WO1985000310A1 - Tapering method for wire-cut electric discharge machining - Google Patents
Tapering method for wire-cut electric discharge machining Download PDFInfo
- Publication number
- WO1985000310A1 WO1985000310A1 PCT/JP1984/000346 JP8400346W WO8500310A1 WO 1985000310 A1 WO1985000310 A1 WO 1985000310A1 JP 8400346 W JP8400346 W JP 8400346W WO 8500310 A1 WO8500310 A1 WO 8500310A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- work
- taper
- radius
- arc
- machining
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
- B23H7/06—Control of the travel curve of the relative movement between electrode and workpiece
- B23H7/065—Electric circuits specially adapted therefor
Definitions
- a wire-cut electric discharge machine has a wire stretched between an upper guide and a lower guide, and a wire between the wire and the workpiece is provided.
- the workpiece is processed by causing an electric discharge in the workpiece.
- the workpiece is fixed to table 1: and the X is controlled by a command from the numerical controller along the machining shape. , And move in the Y direction.
- the machining shape of the upper and lower surfaces of the work will be the same, and the upper guide
- the guide is configured so that it can be displaced in the X and Y directions (U ⁇ and V ⁇ ).
- the upper guide is displaced in the direction perpendicular to the work moving direction and the wire is displaced. If the wire is inclined with respect to the workpiece, the machining shape of the upper surface and the lower surface of the work will not be the same, and the wire machining surface will be skewed. Processing is performed.
- Fig. 1 is an illustration of such taper processing, in which a wire WR is inclined between the upper guide UG and the lower guide DG at a predetermined angle with respect to the work. It is set up.
- the lower surface PL of the work WK be a program shape (the upper surface QU of the work WK may be a program shape)
- the taper angle a Given the distance H between the guide, UG and the lower guide DGs, and the distance h from the lower guide DG to the lower surface of the work WK, the lower guide DG with respect to the lower surface PL of the work
- the offset amount d 1 and the offset amount d 2 of the upper guide ⁇ 'G are respectively
- the wire guide WR is controlled so that the wire WR is extended so that the offset amounts di and d 2 are constant in accordance with the movement of the 7-axis. Then, as shown in Fig. 2, taper processing of taper angle a can be performed.
- the dotted line and the dashed line are the paths for the upper guide G ⁇ , the lower guide, and DG, respectively.
- An object of the present invention is to provide a taper processing method in which first and second arcs each having an arbitrary radius can be inserted into an upper surface and a lower surface of a work of a corner portion. And.
- first and second arcs are smoothly connected to the upper and lower wire passages of the first tapered surface, respectively.
- a taper processing method capable of obtaining a corner shape in which the upper and lower work paths of the second tapered surface are smoothly connected from the end point of the second arc. It is to provide
- Yet another object of the present invention is to provide a taper machining method capable of expanding the application of a wire-cut electric discharge machine.
- the present invention is to smoothly connect circular arcs to the wire passages on the upper surface and the lower surface of the first tapered surface, respectively.
- the taper processing method in the case of a taper shape in which the upper and lower surfaces of the work on the second taper surface smoothly connect from the end points of the arcs on the upper and lower surfaces. Then, the arc radii r and s of the work surface and the lower surface are input together with the path data, and the arc having the radius r is formed on the upper surface of the work.
- the coordinates of the points of contact Q, R and the center 0, which are in contact with the passage on the taper surface, are calculated, and an arc having a radius s is formed on the lower surface of the work.
- Contact points Q 'and R' that contact the passage on the taper surface of No. 2 and the center Calculate the coordinates of O 'and use the coordinates of the contacts Q and RR' to guide the lower guide from the point Q or Q 'on the program path on the first taper surface. ⁇
- the end guides to the upper guide, the solenoid contact, and the lower guide and upper guide from the point H or R 'on the program passage of the second tapered surface. Perform the offset vector starting point up to the id, use these offset vectors, first perform the first taper surface machining, and then
- the 7-key is moved along the arc of radius r and radius s on the top and bottom surfaces of the workpiece to perform conical mating corner processing, and then the second taper surface
- a tape processing method characterized by performing processing is provided.
