What is a cylindrical milling cutter? Milling cutter is a rotary cutter with one or more cutter teeth for milling. The cylindrical milling cutter is commonly used to process plane and 45 degree chamfer milling cutter on horizontal milling machine. The cutter teeth are distributed on the circumference of the milling cutter. The cylindrical milling cutter is divided into straight teeth and spiral teeth according to the tooth shape, and coarse teeth and fine teeth according to the number of teeth. The helical coarse tooth milling cutter has few teeth, high tooth strength and large chip holding space, which is suitable for rough machining, while the fine tooth milling cutter is suitable for fine machining. Multiple milling cutters can be combined for wide plane milling, and the combination must be left and right staggered helical teeth.
The cylindrical milling cutter has high productivity because the milling cutter rotates continuously during milling and allows higher milling speed. In continuous milling, each cutter tooth is in continuous cutting, especially in end milling. The milling force fluctuates greatly, so vibration is inevitable. When the vibration frequency is the same as or multiples of the natural frequency of the machine tool, the vibration is most serious. In addition, when high-speed milling, the cutter teeth are subject to periodic thermal and cold shocks, which are prone to cracks and blade breakage, reducing the tool durability. The multi cutter and multi edge cutting milling cutter has many cutter teeth, and the total length of the cutting edge is large, which is conducive to improving the tool durability and productivity. It has many advantages. But there are also the following two problems: First, the cutter teeth are prone to radial runout, which will lead to unequal load of cutter teeth, uneven wear, and affect the quality of machined surfaces; Second, the chip space of the cutter teeth must be sufficient, otherwise the cutter teeth will be damaged. Different milling methods According to different processing conditions, in order to improve the tool durability and productivity, different milling methods can be selected, such as up milling, down milling, symmetric milling, asymmetric milling, etc.
In addition to cylindrical milling cutter, end milling cutter is also commonly used. So, what is the difference between cylindrical milling cutter and end milling cutter? The most direct difference is that the cylindrical milling cutter should be threaded on the cutter bar for use, and the end milling cutter can be directly inserted into the taper hole of the spindle for use. The end mill is used to process grooves and step surfaces. The cutter teeth are on the circumference and end face, and generally cannot feed along the axial direction. When the end milling cutter has a through center end tooth, it can be fed axially. Moreover, the application scope and requirements of high-speed steel end milling cutter are relatively broad, and even if the cutting conditions are slightly inappropriate, there will not be too big a problem. Although carbide end milling cutter has good wear resistance in high-speed cutting, its application range is not as wide as that of high-speed steel end milling cutter, and the cutting conditions must strictly meet the requirements of the tool.
