DE1652009A1 - Laepp machine with automatic loading and unloading device - Google Patents

Description

The invention relates to methods and apparatus for loading and unloading workpiece holding rings on surface finishing machines of the kind used in the

United States Reissue Patent No. Re. 23937 for

Earl I. Bullard for a lapping machine are disclosed.

It is currently a lapping machine on the market

to have to lap flat objects that are circular Lapping disc used. The lapping disc becomes permanent

and automatically conditioned by relatively heavy rings, which rest on the lapping surface and the additional Puncture the holding of workpieces on a special

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carry out their station of the machine, whereby the factory

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Pieces are placed in the rings for this purpose. · Three or more such rings can be used simultaneously, creating three or more work stations on a single one Lapping disc are formed. The quick material removal is reached by a disk-shaped weight or a pressure plate is placed in the rage and on top of the objects that will be lapped.

To load a lapping machine, as described previously, or to be discharged, the Mascuine must be stopped, raised the pressure plate and the ring of the lapping disc ,, and the articles are then removed from the Läppscneibe sowonl v ± e of the pressure plate to which they can adhere when the plate is raised * if new pieces to be lapped are then placed on the lapping disc in the area defined by the ring, and the ring and pressure plate are lowered to surround the work pieces and ° to press on it. It can be seen that in a lapping machine of the type described above, machining time is lost while the machine is being loaded and unloaded, since these functions are performed while the machine is stationary;

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Furthermore, the loading and unloading is generally of Hand executed what requires supervision is present to unload and then to load them again with parts to be lapped.

j3s is a purpose of the invention to provide a method for automatic loading and unloading of an annular workpiece holder on a Läppsxieibe or the like. With a. Minimum of Lias chine ns tillstand and handicraft to create.

A special purpose of the invention is creation a method of loading and unloading a plurality of workpiece holding rings of a lapping machine from a single one Station off, with a device to switch all rings of the Mascnine periodically to them successively to be brought to the only station mentioned.

Another particular purpose of the invention is to provide a method of loading the rings of a Lapping machine in which the parts to be lapped are placed on a table outside the lapping disc and the is arranged to occupy a space that the. same in size and outline as one in one

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Ring is and then the parts so arranged into the interior of the ring.

Another purpose of the invention is to create

of devices for the automatic removal of objects from a workpiece holding ring and the replacement of the removed objects with objects to be lapped.

| f. Still another purpose of the invention is to provide

- of devices for the automatic removal of lapped objects between a lapping disc and a pressure disc and inserting objects to be lapped between them.

The invention provides devices for loading

of a circular space with a plurality of im W

essentially identical workpieces that have a flat Have surface which is to be lapped, the devices having a conveyor track which has a plurality of said workpieces thereon with their flat surfaces evenly oriented with respect to the web are, a plate near the track, which plate is a has circular opening therein which has a circular shape

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space is limited and suitable for a plurality. from oriented workpieces, furthermore a rotary table concentric with the circular opening, which the Can carry a plurality of oriented workpieces in the circular opening, a device for .Turning the turntable and means to transfer the workpieces from the track to the circular opening while the turntable turns.

The present disclosure also provides "devices" for loading a circular space on a circular lapping wheel, a plurality of substantially identical workpieces having a flat surface to be lapped, the devices including a ring which can rest on the lapping wheel and which delimits a circular workpiece receiving space on the lapping disk, furthermore a disk-shaped pressure plate which is loosely arranged in the ring and can rest on the workpieces in the ring, further a vertically arranged pressure plate guide, a device at the lower end of the guide, which the pressure plate on the guide to

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Rotation on it is superimposed on the annular lapping disc arranged fixed frame, a vertically arranged, rotatably mounted on the frame in concentric relationship with the annular disc, a horizontal shaft at the lower end of the? / elle attached guide, a crosshead in the horizontal guide and slidable in it means which secure the printing plate guide in the crosshead for movement therewith and. one Device on the frame that interacts with the crosshead, in order to prevent the movement of the crosshead in its horizontal guidance, except in a predetermined one Angular position of the horizontal guide with respect to the frame.

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These and other purposes of the invention go more clearly from the following detailed description of a preferred form of the invention by way of example with reference to the drawings, in which FIG. 1 is an enlarged end view in quarter section of a typical part to be lapped,

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Fig »2 a top view of a three-ring flak lapping machine, to which the invention is applied,

Fig. 3 is a front elevational view of the upper part of the - - ^ '' machine of Figure 1.

Figure 4 is a side elevational view of the upper portion of Figure 4 Machine according to Fig. 1,

Fig. 5 is an enlarged partial side elevational view in the melinitt of the machine according to FIG. 1 along line 5-5 in Fig. 3, which shows a work stage,

Fig. 6 is a view similar to Fig. 5 showing the machine shows in another stage of their activity,

Fig. 7 is a schematic front elevational view in section; which shows the machine still in another work stage, this view according to Line 7-7 in Fig. 1 runs,

Fig. 8 is a schematic front elevational view in section; similar to FIG. 7, which shows the machine according to FIG. 1 in a further working stage,

9 is a plan view, on an enlarged scale, of a the slide used in the loading operation,

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Fig. 10 is an enlarged partial side elevational view

»Of the slide according to FIG. 9 in the direction of the arrows 10-10 seen in Fig. 9 »

Fig. 11 is a side elevation view in section and in one enlarged scale of the switching device for the Machine of Fig. 2, in which. Direction of arrows "11-11 seen in Fig. 2,

12 is an enlarged plan view in section of the switching device according to line 12-12 in Fig. 11,

FIG. 15 is a rear elevational view of certain of FIG Machine used limit switch according to line 13-13 in Fig. 11,.

Figure 14 is a plan view of part of the article conveyor and

Figure 15 is a schematic diagram showing the hydraulic and electrical circuits and the controls therefor.

