CN102554379B - Electric spark machining device for superhard cutting tools and operation method - Google Patents
Electric spark machining device for superhard cutting tools and operation method Download PDFInfo
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- CN102554379B CN102554379B CN2012100042255A CN201210004225A CN102554379B CN 102554379 B CN102554379 B CN 102554379B CN 2012100042255 A CN2012100042255 A CN 2012100042255A CN 201210004225 A CN201210004225 A CN 201210004225A CN 102554379 B CN102554379 B CN 102554379B
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- 238000003754 machining Methods 0.000 title claims abstract description 23
- 238000005520 cutting process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010892 electric spark Methods 0.000 title claims abstract description 15
- 239000000203 mixture Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
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- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 230000001105 regulatory effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
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Abstract
The invention relates to an electric spark machining device for superhard cutting tools and an operation method. The electric spark machining device comprises a precision numerical control electric spark machining machine tool, and a conventional rotating worktable, a rotating motor and a servo system are arranged on a body of the machine tool. The electric spark machining device is characterized in that a three-coordinate worktable is further arranged on the body of the machine tool and connected with a cross sliding table through a connecting shaft, a rotating electrode is arranged on the cross sliding table, the three-coordinate worktable comprises an X axis, a Y axis and a Z axis which are mutually orthogonal, the X axis and the Y axis are horizontal, the Z axis is perpendicular to a horizontal plane comprising the X axis and the Y axis, the cross sliding table is arranged between the rotating worktable and the three-coordinate worktable and comprises a U axis and a V axis which are mutually orthogonal, the U axis is parallel to the X axis, the V axis is parallel to the Y axis, the connecting shaft is perpendicularly connected with the X axis and the V axis and is parallel to the Z axis, and the rotating electrode is vertically arranged at the bottom of the U axis. A large amount of coordinate conversion calculation is omitted, the tools can be simply generated, machined and programmed, and the electric spark machining device can be used for forming various hard tools.
Description
Technical field
The present invention relates to a kind of cutting tool machining device and method of operating, particularly about a kind of electric spark machining device for superhard cutting tools and method of operating that can guarantee that tool clearance is constant.
Background technology
Accurate digital control Electric Discharge Machining lathe is one of visual plant of accurate special processing technology, be mainly used in processing the unmanageable superhard material of traditional mechanical processing machine and fragile material, significant to precision optical machinery, automobile, microelectronic product, aerospace precision component and precision die.Electrical spark working man-hour is without cutting force; Do not produce the defects such as burr and tool marks rill; The tool-electrode material is without harder than workpiece material; Therefore the processing of superhard cutter is the another successful Application field of multi-axis linkage numerical control spark erosion technique.
Along with the raising of processing work quality requirement, the requirement in the shape of tool, precision and the service life that machining is used also increases thereupon.A lot of workpiece processing is mostly straight forming one time, and therefore, the cutter cutter head of processing work adopts the superhard material that hardness is high, wearability is good more and more, and shape also mostly is three-dimensional space curved surface, processed complex.The superhard special-shaped molding cutter of many complex contours, as round bottom cutter, edge iron, drawer lock cutter, step cutter etc., all have the side profile of a shaped form, and the side profile of these cutters can not draw a straight line as common milling cutter, but a curve.As shown in Figure 1, be a kind of special-shaped molding cutter 1 often used in the carpenter, its cutter head is shaped as hemispherical, and blade is the revolution curve.Current electric spark machine tool commonly used, the five axle edmcs as VOLLMER company, what when this class cutter of processing, adopt is method for processing forming, first on lathe one of processing similar with the non-rectangular cross-section radian, cross section is the electrode of curved surface, then carries out moulding and the sharpening of cutting edge; The shortcoming that this processing method exists is that the curvature portion relief angle of processed cutter is inconsistent.As shown in Figure 2, after 2 pairs of processed cutters 3 of shaped electrode carry out method of forming processing, the relief angle at a point place is best relief angle, and the relief angle of other curvature portion will be less than a point so, at the b point, the limiting case that relief angle is 0 ° even occur.Service life and the rub proofness of cutter have so just been shortened.For relief angle is reached unanimously, can use generating instead cutting edge is processed, but traditional electric spark machine tool realizes generating processing and need to when numerical control programming, carry out a large amount of coordinate transformations, programming is difficult for realizing; And often the restriction due to the working space of lathe own makes generating be difficult for realizing.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide in a kind of process of the superhard cutter at manufacturing complex shapes, can be for generating processing provides good basis, working space is compact, the programming realization is simple, can guarantee electric spark machining device for superhard cutting tools and method of operating that tool clearance is constant.
