1. Interior holes
The cutting characteristics of interior cars are: in the state of semi-closed, it is not practical to observe the crumbs and to affect the quality of the treatment. The deep cut of the holes often causes the knife stem to vibrate, so that the cutting blade is carried quickly, the cut of the small diameter holes is cut with a hard alloy knife and a reducing stroke of vibration is used in Average or higher diameter. When the external circle is made, the length of the part and the selected knife rod will not affect the suspension of the sword, so that they can withstand the cutting force generated during the treatment. During the cut and interior holes, because the dense hole determines the extension, the diameter of the pores and the length of the parts have large restrictions on the selection of tools.
Second, end -Noodles
The facial cut refers to the cut and treatment of the final surface of the part on the main cutting blade.
1. Precautions for the end of the car
1) The tip of the car knife knife must be intended for the center of the part to avoid the convex device on the left.
2) The end of the knife is easy to attach the knife when the amount of knife is large. Selection of a volume of knife AP: AP = 0.5 ～ 3 mm when the rough car and AP = 0.05 ～ 0.2 mm during the stainless steel car.
3) The diameter of the final surface is modified from the outside to the center, and the cutting speed also changes.
4) The final surface with a large diameter of the car. In order to precisely enter the car blade, the middle board in the middle should be tight on the bed, and the amount of back to eat with a small knife grid must be adjusted.
5) When the quality requirements of the end face are high, the last knife must be cut from the center.
2. Quality analysis of the car surface
1) The final surface is not flat, and the convex and concave phenomenon is generated where the “small head” is left in the center of the final surface. is not intended for the center of the room.
2) Poor surface roughness. The reason is that the car knife is not lively, the manual foot knife shakes uneven or too quickly, and the automatic selection of food is inappropriate.
Third, outdoor round car cut
The ordinary rounded car cut is treated on the surface of the part of the room to obtain the accuracy and quality of the required size. The ordinary round knife is divided into 95 °, 90 °, 75 °, 60 °, 45 °, etc. in the main corner of the tool. The main angle knife is suitable for the outer circle of the short and thick parts of the car.
The negative angle blade car blades are better than the car blade car knife, and the car blade blade blade is sharp and fast, but the size of the positive corner blade is generally Relatively small, suitable for small backs to eat knife volume, a small Jinfu Treatment Treatment Treatment The size of the negative corner blade can be made largely. Blade (the same shape, size and knife cutting arc). Different forms of blade mouth have a different strength, the effect of effective cutting blades is different and the number of tips may be different.
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