CN109352369B - Arc-shaped part machining clamp - Google Patents
Arc-shaped part machining clamp Download PDFInfo
- Publication number
- CN109352369B CN109352369B CN201811244520.1A CN201811244520A CN109352369B CN 109352369 B CN109352369 B CN 109352369B CN 201811244520 A CN201811244520 A CN 201811244520A CN 109352369 B CN109352369 B CN 109352369B
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- arc
- block
- base
- pressing
- screw
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- 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
- B23Q3/061—Work-clamping means adapted for holding a plurality of workpieces
-
- 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 discloses an arc-shaped part machining clamp, and belongs to the field of machining. When a plurality of arc-shaped pieces are processed, the arc-shaped pieces are installed on the clamping assemblies in a one-to-one correspondence mode. When installing every arc, one side that makes the arc can offset with the locating piece, the one end that the arc is close to the base then is supported by holding screw, adjust the telescopic unit, steerable compact heap slides on the supporting shoe, the one end that makes the compact heap be close to the locating piece offsets with the opposite side of arc, holding screw, the compact heap is tight with the arc clamp with the locating piece, and then the rigidity that makes the relative base of arc, the position of a plurality of arcs is all fixed, can process the one end that the base was kept away from to the arc simultaneously, this kind of processing method can improve the machining efficiency of arc and guarantee that a plurality of arcs are unanimous with the cooperation precision of other work pieces when using.
Description
Technical Field
The invention relates to the field of machining, in particular to an arc-shaped part machining clamp.
Background
The gas turbine casing has many parts, and one of the annular parts comprises a plurality of identical arc-shaped parts. When this annular part used, a plurality of arc pieces mutually supported and constitute annular structure and the distance between each arc piece is equal.
This kind of annular part need process alone every arc spare when processing man-hour, and machining efficiency is lower, and is difficult to guarantee the cooperation required precision between a plurality of arc spares and other work pieces.
Disclosure of Invention
The embodiment of the invention provides an arc-shaped part machining clamp, which solves the problems that an annular part formed by a plurality of arc-shaped parts is low in machining efficiency and the matching precision is difficult to meet. The technical scheme is as follows:
the embodiment of the invention provides an arc-shaped piece machining clamp which comprises a base and a plurality of clamping components, wherein the clamping components are arranged on the base at equal intervals along the circumferential direction of the circumference,
each clamping component comprises a positioning block, a supporting screw and a pressing structure, the positioning block and the supporting screw are arranged on the base at intervals,
the pressing structure comprises supporting blocks, pressing blocks and telescopic units, the supporting blocks and the supporting screws are arranged on the base at intervals, the pressing blocks are connected to the supporting blocks in a sliding mode, and the telescopic units are used for controlling the pressing blocks to move in the radial direction of the circumference.
Optionally, the telescopic unit comprises a connecting plate and a telescopic screw, the connecting plate is fixed on the supporting block, a threaded hole is formed in the connecting plate, the telescopic screw is inserted into the threaded hole, one end of the telescopic screw abuts against the pressing block, and the axis of the telescopic screw coincides with one diameter of the circumference.
Optionally, one end of the compression block, which is close to the telescopic screw, is provided with a guide groove, and one end of the telescopic screw is inserted into the guide groove.
Optionally, a limit groove is formed in the supporting block, the limit groove extends to the other end of the supporting block along one end of the supporting block, and the length direction of the limit groove is parallel to the axis of the telescopic screw.
Optionally, the pressing block comprises a pressing end and a connecting end, the pressing end is detachably connected with the connecting end, and the connecting end is connected with the supporting block.
Optionally, the clamping assembly further comprises a limiting cover plate, the limiting cover plate is fixed on the supporting block, and the connecting end is located between the limiting groove and the cover plate.
Optionally, the supporting block is arranged on one side of the positioning block close to the circle center of the circumference.
Optionally, the clamping assembly further comprises a positioning pin, the positioning pin and the positioning block are arranged on the base at intervals, and the positioning pin is used for further limiting the arc-shaped part.
Optionally, the positioning block has a symmetrical structure, and a symmetry axis of the positioning block coincides with a diameter of the circumference.
