Track smoothing method and device of operation equipment in numerical control system, and numerical control machine tool

A technology for operating equipment and trajectory smoothing, applied in the field of trajectory smoothing methods and devices and CNC machine tools, can solve the problems of severe vibration and poor smooth performance of machine tools, and achieve the effects of improving smooth performance and avoiding machine impact and violent vibration.

Active Publication Date: 2012-09-19
BEIJING A&E TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the technical problems in the prior art that the machine tool produces severe vibration and poor stability performance due to the inability to achieve conti

Method used

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  • Track smoothing method and device of operation equipment in numerical control system, and numerical control machine tool
  • Track smoothing method and device of operation equipment in numerical control system, and numerical control machine tool
  • Track smoothing method and device of operation equipment in numerical control system, and numerical control machine tool

Examples

Experimental program
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Example Embodiment

[0035] Example one, please refer to figure 1 The method for smoothing the trajectory of the operating device in the numerical control system provided by the embodiment of the present invention includes:

[0036] In step S100, S-shaped speed planning is performed on the first processing track and the second processing track respectively.

[0037] In step S100, the operating device is the hardware execution unit of the numerical control system, including numerical control cutting heads, numerical control laser welding heads, numerical control operating platforms, robot arms and other components that can be controlled by software programs; the first processing track and the second The processing trajectory is the expected processing path of the operating device. For example, the combination mode between the first processing trajectory and the second processing trajectory may include any one of a straight line and a straight line, a straight line and a curve, and a curve and a curve. I...

Example Embodiment

[0046] Example two, please refer to figure 2 The method for smoothing the trajectory of the operating device in the numerical control system provided by the embodiment of the present invention includes:

[0047] In step S100', S-shaped speed planning is performed on the first processing track and the second processing track respectively.

[0048] In step S100', the operating device is a hardware execution unit in the numerical control system, including numerical control cutting heads, numerical control laser welding heads, numerical control operating platforms, robot arms and other components that can be controlled by software programs; the first processing track and the second The second processing track is the expected processing path of the operating device. For example, the combination mode between the first processing track and the second processing track may include any one of a straight line and a straight line, a straight line and a curve, and a curve and a curve. In this ...

Example Embodiment

[0063] Example three, please refer to image 3 ,Yes figure 1 or figure 2 The first exemplary flow chart of the trajectory smoothing method is shown. In this embodiment, the steps of the trajectory smoothing method of the operating device in the numerical control system will not be repeated. The difference of the S-type speed planning in this embodiment is that it includes:

[0064] Step S200: Obtain the sum S of the current acceleration path and the deceleration path length and the path length L determined by the current designated speed v of the operating device on the first processing track and / or the second processing track.

[0065] Step S201: Determine whether the track length L is less than the sum S of the current acceleration path and the deceleration path. If yes, execute step S202; if not, execute step S203; the number of executions+1.

[0066] Step S202: Decrease the current designated speed v, and execute step S204.

[0067] Step S203, increase the current designated speed...

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Abstract

The invention discloses a track smoothing method and a device of operation equipment in a numerical control system, and a numerical control machine tool. The method comprises the following steps of: respectively performing S-type velocity planning on a first processing track and a second processing track; pre-calculating corresponding velocity and position of a sliding track on a starting point and an end point of the first processing track and the second processing track according to a preset sliding ratio; acquiring a track length L and a maximum velocity Vm of the first processing track and the second processing track subjected to the S-type velocity planning; and regulating the velocity and position of the starting point and the end point of the sliding track according to the track length L and a maximum velocity Vm of the first processing track and the second processing track. By the track smoothing method and device of the operation equipment in the numerical control system, the S-type velocity planning is performed on the processing track, so that the smooth transition in continuous velocity can be realized between the sliding track and the processing track; the stability performance of the machine tool is effectively improved; and the impacting and violent vibration phenomena of the machine tool are avoided.

Description

technical field [0001] The invention relates to the field of numerical control systems, in particular to a method and device for smoothing the trajectory of operating equipment in the numerical control system and a numerical control machine tool. Background technique [0002] In the field of automation control, CNC machine tools, industrial robots and other equipment strive for high speed and high precision to improve processing quality and processing efficiency. When the corners of the parts connected between adjacent processing tracks are relatively large, it will cause excessive changes in the motion velocity vector, which will easily cause a large impact on the machine tool. Although the method of zero speed can be used to pass the corner, the method of passing the corner at zero speed will seriously affect the processing efficiency. [0003] In the prior art, the method of adding a small arc-shaped sliding trajectory between the processing trajectories is generally use...

Claims

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Application Information

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IPC IPC(8): G05B19/19
Inventor 苏晓芸
Owner BEIJING A&E TECH
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