CN109590498A - One kind being used for the general core fixture that rises of automotive hub Precision Machining - Google Patents
One kind being used for the general core fixture that rises of automotive hub Precision Machining Download PDFInfo
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- CN109590498A CN109590498A CN201811440002.7A CN201811440002A CN109590498A CN 109590498 A CN109590498 A CN 109590498A CN 201811440002 A CN201811440002 A CN 201811440002A CN 109590498 A CN109590498 A CN 109590498A
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- hole
- rises
- core
- main body
- pull rod
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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
- B23B31/40—Expansion mandrels
- B23B31/4006—Gripping the work or tool by a split sleeve
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses one kind to be used for the general core fixture that rises of automotive hub Precision Machining, its structure is simple and convenient to operate, for ease of maintenaince, versatility is good, positioning accuracy and repetitive positioning accuracy are less than or equal to 0.003mm, workpiece is indeformable after clamping, it can be used for the free switching of product processing and solve the problems, such as thin-wall workpiece clamping deformation in industry, reduce production and research and development cost.Mainly it is made of main body, positioning disk, baffle, pull rod, rubber pad, spacer pin, top pillar, guide-localization bar, collar, the core that rises, centre bolt.The present invention has that easy to operate, versatility is good, positioning accuracy is high, product is remodeled time is short, the multinomial technical advantage such as ease of maintenaince, has very wide application prospect in auto parts and components and high-precision manufacture field.
Description
Technical field
The present invention relates to one kind to be used for the general core fixture that rises of automotive hub Precision Machining, belongs to auto parts and components Precision Machining
Technical field.
Background technique
Wheel hub is one of components crucial in automobile chassis, and wheel hub is connect with knuckle by bearing, knuckle connection
Wheel and vehicle body.Wheel hub will bear the load of vehicle body while the car is driving, be the safety member in Automobile Chassis Parts.Cause
This proposes higher technical requirements to indexs such as its size, performances in the production process of automotive hub, it is desirable that wheel hub has
Very high dimensional accuracy, intensity.
The precision of fixture will directly affect bounce and the fit dimension of the precision of wheel hub, especially wheel hub, the size of wheel hub
Tolerance is 0.016mm, run-out tolerance 0.02mm, and this requires the bounces of the tolerance of fixture to be less than 0.005mm, this is to fixture
Assemble and be machined with very high requirement；
But since the previous fixture service life is low, easily damaged, maintenance rate is high, maintenance cost is high, maintenance difficulty is big, versatility not
Good, the disadvantages of dynamic balancing is bad so that rejection rate is higher in process, processing efficiency is low for wheel hub, a large amount of waste so that
Wheel hub processing cost improves, and seriously constrains the mass production of wheel hub.
Summary of the invention
The current fixture service life is low, easily damaged, maintenance rate is high to solve, and maintenance cost is high, and maintenance difficulty is big, versatility
Bad, the disadvantages of dynamic balancing is bad, the invention discloses one kind to be used for the general core fixture that rises of automotive hub Precision Machining.
The technical solution adopted by the present invention is that: described one kind is for the general core fixture that rises of automotive hub Precision Machining by main body
Positioning mechanism and rising presss from both sides functional entity composition, and agent localization mechanism includes: main body, positioning disk；Rise press from both sides functional entity include: gear
Piece, pull rod, rubber pad, spacer pin, top pillar, guide-localization bar, collar, the core that rises, centre bolt.
The main body is equipped with fixture mounting hole, positioning disk mounting hole, top pillar pilot hole, threaded hole one, centre bolt and steps down
Hole, threaded hole two, pull rod pilot hole and spacer pin limit hole；The positioning disk is equipped with main body mounting hole, rise core relief hole and fixed
Position platform.
