Boring - Import export

Working Principle: The counterbore is machined to the preset depth by the simultaneous application of both a rotary and vertical or horizontal feed motion to the carbide cutting insert. While the cutting insert rotates in a circle around the counterbore, a feed gear mechanism ensures a continuous feed motion. The lathe-type refacing action provides smooth and closely fitting contact surfaces for oversize valve seat rings. Features: The motor drive unit of the VD4HD-ADM is identical with the motor drive unit of the VD4HD Valve Seat Refacing Machine and, therefore, is only required, if no VD4HD is at hand. Two types of exchangeable boring gear heads are available. The standard AV boring head is provided with a vertical slide for counterboring. The optional AVH boring and facing head is provided with a vertical and a horizontal slide for counterboring and facing the bottom of the bore.

Application The Hunger SHM is designed for precision honing of cylinder liners with bore diameter from 150 to 640 mm. Features • Air powered honing. Powerfull air motor for rotary motion of honing head, air hoist for stroke motion and, as an unique feature, air cylinders for stone feeding. • Superior control. Manual buttons are provided for fine adjusting setting of honing head RPM, stroking rate and stone feeding pressure. • Pressure gauges for displaying the selected setting of honing head RPM, stroking rate and stone feeding pressure. • Two-hand control actuation to protect the operator according to the stringent EC safety regulations. • Automated stroking between adjustable end stops. • Drawer-type honing liquid reservoir acting as support for the cylinder liner and mounted on casters for ease of loading and unloading the cylinder liner.

Application With the mobile honing machine PHM, the cylinder liners of large diesel engines can be honed in the crankcase when installed. The stationary honing machine base HMB is required for honing removed cylinder liners. An optional comfort control panel including the regulator valves and the manometer gauges can be provided at the lower end of the preassembled drive unit within easy reach of the operator while standing at cylinder liner level. A single central air treatment unit with air filter and lubricator is also provided for trouble free operation. Automatic stroking is available as a option. The stroking lenght can be adjusted by means of end stops.

Digital readouts from HEIDENHAIN are used in a wide variety of applications. They are deployed on machine tools, infeed axes on saws and presses, measuring and inspection equipment, dividing apparatuses, setting tools, production inspection measuring stations, and more. To meet such demands, these digital readouts can also be used in combination with numerous encoders from HEIDENHAIN. Digital readouts with multiple axes are primarily used on manually operated machine tools, where their practical cycles provide optimal support to the operator during milling, drilling, or turning. By instantly displaying the position in an easy-to-read manner, digital readouts enable a significant increase in productivity.

Zinner has a comprehensive range of HSS and carbide boring tools. The extensive spectrum of tools in the Zinner boring system enables you to find the right boring tool for your special job. Features of the modular drill The positioning of the inserts is optimised for a balanced distribution of cutting forces. The generous chip space ensures efficient chip removal. The diameter range is from 16 mm - 58 mm. Reamers are designed to optimise work processes – boring and reaming in one process. Tool systems Twist drills in solid carbide and HSS for mild and stainless steels. Deep hole drills up to 30 x D in solid carbide. 3-lipped drills for grey cast iron and aluminium alloys. Modular drills for various coatings for particular machining situations. Solid carbide drills High speed steel drills (HSS) Exchangeable tip drills Solid carbide end mills Polycrystalline diamond drills (PCD drills) Modular drills Deep hole drills

Reamers are designed to optimise work processes – boring and reaming in one operation. Achieving a precision hole is all about the selection of the reamer and the reamer diameter. Machine conditions and adapters are a decisive factor when reaming.

We have the right tool for almost every counterboring application in our range.

When drilling, it is vital to ensure than concentricity is < 0.02 mm. The fundamental problem when drilling: if the cutting forces are high, the feed rate must be reduced. The same factors apply when step-drilling.

There are many different processes for forming screw threads. The usual method is to machine the thread but threads can also be formed with a thread moulder. The reason is that if the thread is shaped by plastic deformation rather than by cutting, no material is lost. However, thread moulding can only be used on materials with good cold formability.