Non -standard tools are a collective name for all non -standard knives, including non -standard car knives, knife, milling cutter, re -knife, knife, etc. Through these non -standard design For processing characteristics, we can also customize non -coating tools. During the customization process, the non -standard knife has encountered the problem of surface roughness. It can be achieved by changes in the geometric angle of the blade part. If the degree of the front and rear angles can be increased significantly, it will significantly improve the surface roughness of the workpiece. Non -standard tools can meet the production needs of different workpieces and have significant significance for mechanical production. There are several types of surface defects in design and production. The following editors will list one or two, and attach the reasons and solutions, hoping to help reference.
1. Circular ripple
Reason: During the cutting process, the cut force changes greatly, and the work of pulling the knife is unobstructed, which causes the knife teeth to cut uneven cutting in the direction of the circle.
Solution: Check whether the width of the blade is uniform and small, etc., especially the processing accuracy of the first seven or eight blade teeth of the school's quasi -department. From the perspective of use, the pulling speed should not be too high; the accuracy and stiffness of the bed should be good, and the phenomenon of tremor does not produce; whether the bending of the knife is super worse and the radial beating.
2. Blade grind
Reason: The general wear volume VB needs to be grinded when it exceeds 0.3mm.
Solution: During heavy grinding, it is generally performed on a dedicated grinding bed. For the shorter knife, it can also be grinded along the front knife surface with a disc wheel of the universal tool grinding machine.
3. Scratch
Reason: Slightly.
Solution: Check whether there is a gap in the injury of the knife tooth blade; whether the dandruff on the cutting teeth (especially the fine teeth) is not cleaned; The smooth steps are squeezed out of the non -smooth scroll. Surgery and scratching processing surfaces.
4. Squeeze the point
Reason: Caused by severe squeezing friction between the rear knife surface and the processed surface.
Solution: Adopt a well -performed cutting fluid, sufficient pouring, and proper heat treatment of workpieces with high hardness to reduce its hardness to eliminate this defect.
