CN104607665A - Follow-up turning device and method of thin-wall curved generatrix revolving part - Google Patents
Follow-up turning device and method of thin-wall curved generatrix revolving part Download PDFInfo
- Publication number
- CN104607665A CN104607665A CN201310536238.1A CN201310536238A CN104607665A CN 104607665 A CN104607665 A CN 104607665A CN 201310536238 A CN201310536238 A CN 201310536238A CN 104607665 A CN104607665 A CN 104607665A
- Authority
- CN
- China
- Prior art keywords
- turning
- processed
- point
- compressing
- lathe tool
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B7/00—Automatic or semi-automatic turning-machines with a single working-spindle, e.g. controlled by cams; Equipment therefor; Features common to automatic and semi-automatic turning-machines with one or more working-spindles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- 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
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
Abstract
The invention relates to the technical field of machining, in particular discloses a follow-up turning device and method of a thin-wall curved generatrix revolving part. The device comprises a mould, a pressing structure, a numerical control system and a turning structure. A part to be machined is put on the mould similar to the part to be machined in curve radian, and is pressed and fixed through a tail tightening piece at the rightmost end; both the pressing structure and the turning structure are pressed against the surface of the part to be machined; and the motion trails of the pressing structure and the turning structure are controlled through the numerical control system, wherein the numerical control system sends a numerical control signal, controls a servo system connected with the turning structure, and drives the turning structure to machine the part to be machined. In the device and the method, a pressing wheel of the pressing structure forms a stable pressing area around a pressing point, and a turning point is positioned in the stable pressing area, so that the part with better wall thickness uniformity can be turned by selecting a pressing wheel with the proper fillet radius, a proper locus of the pressing wheel, a turning tool with the proper fillet radius, a proper locus of the turning tool and a proper turning amount.
Description
Technical field
The invention belongs to Machining Technology field, be specifically related to a kind of Thin Walled Curved bus revolving parts Following Car turning device and method.
Background technology
For the Thin Walled Curved bus revolving parts of special-purpose, as the carrier rocket booster case bottom shell body of mould pressing, there is following features in manufacture with in using: 1) part wall thickness accuracy requires high, circularity requires on the low side; 2) there is certain machining amount in Plastic Forming part on thickness; 3) part forming circularity is not enough to adopt the method for surfaces externally and internally machining to ensure wall thickness; 4) Plastic Forming part profile can not accurately repeat.
Summary of the invention
The object of the present invention is to provide a kind of Thin Walled Curved bus revolving parts Following Car turning device and method, the wall thickness control of large thin-wall revolving parts can be realized.
Technical scheme of the present invention is as follows: a kind of Thin Walled Curved bus revolving parts Following Car turning device, this device comprises type tire, compressing structure, digital control system and turning structure, wherein, part to be processed is positioned on the type tire similar to part curve radian to be processed, and is fixed by the tail top of low order end; Compressing structure and turning structure one top lifting are pressed in piece surface to be processed, and the movement locus of compressing structure and turning structure is controlled by digital control system, wherein, digital control system sends digital control signal, control the servo-drive system be connected with turning structure, drive turning structure to treat processing parts and process.
In described compressing structure, contact roller arc radius gets 1.5 ~ 3.0 times of part wall thickness to be processed.
Lathe tool radius of corner in described turning structure is 0.5mm ~ 5mm.
The lathe tool of described turning structure and the formation turning point of piece surface to be processed, contact roller in compressing structure and piece surface to be processed are formed and compress point, turning point is positioned at the rear compressing point, and turning point and the distance compressing point are 3 ~ 7 times of part wall thickness to be processed.
Contact roller in described compressing structure by measuring part to be processed along the thickness distribution of bus, and by turning tire bus by part thickness to be processed to the external track determining contact roller.
Lathe tool in described turning structure is by determining the thickest treating turning part, and the difference obtaining turning tire bus outside side-play amount thickest and the maximum depth of cut determines the track of lathe tool.
A kind of Thin Walled Curved bus revolving parts Following Car cutting method, the method specifically comprises the steps:
Step 1, part to be processed to be positioned on the type tire similar to part curve radian to be processed, and to be fixed by the tail top of low order end;
Step 2, choose the contact roller radius of suitable compressing structure and the lathe tool radius of corner of turning structure, and compressing structure and turning structure one top lifting are pressed in piece surface to be processed;
The lathe tool track of step 3, the track determining compressing structure contact roller and turning structure;
Contact roller in compressing structure by measuring part to be processed along the thickness distribution of bus, and by turning tire bus by part thickness to be processed to the external track determining contact roller;
Lathe tool in turning structure is by determining the thickest treating turning part, and the difference obtaining turning tire bus outside side-play amount thickest and the maximum depth of cut determines the track of lathe tool;
Step 4, the Turning parameters installed on general part material and common turning equipment, i.e. cutting speed, the depth of cut, the amount of feeding, adopts horizontal line speed mode to treat processing parts and carries out turning.
