1. What is an end mill, what is a disc mill, and what is the difference?
End mills are generally used for face milling, instead of milling grooves, you need to use keyway cutters. Disk milling cutters are mainly used for milling large ends, because the straightness of disk milling cutters is generally larger, and milling large ends is milling. It is relatively fast, and the saw blade milling cutter is generally used for milling.
2. Why can't the end mill be cut vertically?
The midpoint of the bottom edge of the end mill is relatively static when it rotates, and it does not have any cutting and chip removal properties, so it cannot be cut vertically.
3. How to determine the feed rate of the end mill?
The choice of cutting amount should be considered in combination with the tool, workpiece, machine tool and other factors. The main cutting edge of the end mill is the peripheral edge. The feed per tooth during finishing is generally about 0.1, and the feed per tooth is generally selected for rough machining. 0.25-0.3mm, it should be used in combination with cutting speed, axial depth of cut, radial depth of cut and other cutting parameters.
4. What is the difference between an end mill and a ball end mill and its selection principle?
End mills and ball end mills, one is ball end, the other is flat-bottomed, end mills are mainly for conventional processing, ball end mills can be used to mill curved surfaces and so on.
5. What is the difference between a collet for an end mill and a collet for a tap? Do I have to use a company tool holder for tapping?
Although the collet used to clamp the straight shank end mill can be used to clamp the tap for rigid tapping, the effect is not good. Generally, the small diameter tap is no problem; the ER collet used for the tap has a square groove, that is For the limited position of the flat tail of the tap shank, the general tool manufacturers now have this type of collet.
6. What is the difference between a reamer and an end mill?
The reamer has a straight edge, and the end mill has a spiral edge; the milling cutter has a bottom edge, but the reamer does not; the reamer is used for finishing the hole, and the milling cutter can be used for face milling, groove washing, and side washing. same.
7. How to determine the feed rate of the end mill?
The choice of cutting amount should be considered in combination with the tool, workpiece, machine tool and other factors. The main cutting edge of the end mill is the peripheral edge. The feed per tooth during finishing is generally about 0.1, and the feed per tooth is generally selected for rough machining. 0.25-0.3mm, it should be used in combination with cutting speed, axial depth of cut, radial depth of cut and other cutting parameters.
8. What are the steps for milling steps with end mills?
Install the end mill first, and then move the end mill to the top of the workpiece to be milled. Use the end teeth of the end mill to gently rub the upper surface of the workpiece, and then zero the dial of the milling machine's lifting handle; Then move the end mill to the side of the workpiece, lower the end mill to the side of the workpiece, and gently rub the side of the workpiece with the side of the milling cutter, zero the handle dial in the corresponding direction, and then start milling steps In addition, according to the size of the machining allowance, the strength of the material, and the size of the milling cutter, the depth of the knife is determined, from the least one cut to the completion of several cuts.
Nine, what is the difference between an end mill and a keyway milling cutter?
The main difference between an end mill and a keyway milling cutter is that the end mill is used to machine flat or cylindrical surfaces, so its outer diameter is relatively loose, while the keyway milling cutter is used to machine keyways, and its outer diameter size It directly affects the mating quality of the keyway and the key, so the tolerances are stricter; in order to machine the hole, the keyway milling cutter has only two cutting edges, and the end milling cutter has more than two cutting edges. The end face of the end mill has a center hole, while the end face of the keyway milling cutter does not have a center hole. Therefore, the end mill cannot directly enter the tool downward. If it goes deeper, the center hole will resist; and the keyway milling The tool can be fed directly downwards. In addition, the keyway milling cutter, as the name suggests, is used for milling the keyway, so the dimensional accuracy of its outer diameter is very high, generally reaching an accuracy of about 0.01mm.
