Reduction of roughness during workpiece processing

The level of surface roughness of the product during processing is determined by many factors. The mode, speed, and type of processing affect the height of the irregularities, their shape, and the pattern of their location. The roughness also depends on the structure of the material and its chemical composition. The design and durability of the cutting tool, the level of its cooling and lubrication are important. All factors are grouped into three groups. The first group is related to the vibration of the cutting tool during processing, the second is related to the geometry and angle of the cut, and the third is related to the level of deformation occurring in the processed material.Both the tool and the product, as well as the machine, are subject to vibrations during operation. They are caused by the feeding of the tool, as well as the periodic appearance of a rivet on the surface and a change in the cutting speed or friction conditions. Fluctuations can also cause malfunctions in the machine mechanism, its uneven movement during processing. The machine must be properly and firmly installed, isolated from the influence of other vibration-causing tools on its operation. High-quality rigid fastening of all auxiliary parts of the machine is a necessary condition for reducing roughness. Vibrations emanating from the machine system during fine diamond processing are especially important. The allowance for fine boring is uneven, and fluctuations in cutting forces are high, which can cause technological vibrations. The roughness is most affected by the vibration of the cutting blade during any type of work. As the amplitude of the oscillations increases, the roughness increases.The geometry of the tool includes projecting onto the work surface the shape of the cutting part of the tool and the direction of its movement. A soft or elastic material, when exposed to it, distorts the original geometry of the tool feed and contributes to an increase in the height of irregularities and their chaotic distribution over the surface. Scratches and irregularities appear on the blade during the manufacture of the cutting tool and during its use. Of course, this contributes to a decrease in the quality of product processing. This is especially noticeable when the work is fine and the tool feed is low. Sometimes the irregularities of the tool are not copied to the treated surface. This happens when the softened chips and the molten surface enter the recesses of the cutting blade, lingering in them and reducing their size. Blunting the cutting tool means increasing the rounding of the blade. This leads to an increase in surface deformation and a decrease in processing quality, respectively. Timely sharpening will eliminate such consequences, diamond finishing works best.Metal deformation during processing is especially high if the metal structure is brittle. Relatively large particles may be torn from the surface, which will significantly increase the roughness. In this case, processing speed is of great importance. At low speed, no build-up forms on the surface, which reduces roughness. Increasing the speed will give an increase, but if you continue to increase it, it will begin to decrease, and the processing quality will increase again. The higher the softness and brittleness of the metal, the higher cutting speeds are recommended. During the final processing of the product, it is worth using a low speed to avoid the appearance of build-up. The cutting depth has virtually no effect on the roughness. But if it is minimal, around 0.02 mm, then the tool will squeeze off the part and slide along its surface, leaving abrasions on it. When applying lubricant and coolant to the tool, friction is reduced, the chips come off more easily, this reduces the level of surface roughness. Commencer à parier sur 1xBet avec un bonus conséquent est un avantage non négligeable. Lors de la création de votre compte, que vous soyez en Guinée, au Gabon ou au Congo, n'oubliez pas d'utiliser le code promo 1xbet sénégal dans le formulaire d'inscription. Ce code débloque un bonus de bienvenue de 100% jusqu'à 130€ sur les paris sportifs, vous offrant ainsi des fonds supplémentaires pour tester différentes stratégies. Vous pouvez aussi opter pour le pack casino qui propose 1950€ et 150 tours gratuits, parfait pour découvrir l'univers des machines à sous.