CN104440319A - Shock absorber bottom cylinder processing tooling - Google Patents
Shock absorber bottom cylinder processing tooling Download PDFInfo
- Publication number
- CN104440319A CN104440319A CN201410735952.8A CN201410735952A CN104440319A CN 104440319 A CN104440319 A CN 104440319A CN 201410735952 A CN201410735952 A CN 201410735952A CN 104440319 A CN104440319 A CN 104440319A
- Authority
- CN
- China
- Prior art keywords
- guide rail
- panel
- slide
- shock
- fluted disc
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/04—Work clamping means using fluid means or a vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Actuator (AREA)
Abstract
The invention provides a shock absorber bottom cylinder processing tooling. The shock absorber bottom cylinder processing tooling comprises a base, wherein a propelling mechanism is mounted at the first end of the base; an ejector pin is mounted at the second end of the base; a guide rail is arranged on the base between the propelling mechanism and the ejector pin; a sliding base is mounted on the guide rail and is connected with the propelling mechanism; the propelling mechanism can be used for pushing the sliding base and the ejector pin to be close to each other or far from each other; a positioning tooth disk is mounted on the sliding base; the center of the positioning tooth disk directly faces the center of the ejector pin. According to the shock absorber bottom cylinder processing tooling, an cylinder acts quickly; the condition that the clamping force is not enough is avoided; the positioning tooth disk can be used for avoiding the deflection of a cylinder body caused by uneven stress in the processing process; an inlay bar adjusting structure is additionally arranged, so that the abrasion of a guide rail and a dovetail groove can be modified; the clamping stagnation of the sliding base in the moving process is avoided; the great shaking is avoided; the quality of products is ensured; the labor intensity is alleviated; the production efficiency is improved; the cost is reduced.
Description
Technical field
The present invention relates to Machining Technology field, particularly a kind of shock-absorber cylinder processing tool.
Background technology
The shock-absorber cylinder work in-process heart adds man-hour, need to carry out clamping to end cylinder to fix, require that center, cylinder two ends, end clamping is stablized, accurate positioning, after clamping, end cylinder can not rotate, former shock-absorber cylinder machining center clamp is screw thread screw type, manually rotates thread handle, promotes end plate advance and carrys out top tight workpiece, clamping efficiency is low, fixture reliability is lower, and operation labour intensity is large, and production efficiency can not meet the needs of production in enormous quantities.
Summary of the invention
The deficiencies in the prior art in view of the above, the object of the present invention is to provide a kind of shock-absorber cylinder processing tool, solve the impact that existing fixture exists manual low speed precession mode, fixture unbalance stress, cause fixture cannot fast reaction, processing precision of products is on the low side, operation labour intensity is large, can not meet the needs of production in enormous quantities.
For achieving the above object and other relevant objects, the invention provides a kind of shock-absorber cylinder processing tool, comprise base, the first end of base is provided with propulsive mechanism, second end is provided with thimble, base between this propulsive mechanism and thimble is provided with guide rail, described guide rail is provided with slide, this slide is connected with propulsive mechanism, described propulsive mechanism can promote slide and thimble near or away from, described slide is provided with location fluted disc, center and the described thimble center of this location fluted disc are just right.
Adopt said structure, end cylinder is adding man-hour, and one end central term is on thimble, and other end auxiliary clamp is fixed on the fluted disc of location, promote to hold out against by propulsive mechanism again, because location fluted disc is fixed, can prevent the end cylinder from rotating in process, advance clamping rapid by propulsive mechanism, fixture uniform force, reduce operator's labour intensity, improve clamping efficiency, meet the needs produced in enormous quantities.
The mount pad that described slide comprises horizontally disposed supporting seat and vertically arranges, described supporting seat is arranged on guide rail, described mount pad offers installing hole, and described location fluted disc is arranged in this installing hole and is also fixed by the taper pin (band internal thread) vertically worn.This structure is convenient to locate the dismounting of fluted disc, and be easier to ensure index dial setting angle, and be convenient to fix, location fluted disc is index dial, and at the bottom of when preventing clamping, cylinder comes off.
