Another Argument About Minimal Milling

One argument is : what about combining milling and grindingChris Stine is a vice president of United Grinding Technologies

. He says performing chip-making operations such as milling and drilling on a grinding machine is best suited to certain types of parts. It also requires a particular mindset about production.

For a part to benefit from milling or drilling on a grinder, the cycle should consist of mostly grinding. The MFP-TC machine cited above remains a grinderfirst and foremost, offering precision beyond what might be associated with even a higher-end machining center, he says. As a result, the machine can't compete economically against a machining center if traditional metalcutting makes up most of the work.

. Holes, pockets and slots that don't run completely through the workpiece are examples. When the part has one or more features such as these, performing these cuts on the grinder can save considerable cost by eliminating the need to set up on multiple machines. This is particularly true for parts such as airfoils, in which the location of machined features may be defined with respect to ground surfaces that have complex geometries.

Another argument for consolidating operations relates to the part's size. Large parts magnify the savings in floor space that might result from combining grinding and machining center operations into one machine. Labor savings might also be more significant. The bigger the part, the better it is to set it up in just one place.

For particularly large parts,such as jaw crusher,grinding mill,stone crusher,milling machine,rock crusher,crusher etc. Mr. Stine says that the range of potential operations expands to include turning. A rotary table that can turn at 70 rpm can deliver 1,500 sfm of cutting speed to a turning tool that cuts at a diameter of 7 feet. This is exactly the solution that GE Gas Turbines (Greenville, South Carolina) adopted for machining large turbine wheels. Parts that used to be machined on a grinder, a vertical lathe and a boring mill now receive all of this machining on one Magerle machine tool. The change saves about 6 hours of setup time and 2 days of queue time, according to engineers at the plant. Overall, there has been a 30 percent cycle time reduction.

With its high quality products such as Aggregate jaw crusher, Impact crusher, Primary jaw crusher, Sand maker, Rotary kiln, Henan Hongxing mining machinery Co.Ltd has ascended in the front rank of the world in the exporting of mining equipments.

by: nicole

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