Abstract
In this study, we put forward an Acc/Dec control algorithm based on trapezoid-curve jerk in order to avoid step change in jerk curve. Moreover, the motion profile smooth control approach based on continuous jerk is developed in details to decrease machine tools impact according to various kinematics constraint conditions, such as the maximum acceleration, the maximum jerk, the machining program segment displacement, the instruction feed rate and so on; Finally, the developed Acc/Dec approach and the traditional linear Acc/Dec approach are compared in the CNC experimental table. The results reveal that the developed approach can achieve more smooth and flexible motion profile, which is helpful to minish machine tools impact and enhance parts machining surface quality.
Highlights
It is important to ensure smooth movement and reduce machine tools impact in high precision CNC machining
In order to achieve high precision CNC machining, an Acc/Dec approach based on trapezoidcurve jerk is put forward in the study firstly; Secondly, the motion profile smooth control algorithm based on continuous jerk is developed in details to decrease machine tools impact according to various kinematics constraint conditions
This study proposes the acceleration/deceleration control algorithm based on trapezoid-curve jerk in CNC machining
Summary
It is important to ensure smooth movement and reduce machine tools impact in high precision CNC machining. In order to achieve high precision CNC machining, an Acc/Dec approach based on trapezoidcurve jerk is put forward in the study firstly; Secondly, the motion profile smooth control algorithm based on continuous jerk is developed in details to decrease machine tools impact according to various kinematics constraint conditions.
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