CA2341058A1 - Method for measuring various parameters, such as length, thickness width and/or surface evenness, of at least one sheet - Google Patents
Method for measuring various parameters, such as length, thickness width and/or surface evenness, of at least one sheet Download PDFInfo
- Publication number
- CA2341058A1 CA2341058A1 CA 2341058 CA2341058A CA2341058A1 CA 2341058 A1 CA2341058 A1 CA 2341058A1 CA 2341058 CA2341058 CA 2341058 CA 2341058 A CA2341058 A CA 2341058A CA 2341058 A1 CA2341058 A1 CA 2341058A1
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- Prior art keywords
- sheet
- measuring
- thickness
- width
- surface evenness
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/06—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness specially adapted for measuring length or width of objects while moving
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
Abstract
In a method for measuring various parameters, such as length (L), thickness (D), width (B) and/or surface evenness of at least one sheet (1), especially a metal sheet, at least one measuring device (6.1, 6.2), especially a laser, being directed onto the sheet (1), in order to measure the thickness (D) and/or width (B), the sheet (1) is introduced in a direction X between two measuring devices (6.1, 6.2) arranged opposite one another to be movable in a direction Y.
Description
Method for measuring various parameters, such as length, thickness, width and/or surface evenness, of at least one sheet The present invention relates to a method for measuring various parameters, such as length, thickness, width and/or surface evenness of at least one sheet, especially a metal sheet, at least one measuring device, especially a laser, being directed onto the sheet, and an apparatus for carrying out the method.
In such known prior art methods for measuring different parameters such as length, thickness, width and, especially, the surface evenness of any desired sheet, preferably a metal sheet, especially an aluminum sheet, interferences are produced, for example in the case of 3D measurement methods using laser light and grids, which are laboriously applied to a sheet to be measured.
If an irregularity is detected in the sheet, especially uneven points in the surface, such as for example bulges, the corresponding interference lines have a bulging and undulating course. This course of the interferences can be measured and analyzed by means of optical detection equipment.
A disadvantage of 3D measurement methods here is that they require extremely elaborate measuring devices, which are extremely cost-intensive to produce and operate. In addition, such measuring devices are extremely costly to procure and laborious to handle.
The object of the present invention is to provide a method for measuring various parameters, such as length, thickness, width or surface evenness of a sheet, especially a metal sheet, and an apparatus for carrying out the method which eliminate said disadvantages and whereby simple, cost-effective and very accurate measurement of said parameters is made possible. Furthermore, such an apparatus is intended to be capable of easy incorporation into a production process. In addition, the accuracy of such measuring methods is to be substantially increased.
This object is achieved in that, in order to measure the thickness and/or width, the sheet is introduced in a direction X between two measuring devices arranged opposite one another to be movable in a direction Y.
In the present invention, two opposing measuring devices are provided which are arranged to be capable of a synchronous advance in a direction Y transversely to a direction X.
The latter are linked in such a way that measuring devices such as, for example, lasers, ultrasound, sound or the like are arranged directly opposite one another. An upper measuring device can be reciprocally moved in the direction X relative to a transverse support.
At the end face, a measuring table is adjoined by a transverse crosspiece, on which a lower measuring device can be reciprocally moved in the directions Y
only.
If the transverse support and transverse crosspiece are arranged one above the other, a gap is formed between them. A sheet to be measured, preferably an aluminum sheet, is introduced into this gap and, by subjecting the surface, for example, to the action of laser light, a distance between measuring device and surface can be exactly ascertained. Similarly, a lower measuring device can determine by means of laser light a distance from the surface to the lower sheet.
As a distance between the two measuring devices is measurable and, in particular, known, an exact thickness of the sheet can be determined after deduction of the values of the respective distances from the surfaces which are determined by means of the measuring devices. In this arrangement, the upper and/or lower measuring device can be moved by sections in a direction Y, synchronously and located exactly one above the other, a thickness measurement being possible by sections.
It is also conceivable to undertake a thickness measurement continuously over the entire width, so that as many selectable measuring points as desired can be ascertained over the respective width.
After a measuring operation has been carried out over the entire width of the sheet, the sheet is further introduced toward the measuring table by a selectable and ascertainable section and further continuous movement and measurement of the two measuring devices in the direction Y takes place. This operation is repeated until the sheet has been moved completely into the measuring table and the individual measuring points relating to thickness have been completely determined over its length. At the same time, a width measurement of the sheet takes place during the respective movement of the measuring devices in the direction Y.
A transport device serves to introduce the sheet into the measuring table and is arranged to be capable of being lowered into the latter, in order to lay the sheet on the measuring table. After the sheet has been laid on the measuring table, which may be formed from metal, stone or the like, the upper measuring device is advanced in the direction X and/or in the direction Y, the measuring device continuously and intermittently determining a distance from the sheet in the direction X
and across the complete width in the direction Y. These ascertained distances from the sheet are compared with the distances between measuring device and measuring table as a reference value.
If the distance changes, especially in certain areas, relative to the reference value, this change is an indication that the sheet lacks surface evenness. In addition, different ascertained thicknesses can be used as corrective values in determining surface evenness.
As a result, the quality of the surface, especially the surface evenness of the sheet can be determined exactly. As a result of these individual ascertained values, which are produced in accordance with the thickness measurement, the quality of the sheet, in particular, can be determined. This is particularly advantageous for the production engineering of subsequent working steps and, especially, for processing and quality control of the sheet. In addition, this can be used for an examination of the material, for example for blow-holes or similar irregularities or similar damage to the sheet.
Preferably, all data on the sheet are determined and recorded for specific locations, so that the sheet always contains defined data values based on local coordinates which, for example, can be stored separately for each sheet in a data file. As a result, each sheet becomes clearly identifiable, and it is recorded on which side and at which point on the sheet, for example, irregularities or differences in thickness are to be found.
In addition, the exact thickness, width and length can be used to set any clamping tool used in a processing center during subsequent further processing automatically to those values. This is also to lie within the scope of the present invention.
Further advantages, features and details of the invention are apparent from the description of preferred examples of embodiment which follows and with reference to the drawing, in which:
Figure 1 shows a diagrammatically presented lateral view of an apparatus for measuring different parameters such as length, thickness, width and/or surface evenness of a sheet in a position of use;
Figure 2 shows a diagrammatically presented lateral view of the apparatus according to figure 1 in a further position of use;
Figure 3 shows a diagrammatically presented plan view of the apparatus according to figure 2;
Figure 4 shows a perspective presentation of a view of the apparatus according to figures 1 and 2 with the transport device moved out.
According to figures 1 and 2, an apparatus R
according to the invention for measuring different parameters, such as length L, thickness D, width B of a sheet 1, has a measuring table 2 which is designed absolutely even and is fixed relative to a base 3. The _ 7 _ measuring table 2 may consist of high-grade steel or alternatively of granite.
The measuring table 2 overlaps on each side of a frame 4 as is also shown in figures 3 and 4. The frame 4 is correspondingly provided with rails, not given detailed reference numbers here, on which a transverse support 5 is arranged. The transverse support 5 overlaps the measuring table 2 and lies absolutely without play on both lateral frames 4 and can be moved thereon in the direction X illustrated. An upper measuring device 6.1 is arranged to be movable in the direction Y shown along the transverse support 5, see also figure 3.
Furthermore, a further transverse crosspiece 7 adjoins the measuring table 2 approximately at the end face at one end and preferably extends somewhat below the measuring table 2 between the two frames 4.
A lower measuring device 6.2 is reciprocally movable along this transverse crosspiece 7 in the direction Y shown, at right angles to the direction X.
The upper measuring device 6.1 is arranged across the frame 4, above the measuring table 2 to be movable in the direction X and/or Y.
At the end face, a conveyor device 8 adjoins the frame 4 or the transverse crosspiece 7 and delivers the respective sheets 1 to be measured.
