JPH0247U

JPH0247U -

Info

Publication number: JPH0247U
Application number: JP7519288U
Authority: JP
Priority date: 1988-06-08
Filing date: 1988-06-08
Publication date: 1990-01-05

Description

[Brief explanation of drawings]

第１図はこの考案を実施した第１実施例の主軸
部分の断面図、第２図はこの考案を実施した第２
実施例の主軸部分の断面図である。３Ａ，３Ｂ……軸受、５……中空軸（主軸）、
９……穴、１１……冷却用ガイド、１５……穴（
供給口）、２５……穴（排出口）、２７……冷却
媒体回収装置、２９……オイルパン、３５……冷
却用ノズル、３７……冷却媒体回収羽根車。 Fig. 1 is a sectional view of the main shaft portion of the first embodiment implementing this invention, and Fig. 2 is a sectional view of the main shaft portion of the first embodiment implementing this invention.
FIG. 3 is a cross-sectional view of the main shaft portion of the embodiment. 3A, 3B...Bearing, 5...Hollow shaft (main shaft),
9...hole, 11...cooling guide, 15...hole (
supply port), 25...hole (discharge port), 27...cooling medium recovery device, 29...oil pan, 35...cooling nozzle, 37...cooling medium recovery impeller.

Claims

[Scope of Claim for Utility Model Registration] (1) Both ends of a hollow shaft, which is the main shaft of a machine tool, are rotatably supported by bearings, and an inner diameter tool is held and provided on the front end side of the hollow shaft. A cooling guide is mounted and provided in the hollow shaft from the end face on the rear end side, and a passage is formed between the outer peripheral surface of the cooling guide and the hole in the hollow shaft on the side part on the rear end side of the hollow shaft. A spindle cooling device for a machine tool, characterized in that a supply port is provided for supplying the communicating cooling medium, and a discharge port is provided on the side of the front end side of the hollow shaft for discharging the cooling medium communicating with the passage. . (2) The spindle cooling device for a machine tool according to claim 1, characterized in that a cooling medium recovery device is provided on the outer periphery of the discharge port. (3) Both ends of a hollow shaft, which is the main shaft of a machine tool, are rotatably supported by bearings, and a tool is held on the outside diameter of the hollow shaft, and a tool is installed inside the hollow shaft from the end face on the rear end side of the hollow shaft. 1. A main shaft cooling device for a machine tool, characterized in that a cooling nozzle for supplying a cooling medium to a hollow shaft is provided near the rear of the hollow shaft. (4) The main shaft cooling device for a machine tool according to claim 3, characterized in that a cooling medium recovery device for discharging the cooling medium is provided on the front end side of the hollow shaft.