twist drill
17 5月 2022 | 没有评论 | posted by admin | in Article
A twist drill is a tool that drills a circular hole in a workpiece through its rotational cutting relative to a fixed axis. Named because the chip flute is spiral-shaped and resembles a twist. Spiral flutes have 2, 3 or more flutes, but 2 flutes are the most common. Twist drills can be clamped on manual or electric hand-held drilling tools or on drilling machines, milling machines, lathes and even machining centers. The drill bit material is generally high-speed tool steel or cemented carbide.
Uses of face milling cutters
16 5月 2022 | 没有评论 | posted by admin | in Article
High-speed steel face mills are generally used to machine medium-width flat surfaces. Standard milling cutter diameter range is ?80-?250mm. The cutting efficiency and processing quality of carbide face milling cutters are higher than those of high-speed steel milling cutters, so carbide face milling cutters are widely used to machine planes.
Integral welded face milling cutter. The knife has a compact structure and is relatively easy to manufacture. However, the whole knife will be scrapped after the teeth are worn, so it is less used.
The machine-clamped welding face milling cutter is to weld the carbide blade on the small cutter head, and then use the method of mechanical clamping to clamp the cutter in the cutter body groove. After the cutter head is scrapped, it can be replaced with a new cutter head, thus extending the service life of the cutter body.
According to the different structure of the milling cutter, it can be divided into
14 5月 2022 | 没有评论 | posted by admin | in Article
1. Face milling cutter (also called end milling cutter): There are cutting edges on the circumferential surface and end face of the face milling cutter, and the end cutting edge is a secondary cutting edge. Face milling cutters are mostly made of sleeve insert tooth structure and blade machine clip indexable structure. The tooth material is high-speed steel or cemented carbide, and the cutter body is 40Cr. Drilling tools, including drills, reamers, taps, etc.;
2. Die milling cutter: Die milling cutter is developed from end milling cutter, which can be divided into three types: conical end milling cutter, cylindrical ball end milling cutter and conical ball end milling cutter. The shank has a straight shank. , Flattened straight shank and Morse taper shank. Its structural feature is that the ball head or end face is covered with cutting edges, and the circumferential edge is connected with the arc of the ball head edge, which can be used for radial and axial feed. The working part of the milling cutter is made of high-speed steel or cemented carbide.
3. Keyway milling cutter: used for milling keyway.
4. Forming cutter: the cutting edge is consistent with the shape of the surface to be machined.
