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A performance testing method and device for a digital twin model of a machine tool

A test device and digital technology, applied in the direction of measuring/indicating equipment, metal processing machinery parts, metal processing equipment, etc., can solve problems such as performance degradation accelerated life test and life prediction that cannot be digital twin models

Active Publication Date: 2021-03-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, CNC machine tools are high-precision equipment and have a long service life, which cannot fully support the performance attenuation experimental verification of its digital twin model, accelerated life test and life prediction.

Method used

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  • A performance testing method and device for a digital twin model of a machine tool
  • A performance testing method and device for a digital twin model of a machine tool
  • A performance testing method and device for a digital twin model of a machine tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A machine tool digital twin model performance testing device, such as Figure 1~3 As shown, it includes machine base 1, workbench a 10-1, workbench b 10-2, gantry frame 11 and control system 33. The gantry frame 11 is fixed on the machine base 1, and the upper surface of the machine base 1 is provided with two The guide rail installation platform 2 is fixed with a screw bearing seat 3 between the two guide rail installation platforms 2, and a lead screw 8 is installed on the lead screw bearing seat 3, and one end of the lead screw 8 is connected with a servo motor 6 through a coupling 4, and the servo The motor 6 is fixed on the frame 1;

[0055] The upper surface of each guide rail installation platform 2 is equipped with a linear guide rail 7, and the two linear guide rails 7 are provided with guide rail sliders 9 matched with it, and the two guide rail sliders 9 are fixedly connected with the workbench a 10-1 The lead screw 8 is provided with a nut seat 32, the nut ...

Embodiment 2

[0064]A machine tool digital twin model performance testing device, its structure is as shown in embodiment 1, the difference is that the grating ruler displacement sensor includes a reading head 28-2 and a grating ruler main ruler 28-1, and the workbench a 10-1 The side door is provided with an L-shaped patch 30, the grating ruler main ruler 28-1 is installed on the L-shaped patch 30, the upper surface of the base 1 is fixed with an L-shaped bracket 29, and the reading head 28-2 is fixed on the L-shaped bracket 29 , and cooperate with the grating ruler main scale 28-1. The grating ruler displacement sensor is composed of two parts: the grating ruler main ruler 28-1 and the reading head 28-2. The grating ruler main ruler 28-1 is generally fixed on the movable parts of the machine tool, and the reading head 28-2 is installed on the fixed parts of the machine tool. An indicator light grid is incorporated in the readhead. The grating ruler displacement sensor is a measurement fe...

Embodiment 3

[0066] A machine tool digital twin model performance testing device, the structure of which is shown in Embodiment 1, the difference is that the X-direction servo loading mechanism includes an X-direction electric cylinder 17, an X-direction electric cylinder mounting seat 15, and an X-direction force wheel installation The bracket 13 and the X-direction force wheel 12, the X-direction electric cylinder 17 mounting seat bolts are connected on the side of the gantry 11, the X-direction electric cylinder 17 is installed on the X-direction electric cylinder mounting seat 15, and the X-direction electric cylinder 17 cylinder The end of the rod passes through the through hole on the X-direction electric cylinder mounting seat 15 and is connected to one end of the first tension pressure sensor 14, and the other end of the first tension pressure sensor 14 is connected to the X-direction force-applying wheel mounting bracket 13, and the X-direction force is applied The wheel 12 is inst...

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Abstract

The invention relates to a machine tool digital twin model performance test method and device, and belongs to the field of device intellectualization and digitization. The machine tool digital twin model performance test device comprises a machine base, a work table a, a work table b, a portal frame and a control system. A grating ruler displacement sensor is arranged between the machine base andthe work table a. An X-direction servo loading mechanism and a Z-direction servo loading mechanism are arranged on the portal frame. A Y-direction servo loading mechanism is arranged on the machine base. The X-direction servo loading mechanism, the Z-direction servo loading mechanism and the Y-direction servo loading mechanism are internally provided with tension and pressure sensors correspondingly. Three-direction vibration acceleration sensors are arranged on a lead screw bearing pedestal, a nut base and guide rail slide blocks correspondingly. A servo motor and all the sensors are connected with the control system. According to the machine tool digital twin model performance test method and device, the machine tool true machining process is simulated through the loading mechanisms, required reliability data are collected through all the sensors, and platform support is provided for digital twin model performance degradation renewing experimental verification of damageable parts andaccelerated life attenuation and life prediction of precise parts.

Description

technical field [0001] The invention relates to a performance testing method and device of a digital twin model of a machine tool, belonging to the technical field of equipment intelligence and digitization. Background technique [0002] In recent years, with the development of CPS (Cyber-Physical Systems) technology, Digital Twin (Digital Twin) technology has gradually become a research hotspot in the academic circles. By constructing a twin body of physical space equipment in digital space, physical space and digital space virtual and real symbiosis , realizing the comprehensive, real, objective and real-time mapping of the digital world to the physical world. [0003] Machine tool is the mother machine of intelligent manufacturing and an important symbol to measure a country's intelligent manufacturing industry. The main function of the digital twin model of CNC machine tools is to describe the geometric, electrical and physical characteristics of the equipment, and it i...

Claims

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Application Information

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IPC IPC(8): B23Q17/09B23Q17/10B23Q17/12
Inventor 胡天亮孙雨彤巩超光李学兵高宇杰陶飞
Owner SHANDONG UNIV
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