CN203304948U - Electrode holder and machine tool - Google Patents
Electrode holder and machine tool Download PDFInfo
- Publication number
- CN203304948U CN203304948U CN2013203512695U CN201320351269U CN203304948U CN 203304948 U CN203304948 U CN 203304948U CN 2013203512695 U CN2013203512695 U CN 2013203512695U CN 201320351269 U CN201320351269 U CN 201320351269U CN 203304948 U CN203304948 U CN 203304948U
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- chuck
- spacer
- electrode
- perforation
- clamping seat
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Abstract
The utility model belongs to the field of holders, and provides an electrode holder and a machine tool. The electrode holder comprises a chuck, a locating sheet and a chuck clamping base, the chuck is rectangular, and a groove used for mounting an electrode base is formed in the upper end of the chuck. The locating sheet is locked on the lower surface of the chuck through a screw, and four penetrating holes are formed in the locating sheet and are symmetrical relative to the central axis of the locating sheet. The chuck clamping base comprises a base, four locating protruding blocks corresponding to the penetrating holes of the locating sheet are arranged on the base, and the locating protruding blocks are arranged in the corresponding penetrating holes in a penetrating mode to locate the chuck. According to the electrode holder and the machine tool, automatic correction and centering can be achieved in the EDM electrode processing process, the time of manual correction is saved, and efficiency is improved.
Description
Technical field
The utility model relates to a kind of fixture, relates in particular to a kind of electrode holder and lathe.
Background technology
EDM(Electrical Discharge Machining, spark machined) processing is the special process method of utilizing the galvanic action ablation conductive material produced while being immersed in two interpolar pulsed discharge in working solution, claims again electric discharge processing or galvanic corrosion processing.
Carry out electrical spark working man-hour, tool-electrode and workpiece connect respectively the two poles of the earth of the pulse power, and immerse in working solution, or working solution is filled with to discharging gap.To the workpiece feeding, when two interelectrode gaps reached certain distance, the pulse voltage applied on two electrodes punctured working solution by gap automatic controlling system tool-electrode, produced spark discharge with processing work.Under the condition in constant discharge gap between retaining tool electrode and workpiece, on one side the ablation workpiece metal, make tool-electrode constantly to the workpiece feeding on one side, finally just process the shape corresponding with the tool-electrode shape and come.Therefore, as long as change the shape of tool-electrode and the relative motion mode between tool-electrode and workpiece, just can process the profile of various complexity.
The electrode that the EDM machining is used is by CNC(Computer numerical control, computer digital control machine tool) carry out processing, but the fixture of CNC and EDM clamping electrode is different, there is no common mounting and clamping system.Therefore need to do a standard station during CNC machined electrode, carry out manual correcting electrode and branch center, waste process time, efficiency is lower.
The utility model content
For above-mentioned defect, the purpose of this utility model is to provide a kind of EDM electrode holder and lathe, and it can add and can realize automatic calibration and alignment at the EDM electrode man-hour, saves the time of manual synchronizing, has improved efficiency.
To achieve these goals, the utility model provides a kind of electrode holder, comprises chuck, spacer and chuck clamping seat, and the rectangular body of described chuck, and described chuck upper end is provided with the groove for the installing electrodes seat; Described spacer is by screw locking in described chuck lower surface, and described spacer is provided with four perforation, and described four perforation are with respect to the central shaft symmetry of described spacer; Described chuck clamping seat comprises base, and described base is provided with four locating convex blocks corresponding with the perforation of described spacer, and described locating convex block is arranged in corresponding perforation so that described chuck is positioned.
According to electrode holder of the present utility model, the centre of described chuck lower surface also is provided with cylinder, the described cylinder of the correspondence of described spacer is provided with the first through hole, the corresponding described cylinder of described chuck clamping seat is provided with the second through hole, and described cylinder passes described the first through hole and is contained in described the second through hole; According to electrode holder of the present utility model, described chuck clamping seat is provided with four support columns with respect to its central shaft symmetry, and described locating convex block is arranged on described support column.
According to electrode holder of the present utility model, the groove of chuck upper end is groove, and the sidewall of described groove is provided with screwed hole, and described electrode tip holder is fixed in described groove by the screw that passes described screwed hole.
