Category: Horn

HORN: New tools for Deep Axial Grooving

The new Mini 114 system from Horn enables a face grooving depth of up to 10 mm. The Tübingen-based tool manufacturer is thus further expanding the already wide variety of this product family. The insert is suitable for turning and copy turning of axial grooves. The user does not need a special tool holder, as the insert is compatible with the existing axial holder system. As standard, Horn offers the EG55 carbide grade grooving tools in three different types from stock with cutting widths of 2 mm, 2.5 mm and 3 mm. The minimum diameter for grooving is 14 mm, while the maximum is 34 mm to 36 mm, depending on the type.

The face-screwed inserts of the Mini system are one of Horn’s core products. The tool system is suitable for turning and milling applications. The precision tools have proven particularly effective for boring, internal grooving and face grooving. Paired with the low-vibration carbide tool holders, the inserts produce good surface finish even with long overhangs and ensure excellent process reliability. The Mini system’s broad portfolio offers inserts in various sizes for different internal diameters as well as different geometries and substrates and CBN or diamond tips.

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HORN: PTO Shaft Milling

Horn is expanding its tool portfolio for gear cutting to include types for milling PTO shafts. Manufacturers are increasingly focusing on the complete machining of drive shafts. Horn has standardised its own tool range for this purpose, which demonstrates high milling performance. The double-edged carbide insert S274 is used. The programme includes tools for PTO shaft sizes 1 3/8″ and 1 3/4″. The portfolio also includes special milling cutters for restricted shaft clearances. The M274 tool holders are equipped with an internal coolant supply for targeted cooling. The carriers have a diameter of 63 mm (2.48″) and 10 teeth.

 

Tractor attachments such as a mower or loader wagon do not have their own drive. To operate them, the mechanical drive energy of the tractor must be transferred to the attachment. This is done via the power take-off or PTO shaft. This drive, which can usually be switched on and off, is available at a secondary output of the tractor transmission. The energy can be utilised directly via a PTO shaft. A profiled shaft stub, which protrudes from the gearbox, is connected to the PTO shaft of the attachment by means of splined or involute gears. For operation, the user attaches the PTO shaft to the stub shaft in an axial direction. Rotationally symmetrical locks are used to secure the connection, which can be released easily and without tools.

HORN: High Performance in Stainless Steels

Horn has developed a new, solid carbide milling cutter range especially for machining stainless steels. The tools are for milling stainless materials in the food, chemical and pharmaceutical industries as well as the precision engineering and watchmaking industries. In addition, due to their geometry and good chip breaking, the milling tools are suitable for machining numerous other materials. Due to the precise combination of the substrate, the macro and micro geometry as well as the IG3 coating, the milling system exhibits high performance and long tool life. The coating in particular offers high temperature resistance for machining steels alloyed with chromium, nickel and molybdenum.

Horn offers the solid carbide milling tools from stock in two types. The DSHPR variant is suitable as both a finishing and a roughing tool. The geometry is also adapted for trochoidal machining and plunging. The DSR type, with its very sharp cutting edge geometry and short design, is suitable for very small parts and unstable clamping conditions, such as in the medical and watchmaking industries. In the DSHPR line, all tools are available with four teeth and in diameters from 2 mm (0.079″) to 20 mm (0.787″). Horn offers the DSR variant with three teeth in diameters from 1 mm (0.039″) to 10 mm (0.394″).

 

HORN: Superfinishing of Bores with Supermini System

At EMO 2023 in Hannover, Horn is presenting an innovative extension for the Supermini system in the field of ultra-fine machining. The precision tool manufacturer has added a variant with a precision-ground rake face to the Supermini system especially for ultra-fine machining of bores. Due to precision grinding of the cutting edge, it is free from notches when magnified approximately 200 times. The tool system can be used from an inside diameter of 0.3 mm (0.012″). The sharp insert geometry enables process reliability even with very small infeed and cutting feed rates. The specially developed coating is suitable for stainless steels, non-ferrous metals and other metallic materials.

The insert of the Supermini Type 105 system requires only one tool holder for well over 1,000 insert variants. This applies equally to left-hand and right-hand versions. The carbide inserts are available in coated and uncoated versions in different grades for every application including hard machining up to 66 HRC. The patented droplet shape of the cross-section has a vibration-damping effect and delivers excellent repeatability when changing the insert. Internal coolant supply to the insert increases tool life, enhances cutting performance and improves chip removal. Horn offers the tools with elements for face clamping. This allows, for example, the insert to be changed easily without having to remove the holder from the machine.

History Horn Supermini:

In 1989, HORN launched the technically superior Supermini system at the world’s largest metalworking trade show, EMO in Hannover, Germany. After considerable technical development, it was possible to successfully manufacture precision internal grooving tools for bores down to 5 mm (0.197″) in diameter. The Supermini system was born and over time became one of Horn’s most successful products. In addition, the Supermini system was the first precision tool to benefit from Horn’s own in-house coatings.

 

HORN: Optimized for Swiss Type Lathes

Optimized for Swiss Type lathes

Paul Horn GmbH has never stopped developing and optimising its product portfolio. At the same time, it has integrated almost 100 percent of the added-value creation into its own production. The range of applications of the tool systems has grown considerably. Today’s machining operations across a diverse range of materials constantly demand further development and adaptation of the tool systems. Grooving with indexable inserts has become indispensable in modern production. Radial grooving, parting-off, axial grooving and internal grooving to micron precision are now part of everyday life in industry. For such machining processes, Horn relies on the S224 insert system, among others.

Horn has revised the clamping of the S224 type indexable insert for use in Swiss-type lathes. In order not to have to remove the holder for indexing or changing the insert, the Horn engineers relocated the clamping screw to the side. Clamping now takes place via a camshaft. This allows the insert to be clamped quickly at either side of the holder without having to remove it. Furthermore, this type of insert also eliminates the need to invest in special quick-change systems. For the user, in addition to simple operation with a torque wrench, there is the advantage of reduced machine downtime due to faster set-up. Horn offers the holder system from stock in left and right versions as a 16 mm x 16 mm square shank. All variants of the holder are equipped with an interface for internal coolant supply from above and below.