CN108044370A - A kind of fixing device of workpiece - Google Patents
A kind of fixing device of workpiece Download PDFInfo
- Publication number
- CN108044370A CN108044370A CN201810031688.8A CN201810031688A CN108044370A CN 108044370 A CN108044370 A CN 108044370A CN 201810031688 A CN201810031688 A CN 201810031688A CN 108044370 A CN108044370 A CN 108044370A
- Authority
- CN
- China
- Prior art keywords
- voussoir
- hole
- boss
- tapered sleeve
- fixing device
- 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
- 238000003825 pressing Methods 0.000 claims abstract description 23
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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
-
- 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
-
- 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
Abstract
The invention belongs to tooling device technical fields, propose a kind of fixing device of workpiece, including pedestal, the boss for the hole being inserted on workpiece is provided on pedestal, threaded hole is provided at the top of boss, a voussoir is also inserted into hole, voussoir circumferentially on it is at least detachable be two block structures, the outer diameter of voussoir is consistent with the internal diameter of hole, up big and down small bellmouth is provided in voussoir, one tapered sleeve of insertion in bellmouth, a pressing plate is provided with above tapered sleeve, when one bolt is sequentially passed through in pressing plate and tapered sleeve screw-in threaded hole, the surrounding of voussoir compresses the inner wall of hole, it solves the special workpiece of existing shape and is difficult to the technical issues of fixed with clamping device.
Description
Technical field
The invention belongs to tooling device technical fields, are related to a kind of fixing device of workpiece.
Background technology
Some workpiece shapes of casting are more special, are difficult to fix in the manufacturing procedures such as further drilling, such as Fig. 7
Shown workpiece 13 is exactly more difficult fixed workpiece, is provided with hole 3, and hole 3 is square hole, is filled with existing clamp
It puts and is difficult to realize good fixation.
The content of the invention
The present invention proposes a kind of fixing device of workpiece, solves above-mentioned technical problem.
The technical proposal of the invention is realized in this way：
A kind of fixing device of workpiece, including：
Pedestal is provided with the boss for the hole being inserted on workpiece on the pedestal, is provided at the top of the boss
Threaded hole, is also inserted into a voussoir in described hole, the voussoir circumferentially on it is at least detachable be two block structures, the voussoir
Outer diameter is consistent with the internal diameter of described hole, and up big and down small bellmouth is provided in the voussoir, one is inserted into the bellmouth
Tapered sleeve is provided with a pressing plate above the tapered sleeve, and a bolt sequentially passes through the pressing plate and tapered sleeve is screwed in the threaded hole
When, the surrounding of the voussoir compresses the inner wall of described hole.
As further technical solution, the voussoir includes the voussoir one, voussoir two, the voussoir that are set gradually on circumferentially
3rd, voussoir four.
Be located at as further technical solution, in the voussoir below the bellmouth be disposed with round hole and
Inferior pyramidal hole, the inferior pyramidal hole are in up-small and down-big structure.
As further technical solution, the bellmouth runs through the voussoir.
As further technical solution, the voussoir is set on the boss.
As further technical solution, the pressing plate includes a U-shaped board, the U-shaped opening of the U-shaped board upward, and institute
It states the surrounding at the top of U-shaped board and is provided with first annular convex edge, the bolt hole that the bottom of the U-shaped board is provided through.
As further technical solution, the tapered sleeve includes the through hole of U-shaped board insertion, and the U-shaped board insertion is logical
Kong Zhonghou, the first annular convex edge is stuck in the top of the tapered sleeve, and the top of the tapered sleeve is positioned at described first annular convex
The surrounding on edge is provided with the second annular convex edge.
As further technical solution, the boss is from cylindrical boss and taper including setting gradually from top to bottom
Boss, and the cylindrical boss and the cone boss are inserted into respectively in the round hole and inferior pyramidal hole.
