CN107952980A - A kind of annular thin wall class part Special drill jig with symmetrical boss - Google Patents
A kind of annular thin wall class part Special drill jig with symmetrical boss Download PDFInfo
- Publication number
- CN107952980A CN107952980A CN201711246966.3A CN201711246966A CN107952980A CN 107952980 A CN107952980 A CN 107952980A CN 201711246966 A CN201711246966 A CN 201711246966A CN 107952980 A CN107952980 A CN 107952980A
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- China
- Prior art keywords
- workpiece
- hole
- mounting groove
- model drilling
- boss
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- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 claims abstract description 63
- 238000009434 installation Methods 0.000 claims abstract description 22
- 210000002421 cell wall Anatomy 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 9
- 229910001315 Tool steel Inorganic materials 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 7
- 208000012886 Vertigo Diseases 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
- B23B47/28—Drill jigs for workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/02—Boring templates or bushings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2247/00—Details of drilling jigs
- B23B2247/12—Drilling jigs with means to affix the jig to the workpiece
Abstract
A kind of annular thin wall class part Special drill jig with symmetrical boss, it is related to machinery manufacturing technology field.The present invention is solves the problems, such as that the existing precision in holes drilled through of the annular thin wall class part with symmetrical boss is low, of high cost and low production efficiency.The present invention includes clamp body, model drilling body, two drill bushings and four trip bolts, the upper surface of clamp body is equipped with annular mounting groove, the shape of model drilling body is circular ring shape, the lateral wall of model drilling body is identical with the shape of cell wall on the outside of annular mounting groove, the both sides of model drilling body upper surface are arranged with positioning convex platform, the lower face of positioning convex platform is equipped with installation groove, the upper surface of positioning convex platform is equipped with positioning through hole, the upper end of positioning through hole is fitted with drill bushing, and clamp body is affixed by four trip bolts with model drilling body.The present invention is used for the annular thin wall class drilling part with symmetrical boss.
Description
Technical field
The present invention relates to machinery manufacturing technology field, and in particular to a kind of annular thin wall class part with symmetrical boss is special
Use boring grab.
Background technology
There is a kind of annular thin wall class formation with symmetrical boss in existing machine components, it is all wide in every profession and trade
General application, such workpiece requirement holes drilled through in the plane of part boss.It is that annular is thin due to the special design feature of workpiece
Wall is just deformed by small power, is not easy to clamping processing, so the mode of common process, that is, traditional line drilling is difficult to ensure that
The positional precision of through hole at two.If taking numerical control device to process boss through hole, its drawback is not only clamping workpiece difficulty, and
And production cost is high, the workpiece centering time is long, low production efficiency.In summary, it is necessary to which design specialized fixture bores boss through hole, both
It can guarantee that the bore position precision of workpiece, and can guarantee that the drilling uniformity of workpiece, improve production efficiency, meet batch production
It is required that.
The content of the invention
The present invention is low, of high cost in order to solve the existing precision in holes drilled through of the annular thin wall class part with symmetrical boss
And the problem of low production efficiency, and then propose a kind of annular thin wall class part Special drill jig with symmetrical boss.
The present invention adopts the technical scheme that to solve above-mentioned technical problem：
A kind of annular thin wall class part Special drill jig with symmetrical boss includes clamp body, model drilling body, two brills
Set and four trip bolts, the shape of clamp body is cylinder, is along the circumferential direction laid with the excircle side wall of clamp body
Multiple locating slots, the upper surface of clamp body are equipped with annular mounting groove, the outside cell wall of annular mounting groove and the shape of excircle of workpiece
Shape is identical, and the inner side cell wall of annular mounting groove is identical with the shape of inner hole of workpiece, and the shape of model drilling body is circular ring shape, model drilling body
Lateral wall is identical with the shape of cell wall on the outside of annular mounting groove, and the madial wall of model drilling body is identical with the shape of inner hole of workpiece, drill jig
The both sides of body upper surface are arranged with positioning convex platform, and the lower face of positioning convex platform is equipped with installation groove, the upper end of positioning convex platform
Face is equipped with positioning through hole, and the upper end of positioning through hole is fitted with drill bushing, and clamp body is affixed by four trip bolts with model drilling body.
The beneficial effect that includes compared with prior art of the present invention is：
The present invention can carry out effective positioning and clamping to workpiece, be bored using the annular thin wall class part of clamping of the present invention logical
Hole, its precision are greatly improved, and machining accuracy can reach 0.1mm, overcome the difficult yielding technical barrier of clamping, same to fashionable dress
Folder speed is fast, meets the requirement of parts batch production, and production efficiency can improve more than 70%.Clamp structure is simple, processing week
The advantages of phase is short, production efficiency is high, can be generalized among mechanical processing technique technology.
