WO1988010456A1 - Involute interpolation method - Google Patents
Involute interpolation method Download PDFInfo
- Publication number
- WO1988010456A1 WO1988010456A1 PCT/JP1988/000581 JP8800581W WO8810456A1 WO 1988010456 A1 WO1988010456 A1 WO 1988010456A1 JP 8800581 W JP8800581 W JP 8800581W WO 8810456 A1 WO8810456 A1 WO 8810456A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- curve
- point
- base circle
- command
- angle
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003754 machining Methods 0.000 claims abstract description 5
- 238000001926 trapping method Methods 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000013459 approach Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34144—Involute, evolute
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/10—Gear cutting
- Y10T409/101113—Gear chamfering or deburring
- Y10T409/101272—Using relatively reciprocating or oscillating cutter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/303752—Process
Definitions
- the present invention relates to a method for interlocking a symbol for machining in a numerical controller or the like, and more particularly, to an interlock which is configured to easily interlock a symbol curve in a numerical controller. It relates to the trap system. Background technology
- Interpolation of symbolic curve by curve interpolation of numerical controller etc. is highly necessary for machining gears, pump blades, etc.
- the integral curve is interpolated with a numerical controller and another computer or NC program creating device, decomposed into linear data, and numerical control processing is performed using this tape. It was common to do so.
- An object of the present invention is to solve the above-mentioned problems and to simplify the numerical controller.
- An object of the present invention is to provide an interpolating method simply configured to interpolate an involute curve.
- the direction of the surface rotation of the symbol curve, the amount of movement or the angle of movement, the center position of the base circle, and the radius (R) of the base circle are commanded.
- the symbolic interpolation method that interpolates the symbolic curve at fixed distances or fixed angles is used.
- the equation of the curve is determined from the given command, and pulse capture is performed at a constant moving distance or at a constant angle using this equation.
- This process is executed by the numerical controller, and pulse distribution is continued.
- Fig. 1 (a) shows the case where the involute curve deviates counterclockwise from the base circle.
- Fig. 1 (b) shows the case where the polygon curve is counterclockwise and approaches the base circle.
- Fig. 1 (c) shows the impulse curve approaching the base circle clockwise.
- FIG. 1 (d) is a diagram showing the case where the involute curve deviates from the base circle with a right drawing.
- FIG. 2 is a schematic diagram of a numerical control device according to one embodiment of the present invention.
- Figures 1 (a) to (d) show examples of involute curves.
- Fig. 1 (a) shows the case where the involute curve deviates counterclockwise from the base circle, and the command is GO 3.1. '
- Fig. 1 (b) shows the case where the involute curve approaches the base circle counterclockwise (counterclockwise), and the command is GO 3.1.
- Fig. 1 (c) shows the case where the involute curve approaches clockwise (time planning) and approaches the base circle, and the command is GO 2.1.
- Fig. 1 (d) shows the case where the involute curve deviates clockwise (clockwise) from the base circle, and the command is GO 2.1.
- C is the base circle of the involute curve
- the center coordinate is 0 ( ⁇ , Y.)
- the radius is R.
- Point ⁇ Is the curve start point of the symbolic curve, the point ⁇ .
- ⁇ 1 be the angle between the line connecting X and the X axis.
- the point P s (X s, Y s) is the start point of the interpolation. From this point, a tangent £ s is drawn to the base circle C, and the contact point is ⁇ 1 (X 1, ⁇ 1). The angle formed by the line connecting point ⁇ 1 and the center 0 of the circle with the X axis is ⁇ 2.
- the point P e (X e, Y e) is the end point of the interpolation.
- a tangent £ e is drawn to the base circle C, and the contact point is set to P 2 (X 2, ⁇ 2).
- the angle between the line connecting point ⁇ 2 and the center 0 of the circle with X tt is ⁇ 3.
- G 1 7 G 0 3.
- G 17 is a command to specify a plane
- G 17 is an XY plane
- 0 18 is a 2-plane
- G 19 is a YZ plane.
- G03.1 is a command for the left (counterclockwise) interlock catch, and for the right (clockwise) interlock catch (Figs. 1 (c) and (d)). ) Is commanded by G 0 2. Whether to approach or leave the base circle is determined by the coordinate values of the start and end points of the symbolic curve.
- X — one Y — one is the coordinates of the end point of the involute curve, which is the value of P e (X e, Y e) in the figure.
- the command is made with the absolute value.
- I-11 and J-11 are the values of the center of the base circle C as viewed from the starting point Ps (Xs, Ys). Here, the command is made in incremental increments.
- R—I is the radius of the base circle
- F—I is the feed rate
- the coordinates of the start point P s (X s, Y s) of the involute curve are not in the command value, but are stored as the current position inside the numerical controller. Have been. From the starting point P s (X s, Y s) and the distance (I, J) from the starting point to the center of the base circle of the involute curve, the center coordinates 0 (X, Y.) of the base circle. ) Is calculated by the following equation.
- a tangent ⁇ s is drawn from the starting point P s (X s, Y s) to the base circle C, and the contact point is defined as P I (X I, Y 1).
- the point P1 is connected to the center 0 of the base circle C, and the angle between the line and Xputt is obtained. This is the angle ⁇ 2 of the starting point of the implot curve.
- a tangent £ e is drawn to the base circle C from the end point P e (X e, Y e) of the impute curve, and its tangent is defined as P 2 (X 2, Y 2). 0 and the angle formed by the line with the X axis is the angle ⁇ 3 at the end point of the Involute curve.
- ⁇ ⁇ can be incremented by a constant angle from the above equation, three points are obtained, and these points are caught in an arc, so that a desired involute curve can be caught.
