| 摘要 |
1311809 Grinding OWENS-ILLINOIS Inc 22 June 1970 [23 June 1969] 45265/71 Divided out of 1311808 Heading B3D [Also in Division F2] The subject-matter of the present Specification is identical with that described in Specification 1,311,808 but the claims are directed to a motion converting device comprising a slideway revolvably mounted on a carriage, means for periodically revolving the slideway in controlled increments about its axis of rotation, a slide co-operating with the slideway and displaceable transversely of the rotational axis of the slideway, an adjustable stop on the slideway for limiting the displacement movement of the slide in the slideway to an adjustable and determinable amount, bias means urging the slide towards the stop, and stop means on the carriage which limit the displacement of the slide towards the stop on the slideway by different amounts at different rotational positions of the slideway before engagement by the stop. The device is used in apparatus comprising a frame 28, Fig. 1, having guide rods 30 along which a carriage 32 is reciprocatable between limits determined by engagement of a stop 80 with limit switches 82, 84 by an electric or hydraulic motor 35 having a rod 36 connected to the carriage. An extension of the shaft 36 is journalled in bearings 38, 40 and has a wormwheel 42 engaged by a worm 44 drivable by a stepping motor 46. A bracket 48, Fig. 4, is secured to the lower end of the extension of shaft 36 and is formed with a guideway for a slide 50 which is urged towards an adjustable stop 54 by a spring 52 or fluid motor and carries a holder 26 for a shaft 62 which carries either a motor and grinding wheel used for producing enlarged circular cavities in a mirror or the motor 24 and tool 66 for producing hexagonal cavities. A follower 58 is carried by the slide 50 for engagement with a hexagonally-shaped cam 60 secured to the frame. |
