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The factors that affect the accuracy of external cylindrical grinding machines
The influence of the height of the grinding head, headstock and tailstock of external cylindrical grinding machines on the dimensional accuracy of the workpiece. The height error of the grinding head, headstock and tailstock will cause the center line between the headstock and tailstock and the axis of the grinding wheel to deviate in space, and the surface of the ground workpiece will be a hyperboloid.
The influence of the center connection line between the headstock and the tailstock of the external cylindrical grinding machines on the parallelism error of the main shaft axis of the grinding head in the horizontal plane on the dimensional accuracy of the workpiece. When this error occurs, the shape of the workpiece ground by external cylindrical grinding machines will be a cone, that is, the grinding wheel is ground at an angle, and the surface has a spiral grinding pattern.
The influence of the grinding head movement relative to the verticality error of the machine tool guide rail on the machining accuracy of external cylindrical grinding machines. The final result of this error is that the axis of the main shaft is offset from the center line of the headstock and the tailstock. When grinding the end face of the shaft shoulder, it will cause an error in the perpendicularity between the end face of the shaft shoulder and the axis of the workpiece. When grinding the outer circle, the surface roughness will be affected, resulting in a spiral grinding pattern.
The influence of the center connection line between the headstock and the tailstock of the external cylindrical grinding machines on the parallelism error of the main shaft axis of the grinding head in the horizontal plane on the dimensional accuracy of the workpiece. When this error occurs, the shape of the workpiece ground by external cylindrical grinding machines will be a cone, that is, the grinding wheel is ground at an angle, and the surface has a spiral grinding pattern.
The influence of the grinding head movement relative to the verticality error of the machine tool guide rail on the machining accuracy of external cylindrical grinding machines. The final result of this error is that the axis of the main shaft is offset from the center line of the headstock and the tailstock. When grinding the end face of the shaft shoulder, it will cause an error in the perpendicularity between the end face of the shaft shoulder and the axis of the workpiece. When grinding the outer circle, the surface roughness will be affected, resulting in a spiral grinding pattern.
