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HMX-400

Today, the Fässler gear-honing process with the HMX-400 is the most economical way for hard finishing gears in mass production for the car, truck, motorcycle and aerospace industries. Recently, the gear-honing process has become popular in the whole gear industry owing to its technical and economic advantages. The HMX-400 Gear-Honing Machines are exclusively intended for the green or hard finishing of spur and helical gears, shaft type pinions, cluster gears and internal gears.

The 9-axis machine with the Siemens SINUMERIK 840D control system is particularly distinguished by its compact design, outstanding productivity, and efficiency and versatility, which allows for conventional double-flank honing, synchronous single- or double-flank honing, as well as internal and combi honing. Longitudinal crowning and tapering (conical honing) of the tooth flanks are also possible.

Process data

Swivel drive (A1-axis) speed 0-112°/s
Swivel drive (B1-axis) speed 0-12°/s
Cross slide (X-axis) infeed travel -180/+5 mm
Cross slide (X-axis) speed 0-7500 mm/min
Longitudinal slide (Z1-axis) travel -400/+100 mm
Longitudinal slide (Z1-axis) speed 0-8000 mm/min
Longitudinal slide (Z2-axis) travel -627/-87 mm
Longitudinal slide (Z2-axis) speed 0-50 m/min
Honing stone (C1-axis) RPM, stepless 0-1500 1/min
Workpiece (C2/C3-axis) RPM, stepless 0-6000/9000 1/min
Max. honing force (max. process load) 1000 N

Comparison of Fässler's noise power spectrum vs. grinding

Decibel measurements have demonstrated that with a frequency of 3000 Hz, for instance, a noise reduction from 90 dBA to 55 dBA can be achieved.

Dimensions

Length width (including honing-oil unit) 3150x2350 mm
Height: top of machine enclosure 2180 mm
Height: top of oil-mist filter (on top of machine, option) 3100 mm
6 damper pads (for 6-point setting): height adjustment ±5 mm
Required floor space: length width (approx.) 4500x5000 mm
Height of centers from the shop floor (approx.) 1165 mm
Length of parts between centers (max.) 450mm

Axis concept – compact and rigid

A Swivels the honing stone to the axis-crossing angle.
B1 Swivels the honing-stone head (the pedestal on the cross slide) for longitudinal crowning and tapering (conical honing).
B2 Swivels the turntable of the headstock, i.e. the work spindles, to honing or loading/unloading position.
C1 Honing-stone drive: positions and rotates the honing stone. Positions and rotates internal gears
C2/C3 Two work spindles sitting on the turntable of the headstock. They position and synchronize the workpiece or dressing tool with the honing stone (C1 axis).
X Cross slide for the radial movement (infeed) of the honing stone towards the workpiece or dressing tool.
Z1 Longitudinal slide for the axial movement of the honing stone (oscillation movement).
Z2 Moves the headstock that carries the 2 work spindles to honing or loading/unloading position.
Tailstock Supports the clamping mandrel or shaft-type part with rotating centre. Normally, no axial movement of the spring-loaded live centre takes place.

Technical data HMX-400

Honing-stone diameter 400 mm
Machinable workpiece diameter:
external honing		 20-320 mm
Machinable workpiece diameter:
internal honing		 50-350 mm
Max. workpiece-shaft length 400 mm
Weight 10500 kg
Number of axis 9
Max. speed, honing stone drive 1500 1/min
Max. speed, workpiece drive 6000/9000 1/min
Slewing range A-axis ±45°
Slewing range B-axis ±10°
Control system Sinumerik 840 D
Check out the gear honing process
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