SU1227422A2 - Dividing turntable - Google Patents

Description

2. The table of claim 1, characterized in that, in order to expand the technological capabilities, it is equipped with two unors located on a gear and a leash mounted on the second additional cam, while one of the stops and the leash are mounted respectively with the possibility of alternating surface luecTep1

The invention relates to a machine tool industry and can be used in multi-position automatic machines.

The aim of the invention is to increase the reliability of work and reduce the size of the table.

FIG. 1 shows the proposed table, the cut; in fig. 2 - the same, top view; in fig. 3 shows section A-A in FIG. one.

The table consists of a base 1, in the supports of which a faceplate 2 is installed. On the faceplate 2, a magazine 3 is fixed coaxially with it, made in the form of two shells with details 4. The inner side of the magazine 3 consists of arc-shaped plates 5 fixed to the lines 6, which springs 7 are mounted in an annular bracket 8. Directional 6 interact with the cones 9 and 10, mating with the mandrel 11 with nomopl and threads (left and right), and the stopper TC from the rotation of the bars 12. The mandrel 11 is mounted on a stationary shaft 13. On the last rigidly fixed di 14, which is the bottom of the magazine 3 and in which the feeder 15 of the loading device is located with the possibility of radial mixing. The feeder 15 contains a gate 16 with a spring 17. The magnitude of the departure of the gate 16 is controlled by a nut 18, on which is fixed a roller 19, which interacts with a cam 20 mounted on the shaft 21. The profile of the cam 20 has sections o and (o - constant the area in which the clamping - unclamping of parts 4 takes place; The distance e is the departure of the gate 16 from the part 4 after its submission. A gear 22 is loosely mounted on the shaft 21, which with the half coupling 23 and the spring 24 forms an overrunning clutch 25. In connection with the gear 22 there is a rod rail 26 of the piston 27 and a pneumatic cylinder 28. Inside the UJTOK rail 26 and the piston 27 there is a rod rail 29 with the piston 30. The rod-rod 29 is engaged with the gear 31 of the block 32. Flange and interaction with said stops, and the gear is rotatable relative to the axis of the specified cam.

3. Table according to claim 1, characterized in that the inner shell of the magazine is made in the form of arcuate plates installed with the possibility of radial mixing.

The driver of the piston 2 / is the screw 33, and the piston 30 is the screw 34. The sum of the distances (a + c) that the pistons 27 and 30 pass through is constant and equal to the circumference of the gear 31 (nddiii.-ii, t. e. corresponds to the turn

its 360 °.

The block 32 contains a cam 35 and a coupling half interacting with the half coupling of the block 36, which form an overrunning clutch 37 of the opposite action of the clutch

25. The block 36 consists of two cams 38 and 39. Both blocks 32 and 36 are mounted on the axis 40 and preloaded by the spring 41 to the ring 42. The cams 35 and 38 interact with the pusher 43 of the clamp 44. The plate 2 contains slots 45 with inaroM a. A spring 46 is installed between the pusher 43 and the retainer 44, and the spring 47 is installed between the base 1 and the pusher 43. The cam 39 interacts with the roller 48 of the pusher 49. The latter serves to press the workpiece 4 in the clamping devices consisting of a prism 50, rigidly closed. Replaced on the faceplate 2, strips 51 and 52, skalok 53, screw 54, plunger 55 and cup springs 56. Parts 4 of the feeder 15 fall on the prism 50 through the trays 57. On the axis 58, a NS 59 is installed that meshes with gear 60. The latter interacts with the shaft 21 by means of an adjustable pore 61 and driver 62, forming an angle E between themselves. An emphasis 61 is fixed on gear 60, and a leash 62- on shaft 21. By adjusting the angle E, you can change the angle at which the cam rotates, i.e., the displacement c1 of cb 16 without changing the angle oi of rotation of the faceplate 2. To ensure the supply of parts of different lengths L with different angular pitch a (. installation of clamping mechanisms on the faceplate 2,

5, the following condition must be satisfied;

Y

f x od.

“We T„ “ax-b 2fo4- - - oCmin. aoshbo

(dwaKc at iax and x „;„ „l and„ ais).