Compared with prior art, operation principle of the present invention and have the beneficial effect that：
1st, in the present invention, when fixing workpiece, the hole on workpiece is inserted on the boss of pedestal, then in hole interpolation
Enter voussoir, the outer diameter of voussoir is consistent with the internal diameter of hole, when hole for it is circular when voussoir circumference it is rounded, hole is side
During shape hole, the profile of voussoir is square, and just in insertion hole, bellmouth is provided in voussoir, and bellmouth is up big and down small
Taper, be inserted into tapered sleeve in bellmouth, tapered sleeve is equally up big and down small, and its outer diameter is slightly larger than the aperture of bellmouth, on tapered sleeve
Pressing plate is provided with, bolt is inserted into through pressing plate, tapered sleeve in the threaded hole of boss, by constantly screwing in bolt that pressing plate is downward
Pressure, and then is pressed downward tapered sleeve, and when tapered sleeve moves down in bellmouth, bellmouth is subject to the squeezing action power in circumferential direction, and because
It is split structure for voussoir, can at least splits into two block structures, therefore Split type wedge can disperse to circumferential explosion type, into
And the inner wall of hole is compressed, workpiece is made firmly to be fixed on pedestal, is conveniently operated, existing clamping device is solved and is not fixed easily
The technical issues of such workpiece.
2nd, in the present invention, voussoir is divided into voussoir one, voussoir two, voussoir three, four or four part-structure of voussoir, voussoir one, voussoir
2nd, voussoir three, voussoir four merge back wall into the structure of voussoir entirety, and the structure of four split voussoirs is compacted voussoir scattered
When be more uniformly stressed, and then compress the active force of the inner wall of hole also more uniformly, it is more preferable to compress effect, and then fixed effect
More preferably；Bellmouth, which can run through below voussoir or bellmouth, is disposed with round hole and inferior pyramidal hole, and bellmouth is under
Bellmouth is in upper and lower symmetrical structure, and after tapered sleeve is inserted into bellmouth, squeezing effect is more preferable.
3rd, the present invention in, voussoir is set in by bellmouth on boss, make connection more stablize, boss from including from up to
Under the cylindrical boss and cone boss that set gradually, be inserted into just in round hole and inferior pyramidal hole, increase connective stability；Cone
Set is external tapered, is internally provided with through hole, in the U-shaped board insertion through hole in pressing plate, surrounding at the top of U-shaped board it is first annular
Convex edge is stuck in the top of tapered sleeve, and surrounding is wrapped up by the second annular convex edge, in bolt passing through bolt hole, through hole insertion threaded hole,
By pressing plate into when being about to tapered sleeve and compressing downwards, pressing plate and tapered sleeve will not generate relative displacement, be more prone to exert a force.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is schematic structural view of the invention；
Fig. 2 is voussoir overlooking the structure diagram in the present invention；
Fig. 3 is C-C cross-sectional views in the present invention；
Fig. 4 is understructure schematic diagram in the present invention；
Fig. 5 is center platen structure diagram of the present invention；
Fig. 6 is tapered sleeve structure diagram in the present invention；
Fig. 7 is voussoir mounting structure schematic diagram in the present invention；
In figure：1- pedestals, 2- boss, 21- cylindrical bosses, 22- cone bosses, 3- holes, 4- threaded holes, 5- voussoirs,
51- voussoirs one, 52- voussoirs two, 53- voussoirs three, 54- voussoirs four, 6- bellmouths, 8- tapered sleeves, 81- through holes, the second convex annulars of 82-
Edge, 9- pressing plates, 91-U templates, the first annular convex edges of 92-, 93- bolts hole, 10- bolts, 11- round holes, 12- inferior pyramidals hole,
13- workpiece.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment belongs to the scope of protection of the invention.
