Double Column Surface Grinder

Column and double column structures are two common rigid reinforcements used in machine tools, the purpose is to improve their working performance and cutting rigidity. For abrasive cutting in the field of metal processing, surface grinding is one of the most critical steps in the entire finishing process. After forming, cutting and other complicated processing steps, many work pieces will go to this step for further finishing. Surface grinding can create smooth finished surface.

There are many types of grinders, such as cylindrical grinders, internal grinders, centerless grinders. From the very beginning, surface grinding has been one of the most common grinding methods in the industry, and until now it is still one of various grinding operations. Programmed based grinding is a finishing process that uses rotating grinding wheels to smooth the surface of metallic or non-metallic materials. Driven by a computer numerical control system, it provides a fine physical state by removing burrs on the surface of the work piece.

Double Column and Rigidity

The two-column support is used as the basic structure of the machine tool, and the grinding process will obtain the required surface and complete the tasks of engineer planning and programming. Regarding the mechanical composition, the mechanical structure of the double column type surface grinder is composed of grinding wheel, work piece holding device and reciprocating table.

During processing of double column surface grinding machine, the holding device holds the work piece in place. The clamping mechanism can be completed by two methods. The first is for ferromagnetic work pieces, which hold the work pieces in place by magnetic chuck. The second is for non-ferromagnetic and non-metallic work pieces, which are held in place by vacuum or mechanical means. The clamping mechanism is essential to the entire machining process, because only through strict positioning and clamping can the work be completed at a precise level.

Working Parameters

In addition to the computer management of the cutting path and the double column structure, there are other important parameters that affect the grinding accuracy. There are many key factors that affect double column surface grinding, but the most important ones are the material of the grinding wheel and the material of the work piece. Usually the work piece material can be aluminum, brass, steel, cast iron, mild steel, etc.

Among many material choices, some of them are more stable and will not adhere to the grinding wheel during processing, while other materials have different physical properties that will lead to corrosion and are therefore not suitable for further applications. On the other hand, the grinding wheel is not limited to a specific shape, but may be of various shapes. Grinder operators can dress wheels for special purposes. It is worth noting that in the double column surface grinding process, the shape of the grinding wheel will affect the reverse shape of the work piece, so the operator must be aware of the shape change in order to immediately modify the grinding wheel so that the required grinding can be smoothly carried out, so as to achieve the ideal processing effect. 

Designs and Considerations

Throughout the metal processing process, the CNC double column surface grinder is a machine tool used to provide precision grinding surfaces. Its purpose can be for specific size processing or for surface finishing, so the accuracy of the surface grinder will depend on its application. However, most surface grinders should be able to meet certain accuracy requirements.

Since the double column grinding machine is composed of a worktable that can travel in the longitudinal direction or along the surface of the grinding wheel, longitudinal feed and cross feed are usually driven by hydraulic pressure, but manual, electric or hydraulic hybrid methods can also be used. The driving method depends on the purpose of the grinding machine. This is why it is necessary to discuss the function with the double column grinding machine manufacturer in detail before purchasing it, and the accuracy must be set accurately before processing, otherwise the final output may disappoint the machine user.

Rotational Issues

Similar to other cutting machines, the grinding wheel of the grinding machine rotates in the spindle head and can be adjusted. The modern double column surface grinder is semi-automatic, which can preset the cutting depth and spark-out. With the preset, the machining process requires almost no operator intervention. Depending on the material of the work piece, a magnetic chuck may be used to hold the work piece. The clamping mechanism is important. How to clamp the work piece well is as important to the grinding machines manufacturer as the design of the double column structure.

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