Cutting tool technology specialist TaeguTec has launched its WIN-MILL series, featuring the CVKT line of inserts and cutters for miniature machining applications. This comprehensive solution addresses the increasing demand for high-performance, cost-effective tooling in the precision manufacturing sector, offering diameter ranges from 6 to 20 mm.

TaeguTec says the WIN-MILL series represents a significant advancement in miniature end mill technology, featuring indexable inserts that provide higher performance than traditional carbide end mills. The system’s design incorporates innovative V-shaped, two-corner inserts that enhance stability and precision across various applications, including shouldering, high-feed milling, straight ramping, helical ramping, slotting, profiling and cavity machining.

Central to the WIN-MILL’s performance is its V-bottom contact design, which maximises clamping stability between the insert and cutter pocket. This novel approach ensures machining stability during demanding operations such as ramping and high-feed machining, while maintaining the precision necessary for miniature applications. The improved contact geometry offers enhanced rigidity compared with conventional designs, enabling more aggressive machining parameters and longer tool life.

The series offers productivity improvements through its optimised tooth configuration. Unlike traditional designs that typically accommodate only one or two inserts per tool, the WIN-MILL series maximises the number of available cutting edges. For instance, a 10 mm diameter cutter features three insert pockets compared with the industry standard of two, increasing productivity by up to 50% in certain applications. This increased tooth count provides four, five and seven insert positions on cutters ranging from 12 to 20 mm in diameter. When combined with a larger core diameter of the tool, end users experience improved rigidity and stability during machining operations.

More information www.taegutec.com

Tooling manufacturer Horn has expanded its DA milling programme for corner, face and plunge milling. Suitable for roughing or finishing, the new DA65 system uses a larger insert than the existing DA62, enabling greater axial depths of cut. The patented, six-edged, indexable insert can be used on both sides and has three axial and three radial cutting edges per side, leading to an economical cost-per-edge ratio.

The sintered, trigonal insert has a thick cross-section and, despite the negative lead angle, exhibits a positive cutting geometry, ensuring soft machining characteristics and reduced cutting forces. The selected axial and radial rake angles result in low torsional moment and less transverse load on the spindle, allowing system deployment on older and less powerful machines. A further advantage of the chosen axial rake angle is efficient chip evacuation, especially during helical plunging.

The cutting edge profile generates a precise 90° corner angle, the maximum cutting depth being 7 mm. As a point of note, the inserts are available with corner radii of 0.8 or 1.2 mm. The proven SA4B carbide substrate is an all-rounder for milling steel, stainless steel, cast iron and aluminium workpiece materials. Inserts are also available in grades SC6A or IG6B for machining other material groups.

The tools come as end mills in diameters of 32 and 40 mm featuring two or three inserts, and as shell milling cutters with a diameter of 50, 63, 80 or 100 mm. Depending on the size, there are four, five, seven, nine or 11 inserts. All tools have provision for internal coolant supply to the cutting zone.

More information www.horn-group.com

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