Connecting equipment
By introducing programmable interfaces and redundant inspection mechanisms into inductive transmission components, the programming complexity problem between different electrical instruments is solved, delay-free operation and stable monitoring of the chuck are achieved, and the safety and efficiency of the processing process are improved. .
Patent Information
- Application Number
- CN201910852521.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2018-09-10
- Filing Date
- 2019-09-10
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2039-09-10
AI Technical Summary
The existing induction transmission components require complex customer-specific programming when applied between different electrical instruments, resulting in the chuck not being able to be put into operation directly, delaying the start of the machining process.
A connecting device is designed to detect the operating status of clamps and motors through a programmable interface with the measurement sensor, and compare it with the stored data to generate data groups to realize the delay-free operation and monitoring of the chuck, and support redundant inspection to Ensure the stability of the processing process.
The chuck is connected and operated without delay with the customer-specific control equipment, which reduces programming work, improves the stability and safety of the processing process, and avoids delays and failures caused by programming complexity.
Smart Images
Figure CN110888399B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a coupling device according to the invention, in particular for a man-machine interface for operating an inductively operated chuck. Background Art
[0002] For example, document EP3028804B1 discloses such a transmission assembly, in particular for energy and / or signal transmission and for use in machining centers or turning and / or milling. Here, signals and voltages are inductively transmitted from a fixed machine support (Gestell) to a rotating machining center, in particular a chuck, both in the direction of the chuck and in the reverse direction. The corresponding machining center or chuck has a component, in particular a clamp, which is supported in a disk body (Futterkoerper) in a movable or movable manner by means of an electric motor. The motor is then switched off for safety reasons when the preset actual position is reached, and the clamp is stopped by means of a spring assembly and a mechanical friction brake. Accordingly, the motor presses the spring assembly together during the clamping process so that it applies a clamping force to the clamp. After the motor is switched off, the mechanical friction brake prevents the clamp from slipping or loosening.
[0003] Furthermore, the position of the clamping jaws must be permanently monitored during the machining process, since the clamping jaws center the workpiece to be machined in a fixed manner in space, and if the position of one of the clamping jaws changes during the machining process, machining defects or even loosening of the clamped workpiece may occur. In order to be able to permanently monitor the respective operating state and position of the clamping jaws or the motor (which is mounted in the body of the chuck), these components are associated with a large number of measuring sensors, which generate the respective measurement data and which are transmitted by them via an inductive transmission device (which is designed in two parts, namely on the one hand in the rotating chuck and on the other hand in the fixed support frame). The two transmission devices are to be oriented accordingly in alignment with each other, so that the chuck can be rotated and at the same time can transmit voltages and / or measurement data, measurement signals for the operation of the motor by means of the spatial separation of the two transmission devices.
[0004] Although such inductively operated transmission components have proven themselves in practice, it has been found that each user of such machining centers uses different electrical devices, so that each application requires customer-specific reprogramming. As a result, the chuck cannot be put into operation directly; instead, time-consuming and complex programming work is required to set up an interface between the chuck and a control device to be operated by a human. Summary of the invention
[0005] The object of the present invention is therefore to provide a coupling device of the type mentioned at the outset, in particular for an inductively operated chuck, by which the full operation of the chuck and its monitoring during the machining process can be achieved without delay after the control device present on the customer side is coupled to the chuck, independent of customer-specific electrical instruments.
[0006] This object is achieved according to the invention.
[0007] Further advantageous developments of the invention emerge from the description.
[0008] Since at least one programmable interface is provided between the second inductive transmission device and the control device (which is electrically connected to the second inductive transmission device and the control device), each interface has one or more command and control programs (via which the chuck is implemented or optionally regulated by the control device), a plurality of measuring sensors associated with the tongs, the motor and / or the chuck are provided (via which their operating states are detected and transmitted to the corresponding interfaces), a comparison between actual data stored in the command programs and measured data determined by the measuring sensors is implemented via the corresponding interfaces, and a data set is generated by this comparison of the selected operating state of the chuck with the actual operating state (which is evaluated by the corresponding interface and transmitted to the control device, the tongs or the motor of the chuck), the chuck can be connected to a customer-specific control device without programming effort and can be operated without delay, since the command data and monitoring values required for the control and monitoring of the chuck are provided by the interface both in the direction of the control device and in the direction of the chuck after it has been connected to the second inductive transmission device and the control device. Thus, on the manufacturer's side, the chuck and the programmable interface can be assembled and connected together accordingly and as soon as the chuck with the interface has been delivered to the respective customer, it is possible to connect the control device to the corresponding interface, whereby the chuck can be operated without delay, without the need for time-consuming and complex programming work or the adaptation of the respective customer-specific control device to the chuck provided.
[0009] A multitude of measuring sensors are associated with the chuck, the clamps and / or the motors by which the corresponding clamps are moved and fixed in their clamping position, by means of which position, force curves and / or other measurement data necessary for the operation of the chuck are permanently generated. Accordingly, the operating state of the chuck and its components is monitored and measurement data sets are generated, which are transmitted from the chuck or its corresponding measurement sensors to the interface via the two inductive transmission devices. The interface processes the obtained measurement data sets and compares them with stored data sets, which correspond to the selected operating state of the chuck. If the measured data set should correspond to the stored data set, the corresponding interface transmits this result to the control device, so that the actual machining process can be released, because the chuck accurately centers the workpiece to be machined.
[0010] It is often necessary to redundantly check the comparisons determined by the interfaces, so that it is particularly advantageous if a second interface is provided, by which a measurement data set is generated by the measuring sensor independently of the first interface and compared with a stored command program. If the measurement data sets determined by the comparison by the two interfaces are consistent, this information is transmitted to the control device and the clamping state of the chuck is accordingly checked and can be introduced into the machining process.
[0011] The respective user of the coupling device according to the invention only has to select via the control device which of the stored operating states should be used for the applied chuck and what clamping force should be applied to the workpiece to be processed by the clamp. The respective user therefore only has to make a selection and adjust the clamping force. Accordingly, the interface provided by the manufacturer of the chuck can be connected to any control device of the customer and communicate with it accordingly. The actual evaluation of the determined measurement results and the comparison of the stored data sets with the actual operating state of the chuck are only carried out in the interface. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawing shows a coupling device which will be described in more detail below.
[0013] Figure 1 A schematic diagram showing two chucks connected to a control device via an interface,
[0014] Figure 2 Shown according to Figure 1 A magnified view of the interface and
[0015] Figure 3 Shown according to Figure 1 Redundancy check of the functional mode of the interface. DETAILED DESCRIPTION
[0016] from Figure 1A coupling device 1 is shown, by which a chuck 2 is to be connected to a control device 11 on the customer side and monitored. The chuck 2 serves to hold a workpiece 3 to be processed in a centered manner in space while it is processed by a machine tool (Werkzeugmaschine) (not shown). The chuck 2 consists of one or more clamps 4, which can be moved radially in the direction of the workpiece 3, so that the diameter surrounded or formed by the clamps 4 can be changed, in order to remove the workpiece 3 from the chuck 2 or fix it in a directional position. The clamps 4 are held movably in guide grooves 5 and are driven by electric motors 6 associated with them.
[0017] In order to supply the motor 6 with the necessary voltage, a first transmission device 7 is provided in the chuck 2, which is connected to the motor 6 and a plurality of measuring sensors 22 via electrical lines 13. The position of the chuck 4 and the voltage of the motor 6 or its rotation (Umdrehung) are measured by the measuring sensors 22. Other measurement data necessary for the operation of the chuck 2 are also detected by the measuring sensors 22 and transmitted to the first transmission device 7.
[0018] Since the chuck 2 rotates during the machining process, it is spatially spaced apart from the machine or supporting frame 10. The frame 10 is associated with a second transfer device 8, which is arranged aligned with the first transfer device 7 of the chuck 2. An air gap is thus created between the two transfer devices 7, 8, so that the chuck 2 can be moved relative to the frame 10. Due to the inductive transmission between the two transfer devices 7, 8, the measurement data determined by the measuring sensor 22 and the voltage required for the operation of the electric motor 6 can be transmitted between them accordingly. Thus, the data sets input at the control device 11 can also be transferred to the chuck 2.
[0019] The second transmission device 8 is connected to a programmable interface 21 by means of an electrical line 13. The respective interface 21 is connected to the control device 11 by means of an electrical line 13.
[0020] exist Figure 2 The design of the programmable interface 21 can be seen schematically in FIG. The interface 21 has a plurality of command planes, namely motion, control and safety. These command planes are used to control and permanently monitor the chuck 2. In particular, the position of the tongs 4 and the voltage at the motor 6, which is permanently determined by the measuring sensor 22, are transmitted to the interface 21 and evaluated by it.
[0021] A plurality of operating data sets for the corresponding chuck 2 are stored in the interface 21. The corresponding user selects one of the stored operating programs via the control device 11 and further adjusts the desired clamping force at the control device 11, which is transmitted by the control device via the interface 11 to the corresponding motor 6. Once the adjustment parameters are selected or set, the motor 6 is activated via the interface 21 so that the tongs 4 moves in the direction of the workpiece 3 to be processed. These motion states or processes of the tongs 4 and the motor 6 are stored in the command plane action. If these processes are consistent with the stored data sets, it can be determined via the interface 21 that these motion processes correspond to the stored motion processes, thereby performing a first safety release (Sicherheitsfreigabe).
