CN113369918B - Self-aligning support frame of common lathe - Google Patents
Self-aligning support frame of common lathe Download PDFInfo
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- CN113369918B CN113369918B CN202110759579.XA CN202110759579A CN113369918B CN 113369918 B CN113369918 B CN 113369918B CN 202110759579 A CN202110759579 A CN 202110759579A CN 113369918 B CN113369918 B CN 113369918B
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- 230000008093 supporting effect Effects 0.000 claims abstract description 81
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000005096 rolling process Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000009191 jumping Effects 0.000 description 5
- 238000005457 optimization Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
- B23Q1/76—Steadies; Rests
- B23Q1/763—Rotating steadies or rests
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a self-aligning support frame of an ordinary lathe, which relates to lathe equipment, wherein guide rail seats are respectively arranged on two sides of a mounting seat of the lathe equipment, guide grooves are formed in the guide rail seats, sliding plates are matched with the guide grooves, rotating shafts are arranged on the sliding plates, clamping plates are arranged on the rotating shafts, and supporting clamping parts are arranged on the clamping plates; threaded holes are formed in the sliding plate and are matched with a transmission screw. The clamping plate can be rotatably adjusted relative to the sliding plate, so that the supporting and clamping component can be adjusted in position, the position adjustment is convenient, the center of a workpiece can be automatically adjusted and adapted, and the workpiece supporting effect is better; the overall structure has better rigidity, the supporting stability of the supporting and clamping part is improved, and the supporting stability of the workpiece is stronger; the workpiece is clamped and supported by the supporting and clamping component through the position adjustment of the transmission screw, so that the workpiece can not be locked while stable supporting is met, the friction force is relatively not too large, and the workpiece can be used as a center frame or a follower rest of a lathe.
Description
Technical Field
The invention relates to a lathe, in particular to a self-aligning support frame of an ordinary lathe.
Background
The self-aligning supporting frame of the common lathe is divided into a center frame and a follower rest, wherein the supporting frame is provided with a supporting top column, and the position of the supporting top column is adjusted to cooperatively support a workpiece (such as a shaft to be processed) to rotate, so that the workpiece rotates stably, the workpiece is prevented from jumping and deforming, and turning is smoother.
In the supporting frame, no matter the supporting frame is a center frame or a follow-up frame, the adjustment and locking of supporting jacking columns are troublesome, a plurality of supporting jacking columns are needed to be matched for supporting a middle workpiece at the same time, the center of the workpiece is corresponding to the supporting jacking adjustment of each supporting, the supporting of the workpiece is ensured, the eccentric problem is not caused, and the workpiece is prevented from jumping and deforming.
Disclosure of Invention
In view of the technical problems existing in the background art, the technical problems solved by the invention aim to provide the self-aligning support frame of the common lathe. The supporting and clamping part can automatically adjust the center of the workpiece, the supporting and clamping part is positioned on the clamping plate of the sliding plate, the position of the sliding plate is convenient to adjust, the position of the supporting and clamping part is convenient to adjust, and the clamping plate can rotate relative to the sliding plate to adjust, so that the supporting and clamping part can rotatably support the workpiece, in addition, the structural rigidity is good, and the supporting stability of the supporting and clamping part is strong.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a self-aligning supporting rack of general lathe, including the mount pad, its characterized in that: guide rail seats are respectively arranged on the mounting seat and positioned on two sides of the mounting seat, guide grooves are formed in the guide rail seats, sliding plates are arranged in the guide grooves, rotating shafts are arranged on the sliding plates, clamping plates are arranged on the rotating shafts in a longitudinal mode, locking devices are arranged between the clamping plates and the sliding plates, and supporting clamping parts are arranged on the clamping plates; the sliding plate is provided with a threaded hole, the threaded hole is provided with a driving screw, the driving screw is arranged in parallel with the guide groove, and the driving screw is transversely or vertically arranged. The supporting frame is convenient to use, wherein the driving screw drives the sliding plates to adjust the positions on the mounting seat, the two sliding plates can be relatively close or separate, in addition, the clamping plates can be rotationally adjusted relative to the sliding plates, so that the corresponding supporting clamping parts on the clamping plates can adjust the positions, the position adjustment is more convenient, the center of a workpiece can be automatically adjusted and adapted, the workpiece supporting effect is better, and the workpiece is prevented from jumping and deforming; in addition, the overall structure rigidity is good, the supporting stability of the supporting and clamping part is improved, and the supporting stability of the workpiece is strong; the workpiece is clamped and supported by the supporting and clamping component through the position adjustment of the transmission screw, so that the workpiece is not locked while stable supporting is met, the friction force is relatively not too large, other workpieces in the same batch can be replaced, the position adjustment is carried out through the transmission screw without excessive adjustment, and the workpiece is more practical and convenient to replace; can be used as a center rest or a follower rest of a lathe.
