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Guide bush

A technology for guiding sleeves and inner cylinders, which is used in the manufacture of tools, chucks, toolholder accessories, etc., can solve the problems of inner cylinder loss, loss, and increase the frequency of inner cylinder replacement.

Inactive Publication Date: 2007-02-07
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With such an elastic inner cylinder, especially when the material itself is made of a relatively soft material, there is a risk of loss on the bar support surface due to friction with the bar when it is fed in the axial direction of the bar.
In particular, when a "drawn material" drawn to a predetermined diameter is directly used as the bar material to be processed, it is easy to cause loss of the inner cylinder due to the low accuracy of the outer dimension of the drawn material and the rough surface. As a result, there is a concern Will increase the replacement frequency of the inner cylinder

Method used

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Embodiment Construction

[0039] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same reference numerals are assigned to the same or similar constituent elements.

[0040] With reference to the accompanying drawings, Figure 1A and Figure 1B A guide bush 10 according to a first embodiment of the present invention is shown. In an automatic lathe, as a hollow cylindrical auxiliary support device that supports the gripped bar on the main shaft near the part to be processed at its tip, it is installed on the lathe machine near the position where the tool performs the machining operation. superior. The guide bush 10 of the first embodiment can be applied to any one of a rotary guide bush and a solid guide bush.

[0041]The guide sleeve 10 includes a hollow cylindrical base portion 12, which is adjacent to one end of the base portion 12 in the axial direction, and is a hollow cylindrical bar support that can feed the cente...

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PUM

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Abstract

A guide bush (10) has a bar member support (14) adjacent one axial end of a base (12). The bar member support (14) comprises a diametrically elastically deformable outer sleeve portion (16) integrally connected to the base (12), a plurality of inner sleeve piece members (20) disposed inside the outer sleeve portion (16), made of hard material and cooperating with each other to form a cylindrical bar member support surface (18), and an elastic member (22) for elastically holding the inner sleeve piece members (20) in the position where they form the bar member support surface (18). The elastic member (22) comprises elastic connecting elements (34) each interposed between adjacent inner sleeve piece members (20) to elastically interconnect the latter, and elastic intermediate sleeves (36) each interposed between the outer sleeve portion (16) and each inner sleeve piece member (20) to elastically support these inner sleeve piece members (20) from outside. The elastic connecting elements (34) may be formed of liquid gaskets.

Description

technical field [0001] This invention relates to guide bushings for supporting a bar during turning in the vicinity of the part being machined. The invention also relates to an automatic lathe provided with such a guide bush. Background technique [0002] In machine tools that can perform various automatic turning processes such as NC lathes (collectively referred to as automatic lathes in this specification), there is a support near the processing part of the tip that is installed on the machine table near the machining operation position of the tool. An automatic lathe is known in which a rod-shaped workpiece to be processed (hereinafter referred to as a bar) held on a spindle is used as a guide bush as an auxiliary support device. The guide sleeve has a hollow cylindrical bar material support part that can elastically deform in the radial direction. The bar material in the turning process is supported on the bar material support part so that it does not vibrate at the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B13/12B23B31/20
CPCB23B2228/24B23B31/202B23B2226/33B23B13/126
Inventor 长谷川重雄野岛由洋
Owner CITIZEN WATCH CO LTD