DE102006061310B4 - Device for moving masses by means of a shaft or roller, which can be driven by a motor drive - Google Patents

Abstract

Device for moving masses by means of a shaft or roller (10, 11), which can be driven by a motor drive (4) and braked to a standstill in predetermined angular positions and driven again, with an inductive measuring system (16, 17), in which the shaft (10, 11) is associated with an actuating element (16) which attenuates an inductive ring sensor element (17) which has one or more inductive position sensors or sensors (18, 19, 20), which of the ring sensor element (17) detected signals can be forwarded to at least one microprocessor, which is or are included in a control or regulating device (25), which forwards signals to the motor drive (4), wherein the inductive measuring system (16, 17) by a - or repeated driving a desired rotational position self-learning, that is programmable, wherein the inductive measuring system (16, 17) has a zero position (22), wherein the ring sensor element (17) the shaft ( 10, 11) with the actuating element (16) encloses gap distance, wherein in one of the device associated with ...

Description

genus

The invention relates to a device for moving masses by means of a shaft or roller, which is driven by a motor drive and can be braked in predetermined angular positions to a standstill and again driven.

State of the art

From the EP 0 643 636 B1 are turntables with a stepper drive with a rotatably mounted by bearings rotatably mounted on the top of a housing table top, from the underside a plurality of evenly spaced angularly offset on the same diameter drive pin projecting, which engage in a cam in a housing mounted in the motor-driven drive roller , wherein the course of the control groove determines the characteristic of the rotational movement of the table top. The circular limited table top has a diameter which is larger than the associated upper, also circular limited, the storage area forming region of the housing. The area of the table top which radially projects beyond the housing is reinforced in its thickness in the downward direction such that it somewhat surrounds the bearing area of the housing in the downward direction. In the radially outwardly facing wall of the housing, the housing-side raceways of the rolling bearing for the table top are formed in the storage area. At the downwardly facing surface of the housing in the storage area down embracing table top edge region, a bearing ring is releasably secured, wherein in the raceways in the housing opposite inner surface of the table top lying partially in the overlapping outer edge of the tabletop and partly in the bearing raceways for the Table top side mounting of the rolling elements are formed. The housing-side raceways of the rolling bearing are formed by two spaced apart in the height direction, arranged in a groove in the upper bearing region of the housing wire rings made of hardened steel wire. The table-top side raceways of the rolling bearing are formed by two spaced apart in the height direction wire rings of hardened steel wire, which are arranged in a partially in the housing-facing inside of the annular projecting edge portion of the table top and partially formed in the bearing ring groove.

The drive roller of the turntable always moves in the 360 ° step, that is one turn each forward or back. For rotary tables with two or more positions, for example 180 ° increments etc., reduction gears are used. The query of the various positions is very complicated and expensive, since this cam are used and so-called initiators and series limit switch. It should be noted that the different customers set up the query positions themselves. The end position determination is therefore set by the end customer, which is very complex and load-dependent. In case of mechanical wear, a readjustment is also required, which is again time and labor consuming.

