Installation and method for producing at least one useful part from a glass pane

Abstract

The present invention relates to an apparatus for producing at least one useful component (N) from a glass plate (G) by means of processing steps including cutting, fracturing, and grinding. The apparatus comprises a cutting device having at least one cutting tool, a fracturing device having at least one fracturing tool, a grinding device having at least one grinding tool, a measuring device for generating a measuring signal including at least one of a first measuring variable and at least one of a second, third, fourth, and fifth measuring variables, and a control device (100-103) capable of receiving the measuring signals to form measuring data from the measuring variables. The control device is capable of detecting individual measuring variables during the execution of one of the processing steps, or specifying a process parameter of at least one component of the apparatus, or defining a state parameter of at least a portion of the glass plate. The control device is configured to generate correction signals based on the measuring data, which, during and / or in subsequent processing of the glass plate and / or useful component, enable adaptive control of at least one apparatus using these correction signals.

Description

[Technical Field]

[0001] Field of Invention

[0002] The present invention relates to an apparatus for producing at least one useful component from a glass plate by means of processing steps including cutting, breaking and grinding operations. [Previous Technology]

[0003] Background of the Invention

[0004] Such equipment is known, for example, from patent application EP 1 647 534 A1 by the same applicant. Continuous optimization and monitoring of this equipment, such as regarding optimal possible product quality (e.g., glass size, grinding profile shape and surface), long tool life (e.g., grinding wheel), short cycle time, or reduced energy consumption, is almost entirely the responsibility of the operator. Due to the extreme complexity of the technical relationships and interactions, operators cannot fully utilize the equipment's potential. The quality of the glass as a final product can only be determined during continuous production after the entire process chain has been completed through "manual" evaluation and measurement. Conclusions regarding the observed causes of failures are either possible or impossible to obtain with considerable experience.

[0005] US 2006 / 0232403 A1 discloses an apparatus for producing glass ribbons from molten glass, wherein the glass ribbon is continuously divided into glass plates by score cutting and fracturing. Sensors are used to detect sound during the score cutting and fracturing process. Each glass plate represents a unit, which must be further processed by dividing and grinding to obtain a final product with the desired quality. This US application does not disclose any details regarding these further processing steps. [Summary of the Invention]

[0006] Summary of the Invention

[0007] Accordingly, one object of the present invention is to describe an apparatus and method for producing at least one useful component from a glass plate with improved operation.

[0008] This objective is achieved by means of the apparatus as described in claim 1 and the method as described in the standalone method claim. Preferred embodiments of the apparatus and the method are described in detail in a separate claim.

[0009] By detecting a first measurement variable that can be detected during the execution of one of the processing steps, and by including at least one other measurement variable, the control device can influence the ongoing processing, a subsequent processing step, and / or the processing of the glass plate and / or useful parts through a corresponding evaluation. Other measurement variables can be detected, for example, during the execution of the same or another processing step, wherein the first measurement variable can be detected, and / or at least one processing parameter can be specifically specified for a processing step, and / or can be detected outside the scope of a processing step, i.e., before and / or after a processing step. In this way, measurement variables from different processing procedures can be better correlated.

[0010] The apparatus and / or method preferably have one or more of the following features: l The glass plate and / or useful component is processed in a substantially horizontal position, particularly in at least one of the processing steps including cutting, breaking, grinding, and, if provided, drilling. l The useful component that can be produced can have any profile. The profile can therefore be optionally rectangular or non-rectangular. Thus, a rectangular useful component forms a quadrilateral with right-angled corners. In the case of a non-rectangular useful component, corners and edges of any shape can be provided; in particular, such corners can be rounded. l The control device is configured in such a way that, using the cutting device, in addition to the cutting line intended to produce the profile of the useful component, the glass plate can be configured to have at least one auxiliary cutting line along which the edge region of the glass plate that does not belong to the useful component is separated. l The apparatus is configured to form a control loop during cutting, breaking, grinding, and / or, if provided, drilling. Specifically, the measurement signals provided by these measuring devices can be continuously evaluated by a control device, and in order to repeatedly generate correction signals, the devices operating in the corresponding processing steps can be controlled in an adaptive manner using these correction signals. The at least one cutting tool of the cutting device may include a cutting wheel that is tiltable relative to the vertical axis. The cutting device may include a linear actuator for moving the at least one cutting tool toward and away from the glass plate. The breaking device may include a linear actuator for moving the at least one breaking tool toward and away from the glass plate. The measuring device for generating the measurement signals may include at least one camera for imaging at least a portion of the glass plate and / or the useful component, particularly the edge of the glass plate and / or the useful component. The measuring device is, for example, suitable for generating measurement signals that include measurement variables that are detectable outside the range of a processing step and define a state parameter of at least a portion of the glass plate. For example, the measurement variable can be based on detecting the edge of the useful component, which is part of the glass plate, wherein the detection can occur after cutting and breaking the glass plate and before and / or after grinding the edge of the useful component. The measuring device can be used to perform, among other things, a quality inspection and / or feedback result of the resulting useful component to accommodate further processing of the useful component and / or the processing of a subsequent glass plate and / or a useful component. In a preferred embodiment, the measuring device includes two or more cameras, which can be positioned above the glass plate and / or the useful component.

Implementation Method

[0012] Detailed Description of Preferred Embodiments

[0013] Figure 1-3 shows an example of a device that processes glass plates G at several stations 1-5 to produce useful parts N.

[0014] Viewed in the direction of the processing operation, the equipment comprises the following consecutive stations: l First station 1 for conveying the glass plate G to be processed, which in this case includes a material rack 10; l Second station 2 for cutting and breaking the glass plate G, which in this case includes a machine 20 used as both a cutting device and a breaking device; l Third station 3 for grinding the edges of the useful parts broken from the glass plate G, which in this case includes a machine 50 with a grinding device; l Fourth station 4 for drilling at least one hole in the ground useful parts, which in this case includes a machine 70 with a drilling device; and l Fifth station 5, which is capable of conveying the completed useful parts N away from there.

[0015] Depending on the design of the equipment, one or more stations 1-5 can be integrated into a single machine. Alternatively, multiple individual stations 1-5 can be provided.

[0016] A conveying device 90 is used to convey the glass plate G or the useful component N between the individual stations 1-5. In this case, the conveying device has a longitudinal support 91 and a receiving device 92 movably arranged thereon. The longitudinal support 91 is fixed to a support device 93 resting on the ground. The receiving device 92 has a vertically movable rack, which has, for example, one or more suction cups capable of holding the glass plate G or the useful component N. The rack is also capable of pivoting about one or more axes.

[0017] In Figures 1-3, in each case a receiving device 92 is provided, which can move back and forth between two adjacent stations 1-5. However, the number of such receiving devices 92 may also be different from that shown here and may be one, two, three or more.

[0018] In Figures 1-3, the control devices 100-103 are indicated to have a central controller 100 and associated individual controllers 101, 102, 103 for controlling the respective machines 20, 50, 70, a barrier 110 surrounding the equipment, for example in the form of a safety fence to prevent unintentional entry by personnel during processing operations, and an operator terminal 120 located outside the barrier and connected to the central controller 100.

[0019] Figure 4 shows in more detail the machine 20 for cutting and breaking the glass plate G. The machine has a frame 21 on which an annular conveyor belt 22 is arranged and a bridge 23 that is displaceable in the Y direction. A carriage 24 with a cutting tool 30 and a breaking tool 40 is arranged on the bridge and is displaceable in the X direction.

[0020] The conveyor belt 22 is arranged around the skew rollers 25, at least one of which can be driven. On one hand, the conveyor belt serves as a support surface for the glass plate G during the processing operation, during which time the conveyor belt 22 is stationary. The conveyor belt is configured with holes 22a, through which air can be drawn out by a vacuum pump, thus generating a negative pressure, which holds the glass plate G to be processed in place. On the other hand, the dry conveyor belt 22 can move in the Y direction so as to transport broken glass fragments to an adjacent collection basin 26, such as a pit in the floor or a container (see Figure 1), after the useful component N has been transported.

[0021] On the frame 21, longitudinal rails 27 are arranged on two longitudinal sides, and the bridge member 23 can move along the longitudinal rails, for example by a linear actuator. The bridge member 23 has a transverse rail 28, and the carriage 24 is arranged on the transverse rail 28 so that the carriage can move, for example by a linear actuator.

[0022] The cutting tool 30 and the breaking tool 40 arranged on the carriage 24 can be seen in more detail in Figures 5 and 7. The cutting tool 30 is designed as a cutting wheel fixed in a cutting holder 41, which is rotatable and can be raised and lowered about its longitudinal axis. These movements can be controlled by providing a suitable actuator. A tilting mechanism is also provided, which can adjust the angle between the cutting wheel and the glass surface when following the contour to be cut. The cutting holder 31 has a feed channel 32 through which cutting oil is fed to the cutting tool 30.

[0023] Figure 14 schematically shows one of the tiltable cutting wheels of the cutting tool 30, which is tilted at an angle α from the vertical direction Z.

[0024] During the cutting process (also known as "scoring"), as shown in Figure 5, the cutting tool 30 is positioned on the glass plate G and moved in such a way that the glass plate is configured with at least one scoring line to produce the desired contour K of the useful part N. The cutting process is maintained by adding cutting oil to the cutting tool 30. To make it easier to break the edge region B (also known as the "boundary") later, the edge region can also be configured with auxiliary scoring lines H. The cutting operation thus provides the glass plate G with one or more scoring lines along which stress is introduced into the glass.

[0025] As mentioned above, a tiltable cutting wheel can facilitate the production of a useful component N having at least one internal opening. This opening is defined by a profile located within the area of ​​the useful component N. By tilting the cutting wheel, a notched cutting line can be provided, which, upon breakage, results in a fracture edge that is tilted outwards such that the fractured portion can be lifted away from the useful component N, or tilted inwards such that the useful component can be lifted away from the fractured portion. Therefore, it is possible to provide a useful component having one or more openings on its inner side, particularly an annular useful component whose external and internal shapes can be circular, rectangular, or a combination of curved and straight portions.

[0026] Optionally, an ultrasonic actuator can be provided, on which a cutting tool 30 is mounted, resulting in a greater scratch depth and allowing for higher speeds when producing the scribe lines. Furthermore, conclusions can be drawn regarding the scribe process via the interaction of the glass plate G and / or the scratch process via variations in ultrasonic vibrations (e.g., amplitude, phase, and / or frequency).

