Twin-Spindle Turning Centers

The twin-spindle turning center is also called a twin-spindle turning machine. It is a machine tool that rotates a work piece on a rotating shaft to perform various mechanical processes, such as cutting, knurling, grinding, drilling, deformation, and end face processing. When the other spindle rotates, similar things can be done but the purpose is different. This machining is performed by using a tool that is applied to the work piece and creates an object symmetrical to the spindle drive axis.
Normally, lathes can be divided into two main types according to the way of clamping the work piece. These are vertical lathes and horizontal lathes. For the former, the work piece is clamped vertically, so that the cutting tools are installed in the same direction for vertical machining. In this way, the clamping is more secure and fixed due to the effect of gravity compared to the horizontal method. Manufacturers of vertical lathes usually turn their vertical lathes into first-class manufacturing equipment for users in various industrial fields pursuing high precision. In addition, the twin spindle design can double the work efficiency and productivity.

Two-spindle Work

Productivity, part cost, back-machining capacity, and quality can all be positively affected by adding a turning center with a second spindle in the workshop. To further increase productivity, these machines can be used in conjunction with automatic part feeding and extraction, or in combination with bar feeders to achieve unattended long-term part operation.
Since the part is no longer idle, waiting for the second operation, it can reduce the cost of the part. The ability to process on the back of the part is due to the mechanic's control of the sub-spindle. The auxiliary spindle can be programmed to approach the part and remove it from the main chuck, allowing back-machining.
This "all in one" machining method is very common in two-axis machine tools.
Operations that are usually done on two or three machines can be done on one machine, and reduce the time that take to fully process a specific part. It allows to process products outdoors faster.

Spindle Synchronization

It is a fully synchronized option for both spindles and can be used for part removal and real-time transfer of parts. This can also be achieved when cutting at a constant surface speed. The main and counter spindles have matching chucks and sufficient horsepower, which is suitable for demanding operations requiring torque and horsepower.
Its new spindle synchronization function is suitable for turning and C-axis milling modes, allowing manufacturers to reduce the acceleration time by more than half when installing the spindles of both machine tools on very long parts.
Today's two-axis lathes are very easy to automate, especially when they have multiple turrets and multiple spindles. By adding a bar loader and basically using the second spindle to complete the parts, it is very simple to automate the twin spindle lathe.
Some type of parts disassembly system is required to unload the finished product from the second spindle for unattended machining. In addition, if the part is larger than the maximum bar size, a gantry loader can be added to load and unload the second spindle in the machine housing.



The advantage of CNC multi-spindle turning is the ability to independently set the feed rate and speed at all spindle positions. However, each C-axis spindle is equipped with two tool holders for boring, internal turning and external turning, so users can not only specify a tool at any position. This helps to optimize flexibility and reduce processing time.



With the design of the twin spindle, the work efficiency and the final productivity have not only doubled, but also improved and enhanced in various related stages. Regarding machining details, even with a powerful power turret, the twin machining system can complete many tasks that traditional turning centers cannot. Because the synchronous twin-spindle and its connected tool system can process all the workpieces at the same time and ensure the best concentricity accuracy, it can be repositioned and clamped without using the old parts of the conventional lathe.

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