FINE BLANKING PRESS

FMB 440

TECHNICAL PARAMETERS GALLERY TECHNICAL DESCRIPTION

• The FBM ŠMERAL 440 forming machine is a bottom-drive hydraulic machine for fi ne blanking.
• As opposed to regular cutting, two additional forces (retainers) are involved. This results in high-quality cutting and precise
  dimensions.
• Components that have a high waste ratio and require many fi nishing operations, such as reaming, grinding, or broaching
  are good candidates for precision cutting.
• Parts produced are used in all areas of working and private life: household appliances, automotive equipment, structural
  groups and instruments, machines using drive equipment, etc.

• High productivity and fl exibility.
• A highly rigid frame.
• Force is exerted independently of displacement position.
• An ergonomically-located control panel on a rotary console.
• Highly reliable.
• Ram speed regulation, ram movement reversal.
• The ram’s working stroke can be regulated.
• Octagonal sliding guiding.
• Automatic overload protection.
• A safety switch for stopping the cutting process and returning the ram to its initial position.
• Precise lubrication to optimise fi ne blanking and increase cost effi ciency.
• A tool clamping system for quick tool exchange.

TECHNICAL PARAMETERS

GALLERY

TECHNICAL DESCRIPTION

ADVANTAGES OVER REGULAR CUTTING:

• Smooth cutting surfaces without tearing or rupturing, without the necessity of further treatment, which can be assembled
  immediately.
• High precision of dimensions, fl atness and shape.
• Consistent dimensions throughout the entire production run.
• Quicker than regular production = up to 80% cost savings.
• Without cutting “shock” with less noise and vibrations.
• Fewer production steps during the cutting process and the combined cutting and shaping process.

PRINCIPLE OF MACHINE:

• Fine blanking requires the use of three forces: the shearing force, the retaining force, and the ejecting force.
• Each of the three movements of the press can be controlled separately.
• The material is clamped between the clipping punch, ejector, blanking die, and retainer with thrust edge.
• The thrust edge penetrates the material before cutting starts, facilitating the creation of a high-quality cutting surface.
• The component is cut while remaining fi rmly clamped on both sides between the clipping punch and the ejector. This leads to a higher-quality cut.
• The tool opens and simultaneously the cut piece clamped between the clipping punch and the ejector is released.
• The thrust plate removes the material from the clipping punch.
• The ejector ejects the stamping (including waste) from the blanking die; it is after that removed from the work area, usually using compressed air, sometimes by a mechanical arm (remover for pressed pieces).

FRAME:

• „O“ shape welded sheet metal frame is heat-treated to eliminate stress within the material.
• The frame is designed in order to have minimal deformation at the nominal force to allow off -centre loading within the entire of regular forging processes.

HYDRAULIC AGGREGATE:

• Drive of this type of machine is secured by a pump that brings the pressurised working fl uid into the press’ hydraulic cylinders – the main working cylinder, two rapid-lifting cylinders, and holders.

LUBRICATING SYSTEMS:

• Automatic independent oil lubrication circulation system of guiding laths of the ram, adjustment nut, gearweel, and pinion adjustment, with progressive distributors, equipped with a checking system and protection system.

RAM:

• Divided ram - the lower pulling ram (shearing force) and the upper holding ram (thrust force).

HOLDING (UPPER) RAM:

• Serves for holding of the edges of the drawn sheet metal during the pulling and prevents their corrugation.
• A forging from one piece of cast steel alloy.
• The ram has standardised T-grooves for a attaching of fi xed part of the tool.

PULLING (LOWER) RAM:

• Fixes the moving part of the working tool and transfers the force from the hydraulic cylinder to the moulded material.
• A forging from one piece of cast steel alloy.
• The ram guiding is octagonal to achieve highly fi ne cuttings.
• The lower surface of the ram is fi tted with a guide plate with an octagonal guiding and a plate for clamping the tools.
• The ram has standardised T-grooves for fi xing the moving part of the tool.
• The ram is fi tted with an adjustment stopper nut that serves to adjust the stroke.
• The adjustment nut is moved using an electromotor with a gearbox.

LOWER HOLDER:

• The lower holder is used when manufacturing technologically precise pressings.
• Hydraulic drive.

MAIN HYDRAULIC CYLINDER

• Adjustable.
• Nut with a stopper.
• Software control.

RAPID-LIFTING CYLINDERS:

• The two rapid-lifting cylinders serve as the ram’s quick approach to the pressing area.

CONTROL SYSTEM:

• Ergonomic placement of control panel on the rotary console.
• SIEMENS S7 - 300F or S7 - 1500F control system.
• SIEMENS TP1200 (12“ colour) or IPC677D operator panel.
• Remote administration via internet modem.
• Data archiving from detectors, sensors.
• Schneider Electric or SIEMENS switchboard instrumentation.
• Automatic ram off set with admeasurement.
• Possibility of proportional control of holder pressure.
• Electrohydraulic tool clamping.
• Possibility of equipment with semi-fi nished product position checking or semi-fi nished product drop checking in the tool.
• Possibility of expanding the electrical equipment for automatic forming lines.