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The device according to the invention includes a flat, circular, rotatable lapping disc on which a plurality of work stations are arranged is, with a device to periodically rotate the stations over an angle of such Size to rotate that the stations are successively brought to a platform on the side of the Lapping disc is arranged. Each station is through one big heavy ring intended who-not just who to lapping parts, but also continuously conditioned the lapping disc. The parts to be lapped will be held back in the hanging and countered by a pressure plate the lapping disc held, the plate being pivotally mounted on a rotatable arm which forms part of the Switching device forms. The ring and its contents are pushed off the lapping disc and onto the platform where the ring remains during the unload and load operation. The elevator pulley is lowered onto a base plate which calibrate a slide that completes the ten parts from the disc and parts to be lapped onto the

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Disc pushes. The latter will then go up with lifted up the ring and the ring and parts are pushed back onto the lapping disc. The switching device then rotates the freshly loaded ring away from the loading and unloading station and brings an adjacent ring to the station to unload it. Although the devices and the method according to the

Invention for use on a wide variety of workpieces are suitable, they are made from found with reference to workpieces in the form of sealing rings, as described in 'rotating mechanical Seals are used. These rings are relatively small, on the order of one inch to

5.8 cm in diameter and have a narrow, raised area Surface that must be lapped flat and smooth. Such a typical sealing ring is shown in Fig. 1; and can be a plastic, metal or ceramic ring. which has a surface 10 that is lapped flat and smooth must be · He can have a flange 11, which is more or less centrally spaced between its ends

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can be and its ends can be of unequal diameter be.

The lapping machine Q? Ig. · 2, 5) can be circular Have lapping plate 12 rotatable about a vertical axis and provided with a flat top work surface 13 is where loosely abrasive and lapping beams are in in any suitable well known manner. The rings to be lapped 14 are set in a wear ring 15, which acts as a workpiece holder and also as a Läpps before ib enkondit ionier he serves, as in that. mentioned Bullard Reissue Patent for "Re 23937 is described · As shown more clearly in Figure 5, the ring 15 surrounds the rings 14 and holds them against the circular working surface 13 of the lapping disc 12. The wear ring 15 is in turn held on the lapping disc by a loosely fitting, disc-shaped pressure plate 16, which is in the ring is inserted and rests on the upper ends of the rings 14, around rings or discs of uniform thickness and perfection to sniff. The pressure plate 16 is rotatable

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at the - end of a vertical guide rod 17 »see the extends upward into a crosshead 18 which is slidably mounted in a horizontal guide 19, which forms the switching part of the upper structure 20 of the lapping machine. '*

The guide rod 17 can be rectangular in cross section and pass through a suitable opening 21 in the crosshead. A vertical slot 22 is formed in the guide rod 17 and a horizontally arranged Aufnähmest ange 23 goes through crosshead 18 and slot 22 therethrough, with the receptacle extending horizontally outwardly beyond each end of the crosshead 18 extends. The right end of the Aufnähmest is 23, as FIG. 5 shows, screwed into the crosshead 18 and a locking nut 24 serves to secure the rod 23 in position relative to the crosshead 18. That left end of the rod 23 is, as Fig. 5 shows, provided with a pigtail 25 and at the right end of said The rod is a ring 26 by any suitable means attached, which has a larger diameter than the rod 23 and in diameter is the diameter of the head 25

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is equivalent to/· -

How clearer in! Ig. 2, the guide 19 fixed in the selected machine to explain the invention is one of three identical guides spaced 120 ° apart, the other guides being shown at 27 and 28. Each of the guides is welded to a drum 29 (FIG. 3) in suitable openings formed therein for the guides, the drum being closed at its lower end, as FIG. 5 shows, by a pair of concentric disk-like plates 30 and 31 with the inner plate 31 centered on a pin 32 which extends under the end 33 of a vertical shaft 34-. The inner plate 31 is secured to the lower end 33 of the shaft 54 by screws or other suitable fastening means so as to be securely seated thereon and to be rotatable therewith. The shaft 34 is held in roller bearings 35. 0? Ig # 11) which are mounted against vertical movement in a vertically arranged multi-element stand 36 which forms part of the stationary frame of the machine. ,

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- The lower end of the stand 36 has a circumferential groove 37 »which is formed in a stepped part of the same, with the hat partially through, a pair of rings 38, 39 is closed, which is axially around. a distance apart 'that are just a little larger than the diameter of the

Receiving rod 23 is to form a slot through which the rod extends and in which the rod can rotate around the stand 36. In just one position, however, the rings 38 and 39 are enlarged to "form an opening 40 just large enough to allow the head 25 of the rod 23 to pass radially outwardly. In all other positions the head 35. by the rings 38, 39 and the bottom of the hat 37 against radial movement restrained relative to the stator 36th Bs is intended that the shaft pieces 34 through 120 ° three times during the Läppayklus for the tool 'which are lapped , is rotated so that each of the guides 19, 27 and 28 successively assumes the position shown by the guide 19 in FIG

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This position is one from which the wear ring and its contents, from the lapping disc 13 and to a Adjacent device are pushed off, where the finished parts are removed from the wear ring and parts to be lapped are inserted therein. It is in this position where the opening 40 is formed.

The machine is "with a lower part 41 (Fig * 4) provided, welciies the drive mechanism, not shown for the lapping plate 12 and with a stand 42, the lapping composition used during the lapping process contains. Adjacent to the lower part 41 and attached to it is a table 43, one of which is located Console 44 extends to a pair of relatively lightweight stands 43, 46 to carry (Fig. 3) · A bridge 47 is attached to the top of the stands 42 and extends ■ to the right, as shown in Fig. 4, against the stand 45, 46 'Welding parts, which are designated as a whole with the reference numeral 48, are fastened to the base of the bridge 47 which extend outward to the right, like Fig. 4 shows, above the uprights 45, 46 and are

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suitably welded to the tips of the same or otherwise attached.

The weldments 48 include (Fig. 5) spaced vertical transverse plates 49, 50, 51 and 52, a bottom plate 53 and side plates 54 and 55 (Fig. 7), all of which are suitably welded together; are.

||: At the bottom of the base plate 53 spaced parallel guide rods 56 and 57 are welded, of which the adjacent surfaces are formed with grooves 58, 59 in which the crosshead 18 is received for sliding movement therein. As clearly shown in Fig. 7, the crosshead 18 has a circular cross-section and.

. the grooves 58 and 59 are contoured accordingly to the To allow the crosshead to slide easily into the grooves as a self-adjusting feature during unloading and Loading a wear ring to rotate. The transverse plates 49 and 50 (Fig. 5) and the bottom plate 53 have slots 60, 61 and 62 respectively formed therein to allow the upper part of the guide rod 17 to be used during loading and go through charge cycles of the device.