- the specific command and the force described in the trapping formula, ' basically, the rotation direction of the symbolic curve, the moving distance, the radius of the base circle and the center coordinates need only be specified.
- various interpolation expressions can be used according to the command format.
- the amount of movement can be commanded by the angle of movement viewed from the center of the base circle.
- FIG. 2 shows a schematic diagram of the numerical control device of the present embodiment.
- 1 is a tape command, which is a tape punched from the command described above.
- Reference numeral 2 denotes a tape reader for reading the tape 1.
- Reference numeral 3 denotes a preprocessing means, which determines from the G code whether there is an instruction for interlocking an involute.
- Numeral 4 denotes an integral data compensating data producing means for producing the data necessary for capturing the above-mentioned integral data from the command value.
- 5 is a pulse distributing means.
- ⁇ is incremented by a certain angle from the data generated by the inter-involute data generating means 4 to each point of the involute curve. Is calculated, linear interpolation or circular interpolation is performed, and pulses are distributed.
- Reference numeral 6 denotes a servo control circuit, which drives a servo motor according to a command.
- Reference numeral 7 denotes a servomotor that moves the machine 8 via a ball screw or the like.
- the data for interpolation of the symbol curve is calculated in the numerical controller, and the symbol curve is interpolated from this data by linear interpolation or the like.
- interpolation of the integral curve can be performed without requiring a special program creating device or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62157303A JPS642107A (en) | 1987-06-24 | 1987-06-24 | Involute interpolating system |
JP62/157303 | 1987-06-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1988010456A1 true WO1988010456A1 (en) | 1988-12-29 |
Family
ID=15646714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1988/000581 WO1988010456A1 (en) | 1987-06-24 | 1988-06-14 | Involute interpolation method |
Country Status (4)
Country | Link |
---|---|
US (1) | US4926102A (ja) |
EP (1) | EP0321577A4 (ja) |
JP (1) | JPS642107A (ja) |
WO (1) | WO1988010456A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4935681A (en) * | 1987-08-27 | 1990-06-19 | Fanuc Ltd. | Involute interpolation method |
US5103150A (en) * | 1989-06-28 | 1992-04-07 | Fanuc Ltd. | Involute interpolation error correction system |
CN112783097A (zh) * | 2019-11-08 | 2021-05-11 | 兄弟工业株式会社 | 数值控制装置和数值控制装置的控制方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3004651B2 (ja) * | 1988-01-08 | 2000-01-31 | ファナック株式会社 | 数値制御装置 |
JPH01177618A (ja) * | 1988-01-08 | 1989-07-13 | Fanuc Ltd | インボリュート補間方式 |
JPH02199509A (ja) * | 1989-01-30 | 1990-08-07 | Fanuc Ltd | インボリュート補間速度制御方式 |
JP2833771B2 (ja) * | 1989-03-13 | 1998-12-09 | ファナック株式会社 | インボリュート補間速度制御方法 |
JPH0354610A (ja) * | 1989-07-21 | 1991-03-08 | Fanuc Ltd | インボリュート補間誤差補正方式 |
JP6733356B2 (ja) * | 2016-06-24 | 2020-07-29 | 富士通株式会社 | 演算装置、演算方法、演算プログラム、およびロボットシステム |
CN113791577B (zh) * | 2021-08-19 | 2023-07-21 | 五邑大学 | 基于数控加工系统的曲线拟合方法、电子设备和存储介质 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49101788A (ja) * | 1973-02-03 | 1974-09-26 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US28766A (en) * | 1860-06-19 | Spbing bed-bottom | ||
US28559A (en) * | 1860-06-05 | Feed of leatheb-spi | ||
US3714865A (en) * | 1971-01-07 | 1973-02-06 | Cam Apt | Apparatus for milling cams and the like, as for swiss-type screw machine cams |
JPS4924556A (ja) * | 1972-06-28 | 1974-03-05 | ||
CH560570A5 (ja) * | 1972-09-07 | 1975-04-15 | Maag Zahnraeder & Maschinen Ag | |
US3986305A (en) * | 1972-09-07 | 1976-10-19 | Maag Gear-Wheel & Machine Company Limited | Method of grinding of gear teeth |
US4548531A (en) * | 1983-05-03 | 1985-10-22 | United Technologies Corporation | Method for chamfering the edges of gear teeth |
CH665583A5 (de) * | 1983-07-08 | 1988-05-31 | Maag Zahnraeder & Maschinen Ag | Verfahren zum steuern der hubbewegung einer im teilwaelzverfahren arbeitenden zahnflankenschleifmaschine. |
IN168385B (ja) * | 1986-10-17 | 1991-03-23 | Carrier Corp |
-
1987
- 1987-06-24 JP JP62157303A patent/JPS642107A/ja active Pending
-
1988
- 1988-06-14 US US07/309,664 patent/US4926102A/en not_active Expired - Fee Related
- 1988-06-14 EP EP19880905423 patent/EP0321577A4/en not_active Ceased
- 1988-06-14 WO PCT/JP1988/000581 patent/WO1988010456A1/ja not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49101788A (ja) * | 1973-02-03 | 1974-09-26 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4935681A (en) * | 1987-08-27 | 1990-06-19 | Fanuc Ltd. | Involute interpolation method |
US5103150A (en) * | 1989-06-28 | 1992-04-07 | Fanuc Ltd. | Involute interpolation error correction system |
CN112783097A (zh) * | 2019-11-08 | 2021-05-11 | 兄弟工业株式会社 | 数值控制装置和数值控制装置的控制方法 |
Also Published As
Publication number | Publication date |
---|---|
EP0321577A1 (en) | 1989-06-28 |
EP0321577A4 (en) | 1990-12-12 |
US4926102A (en) | 1990-05-15 |
JPS642107A (en) | 1989-01-06 |
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