Code courses are developed and presented by respected industry experts who understand and can communicate code and standard relevance and their impact on safety, quality and integrity. Nas 1638 national aerospace standard the nas system divides particles in 5 particle size ranges. Proposal of a machining test of fiveaxis machining centers. Iso isotc 39sc 2 test conditions for metal cutting. The courses provide premier training on critical asme codes and standards. This standard applies to hexagon slotted and castle nuts with metric coarse and fine pitch thread and nominal thread diameter. Machining tests to identify kinematic errors on fiveaxis. As earlier noted, there is no fod prevention guidance material that provides a holistic approach for achieving a successful fod prevention program better than the standard. Nas979 national aerospace standard is a spec for testing a cnc machine. The original circlediamondsquare, without the inverted cone, was developed in 1966 as a test part for computer numerically controlled cnc machining centers. A guide for using this standard b thermal environment verification tests c seismic vibration verification tests d electrical power monitoring tests e machine functional tests f machine leveling and alignment g clarifications for cutting performance tests h laser and machine scale corrections i drift checks for sensors. Nas 412, foreign object damage foreign object debris fod prevention nasastd6016, standard materials and processes requirements for spacecraft iso90009001as9100 quality management standard if applicable add any customer or other regional documents that might apply 4.
Nas979 your online library of us and international standards. National aeronautics and fod prevention at nasamarshall. Din 979 20 edition, august 1, 20 hexagon thin slotted and castle nuts metric coarse and fine pitch thread, product grades a and b. Since it is only standard well known describing a fiveaxis machining test, it is widely accepted by many machine tool builders as one of final performance tests. It involved a circle and a square at 45 degrees and some other cuts. Nas 412 is a national aerospace standard nas developed and published through the aerospace industries association aia. There is a test you can run to check the accuracy of your cnc mill. Data sheet by aerospace industries association national aerospace standard, 01151969.
However, this standard cannot be applied to the tilting. Subject matter experts from aia member companies participate in committees and working groups to develop and maintain the nas library, which currently contains over 1400 active standards. Uniform cutting tests nas series metal cutting equipment specifications. Five axis machining plan for a sample aerospace part provided by airbus. If you have access to gage blocks, or 123 blocks,or some kind of known standard, stack them together and measure them using a test indicator in the spindle and the blocks held in a vise or clamped to the table. Sample mold part being used by the stepnc machine machining partners in the upcoming round of machining demonstrations to show machining portability. Sample transmission case being used by the stepnc machine development partners in the upcoming round of machining demonstrations to exercise capabilities with multiple setups. Pdf machining tests to identify kinematic errors on five. Submit a quote for a custom tool assesment or pricing on any standard or nonstandard tooling. Owing to nas 979 describes a cutting test for fiveaxis machine center with a universal spindle, several conditions for ctype machine tool have not been defined yet. Foreign object elimination foe elements of basic awareness. Provides a standard for the selection of cutting tests required to evaluate the performance of conventional and numerically controlled machine tools noted in paragraph 1. Proposal of a machining test of fiveaxis machining. Standard fod training is needed for support personnel accessing numerous fod sensitive areas to tailor nas 412 to address fod concerns specific to msfc hardware and facilities nas 412 was written with aircraft in mind while establishing a sound framework for fod prevention, it does not adequately address some fod hazards that.
The national aerospace standards nas are voluntary standards developed by the aerospace industry. National aerospace standards aerospace industries association. Nas standards brochure aerospace industries association. Boeing uses the following documents for definition of a fod program. Iso 107917 is also test conditions for machining centreregarding accuracy of finished test piece. Nas 979 aerospace test piece made of stainless steel youtube. There is an increasing demand for realtime fault detection, and avoidance of destructive postprocess testing. The real test also has some other features such as a 5 ramp and possibly a few more. Require this standard as a guide to be used with an end use type standard such as milstd1471 or milstd1515. The standard, iso 107917, describes a machining test to evaluate the machines machining accuracy, but it is only for threeaxis machining. Does nas test includes boring operation of 4 holes. Aerospace standard, nas 979 circlediamondsquare with an inverted cone 5. Nas 979 has been used for over 40 years as a performance evaluation standard for fiveaxis machining centers.
