Machine tool and system

Patent metadata

Field	Value
Publication number	US-2020384591-A1
Application number	US-202016883027-A
Country	US
Kind code	A1
Filing date	May 26, 2020
Priority date	Jun 6, 2019
Publication date	Dec 10, 2020
Grant date	—

Abstract

A machine tool including a first cooling unit, such as a fan, that cools at least one of a drive part that drives a component of the machine tool and an amplifier of the drive part, a second cooling unit, such as a Peltier element, that cools the at least one of the drive part and the amplifier, and a cooling control unit that controls the first cooling unit and the second cooling unit, wherein vibration caused by the second cooling unit is less than vibration caused by the first cooling unit, and the cooling control unit switches cooling of the at least one of the drive part and the amplifier, from cooling by the first cooling unit to cooling by the second cooling unit.

First claim

1 . A machine tool comprising:
a first cooling unit that cools at least one of a drive part that drives a component of the machine tool and an amplifier of the drive part; a second cooling unit that cools the at least one of the drive part and the amplifier; and a cooling control unit that controls the first cooling unit and the second cooling unit, wherein vibration caused by the second cooling unit is less than vibration caused by the first cooling unit, and the cooling control unit switches cooling of the at least one of the drive part and the amplifier, from cooling by the first cooling unit to cooling by the second cooling unit.

2 . A machine tool according to claim 1 , further comprising a machining control unit that controls the drive part based on a machining program,
wherein the cooling control unit switches from the cooling by the first cooling unit to the cooling by the second cooling unit, in response to a control command output from the machining control unit in accordance with the machining program to the drive part based.

3 . A machine tool according to claim 1 , further comprising a storage unit that stores cooling method information,
wherein the cooling method information indicates, in connection with each type of multiple types of tools used for machining, whether to use the first cooling unit or the second cooling unit; and the cooling control unit switches from the cooling by the first cooling unit to the cooling by the second cooling unit, by using information of an in-use tool among the multiple types of the tools, and the cooling method information.

4 . A machine tool according to claim 1 , further comprising:
a spindle to which a tool used for machining is attached; and a machining control unit that controls the drive part, wherein the cooling control unit switches from the cooling by the first cooling unit to the cooling by the second cooling unit, in response to control of the speed of the spindle performed by the machining control unit.

5 . A machine tool according to claim 1 , further comprising a machining control unit that controls the drive part based on a machining program,
wherein the cooling control unit switches from the cooling by the first cooling unit to the cooling by the second cooling unit, in response to information regarding machining quality received from the machining control unit.

6 . A machine tool according to claim 1 , wherein the cooling by the first cooling unit and the cooling by the second cooling unit are controlled by a computer other than a controller of the machine tool.

7 . A machine tool according to claim 1 , further comprising a learning function unit for optimizing switching of the cooling.

8 . A system comprising:
a machine tool according to claim 1 ; and a host control system capable of communicating with a controller of the machine tool, wherein the host control system accumulates learning results received from the controller of the machine tool.

9 . A system according to claim 8 , wherein the host control system is configured to send, to the controller of the machine tool, a result of learning performed in the host control system by using the learning results.

10 . A system according to claim 8 , wherein the host control system is configured to send, to another machine tool that does not have a learning function unit, the learning results or a result of learning performed in the host control system by using the learning results.

Assignees

• Fanuc Corp

Inventors

• Akutsu Yuu

Classifications

• B23Q11/10

  Arrangements for cooling or lubricating tools or work · CPC title

• B23Q11/0007

  by compensating occurring thermal dilations (B23Q15/18 takes precedence) · CPC title

• B23B25/00

  Accessories or auxiliary equipment for turning-machines (for machine tools in general B23Q; cooling or lubricating B23Q11/12) · CPC title

• B23Q1/0045

  Control panels or boxes · CPC title

• B23Q2220/006

  Spindle heads · CPC title