GRINDING APPARATUS WITH LOAD CONTROL

摘要

The present disclosure relates to grinding apparatus for grinding the hard metal inserts of rock drill bits, said grinding apparatus having said grinding machine equipped with a grinding cup driven by a motor to rotate about its longitudinal axis wherein the support system comprises an arm or lever system to control vertical movement of the grinding machine and means to provide grinding pressure, wherein the means to provide grinding pressure may be a linear actuator and load cell assembly pivotally connected to the arm or lever system.

主权项

1. A grinding apparatus for grinding the hard metal inserts of rock drill bits, said grinding apparatus having a grinding machine carried on an support system and means for holding one or more bits to be ground, said grinding machine equipped with a grinding cup driven by a motor to rotate about its longitudinal axis, wherein the support system comprises an arm or lever system to control movement of the grinding machine for alignment of the grinding machine with a hard metal insert to be ground, means to provide grinding pressure, means to monitor and control one or more operational functions of the grinding apparatus selected from the group consisting of force, grinding pressure, movement and speed of movement of the grinding machine during alignment with a hard metal insert, wherein the means to provide grinding pressure includes a linear actuator and a load cell assembly to quantify and measure the force being applied during grinding, the linear actuator and load cell assembly or other part or assembly of grinding machine further includes means to enable the grinding machine to move slightly during grinding over an uneven surface on the hard metal insert without adjustment of the linear actuator, and a programmable control system to monitor, control and adjust grinding pressure based on input from the load cell by adjusting the speed and length of travel of said linear actuator.