Geometric Parameter Optimization for Milling with Flat Jaw Parallel Pliers
The technique of milling with flat jaw parallel pliers is a widely used cutting technology used for machining various materials. The technique is a common choice for the machining of high-speed metals, aluminum, steel, and most nonferrous metals. While the technique of milling with flat jaw parallel pliers is gener-ally accepted as providing excellent accuracy, there are a number of geometric parameters that may be optimized to improve surface finish. This paper discusses the parameters and their optimization for milling with flat jaw parallel pliers, as well as some of the problems associated with their optimization.
The most important parameter of milling with flat jaw parallel pliers is the cutting edge angle. This angle should be selected based on the properties of the material being machined. When cutting harder materials, a lower cutting angle should be selected in order to reduce the thrust force generated during the cutting process. On the other hand, a higher cutting angle should be chosen for softer materials, in order to increase the chip loading and improve surface finish. In addition, the cutting edge angle should be optimized in order to reduce cutting forces, vibration, and chip size.
The rake angle, which is the angle between the cutting edge of the pliers and the workpiece surface, is another important parameter for milling with flat jaw parallel pliers. The rake angle should be maintained at an appropriate value in order to reduce friction between the pliers and the workpiece, increase the cutting efficiency, and to limit the formation of burrs on the surface. The rake angle should be optimized to achieve the smallest possible burr size.
The relief angle, which is the angle at which the workpiece surface is relieved of the cutting forces, is also an important parameter for milling with flat jaw parallel pliers. This angle should be selected based on the properties of the material, the type of tool being used, and the type of application. The relief angle should be optimized in order to minimize cutting forces, reduce vibration, and reduce chip size.
Another important parameter for milling with flat jaw parallel pliers is the nose radius. This radius should be optimized in order to reduce vibration and to improve chip thinning. The nose radius should be reduced only to the lowest value that is still able to ensure a proper cross sectional profile of the machined pieces.
The effective cutting width, which is the width of the cutting edge at the workpiece surface, is also an important parameter for milling with flat jaw parallel pliers. This should be optimized based on the application and the desired surface finish. The effective cutting width should be maximized in order to reduce cutting forces, reduce vibrations, and increase chip thinning.
Finally, the feed rate should be optimized in order to maximize productivity and minimize the cutting forces generated. The feed rate should also be chosen based on the material properties and the desired surface finish.
In conclusion, the optimization of the geometric parameters for milling with flat jaw parallel pliers is an important step in producing quality parts. Optimization of the cutting edge angle, rake angle, relief angle, nose radius, and effective cutting width will all help to improve the surface finish and reduce cutting forces, vibrations, and chip size. In addition, the feed rate should also be optimized to maximize productivity and minimize cutting forces.
