Analysis of factors affecting cutting surface roughness in parts processing?

1. The influence of cutting force and friction force. When machining and cutting parts, the cutting edge arc of the special tool and its response to the extrusion and friction of the product workpiece’s side can cause plastic deformation of the metal material, resulting in distortion or aggravation of concave grooves in the current residual area, improving surface roughness and causing brittle raw materials in production and processing. At this time, the cutting chips become crushed particles, and the surface after production and processing often shows signs of particle collapse, leaving many indentations and making the surface not smooth. ​​ 2. The impact of work hardening. When cutting plastic with specialized cutting tools at a certain rate, some small particles on the cutting surface will adhere to the tip of the front edge, producing a high toughness accumulation edge that can replace laser cutting of the front edge and cutting edge. When the sliding friction between the cutting and stacking edges exceeds the spray welding compressive strength between the stacking edge and the front edge, or when it is damaged or vibrated, the stacking edge will burst out, and the newly created – up edge will gradually transform into. The generation, growth and development, and falling of stacked edges can seriously affect the surface roughness of parts. 3. The impact of scales and thorns. During the entire cutting process, due to the frictional force and spray welding on the cutting surface during precision part machining, cutting chips will accumulate on the front cutting surface on time, and then compress the newly produced surface. In obvious cases, the surface will tear. Phosphorus like spikes appear on the surface, making it uneven and uneven. Due to the influence of the above physical elements on surface roughness, in order to better reduce surface roughness, in addition to reducing plastic deformation caused by cutting forces, it is necessary to prevent the accumulation of malignant tumors and chip shedding during precision part machining.