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Bine plate 6J5 (FIG. 5) is mounted over the ends of the guide rod 56, 57 and serves to carry a hydraulic cylinder 64 which passes between the uprights 45> 46 and its axis arranged in parallel 'with the guide rods 56, ^ l and is concentric with the crosshead 18. The plate 63 has an opening 65 therein through which the piston rod 66 of the cylinder 64 extends for reciprocation therethrough. The left end of the rod 66 is, as shown in Fig., Attached to an adapter 67, which has the same cross-section as the crosshead 18 and rods 56, ^ 7 in the grooves 58, 59 in the guide. This adapter 67 is held against rotation by a web 68 which is fastened to the base of the adapter and extends downward between the guide rods 56, 57. The web ends in a downwardly extending flange 69 to which an adjustable switch contact tip is attached. The left side of the adapter 67 has, as Fig. 6 shows, a horizontal slot 71 formed therein,

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the one at the left end of reduced width (Fig. 6) is. The width of the slot 71 is sufficient at its inner end to accommodate the disk 26 of the Aufnähmest and is straight at its linear lower end 72 sufficient to accommodate the receptacle st ange 23 so that this end of the adapter 67 acts as a claw to fc to grasp the disk 26 and to cause the crosshead 18 to to move with the adapter 67.

With reference to FIGS. 3, 4- and 7, the Table 43 includes a cast part 73, which is about in elevation L-shaped and attached on its side 74 to the lower part 41. The casting 73 & at a right angle Base plate 75 'attached to the top of the same

is, this base plate, as shown in Fig. 7, three openings 76, 77 and 78 has therein. A slide 79 is arranged on the base plate 73 so that it can be snapped into place, the outer contour of which is also rectangular, but which has only two openings (FIG. 9) 80 and 81 in it. This public

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openings are provided through a slot 190 for a useful purpose to be described. The slide 79 can be moved back and forth from a position in which the opening 80 is concentric with the opening 7S in the base plate 75 and the opening 81 is at the same time concentric with the opening 77 in the base plate 75 into a position, in which the opening 80 is concentric with the opening 77 and the opening 81 is concentric with the opening 78 in the base plate 75.

The device for moving the Slide 79 between its aforementioned positions includes a pair of spaced apart brackets 82 and 83, which are located on the side of the slide 79 are screwed from the lapping disc 13 and the appropriate openings therein through which a guide or support rod 84 passes. This guide rod will in turn supported by consoles 85 and 86 (ITig * 2 and 3), which are similarly attached to the base plate 75 are attached. The opposite side of the slider is by a guide bar 87 on the base plate 75

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guided. Am hydraulic cylinder 88 of somebody known construction is mounted under the I guide rod 84 and in this position by brackets 89 and 90 (Fig. 3) with the axis of the cylinder parallel to the axis of the guide rod 84. That effective end of the cylinder 88 is attached to an extension 91 (Fig. 10) on the bracket 82, so that when the cylinder is operative, the console 82 reciprocates in a horizontal direction and its movement through the guide rod is guided in '84.

As can be seen from FIGS. 4 to 7, it is located directly above the opening 77 in the base plate

a 'platform 92 which has the shape of a plate which ί . - * '- ■

at one end 93 by an adjustable shoulder screw 94 is attached to a lug 95, which see of the Casting 73 extends from as well as adjustable by similar Shoulder screws 96, 97 (£ ig · 2) ar the side of the Platform 92 adjacent to the lapping disc 13 corresponding approaches 98 on the lower part 41. This adjustable miter hoods 94, 96 and 97 carry the plate

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form 92 on the shoulders of these screws and the height the platform relative to the surface of the lapping disc 1j5 can be regulated by turning the screws in their lugs to raise or lower the screw shoulders on which the platform is supported. After this When a suitable position for the platform is reached, the threaded upper ends of the adjustment screws become locked against rotation by nuts 99 which lock against the platform 92.

A rectangular notch 194 is cut in the platform between adjustment screws 96 and 97 and the adjacent lap plate 12 to accommodate a height control plate 100 (Figs. 2, 3 and 6) which is substantially the same rectangular shape except that the side 101 of the plate 100 is formed adjacent to the lapping plate 12 so that they mate closely with the circular edge of said lapping plate. the height o stetieiplatte 100 is hinged to the platform 92 at 102

ί ^ stored. A cylinder 1031 of the under the elevator control plate

*** 100 arranged and with her by an articulated connection

_f is connected, the plate 100 about the pivot 102

pivot so that in one position the contoured edge of the plate raised above the lapping surface 13 and in the other position below the lapping surface 13 is lowered · It is intended that the height control plate 100 in their elevated position relative to the lapping surface is when objects are to be pushed from the platform 92 onto the P lapping surface 13, and below the lapping surface 13 is lowered when items are removed from the lapping surface 13 and onto the platform 92 should be pushed. This arrangement avoids that the lapped objects either the height control plate or the Lapp plate in its movement from one to the other another strip.

The platform 92, as shown in FIGS. 5-6 and 7, has a circular opening 195 "in diameter is slightly larger than the inner diameter of a wear ring 15 and therefore larger than the diameter of the pressure plate 16. Arranged concentrically with Referring to the opening 195 is a disc-shaped elevator plate 105 which has a flat top surface 106,

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whereby the diameter of the slevator plate 105 "is slightly smaller ' than the diameter of opening 195 in platform 92 is, so that the elevator plate 105 can be inserted into this opening, with its upper surface 106 with the upper surface of platform 92 is coplanar. To this Way, the wear ring 15 and its contents $ of the lapping surface 13 over the honing plate 100

and the disc-shaped elevator plate 105 in one position slide in which the ring rests on the platform 92, its axis with the axis of the Sleva.'torplatte 105 coincides. In this position all lapped parts rest on the elevator plate 105-

The axis of the elevator plate 105 coincides with the center of the opening 77 in the base plate 75, so that the plate 105 can be lowered into the opening 77. When so lowered, its top surface is coplanar with the top surface of the base plate 73 'so that the objects to be lapped or those that have been lapped can slide laterally off the top surface 106 of the elevator plate 105 and onto the base plate 75,

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to load or unload the wear ring 1 5. The raising and lowering of the elevator pulley 105 is effected by a rod 107 (Fig. 7) suitably supported in a guide 108 which is attached to the casting 73. A hydraulic 2ftrlinder 181 of known construction can be made by the

P casting 73 in coaxial relationship with rod 107

attached and connected to the lower end of the same be to thereby the rod and the carried thereby Elevator plate 105 to raise and lower. "

The mounting of objects to be lapped on the surface 106 of the elevator plate 105 and the removal of lapped objects from this surface is carried out by the aforementioned pusher 79 (Pig. 7). If the opening 81 in the pusher 79 is concentric with the elevator plate 105, the other opening 80 in the pusher 79 is concentric with a turntable 110 which is arranged in the opening ^ O of the base plate 75> and which has an upper surface 111 , which is the same height as the upper surface of the GrHimlplatte 75 · -thick turntable 110

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Is attached to a shaft 113 extending from an engine 114 · that extends upwards at the bottom of a Mounting plate 115 is attached in a suitable manner is attached to the casting 73 (Figs. 4 · and 10), the Mounting plate 115 has an opening through which the shaft 113 extends.