As shown in Fig. 1~Fig. 7, the present invention proposes a kind of fixing device of workpiece, including：
Pedestal 1 is provided with the boss 2 of the hole being inserted on workpiece 3 on pedestal 1, and the top of boss 2 is provided with screw thread
Hole 4, is also inserted into a voussoir 5 in hole 3, voussoir 5 circumferentially on it is at least detachable be two block structures, outer diameter and the hole 3 of voussoir 5
Internal diameter it is consistent, be provided with up big and down small bellmouth 6 in voussoir 5, one tapered sleeve 8 of insertion in bellmouth 6, the top of tapered sleeve 8 is set
A pressing plate 9 is equipped with, when a bolt 10 is sequentially passed through in pressing plate 9 and the screw-in threaded hole 4 of tapered sleeve 8, the surrounding of voussoir 5 compresses hole 3
Inner wall.
In the present embodiment, when fixing workpiece 13, the hole 3 on workpiece 13 is inserted on the boss 2 of pedestal 1, Ran Hou
Insertion voussoir 5 in hole 3, the outer diameter of voussoir 5 is consistent with the internal diameter of hole 3, when hole 3 for circle when voussoir 5 circumference
Rounded, when hole 3 is square hole, the profile of voussoir 5 is square, and is provided with taper in voussoir 5 in insertion hole 3 just
Hole 6, bellmouth 6 are up big and down small taper, are inserted into tapered sleeve 8 in bellmouth 6, tapered sleeve 8 is equally up big and down small, and its outer diameter is slightly
More than the aperture of bellmouth, pressing plate 9 is provided on tapered sleeve 8, bolt 10 is inserted into the threaded hole 4 of boss 2 through pressing plate 9, tapered sleeve 8
In, pressing plate 9 is pressed downward by constantly screwing in bolt 10, and then tapered sleeve 8 is pressed downward, tapered sleeve 8 moves down in bellmouth 6
When, bellmouth 6 is subject to the squeezing action power in circumferential direction, and because voussoir 5 is split structure, can at least split into two agllutinations
Structure, therefore Split type wedge 5 can disperse to circumferential explosion type, and then the inner wall of hole 3 is compressed, workpiece is made firmly to be fixed on bottom
On seat 1, it is conveniently operated, solves the technical issues of existing clamping device is not fixed easily such workpiece.
Further, voussoir 5 includes the voussoir 1, voussoir 2 52, voussoir 3 53, the voussoir four that are set gradually on circumferentially
54。
In the present embodiment, voussoir 5 divides for voussoir 1, voussoir 2 52, voussoir 3 53,4 54 4 part-structure of voussoir, wedge
Block 1, voussoir 2 52, voussoir 3 53, voussoir 4 54 merge back wall into the whole structure of voussoir 5, the knot of four split voussoirs
Structure is more uniformly stressed when voussoir 5 being made to be compacted scattered, and then the active force for compressing the inner wall of hole 3 is also more uniform, compresses
Effect is more preferable, and then fixed effect is more preferable.
Further, the lower section in voussoir 5 positioned at bellmouth 6 is disposed with round hole 11 and inferior pyramidal hole 12, inferior pyramidal
Hole 12 is in up-small and down-big structure.
Further, bellmouth 6 runs through voussoir 5.
In the present embodiment, bellmouth 6 can run through voussoir 5 or the lower section of bellmouth 6 is disposed with 11 He of round hole
Inferior pyramidal hole 12, bellmouth 6 and inferior pyramidal hole 12 are in upper and lower symmetrical structure, after tapered sleeve 8 is inserted into bellmouth 6, squeezing effect
More preferably.
Further, voussoir 5 is set on boss 2.
Further, pressing plate 9 includes a U-shaped board 91, and upward, and the surrounding at the top of U-shaped board 91 is set the U-shaped opening of U-shaped board 91
It is equipped with first annular convex edge 92, the bolt hole 93 that the bottom of U-shaped board 91 is provided through.
In the present embodiment, voussoir 5 is set in by bellmouth 6 on boss 2, make connection more stablize, boss 2 from including from
The cylindrical boss 21 and cone boss 22 set gradually under is inserted into round hole 11 and inferior pyramidal hole 12 just, is increased
Connective stability.