Data sheet by aerospace industries association national aerospace standard, 10311971. Anjan dave, principal storage engineer, lsi corporation. Kraus guidelines for prevention and elimination of fod. Nas 1823 interconnecting devices, electrical, wire terminating, bussing arrangement, blocks, nonfeedthru, contact size 20.
Nas979 uniform cutting tests nas series metal cutting. A particle count will show up to have almost the same nas class rating within the different particle ranges. Foreign object damage fod any damage that has occurred to aircraft, vehicle, or persons, which can be attributed to an alien substance or article fo that has invaded any component of, on, or in an aircraft. Foreign object damage fod prevention program requirements. Foreign object damage debris as9100 requires an organization to have provisions for the prevention, detection, and removal of foreign objects. Nas 979 national aerospace standard is a spec for testing a cnc machine.
Nas standards are published and ed by the aerospace industries association aia. Three and five axis machining plans for a nas 979 circlediamondsquare with an inverted nas 979 cone test in. In current iso standards, there is no description of a machining test for fiveaxis machining. Feed drive ac servo drive with re circulating ball screw for all linear axes 4. This paper proposes a cutting test for a nonorthogonal swivel head and a rotary table type fiveaxis machine tool c type to evaluate its performance.
Foreign object elimination foe a program or process used to assure a fod free product or system. Nas 979 uniform cutting tests nas series metal cutting equipment specifications. Toolpath planning and simulation for cutting test of non. Nas 979 test part programmed using siemens 840d vector format and backplotted using cimco edit v7. Aia is the national trade association representing u. Pdf the machining of a cone frustum as specified in national aerospace standard nas 979 is widely accepted as a final performance test for fiveaxis. Plans for either english or metric tools, as well as three and five axis plans. This standard provides some finishing conditions of the conefrustum under fiveaxis control, and prescribes the measuring methods and permissible tolerances of geometric deviations.
Uniform cutting tests nas series metal cutting equipment specifications data sheet by aerospace industries association national aerospace standard, 01151969 view all product details. A machining test to evaluate geometric errors of fiveaxis. The national aerospace standard nas 979 describes a fiveaxis machining test of a cone frustum. Accuracy of a finished test piece, international organization for standardization. Nas 979 national aerospace standard test part youtube. This will only give you linear error, but its a start and something you can do yourself. The committees below can access the documents of isotc 39sc 2. Both metaltometal and selflubricating bearings are featured in this catalog. Fod prevention assessment criteria i assessment tool developed from nas 412 author. Require this standard as a guide to be used with an end use type standard such as. Use of other keys and pins requires approval of the government procuring activity.
Din 979 pdf online download and large discount to order now in spain. Plain bearings engineering rbc offers many types and sizes of plain bearings to the aerospace industry. Machining the test part was part of a number of tests to evaluate machine performance. Feed drive ac servo drive with re circulating ball screw for. These bearings have been qualified to stringent sae, military, nas, aecma, and customer design and performance standards in rbc test laboratories. Technical specification for cnc horizontal milling machine. According to the national aerospace standards nas 412, most foreign object damage is attributable to four factors. Jun 15, 2015 nas 979 test part programmed using siemens 840d vector format and backplotted using cimco edit v7. Understanding enterprise network attached storage nas with the continuous growth of unstructured data, it has.
272 296 1571 545 681 997 1153 905 22 173 1557 873 508 782 1204 83 811 789 455 1630 893 546 1048 737 1067 326 543 1237 1637 1386 48 1250 927 12 219 1450 549 1098 49 935 1455 XML HTML