• TOPICS
    • Design
    • Manufacturing
    • Inspection
    • Heat Treating
    • Lubrication
    • Materials
    • The Gear Industry
    • Gears by Type
  • MAGAZINE
    • Current Issue
    • Departments
    • Archives
    • Subscribe
    • Advertise
  • NEWSLETTER
    • Subscribe
  • VIDEO
    • Gear Technology TV
      • Ask the Expert Live
      • Revolutions
    • Industry Videos
  • BLOGS
  • BUYER'S GUIDE
  • NEWS and EVENTS
    • Product News
    • Industry News
    • Events
  • ADVERTISING
    • Brand Awareness
      • Print: Display Advertising
      • Online: Web Banners & Keyword Banners
      • Online: Native Advertising (Sponsored Content)
      • E-mail: Custom, White Papers & Webinars
      • E-mail: Newsletter Sponsored Content (Native Advertising)
    • Response & Lead Generation
      • Online: Sponsored Content (Native Advertising)
      • E-mail: Newsletters
      • E-mail: Newsletter Sponsored Content (Native Advertising)
      • E-mail: Custom, White Papers & Webinars
      • Online: Buyers Guide
    • Print Advertising
      • Print: Display Advertising
      • Print: MPT Expo Showstoppers
      • Print: Buyers Guide
      • Print: Manufacturing sMart
      • Print: Specifications
      • MPT Expo Show Guide Advertising
    • Online Advertising
      • Online: Web Banners & Keyword Banners
      • Online: Native Advertising (Sponsored Content)
      • Online: Buyers Guide
      • Online: Specifications
    • E-mail Advertising
      • E-mail: E-Newsletters
      • E-mail: Newsletter Sponsored Content (Native Advertising)
      • E-mail: AGMA Industry News
      • E-mail: Custom, White Papers & Webinars
      • E-mail: Specifications
    • Special Promotions
      • Print: MPT Expo Showstoppers
      • Print: Buyers Guide
      • Print: Manufacturing sMart
      • MPT Expo Show Guide Advertising
  • CONTACT US
  • AGMA
    • Membership
    • Events
    • Education
    • Emerging Technology
    • AGMA Media
    • Standards
Subscribe
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Home » EMAG Machines Rotor Shafts with End-to-End Production Systems

EMAG Machines Rotor Shafts with End-to-End Production Systems

December 17, 2019
Lightweight construction has been one of the primary challenges in automotive engineering for decades. Each component, from gears to drive shafts to various housings, is expected to become lighter and smaller in order to reduce fuel consumption. Interestingly, the topic is becoming even more important in electric cars because less weight means covering longer distances without recharging. For this reason, the “range” issue will remain one of the primary objectives in E-mobility for the foreseeable future. In this context, massive and heavy electric motor shafts with relatively large laminated rotor cores do not fit the bill. EMAG is currently demonstrating how weight-optimized rotor shafts – and thus, weight-optimized electric motors in general – can be mass-produced. Their specialists for complete production systems have designed a line where soft machining, hardening and hard machining of a hollow (and therefore light) shaft take place one after the other. 

“All in all, the production of such a component is the perfect type of challenge for EMAG,” explains Peter Loetzner, president and CEO EMAG LLC. “We have all the necessary application know-how, ranging from turning, drilling and milling to hardening and grinding. We have also been developing the matching automation systems for decades. This means the complete line and process development all comes from a single source. We also supply customer-specific individual solutions for core sub-processes such as turning or grinding, which can be loaded by hand. These stand-alone machine installations can be the starting point for later expansion into a complete automatic line. In both cases, flexible modular solutions are used. From our various technology modules we configure tailor-made machines, allowing us to be prepared for any challenge.”

The "assembled" rotor shaft is an impressive example of this flexible approach. EMAG was asked to develop a multi-stage production system that would combine soft machining, laser welding, hardening and hard machining. In addition, the shaft is assembled during the process from two different end pieces – a basic principle that is known, for example, from assembled camshafts. The procedure can be broken down into short and partially parallel sub-processes - this approach often gives component developers more freedom. The shafts are finished with perfectly timed cycles: In the first two operations (10 and 20) the two different blanks are machined inside and outside, creating the hollow internal geometry. 

Four EMAG VL 4 pick-up machines are used for this. After a cleaning process (OP 30) the end pieces are joined together in an EMAG ELC 250 machine by laser welding (OP 40) – an extremely fast and safe process. The precisely controlled, concentrated energy of the laser beam allows high welding speeds and involves a minimum of distortions on the welded component. Next, the bearing seats are hardened in a matter of seconds and with high precision in the MIND 750 induction hardening machine by EMAG eldec (OP 50). Hard machining of the shaft starts with external turning in the EMAG VT 4-4 pick-up machine (OP 60) and internal turning in the modular VL series (OP 70). OP 80 and 90 consist of gear-cutting the shaft and finish-turning various shoulders on the outside. The finishing with close tolerances and high demands on surface quality is provided by the final grinding process on a vertical shaft grinding machine of the VTC series (OP 100).

The shaft is then ready for joining with the corresponding laminations. The EMAG automation technology, which ensures transport between the machines, is adapted to customer requirements. For example, line gantries, stacking cells, accumulation conveyor belts or the EMAG proprietary TrackMotion system can be used. In any case, the system benefits from the standardization of all machines and their optimized interfaces. The customer benefits from a complete solution in the form of a comprehensive system and EMAG as the only contact needed during planning, implementation and service. In addition, the EMAG proprietary pick-up technology ensures speed in the process flow: 

The shaft (or its two separate components at the beginning) is transported into and out of the machining area with a movable workpiece spindle. The vertical turning and milling process is then performed at high cutting speeds with optimized chip flow. 

About every 45 seconds a finished rotor shaft leaves this line. Unwanted idle times are reduced to a minimum. 

“The quality of such a production process is already determined at an early concept phase. EMAG uses its full range of expertise here – on the various tool applications, the design of multi-functional machine tools and their control and interlinking. The main objective is always to produce the best components – with the cycle time and quality that the customer is asking for. The customer ultimately decides whether this will be done in an integrated line with high annual volumes or, for example, with hand-loaded individual machines with smaller quantities and more flexibility,” concludes Loetzner.
Design Shafts Product News
  • Related Articles

    Velo3D Partners with Hartech Group to Distribute End-to-End Additive Solution

    Siemens Digital Offers End-to-End Plant Overview with Mendix

    KUKA Highlights End-to-End Automation Solutions at Automate 2022

  • Related Events

    VDW Symposium: Innovations in Production Technology Machine Tools From Germany

    EMAG Technology Days 2018

    EMAG Technology Days

Free Gear Technology Subscriptions
Subscribe
Free Gear Technology Subscriptions
Subscribe
FEATURED VIDEO
  • Liebherr pallet
    Liebherr Palletizing Cell
June 23, 2022
RECOMMENDED
  • 2022 Gear Technology Buyer's Guide

    December 5, 2022
    gt1122-buyers-guide.jpg
  • Reigniting the Educational Infrastructure

    December 5, 2022
    gt1122_Page_20_Image_0001.jpg
  • Profile: Continuing Education and Training with the AGMA

    December 5, 2022
    gt1122_Page_26_Image_0001.jpg
  • Polished Up!

    February 13, 2023
    gt0123_Page_38_Image_0002.jpg
  • Remaining Competitive

    February 13, 2023
    gt0123_Page_42_Image_0001.jpg
  • Polished Up!

    February 13, 2023
    gt0123_Page_38_Image_0002.jpg
  • Remaining Competitive

    February 13, 2023
    gt0123_Page_42_Image_0001.jpg
  • 2022 Gear Technology Buyer's Guide

    December 5, 2022
    gt1122-buyers-guide.jpg
  • Subscribe
  • Advertise
  • Contribute
  • AGMA
Powered byAGMA
Copyright © 2023 Gear Technology
  • Privacy Policy
  • Contact