The difference between folding drill bits

7 6月 2021 | 没有评论 | posted by admin | in Article

HSS drill bit-tip angle is generally 118 degrees, sometimes greater than 130 degrees; the blade is sharp; the accuracy (blade height difference, symmetry, circumferential runout) is relatively low. There are many ways to repair chisel.

HM drills-the top angle is generally 140 degrees; straight flute drills are often 130 degrees, and three-edged drills are generally 150 degrees. The blade and the tip (on the edge) are not sharp and are often dulled, or called inverted edges and chamfers; high precision is required. Chisel blades are often repaired into an S-shape to facilitate chip breaking.

Mold milling cutter

4 6月 2021 | 没有评论 | posted by admin | in Article

Used for processing mold cavity or convex mold forming surface. Mold milling cutters are evolved from end mills. According to the shape of the working part, they can be divided into three types: conical flat head, cylindrical ball head and conical ball head. Cemented carbide mold milling cutters are very versatile. In addition to milling various mold cavities, they can also replace hand files and grinding wheels to clean the burrs of casting, forging, and welding workpieces, and to smooth certain formed surfaces. Wait. The milling cutter can be used on pneumatic or electric tools, and its production efficiency and durability are dozens of times higher than that of grinding wheels and files.

T knife

2 6月 2021 | 没有评论 | posted by admin | in Article

It is a tool assembled on a milling machine for milling T-shaped grooves and side grooves of workpieces. T-shaped cutters are also called T-shaped milling cutters, semicircular milling cutters, and keyway milling cutters, which can perfectly process T-shaped grooves and side grooves. Normally maintain cutting performance at high temperatures.