Currently, there are many small factories and artisan workshops on the market that specialize in sharpening saw blades. Their blade-sharpening process involves only a simple, rough treatment of the front rake angle of the teeth. After such treatment, the original angles of the saw blade—such as the back rake angle, side angles, and tooth space—are completely left untouched. Moreover, these shops never conduct any inspection or correction procedures on the finished products after sharpening.
　　In response to customer feedback indicating that our company’s grinding fees are relatively high and the grinding process takes a long time, we would like to provide an explanation, introducing our company’s grinding process flow, inspection procedures, and relevant technical standards.
　　A. After our company receives the saw blades from the customer that require grinding, we first establish a product file for the customer. Then, we soak all the saw blades in warm water at 50 degrees Celsius for 30 minutes before proceeding with cleaning, rust removal, and removal of any adhering substances. We perform an initial visual inspection. Any products with obvious defects that cannot be further ground are cleaned, labeled with the customer’s identification number, and directly placed in the return area, to be sent to the customer together once all the grindable items have been processed.
B. Next, use a dial indicator to measure the angles, including the front rake angle of the teeth, the back clearance angle, and the side clearance angle (checking for cracks, chipped edges, etc.). Then, place the component on a projector and magnify it by 50 to 100 times to determine the original tooth angles and assess the wear condition of the saw blade. If the chipped edges on the teeth are relatively minor, we can appropriately increase the grinding amount to help reduce the customer’s production costs.
　　C. If alloy teeth need to be replaced, use the German KAHNY fully automatic tooth-welding machine to perform the tooth replacement operation.
　　D. Next, we proceed with stress correction for the saw blade—a step that is crucial in the grinding process. This step must be performed by a technician with extensive experience. During high-speed operation, external forces cause changes in the blade’s stress, leading to phenomena such as widened kerf widths and roughened surfaces. Our stress adjustment is carried out at least twice. If the adjustment falls within the standard range (referring to the production technology standards for Kanesawa saw blades from Japan), we move on to the next工序. Otherwise, we will contact the customer to seek their input. If the customer requests further grinding, we will perform precision regrinding. After completion, we will include detailed deviation data of the saw blade in its packaging. Our grinding process begins with coarse grinding using a diamond wheel imported from Japan with a grit size of 200, followed by fine grinding using a wheel with a grit size of 600.
　　E. The next step is to perform a vibration rate inspection. After passing this inspection, proceed with the procedures outlined in Step B for the final inspection. Once fully qualified, the product will be placed in the shipping area, and the work order will be handed over to the sales department, thereby completing the entire grinding process.