The following optimization or supplementary explanation can be performed on the technical scheme.
For example, the sliding plate is provided with a sliding shaft, the sliding shaft is arranged in the guide groove, the threaded hole is arranged on the sliding shaft, and the sliding shaft is arranged at the lower end of the sliding plate. The sliding shaft is in sliding fit in the guide groove, so that the structure layout is reasonable and compact, and the sliding shaft can adapt to a narrow space.
In addition, the threaded holes on the sliding plate on the guide rail seat on one side are reverse threaded holes, the threaded holes on the sliding plate on the guide rail seat on the other side are forward threaded holes, and two ends of the driving screw are respectively in fit transmission connection with the reverse threaded holes and the forward threaded holes. The transmission screw can simultaneously drive and adjust the sliding plates at two sides to be mutually closed and separated, the adjustment is more convenient, and the supporting of the clamping supporting parts at two sides is more balanced.
The sliding plate is vertically arranged, the guide rail seat and the sliding plate are respectively provided with a first locking hole and a long groove, a first locking screw is arranged between the first locking hole and the long groove, and the long groove is arranged in parallel with the transmission screw. After the position of the sliding plate is adjusted, the sliding plate can be locked, so that the upper supporting and clamping part is ensured to be supported stably.
The locking device comprises a second locking screw, a second locking hole and an arc-shaped groove are respectively formed in the sliding plate and the clamping plate, and the second locking screw is arranged between the second locking hole and the arc-shaped groove. The clamping plate is reasonable in structure, can be matched with the rotation adjustment of the clamping plate, can lock the position after the rotation adjustment, and is more stable in supporting and convenient to lock.
Wherein, the clamping plate is provided with mounting holes for supporting the clamping components to be mounted. The installation and the arrangement of the supporting and clamping components are convenient. The number may be set according to the need.
Wherein the supporting and clamping component is a fixed block or a rotating bearing.
The self-aligning support frame of the common lathe has the beneficial effects that in the self-aligning support frame of the common lathe, the driving screw drives the sliding plate to carry out position adjustment on the mounting seat, in addition, the clamping plate can carry out rotation adjustment relative to the sliding plate, so that the corresponding supporting clamping part of the clamping plate can adjust the position, the position adjustment is more convenient, the self-aligning support frame can automatically adjust and adapt to the center of a workpiece, the workpiece supporting effect is better, and the workpiece is prevented from jumping and deforming; in addition, the overall structure rigidity is good, the supporting stability of the supporting and clamping part is improved, and the supporting stability of the workpiece is strong; the workpiece is clamped and supported by the supporting and clamping component through the position adjustment of the transmission screw, so that the workpiece is not locked while stable supporting is met, the friction force is relatively not too large, other workpieces in the same batch can be replaced, the position adjustment is carried out through the transmission screw without excessive adjustment, and the workpiece is convenient to replace; can be used as a center rest or a follower rest of a lathe. Thus, the present invention is a substantial feature and improvement over the prior art.
