Assessing The Security Of Magnetic Workholding

Resistance to the implementation of magnetic operate holding normally starts with a concern for safety. These issues might be allayed by assessing the technologies, holding energy and optimal operating situations of magnetic function holding in terms of operational security.

Regardless of the competitive check my site positive aspects of magnetic workholding in minimizing expenses and improving productivity, there nonetheless exists a resistance to the implementation of magnetic technology because the main operate holder in machining operations. This resistance ordinarily begins using a concern for safety. By assessing the technologies, holding energy and optimal operating conditions of magnetic function holding relative to operational security, these concerns can be allayed.

Magnetic Work Holding as a Protected Technology

If a machine operator has held workpieces with mechanical clamps for decades, the concept of relying on magnetism to hold workpieces, specially in heavy milling operations, boils down to an issue of trust: Is this definitely safe? Whilst understandable this opinion is rooted in subjectivity not objective fact. Greater than likely, people who hold this point of view may not completely have an understanding of the facts of how safe magnetic operate holding is.

So, how can magnetic work holding be thought of as a protected technology? By definition, it produces a uniform, consistent, and infinite holding energy that does not loosen up, give, or decrease until an operator de-energizes it.

Generally, magnetic work holders are constructed with an array of individual magnets embedded into a magnetic chuck or plate. Each magnet includes a north and south pole across which flows magnetic power known as flux. When a workpiece is placed across the poles of these magnets, flux flows into it. When placed within this flux field, a magnetic field of opposite polarity is induced into the workpiece thereby making a magnetic attraction among the chuck and the workpiece. This attraction will stay consistent, uniform, infinite, and trusted so long as the magnetic field is energized. This reliability makes magnetic workholding a actually protected technology.

Magnetic Perform Holding as a Secure Holding Force

Holding energy or strength is another factor considered when forming an opinion regarding the safety of magnetic workholding. If an operator will not understand how robust magnetic workholding is, he could mistakenly think magnetic technologies isn't robust sufficient to do the job safely. This opinion is often allayed by two details:

(1) magnetic workholding can possess a clamping energy as much as 1000 daN and

(two) based upon the application, an instantaneous clamping force of 12 tons per square foot could be generated by magnetic workholders. This level of holding force is greater than comparable to mechanical clamps with 1 extra benefit: magnetic holding force is uniform, continual and infinite until the operator de-energizes it.

Optimal Operating Conditions

To implement magnetic function holding solutions may perhaps require some training to understand the technology's optimal operating situations. As an example, magnetic perform holding is most effective employed with smooth-surfaced workpieces as opposed to rough ones simply because the smoothness decreases the air gap in between the workpiece plus the magnet; little air gaps improve magnetic attraction along with the holding bond. Some materials are much better conductors of magnetism than others. For instance, annealed supplies are ideal whilst hardened supplies don't absorb flux as simply and will retain some magnetism. This condition may be corrected within seconds with demagnetization. Lastly, the path from the holding force is yet another adjustment an operator may have to make to safely implement magnetic function holding. All magnets have one hundred percent clamping force straight away from the face from the magnet, but only about 20 percent clamping force against side forces. So, the geometry of a cut have to be considered in the machining process to reap the advantages of this kind of workholding.