CN104227458B - Multi-station self-centering rotary clamp for bearing cap - Google Patents
Multi-station self-centering rotary clamp for bearing cap Download PDFInfo
- Publication number
- CN104227458B CN104227458B CN201410394963.4A CN201410394963A CN104227458B CN 104227458 B CN104227458 B CN 104227458B CN 201410394963 A CN201410394963 A CN 201410394963A CN 104227458 B CN104227458 B CN 104227458B
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- Prior art keywords
- centering
- self
- hydraulic
- piston rod
- plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/061—Work-clamping means adapted for holding a plurality of workpieces
Abstract
The invention discloses a multi-station self-centering rotary clamp for a bearing cap. The multi-station self-centering rotary clamp comprises a bridge plate, wherein a plurality of working units are arranged on the bridge plate in parallel; each working unit sequentially comprises a first hydraulic main pressing mechanism, a first hydraulic self-centering mechanism, a hydraulic auxiliary pressing mechanism, a second hydraulic self-centering mechanism and a second hydraulic main pressing mechanism; the first hydraulic self-centering mechanism comprises a self-centering oil cylinder which can be used for automatically centering and clamping workpieces; the hydraulic auxiliary pressing mechanism sequentially comprises a hydraulic swing clamping cylinder, a swing clamping cylinder pressing plate and two pressure heads; the swing clamping cylinder pressing plate is arranged at the upper end of a piston rod of the hydraulic swing clamping cylinder; the pressure heads are arranged at two ends of the hydraulic swing clamping cylinder pressing plate. According to the multi-station self-centering rotary clamp disclosed by the invention, stations are more, the production efficiency can be greatly improved, and the production cost is reduced; all processing contents can be finished by clamping the workpieces to be processed at one time, so that the processing precision is high; meanwhile, the requirement on high symmetrical degree of the workpieces can be met, and the qualification rate of the products is at least improved by 10 percent.
Description
Technical field
The present invention relates to field of fixtures, be specifically related to a kind of bearing cap multistation self-centering rolling clamp.
Background technology
Original fixture volume is big, uses trouble, and can not meet the folder to above and below
Tool requirement, it is impossible to disposably complete processing.Originally be with chuck self-centering mechanism, volume is big,
The bottom of workpiece is occluded and cannot process.VOLVO belongs to world's top-notch brand name, so its workpiece requirement
Higher.And traditional fixture is not only difficult to meet drawing tolerance, and once can only produce one
Individual, production efficiency is low, and manufacturing cost is high, seriously constrains the development of industry.
Accordingly, it would be desirable to design a kind of new fixture.
Summary of the invention
For solving above-mentioned technical problem, it is proposed that a kind of bearing cap multistation self-centering rolling clamp,
To reach improve processing precision of products and improve the purpose of production efficiency.
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of bearing cap multistation self-centering rolling clamp, including bridge plate, described bridge plate sets side by side
Multiple working cell, described working cell is had to include the first Hydraulic Main hold-down mechanism, the first liquid successively
Pressure self-centering mechanism, hydraulic pressure auxiliary hold-down mechanism, the second hydraulic self-centering mechanism and the second Hydraulic Main
Hold-down mechanism；
First Hydraulic Main hold-down mechanism and the second Hydraulic Main hold-down mechanism are identical, the first hydraulic self-centering
Mechanism is identical with the second hydraulic self-centering mechanism；Described first hydraulic self-centering mechanism, described second
The level that hydraulic self-centering mechanism and described hydraulic pressure auxiliary hold-down mechanism may be contained within described bridge plate sets
On the location-plate put；
Described first Hydraulic Main hold-down mechanism includes on the clamping seats with workpiece shapes adaptation, clamping seats
Three compressed oil cylinders being set up in parallel and the seat JINJI structure adaptive with workpiece shapes, on described clamping seats
It is additionally provided with the two or more clamp for fixing to clamp workpiece near one end of described seat JINJI structure；
Described first hydraulic self-centering mechanism includes self-centering oil cylinder, and described self-centering oil cylinder can be by work
Part self-centering the clamping that is fixed；
Described hydraulic pressure auxiliary hold-down mechanism includes hydraulic corner cylinder, corner cylinder pressing plate and two pressures successively
Head, described corner cylinder pressing plate is installed on the piston rod upper end of described hydraulic corner cylinder, and described pressure head sets
Two ends in described corner cylinder pressing plate；
Described compressed oil cylinder, described self-centering oil cylinder and described hydraulic corner cylinder all hang down with described bridge plate
Directly.
