Cutting Tools – NN Combined Engineering Agencies Pvt Ltd

HORN: Supermini System with HSK Interface

Horn is expanding the Supermini tool system with new holder variants. The holder range is specifically aimed at use in modern mill-turn centers. The tool manufacturer is thus reducing the number of interfaces between the insert and spindle compared to conventional chucks. This enables greater precision and higher process reliability. Horn offers the holder system with various machine interfaces, including: HSK-T63, HSK-E40 for Willemin-Macodel, HSK-A40 for Bumotec and HSK-T40 for all other multitasking machines. In all versions, the Supermini insert is located and removed using a face clamping and lifting system. Clamping is achieved not via the lateral surface of the tool, but via a wedge on the end face. This raises the force with which the insert is held, resulting in high rigidity of the overall system.

Boring, profile turning, internal grooving, threading, chamfering, axial grooving, drilling and slotting. The Supermini tool system can be adapted and used for numerous machining operations. The solid carbide insert is for machining bores from 0.2 mm to approximately 10 mm in diameter. Horn developed the tool blank as a teardrop shape, enabling precise contact surfaces in the tool holder. Furthermore, the shape prevents the insert from twisting, leading to a consistently precise tool center height. With long tool overhangs, it reduces deflection and minimizes vibration during the turning process. Depending on the application and the diameter to be machined, Horn offers the insert in three different sizes (types 105, 109 and 110). All variants allow for internal coolant supply directly to the cutting zone. The Horn tool portfolio contains approximately 2,500 different standard variants of the Supermini. In addition, Horn has solved users’ problems with countless customized solutions.

HORN: New Chip Breaker for the 274 Tool System

Superior Chip Control during Grooving and Parting off

Paul Horn GmbH has introduced a new chip breaker geometry for the 274 tool system especially for grooving and parting off on sliding-head lathes. The sintered chip breaker geometry 1A optimizes chip control during turning, ensuring a high level of process reliability. The universal geometry is suitable for machining various materials. The indexable insert with two cutting edges is available in three cutting widths of 1 mm, 1.5 mm or 2 mm. Maximum grooving depth is between 3 and 6 mm. The insert is available in TH35 and IG35 grades. An extensive range of holders is available for adaptation to different types of lathe.

When machining turned parts of small diameter, the centre height of the tool must be precise. Even small deviations in the centre height have a negative effect on the quality of the workpiece when machining very small parts. Ideally, the machine operator should be able to index the insert without having to readjust the centre height. With System 274, Horn offers excellent repeatability of less than 0.02 mm when turning the double-edged insert. This is made possible by precise peripheral grinding of the insert in conjunction with the stable insert seat.

HORN: New System for Grooving and Parting Off

S234 – this is the name of the newly developed parting system that Horn has developed especially for large grooving depths. The double-edged system enables a maximum depth of cut of 33 mm (1.300″). This means that diameters up to 65 mm (2.560″) can be parted off reliably and economically. The combination of high grooving depths, rigid clamping, high-performance chip breaker geometry and internal cooling makes the system extremely attractive in terms of price/performance ratio.

The inserts are available in cutting widths of 2 mm (0.079”) and 3 mm (0.118″). The corner radii are 0.2 mm (0.008″) and 0.3 mm (0.012”) respectively. The sintered EN geometry ensures reliable chip removal. Depending on the material to be machined, the inserts are available in AS45 and IG65 grades. Square shank holders in sizes 20 mm x 20 mm (0.787 x 0.787″) and 25 mm x 25 mm (0.984 x 0.984″) ensure stable clamping. Horn also offers reinforced grooving blades and tool holders for the modular parting and grooving system. All types are equipped with internal coolant supply.

Please contact us for more information on the new Grooving and Parting Off solutions from Horn.

JBO : SHARK Thread Milling Cutters

Long Tool Life, Short Processing Time and Excellent Surface Quality – three advantages of solid carbide thread milling cutters from Johs. Boss GmbH & Co. KG Präzisionswerkzeugfabrik, Germany. Available in a wide range of Thread Milling Cutters, Drill Thread Milling Cutters and Indexable Thread Milling Cutters including specials.

The SHARK high-performance Thread Milling Cutters from JBO offer precise thread machining – complemented by the G-thread range within the GFT series (solid carbide three-profile thread milling cutters).

General Advantages of Thread Milling

Threads to different tolerance classes can be produced with same cutter
Tool breakage does not necessarily entail scrapping of the workpiece
Less power needed for cutting internal threads
Short machining times due to high cutting speeds
Excellent thread surface finish
Short chips, hence no chip problems
Right and left hand threads can be produced in blind or through holes by the same cutter
Low cutting forces enable threads to be cut in thin wall workpieces
Cutting speeds and feeds can be matched individually to workpiece material
No change of cutter spindle direction of rotation required
No special tapping chucks required, standard chucks suffice
Threads can be cut to exact depth
Threads can be cut down to near bottom of blind holes
Start of thread accurately determined by NC programme

Please contact us to analyze your machining process and work out an optimized solution.

HORN: New Six-Edged Inserts with New Grooving Depth

Six-Edged Inserts with New Grooving Depth

With the 66T grooving system, Horn is expanding its tool portfolio in the area of six-edged indexable inserts. With six cutting edges, the insert offers an attractive price per cutting edge. The maximum grooving depth is 9.5 mm (0.374″). This is around 4 mm (0.157″) more than the sister system, 64T. Depending on the application, Horn offers inserts with two geometries and a version without geometry. The available geometries ensure reliable chip removal during machining. The IG65 carbide grade is used for machining stainless materials and difficult-to-cut materials. For general steels, Horn recommends the EG55 carbide grade for the 66T system.

The available cutting widths are 2.5 mm (0.098″) and 3 mm (0.118″). The corner radius is 0.2 mm (0.008″). The 1A geometry is suitable for pure groove turning operations, while the DL geometry is suitable for longitudinal turning in addition to grooving. The DL geometry is therefore also available with a corner radius of 0.4 mm (0.016″). The effective chip control of the chip breaking geometries ensures high surface quality on the groove flanks and the straight main cutting edge produces a cleanly finished base. Designed as neutral grooving inserts, they can be clamped in square shanks with internal cooling on both the left and the right side. Holder dimensions are 20 x 20 mm (0.787 x 0.787″) and 25 x 25 mm (0.984 x 0.984″). A clamping screw fixes the grooving insert precisely and securely in the central insert seat. Horn also offers type 220 clamping cassettes for the modular holder system.