The baffle is equipped with main body screw hole, pull rod confined planes and anti-interference groove；The pull rod connects equipped with centre bolt
Connect hole, rubber pad mounting hole, main body mating surface, spindle thread hole and limit hole；The top pillar is equipped with guide rod guide surface, collar
Confined planes and rubber pad contact surface；The guide-localization bar be equipped with positioning guide hole, the core guide surface that rises, centre bolt limit hole,
Main body connection screw thread hole and collar guide surface；The collar is equipped with top pillar limiting groove, the core limiting stand that rises, rise core positioning table and fixed
Position bar pilot hole；The core that rises is equipped with collar locating slot, centre bolt limiting stand, taper pilot hole and two-way uniformly distributed fluting；Institute
Centre bolt is stated equipped with pull rod external screw thread and the core limiting slot that rises.
The spacer pin limit hole and the limit of limit hole and spacer pin cooperate；It is tight between pull rod pilot hole and main body mating surface
It is close to be slidably matched；Threaded hole two connect cooperation by six standard bolts with main body screw hole；Spindle thread hole and machine tool chief axis
It is threadedly coupled；Fixture mounting hole is fixedly connected with lathe chuck by six standard bolts；Threaded hole one and main body connection screw thread
Hole passes through three standard bolt connections；Positioning disk mounting hole is connect with main body mounting hole by three standard bolts；Rubber pad peace
It fills and is packed into rubber pad in hole；Guide rod guide surface cooperates with positioning guide hole and top pillar pilot hole guiding respectively；Collar guide surface
It is oriented to and cooperates with locating rod pilot hole；Rubber pad contact surface and the limit of top pillar limiting groove cooperate；The core guide surface that rises is led with taper
It is oriented to and cooperates to hole；Centre bolt limiting stand and core limiting slot limit of rising cooperate；Pull rod external screw thread and centre bolt connecting hole spiral shell
Line cooperation.
The beneficial effects of the present invention are: the present invention is a kind of for the general core fixture that rises of automotive hub Precision Machining, this hair
It is bright to be designed for automotive hub Precision Machining, but be applicable in the auto parts and components Precision Machining of a variety of clamping shapes, lead to
It crosses the rise mode of core of replacement and realizes versatility, which can calibrate and process on lathe, guarantee the dynamic balancing and essence of fixture
Degree, it is of less demanding to the part processing precision of fixture, also it can facilitate and efficiently fixture be repaired, the deformation of clamping workpiece
It measures small, the clamping and processing of minimum wall thickness (MINI W.) 3mm workpiece may be implemented, there is wide application prospect in batch production.
Detailed description of the invention
Fig. 1 show proposed by the present invention a kind of show for the general overall setup for rising by core fixture of automotive hub Precision Machining
Meaning explosive view；
Fig. 2 show a kind of agent localization mechanism for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and shows
It is intended to；
Fig. 3 is shown proposed by the present invention a kind of to be pressed from both sides functional entity and shows for rising for the general core fixture that rises of automotive hub Precision Machining
It is intended to；
Fig. 4 show a kind of main body front for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and illustrates
Figure；
Fig. 5 show a kind of main body back side for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and illustrates
Figure；
Fig. 6 show a kind of positioning disk schematic diagram for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention；
Fig. 7 show proposed by the present invention a kind of press from both sides in functional entity for general the rising for core fixture of rising of automotive hub Precision Machining
Baffle schematic diagram；
Fig. 8 show proposed by the present invention a kind of press from both sides in functional entity for general the rising for core fixture of rising of automotive hub Precision Machining
Pull rod schematic diagram；
Fig. 9 show proposed by the present invention a kind of press from both sides in functional entity for general the rising for core fixture of rising of automotive hub Precision Machining
Rubber pad schematic diagram；
Figure 10 show a kind of rise for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and presss from both sides in functional entity
Spacer pin schematic diagram；
Figure 11 show a kind of rise for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and presss from both sides in functional entity
Top pillar schematic diagram；
Figure 12 show a kind of rise for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and presss from both sides in functional entity
Guide-localization bar schematic diagram；
Figure 13 show a kind of rise for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and presss from both sides in functional entity
Collar schematic diagram；
Figure 14 show a kind of rise for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and presss from both sides in functional entity
Rise core schematic diagram；
Figure 15 show a kind of rise for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and presss from both sides in functional entity
Heart bolt schematic diagram；
Figure 16 show a kind of rise for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and presss from both sides in functional entity
Triangle rises core schematic diagram；
Figure 17 show a kind of rise for the general core fixture that rises of automotive hub Precision Machining proposed by the present invention and presss from both sides in functional entity
Quadrangle rises core schematic diagram.