[0027] As an alternative to the cutting wheel, or in addition to the cutting wheel, the cutting apparatus can have a laser system for generating a laser beam as a cutting tool. To cut the glass plate G, holes can be drilled along the cutting lines, for example, using this laser.

[0028] Figure 6 shows an example of a glass plate G, which is configured along the contour K with a notch and an auxiliary notch H.

[0029] As also shown in Figures 5 and 7, the fracture tool 40 is held in a fracture retainer 41, which can be raised and lowered by an actuator. A fracture body is provided as the fracture tool 40, which in this case is designed as a fracture ball mounted on the fracture retainer 41 so that it can rotate in all directions.

[0030] It is also understandable to provide other shapes for the fractured body, such as in the form of a roller. The fracture tool 40 can also be designed as a punch that can be tilted so that the angle between the punch and the surface of the glass plate G can be adjusted. Thus, the punch can also apply a force to the glass plate G, and the force does not necessarily act perpendicular to the glass surface. The angle can therefore be controlled, for example, particularly in the fracture direction, and / or if the fracture does not occur in the optimal direction, it can thus be corrected and optimized by the orientation of the punch and / or the magnitude of the angle deviation from the vertical direction, particularly during shape fracture in a dynamic manner to produce a useful component. It is also understandable to provide an ultrasonic actuator on which the fracture tool 40 is mounted. The part of the fracture tool 40 that contacts the glass plate G can be made of various materials, such as metal, plastic, rubber with a certain degree of hardness, etc.

[0031] During the fracture process, as shown in FIG7, the fracture tool 40 descends to apply a torque to the edge region B of the glass plate G. The fracture tool 40 can descend to the edge region B at different points and / or move along the edge region B for a certain distance after descending.

[0032] A fixed surface 42, which is arranged below the conveyor belt 22 and rests on a support surface 43, is used in this case as a mating surface. The fixed surface 42 is designed, for example, as a template, to be shaped to fit the contour K of the useful part N, and can be replaced if necessary. The template 42 can also be attached during the cutting process, see Figure 5.

[0033] It is also understood that at least one movable surface is provided as a mating surface, which supports the useful component N from below during the fracture operation. For example, at least one fracture body can be provided, which is arranged in such a way that it can move in a radial direction on a worktable that can rotate about a rotation center. Thus, the lower fracture body can move in the plane and be positioned below the conveyor belt 22 according to the respective positions of the fracture body 40, so that a torque can be applied on the edge region B in order to support the glass plate G in such a way as mentioned above.

[0034] However, the fractured body beneath the conveyor belt 22 does not necessarily have to be present. For example, a hard or soft substrate can be provided.

[0035] The fracture body 40 can be designed in such a way that it not only contacts the glass plate G at a single point, but also contacts the glass plate G along a line and / or a plane. In order to align this linear or planar contact surface in a targeted manner during the fracture process, the fracture body can be configured to tilt about one or more axes.

[0036] The breaking tool 40 does not necessarily need to have a fracture body or other mechanical object. A device for heating and / or cooling the glass plate G can also be used as a breaking tool. For example, the device can be used to create at least one structure as a breaking tool, which is in the form of liquid, gas, and / or light. Specific embodiments of the device include the application of cooling sprays, CO2- and / or N2- lasers. The device can be configured to be used as both a cutting tool 30 and a breaking tool 40.

[0037] Figure 8 shows an example of the useful component N broken off from the glass plate G according to Figure 6.

[0038] The edge of the useful component N, which is the surrounding area between the upper and lower sides of the useful component N, is ground at a subsequent station. Figures 9 and 10 show in more detail the machine 50 used for this purpose. The machine includes a grinding table 51, which is rotatable about a rotation center, and a grinding tool 60, which is rotatable along a linear axis, which is in this case the Y-axis, as indicated by the double arrow 60a. The feed of the grinding tool 60 is, for example, in a path- and / or force-controlled manner. The grinding table 51 includes a support 52 formed by one or more suction cups 53, on which the broken glass plate N rests during the processing operation and is held in place by the suction cups 53. For this purpose, a negative pressure can be generated by a vacuum pump 54.

[0039] The machine also includes an electric motor 55 for driving the grinding tool 60. The electric motor 55 and the grinding tool 60 are arranged on a carriage 56, which can be moved along a track 57, which acts as a guide, by a drive 58. In this case, the electric motor 55 is designed, for example, as a spindle motor to rotate the grinding tool 60. The grinding tool is designed, for example, as a single-piece or multi-piece grinding wheel. The shape of the grinding wheel 60 is selected in such a way that the edge of the glass plate N has a desired profile due to the grinding operation. In FIG. 10, the grinding wheel 60 has a profile with a single groove 60b. The grinding wheel 60 can also be designed to have two or more identical or different profiles, and can be used optionally by vertically moving the grinding wheel 60 so that the desired profile is positioned at the edge to be machined.

[0040] The grinding tool 60 is fixed to a grinding spindle 61 and surrounded by a housing 62, which uses a splash guard to supply coolant, such as cooling water. The housing 62 has a continuous slot 62a on its side through which the edge region of the useful part N protrudes into the housing and thus can be machined by the grinding tool 60. The housing 62 also has an internal channel 62b through which coolant can be supplied to the grinding tool 60. The coolant can accumulate at the bottom of the housing 62 and in this case can be drawn by a suction device having a suction pipe 64 and a cyclone separator 63.

[0041] A cooling device 65 can be provided for cooling the electric motor 55 and / or the grinding spindle 61.

[0042] In the machine 50 shown herein, the spatial positions of both the support member 52 and the grinding tool 60 are changeable. To achieve relative movement between the useful component N and the grinding tool 60, the following embodiments are also understandable: l The support member 52 is fixed, and the grinding tool 60 is arranged such that it can move around the edge of the useful component N. l The grinding tool 60 is fixed while the support member 52 is movable, allowing the edge of the useful component N to move through the grinding tool 60.

[0043] In the case of the machine 50, it is also possible to provide more than one grinding tool 60 so as to be able to grind the useful part N at multiple locations simultaneously and / or to be able to grind multiple useful parts N simultaneously.

[0044] Figure 11 shows an example of the edge region of the edge E of a broken glass plate. The edge of the glass plate is only ideally right-angled and smooth, as shown here. Typically, the edge E is not necessarily right-angled and may have interruptions, especially at corners and at transitions to the upper or lower side of the useful component N.

[0045] Figure 12 shows the edge region of the glass plate edge E' after the grinding operation. A C-shaped profile of grinding is used as an example here. Any edge profile to be ground is understood to be: rectangular, with chamfers and / or bevels, rounded edges, stepped edges, etc.

[0046] Referring back to Figures 1-3, the machine 70 has at least one drilling tool 71 in the form of a drill bit, by which at least one hole can be drilled in a useful component N, and has a device for supplying and removing coolant. For this purpose, a suction device 72 is shown in Figures 1 and 3. The machine 70 can be configured with two coaxial drilling tools 71, with the useful component N positioned between them to drill from both sides.

[0047] An ultrasonic actuator for holding the useful component N can be provided on the holder to cause the holder to oscillate. This allows for an increase in the drilling speed. Simultaneously, it can improve the accuracy and / or fineness of the drilled surface and the service life of the drilling tool 71. Measuring device

[0048] To allow for a more optimized process flow, the system includes a measuring device that provides measurement signals at different locations and at different times within the equipment. These measurement signals define specific measurement variables for each of the individual machines 20, 50, 70 and the glass plate G / useful component N, and can be processed by control devices 100-103 to form correction signals. These signals affect the process flow of the glass plate currently being processed or subsequently processed into a finished glass plate.

[0049] To generate such measurement signals, a sensor arranged in a fixed and / or movable manner may be provided. The measurement signals may also be signals including a measurement variable that, when a processing step is performed, specifically specifies the process parameters of at least one component of machines 20, 50, and 70.

[0050] Sensors 129, 130, 136, 137, 170-172, and 180 are shown by way of example in Figure 2. Individual sensors 129 and 130 are arranged between two adjacent stations 1-5. For example, a sensor 129 can be arranged on the longitudinal support 91. A sensor 130 can be arranged such that it is supported on the ground. Individual sensors 129 and 130 can analyze the glass plate G or useful component N transmitted via a receiving device 92.

[0051] For example, sensors 136 and 137 are respectively disposed on a receiving device 92. The respective sensors 130, 136, and 137 are used, for example, to generate a measurement signal including a measurement variable that defines a state parameter of at least a portion of the glass plate G. Measurements by sensors 136 and 137 can be performed before the glass plate G or the useful component N is picked up by the receiving device 92. In this case, the receiving device 92 can be moved relative to the glass plate G or the useful component N. Alternatively or additionally, the measurement can be performed when the glass plate G or the useful component N has been picked up by the receiving device 92.

[0052] The sensors 170-172, 180 are arranged on the machine 70 for drilling operations.

[0053] Sensors 131-133 are shown by way of example in FIG4. In this case, a sensor 131 is, for example, arranged in a fixed manner on the machine 20. For example, it is also understandable to provide a sensor that can be attached to the machine 20 from below. Sensors 132 and 133 are arranged on the bridge member 23.

[0054] In addition to sensors 132 and 133, sensor 135 arranged on the cutting tool 30 is shown in FIG5.

[0055] Sensors 152-154 are illustrated in FIG9 by way of example. Sensor 152 is arranged, for example, on the carriage 56 on which the grinding tool 60 is disposed, and has a first sensor portion for analyzing the useful component N before the grinding operation is initiated, and a second sensor portion for analyzing the useful component N after the grinding operation is initiated. Sensors 153 and 154 are fixed to, for example, the chassis of the machine 50 and / or the grinding table 51.

[0056] Sensors 150-152 and 160 are indicated in FIG10. Sensors 150 and 151 are arranged, for example, in a suction cup 53.