Described positioning tooth disk center offers positioning through hole, and described location fluted disc has been uniformly distributed circumferentially projection on the end face of thimble, and the location fluted disc end face between described positioning through hole and projection offers a circle locating slot.
Described projection is fan-shaped, and this projection both sides linearly have inclination angle.
Described location fluted disc outer wall is stepped, the miner diameter end of location fluted disc stretches in described installing hole, the path section of location fluted disc offers the connecting hole vertical with its axial line, described mount pad upper surface offers the fixing hole corresponding with connecting hole, and described pin cone is located in fixing hole and connecting hole.
Described propulsive mechanism is cylinder, and the piston rod of this cylinder is connected with slide by contiguous block.
Described guide rail is dove-tail form guide rail, offers dovetail groove bottom described slide, and this slide is erected on guide rail, is provided with the first panel in the gap between dovetail groove cell wall and guide rail side, and this first panel is fixed on slide cell wall.
Described first panel cross section parallelogram structure, fit in this first panel and dovetail groove cell wall and guide rail side, described first panel offers draw-in groove, described slide is provided with adjusting bolt, adjusting bolt is with discoid card, this card is vertical with guide rail, and card stretches in draw-in groove, and the first panel and described slide are fixed.
Increase by the first panel adjust structure, so that revise the wearing and tearing of guide rail and dovetail groove, guarantee that slide there will not be clamping stagnation in motion process, also there will not be and rock more greatly, affect fixture by design direction action, thus ensure product quality.
Described base first end is fixed with end plate, this end plate is connected with the support bar of propulsive mechanism by level, described propulsive mechanism lower surface offers dovetail groove, described guide rail is dove-tail form guide rail, this propulsive mechanism is arranged on guide rail, be provided with the second panel in gap between dovetail groove cell wall and guide rail side, this second panel is by tightened bolt presses on guide rail, and this fastening bolt is located in propulsive mechanism side perpendicular to guide rail.
Described second panel cross section is that parallel this second panel trapezoidal is close to dovetail groove cell wall and guide rail side.
Arrange end plate and support bar props up cylinder, prevent it stressed excessive and slide, the second panel and fastening bolt are used for lock between propulsive mechanism and guide rail, prevent process fixture stroke from offseting.
As mentioned above, the invention has the beneficial effects as follows: when ensureing that frock crudy is stable, cancelling screw thread precession structure, change cylinder into and advance, reach the object moved reciprocatingly fast, there will not be the situation that chucking power is inadequate, reduce manual operation intensity; Increase the location fluted disc structure of calibration, the cylindrical shell preventing process unbalance stress from causing deflects; Increase panel adjust structure; so that revise the wearing and tearing of guide rail and dovetail groove; guarantee that slide there will not be clamping stagnation in motion process; also there will not be and rock more greatly; affect fixture not according to design direction action, thus ensure product quality, reduce labour intensity; enhance productivity, reduce costs.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is A direction view in Fig. 1;
Fig. 4 is B direction view in Fig. 1;
Fig. 5 is the structural representation of locating fluted disc in the embodiment of the present invention;
Fig. 6 is the sectional view of Fig. 5;
Fig. 7 is C rotation direction view in Fig. 5.
Piece mark explanation
1 base
2 guide rails
3 propulsive mechanisms
4 cylinder support seats
5 slides
51 supporting seats
52 mount pads
53 taper pins
54 installing holes
55 contiguous blocks
6 location fluted discs
61 positioning through hole
62 connecting holes
63 locating slots
64 projections
7 thimbles
81 first panels
82 adjusting bolts
83 second panels
84 fastening bolts
9 support bars
10 end plates
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present invention and effect easily.
