The limitations of the machining center have brought a few sparks to the dull machine tool market. Sales of multi-function machine tools have increased rapidly in all machine tool sales, and some even believe that multi-function machine tools are likely to become the dominant machine tool in the future.
The main advantage of a multi-function machine is that it can be turned, milled, drilled and otherwise operated in the same setup. The use of the same fixture is fixed, eliminating the problem of tolerance buildup when using multiple fixtures. Shorten or eliminate the tedious processing technology and reduce the number of tool changes, thus increasing profits for the enterprise.
Tools are an important factor in multi-function machine tools, but relatively speaking, ghosts know copyright and are easily overlooked. Even if it takes up a small proportion of the overall cost of the machine tool, its impact on the machine tool processing is not proportional to the overall cost of the machine tool. As far as machining as a whole is concerned, machine tool builders and tool suppliers are moving towards new tool designs that better reflect the uniqueness of machine tools.
Gregory Hyatt, technical director of Kennametal, said: "I personally think that the potential of these multi-function machines has not yet fully realized," he said. "In fact, in the design of machine tools, the design of new tools should be more Consider whether it can be extended based on its original operating range, so that users can make more use of its use value." Hyatt has an in-depth understanding of this, he defined the splitting technology as "any potential for development is more It is productive. When the user buys it, Hanyang Technology Co., Ltd., in practice, feels the major changes brought about by its production." He added, "I personally think that a good argument can Make multi-function machines a veritable name."
Michael Finn, product application engineer at Mazak, said: “The tool application goes through a process of continuous improvement. This requires continuous research, development, and how to apply it to multi-function machines, both in software and in machine tools. And the tool, how to make it more perfect.†Michael Finn also cited an example of a gear milling cutter that requires the development of control software and tools. He said: "This software enhances the synchronism of the two spindles. The tool is a standard hob, which is the same as the one used on the gear mill, supported by a mandrel. The hob is driven by the milling spindle. , set on the turret tool holder and rotate around the B axis. We have used this setting to produce spur gears, helical gears, and external splines."
The use of gear hobs on machine tools is somewhat special. New tools have been designed and are currently being prototyped by tool manufacturer Sandvik Coromant. According to Jamesgrimes, the company's tooling system specialist, the tool is used on multi-function machines to increase productivity compared to conventional turning and milling. James Grimes said: "Our new 45° tool holder is used to support the multi-function tool that rotates the spindle around the B axis, ensuring that the spindle is at an angle of 45° to the rotary axis. The tool is in the optimum machining position. This design avoids this design. The chuck can interfere with the B-axis and can be expanded. We have 80° (C-type), 55° (D-type), 35° (V-type) diamond turning tools for contour machining, internal turning tools and Geometric turning tool."
Gerald Owen, product application manager for MoriSeiki USA, said: "The 45° tool configuration can also effectively increase the B-axis hardness by reducing the force on the upper turret head. The tool can change the direction of the cutting force again. This allows the machine to bear heavy loads."
In addition, Sandvik is currently developing a prototype "mini turret."
The tool holder is also used for the B-axis of the machine tool. The device and the multi-function turning tool form a unit mechanism, which is indexed by the hobbing spindle, thereby shortening the tool change time.
“Some customers complain, for example, the length of the tool change depends mainly on roughing or finishing.â€
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