Machine tool and control device for managing a usage time of a tool

Patent metadata

Field	Value
Publication number	US-12564912-B2
Application number	US-202018249308-A
Country	US
Kind code	B2
Filing date	Nov 26, 2020
Priority date	Nov 26, 2020
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

A machine tool includes a tool main spindle device to execute machining of a first system in a first workpiece main spindle device for rotationally holding a workpiece and machining of a second system in a second workpiece main spindle device for rotationally holding the workpiece by an exchangeable main spindle head tool. Drive control of each device is performed by a control device, the control device including a tool management processing section to calculate a total usage time of the main spindle head tool based on the machining of the first system or the machining of the second system executed in the tool main spindle device, to store the calculated total usage time as first tool management data or second tool management data, and to rewrite the same total usage time in the other of the second tool management data or the first tool management data.

First claim

The invention claimed is:

1 . A machine tool system comprising:
a machine tool comprising:
a first workpiece main spindle device;
a second workpiece main spindle device;
a tool main spindle device configured to:
execute, by an exchangeable main spindle head tool, machining of a first system in the first workpiece main spindle device configured to rotationally hold a workpiece; and
execute, by the exchangeable main spindle head tool, machining of a second system in the second workpiece main spindle device configured to rotationally hold the workpiece; and

a control device including a processor and a memory wherein:
the control device is configured to drive control of the first and second workpiece main spindle devices and the tool main spindle device;
the memory comprises a first tool management data and a second tool management data; and
the processor is configured to:
calculate a total usage time of the main spindle head tool based on the machining of the first system or the machining of the second system executed in the tool main spindle device;
store the calculated total usage time in the first tool management data or second tool management data; and
rewrite the same total usage time in the other of the second tool management data or the first tool management data.

2 . The machine tool system according to claim 1 , wherein the processor of the control device calculates a machining time period during which the exchangeable main spindle head tool actually contacts a workpiece from information of a machining program for executing the machining in the first system or the second system.

3 . The machine tool system according to claim 1 , wherein the processor of the control device reads the total usage time of the exchangeable main spindle head tool calculated and stored according to the machining of the first system or the second system from a first one of the stored first tool management data or the stored second tool management data, and writes the total usage time in the other of the second tool management data or the first tool management data as the total usage time in the exchangeable main spindle head tool.

4 . The machine tool system according to claim 1 , wherein the processor of the control device rewrites the total usage time of the exchangeable main spindle head tool every time a machining program in the first system or the second system is finished.

Assignees

• Fuji Corp

Inventors

• Mori Masahiko

Classifications

• B23B3/30

  Turning-machines with two or more working-spindles, e.g. in fixed arrangement · CPC title

• G05B19/042

  using digital processors (G05B19/05 takes precedence) · CPC title

• B23B3/32

  for performing identical operations simultaneously on two or more workpieces · CPC title

• B23Q17/0995 Primary

  Tool life management · CPC title