[0057] Using this measuring device, measurements can be performed during the execution of a processing step (cutting, breaking, grinding, or drilling) (hereinafter also referred to as "dynamic measurement") and outside the scope of the processing step, i.e., before and / or after a processing step and therefore when the glass plate G or the useful component N is not processed (hereinafter also referred to as "static measurement"). The dynamic measurement is performed in such a way that the time course of a process parameter of at least one component of the device that is in operation during processing, such as the corresponding tools 30, 40, 60, 71, and / or the process parameter of the glass plate G and / or the useful component N, is recorded. The measurement is performed in such a way that it is performed based on the relative position of the tools 30, 40, 60, 71 with respect to the contour K. This allows for the recording and evaluation of these process parameters, except for other things in the case of certain contours, such as in the case of small radii. The static measurement is performed in such a manner that a state parameter of the glass plate G or useful component N and / or at least one tool 30, 40, 60, 71 is recorded.

[0058] a) The following explains an embodiment of dynamic measurement in individual processing steps. Cutting processing steps

[0059] During the cutting operation, one or more of the following measurement variables can be recorded based on time and the relative position of the cutting tool 30 with respect to the profile K: l For example, a measurement variable is recorded based on a measurement of the force exerted by the cutting tool 30 on the glass plate G. This force can be, for example, its normal force and / or lateral force. To measure this force, for example, the pressure on the pneumatic system can be recorded in a pneumatic actuator for raising and lowering the cutting tool 30, and / or the current of such actuators for moving the bridge 23 and the carriage 24 can be evaluated. Alternatively or additionally, a force measurement sensor can be provided, for example, a sensor actuated in a piezoelectric, capacitive, and / or piezoresistive manner. l For example, a measurement variable is recorded based on a measurement of the speed at which the cutting tool 30 moves along the glass plate G. For this purpose, for example, signals can be selected to control the drives for moving the bridge 23 and the carriage 24 for moving the cutting tool 30. Each drive has, for example, a displacement or position measurement system by which position data that can be directly evaluated can be provided. When a tiltable cutting wheel is provided, an additional axis of movement is provided by a tilt angle. A measurement variable based on the tilt angle of the cutting wheel (see angle a in Figure 14) can be recorded. The tilt angle can be adjusted as the cutting wheel moves along a scribe line. For example, the target position of a moving axis of the machine 20 during a specified cutting operation is recorded as the first measurement variable, and the actual position during the cutting operation is recorded as the second measurement variable. The deviation between the actual position and the target position results in a profile error of the moving axis. If these characteristics of the control circuit are known and can be explained mathematically, conclusions about the magnitude and sign of the external force can be drawn, for example, from the profile error. For example, at least one sensor 131 is provided for measuring sound emission as a measurement variable. The sensor 131 can be a microphone, for example, used to detect airborne noise. It is also understood that multiple sensors 131 of the same type are used to detect spatial and / or temporal differences in sound emission. Alternately or additionally, the sensor 131 can be used to detect structural noise and is configured such that it contacts the glass plate G, for example, directly, for example, through a hole in the conveyor belt 22 from above or below, and / or the sensor 131 contacts a component in contact with the glass plate G, such as the conveyor belt 22 or the cutting tool 30. During the cutting operation, the cutting tool 30 produces a sound from its movement on the glass plate G. From the measurement of the sensor, it is possible to identify, for example, whether an undesirable break ("chipping") will occur next to the scratch dividing line at a specific point on the profile K.The measurement of the sound allows the pressure of the cutting tool 30 on the glass plate G to be continuously adjusted, among other things, during the cutting operation process if necessary. For example, the time process of measuring the amount of cutting oil supplied to the cutting tool 30. This can be done, for example, by means of an optical sensor 132 in the form of a camera, see Figure 4, and / or by means of a flow meter sensor. Additionally, or alternately, continuous measurement of the fill level of the cutting oil tank is understandable. At least one sensor 133 is provided, for example, capable of measuring the thickness of the glass plate at different locations. A feeler, for example, is arranged on the carriage 24 to serve as the sensor 133, see Figure 4. The measurement of the glass plate thickness allows, for example, the dynamic adjustment of the pressure of the cutting tool 30 on the glass plate G during the cutting operation. For example, an acceleration sensor 135 is provided for measuring vibration and is arranged, for example, near the cutting tool 30, see Figure 5. For example, an exciter can be provided to excite the cutting tool 30 in, for example, the ultrasonic range, and the time process of the energy required by the exciter can be measured.

[0060] In order to determine the relative position of the cutting tool 30 with respect to the contour K, given the specific measurement variables specified above, for example, it is possible to select and evaluate the controlled drives for moving the bridge 23 and the signals used by the carriage 24 for moving the cutting tool 30 and raising and lowering the cutting tool 30. Fracture processing steps

[0061] During the fracturing operation, depending on the time and the relative position of the at least one fracturing tool 40 with respect to the profile K, one or more of the following measurement variables can be recorded: l For example, a measurement variable based on the force exerted by the fracturing tool 40 on the glass plate G. This force can be, for example, its normal force and / or lateral force. To measure this force, for example, the pressure on the pneumatic system can be recorded in the pneumatic actuators used to raise and lower the fracturing tool 40, and / or the current of the actuators used to move the bridge 23 and the carriage 24 can be evaluated. Alternatively or additionally, a force measurement sensor, for example, a sensor acting in a piezoelectric, capacitive, and / or piezoresistive manner, can be provided. l For example, a measurement variable indicating the position of the fracturing tool 40 in contact with the glass plate G during the fracturing operation and, optionally, its orientation and tilt angle, and / or the speed at which the fracturing tool 40 moves when it contacts the glass plate G. For example, the breaking tool 40 for breaking the edge region B descends onto the glass surface at different points and / or, after descent, moves along the edge region B at a specific speed and along a specific path. For this purpose, for example, the signals used by the controlled actuators for moving the breaking tool 40 can be selected. For example, at least one sensor for measuring sound emission is provided as a measurement variable. For example, sensor 131 or a plurality of sensors 131 can be used as a single sensor. During the breaking process, the movement of the breaking tool 40 on the glass plate G produces a sound. From the measurement of the sensor, it can be identified, for example, when the crack in the glass plate G propagates to the rear side. The measurement of the sound then allows adjustment of the pressure of the breaking tool 40 on the glass plate G, for example, if necessary, during the breaking process. The acoustic measurement also allows the detection of unwanted cracks at a specific point on the profile K, particularly at the transition from the broken edge to the front or back of the glass, as well as other anomalies, and thus inferring quality defects in the broken edge. An optical sensor, such as a camera, can be used to detect how the fracture extends along a notched dividing line and / or how such fragments form at the transition from the fracture edge to the upper side of the glass. For example, an acceleration sensor is provided for measuring vibration. For example, an acceleration sensor in the form of an acceleration sensor 135 can be used for this purpose.

[0062] In order to determine the relative position of the fracture tool 40 with respect to the profile K under the aforementioned measurement variables, for example, signals used by the controlled actuators for moving the bridge member 23 and the carriage 24 for moving the fracture tool 40 can be selected and evaluated. Alternatively or additionally, the position of the fracture tool 40 can be determined by camera recording and by image processing components. Grinding process step

[0063] During the grinding operation, one or more of the following measurement variables can be recorded based on time and the relative position of the grinding tool 60 with respect to the contour K: l For example, a measurement variable is recorded based on a measurement of the force applied by the grinding tool 60 to the useful member N. This force can be, for example, radial and / or lateral and / or can include the torque of the grinding tool 60. For this purpose, for example, the respective currents required by the actuators to move the support 52 and the grinding tool 60 can be measured and evaluated. A force measurement sensor, for example, a piezoelectric, capacitive, and / or piezoresistive sensor, can be provided alternately or additionally. l At least one sensor is provided, for example, which can detect the force applied to the support 52 during the grinding operation. For example, a suction cup 53 equipped with the sensor 150, see FIG10. For example, at least one sensor 151 is provided for measuring sound emission as a measurement variable, as shown in FIG10. The sensor 151 can be used, for example, to detect structural noise and directly contact the useful component N, for example, from above or below, for example, also through a hole in the suction cup 53, and / or the sensor 151 contacts a component that is in contact with the useful component N. Alternatively, the sensor 151 can be a microphone used to detect airborne noise. It is also understandable to use multiple sensors 151 of the same type to detect spatial and / or temporal differences in sound emission. In the case of the machine 50 according to FIG9, it is understandable, for example, to arrange multiple microphone-type sensors 151 on the grinding table 51. During the grinding operation, the movement of the grinding tool 30 on the useful component N generates sound. For example, a measurement variable is recorded based on the measurement result of the energy used to drive the grinding tool 60. For example, the current used to drive the electric motor 55 can be detected. This energy measurement result can be used to detect, for example, the occurrence of a fire during the grinding process.

[0064] Another measurement variable can be based on detecting the vibration of the bearing of the electric motor 55, which is related to specific forces occurring during the polishing process. For example, at least one optical sensor 152 (see FIG. 9) is provided, comprising a camera and / or laser, to detect, for example, at least one of the following parameters: ¡ The translucency (transmittance) of the edge of the glass to be polished and / or polished; ¡ Black spots ("firing") formed on the glass edge due to overheating during the polishing operation; ¡ The cross-section of the glass edge, for example, its position in the Z direction; ¡ The location of the edge damage; ¡ The roughness of the glass edge; ¡ The size of the useful component N; ¡ The spray pattern of the coolant supplied to or removed from the polishing tool 60. Recording measurement variables of the coolant discharged from the polishing tool 60 is also understandable, such as the temperature and / or chemical composition of the coolant. l Provides at least one sensor 153, for example, which measures the vibration and / or sagging of the useful component N during the polishing process, see FIG. 9. The sensor may include a laser, for example, to measure the distance. By measuring the position of the glass edge in the Z direction during the polishing process, the position of the polishing tool 60 in the Z direction can be adjusted by a feedback control. l For example, an accelerometer is provided, which is arranged near the polishing tool 60 and can be used to detect the vibration of the useful component N, particularly the vibration in the Z direction. l Provides at least one temperature sensor 154 (see FIG. 9), for example, an infrared sensor, for example, to measure at least one of the following components during the polishing process: ¡ the edge of the useful component N, ¡ the polishing tool 60, ¡ the coolant supplied to or removed from the polishing tool 60. For example, the temperature of the coolant in the housing 62 and / or in the suction pipe 64 of the cyclone separator 63 can be measured. For example, the state of a temperature indicator in the coolant can be detected in such a way that it changes when a predetermined temperature is reached. In this way, a localized temperature rise in the area between a grinding tool and the useful component can be determined; this area is almost or completely inaccessible. For example, the target position of the axis of movement of the machine 50, specifying a movement during grinding, is recorded as the first measurement variable, and the actual position during grinding is recorded as the second measurement variable. The deviation between the actual position and the target position results in a profile error of the axis of movement. If these characteristics of the control circuit are known and can be explained mathematically, for example, conclusions can be drawn from the profile error regarding the magnitude and sign of an external force. It is also understandable that detecting the current used by the drive to move the grinding tool 60 along the Y-axis, which can indicate an imbalance of the grinding tool 60, is also possible.