As is further apparent from figures 1 and 4, at least one transport device 9 is assigned to the measuring table 2 and consists of a plurality of conveyor belts 10, preferably running in direction X, which are in each case spaced from one another. In this arrangement, the individual conveyor belts 10 are set into corresponding recesses 11. By means of an actuating _ g _ device 12, for example by means of a hydraulic cylinder, the transport device 9 with its conveyor belts 10 can be moved out from the plane of the measuring table 2 in order first to introduce a sheet 1 to be measured into the measuring table 2 and, by lowering of the conveyor belts 10, to lay it down and, after measurement, to raise the sheet 1 off the measuring table 2 and move it out from the apparatus R.
The mode of operation of the present invention is as follows:
To determine a thickness D of a sheet 1, the latter is introduced between two measuring devices 6.1, 6.2 aligned exactly one above the other and preferably arranged at the end face of the measuring table 2, as is shown in figure 1.
A distance between the two measuring devices 6.1, 6.2, which may be lasers, ultrasonic sensors or the like, is exactly known and defined or can be remeasured at any time.
After a defined introduction of the sheet 1 between the two measuring devices 6.1, 6.2, the latter are moved continuously and jointly in the direction Y
shown over the entire width B of the sheet 1. Continuous or intermittent measurements are made of the distance between the measuring device 6.1, 6.2 and the respective surface of the sheet 1.
As a result of the fact that, overall, a distance between two measuring devices 6.1, 6.2 is known, and each measuring device merely measures the distance between the measuring device and the surface of the sheet 1, the exact thickness D of the sheet 1 can be calculated and determined in a simple manner. The thickness D is the resultant of the total distance between the two measuring devices 6.1 and 6.2 without the introduced plate, less the distances of the two measuring devices 6.1, 6.2 from the respective sheet surface determined after the introduction of the sheet 1 between the two measuring devices 6.1, 6.2, in each case relative to one another. The two measuring devices 6.1, 6.2 lie exactly one above the other and are moved synchronously in the direction Y, a continuous but also an intermittent measurement, especially determination of the thickness D, being possible. The sheet 1 is preferably in a position of rest when the two measuring devices 6.1, 6.2 move over the complete width D.
After a complete passage and measurement of a thickness D across the complete width B, the sheet 1 is further introduced into the measuring table 2 by a selectable distance or section. Subsequently, the measuring device 6.1, 6.2 again moves in the direction Y
over the complete width B of the sheet 1 in order again to determine the thickness D of the sheet 1 continuously or intermittently or by sections at another, determinable point.
This operation is repeated until the sheet 1 has been completely measured in selectable sections and at selectable points, and especially its thickness has been intermittently determined. At the same time, the width B
of the sheet 1 can be exactly determined by the reciprocal movement of the measuring device 6.1 over the complete width B of the sheet 1.
After the thickness D and also the width B of the sheet 1 have been determined, the sheet 1 is completely moved into the measuring table 2 by means of the transport device 9 and laid on the measuring table 2 by lowering of the transport device 9, especially of the conveyor belts 10, in the direction Z.
Then the measuring device 6.1 is moved in the direction X shown relative to the frame 4, so that an exact length L of the sheet 1 can be determined. In order to determine the surface evenness and also the surface quality, the transverse support 5 is then moved in a selectable section relative to the sheet 1 in the direction X. Subsequently, the measuring device 6.1 is moved in the direction Y shown over the complete width of the sheet 1 and each individual point or each individual distance, relative to a selected and determinable point, from the sheet 1 is measured and recorded as data. The corrective value can now be taken into account as thickness D to determine the surface evenness which was measured previously.
In this manner, the surface evenness of the sheet 1 can also be determined exactly in terms of surface area, so that any uneven areas can be identified and must be reprocessed if necessary.
On complete determination of the length L of the sheet 1 and of the surface evenness of the sheet 1 over the width B and over the length L in determinable and sectionally determinable distances in the direction X or Y, the sheet 1 is raised by means of the transport device 9 and moved out of the measuring table 2 at the end face for further processing.
