The highest precision machining operation in the entire process

Grinding is the last operation in the machining cycle, it is the one that requires utmost care and the most accurate machining in terms of dimensions and tolerances.

External cylindrical grinding mainly concerns assembly surfaces (bearing surfaces or similar), the draw-up taper of a shaft-to-coupling-flange assembly, for instance.

Internal cylindrical grinding mostly concerns assembly surfaces such as the tapers in the gearwheels, tapers in the coupling flange for flange-to-shaft mating, and calibrated diameters (in clutch drums, hollow pinions, sleeves, etc.).

We also grind gear teeth (profile and helix correction).

In gear grinding, we implement 2 processes:

• Profiled grinding wheel (HÖFLER grinding machine)
• Straight shaped grinding wheel, with separate independent wheel dresser (REISHAUER).

3 work stations can be distinguished: plane and cylindrical grinding machines, gear grinding machines, and quality control.

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  Plane and cylindrical grinding machines:

  Plane grinder BLANCHARD 18, with a 900 mm diameter magnetic table and a maximum height of 400 mm

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  Internal/external cylindrical grinder GLAUCHAU SIP 630X500. Its clamping diameter is 780 mm, its maximum length is 300 mm, and the bore diameter is 85 mm.

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  Internal cylindrical grinder GLAUCHAU SI 6/1 AS-N-315. Its clamping diameter is 300 mm, minimum bore diameter 30 mm, and maximum bore diameter is 100 mm.

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  External cylindrical grinder CLICHY EP 1500 with a maximum diameter of 360 mm, and a maximum length of 2,000 mm

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  External cylindrical grinder GENDRON RA 10-75; its swing diameter is 280 mm, and its maximum length is 750 mm.

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  Gear grinding machines:

  HÖFLER H630E grinding machine. Capacity: modules from 1.5 to 14, minimum diameter 80 mm, maximum diameter 800 mm, working height 225 mm, maximum helix angle 45°; the number of teeth ranges from 12 to 372, maximum weight of part with jig: 800 kg. Profile and helix corrections are possible.

  HÖFLER H1000E. Capacity: modules from 1.5 to 14, minimum diameter 80 mm, maximum diameter 1,000 mm, working height 225 mm, maximum helix angle 45°; the number of teeth ranges from 12 to 372, maximum weight of part with jig: 1,500 kg. Profile and helix corrections are possible.

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  REISHAUER RZ801 + grinding wheel dresser AM10. Capacity: modules from 0.5 to 8, minimum diameter 40 mm, maximum diameter 800 mm, working height 300 mm, maximum helix angle 30°, number of teeth ranging from 10 to 600; the maximum weight of the part with jig is 400 kg, center distance 750 mm. Profile and helix corrections are possible.

  REISHAUER RZ701 + grinding wheel dresser AM10. Capacity: modules from 0.5 to 8, minimum diameter 40 mm, maximum diameter 700 mm, working height 300 mm, maximum helix angle 30°, number of teeth ranging from 10 to 600; the maximum weight of the part with jig is 400 kg, center distance 850 mm. Profile and helix corrections are possible.

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  Acquisition of another grinding machine

  Masson-Marine have recently purchased a “Niles ZE 800” gear grinding machine for helical gears, enabling us to achieve a gear grinding quality level DIN 3 for gearwheels up to 800 mm diameter.

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  Control instruments

  Gear grinding controller MAAG PH 100 with maximum diameter 750 mm.

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  Gear grinding controller HÖFLER EMZ 630 with a maximum diameter of 630 mm.