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Pneumatic support device for steady operation of overlong boring cutter bar

A pneumatic support and stable work technology, applied in the field of mechanical processing, can solve the problems of decreased precision, tool cracking, and poor rigidity of long tool holders, etc., and achieve the effect of low cost, simple structure and reliable operation

Active Publication Date: 2010-02-03
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings existing in the prior art due to the poor rigidity of the long tool bar, deformation and chatter easily occur during processing, resulting in a large drop in precision, tool cracking, and failure to meet the processing requirements. Pneumatic support device for stable work of the tool holder

Method used

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  • Pneumatic support device for steady operation of overlong boring cutter bar
  • Pneumatic support device for steady operation of overlong boring cutter bar

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Embodiment Construction

[0013] This embodiment is a pneumatic support device for the stable operation of an ultra-long boring bar, including a cylinder support 3 , a pressure regulating / stabilizing unit 4 , a switch 5 , a roller 6 , a cylinder 7 and an air pipe 8 . in:

[0014] Cylinder support 3 is made of 5 millimeters thick carbon steel plate, comprises two support plates 10 and a base plate 9. The bottom plate 9 is a circular plate with the same diameter as the outer diameter of the boring bar. The support plates 10 are two rectangular plates with the same structure. The external dimensions of the support plates 10 must meet the needs of installing the cylinder 7, and the support plates do not interfere with the bottom hole of the workpiece; there are cylinders at the ends of the two support plates 10. Mounting holes; the other ends of the two support plates 10 are fixed on the base plate, and are perpendicular to the surface of the base plate 9; the two support plates 10 are located on the cent...

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Abstract

The invention provides a pneumatic support device for steady operation of an overlong boring cutter bar. In the device, two support plates of a cylinder support (3) are fixed on a base plate, and thedistance between the two support plates meet the mounting requirements of a cylinder (7); a connecting line between cylinder mounting holes on the two support plates and the central line of the base plate form an included angle alpha; and the degree of the included angle alpha is consistent with the direction of resultant cutting force. Two ends of the cylinder (7) are fixed on the cylinder support (3); and the cylinder support is fixed on an end face of a boring cutter bar (1); the boring cutter bar (1) is provided with an air tube mounting groove, one end of an air tube (8) is communicated with the cylinder, and the other end thereof is communicated with a pressure regulating / stabilizing unit (4) and an air tube switch (5). A piston rod of the cylinder extends to prop on the inner wall of a bottom hole and support the boring cutter bar when compressed air enters the cylinder. The pneumatic support device solves the problems of cutter relieving and vibration due to insufficient cutterbar rigidity in precision boring of hole parts with large length-diameter ratio, is applicable to boring of holes with large length-diameter ratio, and has the advantageous of simple structure, convenient operation, reliable operation, low cost and no pollution.

Description

1. Technical field [0001] The invention relates to the field of mechanical processing, in particular to a pneumatic support device for the stable operation of an ultra-long boring bar. 2. Background technology [0002] The precision boring of the hole boring of parts with large length-to-diameter ratio has been a difficult problem in machining for a long time. Due to the limitation of the size of the large aspect ratio hole, the tool holder for boring can only be made into a slender structure, so the rigidity of the tool holder is poor. Due to the cutting force during processing, the cutter holder is deformed and the chatter causes a large drop in accuracy. The tool breaks and cannot meet the processing requirements, and sometimes it cannot even be processed. 3. Contents of the invention [0003] In order to overcome the shortcomings existing in the prior art due to the poor rigidity of the long tool bar, deformation and chatter easily occur during processing, resulting i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/00B23B47/00
Inventor 吴航义李文李立武
Owner AECC AVIATION POWER CO LTD
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