The opening 80 of the slide 79 contains the full cavity of the device in which the to be lapped. Objects are placed in a predetermined order, direction and number. As more clearly shown in Fig. 2, the objects to be lapped in the example shown, rings of the genus shown in Fig. 1 are indiscriminately dumped into a vibrating conveyor mechanism shown partially at 116. This vibrator can be of the well-known ^M Syntron "-5" type and by a suitable arrangement of track, feeler fingers or the like , which are arranged around the circumference of the same

- * the rings or discs are directed progressively, with the ο

fc> surface 10 of the same to be lapped o unfcersfc lies and whereby they are caused by.

^ω gravity pulling down an inclined slide 117- -26-

th, which ends at the side of a star wheel 118, so that this star wheel normally blocks the exit of the rings from the chute 117. This star wheel 118 has curved Notches 119 »120 formed in the sides thereof, the largest radial dimension of which is just sufficient, one ring to be lapped in “to be included. This star wheel is attached to a shaft 121 (Fig. 7) with a Motor 122 is connected and driven by it, which is arranged and fixed under the mounting plate 115. The motor 122 is intended to rotate the star wheel 118, as shown in FIG. 2, in the clockwise direction. The motor is on the other hand intended to rotate the turntable 110, as shown in FIG. 2, counterclockwise. The star wheel 118 is mounted on top and overlaps the turntable 110 impure amount that is im. essential is equal to the greatest radial depth e of the curved notch 119, so that when the star wheel 118 is rotated, same brings rings over turntable 110 and the ring falls down onto the turntable. The rotation of the Turntable 110 carries the dropped ring around

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to get from below the revolving star wheel 118 »

The construction of the star wheel 118 and the adjacent construction is shown more clearly in FIG. 14. It should be noted that the star wheel 118 rotates in a housing which is in the form of a substantially flat disc which rests on the base plate 75 and thereon is attached. The housing 133 is set on the plate 75 to cover the turntable 110 and is cut out at 13 ^ to remove the otherwise overhanging portion thereof. The housing 133 is provided with a vertical retaining flange 135 which serves to hold a ring or disc in the rotating star wheel 118 until the ring passes over the turntable 110 where it leaves the housing 133 and falls onto the turntable. The flange 135 is interrupted at 136 to allow the exit end of the conveyor chute (Fig. 2) from which the rings or circular objects to be lapped enter the star wheel * ώχηβ krsisför.ni ^ e path 137

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is in the housing 133 as a hat adjacent to the Retaining flange 135 is formed along which the rings are pushed through the star wheel.

The exit end of the web 137 has a trailing edge downwardly sloping portion 138 which moves the ring about one half of the elevation of track 137 above the surface of the turntable 110 lowers, the ring is moved along a downwardly sloping portion 139 for the remainder of the way (Figs. 9 and 10) of the slide 79 dropped, the

i -

is inserted between the housing and the turntable 110. The gradual lowering of the ring from track 137 the surface 111 of the turntable 110 avoids excessive object bumping and possible rotation of the ring when it leaves the star wheel and onto the turntable entry. =

To ensure that there is free space on the Turntable 110 is available when a ring is transferred from track 137 to the turntable - is a deflector in lorm a curved plate that extends vertically from the surface 111 of the turntable 110 extends

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a block 141 attached to the base plate 75. As in B ¹ Ig. 14 x shown, the deflector plate 140 is disposed at an angle to a radius of the turntable 110 so that any rings traveling with the turntable 110 on the circumference thereof will hit the deflector plate and be caused to

to move radially inward from the turntable, creating a free space on the other side of the Leaving deflector at the exit end of the path 137, in which a ring to be transferred to the turntable 110 can fall.

It is intended that a predetermined Number of objects, e.g. B. that in Pig. 1, conveyed by the star wheel 118 on the turntable and that as soon as the predetermined number so has been fed, the star wheel and turntable stop rotating and remain stationary until the Rings on the turntable 110 have been moved by the slide 79 and the slide is in its loading * position has returned.

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A parts counter 142 (Fig. 7) is provided for this purpose, which parts counter can be of known construction and therefore not described in detail here will. This counter is provided with a roller operated switch arm 143 which is located on the surface of the Star wheel 118 runs over the track ^ 37, so that every time when a ring passes under the roll, an electric circuit by a switching mechanism, e.g. B. one not shown Step switch, which is made in the circuit to the motors 122 and 114 is switched on. When the step switch has a predetermined position accordingly has reached the number of rings desired on turntable 110, the circuit is applied to motors 122 and 114 interrupted and the motors stop working. A console 144, -the at the top of the base plate 75 is attached, is provided on which the counter 142 can be mounted.

The means, soak the .guides 19, 27, 28 for the wear rings periodically over 120 ° rotates and accurately with respect to cylinder 64 and its

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Adapter 67 are switched, are more in detail shown in Figs.

The shaft 34 on which the guides 19 »27 and 28 are attached, extends upward into a housing 14-5, which is preferably made of weldments is and on an 'upper structure or bridge is worn in the manner shown in FIG. To the The top of the "7elle 3 * 4" is a driven gear

146 wedged, which can mesh with a drive pinion 147, aas slidably wedged on a vertically arranged V / Elle 148. In the illustrated example, has the gear 14o twice the number of teeth 'ν ·: ie the driving pinion 147' Bie ".Velle 148 is in turn connected to the Ausga; igswelle 149 of a hydraulic cylinder 1P0 of Jrehtype keyed, which suitably" / else attached to the opitze de ^ Jenäuses 145.

