machine tool

The machine tool addresses premature spindle and tool deterioration by calculating idle time and adjusting release speed to prevent excessive force, ensuring safe and efficient tool detachment.

DE102020119331B4Active Publication Date: 2026-05-28FANUC LTD
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Patent Information

Application Number
DE102020119331
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-07-31
Filing Date
2020-07-22
Publication Date
2026-05-28
Estimated Expiration
2040-07-22

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Abstract

Machine tool (1), comprising: a spindle (4) which allows a tool (30) to be detachably mounted on it; a tool changing device (5) which holds a plurality of tools (30) and attaches and detaches any one of the tools (30) from the spindle (4); a storage unit (17) for date and time, which stores the date and time at which operation of the spindle (4) was last stopped; and a calculation unit (18) that calculates an unused time of the spindle (4) on the basis of the date and time stored in the storage unit (17) when the tool (30) is to be detached from the spindle (4), wherein In a case where the unused time calculated by the calculation unit (18) is longer than a specified threshold, the tool changing device (5) performs a release movement of the tool (30) from the spindle (4) for a longer time compared to a case where the calculated unused time is equal to or less than the threshold.
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Citation Information

Patent Citations

  • Numerical control that can check the assembly state of a tool used for machining

    DE102016005559A1

  • Tool weight detecting system for machine tool

    JP1996115113A

  • JP000H08115113A