Device and method for measuring effective flow rate and dynamic pressure of grinding fluid

Abstract

The invention discloses a device and a method for measuring effective flow rate and dynamic pressure of grinding fluid, which can be used for measuring not only the effective flow rate when the grinding fluid flows through a grinding wheel or a workpiece but also the dynamic pressure of the grinding fluid in the grinding area. The device for measuring effective flow rate and dynamic pressure of grinding fluid comprises a differential motion screw mechanism, a rubber baffle, an effective flow separating plate, a workpiece, a scraper plate, a collecting trough and a piezoelectric-type pressure sensor, wherein the width of the workpiece is equal to that of the grinding wheel; the effective flow separating plate is fixed on a sliding plate of the differential motion screw mechanism, and the horizontal movement of the effective flow separating plate to be close to or far away from the grinding wheel is controlled by a screw; the scraper plate which is in fixed connection is arranged at a position of the effective flow plate matching with the grinding wheel, the collecting tank is connected to the workpiece, and the rubber baffle is fixed on the sliding plate of the differential motion screw mechanism; the piezoelectric-type pressure sensor is fixed inside the workpiece, the pressure of the grinding fluids in the grinding area of the grinding wheel workpiece is transmitted to the piezoelectric-type pressure sensor through small holes on the workpiece, so that the dynamic pressure of the grinding fluid can be measured; in addition, the differential motion screw mechanism, the workpiece and the collecting tank are directly fixed on a workbench of a grinder.

Description

technical field [0001] The invention relates to a measuring device and method for the effective flow rate and dynamic pressure of grinding fluid. Background technique [0002] The grinding method has strong technological adaptability and a wide range of applications. It can perform rough, rough, fine and ultra-finish processing on various materials such as metal, ceramics, glass, stone, refractory, concrete, bone, and composite materials. Processing materials can only be processed by grinding at present, and there are more than 3,000 types of grinding machines currently known. More importantly, the final accuracy and surface quality of the vast majority of machined parts is determined by the grinding process. Therefore, grinding is one of the most basic and important process methods in the machining industry. [0003] Grinding, the energy consumption per unit volume of material is far greater than other cutting methods, and a large amount of heat is generated in the grindi...

AI Technical Summary

Problems solved by technology

Since the high-pressure jet can easily break through the barrier of the formed vapor film and ensure the continuous contact between the grinding fluid and the surface of the workpiece, it is possible to break through the barrier of film boiling and reduce the temperature of the grinding arc zone. This cooling fluid injection method is not suitable. Affected by the gas barrier of the grinding wheel, the heat transfer efficiency is high, but the disadvantage is that the grinding wheel is prone to vibration during operation, resulting in reduced precision and surface quality of the workpiece, and the liquid supply system has a complex structure and high cost

[0007] The ratio of the actual flow rate of the grinding fluid through the grinding wheel / workpiece to the flow rate of the nozzle is called the effective flow rate. Currently, the devices for measuring the effective flow rate of the grinding fluid through the grinding area are all based on the existing grinding machine liquid supply device. Improved, with limited automation and measurement accuracy, let alone measuring effective flow rate and grinding fluid hydrodynamic pressure

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