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Friction damping guide head

A friction damping, guide head technology, applied in boring heads, tool holder accessories, metal processing equipment, etc., can solve the problem that the boring head cannot perform radial feed, cannot perform inner hole boring, and has weak boring flexibility. and other problems, to achieve the effect of improving processing practicability, small structure, and improving flexibility

Inactive Publication Date: 2015-09-02
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the circumferential restriction of the leading end of the boring bar, the boring head cannot carry out radial feed, nor can it carry out inner hole boring, and the flexibility of boring is weak

Method used

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Embodiment

[0033] Such as figure 1 It is a schematic diagram of the overall structure of the friction damping guide head of the present invention, which is mainly suitable for processing deep and long holes with relatively large length and diameter. The friction damping guide head is mainly composed of a guide part and a friction damping part. The guide part can provide a support for the boring bar to prevent the boring bar from being deformed by force. The friction damping part increases the damping of the boring bar system and reduces the resonance of the boring bar. amplitude.

[0034]The guide part is mainly composed of a guide jacket 5, an outer stopper 2, a guide shaft 6, a fastening screw 1, a ball 4, a first elastic seal 3-1 and a second elastic seal 3-2. The guide jacket 5 is set on the outside of the journal of the guide shaft 6, and the ball 4 is rotated on the journal end of the guide shaft 6. The gap between the guide jacket 5 and the journal end of the guide shaft 6 is pro...

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Abstract

The invention discloses a friction damping guide head for deep hole boring. The friction damping guide head mainly comprises a guide outer sleeve, balls, a guide shaft, friction plates, metal gaskets, a bolt, a nut, a spring and a slide block, wherein the guide outer sleeve is arranged outside the guide shaft through the balls; the metal gaskets are fixed in a square groove of the guide shaft by pressing the friction plates; the nut compresses the spring to ensure the positive pressures between the friction plates and the slide block. During boring, the friction damping guide head is arranged on the end part of a boring rod, the slide block is fixedly connected with the end part of the boring rod, and the guide outer sleeve is in contact with the inner wall of a workpiece and rotates along with the workpiece. The friction damping guide head disclosed by the invention is suitable for deep-hole boring and internal spline boring machining in deep holes. Compared with a guide device in the prior art, the friction damping guide head has the advantages that radial feeding of the boring rod is not limited, damping of a boring rod system is increased, the damping performance of the boring rod system is greatly improved, deep-long holes of which the length-diameter ratios are increased can be machined with the boring rod system, and the machining conditions of the deep-long holes are improved.

Description

technical field [0001] The invention relates to a guiding device, in particular to a friction damping guiding head for deep hole boring. Background technique [0002] The friction damping guide head is a guiding device installed at the end of the boring bar and in contact with the inner wall of the workpiece, which can increase the damping of the boring bar system and support the boring bar to prevent the boring bar from being deformed or vibrating. During the boring process, because the boring tool is in a semi-closed state, the structural size of the boring bar is limited, and the rigidity of the boring bar is relatively weak, especially when the hole being processed is relatively deep, the overhang length of the boring bar will be relatively large ( When the elongation ratio L / D reaches 15), the cutting force can easily deform the boring bar without guide support. When the cutting force is uneven, the boring bar is prone to vibration, the quality and precision of the mac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B29/02
CPCB23B29/022B23B29/027B23B2229/04
Inventor 程寓徐玉高
Owner NANJING UNIV OF SCI & TECH
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