Technology

Rotor dynamics analysis is essential for failure prevention in your operations. In addition, it leads to a number of other benefits. At G-TECH, we have developed several tools and systems to ensure that rotor dynamics can be effectively carried out.

In this article, we look at how to implement 1. the  IBSPE Trinity R-Test Position Error Measurement and Correction for Rotating and Swinging Axis of the 5-axis Machine Tool and 2. Spindle Thermal Drift Measuring System (STDMS). Read on to learn more.

What Is Rotor Dynamics, and Why Is It Crucial? 

Rotor dynamics Analysis measures and vibrations in rotating components, such as shafts and rotors in turbines, pumps, and motors. It looks at the relationship between factors such as unbalanced masses and operating speed, and vibrations, and how that relates to machine health.

More importantly, it focuses on avoiding issues such as instability and catastrophic failure by identifying and avoiding critical speeds.  Let's look at some of these benefits below:

1. Failure Prevention.  By detecting potential failure modes and damage components early, disruptive or even catastrophic breakdowns can be avoided. In fact, at G-TECH, we believe a properly designed predictive maintenance system can even achieve up to 100% machine uptime. 

2. Efficiency.  Minimizing machine malfunction can lead to more efficiently run operations as well as a longer lifespan for your assets.

3. Cost Savings. Using software to analyze systems before building physical prototypes or waiting for actual breakdowns or work stoppages can help save costs significantly. This is especially true when one takes into account the prohibitive cost of the alternatives of physical testing and modification.

4. Design Optimization. This type of software also makes it possible for engineers to test and design systems continually for optimal final results. Such a process increases the likelihood of ending up with final designs that are inherently more stable and reliable under various operating conditions. 

The illustrations below demonstrate the IBSPE Trinity R-Test Position Error Measurement and Correction for Rotating and Swinging Axis of the 5-axis Machine Tool according to ISO 10791-6, as well as how to use the Spindle Thermal Drift Measuring System (STDMS).

IBSPE Trinity R-Test Position Error Measurement and Correction for Rotating and Swinging Axis of the 5-axis Machine Tool (ISO 10791-6)

The IBSPE Trinity R-Test wireless 5-axis tooling machine positioning accuracy measurement instrument can provide positioning accuracy correction values, as well as machine accuracy evaluation parameters

Q value: Geometric accuracy error evaluation value, P value: Dynamic accuracy error evaluation value

Spindle Thermal Drift Measuring System (STDMS)

STDMS is a special equipment for measuring the thermal deformation of the machine tool spindle, including a displacement sensor and temperature sensor hardware and measurement software, which can measure one set of axial thermal deformation and four sets of temperature (front/rear bearing, and environmental, and motor temperature). It uses a capacitive displacement meter (with a measurement range of 500 micrometers and a measurement resolution of 0.5 micrometers), and the measurement results can be exported as a sheet.