Cleaner, quieter and less expensive
2nd Quarter 2009
Other technologies
Cleaner, quieter and less expensive to run – these are not bad goals for any designer; especially if you are working in a field that is traditionally plagued by noise and contamination issues.
Suppliers of all-electric injection moulding machines (IMMs) claim many advantages for digital electro-mechanical vs. the hydraulic motion control systems their industry traditionally used.
These advantages include:
* Accuracy and repeatability – hydraulic fluid can heat up, hoses can expand, and valves can stick. These variables can all affect accuracy. Digitally controlled mechanical drives are more accurate over the long haul because they do not use those components.
* Set-up precision – digital control permits operators to set tighter over/under tolerances.
* Utility costs – all-electric IMMs require 50-90% less power than comparably sized hydraulic IMMs.
* Oil costs eliminated – the initial cost of oil purchase is removed from the cost equation, as are the ongoing costs for monitoring, disposal and cleanups.
* Clean-room ready – by completely eliminating the possibility of oil leaks, all-electric IMMs are the obvious choice for a host of medical, electronic and other such clean-room applications.
* Noise levels – plant noise is always under scrutiny from workers’ compensation insurance agencies. By replacing hydraulics with electromechanical motion controls, noise levels can be reduced by over 30%.
For more information contact David Horn, Measuring Instruments Technology, +27 (0)12 348 0569, [email protected], www.measureit.co.za
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