Spin stand for electric anchor

For the development, prototype testing, quality assurance and production of rotors

For the development, prototype testing, quality assurance and series production of electric armature rotors, the spinning of the components in the operating speed range is crucial. High speeds can cause subsequent displacement, settling or material deformation, which can lead to changes in imbalance and thus to a loss of performance or increased wear. Spin stands for electric armatures enable these effects to be detected at an early stage, the rotors to be tested precisely and the balancing results to be optimally controlled.

Our centrifugal solutions are specially designed for the high demands of electromobility and support engineers in analyzing rotor vibrations, strength limits and dynamic behaviour. This not only increases the operational safety of the rotors, but also significantly boosts efficiency in production and development. The use of such spin test rigs allows prototypes, small series and series products to be tested reliably, corrections to be made before series production and the service life of the rotors to be secured in the long term.

Rotor types

Electric anchor Electric motors

Industries

Automotive

Benefit from the possibilities of the Hofmann network

Centrifugal processes for rotors from electric armatures to turbomachines

High-performance spin stands are indispensable for the development, prototype testing, quality assurance and series production of rotors. They enable the rotors to be run up to their subsequent operating speed, which can lead to subsequent mass displacement in the rotor, particularly in the case of electric motors. This displacement influences the unbalance and is crucial for the subsequent balancing of the components.

Within the Hofmann network, we offer both our own spin stands, such as the vertical type ESV25-AR, and solutions from our partner company deineMaschine GmbH. The combination of Hofmann technology and partner solutions enables flexible, powerful and safe centrifugal processes for a wide range of rotors, from electric anchors to turbo machines.

Our Hofmann centrifugal stands are characterized by their compact design, high centrifugal speeds, precise direct drives, automated loading options and comprehensive safety functions. Partner products from deineMaschine complement the portfolio with innovative systems for prototypes, small series and specialized applications.

By working together in the Hofmann network, you benefit from maximum precision, efficiency and operational reliability, optimally coordinated devices and a wide range of applications - from research and development to series production.

Further information on the products of our partner company can be found on the website of deineMaschine GmbH.

Variants

Vertical spin stand

eSpin spin stands

Quasar spin

Vertical spin stand

Type ESV25-AR

The Hofmann ESV25-AR vertical spinning stand has been specially developed for the precise spinning of electric motors in large-scale production. A central component of the spinning process is bringing the rotors up to their subsequent operating speed in the vehicle. This so-called spinning often causes a shift in the mass of the laminations in the rotor, for example, which can lead to a change in the imbalance. Due to the low tolerances of electric rotors, a spinning process is essential to ensure optimum rotor balance, durability and operational reliability of the components.

The Hofmann spin test stands are available in a vertical design and offer maximum flexibility in loading, which can be carried out both manually and automatically using robots. Thanks to the precise control and high spin speeds, prototypes, small batches and series production can be tested efficiently and reproducibly.

Thanks to its compact design, robust construction and high-precision direct drive, the ESV25-AR is ideal for the production and quality assurance of electric rotors where maximum accuracy and safety are required.

Special features

Compact design
Spin speed up to 20,000 rpm (with a maximum component weight of 25 kg)
Internal pre-storage for robot or manual loading
Main spindle direct drive with high-precision collet chuck holder
Upper clamping point designed with roller clamping head
Automatically operated loading door with safety interlock and burst protection, designed for the above-mentioned spin speed and maximum component weight
Ideal accessibility (loading / unloading)
Central access to media supply
Basic equipment with a Siemens PLC
Possibility of CAQ connection / master computer connection
Remote maintenance access

Field of application

Series production of e-anchors from passenger car e-drives

eSpin spin stands

Spin stands are indispensable for the development, prototype testing, quality assurance and production of rotors. They enable the precise investigation of the vibration behavior and load-bearing capacity of rotating components under realistic centrifugal forces. They provide crucial insights into limits, stability and material behavior, particularly for the research and development of new rotors.

Our partners - deinMaschine
The high-performance spin stands in the eSpin series are supplied by our partner company yourmachine distributed. This gives you direct access to individually configurable, high-precision centrifugal solutions for a wide range of requirements.

Contact us
Phone: +49 (0)6252 982098
info@deinemaschine.com

Special features

Revolutionary electric direct drive
Innovative modular system for the finest gradations depending on speed and rotor weight
Variable axial bearings and various motors
Low-maintenance and reliable thanks to the absence of toothed components
Fast and cost-effective maintenance of direct drives
Standardized shaft holder, almost all-round cover locking, constructive labyrinth seal and vacuum-tight centrifugal container for optimum protection in the event of bursting
Optimized design allows the machine to be set up directly on the hall floor up to the size of the eSpin 1000 for simplified installation and reduced installation site requirements
Central, computerized control and measurement data acquisition system with optional extensions
Including numerous monitoring systems for safety
Low volume of less than 75 dB (A)
Market leader in energy efficiency
Further options available (e.g. heating and cooling of the rotor, measurement technology for expansion measurement or condition monitoring during endurance tests, telemetry system, high-speed camera)

Field of application

Burst tests (to determine the rotor limits and to confirm models)
Strength tests (for quality assurance, in the specified overspeed ranges)
Material hardening (by accelerating up to the flow range of the material)
HFC tests (testing of engine parts under operating conditions)
LCF tests (investigation of material fatigue over time and load cycles)

Spin stand type eSpin-1000 / your machine

Quasar spin

The right measuring system for Hofmann spin-drying solutions

The specially developed measuring software for vertical spin stands offers a comprehensive solution for the precise measurement, analysis and balancing of rotors. Thanks to an integrated rotor database, different rotor types can be efficiently managed and called up at any time, allowing the software to be optimally integrated into a wide range of testing and production environments.

With its ability to balance flexible rotors in several planes and at different speeds using influence coefficients, the software offers maximum flexibility and accuracy. The display of measured values in run-up or run-down (tracking) as well as in continuous mode for long-term measurements enables detailed analysis under realistic operating conditions.

A variety of display formats are available for evaluation: Measured values can be displayed directly in vibration units and visualized in Bode or polar diagrams. The software also offers functions for signal analysis, shaft vibration measurement including run-out compensation and integrated logging software for complete documentation of all test results.

Special features

Use of commercially available data acquisition modules with high availability and the option of connecting a large number of different measurement sensors
Short start-up times and optimum utilization of PC computing power
Fast data processing through the use of efficient computing algorithms
Easy creation and customization of different measurement configurations and measurement surfaces
Easy creation of extensive protocols with freely configurable layouts
Simple integration of customer sensors
Acquisition of dynamic (time-varying) and static (process data) measured values
Extensive analysis options (sum oscillation, 1f, 2f, frequency analysis, waterfall, oscilloscope function, expansion measurement, etc.)
Display of measured values over speed or time, in x-y, polar, bar charts, tables, etc.
Archiving of measured values as raw data; subsequent analysis of measured values is therefore always possible after successful measurement
Evaluation of the measurement data to detect rotor breakage at an early stage
Graphical representation of the influence vectors
Effective unbalance correction through optimization algorithms for balancing with the aim of reducing vibrations