Boots – shoes – and leggings
Patent
1982-09-07
1985-01-08
Smith, Jerry
Boots, shoes, and leggings
364702, 364720, 364474, 364853, 318573, G05B 1925
Patent
active
044930321
ABSTRACT:
A method and apparatus are disclosed for providing very precise incremental motion of a numerically controlled machine tool, or other similarly controlled object, along a circularly arced path. For a mutually perpendicular X and Y coordinate system, X and Y indices are determined based on certain prescribed input information related to the parameters of the circular path and the relative rate of motion between the machine tool and the workpiece, and on immediate, continuously recomputed, coordinates of the tool or object. The indices are each scaled by a modulus related to the radius of the arc to generate incremental distances .DELTA.X and .DELTA.Y according to which the next move is to be made. The process is reiterated until the desired circular path is complete. In both method and apparatus, only integer values of .DELTA.X and .DELTA.Y are used for implementing each increment of motion. Non-integer values are carried forward to the next iteration of the process to prevent error accumulation.
REFERENCES:
patent: 4243924 (1981-01-01), Onoda et al.
patent: 4423481 (1983-12-01), Reid-Green et al.
Austin Ormand R.
General Electric Company
MacDonald Allen
Smith Jerry
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