Tool holder

Inactive Publication Date: 2007-08-02
DAIDO METAL CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]The present invention is made in view of the above described circumferences, and an object of the present invention is to provide a tool holder having high responsiveness when supplying a generated water drop with oil film to a work piece, and capable of supplying a sufficient amount of the water drop with oil film to the work piece.
[0012]In the tool holder in the invention according to claim 1, when the oil supplied via the oil supply passage and the oil introducing passage reaches the atomizing space, the oil is atomized by the air flow of the carrier gas consisting of the compressed air, and then the water supplied from the water supply passage and the water introducing passage is formed into the water drop in the atomizing space by the air flow of the oil containing compressed air containing the atomized oil to generate the water drop with oil film in which the oil film is formed on the surface of the water drop, and the water drop with oil film is supplied to the work piece through the top nozzle and the in-tool passage. Therefore, since a position in which the water drop with oil film is generated is formed at a position extremely close to the tool, the responsiveness when supplying the water drop with oil film to the work piece can be enhanced. That is, since the process before the generated water drop with oil film is supplied to the work piece is short, the response time before the water drop with oil film attached is supplied to the work piece through the in-tool passage after the valve which supplies necessary compressed air for generation of the water drop with oil film is opened, and the oil containing the compressed air is fed out to generate the water drop with oil film can be made short.

Problems solved by technology

However, in the case of the method of generating the water drop with oil film as a working fluid and then supplying the working fluid to the work piece as described above, since a device for generating the water drop with oil film has conventionally been equipped at the outside of the tool holder, there are problems that responsiveness is slow when the water drop with oil film is supplied to the work piece, and the discharge amount of the water drop with oil film to the work piece is insufficient.
Namely, since the water drop with oil film is generated at a position away from the tool holder, the time after a valve for supplying required air for generation of the water drop with oil film is opened to feed the air until the generated water drop with oil film is supplied to the work piece via the tool holder and the tool is long, and further, loss occurs in the process until the generated water drop with oil film is supplied to the work piece, which makes it impossible to supply a sufficient amount of the water drop with oil film to the work piece.

Method used

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Embodiment Construction

[0022]Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, the outline of a machine tool 2 on which a tool holder 1 according to the embodiment is mounted will be described with reference to FIG. 1. FIG. 1 is a side view of a spindle part 3 of the machine tool 2, on which the tool holder 1 according to the embodiment is mounted.

[0023]As shown in FIG. 1, the machine tool 2 such as a machining center generally has the spindle part 3 of a cylindrical shape to which the tool holder 1 holding a tool 6 for working a work piece is fitted. A spindle 4 which is rotationally driven by a drive source of the machine tool 2 is located in a substantially center of the spindle part 3, and the tool holder 1 is fitted to a tip end of the spindle 4, whereby the tool 6 rotates to work the work piece.

[0024]The tool holder 1 according to the embodiment is composed of a tool mounting part 10 to which the tool 6 is fitted, and a support part 20 which...

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Abstract

In a tool holder, when oil supplied via an oil supply passage and an oil introducing passage reaches an atomizing space, the oil is atomized by an air flow of carrier gas consisting of compressed air, and then water supplied from a water supply passage and a water introducing passage is formed into a water drop in the atomizing space by an air flow of oil containing compressed air to generate the water drop with oil film in which the oil film is formed on a surface of the water drop. Since the water drop with oil film is supplied to a work piece through a top nozzle and an in-tool passage, the water drop with oil film is generated at an extremely close location to a tool, and therefore, responsiveness when supplying the water drop with oil film to the work piece can be enhanced.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a tool holder which is mounted on a spindle of a machine tool to hold a tool for machining a work piece.[0003]2. Description of Related Art[0004]When performing machining such as cutting and grinding for a work piece, lubrication of the work piece and a working tool and cooling of heat generated by the machining are performed by sprinkling a working fluid such as oil and emulsion in a liquid state, or atomizing the liquid to spray it on a surface of the work piece to be machined from a nozzle provided toward a vicinity of a working point, in order to improve machining accuracy and increase a life of the working tool. In the case of atomizing the working fluid to spray it, there is proposed a method of mixing the working fluids of different kinds such as oil and water, and thereafter spraying the working fluids on the machined surface of the work piece, or a method of providing a pluralit...

Claims

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Application Information

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IPC IPC(8): B23Q11/10
CPCB23B31/02B23B2250/12B23Q11/10Y10T408/458B23Q2220/008Y10T409/309408Y10T409/304032B23Q11/1046Y02P70/10
InventorMATSUMURA, HIDEYUMIYOSHIMURA, HIROSHI
OwnerDAIDO METAL CO INC