CN109226798A - The chuck of anti-workpiece deformation - Google Patents
The chuck of anti-workpiece deformation Download PDFInfo
- Publication number
- CN109226798A CN109226798A CN201811386624.6A CN201811386624A CN109226798A CN 109226798 A CN109226798 A CN 109226798A CN 201811386624 A CN201811386624 A CN 201811386624A CN 109226798 A CN109226798 A CN 109226798A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- claw
- chuck
- clamping face
- disk body
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- B23B31/103—Retention by pivotal elements, e.g. catches, pawls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
A kind of chuck of anti-workpiece deformation is provided, there is disk body, claw, the equidistant linear displacement mechanisms of claw, the front end of the centripetal displacement of claw is formed respectively with orthogonal positioning surface and clamping face；And the single order concave station structure being made up of positioning surface clamping face is contacted with workpiece；And single order concave station is corresponding with the right angle portion matching of workpiece shell side wall surrounding lateral wall；Wherein positioning surface is close to and supports workpiece bottom；The shell side wall of clamping face abutting workpiece surrounding；And the contact surface of clamping face and workpiece surrounding shell side wall is formed with the indent escape groove for reducing contact area.While the present invention guarantees that chuck clamps cubic workpiece stability, the cubic linearity, the centering depth of parallelism；It can more effectively prevent from being pressed from both sides the deformation of shell workpiece, be especially suitable for the processed and applied of four directions Thin-shell Part.
Description
Technical field
The invention belongs to chuck tooling technical fields, and in particular to a kind of chuck of anti-thin wall type workpiece deformation.
Background technique
Chuck is divided into four paws self-centering chuck and four-jaw chuck, and chuck is by disk body, four claws, four
Claw drive displacement mechanism composition.Wherein, movement of the claw on disk body is realized using the principle of constant worm pich transmission
Away from centering linear displacement；Positioning of the workpiece on chuck is the phase by adjusting four linkages or non-linkage claw on chuck
Position is realized.Under the prior art, chuck utilizes disk body upper end facial plane workmanship part positioning surface；It is displaced using claw
The solid block flat grip workpiece surrounding lateral wall in direction makees the clamping that clamping face realizes workpiece.But such chuck
When positioning for small-sized aluminium casting motor thin-walled end cap workpiece clamps, easily end cap is caused to deform；For this purpose, under the prior art,
A kind of Novel self-centering four paws fixture that Authorization Notice No. is CN202212604U in claw towards holder axis by being displaced
Positioning plate (arc) is arranged to avoid the above problem in side.But the design be applied to cubic electric motor end cap there are the problem of
In: the first, surrounding side wall 101 by cubic electric motor end cap workpiece 1 (referring to fig. 2 combine Fig. 1) be thin-wall construction influenced, claw pair
The force clamping face of workpiece is electric motor end cap surrounding upright side walls 101 the weakest；It is larger to deform possibility；The second, claw
Clamping face and workpiece surrounding side wall contact area are larger；In the case where the design of claw drive displacement mechanism other parameters is constant,
The thrust size of claw is directly proportional to contact area, therefore claw is also bigger than normal to the thrust of workpiece；It also results in workpiece and squeezes and become
Shape, in this regard, to clamp workpiece, prevention workpiece deformation from the non-weakness of workpiece；And reduce the contact area of claw and workpiece, to subtract
Few thrust, prevents workpiece extrusion, it is proposed that following improved technology scheme.
Summary of the invention
Present invention solves the technical problem that: a kind of chuck of anti-workpiece deformation is provided, by by the card of chuck
Pawl is designed as orthogonal positioning surface and clamping face, and exerts a force to workpiece surrounding right angle end, while producing indent to clamping face
Escape groove to reduce the contact area of clamping face and workpiece, when solving prior art lower claw and clamping cubic thin-wall case workpiece
The technical issues of easily leading to workpiece deformation.
The technical solution adopted by the present invention: the chuck of anti-workpiece deformation has the four paws of clamping thin-wall case workpiece
The disk body of chuck, and centripetal linear displacement is installed in four 90 ° of vertical direction of disk body four claws and four cards
The equidistant linear displacement mechanisms of pawl, it is characterised in that: the front end of the centripetal displacement of claw is formed respectively with orthogonal positioning
Face and clamping face；And the single order concave station structure being made up of positioning surface clamping face is contacted with workpiece；And single order concave station and workpiece are thin
The right angle portion of shell side wall surrounding lateral wall, which matches, to be corresponded to；Wherein positioning surface is close to and supports workpiece bottom；The clamping face is close to
The shell side wall of workpiece surrounding；And the contact surface of clamping face and workpiece surrounding shell side wall be formed with reduce contact area indent keep away
Allow slot.
In above-mentioned technical proposal, to further decrease clamping face to the chucking power of workpiece: the clamping face only clamps fitting
The part shell side wall of workpiece.
In above-mentioned technical proposal, in the case where claw drive displacement mechanism other parameters are constant, reduce to the maximum extent
Thrust of the claw to workpiece side wall: the escape groove is formed in the middle part of clamping face, and escape groove at least reduces clamping face and workpiece four
The one third of all shell side wall contacts area.
It is the relative displacement of lock dog and disk body, further, the claw and disk body are vertical in above-mentioned technical proposal
In the corresponding screw hole for being formed with axial locking claw and disk body relative displacement of disk body.
In above-mentioned technical proposal, preferably: the screw hole corresponds to each claw and uses two-point locating and with axial compression
Mode locks claw and disk body.
In above-mentioned technical proposal, it is preferable that the claw back side and claw integrated molding are formed with and the matched positioning of disk body
Tooth；The positioning tooth is V-type tooth.
The present invention compared with prior art the advantages of:
1, the positioning surface of this programme claw supports workpiece bottom；Clamping face clamping workpiece surrounding；By orthogonal fixed
The right angle end force of plane and clamping towards workpiece surrounding thin-wall case, compared with the surrounding side wall force vertical to workpiece thin-wall case
Method of clamping；The rigidity at workpiece right angle end is significantly greater than the rigidity at workpiece surrounding thin-walled side wall shell；Therefore, change from rigidity
Bigger right angle end clamping workpiece, the occurrence of can effectively preventing workpiece extrusion；
2, the setting of this programme clamping face indent escape groove；Collaboration aforesaid clip face is only bonded workpiece portion shell side wall folder
Hold the two collective effect；In the case where the other design parameters of claw displacement mechanism are constant, clamping face and workpiece are substantially reduced
Contact area, correspondingly reduced claw to the chucking power size of workpiece；On the basis of aforesaid clip workpiece right angle end exerts a force,
The deformation of shell workpiece can further be prevented；
3, this programme only need to make simple modifications to existing chuck jaws, can effectively solve chuck under the prior art
Clamp the technical issues of cubic parts of thin-wall casing easily leads to workpiece deformation.
Detailed description of the invention
Fig. 1 is the electric motor end cap Workpiece structure schematic diagram of cubic thin-wall construction；
Fig. 2 is the schematic cross-sectional view of Fig. 1；
Fig. 3 is the perspective view of an embodiment of the present invention；
Fig. 4 is the main view after Fig. 3 embodiment clamping workpiece；
Fig. 5 is the A-A cross-sectional view of Fig. 4；
Fig. 6 is the structural schematic diagram of positioning tooth of the present invention.
Specific embodiment
1-6 describes specific embodiments of the present invention with reference to the accompanying drawing.
Embodiment below facilitates a better understanding of the present invention, but does not limit the present invention.Following embodiments are only this hairs
Bright a part of the embodiment, instead of all the embodiments.Component as used in the following examples is unless otherwise specified
It is commercially available.The realization of control circuit in following embodiments is unless otherwise specified conventional control mode.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The chuck of anti-workpiece deformation, has the chuck disk body 2 of clamping thin-wall case workpiece 1, and along disk body 2
The equidistant linear displacement mechanisms of four claws 3 and four claws 3 of centripetal linear displacement installation in four 90 ° of vertical direction,
It should be understood that the equidistant linear displacement mechanisms of four claws and the equidistant linear displacement mechanisms principle phase of scroll chuck
Together, as the big vertebra gear back side is formed with plane systematic screw thread, is engaged on the bevel pinion that four direction is equipped with big vertebra gear, pass through
Turn bevel pinion realizes the equidistant centripetal linear displacement of four direction claw to clamp cubic workpiece.In addition to this, described four
Claw in four vertical direction of dog chuck disk can also realize four by cylinder independent on four direction or Driven by Hydraulic Cylinder
A direction upper clipping claw synchronizes the Workpiece clamping operation of centripetal displacement.
