Method for calculating energy consumption of numerical control machine tool in cutting stage

A CNC machine tool and cutting specific energy technology, which is applied to metal processing machinery parts, measuring/indicating equipment, metal processing equipment, etc., can solve the problem of not considering the impact of tool wear on the energy consumption of CNC machine tools, and not considering the no-load of the CNC machine tool spindle Energy consumption and other issues, to achieve the effect of high calculation accuracy and simple calculation method

Active Publication Date: 2018-10-19
SHANDONG UNIV OF TECH
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Problems solved by technology

This empirical model does not consider the no-load energy consumption of the spindle of the CNC machin

Method used

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  • Method for calculating energy consumption of numerical control machine tool in cutting stage
  • Method for calculating energy consumption of numerical control machine tool in cutting stage
  • Method for calculating energy consumption of numerical control machine tool in cutting stage

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[0025] Combine below figure 1 figure 2 The present invention is further described in detail.

[0026] In step 1), according to the relationship between CNC machine tool cutting parameters and energy consumption, and considering the impact of tool wear on machine tool energy consumption, a calculation model of CNC machine tool cutting specific energy is established:

[0027] Sec=k 0 *(1+VB)+k 1 *n / MRR+k 2 / MRR (5)

[0028] Among them, Sec is the cutting specific energy of CNC machine tool; VB is the amount of tool wear; n is the spindle speed of CNC machine tool; MRR is the material removal rate; k 0 、k 1 and k 2 is the undetermined coefficient.

[0029] In step 2), measure and calculate the undetermined coefficients in the cutting specific energy calculation model of the CNC machine tool with the help of a power analyzer. After the tool material, workpiece material, and processing method are determined, the CNC cutting experiment is carried out:

[0030] For each cut...

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Abstract

The invention provides a method for calculating energy consumption of a numerical control machine tool in a cutting stage. The method comprises the following steps that (1) a numerical control machinetool cutting specific energy calculation model is established according to the relationship between cutting parameters and energy consumption of the numerical control machine tool and considering theinfluence of tool abrasion on the energy consumption of the machine tool; (2) a numerical control cutting experiment is carried out, and various undetermined coefficients in the numerical control machine tool cutting specific energy calculation model are measured and calculated by means of a power analyzer; and (3) for a new set of process parameters, firstly the numerical control machine tool cutting specific energy is calculated by using the numerical control machine tool cutting specific energy calculation model obtained in the step (1) and the step (2) according to cutting parameters andtool abrasion under the condition that cutter materials, workpiece materials and machining methods are same, and then the energy consumption of the numerical control machine tool in the cutting stageis calculated according to removing material volume. The method has the advantages that the influence of no-load energy consumption of a main shaft of the numerical control machine tool and tool abrasion loss is comprehensively considered to calculate the energy consumption of the numerical control machine tool in the cutting stage, the calculation method is simple and the calculation precision ishigh.

Description

technical field [0001] The invention relates to a method for calculating the energy consumption of a numerically controlled machine tool, in particular to a method for calculating the energy consumption of a numerically controlled machine tool in the cutting stage. Background technique [0002] The global energy crisis and climate warming are becoming increasingly severe. CNC machine tools have powerful functions and many energy-consuming components, mainly including spindle servo drive system, feed axis servo drive system, cooling and lubrication system, CNC device and PLC part, as well as auxiliary systems such as lighting device, fan, chip removal system, tool change device, etc. . Calculation of energy consumption of CNC machine tools based on machine components is very complex. [0003] The working process of CNC machine tools can be divided into cutting stage and non-cutting stage. The energy consumption of CNC machine tools in the cutting stage only refers to the e...

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Application Information

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IPC IPC(8): B23Q17/00
CPCB23Q17/00
Inventor 赵国勇赵玉刚张丽丽张军锋田英周
Owner SHANDONG UNIV OF TECH
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