Drawings
The details and working principles of the embodiments and examples of the present invention are described below with reference to the drawings.
Fig. 1 is a schematic structural view of a first embodiment of the present invention, in which a horizontal structural support is shown, and two sizes of workpieces are shown.
Fig. 2 is a schematic structural view of a second embodiment of the present invention, in which a horizontal support is shown, and two sizes of workpieces are shown.
Fig. 3 is a side view of a mating structure of a slide plate and a rail seat in the first and second embodiments of the present invention.
Fig. 4 is a schematic structural view of a third embodiment of the present invention, in which a support frame is of a vertical structure, and two sizes of workpieces are shown.
In the figure: 1. a mounting base; 2. a guide rail seat; 3. a guide groove; 4. a slide plate; 5. a rotating shaft; 6. a clamping plate; 7. a locking device; 8. a threaded hole; 9. a drive screw; 10. a slide shaft; 12. a long groove; 13. a first locking screw; 14. a second locking screw; 15. an arc-shaped groove; 16. a mounting hole; 17. supporting the clamping member; 18. a workpiece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some, but not all, embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making inventive efforts are within the scope of this invention.
Referring to the drawings, the self-aligning support frame of the common lathe in the first, second and third embodiments of the present embodiment can be used as a follower rest or a center frame of the lathe.
The self-aligning support frame of the common lathe comprises an installation seat 1, wherein guide rail seats 2 are respectively arranged on the installation seat 1 and positioned on two sides of the installation seat 1; the guide rail seat 2 is provided with the guide groove 3, the guide groove 3 is provided with the sliding plate 4, the sliding plate 4 can slide back and forth on the guide groove 3 along the guide groove 3, and the sliding plate 4 moves more stably; the slide plate 4 is provided with a rotating shaft 5, the rotating shaft 5 is longitudinally arranged, the rotating shaft 5 is provided with a clamping plate 6, and the clamping plate 6 can rotate around the rotating shaft 5 relative to the slide plate 4 so as to adjust and change the relative position. A locking device 7 is arranged between the clamping plate 6 and the sliding plate 4, and the relative position between the clamping plate 6 and the sliding plate 4 can be locked and unlocked through the locking device 7. The clamping plate 6 is provided with a supporting and clamping member 17, and the supporting and clamping member 17 is used for supporting and matching the machining processes such as rotary turning of a workpiece 18. The slide 4 is provided with a threaded hole 8, the threaded hole 8 is provided with a drive screw 9, the drive screw 9 is arranged in parallel with the guide groove 3, the drive screw 9 is transversely or vertically arranged, the threaded hole 8 is matched with the drive screw 9 to be transversely or vertically arranged, and the drive screw 9 rotates positively and negatively to be matched with the threaded hole 8 on the slide 4 in a transmission manner, so that the slide 4 is driven to reciprocate, and the slides on two sides are relatively close to each other and separated.
Wherein, the self-aligning support frame can be arranged on a lathe horizontally or vertically. In the horizontal type, the transmission screw is transversely arranged, and the left side and the right side of the guide rail seat on the mounting seat are respectively provided with one guide rail seat. When the vertical type guide rail is vertical, the driving screw is vertically arranged, and the guide rail seat is respectively arranged on the upper side and the lower side of the installation seat. The mounting seat is used for supporting all parts and connecting the handle to the lathe; wherein, can directly connect the mount pad on the lathe when horizontal, the mount pad still has the base to be used for connecting on the lathe when vertical.
When the lathe is used, the driving screw 9 drives the sliding plates 4 to separate the two sliding plates 4 so that the workpiece 18 is arranged on the lathe, and then the driving screw 9 drives the two sliding plates 4 to be close, in addition, the position of the clamping plate 6 on the sliding plates 4 can be adjusted through rotation, so that the supporting and clamping parts 17 on the sliding plates 4 can be matched with and support the workpiece 18.
