WO1988000367A1 - Procede d'etablissement du chemin de coupe d'un plan courbe composite - Google Patents
Procede d'etablissement du chemin de coupe d'un plan courbe composite Download PDFInfo
- Publication number
- WO1988000367A1 WO1988000367A1 PCT/JP1987/000477 JP8700477W WO8800367A1 WO 1988000367 A1 WO1988000367 A1 WO 1988000367A1 JP 8700477 W JP8700477 W JP 8700477W WO 8800367 A1 WO8800367 A1 WO 8800367A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- curve
- curved surface
- cutting path
- composite
- cross
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/41—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by interpolation, e.g. the computation of intermediate points between programmed end points to define the path to be followed and the rate of travel along that path
Definitions
- the present invention relates to a method for generating a cutting path of a compound curved surface, and more particularly to a method for generating a cutting path capable of cutting a compound curved surface along an arbitrary path.
- a curved surface on a design drawing of a three-dimensional mold or the like is generally represented by a plurality of cross-sectional curves, and there is no shape data between one cross-sectional curve and the next.
- a smooth connection is made between the two cross-sectional curves, even though an intermediate shape is not provided in this way. It is required to do so.
- the surfaces of the above two cross-sectional curves are generated from the data of the cross-sectional curves and the like, and the data relating to the generated surfaces are generated. This means that the data must be recorded on the NC tape and processed according to instructions from the NC tape.
- a plurality of intermediate sections are generated according to a predetermined rule from data specifying some cross sections and cross section curves of a three-dimensional curved body, and at the same time, a plurality of intermediate cross sections are generated for the cross section.
- the tool is cut (the I-path passes along the cross-sectional curve in the order of the cross-sectional curve determined above). It becomes a moving passage.
- the conventional cutting path repeats one-way cutting or reciprocating cutting along the determined cross-sectional curve to machine a curved surface.
- the cutting path is determined as follows.
- the conventional method cannot move a tool along an arbitrary cutting path to perform a curved surface processing.
- it has not been possible to cut a tool by sequentially moving the tool along many closed paths similar to the contour of a compound curved surface.
- an object of the present invention is to provide a cutting path generation method capable of performing edging of a complex curved surface and processing along an arbitrary cutting path.
- the present invention relates to a method for generating a cutting path of a composite curved surface obtained by combining at least two three-dimensional curved surfaces.
- this cutting path generation method data for specifying each of the three-dimensional curved surfaces is input, and at the same time, an XY plane including two or more elements when a line segment and an arc are used as elements.
- Step for specifying the above one curve, and among the many elements constituting the curve, the element of the i-th subject (i l, 2, ⁇
- a step that generates a path to be cut as a cutting path. have .
- FIG. 1 is an explanatory diagram of a cutting path generation method according to the present invention
- FIG. 2 is a block diagram of an automatic programming device embodying the present invention
- FIG. 3 is a flowchart of the process of the present invention.
- FIG. 5 and FIG. 6 are explanatory diagrams of the conventional method.
- FIG. 1 is an explanatory diagram of a cutting path generation method according to the present invention.
- 11 is a composite surface
- 12a, 12 and 12c are three-dimensional surfaces that form a composite surface
- CV is a curve in the XY plane
- CV1 to CV4 are curves CV.
- the elements (line segments or arcs), SS1 to SS4 are the cross sections for cutting the composite curved surface, and SC1 to SC4 are the cross-sectional curves.
- Figure 2 shows an automatic pi-glanging device for realizing the method of the present invention.
- Figure 3 is a block diagram of the system, and Figure 3 is a flowchart of the process.
- 101 is a keyboard for data input
- 102 is a processor
- 103 is a ROM for storing a control program
- 104 is a ROM for storing a control program.
- 105 is surface memory memory for storing generated complex surface data and NC program data for surface processing
- 106 is surface data Disk controller that outputs FF and NC data to the floppy disk
- 107 is a graphic display device (CRT)
- 108 Is an XY plotter that projects a curved surface.
- NC data for moving the tool along the point sequence is created.
- the tool moves along the contour of the compound curved surface 11 according to the NC data, and the cutting is performed.
- the above is the case where the tool is moved along the contour of the compound curved surface, but the projection on the XY plane is shown in Fig. 4.
- the number of divisions N along with the data specifying the outermost closed curve CCV1 in step (b) is used.
- one curve on a predetermined plane composed of two or more elements is specified, and each element constituting the curve is formed into a cross section that is an intersection line with the predetermined plane.
- the cross-sectional curve obtained by cutting the complex curved surface is obtained, and the path for moving the tool along the cross-sectional curve corresponding to the element in the element order is set as the cutting path.
