Patent GB-303322-A (GB)
Title: Improvements in machines for gauging taper rollers
IPC: B07C5/08
Filed: 1928-04-30
Abstract: 303,322. Skerrett, H. N., (Timken Roller Bearing Co.). April 30, 1928. Separating and sorting gauges.-Relates to that type of gauging machine in which the diameter of taper rolls is measured by the distance the rolls project axially from an accurately tapered socket and comprises a plurality of gauging devices, an indexing mechanism for supporting conical rolls on their small ends and carrying the rolls into alignment with the gauging devices, separate socket members for receiving and supporting the rolls when in alignment with the gauging devices, and means for moving the gauging devices towards the rolls. The rolls 3 are fed one at a time into pockets 4 of the indexing ring 2 the rotation of which brings the pocket into alignment with contact plungers 66 of gauging devices 39, each roll resting on a knock-out pin 72. The indexing ring 2 is rotated intermittently by a worm gear 20, 21, shaft 19, mitre wheels 18, pin wheel 14, Geneva mechanism 10 and gear 8. A cam 30 on the shaft 19 raises and lowers a spider 33 supporting a carrier 36 which carries the gauging devices 39. As the parts are lowered, the pins 72 drop down into sockets 70 permitting the rolls to drop into tapered sockets 71. The gauging takes place at the lower end of the stroke of the carrier. The devices 39 are arranged so that the largest roll will be ejected at the first gauging station and the next smaller roll at the next station and so on. The plunger 66 feels the end of the roll, and if the diameter is large and the end projecting upwards, the plunger is forced upwards to tilt the lever 42, swinging the other end of the lever against the pressure of the spring ball 46 so that the spring contact 58 is pressed against the contact 59 to close the circuit of an electromagnet 74 which attracts the armature 75 the other end 76 of which forms a gate supporting the roller in the socket. The roller is thus allowed to drop into a shoot 77. The armature is reset by a pin 78 on the carrier ring 36 one of which is provided for each armature. Each pin 78 carries at the upper end a pivoted pawl 79 adapted to engage a shoulder 80 on the armature when the gate is open and the carrier 36 is at the upper limit of the stroke. The downward movement of the carrier will push back the retracted armature and gate due to the angular position of the pawl 79 relative to the pin 78. The armature is reset before the end of the downward movement and further downward movement tilts the pawl about its heel 81 so that the point 80 is clear of the shoulder and allows the armature to be retracted if the magnet is energized. After the gauging operation, the carrier 36 moves upwards and the knock-out pins 72 push the rollers out of the taper sockets into the pockets 4, the tops of the pins 72 resting flush with the tops of the sockets. When the upward movement has terminated, the indexing ring 2 is rotated one step during which any rolls that have actuated gauging mechanism 39 drop out of the open sockets 4. The other rolls ride over the closed gates and are carried to the next gauging position where the operation is repeated.