In this arrangement, each sheet can be assigned the corresponding data, for example by means of a code or the like, so that a separate individual data set relating to these data, such as thickness, length, width and also surface evenness, can be assigned for each sheet. These data can, for example, be used or analyzed in a subsequent production process, the idea here being partly to influence by this means, the production and also the manufacture of the sheet 1. These data can, for example, also be used for automatic mounting and for automatic setting of workpiece holders of manufacturing machines. No limit is placed here on the present invention.
As a result, three-dimensional measurement of a sheet, preferably an aluminum sheet, is made possible in a simple and very precise manner. It is also conceivable, before or after a measurement and also after a determinable period, to undertake an adjustment of the measuring device 6.1 by measuring distances relative to the measuring table 2. In this case, a reference value can be implemented by measuring intermittently in the directions X and/or Y over the complete measuring table 2.
List of numbered items 1 Sheet 34 67 2 Measuring table 35 68 3 Base 36 69 4 Frame 37 70 5 Transverse support38 71 6 Measuring device 39 72 7 Transverse crosspiece40 73 8 Conveying device 41 74 9 Transport device 42 75 10 Conveyor belt 43 76 11 Recess 44 77 12 Confirmation device45 78 j 47 17 I 50 R Apparatus i 18 ~
I
In such known prior art methods for measuring different parameters such as length, thickness, width and, especially, the surface evenness of any desired sheet, preferably a metal sheet, especially an aluminum sheet, interferences are produced, for example in the case of 3D measurement methods using laser light and grids, which are laboriously applied to a sheet to be measured.
If an irregularity is detected in the sheet, especially uneven points in the surface, such as for example bulges, the corresponding interference lines have a bulging and undulating course. This course of the interferences can be measured and analyzed by means of optical detection equipment.
A disadvantage of 3D measurement methods here is that they require extremely elaborate measuring devices, which are extremely cost-intensive to produce and operate. In addition, such measuring devices are extremely costly to procure and laborious to handle.
The object of the present invention is to provide a method for measuring various parameters, such as length, thickness, width or surface evenness of a sheet, especially a metal sheet, and an apparatus for carrying out the method which eliminate said disadvantages and whereby simple, cost-effective and very accurate measurement of said parameters is made possible. Furthermore, such an apparatus is intended to be capable of easy incorporation into a production process. In addition, the accuracy of such measuring methods is to be substantially increased.
This object is achieved in that, in order to measure the thickness and/or width, the sheet is introduced in a direction X between two measuring devices arranged opposite one another to be movable in a direction Y.
In the present invention, two opposing measuring devices are provided which are arranged to be capable of a synchronous advance in a direction Y transversely to a direction X.
The latter are linked in such a way that measuring devices such as, for example, lasers, ultrasound, sound or the like are arranged directly opposite one another. An upper measuring device can be reciprocally moved in the direction X relative to a transverse support.
At the end face, a measuring table is adjoined by a transverse crosspiece, on which a lower measuring device can be reciprocally moved in the directions Y
only.
If the transverse support and transverse crosspiece are arranged one above the other, a gap is formed between them. A sheet to be measured, preferably an aluminum sheet, is introduced into this gap and, by subjecting the surface, for example, to the action of laser light, a distance between measuring device and surface can be exactly ascertained. Similarly, a lower measuring device can determine by means of laser light a distance from the surface to the lower sheet.
As a distance between the two measuring devices is measurable and, in particular, known, an exact thickness of the sheet can be determined after deduction of the values of the respective distances from the surfaces which are determined by means of the measuring devices. In this arrangement, the upper and/or lower measuring device can be moved by sections in a direction Y, synchronously and located exactly one above the other, a thickness measurement being possible by sections.
It is also conceivable to undertake a thickness measurement continuously over the entire width, so that as many selectable measuring points as desired can be ascertained over the respective width.
After a measuring operation has been carried out over the entire width of the sheet, the sheet is further introduced toward the measuring table by a selectable and ascertainable section and further continuous movement and measurement of the two measuring devices in the direction Y takes place. This operation is repeated until the sheet has been moved completely into the measuring table and the individual measuring points relating to thickness have been completely determined over its length. At the same time, a width measurement of the sheet takes place during the respective movement of the measuring devices in the direction Y.
