The gauge management software QMSOFT®

Modules

Inspection program QMSOFT® / QM-TAPTHREAD

The inspection program QMSOFT®/QM-TAPTHREAD is designed as a support system for the computer aided inspection for taper pipe threads and taper thread gauges. All thread nominal values can be generated through this program in accordance with the following standards:

• Pipe Threads, General purpose (NPT..) according to ANSI/ASME B1.20.1 - 1983
• Pipe Threads where pressure-tight joints are made on the threads acc. to ISO 7-2:2000
• Pipe threads for tubes and fittings according to BS21:1985
• Metric External Taper Screw Threads according to DIN 158
• Gages for Dryseal Pipe Threads (e.g. NPTF..) according to ASME B1.20.5-1991
• Whitworth Pipe threads for threaded pipes and fittings acc. to DIN 2999 – July 1983

Attention: The measurement process for taper threads requires a special hardware environment. In case that the thread diameter is defined in a special gauge plane, you need the possibility to get the readings of two axes. One axis to measure the gauges diameter and the second one to determine the distance to the gauge plane. Tthe user should be familiar with the guidelines being applied as well as the measurement procedure for the inspection of screw thread gauges.

The primary function of the program is to calculate all of the required gauge sizes and tolerances according to the thread standards and type of gauge being applied (for example: Screw thread GO ring gauge). Any limitations of the applied standard will be pointed out. After selecting the standard, the type of gauge, (for example: Screw thread GO ring gauge) and entering the thread designation, for example: “R1”, all of the required gauge nominal values and tolerances will be calculated automatically. The limitations and restrictions of the norms being applied will be indicated. The program supports the nominal value generation and the measurement process for all types of thread gauges being standardized and also for all types of plain gauges used to check the minor or major diameter of screw threads.

Results can be produced on the screen and/or the printer and/or in a file. The nominal values of the gauge will be processed in connection with the inspection conditions and the measurement results in the results record. Tolerance excesses are marked and identified. It is possible to customize calibration certificates using the so called "certificate layout files" (templates).

The program can be started up directly from the QMSOFT®/QM-MANAGE gauge data management system. In this case it will receive all necessary nominal data necessary directly from the data base. At the end of the inspection the results and the calibration certificate will automatically be transferred back to the data base program.

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