Preferably, described seat JINJI structure includes seat gold one, seat gold two and seat gold three, described seat gold one
With one end that described seat gold two is located at described location-plate, described seat gold three is located on described location-plate use
In supporting workpiece.
Preferably, described self-centering oil cylinder includes piston rod one, is perpendicular to the work of described piston rod one
Stopper rod two and the jaw being located at described piston rod two end；The quantity of described piston rod two is two,
It is respectively arranged at the both sides, upper end of described piston rod one, and the axis of two piston rods two overlaps；
The up and down motion of described piston rod one can promote the described piston rod two of its both sides to drive described jaw left
Right motion, by workpiece self-centering and be close to described seat gold one and described seat gold two.
Preferably, mated by oat tail groove structure between described piston rod one and described piston rod two,
Thus realize the up and down motion of described piston rod one to be converted into the side-to-side movement of described piston rod two.
Preferably, the cylinder body afterbody of described hydraulic corner cylinder is provided with the cover plate two of sealed cylinder, when certainly
After centering clamping work completes, the piston rod of described hydraulic corner cylinder moves downward, and drives described turning
Angle cylinder pressing plate and described pressure head do 90 degree and rotate and be pressed downward against so that workpiece is adjacent to seat gold three.
Preferably, described hydraulic corner cylinder and described self-centering oil cylinder are all assembled into described location-plate
Integrally；Described location-plate is provided with piston rod and the described self-centering oil being available for described hydraulic corner cylinder
The through hole that the piston rod one of cylinder passes；Described location-plate is provided with for preventing dust from falling into described logical
The cover plate three in hole.
Preferably, described location-plate upper surface is provided with two mistake proofing blocks, can prevent that workpiece is anti-loaded to be caused
To be held on mistake proofing block and cannot put in place by clamping after locating surface disunity, i.e. workpiece rotation turnback.
Preferably, described working cell is provided with a point oil clot, described point of oil clot one side and described bridge plate
Locking, another side is locked with described location-plate.
Preferably, described hydraulic corner cylinder is flange form hydraulic corner cylinder.
Compared with prior art, the invention have the advantages that
The present invention uses hydraulic self-centering mechanism to position workpiece to be processed, positional accuracy
Higher, repetitive positioning accuracy is higher, is remarkably improved qualification rate and the machining accuracy of product；
Hydraulic pressure auxiliary hold-down mechanism can be completely secured part and contact with the effective of supporting surface (seat gold three),
Stop the generation of clamping bad phenomenon；
Two workpiece can be laid in each working cell simultaneously, when bridge plate arranges three working cells,
Produce six processing stations, the self-centering rolling clamp of the most this multistation can disposably output more
Finished product, production efficiency is greatly improved, and reduces production cost, opens up for the processing of this type of part
New direction；
Workpiece to be processed only needs clamping once, all of processing content can be completed, therefore keep away
Exempt from the cumulative error that repeated clamping causes, thus improve machining accuracy, also can meet work simultaneously
The high symmetry requirement of part, the qualification rate of product at least improves 10%.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it is clear that
Ground, the accompanying drawing in describing below is only one embodiment of the present of invention, skill common for this area
From the point of view of art personnel, on the premise of not paying creative work, it is also possible to obtain it according to this accompanying drawing
His accompanying drawing.
