High-speed dynamic simulation test method for electric mainshaft bearing

Abstract

The invention relates to a high-speed dynamic simulation test method used for an electric mainshaft bearing. The electric mainshaft bearing comprises a frame, a main body pedestal, an axial loading cylinder, a test head assembly, a main body gland, a radial loading cylinder, a shaft coupling, a protecting hood, an electric mainshaft, a lubricating oil pipe, an axial loading oil pipe, a vibration sensor, a radial loading oil pipe and a temperature sensor and also a final assembly of all the parts. A hydraulic loading system is started to provide pressure oil to the axial loading cylinder and the radial loading cylinder, the electric mainshaft drives a test mainshaft to rotate, the radial loading cylinder exerts radial force on a first test accompanying bearing and a second test accompanying bearing through a radial loading sleeve, and the radial loading cylinder exerts axial force on a first test bearing and a second test bearing through an axial loading sleeve. The entire test is controlled by a computer to display parameters of the rotating speed, the axial load and the radial load, the oil pressure, the cooling water temperature, the bearing temperature, the bearing vibration, the power current of the electric mainshaft and the test time, and the parameters are saved in a computer database and analyzed.

Description

technical field [0001] The invention belongs to the technical field of bearing tests, and mainly relates to a high-speed dynamic simulation test method for electric spindle bearings. Background technique [0002] The electric spindle is the main body of high-speed cutting technology, and the core functional component of high-precision, high-efficiency, high-end CNC machine tools. When the electric spindle is performing high-speed cutting work, it has to withstand harsh working conditions such as rapid speed rise and fall and frequent changes in cutting force. The working environment of the electric spindle requires its supporting bearing to have good high-speed performance, high dynamic load carrying capacity, and lubrication Good and low calorific value. [0003] At present, most of the electric spindles use angular contact ball bearings as supporting bearings. Therefore, the rotation accuracy, load capacity, lubrication state, and heat dissipation conditions of angular co...

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Problems solved by technology

[0008] However, the high-speed dynamic simulation test device and test method for angular contact ball bearings are still blank in China, and the relevant literature has not been reported.

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