DE3113185A1 - Stop system, especially for handling devices - Google Patents

Description

GEAR FACTORY FRIEDRICHSHAFEW Aktiengesellschaft Friedrichshafen

Stop system j especially for handling devices

File 5756 F

The invention relates to a stop system, in particular for handling devices according to the preamble of claim 1 =

Various designs of this kind of attachment system are known, as described in the Prospelct about attachment systems in the modular range of Pa. Robitron Ag, CK-8222 Beringen / Schaffhausen showed you all the ways for the two extreme end positions fixed stops a.uf, which are adjustable within narrow limits, while they are usually equipped with an electronic cam switch for a rough position setting for intermediate positions between these end positions « An exact position of the target is provided by DE-PS 27 17 567. known stop system, in which a controlled bolt is approached with stop nuts provided on a threaded spindle. "This known stop system gives good positioning accuracy, but the same position can only be reached by approaching from one side." both ends equipped with hydraulic Därupfeinrichtungen to attenuate to the harsh blow of Positioniermitter when striking the stop _o bring the damping devices but the disadvantage that their damping characteristic Rait time and doing? ejaperatur alls _s whereby a time control is _needed? in order to obtain a reliable effect between different braking levels »The hydraulics cannot be switched off independently of the damping time»

The object of the invention is to provide a stop system for Specify handling devices, which makes it possible in a simple manner that between the end positions Any intermediate positions located can be approached from both sides «One of the easy adjustability with high accuracy and under

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Use of few components can be achieved “also on the one hand, without the use of hydraulic dampers, a smooth approach to the desired positions and, on the other hand, not an expensive one Control can be used for positioning.

This object is achieved according to the invention with a stop system having the features of claim 1

The stop system according to the invention consists in known way from / via any linear drive versus one with at least two stops provided positioning spindle and a switching cam bar is displaceable in parallel, as well as from a control device with associated switches and actuators, according to the invention the carriage both a via the Switching cam strip for position control and rough adjustment from intermediate positions interacting with the drive, as well as a switch via the positioning spindle or at least one on it at will between the attacks fixable indexing nut with a drive-independent indexing bolt interacting indexing unit for mechanically locking Fine adjustment are assigned removable. This is via switch and switching cam strip Rough positioning is achieved by turning off the drive, which is then achieved by the interaction of the the index nuts located on the positioning spindle with the indexing bolt of an indexing unit with the desired accuracy is fine-tuned.

The indexing unit can be approached from both directions of movement by stops assigned to it and by can be driven through by any number of indexing nuts. This ensures that a single indexing nut in each case practical for setting two positions (from the left, from the right) what the arrangement of a larger number of index nuts allowed. Furthermore, the indexing unit has one in one

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Indexing housing to the positioning spindle or to the indexing nut which is movable thereon, indexing _bolts which are guided transversely when the drive is switched on; the passage quartz of indexing nuts bsw. Stops is withdrawn, but when the intermediate position is reached and the drive is switched off, an indexing piston that can be operated independently of the drive can be pressed into a centering contour of the associated indexing nut =,

According to a further development of the concept of the invention, the positioning spindle is part of a guide unit, consisting of two guide rods that are parallel to one another and attached to the positioning spindle between two end plates, while the slide, on which a cylinder is attached via a swivel joint, the piston rod of the cylinder on the an end plate is hinged ₅ is arranged displaceably on the guide rod, and wherein the centering contour is a grooved recess located on the outer circumference of the indexing nut _o

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Furthermore, the is in a known manner with the connection nuts cooperating stop according to the invention an indexing unit, the indexing bolt in the groove-shaped The recess of the indexing nuts engages »This ensures that the stop or indexing nuts regardless of the direction of translation of the slide by the indexing bolt engaging in its groove is precisely positioned or held.

According to a further development of the inventive concept, the indexing unit consists of one on the slide attached indexing housing, which has a cylindrical, having coaxial bore with the threaded spindle through which the indexing nuts slide while yet another bore, essentially perpendicular to the first bore, is provided through which the index bolt passes through. This index bolt is in turn part of the piston of a single-acting cylinder, which is also attached to the slide and together with the indexing housing forms the indexing unit. At the end of the piston rod opposite the indexing bolt and protruding from the indexing housing two cams are provided, while two switches are attached to the indexing housing in such a way that each switching cam a switch is assigned. These cams and switches are used to determine the position of the indexing bolt, that is, its advanced or retreated position monitor «For precise adjustability, either the cams are arranged to be movable, while the Switches are provided in a fixed manner or the cams can also have a fixed position, while the switches are displaceable are attached.

