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Liebherr - Gear Shaping - LS Series

With the machines LS 80 – LS 180 Liebherr is introducing a new series of production gear shaping machines. The performance and flexibility of these machines are optimized for high production requirements.

The machines are based on a common modular platform with proven components from the hobbing machine platform. Especially noteworthy are the direct table drive and the thermo-symetric, liquid-circulated machine bed.

For small face width parts, a RAPID version with max. 3000 strokes/min. is available. For tapered gears all models can be equipped with a swivel-type column for up to 12 swivel angle.

For the dry machining process, efficient and fast chip separation is a major prerequisite. The process energy involved and the disposal of hot chips should not adversely affect the geometry of the machine. The redesigned work area with stainless steel lining improves the chip discharge.

The extremely short cutting times require short loading and unloading times. Modular automation systems are available for various types of workpieces, supplemented by integrated and peripheral workpiece storage systems.

 

 

Available models

Model Name
LS 80 / LS 120 / LS 150 / LS 180
Max. cutting diameter (mm)
80 / 125 / 150 / 180
Max. nominal module for steel (mm)
3 (5)
Stroke length (mm)
30 (55)
Gear width (standard) (mm)
26 (48)
Table diameter (mm)
145
Table speed (min-1)
150
Center distance spindle/table (min. mm)
-35 to -25
(max. mm)
+220
Spindle inclination (Grad)
-0.5...+0.5
Max. Stroke speed (Standard) (DS/min)
1,500
Max. Stroke speed (option) (DS/min)
1,800
Max. Stroke speed (option) (DS/min)
3,000
Weight of machine with tailstock column (appr. kg)
13,000
Total connected load (appr. kVA)
30-40

Key features

  • The machine bed serves as platform for various gearing technologies.
  • Our backlash free and high dynamic gear driven table drives meet all demands regarding speed and accuracy.
  • Machines are delivered with Siemenscontrol in connection with Siemens-drives.
  • The tailstock column enables manual and automatic loading / unloading of bore- and shaft-type parts for dry and wet machining.
  • The high performance of the machine requires low downtimes and an easy maintainability.
Model Name
LS 200 E/ LS 300 E / LS 380 E / LS 500 E
Normal module (mm)
8/12
Max. cutting diameter (mm)
200 / 300 / 380 / 500
Stroke length (mm)
120/240
Centre distance cutter spindle / work table (mm)
-50 ... +450
Axis angle cutter spindle / work table (deg.)
± 0.4
Column swivel axis
-1 ... +12
Stroke position range cutter head slide (mm)
650/300
Stroke speeds infinitely variable as standard (DS/min.)
1,200/1,000
Feed rotary axis cutter (mm/min.)
3,750
Total weight (approx. kg)
20,000 - 21,000

The Liebherr gear shaping machines are optimally tailored for universal use. The machine´s movable shaping head design allows manufacturing of a variety of parts with minimal setup times. With the variable height of the cutting head, it is also possible to cut multiple gears in one setup.

The machine concept is based on a modular platform system, with component groups that are also used for the Liebherr hobbing and grinding machines. This permits cost effective manufacturing of individual components. The machine concept is suitable for wet processing as well as dry processing in equal measure.

Key features

  • Maximum flexibility in production
  • Machining of external and internal gears
  • Gear shaping of cluster gears with different helix angles
  • Easy programming of helix angle up to 50° with correction facility
  • No more time-intensive machine set-up
  • Programmable lead modifications

Fields of application

  • Small- to mass production with high levels of parts variance
  • Universal contract manufacturing of small batch sizes
Model Name
LS 200 F / LS 300 F / LS 380 F / LS 500 F
Normal module (mm)
5
Max. cutting diameter (mm)
200 / 300 / 380 / 500
Stroke length (mm)
70
Centre distance cutter spindle / work table (mm)
-50 ... +450
Axis angle cutter spindle / work table (deg.)
± 0.28; ± 0.5
Column swivel axis
-1 ... +12
Stroke position range cutter head slide (mm)
400
Stroke speeds infinitely variable as standard (DS/min.)
1,500
Feed rotary axis cutter (mm/min.)
3,750
Total weight (approx. kg)
18,000 - 19,000

The Liebherr gear shaping machines are optimally tailored for universal use. The machine´s movable shaping head design allows manufacturing of a variety of parts with minimal setup times. With the variable height of the cutting head, it is also possible to cut multiple gears in one setup.

The machine concept is based on a modular platform system, with component groups that are also used for the Liebherr hobbing and grinding machines. This permits cost effective manufacturing of individual components. The machine concept is suitable for wet processing as well as dry processing in equal measure.

