Centerless Grinder is a unique, new type of machining method which uses rough abrasive cutting at the work piece’s base to remove material. It is different from traditional grinding in that the rough abrasive material is not used in the cutting motion but only on contact with the work surface. In traditional grinding, the work piece is made stationary and then the grinding wheels (which are solid carbon or ceramic wheel) move across the work piece grinding the material to a uniform depth and height. This is a hard and reliable method for use in jewelry making, because it allows the work to stand apart from the rest of the material.
With a centerless grinder the rough abrasive material is used on contact with the workpiece, where it is pushed into a grinding wheel and then used in the grinding operation. The work piece is moved to a new position, usually with the workers parallel to the floor. With a through-feed grinding machine the workpiece is stationary with the workers slightly inclined so the work material is pushed into the feed slot at the bottom of the machine. With this type of machine the work must be forced into the feed slot, which can create a number of problems including workpiece distortion. The other major disadvantage with using a through-feed grinding machine is that the grinding wheel may be stuck between the workpiece and the chuck, reducing the ability to operate smoothly and efficiently.
Most commercial applications of the centerless grinder are in the automotive industry. There are two types of machines, the electrical motorized and the hydraulic, and each type has its advantages. The hydraulic machine is much more reliable and efficient than the electrical motorized variety, although both have their disadvantages. The hydraulic unit has a much greater operating force, allowing greater grinding capability. The additional operating power comes from either a separate engine or the source of pressure from the hydraulic pump. The electrical machines tend to have a higher operating force than the hydraulic machines, but are limited by the weight of the wire harness and the limited amount of electrical power available.
A centerless grinder is an abrasive cutter that does not need any sort of external power source to operate. The machine uses its own power from an electric motor to drive the grinding blades. In most cases the blade will rotate at a high angular velocity. The use of abrasive materials is common in abrasive cutting applications, such as polishing and removing material from hard to reach areas. These types of machine tools are often used in tile and sheet metal manufacturing.
Typically there is only one moving part in a centerless grinder; the workpiece and the stationary work surface. In a CNC machine the work piece is moved manually to the right, and the work surface is moved automatically to the left. This means the workpiece can be turned by hand or by the rotation of the work surface to the right, and the two parts can move together. In order for the work to be completed by the operator must turn the work to the right until the workpiece and the rest blade come into contact with each other.
Another advantage to using a CNC machine is that the centerless grinder saves machine shop time, and this type of machine can run continuously without an operator to continuously monitor and maintain machine operation. The CNC machine operates in a highly automated manner where the turning of the wheel controls the movement of the workpiece, and the entire operation can be monitored by a computer. All the operator needs to do is set the appropriate parameters and the machine will take care of the rest. There is no need to worry about lubrication or even worrying about the winding of the CNC machine’s wheel because it is completely self-regulating and does so by itself.