Grinding machine processing

Grinding machine processing

Grinding machines are key equipment for finishing the surface of parts in mold manufacturing, especially suitable for the processing of hardened workpieces. Grinding machines are mainly divided into surface grinders, universal internal and external cylindrical grinders and coordinate grinders (PG optical curve grinders).

Surface grinders are widely used to process small-sized mold parts, such as precision inserts, mold cores and sliders. The development of modern surface grinder technology has greatly increased the linear speed of the grinding wheel and the movement speed of the worktable, and the accuracy has also been further improved. The minimum vertical feed can reach 0.1μm, the surface roughness can be as low as Ra<0.05μm, and the processing accuracy can be controlled within 1μm. Most domestic precision mold factories use Japanese surface grinders, such as Japan's Okamoto grinders.

For rotating parts, especially those with high precision and high finish requirements, such as the half inserts of preform injection molds, it is more appropriate to use a cylindrical grinder for processing. With its high precision and high stability, the Swiss Stutt universal internal and external cylindrical grinder is an ideal choice for grinding medium-sized single parts and batch workpieces.

Optical curve grinders are suitable for processing high-precision hole spacing and various contour shapes. Through optical projection technology, high-hardness materials such as tungsten steel parts and carbide parts can be accurately processed. Optical curve grinders from brands such as Swiss HAUSER, American MOORE, and Japanese AMADA occupy an important position in mold manufacturing with their high precision and complex shape processing capabilities.