It is intended that the cylinder I.50 produces an oscillating volume in the shaft 149 and in its associated shaft 148 and thereby the gearwheel

147 an oscillating order issued. It will, however

geviünsexit that uos driven teeth? ad 146 which the

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Shaft 34 drives, rotates in only one direction and therefore means are provided to separate the gear 147 from the gear 146 during the return movement of the oscillation of the shaft 148., as well as the subsequent re-engagement of the gear 147 with the gear 146 in the Oscillating Driving Direction of Gear 147 · The disconnecting or releasing mechanism is provided on a plate 151 having an opening 152 ^v therein for receiving the hub 153 of the gear 147. The plate 151 has a notch 198 on its right jilnae to receive the neck portion 19 & a reciprocating rod 197 which is connected to be driven by a hydraulic cylinder 154- 'that at the top of the housing 145 is attached near the hydraulic rotary cylinder 150 ". A retainer 155, which has a notch 156 in it to receive the small segment of the gear 147 therein, is also attached to the neck portion 196 of the rod 197 held back.

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so that when this rod 197 is oscillated vertically, the gear 147 is inhibited from moving therewith. This gear 147 slides vertically on the ^ eIIe 148, to which it is slidably wedged by a wedge 157. It is intended that the gear 1.47 by the Shaft 153 is raised enough to separate it from gear 146 and while it is raised therein Position, it is rotated in a reverse direction by the cylinder 150 through 240 °, whereupon it re-engages gear 146 for forward movement can be lowered over the same 240 °. Since the pinion 147 'has half the number of teeth of the Has wheel 146, the latter is rotated through 120 ° and its fixed guides 19, 27, 28 become more similar Way turned over 120 °.

However, it is necessary that the guides 19, 27, 28 remain precisely adjusted during the Drive gear 147 is separate from gear 146, and oscillates backwards over 240 °. To hold

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to secure each guide in their exact location, is an intermediate barrier between the plate 151 and the frame of the machine and a second intermediate lock provided between the gear 146 and the plate 151 so that that in effect the gear 146 on the. frame

of the machine during the return movement of the drive. Gear 147 is locked. ...... ,

The aforesaid intermediate lock consists of a rack 158 suitably quietly attached to a top plate 159 which forms part of the bridge 20, the rack 158 having teeth 160 which mate with corresponding teeth 161 at the adjacent end of the plate 151 mesh, three teeth on plate 151 being sufficient for this purpose. The thickness of the plate 151 is greater than the axial width of the teeth on the driven gear 146, so that when the * plate 151 with the drive gear 147 is raised, the teeth on the plate 151 engage the teeth of the gear while at the same time the Teeth 160 on the

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Rack 158 is engaged "80 is while the gear is completely out of contact with the gear 146 /, the latter rigidly held against rotation by its interlocking with the teeth on the plate 15I and the interlocking of the teeth on the plate 15I with the teeth 160 on the rack 1J? 8 «During the rotation of the toothed wheel 147, the toothed wheel 146 is therefore held against rotation and cannot move until the plate 15I is lowered from engagement with the teeth on the toothed wheel 146 and the toothed wheel 14? is again adjusted to mesh with gear 146.

The work of the various cylinders is controlled by solenoid operated valves, the Solenoids in turn · shaped by electrical switches are controlled by Greizungssciialtem, which by the to be controlled devices are operated. In the babble the oscillating. ', VeIIe. 148 are effective attacks, however provided at each end of the oscillation to allow precise switching of the fixed guides 19 »27 and 28 to ensure. These fixed stops

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are in Pig. 12 and consist of blocks 162, 163, attached to the plate 151 and with arms 164, are provided, which extend upwardly and radially inwardly over the drive gear 147. Adjustable stop screws 166, 167 are mounted in arms 164, 165 and can be accessed by pin 168 which extends vertically upwards and is dowelled into the upper surface of the gear 147 In this way, when the gear 147 oscillates between its two positions, it takes the pin 168 with and this ctif t definitely limits the oscillation when the stops 166 and 167 are hit. Movement of the gear in any direction, thereby limiting the movement of the driven gear 146. Because the gear 146 is keyed to the shaft 34, controls.die Control of the movement of the gear 146 the movement and of course the position of the guides 19 » 271 28.

-37-109837 / 0293

The limit switches for the oscillatable cylinder 150 are arranged above this cylinder and are attached to a plate 169 arranged thereon. The shaft 149 of the cylinder 1j? 0 extends over the plate 169 and has attached thereto an arm 170 (Fig. 2) with a pair of axially (vertically) spaced adjustable contact screws at the end thereof. A switch I7I controls the limitation of the return movement of the cylinder 150 and a switch controls the drive movement of the cylinder I50 and therefore the point at which the drive for the switching movement of the guides 19 »27 and 28 ends. The switches 171 and 172 are arranged at different heights so that the separately adjustable contact screws on the arm 170 can operate their respective switches.

The limit switches for controlling the solenoid- operated hydraulic y-valve for the cylinder

which raises and lowers gear 147 are in 13 shown. They are attached to a console 173, those at the top of the housing 145 and is attached immediately adjacent to the cylinder 154. The limit switches are shown at 174, 175 and the operator s e retent consists of an arm 176 which extends extends through an opening 177 and is attached to the piston rod of the cylinder 154 so as to be movable therewith. At the end of the arm 176 are two oppositely arranged adjustable contact screws 178, 179 arranged, wherein the contact screw 178 is suitable to operate the switch 174 while the contact screw 179 the switch 175 can operate. .

As previously stated, the lapping machine is after 3rf indung with the usual manual starting and Stop switches as well as an electric timer that controls the length of time while = which machine is running before it will automatically stop. The running time is calculated so that they

100031/0293 *

is one third of the total time that is required to create a finished item on the machine. The actual cycle time for lapping of a workpiece will be increased by the length of time which is required to attach each wear ring to the Load and unload lapping plate. Ss is intended that the timer when the end of each Third of a cycle initiates the discharge operation, which then automatically triggers subsequent operations as they appear until the discharged wear ring turns on the lapping plate has returned with a fresh load of parts to be lapped, followed by the next third of the timed cycle will occur. It is also intended that the switching take place simultaneously with the Operation performed every third of the timed cycle is, for the reason that it is easier to slide a ring along the lapping surface when the Lapping surface is already in motion * The Switching direction is the same as the direction of rotation of the lapping disc, so that a minimum of force is required

