CN106944539B - A kind of car tooth form clutch hub body stretching punch mechanism - Google Patents
A kind of car tooth form clutch hub body stretching punch mechanism Download PDFInfo
- Publication number
- CN106944539B CN106944539B CN201710341414.4A CN201710341414A CN106944539B CN 106944539 B CN106944539 B CN 106944539B CN 201710341414 A CN201710341414 A CN 201710341414A CN 106944539 B CN106944539 B CN 106944539B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 238000004080 punching Methods 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims description 16
- 230000003116 impacting effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
-
- 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
- B21D28/30—Perforating, i.e. punching holes in annular parts, e.g. rims
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a kind of car tooth form clutch hub body stretching punch mechanisms, including rack, the middle top surface of the top plate of the rack is fixed with cavity plate mounting blocks, there is installation cavity in the middle part of the top surface of cavity plate mounting blocks, cavity plate sleeve is in installation cavity and is bolted to connection on cavity plate mounting blocks, upper limit ring body is pressed against on the top surface of cavity plate mounting blocks and the top surface of cavity plate, and upper limit ring body is fixedly connected on the top surface of cavity plate mounting blocks and cavity plate by multiple bolts；The lower part two sides of support frame as described above are equipped with side support plate, the upper and lower part of the lateral wall of side support plate is respectively and fixedly provided with side connecting plate, the both ends of vertical screw rod are hinged on two side connecting plates, driving motor is fixed on one of side connecting plate, the output shaft of driving motor is splined shaft, and splined shaft sleeve is in the splined hole that one end of vertical screw rod has.It will be stretched and punching carries out on the same station, without repeatedly disassembly installation, greatly improves working efficiency, effect is good.
Description
Technical field:
The present invention relates to automobile parts to make technical field, and more specifically to a kind of car tooth form clutch hub body is used
Stretch punch mechanism.
Background technique:
Existing automobile gear clutch hub body includes interior hub and outer hub, a link in manufacture craft be need by
The hub body of pre-profiling is stretched, and is needed to take out hub body to be fixed on again in clamping device after stretching and be fixed, then corresponds to it
Position is punched out, and installing and dismounting is multiple, low efficiency, and effect is undesirable.
Summary of the invention:
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of car tooth form clutch hub body stretching punching
Mechanism, it will be stretched and punching carries out on the same station, without repeatedly disassembly installation, greatly improves working efficiency, imitates
Fruit is good.
The solution to the technical problem of the present invention is as follows:
A kind of car tooth form clutch hub body stretching punch mechanism, including rack, the middle part top of the top plate of the rack
Face is fixed with cavity plate mounting blocks, has installation cavity in the middle part of the top surface of cavity plate mounting blocks, cavity plate sleeve is in installation cavity and passes through spiral shell
Bolt is fixedly connected on cavity plate mounting blocks, and upper limit ring body is pressed against on the top surface of cavity plate mounting blocks and the top surface of cavity plate, the upper limit
Position ring body is fixedly connected on the top surface of cavity plate mounting blocks and cavity plate by multiple bolts；
Support frame is fixed on the top surface of the top plate of the rack, the middle top surface of the top plate of support frame is fixed with drawing oil
Cylinder, the push rod for stretching oil cylinder pass through the top plate of support frame and are fixed with connecting plate, and the bottom surface of connecting plate is fixed with punch-pin, and punch-pin is stretched
Enter in cavity plate, workpiece to be processed is clamped between punch-pin and cavity plate；
The lower part two sides of support frame as described above are equipped with side support plate, and the upper and lower part of the lateral wall of side support plate is respectively and fixedly provided with
Side connecting plate, the both ends of vertical screw rod are hinged on two side connecting plates, are fixed with driving motor on one of side connecting plate,
The output shaft of driving motor is splined shaft, and in the splined hole that one end of vertical screw rod has, movable block is spirally connected splined shaft sleeve
In vertical screw rod, connecting column is fixed on movable block, the inner end of connecting column is fixed with vertical plate, the upper outside wall of vertical plate
It is fixed with punching press oil cylinder, the push rod of punching press oil cylinder passes through vertical plate and is fixed with the first guide pad, and the inner end of the first guide pad is solid
Surely there is formed punch, positional cylinder is fixed on the lower outside wall of vertical plate, the push rod of positional cylinder passes through vertical plate and is fixed with
Second guide pad, the inner end of the second guide pad are fixed with protective head, the top of the first guide pad and the second guide pad and installation cavity
The laterally steering through-hole having on side wall is corresponding, has the impact through-hole communicated with laterally steering through-hole on the side wall of cavity plate,
Impact through-hole correspond to workpiece to be processed to punching at, the corresponding impact through-hole of protective head and formed punch, connecting column, punching press oil cylinder and calmly
In the vertical through slot that position oil cylinder sleeve has in side support plate, the front-rear side walls of connecting column are close to the inner sidewall of vertical through slot.
