Общий каталог Yamawa 2021 - страница 702

• Copertina
• Capitoli web
• Parte finale web

19. The mechanism for a tap to cut oversize on an internal thread Intro 3. Tapping with an improper feed condition over-cutting at axial direction SP Process of over-cutting due to excessive feed  With cutting edge b1, cutting starts. Not Go gauge SL Workpiece Cutting part by b1 Excessive-cutting of the thread PO Tap with excessive feeding direction of tapping ST  Position between workpiece and tap after the tap rotates 1 turn. Distance of excess feeding Workpiece ROLL Cutting trace by b1 CARBIDE Tap  Position between workpiece and tap after the tap rotates 2 turns. LONG Workpiece Distance of excess feeding HAND TAPS Tap EG (STI) The position between workpiece and tap after 3 rotations of tap. Not Go gauge SPECIAL Over-cutting of the thread by too slow feeding THREADS, Distance of GAUGES Workpiece excess feeding Process opposite of excessive feeding factors causes extra material cutting at back frank. THREAD MILLS direction of tapping Tap over-cutting during tapping  The tap mounting condition in the holder. DIES  The condition of bored hole. Solutions  The cutting oil selection. Feed adjustment is strongly recommended. Incorrect adjustment of feed balance. • (Use fully synchronous feed system and fixing holder) When using machines that do not have the Selection of the tap depending on CENTER material being cut. synchronous feed system, such as drilling machine. DRILLS • Adjust the correct weight balance of main spindle properly. • Use an axial/radial floating holder for adjustment. Technical info 703