109837/0293

to carry out the switching,

Before operating the mas-ciiine, it is necessary to activate the vibrating conveyor chute 116 so that a supply of rings is available in chute 117 'which are appropriately oriented with respect to the surface to be lapped and which are arranged in a row which ends at the star wheel 118 ¹ . The motors 114 and 122 are then started so that the star w ._- ■ ... ■ - -

wheel rings are transported one at a time from the chute 117 to the turntable 110, onto which the rings fall. With the turntable 110 rotating, the dropped ring is transported around until it hits the deflector rail 140, whereupon it is moved radially inward so that subsequent rings transported around by the star wheel 118 can fall onto a free surface on the turntable 110. Each ring is counted when it passes the counter Ί42 j, and when the predetermined number of rings for a charge has passed the counter 142, a pulse is transmitted to a relay! which halts the rotation of motors 114 and 122 and makes the machine ready for a discharge and charge cycle. 109837/0293

The time / at which the discharge cycle begins * - .. is determined by the machine time controller, which, when the time cycle is completed, stops the lapping plate and then energizes the cylinder 64 to the piston rod 66 (flg. 5 and 6) and causing the adapter 67 associated therewith to pull the crosshead 18 and its associated guide rod, pressure plate 16, wear ring 15 and articles 14 to the right as shown in Figure 6 onto platform 92. Just prior to the excitation of the cylinder 64-, the cylinder 103 was energized to lower its piston and the elevation steel plate 100 was tilted downward against the lapping plate so that the edge 101 thereof was slightly adjacent to the edge 13 of the lapping plate 12 Was deeper than the lapping surface 13, whereby the sliding of the finished rings 14 from the lapping surface onto the platform 92 is facilitated. The movement to the right, Fig. 6, of the head 18 _stops% when the Terschleißring A3 touches a SeMtfeer 180, on the. on platform 92 at the point where aar% 3? sole hole ring

concentric with respect to the circular opening in the platform. 92 is arranged. At this point the cylinder 64 is at the end of its stroke and the rings 14 rest on the flat top surface 106 of the disc-shaped elevator platform 105. This plate 105 is normally in its raised position

>. ■ ■: ■■;

Position in which their surface 106 is in the same Height as the top surface of the platform 92 is located.

The stop of the wear ring 15 and thereby. Conditional actuation of the switch 180 initiates the operation of the solenoid which controls the valve for the vertical 2frlinder 181, which is located under the elevator plate 1-0Jr and to which the plate is connected by the rod 107 ■ The 2grlinder 181 then lowers the Blevatorplatfe © 105 to the surface of the base plate 75 »In the process, the rings 14, the pressure plate 16 and the guide rails 17 are lowered until the receptacles are 25, which passes through the slot 22 of the guide rod 17, which c? Be2% _? 'End of slot 22 reached * to this point are the'

1852009

Guide rod 17 and the pressure plate 16 from the receiving rod 35 suspended while the elevator plate 105 Tind the rings 14- attached downward to the surface the basic x> bar 75 continue.

If the lapping beam used in the lapping work something is oily, and the rings to the soil surface the pressure plate 16 can be pressed, some of the rings stick to the printing plate. About the distance To ensure these adherent rings is a semicircular scratch 182 on the top surface of the Slider 79 around the right half (Fig. 7) of the Opening 81 fixed in the slide, which te 105 with the elevator plate is concentric. When descending from ' der.Plattform 92 goes to the base plate 75, the elevator plate 105 through the opening 81 in the slide 79 and the upper surface 106 of elevator plate 105 is the same with the top surface of the base 75 to rest.

The downward movement of the rod 1O7 of the cylinder 181 predisposed an arm 109, which connected with the rod 107

109837/0293

btmden and is mobile with it, also to lower oneself. This arm 109 is provided with spaced switch contact screws 183 »184, which touch switches that control the solenoid-operated valves for subsequent cylinder operations. to energize the valve for cylinder 88 and contact 184 hits a switch 186 which energizes the valves for cylinders 64 and 103 as the rod 107 moves upward. The operation of the cylinder 88 (Fig. 3), whose piston rod 199 is connected to the slide 79, causes the piston rod 199 and slide 79 to move to the left, as shown in the figure. 3 and 7. This movement of pusher 79 causes (a) adhered rings 14 to be scraped off the lower surface of pressure plate 16 by scraper 182, (b) rings 14 to be scraped off the upper surface of elevator plate 105 into opening 78 in the base plate 75 'through which they fall on the unloading trough 187 ⁵ and (c) a transfer of the rings that have been unloaded on the turntable 110 to the

^109837/0293 -

Upper Hache 106 of the elevator plate 105 ·· Bel of the termination the leftward movement of the piston rod 199 of the cylinder 88 If a contact 188 on the rod hits a switch 189 on console 85 of the machine »

With the actuated switch 189 this will be solenoid operated valve for vertical cylinder 181 excited about the elevator plate 105 and the one just on it to lift the unloaded rings to the pressure plate 16 and and then the lifting of the rings 14 and the pressure plate 16. through opening 104- in platform 92 and into the yer. * - wear ring 15 continue until the surface 106 of the Elevator plate 105 is level with the upper one Area of the platform 92 is located. At the end of the upward movement of rod 107 meets contact 184 on arm 109 which moves with the rod 107, the switch 186, around the solenoid operated valves for cylinders 64 and 103 to excite «This cylinder 181 remains over ■ the remaining third of a% klus in this state.

Meanwhile, the excitement can cause the switch 186 ate cylinder BS ₁ # i? Stimulates mi _t be around the rod 199

• move to the right as shown in fig. 3 shows, and thereby move the slider 79 to the right until the opening therein is concentric with the turntable 110. While With this movement of the slide 79 to the right, the rod 107, which extends through the opening 81 in the slide extends, nonetheless, from an opening to the

■. ■■■ - ■

others pass through the aforementioned slot 190, which is provided in the slide "79 for this purpose.

The energization of switch 186 is also energized
the valve for cylinder 64 to cause that cylinder to move its rod 66 to the left as shown in Fig. 5 and also energizes the solenoid operated valve for cylinder 103 around the cylinder 100
something to be raised above the surface 13 of the lapping disc 12 so that when the wear ring 15, its pressure plate and the hinge 14 slide to the left, as shown in FIG. 5) from the elevator plat te 105 ah the Iia
13, the hinge 14 the transfer / without difficulty
can perform

109837/0203

The movement of the "Ver sole ßringes 15 on the Surface 13 of the lapping plate Ji2 is due to the movement of the head 25 of the receiving rod 23 in the circumferential groove 37 accompanied in the stand 36 and through making contact between the contact tip 70 connected to the adapter 67 is movable on the piston rod 66, with a switch 191, the one at the intended end of the barrel of the piston rod

j-

66 is arranged. This switch 191 starts the next one Lapping cycle, and completes a circuit through the switch 171 (Fig. 2), which controls the rotary cylinder I50 to the Shaft 34, guides 19, 27 and 28 and all wear rings rotate until arm 170 contacts switch 172 and the pin 168 touches the stops more than 167.

