CN108817435B - Brake shoe jig for turning and milling composite machine tool - Google Patents
Brake shoe jig for turning and milling composite machine tool Download PDFInfo
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- CN108817435B CN108817435B CN201810964628.1A CN201810964628A CN108817435B CN 108817435 B CN108817435 B CN 108817435B CN 201810964628 A CN201810964628 A CN 201810964628A CN 108817435 B CN108817435 B CN 108817435B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/113—Retention by bayonet connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/107—Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to the field of automobile part processing, in particular to a brake shoe jig for a turn-milling composite machine tool, which comprises a first clamping piece, a second clamping piece, a third clamping piece and an upper pressing plate, wherein the first clamping piece, the second clamping piece and the third clamping piece are arranged on a three-jaw chuck of the machine tool, the first clamping piece, the second clamping piece and the third clamping piece are arranged on three clamping jaws of the three-jaw chuck through bolts, the upper pressing plate is arranged on the first clamping piece and the second clamping piece through bolts and clamps a workpiece between the first clamping piece, the second clamping piece and the upper pressing plate, the lower surfaces of the first clamping piece, the second clamping piece and the workpiece are respectively abutted against an inner ring, the lower surface of the upper pressing plate is abutted against the upper surface of a disc of the workpiece, the brake shoe can be fixed on the turn-milling composite machine tool, so that the machine tool can continuously carry out eight procedures of turning an excircle, turning an end surface, drilling, reaming, chamfering, milling a groove, milling, and meanwhile, the brake shoe can still be firmly fixed after the brake shoe is milled off by the machine tool.
Description
Technical Field
The invention relates to the field of automobile part machining, in particular to a brake shoe jig for a turning and milling composite machine tool.
Background
The brake shoe is a friction coupling part of a drum brake, is an accessory which is pushed outwards to expand and press a brake drum to play a braking role under the action of a brake cam or a push rod, is arranged on the brake drum, and is one of key safety parts in an automobile braking system. The shape of the brake shoe is half-moon-shaped, when a brake is stepped on, two half-moon-shaped brake shoes are expanded under the action of the brake wheel cylinder to support the brake shoes to rub the inner wall of the brake drum to play a role in speed reduction or parking, the brake shoes need to continuously pass through 8 drilling, reaming, chamfering, groove milling, small opening milling and large opening milling procedures, the prior art always needs to sequentially pass through the 8 milling procedures for the brake shoes, and the brake shoes need to be assembled and disassembled again after each milling procedure, so that the efficiency is low.
In the prior art, a turning and milling combined machine tool can comprehensively provide three processing modes of a lathe, a drilling machine and a milling machine, a plurality of drilling machines and milling machines are still used for processing brake shoes in the prior industry, and the 8 procedures of putting the brake shoes on the turning and milling combined machine tool for processing are not considered.
The clamp is required to be capable of fixing the brake shoe, and the clamp with the brake shoe fixed is installed on a three-jaw chuck of a turning and milling combined machine tool, so that the brake shoe can be subjected to 8 drilling, reaming and milling procedures of turning an outer circle, turning an end face, drilling, reaming, chamfering, milling a groove, milling a small opening and milling a large opening on the turning and milling combined machine tool, meanwhile, the clamp is required to be free from interfering with the processing of the brake shoe, and the brake shoe can be fixed in the processing process and after the processing is completed.
Disclosure of Invention
The invention aims to provide a brake shoe fixture for a turning and milling composite machine tool, which can fix a brake shoe on the turning and milling composite machine tool so that the turning and milling composite machine tool can process the brake shoe, does not influence the processing of the machine tool, and can still firmly fix the brake shoe after the machine tool mills the brake shoe off.
In order to solve the above problems, the present invention provides the following technical solutions:
the utility model provides a brake shoe tool for turning and milling compound lathe, including installing the first fastener on the lathe three-jaw chuck, the second fastener, third fastener and top board, first fastener, second fastener and third fastener pass through the bolt and install on the three jack catch of three-jaw chuck, the top board passes through the bolt and installs on first fastener and second fastener and with the work piece centre gripping at first fastener, between second fastener and the top board, first fastener, second fastener and work piece lower surface and the equal butt of inner circle, the lower surface of top board and the disc upper surface butt of work piece.
