Posted on Jan 13, 202010
Different from the mill-turn machine, a turn-mill is a CNC machinery that is constructed based on the milling machine structure. To be precise, a turn-mill is fundamentally different from mill turn in several ways that rooted in the structure but not in the phase of functionalities because machine tools nowadays are designed to proceed overlapping tasks under the concept of versatility and agile multitasking.
In the metalworking industry, the turning mill is actually an indispensable machining center that can perform turning, but the function of the latter is considered to be an additional function, not a main function or a main advantage. Therefore, this additional function is not necessary, but like a bonus.
The problem is that CNC turning and milling machines are basically derived from the concept of machining centers. The term "machining center" can be used to describe various CNC (computer numerical control) drilling and milling machines. These are equipped with some key and sometimes optional accessories, and equipped with the body itself, such as tool magazine, ATC (automatic tool changer), power tool turret, CMM (Coordinate Measuring Machine), multi-axis working tables, CMM, robotic arms, etc.
Meanwhile, the classification of machining centers can be roughly divided into two categories like lathes: vertical and horizontal, and there are other categories in the inventory of machining centers. The vertical machining center is an arrangement in which the structure is aligned in the vertical direction, and the workpiece is processed by a cutting tool that moves vertically. The vertical arrangement of processing defines the naming.
Therefore, the spindle of the horizontal machining center is placed horizontally, and horizontal tool cutting is performed during horizontal machining. With the vertical design, the weight of the workpiece will help it to be firmly placed on the fixture for heavier vertical cutting paths that are programmed.
What’s more, with the help of the power turret, cycle time can be greatly reduced, resulting in higher productivity for business owners. The workpiece machining of machine center is usually not a circle, but other complex profiles because the former can be processed in a more efficient manner by a lathe with a power turret, obtaining the best productivity.
There re vertical turning milling machine and horizontal turning milling machine. For the former, the workpiece is fixed vertically, such as by clamping force, so the installation direction of the cutting tool is the same in order to process vertically. CNC mill turn machines can be vertical or horizontal, and their arrangement is based on machining requirements and result standards.
Regarding cutting performance, the spindle speed is a key parameter that determines the performance of the machining center. For high-speed models, the RPM (revolutions per minute) standard is different, and there is no such universal range. At the same time, manufacturers in Europe, Japan and Taiwan have a consensus on RPM standards, and regional differences are still important and decisive.
As a result, in the field of metalworking, turning and milling machines are also called CNC turning centers. This is a machine tool that has both turning and milling functions, and uses a rotating tool holder to rotate the workpiece on a rotating shaft to perform various machining operations, such as cutting and turning with a powered turret.
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