[0065] In order to determine the relative position of the grinding tool 30 with respect to the contour K under the aforementioned measurement variables, signals used by the controlled drives for moving the grinding table 51 and the grinding tool 30 can be selected and evaluated. Alternatively or additionally, the position of the useful component N, particularly in the Z direction, can be detected by a laser distance sensor and / or a capacitance sensor. Drilling process steps

[0066] During drilling operations, one or more of the following measurement variables can be recorded based on time and the relative position of the drilling tool 71 with respect to the profile K: l For example, a measurement variable based on a measurement of the force exerted by the drilling tool 71 on the useful component N. This force can be, for example, axial and / or lateral and / or can include the torque of the drilling tool 71. For this purpose, for example, the individual currents required by the actuators to move the drilling tool 71 can be measured and evaluated. A force measurement sensor, for example, a piezoelectric, capacitive, and / or piezoresistive sensor, can be provided alternately or additionally. l For example, at least one sensor 170 is provided for measuring sound emission as a measurement variable, the sensor, for example, contacting the useful component N, see FIG2. During drilling operations, the drilling tool 71 generates sound on the action of the useful component N. l For example, a measurement variable is recorded based on the measurement result of the energy used to drive the drilling tool 71. For example, the current used to power the electric motor of the drill bit can be detected. At least one sensor 171 is provided, for example, to measure the vibration of the useful part N during the drilling process, see Figure 2. The sensor 171 can be, for example, an accelerometer on the drilling tool 71 or a laser position sensor. At least one temperature sensor 172 (see Figure 2) is provided, for example, an infrared sensor, which is used to measure at least one of the following components during the drilling process: ¡ the edge of the useful part N, ¡ the drilling tool 71, ¡ the coolant discharged from the drilling tool 71. It is also understood, for example, that the relative depth of the inner hole is recorded. For example, it is understood that the countersunk hole machining operation is dynamically recorded during the drilling operation by measuring the required current used to drive the drilling tool 71 and the increase during countersunk hole machining, and / or vibration and / or noise, etc. Therefore, the countersunk hole depth can be controlled with extreme precision based on feedback from the drilling tool. Figure 15 shows an example of a drilling tool 71 in the form of a drill bit, which includes a cylindrical portion 71a followed by a collar portion 71b. The drill bit is configured to be hollow. The collar portion 71b, in this example having a truncated conical shape, is used to bevele the hole created by the cylindrical portion 71a. By measuring the current used to drive the drilling tool 71, the different positions of the drill bit relative to the useful component N can be determined: for example, the current increases when the drilling tool 71 contacts the useful component N. A further increase occurs when the collar portion 71b contacts the useful component N. Subsequently, as the collar portion 71b penetrates deeper into the useful component N, the current increases further, typically in a linear manner. Therefore, the length of the cylindrical portion 71a and the initiation of the beveling process via the collar portion 71b can be determined. Furthermore, it can control the depth of the resulting bevel.

[0067] b) The following explains an example of static measurement outside of the processing operation steps. Measurement before the cutting operation.

[0068] Before the cutting operation, one or more of the following measurement variables can be recorded: l At least one optical sensor is provided, for example, which can detect the dimensions of the glass plate G. For this purpose, for example, a sensor 136 in the form of a camera and / or laser is provided at the first station 1 and arranged, for example, on the receiving device 92, see FIG. 2. Alternatively or alternately, a sensor 132 located at the second station 2 can be used. l At least one weighing sensor 137 is provided, for example, which can determine the weight of the glass plate G and is arranged, for example, on the receiving device 92, see FIG. 2. l For example, a temperature sensor is provided on the conveying device 90, for example, to detect any changes in length and, among other things, to correct the position of the glass plate G to be placed on the machine 20. l At least one sensor is provided, for example, which can measure the thickness of the glass plate at different locations. For example, sensor 133 located at the second station 2 can be used for this purpose. At least one sensor is provided, for example, to determine the position of the glass plate G relative to a predetermined coordinate system. For example, one or more sensors 132, 133, 136 can be used for this purpose. If a cutting wheel is used as the cutting tool, at least one sensor can be provided to determine the sharpness of the cutting wheel. Measurement after the cutting operation and preferably before the breaking operation.

[0069] After the cutting operation, one or more of the following measurement variables can be recorded: l Providing at least one optical sensor 132, for example, to detect the shape of the groove forming a notch dividing line, such as the width and / or depth, and / or the geometric position. The geometric position of an auxiliary notch dividing line, particularly the position where it intersects with the notch dividing line defining the profile K, can also be recorded. For example, a camera arranged on the carriage 24 is suitable as the sensor 132, see Figure 4. A device with a light source, such as a laser, can also be used on the carriage 24 to measure reflection. l Providing at least one device, for example, comprising, for example, the optical sensor 132 in the form of a camera, the camera being equipped with a polarizing filter and used to detect mechanical stress in the glass plate G by means of an image processing component. l The optical sensor 132 in the form of a camera can also be used, for example, to detect traces of cutting oil on the upper side of the glass. Measurement after the fracture operation and preferably before the grinding operation.

[0070] Prior to the fracture operation, one or more of the following measurement variables can be recorded: l Providing at least one optical sensor, for example, to detect the shape of the fracture edge of the useful component N. For this purpose, the sensor 132 can be used, for example, in the form of a camera. Alternatively or additionally, a light source, such as a laser, can be used to record the reflectivity of the fracture edge. By measuring the fracture edge, a point of undesirable deviation from the ideal edge, i.e., an edge ideally perpendicular to the upper side of the glass, can be determined. The formation of fragments at the transition point from the fracture edge to the upper side of the glass can also be recorded. l Providing at least one optical sensor, for example, to detect the size of the useful component N. For this purpose, the sensor 132 can be used, for example, in the form of a camera and / or a laser. l Providing at least one weighing sensor, for example, to determine the weight of the useful component N. For this purpose, the weighing sensor 137 located on the receiving device 92 can be used, for example. It is also understandable to analyze the scrap (frame) broken off from the glass plate. Analysis and conclusions about the cutting / fracture process can be drawn based on these broken edges. For example, it can be analyzed whether a long straight edge is broken into a single piece, or whether there are multiple cross-sections, or what the broken edge of the scrap looks like. Measurements are taken after grinding operations and preferably before drilling operations.

[0071] After the grinding operation, one or more of the following measurement variables can be recorded: l The optical sensor 152 is used to detect at least one of the following parameters: ¡ The translucency (transmittance) of the edge of the ground glass, ¡ Black spots on the edge of the glass caused by overheating during the grinding operation, ¡ The surface condition of the glass edge, especially poor grinding patterns, such as skip marks / vibration marks, ¡ The cross-section of the glass edge, ¡ The location of damage to the edge, ¡ The roughness of the glass edge, ¡ The dimensions of the useful component N, especially its size and / or shape. l The roughness of the glass edge can also be detected using a mechanical measuring sensor, laser reflectance measurement, a camera including image processing, and / or a colorimeter. l The dimensions of the useful component N can also be detected by a camera and image processing, a mechanical measuring sensor, calipers, and / or laser distance measurement. l The position of the glass edge in the Z direction can be determined, for example, by the measuring device described below in relation to FIG17. Based on this information, the position of the grinding tool 60 in the Z direction can be adjusted for the useful part N to be ground subsequently. At least one load cell is provided, which can be used to determine the weight of the useful part N to be ground. For this purpose, for example, the load cell 137 located on the receiving device 92 can be used. At least one sensor is provided, for example, which can be used to measure the thickness of the glass plate, for example, at the intended drilling location. For example, a thickness gauge arranged at the drilling station 4 is suitable as a sensor. At least one optical and / or tactile sensor 160 is provided, for example, to detect the geometry of the grinding surface of the grinding tool 60. For example, the grinding tool is designed as a grinding wheel with a specific groove profile. The groove depth, for example, can be detected by the sensor 160, so that the feed of the grinding tool 60 can be adjusted accordingly during the next machining of the useful part N. It is also understandable that the temperature of the grinding tool 60, particularly the pre-set temperature on the grinding wheel body, is measured after the grinding process. As the geometrically undefined cutting edge becomes blunt (visible across multiple glass plates), the proportion of friction increases, resulting in more heat. Measurements after drilling operations.

[0072] After drilling, one or more of the following measurement variables can be recorded: l For example, at least one optical sensor 130 (see FIG. 2) is provided, comprising a camera and / or laser, for example, and detects at least one of the following parameters: ¡ The translucency of the borehole edge in the useful component N; ¡ The profile of the borehole edge, particularly the length of the chamfer; ¡ The location of damage to the borehole edge and borehole. l The roughness of the borehole can also be recorded by a mechanical sensor, laser reflectance measurement, a camera and / or colorimeter including image processing. l The size of the borehole can also be detected by a camera and image processing, a mechanical measurement sensor, calipers and / or laser distance measurement. l At least one weighing sensor is provided, for example, which can be used to determine the weight of the useful component N of the die and the borehole. For this purpose, for example, the weighing sensor 137 located on the receiving device 92 can be used. l provides at least one optical and / or tactile sensor 180, for example, to record the length of the drilling tool 71.

[0073] Generally, at least one sensor, such as an optical sensor, like a camera or laser, can be provided after a processing step to record the dimensions of the glass plate G or the useful component N, the shape of the broken or ground edge, and the shape of any drilled holes. In particular, automated quality control can be performed on the resulting useful component N after the final processing step.

