Corner smooth transition method based on track mode

A smooth transition and corner technology, applied in the direction of instruments, digital control, control/regulation systems, etc., to achieve the effects of improving efficiency, avoiding incentives, and improving processing efficiency and precision

Active Publication Date: 2020-11-10
淮安欧特科技有限公司
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  • Description
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  • 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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  • Corner smooth transition method based on track mode
  • Corner smooth transition method based on track mode
  • Corner smooth transition method based on track 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 track mode, which belongs to the technical field of numerical control processing and comprises the following steps of: constructinga track mode only containing three low harmonic components by utilizing a trigonometric function; initializing parameters; establishing equation constraint conditions related to boundary limitation,inequality constraint conditions related to motion contour limitation and a target function related to contour error limitation on a coordinate axis, and calculating trajectory parameters through linear programming and substituting thetrajectory parameters into a trajectory mode to obtain an axis motion trajectory; and adjusting the axis motion trails, and synthesizing the axis motion trails to obtain a corner transition curve. According to the method, a trajectory mode is utilized, corner transition curve construction and axial velocity planning are completed at the same time, the smoothing efficiency is effectively improved, and mechanical structure resonance is avoided; the shaft motion trail is smooth and only comprises three low-frequency components, the high-frequency components contained in the driving force / torque can be remarkably reduced, excitation to the vibration mode of the system is avoided, and high-speed and high-quality machining is achieved.

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 Applications(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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