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Large-arc ruled surface numerical control machining cutter path planning method

A technology for machining tools and trajectory planning, applied in the direction of program control, computer control, general control system, etc., can solve problems such as five-axis machining, achieve high surface quality, improve machining quality, and overcome low cutting efficiency

Active Publication Date: 2014-11-12
BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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Problems solved by technology

[0003] In view of the above problems, the present invention provides a method for planning the tool trajectory of large circular arc ruled surface numerically controlled machining, which can calculate the five-axis tool axis vector and tool position point, and solve the five-axis problem of large circular arc ruled surface. processing problem

Method used

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  • Large-arc ruled surface numerical control machining cutter path planning method
  • Large-arc ruled surface numerical control machining cutter path planning method
  • Large-arc ruled surface numerical control machining cutter path planning method

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specific Embodiment

[0021] Such as figure 1 As shown, the large arc ruled surface guide rail tool trajectory planning and processing method described in this embodiment is realized according to the following steps:

[0022] Step 1. Establishment of the computer-aided manufacturing model of large arc curved surface guide rail parts: the CAM software reads the section arc data in the guide rail design drawing, and calculates the large arc ruled surface by stretching the arc section. The CAM model of the guide rail; in the process of CNC machining, in addition to meeting the shape requirements of the design model, the establishment of the CAM model should also fully consider the process data in the process. The size value is generally calculated according to the median value in the design. The direction of should be as close as possible to the actual processing direction. When creating a ruled surface, the modeling tolerance is generally greater than the calculation tolerance of the interpolation p...

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Abstract

The invention provides a large-arc ruled surface numerical control machining cutter path planning method. The large-arc ruled surface numerical control machining cutter path planning method comprises the following steps of: establishing an auxiliary manufacturing model of a large-arc ruled surface part computer; calculating a cutter-axis vector; calculating a cutter point; and planning a numerical control machining cutter path, wherein the calculation formulas of the cutter-axis vector and the cutter point are given. A face milling cutter is used for rough machining, a forming cutter is used for finish machining, the problems that the interpolation method has low machining and cutting efficiencies and the cutting surface is low in quality are solved, and the surface precision and machining efficiency of the large-arc ruled surface machining are improved.

Description

technical field [0001] The invention relates to a method for planning the trajectory of a numerically controlled machining tool, in particular to a method for planning the trajectory of a numerically controlled machining tool for a large arc ruled surface. Background technique [0002] Large-arc ruled surface is a relatively common surface type in CNC machining, but it is a technical problem that has been explored in the field of mechanical processing to complete the processing of large-arc ruled surface with high efficiency and high quality. The traditional large arc ruled surface processing usually adopts the processing method of small arc approximation. This method uses the radius of the ball head of the ball cutter to cut the arc surface. In this cutting method, the linear speed of the center of the ball-end cutter is zero, and the cutting quality is poor; and the processing step of the ruled surface depends on the radius of the ball cutter. Due to the small cutting ste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/4097
Inventor 曹彦生黄景雨李贺栋
Owner BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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