- Balancing of the drive train
- Testing the rear axle drive in the installed condition (NVH = Noise vibration harshness,VAD = Vibro-acoustic diagnosis)
- Function test
- Automatic test sequence
Special features
- Modular construction as a single station with free positioning of test part (installation position)
- Powerful industrial PC for control of the test sequence and measured value processing
- Software module for VAD procedure and measurement of static unbalance; large rotor type data memory, operator prompting, diagnostic program, statistics, process control, external interfaces
- Single or multiple-channel noise checking with integrated unbalance recognition
- Flexible application, easy change over for various rearaxle modules
- Special system adaptation to the requirements of objective noise testing, such as structural isolation of the test equipment as well as high-repeatability, test part coordinated sensor coupling of the test part support.
- Automatic coupling of the part at the shaft ends
- Automatic recognition of the possible correction position
- With manual correction automatic indexing to the correction position and display of the correction weights
- Protection against shaft breakage.
Design
Range of application
Quality testing of drive modules (front-mounted rear-axle with drive shafts) of passenger vehicles and light commercial vehicles.Suitable for measurement and correction of the unbalance, improvement of the NVH characteristics through vibro-acoustic evaluation of the assembly structure as well as diagnosis of the noise properties of components (differential, drive shaft, bearing).
Application in production, integrated into the assembly line.
Design
Single-station machine with fully automatic test sequence, loading and unloading by a pallet system.Consisting essentially of vibration isolated machine frame for testing as if installed, measurement and control cabinet with test-stand PC and drive, positioning device for adaptation to the work-piece type on hand, protective enclosure.
Sequence of operations
- Transport the rear-axle module on pallet by roller conveyor and close the protective equipment (loading door)
- Lift the pallet, clamp, couple the drive and synchronizer, attach the sensors for unbalance measurement, lower the pallet, close the safety devices.
- Fully automatic test sequence: Check the length of the drive shaft (with type mix), run up and regulate the load, measure the required torque and differential ratio, measure the initial unbalance, structure-borne sound and the possible test weight and correction positions, brake, index, add the test weight, and carry out a further measuring run, brake, index, remove the test weight, calculate the co- efficient and initial unbalance. Compare with tolerances (for coefficient and unbalance).
- When out of tolerance: Index for unbalance correction, open the operating doors, manually add the unbalance correction according to the display, close the doors and perform a check run.
- When in tolerance: Mark, travel to home position, open loading doors, move the pallet out.
Technical data
| Technical data at a glance | JAC-I/A | |
| Measuring unit | IPC | |
| Unbalance determination | • | |
| Manual unbalance correction | • | |
| Vibro-acoustic diagnostic | • | |
| Drive simulation through | ||
| test part loading equipment | • | |
| Rear-axle module, complete | ||
| Weight | [kg] | 50 - 200 |
| Dimensions | [mm] | a.A. |
| Machine | ||
| Width A 1) | [mm] | 4800 |
| Depth B 1) | [mm] | 3600 |
| Height C 1) | [mm] | 2600 |
| Sampling rate, VAD- 4) | [kHz] | 20 |
| Drive load, max. | Nm | 130 |
| Test speed | [min -1] | 1500 - 5000 |
| Measurement uncertainty, approx. 2) | [gmm] | 25 |
| Cycle time, approx. 3) | [s] | 120 |
| Air pressure | [kPa] | 600 |
| Power consumption | [kVA] | 11 |
| Order No. | R0560100.01 | |
| Order No. | R0560101.01 | |
| Type identification | Order No. | R0560102.01 |
| 2) Acc. to DIN 1319, 95% probability, workpiece dependent | ||
| 3) Dependent on unbalance correction method and integration with other equipment | ||
| 4) Dependent on the selected test speed | ||
| o.r. On request |