- an arc having an arbitrary radius can be inserted into each of the upper surface and the lower surface of the work in the corner portion, and In addition, the arc can be inserted into the scallop contacting the first and second taper surfaces, thereby improving the function of the diacut.
- FIG. 1 is an explanatory view of a taper process
- FIG. 2 is an explanatory view of an upper guide passage and a lower guide passage by relative movement
- FIGS. 3 to 6 relate to the present invention.
- Fig. 7 is an illustration of the tape machining method of the present invention, in which the machining rails on the upper and lower surfaces of the work are arcs of commanded radii r, s
- Fig. 8 is ⁇ Fig. 9 is a schematic diagram of the electric machine
- Fig. 9 is a block diagram of the main part of the control device.
- FIGS. 3 (A) to 3 (C) are explanatory views for explaining the taper processing method relating to the roasted rice cake, and the upper and lower surfaces of the work of the first tapered surface TPI.
- the first and second arcs CR i and CR 2 are smoothly connected to the ear passages QU i and PL 1, respectively, and the end points R and R ′ of the first and second arcs are connected to each other.
- the wire passages QU2 and PL2 on the upper and lower surfaces of the second taper surface TPs are smoothly connected to each other.
- Fig. 3 (A) shows an example in which the radius r of the arc CRi on the top surface of the page is larger than the radius CR2 of the arc CRs on the flat T surface.
- Fig. 3 (B), CC) are both examples of r ⁇ s.
- FIG. 4 is an explanatory diagram for explaining the taper machining method according to the present invention in further detail.
- a thick solid line indicates a program shape on the upper surface of the work
- a dotted line indicates an upper gap.
- the UG path and the chain line are the path of the lower guide DG.In the corner section, the general tapered surface TP t and TP 2 intersect at an angle at the corner.
- the vertical distance between the upper guide UG and the lower guide DG, the vertical distance h from the upper surface of the work to the lower guide, and the first and second tapers angle a in addition to a 2, word over click first tapered surface TP i that put on the top and the second tape tapered surface TP 2 profile grams passage data is given.
- the incremental values of the passages on the first tapered surface TP1 and the second tapered surface TP2 are respectively (xi, y1), (xi X
- G 0 1 means linear interpolation;; means ⁇ -pound
- each of the files R, S, and Z is an address for instructing the radius s of the lower half of the work on the upper surface of the work and the thickness z of the work piece.
- the taper angles a of the first tapered surface TPI and the second tapered surface TP2 are equal and have been given in the front block.
- O The coordinates of O are obtained as the coordinates of the intersection of a straight line parallel to line segment AB and separated by r and a straight line parallel to line segment BC and similarly separated by r.
- Segment A ', 8' coordinates of the 8 'Motomema been if these second damn arc CR 2 is inscribed in the contact Q of both segments in the radial s', R 'us good beauty center 0' Obtain the same as for the top of the work.
- C is the thickness of the work
- H is the vertical distance between the upper guide and the lower guide
- h is the distance from the top of the workpiece to the lower guide. The vertical distance to the head.
- the upper surface of the workpiece has an arc shape
- the wire electrode has the same shape as the QE
- the lower surface of the workpiece has an arc shape Q '' '.
- Fig. 5 illustrates the upper and lower guide paths when the program consists of a combination of a straight line and a circular arc (the taper angle is fixed).
- Illustration, Fig. 6 shows the work travel vector VT i and the upper guide travel ⁇ vector VG i
- FIG. 4 is an explanatory diagram for explaining a calculation method of 10.
- A, B, C, and D are points of the machining shape on the upper surface of the work (or the lower surface of the work).
- V T i A B + N L-P L
- V G i (P U-P L) one C N U-N L)
- L 1; NU 2 and NL 2 are as shown in the following table. Therefore, from the equations (10) and (11), VT i and VG i in the first and second tenos tfi are obtained, and the work movement vector VT i is obtained.