[0074] Figures 17 and 18 show an embodiment of a measuring device configured to sense the front, rear, and edge sides of the glass. For example, the measuring device is used before and / or after the fracture processing step and / or after the grinding processing step. Here, the glass plate and the useful component are processed in a horizontal position. Therefore, the front side of the glass corresponds to the top side of the glass plate / useful component, and the rear side of the glass corresponds to its bottom side. The measuring device may, for example, be positioned on the carriage 56 of the machine 50, located on a separate carriage arranged on the machine 50 and movable, for example, in the Y direction or located on a unit separate from the machine 50. In one embodiment, the measuring device is arranged on the carriage 56 and in front of the grinding tool 60 and in a movable manner relative to the grinding tool 60; for example, the measuring device may be raised or moved in another manner so that it yields to the grinding tool 60 when the grinding tool 60 contacts the glass edge for grinding operations. The measuring device includes the following components: a first camera 152a for imaging at least a portion of the front side and / or edge of the glass; a second camera 152b for imaging at least a portion of the rear side and / or edge of the glass by reflecting light at an angle, here twice the angle of 90 degrees, via a mirror unit 152f; an illumination unit 152g, for example, in the form of ring illumination; a third camera 152c for imaging the edge of the useful component N (or glass plate G); a fourth camera 152d for imaging the edge of the useful component N (or glass plate G); and a laser sensor 152e for scanning the edge of the useful component N (or glass plate G).

[0075] The cameras 152a and 152b are arranged above the front side of the glass, while the mirror unit 152f and the illumination unit 152g are arranged below the rear side of the glass. This arrangement takes into account that when the useful component N is positioned, for example, on the support member 52 of the machine 50, the space below the useful component N is limited. The illumination unit 152g can also be arranged above the front side of the glass.

[0076] The backup system of the laser sensor 152e is optional. It can be omitted or replaced by an additional camera.

[0077] The measuring device may include monitoring components, such as one or more position sensors, to avoid harmful collisions with a portion of the machine 50 and / or the useful component N / glass plate G during movement of the measuring device.

[0078] The components 152a-152e can be arranged on a first carrier and the components 152f, 152g can be arranged on a second carrier, and the two carriers can be connected via a connecting device 152h.

[0079] Preferably, the components 152a-152e are positioned such that they sense the same area on the glass edge and are moved such that the area follows the glass edge as the glass edge rotates.

[0080] The cameras 152a and 152b are designed to detect one or more of the following characteristics: l Splitting (especially debris, microcracks and / or conchoidal splitting) l Location of the fracture edge l Insufficient or excessive fracture l Location of the abrasive edge l Insufficient or excessive abrasion l Fire during abrasion

[0081] A feasible procedure for observing a useful component N arranged on the machine 50 by means of the cameras 152c and 152d is as follows: the useful component N is fixed to the support 52 of the rotatable grinding table 51. During the rotation of the useful component N, the cameras 152c and 152d are moved, for example, linearly, and image the edge of the glass. The effect of equipping two cameras 152c and 152d arranged at an angle is that when the useful component N rotates, one of the cameras 152c or 152d is always substantially positioned in front of the edge of the glass, thereby reducing the distortion of the imaged glass edge and ensuring that the glass edge is adequately illuminated by the illumination unit 152g, as shown in Figures 18 and 19.

[0082] The lighting unit 152g is configured so that the lighting intensity is as uniform as possible even for non-right-angled glass edges.

[0083] Herein, the annular illumination unit 152g is configured to have a diameter as small as possible, so that the useful component N can be supported by the support member 52 near its edge, and the support member 52 is prevented from colliding with the measuring device when the cameras 152c, 152d move. Herein, a laser sensor 152e in the form of a laser position measuring device is provided to scan the glass edge when the glass edge is imaged by the cameras 152c, 152d. In an alternative embodiment, not all components 152c-152e are provided; for example, only cameras 152c, 152d or only laser sensor 152g are provided.

[0084] Instead of the two cameras 152d and 152e that can only move linearly, it is also understood that only one camera 152d or 152e is provided in a rotatable and linearly displaceable manner.

[0085] The measuring device as described can detect one or more of the following characteristics: l The location of the fracture edge, for example, the location in the vertical direction Z l Half-penny type crack l Microcrack l The roughness of the edge l Insufficient and / or excessive fracture l Areas on the edge that were not properly ground, for example, shiners l Fire during the grinding operation

[0086] The sensing accuracy of components 152a-152e is selected depending on the application. In one embodiment, components 152a, 152b, and 152e have a high accuracy within a line-of-sight range of micrometers, for example, 1-2 micrometers. Ideally, the cameras 152a and 152b are arranged perpendicular to the glass surface to capture images that allow for direct measurement of dimensions.

[0087] Cameras 152c and 152d can be cheaper cameras, such as webcams or industrial cameras, and can record images that allow only qualitative observation of edges. In one embodiment, these cameras 152c and 152d are calibrated using calibration images, which are, for example, captured by at least one of these cameras 152a and 152b having increased imaging accuracy. These calibration images can be generated, for example, by imaging a calibration object having a predetermined size, such as a template with precise markings. Once calibrated, these cameras 152c and 152d allow for quantitative measurements similar to those of the more expensive cameras 152a and 152b. Therefore, the latter can be replaced by cheaper cameras, such as cameras 152c and 152d, during calibration.

[0088] To synchronize the images captured by different cameras 152a-152d, a timer can be provided. The time signal supplied by the timer causes each image configuration to have a timestamp, and the controller 102 of the machine 50 records the machine coordinates of the moving components. By combining the data on the timestamps with the machine coordinates, the captured images can be mapped onto the geometry of the glass edge. Thus, the specific features explained above can be located on the glass edge.

[0089] In one embodiment, a cleaning unit is provided for cleaning the edge of the glass before applying the measuring device. This cleaning operation is beneficial when the glass may be contaminated with cutting oil, cooling water, glass dust, or other impurities, which could hinder optical observation by cameras 152a-152d. The cleaning unit is arranged on the machine 50 so that it can be moved relative to the grinding tool in a manner similar to that of the measuring device.

[0090] Positioning the measuring device on the machine 50 allows for monitoring of the cutting, breaking, and grinding processes. The cutting and breaking processes can be evaluated before grinding the useful part N, and the grinding process can be evaluated after grinding the useful part N. These two evaluation steps can be performed without removing the useful part N from the support 52, thereby achieving increased accuracy in the evaluation. Control device

[0091] The measurement signals provided by the measuring device are received and evaluated by the control device 100-103 to form measurement data. The control device is equipped with, for example, an artificial intelligence algorithm that allows the measurement data to be evaluated and one or more correction signals to be formed. During the current processing operation of the glass plate G and / or the useful component N, the control of the machines 20, 50, 70 can be adjusted using the correction signals during the current or subsequent processing operation steps or during subsequent processing operations of the glass plate G and / or the useful component N. The adjustment is based on the relative position of the tools 30, 40, 60, 71 with respect to the contour K.

[0092] Figure 13 schematically shows the process flow of feeding the glass plate G into the process, then: 1. Cutting is performed in processing step B1; 2. Analysis is performed in step A1, which is between processing steps B1 and B2; 3. Fracture is performed in processing step B2; 4. Analysis is performed in step A2, which is between processing steps B2 and B3; 5. Grinding is performed in processing step B3; 6. Analysis is performed in step A3, which is after processing step B3, and then the plate leaves the process as a useful part N. The drilling process and further analysis steps are not shown here, but can be provided after step A3.

[0093] In steps A1-A3 and B1-B3, a measurement signal containing the measurement variables is generated and fed to the control device C as indicated by arrow P1. The control device C, such as control devices 100-103, evaluates the measurement variables and responds to machines 20 and 50 with corresponding correction signals so that processing steps B1, B2, and B3 can be adapted, as indicated by arrow P2.

[0094] In processing step B1, a drive is controlled to cause the cutting tool 30 to move (scene B11 in FIG. 13). This drive can be controlled via a feedback control through the control device. As explained above, sensors can be provided for recording, for example, force, amount of cutting oil, and / or other measurement variables, such as the position of a movement axis of the cutting device, for example, the tilt angle of a tiltable cutting wheel (scene B12 in FIG. 13).

[0095] As explained above, measurement variables can be recorded in step A1, such as the depth of the etched cutting line, the crack at the front transition of the glass, etc.

[0096] In processing step B2, a driver is controlled to move the fracture tool 40 (scene B21 in FIG. 13). This driver can be controlled via a feedback control through the control device. As explained above, sensors can be provided for recording, for example, force, the position of the auxiliary notch cutting line, and / or other measurement variables (scene B22 in FIG. 13).

[0097] As explained above, measurement variables can be recorded in step A2, such as the unevenness of the fractured edges, the damage to the edges (especially conchoidal cracks), the size of the useful component N, etc. For example, the intensity of the conchoidal cracks and the frequency of the conchoidal crack intensity can be determined by covering a specific length of the glass edge. The measurement variables can define further characteristics of the shape of the edge, wherein the fractured useful component N has the presence of, for example, half-penny cracks, particularly their shape, frequency and depth, and / or microcracks and / or the angle of the edge (over-fracture or under-fracture) and / or unwanted protrusions. These measurement variables can be used to adjust the parameters for the cutting operation so that, for example, half-penny cracks with desired characteristics are produced.

[0098] In processing step B3, a drive is controlled to move the grinding tool 60 and the support 52 (location B31 in FIG13). These drives can be controlled by the control device C via feedback control.

[0099] As explained above, measurement variables, such as power consumption, force, vibration, sound, temperature, etc. of the drive, can be recorded in step B3 (Field B33 in Figure 13).

[0100] As explained above, measurement variables can be recorded in step A3, such as the shape and location of the grinding edge, the roughness of the edge, damage to the edge (especially conchoidal cracks, scratches), the size of the useful component N, etc. Measurement variables can define further characteristics of the shape of the grinding edge, such as the presence of areas that were not properly ground and traces of fire, especially areas of molten glass generated due to overheating during the grinding operation.

[0101] The measuring device described above with respect to FIG17 can be applied in step A2 and / or A3 and also in step A1 when configured so that it can sense the glass plate on the machine 20.

[0102] The control device C is preferably equipped with an artificial intelligence-based algorithm, particularly an algorithm for machine learning and / or pattern recognition. To obtain training data, for example, a test run is performed, wherein, for example, existing measuring devices are used to record and evaluate the notch lines and the fracture and / or grinding edges in steps A1-A3. The trained algorithm can then be used to evaluate measurement data generated later in the current process flow and generate corresponding correction signals.

