CN101456168A - Manufacture method of high-speed grinding head for processing precise hole and high-speed grinding head - Google Patents
Manufacture method of high-speed grinding head for processing precise hole and high-speed grinding head Download PDFInfo
- Publication number
- CN101456168A CN101456168A CNA2008102374916A CN200810237491A CN101456168A CN 101456168 A CN101456168 A CN 101456168A CN A2008102374916 A CNA2008102374916 A CN A2008102374916A CN 200810237491 A CN200810237491 A CN 200810237491A CN 101456168 A CN101456168 A CN 101456168A
- Authority
- CN
- China
- Prior art keywords
- emery wheel
- connecting portion
- transiting rod
- carbide alloy
- motor connecting
- 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
Images
Abstract
The invention relates to a method for manufacturing a high-speed grinding bit used for processing precise small holes. The method comprises: a grinding wheel connecting part, a transition rod of carbide and a motor connecting part are assembled into a grinding wheel lengthening shaft; one end of the transition rod of carbide is connected with the motor connecting part through hot extrusion, while the other end is connected with the grinding wheel through welding; after manufacturing the grinding wheel lengthening shaft, the motor connecting part of the grinding wheel lengthening shaft is connected with the output end of a drive motor; and the grinding wheel connecting part is connected with the grinding wheel through a grinding wheel nail. The method has the advantages of improving the rigidity of the grinding wheel lengthening shaft and saving the resetting and balancing working procedure. The high-speed grinding bit manufactured by the method comprises the drive motor, the grinding wheel lengthening shaft, the grinding wheel nail and the grinding wheel; the grinding wheel lengthening shaft consists of the transition rod of carbide, the motor connecting part and the grinding wheel connecting part; and one end of the transition rod of carbide is welded with the grinding wheel connecting part, while the other end is connected with an accommodating hole of the transition rod on the motor connecting part through the hot extrusion. The high-speed grinding bit has the advantages of improving the grinding quality of the precise small holes and improving the grinding production efficiency.
Description
Technical field
The present invention relates to the machining tool of precise hole, relate in particular to processing precise hole the high speed bistrique manufacture method and when processing precise hole used high speed bistrique.
Background technology
At present, the aperture 4mm to 16mm, hole depth more than or equal to 15mm, simultaneously dimensional accuracy in IT5～7, surface roughness value requires to be less than or equal to Ra0.8 μ m, has the precise hole that the accuracy of form and position requires, the general rotating speed that uses reaches 100000 rev/mins high speed grinding machine grinding, and the bistrique of employing is the high speed bistrique.Use the precise hole that this type of aperture of high speed bistrique grinding is little and draw ratio is big, have following problem: be subjected to the limited aperture of precise hole, the diameter of Grinding wheel for milling hole must be less than the aperture of precise hole, and this makes that the diameter of the emery wheel spreading axle that the connection emery wheel is used is littler; And according to the precise hole depth dimensions, emery wheel spreading axle must have enough jib-lengths, just can reach the requirement of working depth.As seen, the emery wheel spreading axle of processing precise hole high speed bistrique has the advantages that diameter is little, length is long, therefore, when the high speed bistrique is worked, emery wheel spreading axle is easy to generate flexural deformation (or claiming cutter relieving) and vibration, make the machining accuracy and the difficult control of surface roughness of workpiece, also limited the raising of grinding dosage simultaneously, influenced production efficiency.In order to improve the rigidity of emery wheel spreading axle, existing measure is directly at the stage casing of emery wheel spreading axle welding carbide alloy transiting rod, the gas that produces when welding in order to get rid of, need at the transiting rod containing hole place of motor connecting portion drilling radial hole, this hole claims the exhaust air technique hole, this exhaust air technique pore volume easily causes emery wheel spreading axle imbalance when high-speed motion, even exhaust air technique hole on after finishing welding, blocking up, also can cause emery wheel spreading axle imbalance when high-speed motion owing to the difference of filling material, influence the machining accuracy of precise hole, thereby must purchase smoothing weighing apparatus special equipment and increase complicated going heavily, smoothing weighing apparatus operation.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, a kind of high speed bistrique manufacture method that improves emery wheel spreading axle rigidity, exempts the processing precise hole that goes re-graduation dynamic balancing operation is provided, and by high speed bistrique this method manufacturing, that can improve precise hole grinding quality and grinding production efficiency.