Furthermore, the first clamping piece comprises a supporting plate and a clamping block, the supporting plate is arranged below the workpiece and connected with the clamping jaw of the chuck, the clamping block is arranged on the supporting plate, the supporting plate and the clamping block are integrated, the clamping block is abutted to the inner ring of the workpiece in a working state, and the supporting plate does not exceed the outer ring inner ring of the workpiece.
Furthermore, mounting holes which penetrate through the supporting plate and the clamping block respectively are formed in the supporting plate and the clamping block, the mounting holes and the preset threaded holes in the clamping chuck clamping jaws are coaxial and the same in size, bolts are installed on the mounting holes and penetrate through the mounting holes to be in threaded connection with the clamping chuck clamping jaws, and embedding holes with the depth and the diameter larger than those of the bolts and nuts are formed in the mounting holes.
Furthermore, the third clamping piece comprises a supporting plate and a clamping block, wherein the supporting plate is arranged below the workpiece and connected with the clamping jaws of the chuck, the clamping block is arranged on the supporting plate, the supporting plate and the clamping block are integrated, and the clamping block is abutted to the outer ring of the double-shaft hole of the workpiece in the working state and the supporting plate does not exceed the outer ring of the workpiece.
Furthermore, the supporting plate is provided with a processing hole which is coaxial with the workpiece double-shaft hole, and the diameter of the processing hole is larger than that of the processed shaft hole.
Furthermore, mounting holes which penetrate through the supporting plate and the clamping block respectively are formed in the supporting plate and the clamping block, the mounting holes and the preset threaded holes in the clamping chuck clamping jaws are coaxial and the same in size, bolts are installed on the mounting holes and penetrate through the mounting holes to be in threaded connection with the clamping chuck clamping jaws, and embedding holes with the depth and the diameter larger than those of the bolts and nuts are formed in the mounting holes.
Further, the top board including with the clamp plate of work piece inner ring upper surface butt and with first fastener, the assembly plate of second fastener upper surface butt, be equipped with the cell type connecting hole on the assembly plate, the long edge direction of connecting hole is parallel with the direction of motion of chuck jack catch, the connecting hole below is equipped with the connecting hole that sets up on the fixture block, it is provided with the screw thread to circle in the connecting hole, install the bolt on the connecting hole and pass connecting hole and connecting hole threaded connection, be equipped with the cell type embedding hole that degree of depth and diameter all are greater than this bolt and nut on the connecting hole.
Furthermore, the second clamping piece and the first clamping piece are of the same structure.
Has the advantages that:
a worker installs a first clamping piece, a second clamping piece and a third clamping piece on a three-jaw chuck through bolts, then clamps a workpiece between the first clamping piece, the second clamping piece and the third clamping piece and supports the inner ring of the workpiece tightly through an adjusting chuck so as to limit the radial movement of the workpiece relative to the chuck, then installs an assembling plate on the first clamping piece and the second clamping piece and screws through the bolts so that a pressing plate firmly supports the workpiece on a supporting plate so as to limit the axial movement of the workpiece relative to the chuck, the supporting plate and the supporting plate support the workpiece, and the supporting plate do not exceed the inner edge of the outer ring of the workpiece, so that the workpiece can be turned to an outer circle and a turning end surface on a turning and milling composite machine tool after the rotation of the chuck, meanwhile, the turning tool is not in contact with the clamping jaws and the supporting plate, after the working procedures of turning the outer circle and the turning end surface are completed, the chuck rotates to a fixed angle, the machining method comprises the steps of drilling, reaming and chamfering double-shaft holes of a workpiece, wherein a drill bit is not in contact with a supporting plate or a chuck in the drilling process by machining the holes, a shaft working table of the turning composite machine tool moves and is replaced by a milling cutter after the machining process is finished, a small fracture of the workpiece is milled, a small opening and a large opening are milled, and a worker takes down and replaces the workpiece after all machining is finished.
