SU91692A1 - Semiautomatic device for abrading with an emery wheel of cylindrical or conical external surfaces of parts - Google Patents

Description

Grinding machines with several spindle mounts mounted in a revolving drum that periodically rotates using the mechanism of the Maltese cross are known. Driving spindles mounted in the rotary drums of these machines, receive periodic rotation only in the working position.

Distinctive features of the described semiautomatic device in Tou, that in it, on a common axis with a revolving drum, a disk is fixed, which carries movable axes and coaxially with spindles sliders. The latter interact with the clamping device of the drive spindles receiving movement from the fixed face cam.

These features are provided by automatic fixing of the details before processing and their release before the loading position, which is new and useful.

FIG. 1 shows the kinematic diagram of the machine; in fig. 2 is a view of the node L in FIG. 1 on an enlarged scale.

The spindle head 1 of the semi-automatic machine bears the grinding wheel 2 and the electric motor 3 driving it in rotation.

The reciprocating movement of the table 4 of the machine is carried out from the electric motor 5 through a screw pair 6, a copy drum 7 and a copy finger 8.

The revolving drum 9 is periodically rotated with the help of the Maltese cross 10, which receives rotation from the electric motor 5 through a worm pair 6, conical pairs It, 12 VL leash 13. The latch 14 under the action of the spring / 5 enters one of the grooves of the drum 9 and stalls him. At the time of rotation of the Maltese cross, the cam 16, acting on the intermediate cam roller, removes the latch 14 from the groove of the drum 9.

Through gears 17, 18, 19 and 20, the gear 21 is seated, sitting on the shaft of the drum 9. In front of the working position gear 22 according to No. 91692-2 vodka spiny, pdx-1. "": D5 spring 24 is engaged with gear 21 and spindle., starts vrash, eats. During the rotation of the drum, the lever 25 is pressed by the cam 26, the gear 22 disengages from the gear ../, and the spydel 23 stops.

On a common axis with a revolving drum 9, a disk 27 is fastened, carrying coaxially with the driving spindles 23, sliders 28, movable in the axial direction. The workpiece is inserted into the seat on the mandrel and is pre-fastened using manual spring clips to prevent it from falling out or moving to the working position, transferring the handle 29 from position 30 to position 31.

In the working position, the shank of the slider 28 is incident on the stationary face cam 32, the spring 33 is compressed, and the part is clamped securely between the spindle and the slider. At the end of processing, the handle 29 under the action of the copier 34 is retracted to its original position, and the released part rolls along the guide tray into the collection.

Subject invention

Claims (2)

1. Semi-automatic for grinding the emery wheel of cylindrical or conical outer surfaces of parts using a transversely movable headstock with an emery wheel and a revolving drum receiving rotation by means of a Maltese cross and carrying several powered spindles receiving rotation in the working position and fitted with a fastening device parts, characterized in that. In order to automatically fasten parts in front of the working position and release them in front of the loading position and removal of parts, it uses a disk mounted on a common axis with a revolving drum, carrying coaxial axles with slide shafts, axially movable axially, sliding spindles and receiving motion from a fixed face cam. 2. The form of the semi-automatic device according to claim 1, characterized in that in order to prevent parts from falling out or moving to the working position, the slides coaxially with the push-off spindles are provided with manual spring clips for preliminary fastening of the parts. C2