For solving the problems of the technologies described above, the present invention by the following technical solutions.
A kind of high speed bistrique manufacture method of processing precise hole, it is that emery wheel connecting portion, carbide alloy transiting rod and motor connecting portion are assembled into emery wheel spreading axle, wherein carbide alloy transiting rod one end adopts hot extrusion to be connected with the motor connecting portion, the other end and emery wheel connecting portion adopt and are welded to connect, after finishing the making of emery wheel spreading axle, the motor connecting portion is connected with the output of drive motors, and the emery wheel connecting portion is connected with emery wheel by the emery wheel nail.
The concrete making step of emery wheel spreading axle is:
(1), processing motor connecting portion and emery wheel connecting portion: the base substrate to two parts is made machining respectively, during processing motor connecting portion, bore the transiting rod containing hole thereon, the aperture of transiting rod containing hole is 3.4mm～12mm, after shaping, make integral quenching, temper, again the transiting rod containing hole is done grinding;
(2), processing rigid alloy transition bar: adopt centerless grinder match grinding carbide alloy transiting rod, making the magnitude of interference of the transiting rod containing hole on itself and the motor connecting portion is 0.008mm～0.025mm;
(3), hot extrusion assembling carbide alloy transiting rod and motor connecting portion: the motor connecting portion is heated to 280 ℃～300 ℃, and insulation 20min～40min, measure the aperture of transiting rod containing hole, when the aperture of transiting rod containing hole reaches the big 0.010mm of diameter than carbide alloy transiting rod～0.035mm, the carbide alloy transiting rod is aimed at the slow fit of transiting rod containing hole, after fit is finished, allow carbide alloy transiting rod and motor connecting portion slowly cool off;
(4), butt joint emery wheel connecting portion and carbide alloy transiting rod: adopt welding manner that the emery wheel connecting portion is fixedlyed connected with the carbide alloy transiting rod, for guaranteeing each rotary surface axis of emery wheel spreading axle and the axiality of locating datum axis, the emery wheel spreading axle of finishing assembling is carried out grinding;
(5), check: check beating of each cylindrical of emery wheel spreading axle, the emery wheel spreading axle that is up to the standards is installed emery wheel then by being threaded on the drive motors, forms the high speed bistrique.
When carrying out the hot extrusion step, the carbide alloy transiting rod places lime slowly to cool off carbide alloy transiting rod and motor connecting portion after aiming at transiting rod containing hole fit.
When butt joint emery wheel connecting portion and carbide alloy transiting rod, adopt the silver soldering mode that the emery wheel connecting portion is fixedlyed connected with the carbide alloy transiting rod.
A kind of high speed bistrique of processing precise hole, comprise drive motors, emery wheel spreading axle, emery wheel nail and emery wheel, described emery wheel spreading axle is made up of motor connecting portion, carbide alloy transiting rod and emery wheel connecting portion, offer the transiting rod containing hole on the described motor connecting portion, carbide alloy transiting rod one end is connected with the hot extrusion of motor connecting portion through the transiting rod containing hole, the other end and the welding of emery wheel connecting portion, emery wheel is connected with the emery wheel connecting portion by the emery wheel nail, and the output of drive motors is connected with the motor connecting portion.
The end that described carbide alloy transiting rod and emery wheel connecting portion join is made as conical tip, offers the conical bore corresponding with this conical tip on the emery wheel connecting portion.
The section of described carbide alloy transiting rod is circle or polygon, and the section configuration of transiting rod containing hole is corresponding with the section configuration of carbide alloy transiting rod.