1. The method can carry out 8 processes of turning the outer circle, turning one end face, drilling, reaming, chamfering, milling the groove, milling the small opening and milling the large opening only by one-time clamping.
2. The jig is simple to install and high in universality.
Drawings
FIG. 1 is a perspective view of the present invention prior to processing;
FIG. 2 is a perspective view of the present invention after processing;
FIG. 3 is a top view of the present invention;
FIG. 4 is an exploded perspective view of the present invention;
FIG. 5 is a further exploded isometric view of the present invention;
FIG. 6 is a further exploded perspective view of the first embodiment of the present invention;
FIG. 7 is a further exploded perspective view of the present invention;
FIG. 8 is a top view of the first card member of the present invention;
FIG. 9 is a perspective view of a first clip piece of the present invention;
FIG. 10 is a top view of a third clip of the present invention;
FIG. 11 is a perspective view of a third clip of the present invention;
description of reference numerals: the clamping device comprises a first clamping piece 01, a supporting plate 1a, a clamping block 1b, a mounting hole 1c, an embedding hole 1d, a connecting hole 1e, a second clamping piece 02, a third clamping piece 03, a supporting plate 3a, a clamping block 3b, a mounting hole 3c, an embedding hole 3d, a machining hole 3e, an upper pressing plate 04, a pressing plate 4a, an assembling plate 4b, a connecting hole 4c and an embedding hole 4 d.
Detailed Description
The following detailed description of specific embodiments of the present invention is made with reference to the accompanying drawings and examples:
referring to fig. 1 to 11, the brake shoe jig for the turning and milling composite machine tool comprises a first clamping piece 01, a second clamping piece 02, a third clamping piece 03 and an upper pressure plate 04 which are installed on a three-jaw chuck of the machine tool, wherein the first clamping piece 01, the second clamping piece 02 and the third clamping piece 03 are installed on three clamping jaws of the three-jaw chuck through bolts, the upper pressure plate 04 is installed on the first clamping piece 01 and the second clamping piece 02 through bolts and clamps a workpiece between the first clamping piece 01, the second clamping piece 02 and the upper pressure plate 04, the lower surfaces of the first clamping piece 01, the second clamping piece 02 and the workpiece are respectively abutted against inner rings, the lower surface of the upper pressure plate 04 is abutted against the upper surface of a disc of the workpiece, a worker installs the first clamping piece 01, the second clamping piece 02 and the third clamping piece 03 on the three-jaw chuck through bolts, then installs the workpiece on the first clamping piece 01, the second clamping piece 02 and the third clamping piece 03, and then adjusts the first clamping piece, The second clamping piece 02 and the third clamping piece 03 clamp the inner ring of the workpiece, the upper pressing plate 04 is installed on the first clamping piece 01 and the second clamping piece 02 through bolts, the upper pressing plate 04 is enabled to compress the workpiece, and the turning and milling composite machine tool can be started to process the workpiece after the installation is completed.
First fastener 01 is including setting up in the work piece below and the layer board 1a of being connected with the chuck jack catch and installing fixture block 1b on layer board 1a, layer board 1a and fixture block 1b are integrative, fixture block 1b and the inner circle butt of work piece and layer board 1a do not surpass the outer loop inner circle of work piece under the operating condition, the rotation of three-jaw chuck makes the jack catch drive layer board 1a and removes, fixture block 1b synchronous motion and the inner circle of tightly holding up the work piece, thereby the radial movement of work piece for the chuck jack catch has been restricted to the work piece, layer board 1a holds up the work piece and makes its unsettled on the jack catch and layer board 1a is in the inside of work piece, make the compound lathe and mill lathe and can not contact with layer board 1a or jack.
