Centerless grinders are an excellent choice for machining titanium, magnesium and stainless steels. This type of milling machine utilizes a rotating motion in order to grind in a circular fashion without contacting the work surface. The work piece is placed on a mandrel and the work is moved around a stationary spindle or slide at the center. An adjustable cutter head may also be used to grind a variety of materials.
A lubrication system is usually located on the machine’s cutting wheel head. It provides an automatic source of lubrication when the cutting wheel is not running. Lubrication systems may also be powered by electrical motors or by a combination of both power units. A lubrication system is usually a component of the larger power unit, which is located inside the machine.
Typically a centerless grinder consists of an aluminum plate and a steel or cast iron pedestal to support the rotating cutting tool. There is typically a shaft attached to the top of the pedestal and a power unit beneath the pedestal. The shaft and the power unit are connected to a housing through a small hole. There is generally a small gap at the top of the housing, which allows a small amount of hydraulic pressure to act through the shaft as it spins the cutting wheel.
Most centerless grinders use two sliding wheels, with one located near the top and the other located near the bottom of the machine. A small geared jack and a similar type of lifting jig are using to raise the workholding upright. The workholder then moves up and down on a fixed ring or band that is attached to the workholder. One or more of the wheels will be fitted with diamond wheels that enable the wheels to spin at extremely high speeds. These high spinning wheels provide excellent accuracy and excellent roundness.
One of the advantages of using this type of machine is that the cutting wheel can be placed at any angle in the chuck. This is particularly beneficial if the machine is used for burring. Another advantage of using centerless grinding machines is that they can greatly improve the quality of work because they eliminate the need for a spindle arm. These types of machines are especially suitable for machine polishing and machine turning. In addition, the smooth, rounded cutting wheels eliminate a major obstacle for machine operators who have to manually steer their equipment around obstacles on the workpiece.
Centerless grinders provide many advantages but there are some disadvantages as well. They generally require a good deal of manual labor in addition to their high startup costs. They also tend to be quite heavy. Larger models of centerless grinder are used to cut materials including brass, aluminum and stainless steel and their benefits include better part quality and greater accuracy. Overall, the centerless grinder is a great addition to any machinery setup as it provides excellent piece accuracy, high part quality and ease of operation.