The self-aligning support frame of the common lathe drives the sliding plate 4 to carry out position adjustment on the mounting seat 1 through the transmission screw 9, in addition, the clamping plate 6 can carry out rotation adjustment relative to the sliding plate 4, so that the corresponding supporting clamping part 17 of the clamping plate 6 can adjust the position, the position adjustment is more convenient, the center (namely the axis) of the workpiece 18 can be automatically adjusted and adapted, the supporting effect on the workpiece 18 is better, and the workpiece 18 is prevented from jumping and deforming; in addition, the overall structural rigidity of the supporting frame is good, the supporting stability of the supporting and clamping part 17 is improved, and the supporting stability of the workpiece 18 is strong; the workpiece 18 is clamped and supported by the supporting and clamping component 17 through the position adjustment of the transmission screw 9, so that the workpiece 18 is not locked while stable supporting is met, the friction force is relatively not too large, the workpiece 18 can be well suitable for replacing other workpieces 18 in the same batch, the position adjustment is carried out through the transmission screw 9 without too many adjustment positions, and the workpiece 18 is more practical and convenient to replace; the support frame can be used as a center frame or a follower rest of a lathe.
The following optimizations or further description may be made on the basis of the above embodiments.
For example, the slide plate 4 has a slide shaft 10, the slide shaft 10 is disposed in the guide groove 3, the screw hole 8 is located on the slide shaft 10, and the slide shaft 10 is located at the lower end of the slide plate 4. The sliding shaft 10 is in sliding fit in the guide groove 3, meanwhile, the threaded hole 8 is formed in the sliding shaft 10, the sliding plate 4 runs stably on the guide rail seat 2, the structural layout is more reasonable and compact, and the device can be suitable for a narrow space.
In addition, the threaded holes on the sliding plate on the guide rail seat on one side are reverse threaded holes, the threaded holes on the sliding plate on the guide rail seat on the other side are forward threaded holes, and two ends of the driving screw 9 are respectively matched and connected with the reverse threaded holes and the forward threaded holes in a driving manner. The driving screw 9 can drive and adjust the sliding plates 4 on the two sides of the mounting seat to be mutually close and separated, the adjustment is more convenient, the use is more convenient, the operation is simpler, and the supporting of the clamping supporting parts on the two sides is more balanced. The driving screw 9 may be a bidirectional screw or two screws.
Wherein, slide 4 erects the setting, sets up first locking hole and elongated slot 12 respectively on guide rail seat 2 and the slide 4, and promptly first locking hole and elongated slot 12 one of them set up on guide rail seat 2, and another sets up on slide 4. In the drawing, a first locking hole is provided in the slide plate 4, and a long groove 12 is provided in the rail housing 2. A first locking screw 13 is arranged between the first locking hole and the long groove 12, the long groove 12 is parallel to the driving screw 9, and the locking and the loosening are carried out through the matching of the first locking screw 13, so that the sliding plate 4 and the guide rail seat 2 are locked and loosened, after the sliding plate 4 is loosened, the vertical or horizontal position of the sliding plate 4 on the guide rail seat 2 can be adjusted, and after the position of the sliding plate 4 is adjusted, the supporting and stabilizing of the upper supporting and clamping part 17 is ensured after the locking. The first locking hole is in threaded connection with the first locking screw 13 in a matched mode, and the long groove 12 is used for the first locking screw 13 to penetrate through.
