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Numerical control machine tool and its control system and method

A technology of numerical control machine tools and control methods, which is applied in general control systems, control/regulation systems, digital control, etc., and can solve problems such as inaccurate temperature measurement and inaccurate tool drive feed

Active Publication Date: 2022-07-08
SIEMENS AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention expects to propose an improved CNC machine tool and its control system, which does not need to measure the temperature of the spindle of the CNC machine tool through a sensor in the process of machining parts by the CNC machine tool, thereby avoiding inaccurate temperature measurement and advanced cutting tool drive due to abnormal sensors. The problem of imprecise dosing
Effectively avoid the problem of inaccurate tool drive feed caused by inaccurate sensor temperature measurement

Method used

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  • Numerical control machine tool and its control system and method
  • Numerical control machine tool and its control system and method
  • Numerical control machine tool and its control system and method

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Embodiment Construction

[0024] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0025] like figure 1 shown, it shows a schematic diagram of a control system 100 for a CNC machine tool according to one embodiment of the present invention. The CNC machine tool includes a machine tool controller 101, such as a programmable logic controller (PLC), a tool for cutting the workpiece to be machined, a spindle connected to the tool, and a drive motor built into the spindle, the The main shaft is driven by the motor to complete th...

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Abstract

The invention provides a control method realized by an industrial host of a CNC machine tool, the CNC machine tool further includes a machine tool controller, a tool for cutting workpieces and a spindle connected with the tool, the spindle has a built-in motor, and the control method The method includes: obtaining at least one working parameter of the numerically controlled machine tool from the machine tool controller; determining the temperature distribution information of the main shaft according to the obtained at least one working parameter; calculating the temperature distribution information of the main shaft according to the determined temperature distribution information of the main shaft The deformation amount of the main shaft; sending a control command to the machine tool controller to control the machine tool controller to adjust the driving feed amount of the tool according to the calculated deformation amount of the main shaft. The invention analyzes the deformation of the main shaft by adopting the finite element model of the simulated main shaft, thereby improving the accuracy of calculation.

Description

Background technique [0001] With the development of CNC machine tool (Computer Numerical Control, CNC) technology, CNC machine tools can process more and more precise parts. The precision of such precision components obviously puts forward higher requirements for the error control of the tool drive feed, and the spindle deformation caused by the heating of the CNC machine tool spindle during the machining process is an important factor that causes the tool feed error. Therefore, in CNC machine tools, it is usually necessary to eliminate the influence of the spindle deformation on the drive feed of the tool. [0002] In the traditional technology, sensors are usually used to actually detect the heating degree of the spindle of the CNC machine tool. Usually these sensors are installed on the CNC machine tool to detect the temperature of the spindle from the outside of the spindle, or the spindle manufacturer directly embeds the temperature sensor in the spindle. The industrial ...

Claims

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Application Information

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IPC IPC(8): G05B19/19
CPCG05B19/19G05B2219/37431G05B2219/45136G05B19/404G05B2219/49169G05B2219/49206G05B2219/49219
Inventor 佘丰客任超
Owner SIEMENS AG
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