Selection of cutting parameters for gun drills
1. Selection of cutting parameters for gun drills: The cutting line speed is confirmed based on the processed data, but gun drills generally use high-speed, low feed cutting methods.
2. The selection requirements for the cutting speed Vc of the gun drill take into account the tool life, workpiece data, and workpiece quality. In theory, Vc=Cr/D * P1 (Cr and P1 are constants), generally high-speed steel Vc=35-70m/min, and hard alloy Vc=70-180m/min. In actual production, adjustments are required based on the shape of the chips.
3. The feed rate F is affected by the strength and rigidity of the workpiece, machine tool, tool, etc. When adjusting the machine for trial cutting, F is generally selected from low to high, and the F value is also related to the tool diameter. For alloy steel and tool steel with a diameter less than 5mm, Vc=70~100m/min， Feed rate f=0.003-0.019min/r, with a diameter ranging from 10 to 20mm, f=0.025~0.036min/r
The function of using a gun drill not only depends on the quality of the gun drill itself, but also requires a reasonable combination of cutting parameters and a reasonable adjustment of coolant flow rate and pressure to achieve the desired machining effect. Suggestion: The cutting speed and feed rate should be obtained through trial cutting to ensure accuracy.
Corresponding alloy brands and grades are used for different yield properties of different materials to ensure stable quality of each drill. The company provides one-stop technical services for customers by supporting the production of guide sleeves, rubber sleeves, extension rods, grinding wheels and other related accessories. We have a wide customer base and high reputation in the fields of automobiles, environmental molds, medical, aerospace mold parts, and more.