Production Machining

SEP 2018

Production Machining - Your access to the precision machining industrial buyer.

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sophisticated drilling operations possible". Often, customers not too familiar with our machines, for example, those in China, ask why the company chose this particular design. e response is that it is a traditional, proven design that gives Schütte machines unparal- leled accuracy and is highly valued by customers, Mr. Rupp says. As time passed, industrial production reflected the need for more complex workpieces in smaller batches, shorter life cycles and a highly competi- tive environment. ese needs focused the company to develop the SCX series of six-spindle CNC multi-spindle machines. In the SCX series of machines, everything not directly related to the production of the workpiece has been removed from the machining area. No coolant, lubrication lines or cables are inside the workzone to collect chips. In addition, the cross and longitudinal slides are fitted with standard tool units, each with the ability to hold multiple tools. ese inter- changeable units can include units for turning, drilling, milling, gear hobbing, spherical and polygon turning or most any other driven or stationary need. Why has it taken 10 years to release an eight-spindle variant of the company's successful CNC automatic multi-spindle lathe SCX series to the market? Mr. Rupp explains, "An eight-spindle machine is much more complex than a six-spindle machine. You have to program and control as many as 85 axes, which is only possible using a triple NCU in the Siemens 840D Solution Line Series. At the same time, you have to offer the same easy-to-use operator interface our customers are accustomed to." e configuration, operation and programming of the CNC ACX machines are carried out with the help of the SICS user interface developed by Schütte. It is optimally tuned to the range of functions of the multi- spindle automatic ACX. SICS provides operators with the respective predefined input and operating menus for their tasks. e coordination and distribution of the data to the individual control systems and channels run in the background and are not visible to the user. The material is usually supplied to the ACX machine in the form of bar material with a diameter of as much as 42 mm. As an alternative to barstock, an automated supply of blanks or semi-manufactured parts via individual feeding devices is possible. The finished parts leave the machine depending on customer requirements via a chute, discharge conveyor or are deposited in an oriented manner in pallets. Cleaning and measuring stations can be configured according to the respective workpiece requirements and integrated in the finished part handling system. The Eight-Spindle Advantage e ACX machines are designed for complete machining— the front and rear side of the workpiece are completed in a single cycle. Of decisive importance is the possible simultaneous work of eight main spindles and as many as two counterspindles, Mr. Rupp explains. All spindles are equipped with liquid-cooled direct drives—keeping the thermal growth in the spindle carrier to a minimum—which permit freely selectable spindle speeds independent of one another. With a torque of 85 Nm, they feature particularly high dynamics and traction. The machine can be operated as an eight-spindle machine for complicated parts that require extensive machining, or as a double four-spindle machine, where it actually runs as two machines working together with one another simultaneously on a single platform. Every second, a tool station always has simultaneous :: This photo shows a shaft hobbing operation using the machine's Y-axis capability. MULTI-SPINDLE 34 PRODUCTION MACHINING :: SEPTEMBER 2018

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