The problems of twist drilling deep holes are well known in the engineering industry. Drill wander, poor size control and surface finish, flank wear, binding and breakage are occupational hazards. The operation can be slow and inaccurate in the extreme.
An alternative is the use of Ventec drills which are designed to bring the benefits of gun drilling technology to conventional machine tools. Now for a relatively small outlay, it is possible to equip your machine shop with a system that provides a deep hole drilling capability, which in terms of speed and accuracy, equates favourably with gun drilling. In operation the tool must be supported in a short pilot hole before drilling commences. Thereafter, penetration is continuous and depth to diameter ratios of up to 70:1 are achievable. The cutting forces created by the offset tip geometry act upon the carbide bearing pads, burnishing the workpiece and achieving fine surface and size control. It is this accuracy of dimensional control which is responsible for the excellent concentricity achieved by a Ventec drill. It has literally nowhere to go but forward.
Mould TOOL Drilling
