CN105290815B - A kind of CNC processes the built-up jig and clamping method of inclined-plane inclined hole - Google Patents
A kind of CNC processes the built-up jig and clamping method of inclined-plane inclined hole Download PDFInfo
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- CN105290815B CN105290815B CN201510857337.9A CN201510857337A CN105290815B CN 105290815 B CN105290815 B CN 105290815B CN 201510857337 A CN201510857337 A CN 201510857337A CN 105290815 B CN105290815 B CN 105290815B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 29
- 241000826860 Trapezium Species 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012958 reprocessing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
A kind of CNC processes the built-up jig of inclined-plane inclined hole, including fixture A, fixture B and fixture C, fixture A is provided with main clamp plate, main clamp plate is integrally a cuboid, thereafter side center section convexes to form boss backward, left fixed cell includes the first positioning disk and the first fixed disk, and right fixed cell includes the second positioning disk and the second fixed disk；Fixture B is provided with main clamp plate, and main clamp plate seen from above is a pentagon, and main clamp plate is provided with about two set screws for running through main clamp plate, and the upper surface of main clamp plate is respectively equipped with left positioning unit and right positioning unit close to the position of hypotenuse；Fixture C is identical with fixture B structure, and it is a right-angled trapezium that simply main clamp plate is seen from above.The present invention have adjusted global design and the positioning method of fixture, constitutes modular fixture using three fixtures, takes incremental machining accuracy method, surplus is left to processing, control the morphotropism of workpiece, improve machining accuracy and production efficiency.
Description
Technical field
The present invention relates to built-up jig and the clamping side of mechanical manufacturing field, more particularly to a kind of CNC processing inclined-plane inclined holes
Method.
Background technology
Fixture pattern earlier, mainly by two width movable clamp ports and determines jaw and constitutes, pattern is simpler.What the type was present lacks
Fall into and be：The deformation of workpiece hole is easily caused during processing, positioning is difficult, machining accuracy is influenceed, it is difficult to ensure that workpiece slope during processing
Angle and inclined hole precision, three width fixtures will lean on the dismounting of No. three lathes and clamping to process respectively, add the dress of personnel
Unload the time and have impact on the process time of product.
The content of the invention
The present invention is intended to provide a kind of CNC processing inclined-plane inclined holes of perpendicularity, axiality and cylindricity for ensureing product
Built-up jig and clamping method.
To realize above-mentioned technical purpose, the present invention uses following technical scheme, a kind of combination folder of CNC processing inclined-plane inclined hole
Tool, the built-up jig includes fixture A, fixture B and fixture C, and wherein fixture A is provided with main clamp plate, and main clamp plate is integrally one
Individual cuboid, thereafter side center section convex to form boss backward, the upper and lower part that main clamp plate is located at boss is respectively provided with
Before and after two run through main clamp plate set screw, up and down set screw correspond to respectively, be in the same center line, boss it is upper
Surface is respectively equipped with left positioning unit and right positioning unit, the two positioning units respectively with the set screw in left side and right side
The center line of set screw is consistent, and left positioning unit is in same horizontal line with right positioning unit, and left fixed cell includes
First positioning disk and the first fixed disk, the first fixed disk are linked together by M12 fixed screws with the first positioning disk, and M12 is solid
Determine above and below screw through the first fixed disk and the first positioning disk until penetrating main clamp plate, right fixed cell includes the second positioning disk
With the second fixed disk, the second fixed disk is linked together by M12 fixed screws with the second positioning disk；
Fixture B is provided with main clamp plate, and main clamp plate seen from above is a pentagon, and pentagon only has a hypotenuse,
Main clamp plate is provided with about two set screws for running through main clamp plate, and the upper surface of main clamp plate is close to the position of hypotenuse point
Not She You left positioning unit and right positioning unit, left positioning unit and right positioning unit be not in same horizontal line, right fixation
Unit includes the first positioning disk and the first fixed disk, and the first fixed disk is connected to one by M12 fixed screws and the first positioning disk
Rise, through the first fixed disk and the first positioning disk until penetrate main clamp plate above and below M12 fixed screws, right fixed cell includes the
Two positioning disks and the second fixed disk, the second fixed disk are linked together by M12 fixed screws with the second positioning disk；
Fixture C is provided with main clamp plate, and main clamp plate seen from above is a right-angled trapezium, the inclination angle of fixture C hypotenuses
The difference of degree and fixture B, main clamp plate is provided with about two set screws for running through main clamp plate, the upper surface of main clamp plate
Position close to hypotenuse is respectively equipped with left positioning unit and right positioning unit, and left positioning unit is not at same with right positioning unit
On horizontal line, right fixed cell includes the first positioning disk and the first fixed disk, and the first fixed disk passes through M12 fixed screws and first
Positioning disk links together, right through the first fixed disk and the first positioning disk up to penetrating main clamp plate above and below M12 fixed screws
Fixed cell includes the second positioning disk and the second fixed disk, and the second fixed disk is connected by M12 fixed screws with the second positioning disk
Together.
CNC in the present invention processes the clamping method of inclined-plane inclined hole, it is characterised in that comprise the following steps：
1）Fixture A, fixture B and fixture C are installed on lathe by the set screw through main clamp plate, fixture B and
Fixture C has an inclined-plane, can cooperate and retain the space of processing to lathe；
2）Preparatory processing, the two ends of workpiece are fixed on fixture A by fixture A two fixed cells, first loose respectively
Fixture A the first fixed disk and the second fixed disk is opened, there are the hole of the first positioning disk of correspondence and the second positioning disk, work in the two ends of workpiece
Part just screws on the first fixed disk and the second fixed disk after setting up, lathe can drive fixture to spin upside down and left rotation and right rotation, right
Workpiece carries out multiaspect processing；
3）Inclined-plane inclined hole processing, completes step 2）Afterwards, fixture B is put the workpiece in, the seen from above of fixture B is one five
Side shape, pentagon only has a hypotenuse, and the upper surface of main clamp plate is respectively equipped with left positioning unit and the right side close to the position of hypotenuse
Positioning unit, first unclamps the first fixed disk and the second fixed disk close to fixture B hypotenuses respectively, and there is correspondence first at the two ends of workpiece
The hole of positioning disk and the second positioning disk, workpiece just screws on the first fixed disk and the second fixed disk after setting up, hypotenuse alignment machine
Inclined hole can be equally processed after the convenient processing inclined-plane of bed, conversion angle；
4）Inclined-plane inclined hole reprocessing, completes step 3）Afterwards, fixture C is put the workpiece in, the seen from above of fixture C is one
Right-angled trapezium, the upper surface of main clamp plate is respectively equipped with left positioning unit and right positioning unit close to the position of hypotenuse, first distinguishes
The first fixed disk and the second fixed disk close to fixture C hypotenuses are unclamped, the two ends of workpiece have the first positioning disk of correspondence and second to determine
The hole of position disk, workpiece just screws on the first fixed disk and the second fixed disk, angle of inclination and the fixture B of fixture C hypotenuses after setting up
Difference, the hypotenuse alignment lathe be conveniently processed further inclined-plane, while being also convenient for carrying out another in the inclined hole processed
The finishing of angle.
In order to solve more early fixture cause work pieces process it is yielding and be difficult positioning, machining accuracy it is unstable, the present invention
Global design and the positioning method of fixture are have adjusted, modular fixture is constituted using three fixtures, and the process of processing is divided into
Multi-section, takes incremental machining accuracy method, surplus is left to processing, control the morphotropism of workpiece, in processing
Three groups of processing can be carried out simultaneously by the way of similar streamline, three process is taken while circulating on same a machine tool and same
Shi Jiagong, has saved the wait and circulation of product per pass inter process, new installation way ensure that well inclined-plane and inclined hole plus
Work required precision, improves machining accuracy and production efficiency.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is fixture A structural representation；
Fig. 2 is fixture A top view；
Fig. 3 is fixture B structural representation；
Fig. 4 is fixture B top view；
Fig. 5 is fixture C structural representation；
Fig. 6 is fixture C top view.
In figure：1st, main clamp plate；2nd, boss；3rd, set screw；4th, the first fixed disk；5th, M12 fixed screws；6th, second determines
Position disk；7th, the second fixed disk；8th, the first positioning disk；9th, main clamp plate；10th, set screw；11st, the first positioning disk；12nd, first consolidates
Price fixing；13rd, M12 fixed screws；14th, the second positioning disk；15th, the second fixed disk；16th, main clamp plate；17th, set screw；18th,
One positioning disk；19th, the first fixed disk；20th, M12 fixed screws；21st, the second positioning disk；22nd, the second fixed disk.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, unless otherwise prescribed with limit, it is necessary to explanation, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be mechanically connect or electrical connection or the connection of two element internals, can
To be to be joined directly together, it can also be indirectly connected to by intermediary.For the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
The built-up jig that CNC according to embodiments of the present invention processes inclined-plane inclined hole is described referring to Fig. 1 to Fig. 6.It is a kind of
CNC processes the built-up jig of inclined-plane inclined hole, and the built-up jig includes fixture A, fixture B and fixture C, and wherein fixture A is provided with folder
Has mainboard 1, it is a cuboid that main clamp plate 1 is overall, and side center section convexes to form boss 2, main clamp plate 1 backward thereafter
The set screw 3 for running through main clamp plate 1 before and after two is respectively provided with positioned at the upper and lower part of boss 2, set screw 3 is distinguished up and down
Correspondence, is in the same center line, the upper surface of boss 2 is respectively equipped with left positioning unit and right positioning unit, the two positioning
Unit is consistent with the center line of the set screw 3 in left side and the set screw 3 on right side respectively, and left positioning unit and right positioning are single
Member is in same horizontal line, and left fixed cell includes the first positioning disk 8 and the first fixed disk 4, and the first fixed disk 4 passes through M12
Fixed screw 5 links together with the first positioning disk 8, and M12 fixed screws run through the first fixed disk 4 and the first positioning disk 8 about 5
Until penetrating main clamp plate 1, right fixed cell includes the second positioning disk 6 and the second fixed disk 7, and the second fixed disk 7 is solid by M12
Determine screw 5 to link together with the second positioning disk 6；
Fixture B is provided with main clamp plate 9, and main clamp plate 9 seen from above is a pentagon, and pentagon only has one tiltedly
Side, main clamp plate 9 is provided with about two set screws 10 for running through main clamp plate, and the upper surface of main clamp plate 9 is close to hypotenuse
Position be respectively equipped with left positioning unit and right positioning unit, left positioning unit is not at same horizontal line with right positioning unit
On, right fixed cell includes the first positioning disk 10 and the first fixed disk 11, and the first fixed disk 11 passes through M12 fixed screws 13 and the
One positioning disk 10 links together, and M12 fixed screws are about 13 through the first fixed disk 11 and the first positioning disk 10 until penetrating
Main clamp plate 9, right fixed cell includes the second positioning disk 14 and the second fixed disk 15, and the second fixed disk 15 fixes spiral shell by M12
Silk 13 links together with the second positioning disk 14；
Fixture C is provided with main clamp plate 16, it is a right-angled trapezium that main clamp plate 16 is seen from above, and fixture C hypotenuses incline
The difference of rake angle and fixture B, main clamp plate 16 is provided with about two set screws 17 for running through main clamp plate, main clamp plate
16 upper surface is respectively equipped with left positioning unit and right positioning unit, left positioning unit and right positioning unit close to the position of hypotenuse
It is not in same horizontal line, right fixed cell includes the first positioning disk 18 and the first fixed disk 19, the first fixed disk 19 passes through
M12 fixed screws 20 link together with the first positioning disk 18, and M12 fixed screws run through the first fixed disk 19 and first about 20
Positioning disk 18 is until penetrate main clamp plate 16, and right fixed cell includes the second positioning disk 21 and the second fixed disk 22, and second fixes
Disk 22 is linked together by M12 fixed screws 20 with the second positioning disk 21.
CNC in the present invention processes the clamping method of inclined-plane inclined hole, it is characterised in that comprise the following steps：
1）Fixture A, fixture B and fixture C are installed on lathe by the set screw through main clamp plate, fixture B and
Fixture C has an inclined-plane, can cooperate and retain the space of processing to lathe；
2）Preparatory processing, the two ends of workpiece are fixed on fixture A by fixture A two fixed cells, first loose respectively
Open fixture A the first fixed disk 4 and the second fixed disk 7, there are the first positioning disk 8 of correspondence and the second positioning disk 6 in the two ends of workpiece
Hole, workpiece just screws on the first fixed disk 4 and the second fixed disk 7 after setting up, lathe can drive fixture to spin upside down and left and right
Rotation, multiaspect processing is carried out to workpiece；
3）Inclined-plane inclined hole processing, completes step 2）Afterwards, fixture B is put the workpiece in, the seen from above of fixture B is one five
Side shape, pentagon only has a hypotenuse, and the upper surface of main clamp plate 9 is respectively equipped with left positioning unit and the right side close to the position of hypotenuse
Positioning unit, first unclamps the first fixed disk 12 and the second fixed disk 15 close to fixture B hypotenuses respectively, and there is correspondence at the two ends of workpiece
The hole of first positioning disk 11 and the second positioning disk 14, workpiece just screws on the first fixed disk 12 and the second fixed disk 15 after setting up,
Inclined hole can be equally processed after the convenient processing inclined-plane of hypotenuse alignment lathe, conversion angle；
4）Inclined-plane inclined hole reprocessing, completes step 3）Afterwards, fixture C is put the workpiece in, the seen from above of fixture C is one
Right-angled trapezium, the upper surface of main clamp plate 16 is respectively equipped with left positioning unit and right positioning unit close to the position of hypotenuse, first divides
Not Song Kai close to fixture C hypotenuses the first fixed disk 19 and the second fixed disk 22, there is the first positioning disk 18 of correspondence at the two ends of workpiece
With the hole of the second positioning disk 21, workpiece just screws on the first fixed disk 19 and the second fixed disk 22 after setting up, and fixture C hypotenuses incline
The difference of rake angle and fixture B, hypotenuse alignment lathe is conveniently processed further inclined-plane, while being also convenient in the inclined hole processed
The interior finishing for carrying out another angle.
In order to solve more early fixture cause work pieces process it is yielding and be difficult positioning, machining accuracy it is unstable, the present invention
Global design and the positioning method of fixture are have adjusted, modular fixture is constituted using three fixtures, and the process of processing is divided into
Multi-section, takes incremental machining accuracy method, surplus is left to processing, control the morphotropism of workpiece, in processing
Three groups of processing can be carried out simultaneously by the way of similar streamline, three process is taken while circulating on same a machine tool and same
Shi Jiagong, has saved the wait and circulation of product per pass inter process, new installation way ensure that well inclined-plane and inclined hole plus
Work required precision, improves machining accuracy and production efficiency.
In the description of this specification, the description meaning of reference term " one embodiment ", " example " or " some examples " etc.
Refer at least one reality that the present invention is contained in reference to specific features, structure, material or the feature that the embodiment or example are described
Apply in example or example.In this manual, identical embodiment is not necessarily referring to the schematic representation of above-mentioned term or shown
Example.Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example
Combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (2)
1. a kind of CNC processes the built-up jig of inclined-plane inclined hole, it is characterised in that the built-up jig include fixture A, fixture B and
Fixture C, wherein fixture A are provided with main clamp plate, and main clamp plate is integrally a cuboid, and side center section is raised backward thereafter
Boss is formed, the upper and lower part that main clamp plate is located at boss is respectively provided with the set screw for running through main clamp plate before and after two, on
Lower set screw is corresponded to respectively, is in the same center line, and the upper surface of boss is respectively equipped with left positioning unit and right positioning list
Member, the two positioning units are consistent with the center line of the set screw in left side and the set screw on right side respectively, and left positioning is single
First to be in right positioning unit in same horizontal line, left positioning unit includes the first positioning disk and the first fixed disk, and first fixes
Disk is linked together by M12 fixed screws with the first positioning disk, fixed through the first fixed disk and first above and below M12 fixed screws
Position disk is until penetrate main clamp plate, and right positioning unit includes the second positioning disk and the second fixed disk, and the second fixed disk is solid by M12
Determine screw to link together with the second positioning disk；
Fixture B is provided with main clamp plate, and main clamp plate seen from above is a pentagon, and pentagon only has a hypotenuse, fixture
Mainboard is provided with about two set screws for running through main clamp plate, and the upper surface of main clamp plate is set respectively close to the position of hypotenuse
There are left positioning unit and right positioning unit, left positioning unit is not in same horizontal line with right positioning unit, left positioning unit
Including the first positioning disk and the first fixed disk, the first fixed disk is linked together by M12 fixed screws with the first positioning disk,
Through the first fixed disk and the first positioning disk until penetrating main clamp plate above and below M12 fixed screws, right positioning unit includes second
Positioning disk and the second fixed disk, the second fixed disk are linked together by M12 fixed screws with the second positioning disk；
Fixture C is provided with main clamp plate, and it is a right-angled trapezium that main clamp plate is seen from above, the angle of inclination of fixture C hypotenuses with
Fixture B difference, main clamp plate is provided with about two set screws for running through main clamp plate, and the upper surface of main clamp plate is close
The position of hypotenuse is respectively equipped with left positioning unit and right positioning unit, and left positioning unit is not at same level with right positioning unit
On line, left positioning unit includes the first positioning disk and the first fixed disk, and the first fixed disk is positioned by M12 fixed screws and first
Disk links together, through the first fixed disk and the first positioning disk until penetrating main clamp plate, right positioning above and below M12 fixed screws
Unit includes the second positioning disk and the second fixed disk, and the second fixed disk is connected to one by M12 fixed screws and the second positioning disk
Rise.
2. a kind of clamping method for the built-up jig that inclined-plane inclined hole is processed using CNC as claimed in claim 1, its feature is existed
In comprising the following steps：
1）Fixture A, fixture B and fixture C are installed on lathe by the set screw through main clamp plate, fixture B and fixture C
There is an inclined-plane, can cooperate and retain the space of processing to lathe；
2）Preparatory processing, the two ends of workpiece are fixed on fixture A by fixture A two positioning units, and folder is first unclamped respectively
Have A the first fixed disk and the second fixed disk, there are the hole of the first positioning disk of correspondence and the second positioning disk, workpiece peace in the two ends of workpiece
The first fixed disk and the second fixed disk are just screwed on after up, lathe can drive fixture to spin upside down and left rotation and right rotation, to workpiece
Carry out multiaspect processing；
3）Inclined-plane inclined hole processing, completes step 2）Afterwards, fixture B is put the workpiece in, the seen from above of fixture B is five sides
Shape, pentagon only has a hypotenuse, and the upper surface of main clamp plate is respectively equipped with left positioning unit close to the position of hypotenuse and the right side is fixed
Bit location, first unclamps the first fixed disk and the second fixed disk close to fixture B hypotenuses respectively, and the two ends of workpiece have correspondence first to determine
The hole of position disk and the second positioning disk, workpiece just screws on the first fixed disk and the second fixed disk after setting up, hypotenuse alignment lathe
Inclined hole can be equally processed after convenient processing inclined-plane, conversion angle；
4）Inclined-plane inclined hole reprocessing, completes step 3）Afterwards, fixture C is put the workpiece in, the seen from above of fixture C is a right angle
Trapezoidal, the upper surface of main clamp plate is respectively equipped with left positioning unit and right positioning unit close to the position of hypotenuse, first unclamps respectively
Close to the first fixed disk and the second fixed disk of fixture C hypotenuses, there are the first positioning disk of correspondence and the second positioning disk in the two ends of workpiece
Hole, workpiece just screws on the first fixed disk and the second fixed disk after setting up, the angles of inclination of fixture C hypotenuses with fixture B not
Together, hypotenuse alignment lathe is conveniently processed further inclined-plane, while being also convenient in the inclined hole processed carrying out another angle
Finishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510857337.9A CN105290815B (en) | 2015-11-30 | 2015-11-30 | A kind of CNC processes the built-up jig and clamping method of inclined-plane inclined hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510857337.9A CN105290815B (en) | 2015-11-30 | 2015-11-30 | A kind of CNC processes the built-up jig and clamping method of inclined-plane inclined hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105290815A CN105290815A (en) | 2016-02-03 |
| CN105290815B true CN105290815B (en) | 2017-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510857337.9A Active CN105290815B (en) | 2015-11-30 | 2015-11-30 | A kind of CNC processes the built-up jig and clamping method of inclined-plane inclined hole |
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| CN (1) | CN105290815B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19617642A1 (en) * | 1996-05-02 | 1997-11-13 | Ttk Kunststoff Tech Gmbh | CNC machine tool holder |
| CN101786238A (en) * | 2010-01-18 | 2010-07-28 | 无锡鹰贝精密轴承有限公司 | Milling modular fixture |
| CN202607268U (en) * | 2012-04-10 | 2012-12-19 | 苏州唐峰金属制品有限公司 | Fixture for machining oil holes on bearing outer rings |
| CN202726637U (en) * | 2012-08-23 | 2013-02-13 | 浙江震环数控机床有限公司 | Rotatable power head |
| CN103949909B (en) * | 2014-05-12 | 2016-07-06 | 强龙科技（苏州）有限公司 | A kind of CNC processes spherical parts built-up jig and clamping method |
| CN205147846U (en) * | 2015-11-30 | 2016-04-13 | 强龙科技（苏州）有限公司 | Modular fixture of CNC processing inclined plane inclined hole |
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Address after: No. 38 Taiping Jujin Road, Xiangcheng District, Suzhou City, Jiangsu Province, 215137 Patentee after: Jieweite Intelligent Manufacturing (Suzhou) Co.,Ltd. Country or region after: China Address before: 215137 Dajun science and technology entrepreneurship Park, No. 68, Taiping Jujin Road, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: QIANGLONG TECHNOLOGY (SUZHOU) CO.,LTD. Country or region before: China |