As shown in Figures 1 to 4, the invention provides a kind of shock-absorber cylinder processing tool, comprise base 1, base 1 first end is fixed with end plate 10, the first end of base 1 is also provided with propulsive mechanism 3, this end plate 10 is connected with the support bar 9 of propulsive mechanism 3 by level, base 1 second end is provided with thimble 7, this base 1 is provided with the guide rail 2 of dove-tail form, guide rail 2 is provided with slide 5, in this example, propulsive mechanism 3 is cylinder, the piston rod of this cylinder is connected with slide 5 by contiguous block 55, propulsive mechanism 3 can promote slide 5 and thimble 7 near or away from, slide 5 is provided with location fluted disc 6, center and thimble 7 center of this location fluted disc 6 are just right.
Slide 5 comprises the mount pad 52 of horizontally disposed supporting seat 51 and vertically setting, and supporting seat 51 is arranged on guide rail 2, mount pad 52 offers installing hole 54, and it is interior and fixing by the taper pin 53 vertically worn that location fluted disc 6 is arranged on this installing hole 54.
Dovetail groove is offered bottom supporting seat 51, this supporting seat 51 is erected on guide rail 2, the first panel 81 is provided with in gap between dovetail groove cell wall and guide rail 2 side, this panel is fixed on supporting seat 51 cell wall, first panel 81 cross section parallelogram structure, there is small tapering along its length, this first panel 81 is fitted with dovetail groove cell wall and guide rail 2 side, first panel 81 offers draw-in groove, supporting seat 51 is provided with adjusting bolt 82, adjusting bolt 82 is with discoid card, this card is vertical with guide rail 2, card stretches in draw-in groove, first panel 81 is fixed with supporting seat 51.
As shown in Figures 5 to 7, location fluted disc 6 outer wall is stepped, the miner diameter end of location fluted disc 6 stretches in installing hole 54, the path section of location fluted disc 6 offers the connecting hole 62 vertical with its axial line, mount pad 52 upper surface offers the fixing hole corresponding with connecting hole 62, pin cone 53 is located in fixing hole and connecting hole 62, fluted disc 6 center, location offers positioning through hole 61, location fluted disc 6 has been uniformly distributed circumferentially projection 64 on the end face of thimble 7, location fluted disc 6 end face between positioning through hole 61 and projection 64 offers a circle locating slot 63, locating slot 63 cross section profile is the trapezium structure that the little opening in bottom is large, projection 64 is in fan-shaped, these projection 64 both sides linearly have inclination angle.
Cylinder is arranged on guide rail 2 by cylinder support seat, cylinder support seat lower surface offers dovetail groove, guide rail 2 is dove-tail form guide rail 2, this propulsive mechanism 3 is arranged on guide rail 2, the second panel 83 is provided with in gap between dovetail groove cell wall and guide rail 2 side, this second panel 83 is pressed on guide rail 2 by fastening bolt 84, this fastening bolt 84 is located in propulsive mechanism 3 side perpendicular to guide rail 2, second panel 83 cross section is trapezoidal, and this second panel 83 is close to dovetail groove cell wall and guide rail 2 side.
End cylinder is adding man-hour, one end central term is on thimble 7, other end auxiliary clamp is fixed on the fluted disc 6 of location, promote to hold out against by propulsive mechanism 3 again, because location fluted disc 6 is fixed, can prevent the end cylinder from rotating in process, advance clamping rapid by propulsive mechanism 3, fixture uniform force, reduce operator's labour intensity, improve clamping efficiency, meet the needs produced in enormous quantities, increase by the first panel 81 adjust structure, so that revise the wearing and tearing of guide rail 2 and dovetail groove, guarantee that slide 5 there will not be clamping stagnation in motion process, also there will not be and rock more greatly, guarantee that fixture is by design direction action, thus guarantee product quality.Arrange end plate and support bar props up cylinder, prevent it stressed excessive and slide, the second panel 83 and fastening bolt 84, for locking between propulsive mechanism 3 and guide rail 2, prevent process fixture stroke from offseting.
Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. a shock-absorber cylinder processing tool, it is characterized in that: comprise base, the first end of base is provided with propulsive mechanism, second end is provided with thimble, the base between this propulsive mechanism and thimble is provided with guide rail, described guide rail is provided with slide, this slide is connected with propulsive mechanism, described propulsive mechanism can promote slide and thimble near or away from, described slide is provided with location fluted disc, center and the described thimble center of this location fluted disc are just right.
2. shock-absorber cylinder processing tool according to claim 1, it is characterized in that: the mount pad that described slide comprises horizontally disposed supporting seat and vertically arranges, described supporting seat is arranged on guide rail, described mount pad offers installing hole, and described location fluted disc is arranged in this installing hole also fixing by the pin cone vertically worn.
3. shock-absorber cylinder processing tool according to claim 2, it is characterized in that: described positioning tooth disk center offers positioning through hole, described location fluted disc has been uniformly distributed circumferentially projection on the end face of thimble, and the location fluted disc end face between described positioning through hole and projection offers a circle locating slot.
4. shock-absorber cylinder processing tool according to claim 4, is characterized in that: described projection is fan-shaped, this projection both sides linearly have inclination angle.
5. according to the shock-absorber cylinder processing tool that claim 2 is stated, it is characterized in that: described location fluted disc outer wall is stepped, the miner diameter end of location fluted disc stretches in described installing hole, the path section of location fluted disc offers the connecting hole vertical with its axial line, described mount pad upper surface offers the fixing hole corresponding with connecting hole, and described taper pin is located in fixing hole and connecting hole.
6. shock-absorber cylinder processing tool according to claim 1, is characterized in that: described propulsive mechanism is cylinder, and the piston rod of this cylinder is connected with slide by contiguous block.
7. shock-absorber cylinder processing tool according to claim 1, it is characterized in that: described guide rail is dove-tail form guide rail, dovetail groove is offered bottom described slide, this slide is erected on guide rail, be provided with the first panel in gap between dovetail groove cell wall and guide rail side, this first panel is fixed on slide cell wall.
8. shock-absorber cylinder processing tool according to claim 7, it is characterized in that: described first panel cross section parallelogram structure, fit in this first panel and dovetail groove cell wall and guide rail side, described first panel offers draw-in groove, described slide is provided with adjusting bolt, and adjusting bolt is with discoid card, and this card is vertical with guide rail, card stretches in draw-in groove, and the first panel and described slide are fixed.
9. shock-absorber cylinder processing tool according to claim 1, it is characterized in that: described base first end is fixed with end plate, this end plate is connected with the support bar of propulsive mechanism by level, described propulsive mechanism lower surface offers dovetail groove, described guide rail is dove-tail form guide rail, this propulsive mechanism is arranged on guide rail, the second panel is provided with in gap between dovetail groove cell wall and guide rail side, this second panel is by tightened bolt presses on guide rail, and this fastening bolt is located in propulsive mechanism side perpendicular to guide rail.
