SU567554A1 - Automatic multispindle lathe - Google Patents

Description

(54) MULTI-SPINDLE TURNING MACHINE

And FIG. one; in fig. 3 section bb fig; on f “g. 4 shows a section B-FIG. 2; in fig. 5 mechanisms of feeding, clamping and electro-blocking the presence of a bar in plss: bones, the latter mechanism being in the position when the bar is present; Fig. 6 shows the electro-blocking mechanism for the presence of a bar in the position when the bar was finished and the machine stopped after turning the spindle drum from the sixth position into the first; in fig. 7 - set and feed knobs, when the maximum feed is set on the machine, and the feed knob and the limiting one - the knuckle portion of the set formed a closed channel with parallel sides for the feed fork roller; in fig. 8 - the same, when adjusting the average feed, and the feed knuckle and the limiting part of the set's knuckle formed a downward channel {towards the end of the spindle drum) channel; in fig. 9 - the same, when the zero feed is adjusted, that is, the bar set was absent, and the feed knuckle does not affect the feed FORK roller; in fig. 10 - the same, with the maximum bar feed for the variant, when the dial of the dial does not have a restrictive section, and the feed cam is of the closed type, in FIG. 11 - the same, when the average feed is adjusted, and the inclined curved linear groove on the plate carrying the feed cuyuk ensures that the feed knob channel coincides with the section of the dialing dial; on fkg. 12 - the same, when configured, zero bar feed; Fig. 13 shows the mutual supply and clamping fists, as well as the emphasis of the material in the plane between the fifth and the first positions of the spindle | drum for six-pin automaton

On (| ig. 1 the left part is shown, for example, a six-spindle automatic machine. On the base 1 there is a fixed spindle unit 2 in which the spindle drum 3 is rotatably mounted, which carries the working spindles of the automatic machine. A arc-shaped bracket 4 is fixedly attached to the rear wall of the spindle unit 2 , on the inner surface of which the clamping fists are fastened, grooving the spindle drum, in an arc between the sixth and first positions in the zone of placement of the forks 5 and 5.

The frame also has a rear support 6 supporting the automaton guide tubes (not shown in the drawings) in it with a left ka aKpennetia guide bar 7, the other end of which is fixed in the spindle unit 2. The axle 7 has a regulating shaft; the direction is set to a d-shaped bracket 8, carrying

on itself is a knuckle of set 9, covering the spindle drum along the heel and the first positions in the area of placement of the feed forks 10. On the case of the bracket 8, there is a shtang rail 11, which is marked with a scale, attached to the left end of the other, indicating the feed amount. The right end of the rod-rail 11 is movably axially mounted in the housing of the bracket 4 and interacts with the pinion gear 12 having a turnkey shank 13 The rod-rail 11 holds the bracket 8 from turning and allows you to rearrange it along the guide rod 7 using the rack gears with subsequent fixation of the bracket with crackers with a screw 15- (Fig. 3),

The bracket 8 carries a fixedly mounted fork 16, which is hingedly connected through a pin 17 with an inclined curved groove 18, made at one end of the plate 19, which with its other end is pivotally mounted on the hollow axis of the power feed knob 20 attached to the slider 21 pressed by a rigid safety spring 22 to the shoulder of the fixed rod 23. The plate 19 bears the fixedly fixed arcuate feed fist 24,

In the spindle drum 3, for example, the working spindles of 25 va rolling bearings are mounted (Fig. 4). Each working spindle 25 is installed with the possibility of axial movement of the pipe in -. g: image 26, the first end of which is connected to the collet of the clamp 27, and the left end to the clamping sleeve 28, inside the pipe of the clamp 26 is installed with the possibility of axial movement, the supply pipe 29, its right end is connected to the collet of the DF, and the left the end bears the bearing 31 connected to the feed fork; 10 movably axially mounted on the hollow round guide rod 32 fixed in the spindle drum 3. Inside the guide 32 there is an adjustable spring 33 34 to hold the feed fork 10 in the foremost position. A fork 35 is mounted on the plug 10. The bar 36 is fed to the stop 37,

An axle-directionally movable axially mounted 32 axle 5 is connected, via a roller 38, with clamping cams 39 mounted on a fixed bracket 4. The plug 5 is fixed after the clamping cams exits the guide 32 by means of a pivotally mounted in the housing

A 10-nDfinpy HaniPHTioii pawl –11 pawl, which is a nchocyte and a coid, and a groove, Bi.mc is imprinted on the shtaig 32. From the rotation of the nonanvi 3,0 fork and the fork of the clamp 5, they are restrained by the direction bar 42 (figure 2). Shtaigns 32 and 42 are fixed in spindle drum 3 and are connected with a disk 43 (FIG. 4). The stop of the material 37 is fixed between the sixth and first positions so as not to interfere with the machining of the part in these positions, and has the shape of an annular sector.

