To ensure correct point alignment with the following deep hole drill, the point angle geometry of the WTX Co-Pilot drills has been set at 137° with either four or six facets, which is 3° less than the pilot drill and 2° greater than the WTX deep hole drills.
The WTX Co-Pilot drills are also toleranced to j6 in order to create the correct sized pilot hole to provide clearance for the following deep hole WTX drills which are toleranced at h7 and fg6.
The productivity gains generated through use of pilot drills are centred around the elimination of the need to peck for holes up to 20 x D for the Co-Pilot drills and no requirement for pecking at up to 50 x D when followed up with the WTX deep hole drill.
Process security is also enhanced along with enhanced tool life. The WTX Co-Pilot drills are available in a range of diameters between 3mm and 9mm and are suitable for materials in the P, M and K categories for steel, stainless steel and cast iron.
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