Paul Horn GmbH presents the new 32T system for grooving and parting off on Swiss-type lathes and smaller fixed-head lathes. With a precision-sintered grooving insert and central clamping screw, the tool system offers high indexability of the cutting insert and direct entry into the insert seat of the tool carrier. Additionally, there is no need for clamping elements, which may have a detrimental effect on chip flow. The screw head of the clamping bolt does not introduce interfering contours and therefore permits both grooving on a collar and parting off directly at the spindle. The 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-edge cutting inserts by offering a solution for smaller-scale applications. By adding the new system to its range, the tool manufacturer is responding to customer requests for a triple-edge cutting insert system for Swiss-type lathes and other smaller turning machines, in particular in applications where space is at a premium.
The maximum groove depth of the system is 4 mm with a groove width of 2 mm or 2.5 mm. For grooving operations, the inserts are available with both straight and full radius cutting edges. Horn offers the indexable insert with a 15-degree chamfer for parting off. A cylindrically ground chip breaker geometry makes for reliable chip removal. The tool carrier is designed as a square shank of 10 x 10 mm or 12 x 12 mm cross section. Each version features an internal coolant supply and is available in both left-hand and right-hand designs.
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Witte’s new modular vacuum clamping chucks, available in dimensions of 200 x 300 mm, 300 x 400 mm and 400 x 600 mm, allows an expansion of the clamping surface in two directions. When using larger single or several individual plates, corresponding formats up to the multiple of the initial chuck are possible.
Clamping elements for securing to machine table, wire spiral hoses for connection to a vacuum unit, an operating tool for the assembly of blind plugs and plate adapters as well as a standard version rubber adapter mat are also included. By using a suitable machining strategy, parts with a surface of only a few square centimetres can be manufactured.
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The DoveLock Quick Change Jaw System from Kurt is reversible, and allows milling into the changeable jaw plates using the full volume of jaw material. It also gives allows for the machining of multiple steps on the same pair of jaw plates. By rotating the jaw plates and machining different steps on both sides, fewer jaw plates are required for those jobs requiring different steps.
It is available as a two component system consisting of two master jaws with four, low head socket cap screws and a hex T wrench, and a machinable jaw set consisting of two machinable aluminum jaw plates.
Once reserved for large production runs, automated loading and unloading of machine tools is now becoming more and more commonplace for small batches and individual parts. The goal is to reduce set-up times and enable round-the-clock production with low manpower requirements.
Above all, smooth interaction between clamping pallets, robot couplings, and palletising modules will become increasingly important due to the resulting boost in flexibility.
Starting Points
There are two basic starting points when it comes to the Machine tool automated machine loading. For large series, and also for very long machining times, automated workpiece change has proven to be of great benefit. In this case, workpieces are normally fitted directly onto a power chuck, such as a clamping block or a force-actuated multi-jaw chuck, by a robot or gantry.
For small and medium-sized series, automated clamping device replacement is more suitable. With quick-change pallet systems, clamping devices can be automatically mounted, positioned, and clamped to a reference value within seconds. Standardised palletising systems allow clamping devices to be replaced in a highly flexible way while ensuring a high degree of process stability.
In this case, workpieces and clamping devices are installed on clamping pallets, arranged in storage racks and successively transferred to the machining centre from the pallet storage rack. On the bottom of the pallets, there is a standardised interface to the quick-change pallet system.
Integral Components
Like an adapter, this interface links the machine to a wide range of workpieces. Not only that: Modern pallet systems also feature a side interface so that they can be connected to a robot or gantry in a way that ensures process stability. This makes them an integral component in machine tool automation, as they meet three key requirements: flexibility, precision, and cost-effectiveness.
Today’s most comprehensive and innovative range of modules for automated machine loading includes advanced clamping technology and gripping systems. Products range from quick-change pallet solutions for machine tools to standardised pallets and robot couplings to a wide variety of workpiece clamping devices in all shapes and sizes.
Schunk: Palletising Modules
The Schunk machine tool palletising module Vero-S NSA plus is a quick-change pallet solution for automated pallet changes. It has a flat design and provides a large amount of space in the machine room for workpieces and axis movements. It achieves pull-in forces up to 20,000 N and holding forces over 100,000 N.
These machine tool modules offer a precise hold, even in large-volume cutting operations, and if required, the palletising system can also be integrated directly into the machine table.
A positively driven airflow prevents shavings or dirt from impeding the automated changing process by cleaning the flat surfaces and the short taper. This allows the work surface of the pallet to remain chip-free and flat. Through dynamic pressure monitoring, all process steps can be monitored: module open, module close, and pallet presence.
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