Reliability Test Rig of the Motorized Spindle and Improvements on Its Ability for High-Speed and Long-Term Tests

Table 1

Main parameters of the EHSLS.

Speed (r/min)	Frequency (Hz)	Fr (N)		Fa (N)
		Base value	Amplitude	Base value	Amplitude
595	10	−1346.5	407.4	−358.1	194.7
		−673.3	219.7	−179.1	−108.8
		646.4	219.7	237.5	194.7
		1292.7	473.7	475.0	225.0
950	16	−820.7	235.1	−279.2	44.1
		−410.4	131.5	−139.6	123.0
		485.3	131.5	163.9	146.0
		970.6	243.9	329.8	246.0
1600	27	−522.6	201.6	−128.3	−27.8
		−261.3	44.5	−128.3	45.2
		229.6	98.4	−64.2	−27.8
		459.2	174.7	118.0	45.2
1900	32	−335.5	124.9	−136.3	36.9
		−167.8	71.2	−136.3	73.5
		170.5	71.2	99.5	36.9
		341.0	143.8	199.0	86.8
3000	50	−232.5	89.1	−48.2	10.5
		−116.3	26.9	47.1	10.5
		141.2	52.8	47.1	32.2
		282.3	103.0	94.0	75.8