scispace - formally typeset
Search or ask a question

Showing papers on "Gear shaping published in 1985"


Patent
18 Jul 1985
TL;DR: In this paper, a gear shaping process by means of intermittent generating motion, since a center distance is constant, remains in zero as shown in the center distance variation, is discussed.
Abstract: PURPOSE:To dispense with relief motion in a gear blank headstock, by leaving generating rotative motion stopped in dwell at a section ranging from what a pinion cutter starts shaping a gear blank to what it returns to its original position, which cuts a gear by means of reciprocating linear motion or reciprocating screw motion CONSTITUTION:In a gear shaping process by means of intermittent generating motion, since a center distance is constant, a center distance variation A in illustration remains in zero as shown in a center distance variation 33 Generating pitch circle circumferences C and G of a pinion cutter 1 and a gear blank 2 perform generating rotative motion intermittently as shown in points 27-28 and 31-32 whiles ranging from a point 17 where the pinion cutter 1 passes through tooth width B of the gear blank 2 at its return stroke to a point 19 where it starts the next cutting by way of a stroke uppermost end 18 And, a section ranging from a cutting start point 13 of the pinion cutter 1 to return strokes 16-17 by way of a stroke lowermost end 15 of a cutting end point 14 is made to leave the generating rotation stopped in dwell Length, making the pitch circle circumference C of the pinion cutter 1 shift to points 25-26 and 27-28, is of generating feed per stroke

3 citations


Patent
05 Sep 1985
TL;DR: In this article, a helical spiral rack machinable on a shaft's circumference was constructed by letting a gear shaping machine hold a shaft-like work in orthogonal with the moving direction of a pinion cutter, while synchronizing movements and rotation in the axial direction with rotation of the cutter.
Abstract: PURPOSE:To make a helical spiral rack machinable on a shaft's circumference, by letting a gear shaping machine hold a shaftlike work in orthogonal with a moving direction of a pinion cutter, while synchronizing movements and rotation in the axial direction with rotation of the cutter. CONSTITUTION:A bed 1, a column 2 and a carrier 3 all serve as a main body in this gear shaper. Q cradle 4 locked on the carrier 3 supports a rocking table 6 free of rocking motion in a direction toward arrows (a) and (b) via a fulcrum shaft 5. A worm wheel 10 is locked to this rocking table 6, while a worm 7 installed rotatably in the cradle 4 engages this worm wheel 10. A tilt angle of the rocking table 6 is determined by contacting a gauge block 9 and a semicircular block 11. A carriage 14 is mounted on the rocking table 6 free of rocking motion in an arrow (c) direction. Holding a work W with a chuck 16 and a tailstock 17, when this work is machined by a pinion cutter 18, if rotation of the cutter 18 and axial movement of the work W are synchronized, a spiral rack is machinable.

1 citations


Patent
26 Jul 1985
TL;DR: In this article, a gear shaping tool comprising a circular body, a plurality of seats disposed around the periphery of the body, and working tips held on the respective seats, wherein the seats and tips have triangular surfaces for easy and reliable alignment with each other, with a supporting surface connected to the body disposed below each tip.
Abstract: A gear shaping tool comprising a circular body, a plurality of seats disposed around the periphery of the body, and a plurality of working tips held on the respective seats, wherein the seats and tips have triangular surfaces for easy and reliable alignment with each other, with a supporting surface connected to the body disposed below each tip. The tips are easily replaceable by simple fixing of a pin or bolt.