Shaft-type part multi-arc chamfer designing method

A technology of shaft parts and design method, applied in the field of multi-arc chamfering design of shaft parts

Inactive Publication Date: 2014-09-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

These two schemes have obvious effects and have been widely promoted and used in the 20th and 21st centuries. However, in today's increasingly innovative engineering technolog

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  • Shaft-type part multi-arc chamfer designing method
  • Shaft-type part multi-arc chamfer designing method
  • Shaft-type part multi-arc chamfer designing method

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[0026] The present invention will be further described below with reference to the drawings and embodiments.

[0027] Please refer to figure 1 with figure 2 As shown, the multi-arc chamfer design method for shaft parts of the present invention includes the following steps:

[0028] Step 1). Provide shaft parts and use 3D drawing software to perform 3D CAD modeling of shaft parts. The shaft parts include the small diameter section on the left and the large diameter section on the right, including the small diameter section and the large diameter section The connection point is the shaft step;

[0029] Step 2). Carry out multi-arc parametric modeling at the two vertical sides of the shaft steps of the small diameter section and the large diameter section. There are n arcs, and the arc radius is from R 1 To R n Gradually become larger, the smallest arc R 1 And the large diameter segment edge of shaft parts ( figure 2 The middle vertical side y axis) is tangent, the largest arc R n W...

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Abstract

The invention provides a shaft-type part multi-arc chamfer designing method. The method comprises the steps that (1) a shaft-type part is provided, and three-dimensional drawing software is used for conducting three-dimensional CAD modeling on the shaft-type part; (2) multi-arc parametric modeling is conducted at the positions of two perpendicular edges at the shaft step position of a small-diameter section and the shaft step position of a large-diameter section. When the multi-arc chamfer designing method is applied to step chamfer structural design of a general industrial shaft-type part, the stress level at the position of a step chamfer of the shaft-type part is lowered; the service life of the shaft-type part is prolonged; the service efficiency of materials of the shaft-type part is improved.

Description

Technical field: [0001] The invention relates to a multi-arc chamfering design method for shaft parts, and mainly relates to a step chamfering design method for general industrial shaft parts. Background technique: [0002] Shaft parts are widely used in various industries in the machinery industry, including aerospace, shipbuilding, automobiles, machining and other national economic pillar industries. In general, shaft parts in practical applications will have steps, and the steps are often the stress-risk parts of shaft parts. In the 19th century, in order to solve the stress concentration at the shaft step and increase the service life of shaft parts, engineers designed two solutions for the step, single-arc rounding and chamfering. These two schemes have obvious effects and have been widely promoted and used in the 20th and 21st centuries. However, in today's increasingly innovative engineering technology, how to more effectively reduce the stress level at the chamfer o...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 崔海涛黄嵩徐倩
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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