Efficient Machining of Stator Housings for E‑Mobility

Newly-developed, patented process for efficient simultaneous machining of stator housings (inner housing) for E‑Mobility

• Semi-finis­hing up to 8 times faster 
  
• Effi­ci­ency increase of up to 100 % com­pared to con­ven­tio­nal tur­ning process 
  
• Com­pact Machine Moun­ting due to Ver­ti­cal Machining
  

Innovation

• Serial pro­duc­tion solu­tion for effi­ci­ent ID and OD machi­ning of pot-shaped sta­tor housings by means of a simul­ta­neous tur­ning process
• Sub­sti­tu­tion of sepa­rate OD tur­ning pro­ces­ses (roug­hing) by an inte­gra­ted pro­cess of ID and OD machining
• Signi­fi­cant reduc­tion in machi­ning time
• Increase in eco­no­mic efficiency

• Pot-shaped sta­tor housings of e‑mobility with inner and outer contour
• High requi­re­ments for form and posi­tion tolerances 
  • Fit tole­ran­ces IT6
  • Cylin­der shapes bet­ween 20 and 30 µm
• High requi­re­ments for con­cen­tri­city up to 0.05mm

• Multi-spindle tur­ning cen­ter with tool turret
• Ver­ti­cal test setup

Expan­sion stages for serial production:

• Inte­gra­tion of fur­ther machi­ning units through modu­lar design
• Auto­ma­tic loa­ding and unloa­ding of work­pie­ces via pick-up
• Inte­gra­tion of in-pro­cess mea­su­ring equipment

• Use of spe­cial inter­nal bor­ing tools and self-deve­lo­ped exter­nal bell tools, which enable machi­ning of the inner and outer con­tour in parallel
• Vibra­tion-dam­ped machi­ning on the thin-wal­led work­piece through simul­ta­neous ope­ra­tion of the inner and outer tools
• Simul­ta­neous rotary move­ment of work­piece and inner tool with sta­tio­nary outer tool
• Up to 8 times fas­ter machi­ning for the inter­nal and exter­nal roug­hing pro­ces­ses due to simul­ta­neous machi­ning and hig­her num­ber of cut­ting edges (4‑fold cut­ting edges)
• Lower tor­que on the clam­ping device due to coun­ter-rota­ting cut­ting forces of inter­nal and exter­nal machi­ning (com­pared to sin­gle inter­nal machining)
• Auto­ma­ted parts hand­ling (pick-up)
• Redu­ced re-clam­ping processes

• Work­piece spec­trum with tube and pot-shaped geo­me­try e.g.
  • E‑mobility sta­tor housings
  • Alu­mi­num castings
  • Heat sinks for hybrid engines
  • Tube-flange cou­plings for the oil and gas industry
  • Bea­ring and housing com­pon­ents for gene­ral mecha­ni­cal engineering
  • Work­pie­ces for the pla­s­tics industry

Read the whole Article:

Effi­ci­ent Machi­ning of Sta­tor Housings for E‑mobility