New stack drill from Kennametal for aerospace composite/titanium stacks can operate with through-coolant or without for superior chip evacuation. Kennametal is introducing its all-new B55_DAL Drill for drilling CFRP-metal stacks in hole diameter ranges of 3/16" to 5⁄8" (4.763mm to 15.875mm). The drill can be applied in all combinations of stacks: CFRP-Ti-Al as well as CFRP-Ti, CFRP-Al, and also straight Ti or Al. These drills can operate with standard through coolant, MQL, or even dry.
New materials are demanding new solutions. To maximize strength and minimize weight, the aerospace industry continues to research using stacks of composite fiber-reinforced polymers (CFRP) sandwiched between titanium or other materials. This provides essential performance at reduced weight for wings, fuselages, cockpits, and many other components. Due to the substantially different mechanical properties of carbon fibers and metals, drilling fastener holes efficiently challenges cutting tools by requiring high wear resistance and optimum tool geometries. Keeping holes high-quality and burr-free is critical.
The new B55_DAL drill's double-angle point design provides excellent centering capability and the sharp edge to cleanly cut CFRPs in the top layer of stacks and cleanly exit the titanium or aluminum side without burrs. The fine-grain solid-carbide Beyond KN15 grade is highly polished for superior chip evacuation even with MQL or dry operation.
A broad range of diameters and length variations are available to accommodate all holemaking operations, even those using robots or automated drilling units. In addition, the new stack drills can be reground to original process specifications, making these new tools even more cost-efficient.
1. Process of locating the center of a workpiece to be mounted on centers. 2. Process of mounting the workpiece concentric to the machine spindle. See centers.
Fluid that reduces temperature buildup at the tool/workpiece interface during machining. Normally takes the form of a liquid such as soluble or chemical mixtures (semisynthetic, synthetic) but can be pressurized air or other gas. Because of water’s ability to absorb great quantities of heat, it is widely used as a coolant and vehicle for various cutting compounds, with the water-to-compound ratio varying with the machining task. See cutting fluid; semisynthetic cutting fluid; soluble-oil cutting fluid; synthetic cutting fluid.
Properties of a material that reveal its elastic and inelastic behavior when force is applied, thereby indicating its suitability for mechanical applications; for example, modulus of elasticity, tensile strength, elongation, hardness and fatigue limit.
Ability of the tool to withstand stresses that cause it to wear during cutting; an attribute linked to alloy composition, base material, thermal conditions, type of tooling and operation and other variables.
The HiPACS drilling and countersinking system can be utilized on all machines typically used for aerospace applications. In less stable conditions such as robot end effectors, the diamond coated carbide drills offer excellent tool life and hole quality. PCD-tipped drills, on the other hand, excel…
The FBX drill is part of a tooling concept specifically developed to maximize metal removal rates and decrease cycle times when machining aerospace structural components. Quickly removing large amounts of material remains a challenge for these types of components. Traditionally, the first process…
Extremely sharp cutting edges and low-friction rake surfaces eliminate concerns over built-up- edge. Low friction machining also produces superior surfaces in finishing operations, such as reaming. Surface roughness of Ra 0,1–0,8 μm (0.0025–0.02 μ-in) is achievable – far superior to conventional…
he HARVI I TE ball nose end mill is available in two different lengths, both with a diameter range from 2 to 20 mm (1/16" to 1"). The regular length is the first choice for 3D copy milling operations, while the long version offers sufficient length-of-cut (up to 4sD) for many applications…
The drill’s patented point thinning, special gashing, and a 143°-point angle provide excellent self- centering capabilities and reduce thrust, keeping the drill running straight even at the highest feed rates. In addition, four margin lands deliver maximum stability when drilling cross holes and…
With fixed and adjustable pocket seats, the new milling cutter provides the option for semi-finishing as well as fine-finishing applications, exceeding the highest surface quality requirements. With carbide, ceramic and PcBN inserts, this new tool is a flexible, cost-effective and user-friendly…
Drilling flat-bottom holes is a challenge. So is drilling on inclined or curved surfaces, drilling into cross holes, drilling stacked plates, and drilling into cross holes, stacked plates and castings and other rough surfaces. Not anymore. Leveraging the success of its KenTIP FS modular drill,…
Kennametal introduced another high-performance cutting tool, the B21*SGL solid-carbide drill with through-coolant. Designed for stainless steel, nickel and cobalt-based alloys, the B21*SGL with patented point geometry and monolayer PVD AlTiN coating, delivers improved productivity and longer tool…
Kennametal announced the latest addition to its HARVI line of high-performance solid endmills, the HARVI I TE 4-flute solid-carbide endmill. With a radical new design, the HARVI I TE delivers outstanding performance in a broad range of materials, including steel, stainless steel, high-temperature…
Kennametal has developed a 3D-printed stator bore tool to meet growing customer demand for lighter weight tooling solutions used to machine components for hybrid and electric vehicles. E-mobility components are typically machined on small, low-horsepower CNC machining centers that require lighter…