Compared with prior art, the invention has the advantages that: when making emery wheel spreading axle, adopt the hot extrusion technology that the carbide alloy transiting rod is connected with the motor connecting portion, do not need on the motor connecting portion, to bore welding exhaust air technique hole, make the machining of motor connecting portion more simple, guarantee that its center of gravity is on axis, when bistrique is in the high speed rotating state, emery wheel spreading axle keeps dynamic balancing, do not produce jumping phenomena, also saved emery wheel spreading axle simultaneously and gone heavily, the operation of dynamic balance checking has been saved the expense of purchasing dynamic balance checking equipment, reduce processing cost, improved production efficiency; The stage casing of emery wheel spreading axle is made as the carbide alloy transiting rod, improved integral rigidity, the motor connecting portion and the emery wheel connecting portion at carbide alloy transiting rod two ends do not have special material requirements, can adopt high-quality structural steel, steel alloy etc., be convenient to joint face and locating surfaces such as machining screw, the conical surface, the face of cylinder, be convenient to guarantee each rotary surface axis and the axiality of locating datum axis on the part; After finishing the carbide alloy transiting rod and the hot extrusion of motor connecting portion being connected, place lime slowly to cool off carbide alloy transiting rod and motor connecting portion, guarantee the quality that hot extrusion connects.The high speed bistrique integral rigidity height of processing precise hole of the present invention, simple in structure, when being in the high speed rotating state, emery wheel can keep dynamic balancing, emery wheel spreading axle is difficult for producing flexural deformation and oscillation phenomenon during the wheel grinding precise hole, thereby guarantee the machining accuracy of precise hole, improve the crudy in hole; Improve emery wheel spreading axle rigidity, can improve grinding dosage, thereby improved the production efficiency of product processing; The section of carbide alloy transiting rod can be circle or polygon, when being circular, the section of carbide alloy transiting rod is convenient to processing, can make the carbide alloy transiting rod combine tightr during for polygon with the transiting rod containing hole of motor connecting portion, minimizing makes carbide alloy transiting rod and motor connecting portion produce loosening phenomenon under the effect of grinding force and grinding moment.
Description of drawings
Fig. 1 is the structural representation of the high speed bistrique of processing precise hole of the present invention;
Fig. 2 is the structural representation of emery wheel spreading axle of the present invention;
Fig. 3 is A-A profile of Fig. 2;
Fig. 4 is the cross section view of the section of carbide alloy transiting rod when being hexagon;
Fig. 5 is the process chart of high speed bistrique manufacture method of the present invention.
Each label is represented among the figure:
1, drive motors 2, emery wheel spreading axle
3, emery wheel 4, emery wheel nail
21, motor connecting portion 22, carbide alloy transiting rod
23, emery wheel connecting portion 211, transiting rod containing hole
The specific embodiment
To be example be described in further detail the high speed bistrique manufacture method of processing precise hole of the present invention employed high speed bistrique when to be used to process the aperture be the precise hole of Φ 5mm with manufacturing below, and technological process as shown in Figure 5.
At first, with the emery wheel connecting portion, carbide alloy transiting rod and motor connecting portion are assembled into emery wheel spreading axle, concrete making step is: (1), processing motor connecting portion and emery wheel connecting portion: select the blank of material of GCr15 for use as motor connecting portion and emery wheel connecting portion, be convenient to machining screw, the conical surface, joint face and locating surfaces such as the face of cylinder, be convenient to guarantee each rotary surface axis and the axiality of locating datum axis on the part, earlier the base substrate of two parts is made machining respectively, during processing motor connecting portion, bore the transiting rod containing hole thereon, the aperture of transiting rod containing hole is 4.2mm, during the processing grinding wheel connecting portion, end processing thereon connects the screwed hole of emery wheel nail, other end processing conical bore, after all shaping, both make integral quenching simultaneously, temper, wherein hardening heat is 830 ℃～840 ℃, and is last, again the transiting rod containing hole made milled processed;
(2), processing rigid alloy transition bar: select the blank of material of W-Co kind carbide alloy YG 8 for use as the carbide alloy transiting rod, adopt centerless grinder match grinding carbide alloy transiting rod, making the magnitude of interference of the transiting rod containing hole on itself and the motor connecting portion is 0.008mm～0.012mm;
(3), hot extrusion assembling carbide alloy transiting rod and motor connecting portion: the motor connecting portion is heated to 280 ℃～300 ℃, and insulation 30min, measure the aperture of transiting rod containing hole, at this moment, the aperture of transiting rod containing hole reaches the big 0.015mm of diameter than carbide alloy transiting rod, and the carbide alloy transiting rod is aimed at the slow fit of transiting rod containing hole.Adopt the mode of hot extrusion assembling to make the machining of motor connecting portion more simple, the center of gravity of emery wheel spreading axle is on rotating shaft, when bistrique is in the high speed rotating state, emery wheel spreading axle can keep dynamic balancing, the high speed bistrique does not produce the phenomenon of beating, also saved simultaneously emery wheel spreading axle has been gone heavily, operations such as dynamic balance checking, saved the expense of purchasing dynamic balance checking equipment, reduced processing cost, improved production efficiency, after the hot extrusion fit is finished, place lime slowly to cool off carbide alloy transiting rod and motor connecting portion, guarantee the quality that hot extrusion connects;
(4), weld wheel connecting portion and carbide alloy transiting rod: adopt the silver soldering mode that the emery wheel connecting portion is welded on the carbide alloy transiting rod, for guaranteeing each rotary surface axis of emery wheel spreading axle and the axiality of locating datum axis, the emery wheel spreading axle of finishing assembling is carried out grinding;
(5), check: check beating of emery wheel spreading axle cylindrical, emery wheel spreading axle is installed on the drive motors of lathe bistrique, and rotating speed brought up to 100000 rev/mins, spillikin (as a medical cotton stick rod) end is placed on the outer round surface of emery wheel connecting portion, the other end is placed on the palm of the hand (as long as spillikin is held up, do not apply any power), if do not feel spillikin vibration then can come into operation.
