Smoothing of Rock Surface by Percussive Crusher Driven with Solenoid (2nd Report)

Smoothing by 2-dimensional feeding

Abstract

This report deals with a rock-crasher embedded in the science integrated package for future lunar exploration. The crusher measures 59×60×129 mm and weighs 490 g. The generative impact force and consumption power were 150 N and 6 W at a voltage of 24 Vp-p and a driving frequency of 50 Hz device. A tool bit with pyramids driven with a solenoid was made from tungsten carbide. When a basalt sample was randomly fed with a feedscrew and crank mechanism in two directions, a smoothed surface was obtained. Ridges remained in one direction feeding even by skewing the tool at an angle of 11.4°.