The cutting of the slitter blade is the same as the wear of the slitter blade, and it is also a form of failure of the slitter blade. When the slitter blade is used under certain cutting conditions, if it cannot withstand strong stress (cutting force or thermal stress), sudden damage may occur, causing the cutter to lose cutting ability in advance. This condition is called slitting. The machine blade is broken. Damage is relative to wear.
In a sense, damage can be considered an abnormal wear. The breakage of the slitter blade is either early or late (breakage after processing to a certain time). The form of the blade of the slitting machine is divided into two types: brittle fracture and plastic breakage. Cemented carbide and ceramic slitter blades often undergo brittle fracture under mechanical and thermal shock during cutting. Brittle fracture is divided into: chipping, breaking, peeling, crack damage.
The form of the cutter blade damage is mainly wear and damage. In modern production systems (such as FMS, CIMS, etc.), when the cutting machine blade is abnormally worn or damaged, if it cannot be found and taken in time, the workpiece will be scrapped or even the machine tool will be damaged, causing great losses. Therefore, it is very important to monitor the blade status of the slitter.
Slitting machine blade damage monitoring can be divided into direct monitoring and indirect monitoring. The so-called direct monitoring, that is, directly observe the state of the slitting machine blade, and confirm whether the cutting machine blade is damaged. The most typical method is the industrial television) camera method. The indirect monitoring method uses indirect other physical quantities or physical phenomena related to the breakage of the slitting machine blade to indirectly determine whether the cutting machine blade has been damaged or has a precursor to impending damage.