Specific embodiment
Add specific embodiment 1: being used for automotive hub precision present embodiments provide for one kind in conjunction with Fig. 1-Figure 15 explanation
The specific embodiment of the general core fixture that rises of work；A kind of specific reality for the general core fixture that rises of automotive hub Precision Machining
The mode of applying is expressed as follows:
It is described a kind of by agent localization mechanism 1 and to rise for the general core fixture that rises of automotive hub Precision Machining and press from both sides 2 groups of functional entity
At agent localization mechanism 1 includes main body 1-1, positioning disk 1-2；Rise press from both sides functional entity 2 include baffle 2-1, pull rod 2-2, rubber pad
2-3, spacer pin 2-4, top pillar 2-5, guide-localization bar 2-6, collar 2-7, the core 2-8 that rises, centre bolt 2-9.
The main body 1-1 is equipped with the fixture mounting hole 1-1-1 connecting with lathe；The main body 1-1 is installed equipped with positioning disk
Hole 1-1-2, the main body 1-1 are equipped with the top pillar pilot hole 1-1-3 cooperated with top pillar 2-5；The main body 1-1 is equipped with fixed with guiding
One 1-1-4 of threaded hole of position bar 2-6 assembly；The main body 1-1 is equipped with the centre bolt relief hole stepped down for center bolt 2-9
1-1-5；The main body 1-1 is equipped with two 1-1-6 of threaded hole；The main body 1-1 is equipped with the pull rod pilot hole assembled with pull rod 2-2
1-1-7；The main body 1-1 is equipped with the spacer pin limit hole 1-1-8 cooperated with spacer pin 2-4.
The positioning disk 1-2 is equipped with main body mounting hole 1-2-1；The positioning disk 1-2 is equipped with as core 2-8 activity resigning of rising
Rise core relief hole 1-2-2；The positioning disk 1-2 is equipped with positioning table 1-2-3 required when clamping product.
The baffle 2-1 is equipped with the main body screw hole 2-1-1 installed with main body 1-1；The baffle 2-1 is limited equipped with pull rod
Face 2-1-2；The baffle 2-1 is equipped with anti-interference groove 2-1-3.
The pull rod 2-2 is equipped with the centre bolt connecting hole 2-2-1 connecting with centre bolt；The pull rod 2-2 is equipped with peace
Fill the rubber pad mounting hole 2-2-2 of rubber pad 2-3；The pull rod 2-2 is equipped with the main body mating surface 2-2- assembled with main body 1-1
3；The pull rod 2-2 is equipped with the spindle thread hole 2-2-4 connecting with machine tool chief axis；The pull rod 2-2 is equipped with to be matched with spacer pin 2-4
The limit hole 2-2-5 of conjunction.
The rubber pad 2-3 is mounted in pull rod 2-2 mounting hole 2-2-2, provides movement buffering for top pillar 2-5.
The limit hole 1-1-8 and pull rod 2-2 limit hole 2-2-4 of the spacer pin 2-4 and main body 1-1 cooperates, and limits main body
1-1 and pull rod 2-2 is relatively rotated.
The top pillar 2-5 is equipped with the guide rod guide surface 2-5-1 cooperated with guide-localization bar 2-6；The top pillar 2-5 is equipped with
With the collar confined planes 2-5-2 of collar 2-7 limit cooperation；The top pillar 2-5 is equipped with rubber pad contact surface 2-5-3.
