Method for drill resistance measurement for testing of material, such as wood, plastics, flooring or sandstone, by electronic controller, involves adjusting penetration rate by continuously adaptive speed change of feed drive

摘要

The method involves adjusting the penetration rate by continuously adaptive speed change of a feed drive such that a tool rotating motor is charged during a measurement in a defined way. The feeding is adjusted such that a rotary motor is always charged about 50 percent. The feed rate is changed according to the material density or the penetration resistance. The speed of the feed motor is increased until the rotary motor reaches to load limit.