Workpiece temperature and size change on-line measuring device in turning process

Abstract

The invention discloses an on-line measuring device for temperature and size changes of a workpiece in the turning process. The on-line measuring device comprises a base and a supporting rod. A vertical supporting rod is installed on the supporting rod, a transverse lead screw mechanism is installed on the vertical supporting rod, and a vertical lead screw mechanism is installed on the transverse lead screw mechanism. A mounting bracket is mounted on the vertical moving plate; the mounting bracket is connected with a conductive slip ring fixing frame and an auxiliary bracket, the conductive slip ring fixing frame is provided with a conductive slip ring, and the end part of the auxiliary bracket is provided with a probe fixing frame; a chuck is arranged on one side of the conductive slip ring, and a tool rest and a turning tool are arranged on one side of the workpiece mounting area; temperature sensors are installed on the surface and inside the workpiece, a temperature sensor is installed on the side face of the turning tool, a thermocouple temperature collector is connected to an upper computer through a converter, a displacement sensor is installed above the workpiece in the radial direction, the displacement sensor is connected to a displacement range finder, and the displacement range finder is connected with the upper computer through a transmission line.

Description

technical field [0001] The invention belongs to the field of workpiece cutting state monitoring, and in particular relates to an on-line measuring device for workpiece temperature and size change during turning. Background technique [0002] Aluminum alloy is widely used in the aerospace field because of its low material density and good processability. With the development of manufacturing technology, turning is playing an increasingly important role in the processing of precision structural parts such as aviation and aerospace. During the turning process, the cutting heat enters the workpiece to increase the temperature, the workpiece expands when heated, and the size of the workpiece undergoes non-similar deformation, which affects the machined surface morphology, quality and workpiece size pass rate. At the same time, cutting heat affects the life of the tool. During the turning process, the workpiece and the spindle are running, the contact area between the tool flank...

AI Technical Summary

Problems solved by technology

Chinese invention patent application number CN202010186211.4 discloses a device for accurately measuring cutting temperature in turning and milling. Calibrate even

The commonly used dimensional measurement methods are surface measurement and three-coordinate measurement, but there are no reports on monitoring the cutting temperature during the cutting process and explaining the influence of cutting temperature on dimensional changes.

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