DRESSO MULTI-GRAIN TOOLS

DRESSO
MULTI-GRAIN TOOLS

DRESSO impregnated tools contain tiny diamonds or crushed diamonds.

Basics

DRESSO impregnated tools contain tiny diamonds or crushed diamonds. The size of the diamond grain may be selected in relation to the size of the wheel grain of the grinding wheel to be dressed. The cross section of the diamond grain therefore does not exceed a desired size, whereby practically only diamond tips are used. DRESSO tools therefore provide the result of new, sharp grain diamond throughout their lifetime. The aggregate size depends on the dimensions of the grinding wheel.

Benefits

The work surface of the grinding wheel cuts freer and is more slip-proof.
Reduction of grinding force.
Extension of dressing intervals.
High surface quality combined with high cutting ability of grinding wheel.
High commercial value due to faster dressing traverse speeds and longer tool life (reduction of downtimes).
Possibility of sharp-edged profiles on grinding wheels.

Notes

The dressing tool must absolutely be coordinated with the grinding process.
Sufficient cooling is absolutely necessary. This preserves the diamonds and increases the tool life many times over.
The dressing increment must be limited to a minimum (0.002 mm - 0.025 mm max.).
Never draw across the grinding wheel without infeed.
An important factor is to determine the optimal overlap rate. This is a critical contributor to the grinding results. The overlap rate results from the product of the effective width of the dressing tool and the rotation speed of the grinding wheel over the dressing traverse speed in mm/min.

Degree of overlap:

2 - 3	=	rough grinding	ud	-	degree of overlap
3 - 4	=	universal grinding	bd	-	effective-width of dressing tool [mm]
4 - 6	=	finishing	ns	-	revolution of grinding wheel [min-1]
> 6	=	superfinishing	vd	-	lateral dressing feed [mm/min]

v_d	=	b_d ^. n_s / u_d
u_d	=	b_d ^. n_s / v_d
u_dmax	=	grit size of grinding wheel [usmesh] / 15

NOTE! If bd > 3 mm for a multi-grain aggregate, then 35% of the effective width should be considered (d.h bd = d/3), since the grain portion is less than the effective width.

HAND DRESSING TOOLS

Dressing tools for hand dressing application
Hand dressing tools are appropriate for manually dressing or cropping all kinds of grinding wheels. These tools make it easy to make a worn-down wheel sharp again. Thanks to the design and the high diamond concentration in the aggregates, it is very easy to recover the roundness and the profile of the grinding wheel. At the same time, these tools possess a very long lifetime. In order to achieve the best results, DRESSO tools with the corresponding diamond grain should always be used for the various grain groups. During manual dressing, it is important to control the pressure and ensure consistent movement while drawing across the wheel.

DRESSING PLATES

Tools for perimeter and symple profile dressing
DRESSO multi-grain plates are especially useful for dressing simple profiles and for dressing circumference or the face in a single pass. The width of the dressing plate depends on the dimensions of the grinding wheel to be dressed. The length, on the other hand, depends on the customer‘s needs and requirements in terms of lifetime until the tool is due for replacement. DRESSO multi-grain plates feature a high degree of performance and flexibility. Please refer to the table below for the recommended dimensions of your DRESSO multi-grain plates corresponding with your grinding wheel dimensions. The resulting diamond grain of the diamond aggregate depends on the grain of your grinding wheel. Make sure that a plate is always drawn across the wheel and never bounced to hinder unwanted vibrations.

DRESSING FOR EXTERNAL GRINDING

Dressing for external grinding
In order to achieve the best results, the grinding wheels must be dressed with DRESSO tools featuring a diamond grain corresponding with the wheel grain. The multi-grain aggregates feature high economic efficiency. They achieve maximum cutting ability and possess a long lifetime. This reduces auxiliary costs and fitting times. DRESSO multi-grain aggregates enable faster traverse speeds compared with other dressing tools, and the surface quality remains consistent. For a clean, comma-free cut, the dressing in-feed should not exceed 0.03 mm. The tables below feature our recommendations for the DRESSO dressing tool to use according to the grinding wheel you need to dress. The round DRESSO dressing aggregate are especially useful for simple, economic circumference dressing of grinding wheels for round, flat, centreless, profile, and tool grinding.

ROTATING MULTI-GRAIN DRESSING CUPS

Rotating multi-grain dressing cups (for CBNs and conventional wheels)
The requirements of materials that are ground are constantly increasing. This represents an increasingly important task for grinding equipment. The commercial effectiveness of the grinding process is also another point. For these reasons, grinding wheels featuring ceramic bonded CBN are being used more and more frequently. Dressing conditions also influence the surface quality of the piece being ground and the dressing intervals. Basically, the same dressing tools may be used for Korund or silicon-carbide wheels. Dressing with multi or single-grain diamonds is possible, but this is not commercially effective due to a high degree of diamond wear. For this reason, serial production of rotating dressing tools has become commonplace. A rotating dressing setup featuring fine adjustment is recommended for dressing ceramic CBN grinding wheels. If a machine is equipped with this kind of system, then all other dressing tasks, including conventional wheels, may also be completed. Aggregates featuring 10° outside angle enable the circumference and front side to be dressed simultaneously.

MULTI-GRAIN CUBES

Dressing tools for centreless grinding
DRESSO multi-grain cubes are high-performance dressing tools that prove to be especially effective in the area of centreless grinding. Their geometry makes them extremely robust, and the highly concentrated diamond aggregate lends your grinding wheel cutting ability with a high degree of surface quality. DRESSO multi-grain cubes significantly increase the number of pieces produced between dressing intervals.

THREAD CRINDING

Special tools for Reishauer, SIP, Niles ...

NEO DRESS AG features a standard assortment of special DRESSO dressing tools for grinding threading and gear wheels. An extract of these DRESSO aggregates is provided in the table below. If you cannot find the tool you require, please don't hesitate ta ask us.

DRESSING FOR INTERNAL GRINDING

Dressing for internal grinding

In order to guarantee clean, low-vibration dressing for internal grinding, NEO DRESS AG offers specially sintered DRESSO impregnated aggregate in the smallest diameter ranges. These guarantee sharp dressing, without the grinding item pressing away during dressing operation.

DRESSSET MHF-25

NEO DRESS AG also offers a system suitable for commercially effective dressing of ceramic grinding wheels with DRESSO rotating multi-grain dressing tools. A high-frequency spindle with compact frequency inverter and Pressure reducer unit for supplying sealing air.

Properties:
≫ highly exact
≫ best concentric run-out properties
≫ maximum smoothness
≫ stageless rotation speed regulation
≫ compact/maintenance freei
≫ CNC-compatible