Problem 1: the work piece is easy to bend when grinding with external cylindrical grinder
Analyze the reason: The grinding amount is too large in cylindrical grinding; In the grinding of external cylindrical grinder, the supply of cutting fluid is insufficient.
Properly reduce the amount of back tool of the cylindrical grinder and ensure the adequate supply of cutting fluid;
Question 2: the size of the outer circle next to the shoulder is larger
The reasons are as follows: the residence time of the reversing table of the external cylindrical grinder is too short; the grinding wheel of the external cylindrical grinder is worn and the outer angle of the grinding wheel becomes round.
Preventive measures: prolong the residence time of the worktable of the cylindrical grinder. It is necessary to dress the grinding wheel of NC cylindrical grinder in time to ensure the grinding accuracy of work piece.
Problem 3: the dimensions at both ends of the work piece are large and saddle-shaped.
The reasons are as follows: the residence time of the worktable of the cylindrical grinder is too short, the top is too tight when grinding the long shaft, and the horizontal brace pressure of the center frame of the cylindrical grinder is too large.
Preventive measures: Tangent adjusts the residence time of the worktable of the cylindrical grinder and adjusts the top pressure of the cylindrical grinder. Adjust the horizontal support position of the center frame of the external cylindrical grinder correctly.