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A Smooth Corner Transition Method Based on Trajectory Mode

A smooth transition and corner technology, applied in the direction of program control, instrument, electrical program control, etc., to achieve the effect of improving efficiency, improving processing efficiency and precision, and high-quality processing

Active Publication Date: 2021-11-09
淮安欧特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at present, whether it is the smoothness of the processing path or the flexible control ability of the drive shaft, it has reached the limit and it is difficult to continue to improve

Method used

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  • A Smooth Corner Transition Method Based on Trajectory Mode
  • A Smooth Corner Transition Method Based on Trajectory Mode
  • A Smooth Corner Transition Method Based on Trajectory Mode

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with the accompanying drawings.

[0058] The invention discloses a corner smooth transition method based on a trajectory mode. According to a given fundamental frequency, the trajectory mode is used to complete the corner transition curve construction and axis speed planning in one step, effectively improving the smoothing efficiency and avoiding Mechanical structure resonance; at the same time, since the generated shaft kinematics profile is very smooth and contains only three low-frequency components, it can significantly reduce the high-frequency components contained in the driving force / torque, avoid excitation of the system vibration mode, and achieve high-speed High quality processing.

[0059] Such as figure 1 As shown, the present invention proposes a corner smooth transition method based on trajectory mode, which solves the processing efficiency and accuracy problems of complex curves and sur...

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Abstract

The invention discloses a corner smooth transition method based on a trajectory mode, which belongs to the technical field of numerical control processing and comprises the following steps: using trigonometric functions to construct a trajectory mode containing only three low harmonic components; initializing parameters; On the above, establish the equality constraints on the boundary limit, the inequality constraints on the motion contour limit and the objective function on the contour error limit, use linear programming to calculate the trajectory parameters and substitute them into the trajectory mode to obtain the axis motion trajectory; adjust the axis motion trajectory, Synthesize the axis motion trajectory to obtain the corner transition curve. The invention utilizes the trajectory mode to complete the corner transition curve construction and shaft speed planning at the same time, effectively improving the efficiency of smoothing and avoiding mechanical structure resonance; the shaft motion trajectory is smooth and only contains three low-frequency components, which can significantly reduce the driving force / moment The high-frequency components contained in it avoid the excitation of the vibration mode of the system and realize high-speed and high-quality processing.

Description

technical field [0001] The invention belongs to the technical field of numerical control machining, and in particular relates to a method for smooth transition of corners based on a trajectory mode. Background technique [0002] In the early days, in order to solve the vibration problem of the machine tool caused by the frequent start and stop of the drive shaft, scholars calculated the maximum speed allowed to pass at the connection of continuous small line segments according to the constraints such as the acceleration and deceleration performance of the machine tool, load power, and contour error, and inserted a straight line segment Make a transition to realize the continuous processing of the NC program and effectively improve the processing efficiency. However, sudden changes in the direction of velocity at the joints can still cause vibrations in the machine tool. Therefore, some scholars continuously improve the smoothness of the junction between transition curves an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/416G05B19/19
CPCG05B19/19G05B19/416G05B2219/36171
Inventor 李浩王保升闫注文潘龙吕东升陆玄鸣
Owner 淮安欧特科技有限公司
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