Bierens Companies, founded in 1880, has become the gear specialist for over 70 years. What has always remained is Bierens’ ongoing care and passion for the profession. The foundation of our history, the basis for your future. Bierens has become the market leader in gears, gearboxes, mechanical drives, special machines and overhaul work. For many years Bierens is certified for NEN-EN-ISO 14001 and 9001 and manufactures prototypes and supplies large and small series and products in limited edition, such as a gear for an antique tractor or transmission of a ship.

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2. 5 axis milling of gears
 Bierens approach
 Gear types
 Bierens software
 Milling strategy
 Deburring
 Contact pattern
 S-Gear developments
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3. Bierens history
5-axis production of gears
 Initiated in 2002
 Rejection of available 3D CAD software
 Writing software for 3D models
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4. Advantages of the Bierens milling
method
 Drawing data generates NC-code
 No time consuming CAD/CAM
 Universal milling machines and tools
 High precision gears (DIN 1-3)
 Any tooth form is possible
 Tooth contact optimization
 Input from external sources (BECAL)
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5. Cylindrical gears
 Straight
 Helical
 With or without mill extension
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6. Wobbler gear
ø575 x 100 mm ; mn = 12 ; Z = 46 ; radius = 248,6
mm
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7. Closed Herringbone teeth
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8. Bevel gears
 Straight
 Helical
 Spiral (Klingelnberg, Gleason)
 Herringbone
 S-gear
 For any shaft angle
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9. No need for a nose bearing bush with
5-axis milling method
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10. S-Gear
Advantages
 No axial thrust bearings (pinion)
 At higher gear ratio
 Easy assembly in gearbox
 Tooth root strength
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11. Future developments
 Optimizing the S-gear concept
(macro and micro geometry)
 Bringing the S-gear to classification approval
(marine)
 Expanding more gear types:
 Hypoid bevel
 Worm-wormgear
 …….
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12. Changes at Bierens
Strategy
 Increase of Economy of Scale
 Strong growth in professionalism
 Focus on Technology & Innovation
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13. Changes at Bierens
Operational Changes
 Planning (SAP -> Limis)
 Suppliers (SSP, Frame agreements)
 Lean production focussed
 Better internal logistics
(new factory end 2013)
 Task -> process shift
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14. Customer benefits
 High end products, highest state
of the art technology
 Optimized delivery performance
 Closer to customer needs
 Web portal for order status
 Scale Growth feeds continuous improvement
and intake smart talents
 Sharing knowledge in closer
relationship, technical and engineering
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15. Bierens Companies
Ringbaan Noord 189
5046 AB TILBURG
www.bierens.com
info@bierens.com
T: +31 13 53 600 25
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