Fine regulating device for three coordinate measuring machine

Abstract

The invention relates to a fine regulating device for a three coordinate measuring machine, which is characterized in that the fine regulating device mainly comprises a polished rod and a nut device, wherein the polished rod is connected with a base in a rotating way; the nut device comprises a shell which is fixedly connected with a moving component; the polished rod is penetrated through the shell; at least three idler wheels are arranged on the shell; the idler wheels are uniformly arranged at the outer side of the circumference of the polished rod; one of the idler wheels is a moving idler wheel; the other two idler wheels are stationary idler wheels; wheel shafts of the stationary idler wheels are fixedly connected with the shell; the wheel surfaces of the stationary idler wheels arein contact with the polished rod; a screw down mechanism is connected with the shell in a sliding way; the screw down mechanism can move along a direction vertical to the axial direction of the polished rod; the screw down mechanism is provided with a power unit which drives the screw down mechanism to push the wheel shaft of the moving idler wheel to move; the wheel shaft axes of the idler wheels have a deflection angle Theta relative to the axis of the polished rod; and the deflection angle Theta enables the polished rod to be clamped by the idler wheels; and when the polished rod rotates, the frictional force applied to the idler wheels by the polished rod has a component force which is parallel to the axial direction of the polished rod. The fine regulating device has low machining cost and reliable transmission.

Description

technical field [0001] The invention belongs to the field of precision measurement, and in particular relates to a fine-tuning device for a three-coordinate measuring machine. Background technique [0002] During the mechanical manufacturing, testing or research and development of molds, mobile phone accessories, stamping parts, clocks, auto parts and other industries, the requirements for the quality and precision of the workpiece are getting higher and higher. It is necessary to check the x, y, Accurately measure the coordinates in the three directions of z, which requires the use of a three-coordinate measuring machine (also known as a three-coordinate measuring bed). The three-coordinate measuring machine mainly includes a horizontal workbench, a data processor, a support on the workbench that moves in the x and y directions, and a measuring axis that moves in the z direction on the support, and the lower end of the measuring axis fixes the probe. The workpiece to be me...

AI Technical Summary

Problems solved by technology

At present, the commonly used fine-tuning device is the lead screw, but to achieve micron-level precision transmission, the lead screw needs to be finely processed, the structure is complex, and the processing cost is high.

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