[0022] As soon as the gripper 4 reaches its clamping position (which can be determined, for example, by an increase in the voltage at the motor 6 via the measuring sensor 22), the motor 6 is switched off and fixed so that the gripper 4 is no longer movable but is immobilized. These operating states are stored in the command plane control and the measurement data permanently detected by the measuring sensor 22 during the clamping state are compared with the stored measurement data in the corresponding interface 21. If there should be no corresponding deviation between the stored data set of the operating state and the actual data set of the operating state, an additional safety release is performed via the interface 22 so that the machining process is not interrupted or can be released while the gripper 4 is being advanced.
[0023] In order to ensure that the functioning of the chuck 2 is monitored during the machining process, a further command level safety is provided in the interface 21, by which in particular the mechanical friction brakes are monitored. These friction brakes monitor the locking of the clamp 4. The motor 6 is switched off after reaching the clamping position - the motor 6 presses the spring assembly together during the clamping process, which then applies the necessary clamping force to the clamp 4. These measurement data can therefore also be detected via the corresponding interface 21 and transmitted to the control device 11.
[0024] The measurement data permanently determined by the measuring sensor 22 are compared with the stored operating state data sets and as soon as a correspondingly predefined deviation should exist, the corresponding interface 21 generates a corresponding control signal, whereby the machining process is interrupted by the control device 11. As long as the acquired measurement data set corresponds to the stored operating state in the form of the corresponding data set, the machining process is not disrupted and can continue.
[0025] exist Figure 32 shows redundant monitoring of the chuck 2, since two interfaces 21 are electrically coupled to the second inductive transmission device 8. Two of the interfaces 21 independently of one another acquire the measurement data sets of the measuring sensor 22 and evaluate them independently of one another. The two interfaces 21 are electrically connected to one another and once a comparison between the acquired measurement data sets and the stored operating states has been performed, the interfaces 21 communicate with one another and if their measurement results or comparisons agree, the control device 11 receives a release signal so that the machining process can be initiated, since the chuck 2 is oriented in its clamping position.
[0026] If, however, the measurement results or the comparisons should deviate from one another in the two interfaces 21, the machining process is interrupted or cannot be started because there may be a malfunction in the chuck 2 or its jaws 4 or the motor 6. Such a malfunction must first be checked.
[0027] The two connected interfaces 21 increase the safety for the operation and adjustment of the clamping plate 2 , and they have a redundant safety-increasing function. The two interfaces 21 operate independently of one another and receive the measurement data determined by the measuring sensor 22 .
Claims
1. A coupling device (1) for operating a man-machine interface (21) for an inductively operated chuck (2), the coupling device (1) comprising: - an inductively operated chuck (2) for centering a workpiece (3) to be machined in space with at least one movable clamp (4), - an electric motor (6) connected to each of the clamps (4) in a drivable manner, the electric motor being installed in the chuck (2) and by means of which each clamp (4) is driven or fixed, - a first inductive transmission device (7) associated with said chuck (2), - a carrier support or machine support (10) spatially separated from the clamping plate (2), a second inductive transmission device (8) associated with the support (10), which is arranged in the region of the first inductive transmission device (7) of the chuck and inductively exchanges measurement signals and voltages with the first inductive transmission device and an external control device (11), through which the command data and monitoring data required for the operation and adjustment of the clamp (4) and for the operation and stopping of the electric motor (6) can be input and / or can be read, in, - at least one programmable interface (21) is provided between the second inductive transmission device (8) and the control device (11), the interface being electrically connected to the second inductive transmission device (8) and the control device (11), - each interface (21) has one or more command programs and control programs, by means of which the adjustment of the chuck (2) by the control device (11) is realized or can be selected, - a plurality of measuring sensors (22) associated with the clamp (4), the motor (6) and / or the chuck (2) are provided, and the operating states of the clamp (4), the motor (6) and / or the chuck (2) are detected by the measuring sensors (22) and transmitted to the corresponding interfaces (21), - a comparison between the actual data stored in the command program and the measurement data determined by the measurement sensor (22) is carried out via the corresponding interface (21), - generating a data set by comparing the selected operating state of the chuck (2) with the actual operating state, said data set being evaluated by the corresponding interface (21) and transmitted to a control device (11) of the chuck (2), the tongs (4) or the electric motor (6), and - a data set about the clamping force of the clamp (4), the operating state of the electric motor (6) and the movement and position of the clamp (4) is stored in the corresponding interface (21) and the data set is permanently compared with the measured data detected by the measuring sensor (22).
2. The coupling device according to claim 1, characterized in that: The two interfaces (21) carry out a comparison independently of one another between the actual operating state of the clamping plate (2) and a preset operating state.
3. The coupling device according to claim 2, characterized in that The interfaces (21) are connected together so that the corresponding results can be compared with each other.
4. The coupling device according to claim 3, characterized in that The release of the start of a machining process or the shut-down of a machining process is monitored and predefined via the interface (21), so that the machining process is automatically interrupted if the data sets diverge between the two interfaces (21) or is released if they match.