- edging of a complex curved surface and machining along an arbitrary cutting path can be performed.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61/161518 | 1986-07-09 | ||
JP61161518A JPS6318405A (ja) | 1986-07-09 | 1986-07-09 | 複合曲面の切削通路生成方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1988000367A1 true WO1988000367A1 (fr) | 1988-01-14 |
Family
ID=15736596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1987/000477 WO1988000367A1 (fr) | 1986-07-09 | 1987-07-07 | Procede d'etablissement du chemin de coupe d'un plan courbe composite |
Country Status (4)
Country | Link |
---|---|
US (1) | US4893251A (ja) |
EP (1) | EP0276318A4 (ja) |
JP (1) | JPS6318405A (ja) |
WO (1) | WO1988000367A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017157917A1 (en) * | 2016-03-14 | 2017-09-21 | Danmarks Tekniske Universitet | Robotic system and method for manufacturing of objects |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1339155C (en) | 1987-07-28 | 1997-07-29 | David M. Dundorf | Computer produced carved signs and method and apparatus for making same |
US5197013A (en) * | 1987-07-28 | 1993-03-23 | David M. Dundorf | Method of forming a carved sign using an axially rotating carving tool |
EP0523270A1 (de) * | 1991-07-18 | 1993-01-20 | International Business Machines Corporation | Verfahren zur Steuerung einer Positioniereinrichtung |
EP0578841A1 (de) * | 1992-07-11 | 1994-01-19 | International Business Machines Corporation | Verfahren zur Erzeugung von Höhenlinien mit einem Computersystem |
US5416716A (en) * | 1993-03-30 | 1995-05-16 | Gerber Garment Technology, Inc. | Contour builder |
WO1997036216A1 (fr) * | 1996-03-26 | 1997-10-02 | Toyota Jidosha Kabushiki Kaisha | Technique et appareil de preparation de donnees sur l'itineraire mobile d'un outil, technique et systeme d'usinage |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS575109A (en) * | 1980-06-10 | 1982-01-11 | Fanuc Ltd | Curved surface forming method |
JPS61199110A (ja) * | 1985-02-28 | 1986-09-03 | Fanuc Ltd | 複合曲面生成方法 |
JPH06111809A (ja) * | 1992-09-29 | 1994-04-22 | Matsushita Electric Ind Co Ltd | 鉛蓄電池用ペースト充填装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3882304A (en) * | 1973-05-04 | 1975-05-06 | Allen Bradley Co | Parametric interpolation of three-dimensional surfaces |
JPS57113113A (en) * | 1980-12-30 | 1982-07-14 | Fanuc Ltd | Generating method for curved surface |
JPS57166607A (en) * | 1981-04-04 | 1982-10-14 | Fanuc Ltd | Curved surface generating method |
JPS57169814A (en) * | 1981-04-10 | 1982-10-19 | Fanuc Ltd | Forming method of curved surface |
JPS6015711A (ja) * | 1983-07-07 | 1985-01-26 | Fanuc Ltd | 曲面生成方法 |
JPH0664486B2 (ja) * | 1983-07-07 | 1994-08-22 | ファナック株式会社 | 3次元曲線作成方法 |
JPH061404B2 (ja) * | 1985-09-13 | 1994-01-05 | フアナツク株式会社 | 複合曲面加工方法 |
JPS6265105A (ja) * | 1985-09-17 | 1987-03-24 | Fanuc Ltd | 複合曲面生成方法 |
-
1986
- 1986-07-09 JP JP61161518A patent/JPS6318405A/ja active Pending
-
1987
- 1987-07-07 WO PCT/JP1987/000477 patent/WO1988000367A1/ja not_active Application Discontinuation
- 1987-07-07 EP EP19870904326 patent/EP0276318A4/en not_active Ceased
- 1987-07-07 US US07/171,870 patent/US4893251A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS575109A (en) * | 1980-06-10 | 1982-01-11 | Fanuc Ltd | Curved surface forming method |
JPS61199110A (ja) * | 1985-02-28 | 1986-09-03 | Fanuc Ltd | 複合曲面生成方法 |
JPH06111809A (ja) * | 1992-09-29 | 1994-04-22 | Matsushita Electric Ind Co Ltd | 鉛蓄電池用ペースト充填装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0276318A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017157917A1 (en) * | 2016-03-14 | 2017-09-21 | Danmarks Tekniske Universitet | Robotic system and method for manufacturing of objects |
US10857678B2 (en) | 2016-03-14 | 2020-12-08 | Danmarks Tekniske Universitet | Robotic system and method for manufacturing of objects |
Also Published As
Publication number | Publication date |
---|---|
EP0276318A1 (en) | 1988-08-03 |
JPS6318405A (ja) | 1988-01-26 |
EP0276318A4 (en) | 1990-03-08 |
US4893251A (en) | 1990-01-09 |
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