According to the invention, the guide unit has a length which is parallel to the guide rods and which is essentially the same attached to the threaded spindle having cam ledge, on which essentially the same position as the stop nuts Switching cams are provided. Same-

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In the early stages there is a switch on the slide Switch plate attached »This switch works together with the cams on the cam bar results in the electrical cam circuit, which is the coarse Positioning was used. The limit switches, which are preferably multiple proximity switches, can, however, also be any other type of switch that can be operated via cams »

The stop system according to the invention has the advantage that submits a smooth, precise positioning becomes without hydraulic damping devices are used that require additional time control »The accuracy is ensured by the direct, unyielding fastening (without damping device management) achieved on the guide unit The hydraulics can now also be switched off independently of the damping time » The coarse position is reached by stopping the drive, while the fine adjustment is done with the indexing bolt takes place independently of time =

Further features of the stop system according to the invention are given below in connection with that shown in the drawing Embodiment explained »

The drawing shows a schematic representation of a plan view of the stop system according to the invention, with a linear unit I ₉ which can be designed essentially the same for each of the three Cartesian axes 12 exist, between which two guide rods 13 and 14 and a threaded spindle 15 are arranged parallel to one another. Furthermore, a cam ledge 16 is attached to one end of the end plates 11 and 12, essentially parallel to the guide parts, on which switching cams 17 are arranged in a shiftable manner. A slide e is displaceably arranged on the guide rods 13 and 14 via bearings 4 which contain ball bushings, sliding bushings ο "the like". A cylinder 5 is attached to the slide 3 by means of a swivel joint 6 to compensate for play.

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pi at "to 11 anqo IeJiR ^.«. JAn ilfejil of the .Wo clJonlc · .tüte IG »instructing side of the ΰα1ι1χ · 6 ^ .ύη; 5.ί ^; j ^ it" * j. * iii (5..5cVid .terplattc 8 attached, on which a switch 9 is provided in such a way that it rnit

the switching cam 10 zuueunmankt. on dom Sehlitten 3 is furthermore a l'nde-

/ xieinheit provided, which on the one hand consists of an indexing housing 21 which has a bore 35 through which the threaded spindle 15 is passed coaxially in such a way that indexing nut 22 provided on the spindle 15 can slide through the bore 35. The Indexierrnittern 22 are each clamped by a lock nut 24 and each have a groove 34 on their circumference _o On the threaded spindle 15 are also provided at the two outer ends of each end stop 25 secured by a lock nut 26. The indexing unit 20 also consists of an indexing bolt 23, which is part of a piston 33 of a single-acting cylinder 32. This indexing bolt has a similar V-shaped design (pointed) as the groove 34 of the indexing nuts 22 o This ensures that the indexing bolt 23 engages snugly in the groove and allows precise positioning two switching cams 29, 30 are provided, which interact with two switches 27, 28 attached to the cylinder 32. Switches and cams or switches or »cams can be arranged so that they can be adjusted in their position to one another,

The setting of a desired index position is carried out in the following way:

The indexing bolt 23 is extended or brought into its retracted position. The slide is now 3 is moved to the desired position and then the indexing nut is rotated until it is in the indexing housing 21 ends smoothly on the front sides. Then the indexing bolt 23 is retracted or retracted as a test. brought into its front position and a necessary FoinkorrokLur by turning the indexing nut performed. let the position with desired If accuracy is achieved, the indexing nut 22 is braced by means of the lock nut 24.

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A linear unit of the stop system according to the invention works essentially as follows: The desired indexing position is set by actuating the cylinder; 5 roughly approached with the help of the Noclcenabßchaltungo formed by the switch 8 and an on t spiro ebon eingoKto_llto cam Training and the V-shaped groove configuration of the indexing nut 22, the slide position is precisely corrected. The indexing bolt positions are for automatic work processes. with the switch 27, 28 addressed via the cams 29, 30. An actuating cylinder 5 is dan can only be carried out by the action of the switches 27, 20 when the Indexierbolsen is in its extended or retracted position _o 23rd

The stroke of the carriage 3 is continuously adjusted by the two end stops 25 konterbaren The indexing unit with the Indexiergehäuse 21 abuts frontally on the end stop 25 at _o

According to the invention, the Gevjindespindel can be used on any Kind with the guide unit 10, as in the drawing shown or be attached to the carriage 3, but in this embodiment then the 'indexing unit must be attached to the guide unit itself ο

If the linear unit is to serve as a vertical unit, so the end plates 11, 12 are in a stationary stand at the two opposite ends of the stand opening fastened in such a way that the guide rods 13,14 have a vertical alignment * A horizontal linear unit is then on the carriage transversely to the vertical unit to fix"

File 5756 F

The stop system according to the invention can be modified in the most varied of ways within the scope of the invention and adaptable to the conditions of the elements to be positioned ο For example, the threaded spindle can be adjusted via separate Bearing blocks can be attached to a guide element (such as the guide bed of a handling device) and with an indexing unit located on the carriage (e.g. the sliding carriage of a handling device) work together while the cam rail is essentially in extension of the spindle at the same Element is attached.