[0103] The memory system is, for example, an internal data memory of the system, and / or the system has an interface for, for example, exchanging data with an external data memory via a network.

[0104] Training data can also be provided by comparing the measurement variables from different steps A1-A3 and B1-B3. For example, the measurement in step A2 reveals that the break edge is excessively fragmented in the case of tight bending. The algorithm of the control device C can therefore generate a correction signal to adjust, for example, the pressure applied to the glass surface by the cutting tool 30 when cutting the tight bend during a subsequent glass plate processing operation, and then analyze in step A2 whether the fragmentation on the break edge has decreased.

[0105] Training data can also be provided by evaluating and storing measurement data of dynamic and static measurement variables from previously processed glass plates.

[0106] The parameters derived from the desired shape and size of a useful component N can also be used as training data. For example, it is determined in step A2 that the fracture edge is too far from the desired contour K, so that too much must be removed in processing step A3. The algorithm of the control device C can therefore set the scribe line closer to the desired contour when processing a continuous glass plate, so that less grinding is required.

[0107] In general, the algorithm of the control device C allows the process sequence to be optimized during cutting and fracturing operations (site M1 in FIG. 13), during grinding operations (site M2 in FIG. 13), and, if provided, during drilling operations modeled by data-driven methods, without having to know the physical behavior of the machining process in detail.

[0108] For example, it is possible to optimize the proportion of broken glass, the quality of the useful component, and the processing time.

[0109] It is also understood that the control device C may be equipped, alternatively or additionally, with, for example, a physical model (site M3 in Figure 13) modeling the processing step B3. Application

[0110] By providing "artificial intelligence," the device can learn and continuously evolve. Therefore, it can optimize itself independently. The device can also operate more autonomously, thus reducing the need for operators and their workload.

[0111] By providing the measuring device, the equipment can obtain a comprehensive overview of the process parameters and the results obtained (the reaction of the glass during the processing operation and the characteristics of the processed glass).

[0112] Components already provided as standards can also be used to design measuring devices. For example, existing drives, especially actuators, can provide usable measurement data.

[0113] The measuring device is configured such that the measuring signals generated during the ongoing processing steps are recorded at a sufficient time resolution. The time resolution of the measuring data is preferably at least 10 Hz, and more preferably at least 100 Hz, at least 1000 Hz, and at least 10 kHz. The control device C is therefore configured to generate a control signal with a comparable time resolution. This resolution is therefore preferably at least 10 Hz, and more preferably at least 100 Hz, at least 1000 Hz, and at least 10 kHz. In this way, the control device C can adjust the control based on the measuring data during the ongoing processing operation.

[0114] As explained above, the various measurement variables are understandable: l Temperature on the conveying device 92 (permissible, for example, to correct the glass placement position), l The glass's reaction during processing operations (e.g., noise development and noise assessment during grinding operations), l The actual position and orientation of the glass plate on machines 20, 50, 70 (e.g., by optical assessment), l Edge quality after grinding operations (e.g., "fragmentation" in the grinding edge or cross-sectional symmetry), l Power consumption of the grinding tool 60 with respect to the path it moves relative to the useful component N.

[0115] Measurement data from the measuring device is collected, evaluated, and preferably stored by the control device C. For evaluation, the control device C includes an evaluation unit. Depending on the process and machine configuration, the control device C determines the target influence and the intensity of the applied influence. The control device C can, for example, simultaneously (e.g., within a fraction of a second) intervene in the dynamic, ongoing process to optimize it. Therefore, self-adjustment is possible within the process. Example: If excessive cutting pressure causes popping noise (within a specific frequency range) during the cutting operation, the cutting pressure is immediately reduced to a level without popping noise, resulting in a better cutting outcome. Therefore, self-adjustment is possible within the process. Example: During the grinding process, an evaluation of the grinding noise determines that the glass vibration is increasing. The grinding parameters are therefore adjusted immediately. The control device C can use previously determined and / or calculated information to adapt to subsequent processes on the same workpiece. Example: After the fracture operation, it was discovered that a corner of the glass protruded beyond the desired profile. The subsequent grinding machine 50 operated at this precise location using appropriate parameters to grind away the corner and achieve the best possible result. The control device C can collect information and adjust parameters across multiple workpieces / batch. Example: After the fracture operation, a sloping fracture profile was observed at the edge of the glass. The fracture path or fracture parameters were adjusted from glass to glass to repeatedly approach the ideal value.

[0116] This device can be networked with other devices of the same type to optimize the sharing of success with such other devices. The obtained information can also be used for product documentation and / or as input to upstream and downstream process chains.

[0117] The glass that can be processed using this equipment is a glass sheet for applications such as: vehicles, buildings, displays, solar panels, and kitchens (especially oven doors and cooktops). The glass sheet can also be ceramic glass.

[0118] Automated quality control can also be implemented by measuring the glass plate G or the useful component N outside of a processing step. However, this quality control is optional and may only be needed initially. With the help of artificial intelligence, particularly machine learning and / or pattern recognition, conclusions about quality can also be indirectly drawn by evaluating the dynamic measurement variables recorded during the process.

[0119] The measuring device can be used to record static measurement variables after a processing step (cutting, breaking, grinding, or drilling), such as the condition of the broken / ground edge as explained above. These measurement variables can be recorded at least partially in a position-resolved manner, preferably entirely along the periphery of the edge of the processed glass, and can be associated with these measurement variables recorded during a previous processing step based on the position of the tool associated with the contour. The positional resolution for these static measurement variables is preferably at least the product of the temporal resolution of the measurement during processing and the processing speed along the edge of the glass, particularly preferably at least 10% of that value.

[0120] By comparing static and dynamic measurement variables, optimal process parameters can be identified, and one or more process steps can be better modified to meet requirements such as accuracy, tool wear, energy requirements, cycle time, etc. For example, dynamic measurement variables from two or more different process steps can be implemented and analyzed, each followed by quality measurements to obtain static measurement variables, in order to identify areas where continuous improvement of process parameters is permissible. Only one or more process parameters can be varied to discover optimization directions.

[0121] In a further embodiment, the measuring device of the apparatus is capable of recording other measurement variables, such as changes in glass properties, temperature variations in the environment, etc., in order to achieve further optimization in production.

[0122] In one embodiment, the device is optimized in such a way that it can immediately produce useful parts with the desired profile, i.e., without undergoing test runs.

[0123] Recording and evaluating the measured variables can also improve the cutting operation plan and / or fracture plan used for processing subsequent glass plates. The cutting plan defines the outline of the at least one useful component and optionally one or more auxiliary cutting lines to define the fracture in the unused edge area of ​​the glass plate. The fracture plan specifies where and how force should be applied to the cut glass plate to initiate fracture. The cutting plan and the fracture plan can be improved, for example, by reducing the portion of the glass plate edge that does not belong to the useful component N and is therefore broken and / or ground.

[0124] The measuring and control device of this equipment also allows for improvements in monitoring, diagnostics, and maintenance. For example, this could be the status of the tool or other component of the machine, particularly consumables (coolant, lubricant, energy consumption). Using the measuring device, for example, one or more measurement variables of the tool or other component of the individual machine can be recorded and, if necessary, correlated with dynamic and / or static measurement variables to detect any unwanted deviations, particularly anomalies. The equipment can be configured in such a way that, for example, a message is generated when a tool is excessively worn and therefore requires maintenance.

[0125] It is possible to predict tool wear and the correct timing for tool replacement. Therefore, both tools and machines can be subject to predictive maintenance and / or condition monitoring. Furthermore, by adapting these machine parameters, the control of the machine can be improved and optimized to reduce wear on the tools or other components of the machine. For example, drives can be controlled in such a way that acceleration and / or deceleration are optimized.

[0126] In one feasible embodiment, the system has, for example, a processing device for shaping and / or sharpening the abrasive tool 60. The control devices 100-103 are configured such that they actuate the processing device according to at least one of the measured variables of the abrasive tool 60 and / or at least one measured state variable. For example, the actuation is such that the processing device specifies the force and / or speed for processing the sharpening stone of the abrasive tool 60, and / or the frequency and / or duration of the sharpening process of the sharpening stone, and / or the abrasive tool 60 is processed according to the shape of one edge of the sharpening stone. The sharpening process of the sharpening stone can be controlled, for example, based on the current used by the electric motor 55 and / or the force of the sharpening stone pressing against the abrasive tool 60. A linear actuator can be provided for moving the sharpening stone.

[0127] The actual sharpness of the polishing tool 60 can be determined, for example, based on the energy used to drive the polishing tool 60. For example, the current used by the electric motor 55 can be measured and integrated over the time during which the polishing tool 60 polishes the glass edge or a specific portion thereof. When the integrated current exceeds a predetermined threshold, the polishing tool 60 is thus sharpened. Depending on the selection of the threshold, this sharpening operation can be initiated once or multiple times during the normal service life of the polishing tool 60.

[0128] In one embodiment, the grinding process is configured such that the grinding tool 60 is self-sharpening. The grinding tool is, for example, configured to include granules such as diamonds embedded in a matrix via an adhesive layer. The grinding process, for example, feeding the grinding tool 60 toward the edge of the glass, can be controlled such that when the granules are released from the wheel, their adhesive layer is also worn away, so that subsequent particles appear on the surface. Thus, the grinding tool 60 does not require a separate sharpening operation. It is understandable that additional portions are provided on the useful component N, which are ground by the grinding tool 60 to achieve the self-sharpening effect.

[0129] In a similar manner to the grinding tool 60, the actual sharpness of the drilling tool 71 can be determined, for example, based on the energy used to drive the drilling tool 71. For example, the current used by the drive can be measured and integrated over the time during which the drilling tool 71 drills. When the integrated current exceeds a predetermined threshold, the drilling tool 71 is thus sharpened by a sharpening device.

[0130] In one embodiment, the drilling process is configured such that the drilling tool 71 is self-sharpening.

[0131] From the foregoing description, those skilled in the art can make many modifications without exceeding the scope of protection of the invention as defined by the claims.

[0132] In the apparatus shown in these figures, the cutting operation and the breaking operation are performed on the same machine 20. Among other things, the components 23, 24, 27, and 28 for moving tools 30 and 40 are therefore part of the cutting device for cutting the glass plate G and part of the breaking device for breaking the glass plate G. Alternatively, it is understood that the system is designed in such a way that the cutting and breaking operations are performed at different locations, such that the cutting and breaking devices can have separate components for moving the cutting tool 30 and the breaking tool 40.