Fig. 1 is a kind of bearing cap multistation self-centering rolling clamp disclosed in the embodiment of the present invention 1
Perspective view；
Fig. 2 is the main TV structure schematic diagram of Fig. 1；
Fig. 3 is the A-A sectional view in Fig. 2；
Fig. 4 is the B-B sectional view in Fig. 2.
Corresponding component title represented by numeral in figure:
1. bridge plate 2. location-plate 3. clamping seats 4. compressed oil cylinder 5. clamp 6. self-centering oil
Cylinder 61. piston rod 1 piston rod 2 63. jaw 7. hydraulic corner cylinder 8. corner cylinder
Pressing plate 9. pressure head 2 12. gold 3 13. cover plates 2 14. of one 11. gold of 10. gold
16. points of oil clots of cover plate 3 15. mistake proofing block
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention
It is clearly and completely described, it is clear that described embodiment is only the present invention one enforcement
Example rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under not making creative work premise, broadly falls into this
The scope of bright protection.
Below in conjunction with embodiment and detailed description of the invention, the present invention is further detailed explanation.
Embodiment 1.
As Figure 1-Figure 4, a kind of bearing cap multistation self-centering rolling clamp, including bridge plate 1,
Being provided with three working cells on described bridge plate side by side, described working cell includes the first Hydraulic Main successively
Hold-down mechanism, the first hydraulic self-centering mechanism, hydraulic pressure auxiliary hold-down mechanism, the second hydraulic self-centering
Mechanism and the second Hydraulic Main hold-down mechanism；
First Hydraulic Main hold-down mechanism and the second Hydraulic Main hold-down mechanism are identical, the first hydraulic self-centering
Mechanism is identical with the second hydraulic self-centering mechanism；Described first hydraulic self-centering mechanism, described second
The level that hydraulic self-centering mechanism and described hydraulic pressure auxiliary hold-down mechanism may be contained within described bridge plate sets
On the location-plate 2 put.
First Hydraulic Main hold-down mechanism includes on the clamping seats 3 with workpiece shapes adaptation, clamping seats arranged side by side
Three compressed oil cylinders 4 arranged and the seat JINJI structure adaptive with workpiece shapes, described clamping seats leans on
One end of nearly described seat JINJI structure is additionally provided with two (or more than three) for fixing to clamp workpiece
Clamp 5.
First hydraulic self-centering mechanism includes self-centering oil cylinder 6, and described self-centering oil cylinder can by workpiece certainly
Dynamic centering the clamping that is fixed.Described self-centering oil cylinder include piston rod 1, be perpendicular to described
The piston rod 2 62 of piston rod one and the jaw 63 being located at described piston rod two end；Described piston rod
The quantity of two is two, is respectively arranged at the both sides, upper end of described piston rod one, and two piston rods
The axis of two overlaps；The up and down motion of described piston rod one can promote the described piston rod of its both sides
Two drive described jaw side-to-side movements, by workpiece self-centering and be close to described seat gold one and described seat
Gold two.Mated by oat tail groove structure between piston rod 1 and piston rod 2 62, thus realize
The up and down motion of piston rod one is converted into the side-to-side movement of piston rod two.
Hydraulic pressure auxiliary hold-down mechanism includes hydraulic corner cylinder 7, corner cylinder pressing plate 8 and two pressure heads successively
9, described corner cylinder pressing plate is installed on the piston rod upper end of described hydraulic corner cylinder, and described pressure head is located at
The two ends of described corner cylinder pressing plate.
Compressed oil cylinder 4, self-centering oil cylinder 6 and hydraulic corner cylinder 7 are all vertical with bridge plate 1；Wherein liquid
Pressure corner cylinder is flange form hydraulic corner cylinder.
Seat JINJI structure includes seat gold 1, seat gold 2 11 and seat gold 3 12, seat gold one and seat gold two
Being located at one end of location-plate 2, seat gold three is located on location-plate 2 for supporting workpiece.
