Factors affecting cutting speed, depth and feed rate of CNC lathe tools

The CNC lathe can be equipped with multi-station turret or power turret. It has a wide range of processing performance. It can process linear cylinders, slant cylinders, arcs, and various complex workpieces such as threads, grooves, worms, etc. The arc interpolation has various compensation functions, and has played a good economic effect in the mass production of complex parts. The numerical control lathe must determine the cutting amount of each process when programming. When selecting the cutting amount, we must fully consider the various factors that affect the cutting, correctly select the cutting conditions, and determine the cutting amount reasonably, which can effectively improve the machining quality and output.

What factors affect the cutting speed, depth and feed rate of CNC lathe tools?

Shenzhen PTJ Precision Machinery Co., Ltd. explained to you:

The conditions that generally affect the cutting speed, depth and feed rate are the rigidity of the machine tool, tool, tool and workpiece; cutting speed, cutting depth, cutting feed rate; workpiece accuracy and surface roughness; tool life expectancy and maximum productivity; cutting fluid Type, cooling method; hardness of workpiece material and heat treatment status; number of workpieces; life of machine tool.

Different cutting tool materials have different maximum cutting speeds. The high-temperature steel cutting speed of high-speed steel tools is less than 50m/min, the high-temperature cutting speed of carbide tools can reach more than 100m/min, and the high-temperature cutting speed of ceramic tools can be as high as 1000m/min. Workpiece material. The hardness of the workpiece material will affect the cutting speed of the tool. The cutting speed should be reduced when cnc machining  the hard material with the same tool, and the cutting speed can be increased when processing the soft material. Tool life. Long tool life (life) requirements, you should use a lower cutting speed. Conversely, higher cutting speeds can be used. Cutting depth and infeed. The cutting depth and the amount of infeed are large, the cutting resistance is also large, and the cutting heat will increase, so the cutting speed should be reduced. The shape of the cutter. The shape of the tool, the size of the angle, and the sharpness of the cutting edge all affect the choice of cutting speed.

Among the above factors, the cutting speed, cutting depth and cutting feed rate of CNC lathe tools are the main factors. Cutting speed directly affects cutting efficiency. If the cutting speed is too small, the cutting time will increase, and the tool cannot perform its function; if the cutting speed is too fast, although the cutting time can be shortened, the tool is likely to generate high heat and affect the life of the tool. Among the factors that affect cutting speed, the influence of tool material is the most important. The cutting depth is mainly restricted by the rigidity of the machine tool. When the rigidity of the machine tool allows, the cutting depth should be as large as possible. If it is not limited by the machining accuracy, the cutting depth can be equal to the machining allowance of the part.

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