From the DE 20 2005 019 464 U1 an actuator of a motor vehicle is previously known, with a motor for actuating the actuator, with a sensor element for detecting a parameter characterizing the engine and connected to the sensor element and the motor control means for controlling the motor, wherein the control unit is adapted to the course to record the characterizing the motor parameter or a signal derived therefrom on the travel, to compare the recorded course with a travel dependent Abschaltschwelle, to stop the drive when driving over the Abschaltschwelle and / or reverse and to change the Abschaltschwelle in response to a shutdown of the actuator , The adjusting device should be used for the employment of an electrically driven side window as an actuatable actuator in a motor vehicle use. For this purpose, an electric motor is arranged in a door trim, to which a Hall sensor is assigned as the sensor element, which measures the speed of the motor by means of a ring magnet placed on the drive axis of the motor. The control unit is connected via a control line both to the motor and to the sensor element. Control signals from the control unit are sent to the motor via the control line, as well as receive information about the position of the actuator and the speed of the motor. As such signals act, for example, the voltage pulses of the Hall sensor. To control the motor, the control unit sends corresponding signals via the control line. The motor then actuates the actuator via a drive element. The trained as a side window actuator is then closed or opened. For controlling the actuator, the control unit has an electronic assembly comprising a microprocessor. Werter are assigned to the control unit via connecting cables and connections a temperature sensor and a voltage sensor. To generate the corresponding measurement data, the temperature sensor and the voltage sensor are assigned a measuring electronics. The measuring electronics can be actuated via a control line from the control unit. In the microprocessor is from the obtained speed curve based on experience values in sections each a Abschaltschwellenwert for the side window and a tracking value for the Speed curve generated. The speed curve is compared in sections with the corresponding calculated shutdown threshold. As a section, for example, one or more full revolutions of the engine can be defined. If the speed within the observed section falls below the tracking value, then no new shutdown threshold is calculated for the following section. Otherwise, the switch-off threshold value is determined from the given curve for the subsequent section. If the determined speed falls below the Abschaltschwellenwert, the motor is driven reversing. It is a trapped case detected. Thus, the controller learns to adapt to changing circumstances during the actuation of the actuator in the course of the travel.

From the DE 197 05 543 C5 is a door drive, in particular for garage doors, previously known, with a motor, a coupling device, the drive energy of the motor in motion of the gate umseht and a control unit with a housing which controls the motor in dependence on the control unit modules, the function of Assemblies via parameters to the control unit is individually adjustable, and wherein the control unit for setting the parameters of the modules comprises a control unit with a display and adjusting means, a memory device for storing parameters and a processor device, wherein the control unit and terminals for connecting the modules to the Housing accessible from the outside, wherein the processor unit controls the memory device and the operating unit such that the parameters of at least some of the modules are displayed in the context of menus on the display and are adjustable by means of the adjusting means, the Menus are arranged according to higher-level function groups, and wherein certain parameters and / or menus are adjustable or selectable only after entering a code. By this design, the maintenance of a door drive to be reduced. This is to be achieved in that the operating unit and terminals for connecting the modules to the housing are accessible from the outside, so that the control unit of the door drive can be delivered factory encapsulated by the housing. The modules are simply connected via the corresponding terminals on the housing. The setting up of the door drive, ie in particular the setting of the parameters of the modules also take place from the outside via the operating unit by means of the menu-based operator control. The memory used is an EEPROM. The service memories should also be designed to be relevant to security. They include, for example as parameters a maintenance interval and an identifier whether certain maintenance has been performed. In the homing menu parameters can be set, which are determined for example in the context of a so-called "teach in", as the positions to be based on the door drive as the end position for the closed or the open gate. One of the assemblies is a presentation or angle encoder, for example, is coupled to the drive shaft of the motor and angle angle leads to the interface board, from which the absolute gate position can be calculated. The Drehstellungs- or angle encoder can be formed for example by a Hall sensor. The processor board includes a microprocessor, a ROM memory, a RAM memory, and an EEPROM memory. The micro memory is programmed to set the various parameters so that the parameters of all modules can be displayed in the context of menus on the single-line display by means of the adjusting element and the selection button and set using the selection button.

The EP 1 501 185 A2 relates to a method for operating a motorized positioning device with a rotor and a stator having electric motor, in particular synchronous motor, with at least one pair of poles and a control device for the electric motor, wherein the phase currents and / or phase voltages of the electric motor are measured and used for sensorless position determination of the rotor , wherein below a predetermined minimum speed, a pole shift of the rotor is determined by evaluating the measured phase currents and / or phase voltages, wherein a determined pole shift is compensated automatically by readjustment of the electric motor. Devices of this type are intended to be used to drive a tool turret or a rotary indexing table. In this case, the lower speed range is passed through relatively frequently, in particular during acceleration and deceleration from or into a rest state in which the predetermined position is maintained. Due to the required high positioning speeds, it is possible, in particular during braking of the electric motor, to skip one pole of the rotor relative to the stator, which leads to an actual misalignment of the rotor and thus of the rotatable device connected thereto. The electric motor is a synchronous motor.

