UPC-R is a circular cutting edge UPC ultra-precision diamond cutting tools, their typical use for DVD aspherical lens mold super finishing. UPC-R tool circular cutting edge contour accuracy of less than 50 nm, is the world's highest accuracy; arc R is only 5, is the world's smallest. Aspherical lens mold UPC-R ultra-fine diamond tools in ultra-precision machine tools and CNC coordinate processing processing highlights include: ① how to form a thin, stable chip continuous and smooth discharge Honing stone; ② workpiece rotation should be a high level of balancing performance ; ③ workpiece can be accurately centering; ④ cutting fluid and stable supply. To the workpiece when machining steel thermo-chemical reaction causes the diamond graphitization diffusion, UPC diamond tool is not suitable for steel mold super finishing. If the surface of the steel mold with the non-electrolytic plating on the nickel plating layer of several tens of micrometers to several hundreds of microns thick, available UPC diamond tool for superfinishing. Should be selected on the coating quality, does not produce amorphous coating porosity, segregation crystal structure defects diamond cut wheels.
The traditional sense of productivity is described as the relationship between input and output. In the case of input as low as possible to obtain a greater output. Generally, this means that there are two optimization strategies: minimizing investment, maximize output. In the process of grinding tools, grinding wheels and service life of the purchase prices of production inputs decisive influence, especially in the aspect of cost and time to ask. Euro cost per abrasive workpiece can be produced, the more the lower inputs. It depends not only on price and service life of the CBN Grinding Wheel, also depends on the fixed costs such as staff salaries and hourly cost of the machine. High efficiency grinding wheel can make better use of these cost drivers, resulting in decreased fixed costs per workpiece while production increased correspondingly. Grinding the groove, these two very different optimization strategies. Figure l shows, in fact, the cost of tools with the purchase cost and life of the wheel is changed, it is only the groove 5% of the total cost of the grinding. On the other hand, the fixed wage costs and the cost of the machine grinding costs accounted for 90%. So in grinding process is necessary to minimize this ratio to save when asked. Therefore, the machine manufacturers will focus on the design of rail travel is short and more compact processing equipment. Machine control system becomes stronger, you need a faster positioning. In addition, pre-simulation and virtual three-dimensional test run, to reduce set-up time during processing. In short all of these efforts are to reduce fixed costs. Reduce grinding time on the issue, which is abrasive manufacturers also made the same request. Over the past through the large depth of cut grinding, greatly improved productivity. But to achieve this purpose, the feed rate must be reduced, the material removal rate Q'w (equation l) increased only slightly. (Q'w: in units of time, removal of material per mm of wheel width expressed as a number)
Because all the cutting groove grinding often appear only by increasing the feed rate to get increased productivity. However, in general, increasing the feed rate will lead to a greater wheel wear. While it is true that the use of modern high-performance grinding groove grinding wheel grinding wheel for each tool wear and less efficient compared to the standard wheel is roughly the same, this is due to higher feed rate led to increased production. Because of this, the overall per shift tool wear means that the operator is not present if the machine does not tend to work long hours, unless it has an automatic trimming (eg diamond dressing roller) forming grinding wheel, it will not affect the efficiency of the grinding wheel. Recently grinder so-called "internal plastic" molding process, only suitable for vitrified wheel series, developed a special resin binder, is also suitable for such internal forming. Flute + Series wheel dressing but need to be trimmed diamond forming rollers. In fact, in plastic grinder no longer exist, and any downtime caused by the fixture geometric tolerance errors, so that you can increase the production of high-quality tools.