Machine for grinding test pieces

The present invention provides a kind of laboratory machine for polishing the metallic test slice, it is suitable for polishing the test slice of the expriments of focussing mechanism, corrosion and rustiness and other metallic material. It adopts the linear movement mode to grind, the course of leveling and polishing the test slice is acomplished by the different direction and different speed movement and friction of the test slice and abrasive paper. The grinding box for loading the test slice can be changed conveniently in accordance with the specification of the test slice, and multiple slices can be polished simultaneously.