Tool calibration system for micromachining system

Patent · 05 March 1979

OSTI ID:863300

Miller, Donald M ^[1]

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1. Sunnyside, WA

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.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4142296
• Application Number: 05/860,653
• OSTI ID: 863300
• Country of Publication: United States
• Language: English

Related Subjects

/33/
adjustably
adjustably mounted
arms
axis
bar
base
bit
calibrating
calibration
cavity
communicates
comprises
differential
differential transformer
extend
extending
fixture
front
front surface
head
height
holder
including
insert
integral
length
linear
linear variable
lvdt
machining tool
main
mastering
micromachining
micromachining tool
mounted
offset
permanently
position
positions
projection
reference
reference position
reference surface
secured
set
standard
station
structure
surface
surfaces
tool
tool bar
tool calibration
tool head
tool holder
transfer
transferred
transformer
triangular
variable
variable differential
yoke
yokelike
z
z axis