Deburring type and hazards
Deburring machine manufacturers will take you to understand the deburring type and its hazards.
The machining methods of mechanical parts can be roughly divided into material removal processing, deformation processing, additional processing and so on. In all kinds of processing, the extra part derived from the processed part that does not conform to the required shape and size is the burr. The generation of burrs varies with the processing method. According to different processing methods, burrs can be roughly divided into:
Casting burr: The excess material generated at the joint of the mold or the root of the gate. The size of the burr is generally expressed in millimeters.
Forging burr: It is caused by the plastic deformation of the forging material at the joint of the metal mold. Electric welding and gas welding burrs: electric welding burrs are the burrs on the surface of the part where the filler at the weld protrudes; gas welding burrs are slag overflowing from the incision when the gas is cut.
Punching burrs: When stamping, there is a gap between the punch on the die and the lower die, or there is a gap between the cutting tools at the cut, and burrs are generated due to die wear. The shape of the punching burr varies according to the material of the plate, the thickness of the plate, the gap between the upper and lower dies, and the shape of the punched part.
Cutting burrs: machining methods such as turning, milling, planing, grinding, drilling, and reaming can also produce burrs. The burrs produced by various processing methods have different shapes with different tools and process parameters. Plastic molding burr: Like casting burr, burr produced at the joint of plastic mold.
The existence of burrs will cause the entire mechanical system to fail to work normally, reducing reliability and stability. When the machine with burrs performs mechanical movement or vibration, the burrs that fall off will cause premature wear on the sliding surface of the machine, increase in noise, and even cause the mechanism to jam and malfunction; some electrical systems may be caused by burrs when moving with the host. Falling off causes the circuit to be short-circuited or the magnetic field is destroyed, which affects the normal operation of the system; for hydraulic system components, if the burr falls off, the burr will exist in the tiny working gap of each hydraulic component, causing the slide valve to jam and the circuit or filter screen As a result, accidents can also cause fluid turbulence or laminar flow, which reduces the performance of the system. Japanese hydraulic experts believe that 70% of the reasons that affect the performance and life of hydraulic parts are caused by burrs; for transformers, iron cores with burrs increase by 20 to 90% compared to iron cores with burrs, and increase with the increase in frequency. . The existence of burrs also affects the assembly quality of the mechanical system, the processing quality of the subsequent processing procedures of the parts and the accuracy of the inspection results.
