Rigidity measuring device for grinding carriage spindle of cylindrical grinding machine

Abstract

The invention relates to a rigidity measuring device for a grinding carriage spindle of a cylindrical grinding machine. The rigidity measuring device comprises an eddy current displacement sensor, a hydraulic cylinder driver, a force application rod, a hydraulic cylinder controller, a force sensor, a propelling rod and the like. The force application rod is arranged under the grinding carriage spindle, the propelling rod and the hydraulic cylinder driver are connected under the force application rod, the hydraulic driver is connected with a computer signal output end by the hydraulic cylinder controller; and the force sensor is arranged between the force application rod and the propelling rod, the eddy current displacement sensor is arranged on the grinding carriage spindle, the eddy current displacement sensor and the force sensor are respectively connected with an A / D collection card signal input end by an eddy current sensor signal processor and a force sensor signal processor, and an A / D collection card signal output end is connected with a computer signal input end. The device can conveniently measure the rigidity of different grinding carriage spindles, analyze dynamic characteristics of different grinding carriage spindles through comparison of experiment test results, and effectively provide grinding efficiency and grinding quality of a grinding workpiece.

Description

technical field [0001] The invention relates to a device for measuring the stiffness of the main shaft of a machine tool, in particular to a measuring device for the stiffness of the main shaft of a grinding wheel frame of an external grinding machine. Background technique [0002] With the development of modern precision grinding technology, the rigidity requirements of various parts of machine tools are getting higher and higher. The grinding wheel frame system is the weak link of the whole machine tool, and its spindle is the key component of the grinding wheel frame system. Experimental research shows that whether it is idling test, vibration test or grinding test, the results show that the stiffness of the grinding wheel head spindle has a great influence on the dynamic instability of the entire cylindrical grinding machine. At present, many scholars at home and abroad are modeling and analyzing the dynamic characteristics of cylindrical grinding, and the stiffness of ...

AI Technical Summary

Problems solved by technology

In the actual grinding process, due to the complex structure of the grinding machine, it is often difficult to accurately obtain the stiffness of the grinding wheel head spindle.

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