According to electrode holder of the present utility model, described spacer is the rectangle with described chuck underside shape adaptation; The base of described chuck clamping seat is cylindrical.
The utility model also provides a kind of lathe, for the EDM electrode is carried out to CNC processing, this EDM electrode is fixed in described lathe by electrode holder, described electrode holder comprises chuck, spacer and chuck clamping seat, the rectangular body of described chuck, and described chuck upper end is provided with the groove for the installing electrodes seat; Described spacer is by screw locking in described chuck lower surface, and described spacer is provided with four perforation, and described four perforation are with respect to the central shaft symmetry of described spacer; Described chuck clamping seat comprises base, and described base is provided with four locating convex blocks corresponding with the perforation of described spacer, and described locating convex block is arranged in corresponding perforation so that described chuck is positioned.
According to lathe of the present utility model, the centre of described chuck lower surface also is provided with cylinder, the described cylinder of the correspondence of described spacer is provided with the first through hole, the corresponding described cylinder of described chuck clamping seat is provided with the second through hole, and described cylinder passes described the first through hole and is contained in described the second through hole; According to lathe of the present utility model, described chuck clamping seat is provided with four support columns with respect to its central shaft symmetry, and described locating convex block is arranged on described support column.
According to lathe of the present utility model, it is characterized in that, the groove of chuck upper end is groove, and the sidewall of described groove is provided with screwed hole, and described electrode tip holder is fixed in described groove by the screw that passes described screwed hole; Described spacer is the rectangle with described chuck underside shape adaptation; The base of described chuck clamping seat is cylindrical.
The utility model also provides another kind of lathe, for product is carried out to EDM processing, it comprises the EDM electrode, described EDM electrode is fixed in described lathe by electrode holder, described electrode holder comprises chuck, spacer and chuck clamping seat, the rectangular body of described chuck, and described chuck upper end is provided with the groove for the installing electrodes seat; Described spacer is by screw locking in described chuck lower surface, and described spacer is provided with four perforation, and described four perforation are with respect to the central shaft symmetry of described spacer; Described chuck clamping seat comprises base, and described base is provided with four locating convex blocks corresponding with the perforation of described spacer, and described locating convex block is arranged in corresponding perforation so that described chuck is positioned.
The utility model is fixed on the EDM electrode tip holder on chuck, this chuck below is fixedly installed spacer, spacer by screw locking in the chuck lower surface, spacer is provided with four perforation corresponding with the locating convex block of chuck clamping seat, and four perforation are with respect to the central shaft symmetry of rectangle spacer, and four locating convex blocks are with respect to the base central shaft symmetry of chuck clamping seat, it is interior so that chuck is positioned that locating convex block is arranged in corresponding perforation, thereby the EDM electrode tip holder is fixed in the XY direction.When CNC processing EDM electrode, electrode tip holder is fixed on chuck, makes the copper service message utmost point, electrode tip holder and chuck as a whole, then chuck is placed on to the enterprising column electrode processing of chuck clamping seat; And chuck clamping seat is installed on the processing head of EDM, electrode discharge adds and man-hour the integral body that the copper service message utmost point, electrode tip holder and chuck form is fixed on chuck clamping seat, while while making CNC processing EDM electrode, carrying out Mould Machining with employing EDM electrode, be identical location, thereby without correcting electrode again.Whereby, the utility model can add and can realize automatic calibration and alignment at the EDM electrode man-hour, saves the time of manual synchronizing, has improved efficiency.
The accompanying drawing explanation
Fig. 1 is the perspective view of the electrode holder of a kind of embodiment of the utility model;
Fig. 2 is the explosive view of electrode holder in Fig. 1.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment mono-
As Fig. 1 ~ shown in Figure 2, a kind of EDM electrode holder 100 of the utility model, comprise chuck 10, spacer 20 and chuck clamping seat 30.
