CBN cutter for machining brake discs

The brake disc is the main part of the automobile brake system. Its processing technology requires that the casting outline be processed completely. After finishing, no casting defects such as shrinkage porosity, porosity, sand hole should be allowed. Brake discs of brake drums and disc brakes may cause failures due to excessive wear and tear and surface cracks. Excessive wear can be reduced by selecting proper size of brake disc and drum, selecting improved materials of brake drum and drum, and adopting brake design to prevent grinding of pollutants such as dust and sludge. The main raw materials for casting are pig iron, scrap steel and return iron. Some alloys, such as Cu and Cr, are added to improve the properties of the castings.



The brake disc can be processed with coated carbide blade, cubic boron nitride blade, ceramic blade, etc. These three kinds of blades have their own processing range and conditions, but in terms of processing efficiency and investment cost, the cubic boron nitride blade has the highest performance-price ratio. Bott's SNMN series square CBN blade and Walter's coated blade have the highest performance-price ratio. Compared with the wafer, because it can realize high-speed cutting, meet the automatic NC machining, so that the brake disc processing efficiency has been improved by 10 times, is widely used in the brake disc roughing and finishing process. On the other hand, CBN blade has many cutting edges, and high accuracy of rotation, more suitable for vertical and horizontal CNC machine tools to process Automotive parts, bearings, rollers and other hardened steel. Because of the good rigidity of CNC lathe, high precision of manufacture and tool setting, and convenient and accurate manual compensation or even automatic compensation, the combination of CBN blade and CNC machine tool can process parts with high dimensional accuracy requirements, and realize turning instead of grinding.


Cubic Boron Nitride Cutting Tool is suitable for the processing requirements of inner, outer circle, end face and chamfer of various brake drums, brake drums, brake discs, wheels and hubs in automobile industry. It can also process various kinds of parts such as disc, shaft and hole.