ZYS Precision Bearing,Bearing Test Machine,Rolling mill bearing

Precision bearings according to ISO grading standards are divided into: P0, P6, P5, P4, P2. Rank higher in turn, where P0 is the general accuracy, other grades are precision level. Of course, different classification standards, different types of bearings, their classification method somewhat different, but the meaning is to the. The use of performance requirements of precision bearings rotating body with high runout accuracy, high-speed rotation and small changes in friction and friction.

2015年1月13日星期二

Light-cut method is the use of "light cut principle" to measure the surface roughness

Light-cut method is the use of "light cut principle" to measure the surface roughness.
When fatigue testing machine surface roughness, the sensor on the measured surface of the workpiece, driven by the drive mechanism inside the instrument to do constant glide along the measured sensor surface, the sensor measured surface roughness feelings through the built-sharp stylus, this the measured surface roughness of the workpiece caused by the stylus is displaced, the displacement amount sensor inductance coil inductance changes, and the measured surface roughness to generate an analog signal proportional to the output of the phase-sensitive rectifier, which signal through after amplification and level shifting into the data acquisition system, DSP chip data acquisition digital filtering and parameter calculation, measurement results on the LCD readout can also be output on the printer, you can also communicate with the PC.