Multi-positioner machining system

A multi-positioner machining system for one or more workpieces, comprising:

• (a) a plurality of modular single-point-tool machining cells, each cell having a rapid positioning assembly for positioning the tool at rates that approach or exceed one G for one or more machining storkes on a single workpiece in a single clamped fixture position, each positioning assembly being comprised of a plurality of support elements each rapidly positionable while stacked on one another, and a plurality of linear electrical motors effective to move said elements, said cells being sufficiently separated from each other to eliminate transfer of inertial or vibratory forces therebetween that detract from cell stiffness;
• (b) worktable means for each machining cell and including adjustment apparatus to flexibly orient a workpiece for machining by one cell;
• (c) a fixture having apparatus lockable to a workpiece and clampable to each worktable to present predetermined faces of said workpeice to the machining cell for machining;
• and
• (d) transfer means for rapidly moving a fixtured workpiece from cell to cell to facilitate clamping on a worktable.

A system of machining workpieces, comprising:

• (a) a plural machining cells spaced along a path, each cell having a single-point--tool carried by a rapid-positioning assembly for positioning the tool for multiple insertions into a workpiece, as well as rapid tool exchange, at speeds that approach or exceed one G, each positioning assembly being comprised of a plurality of support elements each rapidly positionable while stacked on one another, and a plurality of linear electrical motors effective to move said elements;
• (b) table means for presenting a table surface in a selected plane for each cell;
• (c) workpiece mounting means for each table surface having keying surfaces and apparatus for lockingly mating with a reference point of such table surface;
• (d) transfer means for rapidly replacing a machined workpiece with an unmachined workpiece on a table surface, said means being effective to transfer the workpiece to the next table surface while the substituted workpiece is undergoing machining;
• and
• (e) electrical control means for activating said positioning assemblies and transfer means.