The cylinder body afterbody of hydraulic corner cylinder 7 is provided with the cover plate 2 13 of sealed cylinder, works as self-centering clamping
After having worked, the piston rod of described hydraulic corner cylinder moves downward, and drives corner cylinder pressing plate 8 He
Pressure head 9 does 90 degree and rotates and be pressed downward against so that workpiece is adjacent to seat gold 3 12.
Hydraulic corner cylinder and self-centering oil cylinder are all assembled into one with location-plate 2；Set on location-plate 2
It is logical that the piston rod one having the piston rod and described self-centering oil cylinder that are available for described hydraulic corner cylinder passes
Hole；Described location-plate is provided with for preventing dust from falling into the cover plate 3 14 of described through hole.
Location-plate 2 upper surface is provided with two mistake proofing blocks 15, can prevent that workpiece is anti-loaded causes locating surface not
Unified, i.e. will be held on mistake proofing block and cannot put in place by clamping after workpiece rotation turnback.
Owing to this fixture all uses built-in oil circuit and oil circuit complicated, therefore design in working cell
Point oil clot 16 realizes the connection of a part of oil circuit；Use both sides fixed form, one side and bridge plate
1 locking, one side is locked with location-plate 2.
The quantity of above-mentioned working cell can also is that other numeral plural, can be according to reality
Need increase and decrease.
Operation principle:
When Hydraulic Station (lathe is outside to be equipped with) provides power source to fixture, fixture performs in order
Relevant action.
Action one, hydraulic self-centering mechanism action: driven by power source, the work of self-centering oil cylinder 6
Filling in one 61 up and down motions drives horizontally disposed piston 2 62 to produce side-to-side movement, then by piston two
62 drive the jaw 63 of one end to move, and make workpiece self-centering and are close to described seat gold one and described seat
Gold two, thus complete workpiece self-centering function.
Action two, hydraulic pressure auxiliary compression action: after self-centering action completes, the liquid that auxiliary compresses
Pressure corner cylinder 7, by power drive, drives corner cylinder pressing plate 8 and pressure head 9 90-degree rotation and is pressed downward against
So that workpiece is adjacent to seat gold 3 12, it is ensured that workpiece completely attaches to supporting surface.
Action three, Hydraulic Main hold-down mechanism action: after workpiece precompressed terminates, the piston of compressed oil cylinder
Bar is produced the complete Clamp blocks with drive clamp 5 side-to-side movement that moves up and down by power drive.
Action four, pre-pressing unclamp: after Hydraulic Main hold-down mechanism clamps completely, hydraulic pressure pwc compacting machine
Under power source drives, corner cylinder pressing plate 8 counter-rotating 90 degree is to unclamp workpiece, for workpiece multiaspect for structure
Space is discharged in processing.
After above-mentioned action is fully completed, fixture coordinates the institute of four axle rotation-indexing table rotating machined workpieces
Need processing content.After machining, in order workpiece is totally released, in order to take out finished product
Workpiece, blank workpiece that clamping is new and then complete fabrication cycles next time.
Compared with prior art, the invention have the advantages that
The present invention uses hydraulic self-centering mechanism to position workpiece to be processed, positional accuracy
Higher, repetitive positioning accuracy is higher, is remarkably improved qualification rate and the machining accuracy of product；
Hydraulic pressure auxiliary hold-down mechanism can be completely secured part and contact with the effective of supporting surface (seat gold three),
Stop the generation of clamping bad phenomenon；
Two workpiece can be laid in each working cell simultaneously, when bridge plate arranges three working cells,
Produce six processing stations, the self-centering rolling clamp of the most this multistation can disposably output more
Finished product, production efficiency is greatly improved, and reduces production cost, opens up for the processing of this type of part
New direction；
Workpiece to be processed only needs clamping once, all of processing content can be completed, therefore keep away
Exempt from the cumulative error that repeated clamping causes, thus improve machining accuracy, also can meet work simultaneously
The high symmetry requirement of part, the qualification rate of product at least improves 10%.
