Grinding of stainless steel ball surface parts and common polishing methods!
In machine manufacturing and equipment maintenance. often encounter some parts with a spherical surface, for example, the ball head screw, ball bowl pad, ball bowl cover, etc. of the single-action punch require high geometric shape accuracy, dimensional accuracy and surface finish due to the inner and outer ball surfaces of these parts. Therefore, in the process, it is generally after semi-finishing and heat treatment of the parts, the fine grinding or grinding process diagram is arranged; Cylindrical ball surface process device; Cup grinding wheel; Grinding shaft; Tail thimble; Workpiece; Head thimble; Inner ball surface process device; Head rack Chuck; The defects of the old process are fine grinding of the inner and outer spherical surfaces. Generally, forming grinding wheel grinding method is often used. there are several problems in this method: the machining accuracy of the polished inner and outer sphere surfaces is directly related to the machining accuracy of the grinding wheel forming surface. therefore, the dressing requirements of the grinding wheel forming surface are high, the operation is complicated, and a higher technical level is required. Sometimes, in order to ensure the dressing requirements of grinding wheels, special process devices have to be manufactured.
The commonly used polishing methods for stainless steel balls are mechanical polishing, chemical polishing and electrochemical polishing, each of which has its own advantages and disadvantages. Mechanical polishing. Its advantages are good leveling of processed parts and high brightness. Its disadvantages are high labor intensity, serious pollution, inability to process complex parts, inconsistent gloss, short gloss retention time, tightness and rust. More suitable for processing simple parts, medium and small products.
Chemical polishing. Its advantages are less investment in processing equipment, high speed, high efficiency and good corrosion resistance. Its disadvantages are poor brightness, gas overflow, ventilation equipment and difficulty in heating. It is suitable for processing small batches of complex parts and small parts with low brightness requirements. Electrochemical polishing; Its advantages are long mirror gloss, stable process, less pollution, low cost and good corrosion resistance. Its disadvantages are high pollution prevention, large one-time investment in processing equipment, tooling and auxiliary electrodes for complex parts, and cooling facilities for mass production. Suitable for mass production, mainly used in high-end products, export products, tolerance products, its processing technology is stable and easy to operate.
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