[0133] It is also understood that a machine is provided that can perform multiple processes such as cutting, breaking, grinding, and, if provided, drilling.

[0134] As described above, a pneumatic actuator can be provided to move the cutting tool 30 or the breaking tool 40. Alternatively, a linear actuator can be provided to move the tools 30, 40 toward and away from a glass plate to be processed. Compared to a pneumatic actuator, a linear actuator allows for more precise movement and / or improved force control. Preferably, the linear actuator includes at least one position sensor that provides a signal at a travel position and the position of the tools 30, 40 with the signal. The linear actuator is configured such that the tool position can be determined when the tools 30, 40 contact a surface. Therefore, it is possible to detect whether the tools 30, 40 are facing a glass plate.

[0135] In one embodiment, the linear actuator is applied to measure the unevenness of the surface supporting a glass plate during cutting and / or breaking operations, for example, the conveyor belt 22 of machine 20. This measured unevenness can be stored, for example, in a lookup table, and can be taken into account for thin glass plates, such as those less than 1 mm thick, which may not have a perfectly flat surface when supported on an uneven surface, and therefore may vary in the vertical direction, thus requiring processing.

[0136] In a further embodiment, the linear actuator is applied to measure the thickness of the glass plate to be processed. This allows the starting positions of tools 30, 40 to be selected closer to the glass plate. Therefore, the path along which tools 30, 40 move between the starting position and the position where tools 30, 40 act on the glass plate can be shortened. Overall, the cycle time between the two cutting and / or breaking processes can be reduced.

[0137] In another embodiment, the same actuator, preferably a linear actuator, can be applied to alternately move the cutting tool 30 and the breaking tool 40 toward the glass plate. Figure 16 shows an example of a possible kinematics. The actuator 35 is coupled to the cutting tool 30 and the breaking tool 40 via a hinge member 36, and a guide member 37 is disposed between the cutting tool 30 and the hinge member 36. When the actuator 35 moves axially downward, the cutting tool 30 is pressed downward, and when it moves axially upward, the breaking tool is pressed downward.

[0138] In a further embodiment, the mass of the mechanism for the cutting tool 30 is reduced by providing a spring and / or a magnetic component. Therefore, it can be determined that the forces occurring in the cutting process have reduced noise and force.

[0139] The sharpness of the cutting wheel can be determined by determining the position of the cutting tool 30, particularly by providing the linear drive as explained above. As the cutting wheel becomes less sharp, its depth of penetration into the glass decreases, and therefore its position changes. Furthermore, the sharpness of the cutting wheel can be determined by detecting the vibration of the cutting tool 30 during the cutting operation. [Simplified Explanation of the Diagram]

[0011] The invention will now be explained with reference to exemplary embodiments of the drawings, in which: FIG1 is a plan view of an embodiment of the apparatus according to the invention; FIG2 is a side view of the apparatus according to FIG1; FIG3 is a perspective view of the apparatus according to FIG1; FIG4 is a perspective view of a machine of the apparatus according to FIG1 used for cutting and breaking operations; FIG5 is a detailed view of the machine of FIG4 in the form of a cross-sectional side view during a cutting operation; FIG6 shows an example of cutting a glass plate; FIG7 is a detailed view according to FIG5, but during a breaking operation; FIG8 shows the useful component, which has been broken according to FIG6 in this example; FIG9 is a perspective view of a machine of the apparatus according to FIG1 used for a grinding operation; FIG10 is a detailed view of the machine of FIG9 in the form of a cross-sectional side view during a grinding operation; FIG11 is a detailed cross-sectional view of a useful component obtained from the side; FIG12 is a detailed view of the useful component according to FIG11 after the grinding operation. Figure 13 schematically shows the processing flow of the machining operation and its interaction with the control device; Figure 14 schematically shows a tiltable cutting wheel; Figure 15 is a cross-sectional side view of a drill bit; Figure 16 schematically shows an example of the kinematics for moving two tools with the same drive; Figure 17 schematically shows a side view of a measuring device for sensing a glass edge; Figure 18 is a top view of the measuring device of Figure 17, wherein the glass edge is in a first position; and Figure 19 is a top view of the measuring device of Figure 17, wherein the glass edge is in a second position.

Claims

1. An apparatus for producing at least one useful component (N) from a glass plate (G) by means of processing steps, the processing steps including cutting, breaking and grinding operations, wherein the shape of the at least one useful component is defined by a profile (K), wherein the apparatus comprises: l a cutting device having at least one cutting tool (30) for cutting the glass plate, l a breaking device having at least one breaking tool (40) for separating the useful component, l a grinding device having at least one grinding tool (60) for grinding the edge of the useful component, wherein the respective tools (30, 40, 60) and the glass plate or the useful component are arranged to be movable relative to each other, l a measuring device for generating a measuring signal, wherein l The device includes a first measurement variable and at least one of a second, third, fourth, and fifth measurement variable, wherein the first measurement variable is detectable during one of the processing steps based on the relative position of the tool valid with respect to the contour system in that processing step, and the first measurement variable defines a first process parameter of at least one first component of the device and / or the glass plate and / or the useful component, the first component being valid in that processing step; the second measurement variable is detectable during another processing step based on the relative position of the tool valid with respect to the contour system in that other processing step, and the second measurement variable defines a second process parameter of at least one second component of the device and / or the glass plate and / or the useful component, the second component being valid in that other processing step. The third measurement variable is detectable during the execution of the processing step, wherein the first measurement variable is detectable based on the relative position of the tool with respect to the profile system being valid during the processing step, and the third measurement variable defines a third process parameter of at least one third component of the device and / or the glass plate and / or the useful part, wherein the third component is valid during the processing step; the fourth measurement variable specifies the process parameter of at least one fourth component of the device during the execution of the processing step in which the first or second measurement variable is detectable, wherein the fourth component is valid during the processing step and is preferably the first or second component of the device; and the fifth measurement variable is detectable outside of a processing step, wherein the fifth measurement variable defines a state parameter of at least a portion of the glass plate. A control device (100-103) is provided for controlling the cutting device, the breaking device, and the grinding device. The control device is capable of receiving the measurement signals to generate measurement data from the measurement variables. The control device is configured to generate correction signals based on the measurement data. When processing the glass plate and / or the useful component and / or when processing a subsequent glass plate and / or useful component, the correction signals are used to control at least one of the devices in an appropriate manner.

2. The apparatus of claim 1, wherein the measuring device has at least one of the following features A1)-A9): A1) The measuring device is configured such that the fifth measuring variable can be detected along at least a portion of the edge of the useful component (N) after a breakage and / or grinding operation; A2) The measuring device is configured such that it can be based on force measurement; path, in particular, contour error on one of the movement axes of the device; velocity measurement; acceleration, in particular, vibration measurement; energy demand, in particular, current of the driver; temperature measurement; acoustic measurement; optical measurement, in particular optical measurement for generating signals that can be generated by reflection and / or modulation of a light beam and / or detection of light intensity on the useful component; capacitance measurement; inductive measurement; magnetic field measurement; and / or tactile measurement to generate measurement signals; A3) The measuring device includes at least one photosensitive unit, in particular a camera (130, 136, 152, 152a-152d) for capturing at least a portion of the glass plate (G);The control device is preferably equipped with an image processing algorithm configured to process images provided by the camera. A4) The measuring device is configured such that the control device (100-103) can generate measurement data for the first, second, third, and / or fourth measurement variables from the received measurement signals, the measurement data having a time resolution of at least 10 Hz and, more preferably, at least 100 Hz, at least 1000 Hz, and at least 10 kHz. A5) The measuring device is configured such that the measurement signals include at least two and preferably all three of the second, third, fourth, and fifth measurement variables. A6) The measuring device is configured such that the measurement signals include the first, second, and fifth measurement variables and a sixth measurement variable, wherein the sixth measurement variable can be detected during a different processing step than when the first and second measurement variables are detected, or outside a different processing step than when the fifth measurement variable is detectable. A7) The measuring device includes at least one sensor for measuring the ambient conditions of the device, particularly ambient temperature, humidity, and / or light intensity, for generating a measurement signal including a further measurement variable, which can be fed to the control device. A8) The measurement signal generated by the measuring device includes a measurement variable, which is the fifth measurement variable or a further measurement variable and defines a state parameter of the broken portion of the glass plate (G). A9) The measuring device is configured such that the control device (100-103) can generate measurement data from the received measurement signals for the first, second, third, fourth, and / or fifth measurement variables, the measurement data having a spatial resolution of at least 10 cm, preferably at least 1 cm, and particularly preferably at least 1 mm.

3. The device as claimed in claim 1 or 2, wherein the control device (100-103) has at least one of the following features B1)-B5): B1) The control device is equipped with an algorithm based on artificial intelligence, particularly for machine learning and / or for pattern recognition, wherein the correction signals can be generated by the algorithm; B2) The control device is configured to evaluate the measurement data when determining the cutting plan and / or fracture plan of the glass plate (G) to be subsequently processed, particularly when determining at least one auxiliary cutting line (H); B3) The control device is configured to generate correction signals during the processing step, wherein the first and third measurement variables can be detected, and the correction signals cause changes in the first and / or third measurement variables to dynamically adjust the processing step; B4) The control device is configured to generate correction signals during the processing step, wherein the first or second measurement variable is detectable, and the correction signals cause changes in the first and / or fourth measurement variable or the second and / or fourth measurement variable in order to dynamically adjust the processing step. B5) The control device is configured to generate the correction signals by including measurement data, which is based on at least one of the measurement variables and formed during the prior generation of the useful component.

4. The device as claimed in claim 1 or 2, wherein the device includes an internal data memory and / or an interface for exchanging data with an external data memory, particularly via a network, wherein at least a portion of the measurement data can be stored in the internal and / or external data memory so that it can be taken into account when determining the calibration signals for the subsequently processed glass plate (G).

5. The device of claim 1 or 2, wherein the measurement signals generated by the measuring device include at least one measurement state variable that defines a state parameter of at least one component of the device after a processing step, particularly a state parameter of one of the tools (30, 40, 60), wherein the control device (100-103) is configured to take the measurement state variable into account when generating the correction signals and / or generate a message signal when the measurement state variable reaches a threshold value.

