DEVICE TO MEASURE RESISTANCE TO DRILLING Russian patent published in 2014 - IPC G01N3/58 

FIELD: measurement equipment.

SUBSTANCE: device comprises a boring drill, a carriage, installed on guides and driven by a screw gear, limiters of movement of the boring drill in the transverse direction, measurement current sensors, a device of data processing and transmission for energy-power parameters of an electric motor to an electronic computer. Rotation and feed of the boring drill are carried out by one DC motor, installed as fixed on the device frame. The torque from the electric motor is sent via a gear to a feed shaft of square shape in the cross section, then via a gear installed on the carriage of the device, the boring drill. Motion of the carriage along the guides and the feed shaft, and also feed of the boring drill are carried out via its automatic variator, for instance, a wedge-belt or its equivalent, the input shaft of which is connected to the electric motor, and the output one via a reducer with a screw gear. Limiters of displacement of the boring drill in the transverse direction are connected in series with each other, the frame and the carriage by flexible ropes.

EFFECT: higher accuracy of measurement of value of resistance to drilling of investigated materials, reduced wear of a cutting part of a boring drill and higher reliability of a drive, units and device design in general.

2 cl, 2 dwg