The JP-56-081405 A shows and describes a control device with a photosensor to control the rotational movement of a motor with worm gear.

task

The invention is based on the object, a device for moving masses according to the type presupposed in claim 1 to the effect that the query of the direction of rotation and any switching points or end position controls and their custom device or programming is easier to accomplish.

Solution of the task

This object is achieved by the reproduced in claim 1 features.

Inventive embodiments are described in claims 2 to 20.

Some advantages

In the device according to the invention, an inductive measuring system evaluates the respective position and transmits corresponding signals to an integrated microprocessor. This microprocessor is included in a control or regulation by which the motor drive controls the roller accordingly. During the rotational movement of the roller load and speed dependent on the motor drive is switched on or off within the so-called locking angle. A distinction is made between slow and fast, separate switching points. These switching points are self-taught and continuously optimized, for example during load changes or brake wear. The teach-in of the switching points is "learned" (stored, teach-in) by activating the desired switching points or positions once or several times. If these switching points are to be changed, the new switching points only need to be controlled once or several times in order to store them in the relevant microprocessor according to the teach-in method or "teach in". In the event that the switching points change within the specified limits, for example outside the so-called locking angle, a fault message is output. In addition, the controller and / or controller monitors the achievement of a zero position and the crossing of the same. In this case, the device according to the invention can be used both for the reversing operation and for the continuous operation.

Another advantage is that the ring sensor element is monitored for, for example, wire break and short circuit the device and in the event of an error turns off the outputs and emits a fault message.

It is particularly advantageous that the microprocessor monitors and stores relevant diagnostic data such as number of cycles, cycle times, rotation breaks, overflows, etc. These data can be called up via a serial interface.

The ring sensor designed as a ring initiator can be designed to fit all rollers and be functionally assigned to a black box, which is included in a control cabinet and thus in a control or regulation and has custom applications. This black box receives input signals from the inductive sensor or the inductive sensors as an analog value or as a serial signal and detects, for example, the direction of rotation, the zero position and the rotational speed as well as any tolerance values. In addition, an optimization of the braking point is thereby made possible, so that, for example, the roller comes to a stop at the exact end position. Even emergency stops, switching operations on fast to slow driving, etc. can be detected, so that, for example, overload operations can be stored and retrieved at any time.

Whenever "slow" or "slow travel" is mentioned in the claims and / or the description, it is understood to include lower and higher speeds and thus to mean corresponding rotational speeds.

A device according to the invention can be used with particular advantage in turntables with step drive with a rotatably supported by rolling bearings in a housing table top, from the underside of several, arranged at equal angular intervals on the same diameter formed as a roller bolt drive bolts emerge, which in a drive groove in a engages in a housing, motor-driven roller engage, the course of the drive groove determines the characteristics - acceleration, rotation, standstill - the rotational movement of the table top, for example, the roller is associated with an actuating element, which together with a roller enclosing the roller gap, Inductive ring sensor forms an inductive measuring system which stores this position or positions in a microprocessor by one or more times driving predetermined positions, these positions as signals to a control or control device for the motor drive of the roller of the turntable are forwarded. By means of this inductive measuring system, for example, the braking position with automatic wear regulation and automatic load-dependency regulation can be automatically displayed in a control and regulating device. The microprocessor may also retrievably store the turntable statistical monitoring of cycle times, rotational speed, number of emergency stops, number of fast and slow travel shifts, and vice versa. Since the inductive measuring system with the micro memory continuously records the rotational movement of the roller, limit values can also be precisely controlled before and after the ideal zero position.

Inventive embodiments

Further inventive embodiments are described in claims 2 to 20.

