can not converge into one, and the technique is high in machining efficiency, has effectively removed burr
31, it ensure that the flatness of tooth form metallic gasket 30.
As shown in Fig. 2, Fig. 3 and Fig. 7, in the present embodiment, the tooth form of tooth form metallic gasket 30 is equilateral right angle trigonometry
Shape, the tooth angle that pre- crowded teeth shape is extruded are 55 °, and the tooth angle that smart crowded teeth shape is extruded is 90 ° of (actually tooth form metal sealings
The tooth form of pad 30 is not limited to equilateral right angled triangle, can also be other tooth forms such as equilateral acute triangle, and herein only one
A embodiment).
As shown in Figure 1, in the present embodiment, continuously compound fine-punching formation device includes the first cope plate 15, is located at for walk
First lower template 19 of 15 underface of the first cope plate, the first upper die plate 16 for being fixed on 15 bottom side of the first cope plate and edge
What machine direction was set gradually rush endoporus and annular incision forming assembly, pre- crowded teeth shape component, smart crowded teeth shape component, rush endoporus and
Blanking component.It rushes endoporus and annular incision forming assembly includes the first holding pad 5 for being located at 16 lower section of the first upper die plate, passes through
The first transmission rod 2 that first cope plate 15 and the first upper die plate 16 are fixedly connected with the first holding pad 5, upper end are each attached to
One cope plate, 15 bottom side and lower end both pass through in the punching of lance punch 3 and first of the first upper die plate 16 and the first holding pad 5
Hole punch-pin 4 is each attached to 19 top side of the first lower template and is located at lance punch 3 and first and rushes immediately below endoporus punch-pin 4
Notch cavity plate 23 and first rush endoporus cavity plate 24；When work, the first transmission rod 2 drives the first holding pad 5 to compress plate 1, cuts
Mouthful punch-pin 3 and first rushes endoporus punch-pin 4 and moves down and rush the cooperation of endoporus cavity plate 24 with notch cavity plate 23 and first respectively and completes
Annular incision shapes and rushes endoporus.Pre- crowded teeth shape component includes the second holding pad 8 for being located at 16 lower section of the first upper die plate, wears
It crosses the second transmission rod 6, upper end that the first cope plate 15 and the first upper die plate 16 be fixedly connected with the second holding pad 8 and is fixed on
One cope plate, 15 bottom side and lower end pass through the pre- crowded teeth punch-pin 7 of the first upper die plate 16 and the second holding pad 8, are fixed on first
19 top side of lower template and the pre- crowded teeth cavity plate 22 immediately below pre- crowded teeth punch-pin 7；When work, the second transmission rod 6 drives the
Two holding pads 8 compress plate 1, and pre- crowded teeth punch-pin 7 moves down and completes pre- crowded teeth shape with the cooperation of pre- crowded teeth cavity plate 22.Smart crowded teeth shape
Component includes the third holding pad 11 for being located at 16 lower section of the first upper die plate, passes through the first cope plate 15 and the first upper die plate 16
The third transmission rod 9 that is fixedly connected with third holding pad 11, upper end are fixed on 15 bottom side of the first cope plate and lower end passes through the
The smart crowded teeth punch-pin 10 of one upper die plate 16 and third holding pad 11 is fixed on 19 top side of the first lower template and positioned at smart crowded teeth
Smart crowded teeth cavity plate 21 immediately below punch-pin 10；When work, third transmission rod 9 drives third holding pad 11 to compress plate 1, smart crowded teeth
Punch-pin 10, which moves down and coordinates with smart crowded teeth cavity plate 21, completes smart crowded teeth shape.It rushes endoporus and blanking component is located at the first upper die plate
4th holding pad 17 of 16 lower sections is fixedly connected with the 4th holding pad 17 across the first cope plate 15 and the first upper die plate 16
4th transmission rod 12, upper end are each attached to 15 bottom side of the first cope plate and lower end and both pass through the first upper die plate 16 and the 4th pressure
The blanking punch 13 of flitch 17 and second rushes endoporus punch-pin 14, is each attached to 19 top side of the first lower template and is located at blanking
Punch-pin 13 and the second blanking die 18 and second for rushing immediately below endoporus punch-pin 14 rush endoporus cavity plate 20.When work, the 4th power transmission
Bar 12 drive the 4th holding pad 17 compress plate 1, blanking punch 13 and second rush endoporus punch-pin 14 move down and respectively with fall
Material cavity plate 18 and second rushes the cooperation of endoporus cavity plate 20 completion blanking and rushes endoporus.
As shown in Figure 4 and Figure 5, in the present embodiment, deburring extrusion die assembly includes the second cope plate 25, is located at second
Second lower template 29 of 25 underface of cope plate, the second upper die plate 27 for being fixed on 25 bottom side of the second cope plate, upper end are fixed
The extruding punch 26 of the second upper die plate 27 is passed through in 25 bottom side of the second cope plate and lower end, is fixed on the second lower template 29 top
Side and the Extruding die 28 immediately below extruding punch 26.When work, the second cope plate 25 drives extruding punch 26 to move down
And coordinates with Extruding die 28 and complete to squeeze deburring 31.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (4)
1. a kind of continuous compound fine-punching formation technique of tooth form metallic gasket walk, it is characterised in that：Include the following steps,
1) plate is placed on walk continuously on compound fine-punching formation device, plate is in the continuous compound fine-punching formation device of walk
It is sequentially completed in four stations and rushes endoporus and annular incision forming, pre- crowded teeth shape, smart crowded teeth shape, rushes after endoporus and blanking as tooth
Shape metallic gasket；
2) tooth form metallic gasket is taken out from compound fine-punching formation device and is put into squeezing for deburring extrusion die assembly by manipulator
It presses on mould；
3) extruding punch of deburring extrusion die assembly moves down to coordinate with Extruding die and squeezes tooth form metallic gasket, squeezes recessed
The bottom portion of groove edge of mould is fillet, and when tooth form metallic gasket is extruded, the burr of tooth form metallic gasket edge passes through
Fillet is folded inward and is extruded embedded tooth form metallic gasket surface.