Further, tapered sleeve 8 includes the through hole 81 that U-shaped board 91 is inserted into, first annular convex after U-shaped board 91 is inserted into through hole 81
The top for being stuck in tapered sleeve 8 along 92, and the top of tapered sleeve 8 is located at the surrounding of first annular convex edge 92 and is provided with the second annular convex edge
82。
Further, boss 2 is from cylindrical boss 21 and cone boss 22 including setting gradually from top to bottom, and cylinder
Shape boss 21 and cone boss 22 are inserted into respectively in round hole 11 and inferior pyramidal hole 12.
In the present embodiment, the outside of tapered sleeve 8 is tapered, is internally provided with through hole 81, and the U-shaped board 91 in pressing plate 9 is inserted into through hole
In 81, the first annular convex edge 92 of the surrounding at 91 top of U-shaped board is stuck in the top of tapered sleeve 8, and surrounding is by the second annular convex edge 82
Package, bolt 10 through bolt hole 93, through hole 81 be inserted into threaded hole 4 in, by pressing plate 9 into be about to tapered sleeve 8 downwards compress when, pressure
Plate 9 and tapered sleeve 8 will not generate relative displacement, be more prone to exert a force.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.
Claims (8)
1. a kind of fixing device of workpiece, which is characterized in that including pedestal (1), be provided with to be inserted into work on the pedestal (1)
The boss (2) of hole (3) on part is provided with threaded hole (4) at the top of the boss (2), one is also inserted into described hole (3)
Voussoir (5), the voussoir (5) circumferentially on it is at least detachable be two block structures, the outer diameter and described hole of the voussoir (5)
(3) internal diameter is consistent, and up big and down small bellmouth (6) is provided in the voussoir (5), a cone is inserted into the bellmouth (6)
It covers (8), is provided with a pressing plate (9) above the tapered sleeve (8), a bolt (10) sequentially passes through the pressing plate (9) and tapered sleeve (8)
Screw in the threaded hole (4) it is interior when, the surrounding of the voussoir (5) compresses the inner wall of described hole (3).
2. the fixing device of a kind of workpiece according to claim 1, which is characterized in that the voussoir (5) is included circumferentially
On the voussoir one (51), voussoir two (52), voussoir three (53), the voussoir four (54) that set gradually.
3. the fixing device of a kind of workpiece according to claim 1, which is characterized in that be located in the voussoir (5) described
Round hole (11) and inferior pyramidal hole (12) are disposed with below bellmouth (6), the inferior pyramidal hole (12) is in up-small and down-big
Structure.
4. the fixing device of a kind of workpiece according to claim 1, which is characterized in that the bellmouth (6) is through described
Voussoir (5).
5. the fixing device of a kind of workpiece according to claim 1, which is characterized in that the voussoir (5) is set in described
On boss (2).
6. the fixing device of a kind of workpiece according to claim 1, which is characterized in that the pressing plate (9) includes a U-shaped board
(91), upward, and the surrounding at the top of the U-shaped board (91) is provided with first annular convex edge to the U-shaped opening of the U-shaped board (91)
(92), the bolt hole (93) that the bottom of the U-shaped board (91) is provided through.
7. the fixing device of a kind of workpiece according to claim 6, which is characterized in that the tapered sleeve (8) includes described U-shaped
The through hole (81) of plate (91) insertion, after the U-shaped board (91) is inserted into through hole (81), the first annular convex edge (92) is stuck in institute
State the top of tapered sleeve (8), and the top of the tapered sleeve (8) is located at the surrounding of the first annular convex edge (92) and is provided with the second ring
Shape convex edge (82).
