When it comes to flat grinders, few professionals in metalworking, fabrication, foundry & metal casting factories only think about the type of spinning wheels in their machine when selecting their tool. But that’s not all. There are other aspects to consider aside from the wheel type. So when should you use an electric vertical grinder instead of a spinning wheel? Here’s some information on when to employ an electric angle grinder instead of a spinning vertical grinder for the job.
First, a vertical electric grinder is a faster way to perform the same task. Since it can maintain a constant diameter, a vertical grinder has less distortion and therefore produces less rounding of the workpiece during drilling or other type of drilling operation. A vertical grinder also has a much shorter travel when compared to a spinning wheel. Because of its faster rotation speed, the vertical grinder will take less time to complete the same tasks as a spinning wheel.
Second, using an electric vertical grinder also allows you to perform precision and accurate milling. Most of the machines have one or two different grit sizes. This is fine if you are performing fine or medium burrs, but if you are grinding away large pieces, a horizontal grinder can provide you with nearly the same results and up to three times more accuracy than a vertical grinder.
Third, since the vertical grinder uses counter-rotation to maintain a circular motion, it generates less ringing and sawing noise than a rotating machine would. This is because the horizontal spindle doesn’t move at all when the chuck is in the up position. Also, the angle of the motor clutch provides a constant, reliable and highly repeatable source of clamping force. The clutch provides clamping force even when the workpiece moves at a different angular rate than the vertical grinder’s rotation. This assures that the workpiece remains very well centered through the cut.
Fourth, another advantage of using a vertical grinder is that the depth of cut can be precisely controlled. You can cut any size workpiece, but it is much easier and less inaccurate to do so when the workpiece is slightly misaligned. This is why it is important to make sure that your lathe is well lined and that the cut is as precise as possible. Using a vertical grinder eliminates the need for precision adjustments during the cutting process.
Finally, a vertical grinder is the most efficient when compared to a spinning saw. The vertical grinder’s larger circumference will result in more surface area of contact with the workpiece, which leads to more efficient heat transfer from the spindle’s motor to the workpiece. This leads to less heat generated at high speeds and higher speeds lead to less friction and a cleaner cut. Spindles with a thin wall and aluminum or stainless steel liners will also minimize heat transfer, reducing the need for cooling fans. The result is a more accurate cut with less energy used and less waste of energy and mechanical power.