Spindle device of machine tool

Abstract

A spindle device of a machine tool stably injecting spray coolant from the tip of a tool (26) in a tool holder (25) and suppressing a waste of the spray coolant, wherein the tool holder (25) is fixed to the tip part of a spindle (2) mechanically detachably through clamp means (KR), an extension passage (101) is formed in the state that an in-spindle spray coolant passage (100) formed in the center part of the spindle (2) is extended forward (f2), and the in-spindle spray coolant passage (100) is formed to communicate with an in-holder spray coolant passage (102) formed in the center part of the tool holder (25) through the extension passage (101).

Description

technical field [0001] The invention relates to a machine tool spindle device capable of spraying mist cutting fluid from the top of a cutting tool. Background technique [0002] When cutting with a machine tool, in order to cool and lubricate the workpiece or cutting tool, or remove chips, a large amount of cutting fluid must be supplied to the processing department, but this has caused many problems: the cutting fluid will pollute the environment and bring harm to human health. Adverse effects, the treatment of waste cutting fluid requires a lot of cost, excessive cooling of the workpiece will shorten the life of the cutting tool, or too much cutting fluid will cause sliding wear when the cutting tool is used for fine cutting. Since the cutting fluid adheres to the chips, it is necessary to separate the cutting fluid adhered to the chips when disposing of the chips or reusing them. [0003] In order to solve these problems, in recent years, a machine tool that makes a ver...

AI Technical Summary

Problems solved by technology

[0002] When cutting with a machine tool, in order to cool and lubricate the workpiece or cutting tool, or remove chips, a large amount of cutting fluid must be supplied to the processing department, but this has caused many problems: the cutting fluid will pollute the environment and bring harm to human health. Adverse effects, the treatment of waste cutting fluid requires a lot of cost, excessive cooling of the workpiece will shorten the life of the cutting tool, or too much cutting fluid will cause sliding wear when the cutting tool is used for fine cutting. The cutting fluid adheres to the chips, so when the chips are disposed of or reused, the cutting fluid adhering to the chips must be separated

[0009] But adopt above-mentioned existing machine tool, the mist cutting fluid that flows in the central hole of front and rear guide rod parts 16 can flow out in the atmosphere through the gap between parts, causes the waste of cutting fluid

[0010] In addition, since the diameter of the central hole of the front and rear guide rod members 16 is larger than the diameter of the front and rear channels, the mist cutting fluid flowing into the central hole will liquefy, and the liquefaction of the cutting fluid will prevent the cutting fluid from being stably supplied to the The processing part of the workpiece is insensitive to the command to start and stop spraying mist cutting fluid from the tip of the cutting tool

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