Equal-height measuring instrument and method for large-span segmented lathe bed of machine tool

Abstract

The invention discloses an equal-height measuring instrument and method for a large-span segmented lathe bed of a machine tool. The instrument comprises two same measuring devices which are respectively arranged on two segmented lathe beds. Each measuring device comprises digital display depth micrometers, an acousto-optic buzzer, permanent magnetic chucks, a metal base, air pipes, an electrolytepipe and a metal measuring cylinder; the metal measuring cylinder is fixed on the metal base; the upper part is connected with the air pipes filled with pressure air; the lower part is connected withthe electrolyte pipe filled with electrolyte; the digital display depth micrometers are installed on the metal measuring cylinder through insulating layers. The measuring devices are fixed on the segmented lathe beds by the permanent magnetic chucks; the acousto-optic buzzer is connected with the digital display depth micrometers and the metal base to form a conductive loop; the two measuring devices are communicated with the electrolyte pipe through air pipes, the liquid levels in the two metal measuring cylinders reach the same horizontal plane, a detection contact of the digital display depth micrometer makes contact with the liquid level of electrolyte to enable the conductive loop to be connected, and the equal height of the two segmented bed bodies is obtained through the depth difference value of the two digital display depth micrometers. The instrument is unique in principle, convenient to operate and high in measurement precision.

Description

technical field [0001] The invention relates to the measurement of a numerically controlled machine tool, in particular to a contour measuring instrument and method for a large-span segmented bed of a machine tool, belonging to the technical field of numerically controlled machine tools. Background technique [0002] The bed is the basic component of the large-span gantry mobile machine tool, and it is also one of the necessary components. Above the bed is the gantry frame used to process parts. The gantry frame can complete linear motion along the bed. When the gantry frame moves, the bed The accuracy of the body will directly affect the movement accuracy of the gantry. The bed body of a large gantry mobile machine tool is divided into two parts on the left and right sides, and the distance between the bed beds on both sides is usually 5 to 10 meters, or even farther; the bed bed on each side is composed of multiple segmented beds It is spliced ​​together, and the total le...

AI Technical Summary

Problems solved by technology

The operation process of this method is complicated, takes a long time, and has high requirements for operators. The measurement process is easy to cause reading deviation due to various interference factors or even give up halfway.

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