Optionally, the positioning block and the base are positioned by two pins, and the two pins are symmetrically arranged on two sides of a symmetry axis of the positioning block.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: when a plurality of arc-shaped pieces are processed, the arc-shaped pieces are installed on the clamping assemblies in a one-to-one correspondence mode. When installing every arc, one side that makes the arc can offset with the locating piece, the one end that the arc is close to the base then is supported by holding screw, adjust the telescopic unit, steerable compact heap slides on the supporting shoe, the one end that makes the compact heap be close to the locating piece offsets with the opposite side of arc, holding screw, the compact heap is tight with the arc clamp with the locating piece, and then the rigidity that makes the relative base of arc, the position of a plurality of arcs is all fixed, can process the one end that the base was kept away from to the arc simultaneously, this kind of processing method can improve the machining efficiency of arc and guarantee that a plurality of arcs are unanimous with the cooperation precision of other work pieces when using.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below,
FIG. 1 is a side view of an arcuate member provided by an embodiment of the present invention;
FIG. 2 is a top view of an arcuate member provided by an embodiment of the present invention;
fig. 3 is a schematic view of a using state of an arc-shaped piece processing clamp provided by the embodiment of the invention;
FIG. 4 is a schematic structural diagram of a clamping assembly according to an embodiment of the present invention;
FIG. 5 is a top view of a clamping assembly provided by an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a compression end according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a connection end provided by an embodiment of the present invention;
FIG. 8 is a schematic view of a support block according to an embodiment of the present invention;
FIG. 9 is a top view of a support block provided by an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a connecting plate according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a positioning block according to an embodiment of the present invention;
FIG. 12 is a side view of a locating block provided in accordance with an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a support screw according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
To facilitate understanding of the present invention, a specific structure of an arc-shaped member provided by an embodiment of the present invention is explained herein, fig. 1 is a side view of the arc-shaped member provided by the embodiment of the present invention, fig. 2 is a top view of the arc-shaped member provided by the embodiment of the present invention, and with reference to fig. 1 and fig. 2, an arc-shaped member groove 101 is provided on an outer side of the arc-shaped member 10, an inner wall is an arc-shaped surface, the arc-shaped member 10 is a symmetrical structure, and the arc-shaped member 10 has a symmetrical surface 10 a.
Fig. 3 is a schematic view of a using state of an arc-shaped piece processing fixture according to an embodiment of the present invention, and as shown in fig. 3, the arc-shaped piece processing fixture includes a base 1 and a plurality of clamping assemblies 2, and the plurality of clamping assemblies 2 are arranged on the base 1 at equal intervals along a circumferential direction of a circumference 1 a.
Fig. 4 is a schematic structural diagram of a clamping assembly according to an embodiment of the present invention, and referring to fig. 3 and 4, each clamping assembly 2 includes a positioning block 21, a supporting screw 22, and a pressing structure 23, and the positioning block 21 and the supporting screw 22 are disposed on the base 1 at an interval.
The pressing structure 23 includes a supporting block 231, a pressing block 232 and a telescopic unit 233, the supporting block 231 and the supporting screw 22 are disposed on the base 1 at intervals, the pressing block 232 is slidably connected to the supporting block 231, and the telescopic unit 233 is used for controlling the pressing block 232 to move in the radial direction of the circumference 1 a.
When the arc-shaped pieces 10 are processed, the arc-shaped pieces 10 are correspondingly arranged on the clamping assemblies 2 one by one. When installing every arc 10, make one side of arc 10 can offset with locating piece 21, the one end that arc 10 is close to base 1 then is supported by supporting screw 22, adjust flexible unit 233, steerable compact heap 232 slides on supporting shoe 231, make compact heap 232 be close to the one end of locating piece 21 and offset with the opposite side of arc 10, supporting screw 22, locating piece 21 presss from both sides arc 10 with compact heap 232, thereby make the fixed position of arc 10 relative base 1, the position of a plurality of arcs 10 is all fixed, can process the one end that base 1 was kept away from to arc 10 simultaneously, the machining efficiency of arc 10 can be improved and the cooperation precision of guaranteeing a plurality of arcs 10 when using is unanimous with other work pieces to this kind of machining method.
It should be noted that, the size of the circumference 1a on the base 1 can be determined according to the size of the diameter of the circle corresponding to the outer wall and the inner wall of the arc-shaped part 10, so that the arc-shaped part 10 can be better fixed on the base 1, which is beneficial to ensuring the stable processing of the arc-shaped part 10.
As shown in fig. 3, the supporting block 231 may be disposed at a side of the positioning block 21 near the center of the circle 1 a. This arrangement reduces the overall space required for the clamping assembly 2.
As shown in fig. 3, the number of the clamping assemblies 2 may be 6, and at this time, the arc-shaped member 10 with better quality can be processed, but in other embodiments of the present invention, the number of the clamping assemblies 2 may also be 4, 8, or 5, which is not limited by the present invention.
Alternatively, the base 1 may be cylindrical, which facilitates manufacturing and processing of the arc 10.
