Four Steps for Sharpening Tips
Tip 1: “Tilt the blade to level the surface of the wheel. » This is the first step in determining the relative position of the drill bit and wheel. Students often begin sharpening by leaning on the wheel before leveling the edge. This definitely won’t work well. The “cutting edge” here is the main cutting edge, and “leveling” means that the main cutting edge of the workpiece being sharpened is in a horizontal position. “Wheel face” refers to the surface area of the grinding wheel. “Lean” means getting closer slowly. The drill bit cannot yet contact the grinding wheel at this point.
Tip 2: “The acute angle of the drill spindle is released obliquely” here refers to the positional relationship between the drill axis line and the grinding wheel surface. The “sharp angle” corresponds to half the upper angle of 118° ± 5°, or approximately 60°. This position is very important and directly affects the size of the top angle of the drill bit, the shape of the main cutting edge and the chisel. edge bevel angle. Students should be asked to memorize the angle of 60° in a commonly used triangle of 30°, 60° and 90°, so that they can master it easily. Both Formula 1 and Formula 2 refer to the relative position of the drill bit before sharpening. Both must be taken into consideration. Do not neglect adjusting the bevel angle to straighten the edge, nor neglect adjusting the edge. to adjust the tilt axis. These errors often occur in real operations. At this point the drill bit is ready to contact the grinding wheel in the correct position.
Tip 3: “Grind the back from edge to edge” here means slow sharpening from the edge of the drill over the entire surface of the sidewall. This makes heat dissipation and sharpening easier. Based on the stabilization and consolidation formulas 1 and 2, at this time, the drill bit may slightly contact the grinding wheel and perform less sharpening. During sharpening, the uniformity of sparks should be observed, the pressure should be adjusted. Attention must be paid to cooling the drill bit. When you restart sharpening after cooling, you must continue to place the positions of formulas 1 and 2. It is often not easy to understand when you first learn it, and you will often unintentionally change the correctness of its position.
Tip 4: “Rotate the tail up and down without tilting the tail” is also very important in the process of sharpening the drill bit. Students often change the “up and down swing” to “up and down rotation” during sharpening, thereby causing the phenomenon. other main blade of the drill to destroy. At the same time, the shank of the drill bit cannot be raised above the horizontal center line of the grinding wheel, otherwise the cutting edge will be blunt and cutting will be impossible.
Daguang focuses on providing solutions such as precision CNC machining services (3-axis, 4-axis, 5-axis machining), CNC milling, 3D printing and rapid prototyping services.
