Star Cutter 推出四刃四孔枪钻，进给率与刀具寿命提升 40% 至 50%
New Four-flute/Four-hole Gundrill for High-production Deep Hole Drilling
Star Cutter Company 推出四刃四孔枪钻，面向高产量深孔钻削，用于提升生产率和刀具寿命。该刀具适用于蠕墨铸铁（CGI）和铸铁件，包括发动机缸体、缸盖、曲轴、凸轮轴等汽车关键零件。刀具采用四条切削刃、四个内部冷却孔，刀体为高速钢，头部为钎焊硬质合金；四条切削刃分散切削载荷使磨损更均匀，内部冷却孔将冷却液直接送到切削区。相比传统枪钻设计，四刃结构在已验证应用中实现进给率和刀具寿命提升 40% 至 50%，具体增益视工件与加工条件而定，可缩短循环时间、延长刀具寿命并提供更多重磨次数以降低整体刀具成本。圆刀具产品经理 Richard Rickert 表示，高速钢刀体加钎焊硬质合金头在不牺牲切削性能的前提下，比整体硬质合金结构更具成本优势。该枪钻直径范围 8 mm（0.315″）至 34.925 mm（1.375″），总长可达 48″。
Star Cutter Company has introduced a Four-Flute/Four-Hole Gundrill designed to increase productivity and tool life in high-production deep hole drilling. The tool is ideal for drilling compacted graphite iron (CGI) and cast iron components, including engine blocks, cylinder heads, crankshafts, camshafts, and other critical automotive applications. It features four cutting edges, four internal coolant holes and an HSS steel body with a brazed carbide head.
The four cutting edges distribute the cutting load for more uniform wear, while the internal coolant holes deliver coolant directly to the cutting zone. Compared to traditional gundrill designs, the four-flute configuration has achieved 40% to 50% increases in feed rate and tool life in proven applications, with greater gains possible depending on the workpiece and machining conditions. These improvements can reduce cycle times, extend tool life and provide additional regrinds to help lower overall tooling costs.
“The HSS steel body with a brazed carbide head provides a more cost-effective alternative to solid carbide construction without compromising the cutting performance these applications demand,” said Richard Rickert, round tool product manager, Star Cutter. “Combined with the higher feed rates and longer tool life of the four-flute design, it gives manufacturers an opportunity to increase output while reducing cost per part.”
Available in diameters from 8 mm (0.315″) to 34.925 mm (1.375″), the Four-Flute/Four-Hole Gundrill can be produced in overall lengths up to 48″.
About The Star Cutter Family of Companies
Headquartered in Farmington Hills, MI, and originally founded in 1927, the Star Cutter Company is a global leader in the cutting tool industry with more than 700 employees working in 15 manufacturing facilities. Each facility specializes in producing a specific type of product or service: carbide blanks and preforms, solid carbide cutting tools, gundrills, PCD tooling, gear cutting tools, and 5-axis CNC tools and cutter grinding machines.
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来源：Fabricating & Metalworking · fabricatingandmetalworking.com