Numerical control machine tool cutting force load simulation device and method

Abstract

The invention provides a numerical control machine tool cutting force load simulation device and method. The device comprises a simulation tool device capable of bearing a radial force and an axial force simultaneously, a fixed device is installed at one end of the simulation tool device, a detection device for detecting magnitude of three-way acting forces of the simulation tool device is installed on the fixed device, and the detection device is further fixedly connected with a power device for providing three-way simulation cutting forces for the simulation tool device. After the devices are connected well, the pressure of the power device is adjusted, displacement and deformation of a measuring point are measured in the operating state of a machine tool, and therefore the rigidity of the whole machine tool and the rigidity of the parts can be obtained. According to the device, the three-way acting forces can be simultaneously applied to a machine tool spindle in the normal operating state of the machine tool spindle to simulate an actual machine tool cutting force, and therefore a rigidity chain composed of the rigidity of the whole machine tool and the rigidity of the parts of the machine tool is tested. A weak link in the rigidity chain is found out according to a test result, optimization design is performed on the weak link, and therefore the machining accuracy of the whole machine tool is improved.

Description

technical field [0001] The invention belongs to the field of mechanical devices, and relates to a cutting force simulation loading device and method for a numerically controlled machine tool. Background technique [0002] The rigidity of the machine tool and the rigidity of the parts are an important factor affecting the machining accuracy of the CNC machine tool. Insufficient rigidity will lead to a decrease in the machining accuracy and fail to meet the processing requirements. Therefore, a set of cutting force simulation loading device is designed to test the overall machining accuracy of the machine tool. Machine stiffness and component stiffness are essential. At present, although some corresponding loading devices have been developed to detect the stiffness of the machine tool spindle, most of the loading devices can only simulate the cutting force in one direction under static action, or simulate the application of cutting force in one direction when the spindle is wo...

AI Technical Summary

Problems solved by technology

[0002] The rigidity of the machine tool and the rigidity of the parts are an important factor affecting the machining accuracy of the CNC machine tool. Insufficient rigidity will lead to a decrease in the machining accuracy and fail to meet the processing requirements. Therefore, a set of cutting force simulation loading device is designed to test the overall machining accuracy of the machine tool. Machine stiffness and component stiffness are essential

At present, although some corresponding loading devices have been developed to detect the stiffness of the machine tool spindle, most of the loading devices can only simulate the cutting force in one direction under static action, or simulate the application of cutting force in one direction when the spindle is working. cutting force

This is somewhat different from the cutting process of the actual machine tool, and cannot truly reflect the actual cutting process of the machine tool.

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