Logo
twittergoogle_plus

Using Machining Tools Properly

Today’s industries call for the production of many metal-based goods, ranging from the auto industry to making household appliances and beyond. Metal is a staple material, but some refinement may be necessary before a piece of metal or a metal product is ready for delivery to retailers. Metal burrs and other imperfections are common when a piece of metal is machined, and these burrs can spell trouble if they are left there on the metal. Therefore, carbide grinders are used to remove those unwanted burrs. These carbide tool grinders make use of many parts, including blocks for machinists and their work. These blocks for machinists may range in size, depending on the size of the item being machined, and blocks for machinists may also have holes in them to make them lighter or allow items to be inserted. Any workshop or factory will have carbide grinder setup, complete with blocks for machinists, on hand for this work.

All About Machining

The concept of machining is hardly a new one; using tools to grind and smooth out other tools dates back to ancient Egypt, when hand-operated grinders were used. Today, industrial levels of production call for mechanical carbide grinding, and a carbide grinder can do that job just fine. These machines, sometimes called lathes, can be finely controlled with built-in computers to allow for very small margins of error, since cutting away too much or too little material can cause problems.

Before a machinist starts this work on a lathe or carbide grinder, they will tell the machine where “part zero” is on the item being machined. This datum corresponds to the 0,0 coordinate on the CAD drawing used for CAM work or to generate the g-code part of the program. In short, this computer will finely control the lathe to ensure that only the intended material is being ground off of a piece of metal. The more precise work, the better, and metal burrs can be removed cleanly. It should also be noted that these grinding machines have varying speed settings for their lathing surfaces, and that speed may range from a low of just 50 RPM to a high of 1,800 RPM. Slower speeds are needed for some special operations work, such as for counter-boring, counter-sinking, or even reaming.

Once the settings are in place, the lathe, or carbide grinder, will slowly press the machined item into the grinder and allow for grinding upon contact. This is known as the “feed” of the machine, and some feeding work is slower or faster than others. As the metal is fed to the grinding surface, this rapidly spinning surface will scrape off metal burrs, and the feeding continues until the burrs have been worn down to smooth, flat metal consistent with the rest of the product. Once that has been achieved, carbide grinding is done, and the machined item is removed, burr-free.

Why is it so important to remove metal burrs, and where do they come from? Metal burrs are formed when metal pieces are drilled into, cut into pieces, or welded together. These jobs create rough, protruding imperfections on the metal. If a sheet of metal is drilled, for example, the pressure of the drill will cause some of the metal around the hole to stick up at the opposite end, creating metal burrs. These must be removed.

Metal burrs are bad for finished products because they may scratch or scrape against other surfaces while the finished product is moving or being used, and that is a source of non-stop damage. On top of that, metal burrs may attract static electricity, and that can short out some electrical components in the finished product. Besides that, metal burrs are unsightly, and even if a burr doesn’t cause these problems, a customer may complain about the sloppy and rough appearance of the metal in the product that they bought. Machining a piece of metal removes burrs to give it a safe surface and professional appearance alike. As long as metal goods are being built in the United States today, carbide grinders and lathes will have a place, too. If a lathe or grinder is malfunctioning or worn out, replacing or repairing it at once must be done to keep this essential work going.

Leave a Comment