Chuck 10, rectangular body, chuck 10 upper ends are provided with the groove 11 for installing electrodes seat 40.The concrete shape of chuck 10 can carry out adaptation according to the shape of electrode tip holder 40.In embodiment illustrated in figures 1 and 2, groove 11 is groove, and the sidewall of groove is provided with screwed hole 12, and electrode tip holder 40 is fixed in groove by the screw 13 that passes screwed hole 12.On electrode tip holder 40, also be fixed with the copper service message utmost point 50.
Chuck clamping seat 30, comprise base 31, and base 31 is preferably cylindrical.Base 31 is provided with four locating convex blocks corresponding with the perforation 21 of spacer 20 32, and locating convex block 32 is arranged in corresponding perforation 21 so that chuck 10 is positioned.This locating convex block 32 also is preferably the rectangle locating convex block, and its setting party is to being also directions X or Y-direction.Preferably, chuck clamping seat 30 is provided with four support columns 33 with respect to its central shaft symmetry, and locating convex block 32 is arranged on support column 33.Because chuck 10 and spacer 20 are integrated by screw locking, so locating convex block 32 is located in the location that can realize 30 pairs of chucks 10 of chuck clamping seat in perforation 21.And due to four perforation 21 symmetries of the central shaft with respect to spacer 20, also realized in the XY direction fixing to chuck 10, guaranteed the positioning accurate parasexuality of chuck 10.
Preferably, the centre of chuck 10 lower surfaces also is provided with cylinder 14, the corresponding circle cylinder 14 of spacer 20 is provided with the first through hole 22, and chuck clamping seat 30 corresponding circle cylinders 14 are provided with the second through hole 34, and cylinder 14 passes the first through hole 22 and is contained in the second through hole 34.Thereby, when carrying out chuck 10 installation, can carry out pre-determined bit by cylinder 14.
When CNC processing EDM electrode, electrode tip holder 40 is fixed on chuck, makes the copper service message utmost point 50, electrode tip holder 40 and chuck 10 as a whole, then chuck 10 is placed on to the enterprising column electrode processing of chuck clamping seat 30; And chuck clamping seat 30 is installed on the processing head of EDM, electrode discharge adds and man-hour the copper service message utmost point 50, electrode tip holder 40 and the integral body that chuck 10 forms is fixed on chuck clamping seat 30, while while making CNC processing EDM electrode, carrying out Mould Machining with employing EDM electrode, be identical location, thereby without correcting electrode again.Whereby, the utility model can add and can realize automatic calibration and alignment at the EDM electrode man-hour, saves the time of manual synchronizing, has improved efficiency.
Embodiment bis-
The present embodiment provides a kind of lathe, and for the EDM electrode is carried out to CNC processing, this EDM electrode is fixed in described lathe by electrode holder, and electrode holder comprises: chuck, and rectangular body, the chuck upper end is provided with the groove for the installing electrodes seat; Spacer, in the chuck lower surface, spacer is provided with four perforation by screw locking, and four perforation are with respect to the central shaft symmetry of spacer; Chuck clamping seat, comprise base, and base is provided with four locating convex blocks corresponding with the perforation of spacer, and locating convex block is arranged in corresponding perforation so that chuck is positioned.
Preferably, the centre of chuck lower surface also is provided with cylinder, and the corresponding circle cylinder of spacer is provided with the first through hole, and chuck clamping seat corresponding circle cylinder is provided with the second through hole, and cylinder passes the first through hole and is contained in the second through hole.
Preferably, chuck clamping seat is provided with four support columns with respect to its central shaft symmetry, and locating convex block is arranged on support column.
Preferably, the groove of chuck upper end is groove, and the sidewall of groove is provided with screwed hole, and electrode tip holder is fixed in groove by the screw that passes screwed hole; Spacer is the rectangle with chuck lower surface adaptation; The base of chuck clamping seat is cylindrical.
This electrode holder is described in detail at embodiment mono-, therefore do not repeat them here.
Embodiment tri-
The present embodiment provides a kind of lathe, and for product is carried out to EDM processing, it comprises the EDM electrode, and the EDM electrode is fixed in lathe by electrode holder, and electrode holder comprises: chuck, and rectangular body, the chuck upper end is provided with the groove for the installing electrodes seat; Spacer, in the chuck lower surface, spacer is provided with four perforation by screw locking, and four perforation are with respect to the central shaft symmetry of spacer; Chuck clamping seat, comprise base, and base is provided with four locating convex blocks corresponding with the perforation of spacer, and locating convex block is arranged in corresponding perforation so that chuck is positioned.This EDM electrode holder is described in detail at embodiment mono-, therefore do not repeat them here.
