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Instrument exchanging device

A tool exchange, tool technology, used in positioning devices, manufacturing tools, transportation and packaging, etc., can solve problems such as applying impact load, loosening rod wear, loosening pin wear and loosening time, etc.

Active Publication Date: 2011-02-02
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above conventional configuration, a collision load is applied when the tool is released, that is, when the release lever collides with the release pin.
Especially when the operating speed is increased to speed up the opening of the tool, the impact load will increase, which may cause wear of the release lever, wear of the release pin, or misalignment of the release time.
In addition, wear powder entering the bearing of the main shaft will damage the bearing
Also, there is a problem of too much noise due to the relatively loud impact sound

Method used

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Embodiment Construction

[0015] Refer below Figure 1 ~ Figure 3 The first embodiment of the present invention will be described. first, figure 1 It is a longitudinal sectional view showing a schematic structure of a machine tool to which this embodiment is applied. Such as figure 1 As shown, the machine tool 1 has: a column 2 erected on the base platform (not shown); a frame 3 composed of a box-shaped hollow shell horizontally arranged and fixed on the front surface of the column 2; The main shaft head 4 arranged in the frame 3 ; the rotatable indexing tool box 6 arranged on the frame 3 through the box supporting seat 5 .

[0016] A guide rail 7 is arranged vertically on the column 2 , and a spindle head 4 is provided on the guide rail 7 so as to be able to move up and down (Z-axis) freely via slide blocks 8 , 8 . A rotatable ball screw 9 is provided parallel to the guide rail 7 on the column 2 , and the ball screw 9 is screwed into and passed through a nut 10 fixed on the back of the spindle hea...

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Abstract

The invention relates to a tool exchanging device, which comprises a loosing operation component (22) which can lead a tool (16) which is mounted on a main shaft (12) to be opened through contacting with a loosing component (25) to push is arranged on a main shaft head (4), and an operation mechanism (23) which operates the loosing operation component (22). The invention is characterized in that a loosing cam (26) is arranged on the loosing operation component (22) or a fixed portion, a function part (27) which operates the loosing operation component (22) through contacting with a cam surface (29) of the loosing cam (26) is arranged on the fixed portion or the loosing operation component (22), and average moving speed of the loosing operation component (22) during the period of starting from the time that the loosing operation component (22) moves to the direction which is close to the loosing component (25) to the time before nearly colliding with the loosing component (25) is defined as V1, the moving speed of the loosing operation component (22) when the loosing operation component (22) is collided with the loosing component (25) is defined as V2, and the shape of the cam surface (29) is constituted in the form of V1>=V2.

Description

(1) Technical field [0001] The present invention relates to a tool changer having a function of holding or releasing a tool of a machine tool on a spindle. (2) Background technology [0002] As an example of such a tool exchange device, there is a device disclosed in Japanese Patent Application Laid-Open No. 11-33805 (hereinafter referred to as Patent Document 1). In this device, a rotatable release lever (release operation member) is provided on the spindle head rotatably supporting the spindle. When the release lever rotates, the release lever collides with the release pin (release member) to Push it to open the tool mounted on the spindle. [0003] The rotation mechanism that rotates the release lever includes a release cam provided at a fixed portion and a roller (acting portion) rotatably provided on the release lever. The roller rotates the release lever by contacting the cam surface of the release cam. [0004] In the above configuration, when the spindle head is r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/157B23B31/24
CPCA61L2/232B32B27/18B62B5/06
Inventor 野村裕昭
Owner BROTHER KOGYO KK
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