Обший каталог Yamawa 2016 - 2017 - страница 536

Предыдущая страница Следующая страница

Навигация

Special Thread Taps / Simple Inspection Tools Spiral Fluted Taps (for blind hole) SITD（Tandem Type） Simple Thread Inspection Tools, Tandem Type Spiral Fluted Taps (for through hole) Specification For icon explanation, refer to P.50 Spiral Pointed Taps (for through hole) TYPE：1 TYPE：2 Hand Taps Cemented Carbide Taps Product features ●Under normal inspection procedure, the finished thread is checked by a 2- time process, that is, by using GP GO gauge and then by using NP/WP NO-GO gauge. By using Yamawa Thread Inspection Tool, the thread inspection can be done in one single Roll Taps process. ●SITD, attached to a measuring machine, enables the mechanical measuring. ●Even in difficult-to-insert thread inspection such as checking smaller sizes and/or finer pitch threads, smooth inspection becomes possible due to the step screw thread mechanism adopted to SITD. ●What is the「SITD」? Special Thread Taps Simple Inspection Tools 　Both GO part and NOT-GO part are embedded in one tool. ●Cleaning groove 　Cleaning groove of the thread portion helps to remove the small dirts left inside the internal threads and hence allows for the Cleaning groove GO part (GB-6H) NOT-GO proper inspection procedure. part Pipe Taps (NB-6H) Accuracy of SITD Thread Mills In SITD, tolerance of simple pitch diameter, pitch tolerance and tolerance of thread half angle, 3 important factors on measuring internal screw threads, are same with those of thread plug gauge. ■Comparison between GB-6H/and GP-6H/thread plug gauge unit：mm ■Comparison between NB-6H/ and NP-6H/thread plug gauge unit：mm Dies Pitch Tolerance Pitch Tolerance OD PD tolerance for thread OD PD tolerance for thread Size half angle Size half angle Basic Max Min Tolerance Basic Max Min Tolerance （±） （± minute） Basic Max Min Tolerance Basic Max Min Tolerance （±） （± minute） size size size size GB-6H 6.000 6.023 6.001 0.022 5.350 5.3675 5.3565 0.011 0.005 15 NB-6H 5.7055 5.7165 5.6945 0.022 5.500 5.511 5.500 0.011 0.005 16 M6 × 1 M6 × 1 GP-6H 6.000 6.023 6.001 0.022 5.350 5.3675 5.3565 0.011 0.005 15 NP-6H 5.7055 5.7165 5.6945 0.022 5.500 5.511 5.500 0.011 0.005 16 Center Drills M6 × 1 M6 × 1 The pitch diameter is simple pitch diameter. Pitch tolerance includes error of thread lead. The pitch diameter is simple pitch diameter. Pitch tolerance includes error of thread lead. ※Main specification of SITD is same with that of thread gauge. But SITD has partly Yamawa's own design in the length of thread and bottom part relief. Due to these features, Yamawa has adopted the name "Simple Inspection Tool or SITD" instead of using the name "thread gauge". Centering Tools JIS ST-9 532 For improvement, spec may change without advance notice.