8. the fixing device of a kind of workpiece according to claim 3, which is characterized in that the boss (2) is from including from upper
The cylindrical boss (21) and cone boss (22) set gradually under, and the cylindrical boss (21) and the taper are convex
Platform (22) is inserted into respectively in the round hole (11) and inferior pyramidal hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810031688.8A CN108044370B (en) | 2018-01-12 | 2018-01-12 | Workpiece fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810031688.8A CN108044370B (en) | 2018-01-12 | 2018-01-12 | Workpiece fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108044370A true CN108044370A (en) | 2018-05-18 |
| CN108044370B CN108044370B (en) | 2024-04-05 |
Family
ID=62127279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810031688.8A Active CN108044370B (en) | 2018-01-12 | 2018-01-12 | Workpiece fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108044370B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658721A (en) * | 2020-12-15 | 2021-04-16 | 河北北方铸业有限公司 | Hubei province type pivot body fixes a position frock fast |
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|---|---|---|---|---|
| JP2005059182A (en) * | 2003-08-19 | 2005-03-10 | Honda Motor Co Ltd | Holding jig for grinding outer surface of cylindrical work |
| CN101659013A (en) * | 2009-09-07 | 2010-03-03 | 奇瑞汽车股份有限公司 | Automatic spreading and linking clamping mechanism |
| CN202639879U (en) * | 2012-04-27 | 2013-01-02 | 东风(十堰)楚凯汽车零件有限公司 | Extrusion tensioning clamp |
| CN202964186U (en) * | 2012-11-26 | 2013-06-05 | 无锡市航鹄科技有限公司 | Drilling locating clamp |
| CN203266144U (en) * | 2013-04-10 | 2013-11-06 | 江苏爱吉斯海珠机械有限公司 | Hydraulic clamping clamp for process of milling supporting shoulder excircle with cylinder sleeve |
| CN103737372A (en) * | 2014-01-02 | 2014-04-23 | 无锡倍安杰机械科技有限公司 | Expansion sleeve linkage compression mechanism |
| CN104384989A (en) * | 2014-11-18 | 2015-03-04 | 江苏汤臣汽车零部件有限公司 | Bevel gear shell positioning hole and mounting hole machining tool |
| CN205927171U (en) * | 2016-08-23 | 2017-02-08 | 济宁科尔森液压有限公司 | Tight dabber expands |
| CN206029359U (en) * | 2016-08-31 | 2017-03-22 | 广州创芯旗自动化控制设备有限公司 | Wolfram steel anchor clamps |
| CN207807152U (en) * | 2018-01-12 | 2018-09-04 | 河北北方铸业有限公司 | A kind of fixing device of workpiece |
-
2018
- 2018-01-12 CN CN201810031688.8A patent/CN108044370B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005059182A (en) * | 2003-08-19 | 2005-03-10 | Honda Motor Co Ltd | Holding jig for grinding outer surface of cylindrical work |
| CN101659013A (en) * | 2009-09-07 | 2010-03-03 | 奇瑞汽车股份有限公司 | Automatic spreading and linking clamping mechanism |
| CN202639879U (en) * | 2012-04-27 | 2013-01-02 | 东风(十堰)楚凯汽车零件有限公司 | Extrusion tensioning clamp |
| CN202964186U (en) * | 2012-11-26 | 2013-06-05 | 无锡市航鹄科技有限公司 | Drilling locating clamp |
| CN203266144U (en) * | 2013-04-10 | 2013-11-06 | 江苏爱吉斯海珠机械有限公司 | Hydraulic clamping clamp for process of milling supporting shoulder excircle with cylinder sleeve |
| CN103737372A (en) * | 2014-01-02 | 2014-04-23 | 无锡倍安杰机械科技有限公司 | Expansion sleeve linkage compression mechanism |
| CN104384989A (en) * | 2014-11-18 | 2015-03-04 | 江苏汤臣汽车零部件有限公司 | Bevel gear shell positioning hole and mounting hole machining tool |
| CN205927171U (en) * | 2016-08-23 | 2017-02-08 | 济宁科尔森液压有限公司 | Tight dabber expands |
| CN206029359U (en) * | 2016-08-31 | 2017-03-22 | 广州创芯旗自动化控制设备有限公司 | Wolfram steel anchor clamps |
| CN207807152U (en) * | 2018-01-12 | 2018-09-04 | 河北北方铸业有限公司 | A kind of fixing device of workpiece |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658721A (en) * | 2020-12-15 | 2021-04-16 | 河北北方铸业有限公司 | Hubei province type pivot body fixes a position frock fast |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108044370B (en) | 2024-04-05 |
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