US 3,939,330 AGranted

Vector conversion system

AssigneeWestinghouse Electric Corp.

InventorFrancis A. Fluet

Life of this patent

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Abstract

A vector conversion system for a numerical contouring control having a programmed machine path with at least two axial displacements .DELTA.X,.DELTA.Y, with a given cutter radius RCRAD. Master vector and slave vector computers are provided and arranged to operate in rotation and multiplication modes. The master vector computer receives signals which are a function of .DELTA.X and .DELTA.Y and delivers a counter rotational control signal and an RSS signal where RSS = .sqroot..DELTA.X.sup.2 + .DELTA.Y.sup.2. The slave vector computer receives the counter rotational control signal, a "0" signal and a signal which is a function of RCRAD, and delivers output signals IRC and JRC which are the orthogonal components of RCRAD. When these components IRC and JRC are interchanged, in effect, vector RCRAD is normal to the programmed machine path.

Claims12

Dependent claims

A vector conversion digital system for a numerical contouring control having a programmed machine path with at least two axial displacements .DELTA.X, .DELTA.Y, with a given cutter radius RCRAD, the vectoral conversions being consummated prior to the incremental commanded displacement of said cutter, comprising:

a. means for master vector rotation and multiplication for receiving signals which are a function of said displacements .DELTA.X, .DELTA.Y, and for delivering a counter rotational control signal, and an RSS signal where:
RSS = .sqroot..DELTA.X.sup.2 + .DELTA.Y.sup.2 and
b. means for slave vector rotation and multiplication connected to receive said counter rotational control signal, and input signals which are 0 and a function of RCRAD respectively, and for delivering output signals IRC and JRC which are the orthogonal components of RCRAD, which components, when interchanged, position RCRAD normal to said programmed machine path.

Dependencies are inferred from the claim text.

Facts

Application: 05/513,915Filed 10 Oct 1974
Granted: 17 Feb 1976
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G05B 19/4103
Characterised by interpolation, e.g. the computation of intermediate points between programmed end points to define the path to be followed and…:…
G06F 7/5446
For evaluating functions by calculation: using crossaddition algorithms, e.g. CORDIC
G05B 2219/43187
Speed, acceleration, deceleration control ADC: vector speed, ratio between axis, without feedback
G05B 2219/50336
Machine tool, machine tool null till machine tool work handling: tool, probe offset for curves, surfaces, contouring