10. shock-absorber cylinder processing tool according to claim 9, is characterized in that: described second panel cross section is trapezoidal, and this second panel is close to dovetail groove cell wall and guide rail side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735952.8A CN104440319B (en) | 2014-12-05 | 2014-12-05 | Shock absorber bottom cylinder processing tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735952.8A CN104440319B (en) | 2014-12-05 | 2014-12-05 | Shock absorber bottom cylinder processing tooling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104440319A true CN104440319A (en) | 2015-03-25 |
| CN104440319B CN104440319B (en) | 2017-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410735952.8A Expired - Fee Related CN104440319B (en) | 2014-12-05 | 2014-12-05 | Shock absorber bottom cylinder processing tooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104440319B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694302A (en) * | 2017-02-28 | 2017-05-24 | 江苏冠达通电子科技有限公司 | Automatic adhesive-coating device |
| CN108381373A (en) * | 2018-04-18 | 2018-08-10 | 陕西昆仑机械装备制造有限责任公司 | A kind of Horizontal honing machine clamping workpiece mechanism |
| CN111015590A (en) * | 2019-12-31 | 2020-04-17 | 深圳市中车业成实业有限公司 | Hydraulic damper rubber joint press mounting angle tool for railway vehicle |
| CN111745464A (en) * | 2020-06-28 | 2020-10-09 | 梁山普惠液压科技有限公司 | Tailstock side bus adjusting device and method |
| CN111922747A (en) * | 2020-08-11 | 2020-11-13 | 重庆第二机床厂有限责任公司 | Saddle double-sided boring frock clamp |
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| CN102069382A (en) * | 2010-08-18 | 2011-05-25 | 南洋汽摩集团瑞安木野精密机械有限公司 | Integrated grinding/turning mechanism of grinding lathe for ball valve bodies |
| CN102672413A (en) * | 2012-05-18 | 2012-09-19 | 宁波连通设备制造有限公司 | Device for processing spiral grooved tube |
| CN103217347A (en) * | 2013-04-17 | 2013-07-24 | 河南理工大学 | Ultrasonic vibration three-point bending test device suitable for observing crisp and hard material on line |
| CN103741134A (en) * | 2013-12-19 | 2014-04-23 | 辽宁金之运激光工程技术有限公司 | Production device of anticorrosive wear-resisting layer on cylinder block surface |
| CN204353842U (en) * | 2014-12-05 | 2015-05-27 | 重庆耀勇减震器有限公司 | Shock-absorber cylinder processing tool |
-
2014
- 2014-12-05 CN CN201410735952.8A patent/CN104440319B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DD277415A1 (en) * | 1988-11-29 | 1990-04-04 | Schwarze Pumpe Gas Veb | METHOD FOR CENTERING AND CLAMPING ROTATIONAL SYMMETRIC WORKSTUFF AND FOR CONNECTING A TORQUE |
| US7448304B2 (en) * | 2003-10-03 | 2008-11-11 | Tsugami Corporation | Lathe |
| CN201309177Y (en) * | 2008-12-12 | 2009-09-16 | 上海青霞机电科技有限公司 | Tool holder mounting structure for adhesive line marker |
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| CN103217347A (en) * | 2013-04-17 | 2013-07-24 | 河南理工大学 | Ultrasonic vibration three-point bending test device suitable for observing crisp and hard material on line |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694302A (en) * | 2017-02-28 | 2017-05-24 | 江苏冠达通电子科技有限公司 | Automatic adhesive-coating device |
| CN108381373A (en) * | 2018-04-18 | 2018-08-10 | 陕西昆仑机械装备制造有限责任公司 | A kind of Horizontal honing machine clamping workpiece mechanism |
| CN111015590A (en) * | 2019-12-31 | 2020-04-17 | 深圳市中车业成实业有限公司 | Hydraulic damper rubber joint press mounting angle tool for railway vehicle |
| CN111015590B (en) * | 2019-12-31 | 2024-01-02 | 深圳市业成实业有限公司 | Rubber joint press-fitting angle tool for oil pressure damper for railway vehicle |
| CN111745464A (en) * | 2020-06-28 | 2020-10-09 | 梁山普惠液压科技有限公司 | Tailstock side bus adjusting device and method |
| CN111745464B (en) * | 2020-06-28 | 2022-06-14 | 梁山普惠液压科技有限公司 | Tailstock side bus adjusting device and method |
| CN111922747A (en) * | 2020-08-11 | 2020-11-13 | 重庆第二机床厂有限责任公司 | Saddle double-sided boring frock clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104440319B (en) | 2017-03-22 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200922 Address after: No.2, aiting Town Farm, Aibei village committee, aiting Town, Linquan County, Fuyang City, Anhui Province Patentee after: Anhui kulinan Industrial Co.,Ltd. Address before: No. 76 401326 Jiulongpo District of Chongqing Jiulongpo District West Peng Aluminum City Avenue Patentee before: CHONGQING YAOYONG SHOCK ABSORBER Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20211205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |