CN106216750A - A kind of helical deep hole annular groove cutter - Google Patents
A kind of helical deep hole annular groove cutter Download PDFInfo
- Publication number
- CN106216750A CN106216750A CN201610791744.9A CN201610791744A CN106216750A CN 106216750 A CN106216750 A CN 106216750A CN 201610791744 A CN201610791744 A CN 201610791744A CN 106216750 A CN106216750 A CN 106216750A
- Authority
- CN
- China
- Prior art keywords
- cutter
- annular groove
- cutter head
- deep hole
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/34—Milling grooves of other forms, e.g. circumferential
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/006—Details of the milling cutter body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
- B23C2210/0485—Helix angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/40—Flutes, i.e. chip conveying grooves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses a kind of helical deep hole annular groove cutter, including tubular cutter hub, one end of tubular cutter hub is provided with handle of a knife, the other end is provided with cutter head, the end of cutter head is provided with blade, and the lateral wall of cutter head is provided with spiral discharging groove, and the inwall of tubular cutter hub is provided with at least one lead channel.Deep hole annular groove can be processed by the rotation of cutter head, owing to the inwall of tubular cutter hub is provided with the lead channel entered for coolant, chip can be discharged under the extruding of coolant from spiral discharging groove, therefore can indirectly improve the machining accuracy of deep hole annular groove in time by chip discharge.Wherein can accurately control the width of blade, get final product machine-shaping by a feed, therefore production efficiency is higher.
Description
Technical field
The present invention relates to cutter field, particularly relate to a kind of helical deep hole annular groove cutter.
Background technology
In space equipment and civil equipment field, often use deep hole annular groove class part as described in Figure 1, at annular groove
In typically require the corresponding parts of assembling, therefore the inner prop cylindrical in annular groove and annular groove internal control all have tolerance and precision to want
Ask.Traditional processing mode of deep hole annular groove is mainly included two kinds:
1, symmetrical casting, after utilizing autogenous grinding cutting knife slightly to cut, then carries out boring to reach tolerance；
2, non-revolved body part, in the place-centric perforating required and mark annular groove roughing line, slightly bores woollen along annular groove
After, utilize machining center milling out annular groove and staying certain surplus, finally carry out electricity and wear polish to reach tolerance.
The above processing mode not only process-cycle is long, and cost is high, and cutting region cooling difficulty, tool wear is fast, scraps
Rate is high.
Therefore, the most effectively process the deep hole annular groove on part, be those skilled in the art be badly in need of solve technology
Problem.
Summary of the invention
It is an object of the invention to provide a kind of helical deep hole annular groove cutter, can effectively process deep hole annular groove, Er Qiejia
Work is convenient, and production efficiency is high.
For solving above-mentioned technical problem, the technical scheme is that
A kind of helical deep hole annular groove cutter, including tubular cutter hub, one end of described tubular cutter hub is provided with handle of a knife, and the other end is provided with
Cutter head, described cutter head is provided with blade, and the lateral wall of described cutter head is provided with spiral discharging groove, on the inwall of described tubular cutter hub
It is provided with at least one lead channel.
Preferably, described cutter head is provided with blade described at least two.
Preferably, described blade is provided with the cylindrical section for machining and shaping.
Preferably, described lead channel be cross section be semicircular lead channel.
Preferably, the medial wall of described cutter head is or/and lateral wall is tapered along described cutter head to the axial direction of described handle of a knife.
Preferably, the medial wall of described cutter head is or/and lateral wall is inverted cone surface.
Preferably, when part to be processed is steel and iron parts, the helical angle of described spiral discharging groove is 15 °～20 °；When being added
When work part is non-ferrous metal pieces, the helical angle of described spiral discharging groove is 25 °～30 °, and the degree of depth of described spiral discharging groove is
0.2～0.3 times of described cutter head sidewall times thickness, the axial length of described spiral discharging groove is recessed more than needing the annular processed
The degree of depth 15～20mm of groove, its numerical value all includes endpoint value.
Preferably, when the sidewall thickness of described cutter head is not less than 2mm, the radius of described lead channel is 1～1.5mm；When
When the sidewall thickness of described cutter head is not more than 1.5mm, the radius of described lead channel is 0.5～1mm, when there being two described lead channel
Time, described lead channel is symmetrical arranged, and the angle of the end of described lead channel and described blade is 45 °.
Preferably, when the thickness of described cutter head is not less than 2mm, the groove depth of described blade is 2～2.5mm, when described cutter
When the thickness of head is not more than 1mm, the groove depth of described blade is 1～1.5mm；
When part to be processed is steel and iron parts, the anterior angle of described blade is 6 °～8 °, when part to be processed is non-ferrous metal
During part, the anterior angle of described blade is 3 °～5 °；
When part to be processed part is steel and iron parts, the first relief angle of described blade is 8 °～10 °, when part to be processed is for having
During non-ferrous metal, the first relief angle of described blade is 12 °～15 °, and the second relief angle of described blade is more than described first relief angle, described
Angle between bottom land and the radial direction of described cutter head of blade is 25 °.
Preferably, the diameter of described handle of a knife is more than the diameter of described cutter head.
Compared with prior art, technique scheme has the advantage that
A kind of helical deep hole annular groove cutter provided by the present invention, including tubular cutter hub, one end of tubular cutter hub is provided with handle of a knife,
The other end is provided with cutter head, and the end of cutter head is provided with blade, and the lateral wall of cutter head is provided with spiral discharging groove, the inwall of tubular cutter hub
It is provided with at least one lead channel.Deep hole annular groove can be processed, owing to setting on the inwall of tubular cutter hub by the rotation of cutter head
Having the lead channel entered for coolant, chip can be discharged under the extruding of coolant from spiral discharging groove, the most permissible
In time by chip discharge, indirectly improve the machining accuracy of deep hole annular groove.Wherein can accurately control the width of blade, logical
Crossing a feed and get final product machine-shaping, therefore production efficiency is higher.
Accompanying drawing explanation
In order to be illustrated more clearly that the present invention or technical scheme of the prior art, below will be to embodiment or prior art
In description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is some of the present invention
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to attached according to these
Figure obtains other accompanying drawing.
Fig. 1 is the structural representation of a kind of part with deep hole annular groove of the prior art；
The main TV structure signal of a kind of helical deep hole annular groove cutter that Fig. 2 is provided by a kind of detailed description of the invention of the present invention
Figure；
Fig. 3 is that in Fig. 2, the master of helical deep hole annular groove cutter regards sectional structure schematic diagram；
Fig. 4 is the left view structural representation of helical deep hole annular groove cutter in Fig. 2；
Fig. 5 is the B direction structure schematic diagram in Fig. 4.
Reference is as follows:
1 is deep hole annular groove, and 2 is handle of a knife, and 21 is lead channel, and 3 is cutter head, and 31 is cylindrical section, and 32 is blade, and 33 go out for spiral
Hopper.
Detailed description of the invention
The most as described in the background section, current tool sharpening deep hole annular groove not only efficiency is low, and precision is relatively low, report
Useless rate is high.
On the basis of the studies above, embodiments provide a kind of helical deep hole annular groove cutter, by cutter head
Rotation can process deep hole annular groove, and owing to the inwall of tubular cutter hub is provided with the lead channel entered for coolant, chip is i.e.
Can discharge from spiral discharging groove under the extruding of coolant, therefore indirectly can improve deep in time by chip discharge
The machining accuracy of orifice ring groove.Wherein can accurately control the width of blade, get final product machine-shaping by a feed, therefore produce
Efficiency is higher.
Understandable, below in conjunction with the accompanying drawings to this in order to enable the above-mentioned purpose of the present invention, feature and advantage to become apparent from
Bright detailed description of the invention is described in detail.
Elaborate detail in the following description so that fully understanding the present invention.But the present invention can with multiple not
Being same as alternate manner described here to implement, those skilled in the art can do class in the case of intension of the present invention
Like promoting.Therefore the present invention is not limited by following public detailed description of the invention.
Refer to the structural representation that Fig. 1-Fig. 5, Fig. 1 are a kind of part with deep hole annular groove of the prior art；Fig. 2
Main TV structure schematic diagram by a kind of helical deep hole annular groove cutter that a kind of detailed description of the invention of the present invention is provided；Fig. 3 is in Fig. 2
The master of helical deep hole annular groove cutter regards sectional structure schematic diagram；Fig. 4 is the left view structural representation of helical deep hole annular groove cutter in Fig. 2；
Fig. 5 is the B direction structure schematic diagram in Fig. 4.
A kind of detailed description of the invention of the present invention provides a kind of helical deep hole annular groove cutter, including tubular cutter hub, tubular cutter
One end of body is provided with handle of a knife 2, and the other end is provided with cutter head 3, and the end of cutter head 3 is provided with blade 32, and the lateral wall of cutter head 3 is provided with spiral shell
Screwing out hopper 33, the inwall of tubular cutter hub is provided with at least one lead channel 21.
In the present embodiment, deep hole annular groove 1 as shown in Figure 1 can be processed by the rotation of cutter head 3, due to tubular cutter
The inwall of body is provided with the lead channel 21 entered for coolant, and chip can be from spiral discharging groove 33 under the extruding of coolant
Middle discharge, therefore can improve the machining accuracy of deep hole annular groove 1 in time by chip discharge indirectly.Wherein can be accurate
Controlling the width of blade 32, get final product machine-shaping by a feed, therefore production efficiency is higher.Wherein coolant is the coldest
But oil.
In order to ensure that circular groove cutter has enough intensity, cutter head 3 to be provided with at least two blade 32, the most preferably two
Blade 32, is on the one hand easy to manufacture, is on the other hand easy to safeguard.
Further, blade 32 is provided with the cylindrical section 31 for machining and shaping.When processing annular groove by blade 32, can
Machined region is carried out shaping by cylindrical section 31, the processing of annular groove therefore can be effectively improved by cylindrical section 31
Precision, the axial dimension of its middle cylindrical section 31 is preferably 1.5～2.0mm.
Further, lead channel 21 preferably cross section is semicircular lead channel.Can certainly be selected other
Shape, this is not specifically limited by the present embodiment.
In order to avoid cutter head 3 abrades the machined surface of deep hole annular groove 1, the medial wall of cutter head 3 is or/and lateral wall is along cutter head 3
Tapered to the axial direction of handle of a knife 2.Wherein can be in the medial wall of cutter head 3 or/and lateral wall arrange inverted cone surface, the tool of its back taper
Body tapering and axial length specifically depend on the circumstances, and this is not limited by the present embodiment.
The helixangleβ size of annular groove cutter is set according to processed material, when part to be processed is steel and iron parts, and spiral shell
The helixangleβ screwing out hopper 33 is 15 °～20 °；When part to be processed is non-ferrous metal pieces, the helical angle of spiral discharging groove 33
β is 25 °～30 °, and the degree of depth of spiral discharging groove 33 is 0.2～0.3 times of cutter head 3 sidewall thickness, spiral discharging groove 33 axial
The degree of depth 15～20mm of the annular groove that length processes more than needs, its numerical value all includes endpoint value.
Wherein, when the sidewall thickness of cutter head 3 is not less than 2mm, the radius of lead channel 21 is 1～1.5mm；When cutter head 3
When sidewall thickness is not more than 1.5mm, the radius of lead channel 21 is 0.5～1mm, and when there being two lead channel 21, lead channel 21 is right
Claim to arrange, and the angle of the end of lead channel 21 and blade 32 is 45 °.
It addition, when cutter head 3 thickness not less than 2mm time, the groove depth of blade 32 is 2～2.5mm, when cutter head 3 thickness not
During more than 1mm, the groove depth of blade 32 is 1～1.5mm；When part to be processed is steel and iron parts, the anterior angle of blade 32 is 6 °～8 °,
When part to be processed is non-ferrous metal pieces, the anterior angle of blade 32 is 3 °～5 °；When part to be processed is steel and iron parts, blade 32
The first relief angle α1It is 8 °～10 °, when part to be processed is non-ferrous metal, the first relief angle α of blade 321It is 12 °～15 °, cutter
Second relief angle α of sword 322More than the first relief angle α1, the most preferably by the second relief angle α2Elect 30 ° as, additionally the bottom land of blade 32 with
Angle between the radial direction of cutter head 3 is 25 °, naturally it is also possible to be chosen for other angle value according to practical situation.
In order to improve the intensity of the helical deep hole annular groove cutter that above-described embodiment is provided, the diameter of handle of a knife 2 can be set to
Diameter more than cutter head 3.
Above a kind of helical deep hole annular groove cutter provided by the present invention is described in detail.Used herein specifically
Principle and the embodiment of the present invention are set forth by individual example, and the explanation of above example is only intended to help and understands the present invention
Core concept.It should be pointed out that, for those skilled in the art, in the premise without departing from the principle of the invention
Under, it is also possible to the present invention is carried out some improvement and modification, and these improve and modify the protection also falling into the claims in the present invention
In the range of.
Claims (10)
1. a helical deep hole annular groove cutter, it is characterised in that include that tubular cutter hub, one end of described tubular cutter hub are provided with handle of a knife,
The other end is provided with cutter head, and the end of described cutter head is provided with blade, and the lateral wall of described cutter head is provided with spiral discharging groove, described cylinder
The inwall of shape cutter hub is provided with at least one lead channel.
Helical deep hole annular groove cutter the most according to claim 1, it is characterised in that described cutter head is provided with described at least two
Blade.
Helical deep hole annular groove cutter the most according to claim 2, it is characterised in that described blade is provided with for machining and shaping
Cylindrical section.
Helical deep hole annular groove cutter the most according to claim 3, it is characterised in that described lead channel be cross section be semicircle
Lead channel.
Helical deep hole annular groove cutter the most according to claim 4, it is characterised in that the medial wall of described cutter head is or/and outside
Wall is tapered along described cutter head to the axial direction of described handle of a knife.
Helical deep hole annular groove cutter the most according to claim 5, it is characterised in that the medial wall of described cutter head is or/and outside
Wall is inverted cone surface.
Helical deep hole annular groove cutter the most according to claim 6, it is characterised in that when part to be processed is steel and iron parts, institute
The helical angle stating spiral discharging groove is 15 °～20 °；When part to be processed is non-ferrous metal pieces, the spiral shell of described spiral discharging groove
Swing angle is 25 °～30 °, and the degree of depth of described spiral discharging groove is 0.2～0.3 times of described cutter head sidewall times thickness, described spiral
The degree of depth 15～20mm of the annular groove that the axial length of blow tank processes more than needs, its numerical value all includes endpoint value.
Helical deep hole annular groove cutter the most according to claim 7, it is characterised in that when the sidewall thickness of described cutter head is not less than
During 2mm, the radius of described lead channel is 1～1.5mm；When the sidewall thickness of described cutter head is not more than 1.5mm, described lead channel
Radius be 0.5～1mm, when there being two described lead channel, described lead channel is symmetrical arranged, and described lead channel and described cutter
The angle of the end of sword is 45 °.
Helical deep hole annular groove cutter the most according to claim 8, it is characterised in that
When the thickness of described cutter head is not less than 2mm, the groove depth of described blade is 2～2.5mm, when the thickness of described cutter head is little
When 1mm, the groove depth of described blade is 1～1.5mm；
When part to be processed is steel and iron parts, the anterior angle of described blade is 6 °～8 °, when part to be processed is non-ferrous metal pieces,
The anterior angle of described blade is 3 °～5 °；
When part to be processed part is steel and iron parts, the first relief angle of described blade is 8 °～10 °, when part to be processed is for there being coloured gold
During genus, the first relief angle of described blade is 12 °～15 °, and the second relief angle of described blade is more than described first relief angle, described blade
Bottom land and the radial direction of described cutter head between angle be 25 °.
10. according to the helical deep hole annular groove cutter described in any one of claim 1 to 9, it is characterised in that the diameter of described handle of a knife is big
Diameter in described cutter head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791744.9A CN106216750A (en) | 2016-08-31 | 2016-08-31 | A kind of helical deep hole annular groove cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791744.9A CN106216750A (en) | 2016-08-31 | 2016-08-31 | A kind of helical deep hole annular groove cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106216750A true CN106216750A (en) | 2016-12-14 |
Family
ID=58075309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610791744.9A Pending CN106216750A (en) | 2016-08-31 | 2016-08-31 | A kind of helical deep hole annular groove cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106216750A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482913A (en) * | 2018-07-13 | 2019-03-19 | 中国航空工业集团公司济南特种结构研究所 | A kind of inner conical surface process tool of the anti-weathering cap of radome |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472595A (en) * | 1978-07-31 | 1979-06-11 | Hitachi Ltd | Core drill |
| US5078605A (en) * | 1988-12-02 | 1992-01-07 | Institut Straumann Ag | Device for the treatment of a bone, particularly a jaw bone, and/or tooth |
| CN2377029Y (en) * | 1999-05-28 | 2000-05-10 | 朱虎林 | Multiple-cutting-edge steel plate drill |
| WO2007049020A2 (en) * | 2005-10-24 | 2007-05-03 | C4 Carbides Limited | Drill bit |
| CN201030448Y (en) * | 2006-10-26 | 2008-03-05 | 中国有色金属工业十一冶安装工程公司金属容器结构厂 | Hollow boring bit |
| CN201493517U (en) * | 2009-04-17 | 2010-06-02 | 上海钻圣和新材料科技有限公司 | Diamond thin-wall drill bit |
| CN103658771A (en) * | 2013-11-29 | 2014-03-26 | 河南省蓝剑工具科技有限公司 | Machine clamp hard alloy jacking drill bit |
| CN104827099A (en) * | 2015-05-26 | 2015-08-12 | 启东市吕四科技创业中心有限公司 | Lengthened type hollow drill bit special for steel plates and capable of improving efficiency |
| CN206065512U (en) * | 2016-08-31 | 2017-04-05 | 中国航天科技集团公司烽火机械厂 | A kind of helical deep hole annular groove knife |
-
2016
- 2016-08-31 CN CN201610791744.9A patent/CN106216750A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472595A (en) * | 1978-07-31 | 1979-06-11 | Hitachi Ltd | Core drill |
| US5078605A (en) * | 1988-12-02 | 1992-01-07 | Institut Straumann Ag | Device for the treatment of a bone, particularly a jaw bone, and/or tooth |
| CN2377029Y (en) * | 1999-05-28 | 2000-05-10 | 朱虎林 | Multiple-cutting-edge steel plate drill |
| WO2007049020A2 (en) * | 2005-10-24 | 2007-05-03 | C4 Carbides Limited | Drill bit |
| CN201030448Y (en) * | 2006-10-26 | 2008-03-05 | 中国有色金属工业十一冶安装工程公司金属容器结构厂 | Hollow boring bit |
| CN201493517U (en) * | 2009-04-17 | 2010-06-02 | 上海钻圣和新材料科技有限公司 | Diamond thin-wall drill bit |
| CN103658771A (en) * | 2013-11-29 | 2014-03-26 | 河南省蓝剑工具科技有限公司 | Machine clamp hard alloy jacking drill bit |
| CN104827099A (en) * | 2015-05-26 | 2015-08-12 | 启东市吕四科技创业中心有限公司 | Lengthened type hollow drill bit special for steel plates and capable of improving efficiency |
| CN206065512U (en) * | 2016-08-31 | 2017-04-05 | 中国航天科技集团公司烽火机械厂 | A kind of helical deep hole annular groove knife |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482913A (en) * | 2018-07-13 | 2019-03-19 | 中国航空工业集团公司济南特种结构研究所 | A kind of inner conical surface process tool of the anti-weathering cap of radome |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100418682C (en) | Drill bit for forming stepped hole | |
| CN103586636B (en) | The processing method of spout and the processing unit (plant) of spout | |
| CN107695618A (en) | A kind of forming method of carbide alloy screwed hole | |
| CN105328420A (en) | Method for machining large thin-wall inclined eccentric shaft sleeve of gyratory crusher | |
| CN106363241A (en) | PCD reamer capable of conducting both rough machining and finish machining | |
| CN206065512U (en) | A kind of helical deep hole annular groove knife | |
| CN104440006A (en) | Method to produce a radial run-out tool as well as a radial run-out tool | |
| CN104014989A (en) | Semi-circular hole machining method | |
| CN104475887B (en) | The EDM Grinding method of Low rigidity taper seat rod member | |
| CN106216750A (en) | A kind of helical deep hole annular groove cutter | |
| CN205254205U (en) | Modular end face seal groove milling cutter | |
| CN106112083A (en) | A kind of deep hole end face annular groove forming-tool | |
| CN207188851U (en) | With the top cutter of evagination | |
| CN102922010A (en) | Self-lubricating twist drill and machining method thereof | |
| CN203343458U (en) | Compound guiding rose reamer | |
| CN103769827B (en) | Mould fixed cover processing technology | |
| CN204108421U (en) | A kind of fluted drill | |
| CN107442830A (en) | A kind of slotting cutter for being used to finish and its processing method | |
| CN209110249U (en) | Hard alloy forms gouge bit | |
| CN207695791U (en) | A kind of cutter of thread mill drilling | |
| CN105234438A (en) | Tool for machining annular deep and narrow grooves in end faces | |
| CN206065514U (en) | A kind of deep hole end face annular groove forming-tool | |
| CN203649496U (en) | Milling cutter for machining threaded hole | |
| CN207387444U (en) | A kind of diamond roller for being used to modify spiral bit abrasive grinding wheel | |
| CN205764064U (en) | A kind of boring cutter body for deep hole machining stepped hole tapering arc transition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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: 611130 Changan Road, Liucheng, Wenjiang District, Chengdu, Sichuan Province, No. 198 Applicant after: Sichuan Aerospace beacon Servo Control Technology Co., Ltd. Address before: 611100 Liucheng Road, Wenjiang, Sichuan, No. Changan Road, No. 198 Applicant before: Fenghuo Machine Works of China Aerospace Science and Technology Corporation |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161214 |