Showing posts with label pneumatic isolators. Show all posts
Showing posts with label pneumatic isolators. Show all posts

Wednesday, 7 December 2011

CMM Vibration Isolation



CMMs have traditionally performed the quality assurance function in labs and gage rooms off of, or away from, the production floor. Today, however, we are hearing much more discussion about putting CMMs into the factory environment. The measuring speed and accuracy of Coordinate Measuring Machines (CMM's) are improving every year. Newer CMM's are being designed and built which should function with repeatability right on the production floor.  


Machining, stamping and other operations produce plenty of vibration, and those processes should be floor-isolated. Still, energy can find its way into the CMM as a source of errors, so some type of vibration isolation is needed. The production floor may have presses or hammers near the CMM, which produce massive vibrations and can lead to grossly inaccurate readings on the CMM. Vibration is one environmental factor which can compromise a CMM's accuracy and repeatability. Without compromising accuracy, CMM manufacturers provide their users with the maximum levels of vibration which their machines are capable of withstanding. Ideally, if all components of a CMM, including the part to be measured, were to vibrate in unison at a specific frequency, amplitude, phase and orientation, no degradation in measured performance would result.
When isolation is required, it is typically low frequency (less than 25 Hz) vibration that requires attenuation. Dynemech Systems has over 20 years experience in vibration isolation. They are specialists in CMMs, Dynamometers, Electron Microscopes, Metrology Equipment. Dynemech’s pneumatic isolators Series DRAS and Series DLPM provide significant vibration isolation for metrology equipment requiring low frequency vibration control. Series DRAS are ideal for low-cost metrology equipment where there is no sudden loading across the table. Series DLPM are auto-levelling pneumatic isolators which can sense the load placed on the table and automatically level the table surface. Both these models are highly suitable for low frequency vibration damping.
Additionally, in case there is excessive vibration, Dynemech can also provide complete turnkey solution for the construction for an Isolated Foundation. We will provide complete engineering drawings and specifications with installation procedures. Installation supervision at the site can be handled by our team of expert engineers.

For more details kindly visit us:

Monday, 10 October 2011

Auto-Levelling Pneumatic Vibration Isolators


Fig1: Dynemech's DLPM Pneumatic Auto-Leveling Vibration Mount.


Dynemech's DLPM Mounts are low frequency vibration isolation pneumatic mounts. These Anti-Vibration mounts have auto levelling arrangement which consists of three isolators for 3-point precision levelling. Each isolator consists of a levelling valve which is the load sensing and height controlling element. Systems are supplied with automatic height control valves, tubing and all other pneumatic accessories necessary for complete systems installation.

This finds application in passive vibration control of CMM, Surface Plates and all types of Precision Measuring & Testing Machines.

Dynemech DLPM Mounts have minimal setting time. Long setting time using pneumatic isolators is not acceptable because precision measuring and positioning machines can suffer repeatability errors and
through-put losses.

These mounts are connected to continous air-supply and keep monitoring the load at 3 points and provide necessary levelling automatically. These mounts have been designed indigeneously in India and provide precise leveling accuracies of +/- 0.15mm over 1m.

Fig2: Surface Plate on Dynemech's DLPM Pneumatic Vibration Mounts.

Dynemech's Pneumatic Leveling feet provide low frequency vibration reduction and hence are very suitable for precison CMM machines or testing machines placed on top of surface plates.

Drastic reduction in passive vibrations affecting sensitive precision machines are the advantages of Dynemech’s Pneumatic Isolators besides providing long-term safety and life for the machine.