AVB 850

TOP + FACE SHARPENING MACHINE WITH DOUBLE-WHEEL FOR CARBIDE CIRCULAR SAWS: ALL THE GEOMETRIES OF TEETH UP TO Ø850MM.

ELITE AVB 850. THE CONCEPT.

The ELITE model AVB 850 is our sharpening machine for the top and the face of all common tooth geometries in circular saw blades with carbide teeth for diameters from ø100 to 850 mm.

Total grinding time (face + top): just 12 minutes and 33 seconds.

The double-grinding wheel system allows for complete sharpening of the face and top in a single setup: when the machine finishes sharpening the face, it automatically adjusts to sharpen the top, or when it finishes sharpening the top, it automatically adjusts to sharpen the face. Remove the finished saw from the machine!

Face + top grinding in a single setup: ELITE AVB 850 model

Sharpening of the top geometries in one-pass for tooth types:

• Flat, inclined, alternating, alternating with bevel, pointed, trapezoid, trapezoid-flat, pointed-flat, alternating-flat, trapezoid-trapezoid.

With 5 CNC axes for complete machining of all common tooth geometries in one cycle, particularly short strokes ensure fast sharpening operation.

Fully enclosed cabin for silent operation with a very fast door opening system that guarantees quick placement of the saw blade and access door for maintenance.

SHARPENING THE TOP OF THE SAW BLADE: PROGRAMMING

The touchscreen for quick and easy programming.

The tooth shape can be selected at the bottom of the screen. The data required for tooth sharpening appears in the center of the screen when the tooth type is selected.

You can choose the sharpening order: first sharpen the top of the tooth, then the face; or in reverse order: first the face and then the top.
The machine will automatically sharpen the entire saw teeth (top + face) to obtain a completely finished saw.

STANDARD TOOTH TOP SHAPES

SHARPENING THE FACE OF THE TOOTH: CREATING THE PROGRAM

The face sharpening programming screen allows you to select, among other things, the type of grinding wheel sharpening: Start sharpening, move the wheel away, and exit without sharpening. Or start sharpening and exit polishing with the wheel.

You can select the direction of rotation of the grinding wheel: left, right, or reverse direction for each tooth. You can also select the speed of rotation of the grinding wheel.

The tooth shapes allowed are varied: flat tooth, side angle, angle on both sides, or a combination.

Grinding the shear angle

STANDARD TOOTH FACE SHAPES

BROKEN TEETH OR NEW TEETH

You can easily add and edit broken teeth or new teeth. This feature can then be activated or deactivated without having to change the entered values. Very useful, for example, for skipping broken teeth when sharpening the face, but deactivating this option when sharpening the back.

The machine is equipped as standard with the multi-pass sharpening program for retoothing discs with new teeth.

VARIABLE PITCH: Precision and flexibility for complex geometries

The Tooth Pitch mode on the ELITE AVB 850 allows for highly precise programming and adjustment of the distance between teeth, accommodating a wide range of pitches including variable pitch and special tooth configurations. This system ensures perfect synchronization between the saw blade’s feed motion and the grinding cycle, delivering consistent sharpening quality regardless of tooth design.

With its intuitive interface, the operator can manually enter the desired pitch or select from pre-set parameters. The machine automatically detects each tooth position and adjusts the feed smoothly and accurately, reducing setup times and eliminating indexing errors.

This mode is especially valuable for saws with complex geometries or mixed production runs that require frequent pitch changes. Its precision improves tool life and significantly reduces grinding wheel wear.

ELITE AVB 850. HOW IT WORKS

Automatic operation using 5 CNC axis:
A: Tooth pitch
B: Tooth cutting angle
C: Tooth bevel angle
X: Sharpening load
Z: Sharpening path

Easy to use control panel

The 10,1" color touch screen control panel allows creation or editing of a program while the machine is working on another program. Among the programmable values are:
• Tooth angle programming. The wheel axis is automatically positioned to the value entered in the program
• Tooth geometry
• Sharpening path
• Sharpening infeed
• Sharpening speed
• Tooth pitch
• Indexing finger feed rate
• Number of teeth
• Broken teeth

Up to 10 teeth/minute when sharpening triple chip-flat teeth geometry

Up to 10 teeth/minute for the most typical tooth geometry: triple chip-flat. All movements have been optimized to reduce downtime. Making the AVB 850 a really fast grinding machine, allowing a 96-tooth triple chip-flat circular saw blade to be done in less than 10 minutes.

Variable grinding wheel rotation speed from 2,500 to 5,000 RPM

Variable wheel rotation speed from 2,500 to 5,000 RPM. Includes a variable frequency drive as a standard feature, allowing you to adjust the wheel speed to the optimal value required and reduce energy consumption.

Integrated cooling system

Machine operates with water-soluble coolant or grinding oil for better sharpening quality and longer grinding wheel life time.
Integrated coolant system with 220-liter tank and removable grates for easy cleaning.

Easy access and maintenance

At the back of the machine we find the electrical panel at the bottom and the mechanical system at the top, both protected by their corresponding easy-access panel, which also reduces the total space needed for the machine.

ELITE AVB 850. EQUIPMENT INCLUDED

• Double wheel holder for sharpening the face and top teeth geometry on circular saw blades
• ø2 or ø3 mm indexing finger pin
• Device for serial sharpening of equal diameters saw blades
• LED lighting of the work area
• Ready for connection to an ELITE FILTRAmaq individual filtration system or a centralized filtration system.

ELITE AVG 850. SPECIFICATIONS

TECHNICAL REQUIREMENTS

Requieres 6 bar pneumatic air connection.
Connection voltage: 220/400V 2Ph 50/60Hz
Required connection power: 2.5 kW

RECOMMENDED OPTIONAL ACCESSORIES

• Saw blade holders for circular saw blades Ø200–450, Ø400–650, and Ø600–850 mm.
• Centering rings for circular saw blades bore holes, in different sizes.
• Reinforced saw holder

• Mist extraction equipment.

• Equipment for oil operation.
• Filtration system: ELITE FILTRAmaq UNO, SOLO, or PRO models. Filtration up to 2 µm. Recommended for improved sharpening quality.
  

SUMMARY OF MAIN ADVANTAGES

Affordable acquisition cost with excellent sharpening time. Reduce costs by grinding face and top in a single cycle, with maximum precision and speed.

5 CNC axis for fully automatic grinding of face and top on all tooth geometries in one single setup. More productivity, less operator intervention.

Operate the machine via a touch screen with guided menu: simple and fast to use.

No hydraulics, no complications: more uptime and lower repair costs.

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MACHINES COMPARISONS AT A GLANCE

| MODEL | TOP GRINDING | FACE GRINDING | BACK OFF GRINDING | SIDES GRINDING | AUTOMATIC MEASUREMENT |