Described step 2 specifically comprises:
The contact roller radius of step 2.1, compressing structure gets 1.5 ~ 3.0 times of part wall thickness to be processed, and thin-walled parts gets value bigger than normal, and thick-walled parts gets value less than normal;
Lathe tool radius of corner in step 2.2, turning structure is 0.5mm ~ 5mm, part to be processed have larger surplus need remove or roughness at more than Ra12.5 time, select radius of corner at the lathe tool of 0.5mm ~ 2mm, other situations select radius of corner at the lathe tool of 2mm ~ 5mm;
Step 2.3, the lathe tool of turning structure and piece surface to be processed have a contact point, contact roller in compressing structure and piece surface to be processed also have a contact point, the distance of two contact points is compress the distance put with turning point, in compressing structure, contact roller compresses part to be processed by compressing point, around compression point, part to be processed forms the stronger stability region of rigidity, and it is asymmetric to compress some stability region around, the stability region at its rear is larger, turning point is positioned at the rear compressing point, and turning point and the distance compressing point are 3 ~ 7 times of part wall thickness to be processed.
Remarkable result of the present invention is: a kind of Thin Walled Curved bus revolving parts Following Car turning device of the present invention and method, the contact roller of its compressing structure forms the steady region of pressure around compression point, turning point is positioned at Ya Wen district, by selecting suitable contact roller radius of corner, contact roller track, lathe tool radius of corner, lathe tool track and Turning parameters, turning the better part of evenness of wall thickness can be obtained.
Accompanying drawing explanation
Fig. 1 is a kind of Thin Walled Curved bus revolving parts Following Car turning device structural representation of the present invention;
In figure: 1, type tire; 2, part to be processed; 3, compressing structure; 4, digital control system; 5, digital control signal; 6, servo-drive system; 7, turning structure; 8, tail top.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of Thin Walled Curved bus revolving parts Following Car turning device, comprises type tire 1, compressing structure 3, digital control system 4 and turning structure 7, wherein, part 2 to be processed is positioned on the type tire 1 similar to part 2 curve radian to be processed, and is fixed by the tail top 8 of low order end, compressing structure 3 and turning structure 7 one top lifting are pressed in part 2 to be processed surface, and the movement locus of compressing structure 3 and turning structure 7 is controlled by digital control system 4, wherein, digital control system 4 sends digital control signal 5, control the servo-drive system 6 be connected with turning structure 7, drive turning structure 7 to treat processing parts and process, the peripheral region that compressing structure 3 contacts with part 2 to be processed adopts hammering method to confirm pad pasting state, thus is controlled the movement locus of compressing structure 3 by digital control system 4, reaches good instantaneous pad pasting state, in compressing structure 3, contact roller arc radius gets 1.5 ~ 3.0 times of part wall thickness to be processed, and thin-walled parts gets value bigger than normal, and thick-walled parts gets value less than normal, contact roller in compressing structure 3 by measuring part 2 to be processed along the thickness distribution of bus, and by turning tire bus by part 2 thickness to be processed to the external track determining contact roller, there is a contact point on lathe tool and part to be processed 2 surface of turning structure 7, contact roller in compressing structure 3 and piece surface to be processed also have a contact point, the distance of two contact points is compress the distance put with turning point, in compressing structure 3, contact roller compresses part 2 to be processed by compressing point, around compression point, part 2 to be processed forms the stronger stability region of rigidity, and it is asymmetric to compress some stability region around, the stability region at its rear is larger, turning point is positioned at the rear compressing point, and turning point and the distance compressing point are 3 ~ 7 times of part 2 wall thickness to be processed, lathe tool radius of corner in turning structure 7 is 0.5mm ~ 5mm, part to be processed have larger surplus need remove or roughness at more than Ra12.5 time, select radius of corner at the lathe tool of 0.5mm ~ 2mm, other situations select radius of corner at the lathe tool of 2mm ~ 5mm, lathe tool in turning structure 7 is by determining the thickest treating turning part, and the difference obtaining turning tire bus outside side-play amount thickest and the maximum depth of cut determines the track of lathe tool.
