Tool calibration system for micromachining system

Details Tool calibration system for micromachining system Tool calibration system for micromachining system

1977-12-14

1979-03-06

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33174L, 33185R, G01B 500

Patent

active

041422961

ABSTRACT:
A tool calibration system including a tool calibration fixture and a tool height and offset calibration insert for calibrating the position of a tool bit in a micromachining tool system. The tool calibration fixture comprises a yokelike structure having a triangular head, a cavity in the triangular head, and a port which communicates a side of the triangular head with the cavity. Yoke arms integral with the triangular head extend along each side of a tool bar and a tool head of the micromachining tool system. The yoke arms are secured to the tool bar to place the cavity around a tool bit which may be mounted to the end of the tool head. Three linear variable differential transformer's (LVDT) are adjustably mounted in the triangular head along an X axis, a Y axis, and a Z axis. The calibration insert comprises a main base which can be mounted in the tool head of the micromachining tool system in place of a tool holder and a reference projection extending from a front surface of the main base. Reference surfaces of the calibration insert and a reference surface on a tool bar standard length are used to set the three LVDT's of the calibration fixture to the tool reference position. These positions are transferred permanently to a mastering station. The tool calibration fixture is then used to transfer the tool reference position of the mastering station to the tool bit.

REFERENCES:
patent: 3670421 (1972-06-01), Kiewicz et al.
patent: 4083272 (1978-04-01), Miller

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