Double column surface grinders are grinding machines that can do a series of heavy duty jobs based on the column structure that can play the role as strong resistant media to the vibration effect caused during heavy duty machining.
The structure of column and double column are two common and popular rigidity reinforcements that are used in the machine tools in order to enhance their working performance as well as cutting rigidity. Double column surface grinding machines demonstrate the capacity that grinding process can be conducted on hard surfaces even if the anticipated vibration is serious.
Grinding causes serious vibrations because it is a process of abrasive cutting, so the processing of grinding would cause serious vibrations unto the work pieces and the related working machine body. Surface grinding is one of the most critical key-issue in the whole finishing process because after the process of forming, cutting, and other complex processing, many work pieces would go to this step for further finishing process so the work pieces are eventually finished.
The procedure of surface grinding conducted by double column grinding machines is adopted to produce a smooth finished surface on either flat or other specific surfaces. Besides, there are many types of grinders such as cylindrical, internal, center-less, and other types of grinding processes. The surface grinding is one of the most general grinding acts that exist in the industry since the very early history and also, it last to now among the various grinding operations as all the other cutting process can only deal with the frontier part of the machining.
CNC programmed based grinding is a finishing process which utilizes a rotational abrasive wheel to smooth the surface of metallic or non-metallic materials in order to deliver a refined physical situation by removing the layer and impurities on the work piece surfaces under the management of computer numerical control mechanism that is driven by digital processes now.
If the milling or grinding machines are designed with only one column, it is often the Y or Z axis that works along as the other moving phase. With the support of two columns as the basic grinder structure that is installed with the tooling system, the grinding processes will attain an intended surface for functional purposes that are planned and programmed by machine tool engineers.
Besides the double column, the mechanical structures of surface grinders are composed of an abrasive wheel, a work piece holding device, and a reciprocating table. During the machining of grinding, the holding device would hold the material in place while it is being machined. The clamping mechanism can be done via two types of methods. The first one is the case for the ferromagnetic pieces. This type is held in place by a magnetic chuck, yet for the non-ferromagnetic and nonmetallic pieces, they are held in place by either vacuum or mechanical measures. The clamping mechanism is crucial to the whole processing since only with the stern positioning and clamping mechanism, can the work be achieved precisely under an accurate level and a controlled status.
Aside from the computer management of the cutting route and the double column structure, there are other important parameters affecting the grinding accuracy. The critical factors that affect surface grinding are many, yet the most important one is the material of the grinding wheels and the material of the work pieces.
Grinding wheels and work pieces are closely connected to each other and there is no space lay in between. Work piece materials include a specific pattern of metal materials such as aluminum, brass, steel, cast iron, mild steel, and others. Among the various choices of materials, some of them are more stable and will not attach to the wheel during processing, while some are born with different physical natures that would lead to corrosion, which is not ideal for further application. On the other hand, speaking of the shape of the grinding wheel, the shape is not confined to specific shapes but could be a variety of shapes and profiles.
For better processing capacity, onsite operators can dress the wheels for specific usages and purposes. There is one thing that is noteworthy that, during the surface grinding process on the double column surface grinder, the shapes of the dressing wheels will be affected by the reverse shape of the targeted work pieces. With this effect kept in mind, operators have to be aware of the changes of the shapes in order to make instant modifications onto the grinding wheels.
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