As shown in fig. 4, the telescopic unit 233 may include a connecting plate 233a and a telescopic screw 233b, the connecting plate 233a is fixed to the supporting block 231, a threaded hole is formed in the connecting plate 233a, the telescopic screw 233b is inserted into the threaded hole, one end of the telescopic screw 233b abuts against the pressing block 232, and an axis of the telescopic screw 233b coincides with a diameter of the circumference 1 a. In practical use, the telescopic screw 233b is controlled to rotate relative to the connecting plate 233a, so that the telescopic screw 233b can displace in the radial direction of the circumference 1a, and the telescopic screw 233b pushes the pressing block 232 to displace in the radial direction of the circumference 1a, so that the arc-shaped member 10 can be pressed on the positioning block 21 through the pressing block 232. This structure can achieve the function of pressing the arc 10 against the positioning block 21 with a relatively simple structure.
As shown in fig. 4, a locknut 233c may be disposed between the connection plate 233a and the other end of the telescopic screw 233b to ensure the stability of the telescopic screw 233b in use.
In an implementation manner provided by the embodiment of the present invention, when the arc-shaped member 10 needs to be removed from the clamping assembly 2, the telescopic screw 233b may be rotated to separate the telescopic screw from the pressing block 232, so that the pressing block 232 moves toward the center of the circle 1a, and the arc-shaped member 10 is taken out from the clamping assembly 2.
Fig. 5 is a top view of the clamping assembly according to an embodiment of the present invention, and in conjunction with fig. 4 and fig. 5, one end of the pressing block 232 close to the telescopic screw 233b may be provided with a guide slot 232a, and one end of the telescopic screw 233b is inserted into the guide slot 232 a. So as to facilitate the installation of the telescopic screw 233b with the compression block 232 and also reduce the displacement of the telescopic screw 233b in the direction perpendicular to the axis thereof.
As shown in fig. 5, the pressing block 232 may further include a limiting hole 232b, the limiting hole 232b extends from one surface of the pressing block 232 close to the base 1 to another surface of the pressing block 232 far from the base 1, the guide groove 232a extends from one end of the pressing block 232 to the limiting hole 232b, a projection of the limiting hole 232b on the base 1 is kidney-shaped, a length direction of the limiting hole 232b is perpendicular to an axial direction of the telescopic screw 233b, an external thread 233d may be disposed at one end of the telescopic screw 233b close to the pressing block 232, the external thread 233d is located in the limiting hole 232b, a diameter of the external thread 233d is smaller than a distance between two farthest points on an inner wall of the limiting hole 232b, and a diameter of the external thread 233d is larger than a width of the guide groove 232 a. This kind of setting can be convenient for the installation and the dismantlement of arc 10 on clamping subassembly 2, when needs dismantle arc 10, can directly rotate telescopic screw 233b, and the external screw thread 233d on telescopic screw 233b can remove along with telescopic screw 233b, and the external screw thread 233d of card in spacing hole 232b can directly drive compact heap 232 and remove. As shown in fig. 5, the clamping assembly 2 may further include a positioning pin 24, and the positioning pin 24 and the positioning block 21 are disposed on the base 1 at an interval. In practical use, the positioning pin 24 is located on one side of the symmetric surface 10a of the arc-shaped part 10, so that the arc-shaped part 10 can be further limited, and the processing precision of the arc-shaped part 10 is ensured.
As shown in fig. 4, the compressing block 232 may include a compressing end 2321 and a connecting end 2322, the compressing end 2321 is detachably connected to the connecting end 2322, and the connecting end 2322 is connected to the supporting block 231. The structure is more convenient for the disassembly and the assembly of the clamping component 2.
Fig. 6 is a schematic structural diagram of a pressing end provided in an embodiment of the present invention, fig. 7 is a schematic structural diagram of a connecting end provided in an embodiment of the present invention, and with reference to fig. 4, fig. 6, and fig. 7, a length direction of the pressing end 2321 is perpendicular to an axis of the telescopic screw 233b, the connecting end 2322 is provided with an installation groove 2322a matched with the pressing end 2321, and the pressing end 2321 and the connecting end 2322 can be connected by a pin.
Fig. 8 is a schematic structural diagram of a support block according to an embodiment of the present invention, and fig. 9 is a top view of the support block according to the embodiment of the present invention, and in combination with fig. 8 and 9, a limit groove 231a is disposed on the support block 231, the limit groove 231a extends to the other end of the support block 231 along one end of the support block 231, and the length direction of the limit groove 231a is parallel to the axis of the telescopic screw 233 b. The setting of spacing groove 231a can avoid the link 2322 of compact heap 232 to produce the displacement on the axis of perpendicular expansion screw 233b, guarantees that compact heap 232 effectively compresses tightly arc 10.
