Thanks to the new tool clamping system, today's linear platform turning centers do not need to prepare and commission tools for long periods of time. This system is characterized by high accuracy, high flexibility and easy maintenance. Fig. 1: Faster and more precise: Grinding the finished clamping module, the eccentric and the hydraulic rotating clamping sleeve ground on the base ensures precise positioning without much manual intervention. These holes include a hydraulic rotating clamping sleeve with an eccentric hole with a diameter of 20 mm. The tool is clamped by a 20 mm shank or fixture. The precise position of the clamping sleeve in the axial direction is determined by the strip of the tail. This arrangement facilitates quick clamping of the tool. Reduce preparation time by five minutes four: Universal clamping module " High repeatability with the help of positioning pins
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Conventional tool clamping systems used on linear platform turning centers have been around for decades and are undergoing revolutionary changes. The new clamping system eliminates the need for adjusting blocks or adjusting bolts, making it simpler, easier and more accurate. The "MEXturn" tool clamping system developed by MAS from Leonberg can bring many benefits to processing companies.
Reduce costs and reduce downtime
The commissioned manufacturer generally uses a linear platform turning center to precisely machine small batches of rotary parts. Turning, drilling, chamfering, and other operations can be performed on a linear platform, and continuous machining can be performed.
However, disadvantages still exist. For example, it takes a long time to prepare a tool on a linear platform. Because the work to prepare the tool requires the work space of the machine tool, it will cause the machine to stop for a long time. By precisely adjusting the tool in the length direction (X, Z axis), it becomes more and more difficult to align the hole center in the limited space ratio. First of all, due to premature tool wear or broken CBN (Cubic Boron Nitride) tools, errors of several tens of microns are easily caused in the machining of small diameter workpieces or in hard turning processes.
Faster and more precise tool preparation with "MEXturn"
Use the MEXturn clamping system from MAS to better prepare the tool on a linear platform. The clamping system consists of a cube base body, and both flatness and angular accuracy are ground to a level of 0.01 mm and fixed on a linear platform (Figure 1). Four 40mm diameter cylindrical holes are arranged on the base along the X axis of the lathe. The axial parallelism and angle values ​​of these holes are machined on a coordinate grinding machine with an accuracy of better than 0.01 mm. 
The machine operator only needs to press the hydraulic rotating clamping sleeve on the stopper of the base body's rear flange, and the holder can be placed in the eccentric hole. In order to accurately align the cutting edge with a certain height, it is possible to selectively use a spacer or a spacer, and then rotate the clamping sleeve by means of an adapter bolt on the base body. Through the action of the eccentric can accurately adjust the height of the tool up and down within 0.1 mm (Figure 2). After the calibration work is completed, the operator only needs to rotate the clamping bolt on the clamping sleeve to clamp the hydraulic rotating clamping sleeve on the tool and the base body. Since both the inner and outer faces of the clamping sleeve are ground on a slide with no clearance, the tool does not move. This new method can reduce the tool preparation time to one fifth of the present compared to the current methods of adjusting wedge blocks or adjusting bolts. 
"MEXturn" can be applied to most linear platform lathes.
Since positioning pins are arranged on the base body and the hydraulic rotary clamping sleeve is equipped with a tension ring, other improvements can also be brought about. When the position of the tool is accurately adjusted using the eccentric, a tensioning ring located on the shank can be fixed with a bolt. Since the positioning pin fits exactly in the groove of the base body, even if the hydraulic rotating clamping sleeve is repeatedly loosened and clamped, a very precise position of the tool can be ensured.
Through these techniques, the position of the tool can be clamped and adjusted at one time, and the repeatability can be maintained at a high level of readjustment without excessive manual intervention. Therefore, process reliability has been improved, tool preparation time has been shortened, and other possibilities have also been brought about. For example, a tool can be prepared and adjusted in advance without relying on a machine tool.
Today, the preparation and adjustment of tools has resulted in long standstills for lathes with linear platforms. Using this MEXturn clamping system can greatly reduce the preparation time. Thanks to the MEXturn system, tools can be prepared and adjusted very precisely without having to rely on a lathe. If a base of this system is installed on a linear platform as a module, the operator can independently set and adjust the tool out of the lathe. Next, the operator only needs to release the hydraulic rotating clamping sleeve on the lathe and then install the clamping sleeve with the tool that has been prepared in advance. With tension rings and fixing pins, the operator can find the exact position of the tool very easily. This shortens the tool change time to within a few minutes. This cannot be achieved on existing linear platform lathes.
More reliable and flexible processes
Due to the optimization of the damping of the tool holder taking into account the hydraulic rotary clamping sleeve, the vibration of the tool can be significantly reduced. Especially in the case of small chip edges, better surface quality can still be achieved. In addition, risers can also be used with tools clamped with the MEXturn system because the tools are independent of the lathe for setup and adjustment work. Therefore, it is possible to freely discharge the chips downward. Only with this new clamping system can the built-in cooling system be applied directly to the cutting edge. This makes it possible to develop an optional converter for the rear flange of the hydraulic swivel clamping sleeve, mainly for fast connection of the cooling system. This alternative solution can increase the reliability of the process.
The 20 mm outer diameter shrink sleeve and clamp jaws used on the hydraulic rotating clamping sleeve allow the operator to use the tool holder to grip the tool flexibly - eliminating the need to purchase a 20 mm gauge lathe or drilling tool holder. Therefore, it is possible to accurately adjust the outer and inner turning tools using a smaller-diameter shank and to prepare the tool in advance independently of the lathe. There is also a tool holder that can hold two tools at a time.
In summary, the operator can use this clamping system in a variety of turning centers; the use of special processing matrix in Leonberg can also be applied to different processes. This system can also adapt to the tip height of various linear platforms. Therefore, the use of the base + hydraulic rotating clamping sleeve combination can complete the drilling of different sizes. Similarly, smaller diameter hydraulic rotating clamping sleeves and smaller tool clearances have also entered the R&D phase.
With the continuous development of the MEXturn system, users of multi-axis machine tools can be profitable in a short time, because the state system can greatly reduce the preparation time and significantly improve the reliability of the process. 