The mechanism of blocking the presence of a bar (see Figs. 1, 2, 5, and 6) is mounted in the power feed knob 20. Inside the hollow axis of the knuckle 20, another axis 44 is rotatably aligned with it, at one end of which is a flag 45, located in the cutout of the cam in the zone of contact with the feed fork roller 35 lOj and a double-arm lever 46 is fixed at the other end. The latter arm is connected with the adjusting screw 48 by the adjusting screw 4SP with one arm final you a key block 50, mounted on the slider 21 using the strap 51.

FIG. 13 shows the sweep and the relative positioning of the feed fins and the ejector, as well as the material stop. The knuckle of set 9 has a set of set 52, a section of height 53 and a limiting area 54, set of fist 9. and supply fist 24 are given in the maximum feed position b, and the dotted line shows the position of the fists at zero flow. The power feed cam 2O is flat and not firmly fixed to either the hollow axis 55 ,. mounted in the slider 21. On the axis 55, the feed knob 24 is pivotably mounted, its working surface 56 is tangential to the axis 57 of the surface 57 of the power feed knob 2C which is concentric with the straight section 58, which is angled to the vertical plane, after which the floor, the axis 55 stops at the slider 21, for example with a screw. The magnitude of the angle d- is chosen experimentally. Surfaces 57 and 58 of power cam 20 cause the feed collet to slip along the bar by the amount of difference between the feed length and the length of the part when the bar is stopped by the abutment of the material and counteract the retraction of the bar by the clamp collet. The arcuate fists of the clamp 39 have a flat fist, hand-unclamped 59, swiveled

in the case of the bracket 4 on 1.х: and СЮ and fixed with the help of the latch 01 so that the profiles of the fists 39 and the fist 59 coincide. The manual unclamping fist 59 is located in the next position after the loading position (in the first) of the automatic machine and serves to unclench the rest of the bar, set the new bar and clamp it manually until the automatic device switches to automatic mode.

Figures 7 through 9 show the different positions of the feed knuckles for the variant when the feed knob 24 is of the open type that you have with the limiting portion 54 of the knob set 9 forms a closed channel for the feed fork roller 35 with parallel sides when the maximum bar feed is set (FIG. 7, either a channel widening to the turn, when the mean feed is adjusted (FIG. 8), or a zero feed; (FIG. 9).

FIG. 10 shows a variation when the cam of the dial 9 does not have a restriction portion 54, and the feed cam 24 is of a closed type and is set to the position for maximum bar feed.

FIG. 11 is shown as in FIG. 10 in the middle feed position, and in FIG. 12 - in the position of the n neck feed.

The closed channel in the feeding section is necessary in order to eliminate the possibility of the influence of the spring 34 and inertial forces at the initial feeding moment, which are able to tear off the feed fork roller 35 from the working surface 56 of the feed cam 24 at the initial feeding moment (at the beginning of the spindle drum rotation) and: move the bar forward that quickly, either to get strong; punch and rebound of the bar from the stop, or there will be no material stop yet, since the latter is placed approximately in the interval between. 2555 degrees of rotation of the drum to allow the central tools to work in the sixth and first positions. The limiting section 54 of the cam set 9 or the closed feed cam 24 (fig. 1 O - 12) prevents the reduced phenomena and sets the rod to the desired law of movement, and also gives the opportunity to rotate the spindle drum in the opposite direction in the adjustment mode, for which the fists 20, 39 and 59 are chamfering - catchers for feed forks and clamp

Multispindle lathe avtokuta works as follows.

After cutting off the finished part from the bar 36 in the sixth assembly, it is necessary to unclamp the collet 27, the supply of the bar to the stop

37 and bar clamp. These operations at the time of lioBopoTa of the spindle-separate drum at 60 (for a six-spindle automatic machine) and sixth after the first in the first, which is carried out immediately after the end of the segment.

The mechanisms of the machine, when set to the maximum feed rate (fig.1, 5, 7 in 1O). Together with the drum 3, the rollers of the clamp 5 and the feed ip forks mounted on the guides 32 to 42 are rotated and attached to each working spindle 25. At the initial moment of rotation of the roller 38, I interact with the clamp 39 on the mounting bracket 4 on the holder 39 (13). will mix to the right the unlocked in this position with the aid of the driver 41, interacting with the surface of the cams 39, the plug of the clamp 5 (fig. 4) and the collet of the clamp 27 is opened through the coupling aazhyma 28.