On this basis, the chuck of anti-workpiece deformation, it is characterised in that: the centripetal displacement of (referring to Fig. 3) described claw 3
Front end be formed respectively with orthogonal positioning surface 4 and clamping face 5；And the single order concave station being made up of positioning surface 4 and clamping face 5
Structure is contacted with workpiece 1；And single order concave station is corresponding with the right angle portion matching of 1 shell side wall of workpiece, 101 surrounding lateral wall；Work as card
When 3 centripetal linear displacement of pawl, positioning surface 4 and clamping face 5 on 3 four direction of claw are respectively facing 1 shell side wall 101 4 of workpiece
The more rigid flange right angle portion of all lateral walls applies thrust (referring to Fig. 5), to prevent 1 extrusion of workpiece；The positioning
It is close to and supports 1 bottom of workpiece in face 4；The clamping face 5 is close to the shell side wall 101 of 1 surrounding of workpiece；And clamping face 5 and workpiece 1
The contact surface of surrounding shell side wall 101 is formed with the indent escape groove 6 for reducing contact area (referring again to Fig. 3).Above-described embodiment
In, to further decrease clamping face 5 to the chucking power of workpiece: the clamping face 5 only clamps the part shell side wall of fitting workpiece 1
101.Specifically: i.e. clamping face 5 along disk body 2 axial width be 1 shell side wall of workpiece, 101 height half or three/
Two；Chucking power is reduced by reducing the area of clamping face, to prevent the deformation of workpiece 1.Furthermore in above-described embodiment, in card
In the case that 3 drive displacement mechanism other parameters of pawl are constant, further to reduce claw 3 to the maximum extent to 1 side wall of workpiece
Thrust: the escape groove 6 is formed on 5 middle part (in conjunction with Fig. 4) of clamping face, and escape groove 6 at least reduces clamping face 5 and 1 surrounding of workpiece
The one third of 101 contact area of shell side wall.It is the relative displacement of lock dog and disk body, further in above-described embodiment
Ground, the claw 3 and disk body 2 are perpendicular to the corresponding screw hole 7 for being formed with 2 relative displacement of axial locking claw 3 and disk body of disk body 2.When
After claw 3 in four vertical direction of 2 disk of disk body clamps workpiece 1；The screw hole of claw 3, disk body 2 is successively screwed using bolt
7 lock the relative position of claw 3 and disk body 2 with axial compression and then start to process workpiece to be processed 1.It is excellent in above-described embodiment
Selection of land: the corresponding each claw 3 of the screw hole 7 is used two-point locating and is locked claw 3 and disk body 2 in a manner of axial compression.Often
Two screw holes 7 of a claw 3 are linked to be line setting along claw direction of displacement two o'clock.In above-described embodiment, to ensure the linear position of claw 3
The precision of shifting, it is preferable that 3 back side of claw and the integrated molding of claw 3 are formed with and the matched positioning tooth 8 of disk body 1；The positioning
Tooth 8 is V-type tooth.
Working principle: the chuck is particularly suitable for determining for cubic parts of thin-wall casing such as small-sized cubic electric motor end cap
Used in position clamps；Wherein, in 2 disk of disk body, four vertical direction centripetal linear displacement claw 3 towards disk body center four directions to
The displacement of electric motor end cap four edges is pressed from both sides, until the positioning surface 4 of claw 3 supports the bottom of workpiece 1；The clamping face 5 of claw 3 is with the smallest
Contact area clamps each side of the surrounding shell side wall 101 of workpiece 1；It realizes to such as cubic electric motor end cap of Thin-shell Part
The positioning of more rigid two, shell right angle portion right-angle side clamps；After four sides with claw positioning clamping workpiece, use
Eight bolts correspond to four claws 3 on four direction and two-point locating are respectively adopted, be locked two-by-two claw 3 and disk body 2
Relative displacement；Set and Positioning and locking of such as cubic Thin-shell electric motor end cap workpiece on chuck are completed, under realizing
One step processes the high-precision of end cap.
As it can be seen that the positioning surface 4 of claw 3 of the present invention supports 1 bottom of workpiece；5 clamping workpiece of clamping face, 1 surrounding；By mutual
Vertical positioning surface 4 and clamping face 5 exerts a force (referring to Fig. 5) to the right angle end of 1 surrounding thin-wall case of workpiece, more only thin to workpiece 1
For the method for clamping that the vertical surrounding side wall 101 of wall shell exerts a force: it is thin that the rigidity at workpiece right angle end is significantly greater than workpiece surrounding
Rigidity at wall side wall shell；Therefore, change from more rigid right angle end clamping workpiece 1, more can effectively prevent workpiece 1 and be squeezed
The generation of deformation；Furthermore the setting of 5 indent escape groove 6 of clamping face of the present invention；Collaboration aforesaid clip face is only bonded workpiece portion
Divide both shell side wall clampings collective effect；The other design parameters of chuck claw displacement mechanism under the prior art are constant
In the case where, have and clamp the contact area in face by greatly reducing clamping face 5 and workpiece 1, so that reaching corresponding reduces claw 3
To the effect of 1 chucking power of workpiece；On the basis of aforesaid clip workpiece right angle end exerts a force, it further can effectively prevent shell workpiece
Deformation.
