Test bench of comprehensive performance of high speed and high precision electric spindle bearing
An electric spindle, high-precision technology, applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve problems such as the actual operating status of limited CNC machine tools, the danger of operators and machine tools, and unsatisfactory problems. Achieve the effect of convenient start and stop control, good coaxiality and balanced force
Inactive Publication Date: 2019-01-11
HARBIN UNIV OF SCI & TECH
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Problems solved by technology
At present, the electric spindle bearing test is carried out together with the electric spindle under no-load conditions. This method is not enough to reflect the influence of dynamic load and different speeds on the bearing performance under the actual working conditions of the electric spindle; and the measurement process is limited. Due to the actual running state of the CNC machine tool, data acquisition under the extreme working conditions of the electric spindle will cause great danger to the operator and the machine tool, and cannot meet the test requirements of the electric spindle bearing under various working conditions
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[0017] The specific structure and implementation mode of the present invention will be further described below in conjunction with the accompanying drawings.
[0018] The structural composition of the present invention is as figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 shown. The high-speed and high-precision electric spindle bearing comprehensive performance test bench consists of electric spindle (1), hoop (2), base (3), coupling (4), main shaft (5), test bearing assembly (6), bearing end cover (7), spacer (8), test bearing (9), spindle bracket (10), loaded bearing assembly (11), outer end cover (12), loaded bearing (13), bearing sleeve (14) , slide table (15), slide rail base (16), nut screw pair (17), axial loading mechanism (18), piston cylinder (19), spring (20), piston guide rod (21), support seat (22), radial loading mechanism (23), shafting gland (24), piston bushing (25), piston (26), shafting end cover (27), and screw (28). The electric spindle ...
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The invention relates to a test bench of comprehensive performance of high speed and high precision electric spindle bearing. The test bench is composed of an electric spindle, hoops, a base, a coupler, a spindle, test bearing assemblies, a loaded bearing assembly, a sliding table, a nut screw pair, an axial loading mechanism, and a radial loading mechanism. The electric spindle is connected withthe base through hoops, and serves as a source power device of the test bench. The electric spindle is connected with the spindle through the coupling, and supplies power to the spindle. The test bearing assemblies and the loaded bearing assembly are coaxially mounted. A pair of test bearing assemblies is arranged at two ends of the main shaft. The loaded bearing assembly is arranged at the middleof the spindle. The test bearing assemblies are connected with a slide rail base through the sliding table, and push the sliding table to move through the nut screw pair. The axial loading mechanismgenerates axial loads under the action of hydraulic pressure, and acts on the test bearing assemblies. The radial loading mechanism pushes a piston to move into a groove of a bearing sleeve under theaction of hydraulic pressure to generate a radial load, and acts on the loaded bearing assembly.
Description
technical field [0001] The invention relates to a comprehensive performance test bench for high-speed and high-precision electric spindle bearings. Background technique [0002] With the continuous development of the CNC machine tool industry, the electric spindle is required to have high reliability and stability. The bearing is the core component to realize the high speed and high precision of the electric spindle. The comprehensive performance of the electric spindle bearing has an important influence on the actual operation of the electric spindle. At present, the electric spindle bearing test is carried out together with the electric spindle under no-load conditions. This method is not enough to reflect the influence of dynamic load and different speeds on the bearing performance under the actual working conditions of the electric spindle; and the measurement process is limited. Due to the actual running state of the CNC machine tool, data acquisition under the extreme ...
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Login to View More IPC IPC(8): G01M13/045
CPCG01M13/045
Inventor 戴野魏文强战士强尹相茗齐云衫
Owner HARBIN UNIV OF SCI & TECH