After finishing the making of emery wheel spreading axle, its motor connecting portion is connected with the drive motors of lathe bistrique, the emery wheel of mounting strap emery wheel nail (the bonding mode of emery wheel nail and emery wheel employing is connected) on the emery wheel connecting portion then, thus manufacturing of high speed bistrique of the present invention finished.This high speed bistrique can be used for processing the precise hole that the aperture is Φ 5mm.
As shown in Figure 1 to Figure 3, the high speed bistrique that the high speed bistrique manufacture method of employing processing precise hole of the present invention is made, comprise drive motors 1, emery wheel spreading axle 2, emery wheel nail 4 and emery wheel 3, emery wheel spreading axle 2 is by carbide alloy transiting rod 22, motor connecting portion 21 and emery wheel connecting portion 23 are formed, offer transiting rod containing hole 211 on the motor connecting portion 21, carbide alloy transiting rod 22 1 ends and 23 welding of emery wheel connecting portion, the other end is connected with 21 hot extrusions of motor connecting portion through transiting rod containing hole 211, emery wheel 3 is connected with emery wheel connecting portion 23 by emery wheel nail 4, and the output of drive motors 1 is connected with motor connecting portion 21.Because carbide alloy transiting rod 22 adopts hot extrusion to be connected with motor connecting portion 21, the rigidity of emery wheel spreading axle 2 is improved, center of gravity drops on the center line of spreading axle, make emery wheel when the high speed rotating state, can keep dynamic balancing, emery wheel spreading axle 2 is difficult for producing flexural deformation and oscillation phenomenon during emery wheel 3 grinding precise holes, improve the rotating accuracy of emery wheel 3, guaranteed the crudy of precise hole; Emery wheel spreading axle 2 rigidity improve, and the grinding dosage of emery wheel 3 is also increased, and have improved the production efficiency of product processing accordingly.Carbide alloy transiting rod 22 is made as conical tip with the end that emery wheel connecting portion 23 joins, emery wheel connecting portion 23 is provided with the conical bore corresponding with this conical tip, the section configuration of carbide alloy transiting rod 22 and transiting rod containing hole 211 is circular, is convenient to processing.
The carbide alloy transiting rod 22 of the high speed bistrique of processing precise hole of the present invention and the section of transiting rod containing hole 211 can also be polygon as shown in Figure 4, the section of carbide alloy transiting rod 22 can make carbide alloy transiting rod 22 combine tightr with the transiting rod containing hole 211 of motor connecting portion 21 during for polygon, can reduce under grinding force and grinding moment loading, carbide alloy transiting rod and motor connecting portion produce loosening phenomenon.This type of simple replacement all should be considered as the replacement that is equal to of the present invention, all should drop within protection scope of the present invention.