The locking device 7 comprises a second locking screw 14, and second locking holes and arc grooves 15 are respectively formed in the sliding plate 4 and the clamping plate 6, namely, one of the second locking holes and the arc grooves 15 is formed in the sliding plate 4, and the other is formed in the clamping plate 6; for example, in the figure, the second locking hole is arranged on the clamping plate 6, and the arc-shaped groove 15 is arranged on the sliding plate 4; the second locking aperture may be provided with a plurality of pairs of cooperating arcuate slots 15. A second locking screw 14 is arranged between the second locking hole and the arc-shaped groove 15 so as to unlock and lock the clamping plate 6 and the sliding plate 4, and the clamping plate 6 can be rotated to adjust the relative position after the unlocking. The clamping plate 6 is reasonable in structure, can be matched with the rotation adjustment of the clamping plate 6, can lock the position after the rotation adjustment, is more stable in supporting and is convenient to lock. The second locking hole is in threaded connection with the second locking screw 14 in a matched mode, and the arc-shaped groove 15 is used for the second locking screw 14 to pass through.
Wherein, the clamping plate 6 is provided with mounting holes 16 for mounting and arranging the supporting clamping components 17. The supporting and clamping member 17 is conveniently installed. The number of mounting holes 16 on each clamping plate 6 may be set in several groups according to the requirements in order to meet the specification requirements of the different work pieces 18 and the supporting clamping members 17.
The supporting and holding member 17 is a fixed block or a rolling bearing. In the first embodiment, the supporting and clamping member 17 is a fixed block, and the fixed block is in sliding fit with the workpiece 18 during the rotation processing, and is usually bored with an arc surface to be in sliding fit with the outer circle of the workpiece 18 for supporting. In the second and third embodiments, the supporting and holding member 17 is a rolling bearing, and the rolling bearing is in rolling engagement with the outer circumference of the workpiece 18 during the rotation processing of the workpiece 18, and is supported by the rolling engagement of the rolling bearing with the outer circumference of the workpiece 18. Usually, when the support frame is a center frame, a rotary bearing is adopted for supporting; the support frame adopts the fixed block to carry out the support when being the follower rest, and of course the swivel bearing can exchange with the fixed block.
While the foregoing is a description of the preferred embodiments of the invention, it should be noted that the scope of the invention is not limited in this respect. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the scope and spirit of the invention as defined in the appended claims.
Claims (6)
1. The utility model provides a self-aligning supporting rack of general lathe, including mount pad (1), its characterized in that: guide rail seats (2) are respectively arranged on the mounting seat (1) and positioned on two sides of the mounting seat (1), guide grooves (3) are formed in the guide rail seats (2), sliding plates (4) are arranged in the guide grooves (3), rotating shafts (5) are arranged on the sliding plates (4), the rotating shafts (5) are longitudinally arranged, clamping plates (6) are arranged on the rotating shafts (5), locking devices (7) are arranged between the clamping plates (6) and the sliding plates (4), and supporting clamping components (17) are arranged on the clamping plates (6);
the sliding plate (4) is provided with a threaded hole (8), the threaded hole (8) is provided with a transmission screw (9), the transmission screw (9) is arranged in parallel with the guide groove (3), and the transmission screw (9) is arranged transversely or vertically;
the sliding plate (4) is provided with a sliding shaft (10), the sliding shaft (10) is arranged in the guide groove (3), the threaded hole (8) is positioned on the sliding shaft (10), and the sliding shaft (10) is positioned at the lower end of the sliding plate (4);
the sliding plate (4) is vertically arranged.
2. A self-aligning support for a common lathe as claimed in claim 1, wherein: the threaded holes on the sliding plate on the guide rail seat on one side are reverse threaded holes, the threaded holes on the sliding plate on the guide rail seat on the other side are forward threaded holes, and two ends of the driving screw are respectively connected with the reverse threaded holes and the forward threaded holes in a matching mode.
3. A self-aligning support for a common lathe as claimed in claim 1, wherein: the guide rail seat (2) and the sliding plate (4) are respectively provided with a first locking hole and a long groove (12), a first locking screw (13) is arranged between the first locking hole and the long groove (12), and the long groove (12) is arranged in parallel with the transmission screw (9).