At this moment, the roller 35. the forks for giving 10 slides along the section of the wrist 53 knuckle of 9 n set before the end of the collet opening aajma meets the working surface

56 feed knob 24, which moves the bar 36 to the right up to the stop bar 36 through the feed collet 30 connected through the feed tube. 29. and the bearing 31. with the feed fork 10. The feed cam 24, together with the tension spring 34, overcomes little effort, since the bar is moved only

see you last utgoroy, ie overcome the strength of the friction, arising from the weight of the bar with the pipe pit. At this time, the roller 35 of the forward link 10 moves in a closed channel formed by the surface 56 of the feed cam 24. and the restrictive portion 54 of the cam of the dial 9 (Figs. 1, 5, 7 and 13), or alternatively in the feed cam of the closed feed (Fig. 1O). When you exit az specified) channel roller 35 is tangentially concentric: about axis 55

the surface 57 of the power feed knob 20 mated to the straight section 58, lasts a simple angle, cC to the vertical plane. At this moment, the bar 36 has already met with the stop 37, the collet of the nodacs 30 is slipping over the bar surface by the amount of the difference between the feed length and the length of the part, i.e. surface

57 and 58. power fist 20. overcome the forces of friction between the jaws of the feed collet and the bar surface. Surface angle 58 prevents the bar from being pulled in

36 collet clamp 27, as it tells him. moving .forward until the bar is clamped with the fist of the clamp 59 at the end of the rotation of the spindle drum. By adjusting the angle szl it is possible to achieve a minimum delay of the bar 36 from the material stop 37. The clamping section of the cam 59 and the section 58 of the cam 20 are slightly conducive to braking the spindle-mounted drum 3 in the rotation eix bucket, as the license 35 and 38, mounted in forks 5 and 10, experience a pick-up resistance in the rotation bucket.

Thus, at the moment of rotation of the three reel of the sixth drum: position IB, the bar 36 was first opened, and it was fed all the way down to 37 degrees. At this time, the roller 35 of the feed fork 10, which belongs to the rod, which was in the fifth area with a surface 52. The set 9 when moving from the fifth to the sixth position, moves the feed fork U to the left and, together with the curved pipe, the feed 29. and tsavgu 30, skolz schu on the surface of the bar 36 clamped at this moment, i.e. the bar is assembled and the spring 34 is stretched. Then, after cutting off the finished part from the bar, which came from the fifth to the sixth position, the spindle drum of the shaft turns to 60. At the same time, at the beginning of the rotation, the bar is unfolded with the help of cams 39 through the roller 38 of the clamp fork 5. At this time, the roller 35 of the feed fork 10 slides along a section 53 of the cam 9 and then meets the surface 56 of the feed cam 24 alternating rods 36 to the stop 37, which stops it, and the surfaces 57 and 58 of the power knuckle 2O slip the feed collet 30 along the surface of the bar 36 and in the turning crown, the gripping section of the cam 59 produces a clamp of the bar extended by the amount determined by the stop: 37. At this time roller 35 forks n Cottages 10, which was in the first position / leaves the gadget's action area to the second position and is held in the forward position by the spring 34 and the friction forces between the feed collet jaws and the bar (or only the spring 34 if the bar is used up) and the clamp fork roller 38 5 also moves away from the action of the fist of the manual clamp 59 and the plug 5 is held in the rear (closed) position by the spring-loaded dog 41, which no longer interacts with the inner surface of the fist 59 and drops into the groove formed on the surface of the guide 32 (FIG. four).