The supporting block 231 and the base 1 can be connected by screws, and the screws are countersunk screws. This structure takes up less space.
With reference to fig. 4 and 9, the clamping assembly 2 may further include a limiting cover 234, the limiting cover 234 is fixed on the supporting block 231, and the connecting end 2322 is located between the limiting groove 231a and the cover. The limiting cover plate 234 can limit the connecting end 2322 of the pressing block 232, so that the pressing block 232 is prevented from vibrating and displacing in the direction perpendicular to the surface of the base 1, and the machining precision of the arc-shaped part 10 is guaranteed.
Fig. 10 is a schematic structural diagram of a connecting plate according to an embodiment of the present invention, and referring to fig. 4 and 10, a groove a is provided on a surface of the connecting plate 233a close to the pressing block 232, where the groove a is provided to facilitate the installation of the pressing block 232 and the telescopic screw 233b, and provide a certain retraction space for the pressing block 232.
Fig. 11 is a schematic structural diagram of a positioning block according to an embodiment of the present invention, and fig. 12 is a side view of the positioning block according to an embodiment of the present invention, as shown in fig. 11, the positioning block 21 has a symmetrical structure, and a symmetry axis 21a of the positioning block 21 coincides with a diameter of the circumference 1 a. The positioning block 21 is arranged in a symmetrical structure, so that the positioning block 21 can conveniently position and clamp the arc-shaped part 10 with the symmetrical structure, and the processing precision of the arc-shaped part 10 is improved.
With reference to fig. 4 and 12, the positioning block 21 includes a positioning block main body 211 and a protrusion 212, the protrusion 212 is disposed on the positioning block main body 211, the protrusion 212 can be matched with the arc-shaped groove 101 on the arc-shaped piece 10, and when the arc-shaped piece 10 is mounted on the positioning block 21, the protrusion 212 is inserted into the arc-shaped groove 101, so as to facilitate positioning and clamping of the arc-shaped piece 10.
Referring to fig. 5 and 11, the positioning block 21 and the base 1 are positioned by two pins 26, and the two pins 26 are symmetrically disposed on two sides of the symmetry axis 21a of the positioning block 21. The two pins 26 which are symmetrically arranged can improve the installation precision of the positioning block 21 and ensure the processing precision of the arc-shaped piece 10.
Fig. 13 is a schematic structural diagram of a supporting screw according to an embodiment of the present invention, and as shown in fig. 12, a through hole 221 perpendicular to an axis of the supporting screw 22 may be provided on the supporting screw 22, and when a position of the supporting screw 22 needs to be adjusted, a tool may be inserted into the through hole 221 to control rotation of the supporting screw 22, so as to improve efficiency of mounting and clamping the arc-shaped member 10.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The arc-shaped piece machining clamp is characterized by comprising a base (1) and a plurality of clamping components (2), wherein the plurality of clamping components (2) are arranged on the base (1) at equal intervals along the circumferential direction of a circumference (1 a),
each clamping component (2) comprises a positioning block (21), a supporting screw (22) and a pressing structure (23), the positioning block (21) and the supporting screw (22) are arranged on the base (1) at intervals,
the pressing structure (23) comprises a supporting block (231), a pressing block (232) and a telescopic unit (233), the supporting block (231) and the supporting screw (22) are arranged on the base (1) at intervals, the pressing block (232) is connected to the supporting block (231) in a sliding manner, the telescopic unit (233) is used for controlling the pressing block (232) to move in the radial direction of the circumference (1 a),
the telescopic unit (233) comprises a connecting plate (233 a) and a telescopic screw (233 b), the connecting plate (233 a) is fixed on the supporting block (231), a threaded hole is formed in the connecting plate (233 a), the telescopic screw (233 b) is inserted into the threaded hole, one end of the telescopic screw (233 b) abuts against the pressing block (232), the axis of the telescopic screw (233 b) is overlapped with one diameter of the circumference (1 a), a groove (A) is formed in the surface of the connecting plate (233 a) close to the pressing block (232), and a locknut (c) is arranged between the connecting plate (233 a) and the other end of the telescopic screw (233 b),
one end, close to the telescopic screw (233 b), of the compression block (232) is provided with a guide groove (232 a) and a limiting hole (232 b), one end of the telescopic screw (233 b) is inserted into the guide groove (232 a), one surface, close to the base (1), of the compression block (232) extends to the other surface, far away from the base (1), of the compression block (232) in the limiting hole (232 b), the projection of the limiting hole (232 b) on the base (1) is waist-shaped, the length direction of the limiting hole (232 b) is perpendicular to the axial direction of the telescopic screw (233 b), one end, close to the compression block (232), of the telescopic screw (233 b) is provided with an external thread (233 d), and the external thread (233 d) is located in the limiting hole (232 b), the diameter of the external thread (233 d) is smaller than the distance between two points on the inner wall of the limiting hole (232 b) which are farthest away, and the diameter of the external thread (233 d) is larger than the width of the guide groove (232 a).