Above-described is only the preferred embodiment of the present invention, it is noted that for this area
For those of ordinary skill, without departing from the concept of the premise of the invention, it is also possible to if making
Dry deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (9)
1. a bearing cap multistation self-centering rolling clamp, including bridge plate, on described bridge plate side by side
It is provided with multiple working cell, it is characterised in that described working cell includes the first Hydraulic Main pressure successively
Tight mechanism, the first hydraulic self-centering mechanism, hydraulic pressure auxiliary hold-down mechanism, the second hydraulic self-centering machine
Structure and the second Hydraulic Main hold-down mechanism；
First Hydraulic Main hold-down mechanism and the second Hydraulic Main hold-down mechanism are identical, the first hydraulic self-centering
Mechanism is identical with the second hydraulic self-centering mechanism；Described first hydraulic self-centering mechanism, described second
The level that hydraulic self-centering mechanism and described hydraulic pressure auxiliary hold-down mechanism may be contained within described bridge plate sets
On the location-plate put；
Described first Hydraulic Main hold-down mechanism includes on the clamping seats with workpiece shapes adaptation, clamping seats
Three compressed oil cylinders being set up in parallel and the seat JINJI structure adaptive with workpiece shapes, on described clamping seats
It is additionally provided with the two or more clamp for fixing to clamp workpiece near one end of described seat JINJI structure；
Described first hydraulic self-centering mechanism includes self-centering oil cylinder, and described self-centering oil cylinder can be by work
Part self-centering the clamping that is fixed；
Described hydraulic pressure auxiliary hold-down mechanism includes hydraulic corner cylinder, corner cylinder pressing plate and two pressures successively
Head, described corner cylinder pressing plate is installed on the piston rod upper end of described hydraulic corner cylinder, and described pressure head sets
Two ends in described corner cylinder pressing plate；
Described compressed oil cylinder, described self-centering oil cylinder and described hydraulic corner cylinder all hang down with described bridge plate
Directly.
A kind of bearing cap multistation self-centering rolling clamp the most according to claim 1, it is special
Levying and be, described seat JINJI structure includes seat gold one, seat gold two and seat gold three, described seat gold one and institute
Stating seat gold two and be located at one end of described location-plate, described seat gold three is located on described location-plate for propping up
Support workpiece.
A kind of bearing cap multistation self-centering rolling clamp the most according to claim 2, it is special
Levying and be, described self-centering oil cylinder includes piston rod one, is perpendicular to the piston rod of described piston rod one
Two and be located at the jaw of described piston rod two end；The quantity of described piston rod two is two, respectively
It is arranged at the both sides, upper end of described piston rod one, and the axis of two piston rods two overlaps；Described
The up and down motion of piston rod one can promote the described piston rod two of its both sides to drive about described jaw and transport
Dynamic, by workpiece self-centering and be close to described seat gold one and described seat gold two.
A kind of bearing cap multistation self-centering rolling clamp the most according to claim 3, it is special
Levy and be, mated by oat tail groove structure between described piston rod one and described piston rod two, thus
Realize the up and down motion of described piston rod one to be converted into the side-to-side movement of described piston rod two.
5. according to a kind of bearing cap multistation self-centering rotating clamp described in any one of claim 2-4
Tool, it is characterised in that the cylinder body afterbody of described hydraulic corner cylinder is provided with the cover plate two of sealed cylinder,
After self-centering clamping has worked, the piston rod of described hydraulic corner cylinder moves downward, and drives institute
State corner cylinder pressing plate and described pressure head does 90 degree and rotates and be pressed downward against so that workpiece is adjacent to seat gold three.