At this time, a bar is collected when the roller 35 moves from the fifth position to the sixth position. The described processes are repeated with each turn of the spindle bar, i.e. with each ickle machine. Thus, the cam of dial 9 determines the extreme rear position of the feed collet, which can be changed and the power feed cam 20, its foremost extreme position, which is constant. The change in the feed amount is made by swapping the knuckle of the set 9 together with the bracket 8 along the axis of the spindle drum 3 along the guide {rod 7. In the case of the curtain), set the zero flow, i.e. turn off the mechanism; feed, you need to move the dial of the dial 9 to the maximum right marks O on the fake bar 11. In this case, the impact of dial 9 and feed 24 and 20 on roller 35 is eliminated and during rotation of the feed fork 10 will remain in the forward position held by the rod) § 34 (Fig. 9 and 12) . The control of the presence of the bar occurs at the end of the drum rotation, when the roller 35 comes out on the surfaces 57 and 58 of the cam 20 and encounters a ball 45 fixed on the axis 44. In this case, if the rod of the feed collet is present, it slips over the surface of the bar 36 a moment of emphasis 37 with considerable force that rotates the mandrel 45 together with the axis 44 flush with the working surface of the cam 20, while the double-arm lever 46 rotates, overcoming the force of the spring 48 adjusted by the screw 47 and presses the end switch 5O, giving a command to continue the nickle (Fig. 5), a command is given to continue the cycle even if the remainder of the bar is fed by the end of the collet and stopped by the abutment 37 when the roller 35 meets the M-t. NIKOM 45, as this causes considerable effort due to the collet end face and 37 stop. If the collet paws jumped off the surface of the bar residue at the very end of the set, or the set was significantly longer than the part, then when the rest is fed, the collet ends do not thrust at the moment of the wind of the roller 35 with a tambourine 45, and therefore, earlier, somewhere on the surface 56 of the feed cam 24. At the same time, the roller 35, impacting the surface 56, due to the horizontal component of its force, will displace the cam 20 dare to crawl om 21 to the left, compressing the safety spring 22 will turn about the axis 55 and the plate 19 will shift relative to its finger 17 along the groove 18, presses the pendulum 45 and takes its usual position at the end of the drum rotation through-ga. By compressing the spring 22, the machine is prevented from breaking, and by turning the tang 45 is provided. revision of the remainder of the rod, which would have been thrown away by the adjuster, if the control had been carried out while recruiting, since the machine would have stopped in the previous cycle. When a part is made from the indicated residue, which will be cut off in the sixth position, and it will again be found during the turn, but it will be so short that it does not meet with the stop 37 even at the moment of the meeting of the roller 35 with the toe 45, the letter 45 The spring held by the spring 48, the force of which is greater than the force applied by the feed fork roller 35 connected to the empty supply pipe, will not turn the axis 44 and will not press the limit switch 50 closing the drive electric circuit and the machine will stop (Fig. 6). Thus, due to the control of the presence of the bar at the feed, the remainder of the bar residue is completely refined, since the machine will stop only when the remainder is; so short that it does not meet with the material's iron even when it is fed by the end of the collet, i.e. shorter than the workpiece. This contributes to the economy of the bar material, especially in cases where long parts are machined. This is facilitated by the fact that the new bar is refilled not in the sixth, position where the segment is produced, but in the next one, i.e. in the first przitsvy. In the described construction, the manual unclamping fist 59 is in the first position in the housing of the bracket 4 on the axis 60 and fixed with the latch 61. After stopping the machine in the first position in connection with the use of the bar, unlock the fist 5.9 with the latch 61 and turn the axis 60 and the key fixed on it The cam 59 is clockwise (FIG. 13). In this case, the clip 38 of the fork of the clip 5, which interacts in this position with the cam 59, will move it to the right and open the collet zazhkma 27 (figure 4), which makes it possible to remove the rest of the bar i in shshdel vy bar. Since the emphasis of the material 37, which is located between the sixth and first positions, is very close to the bar (does not reach the axis of the first position by a few degrees), it can serve as a guide to extend the new bar to the size of the workpiece plus the black trimming allowance the end face in the following potentials is a cutting tool, metal saving is effected in this way, the cutter is retained by the cut, and the loss of one cycle of the automaton is prevented, i.e. increases its performance.

Claims (1)

Invention Formula 1. A multi-spindle automatic lathe containing a manual clamp-ramming mechanism, a rotary spindle drum, carrying on itself each of the spindle clips n feed clamps attached to each spindle, which are capable of rotating the spindle of the 1 st drum with fixed motion knuckles attached to the machine body as well as with the control mechanism of the presence of the rod, characterized in that, in order to improve the performance of the machine, the feed pushes are designed as a set of interconnected elements — an arched cam of the rod set and supported on the arcuate bracket ustanovleviym in turn with voamozh- NOSTA movement along a machine axis, the arcuate first knuckle and a second knuckle feed supply having a concentric axis relative to a cylindrical work surface, mating with mot prospect a linear surface, the first kula being mounted on a plate pivotally connected by one condom to the bracket, and the other to the semi-inserted into the machine through the BTopoiX axis of the feed knob; in addition, the working face of the first feed knob is directed tangentially to the cylindrical surface of the second knuckle filing, 12. The automatic machine according to p. 1, otlichayug. Sch and with the fact that in the feed knuckle a notch is made, in which an attendant mechanism of electrical blocking of the bar is placed, and the axis of the second knuckle is hollow and there is a second axle in it, one end of which is connected to the lock mechanism and the other the end through two shoulders i the lever ag - with the end switch. 3. The multi-spindle automatic lathe according to claim 1, characterized in that the clamp keys and their bracket are arcuate, and the fist of the manual clamp-unclamp rod is located in the position following the cut position.  Sources of information taken into account with experts: 1. Multi-spindle, automaton of an English company: 6 $ A-The BSA Toob b-ivisto-n zoir-pae V. 4, p, 16, jiJtie, i960. 38 f 7 VU2.2 5 20 95 12 35 9 8 32 3 ttO 1 38 39 4 11 V 22 Zff 8 51 50 9 6 tth 45 47 27 2J 15 9ш. five 567554 BB 27 36 37 2 th 3 L / 7 16 52 G9 four LH needles LO Vui.S WIG ig. W needles Rig. P 38 39  59 6} J7 Vuz. / J