Key features

  • Machining of external and internal gears
  • Good static and dynamic stiffness
  • High cutting speeds, even with small gear width
  • Maximum productivity in all applications
  • Improved gear cutting quality
  • Longer tool life

Fields of application

  • Mass production with low levels of parts variance
  • Contract manufacturing of large volumes
Model Name
LS 600 E / LS 700 E / LS 800 E / LS 1000 E / LS 1200 E / LS 1400 E / LS 1600 E
Max. normal module (mm)
8/12
Max. cutting diameter (mm)
600 / 700 / 800 / 1,000 / 1,200 / 1,400 / 1,600
Stroke length (mm)
120/240
Centre distance cutter spindle / work table (mm)
0 to 1,130
Axis angle cutter spindle/work table in conjunction with column swivel axis -1 ... +12° (deg.)
±0.15 /±0.28 /±0.4 (according to shaping head)
Stroke position range cutter head slide (mm)
550-750
Stroke speeds (DS/min.)
1,200/1,000
Feed rotary axis cutter (mm/min.)
4,000
Total weight (approx. kg)
21,000-26,000

The Liebherr-Gear Shaping Machines are a synonym for gear wheel production at the highest stage and stand for high quality, economy and productivity. This is not least due to the modular platform system, which enables the alternatives of different platforms. By selecting the corresponding modules, the machine can be adapted optimal to the respective process. Depending on the corresponding application, it is possible to select between a electromechanical and hydraulic shaping head. The hydraulic shaping head is used for machining of big gears and big module. The electromechanical shaping head provides advantages at high stroke rates and in connection with the NC-helical guide. Furthermore, the constructive execution enables the production of the most various components with minimum setup effort.

Key features

  • Moveable cutter head slide
  • 6 NC axes
  • Various no. of stroke ranges executable
  • Fast return stroke (optional)
  • Stroke length up to 440 mm (optional)
  • Automatic back-off cam switching (optional)
  • Up to 3 different back-off cams
Model Name
LS 600 F / LS 700 F / LS 800 F / LS 1000 F / LS 1200 F / LS 1400 F / LS 1600 F
Max. normal module (mm)
12
Max. cutting diameter (mm)
600 / 700 / 800 / 1,000 / 1,200 / 1,400 / 1,600
Stroke length (mm)
180/240
Centre distance cutter spindle / work table (mm)
0 to 1,130
Axis angle cutter spindle/work table in conjunction with column swivel axis -1 ... +12° (deg.)
±0.15 /±0.28 /±0.4 (according to shaping head)
Stroke position range cutter head slide (mm)
400-950
Stroke speeds (DS/min.)
800/600
Feed rotary axis cutter (mm/min.)
4,000
Total weight (approx. kg)
21,000 - 26,000

The Liebherr-Gear Shaping Machines are a synonym for gear wheel production at the highest stage and stand for high quality, economy and productivity. This is not least due to the modular platform system, which enables the alternatives of different platforms. By selecting the corresponding modules, the machine can be adapted optimal to the respective process. Depending on the corresponding application, it is possible to select between a electromechanical and hydraulic shaping head. The hydraulic shaping head is used for machining of big gears and big module. The electromechanical shaping head provides advantages at high stroke rates and in connection with the NC-helical guide. Furthermore, the constructive execution enables the production of the most various components with minimum setup effort.

Key features

  • Moveable cutter head slide
  • 6 NC axes
  • Various no. of stroke ranges executable
  • Fast return stroke (optional)
  • Stroke length up to 440 mm (optional)
  • Automatic back-off cam switching (optional)
  • Up to 3 different back-off cams
Model Name
LS 800 H / LS 1000 H / LS 1200 H / LS 1400 H / LS 1600 H
Max. normal module (mm)
16/22
Max. cutting diameter (mm)
800 / 1,000 / 1,200 / 1,400 / 1,600
Stroke length (mm)
270/440
Centre distance cutter spindle/work table (mm)
0 to 1,100
Stroke position range cutter head slide (mm)
400 ... 1,400 (according to machine configuration)
Stroke speeds (DS/min.)
270/200
Feed rotary axis cutter (mm/min.)
4,000
Total weight (approx. kg)
22,000-26,000

The Liebherr-Gear Shaping Machines are a synonym for gear wheel production at the highest stage and stand for high quality, economy and productivity. This is not least due to the modular platform system, which enables the alternatives of different platforms. By selecting the corresponding modules, the machine can be adapted optimal to the respective process. Depending on the corresponding application, it is possible to select between a electromechanical and hydraulic shaping head. The hydraulic shaping head is used for machining of big gears and big module. The electromechanical shaping head provides advantages at high stroke rates and in connection with the NC-helical guide. Furthermore, the constructive execution enables the production of the most various components with minimum setup effort.

Key features

  • Moveable cutter head slide
  • 6 NC axes
  • Various no. of stroke ranges executable
  • Fast return stroke (optional)
  • Stroke length up to 440 mm (optional)
  • Automatic back-off cam switching (optional)
  • Up to 3 different back-off cams
  • Machinery & Manufacturing
Liebherr-Verzahntechnik GmbHLiebherr-Verzahntechnik GmbH, founded in 1969, is one of the leading manufacturers of machine tools and automation systems. The company offers an extensive product program of machine tools and machine automation systems for economic manufacture of gearing products. The company supplies gearings, gearboxes, and slewing bearings to leading worldwide manufacturers.
[Liebherr, Cutting, Gear cutting, Gear Shaping, LS]