What high-speed cutting?

There are many questions about high-speed cutting and a number of conflicting definitions. These issues will be mentioned below, and with help to eliminate the mystery surrounding the high-speed cutting methods discussed.

Historical Background

Term high-speed machining (HSM) generally refers to the surface at high speed and high feed milling under. For example, high metal removal rates on aluminum aircraft wing aircraft for cutting the recess. In the past 60 years, high-speed machining has been widely used in metal and nonmetal materials, including the specific requirements of the surface shape of parts production and greater than or equal to 50 HRC hardness of the material cutting. For most hardened to about 32-42 HRC steel parts, the current cutting options include:

In the soft (annealed) condition the material roughing and semi-finishing cutting

Hardness = 63 HRC to reach the final heat treatment requirements

Some parts of the electrode mold processing and electrical discharge machining (EDM) (in particular gold hard cutting tool close to the small radius of deep pockets)

With a suitable carbide, cermet, carbide, mixed or polycrystalline cubic boron nitride ceramic (PCBN) tools for the cylinder / flat / recessed surface finishing and super finishing

For many parts, the production process involves a combination of these options, in the mold case, it also includes time-consuming finishing. A result, high production costs and long lead times.

In the mold manufacturing typically produce only one or the same product. Changing the production process of products, due to product changes, the need for measurement and reverse-engineering.

The main criterion is the size and surface roughness of mold's quality level. If the low level of quality after processing and can not meet the requirements, the need to hand finishing. Hand finishing can produce a satisfactory surface roughness, but the groove on the size and precision is always undesirable impacts.

This mold manufacturing industry one of the major problems have been resolved, but still need to reduce or remove the manual polishing, in order to improve quality, reduce production costs and shorten the preparation time.