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[CN 201911388547.2] A control method for stopping the top dead center of the slider of a mechanical press
[CN 201911388547.2] Title of a control method for stopping top dead center of a mechanical press slider: Application number of a control method for stopping top dead center of a mechanical press slider: CN 201911388547.2 Applicant: Nanjing Easton Automation Co., Ltd. Application date: 2019-12-30 Patent type: Application for the invention The present invention discloses a control method for stopping top dead center of a mechanical press slider. According to the movement characteristics of the slider of a mechanical press, the movement of the slider is divided into three stages: acceleration zone, constant speed zone and deceleration zone for research, and the constant speed zone of the slider is divided into multiple angle zones. By applying the position sensor outside the system and the time timer inside the system to the control algorithm of the slider stop top dead center at the same time, the relationship table between the running speed and running time of the slider is established for each angle zone, the method of the invention can ensure that the slider is accurately stopped in the range of the top dead center. At the same time, the redundant detection of the position sensor and the internal timer of the system can ensure that the movement of the slider is safe and controllable in each detection interval. Even if the position sensor fails, slips, breaks the shaft and other faults during the operation of the slider, the system can still control the clutch to disconnect in time through the time timer, prevent the danger of the second continuous collision of the slider, and ensure the safety of machine tools and personnel.
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