The end of the push rod for stretching oil cylinder is fixed with positioning plate, is fixed with connecting plate in the middle part of the bottom surface of positioning plate, institute
The top surface for stating positioning plate is fixed with multiple vertical bars, and vertical bar stretches out the top plate of support frame.
Self-lubricating layer is fixed on the inner sidewall of the movable block, self-lubricating layer is pressed against on the lateral wall of side support plate.
There is jack on the lateral wall for impacting the corresponding punch-pin of through-hole, be inserted with surge guard block in jack.
Buffer spring is inserted in the jack, the inner end of buffer spring is fixed on the inner face of jack, buffer spring
Outer end be fixed with surge guard block.
The outer end face of the surge guard block is bolted with outer protective block, and the lateral wall of outer protective block is curved wall, with
The lateral wall of punch-pin is on same vertical arcwall face.
It is fixed with and is dominated to supporting block on the top plate of the rack of the two sides of the cavity plate mounting blocks, dominated before supporting block
There is guide groove, guide pad sleeve is dominated in guide groove and is fixed with guiding oil cylinder on the rear surface of supporting block, lead on wall surface
Guide groove is protruded into the push rod of oil cylinder and is fixed on the rear surface of guide pad, and the middle part of the front face of guide pad, which has, laterally leads
To groove, laterally steering groove is corresponding with the first guide pad, the second guide pad.
Protrusion effect of the invention is:
Compared with prior art, it will be stretched and punching carries out on the same station, without repeatedly disassembly installation, greatly
Big to improve working efficiency, effect is good.
Detailed description of the invention:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is partial enlarged view of the invention；
Fig. 3 is the partial top view dominated between supporting block and cavity plate mounting blocks of the invention.
Specific embodiment:
Embodiment is shown in a kind of as shown in Figure 1 to Figure 3, car tooth form clutch hub body stretching punch mechanism, including rack
10, the middle top surface of the top plate of the rack 10 is fixed with cavity plate mounting blocks 11, has peace in the middle part of the top surface of cavity plate mounting blocks 11
It behave affectedly 12,14 sleeve of cavity plate is in installation cavity 12 and is bolted to connection on cavity plate mounting blocks 11, upper limit ring body 16
It is pressed against on the top surface of cavity plate mounting blocks 11 and the top surface of cavity plate 14, upper limit ring body 16 is fixedly connected on recessed by multiple bolts
On the top surface of mould mounting blocks 11 and cavity plate 14；
Support frame 20 is fixed on the top surface of the top plate of the rack 10, the middle top surface of the top plate of support frame 20 is fixed with
Oil cylinder 21 is stretched, the push rod for stretching oil cylinder 21 passes through the top plate of support frame 20 and is fixed with connecting plate 22, the bottom surface of connecting plate 22
It is fixed with punch-pin 23, punch-pin 23 protrudes into cavity plate 14, and workpiece to be processed 1 is clamped between punch-pin 23 and cavity plate 14；
The lower part two sides of support frame as described above 20 are equipped with side support plate 24, and the upper and lower part of the lateral wall of side support plate 24 is equal
It is fixed with side connecting plate 25, the both ends of vertical screw rod 26 are hinged on two side connecting plates 25, on one of side connecting plate 25
It is fixed with driving motor 27, the output shaft of driving motor 27 is splined shaft, and splined shaft sleeve has in one end of vertical screw rod 26
Splined hole in, movable block 261 is screwed onto vertical screw rod 26, connecting column 262 is fixed on movable block 261, connecting column 262
Inner end is fixed with vertical plate 263, and the upper outside wall of vertical plate 263 is fixed with punching press oil cylinder 264, the push rod of punching press oil cylinder 264
Across vertical plate 263 and it is fixed with the first guide pad 265, the inner end of the first guide pad 265 is fixed with formed punch 266, vertical plate 263
Lower outside wall on be fixed with positional cylinder 267, the push rod of positional cylinder 267 passes through vertical plate 263 and is fixed with second and leads
To block 268, the inner end of the second guide pad 268 is fixed with protective head 269, the first guide pad 265 and the second guide pad 268 and installation
The laterally steering through-hole 2 having in the upper portion side wall of chamber 12 is corresponding, has and 2 phase of laterally steering through-hole on the side wall of cavity plate 14
Logical impact through-hole 3, the corresponding workpiece to be processed 1 of impact through-hole 3 to punching at, protective head 269 and the corresponding impact of formed punch 266 are logical
Hole 3, in the vertical through slot 251 that connecting column 262, punching press oil cylinder 264 and 267 sleeve of positional cylinder have in side support plate 24,
The front-rear side walls of connecting column 262 are close to the inner sidewall of vertical through slot 251.
Further, the end of the push rod for stretching oil cylinder 21 is fixed with positioning plate 240, the bottom surface of positioning plate 240
Middle part is fixed with connecting plate 22, and the top surface of the positioning plate 240 is fixed with multiple vertical bars 242, and vertical bar 242 stretches out support frame
20 top plate.
Further, it is fixed with self-lubricating layer 4 on the inner sidewall of the movable block 261, self-lubricating layer 4 is pressed against collateral
On the lateral wall of fagging 24.
Further, there is jack 231 on the lateral wall of the impact corresponding punch-pin 23 of through-hole 3, is inserted in jack 231
It is cased with surge guard block 232.
Further, it is inserted with buffer spring 233 in the jack 231, the inner end of buffer spring 233 is fixed on jack
On 231 inner face, the outer end of buffer spring 233 is fixed with surge guard block 232.
Further, the outer end face of the surge guard block 232 is bolted with outer protective block 234, outer protective block 234 it is outer
Side wall is curved wall, is on same vertical arcwall face with the lateral wall of punch-pin 23.
Further, it is fixed with and is dominated to supporting block on the top plate of the rack 10 of the two sides of the cavity plate mounting blocks 11
30, dominate has guide groove 31 on the front face of supporting block 30, and 32 sleeve of guide pad is dominated in guide groove 31 to supporting block
Guiding oil cylinder 34 is fixed on 30 rear surface, after the push rod of guiding oil cylinder 34 protrudes into guide groove 31 and is fixed on guide pad 32
On wall surface, the middle part of the front face of guide pad 32 has laterally steering groove 33, laterally steering groove 33 and the first guide pad
265, the second guide pad 268 is corresponding.
Working principle: workpiece to be processed 1 is placed in cavity plate 14, at this point, the second guide pad 268 is recessed along laterally steering
Slot 33 protrudes into laterally steering through-hole 2, and 269 sleeve of protective head impact through-hole 3 in, stretch oil cylinder 21 push rod push down on
Dynamic, so that punch-pin 23 protrudes into cavity plate 14, workpiece to be processed 1 is clamped between punch-pin 23 and cavity plate 14, realizes and stretches, has stretched
Cheng Hou, the push rod retraction of positional cylinder 267, so that the second guide pad 268 and protective head 269 stretch out laterally steering groove 33, so
Afterwards, the push rod retraction of guiding oil cylinder 34, so that guide pad 32 bounces back, driving motor 27 is run, so that punching press oil cylinder 264 declines,
Then, the push rod of guiding oil cylinder 34 is released again, and the push rod of punching press oil cylinder 264 is released, so that the first guide pad 268 is along cross
It is protruded into laterally steering through-hole 2 to guiding groove 33, and formed punch 266 protrudes into impact through-hole 3 and to workpiece to be processed 1 wait rush
It is punched out at hole, and the block gone out is pressed against on outer protective block 234, then, the push rod for stretching oil cylinder 21 is promoted, so that
Punch-pin 23 is promoted, and then, can be taken out product, very convenient.
And outer protective block 234 using over time can from surge guard block 232 dismounting and change, it is very convenient.
