Drilling, Tapping and Threading Holes

DRILLS, TAPS, THREADING TOOLS

INTELLIGENT DEEP HOLE MACHINING
Sandvik Coromant US (Fair Lawn, NJ) offers a powerful deep hole machining concept for the STS system – CoroDrill® 808. Among its many features, this product is equipped with optimized pad design for good hole finish, unique edge preparation for increased chip breaking and a reinforced periphery insert corner for added security and reliability. Suitable for diameters from 15.60 mm to 65.00 mm (0.614 in to 2.559 in) and tolerance demands of IT 9, CoroDrill 808 is capable of producing perfect holes, regardless of the component material.

Being the first choice for close tolerance holes, CoroDrill 808 is perfectly suited for the energy segment, for example, when machining in heat exchanger plates. Cladded materials such as low carbon steel with Inconel, used for these types of applications, are difficult to machine due to tricky chip-breaking and tool life maintenance. Thanks to a specially designed geometry and grade technology, CoroDrill 808 produces superior close tolerance holes even in the toughest conditions. In addition, this drill is available as a stock standard item with 24 hour delivery.

CoroDrill 808 premium drills are equipped with a fully traceable dot matrix. It is a two-dimensional patterned array, used for storage and display of various types of information, for example, the measurement protocol. Such protocol includes data on diameter and run out of the drill, making dot matrix a very safe tool for product identification and traceability.

Sandvik Coromant US, 1702 Nevins Road, Fair Lawn, NJ 07410-0428, 201-794-5000, Fax: 1-201-794-5157, www.sandvik.coromant.com.

DEEP HOLE DRILLING
Dormer Pramet (Elgin, IL) offers the R459 solid carbide drill for applications up to 8xD. Created within the Dormer product portfolio, the R459 broadens the existing MP-X range which already consists of 3xD and 5xD solid carbide multi-material drills. A key feature of this new drill is its Continuously Thinned Web (CTW) geometry which increases both flute volume and cross sectional strength. The combination of these elements ensures consistent forces throughout the drilling cycle, with little or no increase in power requirement as the drill penetrates deeper into the hole. This, in turn, allows increased cutting speeds and greater performance reliability without compromising tool life.

A special outer corner design provides added protection against wear and chipping, especially when under extreme conditions, such as cross drilling applications, while a specially designed 140 deg point angle makes for easier centring and reduces thrust requirements. The R459 also incorporates a consistent edge preparation which protects against premature chipping and flaking. In addition, internal coolant holes allow for effective cooling of the cutting area and efficient swarf removal, minimising machine downtime.

The R459 is available in diameters from 3 mm to 16 mm, including 0.1 mm increments up to 10.0 mm, and features a titanium aluminium nitride (TiAlN) coating. Included within Dormer’s new 2015 rotary tooling catalogue, the 8xD drill is now available to purchase.

Dormer Pramet, 2511 Technology Drive, Suite 113/114, Elgin, IL 60124, 847-783-5700, Fax: 847-783-5760, www.dormertools.com.

IMPROVE THREAD QUALITY WHEN TAPPING HIGH STRENGTH STEEL
The Prototyp Paradur® Short Chip HT blind hole tap from Walter USA, LLC (Waukesha, WI) is designed to increase process reliability and quality when tapping long-chipping high tensile (HT) strength steels. Tapping, particularly blind hole tapping, is often a problem with long-chipping high strength materials because the coiled swarf or “bird’s nest” that result can endanger the tap and force the machinist to stop the operation in order to clear out the swarf, incurring time and production costs. The design of the Paradur Short Chip HT prevents this.

Axial internal cooling rinses these chips out of the hole through the spiral flutes. The cutting edges also have an adjusted rake angle. Tool life is enhanced by a proven THL hard coating, except on the reduced helix in the lower section of the tool, which is ground after the coating is applied. The bare surface of the rake at this point aids chip breaking. This combination of features enables the Prototyp Paradur Short Chip HT to reduce machine downtime, reduce tooling costs due to longer tool life, and produce clean and chip free threads. In addition, interference contour is no problem due to the short chips. While the Paradur Short Chip HT delivers these benefits on high-tensile long chipping materials, it can also be used on low tensile strength materials such as aluminum alloys or ductile cast iron.

The Prototex® HP-P is a high-performance tap that can handle the demands of large batch sizes and mass production. Targeted at steel applications from 600-1250 N/sq mm (175-300 HB), the three versions of Prototex HP-P feature HSS-E or HSS-E-PM substrates, TiCN or TiCNX coatings for heightened wear resistance, an optimized spiral point, and a through coolant design. Thanks to features like these, the Prototex HP-P is able to deliver high tool life for a tap in steel (175-370 HB). This in turn results in reduced tool costs and, because of fewer tool changes, it also results in less machine downtime.

Walter supplies three different versions of the Prototex HP-P, each optimized for a particular set of applications. The Prototex HP-P (1) has a substrate of HSS-E-PM and a TiCN coating and is particularly effective in unstable conditions. HP-P (2) has an HSS-E substrate with a TiCNX coating and delivers high tool life under normal conditions. The HP-P (3) features an HSS-E-PM substrate and TiCNX coating and can deliver exceptional tool life under good conditions. The Prototex HP-P is currently available via quotation through Walter’s Specials Department.

Walter has expanded its range of tough, reliable and long-life standard solid carbide deep-hole drills with the Titex X·treme D40 and the X·treme D50. Previously, the standard range of XD drills reached up to 30xD, with longer tools up to 70xD available as special versions. Now the X·treme D40 and D50, with their respective 40xD and 50xD drilling depths, significantly increase that range. XD (extremely deep) technology enables holes to be drilled in one operation without pecking, in steel, cast iron or non-ferrous metals.

Built with the latest production technology, the X·treme D40 and D50 drills also have an advanced TiALN-tip coating for a long tool life. Additional features include internal coolant channels for optimum heat dissipation and reliable chip evacuation. The latter is also supported by polished flutes. Four margins keep the drill exactly on its intended course. These features ensure a high level of process reliability, even with angled hole exits or cross holes. A high-pressure coolant system is not required – in order to plunge without “coming up for air” a standard system with a coolant pressure of 580 psi (40 bar), such as is integrated in all machining centers, is sufficient.