What kind of car knife makes the surface of an artifact very good?

Answer:

Hard alloy welding tool can make the surface of the workpiece very well. A welding tool, is on the carbon steel cutter bar open groove, according to the requirement of the cutting tool geometry Angle solder will carbide blade welding in the tank, and according to the selected tool geometric parameters used after grinding. Workpieces burr, knife didn't grind good quick wear, or when the car broke down the tip chip effect is poor resistance, friction of burr, must be used before knife kong pen ground leveling wheel, grooving to smooth, straight knife grinding according to the material, material hardness, allowance for reasonable grinding tool face Angle, different size coarse car finishing tool, slot depth and the width is then strain, to years of experience is not to say that the can be on the basic skills are solid. But must grind the sharp, also want to workpiece chip impact resistance, wear resistance after the surface is smooth, cutter according to the material, hardness, choose reasonable tool bit is also very important.

It's not a car knife problem. Any R angles need to be combined with the speed. The speed of the cutting. The speed of the feed. The cutting agent. And the material of the tool

. Due to the change of temperature, make the size change Deformation in cutting, the chip, chip of various molecules move from each other, and when they move in friction and produce a large amount of heat. Front friction, in addition, because of the chip and tool behind the cutting tool and the workpiece surface friction heat, the heat will directly affect the cutting tool and workpiece. Of course, the highest heat is the cutting (about 75%), followed by the car knife (about 20%) and the workpiece (about 4%, and 1% in the air). When the workpiece is heated, the diameter increases (about 0.01 ~ 0.05 mm, iron is changed more than steel), and then the diameter shrinks after cooling, causing the waste. It cannot be measured at high temperature. If it is necessary to side, pour enough cutting fluid in the turning, not to raise the temperature of the workpiece. The second is the method of separating from the crude. The blank is not enough to be curved without the straightening, and the center hole is deflated. The main reasons for the lack of geometry accuracy and location accuracy are not to be desired

In the process of turning the axle, the precision and surface roughness can't meet the requirement. According to the process of turning, the analysis is carried out. A, size accuracy can not meet the requirements of reason and its solution (1) due to rough (careless) operator, when measuring children's gone wrong, or dial the wrong and improper use Should carefully earnestly, measurement, so the correct use of dial is often important, on the dragging plate handle dial, various types of lathe dial is not the same, each a small lattice dial can use the following formula: scale turn one tool moving distance = dragging plate screw distance/dial a total number scribed line (mm) know each scale value later, when use notice because there are clearance between screw and nut, although sometimes dial rotation, but turning tool may not move, such as gap to after turning tool didn't move. So, when you're using it, if the scale turns out to be too much, you're not allowed to go back a few times, but you turn around and refocus on the scale. The instrument must be carefully examined and adjusted before the measuring device has an error or use, and should be put forward when used

1. The lathe insufficient rigidity Such as drag board and iron is loose, and drive imbalance caused by vibration. Of course, lathe installed on shaky can also cause vibrations, caused by vibration of the workpiece surface roughness is reduced. 2. The tool rigidity caused vibration so as far as possible choose coarse tool rod, reducing tool out of a length; The rigidity of the workpiece can also cause vibration, so when turning a thin shaft, apply the center frame, or replace the two top folders with one pin. The cutting part geometrical parameters are incorrect according to the cutting characteristics of the workpiece materials, and the surface roughness is reduced. 4. Due to the generation of the devolop tumor, lower the surface roughness of the devolop tumor is very strong, because when cutting the devolop tumor involvement, makes the surface appear the phenomenon of hair or a road cross the trench, should try to avoid its produced when turning. In the analysis of the above reasons, we should know early prevention, eliminate the problem in the bud, improve the precision of the workpiece and meet the design requirement.