Claims (7)
1, a kind of high speed bistrique manufacture method of processing precise hole, it is characterized in that: it is that emery wheel connecting portion, carbide alloy transiting rod and motor connecting portion are assembled into emery wheel spreading axle, wherein carbide alloy transiting rod one end adopts hot extrusion to be connected with the motor connecting portion, the other end and emery wheel connecting portion adopt and are welded to connect, after finishing the making of emery wheel spreading axle, the motor connecting portion is connected with the output of drive motors, and the emery wheel connecting portion is connected with emery wheel by the emery wheel nail.
2, the high speed bistrique manufacture method of processing precise hole according to claim 1, it is characterized in that: the concrete making step of emery wheel spreading axle is:
(1), processing motor connecting portion and emery wheel connecting portion: the base substrate to two parts is made machining respectively, during processing motor connecting portion, bore the transiting rod containing hole thereon, the aperture of transiting rod containing hole is that 3.4mm～12mm makes integral quenching, temper after shaping, and again the transiting rod containing hole is done grinding;
(2), processing rigid alloy transition bar: adopt centerless grinder match grinding carbide alloy transiting rod, making the magnitude of interference of the transiting rod containing hole on itself and the motor connecting portion is 0.008mm～0.025mm;
(3), hot extrusion assembling carbide alloy transiting rod and motor connecting portion: the motor connecting portion is heated to 280 ℃～300 ℃, and insulation 20min～40min, measure the aperture of transiting rod containing hole, when the aperture of transiting rod containing hole reaches the big 0.010mm of diameter than carbide alloy transiting rod～0.035mm, the carbide alloy transiting rod is aimed at the slow fit of transiting rod containing hole, after fit is finished, allow carbide alloy transiting rod and motor connecting portion slowly cool off;
(4), butt joint emery wheel connecting portion and carbide alloy transiting rod: adopt welding manner that the emery wheel connecting portion is fixedlyed connected with the carbide alloy transiting rod, for guaranteeing each rotary surface axis of emery wheel spreading axle and the axiality of locating datum axis, the emery wheel spreading axle of finishing assembling is carried out grinding;
(5), check: beating of check emery wheel spreading axle cylindrical can be connected composition high speed bistrique with drive motors with emery wheel by the emery wheel spreading axle of checking.
3, the high speed bistrique manufacture method of processing precise hole according to claim 2, it is characterized in that: when carrying out the hot extrusion step, the carbide alloy transiting rod places lime slowly to cool off carbide alloy transiting rod and motor connecting portion after aiming at transiting rod containing hole fit.
4, according to the high speed bistrique manufacture method of claim 2 or 3 described processing precise holes, it is characterized in that: when butt joint emery wheel connecting portion and carbide alloy transiting rod, adopt the silver soldering mode that the emery wheel connecting portion is fixedlyed connected with the carbide alloy transiting rod.
5, a kind of high speed bistrique of processing precise hole, comprise drive motors (1), emery wheel spreading axle (2), emery wheel nail (4) and emery wheel (3), described emery wheel spreading axle (2) is by motor connecting portion (21), carbide alloy transiting rod (22) and emery wheel connecting portion (23) are formed, it is characterized in that: offer transiting rod containing hole (211) on the described motor connecting portion (21), carbide alloy transiting rod (22) one ends are connected with motor connecting portion (21) hot extrusion through transiting rod containing hole (211), the other end and emery wheel connecting portion (23) welding, emery wheel (3) is connected with emery wheel connecting portion (23) by emery wheel nail (4), and the output of drive motors (1) is connected with motor connecting portion (21).
6, the high speed bistrique of processing precise hole according to claim 5, it is characterized in that: described carbide alloy transiting rod (22) is made as conical tip with the end that emery wheel connecting portion (23) joins, and the emery wheel connecting portion offers the conical bore corresponding with this conical tip on (23).