In conclusion the present invention only need to make simple modifications to existing chuck jaws, can effectively solve under the prior art
Chuck clamps the technical issues of cubic parts of thin-wall casing easily leads to workpiece deformation.Guarantee that chuck clamps cubic workpiece
While stability, the cubic linearity, the centering depth of parallelism；It can effectively prevent being pressed from both sides the deformation of shell workpiece.
Above-described embodiment, only presently preferred embodiments of the present invention, is not intended to limit the invention practical range, therefore all with this
The equivalence changes that content described in invention claim is done should all be included within scope of the invention as claimed.
Claims (6)
1. the chuck of anti-workpiece deformation, has the disk body (2) of the chuck of clamping thin-wall case workpiece (1), Yi Jiyan
Four claws (3) of centripetal linear displacement installation and four claws (3) is equidistant in (2) four 90 ° of vertical direction of disk body
Linear displacement mechanisms, it is characterised in that: the front end of the centripetal displacement of the claw (3) is formed respectively with orthogonal positioning surface (4)
With clamping face (5)；And it is contacted by the single order concave station structure that positioning surface (4) and clamping face (5) form with workpiece (1)；And single order
Concave station is corresponding with the right angle portion matching of workpiece (1) shell side wall (101) surrounding lateral wall；Wherein positioning surface (4) is close to and is supported
Workpiece (1) bottom；The clamping face (5) is close to the shell side wall (101) of workpiece (1) surrounding；And clamping face (5) and workpiece (1)
The contact area of surrounding shell side wall (101) is reduced the indent escape groove (6) of contact area.
2. the chuck of anti-workpiece deformation according to claim 1, it is characterised in that: the clamping face (5) only clamps
It is bonded the part shell side wall (101) of workpiece (1).
3. the chuck of anti-workpiece deformation according to claim 1, it is characterised in that: the escape groove (6) is formed on folder
It holds in the middle part of face (5), and escape groove (6) at least reduces clamping face (5) and workpiece (1) surrounding shell side wall (101) contact area
One third.
4. the chuck of anti-workpiece deformation according to claim 1, it is characterised in that: the claw (3) and disk body (2)
Perpendicular to disk body (2) the corresponding screw hole (7) for being formed with axial locking claw (3) and disk body (2) relative displacement.
5. the chuck of anti-workpiece deformation according to claim 4, it is characterised in that: the screw hole (7) is corresponding each
Claw (3) is used two-point locating and is locked claw (3) and disk body (2) in a manner of axial compression.
6. the chuck of anti-workpiece deformation according to claim 1, it is characterised in that: claw (3) back side and card
Pawl (3) integrated molding is formed with and disk body (1) matched positioning tooth (8)；The positioning tooth (8) is V-type tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386624.6A CN109226798A (en) | 2018-11-20 | 2018-11-20 | The chuck of anti-workpiece deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386624.6A CN109226798A (en) | 2018-11-20 | 2018-11-20 | The chuck of anti-workpiece deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109226798A true CN109226798A (en) | 2019-01-18 |
Family
ID=65075485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811386624.6A Withdrawn CN109226798A (en) | 2018-11-20 | 2018-11-20 | The chuck of anti-workpiece deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109226798A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551274A (en) * | 2019-01-24 | 2019-04-02 | 中航力源液压股份有限公司 | A kind of V-arrangement clamping turning attachment |
| CN111805447A (en) * | 2020-06-30 | 2020-10-23 | 重庆中核工业自动化控制***有限公司 | Thin-wall flexible part clamp |
| CN113770664A (en) * | 2021-08-16 | 2021-12-10 | 重庆铁马变速箱有限公司 | Thin-wall gear ring machining deformation control method |
| CN114227333A (en) * | 2021-12-31 | 2022-03-25 | 兴化日成金属制品有限公司 | Hydraulic chuck capable of clamping square products |
