RLH-A Remote Laser Hardening Adaptive

Transcription

1 RLH-A Remote Laser Hardening Adaptive DESCRIPTION OF FUNCTION The RLH-A is a 1-D scanner that is based on the scapacs optic building blocks architecture with integrated highly dynamic temperature control. It is capable of hardening very demanding components. RLH-A: Complete view (shown here without cross jet and process jet) THE ADVANTAGES Allows the hardening of complex and variable components in power-train and hardening applications. Variably adjustable process parameters: track mid-point; track width left and right; pre-heating and hardening temperatures and power; defocussing; and emissions coefficient. Parameters can also be changed during the process. Reliable hardening and quality: made possible by the highly dynamic temperature control mechanism via the variable scanner mirror speed and subsidiary slow laser power controls (based on Patent EP B2). Significantly reduced set-up time; process can be easily adapted and adjusted; the optional autofocus module allows spot diameter to vary without requiring a change to the operating clearance. By using scapacs components, the optical system can be optimally adapted to the laser source and the process parameters (fibre diameter, laser source, required power distribution). Optionally, a monitoring camera can be integrated into the system. Optionally available with external line projector so that operating clearance can be optimally set. Page 1 of 6

2 THE RLH-A COMPONENTS fiber coupling e.g. typ Trumpf-D interface box camera flange for robot optional: line projector scanner unit cooled shield RLH-A: Seitenansicht fiber coupling e.g. typ Trumpf-D camera interface box scanner unit flange for robot focussing module slide drawer crossjet cooled shield RLH-A: Rückansicht Page 2 of 6

3 optional: line projector pyrometer flange for robot RLH-A: Draufsicht interface box Page 3 of 6

4 THE FUNCTIONS OF THE INDIVIDUAL MODULES scapacs building blocks Based on a constantly growing collection of optical and mechanical parts. Variable fibre coupling Trumpf-D Trumpf-B Optoskand QBH Optoskand MMI Collimation Fixed collimation or with integrated auto-focus module. The auto-focus module allows the focus diameter to be modified based on the process. The stand-off clearance to the component does not need to be adjusted. An additional safety glass under the end of the glass fibre prevents contaminants from penetrating while the fibre is being changed. Pyrometer Integrated camera-based pyrometer. The path of the pyrometer measurement beam is coaxial with the path of the laser beam. Thus the scanner also moves the pyrometer's measurement field. The measurement distance from the pyrometer to the laser focus is constant which allows it to be optimally adjusted. An error in the scanner positioning does not affect the measurement result. Temperature fields can be selected using software functions. No mechanical adjustment of the sensors is required. Monitoring camera Integrated coaxial-aligned monitoring camera; camera observation is independent of the position of the scanner mirror. Thus the component remains still for the observer (this is not the case for the pyrometer camera). The location of the hardening track can be checked easily and securely using the camera. So the initial commissioning process is faster and less prone to errors. Page 4 of 6

5 Scanner unit Highly dynamic scanner unit. 1-D linear projection. Variable programming options for the scanned line (wide left, right and centre position). External cooling for the entire optics and the scanner unit. This prevents the penetration of cooling water into the optical system. Flange mounting on the robot Can be quickly swapped out with high-precision tool coupling. Measurement for the optics, just as for all scapacs devices, is enabled at the appropriate measuring stations. safety glass drawer Dust-proof drawer for safety glass. Additional protective glass between the lens and the safety glass drawer: offers extra protection for the focusing lens. Efficient cross-jet module (not shown here). Process jet uses nozzle from Silvent (not shown here) in order to prevent water vapour from the quenching bath from reaching the optics. Controller (not shown here) Modern, bus-based control strategy. Actuators and sensors are bus nodes. The RLH controller is the bus master and is separated from the RLH processing head. Controller can be installed as needed (for example, in the facility's equipment cabinet). The RLH system can communicate with the production facility on different Fieldbus types, such as Interbus, Profibus, Devicenet or Profinet. A facility PC can be used for parameterization. The PC can also be used for operating the laser power unit or the facility PLC. Page 5 of 6

6 TECHNICAL SPECIFICATIONS Main characteristics Power supply Weight Limiting acceleration (mechanical), in/not in operating mode Protection class Cooling water quantity Type of cooling water ±24V / max. 10A Approx. 15 kg 3 g / 5 g Based on IP64 (when plugged into fibre) 1,4 l/min at least, depending on the laser power used Suitable for DI water (stainless steel version) Conductivity 2 μs/cm Ambient temperature range Storage: -25 C to 70 C, cooling water drained During operations: 10 C to 45 C, non-condensing Monitoring camera Power supply Video signal 24V BAS Controller Fieldbus types Selection of: Profibus, Interbus, Profinet, Devicenet Number of assigned words: 6 Parameterization using facility PC; communication with RLH controller via TCP/IP Optical specifications Operating wavelength Fibre coupling Permissible laser power Total divergence angle / angle of acceptance 1000 to 1080 nm Selection of: Trumpf B and D, and Optoskand models QBH and MMI Max. 6 kw 250 mrad (99% power capacity) Beam parameter product, laser power unit Track width, max. in TCP Better/equal to 25 mm mrad 50 mm (in the regular system; extensions possible) Page 6 of 6