An operator strikes a chunk via manufacturing on MUM Industries’ RAS steel folding machine throughout FMA’s current Tech Summit plant tour. Lincoln Brunner
Whereas the road between panel bending and steel folding has turn into more and more blurry over time, what primarily drew MUM Industries to embrace the latter within the first place was fairly clear-cut: the power to fold bigger and thicker materials than it might in any other case.
MUM Industries, headquartered in Mentor, Ohio, manufactures personalized bins and enclosures from each steel and plastic beneath three subsidiaries: Integra Enclosures, Strongbox, and EMF Co. Along with amenities in Ohio and Texas, MUM Industries additionally operates three abroad places in Hong Kong, central China, and Belgium.
About half of the corporate’s enterprise comes from steel enclosures—primarily for electrical functions—that the corporate as soon as bent primarily on press brakes. A good portion of that work is completed on an RAS UpDownCenter 2 semiautomatic steel folding machine.
The corporate had hassle staffing its Dallas plant adequately popping out of COVID, so it bought the machine about 4 years in the past for that facility to assist resolve that drawback.
Nonetheless, as MUM checked out its total operation, maintaining that machine in Texas turned out to not present the identical productiveness as it could alongside the corporate’s different equipment in Ohio. That has so much to do with the product combine on the two amenities. Whereas the corporate’s Ohio plant produces the next quantity and decrease mixture of components than the Texas facility, the enclosures rolling out of Dallas are usually so much bigger (Texas being Texas and all). These enclosures are usually customized merchandise for oil area electrical installations, whereas the bins produced in Ohio are extra of the general-purpose selection that one would possibly see on the backs of vans, in parks, or in a variety of different random electrical installations.
So, up the freeway it went to enhance the corporate’s current arsenal of press brakes and different fabrication tools.
Growing Materials Dimension, Effectivity
MUM routinely creates enclosures from items of 12-ga. sheet steel 4 to five ft. lengthy—too lengthy and thick for different machines the corporate was contemplating on the time. The associated fee distinction between a folding machine and a comparable panel bending machine was negligible, so the choice got here right down to the dimensions and weight of the components MUM wanted the machine to make.
“The most important hole we have been attempting to fill was the power to constantly bend components that have been bigger in dimension,” stated Wealthy Holmes, MUM’s divisional director of operations. “We went backwards and forwards deciding whether or not we must always get a panel bender or a folding machine. A few of our components have been just a bit larger and thicker gauge than what a variety of panel benders have been providing then.”
Along with the sizes of MUM’s workpieces, labor shortages additionally performed an enormous function within the firm’s resolution to buy the folding machine. With the folding machine, MUM discovered a unit with controls intuitive sufficient for a novice to make use of—as evidenced lately when MUM gave a member of FMA’s Tech Summit tour group an opportunity to strive the machine out for herself. She was capable of bend her first half efficiently in about two minutes.
“The most important achieve is that you simply don’t want a talented operator to run the half after this system is established,” Holmes stated.
MUM decides which machines to make use of on which components primarily based largely on half complexity and quantity.
“We have been operating press brakes and nonetheless do for a big portion of our steel operation,” Holmes stated. “From our expertise, press brakes offer you extra flexibility, however the correct folding machine will can help you leverage a design or program that’s already established. For instance, you probably have a component that has three bends and run that very same half again and again, we’d in all probability run that half on the folding machine. It permits the operator to load it as soon as and hit all three bends, lowering the bodily stress on the worker and guaranteeing consistency.”
Conserving Up Appearances
One added wrinkle was MUM’s stringent surface-quality necessities, which exposes the salient distinction between steel folding and panel bending: the mechanism by which the fabric will get bent. Whereas panel benders usually have a C-style body and wipe materials up and down in a short time with servo-controlled blades, steel folding machines use a pivoting beam that swings round a set level to bend the fabric.
To take care of these surfaces, MUM makes use of a PVC coating on its steel all through the bending course of—an additional layer for which it wanted a bit additional lodging. Bending across the finish of the fabric slightly than wiping up and down towards it made the choice for MUM.
“Given our excessive beauty high quality requirements, we preserve the protecting PVC on the components till the ultimate operation each time attainable,” Holmes stated. “The RAS makes use of built-in rollers and suction cups that permit the PVC-protected materials to maneuver easily into place with out damaging the floor. As soon as the specified location is reached, the suction cups maintain the fabric securely in place throughout processing.”
When you’re doing small inner bends all day lengthy, a panel bender or a press brake might be the machine for you, stated Arron Kochanowicz, CEO of RAS Methods. Nonetheless, as in MUM’s case, in case your floor necessities are extra exacting and you’ve got a variety of completely different half sizes, a steel folding machine could be a greater match.
“One of many areas that we spend a variety of time on is stainless-steel due to the aesthetic nature of it and since we’re not wiping towards the steel, we’re truly bending round it,” Kochanowicz stated. “I don’t wish to overplay my hand right here. There’s methods spherical it with a press brake [or] a panel bender, however we naturally dwell in that. Folding machines are made to deal with aesthetically delicate components with numerous changeover.”
Setup and Tooling
The folding machine’s person interface additionally attracted the corporate’s consideration, particularly due to the convenience of use it provided to operators. The system’s software program can import STEP recordsdata (or a number of different file codecs), acknowledge bending strains and parameters, after which routinely program the bending sequence. It even shows a 3D bending sequence simulation—so much like one of many Mitsubishi press brakes the corporate has bought since however didn’t have on the time.
As for tooling modifications, the folding machine requires fewer than others. The tooling is available in heights from 250 to 600 mm, providing customers a better throat depth and the chance to bend a wider vary of half lengths on the identical tooling. As well as, not like press brakes, the identical tooling can be utilized to bend thicknesses from skinny gauge all the best way as much as 6 mm.
“One other factor we appreciated concerning the RAS on the time was that the show tells you, ‘Bend this primary, bend this second, bend this third,’” Holmes stated. “On the time, not a variety of press brakes had digital shows to indicate individuals what to bend first and second and third. That was a bit extra tribal and reliant on directions to advise anyone how you can construct one thing from a sequence standpoint.
“The instrument altering was only a lot much less frequent than an precise press brake,” Holmes added. “So, I feel these two issues have been fairly dramatic for us. Since then, I feel each press brake operator and each main OEM on the brake aspect are realizing that they need to have some digital path.”
One other apparent distinction with the RAS machine is that it’s semiautomatic slightly than a real load-it-and-leave-it automated cell. An operator hundreds and unloads every bit, setting it towards a CNC backgauge (very similar to a brake) to make sure accuracy. The machine makes use of suction cups to maneuver the fabric as soon as it has been positioned on the work floor after which does all of the bending and half rotation by itself.
“You get the repeatability and the accuracy that you simply get with full automation,” Kochanowicz stated. “However … you’ve an operator concerned who could be nimble with the state of affairs or do a fast changeover of components with out having to reprogram a whole totally automated piece of apparatus.”
