Spindle device of machine tool

Abstract

A spindle device of a machine tool, which can prevent the liquefaction of atomized cutting fluid in atomized cutting fluid passage downstream of a straightening unit 14, enhance a responsiveness to an ejecting start or stop instruction, and prevent a waste of cutting fluid. The spindle device for a machine tool has atomized cutting liquid passage (e1, e2) each having a single-shape passage section and formed inside the device ranging from the spindle 1 to the tip end of a cutting tool 13 mounted thereto in one piece, and is operated so as to eject atomized cutting tool 13 via the atomized cutting fluid passages (e1, e2), wherein a straightening unit 14 formed with a plurality of small-diameter passages h are provided in the middle of the cutting liquid passages (e1, e2).

Description

technical field [0001] The present invention relates to a spindle device of a processing machine in which mist cutting fluid is sprayed from the front end of a tool. Background technique [0002] In the processing using processing machines, in order to cool and lubricate the workpiece and the tool, or remove chips, a large amount of cutting fluid must be supplied to the processing part, but in this way, not only the environmental pollution caused by the cutting fluid but also the Adverse effects on human health, high costs caused by waste oil treatment of cutting fluid, reduced tool life due to overcooling of the workpiece, or sliding wear of the tool during fine cutting due to excessive cutting fluid, etc. When cutting, a large amount of cutting fluid adheres to the chips, so when the chips are processed or reused, the cutting oil attached to them must be separated. [0003] In order to solve these problems, in recent years, so-called dry cutting processing machines have a...

AI Technical Summary

Problems solved by technology

[0008] Here, what is important is that the speed of the thicker layer of mist cutting fluid near the peripheral surface of the passage is much lower than the corresponding speed at the center of the passage, so the tendency of the liquid cutting fluid to stay on the surrounding wall surface increases, In addition, the stable supply of the mist cutting fluid is hindered, resulting in waste, and the reactivity when switching the supply of the mist cutting fluid and stopping the operation is also reduced.

Images