For achieving the above object, the present invention takes following technical scheme: a kind of electric spark machining device for superhard cutting tools, it comprises accurate digital control Electric Discharge Machining lathe, be provided with conventional rotary table, electric rotating machine and servo-drive system on the lathe bed of described lathe, it is characterized in that: also be provided with the three-dimensional workbench on the lathe bed of described lathe, described three-dimensional workbench connects cross slid platform by connecting axle, on described cross slid platform, is provided with rotation electrode; Described three-dimensional workbench comprises three mutually orthogonal X-axis, Y-axis and Z axis, and described X-axis and Y-axis are horizontal direction, and described Z axis is perpendicular to the horizontal plane of described X-axis and Y-axis composition; Described cross slid platform is arranged between described conventional rotary table and described three-dimensional workbench, and described cross slid platform comprises two mutually orthogonal U axles and V axle, and described U axle is parallel with described X-axis, and described V axle is parallel with described Y-axis; Described connecting axle is vertical connects described X-axis and V axle, and parallel with described Z axis; The vertical bottom that is arranged on described U axle of described rotation electrode.
The method of operating of above-mentioned a kind of electric spark machining device for superhard cutting tools, it comprises the following steps: 1) the conventional rotary table by lathe self clamps processed cutter, controls the angle of processed cutter along three directions, to regulate the position of processed cutter; 2) regulate the position of connecting axle by X-axis, Y-axis and the Z axis of three-dimensional workbench, and utilize the U axle of cross slid platform and V axle to control rotation electrode and do curvilinear motion take in the horizontal two-dimension polar coordinate system that connecting axle is initial point, Z axis coordinates the one-movement-freedom-degree that makes rotation electrode increase a vertical direction, realize that rotation electrode take connecting axle and carry out the polar coordinates motion as the centre of gyration in horizontal plane, and the position of the centre of gyration is adjustable in three dimensions; 3) adopt rotation electrode to carry out generating processing to processed cutter.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention is because three orthogonal direction reference axis of center cutter axle are controlled mobile by corresponding servomotor, and cutter is independently controlled by two electric rotating machines around the motion of central shaft, so can reduce the complexity that realizes that the processing of cutter generate realizes, improve process velocity.2, the present invention regulates the position of connecting axle by X-axis, Y-axis and the Z axis of three-dimensional workbench, and utilize U axle in cross slid platform and V axle to control rotation electrode and do curvilinear motion take in the horizontal two-dimension polar coordinate system that connecting axle is initial point, Z axis can coordinate the one-movement-freedom-degree that makes rotation electrode increase a vertical direction; Like this, can realize that rotation electrode take connecting axle and carry out the polar coordinates motion as the centre of gyration in horizontal plane, and the position of the centre of gyration is adjustable in three dimensions.3, the present invention can directly be programmed to the actuation movement corresponding to U axle, V axle, X-axis, Y-axis and five mechanical axis of Z axis, having removed a large amount of Coordinate Conversion from calculates, directly realized the generate processing of cutter, made the generate machining prgraming of cutter can simple realization.The present invention can be for moulding and the cutting edge process of various inserted tools.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of hard abnormity molding cutter in prior art
Fig. 2 is method of forming spark machined principle schematic in prior art
Fig. 3 is the structural representation of apparatus of the present invention
Fig. 4 is generating spark machined principle schematic of the present invention
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
The inventive method may be summarized to be following content:
1, adopt accurate digital control Electric Discharge Machining lathe to be processed processed cutter, processed Cutting tool installation manner is on the three axes telecontrol equipment of lathe self;
2, the motion of processed cutter is divided into to two parts: a part is processed cutter along the moving of three orthogonal directions, and it is to utilize the three-dimensional servo-drive system of lathe self to be controlled; Another part is the motion around processed center cutter axle, and it is to utilize two motors to carry out independent control;
3, adopt discoid shaped electrode, utilize generating to carry out cutting edge processing to processed cutter.
As shown in Figure 3, in prior art, be provided with conventional rotary table 2, electric rotating machine and servo-drive system on the lathe bed 1 of accurate digital control Electric Discharge Machining lathe.By conventional rotary table 2, can make processed cutter move along three direction rotations, regulate the position of processed cutter; Controlling processed cutter by electric rotating machine rotates around processed center cutter axle.Apparatus of the present invention also are provided with three-dimensional workbench 3 on existing accurate digital control Electric Discharge Machining bed piece 1, and three-dimensional workbench 3 connects cross slid platform 5 by connecting axle 4, is provided with rotation electrode 6 on cross slid platform 5.
