Balance Systems > Absolute balancer to improve the grinding quality in operations

Italy, Pessano con Bornago – The know how inside the “head”

balance-systems_types-of-unbalances-1024x508

Types of unbalances.

The know-how sits inside the “head”

The latest generation of automatic balancing systems Absolute Balancer do not only reduce machine downtimes, at the same time they are improving significantly the grinding quality in operation.

Recent developments also make them adaptable to meet different grinding tasks.

Absolute Balancer, balancing head operates inside the grinding spindle

On state-of-the-art grinding machines the balancing head operates inside the grinding spindle, and therefore well hidden away. Meaning it gets easily out of sight.

Nevertheless it plays a central role for achieving maximum grinding quality and minimizing downtime.

A highly sophisticated interaction of mechanics, electronics and advanced software makes this possible. Reason enough to take a closer look at this system with its numerous possibilities. The main task of balancing systems on grinding spindles was and still is the recognition and correction of unbalance.

This is caused by the geometric deviation of the grinding wheel from its ideal cylindrical shape, and tolerances in and around the wheel flange.

grinding-spindle-with-high-degree-of-dynamic-unbalance

Grinding spindle with high degree of dynamic unbalance.

Types of unbalances

When using narrow grinding wheels only, we speak of a static unbalance, same as we all know when balancing our car wheels.

Wider wheels or numerous grinding discs on the same spindle generate also a couple unbalance, so that in real grinding operation dynamic unbalance occurs. We see high dynamic unbalance in processes like gear grinding, centerless cylindrical grinding and in multiple grinding wheels operation.

To detect and correct a static unbalance, a one-plane balancer system is necessary, for the precise correction of dynamic unbalance a twoplane balancer is indispensable.

A combination variously used to correct a dynamic unbalance on the spindle is a manual pre-balancing followed by automatic unbalance correction during the grinding operation. This combined two-plane balancing method however is just a compromise, gradually becoming less attractive, since this correction process is producing additional machine downtime in highly productive grinding operations.

balance-systems_balancing-precisions-and-balancing-times

Balancing precisions and balancing timesdynamic unbalance.

Absolute Balancer Technology

Since its foundation back in 1975, Balance Systems is dedicated of detecting and correcting unbalance of rotationally symmetrical devices.

The original Company development objectives, minimizing the residual unbalance and reducing the necessary balancing cycle times, apply up to today.

In the meantime however, Balance Systems has reached a technological level in terms of compensation speed and achievable balancing accuracy which fully meets the demands of today’s highly sophisticated precision grinding industry.

Were weight masses on previous balancing head generations still driven in pairs, today’s correction weights of the Absolute Balancer series are all moved individually.

High-precision micro-gears ensure a positioning accuracy on the circumference of less than a tenth of a degree. Through continuous development of software and hardware components the required balancing time has also been drastically reduced.

Today’s Absolute Balancer system uses fully digitized hardware architecture together with sophisticated, adaptive algorithms for correcting the unbalance.

This means by intelligent pre-calculation of the necessary corrective path, the balancing masses are driven individually, and in closest distance, to their final predetermined position. Time consuming communication with the spindle mounted accelerometers is limited to a minimum.

Thus, for predetermined balancing parameters, deterministic balancing times are achieved. The following graph shows the achievable balancing precisions and balancing times for the different Balance Systems balancer series in one and two planes:

balancing-system-in-torque-free-neutral-position

Balancing system in torque-free neutral position.

Torque – free neutral position

At Balance Systems the use of identical correction weight masses has always been a standard. For physical reasons, this is the only way to bring the balancing head in a torque-free neutral position.

This is particularly important after the change of the grinding wheel, since from this basic position the balancing process can be started without risk.

 

 

balance-systems_adaptive-correction-weight-kits

Adaptive correction weight kits.

Adaptive correction weight masses

The basic idea of identical balancing weight sizes opens up the option of scalable balancing masses. With materials and alloys of different density, different weight kits can be generated. Thus, the balancing head of the grinding spindle can be optimized for the use with different grinding wheel dimensions and grain qualities (corundum, CBN).

 

 

More info about: Balance Systems

 

 

 

Previous B&R Automation > SuperTrak Industrial transport system: efficient production at any batch size
Next Baumer > CleverLevel LBFS with more interfaces for optimized communications

You might also like

Wittenstein > Corrosion resistant gearhead and drive solutions with hygienic design

      Driving in a hygienically clean environment Hygienic Design gearheads, brushless DC motors and servo actuators made by WITTENSTEIN currently on show at IFFA IFFA, the leading international

Missler Software + Audros Technology > Technological partnership based on the exchange of data between CAD and PLM

  Opportunity to co-develop a simplified connector to exchange the data Audros technology, Audros Technical EDM and PLM software publisher, and Missler Software, TopSolid CAD/CAM/ERP software publisher, announced their technological

Baumuller > Development partnership for sustainable solutions

    Development partnership for sustainable solutions The expansion of the innovation leadership in automated welding technology is the target of the cooperation of the companies Cloos and Baumüller. By

> EMO Hannover 2017 – Germany’s President Frank-Walter Steinmeier will be opening the EMO Hannover 2017

  Germany’s President Frank-Walter Steinmeier will in September be ceremonially opening the EMO Hannover 2017. “We are absolutely delighted that our head of state will be honouring the EMO Hannover

Schaeffler > Technologies for hybrid and electric vehicles

    Technologies for hybrid and electric vehicles. Schaeffler is expanding in the electric mobility sector Energy efficiency, environmental friendliness, and the associated rapidly growing number of hybrid and electric vehicles

Hasco > nameplate A6500, simple and efficient in injection moulding production

    HASCO nameplate A6500/… – easily customised Speed is an important factor in injection moulding production. Processes need to be kept as simple and efficient as possible. And orderliness

ABB > Electric propulsion system saved over 700,000 tons of fuel for marine vessels

    ABB electric propulsion system saved over 700,000 tons of fuel for marine vessels so far ABB’s environmental friendly Azipod propulsion system brings greater fuel efficiency to diverse shipping

Roland Electronic > SIS XP Steel Cord Inspection Systemwas for production

SIS XP – Multilingual and flexible The SIS XP Steel Cord Inspection Systemwas developed for the usage in cutting and splicing equipment for steel cord.  It serves the purpose of

Aicon 3D Systems > stereoSCAN neo, arrive the new dimension in fringe projection

  Fast and highly precise capturing of complex surface structures – the high-end white light scanner stereoSCAN performs it. Now, however, here comes a scanner hat is able to accomplish