초록 ▼

The telescopic ball bar gauge provides a pair of movable test measuring points that are spaced apart a known distance so that the points may be contacted by a machine probe of a coordinate measuring machine or the like to generate test data. This allows varying inaccuracies within the machine to be

The telescopic ball bar gauge provides a pair of movable test measuring points that are spaced apart a known distance so that the points may be contacted by a machine probe of a coordinate measuring machine or the like to generate test data. This allows varying inaccuracies within the machine to be detected and accounted for during normal operation of the machine. The telescopic ball bar gauge includes a plurality of telescoping segments forming at least one linear variable differential transformer. The at least one linear variable differential transformer is used to measure the linear distance between two balls mounted on opposed ends of the ball bar gauge. A transmitter in communication with the at least one linear variable differential transformer transmits a measurement signal representing the linear distance between the two balls.

대표청구항 ▼

I claim: 1. A telescopic ball bar gauge, comprising:a telescopic rod having first and second telescopic segments;first, second and third annular solenoid coils mounted within the first telescopic segment, the first, second and third annular solenoid coils being mounted about a central tube, the seco

I claim: 1. A telescopic ball bar gauge, comprising:a telescopic rod having first and second telescopic segments;first, second and third annular solenoid coils mounted within the first telescopic segment, the first, second and third annular solenoid coils being mounted about a central tube, the second telescopic segment being slidable within the central tube to form a linear variable differential transformer; andfirst and second balls, the first ball being mounted to a free end of the first telescopic segment, the second ball being mounted to a free end of the second telescopic segment;wherein the linear variable differential transformer generates a measurement signal corresponding to a linear distance between the first and second balls.