Conventional rotary table 2 comprises A axle 21, and B axle 22 and C axle 23, for clamping processed cutter, can rotate along three directions processed cutter, to regulate the angle of processed cutter, centered by A axle 21, B axle 22 and C axle 23, rotates.
Three-dimensional workbench 3 comprises X-axis 31, Y-axis 32 and Z axis 33, X-axis 31, Y-axis 32 and Z axis 33 are mutually orthogonal, wherein, X-axis 31 and Y-axis 32 are horizontal direction, Z axis is perpendicular to the horizontal plane of X-axis 31 and Y-axis 32 compositions, X-axis 31, Y-axis 32 and Z axis 33 move along three orthogonal directions for control connection axle 4, to regulate the position of connecting axle 4.Three-dimensional workbench 3 can adopt common three-dimensional lathe.
The X-axis 31 of three-dimensional workbench 3, Y-axis 32 and Z axis 33 can control connection axle 4 position, the U axle 51 in cross slid platform 5 and V axle 52 move along two orthogonal directions in horizontal plane for controlling rotation electrode 6; Take to realize rotation electrode 6 gyration that connecting axle 4 is the centre of gyration.
The concrete operation method of apparatus of the present invention:
1) the conventional rotary table 2 by lathe self clamps processed cutter, and controls the angle of processed cutter along three directions by A axle 21, B axle 22, C axle 23, regulates the position of processed cutter;
2) after regulating the position clamping of processed cutter, X-axis 31, Y-axis 32 and Z axis 33 by three-dimensional workbench 3 coordinate the position of regulating connecting axle 4, and utilize U axle 51 in cross slid platform 5 and V axle 52 to control rotation electrodes 6 and do curvilinear motion take in the horizontal two-dimension polar coordinate system that connecting axle 4 is initial point, Z axis 33 can coordinate the one-movement-freedom-degree that makes rotation electrode 6 increase a vertical direction; Like this, can realize that rotation electrode 6 take connecting axle 4 and carry out the polar coordinates motion as the centre of gyration in horizontal plane, and the position of the centre of gyration is adjustable in three dimensions.
3) adopt 6 pairs of processed cutters of rotation electrode to carry out generating processing.
Adopt above-mentioned processing method to reduce and realize the complexity that the cutter generating is processed improving process velocity.
The present invention can directly be programmed to the actuation movement corresponding to U axle 51, V axle 52, X-axis 31, Y- axis 32 and 33 5 mechanical axis of Z axis, having removed a large amount of Coordinate Conversion from calculates, make the generate machining prgraming of cutter can simple realization, directly realized the generate processing of cutting edge roundness, made processed cutter there is consistent and best relief angle.
As shown in Figure 4, in above-described embodiment, rotation electrode 6 adopts discoid rotation electrode, utilizes generating to be processed hard abnormity molding cutter 7, guarantees that the relief angle of whole cutting edge reaches consistent and best.
The various embodiments described above are only for illustrating the present invention; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (2)
1. an electric spark machining device for superhard cutting tools, it comprises accurate digital control Electric Discharge Machining lathe, it is characterized in that: be provided with conventional rotary table, electric rotating machine and servo-drive system on the lathe bed of described lathe, also be provided with the three-dimensional workbench on the lathe bed of described lathe, described three-dimensional workbench connects cross slid platform by connecting axle, on described cross slid platform, is provided with rotation electrode;
Described three-dimensional workbench comprises three mutually orthogonal X-axis, Y-axis and Z axis, described X-axis and Y-axis are horizontal direction, described Z axis is perpendicular to the horizontal plane of described X-axis and Y-axis composition, and described X-axis, Y-axis and Z axis move along three orthogonal directions for controlling described connecting axle;
Described cross slid platform is arranged between described conventional rotary table and described three-dimensional workbench, described cross slid platform comprises two mutually orthogonal U axles and V axle, described U axle is parallel with described X-axis, described V axle is parallel with described Y-axis, and described U axle and V axle move along two orthogonal directions in horizontal plane for controlling described rotation electrode;
Described connecting axle is vertical connects described X-axis and V axle, and parallel with described Z axis;
The vertical bottom that is arranged on described U axle of described rotation electrode.