| CN117139820A (en) * | 2023-10-27 | 2023-12-01 | 万向钱潮股份公司 | Positioning and clamping device for ball cage assembly and assembly method |
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| FR2510441A1 (en) * | 1981-07-28 | 1983-02-04 | Forkardt Paul Gmbh | CLAMPING MACHINE FOR CHUCK CONTAINING A WORKPIECE |
| JP2000135608A (en) * | 1998-10-30 | 2000-05-16 | Howa Mach Ltd | Chuck capable of changing chuck form between two-jaw chuck and three-jaw chuck |
| TW437489U (en) * | 2000-03-15 | 2001-05-28 | Ta Ho Prec Ind Co Ltd | Improved chuck structure for center cutting machine |
| CN201279684Y (en) * | 2008-10-31 | 2009-07-29 | 杨建良 | Four-paw self-centring clamper for clamping monocrystalline silicon workpiece |
| CN202212604U (en) * | 2011-08-30 | 2012-05-09 | 安徽皖南新维电机有限公司 | Novel self-centering four-claw clamp |
| CN202684135U (en) * | 2012-07-03 | 2013-01-23 | 南京数控机床有限公司 | Adjustable clamping jaw clamping device for numerically controlled lathe chuck |
| CN202779876U (en) * | 2012-08-15 | 2013-03-13 | 宝钢特种材料有限公司 | Chuck |
| CN103464800A (en) * | 2013-09-23 | 2013-12-25 | 苏州凯欧机械科技有限公司 | Floating type novel turning and positioning device for thin-wall piece |
| CN203509091U (en) * | 2013-10-21 | 2014-04-02 | 淄博弘扬威德福油田设备有限公司 | Special clamp for machining rod head of oil pumping rod |
| CN104551060A (en) * | 2014-12-24 | 2015-04-29 | 中发输配电设备（平湖）有限公司 | Stepped chuck clamp |
| CN205110838U (en) * | 2015-11-04 | 2016-03-30 | 宁波海天精工股份有限公司 | Take powerful jack catch of high rigidity of afterburning mechanism |
| CN209363640U (en) * | 2018-11-20 | 2019-09-10 | 陕西海力特精密机械有限公司 | The chuck of anti-workpiece deformation |
-
2018
- 2018-11-20 CN CN201811386624.6A patent/CN109226798A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2510441A1 (en) * | 1981-07-28 | 1983-02-04 | Forkardt Paul Gmbh | CLAMPING MACHINE FOR CHUCK CONTAINING A WORKPIECE |
| JP2000135608A (en) * | 1998-10-30 | 2000-05-16 | Howa Mach Ltd | Chuck capable of changing chuck form between two-jaw chuck and three-jaw chuck |
| TW437489U (en) * | 2000-03-15 | 2001-05-28 | Ta Ho Prec Ind Co Ltd | Improved chuck structure for center cutting machine |
| CN201279684Y (en) * | 2008-10-31 | 2009-07-29 | 杨建良 | Four-paw self-centring clamper for clamping monocrystalline silicon workpiece |
| CN202212604U (en) * | 2011-08-30 | 2012-05-09 | 安徽皖南新维电机有限公司 | Novel self-centering four-claw clamp |
| CN202684135U (en) * | 2012-07-03 | 2013-01-23 | 南京数控机床有限公司 | Adjustable clamping jaw clamping device for numerically controlled lathe chuck |
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| CN103464800A (en) * | 2013-09-23 | 2013-12-25 | 苏州凯欧机械科技有限公司 | Floating type novel turning and positioning device for thin-wall piece |
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| CN205110838U (en) * | 2015-11-04 | 2016-03-30 | 宁波海天精工股份有限公司 | Take powerful jack catch of high rigidity of afterburning mechanism |
| CN209363640U (en) * | 2018-11-20 | 2019-09-10 | 陕西海力特精密机械有限公司 | The chuck of anti-workpiece deformation |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551274A (en) * | 2019-01-24 | 2019-04-02 | 中航力源液压股份有限公司 | A kind of V-arrangement clamping turning attachment |
| CN109551274B (en) * | 2019-01-24 | 2023-11-24 | 中航力源液压股份有限公司 | V-shaped clamping lathe fixture |
| CN111805447A (en) * | 2020-06-30 | 2020-10-23 | 重庆中核工业自动化控制***有限公司 | Thin-wall flexible part clamp |
| CN113770664A (en) * | 2021-08-16 | 2021-12-10 | 重庆铁马变速箱有限公司 | Thin-wall gear ring machining deformation control method |
| CN114227333A (en) * | 2021-12-31 | 2022-03-25 | 兴化日成金属制品有限公司 | Hydraulic chuck capable of clamping square products |
| CN114227333B (en) * | 2021-12-31 | 2024-05-03 | 兴化日成金属制品有限公司 | Hydraulic chuck capable of clamping square products |
| CN117139820A (en) * | 2023-10-27 | 2023-12-01 | 万向钱潮股份公司 | Positioning and clamping device for ball cage assembly and assembly method |
| CN117139820B (en) * | 2023-10-27 | 2024-02-20 | 万向钱潮股份公司 | Positioning and clamping device for ball cage assembly and assembly method |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190118 |
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| WW01 | Invention patent application withdrawn after publication |