The machine's operating frequency cannot be detected accordingly, and the machine overload caused by the operating frequency is not taken into account. Therefore, it is necessary to develop a machine tool load inspection and control system with wide adaptability and certain control functions, which can be easily expanded according to the actual situation of the machine tool, to detect and control the load condition of the machine tool.
Realization of load detection and control system Pressure detection devices and overload protection devices commonly used on machine tools At present, the load detection of pressure machinery mainly uses strain gauges to measure the elastic deformation of the press frame and indirectly measures the load acting on the pressure machine. Because the pressure machine is in the normal working range, the deformation caused by the load of the frame, the slider and the like maintains a strict linear relationship with the actual load of the machine. However, this detection method is limited by the gage sticking process, and is not convenient for applications where the working environment is harsh.
The overload protection devices used on pressure machines are mainly mechanical, hydraulic, and gas-liquid. The mechanical protection device generally adopts a collapsed block structure in the form of a single shear surface and a double shear surface, which is mounted on the slider member of the pressure machine. When the machine tool is overloaded, the weak link is destroyed and the control circuit is cut off by the switch device to ensure the safety of the machine tool and its components.
(Finish)
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