**3.4.5 Validation of the project results**

612 Mechanical Engineering

(a) (b) (c)

(d) (e) (f) Fig. 10. Boring heads (a) with tangential inserts attached to the cylindrical part, (b) with inserts placed on the frontal side by the elasticity of the tool body, (c) with tangential insert placed on the frontal face, (d) with insert with several edges, (e) with tangential insert

A more outstanding solution is a modular boring tool with a carbide helical drill or a drill with carbide inserts (in the case of larger diameter) and a special adjustable body for chamfer. The insert is fixed due to the elasticity of the tool body (fig. 10,f). This was the

To this solution, there were several aspects that could be optimized: the shape of the insert, the clamping system and the tool body. Optimization began with the estimation of the forces. The study continued with a static (fig.11) and dynamic modelling process, and it

The clamping system due to the elasticity of the tool body is very economical in terms of space. It is necessary to precisely determine the shape of the elements, in order to obtain a

placed the cylindrical side of an adjustable body, (f) modular tool)

The following step represents the optimisation of the adopted solution.

solution, which was finally chosen by the research team.

the type and form of the clamping system;

finalised with a Finite Element Method analysis.

small tension values, distributed as uniformly as possible;

Optimisation criteria were:

The result of the research project was discussed and validated by all the team members. Typically, other specialists and the beneficiaries are allowed to attend the synchronous meetings.