- the table drive motors MX and MY are driven by the X ⁇ and Y ⁇ components ( ⁇ , AY i), respectively, and the upper guide transfer amount vector VG i is: X axis, Y ⁇ component ( ⁇ U i
- TP2 can be subjected to electrical discharge machining.
- FIG. 7 shows the machining path on the top surface of the circle where the machining track is a circle 3 ⁇ 4 ⁇ QR (Fig. 4) and the machining track on the bottom surface of the circle is a circle 3 ⁇ 4K Q 'R'.
- FIG. 4 is an explanatory diagram for explaining relative movement control of a guide and a work. In such a truncated cone-shaped corner, Taira divided the arcs QR and Q'R 'into m equal parts, approximated the arcs, and explained them according to Fig. 6. Movement control of the rework WK and the upper guide UG.
- each of the arcs ⁇ and 'Q' R is divided into m equal parts Qi1, Q21, Q31, ... and division points Q'11, Q'21, Q'31 ... Can be easily calculated because the points Q., R, 0, Q ', R', 0 'and the arc radii ⁇ , S are known. Then, these pairs
- the table drive motors MX and MY are determined by the axis component of the vector V ti, C ⁇ X i, ⁇ i), and the ft component of the vector vgi ( ⁇ ⁇ gi , ⁇ V i) tortoise the upper guide drive motor MU, ⁇ V.
- V t 1 Q ⁇ Q + n i i-p l
- FIG. 8 shows a four-wire control method to which the present invention can be applied.
- Fig. 1 is a schematic diagram of an electric discharge machine. Moved in X and Y directions by X and MY, respectively: Fixed on X-Y table TB.
- the wire WR is wound around the reel RL2 while being fed from the reel RLt, and is applied with a voltage by an unillustrated electrodeposition plant. It is configured such that a discharge occurs between it and WK.
- the upper guide UG is provided on the column CM so as to be movable in the X and ⁇ directions by the motors M ⁇ and MV, respectively, so that each of the motors MX, MY and MU , MV is driven by the driving circuit 0 of the numerical controller N: ⁇ :, 0?, 0 7 1;, 0 ⁇ .
- the distribution circuit DS performs the individual distribution processing.
- FIG. 9 is a ⁇ ⁇ ⁇ curve diagram of a main part of a numerical control device for realizing the taper processing method according to the present invention.
- TR is a tape reader
- DEC is a decoder.
- REG, R1 to RS are registers
- AR1 to ARs are arithmetic circuits
- PAR is a parameter setting circuit
- INT is an interpolator
- MU MV
- MX MY
- the arithmetic circuit ARi is used for tape machining along a straight line as shown in FIG. 6, and the tape is formed into an arc as shown in FIG.
- the processing using AR2 and AR5 is shown for the purpose of super processing, but this is for convenience of explanation, and each arithmetic circuit should be shared.
- the registers R i to R s can also be composed of one memory.
- the end point offset vector of the block is stored as the end point offset vector PU, PL of the first taper surface TP ⁇ . It shall be assumed.
- the arithmetic circuit ARi obtains the coordinates of the points Q, ⁇ 3 ⁇ 4 ′, R, R ′, ⁇ , ⁇ ′ according to the above-described sequence, and obtains the coordinates according to equation (6). Then, the end point offset vector NL up to the upper guide is calculated by the equation (7), and the end point offset vector NU up to the upper guide is calculated by the equation (7). NU to the NL register R s
- the execution circuit ARI is obtained from the vectors VTi and VGi set in the register Ri from the ⁇ and ⁇ components ⁇ ⁇ .
- WIFO 6 Output to one circuit REI, input to the inter-controller INT, and control the driving of motors MX, MY, MU, MV based on the pulse obtained by linear interpolation. Execute a taper along the straight line ⁇ "3 ⁇ 4 ⁇
- the arithmetic circuit AR 2 calculates the end point at the end point c of the truncated cone shape by the formulas (8) and (9), ie, at the end point of the c-three-three-three nn ⁇ C 2nd taper ⁇ ⁇ 2 start point ⁇ . Obtain the offset vectors NL and NU and write them in the offset register Rs.
