2results about How to "Measurement applicable" patented technology

This application provides an axial clearance measuring device for ball screw pairs. It uses a top-down nut clamping structure and a screw clamping structure to vertically position the nut and screw of the ball screw pair to be tested. Compared to existing measuring structures that use a clamping structure where the screw and nut are placed laterally, this avoids the problem of inaccurate measurement results caused by center offset due to the lateral placement of a long screw. This application uses a U-shaped fixed clamping block and a U-shaped rotating clamping block in the screw clamping structure, forming an interlocking plug-in structure. A shrinkage slit is provided on the first clamping arc to ensure that the screw clamping structure can effectively clamp any part of the long screw. This avoids the problem of dimensional errors in the long screw during processing affecting the clamping effect and thus the measurement results.

This invention discloses a method for measuring the volume of irregularly shaped sealed containers, addressing the problem of inaccurate volume calibration of irregularly shaped sealed containers using existing direct water filling methods. The method includes: first, evacuating the irregularly shaped sealed container under vacuum; then, constructing a measuring device using a transparent flexible tube, a vacuum device, and a water-filling container; allowing ultrapure water to enter the irregularly shaped sealed container under the pressure difference created between air and the container; simultaneously, using the vacuum device to assist in filling the container with ultrapure water; and finally, calculating the volume of the irregularly shaped sealed container by combining the weight of the container before and after water filling with the density of the ultrapure water. Compared to the direct water filling method, this invention ensures that the irregularly shaped sealed container is completely filled with water, leaving no gaps or air bubbles, thereby improving the accuracy of volume measurement.