SU28092A1 - Adaptation to a milling machine for cutting slots in nuts - Google Patents

Description

Adaptations to milling machines are known for cutting splines on an endless chain of nuts with sockets for automatically feeding products from the store and dropping them after processing, able to reciprocating and subsequent turning movements from the machine wire. The present invention proposes to use a tooth with a number of teeth according to the number of faces of a nut, which interacts with a fixed finger on a reciprocating movement of a table, to rotate a chain. To secure the products during processing, it is proposed to use clamps with inclined cuts, in which the fingers of the half-ring moving to drive the clamps are included.

In FIG. 1 shows a general view of the device from above at the beginning of the working stroke of the table; FIG. 2 is a longitudinal section; FIG. 3-detail of the clamping device in section along the line AB of FIG. one; FIG. 4 shows a magazine for billet nuts in section along the line CD in FIG. one.

The device consists of a plate 7, on which are fixed two disks 2 and 3, with gear rims 4, on which a chall chain is put. The disk J, moreover, has recesses in the lower bed for the stopper 72. In the very lower part of the disk 3 there is a gear

7J with six prong f4. A box 7 is fastened on each top plate 6 of the chain. A bunker 75 is installed on the conveyor path, in which the nut blanks are loaded, held by the spring 7d.

The device is mounted on a table of a horizontal milling machine that receives reciprocating motion; during the return stroke, the machine table must be released. The direction of the working stroke is shown in FIG. 1 arrow. For slotting the nuts on the spindle of the machine, three disk milling cutters are fixed at the required distances.

For the operation of the machine, blanks 75 are loaded into the hopper 75 to the top, and the spring 76 holds them. Then the machine is launched. During the reverse course of the table, thanks to its lowering, the finger 77 touches the end of the notched 7J and turns the disk 3 to one sixth of the circle. The stopper 72 at this moment enters the corresponding recess of the disk 3 and controls the rotation of the disk. Together with the disc, the chain 5 also moves, and the box 7 with its protrusion 7 pushes the spring latch J6 of the bunker 75 and the lower nut lowers into the box 7. After two strokes

On the table, the first nut comes to position I, where it is clamped between clip 8 and disc 2. Both clip 8 and disk 2 have cutouts corresponding to the front of the nut. Half ring 9 presses and presses the clamps with the fingers W moving in slots 25. When the table has a working stroke, the lower finger 20 of the half ring 9 slides over the slot 2 / plate associated with the machine bed (not indicated in the drawing) and thanks to the fingers JO, located in the inclined slots of the clips 8, and the springs / 9, the clips firmly hold the nuts in which the slotting is made during each movement of the table. During the reverse course of the table, thanks to lowering it, the lower finger 20 of the half-ring 9 falls into the groove 22 of the same plate 27, but located below, and keeps all the clamps open, as the half-ring 9 has moved to the side with JO fingers sliding in the inclined slots , ottru clamps back. At this point, finger / 7 rotates the entire system by one sixth of a circle.

When the nut is in position I, the working stroke of the table allows to obtain splines using an extreme milling cutter. When the table makes the second working stroke (the cut nut has moved to position II), the middle cutter cuts it again at an angle of 60 ° to the first cut. At the same time, the extreme milling cutter makes the first slot in the newly fitted nut in position I.

At the third working stroke of the table, the nut with two notches moved to position P1, with one slot-to position II, and the new nut came to position I, all three mills cut through all the nuts one by one. After that, in position III, the nut is already ready. When the chain is further rotated, the cut nuts approach the spring M. Due to the fact that the end of the springs is below the box 77, this box with the lugs 7 gradually bends the spring 74 downwards. Projections 75, come on to. The cutouts 24 of the spring 74 fall into them, and the spring J4, straightening out, throws the finished nut onto the inclined tolot not shown in the drawing.

The subject of c, d about b ete e n.

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Attachment to a milling machine for cutting splines in nuts, consisting of: an endless chain with sockets for: products receiving reciprocating movements and subsequent rotational movements from the drive of the machine, a magazine for feeding products into the sockets and a dumper for extracting them different use zubchatki 73, equipped with six teeth, corresponding to the number of faces of the nut and interacting with the reciprocating movement of the machine table with a finger 77, which is fixedly mounted on the machine bed, a rotor of teeth 73 and one sixth of the circumference of an endless chain, supplying in its nests the product to the clamps 8, provided with inclined cuts 25, interacting with the fingers 70, sliding in the half-ring groove 9 of the base 7 of the fixture; 20, driven by the translational movement in the slots 2t 22 for moving the clips 8.

to the author's certificate of V.P. Salina

K-28092

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