Machining bearing with computer gong

1. First, clean the bearing in gasoline and wipe off the oil sludge and dust left on the bearing. All bearings with rust are gently polished with metallographic sandpaper until there is no roughness by hand.
2. Dry the cleaned bearings with dry rags, and then soak them in antirust oil. In the process of CNC machining, the bearing should be completely contacted with the antirust oil, and the bearing should not be stopped. Only in this way can the oil film formed by the antirust oil cover the surface of the bearing and achieve the purpose of antirust.
3. Next, apply lithium grease and grease evenly on the surface of the bearing, including inner and outer rings, wheels and cages. And it is to wipe while rotating the bearing, so that the grease really into the bearing, play a full role in lubrication.

There are many ways to obtain the accuracy of measuring workpiece size in machining, one of which is the trial cutting method. What is its main operation?

That is, first try to cut out a small part of the machined surface, measure the size of the trial cut, adjust the position of the cutting edge of the cutting tool relative to the workpiece according to the processing requirements, and then cut again by CNC machining, and then measure again. After two or three times of trial cutting and measurement, when the machined size meets the requirements, the whole surface to be machined can be cut. The trial cutting method is repeated until the required dimensional accuracy is achieved through “trial cutting – Measurement – adjustment – re cutting”. For example, trial boring of box hole system.

The precision of the trial cutting method may be very high, it does not need complex devices, but this method is time-consuming (need to make multiple adjustments, trial cutting, measurement, calculation), low efficiency, depends on the technical level of workers and the accuracy of measuring instruments, and the quality is unstable, so it is only used for single piece and small batch production.

As a type of trial cutting method matching, it is based on the processed parts, CNC machining another matching workpiece, or combining two (or more) workpieces for processing. The final dimension to be processed in the matching process is based on the matching requirements of the machined parts.