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QUICKPOINT

QUICKPOINT - Cylindrical grinding machines

Flexible high-performance grinding machine

High-speed grinding with QUICKPOINT combines JUNKER precision with maximum flexibility. QUICKPOINT ma-chines can be used for a wide range of applications, and at the same time boast impressive productivity. The result: versatility and excellent workpiece quality.

Highlights

  • High-speed grinding with sophisticated CBN/diamond grinding technology
  • Excellent part quality with one-time clamping of workpieces
  • Maximum availability with fully automated grinding process
  • Fast grinding speed with thorough coolant penetration of active grinding zone
  • Fast re-tooling with highly flexible machine concept

Grinding process descriptions

The QUICKPOINT Principle

Grinding with QUICKPOINT is OD high-speed grinding using single-point contact in the finish grinding area. QUICKPOINT works with an extremely low-wear CBN or diamond wheel just a few millimeters wide. By creating a relief angle, the contact zone between wheel and workpiece is reduced from a contact line to a contact point.

QUICKPOINT standard operations are shoulders, tapers, chamfers and plunge cuts. In addition, flute and thread grinding, as well as polygonal and surface grinding can also be integrated.

The QUICKPOINT Principle

Technical data: QUICKPOINT 1S

Wheelheader Number
1
Grinding Length
150 mm
Clamping Length
150 mm
Center Height
100 mm
Component Weight
5 kg
Grinding Wheel Diameter
350 mm
Swing Diameter
80 mm
WxDxH mm (without peripherals)
1800 x 2500 x 2100
Weight
10000 kg

Wheelhead QUICKPOINT 1S

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Technical data: QUICKPOINT 1000

Wheelheader Number
1
Grinding Length
150 mm
Clamping Length
150 mm
Center Height
100 mm
Component Weight
5 kg
Grinding Wheel Diameter
350 mm
Swing Diameter
80 mm
WxDxH mm (without peripherals)
1500 x 2500 x 2100
Weight
9000 kg

Wheelhead QUICKPOINT 1000

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Technical data: QUICKPOINT 3000

Wheelheader Number
1
Grinding Length
500 mm
Clamping Length
500 mm
Center Height
150 mm
Component Weight
15 kg
Grinding Wheel Diameter
350 mm
Swing Diameter
150 mm
WxDxH mm (without peripherals)
3400 x 2800 x 2200
Weight
12000 kg

Wheelhead QUICKPOINT 3000

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Technical data: QUICKPOINT 5000

Wheelheader Number
1
Grinding Length
700 mm
Clamping Length
700 mm
Center Height
170 mm
Component Weight
130 kg
Grinding Wheel Diameter
500 mm
Swing Diameter
280 mm
WxDxH mm (without peripherals)
4900 x 3400 x 2350
Weight
14000 kg

Wheelhead QUICKPOINT 5000

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Technical data: QUICKPOINT 6XS

Wheelheader Number
1
Grinding Length
500 mm
Clamping Length
600 mm
Center Height
170 mm
Component Weight
130 kg
Grinding Wheel Diameter
500/700 mm
Swing Diameter
280/320 mm
WxDxH mm (without peripherals)
3260 x 3750 x 2450
Weight
17000 kg

Wheelhead QUICKPOINT 6XS

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Technical data: QUICKPOINT 6S

Wheelheader Number
1
Grinding Length
1000 mm
Clamping Length
1200 mm
Center Height
170 mm
Component Weight
150 kg
Grinding Wheel Diameter
500/700 mm
Swing Diameter
280/320 mm
WxDxH mm (without peripherals)
4100 x 3750 x 2450
Weight
21000 kg

Wheelhead QUICKPOINT 6S

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Technical data: QUICKPOINT 6L

Wheelheader Number
1
Grinding Length
1800 mm
Clamping Length
2000 mm
Center Height
170 mm
Component Weight
200 kg
Grinding Wheel Diameter
500/700 mm
Swing Diameter
280/320 mm
WxDxH mm (without peripherals)
4900 x 3750 x 2450
Weight
24000 kg

Wheelhead QUICKPOINT 6L

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Technical data: QUICKPOINT 6XL

Wheelheader Number
1
Grinding Length
2800 mm
Clamping Length
3000 mm
Center Height
170 mm
Component Weight
300 kg
Grinding Wheel Diameter
500/700 mm
Swing Diameter
280/320 mm
WxDxH mm (without peripherals)
6400 x 3750 x 2450
Weight
28000 kg

Wheelhead QUICKPOINT 6XL

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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.

ABRASIVE
Abrasive

Depending on the application, the abrasive CBN or diamond is used. The basic bodies of the grinding wheels comprise steel or carbon. In conjunction with CBN, it can make sense to use a carbon base body: It is light, has vibration-damping properties and remains dimensionally stable even at high speeds.

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.

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.

CARBON GRINDING WHEEL
Carbon grinding wheel

All JUCENTER versions can also be equipped with carbon grinding wheels. Technical advantages are higher cushioning and reduced weight. There is also an important economic aspect: higher productivity thanks to longer tool life and dressing cycles, as well as significantly fewer wheel changes.

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.

LOADING SYSTEMS
Loading systems

JUNKER offers both internal and external loading systems for all its machine series, depending on customer and workpiece requirements. The loading systems can be combined with different infeed and discharge systems such as conveyor belts or custom tailored systems.

MEARSUREMENT SYSTEMS
Measurement systems

The measurement systems are also individually adjusted to the various workpieces and customer specifications. The measurement processes entail evaluating the recorded measured values and utilizing them for measurement correction in line with the prepared measurement strategy. A grinding wheel measuring system to determine the diameter, axial position and width of the grinding wheel completes the wide range of systems on offer.

Workpieces

  • Axle
  • Starter shaft
  • Drive shaft
  • Countershaft
  • Bolt
  • Bushing
  • Electric motor shaft
  • Excentric shaft
  • Stub shaft
  • Gear shaft
  • Piston pin
  • Piston ring
  • Motor shaft
  • Pump piston
  • Pump pinion
  • Pinion shaft
  • Pipe
  • Roller
  • Rotor
  • Worm wheel
  • Worm shaft
  • Spindle
  • Rod
  • Stator shaft
  • Stud
  • Turbine shaft
  • Valves
  • Cylinder
  • Rolling element
  • Shaft
  • Tool holder
  • Tool Blank
  • Gearwheel
  • Gear rod
  • Spigot
  • Cylinder rollers

Product Brochures

QUICKPOINT.pdf

Special solutions

Fast changeover for low downtimes –  the 3-point mounting system

Fast changeover for low downtimes – the 3-point mounting system

This system has been applied to the wheelhead, workhead and tailstock and shortens the machine’s tooling times.

  • Fast changeover and tooling times (< 2 min for center points, < 20 min for grinding wheels)
  • Easy-to-mount
  • Optimal centering
  • Axially mounted with screwed-on grinding wheel flange, allowing changeover in rotational direction
  • Concentricity: <= 2/1000 mm
Versatility pays

Versatility pays

With a wide selection of wheelhead combinations, the QUICKPOINT line offers OD grinding solutions for practically any application: from the compact QUICKPOINT 1000 for smaller parts, to the QUICKPOINT 5000 for medium-sized parts, all the way to the QUICKPOINT 6 for large workpieces. Wherever you use a QUICKPOINT, it guarantees a low-cost manufacturing process.

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