In sum, the utility model is fixed on the EDM electrode tip holder on chuck, this chuck below is fixedly installed spacer, spacer by screw locking in the chuck lower surface, spacer is provided with four perforation corresponding with the locating convex block of chuck clamping seat, and four perforation are with respect to the central shaft symmetry of rectangle spacer, and four locating convex blocks are with respect to the base central shaft symmetry of chuck clamping seat, it is interior so that chuck is positioned that locating convex block is arranged in corresponding perforation, thereby the EDM electrode tip holder is fixed in the XY direction.When CNC processing EDM electrode, electrode tip holder is fixed on chuck, makes the copper service message utmost point, electrode tip holder and chuck as a whole, then chuck is placed on to the enterprising column electrode processing of chuck clamping seat; And chuck clamping seat is installed on the processing head of EDM, electrode discharge adds and man-hour the integral body that the copper service message utmost point, electrode tip holder and chuck form is fixed on chuck clamping seat, while while making CNC processing EDM electrode, carrying out Mould Machining with employing EDM electrode, be identical location, thereby without correcting electrode again.Whereby, the utility model can add and can realize automatic calibration and alignment at the EDM electrode man-hour, saves the time of manual synchronizing, has improved efficiency.
Certainly; the utility model also can have other various embodiments; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (10)
1. an electrode holder, is characterized in that, comprises chuck, spacer and chuck clamping seat, and the rectangular body of chuck, and the chuck upper end is provided with the groove for the installing electrodes seat; Spacer is by screw locking in the chuck lower surface, and spacer is provided with four perforation, and four perforation are with respect to the central shaft symmetry of spacer; Chuck clamping seat comprises base, and base is provided with four locating convex blocks corresponding with the perforation of spacer, and locating convex block is arranged in corresponding perforation so that chuck is positioned.
2. electrode holder according to claim 1, it is characterized in that, the centre of described chuck lower surface also is provided with cylinder, the described cylinder of the correspondence of described spacer is provided with the first through hole, the corresponding described cylinder of described chuck clamping seat is provided with the second through hole, and described cylinder passes described the first through hole and is contained in described the second through hole.
3. electrode holder according to claim 1, is characterized in that, described chuck clamping seat is provided with four support columns with respect to its central shaft symmetry, and described locating convex block is arranged on described support column.
4. electrode holder according to claim 1, is characterized in that, the groove of chuck upper end is groove, and the sidewall of described groove is provided with screwed hole, and described electrode tip holder is fixed in described groove by the screw that passes described screwed hole.
5. electrode holder according to claim 1, is characterized in that, described spacer is the rectangle with described chuck underside shape adaptation; The base of described chuck clamping seat is cylindrical.
6. lathe, for the EDM electrode is carried out to CNC processing, this EDM electrode is fixed in described lathe by electrode holder, it is characterized in that, described electrode holder comprises chuck, spacer and chuck clamping seat, the rectangular body of described chuck, and described chuck upper end is provided with the groove for the installing electrodes seat; Described spacer is by screw locking in described chuck lower surface, and described spacer is provided with four perforation, and described four perforation are with respect to the central shaft symmetry of described spacer; Described chuck clamping seat comprises base, and described base is provided with four locating convex blocks corresponding with the perforation of described spacer, and described locating convex block is arranged in corresponding perforation so that described chuck is positioned.
7. lathe according to claim 6, it is characterized in that, the centre of described chuck lower surface also is provided with cylinder, the described cylinder of the correspondence of described spacer is provided with the first through hole, the corresponding described cylinder of described chuck clamping seat is provided with the second through hole, and described cylinder passes described the first through hole and is contained in described the second through hole.
8. lathe according to claim 6, is characterized in that, described chuck clamping seat is provided with four support columns with respect to its central shaft symmetry, and described locating convex block is arranged on described support column.