Brief description of the drawings
Fig. 1 is the front view of workpiece；
Fig. 2 is the bottom view of Fig. 1；
Fig. 3 is view at A-A in Fig. 1；
Fig. 4 is the overall structure diagram of the present invention；
Fig. 5 is the B-B direction sectional view in Fig. 4；
Fig. 6 is the front view of clamp body 1 in the present invention；
Fig. 7 is C-C in Fig. 6 to sectional view；
Fig. 8 is D-D in Fig. 6 to sectional view；
Fig. 9 is the front view of model drilling body 2 in the present invention；
Figure 10 is the left view of Fig. 9；
Figure 11 is the top view of Fig. 9；
Figure 12 is the front view of trip bolt 4 in the present invention；
Figure 13 is the front view of drill bushing 3 in the present invention.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1 to Figure 13, one kind is with symmetrical described in present embodiment
The annular thin wall class part Special drill jig of boss includes clamp body 1,2, two drill bushings 3 of model drilling body and four trip bolts 4,
The shape of clamp body 1 is cylinder, and multiple locating slot 1-1 are along the circumferential direction laid with the excircle side wall of clamp body 1, is pressed from both sides
Specific 1 upper surface is equipped with annular mounting groove 1-2, the outside cell wall of the annular mounting groove 1-2 shape phase cylindrical with workpiece 5
Together, the inner side cell wall of annular mounting groove 1-2 is identical with the shape of 5 endoporus of workpiece, and the shape of model drilling body 2 is circular ring shape, model drilling body 2
Lateral wall it is identical with the shape of cell wall on the outside of annular mounting groove 1-2, the shape phase of the madial wall and 5 endoporus of workpiece of model drilling body 2
Together, the both sides of 2 upper surface of model drilling body are arranged with positioning convex platform 2-1, and the lower face of positioning convex platform 2-1 is equipped with installation groove 2-
The upper surface of 2, positioning convex platform 2-1 are equipped with positioning through hole 2-3, and the upper end of positioning through hole 2-3 is fitted with drill bushing 3, clamp body 1 with
Model drilling body 2 is affixed by four trip bolts 4.
The bottom surface of clamp body 1 is plane, is placed horizontally at easy to clamp body 1 on drilling machine table top, and 1 edge milling of clamp body adds
The multiple locating slot 1-1 of work, the quantity of locating slot 1-1 can be set as four, can be with by installing fastener in locating slot 1-1
Clamp body 1 is fixed on the work top of drilling machine.Workpiece 5 is placed in annular mounting groove 1-2 in processing, annular installation
The inner side cell wall of groove 1-2 is identical with the shape of 5 endoporus of workpiece, and the inner side cell wall of annular mounting groove 1-2 is as positioning datum, then
Model drilling body 2 is installed in the upper end of workpiece 5, model drilling body 2 and workpiece 5 are inlaid in annular mounting groove 1-2, four trip bolts 4
Clamp body 1, workpiece 5 and model drilling body 2 are fixed as one, so as to fulfill effective positioning and clamping to workpiece 5.Model drilling body 2 it is interior
Side wall is identical with the shape of 5 endoporus of workpiece, and the madial wall of model drilling body 2 is as positioning reference plane, the installation groove 2-2 of model drilling body 2
The outside of 5 boss 5-1 of workpiece is sleeved on, the position of positioning through hole 2-3 is identical with the position of through hole to be processed on workpiece 5, positioning
Drill bushing 3 is fitted with the outside of through hole 2-3, drill bushing 3 plays the role of positioning and guiding to drilling tool, ensures the position essence of drilling
Degree.
Embodiment two：Illustrate present embodiment, peace described in present embodiment with reference to Fig. 1 to Fig. 5 and Fig. 9 to Figure 11
The groove width A2 for filling groove 2-2 is identical with the wide B1 of the boss of workpiece 5.Other compositions and connection mode and one phase of embodiment
Together.
It is so designed that to ensure that installation groove 2-2 can be sleeved on the outside of the boss 5-1 of workpiece 5.
Embodiment three：Illustrate present embodiment with reference to Fig. 1 to Figure 11, annular mounting groove 1- described in present embodiment
2 slot bottom is equipped with four tapped through hole 1-3, and the upper surface of model drilling body 2 is equipped with four installation through-hole 2-4, installation through-hole 2-4's
Position is corresponding with the position of tapped through hole 1-3, and the front end of trip bolt 4 passes through installation through-hole 2-4 and spinning is in tapped through hole
In 1-3.Other compositions and connection mode are the same as one or two specific embodiments.
Be so designed that trip bolt 4 sequentially passes through the slot hole 5-2 on installation through-hole 2-4 and workpiece 5, then with tapped through hole
1-3 spinnings together, are achieved in affixed between model drilling body 2, workpiece 5 and clamp body 1.By the slot hole 5-2 of workpiece 5, adjust
The position of whole clamp body 1, workpiece 5 and model drilling body 2, is screwed clamp body 1, workpiece 5 and model drilling body 2 firmly with trip bolt 4.
Embodiment four：Illustrate present embodiment with reference to Fig. 4 to Figure 11, annular mounting groove 1- described in present embodiment
2 slot bottom is arranged with two technique through hole 1-4, and the position of technique through hole 1-4 is corresponding with the position of positioning through hole 2-3.Its
It forms identical with embodiment three with connection mode.
Boss 5-1 is placed in the top of 1 two technique through hole 1-4 of clamp body, the two works at need to drill on workpiece 5 two
Skill through hole 1-4's is relatively large in diameter, and plays the role of avoiding drill bit in drilling part, while also function to the effect of chip removal, technique
Property is good.
Embodiment five：Illustrate present embodiment with reference to Fig. 1 to Figure 11, annular mounting groove 1- described in present embodiment
2 groove depth H3 is more than the sum of the thickness H1 of workpiece 5 and the thickness H5 of model drilling body 2.Other compositions and connection mode and specific implementation
Mode four is identical.
It is so designed that to ensure that workpiece 5 and model drilling body 2 can be inlaid in annular mounting groove 1-2, is easy to implement installation, prevents
Only workpiece 5 and model drilling body 2 play in the horizontal direction, ensures machining accuracy.
Embodiment six：Illustrate present embodiment, peace described in present embodiment with reference to Fig. 1 to Fig. 5 and Fig. 9 to Figure 11
The groove depth H4 for filling groove 2-2 is identical with the high H2 of the boss of workpiece 5.Other compositions and connection mode and embodiment one, two,
Four or five is identical.
Being so designed that can realize that effective positioning to the boss 5-1 of workpiece 5 clamps.
Embodiment seven：Illustrate present embodiment with reference to Fig. 1 to Fig. 5 and Fig. 9 to Figure 11, two described in present embodiment
The distance between cell wall L4 is more than the distance between 5 two outside the boss walls of workpiece L1 on the outside of a installation groove 2-2.Other compositions
It is identical with embodiment six with connection mode.
It is so designed that and is easy to implement the suit of the installation groove 2-2 of model drilling body 2 to the boss 5-1 of workpiece 5.
Embodiment eight：Illustrate present embodiment with reference to Fig. 4, Fig. 5 and Figure 13, drill bushing 3 is described in present embodiment
The drill bushing that tool steel makes.Other compositions and connection mode are identical with embodiment seven.
The material of drill bushing 3 is tool steel, good by heat treatment hardness height, wearability, facilitates the maintenance of model drilling body 2 and adds
Work, drill bushing 3 is replaced after the abrasion of drill bushing 3.
Embodiment nine：Illustrate present embodiment with reference to Fig. 1 to Figure 11 and Figure 13, annular peace described in present embodiment
The inner side cell wall of tankage 1-2 and the endoporus clearance fit of workpiece 5, between the outside cell wall of annular mounting groove 1-2 and the cylindrical of workpiece 5
Gap coordinates, the madial wall of model drilling body 2 and the inner side cell wall clearance fit of annular mounting groove 1-2, lateral wall and the annular of model drilling body 2
The outside cell wall clearance fit of mounting groove 1-2, the lateral wall of drill bushing 3 are interference fitted with the madial wall of positioning through hole 2-3.Other groups
Into identical with embodiment seven or eight with connection mode.
It is so designed that the installation for being easy to implement workpiece 5 and model drilling body 2.
Embodiment ten：Illustrate present embodiment with reference to Fig. 4, Fig. 5 and Figure 13, drill bushing 3 described in present embodiment
The cylindrical circumferential direction of upper end edge is equipped with flange 3-1, and the lower face of flange 3-1 is arranged on the upper surface of model drilling body 2.It is other composition and
Connection mode is identical with embodiment nine.
It is so designed that the installation and removal for being easy to implement drill bushing 3, prevents that drill jig is arrived in the inserting completely of drill bushing 3 in installation process
In the positioning through hole 2-3 of body 2.
Operation principle
1 baseplane of clamp body is placed horizontally on drilling machine table top, adjusts the position of simultaneously geometrical clamp specific 1.In drilling
Workpiece 5 is put into the annular mounting groove 1-2 of clamp body 1, the endoporus of workpiece 5 passes through the middle part of annular mounting groove 1-2, protects
Demonstrate,prove accurate positioning.The endoporus of model drilling body 2 is passed through to the middle part of annular mounting groove 1-2, workpiece pressing 5.Model drilling body 2 and workpiece
5 it is cylindrical all with the excircle orientation of annular mounting groove 1-2.It is pico- to adjust workpiece 5 and model drilling body 2 by the slot hole 5-2 of workpiece 5
Position, clamp body 1, workpiece 5 and model drilling body 2 are screwed in place with trip bolt 4, fix workpiece 5.Drill bit passes through drill bushing 3
Drilling.After drilling, trip bolt 4 everywhere are unclamped, remove model drilling body 2 and workpiece 5 successively, Drilling operation terminates.
Claims (10)
- A kind of 1. annular thin wall class part Special drill jig with symmetrical boss, it is characterised in that：It is described it is a kind of with pair Claim the annular thin wall class part Special drill jig of boss tight including clamp body (1), model drilling body (2), two drill bushings (3) and four Gu screw (4), the shape of clamp body (1) is cylinder, is along the circumferential direction laid with the excircle side wall of clamp body (1) more A locating slot (1-1), the upper surface of clamp body (1) are equipped with annular mounting groove (1-2), the outer side slot of annular mounting groove (1-2) Wall is identical with the shape that workpiece (5) is cylindrical, and the inner side cell wall of annular mounting groove (1-2) is identical with the shape of workpiece (5) endoporus, bores The shape of die body (2) is circular ring shape, and the lateral wall of model drilling body (2) is identical with the shape of cell wall on the outside of annular mounting groove (1-2), bores The madial wall of die body (2) is identical with the shape of workpiece (5) endoporus, and the both sides of model drilling body (2) upper surface are arranged with positioning convex platform (2-1), the lower face of positioning convex platform (2-1) are equipped with installation groove (2-2), and the upper surface of positioning convex platform (2-1), which is equipped with, determines Position through hole (2-3), the upper end of positioning through hole (2-3) are fitted with drill bushing (3), and clamp body (1) passes through four fastenings with model drilling body (2) Screw (4) is affixed.
- 2. a kind of annular thin wall class part Special drill jig with symmetrical boss, its feature exist according to claim 1 In：The groove width (A2) (B1) wide with the boss of workpiece (5) of the installation groove (2-2) is identical.
- 3. a kind of annular thin wall class part Special drill jig with symmetrical boss according to claim 1 or claim 2, its feature It is：The slot bottom of the annular mounting groove (1-2) is equipped with four tapped through holes (1-3), and the upper surface of model drilling body (2) is equipped with four A installation through-hole (2-4), the position of installation through-hole (2-4) is corresponding with the position of tapped through hole (1-3), trip bolt (4) Front end is through installation through-hole (2-4) and spinning is in tapped through hole (1-3).
- 4. a kind of annular thin wall class part Special drill jig with symmetrical boss, its feature exist according to claim 3 In：The slot bottom of the annular mounting groove (1-2) is arranged with two technique through holes (1-4), and the position of technique through hole (1-4) is with determining The position of position through hole (2-3) is corresponding.
- 5. a kind of annular thin wall class part Special drill jig with symmetrical boss, its feature exist according to claim 4 In：The groove depth (H3) of the annular mounting groove (1-2) be more than thickness (H1) and the model drilling body (2) of workpiece (5) thickness (H5) it With.
- 6. according to a kind of annular thin wall class part Special drill jig with symmetrical boss of claim 1,2,4 or 5, its It is characterized in that：The groove depth (H4) of the installation groove (2-2) is identical with the boss high (H2) of workpiece (5).
- 7. a kind of annular thin wall class part Special drill jig with symmetrical boss, its feature exist according to claim 6 In：The distance between cell wall (L4) is more than between (5) two outside the boss walls of workpiece on the outside of described two installation grooves (2-2) Distance (L1).
- 8. a kind of annular thin wall class part Special drill jig with symmetrical boss, its feature exist according to claim 7 In：The drill bushing (3) is the drill bushing that tool steel makes.
- 9. according to a kind of annular thin wall class part Special drill jig with symmetrical boss of claim 7 or 8, its feature It is：The inner side cell wall of the annular mounting groove (1-2) and the endoporus clearance fit of workpiece (5), annular mounting groove (1-2) it is outer The cylindrical clearance fit of side channel wall and workpiece (5), between the madial wall of model drilling body (2) and the inner side cell wall of annular mounting groove (1-2) Gap coordinates, the lateral wall of model drilling body (2) and the outside cell wall clearance fit of annular mounting groove (1-2), the lateral wall of drill bushing (3) with The madial wall interference fit of positioning through hole (2-3).
- 10. a kind of annular thin wall class part Special drill jig with symmetrical boss, its feature exist according to claim 9 In：The cylindrical circumferential direction of upper end edge of the drill bushing (3) is equipped with flange (3-1), and the lower face of flange (3-1) is arranged on model drilling body (2) on upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711246966.3A CN107952980A (en) | 2017-11-30 | 2017-11-30 | A kind of annular thin wall class part Special drill jig with symmetrical boss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711246966.3A CN107952980A (en) | 2017-11-30 | 2017-11-30 | A kind of annular thin wall class part Special drill jig with symmetrical boss |
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| Publication Number | Publication Date |
|---|---|
| CN107952980A true CN107952980A (en) | 2018-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711246966.3A Pending CN107952980A (en) | 2017-11-30 | 2017-11-30 | A kind of annular thin wall class part Special drill jig with symmetrical boss |
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| Country | Link |
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| CN (1) | CN107952980A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248067A (en) * | 2021-11-15 | 2022-03-29 | 航天科工哈尔滨风华有限公司 | Method for processing high-hardness thin-wall stainless steel plate type control surface |
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|---|---|---|---|---|
| CN202212619U (en) * | 2011-05-25 | 2012-05-09 | 氟络塞尔特种阀门(苏州)有限公司 | Hole drilling die |
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| CN203236012U (en) * | 2013-03-16 | 2013-10-16 | 中煤张家口煤矿机械有限责任公司 | Positioning and clamping device for drilling annular plate type workpiece |
| CN204053021U (en) * | 2014-09-11 | 2014-12-31 | 山东科大机电科技股份有限公司 | A kind of round-disk shape workpiece Quick drilling tool |
| CN205166455U (en) * | 2015-11-27 | 2016-04-20 | 上海槎南工贸发展有限公司 | Dish type external member boring grab |
| CN106735452A (en) * | 2016-12-16 | 2017-05-31 | 襄阳襄车铁达缸套铸业有限公司 | A kind of cylinder jacket end face porous processing frock |
| CN107297525A (en) * | 2016-04-14 | 2017-10-27 | 襄阳奇竞特机电制造有限责任公司 | A kind of motor flange drill jig |
| CN207642355U (en) * | 2017-11-30 | 2018-07-24 | 哈尔滨建成集团有限公司 | A kind of annular thin wall class part Special drill jig with symmetrical boss |
-
2017
- 2017-11-30 CN CN201711246966.3A patent/CN107952980A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202212619U (en) * | 2011-05-25 | 2012-05-09 | 氟络塞尔特种阀门(苏州)有限公司 | Hole drilling die |
| CN202701457U (en) * | 2012-07-03 | 2013-01-30 | 重庆神箭汽车传动件有限责任公司 | Disc-type component drilling tool |
| CN203236012U (en) * | 2013-03-16 | 2013-10-16 | 中煤张家口煤矿机械有限责任公司 | Positioning and clamping device for drilling annular plate type workpiece |
| CN204053021U (en) * | 2014-09-11 | 2014-12-31 | 山东科大机电科技股份有限公司 | A kind of round-disk shape workpiece Quick drilling tool |
| CN205166455U (en) * | 2015-11-27 | 2016-04-20 | 上海槎南工贸发展有限公司 | Dish type external member boring grab |
| CN107297525A (en) * | 2016-04-14 | 2017-10-27 | 襄阳奇竞特机电制造有限责任公司 | A kind of motor flange drill jig |
| CN106735452A (en) * | 2016-12-16 | 2017-05-31 | 襄阳襄车铁达缸套铸业有限公司 | A kind of cylinder jacket end face porous processing frock |
| CN207642355U (en) * | 2017-11-30 | 2018-07-24 | 哈尔滨建成集团有限公司 | A kind of annular thin wall class part Special drill jig with symmetrical boss |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248067A (en) * | 2021-11-15 | 2022-03-29 | 航天科工哈尔滨风华有限公司 | Method for processing high-hardness thin-wall stainless steel plate type control surface |
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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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 150030 Heilongjiang Province, Harbin city Xiangfang District South Road No. 65 Applicant after: China Ordnance Industry Group Aviation Ammunition Research Institute Co.,Ltd. Address before: 150030 Heilongjiang Province, Harbin city Xiangfang District South Road No. 65 Applicant before: HARBIN JIANCHENG GROUP Co.,Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180424 |