Some advantages

Rotary tables are usually driven by single-pole or pole-changing three-phase asynchronous motors and control of the zero position. The position detection of the rotary table for selective tool release does not take place via the controller, but is queried separately via proximity switch directly on the turntable plate. By an actuator on the drive roller, the position of the roller is detected with an inductive ring sensor over the full 360 degrees. The zero position of the rotary roller (locking angle) is physically always in the same place for each division. If the roller is in the zero position, the output "in position" is switched on. The zero position is given when the roller is within the locking angle of, for example, 30 degrees. This means that the ideal zero position is in the middle of the locking angle, ie at 15 °, for example. In this ideal zero position, the turntable should come to a stop. The zero position is indicated by an LED. If there is a deviation of more than five degrees, the cut-off point is automatically corrected by control to regain the ideal zero position at the next rotation. If the corrected switching point were outside the locking angle, for example due to brake wear, this would lead to damage to the turntable. This must be prevented, in addition this is indicated by an LED (end of the locking angle). If the zero position is exceeded, the roller comes to a stop outside of the locking angle, the output "overflow front" or "overflow back", is turned on. The overflow can be indicated by one LED each.

Functional operation of the turntable control

The turntable controller receives a directional start signal from the higher-level controller when the turntable is to rotate "forward on" and "backward on", and additionally a signal when the turntable is to rotate at the low speed "slow on". The turntable controller or controller then checks the drive clearances for each direction (no overflow, forward / backward position not yet reached). If the drive enable is correct, the "Forward Start" or "Backward Start" output is switched on and the contactor of the turntable motor for the enabled direction is switched on. Only now does the turntable turn. If the locking angle is left, the output "in position" is switched off. Switching off the rotary table movement takes place when the previously calculated switching point has been reached; the "Forward Start" or "Backward Start" output is switched off. If the "Forward Start" or "Backward Start" output is switched off, the rotary table movement is therefore zero and the roller in the locking angle, the turntable control activates the output "in position". If the stop angle is overrun, the "overflow front" or "overflow back" output is switched on. The higher-level controller or control unit resets with the signal "in position" or "overflow forward", "overflow backwards" and the start signal "forward on" or "backward on". This is controlled by the turntable control. When the start signal is set again, a new movement can be triggered.

The start signal "forward on" or "backward on" must be switched on during the entire turntable movement. If the start signal is interrupted, the output "Forward Start" or "Backward Start" must be switched off immediately. During initial commissioning or after device replacement, the default value of ten degrees for "fast" and five degrees for "slow" before the ideal zero position causes the shutdown. Thereafter, the difference between the ideal zero position determines and stores the turn-off point specific to each turntable. Since the switch-off point is also influenced by external influences, for example load, it can come to the zero position when switching on for the first time after load changes. This is the case, for example, when the turntable is operated without customer load during initial startup at the manufacturer and later at the customer with the final load.

Fault detection and diagnosis

The turntable controller according to the invention continuously tests its own system to eliminate malfunction. In particular, the ring sensor is to be checked for correct function, the position of the actuating element within the working range of the ring sensor and the function of the microprocessor. In the event of a fault, the two outputs "Forward Start" and "Backward Start" must be switched off immediately and the output "Fault" must be switched on. With detection of "overflow forward / backward" and "end of latching angle", the "fault" output is also switched on.

The rotary table control must permanently store the following data in order to be able to call it up via a serial interface: counter cycles, step time, counter "overflow forward", "overflow backwards", "counter end latching angle", "counter interruptions start signal", the 50 last switch-off points "fast" and "slow", the last 50 actual position values at speed = zero.

Electrical design

The rotary table control is to be connected via a 19-pin M23 plug-in device. The power supply and the signal exchange with the higher-level control or regulation takes place via the plug-in device. When bolted, the entire controller must meet IP65 protection.

The entire controller is designed for, for example, 10 million cycles. The supply voltage is 24 VDC +/- the usual tolerance. All inputs and outputs are PNP switching. The switching level uses 24 VDC +/- usual tolerance. The reference potential is the OV connection. The outputs "Forward Start" and "Backward Start" are either designed short-circuit-proof or to monitor against short circuits. They are designed for a continuous current of 0.5 A at 24 VDC with inductive load and for 10 million cycles. If the outputs are monitored for a short circuit, this is indicated, for example, with an LED in the event of an error, and the "Fault" output is switched on. The outputs "in position", "overflow forward", "overflow back" and "fault" are designed for a continuous current of, for example, 250 mA at 24 VDC. The serial interface is located behind a bolted cover, for example.

