Tire spring characteristic test stand from TMX
Measure the spring and damping properties of tires accurately
- Type: development test stand, quality assurance
- Device under test: passenger car tires
- Test task: measurement of the tire spring characteristic
Ride comfort, safety and wear depend on the spring characteristic
How a tire deforms vertically under load decides how it behaves on the road. The spring characteristic shows how a tire responds to different loads, soft and comfortable or stiff and direct. Chassis development, comfort analysis and tire sizing all depend on measuring this curve accurately.
The TMX spring characteristic test stand delivers repeatable curves and curve families under variable load conditions: automated, convenient and highly accurate.
Typical test requirements
- Force-displacement behavior under static vertical load (through defined displacement steps)
- Measurement of the resulting wheel contact force over the deformation
- Influence of inflation pressure on the spring characteristic
- Comparison of different tires or sizes
- Assessment of ride comfort, damping and structural behavior
- Repeatable measurement at very low travel speeds
- Automated evaluation with curve families
- Automotive
- Development
- Components
Test tasks
- Spring characteristics under variable load
- Comparison of tires from different manufacturers or in different sizes
- Analysis of comfort, damping and vertical stiffness
- Curve families as a function of inflation pressure
- Development, validation and series release
Typical test parameters (adjustable)
- Freely definable start and end load (displacement)
- Number of test steps
- Travel speed below 0.1 mm/s possible
- Inflation pressure set by automated inflation
- Zero-point calibration before every cycle
- Force (result variable)
Options and special functions
- Integration into existing test environments
- Extension for larger tire diameters (trucks)
- Combination with climate chamber or temperature conditioning
Benefits at a glance
- High repeatability thanks to zero-point detection
- High-accuracy results through slow travel speeds
- Massive frame for low-vibration operation
- Integrated tire inflation with variable pressure settings
- Automatic safety shutdown if a tire bursts
- Easy-to-use software
The TMX spring characteristic test stand in detail
Fully automated spring characteristic measurement for modern tire development
The TMX tire spring characteristic test stand combines high-stiffness mechanics with precise measurement technology and smart control. An automated sequence including inflation pressure control and zero-point detection delivers reliable data with minimal operator effort.
Test stand mechanics
The structure is designed for high stiffness and accuracy. A linear spindle moves the tire down over a defined distance with high accuracy. A load cell records the resulting wheel load.
- Lifting unit with linear spindle and servo motor
- Tire stands on a precision load cell that measures wheel load
- Linear encoder for exact displacement measurement
- Massive welded frame for stability and low vibration
- Integrated automatic tire inflator for pressure control
Drive and control
The lifting unit is precisely controlled and applies very slow, even loads, ideal for repeatable curve measurement without dynamic interference.
- Frequency inverter for precise control of the servo drive
- Control CPU for axis motion control
- Pressure module inflates the tire automatically before every cycle
Measurement and control technology
Displacement, force and pressure measurement work closely together to deliver high accuracy. The data is recorded live and processed into complete curve families.
- Vehicle weight simulated through the travel distance (defined input)
- Linear encoder for high-resolution displacement measurement
- Load cell for precise force measurement (vertical wheel load)
- Fully automatic zero-point detection before every test cycle
- Testing in several steps at a defined travel speed
- Force-displacement curves and curve families at varying inflation pressure
Operating software
The software guides the user efficiently through test preparation and execution. Configuration, execution and evaluation all happen in one clear interface.
- TMX test sequence editor for configuring test sequences
- Live display of status, measured values and progress
- Automatic result reports with 2D and 3D charts
- Display as force-displacement diagram, waterfall diagram or color map
- Convenient operation for series testing too
Summary
The TMX spring characteristic test stand delivers high-accuracy, repeatable force-displacement measurements on tires, automated and easy to use. Ideal for chassis developers, tire engineers and test engineers who need reliable data on comfort and structural behavior.
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