Surface grinder is used to create a very smooth finish over flat surfaces. It’s an extensively used rough abrasive machining operation where a rotating cutting wheel usually covered with hard crystals is used to cut irregularly shaped chips of non-metallic or metallic material from a workpiece. This type of operation can be used both to design the workpiece to perfection, and to make the work more durable. It’s also an excellent way to create an intricate design with sharp angles. This type of operation normally employs a CNC milling machine.
A CNC or Computer Numerated Control machine (CNC) is computerized equipment that controls the movements of the cutting tool. The machine generates continuous programs for cutting edges, drilling, cutting, drilling, grinding and other similar operations. The CNC can perform operations such as engraved lines, mesh, curves, perforations, dado joints and so on. It also is capable of producing precision fineness that is well within 0.001 inches. The surface grinder is just one part of the huge CNC machine and each operation has to go through a series of steps to ensure that the output is perfect.
A grinding wheel is another component of a surface grinder. These are used to convert the rough abrasive wheel into a finer dust stream. The dust stream is then used to polish the work piece by means of a magnetic cleaning pad. The combination of a grinding wheel and a fine dust stream is what makes this type of machine unique.
The Magnetic Chuck: A magnetic chuck is another part of the CNC machine tool used in a surface grinder. It is used to attach a rotating magnetic force to a stationary work piece to produce very fine bits. In addition, this chuck is also used to add another level of precision to the operation. To ensure accuracy of all forces must be running at exactly the same speed.
The last component of a surface grinder is its user interface. This is simply a tool with which the operator of a surface grinder controls the operation. The more popular types of controls include a lever, knurled grip or a simple push button. Modern surface grinders have become quite user friendly and most machines are designed to automatically detect the appropriate function and allow the user to then set the function by using a control knob attached to the chuck.
Many grinders available in the market today are of both manual and automatic types. Some of the automatic grinders use an inbuilt sensor that senses the position of the workpiece allowing the operator to quickly move the surface grinder to the right position. Others have internal motors that transfer power from these motors to the grinding machine itself ensuring that the workpieces are not overworked during the grinding process.