9. lathe according to claim 6, is characterized in that, the groove of chuck upper end is groove, and the sidewall of described groove is provided with screwed hole, and described electrode tip holder is fixed in described groove by the screw that passes described screwed hole; Described spacer is the rectangle with described chuck underside shape adaptation; The base of described chuck clamping seat is cylindrical.
10. lathe, for product is carried out to EDM processing, it comprises the EDM electrode, described EDM electrode is fixed in described lathe by electrode holder, it is characterized in that, described electrode holder comprises chuck, spacer and chuck clamping seat, the rectangular body of described chuck, and described chuck upper end is provided with the groove for the installing electrodes seat; Described spacer is by screw locking in described chuck lower surface, and described spacer is provided with four perforation, and described four perforation are with respect to the central shaft symmetry of described spacer; Described chuck clamping seat comprises base, and described base is provided with four locating convex blocks corresponding with the perforation of described spacer, and described locating convex block is arranged in corresponding perforation so that described chuck is positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203512695U CN203304948U (en) | 2013-06-18 | 2013-06-18 | Electrode holder and machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203512695U CN203304948U (en) | 2013-06-18 | 2013-06-18 | Electrode holder and machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203304948U true CN203304948U (en) | 2013-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013203512695U Expired - Fee Related CN203304948U (en) | 2013-06-18 | 2013-06-18 | Electrode holder and machine tool |
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| CN (1) | CN203304948U (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862318A (en) * | 2014-02-24 | 2014-06-18 | 东莞劲胜精密组件股份有限公司 | Method for conveying electrode plates by tools |
| CN103978384A (en) * | 2014-05-21 | 2014-08-13 | 苏州鑫荣健身器材有限公司 | Electrode clamp |
| CN104874875A (en) * | 2014-02-27 | 2015-09-02 | 上海核工程研究设计院 | Side hole machining electrode clamp |
| CN105149711A (en) * | 2015-09-28 | 2015-12-16 | 勋龙精密模具(昆山)有限公司 | Correction-free electrode machining clamp |
| CN105665850A (en) * | 2014-11-20 | 2016-06-15 | 中国航空工业第六八研究所 | Electromachining method for machining square hole in wall of round hole |
| CN106031955A (en) * | 2015-03-19 | 2016-10-19 | 苏州汉扬精密电子有限公司 | Electrode structure |
| CN106424992A (en) * | 2016-08-30 | 2017-02-22 | 四川科思精密模具有限公司 | Electrode T-shaped clamp base |
| TWI572437B (en) * | 2014-11-27 | 2017-03-01 | 楊啟明 | Quick-release device for quickly positioning a vice on a platform |
| CN106624599A (en) * | 2016-12-29 | 2017-05-10 | 山东钢铁股份有限公司 | Hot assembly tooling for coupling |
| CN106925850A (en) * | 2017-05-03 | 2017-07-07 | 广东工业大学 | A kind of die cavity electrolytic machining device |
| CN107186649A (en) * | 2017-07-12 | 2017-09-22 | 天津市中环三峰电子有限公司 | A kind of fixing device and application method for detecting electrode |
| CN107414222A (en) * | 2017-08-21 | 2017-12-01 | 郑就 | A kind of electrode clamping device and clamping method |
| CN107717517A (en) * | 2016-08-11 | 2018-02-23 | 苏州汉扬精密电子有限公司 | Electrode quick-replaceable tool external member |
| CN108194043A (en) * | 2018-01-30 | 2018-06-22 | 贵州理工学院 | The evaluation of coal mine Roof And Floor Stability drills through device with different-diameter core |