2. The arc-shaped piece machining clamp according to claim 1, wherein a limiting groove (231 a) is formed in the supporting block (231), the limiting groove (231 a) extends to the other end of the supporting block (231) along one end of the supporting block (231), and the length direction of the limiting groove (231 a) is parallel to the axis of the telescopic screw (233 b).
3. The arc piece processing clamp according to claim 2, wherein the pressing block (232) comprises a pressing end (2321) and a connecting end (2322), the pressing end (2321) is detachably connected with the connecting end (2322), and the connecting end (2322) is connected with the supporting block (231).
4. The arc piece processing clamp according to claim 3, wherein the clamping assembly (2) further comprises a limiting cover plate (234), the limiting cover plate (234) is fixed on the supporting block (231), and the connecting end (2322) is located between the limiting groove (231 a) and the limiting cover plate.
5. The arc member machining jig according to claim 1, wherein the support block (231) is provided on a side of the positioning block (21) near a center of the circle (1 a).
6. The arc-shaped piece machining clamp according to claim 1, wherein the clamping assembly (2) further comprises a positioning pin (24), the positioning pin (24) and the positioning block (21) are arranged on the base (1) at intervals, and the positioning pin (24) is used for further limiting the arc-shaped piece.
7. The arc machining fixture according to claim 1, characterized in that the positioning block (21) is of a symmetrical structure, and a symmetry axis (21 a) of the positioning block (21) coincides with a diameter of the circumference (1 a).
8. The arc-shaped piece machining clamp according to claim 7, characterized in that the positioning block (21) and the base (1) are positioned by two pins (26), and the two pins (26) are symmetrically arranged on two sides of a symmetry axis (21 a) of the positioning block (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811244520.1A CN109352369B (en) | 2018-10-24 | 2018-10-24 | Arc-shaped part machining clamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811244520.1A CN109352369B (en) | 2018-10-24 | 2018-10-24 | Arc-shaped part machining clamp |
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| CN109352369A CN109352369A (en) | 2019-02-19 |
| CN109352369B true CN109352369B (en) | 2020-07-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110605660B (en) * | 2019-07-31 | 2020-12-08 | 武汉船用机械有限责任公司 | Clamping device and clamping method for grinding thin-walled workpiece |
| CN113399720B (en) * | 2021-07-01 | 2022-04-05 | 中国航发贵州黎阳航空动力有限公司 | Outer casing honeycomb ring arc block milling clamp and method |
| CN113560634B (en) * | 2021-07-21 | 2022-10-18 | 中国航发航空科技股份有限公司 | Device for machining combined hole of reverse thrust component of aero-engine |
| CN113618265B (en) * | 2021-08-18 | 2023-03-17 | 中国航发沈阳黎明航空发动机有限责任公司 | Clamping mechanism for longitudinal welding of thin-wall parts and using method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101954604B (en) * | 2010-07-30 | 2013-07-03 | 东方电气集团东方汽轮机有限公司 | Annular thin-wall article clamping device and using method thereof |
| CN202192460U (en) * | 2011-08-18 | 2012-04-18 | 哈尔滨建成集团有限公司 | Special fixture for machining parts with inner arc |
| CN202292174U (en) * | 2011-09-09 | 2012-07-04 | 索特传动设备有限公司 | Clamping and centering device of ring-shaped workpieces |
| CN102689136A (en) * | 2012-04-11 | 2012-09-26 | 安徽江南机械有限责任公司 | Processing method for hinge section steel element of car door |
| CN202607289U (en) * | 2012-05-18 | 2012-12-19 | 国家核电技术有限公司 | Clamping system for clamping annular workpiece |
| CN206356930U (en) * | 2016-12-01 | 2017-07-28 | 扬州市舜意机械有限公司 | A kind of backing plate recessing frock |
| CN206717458U (en) * | 2017-03-27 | 2017-12-08 | 四川大金不锈钢有限公司 | A kind of engine is counter to push away fixture |
| CN107009165B (en) * | 2017-04-06 | 2018-11-27 | 武汉船用机械有限责任公司 | Radome fairing clamping tooling |
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