All be provided with the mounting hole 1c that runs through layer board 1a and fixture block 1b respectively on layer board 1a and the fixture block 1b, the coaxial and with the size of predetermined screw hole on mounting hole 1c and the chuck jack catch, install the bolt on the mounting hole 1c and pass mounting hole 1c and chuck jack catch threaded connection, be equipped with the embedding hole 1d that degree of depth and diameter all are greater than this bolt and nut on the mounting hole 1c, the workman packs in the mounting hole 1c the bolt with the chuck jack catch on predetermined bolt hole connection and screw up, the nut is embedded into and is made layer board 1a and fixture block 1 b's upper surface still be a plane in embedding hole 1d, install top board 04 on installation work piece and the fixture block 1b on layer board 1a and do not receive the influence of nut.
The third clamping piece 03 comprises a supporting plate 3a arranged below the workpiece and connected with clamping jaws of the chuck and a clamping block 3b arranged on the supporting plate 3a, the supporting plate 3a and the clamping block 3b are integrated, the clamping block 3b is abutted against the outer ring of the double-shaft hole of the workpiece in a working state, the supporting plate 3a does not exceed the outer ring of the workpiece, the clamping jaws drive the supporting plate 3a to move by the rotation of the three-jaw chuck, the clamping block 3b synchronously moves and abuts against the outer ring of the double-shaft hole of the workpiece, thereby limiting the radial movement of the workpiece relative to the chuck jaws and simultaneously limiting the rotation of the workpiece on the chuck, the supporting plate 3a supports the workpiece to be suspended on the jaws and the supporting plate 3a is arranged inside the workpiece, the turning and milling composite machine tool can not contact with the supporting plate 3a or the clamping jaw when the excircle of the workpiece is turned, and meanwhile, the turning and milling composite machine tool can not contact with the supporting plate 3a when the excircle of the workpiece is cut off by milling.
The supporting plate 3a is provided with a machining hole 3e coaxial with the double-shaft hole of the workpiece, the diameter of the machining hole 3e is larger than the diameter of the shaft hole after machining is completed, the turning and milling composite machine tool drills and reams the double-shaft hole of the workpiece when the workpiece is fixed in angle, the drill bit cannot contact with the supporting plate 3a when the workpiece is machined through the machining hole 3e, and meanwhile the supporting plate 3a supports the workpiece so that the drill bit does not contact with the surface of the chuck.
All be provided with the mounting hole 3c that runs through layer board 3a and fixture block 3b respectively on layer board 3a and the fixture block 3b, the coaxial and with the size of predetermined screw hole on mounting hole 3c and the chuck jack catch, install the bolt on the mounting hole 3c and pass mounting hole 3c and chuck jack catch threaded connection, be equipped with the embedding hole 3d that degree of depth and diameter all are greater than this bolt and nut on the mounting hole 3c, the workman packs in the mounting hole 3c with the chuck jack catch on predetermined bolt hole connection and screw up the bolt, the nut is embedded into and is made layer board 3a and fixture block 3 b's upper surface still be a plane in embedding hole 3d, the installation work piece does not receive the influence of nut on the layer board 3 a.
The upper pressure plate 04 comprises a pressure plate 4a abutted with the upper surface of an inner ring of a workpiece and an assembling plate 4b abutted with the upper surfaces of the first clamping piece 01 and the second clamping piece 02, a groove-shaped connecting hole 4c is arranged on the assembling plate 4b, the long side direction of the connecting hole 4c is parallel to the moving direction of a clamping jaw of the chuck, a connecting hole 1e arranged on the clamping jaw 1b is arranged below the connecting hole 4c, threads are arranged on the inner ring of the connecting hole 1e, a bolt is arranged on the connecting hole 4c and penetrates through the connecting hole 4c to be in threaded connection with the connecting hole 1e, a groove-shaped embedding hole 4d with the depth and the diameter larger than those of the bolt and the nut is arranged on the connecting hole 4c, after the workpiece is fixed by the clamping jaw, a worker presses the upper pressure plate 04 on the workpiece, then the bolt is inserted into the connecting hole 4c to be in threaded connection with the connecting, the connecting hole 4c and the embedding hole 4d are both groove-shaped holes, so that the upper pressure plate 04 is easier to mount, and the requirement on the casting precision of a workpiece is lower.
The second card member 02 has the same structure as the first card member 01.
