Machine tools

Complete machining of differential gear housings on one machine

• incl. internal machining
• 2 clamping situations
• Cycle time: 94.2 seconds

The housings are machined simultaneously by two separately operating main spindles on 6 driven and up to 12 stationary tools.


The machine concept:
Complete and complex machining on only one machine bed

Werkeugmaschinen von HK-CON: Differentialgetriebe-Gehäuse

Application – suitable for …


Housing part


Bearing shield


See the production line differential gear housing in action



Mit dem Laden des Videos akzeptieren Sie die Datenschutzerklärung von YouTube.
Mehr erfahren

Video laden

Bestückung Werkzeugmaschinen

Equipping the plant

The loading conveyor equipped with pallets with a capacity of 20 blanks conveys the workpieces to the machine loading station.

Grippers transfer the workpieces to the clamping device of the first of 2 machining stations.

Processing station OP10

grün eingefärbt = bearbeitete Flächen

Bearbeitungsstation OP10 Differentialgetriebe-Gehäuse

colored green = processed areas

Work steps

1  Calottes: roughing

2  Bolt hole: pre-drill and deburr, inside and outside

3  Outside diameter and flat surfaces: roughing

4  Inner diameter: roughing

5  Inner diameter: sizing

6  Outer diameter and flat surface: finish

Processing station OP20

Bearbeitungsstation OP20 Differentialgetriebe-Gehäuse

7  Pin bore: centering and reaming

8  Bolt hole: reaming

9  Outside diameter and flat surfaces: roughing

10 Inner diameter: roughing

11 Inner diameter: sizing

12 Outer diameter and flat surfaces: finish

13 Calottes: sizing


Differential gear housings place the highest demands on a machine tool:

  • Rotary machining of a wide range of internal and external surfaces with high accuracies
  • Precise insertion of holes
  • Machining of spherical inner surfaces, fits and contours
  • Optimum use of the actuating tool: the workpiece is moved to the actuating tools via the main spindles, which can be moved in X, Y and Z, with the tools plunging horizontally radially into the differential gear housing
  • The entire machining process, including internal machining of the differential housings, is carried out by just one machine with only 2 clamping situations

Complete processing of the sophisticated housing:

Cycle time 94.2 seconds

100% control and removal

All finished differential gear housings are fed to a measuring machine via a drain station after machining. The results of the 100 % measurement are used by the control system for automatic tool correction.

If the measurement results meet the specifications, the workpieces are removed via an accumulation conveyor in combination with a robot arm.


2 driven actuating tools 50 Nm / 20,3 kW / 4500 min-1
2 driven vertical radial drilling units 16 Nm / 8,9 kW / 6000 min-1
2 driven axial drilling units 3 Nm / 0,82 kW / 3000 min-1

2 main spindles

Torque 125 Nm
Power 34,2 kW
Rotations 3000 min-1


Loading conveyor with individual pallets for position-oriented insertion into the machine
Blow-off unit
Measuring station for 100% measurement
Unloading cell with industrial robot
Unloading dust belt for finished parts

Machine dimension

Machine tool 4850 mm x 2870 mm
Machine tool incl. periphery 8000 mm x 4000 mm