Mechanical design

The ring sensor and the controller or regulation are housed in a housing. The housing is designed for use in an environment contaminated with oils, greases, dirt and welding residues, for example to comply with the applicable regulations for use in the automotive industry. The entire control or regulation must be resistant to vibration and vibration and designed accordingly and may therefore be cast with Giesharz.

Tool position query on the turntable plate

The position inquiry on the turntable plate is to be offered to the customer in two different ways as an option, namely "standard" or "security". These queries are queried and controlled directly by the "higher-level" control or regulation and corresponding evaluation devices. The position inquiry has no connection to the turntable control unit and is a stand-alone option, which should offer the customer a standard sophisticated and cost-effective solution for position inquiry. When selecting the sensors standard commercial products can be used. In the "Standard" version, the query is made using standard proximity switches. Used for this are double and multiple sensors with M12 plug-in connection, which are then mounted according to the turntable parts. In the "safety" version, the query is made using category 4 safety sensors. These should also have an M12 plug-in connection and are mounted according to the turntable pitch. The safety sensors should work without a specially coded actuator to facilitate cost and installation. The queries should be spatially arranged in such a way that a confusion of the connector is excluded.

Further features and advantages will become apparent from the following description of the drawing, in which the invention - partly schematically - is illustrated, for example. Show it:

1 a turntable in perspective view, shown partially cut, with a motor drive;

2 a perspective view of the rotary roller with an inductive measuring system;

3 a schematic representation of a turntable circuit and

4 an inductive ring sensor element having a plurality of position sensors or sensors designed as microswitches.

With the reference number 1 is in 1 Overall, a turntable referred to, on its upper side a circular limited table top 2 which is above a housing 3 rotatable and by an outside of the housing 3 arranged electric drive 4 is drivable. These are on the shaft of the electric drive 4 V-belt pulleys 5 arranged, which over V-belts 6 V-belt pulleys 7 drive. The V-belt pulleys 7 are on one of the housing 3 led out end of a rotatably mounted in the housing shaft 8th arranged rotationally fixed. The wave 8th carries a snail 9 a serving as a countershaft worm gear, which with the screw 9 meshing worm wheel at the end of a housing 3 mounted horizontal drive roller 10 is arranged, in turn, a drive roller 11 carries, in the basically cylindrical peripheral surface of a drive groove 12 is incorporated, which - when the drive is switched on 4 - one after the other from the table top 2 down into the case 3 protruding roller bolt 13 a set of rolling pins arranged at equal angular intervals on a common diameter 13 intervenes. The length of the drive groove 12 in the drive roller 11 is sized so that while the drive is running 4 one in the drive groove 12 introduced and then in the further rotation of the drive roller 12 entrained roller bolt 13 just at one end face of the drive roller 11 from the drive groove 12 exits when the next roll pin 13 on the opposite side in the drive groove 12 entry. The movement characteristics, ie acceleration, deceleration and other rotational movements of the table top 2 during the passage of a roller bolt 13 through the drive groove 12 depends on the course, so the slope of the drive groove 12 , from. It can standstill periods - when engaging the roller bolt 13 in a circumferentially extending groove portion -, acceleration and deceleration periods and periods of constant speed - upon engagement of the respective roller bolt 13 in a groove portion with a constant pitch - successive. In the from the 1 apparent turntable has the table top 2 eight roller bolts 13 on, leaving the tabletop 2 for example, accelerates a total of eight times from zero to a constant speed during a full revolution and then decelerates back to zero, that is, to a standstill, is decelerated, wherein the standstill phase, in which, for example, the machining of workpieces in different around the turntable 2 arranged around processing stations, or workpieces in recordings in one on the table top 2 attached tool plate taken or be carried out of them, by switching off the drive motor 4 can be extended. The tabletop 2 So in this example, it turns eight times in total and during the standstill periods moves exactly to the assigned machining or workpiece fixture or discharge position.

