Observation method of high-speed microphotography in machining

Abstract

The invention discloses the technical field of machining and relates to an observation method of high-speed microphotography in machining. The observation method is especially suitable for conventional cutting processing like drilling and milling. The observation method includes that according to a platform layout scheme, an X-direction displacement sliding platform and a Y-direction displacement sliding platform are used to realize rough adjustment of focal length of a camera, a Y-direction precise displacement platform is used to realize precise adjustment of the focal length of the camera, and a rotating platform is used to realize adjustment of photographing angle of the camera; light source layout is realized by adopting a mode combining an annular light source with platy light sources in pairs, so that photographing area brightness is improved. By the observation method, distance and angle between the camera and a to-be-observed area can be adjusted accurately, observation preparation time can be reduced, observation efficiency can be improved, and unfavorable influence of vibration of a machine tool on photographing during machining is overcome. The layout scheme of the platforms has high universality, the platforms are simple in structure, and actual machining processes like drilling and milling can be observed accurately.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a high-speed microphotography observation method in the mechanical processing process, which is particularly suitable for traditional cutting processes such as drilling and milling. [0002] technical background [0003] Drilling, milling and other cutting processes are important links in modern industrial production, and the efficiency and quality of the processing are directly related to the economy and functionality of the final product. High-speed micrographic observation can directly observe the formation process of chips and machining damage in the cutting process, but the implementation of this method is very difficult, and a series of problems such as light source intensity, camera installation and adjustment need to be solved. [0004] Some scholars have carried out high-speed photomicrographic observations on the drilling process, such as the paper "Ultrafast...

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Problems solved by technology

[0004] Some scholars have carried out high-speed photomicrographic observations on the drilling process, such as the paper "Ultrafast Feed Drilling of Carbon Fiber-Reinforced Thermoplastics [C] published by Yasuhiro Kakinuma et al. Procedia CIRP, 2015, 35: 91–95." The dynamic observation of the drilled CFRP material from the side is provided, but the information of the measuring device is not given, and the image resolution is low, the observation angle is limited, and the observation results are still in the scope of macroscopic measurement.

Wang Fuji of Dalian University of Technology and others disclosed "an experimental device and method for hole-making and processing export observation", patent application number: CN201510506132.6, this device uses a light source other than the camera lens structure for illumination, and the light source is easy for the observation part The specular reflection with a large angle is formed, so that the light cannot be received by the photosensitive element of the camera, and the brightness of the object to be photographed is reduced, which is not conducive to the observation at a high frame rate. However, in order to clearly observe the cutting state of the material, micro However, this experimental device cannot precisely adjust the distance between the camera and the photographed plate, making it difficult to perform macro observation

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