A kind of Thin Walled Curved bus revolving parts Following Car cutting method, the method specifically comprises the steps:
Step 1, part to be processed to be positioned on the type tire similar to part curve radian to be processed, and to be fixed by the tail top of low order end;
Step 2, choose the contact roller radius of suitable compressing structure and the lathe tool radius of corner of turning structure, and compressing structure and turning structure one top lifting are pressed in piece surface to be processed;
The contact roller radius of step 2.1, compressing structure gets 1.5 ~ 3.0 times of part wall thickness to be processed, and thin-walled parts gets value bigger than normal, and thick-walled parts gets value less than normal;
Lathe tool radius of corner in step 2.2, turning structure is 0.5mm ~ 5mm, part to be processed have larger surplus need remove or roughness at more than Ra12.5 time, select radius of corner at the lathe tool of 0.5mm ~ 2mm, other situations select radius of corner at the lathe tool of 2mm ~ 5mm;
Step 2.3, the lathe tool of turning structure and piece surface to be processed have a contact point, contact roller in compressing structure and piece surface to be processed also have a contact point, the distance of two contact points is compress the distance put with turning point, in compressing structure, contact roller compresses part to be processed by compressing point, around compression point, part to be processed forms the stronger stability region of rigidity, and it is asymmetric to compress some stability region around, the stability region at its rear is larger, turning point is positioned at the rear compressing point, and turning point and the distance compressing point are 3 ~ 7 times of part wall thickness to be processed,
The lathe tool track of step 3, the track determining compressing structure contact roller and turning structure;
Contact roller in compressing structure by measuring part to be processed along the thickness distribution of bus, and by turning tire bus by part thickness to be processed to the external track determining contact roller;
Lathe tool in turning structure is by determining the thickest treating turning part, and the difference obtaining turning tire bus outside side-play amount thickest and the maximum depth of cut determines the track of lathe tool;
Step 4, the Turning parameters installed on general part material and common turning equipment, i.e. cutting speed, the depth of cut, the amount of feeding, adopts horizontal line speed mode to treat processing parts and carries out turning.
Claims (8)
1. a Thin Walled Curved bus revolving parts Following Car turning device, it is characterized in that: this device comprises type tire (1), compressing structure (3), digital control system (4) and turning structure (7), wherein, part to be processed (2) is positioned on the type tire (1) similar to part to be processed (2) curve radian, and is fixed by the tail top (8) of low order end; Compressing structure (3) and turning structure (7) top lifting are pressed in part to be processed (2) surface, and the movement locus of compressing structure (3) and turning structure (7) is controlled by digital control system (4), wherein, digital control system (4) sends digital control signal (5), control the servo-drive system (6) be connected with turning structure (7), drive turning structure (7) to treat processing parts and process.
2. a kind of Thin Walled Curved bus revolving parts Following Car turning device according to claim 1, is characterized in that: in described compressing structure (3), contact roller arc radius gets 1.5 ~ 3.0 times of part wall thickness to be processed.
3. a kind of Thin Walled Curved bus revolving parts Following Car turning device according to claim 1, is characterized in that: the lathe tool radius of corner in described turning structure (7) is 0.5mm ~ 5mm.
4. a kind of Thin Walled Curved bus revolving parts Following Car turning device according to claim 1, it is characterized in that: the formation turning point on the lathe tool of described turning structure (7) and part to be processed (2) surface, contact roller in compressing structure (3) and piece surface to be processed are formed and compress point, turning point is positioned at the rear compressing point, and turning point and the distance compressing point are 3 ~ 7 times of part to be processed (2) wall thickness.
5. a kind of Thin Walled Curved bus revolving parts Following Car turning device according to claim 1, it is characterized in that: the contact roller in described compressing structure (3) by measuring part to be processed (2) along the thickness distribution of bus, and by turning tire bus by part to be processed (2) thickness to the external track determining contact roller.
6. a kind of Thin Walled Curved bus revolving parts Following Car turning device according to claim 1, it is characterized in that: the lathe tool in described turning structure (7) is by determining to treat the thickest of turning part, and the difference obtaining turning tire bus outside side-play amount thickest and the maximum depth of cut determines the track of lathe tool.