Of course, the number of roller bolts 13 be greater or smaller than previously described, so that the table top 2 So for a full turn, for example, perform six steps or less steps.

The housing 3 has in its upper, the table top 2 overlapping area a circular in plan view limited, upwardly projecting bearing portion 14 on, in the outer peripheral surface of a groove is incorporated, which has a housing side as raceways for bearing balls 15 serving hardened wire ring of steel wire.

The invention is not limited to turntables. Instead of a type with worm gear and rotary tables with spur gears or globoid precision step gear, but also lifting tables, in which the rotary roller is arranged vertically and are designed for jerk and shock-free method and positioning of a payload can reach the application. The invention is not limited to turntables. Hub tables of this type are used, for example, as so-called hub shuttle systems in order to transport a plurality of components, for example bodies in motor vehicle construction, synchronously, without jolt and bum, from one station to the next. The components are raised synchronously and stored after a horizontal stroke with exact position in the next station again. The horizontal stroke can take place via a link drive and the vertical stroke by a longitudinal drive via a rotary shaft, which also has a groove according to the movement characteristics, in the roller bolt 13 plunge. Just as with the drive of rotating masses, for example on rotary tables, it depends here on a high repeat accuracy with simultaneous exact positioning in the end positions.

How out 2 can be seen, in this embodiment, the drive roller 11 an actuator 16 in the form of a cam associated with the drive roller 11 rotates. The drive roller 11 is in the range of the actuating element 16 from an inductive ring sensor or ring sensor element 17 enclosed, the more than one, for example three, sensors 18 . 19 . 20 are assigned by the actuator 16 be damped. The signals thus triggered are transmitted via a line, for example 21 forwarded to a control or regulating device, in which the motor drive 4 is involved. The control or regulating device is associated with a microprocessor, not shown, in which the signals are processed and / or stored. One recognizes for example 2 the designated α so-called locking angle and with 22 designated zero position as ideal position. Furthermore, switching points with "Fast off" and "Slow off" are shown for the one direction of movement and with the reference numerals 23 and 24 designated.

The thus created inductive measuring system evaluates the positions and transfers them from the integrated microprocessor to the control or regulating device. The processor controls, for example, the motor drive 4 of the turntable 1 or lifting device and generates position messages. During the rotation, for example, the turntable 1 , is within the locking angle α last- and speed-dependent, the electric motor 4 switched off or on again. For "Fast" and "Slow" the separate switching points are like off 2 it can be seen exists. The switching points are self-taught and continuously optimized, for example during load changes or brake wear. They can be "taught in" by a single or multiple activation (so-called teach-in method). If the required switching point is outside the locking angle α, a fault message is output. The control or regulation thus monitors the reaching of the zero position 22 and driving over them. The control or regulation can be used both for reversing and continuous operation. The ring sensor is monitored for wire break or short circuit. In the event of a fault, the outputs are switched off and fault messages are output. The microprocessor stores relevant diagnostic data such as number of cycles, cycle times, rotation breaks, overflows. The data can be called up via a serial interface (not shown).

3 again shows a schematically indicated rotary table control or regulating device 25 , Thus, during the rotation from a load-specific angle before the zero position of the engine 4 off. It is particularly advantageous that with changing operating conditions, even with changing masses to be moved, by one or more actuation of the switching points, the device and the inductive measuring system are "self-learning" and "remember" the positions. If changed operating conditions occur, these switching and measuring points can be changed as desired, so that such an inductive measuring system can be used practically for all turntables with a division of two or six, which leads to a minimization of purchased parts. A PLC can be integrated into the control or regulation system. It is also important that wrong turntable controls are prevented by the user, since the controller or control the drive 4 switches off directly. The control system automatically and continuously optimizes the turn-off point of the turntable, even with changing loads.

