391 Каталог KORLOY 2020 Инструмент и оснастка для станков по металлу Стр.D7

Каталог KORLOY 2020 Инструмент для станков по металлу Стр. D7 0391 Lab2u

Technical Information for Threading O Step by step thread turning Application Thread: External right hand ISO metric M40x2.5 Material: 4140 (25 HrC) 1 Choose the thread turning method 2 Choose the insert size Feed direction towards the chuck was chosen Therefore an external right hand insert and an external right hand holder will be used Insert size Pitch Ordering code Shim Tool holder d mm RH (Right Hand) RH (Right Hand) 9.525 2.5 ER16-2.5ISO ATE16 ERHHO-16 3 Choose the tool holder 4 Determine the helix angle T w IT Chosen tool holder: ERH 25-16 Insert size Ordering code Dimensions (mm) d RH (Right Hand) H=h W S L I 9.525 ERH25-16 25 25 25 153.6 30 From the table, using a pitch of 2.5 mm(10 tpi) and a workpiece diameter of 40 mm (1.57”), we find the helix angle to be 1.5° Choose the correct shim Choose the carbide grade and cutting speed Resultant Helix angle 1.5° Workpiece HB vc (m/min) PC3030T Insert size d 9.525 P Low alloy steel (alloying elements 5%) Non-hardened 180 85 145 L 16 Hardened 275 75 140 Ordering code ATE16 Hardened 350 70 135 Determine the number of passes 8 Pitch mm 1.50 1.75 2.00 2.50 3.00 3.50 4.00 tpi 16 14 12 10 8 7 6 No.of passes 6 10 7 12 7 12 8 14 9 16 10 18 11 18 Carbide grade chosen: PC3030T Cutting speed: 140 m/min Carbide grade chosen: PC3030T Cutting speed: 140 m/min Summary Thread type ISO M40 x 2.5 External right hand 1. Feed direction Towards the chuck 2. Insert and grade ER16-2.5ISO, PC3030T 3. Tool holder ERH25-16 4. Helix angle 1.5° 5. Shim ATE16 6. Cutting speed 140 m/min 7. Number of passes 10 Threading Jm 7