A kind of bearing cap multistation self-centering rolling clamp the most according to claim 5, it is special
Levying and be, described hydraulic corner cylinder and described self-centering oil cylinder are all assembled into one with described location-plate；
Described location-plate is provided with piston rod and the work of described self-centering oil cylinder being available for described hydraulic corner cylinder
The through hole that stopper rod one passes；Described location-plate is provided with for preventing dust from falling into the lid of described through hole
Plate three.
A kind of bearing cap multistation self-centering rolling clamp the most according to claim 6, it is special
Levying and be, described location-plate upper surface is provided with two mistake proofing blocks, can prevent that workpiece is anti-loaded causes location
To be held on mistake proofing block and cannot put in place by clamping after face disunity, i.e. workpiece rotation turnback.
A kind of bearing cap multistation self-centering rolling clamp the most according to claim 7, it is special
Levying and be, be provided with a point oil clot in described working cell, described point of oil clot one side is locked with described bridge plate,
Another side is locked with described location-plate.
A kind of bearing cap multistation self-centering rolling clamp the most according to claim 8, it is special
Levying and be, described hydraulic corner cylinder is flange form hydraulic corner cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410394963.4A CN104227458B (en) | 2014-08-12 | 2014-08-12 | Multi-station self-centering rotary clamp for bearing cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410394963.4A CN104227458B (en) | 2014-08-12 | 2014-08-12 | Multi-station self-centering rotary clamp for bearing cap |
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| CN104227458A CN104227458A (en) | 2014-12-24 |
| CN104227458B true CN104227458B (en) | 2017-01-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014999A (en) * | 2017-06-09 | 2018-12-18 | 德州市金力士液压机具有限公司 | Mechanical-hydraulic double drive precision flatnosed pliers |
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| CN108436542B (en) * | 2018-04-12 | 2019-12-13 | 宁波海天精工股份有限公司 | Hydraulic clamp for machining tile cover |
| CN109352524A (en) * | 2018-11-16 | 2019-02-19 | 芜湖仅机械有限公司 | A kind of five jaw self-centering clamping tools |
| CN109352523B (en) * | 2018-11-16 | 2023-11-07 | 芜湖仅一机械有限公司 | Five-claw self-centering clamping tool with detection function |
| CN109834489B (en) * | 2019-03-28 | 2024-03-19 | 盐城京奇刀具有限公司 | Cam ring processing auxiliary fixtures |
| CN110238419B (en) * | 2019-07-16 | 2024-02-27 | 潍坊威豹机械有限责任公司 | Multi-workpiece clamping self-centering chuck |
| CN110948268A (en) * | 2019-12-13 | 2020-04-03 | 青岛理工大学 | Multistation lathe tool bit milling fixture system of intellectual detection system clamp force |
| CN115122115B (en) * | 2022-06-27 | 2024-03-22 | 东莞溪河精密技术有限公司 | Clamp, clamp assembly and processing equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD104243A1 (en) * | 1972-06-26 | 1974-03-05 | ||
| CN201720713U (en) * | 2010-08-09 | 2011-01-26 | 焦作瑞塞尔盘式制动器有限公司 | Hydraulic clamp for disc brake cylinder processing |
| CN203092200U (en) * | 2013-03-01 | 2013-07-31 | 南京众得利自动化机械有限公司 | Cylindrical self-centering clamping device |
| CN103331660A (en) * | 2013-07-01 | 2013-10-02 | 中国北车集团大连机车车辆有限公司 | Fine processing mold for shoe side of main bearing cap of diesel engine |
| CN203993258U (en) * | 2014-08-12 | 2014-12-10 | 昆山勇翔精密机械有限公司 | A kind of bearing cap multistation self-centering rolling clamp |
-
2014
- 2014-08-12 CN CN201410394963.4A patent/CN104227458B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014999A (en) * | 2017-06-09 | 2018-12-18 | 德州市金力士液压机具有限公司 | Mechanical-hydraulic double drive precision flatnosed pliers |
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| CN104227458A (en) | 2014-12-24 |
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