Finally, the above embodiments are only used to illustrate the present invention, and not limitation of the present invention, related technical field
Those of ordinary skill can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore
All equivalent technical solutions also belong to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (7)
1. a kind of car tooth form clutch hub body stretching punch mechanism, including rack (10), it is characterised in that: the rack
(10) middle top surface of top plate is fixed with cavity plate mounting blocks (11), has installation cavity in the middle part of the top surface of cavity plate mounting blocks (11)
(12), cavity plate (14) sleeve in installation cavity (12) and is bolted to connection on cavity plate mounting blocks (11), upper limit ring
Body (16) is pressed against on the top surface of cavity plate mounting blocks (11) and the top surface of cavity plate (14), and upper limit ring body (16) passes through multiple bolts
It is fixedly connected on the top surface of cavity plate mounting blocks (11) and cavity plate (14)；
It is fixed with support frame (20) on the top surface of the top plate of the rack (10), the middle top surface of the top plate of support frame (20) is fixed
Have stretching oil cylinder (21), the push rod for stretching oil cylinder (21) passes through the top plate of support frame (20) and is fixed with connecting plate (22), connects
The bottom surface of plate (22) is fixed with punch-pin (23), and punch-pin (23) protrudes into cavity plate (14), and workpiece to be processed (1) is clamped in punch-pin (23)
Between cavity plate (14)；
The lower part two sides of support frame as described above (20) are equipped with side support plate (24), the upper and lower part of the lateral wall of side support plate (24)
It is respectively and fixedly provided with side connecting plate (25), the both ends of vertical screw rod (26) are hinged on two side connecting plates (25), and one of side connects
It is fixed on fishplate bar (25) driving motor (27), the output shaft of driving motor (27) is splined shaft, and splined shaft sleeve is in vertical spiral shell
In the splined hole that one end of bar (26) has, movable block (261) is screwed onto vertical screw rod (26), fixed on movable block (261)
Have connecting column (262), the inner end of connecting column (262) is fixed with vertical plate (263), and the upper outside wall of vertical plate (263) is fixed
Having punching press oil cylinder (264), the push rod of punching press oil cylinder (264) passes through vertical plate (263) and is fixed with the first guide pad (265), the
The inner end of one guide pad (265) is fixed with formed punch (266), is fixed with positional cylinder on the lower outside wall of vertical plate (263)
(267), the push rod of positional cylinder (267) passes through vertical plate (263) and is fixed with the second guide pad (268), the second guide pad
(268) inner end is fixed with protective head (269), and the first guide pad (265) and the second guide pad (268) are upper with installation cavity (12)
The laterally steering through-hole (2) having on portion's side wall is corresponding, has on the side wall of cavity plate (14) and communicates with laterally steering through-hole (2)
Impact through-hole (3), impact through-hole (3) corresponding workpiece to be processed (1) to punching at, protective head (269) and formed punch (266) are right
It should impact through-hole (3), connecting column (262), punching press oil cylinder (264) and positional cylinder (267) sleeve have on side support plate (24)
In the vertical through slot (251) having, the front-rear side walls of connecting column (262) are close to the inner sidewall of vertical through slot (251).
2. a kind of car tooth form clutch hub body according to claim 1 stretching punch mechanism, it is characterised in that: described
The end for stretching the push rod of oil cylinder (21) is fixed with positioning plate (240), is fixed with connecting plate in the middle part of the bottom surface of positioning plate (240)
(22), the top surface of the positioning plate (240) is fixed with multiple vertical bars (242), and vertical bar (242) stretches out the top of support frame (20)
Plate.
3. a kind of car tooth form clutch hub body according to claim 1 stretching punch mechanism, it is characterised in that: described
It is fixed on the inner sidewall of movable block (261) self-lubricating layer (4), self-lubricating layer (4) is pressed against the lateral wall of side support plate (24)
On.
4. a kind of car tooth form clutch hub body according to claim 1 stretching punch mechanism, it is characterised in that: described
Impacting on the lateral wall of through-hole (3) corresponding punch-pin (23) has jack (231), and jack is inserted with surge guard block in (231)
(232)。
5. a kind of car tooth form clutch hub body according to claim 4 stretching punch mechanism, it is characterised in that: described
It being inserted in jack (231) buffer spring (233), the inner end of buffer spring (233) is fixed on the inner face of jack (231),
The outer end of buffer spring (233) is fixed with surge guard block (232).
6. a kind of car tooth form clutch hub body according to claim 5 stretching punch mechanism, it is characterised in that: described
The outer end face of surge guard block (232) is bolted with outer protective block (234), and the lateral wall of outer protective block (234) is curved wall,
It is on same vertical arcwall face with the lateral wall of punch-pin (23).