Moreover, a simple assembly and therefore very low installation costs compared to the prior art is given.

The shift of rotary table functions from the PLC to the control unit results in a reduction of the programming effort in the PLC, which otherwise includes the usual startup bypass in continuous operation.

The control is virtually maintenance- and wear-free, which increases the availability of the entire system.

The turntable type, for example, two, three, four, five or six pitch, can be set via the program interface. Statistical data can be read out via the program interface and thus enable an evaluation of the operating parameters, for example operating hours, number of cycles, cycle times, interruptions, number of overflows or incorrect operations, for example due to masses being moved too fast.

The position inquiry on the turntable plate enables the customer to be offered a category 4 tool query for releasing the individual tools, which contributes to further optimization.

These queries can be wired and evaluated by the customer directly to safety relays or PLC safety inputs.

All in all, the invention can also be used for example for column lifters, in which also drive rollers with drive grooves and locking bolts are used.

The features described in the summary, in the patent claims and in the description and apparent from the drawing features, both individually and in any combination for the realization of the invention may be essential.

LIST OF REFERENCE NUMBERS

1

turntable

2

tabletop

3

casing

4

Drive, electric

5

pulley

6

fan belt

7

pulley

8th

wave

9

slug

10

drive roller

11

drive roller

12

drive groove

13

roller pins

14

bearing section

15

bearing balls

16

actuator

17

Ring sensor element, ring sensor

18

sensor

19

sensor

20

sensor

21

management

22

Null position

23

Quick-off

24

Slow-off

25

Turntable control or regulating device

α

Rest angle

Claims (20)