2. the continuous compound fine-punching formation technique of tooth form metallic gasket walk as described in claim 1, it is characterised in that：Work as tooth
When the tooth form of shape metallic gasket is equilateral right angled triangle, the tooth angle that pre- crowded teeth shape is extruded is 55 °, and smart crowded teeth shape squeezes out
The tooth angle come is 90 °.
3. the continuous compound fine-punching formation technique of tooth form metallic gasket walk as claimed in claim 1 or 2, it is characterised in that：
Continuously compound fine-punching formation device includes the first cope plate, the first lower template immediately below the first cope plate, fixation for walk
Endoporus and annular incision forming group are rushed in the first upper die plate of the first cope plate bottom side and along what machine direction was set gradually
Part, smart crowded teeth shape component, rushes endoporus and blanking component at pre- crowded teeth shape component；
It rushes endoporus and annular incision forming assembly includes being located at the first holding pad below the first upper die plate, passing through the first upper mold
The first transmission rod that plate and the first upper die plate are fixedly connected with the first holding pad, upper end are each attached to the first cope plate bottom side simultaneously
And lower end both passes through the lance punch of the first upper die plate and the first holding pad and first and rushes endoporus punch-pin, is each attached under first
Template top side and it is located at lance punch and the first notch cavity plate and first for rushing immediately below endoporus punch-pin rushes endoporus cavity plate；
Pre- crowded teeth shape component include be located at the first upper die plate below the second holding pad, pass through the first cope plate and the first upper mold
The second transmission rod that backing plate is fixedly connected with the second holding pad, upper end are fixed on the first cope plate bottom side and lower end and pass through first
The pre- crowded teeth punch-pin of upper die plate and the second holding pad is fixed on the first lower template top side and immediately below pre- crowded teeth punch-pin
Pre- crowded teeth cavity plate；
Smart crowded teeth shape component include be located at the first upper die plate below third holding pad, pass through the first cope plate and the first upper mold
Third transmission rod that backing plate is fixedly connected with third holding pad, upper end are fixed on the first cope plate bottom side and lower end and pass through first
The smart crowded teeth punch-pin of upper die plate and third holding pad is fixed on the first lower template top side and immediately below smart crowded teeth punch-pin
Smart crowded teeth cavity plate；
It rushes endoporus and blanking component is located at the 4th holding pad below the first upper die plate, passes through the first cope plate and the first upper mold
The 4th transmission rod that backing plate is fixedly connected with the 4th holding pad, upper end is each attached to the first cope plate bottom side and lower end both passes through
The blanking punch of first upper die plate and the 4th holding pad and second rush endoporus punch-pin, be each attached to the first lower template top side and
It is located at blanking punch and the second blanking die and second for rushing immediately below endoporus punch-pin rushes endoporus cavity plate.
4. the continuous compound fine-punching formation technique of tooth form metallic gasket walk as claimed in claim 1 or 2, it is characterised in that：
Deburring extrusion die assembly includes the second cope plate, the second lower template immediately below the second cope plate, is fixed on second
Second upper die plate of template bottom side, upper end are fixed on the second cope plate bottom side and lower end and pass through the extruding of the second upper die plate
Punch-pin is fixed on the second lower template top side and the Extruding die immediately below extruding punch.
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| CN201710290693.6A CN107008806B (en) | 2017-04-26 | 2017-04-26 | A kind of continuous compound fine-punching formation technique of tooth form metallic gasket walk |
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| CN201710290693.6A CN107008806B (en) | 2017-04-26 | 2017-04-26 | A kind of continuous compound fine-punching formation technique of tooth form metallic gasket walk |
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| CN107008806B true CN107008806B (en) | 2018-10-09 |
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| CN107282738B (en) * | 2017-08-18 | 2018-10-16 | 重庆友擘机械制造有限公司 | A kind of process for stamping of washer |
| CN108672549A (en) * | 2018-06-22 | 2018-10-19 | 西安飞机工业（集团）有限责任公司 | A kind of titanium alloy washer shaping dies and forming method |
| CN111468615B (en) * | 2020-05-26 | 2024-05-28 | 广州市华冠精冲零件有限公司 | Forming die of fine blanking part with half-blanking small annular gear |
| CN112387869B (en) * | 2020-10-28 | 2022-11-01 | 东风汽车零部件(集团)有限公司通用铸锻分公司 | Continuous stamping die of inside and outside sawtooth lock washer |
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| JP3565395B2 (en) * | 1997-02-14 | 2004-09-15 | 大豊工業株式会社 | Washer manufacturing method |
| US7331874B2 (en) * | 2006-07-05 | 2008-02-19 | Tech Stell Co., Ltd. | Method for producing circular washer |
| SE534901C2 (en) * | 2010-04-20 | 2012-02-07 | Nord Lock Ab | A method and plant for the production of trays and a tray |
| CN202151656U (en) * | 2011-03-22 | 2012-02-29 | 浙江三和机电科技有限公司 | Gasket stamping die |
| CN202343750U (en) * | 2011-11-23 | 2012-07-25 | 湖北汉光科技股份有限公司 | Multi-station machining die |
| CN205702216U (en) * | 2016-06-03 | 2016-11-23 | 慈溪埃弗龙密封件有限公司 | A kind of gasket seal many anchor rings pressing equipment |
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