| 摘要 |
PURPOSE:To obtain rapid and correct operation of bending within a semispherical face by crossing crank gears engaged with a drive gear and a drive gear engaged with a main gear at 90 deg. for connecting both of them by means of E- shaped support arms. CONSTITUTION:Crank gears 6 and 7 engaged with a drive gear 8 and a drive gear 13 engaged with a main gear 11 are crossed at 91 deg., and the main gear 11 and the crank gear 6 and 7 are connected with E-shaped support arms 4 and 5, while an oil-pressure oscillating motor 16 is connected with drive gears 8 and 13. This construction permits to obtain rapid and correct operation of bending within a semispherical face of a gear case 15 on the basis of the combination of the bending movements within a semi-circle by the main gear 11 and E-shaped support arms 4 and 5.
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