Deburring
Fully automatic deburring machine manufacturers take you to understand that deburring is to remove the thorns or flashes formed at the intersection of the part surface and the surface. The hazards of burrs are particularly obvious, and people have gradually attracted widespread attention, and began to study the generation mechanism and removal methods of burrs.
Some of the burrs on mechanical parts are caused by plastic deformation during the cutting process; some are flash from casting and die forging, and some are leftovers from welding and extrusion. With the improvement of industrialization and automation, in the field of mechanical processing, especially in the fields of aviation, aerospace, and instrumentation, the requirements for the manufacturing precision of mechanical parts and the miniaturization of mechanism design have become more obvious. General attention, and began to study the generation mechanism and removal methods of burrs. In 1953, many Japanese manufacturers began to develop special automatic deburring machines for large and medium-sized castings such as automobile brake drums, cylinder blocks, and gearbox bodies. Due to the poor adaptability of this kind of deburring machine to parts, high price and other factors, it has not been widely promoted and applied, but this laid a good foundation for the later developed casting deburring technology.
In terms of theoretical research, in 1958, Professor Okushima of Kyoto University in Japan published a thesis "On the phenomenon of burrs in the cutting process", discussing the phenomenon of burrs and the classification of burrs. In 1959, Professor Kumabe of Utsunomiya University published a paper entitled "Discussion on Reducing Burr by Vibration Cutting". In 1967, Professor Caiman of Jinggang University published an article "Research on Burrs Formed by Drilling Aluminum Alloy Plates". In the same year, R. William of the United States proposed to mix abrasives with silicone resin as a medium and press it into a mold containing parts to remove burrs on the inner surface and holes of the parts (that is, extrusion honing deburring technology). Achieved initial success, and now the technology has become a US patent. In 1971, under the guidance of Professor Kinoshita of Vocational Training University, the Japan Comprehensive Casting Center developed a numerically controlled belt grinding device that can remove burrs from castings of any shape. In December of the same year, the Japan Abrasive Processing Research Association held a "Deburring Process Lecture", where papers on deburring by abrasive, emery cloth, ultrasonic, chemical, and electrolytic methods were published. In 1972, the casting deburring machine developed by Koyama Co., Ltd. and the automatic cylinder block deburring device developed by Komatsu, Japan won the Japan Automation Machinery Award. Takayao from the Shibaura Electric Manufacturing Technology Research Institute in Tokyo, Japan, conducted more than 20 main deburring methods on the deburring principle, the size and location of the burr, the shape of the deburring part, the degree of automation difficulty, the cost of operating equipment, and the characteristics. In-depth research and discussion.
In 1973, Grilispi of the University of Diezhou in the United States completed a thesis entitled "The formation and properties of burrs in mechanical processing", which analyzed the principle of burr formation during mechanical processing and discussed the observation of burrs during the experiment. . The United States pays more attention to the deburring technology of mechanical parts because the mechanical manufacturing industry in the United States is developing rapidly, with high output, large batches, and high quality requirements. Manual deburring cannot meet the needs of production development. In 1974, the American Society of Manufacturing Engineering first established the Burr Technology Branch to begin research on deburring technology.
This was the beginning of the formal burr issue on the agenda. Around 1976, Japan had more than 300 patents on deburring technology, of which about 90 patents related to deburring technology for plastic workpieces. In the meantime, Japanese technicians have conducted a lot of research and experiments on the causes and preventive measures of burrs, and have made certain progress. Among them, the research and application of vibrating light deburring machine (also known as vibratory roller mill) has been obtained in the world. Praise. Since 1984, Professor Kazuo Nakayama from Yokohama University in Japan has carried out a more comprehensive and systematic definition and classification of cutting burrs based on the basic elements of cutting direction and cutting edge of the tool.
A large number of experimental studies and theoretical analysis have been carried out on the influence of factors such as physical properties, workpiece shape, and geometric parameters of the tool on cutting burrs, which have laid a theoretical foundation for effectively suppressing and reducing the generation of burrs. The hydraulic industry of the former Ministry of Machinery of my country listed deburring technology as the main research project to improve the quality of hydraulic products during the "Seventh Five-Year Plan" period.
In the 21st century, the deburring technology has been paid more and more attention by various industrialized countries. With the acceleration of my country's industrialization process, the application of parts deburring technology has become more extensive and the technology has become more skilled, and more and more departments have begun to pay attention to parts deburring. Technology research and application, and has achieved fruitful research results.