J min

where d (3K22 and ё (3shbo - diameters of the pitch circles of gear 22 and gear 60;

F - angle of rotation of the cam 20; fpmax-fn e. - the angle of idle rotation of gear 60. Gear 60 and cam 20 are returned to the initial position by means of a stop 63 mounted on gear 60. An adjustable stop 64 mounted on a stationary shaft serves for reliable rotation of cam 20 by a given angle f 13 and is stopped by a lock nut 65 (FIG. 3). The device operates in the following manner. Initially, the device is adjusted to the length L of part 4, departure C and mixing, d of gate 16. Then load parts 4 and compressed air is fed into the rodless cavity of the pneumatic cylinder 28 according to arrow B (PR - my move). The piston 30 moves with the rod-rod 29 and the gear 31 rotates with the cam 35. When the cam rotates

ormin b min

ka 35 angle

  pads

The faceplate 2 is unfixed, because the spring 47 presses the pusher 43 and it falls into the groove of the cam 38. After the piston 30 has been sampled, it rests against the end of the piston 27. The rod-rod 26 moves and the distance a is selected. The gear 22 rotates the faceplate 2, the parts 4 in the clamping mechanisms are transported to the adjusted angular pitch a, and before turning the pinion 31 for a full turn, the locking 44 of the nest 45 is tracked, since the pusher 43 follows the rise of the Kyvia4Ka 35 profile. the axis of the socket 45 with the axis of the latch 44

pre-fixing occurs. No rotation is transmitted to block 36 as clutch 37 slips. During the movement of the rod rack 26, gears 59 and 60 rotate, angle e is selected, after which shaft 21 rotates and cam 20 is moved to angle φ via stop 61 and driver 62. Roller 19 tracks cam 20 by means of spring 17, and gate 16 leaves the feeder 15 and part 4 falls to its original position.

Then the compressed air is fed into the rod cavity of the pneumatic cylinder 28 in the direction of arrow B (reverse stroke). Moving the elements 27, 30 and returning the slats 26, 29 to their original position. The clutch 25 slips, and the rod-rod rotates the gear 31, and through the clutch 37, the rotation is transmitted to the block 36. The cam 39 presses the pusher 49, which by means of the screw 54 and the bar 52 lifts the rolling pins 53 with the bar 51, and the part 4 is unclamped. Cam 38 at this time presses on the pusher 43. The latch 44 turns and finally fixes the faceplate 2, as the force on it increases. After rotation of the cam 35 and 38 by 360 °, the cam and push rod 43 return to their original position. The stop 63 interacts with the driver 62 and, the gate 16 feeds part 4 through tray 57 to the clamping prism 50, part 4 is released and the feed is clamped by the bar 51, as the pusher 49 lowers onto the cut profile of the cam 39 and the plunger 55 under the action of cup springs 56 presses on the screw 54. On this cycle, unclamping, loading-unloading, basing, clamping and transporting parts from position to position is completed.

21

es

Sostaintel E. Komarov

Editor I. RybchenkoTehred I. VeresCorrector L. Patay

Order 1992/15 Circulation 826 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moekeva, Ж-35, Raushsk nab., 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (3)

1. TURNING AND DIVISION TABLE by ed. St. No. 1177137, characterized in that, in order to increase reliability and reduce dimensions, it is equipped with clamping devices, a loading device and a magazine made in the form of two cylindrical shells installed coaxially with each other and the table face, and the loading device is made in the form located on the face plate with the possibility of radial movement of the slide connected by means of the second additional cam and gear inserted into the design, mounted coaxially to the faceplate, with the drive rail mechanism rotating the chuck, a clamping device is kinematically connected with a drive mechanism for the chuck locking. FIG. / SU, „, 1227422 2. Table by π. 1, characterized in that, in order to expand technological capabilities, it is equipped with two stops located on the gear, and a leash mounted on the second additional cam, while one of the stops and the leash are installed respectively with the ability to move along the surface of the gear and interact with the mentioned stops, and the gear - with the possibility of rotation about the axis of the specified cam. 3. Table by π. 1, characterized in that the inner shell of the store is made in the form of arched plates mounted with the possibility of radial movement.