7. a Thin Walled Curved bus revolving parts Following Car cutting method, is characterized in that: the method specifically comprises the steps:
Step 1, part to be processed to be positioned on the type tire similar to part curve radian to be processed, and to be fixed by the tail top of low order end;
Step 2, choose the contact roller radius of suitable compressing structure and the lathe tool radius of corner of turning structure, and compressing structure and turning structure one top lifting are pressed in piece surface to be processed;
The lathe tool track of step 3, the track determining compressing structure contact roller and turning structure;
Contact roller in compressing structure by measuring part to be processed along the thickness distribution of bus, and by turning tire bus by part thickness to be processed to the external track determining contact roller;
Lathe tool in turning structure is by determining the thickest treating turning part, and the difference obtaining turning tire bus outside side-play amount thickest and the maximum depth of cut determines the track of lathe tool;
Step 4, the Turning parameters installed on general part material and common turning equipment, i.e. cutting speed, the depth of cut, the amount of feeding, adopts horizontal line speed mode to treat processing parts and carries out turning.
8. a kind of Thin Walled Curved bus revolving parts Following Car cutting method according to claim 7, is characterized in that: described step 2 specifically comprises:
The contact roller radius of step 2.1, compressing structure gets 1.5 ~ 3.0 times of part wall thickness to be processed, and thin-walled parts gets value bigger than normal, and thick-walled parts gets value less than normal;
Lathe tool radius of corner in step 2.2, turning structure is 0.5mm ~ 5mm, part to be processed have larger surplus need remove or roughness at more than Ra12.5 time, select radius of corner at the lathe tool of 0.5mm ~ 2mm, other situations select radius of corner at the lathe tool of 2mm ~ 5mm;
Step 2.3, the lathe tool of turning structure and piece surface to be processed have a contact point, contact roller in compressing structure and piece surface to be processed also have a contact point, the distance of two contact points is compress the distance put with turning point, in compressing structure, contact roller compresses part to be processed by compressing point, around compression point, part to be processed forms the stronger stability region of rigidity, and it is asymmetric to compress some stability region around, the stability region at its rear is larger, turning point is positioned at the rear compressing point, and turning point and the distance compressing point are 3 ~ 7 times of part wall thickness to be processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536238.1A CN104607665B (en) | 2013-11-04 | 2013-11-04 | Follow-up turning device and method of thin-wall curved generatrix revolving part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536238.1A CN104607665B (en) | 2013-11-04 | 2013-11-04 | Follow-up turning device and method of thin-wall curved generatrix revolving part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104607665A true CN104607665A (en) | 2015-05-13 |
| CN104607665B CN104607665B (en) | 2017-05-10 |
Family
ID=53142456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310536238.1A Active CN104607665B (en) | 2013-11-04 | 2013-11-04 | Follow-up turning device and method of thin-wall curved generatrix revolving part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104607665B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772812A (en) * | 2016-04-21 | 2016-07-20 | 上海航天设备制造总厂 | Method for five-axis mirror milling numerical control machining of integrally-formed tank bottom |
| CN106216713A (en) * | 2016-08-15 | 2016-12-14 | 安徽东风机电科技股份有限公司 | A kind of improvement thin-wall conical spinning part car machining on spherical end method |
| CN108705102A (en) * | 2018-06-20 | 2018-10-26 | 湖北三江航天红阳机电有限公司 | A kind of vaulted thin-wall part machining method |
| CN108890548A (en) * | 2018-06-27 | 2018-11-27 | 西安飞机工业（集团）有限责任公司 | A kind of Compliant pressure mechanism and its compressing method |
| CN112589133A (en) * | 2020-12-03 | 2021-04-02 | 四川航天长征装备制造有限公司 | Uniform thinning processing method and device for large irregular bus-shaped surface shell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033569A (en) * | 1976-10-15 | 1977-07-05 | Dunn Garf L | Deformation-preventing workpiece-holding fixture for machine tools |
| CN102126140A (en) * | 2010-12-22 | 2011-07-20 | 北京遥测技术研究所 | Combined clamp and clamping method for small-mouth large-cavity thin-walled part |
