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Desgin and Realization of Reliability Test-bed for CNC Lathe Turret Tool

Author: LuJianWei
Tutor: YangZhaoJun
School: Jilin University
Course: Mechanical Manufacturing and Automation
Keywords: CNC lathe Test Bench Develop PLC Turret
CLC: TG519.1
Type: Master's thesis
Year: 2011
Downloads: 209
Quote: 1
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Abstract


CNC machine tools the national strategic manufacturing equipment, manufacturing and technical level is a direct reflection of a country's level of industrial modernization. The turret tool CNC lathe features, its direct impact on the level of reliability to the level of reliability of the machine, turret tool reliability of in-depth research to improve machine reliability has important significance. The development of the turret tool reliability test rig some domestic enterprises only from a functional point of view, the only indexable test, will be the role of dynamic cutting force due to the turret tool in the work, so a separate translocation test state simulation of the turret actual work is not good, the test result is not satisfactory. In this paper, the major projects of the National Science and Technology - reliability design of high-speed precision CNC machine tools and performance test technology (Project No.: 2009ZX04014-011), the actual working conditions of the turret as a starting point, dynamic loading links into the test process, developed CNC lathe turret tool reliability test, turret tool accelerated testing to improve test efficiency, for turret tool reliability study provide the basis, the main contents include: (1) According to the turret The working principle and the actual work force status, the reference of turret national standards and the proposed translocation test and dynamic load test of turret test methods. The functional requirements of the test rig and the overall design of the test rig, the test stand is divided into test bench, electro-hydraulic servo loading system, the lower PLC control system and PC monitoring system. (2) In accordance with the test requirements, test bench structure design and manufacturing, multi-angle turret transform load. Finite element analysis with ANSYS to Taiwan rack to identify weaknesses in the stiffness of the bench, improved weaknesses. Electro-hydraulic servo loading system design, and parameter calculation and selection of the key components of the hydraulic system. (3) as the core of the lower control system with OMRON PLC PLC selection according to the test station control requirements, I / O address edit and lower control system control flow analysis, to finalize the establishment of control procedures to achieve a on the turret and associated electrical control. (4) PC monitoring system development software used Visual Basic, and the preparation of the man-machine interface, based on the the MSComm control communication function communication with the PLC program, and to complete the preparation of the overall control program for the entire test rig last Access the trial database development, test and fault information database. After a period of trial detection after the completion of the test rig debugging, test results showed that: the test stand features standard, stable operation, acceptance, while access to the part of the test data, and also found some fault of the turret and failure Analysis and Troubleshooting. CNC lathe turret tool reliability test rig developed the reliability of the key features of the CNC lathe turret depth study has important theoretical significance and practical value.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Turning and lathe ( lathe ) > Program control lathes and CNC lathes
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