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External composite grinding machine (2)

Oct 10, 2019

Grinding machines can process materials with higher hardness, such as hardened steel, hard alloy, etc., and can also process brittle materials such as glass and granite. The grinding machine can perform high-precision surface roughness with little grinding and high-efficiency grinding, such as strong grinding.

The grinding wheel frame is provided with an internal grinding attachment. The grinding wheel frame and the head frame can be adjusted at an angle around the vertical axis. The spindle can also rotate on the head frame in addition to the rotation of the dial. This kind of grinding machine can enlarge the processing range, grind the inner hole and the inner and outer taper with large taper, suitable for small and medium batch and single piece production.

The CNC cylindrical grinding machine is pre-programmed according to the processing requirements, and the control system sends out numerical information instructions for processing, mainly for grinding the cylindrical and conical outer surface grinding machine. CNC cylindrical grinding machines generally have the characteristics of generalization, high degree of modularity, high precision, high rigidity, high efficiency and high adaptability.

The influence of the movement of the grinding head relative to the perpendicularity of the machine guide rail on the machining accuracy. The final result of the internal and external cylindrical grinding machine of this error is that the spindle axis is offset from the head frame and the tailstock center line. When the shoulder end face is ground, the perpendicularity error between the shoulder end face and the workpiece axis will be caused. When grinding the outer circle, it will affect the surface roughness and produce a spiral grain.

1. The influence of the height of the grinding head, the head frame and the tailstock on the dimensional accuracy of the workpiece. The height error of the grinding head, the head frame and the tailstock will cause the head frame and the tailstock center line to be offset from the axis of the grinding wheel spindle. The surface of the workpiece will be a hyperboloid.

2. The influence of the parallelism error of the head frame and the tailstock center line on the axis dimensional accuracy of the grinding head spindle axis in the horizontal plane. When this error occurs, the shape of the workpiece ground by the cylindrical grinding machine will be a cone, that is, the grinding wheel is angled and the surface has a spiral shape.

3. The influence of the vertical movement error of the grinding head relative to the machine guide rail on the machining accuracy. The final result of the internal and external cylindrical grinding machine of this error is that the spindle axis is offset from the head frame and the tailstock center line. When the shoulder end face is ground, the perpendicularity error between the shoulder end face and the workpiece axis will be caused. When grinding the outer circle, it will affect the surface roughness and produce a spiral grain.


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