Switch 172 causes cylinder 154 to be energized to raise rod 197 which then causes contact screw 178 (FIG. 13) to actuate switch 174 to move rotary cylinder 150 in the opposite direction, thereby driving pinion 147 (Fig, 11), the drive gear 146 being connected to the rack 158 and around the pinion 147

to turn back to its starting position «On this one At this point the switch 171 is reset in order to switch the cutters 19, 27 and 28 during reloading and attaching the next wear ring 15 on the Repeat lapping disc 12.

The return of the slide 79 to its right P position, such as 2 ¹ Ig. 1 is accompanied by the actuation of a switch 192 which resets the counter 14-2 and actuates the motors 114 and 122 to start the loading of rings to be lapped onto the turntable 110.

In the previous way gede_der becomes .three stations represented by guides 19 »27 and 26 Load one after the other, switch three times over 120 °, unload and automatically reload, without paying any attention on the part of the operator, apart from checking that the vibrator or feed 116 is full and that the finished parts, * which the slide left to be removed properly. HRlGlNAL

109837/0293.

Because of the consequences of the work of each step or every stage of the machine becomes a malfunction in any of the stages * z "B" that the stage does not is complete, stop the work of the whole machine. So if there is an insufficient number of rings on the Turntable 110 should be moved to the counter switch 142 not actuated to provide the necessary impulse to the to send to the next stage and therefore the machine will stop until the reason for the imperfect filling is established and corrected. Is can be a suitable Override, if necessary, be provided in order to manually close an unactuated switch, to test each of the working stages of the machine and to adjust. Such hand controls are in the ability of the expert and are therefore not described in detail. -

The cylinders previously explained are actuated by Bruckol from a suitable source, which is fed to a manifold 2GQ _t from the individual

Lines to the Yierwegeventilen go, the schematic • TO38 57/0293

are shown associated with each cylinder. Of the

Four-way valves is "-aas pressure oil through back clilagventile" with limited return current; to every ueite • routed each cylinder, with the exception of the height control cylinder 103, which has a short stroke and

should act quickly. This cylinder has a IO5 P valve 201 with a spring 202 at a ibe S _e instead of a solenoid. The elevator cylinder has a check valve 203 in its line from manifold 200 to hold the elevator in whatever position it is in when the machine is shut down.

} A ratchet relay is provided, which

a Sins sub-coil 204 and a fan coil 211 Has. Adjustable contacts 205 and 206 are closed in the set position.! like it too, the contacts 207 are «Adjustable contacts 208 and 209 are closed on the reset division of the ratchet relay · The contacts 210 are when the

109837/0291 bab-original «51-- ■ ....

count of the counter 142 closed, which then energizes the reset coil 211.

The timer shown in the block line at 212 has contacts 215 to 217 and line contacts 218. Contacts 214, 215 are the output line contacts to energize the motors and relays. Contact 210 becomes .. "when the timing control is complete excited and der-Kontakt .217 v.'ira during the timing energized «The contact 213 is with the timer back -. coupling connected and is also with one side 213 of the keep s 189 connected. Contact 215 is also with the other side 214 of the switch .189 tied together". ■. .

The lapping machine previously described will turn out to be load and unload automatically as long as there is a sufficient number of parts to be lapped on the * Counting philosophy is fed »If there is an insufficient number of parts, the parts counter is set the entire mechanism inoperative. As a result of

10983770293

Subsequent operation of the switches through the elements of the machine, a failure of any element to complete its movement will also bring the whole mechanism to a standstill. The machine reduced to this ^one IeISe the time during which the Läppseheibe stopped and is unproductive and freed the same time a worker for work on additional machines.

10 9837/0? 93

Claims (1)

