Finishing & Polishing Machines

Finishing & Polishing Machines

This method employs machines to perform a general deburring on the part by abrasive application. This includes wet and dry barrel tumbling, and vibratory deburring. Barrel tumblers work by filling a chamber with abrasive media and other compounds (wet or dry) that then deburr and polish the parts during the tumbling process.  Vibratory machines operate in much the same way through a vibration process and come in various configurations such as tubs, circular bowls or trough machines.

Some barrel tumblers and vibratory machines can be an economical option as far as low operator costs and can deburr and polish in one step. However, a disadvantage of the barrel tumbling system is that the parts strike one another, instead of gently rubbing together, and thereby increase the risk of surface gouges.

A wet deburring machine is typically 30 percent more expensive to run than a dry machine and involves the use of expensive chemicals to prevent corrosion. These chemicals, and the coolants used to run the machine, are hazardous waste and disposal of them is an expensive concern.

The disadvantage of the dry media tumbling process is that it’s much slower. Dry abrasives are lighter, so it generally takes two times longer to get the same deburring results as wet abrasives and is therefore not suited for high-volume production. Using compounds and abrasives may also cause some of them to remain imbedded in the parts and many of these machines are restrictive in the type of parts you can deburr due to the limiting size of the barrels or containers that hold the abrasives.


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