METHOD FOR DETERMINING THE POSITION OF A TOOL
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United States of America Patent
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Issued Date -
Jun 7, 2012
app pub date -
Dec 5, 2011
filing date -
Dec 7, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A machine tool (10) is equipped with a main spindle (24) movable via a machine control (26) and associated measuring systems (26a) relative to a workpiece holder (12) in a coordinate system (27) with a coordinate origin (28), and with a tool magazine (31) having storage spaces (30) for tools (25, 32, 33, 34). The main spindle (24) is moved into a tool change position in which a used tool (25) is exchanged for a new tool (32) to be used. A separate measuring system (43, 46) indicates whether the main spindle (24), in connection with the tool change, has assumed a measuring position (50) in which the position of the main spindle (24) relative to the coordinate origin (28) is determined via a machine control (26) and associated measuring systems (26a). This position is used in order to determine at least one correction value (Δy, Δz). A method for compensating for thermal displacements is carried out on the machine tool (20)
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