- the arcs R and Q'R ' are each divided into m equal parts, and each division Q11, Q.2 L', Q ⁇ 1 ... of the arc QR and each division point of the arcs Q 'and R' Q 1 i '. Q 2 1', Q s
- the arithmetic circuit AR s to Les g is te R 5 cell Tsu Bok of Retabe click bet Ti, ⁇ , y, y, y, u, and vi are set in the register R s.
- the torque is obtained, and the taper processing of the second taper surface TP2 is performed in the same manner as the first taper surface TPi. finish . '
- the upper surface of the work is a program surface, but if the lower surface of the work is a program surface, the work surface is at an arbitrary height. The same applies to the case where the filter is a program surface.
- the present invention can be applied to a wire-cut electric discharge machine as shown in the above-described embodiment, and can also be applied to a mouth bot controlled by a numerical controller.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8484902725T DE3479570D1 (en) | 1983-07-07 | 1984-07-06 | Tapering method for wire-cut electric discharge machining |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58/123601 | 1983-07-07 | ||
JP58123601A JPS6029232A (ja) | 1983-07-07 | 1983-07-07 | テ−パ加工方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1985000310A1 true WO1985000310A1 (en) | 1985-01-31 |
Family
ID=14864645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1984/000346 WO1985000310A1 (en) | 1983-07-07 | 1984-07-06 | Tapering method for wire-cut electric discharge machining |
Country Status (5)
Country | Link |
---|---|
US (1) | US4700314A (ja) |
EP (1) | EP0148958B1 (ja) |
JP (1) | JPS6029232A (ja) |
DE (1) | DE3479570D1 (ja) |
WO (1) | WO1985000310A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62264307A (ja) * | 1986-05-13 | 1987-11-17 | Fanuc Ltd | 法線ベクトル演算方法 |
JP2520609B2 (ja) * | 1986-09-06 | 1996-07-31 | ファナック 株式会社 | ワイヤ放電加工方法 |
JP2514191B2 (ja) * | 1986-10-15 | 1996-07-10 | フアナツク株式会社 | レ−ザ加工用のncパ−トプログラム作成方法 |
US4916990A (en) * | 1987-12-23 | 1990-04-17 | Siemens Aktiengesellschaft | Method for controlling the path of a punching tool |
DE3810662A1 (de) * | 1988-03-29 | 1989-10-19 | Agie Ag Ind Elektronik | Verfahren und vorrichtung zur numerischen bahnsteuerung fuer elektroerodiermaschinen |
JPH02116422A (ja) * | 1988-10-27 | 1990-05-01 | Mitsubishi Electric Corp | ワイヤカット放電加工方法 |
JPH02250724A (ja) * | 1989-03-23 | 1990-10-08 | Mitsubishi Electric Corp | ワイヤカット放電加工方法 |
JP2691613B2 (ja) * | 1989-05-08 | 1997-12-17 | 菱電工機エンジニアリング株式会社 | Cad/cam装置 |
JPH04189421A (ja) * | 1990-11-20 | 1992-07-07 | Mitsubishi Electric Corp | ワイヤ放電加工方法及びその装置 |
EP0495147A1 (de) * | 1991-01-18 | 1992-07-22 | Siemens Aktiengesellschaft | Verfahren zur Bahnkorrektur bei numerisch gesteuerten Maschinen |
JPH06324733A (ja) * | 1993-05-12 | 1994-11-25 | Fanuc Ltd | センサ付きロボットの制御方法及び装置 |
JP4472558B2 (ja) * | 2005-03-03 | 2010-06-02 | 株式会社ソディック | ワイヤカット放電加工方法 |
TW200821555A (en) * | 2006-11-10 | 2008-05-16 | Macroblock Inc | Illuminating apparatus and brightness switching device thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5577424A (en) * | 1978-12-01 | 1980-06-11 | Fanuc Ltd | Numerical control system |
