BOBIER METROLOGY SOLUTIONS
Accuracy - Productivity - Precision
CAD Model Inspections
What Are the Benefits of CAD Model Inspections?
Programming Speed via Off-Line Programming
Utilizing the CAD model to program the inspection device allows the programming process to begin without a physical part.
If FAI is required, the programming can not take place until the first part has been dimensionally inspected. Precious time will be lost, plus causing the manufacturing plant to halt production until the inspection program is written and the first article inspection is completed.
ACCURACY OF INSPECTION
Without a CAD model the programming process is accomplished by utilizing a physical part, which could be out of specification. The inspection device is moved around the part via joysticks to create the various geometric elements. The part is then probed using joysticks to move around the part and record points. This method is slow and contributes to error due to in accurate vector touches on the part. The joysticks are creating the line or path of the touch, not the micron accurate inspection machine controller.
CRASH AVOIDANCE
Under joystick control it is easy to forget a clearance move causing ga crash when the actual part is inspected. Using off line programming, with the CAD model, clearance moves are created automatically. When the offline program is complete, the program can be run in simulation mode to check for collisions.
INSPECTION REPORTS
If CAD is used for the program creation, it can also be used for the inspection report. The CAD model is centered on the CRT and the key process points (KPC's) are targeted with an arrow at the same time a inspection results box is created. This eliminates the requirement to read though a inspection report (sometimes 100 pages or more) identified by only a dimension number, which may not relate to the print.
If the inspection device is capable of scanning, then a color error map can be created from the data. A picture is worth 100 pages in this instance.
Programming Speed via Off-Line Programming
Utilizing the CAD model to program the inspection device allows the programming process to begin without a physical part.
If FAI is required, the programming can not take place until the first part has been dimensionally inspected. Precious time will be lost, plus causing the manufacturing plant to halt production until the inspection program is written and the first article inspection is completed.
ACCURACY OF INSPECTION
Without a CAD model the programming process is accomplished by utilizing a physical part, which could be out of specification. The inspection device is moved around the part via joysticks to create the various geometric elements. The part is then probed using joysticks to move around the part and record points. This method is slow and contributes to error due to in accurate vector touches on the part. The joysticks are creating the line or path of the touch, not the micron accurate inspection machine controller.
CRASH AVOIDANCE
Under joystick control it is easy to forget a clearance move causing ga crash when the actual part is inspected. Using off line programming, with the CAD model, clearance moves are created automatically. When the offline program is complete, the program can be run in simulation mode to check for collisions.
INSPECTION REPORTS
If CAD is used for the program creation, it can also be used for the inspection report. The CAD model is centered on the CRT and the key process points (KPC's) are targeted with an arrow at the same time a inspection results box is created. This eliminates the requirement to read though a inspection report (sometimes 100 pages or more) identified by only a dimension number, which may not relate to the print.
If the inspection device is capable of scanning, then a color error map can be created from the data. A picture is worth 100 pages in this instance.