The working principle is as follows: a worker installs a first clamping piece 01, a second clamping piece 02 and a third clamping piece 03 on a three-jaw chuck through bolts, then clamps a workpiece between the first clamping piece 01, the second clamping piece 02 and the third clamping piece 03 and tightly supports the inner ring of the workpiece through adjusting the chuck so as to limit the radial movement of the workpiece relative to the chuck, then installs an assembling plate 4b on the first clamping piece 01 and the second clamping piece 02 and tightly fastens the assembling plate through bolts so that a pressing plate 4a firmly supports the workpiece on a supporting plate 1a so as to limit the axial movement of the workpiece relative to the chuck, the supporting plate 1a and the supporting plate 3a support the workpiece, and the supporting plate 1a and the supporting plate 3a do not exceed the inner edge of the outer ring of the workpiece, so that the workpiece can be turned on an outer ring and a turning end face on a turning and milling composite machine tool after the chuck rotates, and meanwhile, the turning tool is not in contact with the clamping jaws and the supporting plate 1a, and after the working procedure of, and meanwhile, the Y-axis power head of the turning composite machine tool moves and is replaced by a drill bit, the double-axis holes of the workpiece are drilled, reamed and chamfered, the drill bit is not contacted with the supporting plate 3a or the chuck in the drilling process by machining the hole 3e, the Y-axis power head of the turning composite machine tool moves and is replaced by a milling cutter after the machining process is completed, the small fracture of the workpiece is milled, the small opening and the large opening are milled, and the workpiece is taken down and replaced by a worker after all machining is completed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (1)
1. The utility model provides a brake shoe tool for turning and milling combined machine tool which characterized in that: the clamping device comprises a first clamping piece (01), a second clamping piece (02), a third clamping piece (03) and an upper pressure plate (04) which are arranged on a three-jaw chuck of a machine tool, wherein the first clamping piece (01), the second clamping piece (02) and the third clamping piece (03) are arranged on three clamping jaws of the three-jaw chuck through bolts, the upper pressure plate (04) is arranged on the first clamping piece (01) and the second clamping piece (02) through bolts and clamps a workpiece between the first clamping piece (01), the second clamping piece (02) and the upper pressure plate (04), the lower surfaces of the first clamping piece (01), the second clamping piece (02) and the workpiece are respectively abutted against an inner ring, the lower surface of the upper pressure plate (04) is abutted against the upper surface of a disc of the workpiece, the first clamping piece (01) comprises a first supporting plate (1 a) which is arranged below the workpiece and is connected with the clamping jaws of the chuck and a first clamping block (1 b) arranged on the first supporting plate (1 a), and the first supporting plate (1 a) and the first, under the working state, the first clamping block (1 b) is abutted against the inner ring of the workpiece, the first supporting plate (1 a) does not exceed the outer ring inner ring of the workpiece, first mounting holes (1 c) respectively penetrating through the first supporting plate (1 a) and the first clamping block (1 b) are respectively formed in the first supporting plate (1 a) and the first clamping block (1 b), the first mounting holes (1 c) are coaxial with threaded holes preset in chuck jaws and have the same size, bolts are mounted on the first mounting holes (1 c) and penetrate through the first mounting holes (1 c) to be in threaded connection with the chuck jaws, embedding holes (1 d) with the depth and the diameter larger than that of the bolts and nuts are formed in the first mounting holes (1 c), the third clamping piece (03) comprises a second supporting plate (3 a) arranged below the workpiece and connected with the chuck jaws and a second clamping block (3 b) arranged on the second supporting plate (3 a), and the second supporting plate (3 a) and the second clamping block (3 b) are integrated, under the working state, the second clamping block (3 b) is abutted to the outer ring