DIAHON develops and manufactures precision honing tools for honing machines, machining centres, turning centres and milling centres. Each tool is matched to the bore geometry, workpiece material, machining allowance and required surface quality. The result is an application-specific solution for repeatable and economical bore finishing.
The product range includes honing tools for machine systems from manufacturers including GEHRING, NAGEL, KADIA, SUNNEN, Delapena, Nissin, Fuji and Bates. Depending on the application, DIAHON supplies single-stone, multi-stone, shell, fixed-diameter or custom honing tools.
Typical designs and applications include:
The modular tool design allows many interfaces to be exchanged. DIAHON application engineers select the tool concept and honing stones to suit the component and process, taking account of the material, coating, machining allowance, bore geometry and required surface.
Applications include aluminium, free-cutting, tool and heat-treated steels, several grades of grey cast iron, and thermal spray coatings such as APS, LDS, CBC, RSW and PTWA/FeC. The range also covers CFC, graphite, Alusil, DISPAL, titanium-aluminium alloys, NiKaSil and hard-chrome coatings.
Would you like to select the right honing tool for your bore or optimise an existing honing process? Please send your enquiry to werkzeug[at]diahon.de.
Single-stone honing tools are high-precision, highly rigid tools for bore diameters from 4 mm to more than 70 mm.
At the start of the honing process, the tool rotates slightly off the bore axis. Its three-point support consists of one working stone and two guide pads. As material is removed, the tool aligns itself with the bore axis. The expanding honing stone removes material, while the guide pads support and stabilise the tool inside the bore.
Either the honing tool or the component must be mounted in a floating fixture. Single-stone honing provides highly effective correction of straightness, roundness and cylindricity.
Multi-stone honing tools are high-precision, very sturdy honing tools for honing of bores in a diameter range of 4 mm to over one meter. Several honing stones are arranged on the circumference of the tool. These are pressed by an internal cone against the bore, generating the desired honing material removal.
DIAHON multi-stone honing tools are significantly more efficient in comparison to single-stone honing tools in stock removal and in generation of the desired surface quality.
Multi-stone honing tools are designed as one-step tools or as double expansion tools (e.g., for plateau honing).
Shell honing tools are especially designed for bores with large interruptions (keyways) or for the reworking of unwanted rifled tubes. DIAHON shell honing tools are designed in various shapes (two, three or four shell segments) depending on the component design. Two-stroke cylinder, gear housing or parts with material mixtures are machined especially efficiently with shell honing tools.
Fixed-diameter honing tools are high-precision, highly rigid tools for bore diameters from 6 mm to approximately 100 mm.
The tools are preset to the required diameter and finish a bore in a single in-and-out stroke. Different honing allowances can be achieved depending on the tool design and surface requirements.
Fixed-diameter honing tools provide highly effective correction of roundness and bore size, including in heavily interrupted bores such as hydraulic housings and valve manifolds.
They are designed for milling centres, turning centres and general machining centres and are adapted to each application:
Custom honing tools are tools that cannot be assigned to the categories listed above: they include, for example, shell honing tools, coaxial honing tools for two different bore diameters, swivel stone honing tools for "freecut honing" in blind bores and tandem honing tools for special requirements such as honing wheel forks.
