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hp tooling 2020 #2

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The journal of hp tooling is an english, global publication on all aspects of high precision tools, accessories and their applications.

materials & tools New

materials & tools New tooling system provides speed and accuracy Usable on multi-task machines Dormer Pramet has launched a high precision, quick-change tooling system for a variety of internal and external turning applications. Ideal for use on multi-task machines, the polygon shank coupling (PSC) is a spindle interface which promotes higher productivity through reduced set-up time and faster, more precise machining. It achieves this with a unique tapered polygon cone shank and flange surface, which supports a high degree of rigidity. With an accuracy in X, Y, Z directions of +/-2 μm, the PSC holders provide a high level of repeatability. In addition, a reduced overhang length minimises vibration and runout inaccuracy for a high-quality surface finish, making it ideal for aerospace and general machining applications. The polygon shank coupling (PSC) is a spindle interface which promotes higher productivity Connected by a triangular conical structure and cross section, which uses 1/20 taper, the PSC features internal coolant channels and a steel toolholder for high toughness. More than 130 different items are available, including a variety of tool holder styles, internal tools, interface types and shank sizes. information: www.dormerpramet.com New 32T grooving system Paul Horn GmbH has developed the new 32T system for use on Swiss-type lathes and for grooving and parting off on smaller fixed-head lathes. The tool manufacturer is expanding the tool system by introducing versions for threading, grooving and longitudinal turning as well as for full radius grooving. The central clamping screw offers high changeover accuracy of the cutting insert and direct entry into the insert seat of the tool holder. Addi tionally, there is no need for clamping ele ments, which The 32T system completes Horn’s portfolio of triple-edged inserts by offering a solution for smaller-scale applications could po tentially have a detri mental effect on chip flow. The head of the clamping screw does not introduce interference contours and therefore permits both grooving and parting off directly at the spindle. The precision-sintered grooving insert can be used as a neutral insert and as both a left-hand and a right-hand insert. The 32T system completes Horn’s portfolio of triple-edged cutting in serts by offering a solution for smaller-scale applications. To accommodate axial grooving operations with diameters ranging from 38 mm to 1,000 mm, Horn is now offering new holder variants for the S224 grooving system S224 face grooving system To accommodate axial grooving operations with diameters ranging from 38 mm to 1,000 mm (1.496" to 39.370"), Horn is now offering new holder variants for the S224 grooving system. The tool manufacturer is ex tend ing its modular concept so that various types of cartridge can be clamped using a single base holder. The internal coolant supply allows direct cooling in the contact zone while simultaneous ly increasing tool life. In addition, the high coolant pressure ensures improved chip removal from the groove. Thanks to the wide range of chip breaker geometries and substrates available with the S224 double-edged system, the tool system can be easily adap t ed to the machi ning task as well as the ma terial to be machined. information: www.phorn.de 18 no. 2, June 2020

materials & tools When time is what matters Corrosion resistant tool holder grade With Uddeholm Idun, the tool holder market is revolutionized, by offering a safe and reliable fast forward button to finished tool holders for indexable inserts. Uddeholm Idun is a pre-hardened and corrosion resistant steel grade, which makes the production a one-stop-shop where heat treatment and coatings will no longer be necessary. In today’s market, time is of the essence for tool producers. Recent years have seen an increasing trend in machining more tools in hard condition, not only to meet the market demand and shorter delivery times, but also to save both time and money on less heat treatment. Naturally the next step to further decrease the production time is to dispose of costly and time demanding coatings. Until now this has not been possible. Uddeholm Idun changes this by being the first patented corrosion resistant tool holder grade on the market. Corrosion resistance is requested both for its pleasing aesthetics, as well as to protect the tool holder from corrosion attacks. Uddeholm Idun has undergone comparison tests in a salt spray chamber according to SS-EN ISO 9227 in 0.1M salt solution at 35° C for 3.5 hours. The steel showed no corrosion, which proves that the corrosion resistance is at least in parity with nickel coating or better. Uddeholm Idun is meeting the market demands by being pre-hardened to 42- 46 HRc, a hardness range used for milling cutters. The steel is manufactured by electro slag remelting, which gives it an even microstructure with small carbides in a martensitic matrix. The hardness is even from the surface to the center. Although delivered in hard condition, Uddeholm Idun still offers good machinability. If wear resistance needs to be improved locally Uddeholm Idun can be induction hardened to 55 HRc on the surface. tend to get a soft surface due to the temperatures created when in production. When losing the surface hardness, the function of the steel is lost of course. ➤ starting material from recycled steel scrap ➤ corrosion resistant steel, no need for nickel platin ➤ delivered in pre hardened condition, no need for heat treatment ➤ no need for transportation for heat treatment and nickel plating Lower environmental impact Big savings in cost and time Uddeholm Idun has much better softening resistance than standard P20 type materials at a constant temperature of 450° C and it keeps a high hardness at 500° C for a long time. Competing materials information: www.uddeholm.com no. 2, June 2020 19

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