2. the method for operating of an electric spark machining device for superhard cutting tools as claimed in claim 1, it comprises the following steps:
1) the conventional rotary table by lathe self clamps processed cutter, controls the angle of processed cutter along three directions, to regulate the position of processed cutter;
2) regulate the position of connecting axle by X-axis, Y-axis and the Z axis of three-dimensional workbench, and utilize the U axle of cross slid platform and V axle to control rotation electrode and do curvilinear motion take in the horizontal two-dimension polar coordinate system that connecting axle is initial point, Z axis coordinates the one-movement-freedom-degree that makes rotation electrode increase a vertical direction, realize that rotation electrode take connecting axle and carry out the polar coordinates motion as the centre of gyration in horizontal plane, and the position of the centre of gyration is adjustable in three dimensions;
3) adopt rotation electrode to carry out generating processing to processed cutter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100042255A CN102554379B (en) | 2012-01-09 | 2012-01-09 | Electric spark machining device for superhard cutting tools and operation method |
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| CN2012100042255A CN102554379B (en) | 2012-01-09 | 2012-01-09 | Electric spark machining device for superhard cutting tools and operation method |
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| CN102554379B true CN102554379B (en) | 2013-12-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107042344A (en) * | 2017-06-02 | 2017-08-15 | 苏州群伦精密机电工业有限公司 | Micro numerical electric discharge device and its XY shaft drives |
| CN107116273A (en) * | 2017-06-15 | 2017-09-01 | 群基精密工业(苏州)有限公司 | Micro numerical electric discharge device |
| CN110449675A (en) * | 2019-07-09 | 2019-11-15 | 江苏省艾格森数控设备制造有限公司 | A kind of rotary boart boart stick electric spark correction of the flank shape lathe of horizontal axis |
| CN113695692A (en) * | 2021-09-10 | 2021-11-26 | 瑞声精密制造科技(常州)有限公司 | Cutter machining method and device |
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| CN2413832Y (en) * | 2000-03-20 | 2001-01-10 | 苏州中特机电科技有限公司 | Digital driving mechanism for high speed electric spark small hole working equipment |
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| CN101795806A (en) * | 2007-07-17 | 2010-08-04 | 通用电气公司 | Apparatus and method for hybrid machining a contoured, thin-walled workpiece |
| CN102019474A (en) * | 2010-09-16 | 2011-04-20 | 南京航空航天大学 | Online preparing system and method for electrochemical grinding micro tool for line electrode |
| CN102152155A (en) * | 2011-04-18 | 2011-08-17 | 苏州电加工机床研究所有限公司 | Machine tool track swinging mechanism for processing ring-shaped patterns by using electric spark |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08108319A (en) * | 1994-10-07 | 1996-04-30 | Mitsubishi Heavy Ind Ltd | Sampling device for small tube |
| KR100407888B1 (en) * | 2001-05-15 | 2003-12-03 | 한국과학기술원 | Electrochemical Discahrge Machining Device |
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- 2012-01-09 CN CN2012100042255A patent/CN102554379B/en active Active
Patent Citations (6)
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|---|---|---|---|---|
| CN2413832Y (en) * | 2000-03-20 | 2001-01-10 | 苏州中特机电科技有限公司 | Digital driving mechanism for high speed electric spark small hole working equipment |
| JP4218322B2 (en) * | 2002-11-20 | 2009-02-04 | パナソニック株式会社 | Manufacturing method of grinding tool |
| CN2757993Y (en) * | 2004-11-10 | 2006-02-15 | 北京安德数字设备有限公司 | Feeding mechanism of electric spark processing machine tool |
| CN101795806A (en) * | 2007-07-17 | 2010-08-04 | 通用电气公司 | Apparatus and method for hybrid machining a contoured, thin-walled workpiece |
| CN102019474A (en) * | 2010-09-16 | 2011-04-20 | 南京航空航天大学 | Online preparing system and method for electrochemical grinding micro tool for line electrode |
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Effective date of registration: 20190418 Address after: 321015 Office 218, Tianshan Road, Jinyi Metropolitan Economic Development Zone, Jindong District, Jinhua City, Zhejiang Province Patentee after: Zhejiang Saili Precision Technology Co., Ltd. Address before: 100084 Department of Precision Instruments and Mechanics, Tsinghua University, Haidian District, Beijing Co-patentee before: Foshan Shunde Sairui Tool Co., Ltd. Patentee before: Tsinghua University Co-patentee before: Foshan Shunde Sarui Numerical Control Electric Discharge Machines Research Center |