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NOZZLE NEEDLE | CBN COMPLETE MACHINING

CBN INSTEAD OF CERAMIC FOR JET NEEDLE MATCH GRINDING

BAHMÜLLER employs a concept in which we replace previously used ceramic grinding tools for match grinding of jet needles for diesel injection with CBN.

BAHMÜLLER employs a concept in which we replace previously used ceramic grinding tools for match grinding of jet needles for diesel injection with CBN.

The following convincing arguments were ultimately decisive in the optimizations that were achieved:


  • oversize of 30 μm (precondition of ceramic match grinding) eliminated by removing 300 μm with CBN grinding tools
  • cycle time reduced by 50% compared to conventional machining
  • higher profile accuracy (straightness) through in-process deflection compensation with piezo-tailstock, additional 3 sec. cycle time reduction + gap dimension tolerances in the range of ± 0.0005 mm
  • process stabilization through dressing interval increase from 25 to 500 work pieces, despite longitudinal grooves in grinding zone

YOUR BENEFITS

  • cycle time reduction
  • changeover time reduction
  • longer tool life
  • increased machine availability

The challenges BAHMÜLLER faced were successfully mastered: the effect in production was extremely drastic, and BAHMÜLLER could change over the existing "old machines" to the new technology with
few limitations.
The deflection compensation during grinding, by means of the piezo "driven" tailstock, is now
used for nearly all slender "long parts" for cycle time reduction and quality increases.

The process has since been further optimized so that the conical shape of the guide bore is modified during match grinding of the ground guide part, which allows for entirely new gap dimension reductions.

PROJEKT PROFILE

Customer: corporation company
Country: international
Products: ULTRA ALPHA
Services: productivity increase, process integration
Application: diesel injection, common rail

WE ARE LOOKING FORWARD FOR YOUR CALL


Our head office will be glad to advise you.

phone +49-(0)7181-809-0
fax +49-(0)7181-809-234
e-Mail info@bahmueller.de


You will find your personal contact on the different departments under the rubric service.

BAHMÜLLER YOUR CONTACT


Please find our contact persons for each country. Choose a county and a department. We look forward to hearing from you.

BAHMÜLLER Ansprechpartner

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