The guide-localization bar 2-6 is equipped with the positioning guide hole 2-6-1 cooperated with top pillar 2-5；The guide-localization bar 2-6
Equipped with the core guide surface 2-6-2 that rises with core 2-8 guiding cooperation of rising, taper is 4 ° -6 °；The guide-localization bar 2-6 be equipped with
The centre bolt limit hole 2-6-3 of centre bolt 2-9 limit cooperation；The guide-localization bar 2-6, which is equipped with to connect with main body 1-1, to be matched
The main body connection screw thread hole 2-6-4 of conjunction；The guide-localization bar 2-6 is equipped with the collar guide surface 2- with collar 2-7 guiding cooperation
6-5。
The collar 2-7 is equipped with the top pillar limiting groove 2-7-1 with top pillar 2-5 limit cooperation；The collar 2-7 be equipped with
The core limiting stand 2-7-2 that rises of the core 2-8 that rises limit cooperation；The collar 2-7 is equipped with fixed with six cores that rise of the core 2-8 location fit that rises
Position platform 2-7-3, six positioning tables make to rise core 2-8 by uniform force when collar 2-7 jack-up；The collar 2-7 is equipped with fixed with guiding
The locating rod pilot hole 2-7-4 of position bar 2-6 guiding cooperation.
The core 2-8 that rises is equipped with the centre bolt limiting stand (2-8-1) with centre bolt 2-9 limit cooperation；The core that rises
2-8 is equipped with the collar locating slot (2-8-2) with collar 2-7 location fit；The core 2-8 that rises is equipped with to be led with guide-localization bar 2-6
To the taper pilot hole 2-8-3 of cooperation, taper is 4 ° -6 °；The core 2-8 that rises uniformly is opened equipped with 12 the two-way of width 2mm
Slot 2-8-4.
The centre bolt 2-9 is equipped with the pull rod external screw thread 2-9-1 connecting with pull rod 2-2；The centre bolt 2-9 is equipped with
With the core limiting slot 2-9-2 that rises for core 2-8 limit cooperation of rising.
The spacer pin limit hole 1-1-8 and limit hole 2-2-5 and spacer pin 2-4 limit cooperates, and limits main body 1-1 and draws
The relative rotation of bar 2-2；It is closely slidably matched between the pull rod pilot hole 1-1-7 and main body mating surface 2-2-3；The screw thread
Two 1-1-6 of hole connect cooperation by six standard bolts with main body screw hole 2-1-1, limits pull rod with pull rod confined planes 2-1-2
The sliding scale of 2-2；The spindle thread hole 2-2-4 is threadedly coupled with machine tool chief axis；The fixture mounting hole 1-1-1 and lathe
Chuck is fixedly connected with six standard bolts；One 1-1-2 of threaded hole and main body connection screw thread hole 2-6-4 passes through three standards
It is bolted；The positioning disk mounting hole 1-1-2 is connect with main body mounting hole 1-2-1 by three standard bolts, is realized to production
The positioning function of product；Rubber pad 2-3 is packed into the rubber pad mounting hole 2-2-2；The guide rod guide surface 2-5-1 respectively with
Positioning guide hole 2-6-1 and top pillar pilot hole 1-1-3 guiding cooperation；The collar guide surface 2-6-5 and locating rod pilot hole 2-
7-4 guiding cooperation；The rubber pad contact surface 2-5-3 and top pillar limiting groove 2-7-1 limit cooperates；The core guide surface 2- that rises
6-2 and taper pilot hole 2-8-3 guiding cooperates；The collar locating slot 2-8-2 and core limiting slot 2-9-2 limit of rising cooperate；Institute
Pull rod external screw thread 2-9-1 and centre bolt connecting hole 2-2-1 is stated to be threadedly engaged.
Specific embodiment 2: embodiment is described with reference to Fig. 16, present embodiments provide for one kind to be used for automotive wheels
The general triangle of hub Precision Machining rises the specific embodiment of core fixture, structure composition, connection type and specific embodiment party
Formula one is identical, and difference is to rise cored structure for triangle.
Specific embodiment 3: embodiment is described with reference to Fig. 17, present embodiments provide for one kind to be used for automotive wheels
The general quadrangle of hub Precision Machining rises the specific embodiment of core fixture, structure composition, connection type and specific embodiment party
Formula one is identical, and difference is to rise cored structure for quadrangle.