| CN102430763A (en) * | 2011-09-08 | 2012-05-02 | 中国航空工业第六一八研究所 | Precision finishing method of inner spherical surface of high-purity aluminum thin-wall part |
| CN202639926U (en) * | 2012-07-24 | 2013-01-02 | 中国核动力研究设计院 | Clamping positioning device based on inner hole processing of thin-wall pipe fitting |
| CN103056392A (en) * | 2012-10-17 | 2013-04-24 | 南京梅山冶金发展有限公司 | Clamping and machining method for large thin-wall taper sleeves |
-
2013
- 2013-11-04 CN CN201310536238.1A patent/CN104607665B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033569A (en) * | 1976-10-15 | 1977-07-05 | Dunn Garf L | Deformation-preventing workpiece-holding fixture for machine tools |
| CN102126140A (en) * | 2010-12-22 | 2011-07-20 | 北京遥测技术研究所 | Combined clamp and clamping method for small-mouth large-cavity thin-walled part |
| CN102430763A (en) * | 2011-09-08 | 2012-05-02 | 中国航空工业第六一八研究所 | Precision finishing method of inner spherical surface of high-purity aluminum thin-wall part |
| CN202639926U (en) * | 2012-07-24 | 2013-01-02 | 中国核动力研究设计院 | Clamping positioning device based on inner hole processing of thin-wall pipe fitting |
| CN103056392A (en) * | 2012-10-17 | 2013-04-24 | 南京梅山冶金发展有限公司 | Clamping and machining method for large thin-wall taper sleeves |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772812A (en) * | 2016-04-21 | 2016-07-20 | 上海航天设备制造总厂 | Method for five-axis mirror milling numerical control machining of integrally-formed tank bottom |
| CN106216713A (en) * | 2016-08-15 | 2016-12-14 | 安徽东风机电科技股份有限公司 | A kind of improvement thin-wall conical spinning part car machining on spherical end method |
| CN108705102A (en) * | 2018-06-20 | 2018-10-26 | 湖北三江航天红阳机电有限公司 | A kind of vaulted thin-wall part machining method |
| CN108890548A (en) * | 2018-06-27 | 2018-11-27 | 西安飞机工业（集团）有限责任公司 | A kind of Compliant pressure mechanism and its compressing method |
| CN112589133A (en) * | 2020-12-03 | 2021-04-02 | 四川航天长征装备制造有限公司 | Uniform thinning processing method and device for large irregular bus-shaped surface shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104607665B (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104607665A (en) | Follow-up turning device and method of thin-wall curved generatrix revolving part | |
| CN203245236U (en) | Spinning tool for manufacturing thickened spinning belt pulley | |
| CN101966555A (en) | Wheel rolling and molding method | |
| CN105414297B (en) | Asynchronous stepped spinning processing method | |
| CN103447833A (en) | PTFE (polytetrafluoroethylene) plastic rotating sleeve machining method | |
| CN100574969C (en) | Ball valve core hydraulic expansion method | |
| CN108356485A (en) | A kind of processing method with tenon tooth small part | |
| CN105312858B (en) | A kind of mold used in submersible sewage pump pump case forming method and this method | |
| CN103752856A (en) | Wheel hub shaft tube rolling processing method | |
| CN103722348A (en) | Thin-walled special-shaped plate machining method | |
| CN104741429B (en) | A kind of combination type spinning roller and the spin-on process of shaping shaped piece thereof | |
| CN202861128U (en) | Spinning forming mould for cylindrical workpiece with wide flanged lip | |
| CN206981512U (en) | One kind automation servo-actuated die cutting machine | |
| CN205032635U (en) | Electron parking adjusting nut cold -heading device | |
| CN205929179U (en) | Rubber bush assembly seals glues muscle mould structure | |
| CN203418219U (en) | Spiral welding steel cylinder diameter and cutting precision control device | |
| CN100500342C (en) | Elastic oil tank curved surface digital control vehicle processing method | |
| CN206246468U (en) | Flange form Workpiece shaping prefabricated component | |
| CN205380176U (en) | Drift subassembly | |
| CN202200347U (en) | Cutting tool for cutting and molding rubber sealing ring | |
| CN103464763A (en) | Method for producing oil pump gear through powder metallurgy | |
| CN202185598U (en) | Cutter used for processing O-shaped groove of rubber-plastic seal ring | |
| CN102042402A (en) | Piston ring oil ring with scraping edge with high width consistency and machining method thereof | |
| CN206373304U (en) | A kind of motor case of novel durable makes mould | |
| CN203578799U (en) | Pre-splitting cutter for machining belt pulley |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100076 Beijing, Fengtai District, South Road, No. 1, Co-patentee after: China Academy of Launch Vehicle Technology Patentee after: Capital Aerospace Machinery Co., Ltd. Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Co-patentee before: China Academy of Launch Vehicle Technology Patentee before: Capital Aerospace Machinery Company |
|
| CP01 | Change in the name or title of a patent holder |