Cutting fluid supplying device for machine tool

Patent metadata

Field	Value
Publication number	US-11167390-B2
Application number	US-201816117012-A
Country	US
Kind code	B2
Filing date	Aug 30, 2018
Priority date	Oct 25, 2017
Publication date	Nov 9, 2021
Grant date	Nov 9, 2021

Abstract

A cutting fluid supplying device for a machine tool includes a machine tool having a structure body including a bed, a column disposed on the bed, and a spindle head disposed to the column and at least one of the ejection ports for ejecting a cutting fluid. The cutting fluid supplying device for a machine tool further includes a storage tank for storing the cutting fluid to be supplied to the machine tool, at least one of the cutting fluid flow passages for connecting the storage tank and the at least one of the ejection ports, and at least one of the pumps for applying pressure to the cutting fluid to supply the cutting fluid stored in the storage tank to the at least one of the cutting fluid flow passages. The at least one of the cutting fluid flow passages is disposed to penetrate through or disposed on an outer surface of the structure body so as to allow heat exchange between the cutting fluid and the structure body.

First claim

What is claimed is:

1. A cutting fluid supplying device, comprising:
a machine tool having a structure body and at least one ejection port for ejecting a cutting fluid, the structure body having a bed, a column disposed on the bed, and a spindle head disposed to the column;
a storage tank for storing the cutting fluid to be supplied to the machine tool;
a cutting fluid flow passage connecting the storage tank and the ejection port;
at least one pump for applying pressure to the cutting fluid to supply the cutting fluid stored in the storage tank to the cutting fluid flow passage; at least one temperature sensor for detecting a temperature of the structure body; and
at least one temperature control device for adjusting a temperature of the cutting fluid stored in the storage tank so as to make the temperature of the structure body detected by the temperature sensor identical to a predetermined temperature,
wherein the cutting fluid flow passage has a first cutting fluid flow passage disposed to penetrate through or disposed on an outer surface of the spindle head, a second cutting fluid flow passage disposed to penetrate through or disposed on an outer surface of the column, and a third cutting fluid flow passage disposed to penetrate through or disposed on an outer surface of the bed, heat exchange being possible between the cutting fluid and the spindle head via the first cutting fluid flow passage in which the cutting fluid flows and winds through the spindle head along the first cutting fluid flow passage, heat exchange being possible between the cutting fluid and the column via the second cutting fluid flow passage in which the cutting fluid flows and winds through the column along the second cutting fluid flow passage, and heat exchange being possible between the cutting fluid and the bed via the third cutting fluid flow passage in which the cutting fluid flows and winds through the bed along the third cutting fluid flow passage,
the temperature control device has a first temperature control device for adjusting the temperature of the cutting fluid to be supplied to the first cutting fluid flow passage and the second cutting fluid flow passage, respectively, and a second temperature control device for adjusting the temperature of the cutting fluid to be supplied to the third cutting fluid flow passage,
each of the first temperature control device and the second temperature control device is capable of independently controlling the temperature of the cutting fluid, and
the first cutting fluid flow passage, the second cutting fluid flow passage and the third cutting fluid flow passage are each supplied with cutting fluid from a different pump.

Assignees

• Fanuc Corp

Inventors

• Koshiishi Hikaru

Classifications

• G05B19/404

  characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia (G05B19/19, G05B19/41 take precedence) · CPC title

• B23Q11/128

  for cooling frame parts · CPC title

• B23Q11/146

  by controlling the temperature of a cutting liquid · CPC title

• B23Q11/0003

  Arrangements for preventing undesired thermal effects on tools or parts of the machine (B23Q11/10, B23Q11/12 and B23Q11/14 take precedence) · CPC title

• B23Q11/127

  for cooling motors or spindles · CPC title