What can the YOMI H beam plasma cutting robot replace, and how fast does it cut?

How does a robotic H beam coping machine replace sawing, drilling and manual coping?

In a conventional fabrication shop a beam travels through five stations: saw to length, hand layout with tape and soapstone, drill line, manual coping with a hand torch, then grinding for weld prep. Every transfer adds crane time, queuing and dimensional stack-up, and each layout is only as good as the fitter's eye that day. The YOMI H Beam Plasma Profile Cutting Robot (models YM-600 to YM-1500) collapses that whole chain into one data-driven pass: a six-axis robot with a Hypertherm XPR300A plasma torch processes all four faces - coping, notches, bolt holes, slots, bevels and web shaping - on H beam, I beam, channel and angle steel without re-clamping or re-marking. The geometry comes straight from the Tekla/DSTV or DXF file, so transcription errors disappear, and the beam leaves the cell ready for fit-up instead of stopping at a grinding station.

How fast does it actually cut - what is the real cycle time per beam?

YOMI's documented efficiency test gives a concrete benchmark: a 340 x 250 mm profile, 3500 mm long, cut with the Hypertherm XPR300 at 170 A (process No. 1152, air + oxygen), including single and double-sided beveling, over-welded holes on 6-8 mm spacing, and web shaped track, was finished in 8 minutes for the complete profile. That single cycle replaces what would otherwise be layout, sawing, drilling and hand-coping across four stations. Machine limits: cutting speed is 10-2000 mm/min with repositioning at up to 6000 mm/min, and profiles up to 5000 kg (customizable to 10,000 kg on the YM-CH1500) are handled on the roller conveyor system. Multiplied over a shift, one cell typically does the output of a multi-station manual line with a fraction of the labor.

Does it produce bolt-ready holes, or do we still need to drill?

Bolt holes come off the machine ready for assembly in most structural work. The Hypertherm XPR300A with True Hole technology produces bolt-ready holes in mild steel - cylindrical, dross-free walls that meet AISC/CISC requirements for thermally cut holes in structural bolted connections, so no reaming or drilling pass is needed for standard connections. The YOMI system also cuts over-welded holes on 6-8 mm centers for splices and shear-connector applications. One caveat worth knowing: for very high-slip-critical or oversized toleranced holes, some engineers still specify drilled holes, and the machine can leave those out of the NC file for your drill line. For the typical building and bridge beam, plasma True Hole holes go straight to fit-up.

When should I cut with plasma and when with oxy-fuel on this machine?

The machine carries both processes, and each has a clear lane. Plasma (XPR300A) handles pierce cutting from 1 mm to 45 mm and all bevel work up to ±45 degrees - it is fast, keeps the heat-affected zone narrow, and is the default for stainless steel, which oxy-fuel cannot cut at all. Oxy-fuel covers vertical cutting from 6 mm to 32 mm on carbon steel: it costs less per metre in gas, leaves no arc hardening, and on thick low-alloy flanges some fabricators prefer its edge for heavy welds. A practical rule: profile thickness up to about 32 mm and any stainless or bevel work goes to plasma; straight end cuts on thick carbon beams where speed does not matter can run oxy-fuel to save plasma consumables. Switching between the two is done in software, not by changing machines.

Can it cut stainless steel, and how heavy a beam can it handle?

Applicable materials are carbon structural steel and stainless steel - the plasma process cuts stainless cleanly where oxy-fuel cannot be used. On capacity, the standard machines carry profiles up to 5,000 kg, with customization to 10,000 kg available (YM-CH1500 configuration). Web height coverage scales by model: YM-600 for 100-600 mm, YM-1000 for 100-1000 mm, YM-1200 for 200-1250 mm and YM-1500 for 600-1500 mm, with flange widths of 100-600 mm and a 12 m effective cutting length. That spans everything from light secondary framing to heavy column sections used in towers and offshore structures.

How does the laser measurement compensate for mill tolerance on the beam?

Rolled sections never match nominal dimensions exactly - flanges tilt, webs sit off-center, and mill tolerance can be several millimetres. The YOMI cell uses laser cross-hair sensors to detect the actual web and flange position of each beam as it enters the cutting station, then shifts the programmed tool paths to the measured reality before cutting. Combined with Panasonic servo drives on every linear and rotary axis through zero-backlash planetary gearboxes, repeatability is about ±0.5 mm/1000 mm, and cutting length accuracy is ±1.5 mm over the full 12 m. This is the step that makes first-time fit-up possible: the robot cuts to the beam you actually have, not to the drawing's idealized profile, and a dynamic piercing function plus an anti-collision torch holder protect the head when a beam is badly out of tolerance.

How does robotic coping improve fit-up and weld quality downstream?

Fit-up quality improves for three reasons. First, bevel consistency: the ±45 degree bevels are produced in a single pass with the angle and lead-in taken from the Tekla/DSTV file, so the groove angle no longer fluctuates along the joint - welders see uniform gap widths and can run standardized parameters, with predictable filler-metal volume. Second, cut-face condition: the high-definition plasma edge is dross-free enough to weld directly, eliminating the grinding station that manual oxy-fuel coping requires. Third, accuracy: bolt holes and copes land within about ±1 mm of the 3D model, so trial assemblies bolt up without rework and field modification risk drops. Cutting to ISO 9013-2002, ISO 8206-1991 and JB/T10045.4 quality ranges, the cell feeds the welding line beams that fit on the first try.

What does the complete cell layout look like - what do I need on my floor?

The system is made up of four integrated zones in line: the cutting station with the six-axis robot and XPR300A plasma source; the profile feeding unit with traverse frame and clamp feeding trolley on the rail; the roller frame conveyor that carries the beam through; and the finished-profile conveying and storage station at the outfeed. The rail is sized for the 12 m effective cutting length, so plan infeed and outfeed conveyor runs straight and aligned, with crane or forklift access for loading 5 t profiles. Utilities: 380V three-phase power, clean compressed air above 7 bar for the plasma (about 4500 L/h flow), plus oxygen and fuel-gas lines if you will run oxy-fuel, and fume extraction because plasma cutting produces dust and UV. The whole cell ships in two 40 ft containers, machine weight about 17 t, and the layout can be customized to your factory space - full details and drawings on the product page: https://www.steelstructurer.com/pid18376141/H-Beam-Plasma-Profile-Cutting-Robot-Machine.htm

Technical Specifications of H Beam Plasma Profile Cutting Robot Machine

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Applications

The H Beam Plasma Profile Cutting Robot Machine is widely applied in steel structure prefabricated buildings, bridge and infrastructure construction, shipbuilding and marine engineering, heavy machinery manufacturing, power plant and industrial facilities, and offshore wind power structures.

Learn more about the H Beam Plasma Profile Cutting Robot Machine:
https://www.steelstructurer.com/pid18376141/H-Beam-Plasma-Profile-Cutting-Robot-Machine.htm

For more information about H Beam Plasma Profile Cutting Robot Machine and other steel structure intelligent equipment, contact YOMI CNC Cutting & Welding Machinery. Our team of experts is ready to help you find the best solution for your manufacturing needs.