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SATURN

SATURN - Double-wheel surface grinding machines

Double surface grinding

With SATURN double-wheel surface grinding, two vertical grinding wheels grind the workpiece simultaneously at its parallel end faces. With the through-feed grinding process, the grinding wheels are positioned slightly conically to each other so that the workpiece guided through the grinding zone has not reached its final dimension until it exits.
With SATURN plunge-cut grinding, the grinding wheels are arranged exactly parallel to each other. The workpiece carrier turns continuously at low speed. Both grinding wheels feed simultaneously until the final dimension is reached. Then the finish-ground workpiece is unloaded.

Highlights

  • High output
  • Automatic loading and unloading
  • Automatic measurement control
  • Long workpiece service life
  • Emulsion or oil as cooling lubricant
  • Simple grinding wheel change
  • Machine bed made of cast mineral
  • Automatic type detection

Grinding process descriptions

Through-Feed Grinding Process

Plunge-Cut Grinding Process

Technical data: SATURN 660

Grinding Wheel Diameter
660 mm
WxDxH mm (without peripherals)
3100 x 4000 x 1650
Weight
15000 kg

Technical data: SATURN 915

Grinding Wheel Diameter
915 mm
WxDxH mm (without peripherals)
3700 x 4000 x 2150
Weight
18000 kg

Equipment and Options

CONTROL SYSTEM
Control system

The Erwin Junker Operator Panel was specifically developed to control grinding machines. All machine components are controlled using the operator panel – irrespective of the series and the used control system. The identical structure, intuitive menu guidance and visualization of the workpiece geometry make for extreme user convenience and flexibility in operation. Programming takes place directly using the operator panel or an external programming tool.

MACHINE BED
Machine bed - mineral cast

The machine bed made of mineral cast provides impressive damping behavior and torsional rigidity. The temperature stability allows fluctuations in the ambient temperature to be compensated with a minimum of effort, ensuring a high level of dimensional stability throughout the whole day.

WHEELHEAD
Wheelhead

The extremely robust and inherently rigid wheelheads of the SATURN are guided in pre-clamped recirculating roller bearings, while the X-feed is carried out CNC-controlled via high-precision ball screws and servo drives  with glass scales. Swiveling and inclination of the grinding wheels are adjusted manually during setup. This can also be realized with NC adjustment as an option.

DRESSING UNIT
Dressing unit

Grinding wheel dressing is CNC controlled. A driven diamond dressing wheel or a workpiece-dependent diamond profile roller can be used. Dressing takes place manually or using an automatic dressing program with grinding wheel compensation.

WORKPIECE GUIDE PLATES
Workpiece guide plates

The infeed and discharge of the grinding zone on the SATURN is equipped with two opposing guide plates each. During the workpiece infeed the guide plates are adjusted to the unmachined part width and at the discharge to the finished part width. The left-hand guide plates are rigidly fastened on the SATURN 915 and serve as a reference level, while the right-hand guide plates are adjustable with NC axes. On the SATURN 660 all plates are adjustable via axes.

POST-PROCESSING MEASUREMENT DEVICE
Post-processing measurement device

The measurements system is individually adjusted to the workpiece and the customer's specifications. The recorded measured values are entered and utilized for measurement correction in line with the prepared measurement strategy. Their two dampened measurement probes are positioned on the discharge guide plates, and the control electronics with the display is integrated in the operator panel.

AUTOMATION OPTIONS
Automation options

The SATURN double-wheel surface grinding machine is equipped with automated feeding for virtually any workpiece.

FIRE PROTECTION AND LTA AIR FILTERS
Fire protection and LTA air filters

In case of an fire, the machine interior is automatically hermetically sealed, suffocating a fire before it has a chance to spread. If required, extinguishers (CO² or water mist systems) and exhaust air purification systems can be additionally installed. A competent partner for fire protection and filtration solution solutions is LTA Lufttechnik GmbH, which also belongs to the JUNKER Group and which researches, develops and produces filtration systems for industrial air purification.

Workpieces

  • Piston
  • Cardan joint
  • Conrod
  • Pipe
  • Rod
  • Rolling element

Product Brochures

SATURN.pdf
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Address:

Erwin Junker Maschinenfabrik GmbH
Headquarters
Junkerstraße 2
77787 Nordrach
Germany