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A clamping structure for turning thin-walled long pipe fittings with nonlinear change of inner and outer diameters

A non-linear change, inner and outer diameter technology, applied in the direction of metal processing equipment, metal processing machinery parts, clamping, etc., can solve the problem of deformation of clamping thin-walled products, and achieve the effect of avoiding jamming and stable and controllable adjustment

Active Publication Date: 2020-12-25
JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the non-linear change of the inner and outer diameter structure dimensions, there is always a gap between the positioning surfaces, which will cause partial deformation when clamping thin-walled products

Method used

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  • A clamping structure for turning thin-walled long pipe fittings with nonlinear change of inner and outer diameters
  • A clamping structure for turning thin-walled long pipe fittings with nonlinear change of inner and outer diameters
  • A clamping structure for turning thin-walled long pipe fittings with nonlinear change of inner and outer diameters

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Experimental program
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Embodiment Construction

[0026] The present invention will be further described in detail below through specific embodiments.

[0027] A clamping structure for turning a thin-walled long pipe with a nonlinear change in inner and outer diameter, the structure includes a locking nut 1, an expansion sleeve 2, a plunger 3, a steel ball 4, a sector plate 5, a butterfly spring 6, a screw 7, Wedge rod 8, locking nut two 9, shaft 10, hexagon socket set screw 11;

[0028] The expansion sleeve 2 is a cylindrical structure, and the inner wall of the cylinder of the circular truncated hole part of the expansion sleeve 2 is provided with a groove;

[0029] The shaft 10 includes a cylindrical body 1 with an external thread, a circular truncated body with an axial through hole, a cylindrical body 2, and a limiting block structure that are coaxially connected in sequence; the outer diameter of the cylindrical body 1 is smaller than that of the cylindrical body 2. The taper of the circular truncated body matches the ...

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Abstract

The invention relates to a turning and clamping structure for a thin-walled long pipe fitting with non-linear variation of inner and outer diameters, and belongs to the technical field of aviation manufacturing. The turning and clamping structure comprises a lock nut (1), an expansion sleeve (2), a plunger (3), a steel ball (4), a sector plate (5), a belleville spring (6), a screw (7), a wedge rod(8), a lock nut (9), a main shaft (10) and a hexagon socket set screw (11). Inner hole positioning and fixing are achieved by adjusting the fitting degree of the sector plate (5) and the inner curvedsurface of the machined thin-walled long pipe fitting with non-linear variation of the inner and outer diameters. By means of the structure, the machining efficiency of the thin-walled long pipe fitting with non-linear variation of the inner and outer diameters is improved, nonlinear curved surface machining with the extremely weak rigidity is converted into machining with good structural rigidity, deformation in part deformation can be effectively reduced, the whole machining technological process is simplified, and machining quality is improved.

Description

technical field [0001] The invention relates to a clamping structure for turning a thin-walled long pipe with nonlinear variation of inner and outer diameters, which belongs to the technical field of aviation manufacturing. [0002] technical background [0003] In the existing processing of thin-walled pipe fittings with inner holes for positioning and clamping, a number of mandrels are generally adapted to realize the positioning of the product. This method is suitable for processing cylindrical surfaces that do not require high positional accuracy. However, when the size of the inner circle positioning surface changes non-linearly, especially when the inner and outer diameter structures change non-linearly, the method of adapting the mandrel is no longer suitable. Due to the non-linear change of the inner and outer diameter structures, there is always a gap between the positioning surfaces, which will cause partial deformation when clamping thin-walled products. For a cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/06
CPCB23Q3/064
Inventor 谭茂林李向阳李富长戴延丰
Owner JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA