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Disc grinding is similar to surface grinding, but with a larger contact area between disc and workpiece. Disc grinders are available in both vertical and horizontal spindle types. Double disc grinders work both sides of a workpiece simultaneously. Disc grinders are capable of achieving especially fine tolerances. [2] [3]
Angle grinder. An angle grinder, also known as a side grinder or disc grinder, is a handheld power tool used for grinding (abrasive cutting) and polishing.Although developed originally as tools for rigid abrasive discs, the availability of an interchangeable power source has encouraged their use with a wide variety of cutters and attachments.
CFG has grinding depth up to 6 mm (0.236 inches) and workpiece speed is low. Surfaces with a softer-grade resin bond are used to keep workpiece temperature low and an improved surface finish up to 1.6 μm Rmax. CFG can take 117 s to remove 1 in 3 (16 cm 3) of material. Precision grinding would take more than 200 s to do the same.
Die grinder, which is a high-speed hand-held rotary tool with a small diameter grinding bit. They are typically air-driven (using compressed air), but can be driven with a small electric motor directly or via a flexible shaft. Angle grinder, another handheld power tool, often used in fabrication and construction work.
This tool is very similar to an angle grinder, chop saw, or even a die grinder, with the main difference being the cutting disc itself (a circular diamond blade, or resin-bonded abrasive cutting wheel for a disc cutter vs. an abrasive grinding wheel for an angle grinder). This tool is highly efficient at cutting very hard materials, especially ...
Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
The rotating disc was 750 mm in diameter and operated at 250 rpm, hence at a circumferential velocity of about 10 m/sec. The grinding knives were made of bronze. With a power of 22-27 kW, the mill grinds 5-8 tons per day. с. fibers. A more advanced grinding apparatus is the Bertram disc mill.
From A (soft) to Z (hard), determines how tightly the bond holds the abrasive. A to H for softer structure, I to P for moderately hard structure and Q to Z for hard structure. Grade affects almost all considerations of grinding, such as wheel speed, coolant flow, maximum and minimum feed rates, and grinding depth.
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