Device for moving masses by means of a shaft or roller ( 10 . 11 ), which via a motor drive ( 4 ) drivable and can be braked to a standstill in predetermined angular positions and again driven, with an inductive measuring system ( 16 . 17 ) at which the shaft ( 10 . 11 ) an actuating element ( 16 ) associated with an inductive ring sensor element ( 17 ) attenuates the one or more inductive position transmitter or Sensors ( 18 . 19 . 20 ), which of the ring sensor element ( 17 ) signals are forwarded to at least one microprocessor, the or in a control or regulating device ( 25 ) is or are, the signals to the motor drive ( 4 ), the inductive measuring system ( 16 . 17 ) is self-learning, ie programmable, by triggering a desired rotational position once or several times, whereby the inductive measuring system ( 16 . 17 ) a zero position ( 22 ), wherein the ring sensor element ( 17 ) the wave ( 10 . 11 ) with the actuating element ( 16 ) is enclosed with gap spacing, wherein software parameters which can be tuned to the respective customer request are programmable and storable in a black box assigned to the device, the ring sensor element ( 17 ) is assigned to the black box functionally and wherein the black box receives input signals from the inductive sensor or the inductive sensors as an analog value or as a serial signal and the zero position ( 22 ) as well as direction of rotation and rotational speed of the shaft ( 10 . 11 ) detected. Device according to claim 1, characterized in that the inductive measuring system ( 16 . 17 ) the setting of two switching points, namely a switching point before the zero position ( 22 ) and one after the zero position ( 22 ), and that the switching points represent limits. Apparatus according to claim 1 or 2, characterized in that the direction of rotation of the shaft ( 10 . 11 ) is storable. Device according to one of claims 1 to 3, characterized in that the rotational speed of the shaft ( 10 . 11 ) is storable. Apparatus according to claim 4, characterized in that the rotational speed in the shaft ( 10 . 11 ) in which at least one microprocessor can be stored. Device according to one of claims 1 to 5, characterized in that cycle times can be detected and stored. Device according to one of claims 1 to 6, characterized in that a number of emergency stops can be detected and stored. Device according to one of claims 1 to 7, characterized in that fast and slow cruises are automatically controlled or regulated. Device according to one of claims 1 to 8, characterized in that the black box with the inductive measuring system or parts thereof forms a structural unit. Device according to one of claims 1 to 8, characterized in that the at least one microprocessor with the black box and / or parts of the inductive measuring system forms a structural unit. Device according to one of claims 1 to 10, characterized in that the inductive measuring system or parts thereof are arranged with the at least one microprocessor and / or the black box on elements of a turntable or a lifting device and the signals by remote transmission via electrical lines or telecommunications to a Control or regulating device can be forwarded. Device according to one of claims 1 to 10 with a turntable ( 1 ) with a stepper motor drive ( 4 ), with a through roller bearings ( 15 ) rotatably on a housing ( 3 ) mounted tabletop ( 2 ), of whose underside a plurality of evenly spaced angularly arranged on the same diameter as a roller bolt ( 13 ) formed drive bolts which protrude into a drive groove ( 12 ) in a housing ( 3 ) mounted, motor-driven, designed as a drive roller roller ( 10 . 11 ), wherein the course of the drive groove ( 12 ) the characteristics of Bescheunigung, rotary motion, standstill position and rotational movement of the table top ( 2 ), wherein the drive roller ( 10 . 11 ) the actuating element ( 16 ) associated with the drive roller ( 10 . 11 ) with annular gap enclosing, inductive ring sensor ( 17 ) forms the inductive measuring system which stores this position or positions in the at least one microprocessor by activating predetermined positions one or more times, these positions being transmitted as signals to the control or regulating device ( 25 ) for the motor drive ( 4 ) of the drive roller ( 10 . 11 ) are forwarded. Apparatus according to claim 12, characterized in that the inductive measuring system ( 16 . 17 ) automatically represents switching points with automatic wear adjustment and automatic load-dependency control in the control or regulating device. Apparatus according to claim 12 or 13, characterized in that the at least one microprocessor is a statistical monitoring of the turntable ( 1 ) with regard to cycle times, rotational speed, number of emergency stops, number of switching operations from fast to slow driving and vice versa. Device according to one of claims 12 to 14, characterized in that the inductive measuring system ( 16 . 17 ) recorded with a micro memory steadily the rotational movement of the drive roller and the Setting limits before and after an ideal zero position allows. Device according to one of claims 12 to 15, characterized in that the zero position ( 22 ) is given when the drive roller ( 10 . 11 ) within a predetermined locking angle (α), wherein the ideal zero position in the middle of the locking angle (α), and that at a deviation of more than five degrees from the ideal zero position of the switching point to turn off the rotational movement by control or regulation automatically correctable is to the ideal zero position in the middle of the locking angle at the next rotation of the drive roller ( 10 . 11 ) to reach again. Device according to one of claims 12 to 16, characterized in that the control or regulating device ( 25 ) of the turntable ( 1 ) receives a direction-dependent start signal from a higher-level control or regulation if the turntable ( 1 ) ("Forward On" or "Backward On") and additionally receives a signal when the turntable ( 1 ) should turn in slow motion ("Slow on"), whereupon for the control or regulating device ( 25 ) of the turntable ( 1 ) for the respective direction driving permits (no overflow, position forward / back not yet reached) are verifiable, wherein, if driving clearance, the turntable ( 1 ) and when leaving the locking angle an output ("in position") of the control or regulating device ( 25 ) is switched off. Device according to one of claims 12 to 17, characterized in that with shutdown of the rotary table movement upon reaching a previously calculated switching point, an output ("forward start" or "reverse start") of the control or regulating device ( 25 ) is switched off, wherein at turntable movement zero and when the drive roller ( 10 . 11 ) is located in the locking angle (α) of the control or regulating device ( 25 ) an output ("in position") and when crossing the locking angle (α) another output ("overflow front" or "overflow back") can be switched on. Device according to one of claims 17 or 18, characterized in that the start signal ("forward on" or "backward on") can be switched on during the entire turntable movement. Device according to one of claims 15 to 19, characterized in that at the first start-up or after a device replacement, the turning off the rotational movement with a default value of ten degrees for the high-speed drive and five degrees for the slow speed before the ideal zero position is feasible, and that by the difference between the ideal zero position of each turntable ( 1 ) specific switching point for switching off can be determined and stored.

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