今天的计算机数控（CNC）触控探针技术可以产生精确到10微米（0.00039英寸）的轮廓。然而，对于大多数高精度加工零件（如高精度齿轮），现代公差正接近1微米的水平。CNC触控探针机器无法提供该级别检查和验证所需的精度或速度。光电技术提供了另一种途径，开启了非接触、微米级检测的新世界。本文介绍了传统光电断头台的实现。光学断头台（OG）测量仪是标准光条纹测量仪和激光三角测量设备上的独特扭转。独特的设计缓解了传统的景深、透视失真和像素分辨率问题。虽然OG技术最初是

TODAY'S COMPUTER NUMERICAL CONTROLLED (CNC) TOUCH-PROBE TECHNOLOGY CAN PRODUCE PROFILES ACCURATE TO ABOUT 10 MICRONS (0.00039 INCHES). HOWEVER, MODERN TOLERANCES ARE APPROACHING THE ONE MICRON LEVEL FOR MOST HIGH-PRECISION MACHINED PARTS (SUCH AS HIGH-PRECISION GEARS). CNC TOUCH PROBE MACHINES CANNOT PROVIDE THE ACCURACY OR SPEED NEEDED FOR INSPECTING AND VERIFYING AT THIS LEVEL. ELECTRO-OPTICAL TECHNOLOGY ALLOWS ANOTHER AVENUE OF APPROACH, OPENING A NEW WORLD OF NONCONTACT, MICRON-LEVEL INSPECTION. THIS PAPER DESCRIBES AN ELECTRO- OPTICAL IMPLEMENTATION OF THE TRADITIONAL GUILLOTINE GAGE, BUILT OF OFF-THE-SHELF COMPONENTS. THE OPTICAL GUILLOTINE (OG) GAGE IS A UNIQUE TWIST ON STANDARD LIGHT-STRIPE GAGES AND LASER TRIANGULATION DEVICES. A UNIQUE DESIGN ALLEVIATES TRADITIONAL DEPTH-OF-FIELD, PERSPECTIVE DISTORTION, AND PIXEL RESOLUTION PROBLEMS. ALTHOUGH THE OG TECHNIQUE WAS ORIGINALLY