6. The apparatus of claim 1 or 2, having a processing device for shaping and / or sharpening the at least one abrasive tool (60), wherein the control device (100-103) is configured to actuate the processing device according to at least one of the measurement variables and / or at least one measurement state variable; the actuation preferably causes the processing device to specify the frequency and / or duration of the sharpening process using a sharpening stone to process the abrasive tool and / or the power of the sharpening stone and / or the abrasive tool preferably being processed according to the shape of one edge of the sharpening stone.

7. The apparatus of claim 1 or 2, wherein the measurement signals generated by the measuring device include a measurement variable, namely the first, second, third, fourth, or another measurement variable, and are associated with the cutting process step, and define a process parameter including at least one of the following: l the force of the cutting tool (30) acting on the glass plate (G), l the speed at which the cutting tool can move along the glass plate, l the sound generated by the glass plate during the cutting operation, l the vibration of the glass plate and / or the cutting tool during the cutting operation, l the thickness of the glass plate, l the amount of cutting oil that can be applied to the cutting line, l the mechanical stress in the glass plate, l the depth and / or width of the cutting line, l the number and / or quantity of glass fragments along the cutting line, l the power of at least one driver for moving the cutting tool, l the position where the cutting tool contacts the glass plate, l the temperature of the useful component, l the transparency of the useful component, l The actual position of one of the moving axes of the cutting device, in particular the actual position along at least one linear axis and / or about a rotation axis and / or the actual tilt angle of one of the tiltable cutting wheels of the at least one cutting tool relative to the vertical axis; the target position of one of the moving axes of the cutting device, in particular the target position along at least one linear axis and / or about a rotation axis and / or the target tilt angle of one of the tiltable cutting wheels of the at least one cutting tool relative to the vertical axis; and the profile error on one of the moving axes of the cutting device.

8. The apparatus of claim 1 or 2, wherein the measurement signals generated by the measuring device include a measurement variable, namely the first, second, third, fourth or another measurement variable, and are associated with the fracture processing step, and define a process parameter including at least one of the following: l the force of the fracture tool (40) acting on the glass plate (G), l the position of the fracture tool in contact with the glass plate, l the speed at which the fracture tool can move along the glass plate, l the sound generated by the glass plate during the fracture operation, l the vibration of the glass plate and / or the fracture tool during the fracture operation, l the shape and / or geometric profile and / or time profile of the edge formed during the fracture operation, l the thickness of the glass plate, l the mechanical stress in the glass plate, l the temperature of the glass plate, l the intensity and / or wavelength of a fracture tool in the form of light.

9. The apparatus of claim 1 or 2, wherein the measurement signals generated by the measuring device include a measurement variable, namely the first, second, third, fourth, or another measurement variable, and are associated with the grinding process step, and define a process parameter including at least one of the following: l the force of the grinding tool (60) acting on the useful component (N), l the force of the useful component acting on the support, the useful component resting on the support during the grinding operation, l the sound generated by the useful component during the grinding operation, l the vibration of the useful component and / or the grinding tool during the grinding operation, l the energy of moving the grinding tool, particularly the power of a driver, l the temperature of the useful component, the grinding tool, and / or the coolant used for the grinding tool, l the shape, roughness, translucency, and / or color of the edge of the useful component, l the actual position of one of the moving axes of the grinding device, l the target position of one of the moving axes of the grinding device, l the profile error on one of the moving axes of the grinding device, l the light generated during the grinding process, particularly the intensity and / or wavelength, l The amount of abrasive particles that can be removed from the grinding tool in the coolant, l the characteristics of the coolant supplied to and / or removed from the grinding tool, l the state of a temperature indicator in the coolant, wherein the detection preferably causes the state of the temperature indicator to change from a predetermined temperature, l the characteristics of the grinding tool (60), particularly its shape and / or diameter.

10. The apparatus of claim 1 or 2, wherein the measurement signals generated by the measuring device include a measurement variable, namely the fifth or further measurement variable, and define at least one of a plurality of state parameters of the glass plate (G) or the useful component (N): l the size of the glass plate or the useful component, l the thickness of the glass plate or the useful component, l the weight of the glass plate or the useful component, l the position of the glass plate or the useful component relative to a known coordinate system, l the shape of at least one cutting line on the glass plate in the depth direction and / or along the path, l the position of at least one auxiliary cutting line (H) on the glass plate, l the mechanical stress in the glass plate, l the traces of cutting oil on the cut glass plate, l the shape of the edge (E) of the broken useful component, particularly the conchoidal split at the transition to the upper and / or lower side of the useful component, l the shape of the edge (E') of the ground useful component, l the roughness, translucency and / or color of the ground edge.

11. The device of claim 1 or 2, comprising at least one of the following features C1)-C11): C1) The cutting tool comprises a cutting wheel (30), preferably the cutting wheel (30) being tiltable relative to the vertical axis; C2) The cutting tool is movable on at least two axes (X, Y), preferably on three axes (X, Y, Z); C3) The cutting tool is rotatable about an axis; C4) The fracturing tool comprises at least one fracturing body (40), which is movable on at least two axes (X, Y), preferably on three axes (X, Y, Z); the at least one fracturing body is also preferably pivotable about at least one axis; C5) The fracturing tool comprises at least two fracturing bodies, one of which is movable along the front side of the glass plate (G), and the other fracturing body is movable along the rear side of the glass plate; C6) The grinding tool comprises at least one grinding wheel (60); C7) The grinding tool is movable on at least one axis (Y), preferably on at least two axes (Y, Z), and particularly on at least three axes (X, Y, Z). C8) The grinding apparatus includes a support (52) on which the useful component (N) rests during the grinding operation and is rotatable about an axis. C9) The cutting apparatus includes a laser for generating a laser beam as a cutting tool. C10) The fracturing apparatus includes a means for heating and / or cooling the glass plate; at least one structure is preferably generated by the means as a fracturing tool, the structure being in the form of a liquid, gas, and / or light. C11) The cutting tool and the fracturing tool are coupled to the same actuator (35), wherein actuation of the actuator causes the cutting tool or the fracturing tool to move toward the glass plate.

12. The apparatus of claim 1, further comprising a drilling device having at least one drilling tool (71) for drilling the useful component (N) as a further processing step, wherein the measurement signals generated by the measuring device preferably include a first further measurement variable and / or a second further measurement variable, the first further measurement variable being detectable during drilling operations and defining a further process parameter of at least one component (71) of the drilling device and / or the useful component, the second further measurement variable defining a state parameter of the useful component after the drilling operations.

13. The apparatus of claim 12, comprising a processing device for sharpening the at least one drilling tool (71), wherein the control device (100-103) is configured to actuate the processing device according to at least one of the measurement variables, at least one of the further measurement variables and / or at least one measurement state variable; the actuation preferably causes the processing device to specify the frequency and / or duration of the sharpening process of processing the drilling tool with a sharpener and / or the power of the sharpener and / or the drilling tool preferably to be processed according to the shape of one edge of the sharpener.

14. A method for producing at least one useful part (N) from a glass plate (G) by means of processing steps including cutting, fracturing, and grinding, wherein the shape of the at least one useful part is defined by a profile (K), wherein a cutting device cuts the glass plate by moving at least one cutting tool (30) and the glass plate opposite to each other, a fracturing device separates the useful part by moving at least one fracturing tool (40) and the glass plate opposite to each other, and a grinding device grinds an edge of the useful part by moving at least one grinding tool (60) and the useful part opposite to each other, wherein measurement signals are generated by a measuring device, the measurement signals including a first measurement variable and at least one of a second, third, fourth, and fifth measurement variables, wherein the first measurement variable is detectable during the execution of one of the processing steps based on the relative position of the tool that is valid with respect to the profile in that processing step, and defines a first process parameter of at least one first component of the device and / or the glass plate and / or the useful part, the first component being valid in that processing step. The second measurement variable is detected during the execution of another processing step based on the relative position of the tool that is valid with respect to the contour system in that processing step, and defines a second process parameter for at least one second component of the device and / or the glass plate and / or the useful component, which is valid in the other processing step. The third measurement variable is detected during the execution of the processing step, wherein the first measurement variable is detected based on the relative position of the tool that is valid with respect to the contour system in that processing step, and defines a third process parameter for at least one third component of the device and / or the glass plate and / or the useful component, which is valid in the processing step. The fourth measurement variable specifies a process parameter of at least one fourth component of the apparatus during the execution of the processing step in which the first or second measurement variable is detected, the fourth component being effective in the processing step and preferably being the first or second component of the apparatus; the fifth measurement variable is a state parameter that can be detected outside of a processing step and defines at least a portion of the glass plate; and a control device (100-103) for controlling the cutting device, the breaking device, and the grinding device receives the measurement signals and forms measurement data from the measurement variables, wherein the control device forms correction signals based on the measurement data, and at least one of the apparatuses can be controlled in an adaptive manner using the correction signals when processing the glass plate and / or the useful component and / or when processing a subsequent glass plate and / or useful component.

15. The method of claim 14, comprising at least one of the following steps S1 to S3: S1) The control device (100-103) controls at least one grinding tool (60) based on the measurement data such that the at least one grinding tool remains sharp or has at least reduced loss of sharpness when grinding the edge of at least one useful part (N), preferably, the control device (100-103) controls the cutting rotation speed, feed speed and / or grinding depth of the at least one grinding tool (60) based on the measurement data to maintain the sharpness of the grinding tool (60) or cause at least reduced loss of its sharpness; S2) Performing the cutting and breaking operation of the glass plate (G) such that the useful part separated from the glass plate includes at least one additional portion for sharpening the grinding tool; S3) The at least one useful component (N) is drilled by at least one drilling tool (71) of a drilling apparatus, wherein the control device (100-103) controls the at least one drilling tool (71) based on the measurement data so that the at least one drilling tool remains sharp or has at least a reduced loss of sharpness when drilling the at least one useful component (N), in particular the control device (100-103) controls the rotational speed and / or forward speed of the at least one drilling tool (71) based on the measurement data to maintain the at least one drilling tool (71) sharp or cause at least a reduced loss of its sharpness.

16. The method of claim 14 or 15 is performed on one of the devices of claims 1-13.

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