Exchangeable-head tools new progress

It is acknowledged that drilling is the most widely used machining process, both in machining centers, CNC lathes, or in special drilling machine, drilling can be carried out. Processing cost per hole, drilled hole quality and integrity are selected drill and process the key factors to consider when. Often you can put some relevant processing operations such as reaming, chamfer, expanding drilling and boring integrated in a tool, in the drilling easily accomplish together.
Replaceable drill tip drill in the late 1990s came, when the drill bit carbide drill tip wear, can easily be replaced without having to drill cutter body from the holder and / or remove the spindle . Each of the steel blade suitable for the given size range crown of different diameters, the user no need to drill a hole the diameter of each purchase of a specific drill size, which can save costs. Typically, drill cutter body can be covered with pore size of about 1mm, many vendors drill tool tip diameter diamond hole saw  increments of 0.10mm.
In the drill bit replacement carbide steel cutter body concept to guide the drill tip interchangeable modular reaming head cutters and system development, and the same success, allowing users to benefit greatly.
Replaceable drill tip drills advantages in the following areas:
(A) save a lot of machining operations and tool management costs;
(2) reduce the use of carbide cutter body material;
(3) longer tool life and hole machining predictability;
(4) reduces drill inventory;
(5) eliminates the need for regrinding the drill bit, back up the tool and the desired fluidity;
(6) loaded knife significantly shorten the time, because it is in the holder on the machine and replace the drill tip, without presetting, compensation and the knife.
In order to correctly select the drill type, you will need to correctly answer questions about drilling dimensions, tolerances and surface finish requirements, as well as machining tasks or workshop  brick saw blades economy and other issues. For the processing of diameter less than 12.7mm, taking into account the machining precision and performance, solid carbide drill bit is still the recommended solution; diameter greater than 25mm for processing (especially roughing), recommend the use of indexable insert drills. The power tool on the processing of more than 25mm or even 51mm diameter holes, the use of indexable drills particularly effective.
In the range of 12.7-25.4mm diameter between drilling, you can change the drill tip drills have become a common choice because it can provide both precision drill hole on capacity and cost-effective, measurable overall competitive advantage. Carbide drill tip with the concrete cutting blade  workpiece material and processing requirements for optimizing drill tip shape design features, and usually without regrinding, so replace each drill tip is new, its processing performance and all the other new drill tip identical and re-grinding of solid carbide drills can not do this.