The course of work:
Movement one moves pull rod by machine tool chief axis, and pull rod pulls centre bolt, and centre bolt compression rises core, and the core that rises is to the core that rises
The big end motion of guide surface, the core guide surface that rises make core expansion of rising, and complete folder movement of rising.
Movement two, by machine tool chief axis pushing drawing rod, pull rod pushes centre bolt, and centre bolt, which releases, compresses the core that rises；Together
When pull rod push out top pillar, top pillar pushes out collar, and collar pushes out the core that rises, and make to rise rise core of the core to guiding locating rod
Product movement is unloaded in the small end motion of guide surface, realization.
Claims (4)
1. one kind is for the general core fixture that rises of automotive hub Precision Machining it is characterized by: the one kind adds for automotive hub precision
Work is general, and the core fixture that rises by agent localization mechanism (1) and rises and presss from both sides functional entity (2) and form, and agent localization mechanism (1) includes main body
(1-1), positioning disk (1-2)；Rise press from both sides functional entity (2) include baffle (2-1), pull rod (2-2), rubber pad (2-3), spacer pin
(2-4), top pillar (2-5), guide-localization bar (2-6), collar (2-7), the core that rises (2-8), centre bolt (2-9).
2. a kind of general core fixture that rises of automotive hub Precision Machining that is used for described in claim 1 is it is characterized by: the main body
(1-1) is equipped with fixture mounting hole (1-1-1), positioning disk mounting hole (1-1-2), top pillar pilot hole (1-1-3), one (1- of threaded hole
1-4), centre bolt relief hole (1-1-5), threaded hole two (1-1-6), pull rod pilot hole (1-1-7) and spacer pin limit hole (1-
1-8)；The positioning disk (1-2) be equipped with main body mounting hole (1-2-1), rise core relief hole (1-2-2) and positioning table (1-2-3).
3. a kind of general core fixture that rises of automotive hub Precision Machining that is used for described in claim 1 is it is characterized by: the baffle
(2-1) is equipped with main body screw hole (2-1-1), pull rod confined planes (2-1-2) and anti-interference groove (2-1-3)；The pull rod (2-2)
Equipped with centre bolt connecting hole (2-2-1), rubber pad mounting hole (2-2-2), main body mating surface (2-2-3), spindle thread hole (2-
2-4) and limit hole (2-2-5)；The top pillar (2-5) be equipped with guide rod guide surface (2-5-1), collar confined planes (2-5-2) and
Rubber pad contact surface (2-5-3)；The guide-localization bar (2-6) be equipped with positioning guide hole (2-6-1), rise core guide surface (2-6-
2), centre bolt limit hole (2-6-3), main body connection screw thread hole (2-6-4) and collar guide surface (2-6-5)；Collar (the 2-
7) be equipped with top pillar limiting groove (2-7-1), the core limiting stand (2-7-2) that rises, rise core positioning table (2-7-3) and locating rod pilot hole
(2-7-4)；The core that rises (2-8) is equipped with centre bolt limiting stand (2-8-1), collar locating slot (2-8-2), taper pilot hole
(2-8-3) and two-way uniformly distributed fluting (2-8-4)；The centre bolt (2-9) is equipped with pull rod external screw thread (2-9-1) and the core that rises limits
Slot (2-9-2).
