Reliability test device and reliability test method for numerical control machine hydraulic system

A technology of hydraulic system and test device, which is applied in the test of fluid pressure actuation system, fluid pressure actuation device, mechanical equipment, etc., can solve the problem of lack of reliability test device and reliability test method.

Active Publication Date: 2015-05-06
吉林大学重庆研究院
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem that the current domestic CNC machine tool hydraulic system ha

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  • Reliability test device and reliability test method for numerical control machine hydraulic system
  • Reliability test device and reliability test method for numerical control machine hydraulic system
  • Reliability test device and reliability test method for numerical control machine hydraulic system

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Embodiment Construction

[0068] The present invention is described in detail below in conjunction with accompanying drawing:

[0069] Practice has proved that the frequent failure parts of the hydraulic system of CNC machine tools are oil pipes and hydraulic components. The typical failure modes are: oil leakage, blockage, and insufficient output pressure. Conduct reliability screening or improvement. According to the requirements of the reliability test, it is necessary to simulate the real working conditions of the hydraulic system as much as possible. At the same time, due to the long time of the reliability test, manual methods cannot be used for test observation, so the test device is required to be able to run automatically, automatically detect faults and alarm . The hydraulic system of CNC machine tools often has more than one branch, but when testing, it can only be tested in a single way, and there must be no influence between the branches. It meets the reliability test of multi-branch hyd...

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Abstract

The invention discloses a reliability test device and a reliability test method for a numerical control machine hydraulic system, and aims to solve the problem that the numerical control machine hydraulic system is free of reliability test device and reliability test method. The reliability test device for the numerical control machine hydraulic system comprises a mounting part of a tested hydraulic system, an analog loading part and an automatic control part, wherein a first hydraulic cylinder branch circuit of a confluence plate of the mounting part of the tested hydraulic system is connected with a hydraulic cylinder rodless cavity oil pipe of the analog loading part, and a second hydraulic cylinder branch circuit of the confluence plate is connected with a hydraulic cylinder rod cavity oil pipe; a lower programmable logic controller (PLC) of the automatic control part is connected with a first three-position four-way electromagnetic reversing valve, a second three-position four-way electromagnetic reversing valve, a third three-position four-way electromagnetic reversing valve and a fourth three-position four-way electromagnetic reversing valve of the mounting part of the tested hydraulic system through electric wires; an A/D acquisition card of the automatic control part is connected with a pressure sensor and a pull pressure sensor through electric wires. The invention further provides a reliability test method for the tested hydraulic system.

Description

technical field [0001] The present invention relates to a test device and a reliability test method used in the field of reliability, more precisely, the present invention relates to a reliability test of a CNC machine tool hydraulic system capable of loading the hydraulic system of a CNC machine tool and performing a reliability test Device and test method. Background technique [0002] CNC machine tools are the basis for improving the national manufacturing level and equipment level, and are an important symbol to measure a country's industrial development level and comprehensive national strength. The statistical results of the past five years show that the domestic CNC machine tool market has a low share of domestic equipment, but the import volume remains high. The main reason is that the reliability of domestic CNC machine tools is not high, and the reliability problem has become a constraint for domestic CNC machine tools. One of the key bottlenecks in the developmen...

Claims

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Application Information

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IPC IPC(8): F15B19/00
CPCF15B19/00
Inventor 陈传海田海龙杨兆军陈菲李国发许彬彬贾玉辉杜雪娇毛艳王继利
Owner 吉林大学重庆研究院
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