Numerically-controlled machine tool spindle rotation acceleration power and energy consumption obtaining and energy-saving control method

Abstract

The invention discloses a numerically-controlled machine tool spindle rotation acceleration power and energy consumption obtaining and energy-saving control method. The method comprises the following steps: step 1) controlling a spindle to rotate and obtaining a spindle rotation power equation PSR (n), wherein the n is spindle rotation speed; step 2) obtaining design parameters, obtaining a computation formula of the spindle rotation acceleration power according to the spindle rotation power equation and the design parameters, and further obtaining a computation formula of the energy consumption; step 3) changing acceleration time of a spindle frequency converter and carrying out calculating to obtain spindle rotation acceleration power peak value and energy consumption; and step 4) selecting appropriate acceleration time of the spindle frequency converter to control the spindle so as to enable the spindle rotation acceleration power peak value is less than the preset upper limit value and the energy consumption is minimum. The power and energy consumption in the numerically-controlled machine tool spindle rotation acceleration process can be obtained only through carrying out a simple spindle rotation experiment and then with theoretical analysis and machine tool design and manufacture parameters being combined, and thus energy-saving control of the machine tool can be achieved.

Description

Technical field [0001] The invention relates to the field of machine tool control, and in particular to a method for acquiring and energy-saving control method for power consumption of spindle rotation acceleration of a numerical control machine tool. Background technique [0002] Spindle acceleration is the movement process of the spindle starting from a standstill or accelerating from a lower speed to a higher speed. At present, the main drive system of CNC machine tools usually adopts the drive mode of "frequency converter + asynchronous motor + mechanical transmission", which realizes stepless speed regulation of the spindle by changing the output frequency of the frequency converter. The spindle rotation and acceleration process has a large power and consumes a lot of energy in a short time. This part of the energy is not directly used to remove the workpiece material, which is an ineffective energy waste. Therefore, there is an urgent need to study the method of obtaining...

AI Technical Summary

Problems solved by technology

The disadvantage of this invention is that all coefficients in the model are obtained through experiments, and the experiments and data analysis are complex, time-consuming and laborious; and the given model does not reflect the relationship between machine tool design parameters and energy consumption, and cannot be used to guide machine tool energy-saving control

[0004] To sum up, the current patents mainly focus on the power acquisition and monitoring of the main drive system of the machine tool running at a constant speed, and there are few researches on the power of the main drive system when the speed changes

Images