【正文】 n the form of the metal ball away gradually replaced by direct removal. Pressure tends to stay away from the workpiece cutting tool rather than narrow the gap between its parts. 919 A in the plan was an example of the use of a 30degree lateral Cutting Angle tool processing thin slice example. A mathematical proof of the plan 919 B in the rightangle triangle trip is to expand the use of a map 919 A right triangle in the same way, that is, in the direction of upward mobility to feed a inch. Right triangle adjacent to the edge (b) and feed feet equivalent. The following formula using triangulation to explain: Kok cosine A = rightangleB / C Xiebian Or cosine of 30 degrees = b / c = b/ b = * b = (bladed too thin) When the mobile tool, the purpose of frontto be processed to eliminate from the surface of the cutcutting tools. This angle is usually from 8 degrees to 15 degrees, but in exceptional circumstances it as much as 20 degrees to 30 degrees. If there is no gap in Figure 920 A, cutting tools will be tied up, sharp beep, and the rivets may be the first to die away. The appropriate space, in Figure 920 B, cutting tool will be cutting well. A manufacturing plant or cut off the fastcutter blade with three space, in a rootsurface or surface and the other in bilateral level, in Figure 921. If a tool Corner block from the date of the face, It can have up to five space, in Figure 922. Grooving tool sometimes known as area reduction tool used to cut a groove in the shallow end of the thread. Inclination is the top tool inclination or, in the Tool Corner block on the surface. Changes depending on the angle of the cutting material. Improvement of the cutting angle, the blade shape, and guidelines from the chip from the edge of the direction. Chip dip under the direction named. For example, if a chip from the edge cutter outflow, it is called anterior horn. If the chip to the back of the outflow, that is, to the Dao, which is known as the horn. Some mechanical error and the staff horn as a frontor knife corner. Single tool like Tool Corner block may be the only edge of the blade side oblique angle, or in the back, only to end on the edge of the horn, or they may have roots in the face or front surface of the main Cutting edge of the blade and cutting edge of the horn and a roll angle of the portfolio. In the latter case, cut off most of the surface with a cutter and a chip to the point of view in the tool horn and roll angle in both directions has been moved out. Two different roll angle in Figure 923 A and 923 B was an example. Angle depends on the size and type of material was processed. 924 A map in Figure 924 B and gives examples of zero to a fixed cutter after the two different angle. In Figure 925 B and 925 A Tool to the regular 15degree angle. Figure 926 tool to display a 15 degree angle fixed, but in this case a tool to roll angle after angle and the bination of form close to the workpiece. Double or multiple chips to lead the inclination angle of a mobile or two away from the edge of the back and side to stay away from the cutter. Comparison of various horn, shown in Figure 927, Corner of the horn of a negative point of view, and zero is the point of view. These dip in the Corner cutter on the manifestation of a decision in the hands of the processing needs of the pieces. After Kok was the size of the type of materials processing, and knives in Dao fixed on the way. The type of lateral oblique angle Figure 928 examples of tools Corner blocks and four different types of lateral oblique angle of the crosssectional. Figure 928 A, is zero lateral oblique angle, like some of the brass materials, some bronze and some brittle plastic material is particularly necessary. Standard side oblique angle, in Figure 928 B, is the most mon one of the bevel side. In the ductile material on the deep cut, easy to chip in the tool around the accumulation of many, and this will cause danger to the operator. The chip will bee a deal with the problem. Such a tool to cut off the grey cast iron is the most appropriate. Chip laps volumes, Figure 928 C, is one of the best types of inclination, especially in the ductile material on the special deep cutting. Chip small crimp in close formation against the Dao of bladed knives against the will of the rupture. The chip rolled up to maintain a narrow trough of the chip will guarantee that the width of closely Lane Vol. The chip is very easy to handle. Volume circle with a chip is not a cutchip. Chip cut off, in Figure 928 D, leading to chip in the corner was cut off, and then to small chips fell after the chip. The need to cut off a chip provides up to 25 percent of the force. This inclination of the stickiness of the steel is good. Gap Kok When cutting any material time, the gap should always be the smallest size, but the gap should never angle than the required minimum angle small space. The gap is too small knives Kok will lead to friction with the workpiece. Choice of space at the corner to observe the following points: 1