Assessing The Safety Of Magnetic Workholding

Resistance to the implementation of magnetic function holding generally begins with a concern for security. These issues is usually allayed by assessing the technologies, holding energy and optimal operating situations of magnetic function holding with regards to operational safety.

In spite of the competitive http://www.pdqwh.com rewards of magnetic workholding in minimizing charges and improving productivity, there nonetheless exists a resistance for the implementation of magnetic technology because the principal function holder in machining operations. This resistance normally begins with a concern for security. By assessing the technologies, holding energy and optimal operating situations of magnetic perform holding relative to operational security, these concerns is usually allayed.

Magnetic Function Holding as a Secure Technology

If a machine operator has held workpieces with mechanical clamps for decades, the idea of relying on magnetism to hold workpieces, in particular in heavy milling operations, boils down to a problem of trust: Is this seriously safe? Although understandable this opinion is rooted in subjectivity not objective truth. Greater than probably, people that hold this point of view might not completely realize the information of how secure magnetic perform holding is.

So, how can magnetic operate holding be regarded as a safe technologies? By definition, it produces a uniform, consistent, and infinite holding power that doesn't relax, give, or lower till an operator de-energizes it.

In general, magnetic function holders are constructed with an array of person magnets embedded into a magnetic chuck or plate. Each and every magnet includes a north and south pole across which flows magnetic energy known as flux. When a workpiece is placed across the poles of those magnets, flux flows into it. When placed in this flux field, a magnetic field of opposite polarity is induced in to the workpiece thereby building a magnetic attraction among the chuck as well as the workpiece. This attraction will remain consistent, uniform, infinite, and reliable so long as the magnetic field is energized. This reliability makes magnetic workholding a actually protected technology.

Magnetic Work Holding as a Protected Holding Force

Holding power or strength is an additional aspect considered when forming an opinion in regards to the safety of magnetic workholding. If an operator will not know how robust magnetic workholding is, he may well mistakenly think magnetic technology just isn't robust sufficient to do the job safely. This opinion is usually allayed by two details:

(1) magnetic workholding can possess a clamping power up to 1000 daN and

(two) depending upon the application, an instantaneous clamping force of 12 tons per square foot can be generated by magnetic workholders. This level of holding force is more than comparable to mechanical clamps with one particular more advantage: magnetic holding force is uniform, continuous and infinite until the operator de-energizes it.

Optimal Operating Conditions

To implement magnetic work holding solutions may possibly require some coaching to know the technology's optimal operating circumstances. For example, magnetic function holding is best used with smooth-surfaced workpieces as an alternative to rough ones for the reason that the smoothness decreases the air gap involving the workpiece along with the magnet; tiny air gaps increase magnetic attraction and the holding bond. Some components are much better conductors of magnetism than other people. As an example, annealed components are best while hardened materials don't absorb flux as simply and will retain some magnetism. This situation can be corrected within seconds with demagnetization. Ultimately, the direction in the holding force is yet another adjustment an operator may have to produce to safely implement magnetic operate holding. All magnets have 100 % clamping force directly away in the face on the magnet, but only about 20 percent clamping force against side forces. So, the geometry of a cut must be regarded within the machining approach to reap the advantages of this kind of workholding.