What Causes Irregular Patterns During Knurling Operation?

[DiTimothy]

Below are the specific causes and solutions for irregular patterns during knurling operation: 1. Specific causes: Fine iron chips or rust spots in the knurling tool teeth; The circumference of the workpiece is not an integer multiple of the knurling tool pitch; Insufficient initial cutting pressure and excessive contact area between the knurling tool and workpiece surface; The knurling tool rotates inflexibly; Worn tool teeth; Excessive workpiece rotational speed during knurling, causing slippage. 2. Solutions: Apply greater cutting force and tilt the knurling tool at a minimal angle, similar to a tool's minor cutting edge angle; Keep workpiece rotational speed moderate; Clean accumulated chips from the mesh pattern before knurling; Ensure minimal clearance between the knurling tool and small shaft, and promptly replace worn knurling wheels.