of the double-shaft hole of the workpiece, the second supporting plate (3 a) does not exceed the outer ring inner ring of the workpiece, a processing hole (3 e) coaxial with the double-shaft hole of the workpiece is formed in the second supporting plate (3 a), the diameter of the processing hole (3 e) is larger than the diameter of the processed shaft hole, second mounting holes (3 c) respectively penetrating through the second supporting plate (3 a) and the second clamping block (3 b) are formed in the second supporting plate (3 a) and the second clamping block (3 b), the second mounting holes (3 c) are coaxial with and the same as the preset threaded holes in the chuck jaws, bolts are mounted in the second mounting holes (3 c) and penetrate through the second mounting holes (3 c) to be connected with the chuck jaws in a threaded manner, the depth and the diameter of each second mounting hole (3 c) are larger than the embedding holes (3 d) of the bolts and the nuts, and the upper pressure plate (04) comprises a pressure plate (4 a pressure plate abutted to the upper surface of the inner ring of the, The assembling plate (4 b) is abutted to the upper surface of the second clamping piece (02), a groove-shaped connecting hole (4 c) is formed in the assembling plate (4 b), the long side direction of the groove-shaped connecting hole (4 c) is parallel to the movement direction of the chuck jaw, a connecting hole (1 e) formed in the first clamping block (1 b) is arranged below the groove-shaped connecting hole (4 c), threads are arranged on the inner circle of the connecting hole (1 e), a bolt is installed on the groove-shaped connecting hole (4 c) and penetrates through the groove-shaped connecting hole (4 c) to be connected with the connecting hole (1 e) in a threaded mode, a groove-shaped embedding hole (4 d) with the depth and the diameter larger than the bolt and the nut is formed in the groove-shaped connecting hole (4 c), and.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810964628.1A CN108817435B (en) | 2018-08-23 | 2018-08-23 | Brake shoe jig for turning and milling composite machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810964628.1A CN108817435B (en) | 2018-08-23 | 2018-08-23 | Brake shoe jig for turning and milling composite machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108817435A CN108817435A (en) | 2018-11-16 |
| CN108817435B true CN108817435B (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810964628.1A Active CN108817435B (en) | 2018-08-23 | 2018-08-23 | Brake shoe jig for turning and milling composite machine tool |
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| CN (1) | CN108817435B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111185610A (en) * | 2020-01-14 | 2020-05-22 | 李克春 | Self-locking mechanical clamp |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2637084Y (en) * | 2003-08-26 | 2004-09-01 | 陈军 | Motorcycle drum type brake front and rear cover hole processing clamp |
| ATE387287T1 (en) * | 2004-04-22 | 2008-03-15 | Erowa Ag | CLAMPING DEVICE WITH A CLAMPING CHUCK AND A PALLET THAT CAN BE REleasably FIXED TO IT |
| AT509614B1 (en) * | 2010-03-26 | 2012-12-15 | Swarovski Tyrolit Schleif | FASTENING DEVICE FOR A DRILLING CROWN |
| CN202639906U (en) * | 2012-05-31 | 2013-01-02 | 安徽江淮汽车股份有限公司 | Fixture for brake drum or front hub drilling |
| CN203738659U (en) * | 2014-04-01 | 2014-07-30 | 湖南运达机电科技股份有限公司 | Brake shoe cylindrical turning process fixture |
| CN106808001A (en) * | 2017-03-05 | 2017-06-09 | 桐乡市大周商贸有限公司 | A kind of cell body processing unit (plant) of brake disc |
| CN207139343U (en) * | 2017-09-06 | 2018-03-27 | 江苏三志制动器有限公司 | Brake-shoe turning clamp afterwards |
| CN108422158B (en) * | 2018-03-09 | 2020-01-14 | 江西久旺汽车配件制造有限公司 | Machining method for brake drum |
| CN108188423B (en) * | 2018-03-30 | 2019-08-23 | 永康市陌桐电子科技有限公司 | A kind of turnery processing special fixture of automobile Back-braking drum |
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Effective date of registration: 20200724 Address after: No.8, Airport South Road, Xiachen street, Jiaojiang District, Taizhou City, Zhejiang Province Applicant after: Zhejiang Zhongxing needle Co., Ltd Address before: 241002 Anhui Province, Wuhu city Yijiang District Higher Education Park Wenjin Road No. 16 Anhui mechanical and Automotive Engineering Department of Career Technical College Applicant before: Zhang Qiang |
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