Общий каталог Yamawa 2021 - страница 702

• Copertina
• Capitoli web
• Parte finale web

direction of tapping direction of tapping 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 PO Excessive-cutting of the thread Tap with excessive feeding 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 ofexcess 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 THREADS, too slow feeding GAUGES Workpiece Distance ofexcess feeding Process opposite of excessive feeding factors causes extra material cutting at back frank. THREAD MILLS Tap over-cutting during tapping  The tap mounting condition in the holder. DIES The condition of bored hole. SolutionsFeed adjustment is strongly recommended. The cutting oil selection. Incorrect adjustment of feed balance. • (Use fully synchronous feed system and fixing holder) Selection of the tap depending onWhen using machines that do not have thesynchronous feed system, such as drilling machine.material being cut.CENTERDRILLS • Adjust the correct weight balance of main spindle properly. • Use an axial/radial floating holder for adjustment. Technical info 703