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EP0087946A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method and apparatus for creating numerical control data
Assignee: Fanuc Corp
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Filing: 1983-02-25
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Granted: —
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Expires: 2003-02-25
Abstract
Abstract A method and apparatus for creating numerical control data by entering coordinates which specify points on a drawing placed on a tablet. A minimum reading distance is preset at the time that coordinate values of points are to be entered from the tablet. This is followed by entering the coordinate values of prescribed points on the drawing by designating the points at random using coordinate designating means, generating the coordinate values of whatever point is being designated by the coordinate designating means each time said means travel a distance equivalent to the minimum reading distance as said means is moved continuously along a graphic appearing on the drawing, and creating numerical control data by using the coordinate values. Numerical control data approximating straight line segments can be readily created, even for curves other than straight lines and circular arcs, by setting a sampling pitch interval to a suitable value.
Inventors
- 👤 Hajimu Kishi
- 👤 Masaki Seki
- 👤 Kunio Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 11:03
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/048; G06F3/0484; G06F3/04842; G05; G05B; G05B19/00; G05B19/02; G05B19/42; G05B19/4202; G05B19/4205; G06F3/03; G06F3/033; G06F3/04845; G05B2219/00; G05B2219/30; G05B2219/34; G05B2219/34101; G05B2219/35; G05B2219/35461; G05B2219/36; G05B2219/36324
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
A method of creating numerical control data by entering coordinate values specifying a point on a drawing, comprising the steps of: (a) setting a minimum reading distance when coordinate values specifying points on a drawing placed on a tablet are to be entered; (b) entering coordinate values of points on the drawing by designating the points at random by coordinate designating means; (c) generating the coordinate values of whatever point is being designated by the coordinate designating means each time said coordinate designating means travels a distance equivalent to the minimum reading distance as said coordinate designating means is moved continuously along a graphic appearing on the drawing; and ( d )creating numerical control data by using said coordinate values.
Claim 2
Independent Claim
120 words
A method of creating numerical control data by entering coordinate values specifying a point on a drawing, comprising the steps of: (a) setting a minimum reading distance when coordinate values specifying points on a drawing placed on a tablet are to be entered; (b) entering coordinate values of points on the drawing by designating the points at random by coordinate designating means; (c) generating the coordinate values of whatever point is being designated by the coordinate designating means each time said coordinate designating means travels a distance equivalent to the minimum reading distance as said coordinate designating means is moved continuously along a graphic appearing on the drawing; and ( d )creating numerical control data by using said coordinate values.
Claim 3
Dependent Claim
46 words
The method according to claim 1, further including a step of generating the coordinate values of whatever point is being designated by said coordinate designating means each time a distance traveled by said coordinate designating means along an axis becomes equivalent to the minimum reading distance.
Claim 4
Independent Claim
125 words
An apparatus for creating numerical control data by entering coordinate values of points plotted on a drawing comprising: means for (a) setting a minimum reading distance when coordinate values specifying points on a drawing placed on a tablet are to be entered; means for (b) entering coordinate values of points on the drawing by designating the points at random by coordinate designating means; means for (c) generating the coordinate values of whatever point is being designated by the coordinate .designating means each time said coordinate designating means travels a distance equivalent to the minimum rea ding distance as said coordinate designating means is moved continuously along a graphic appearing on the drawing; and means for (d) creating numerical control data by using said coordinate values.
Claim 5
Independent Claim
125 words
An apparatus for creating numerical control data by entering coordinate values of points plotted on a drawing comprising: means for (a) setting a minimum reading distance when coordinate values specifying points on a drawing placed on a tablet are to be entered; means for (b) entering coordinate values of points on the drawing by designating the points at random by coordinate designating means; means for (c) generating the coordinate values of whatever point is being designated by the coordinate .designating means each time said coordinate designating means travels a distance equivalent to the minimum rea ding distance as said coordinate designating means is moved continuously along a graphic appearing on the drawing; and means for (d) creating numerical control data by using said coordinate values.
Claim 6
Dependent Claim
220 words
The apparatus according to claim 3, comprising: a first processor for receiving as inputs thereto coordinate values (X N ,Y N ) of a present position designated by coordinate designating means and coordinate values (X 0 ,Y 0 ) of an immediately preceding position designated by said coordinate designating means, for computing coordinate values ( d X = X N -X 0 , a Y = Y N- Y O ) of an immediately preceding position for each X and Y coordinate, based on the coordinate values of said present position; a comparator for receiving the computed values from said processor for comparing the magnitude of said computed values with a minimum reading distance stored in a register, said comparator producing a gate signal applied to said comparator and to a gate circuit when said computed values are larger than the minimum reading distance for each X and Y coordinate; and a second processor for creating numerical control data in a case where the entered coordinate values (X N ,Y N ) of the present position replace old coordinate values, the coordinate values (X N ,Y N ) of said present position are received as an input thereto through the gate circuit, and selection switches on the coordinate designating means are in a mode for producing linear cutting data. ;
Claim 7
Dependent Claim
48 words
The apparatus according to claim 4, in which the selection switches on said coordinate designating means are capable of selecting an output of rapid-traverse data or linear cutting data in a case where the coordinate designating means is moved to the present position from an immediately preceding position.
Claim 8
Dependent Claim
23 words
The apparatus according to claim 4 or 5, further comprising a data memory for storing numerical control data created by said second processor.
References Cited (Backward Citations)
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