Ball mill and ball grinding method

Abstract

The invention relates to a ball grinder. The ball grinder comprises an upper millstone ring, an upper motor, a lower millstone ring and a lower motor. The upper millstone ring is provided with an opening. A blanking transposition assembly is installed at the opening. A slide way is arranged on the upper end surface of the upper millstone ring. A branch discharging track is arranged on one side of the slide way. An inner ring grinding track and an outer ring grinding track are arranged between the upper millstone ring and the lower millstone ring. The blanking transposition assembly is provided with a blanking hole, a connecting track and a steering track. The invention further discloses a ball grinding method. According to the ball grinder and the ball grinding method, primary grinding is conducted up and down at first through the upper millstone ring and the lower millstone ring, and then after balls of the inner ring grinding track and the outer ring grinding track are alternated, secondary grinding is conducted up and down; the structure design is ingenious; and the grinding effect is good.

Description

Technical field [0001] The invention relates to the field of grinding balls, in particular to a ball grinding machine and a ball grinding method. Background technique [0002] In the process of making table tennis, the surface of the table tennis ball needs to be ground to make the surface smooth to meet the national standard. At present, the grinding machine that grinds the spherical surface generally uses upper and lower grinding heads to grind the sphere. For example, the Chinese invention patent announced on 2017-01-18 with the authorized announcement number CN104149022B discloses a spherical grinding machine, including The upper part of the frame is provided with an upper grinding head assembly, and the lower part corresponding to the upper grinding head assembly is provided with a lower grinding head assembly. The upper grinding head assembly and the lower grinding head assembly move relative to each other to grind the surface of the workpiece. Used to realize the grinding...

AI Technical Summary

Problems solved by technology

However, this spherical grinder can only grind one sphere, which is inefficient and not suitable for mass production of table tennis balls.

[0003] In order to solve this problem, the upper grinding head is changed to the upper grinding track disc, and the lower grinding head is changed to the lower grinding track disc. There are inner and outer ring grinding tracks with the same center between the upper and lower grinding track discs. A batch of table tennis balls are stored on the outer ring grinding track. Although this scheme can grind multiple table tennis balls at one time, the ping pong balls on the inner and outer ring grinding tracks are not equal due to the different circumferences on the inner and outer ring grinding tracks. Inconsistent ball grinding effect

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