Mitsubishi Materials has launched a new range of small boring bars for Swiss type automatic lathes. Notably, the whole series is available in both solid carbide and steel. The inclusion of both types provides a choice for end users and offers the benefits of deeper boring capability due to the extra rigidity of the carbide type. Additionally, not all components need an extra-deep-hole carbide shank, therefore the cost-effective steel type is also available in all types.

The length of the tools is compatible with Swiss-type automatic lathes, an important criteria, especially where workspace is at a premium. This ready-made-to-length feature negates the costly and time consuming process of cutting the shanks of standard tools to a shorter length to prevent interference.

A comprehensive selection of hard steel bars has recently been introduced to the range. The hard steel body is effective in preventing damage and wear caused by chip evacuation. Hard steel types are available in diameters ranging from 4 to 10 mm diameter for the 7° SCLC, STUC, SDUC, SDQC and SWUC types of holder, and for SCLP and STUP 11° types.

A vast range of different carbide bar diameters, ranging from 4 to 32 mm diameter with a minimum pre-boring diameter of 5 to 34 mm are also available for the 7° SCLC, STUC, SDUC,

SDQC and SWUC types of holder, and for SCLP and STUP 11° types.

Finally, the steel bars range from 12 to 32 mm diameter with a minimum pre-boring diameter of 14 to 40 mm. Again. these are available in the 7° SCLC, STUC, SDUC, SDQC and SWUC types of holder, and for SCLP and STUP 11° types.

More information www.mmc-carbide.com

Machining long-chipping steel materials like stainless steels has always been a challenge. With the development of a new, standardised chip breaker geometry for fine-boring blades, MAPAL says it has achieved a crucial breakthrough that has both technical and economic benefits.

In metal machining, chip formation plays a key role in process reliability, tool life and surface quality. Controlled chip formation is particularly crucial to the fine machining of unalloyed, alloyed and stainless steels.

MAPAL has developed a brand-new approach to chip breaking for fine-boring tools. The solution combines a precisely defined lead and rake angle geometry with optimally adapted cutting data and cutting depths. According to the company, this precise adaptation enables perfect chip formation, even for challenging materials. The result? Optimal chip removal, reduced heat development and much greater process stability.

The benefits of this technology can be seen not only in the quality of the finished workpieces, but in the cost-effectiveness of manufacturing. Less machine downtime and tool wear and greater dimensional accuracy make this approach a real leap forward in machining technology.

Chip breakers are not a new invention, but the idea of implementing standardisation for long-chipping steel materials in fine boring is. The chip-breaker geometry developed by MAPAL combines decades of experience in this area with a clear focus on cost-effectiveness and user orientation. Until now, MAPAL has used chip-breaker technologies for custom solutions. With this new innovation, the company is taking a big step towards standardisation and efficiency.

The fine-boring blades with chip-breaker geometry for unalloyed, alloyed and stainless steels are now available from stock with defined geometries and coatings.

More information www.mapal.com