7. a kind of car tooth form clutch hub body according to claim 1 stretching punch mechanism, it is characterised in that: described
It is fixed with and is dominated to supporting block (30) on the top plate of the rack (10) of the two sides of cavity plate mounting blocks (11), dominated to supporting block (30)
Front face on there are guide groove (31), guide pad (32) sleeve dominates the rear wall to supporting block (30) in guide groove (31)
It is fixed on face guiding oil cylinder (34), after the push rod of guiding oil cylinder (34) protrudes into guide groove (31) and is fixed on guide pad (32)
On wall surface, the middle part of the front face of guide pad (32) has laterally steering groove (33), and laterally steering groove (33) is led with first
It is corresponding to block (265), the second guide pad (268).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341414.4A CN106944539B (en) | 2017-05-16 | 2017-05-16 | A kind of car tooth form clutch hub body stretching punch mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341414.4A CN106944539B (en) | 2017-05-16 | 2017-05-16 | A kind of car tooth form clutch hub body stretching punch mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106944539A CN106944539A (en) | 2017-07-14 |
| CN106944539B true CN106944539B (en) | 2019-08-13 |
Family
ID=59479587
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710341414.4A Active CN106944539B (en) | 2017-05-16 | 2017-05-16 | A kind of car tooth form clutch hub body stretching punch mechanism |
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| Country | Link |
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| CN (1) | CN106944539B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107335744B (en) * | 2017-08-25 | 2018-09-21 | 重庆市庆颖摩托车配件有限公司 | Perforating device for end cover of engine |
| CN109647981B (en) * | 2017-10-10 | 2022-02-08 | 湖北宏力液压科技有限公司 | A multilayer stamping die for carrier tripod |
| CN108097807A (en) * | 2017-12-12 | 2018-06-01 | 佛山市鼎翘五金有限公司 | A kind of processing unit (plant) of sheet metal member automation side punching bending and forming integral type |
| CN108994174B (en) * | 2018-07-20 | 2019-12-13 | 苏州万荣汽配科技有限公司 | Automobile annular disc part side punching progressive die and side punching process |
| CN110449504B (en) * | 2019-09-10 | 2024-02-02 | 成都宏明双新科技股份有限公司 | Machining die and machining method for side groove of shallow-bottom small-diameter thin-wall stretching piece |
| CN111745046B (en) * | 2020-05-21 | 2022-04-12 | 盐城工业职业技术学院 | Steel structure punching equipment |
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| JPS5877724A (en) * | 1981-11-02 | 1983-05-11 | Nissan Motor Co Ltd | Manufacture of cylindrical parts |
| CN201432054Y (en) * | 2009-05-11 | 2010-03-31 | 襄樊东昇机械有限公司 | Die compounding blanking, stretching and lateral punching |
| CN205668802U (en) * | 2016-04-20 | 2016-11-02 | 徐灵娟 | A kind of grasping mechanism easy for installation |
| CN106216488A (en) * | 2016-09-26 | 2016-12-14 | 东莞市联洲知识产权运营管理有限公司 | A kind of mechanism for fire-fighting host shell sidewall is punched out |
| CN106424309A (en) * | 2016-09-26 | 2017-02-22 | 东莞市联洲知识产权运营管理有限公司 | Firefighting host machine shell side wall punching device |
| CN207026254U (en) * | 2017-05-16 | 2018-02-23 | 李彩英 | A kind of car tooth form clutch hub body stretching punch mechanism |
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2017
- 2017-05-16 CN CN201710341414.4A patent/CN106944539B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5877724A (en) * | 1981-11-02 | 1983-05-11 | Nissan Motor Co Ltd | Manufacture of cylindrical parts |
| CN201432054Y (en) * | 2009-05-11 | 2010-03-31 | 襄樊东昇机械有限公司 | Die compounding blanking, stretching and lateral punching |
| CN205668802U (en) * | 2016-04-20 | 2016-11-02 | 徐灵娟 | A kind of grasping mechanism easy for installation |
| CN106216488A (en) * | 2016-09-26 | 2016-12-14 | 东莞市联洲知识产权运营管理有限公司 | A kind of mechanism for fire-fighting host shell sidewall is punched out |
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| CN207026254U (en) * | 2017-05-16 | 2018-02-23 | 李彩英 | A kind of car tooth form clutch hub body stretching punch mechanism |
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| Publication number | Publication date |
|---|---|
| CN106944539A (en) | 2017-07-14 |
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