JPS58114822A (ja) * | 1981-12-24 | 1983-07-08 | Fanuc Ltd | テ−パ加工方法 |
JPS5976728A (ja) * | 1982-10-26 | 1984-05-01 | Fanuc Ltd | テ−パ加工方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH476544A (de) * | 1967-11-14 | 1969-08-15 | Agie Ag Ind Elektronik | Elektroerosive Bearbeitungsmaschine mit einer elektronischen, durch digitale Eingabe gesteuerten Steuereinrichtung |
US3731044A (en) * | 1971-06-23 | 1973-05-01 | Agie Ag Ind Elektronik | Electro-eroding machine with a circuit for the control of at least one advancing device for a wire electrode and/or for a workpiece |
US3731045A (en) * | 1971-07-01 | 1973-05-01 | Agie Ag Ind Elektronik | Circuit for an electro-eroding machine for the control of the relative movement between at least one electrode and at least one workpiece |
US3946189A (en) * | 1971-11-09 | 1976-03-23 | Ing. C. Olivetti & C., S.P.A. | Electroerosion apparatus having a cyclically movable and variably inclined wire electrode |
US3849624A (en) * | 1973-05-29 | 1974-11-19 | Andrew Eng Co | Wire electrode electric erosion device |
JPS5841980B2 (ja) * | 1976-02-25 | 1983-09-16 | 富士通フアナツク株式会社 | 数値制御ワイヤカツト放電加工機 |
FR2371267A1 (fr) * | 1976-11-19 | 1978-06-16 | Charmilles Sa Ateliers | Procede et dispositif pour l'usinage par etincelage erosif |
JPS53132895A (en) * | 1977-04-25 | 1978-11-20 | Inoue Japax Res Inc | Method of tapering in wire-cutting discharge processings |
JPS54117997A (en) * | 1978-03-07 | 1979-09-13 | Mitsubishi Electric Corp | Wire-cut electrospark machining |
JPS55120930A (en) * | 1979-03-06 | 1980-09-17 | Mitsubishi Electric Corp | Wire cut-type electric discharge machining |
JPS55120934A (en) * | 1979-03-13 | 1980-09-17 | Mitsubishi Electric Corp | Wire cut-type electric current machining |
JPS5639822A (en) * | 1979-08-30 | 1981-04-15 | Inoue Japax Res Inc | Electric wire cutter |
JPS594252B2 (ja) * | 1979-09-08 | 1984-01-28 | フアナツク株式会社 | テ−パ加工方法 |
JPS5766823A (en) * | 1980-10-08 | 1982-04-23 | Fanuc Ltd | Wire cutting discharge processing system |
JPS59161236A (ja) * | 1983-03-03 | 1984-09-12 | Fanuc Ltd | ワイヤカツト放電加工機におけるコ−ナ加工方法 |
-
1983
- 1983-07-07 JP JP58123601A patent/JPS6029232A/ja active Pending
-
1984
- 1984-07-06 WO PCT/JP1984/000346 patent/WO1985000310A1/ja active IP Right Grant
- 1984-07-06 US US06/711,580 patent/US4700314A/en not_active Expired - Lifetime
- 1984-07-06 DE DE8484902725T patent/DE3479570D1/de not_active Expired
- 1984-07-06 EP EP84902725A patent/EP0148958B1/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5577424A (en) * | 1978-12-01 | 1980-06-11 | Fanuc Ltd | Numerical control system |
JPS58114822A (ja) * | 1981-12-24 | 1983-07-08 | Fanuc Ltd | テ−パ加工方法 |
JPS5976728A (ja) * | 1982-10-26 | 1984-05-01 | Fanuc Ltd | テ−パ加工方法 |
Also Published As
Publication number | Publication date |
---|---|
EP0148958B1 (en) | 1989-08-30 |
US4700314A (en) | 1987-10-13 |
JPS6029232A (ja) | 1985-02-14 |
EP0148958A4 (en) | 1987-04-28 |
DE3479570D1 (en) | 1989-10-05 |
EP0148958A1 (en) | 1985-07-24 |
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