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Reference oak list. 1. linear unit

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3ο bed slides 4β bearings 5 · cylinder 6β swivel joint 7. piston rod 8o switch plate 9a switch ' ^ - ... 10 «, management unit

11. End plate '.- - 12'. End plate. 'H3 «guide rod 14β guide rod 15» positioning spindle 16o mock bar (switch =) 17 «crouch 18 _S bolt

2.0 · Indexing unit 21o indexing housing

22® indexing nut fs ■ ■

23- indexing bolts 24ο. Lock nut 25o. © nd -) stops 26e. Lock nut 27ο holder 28o switch 29 _e Noclce 30 «, cam 31c piston rod

.-.-. 32ο cylinder, © infachwirisend ■ .. ·. 33 _β piston '

■ 34 · groove-shaped recess 35.Bore. "■. ■ 36o l © hr«! Ig file 5756 F

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Claims (1)

3 11 3 1 S δ ZALFNKADl- ¹ ABITIK FR.TEDWICHSHAFFN Ak ti narrow ac 11 ν, cn η Γ L
Friedri chshaft η Claims Stop system, especially for handling devices essentially consisting of a slide with any linear drive, which is parallel to its main axis of movement and opposite a positioning spindle with at least two stops for the target and Hubbev / ecjung and relative to a switching cam strip for the position control is relatively movable along guide, as well as edner Control device with associated switches and actuators j which with the drive for control of intermediate positions cooperate, thereby marked, a. that the carriage (3) has both a switch (9) which interacts with the drive via the switching cam strip (16) for position control and rough adjustment of intermediate positions and a switch (9) which can be fixed as desired between the stops (25) via the positioning spindle (Ί5) or at least one thereon Indexing nut (22) with a drive-independent indexing bolt (23) interacting with Ixxdexiereinhe.it (20) for mechanically locking fine adjustment are assigned to be carried along; ho and that the indexing unit (20) can be approached from both Boivugvuigo directions by stops (25) assigned to it and can be driven through by any number of index nuts (22); Co as well as that the indexing unit (20) one, in one Indexiergehäuso (21) to the positioning spindle (15) or «sur File 5756 F indexing nut (22) which is movable thereon has transversely guided indexing bolts (23) which, when the drive is engaged, cut from dom PaüKugcquc-r; (Bore 35) is withdrawn from index nuts (2.2) or stops (25), but can be pressed into a centering contour (34) of the subordinate index nut (22) via an indexing piston (22, 33) that can be operated independently of the drive when the intermediate position is reached and the drive is disengaged. 2 «. Stop system according to claim 1, characterized in that that the position spindle (15) is part of a guide unit (10), consisting of between two end plates (11, 12) parallel to each other and to the positioning spindle (15) attached two guide rods (13,14) is that the Slide (3) on which a cylinder (5) is attached via a swivel joint (6), the piston rod (7) of the cylinder (5) is articulated to one end plate (11), arranged displaceably on the guide rods (13,14) and that the centering contour (34) is a groove-shaped located on the outer circumference of the indexing nut (22) Recess (34) is " 3ο stop system according to the preceding claims, characterized in that the indexing housing (2i) is attached to the slide « 4 «stop system according to the preceding claims, characterized in that the indexing bolt (23) is part of the piston (33) of a single-acting, on the slide (3) attached cylinder (32) is. 5. stop system according to the preceding claims, characterized in that on the indexing bolt (23) File 5756 F β DOB4 I opposite and protruding from the mandrel Xndexiergehäuse (21) End of the piston rod (31) two switching cams (29, 30) are provided, while the indexing housing (21) has two Switches (27,28) are fastened in such a way that there is always a switch cam (29 bzi \ r * 30) which interacts with this Switch (27 or »28) is assigned«, 6o stop system according to previous claims, characterized in that said cam bar (16) is fixed to the X ⁿ ührungseinho.it (10) parallel with the Führungr.otangen (13, 14) substantially the length of the threaded spindle (15 ) that on the mock bar (16) essentially identical-position cams (17) are provided with the stop nuts (22, 25) and that a switch plate (8) carrying the switch (9) is attached to the carriage (3) isto