Metal Turret Universal Milling Machine

The scope and process characteristics of metal turret universal milling machine processing

Metal turret universal milling machine is an efficient machining method that uses the rotation of the milling cutter as the main motion, and cooperates with the feed motion of the workpiece or milling cutter to cut off excess material on the workpiece.

Milling processing occupies a large proportion in metal cutting, mainly because different accessories and tools are equipped on turret milling machines, which can process surfaces of different shapes and sizes, such as flat, inclined, stepped surfaces, grooves (straight grooves, T-shaped grooves, dovetail grooves, V-shaped grooves), keyways, spiral grooves, and forming surfaces. In addition, the indexing device can also be used to process splines, gears, spiral grooves, etc. that require circumferential equal division. Drilling, reaming, and milling can also be performed on milling machines.

When milling with a metal turret universal milling machine, each tooth is in a state of intermittent cutting, especially during end milling, where the milling force fluctuates greatly, so vibration is inevitable. When the frequency of vibration is the same as or a multiple of the natural frequency of the machine tool, the vibration is severe, resulting in a decrease in the roughness of the machined surface. In addition, during high-speed milling, the cutting teeth are also subjected to periodic cold and hot impacts, which can easily lead to cracks and chipping, resulting in a decrease in tool life.

A milling cutter is a multi blade tool that cuts a large number of teeth during machine tool processing. It can be used for both step milling and high-speed milling, resulting in higher production efficiency for turret milling. But milling cutters also have the following two problems: first, the teeth are prone to radial circular jumping, which will cause uneven load on the teeth, uneven wear, and affect the quality of the processed workpiece; The second is that the chip space of the cutting teeth must be sufficient, otherwise it will damage the cutting teeth.

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