7, the high speed bistrique of processing precise hole according to claim 6, it is characterized in that: the section of described carbide alloy transiting rod (22) is circle or polygon, and the section configuration of transiting rod containing hole (211) is corresponding with the section configuration of carbide alloy transiting rod (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102374916A CN101456168B (en) | 2008-12-30 | 2008-12-30 | Manufacture method of high-speed grinding head for processing precise hole and high-speed grinding head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102374916A CN101456168B (en) | 2008-12-30 | 2008-12-30 | Manufacture method of high-speed grinding head for processing precise hole and high-speed grinding head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101456168A true CN101456168A (en) | 2009-06-17 |
| CN101456168B CN101456168B (en) | 2010-08-11 |
Family
ID=40767435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102374916A Expired - Fee Related CN101456168B (en) | 2008-12-30 | 2008-12-30 | Manufacture method of high-speed grinding head for processing precise hole and high-speed grinding head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101456168B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105922090A (en) * | 2016-04-27 | 2016-09-07 | 中航动力株洲航空零部件制造有限公司 | Grinding wheel rod for high precision inner hole processing and processing method |
| CN112621110A (en) * | 2020-11-13 | 2021-04-09 | 汉江工具有限责任公司 | Method for processing and measuring small-module gear measuring pin |
-
2008
- 2008-12-30 CN CN2008102374916A patent/CN101456168B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105922090A (en) * | 2016-04-27 | 2016-09-07 | 中航动力株洲航空零部件制造有限公司 | Grinding wheel rod for high precision inner hole processing and processing method |
| CN105922090B (en) * | 2016-04-27 | 2019-09-20 | 中航动力株洲航空零部件制造有限公司 | Pole wheel and processing method for high precision inner-pore processing |
| CN112621110A (en) * | 2020-11-13 | 2021-04-09 | 汉江工具有限责任公司 | Method for processing and measuring small-module gear measuring pin |
| CN112621110B (en) * | 2020-11-13 | 2024-05-03 | 汉江工具有限责任公司 | Method for machining and measuring small-modulus gear measuring pin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101456168B (en) | 2010-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104723045B (en) | A kind of processing technique of the big aspect ratio axle of inner bore of step | |
| CN104227345B (en) | Processing method for high-precision thin step shaft and grinding chuck for processing method | |
| CN102139464B (en) | Plug matched with end part of shaft to be ground | |
| CN207358298U (en) | Fixture for Gear-shaving is positioned for gear gapless | |
| CN109531244A (en) | A kind of vibration damping processing method of thin-walled long cantilever part | |
| CN103447771B (en) | A kind of processing method of piston rod assembly | |
| CN101456168B (en) | Manufacture method of high-speed grinding head for processing precise hole and high-speed grinding head | |
| CN204867481U (en) | Segmentation composite construction damping vibration attenuation boring bar is supported in area | |
| CN205414837U (en) | Interior arc surface supersound rolling tool head | |
| CN110369971B (en) | Grinding rod machining process with externally threaded taper shank for grinding machine | |
| CN202207898U (en) | Slender workpiece centering system of machining cutting machine tool | |
| CN101722445A (en) | Super-long inner hole grinding tool of revolved body | |
| CN102699394B (en) | Sleeve embedding groove type processing tool adopting clamp spring connecting structure | |
| CN112621111B (en) | Processing method of large-diameter conical core rod with holes | |
| CN201220347Y (en) | Axle end centre hole superimposing structure | |
| CN210649694U (en) | High-precision turning auxiliary jig | |
| CN201338221Y (en) | High-speed grinding head used for processing small precise hole | |
| CN111015088A (en) | Processing method of high-precision deep-hole step shaft part | |
| CN202356896U (en) | Elastic workpiece chuck for turning-lathe threading die machining | |
| CN101293324A (en) | Spark-erosion machininging clamping apparatus square edged orifice of valve housing in electrohydraulic servo valve | |
| CN104993649B (en) | Large-sized water turbine generator spiral groove type collector ring processing technology | |
| CN201295772Y (en) | Main axle set for high precision special purpose machine | |
| CN110681928A (en) | Part grinding quick-change clamp and grinding method | |
| CN212495444U (en) | Replaceable back boring tool | |
| CN201862880U (en) | Electrical discharge machining fixture for square holes of valve bushes in electro-hydraulic servo valves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: HUNAN INDUSTRIAL PROFESSIONAL TECHNOLOGY ACADEME Free format text: FORMER OWNER: ZHU DAILI Effective date: 20091002 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20091002 Address after: Zip code, Hunan science and Education Park, Changsha, China: 410208 Applicant after: Hunan Industry Polytechnic Co-applicant after: Zhu Daili Co-applicant after: Ren Dong Address before: Hunan Industry Polytechnic, Changsha, Hunan, China, 410208 Applicant before: Zhu Dai Li Co-applicant before: Ren Dong |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20121230 |