4. a kind of general core fixture that rises of automotive hub Precision Machining that is used for described in claim 1 is it is characterized by: spacer pin limits
Position hole (1-1-8) and limit hole (2-2-5) and spacer pin (2-4) limit cooperate；Pull rod pilot hole (1-1-7) and main body mating surface
It is closely slidably matched between (2-2-3)；Threaded hole two (1-1-6) and main body screw hole (2-1-1) are connected by six standard bolts
Connect cooperation；(2-2-4) is threadedly coupled with machine tool chief axis in spindle thread hole；Fixture mounting hole (1-1-1) and lathe chuck pass through six
A standard bolt is fixedly connected；Threaded hole one (1-1-2) and main body connection screw thread hole (2-6-4) are connected by three standard bolts
It connects；Positioning disk mounting hole (1-1-2) is connect with main body mounting hole (1-2-1) by three standard bolts；Rubber pad mounting hole (2-
Rubber pad (2-3) is packed into 2-2)；Guide rod guide surface (2-5-1) respectively with positioning guide hole (2-6-1) and top pillar pilot hole
The cooperation of (1-1-3) guiding；Collar guide surface (2-6-5) and locating rod pilot hole (2-7-4) guiding cooperate；Rubber pad contact surface
(2-5-3) and top pillar limiting groove (2-7-1) limit cooperates；Rise core guide surface (2-6-2) and taper pilot hole (2-8-3) guiding
Cooperation；Collar locating slot (2-8-2) and core limiting slot (2-9-2) limit of rising cooperate；Pull rod external screw thread (2-9-1) and centre bolt
Connecting hole (2-2-1) is threadedly engaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811440002.7A CN109590498A (en) | 2018-11-29 | 2018-11-29 | One kind being used for the general core fixture that rises of automotive hub Precision Machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811440002.7A CN109590498A (en) | 2018-11-29 | 2018-11-29 | One kind being used for the general core fixture that rises of automotive hub Precision Machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109590498A true CN109590498A (en) | 2019-04-09 |
Family
ID=65958928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811440002.7A Pending CN109590498A (en) | 2018-11-29 | 2018-11-29 | One kind being used for the general core fixture that rises of automotive hub Precision Machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109590498A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030143046A1 (en) * | 2001-06-06 | 2003-07-31 | Baumgartner Heinrich Georg | Coupling device particularly for vehicle wheels undergoing surface finishing |
| CN103143745A (en) * | 2013-04-01 | 2013-06-12 | 重庆永达精密机械有限公司 | Lathe clamp for clamping synchronizer gear |
| CN203875370U (en) * | 2014-05-20 | 2014-10-15 | 重庆奥顺特机械制造有限公司 | Splined hub lathing clamp |
| CN104493227A (en) * | 2014-12-25 | 2015-04-08 | 重庆创隆实业有限公司 | Fixture for machining of automotive connecting receptacles |
| CN204700337U (en) * | 2015-06-29 | 2015-10-14 | 锦州捷通铁路机械制造有限公司 | The swollen tire of rolling stock axle box maze trough lathe for machining |
| CN105772777A (en) * | 2014-12-25 | 2016-07-20 | 天津市盛进金属制品有限公司 | Post-tensioning type expanding and clamping clamp |
| CN206139870U (en) * | 2016-08-31 | 2017-05-03 | 南京泉峰汽车精密技术股份有限公司 | Interior expanding anchor clamps suitable for locating hole |
-
2018
- 2018-11-29 CN CN201811440002.7A patent/CN109590498A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030143046A1 (en) * | 2001-06-06 | 2003-07-31 | Baumgartner Heinrich Georg | Coupling device particularly for vehicle wheels undergoing surface finishing |
| CN103143745A (en) * | 2013-04-01 | 2013-06-12 | 重庆永达精密机械有限公司 | Lathe clamp for clamping synchronizer gear |
| CN203875370U (en) * | 2014-05-20 | 2014-10-15 | 重庆奥顺特机械制造有限公司 | Splined hub lathing clamp |
| CN104493227A (en) * | 2014-12-25 | 2015-04-08 | 重庆创隆实业有限公司 | Fixture for machining of automotive connecting receptacles |
| CN105772777A (en) * | 2014-12-25 | 2016-07-20 | 天津市盛进金属制品有限公司 | Post-tensioning type expanding and clamping clamp |
| CN204700337U (en) * | 2015-06-29 | 2015-10-14 | 锦州捷通铁路机械制造有限公司 | The swollen tire of rolling stock axle box maze trough lathe for machining |
| CN206139870U (en) * | 2016-08-31 | 2017-05-03 | 南京泉峰汽车精密技术股份有限公司 | Interior expanding anchor clamps suitable for locating hole |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190409 |
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| RJ01 | Rejection of invention patent application after publication |