| CN108746906A (en) * | 2018-06-28 | 2018-11-06 | 常州星宇车灯股份有限公司 | A kind of tooling of auxiliary small workpiece magnetic support clamping |
| CN109048440A (en) * | 2018-09-27 | 2018-12-21 | 安徽宁国中鼎模具制造有限公司 | An a kind of 3R fixture clamping blank material point middle auxiliary clamp |
| CN109909775A (en) * | 2019-04-30 | 2019-06-21 | 苏州市职业大学 | A kind of fixture of triple-valve body |
| CN110560812A (en) * | 2019-09-17 | 2019-12-13 | 格力电器（武汉）有限公司 | electrical discharge machining clamp and method |
| CN113732419A (en) * | 2021-09-29 | 2021-12-03 | 中国航发动力股份有限公司 | Method and device for machining process groove |
-
2013
- 2013-06-18 CN CN2013203512695U patent/CN203304948U/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862318B (en) * | 2014-02-24 | 2016-03-09 | 东莞劲胜精密组件股份有限公司 | A kind of method utilizing tool to transport electrode slice |
| CN103862318A (en) * | 2014-02-24 | 2014-06-18 | 东莞劲胜精密组件股份有限公司 | Method for conveying electrode plates by tools |
| CN104874875A (en) * | 2014-02-27 | 2015-09-02 | 上海核工程研究设计院 | Side hole machining electrode clamp |
| CN103978384A (en) * | 2014-05-21 | 2014-08-13 | 苏州鑫荣健身器材有限公司 | Electrode clamp |
| CN105665850A (en) * | 2014-11-20 | 2016-06-15 | 中国航空工业第六八研究所 | Electromachining method for machining square hole in wall of round hole |
| TWI572437B (en) * | 2014-11-27 | 2017-03-01 | 楊啟明 | Quick-release device for quickly positioning a vice on a platform |
| CN106031955A (en) * | 2015-03-19 | 2016-10-19 | 苏州汉扬精密电子有限公司 | Electrode structure |
| CN105149711A (en) * | 2015-09-28 | 2015-12-16 | 勋龙精密模具(昆山)有限公司 | Correction-free electrode machining clamp |
| CN107717517A (en) * | 2016-08-11 | 2018-02-23 | 苏州汉扬精密电子有限公司 | Electrode quick-replaceable tool external member |
| CN106424992A (en) * | 2016-08-30 | 2017-02-22 | 四川科思精密模具有限公司 | Electrode T-shaped clamp base |
| CN106424992B (en) * | 2016-08-30 | 2018-04-10 | 四川科思精密模具有限公司 | The T-shaped holder of electrode |
| CN106624599A (en) * | 2016-12-29 | 2017-05-10 | 山东钢铁股份有限公司 | Hot assembly tooling for coupling |
| CN106925850B (en) * | 2017-05-03 | 2019-01-01 | 广东工业大学 | A kind of type chamber electrolytic machining device |
| CN106925850A (en) * | 2017-05-03 | 2017-07-07 | 广东工业大学 | A kind of die cavity electrolytic machining device |
| CN107186649A (en) * | 2017-07-12 | 2017-09-22 | 天津市中环三峰电子有限公司 | A kind of fixing device and application method for detecting electrode |
| CN107414222A (en) * | 2017-08-21 | 2017-12-01 | 郑就 | A kind of electrode clamping device and clamping method |
| CN107414222B (en) * | 2017-08-21 | 2023-06-09 | 郑就 | Electrode clamping device and clamping method |
| CN108194043A (en) * | 2018-01-30 | 2018-06-22 | 贵州理工学院 | The evaluation of coal mine Roof And Floor Stability drills through device with different-diameter core |
| CN108194043B (en) * | 2018-01-30 | 2023-11-03 | 贵州理工学院 | Device is got with different diameter core drills to colliery top bottom plate stability evaluation |
| CN108746906A (en) * | 2018-06-28 | 2018-11-06 | 常州星宇车灯股份有限公司 | A kind of tooling of auxiliary small workpiece magnetic support clamping |
| CN109048440A (en) * | 2018-09-27 | 2018-12-21 | 安徽宁国中鼎模具制造有限公司 | An a kind of 3R fixture clamping blank material point middle auxiliary clamp |
| CN109909775A (en) * | 2019-04-30 | 2019-06-21 | 苏州市职业大学 | A kind of fixture of triple-valve body |
| CN110560812A (en) * | 2019-09-17 | 2019-12-13 | 格力电器（武汉）有限公司 | electrical discharge machining clamp and method |
| CN113732419A (en) * | 2021-09-29 | 2021-12-03 | 中国航发动力股份有限公司 | Method and device for machining process groove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20200618 |