Aquabond Knowledge Base

The truing of a diamond blade is an important step towards a repeatable and robust grinding process. Without this step the blade and/or the work piece can/will become damaged due to the “hammering” caused by excessive radial run-out of the blade(s) (Though in some cases a resin bonded diamond blade will “self-dress” itself into a “true” condition relatively quickly). This damage can lead to inconsistent blade performance and cut quality, and in extreme circumstance’s blade failure. Listed below are some truing options: 

Off-line truing systems

These systems are specifically designed  for abrasive blade truing.  Hight recommended for use with large, hard to true gang arbor assemblies.  Off-line truing systems have high throughput capacities due to it's specialized design and large diameter grinding wheel.  Also, dicing machines are not burdened with performing a truing operation. 

On-line truing systems

On-line truing can be as simple as a motorized break dresser or as systematic as a fully integrated system with automatic touch-off sensors and positional compentsations.  With the blades being tured on-line, there can be no mounting or remounting alignment errors.  The blades will not require a comprehensive balancing after on-line truing.  (as is the case after each off-line truing routine)

The hardware and consumables are relatively inexpensive. 

DRESSING

Blade dressing is an integral part of a precision grinding process (the self-dressing feature of most resin bonded diamond/cBN blades limits the need for dressing to the most demanding of applications). With an optimized dressing system and intervals the grinding/cutting forces will be stable and predictable. 

Use the manufacturer recommended dressing system (stick, plate or board) and process.  This will optimize the diamond protrusion for maximum blade life and cut quality.  Deviations from those recommendations should be executed with considerable caution. 

There are many variables involved with the selection of a dressing routine which include: 

• bond type
• bond hardness
• bond structure
• abrasive size and type
• abrasive concentration
• form and size

Generally speaking, the size of the abrasive particle used in the dressing system whether a stick, board or plate should be the same or slightly larger than the abrasive size of the metal or nickel bonded diamond blade being dressed.  The same size or smaller for a resin bonded diamond blade.