The solution for control & precision

SBS Balancing

SBS Balancing – The Solution for Control & Precision

Dynamic Balancing Systems for Machine Tools

Industrial production also places high demands on grinding machines. Unwanted vibrations of the grinding wheel relative to the workpiece surface lead to surface defects, so-called chatter marks. Shape and dimensional accuracy also suffer when the rotating tool exceeds important tolerance values. Imbalances not only have negative effects on product quality. They can also affect the bearing life of the machine. The loss of mechanical energy also leads to increased power consumption.

In addition, customers are demanding higher accuracy from the workpieces they produce, while at the same time cycle times are shortening. Therefore, it is important to keep the vibrations of the grinding wheel low. In operation, sensors must be able to quickly detect rotational deviations and pass this information on to the operator or automated to other machine components in production.

The consequences of unbalance in summary:

Reduced surface quality (chatter marks)
Reduced dimensional accuracy on the workpiece, resulting in increased maintenance costs
High grinding wheel wear increases service and parts requirements
Wear on the headstock leads to machine downtime and repairs (expensive revisions)

ACCRETECH offers solutions for this purpose with the SBS balancing product line. If you use grinding machines in your production, you will find the appropriate sensors and inline components . ACCRETECH is your partner to achieve the required industry standard in terms of quality and accuracy for grinding applications.

Get an overview of the product range of our balancing products:

The ACCRETECH product range for controllers

SB-1000

Dynamic Balancing System

Increases workpiece quality by automatically balancing to within 0.02 microns
Longer life for grinding wheels, dressing wheels and spindle bearings
Cost effective

more info

SB-2000/2000-P

Manual Balancing System

Manual single- or dual-plane balancing
Measuring range from 30 to 100,000 rpm
Available in a removable and a permanently installed version

more info

SB-55xx Series

Automatic and Manual Balancing System

Increases work-piece quality with automatic balancing down to 0.02 microns
Four-channel capability reduces costs by allowing multiple machines to be balanced
Compatible with Profibus, Ethernet and USB 2.0 communications

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The ACCRETECH product range for cards

Manual Balance Card

Manual In-Process Balancing for Rotating Machinery

Single or dual plane manual balancing
Measurement range of 300 to 30,000 RPM
Maximum Grinding Machine Efficiency

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Auto Balance Card

Automatic Dynamic Balancing for Machine Tools

Improves part quality by automatically balancing to 0.02 micron
Balance Speed 300 to 30.000 rpm
Compatible with internal and external Balance Heads

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Hydro Balance Card

The Original Automatic Balancer for Machine Tools

Mass correction from 5 to 50,000 gcm
Balance Speed 300 to 30.000 rpm
Pre-Balance Function

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Two Plane Balance Card

Two Plane (Dual-Plane) Automatic and Manual

Automatic two-plane balancing system
Centreless and gear grinding machines with wide wheels
Milling and other spindles requiring correction in 2-planes

more info

The ACCRETECH product range for balance heads

External Balance Heads

External Flange Mounted for Grinding Machines

Two movable eccentric weights
Measurement range of 300 to 30,000 RPM
Bright graphic display in a sealed enclosure

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Internal Balance Heads

Internal In-Spindle Mounted for Grinders & Machine Tools

Operation from 300 – 13,000 RPM
Balance compensation range of 100 – 7,000 g•cm or larger
Placement of balancer inside the spindle

more info

Hydrokompenser

The orignal Automatic Balancer for Machine Tools

Capacity for mass correction of imbalance ranges from 5 to 50,000g•cm
Available in open or closed design
Calculation of pre-balance

more info

Balancer System Principle

The system operates on the principle of mass compensation for wheel imbalance. The balance head contains two movable eccentric weights, each weight is driven by electric motors through a precision gear-train. These weights can be repositioned to offset any imbalance in a grinding wheel.

Manual balancing consists of a manual balance control unit, a vibration sensor and RPM sensor. Manual balancing permits the operator to balance the wheel before operation by adjusting the fixed position or spread-angle balance weights. Consisting of a computer control unit, a vibration sensor and an RPM sensor, the SBS manual balancing solution detects and measures the imbalance, calculates the compensation needed to eliminate the imbalance and guides the operator in manually placing the balance weights at calculated positions. This solution provides a lower cost alternative for dedicated machine tool balancing.

Auto balancing is elegantly simple: a computer control panel, a vibration sensor, spindle mounted adaptor and a balance head either external (Flange Type) or Internal (Spindle Type) to the spindle.

Automatic balancing enables the operator to ensure proper balancing with just the push of a button. The SBS automatic balancing solution is comprised of a computer control unit such as the SB-5500, an SBS vibration sensor, an SBS spindle mounted adapter and an SBS balancer (in either external or internal configurations). Once activated, the sensor attached to the grinding machine measures the imbalance and transmits this signal to the control unit, which automatically adjusts the position of counterweights inside the balancer to automatically and dynamically eliminate the vibration of the machine.

Advantages of an SBS automatic balancer on your machine tool:

Less spindle vibration which means extended spindle and bearing life
Reduction in chatter, grinder burn, ‘ovality’ etc.
Improved surface finish
Improved roundness
Increased component repeatability
Increased wheel and dresser life
Wheels balanced in seconds – increased machine productivity
Elimination of time consuming ‘off-line’ manual balancing techniques such as the use of ‘knife edges’
Reduction in scrap and rework
In process system constantly monitors machine vibration and can be used for basic preventative maintenance