The article describes the deep drilling tests of internal company research, which is aimed to determine the geometric tolerances as run-out, roundness and roughness, but also the shape and size of chips depending on cutting parameters. Further exploration subject was recorded using the actual engine power to determine the torque and axial force required for removing particles at the given cutting parameters. The results served to increase the productivity of deep drilling operations within the optimization process.

This article describes methodology and realization of the deep hole drilling test. Goal of this trial is to define influence of the cutting speed and feed rate on torque and feed force. As well as during the test here was a focus on roughness and shape of the chips. A gun drill was used for deep hole drilling and we used etalon material, were here is possible to define cutting forces without any further testing of different steel grades. Also there is a description of CNC program, which was used for above mentioned testing and it can be utilized during other different trials.

Skiving is a relatively new technology that can partially replace a lead of tooth grinding. This article aims to introduce the results of skiving in a particular production. In the first parts of the article authors focused on the technology of skiving and its patterns. In the following part they introduce results of tooling. The last part of the article describes appreciation, advantages and disadvantages of the technology.