Machine tool

Patent metadata

Field	Value
Publication number	US-11517990-B2
Application number	US-201816755882-A
Country	US
Kind code	B2
Filing date	Oct 3, 2018
Priority date	Oct 31, 2017
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A machine tool (1) includes a spindle (32) supported on a support surface (37a) of a support body (37) with such an orientation that the longitudinal axis of the spindle extends along the support surface (37a). The spindle (32) is movable in a vertical direction that is perpendicular to the longitudinal axis of the spindle (32). The support body (37) is provided with a ventilation hole (80) extending through the support body (37) between the support surface (37a) and a surface (37b) facing in the direction opposite to the support surface (37a), to open toward the spindle (32).

First claim

The invention claimed is:

1. A machine tool comprising:
a headstock,
a spindle rotatably supported by the headstock,
a support body having a support surface that supports the headstock and an opposite surface that is located opposite to the support surface, and
a moving mechanism disposed on the support surface of the support body, for moving the headstock vertically relative to the support surface, wherein
the spindle has a longitudinal axis that extends along the support surface,
the spindle is movable in a vertical direction, the vertical direction being disposed along the support surface and extending perpendicular to the longitudinal axis,
the support body having a ventilation hole that extends from the opposite surface, through the support body, to the support surface, to open toward the spindle, wherein
the machine tool further comprises a blower that is arranged at the opposite surface to forcibly flow air through the ventilation hole, and
the blower is arranged upstream of the ventilation hole in terms of cooling airflow.

2. The machine tool according to claim 1 , wherein the spindle holds a workpiece that is to be cut.

3. The machine tool according to claim 2 , wherein the machine tool further comprises a tool stand on which a plurality of processing tools for cutting the workpiece are supported.

4. The machine tool according to claim 3 , wherein the processing tools are configured as rotary tools.

Assignees

• Citizen Watch Co Ltd
• Citizen Machinery Co Ltd

Inventors

• Yabe Koichi
• Ando Yosuke
• Wada Yosuke
• Katagishi Wataru

Classifications

• B23Q1/58

  a single sliding pair · CPC title

• B23Q11/14

  Methods or arrangements for maintaining a constant temperature in parts of machine tools · CPC title

• B23Q11/145 Primary

  using a jet of gas or cutting liquid · CPC title

• B23Q11/127 Primary

  for cooling motors or spindles · CPC title

• B23Q1/015

  Frames, beds, pillars · CPC title