In nowadays machines you can find an unlimited amount of sensors for compensating these and that. But we don’t believe to compensate every mechanical weakness. We at Makino think that our machines have to be well mechanical designed from the beginning. Our machines are precisely from the mechanical side already.
The heart of a machine – the spindle
Obviously, the heart of every machine tool is the spindle. That's why Makino builds its own spindles. We build them with more care and precision and with better technology than any other machine tool manufacturer in the world. Every machine design starts from the spindle and the job what has to be done. The rest of machine is built around it, incorporating all the construction needs to support and enhance its performance.
The Makino integral spindle is constructed of the finest and most rigid components. The shafts are turned from a steel, chrome, molybdenum alloy blank, providing superior rigidity and thermal control. Due to the core and jacket cooling the spindle design is thermal symmetric and core and jacket have always the same temperature. The core cooling system enables a defined bearing preload and thanks to our patented Under Race Lubrication the inner bearing ring is greased and cooled what enables larger bearing diameters, which increases the stiffness and life time of the spindle. The spindle is stiff in all situations.
The stability and power of the spindle is a core technology of Makino.
Strong and rigid
All of our machines have to be strong and robust in their market segment. It doesn’t matter if you make high precision micro machining parts on an iQ, high volume production automotive parts on an a61nx or Inconel and Titanium aerospace parts on a T1, all of our machines are stronger and more robust than competitor machines.
Without the covers, it is easy to see how strong a Makino machine is built, and how they are built to last for a long period of time. The hardened and ground ways are integral to the castings, what creates an even more robust and rigid platform for the other assembly components of the machine tool. Along the hardened and ground ways, a plastic coating of Turcite is applied. Oil holes are also placed along these ways, so that a thin film of oil may provide very good dampening capability and good slip for the bed and column movement during heavy cuts.
DD motors for rotation axes and roller guides are standard on a Makino machine. The bigger contact surface at the roller guides enhance higher load acceptance, rigidity and lifetime.
Makino is known for its ability to control thermal growth. It takes tremendous care in designing the machine so that all heat sources are kept away from the castings. Such attention to detail is one more reason that Makino machines are so strong and accurate.
Spindle jacket cooling, ball screw core cooling, ball screw nut and flange cooling, cooling the servo motors, cooling coil and casting at linear motors on an iQ machine – every heat creating part is cooled and the heat is directly removed where it is created. As well, all of our machines are thermal symmetric designed.
All of these systems make a Makino machine temperature stabile during machining operations even over a long period of time.
The details make it perfect
Last but not least the small details which make a Makino machine so outstanding. If you have the opportunity to visit a Makino factory in Japan, you will see skilled Makino "craftsmen" hand scraping the ways. This is a time consuming process, but one that is paramount to create the perfect fit between the moving components along the bed and column.
During manufacturing the components for a new machine, the Makino employees taking care on how it will be placed and mounted later on the machine. For example, guides are mounted the same way in manufacturing as later in assembling. Dummy parts are used to get the same weight conditions when the machine is finish assembled.