-53-, Dari-BieWgeänöert Claims β device for loading a circular tree with a plurality of substantially identical "jerk pieces" having a flat surface to be lapped have, characterized in that the device a conveyor track (137) with a plurality of the workpieces (14) contains thereon, with their flat surfaces evenly oriented with respect to the web, a plate adjacent to the track, which is a circular Opening (76) therein which has a circular Determines space and can accommodate a plurality of oriented workpieces, also one with the circular Opening (76) concentric turntable (110), which holds the majority of the oriented '/ pieces in the circular Can support opening, a device for rotating the Turntables and a device to get the i '/ eratücke from the Bah »(137) aa the circular opening (76) to transfer * wSfarend sic & 4-door turntable (110) rotates 1098-37 / 0-293 -54- 1652G09 2 · Device according to claim 1, characterized in that the last-mentioned device is a bath (118) with a having a radial stop (119 »120) thereon which a wedge from the track can engage, wherein the wheel a circumferential zone on the turntable (110) overlapping a device for rotating the wheel and a circular path under the wheel »the one on the turntable ends, with the wheel the workpieces (14) individually by means of the stop (119, 120) along the circular Track and on the rotating turntable 3. Device according to claim 1 * characterized by a deflection device (140) which extends into the circumferential zone extends and workpieces located therein against . ■ _ '■. ■■; ; .- ■. ■ _; the center of the turntable (Ho) deflects »4 · Device according to claim 2, characterized in that the circular path is arranged above the turntable (110) and adjoining the turntable eats this path inclined downwards towards the same, around the gentle entrance β favor a workpiece on the turntable xm . T09857 / O293 Apparatus according to claim 2, characterized by a device (143) which contacts the workpiece as it travels over the circular path in order to count the workpieces and a device controlled by the counting device (142) for the device for rotating the turntable and to make the wheel, after which a predetermined number of workpieces has been counted, ineffective _f 6. The device according to claim 1, characterized by a disc (12) with a Läpyoberflache in the vicinity of the turntable (110), an elevator (105) in the vicinity and coplanar with the turntable, the elevator having a circular surface which is in the is substantially equal in area to the area of the circular opening (77) in the plate with the turntable lower than the lapping surface, a second plate (92) substantially coplanar with the lapping surface and having a circular opening (195) therein. of essentially the same size as the circular -56- 109837/0 79 3 has moderate opening in the first plate and over and "is arranged concentrically with the elevator, furthermore a device to move the first plate laterally, around the circular opening in it with the To bring the elevator into alignment, as well as a device for lifting the elevator (105) into the opening in said second plate and a device ■■■ ■■ around the v-pieces (14) from the elevated elevator the second plate. and slide onto the lapping surface. 7. Apparatus according to claim 6, characterized in that the second plate (92) contains a fixed part ι a vertically movable part near the lapping surface, a device remote from the lapping surface which articulates the vertically movable part with the fixed part and means to raise the movable portion above the lapping surface as workpieces (14) are moved from the raised elevator (105) over the "wide platen and onto the upper surface. 109837/0293 ' surface to be pushed. 8. gate direction according to claim 6, characterized in that the facility to remove workpieces from the lifted Elevator (105) to push a ring included, the the workpieces (14) can accommodate a frame, a guide device that extends over the lapping surface and extending over the elevator, a crosshead (18) in the guide means and which between a Position above the lapping surface (13) and a position above the elevator (105) is a device on the crosshead (18) which engages the ring can be brought to the movement of the ring with the. Crosshead to agree as well as a device to move the crosshead length of the guide around a ring and workpieces (14) located therein between the elevator and move the lapping surface (13) su. 9 · Device according to claim 6 »characterized by a discharge chute aligned with the first plate, the first plate having a »wide opening therein has »which are concentric with the elevator (105) 109857/0295 is arranged »when the first opening is in the first Plate is arranged concentrically with the turntable (110) »with the elevator part (14) in the second Opening can lower and the second opening over the Slide goes to make the lowered workpieces fall in it when the first plate is laterally displaced to align the first circular opening therein to bring with the elevator. 10. Device according to claim 6, characterized in that the guide means (191 27 »28) consists of aligned first and second parts, one means securing the first part to the frame, and « often ·! a vertically disposed bracket (34) for rotation is mounted on the frame above the lapping surface, and means are provided for securing the second part to the shaft and means for rotating the shaft. 11. Apparatus according to claim 6, characterized in that characterized in that the guide device consists of a first part, an execution, which attaches the first part to the frame, a vertically arranged W # ll · 109037/0293 ^ -59- arranged for rotation on the frame above the lapping surface (13), a plurality of radially extending guide members (19, 27, 28) attached to the shaft, each of the guide members being alignable with the fixed guide member, and means, to rotate the shaft to successively align the radially extending guide parts with the fixed guide part. Apparatus according to claim 8, characterized in that the crosshead (18) includes a member retained in the guide means for sliding movement along the same, headed extensions at the ends of this member, a fixed circular guide (37) attached to the frame being received one of the head provided with extensions in the circular guide ($ 7) and held against radial movement is _{a reciprocating force means attached to the frame, wherein a parallel with the guide device movable jaw is present, which can retain the other of the headed extensions to thereby move the crosshead (18) back and forth in the guide device, the circular guide device (37) being interrupted at one point (40) to permit the extraction of the one extension in a Allowing radial direction out of the guide device · 13. Device according to claim 6, characterized in that the device for displacing the first plate to the side contains a power cylinder (88), the device for lifting the elevator (103) having a second power cylinder (181) and wherein the means for moving the workpieces from the raised elevator over the second plate includes a third power cylinder, solenoid operated valve means for controlling each of the cylinders and limit switches associated with the first plate, the elevator and a device for moving the workpieces movable parts arranged sin d, ü dl «control the activity of the aolenoid-operated valve devices , u * 10983Ϊ / 0293 " ^βΙ " the v; irktmg der% liädör «ti 14. Device for loading a circular space sä diner feeisförffligen lj% psciieibe & it one? letezläal of essentially identical workpieces, which have a flat zii lapping surface, characterized by ' äi & förrichfcüng a Sing esfenaif _t det tüi dei * (12) rtifien chin and eiiieö lä? EiäfSrmigeii Wiaek ** piece receiving space on the lapping disc determined, a fiehlfitienfö £ mige iJräekpläfcfce ¹ (Ü} »diö löians M deat Riagäögööi? Dnetises is vertical and äüf de Höretting 04) ängnöfce Dfiiökpiätffeenfünpting »a device at the lower end of this guide, which the printing plate a ddr Fuiifüiig? Ereiiöfig rests on it "a fixed ring of the fcEeisfÖrffligön lapping disc (12) arranged Ranniön ^ a vertically arranged shaft, which is rotatably attached to the frame concentrically with the circular lapping disc (12), an aural one attached to the lower end of the corrugation" Leadership, «in cross head (Ii) in dir horiaontelen leadership and in it adjustable, an institution which the ; 1S5200S Pressure plate guide in the cross head for movement. f - - ■■■ '■ attached to it and a device on the frame # cooperates with the head to prevent the movement of the cross head in its horizontal guide except in a predetermined angular position of the horizontal guide with respect to the frame. Device according to claim 14, characterized by a plurality of guides 19, 27, 28) and at the Willi attached Qüerhäupt s (18) and means for the shaft rotating intermittently sm to each horizontal guide succession at the predetermined angular position with respect to to bring the frame. 16. The device according to claim 14, characterized by a device for rotating the lapping surface disk (12) V nine timing device (212) which controls the action of the lapping disk turning direction and prevents the action of the cylinder before the lapping surface has stopped rotating. 17. The device according to claim 14, characterized by tine to the Läppeoheibe (12) adjoining platform (92), 100837/0213 ■ - ■■ «- which has a circular opening (195) which is slightly larger than the pressure plate (16) around the back * to allow passage of this plate, but smaller than the ring (15) t whereby the ^ uerhauptführung on the opening extends, furthermore an elevator disc (105) .. · which can move vertically between one position, in which they are essentially in the circular opening is received under the platform, a device to move the head (18) along the main guide, around the ring pressure plate and the pieces (14) under the pressure plate on the platform with the pressure plate and to bring the workpieces to the elevator (105), means for lowering the elevator and means (23) for lowering the pressure plate (16) limited on its guide so that the pressure plate is suspended over the "piece (14) and a Device to move the workpieces to the side of the elevator, like a power device (162) to move the to strip off workpieces adhering to the pressure plate (16) from the pressure plate 109837/02 9 3