4. A self-aligning support for a common lathe as claimed in claim 1, wherein: the locking device (7) comprises a second locking screw (14), a second locking hole and an arc-shaped groove (15) are respectively arranged on the sliding plate (4) and the clamping plate (6), and the second locking screw (14) is arranged between the second locking hole and the arc-shaped groove (15).
5. A self-aligning support for a common lathe as claimed in claim 1, wherein: the clamping plate (6) is provided with mounting holes (16) for supporting the clamping components (17) to be mounted.
6. A self-aligning support for a common lathe as claimed in claim 1, wherein: the supporting and clamping member (17) is a fixed block or a rotating bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110759579.XA CN113369918B (en) | 2021-07-06 | 2021-07-06 | Self-aligning support frame of common lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110759579.XA CN113369918B (en) | 2021-07-06 | 2021-07-06 | Self-aligning support frame of common lathe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113369918A CN113369918A (en) | 2021-09-10 |
| CN113369918B true CN113369918B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110759579.XA Active CN113369918B (en) | 2021-07-06 | 2021-07-06 | Self-aligning support frame of common lathe |
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Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20302816U1 (en) * | 2003-02-21 | 2003-04-24 | Buemach Engineering Int Bv | Self centering workpiece stay, has middle holder part operated using work cylinder with compression spring in its piston region |
| CN101628381B (en) * | 2009-07-20 | 2011-06-22 | 徐州工业职业技术学院 | Automatically centering and rollably supporting center frame |
| CN203317056U (en) * | 2013-06-05 | 2013-12-04 | 正代机械(昆山)有限公司 | Center rest for machine tool |
| CN204123116U (en) * | 2014-10-09 | 2015-01-28 | 四川工程职业技术学院 | Three-jaw follow-rest |
| CN104607960B (en) * | 2014-12-03 | 2017-02-22 | 陕西理工学院 | Alternating current servo direct drive self-centering center rest |
| EP3093102B1 (en) * | 2015-05-12 | 2017-09-27 | SMW-Autoblok Spannsysteme GmbH | Stationary support |
| CN106078248A (en) * | 2016-06-30 | 2016-11-09 | 山东建筑大学 | A kind of adjustable support for rotary type workpiece |
| CN206263610U (en) * | 2016-11-08 | 2017-06-20 | 四川工程职业技术学院 | A kind of horizontal lathe processing revolution longaxones parts center rest |
| CN106584136A (en) * | 2016-12-28 | 2017-04-26 | 宁波市精恒凯翔机械有限公司 | Self-centering center frame |
| CN207402453U (en) * | 2017-10-26 | 2018-05-25 | 浙江凯达机床股份有限公司 | A kind of lathe center frame |
| CN207372702U (en) * | 2017-10-26 | 2018-05-18 | 浙江凯达机床股份有限公司 | A kind of backrest |
| CN107953121A (en) * | 2017-11-22 | 2018-04-24 | 恩平市金铭机械制造有限公司 | A kind of adjustable type lathe steady |
| CN112338574A (en) * | 2020-12-17 | 2021-02-09 | 宁波市精恒凯翔机械有限公司 | Self-centering lathe center frame |
-
2021
- 2021-07-06 CN CN202110759579.XA patent/CN113369918B/en active Active
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Effective date of registration: 20230413 Address after: Room 401, Building 9, Zone 6, Wanyang Zhongchuangcheng, Liandu District, Lishui City, Zhejiang Province, 323000 Applicant after: Zhejiang Mingyu Pump Co.,Ltd. Address before: 325200 Room 301, unit 1, building 24, Shahe new village, Jinhu street, Rui'an City, Wenzhou City, Zhejiang Province Applicant before: Zhang Jingyuan |
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Denomination of invention: Self centering support frame for ordinary lathes Granted publication date: 20230512 Pledgee: China Zheshang Bank Co.,Ltd. Lishui Branch Pledgor: Zhejiang Mingyu Pump Co.,Ltd. Registration number: Y2024980007722 |