In the field of CNC lathe, the operating proficiency and the mastery of basic knowledge are closely related. Only by keeping the basic knowledge in mind can we be handy in the operation process, and we can also deal with it freely when encountering emergencies. Today, our CNC lathe manufacturer will explain to you the three major elements that need to be met in the operating conditions of CNC lathe cutting center.
The three elements of cutting conditions: cutting speed, feed rate and cutting depth directly cause tool damage. With the increase of cutting speed, the temperature of the tool tip will rise, and mechanical, chemical and thermal wear will occur. Not only does the 1:10 taper surface of the tool holder contact the 1:10 taper surface of the machine tool spindle hole, but also the flange surface of the tool holder is in close contact with the spindle surface. This double-sided contact system is superior to the 7:24 general tool holder in high-speed processing, connection rigidity and coincidence accuracy. The tool life will be reduced by 1/2 when the cutting speed is increased. The relationship between feed conditions and tool back wear occurs within a very small range. Regular and stable wear to reach the life is the ideal condition. However, in actual operation, the choice of tool life is related to tool wear, change in the size of the workpiece, surface quality, cutting noise, processing heat, etc. When determining the processing conditions, it is necessary to study according to the actual situation. For difficult-to-process materials such as stainless steel and heat-resistant alloys, coolants can be used or blades with good rigidity can be selected.
Under the condition that CNC lathes have not yet been widely used, the excess margins on the burrs should generally be arranged on ordinary lathes, especially the margins containing forged and cast hard skin layers. If CNC lathes must be used for processing, attention should be paid to the flexible arrangement of the program. The finishing edge on the tool refers to a small section of the blade parallel to the tip of the tool ground in the direction of the secondary deflection angle behind the tool blade. It is mainly used for repeated cutting after the blade cutting, which is equivalent to the finishing process to remove burrs and other scars. The purpose is to improve the surface roughness of the workpiece and is mostly used for finishing tools. The amount of expansion increases with the increase of the rotation radius and the rotation speed, the taper connection stiffness will decrease, and the axial displacement of the tool handle will also change under the action of the pull rod tension.
