The difference between cold rolled lead screw and ground lead screw is as follows:
First, the processing methods are different.
The cold-rolled lead screw first cuts a groove of a certain depth in the polished rod material, the groove pitch is equal to the lead pitch you want to machine, and then rolls out with a friction machine similar to machining screws. On the basis of rolling, the grinding screw uses a special cylindrical grinding machine to precisely machine the arc groove, and the cutting groove is located at the bottom of the arc groove.
2. The scope of application and fees vary.
The wire rolling accuracy grade is medium to low, which is suitable for equipment with low general accuracy requirements. The use of industries that do not require high precision has a short service life and high efficiency, but the cost is low. The precision level of grinding wire is medium to high, which is suitable for equipment with high precision requirements such as CNC machine tools. It has high precision, long service life and high efficiency, but the cost is high.
Third, the appearance is different.
The cold-rolled lead screw is formed by extrusion, and the grinding level, as the name suggests, is made by grinding. The conversion is different from the grinding process, and there are process marks after it comes out naturally. Cold rolled lead screw.
The surface is smooth and bright with light conditions.
High reflectivity, dazzling.
The grinding marks of the grinding wheel can be carefully seen on the surface of the grinding screw. In terms of appearance, the raceway groove of the conversion grade screw is smooth and shallower than that of the ground screw. Conversion grade screw raceways usually have a small groove on top of the projection between the raceway groove and the raceway groove.