A transport device serves to introduce the sheet into the measuring table and is arranged to be capable of being lowered into the latter, in order to lay the sheet on the measuring table. After the sheet has been laid on the measuring table, which may be formed from metal, stone or the like, the upper measuring device is advanced in the direction X and/or in the direction Y, the measuring device continuously and intermittently determining a distance from the sheet in the direction X
and across the complete width in the direction Y. These ascertained distances from the sheet are compared with the distances between measuring device and measuring table as a reference value.
If the distance changes, especially in certain areas, relative to the reference value, this change is an indication that the sheet lacks surface evenness. In addition, different ascertained thicknesses can be used as corrective values in determining surface evenness.
As a result, the quality of the surface, especially the surface evenness of the sheet can be determined exactly. As a result of these individual ascertained values, which are produced in accordance with the thickness measurement, the quality of the sheet, in particular, can be determined. This is particularly advantageous for the production engineering of subsequent working steps and, especially, for processing and quality control of the sheet. In addition, this can be used for an examination of the material, for example for blow-holes or similar irregularities or similar damage to the sheet.
Preferably, all data on the sheet are determined and recorded for specific locations, so that the sheet always contains defined data values based on local coordinates which, for example, can be stored separately for each sheet in a data file. As a result, each sheet becomes clearly identifiable, and it is recorded on which side and at which point on the sheet, for example, irregularities or differences in thickness are to be found.
In addition, the exact thickness, width and length can be used to set any clamping tool used in a processing center during subsequent further processing automatically to those values. This is also to lie within the scope of the present invention.
Further advantages, features and details of the invention are apparent from the description of preferred examples of embodiment which follows and with reference to the drawing, in which:
Figure 1 shows a diagrammatically presented lateral view of an apparatus for measuring different parameters such as length, thickness, width and/or surface evenness of a sheet in a position of use;
Figure 2 shows a diagrammatically presented lateral view of the apparatus according to figure 1 in a further position of use;
Figure 3 shows a diagrammatically presented plan view of the apparatus according to figure 2;
Figure 4 shows a perspective presentation of a view of the apparatus according to figures 1 and 2 with the transport device moved out.
According to figures 1 and 2, an apparatus R
according to the invention for measuring different parameters, such as length L, thickness D, width B of a sheet 1, has a measuring table 2 which is designed absolutely even and is fixed relative to a base 3. The _ 7 _ measuring table 2 may consist of high-grade steel or alternatively of granite.
The measuring table 2 overlaps on each side of a frame 4 as is also shown in figures 3 and 4. The frame 4 is correspondingly provided with rails, not given detailed reference numbers here, on which a transverse support 5 is arranged. The transverse support 5 overlaps the measuring table 2 and lies absolutely without play on both lateral frames 4 and can be moved thereon in the direction X illustrated. An upper measuring device 6.1 is arranged to be movable in the direction Y shown along the transverse support 5, see also figure 3.
Furthermore, a further transverse crosspiece 7 adjoins the measuring table 2 approximately at the end face at one end and preferably extends somewhat below the measuring table 2 between the two frames 4.
A lower measuring device 6.2 is reciprocally movable along this transverse crosspiece 7 in the direction Y shown, at right angles to the direction X.
The upper measuring device 6.1 is arranged across the frame 4, above the measuring table 2 to be movable in the direction X and/or Y.
At the end face, a conveyor device 8 adjoins the frame 4 or the transverse crosspiece 7 and delivers the respective sheets 1 to be measured.
As is further apparent from figures 1 and 4, at least one transport device 9 is assigned to the measuring table 2 and consists of a plurality of conveyor belts 10, preferably running in direction X, which are in each case spaced from one another. In this arrangement, the individual conveyor belts 10 are set into corresponding recesses 11. By means of an actuating _ g _ device 12, for example by means of a hydraulic cylinder, the transport device 9 with its conveyor belts 10 can be moved out from the plane of the measuring table 2 in order first to introduce a sheet 1 to be measured into the measuring table 2 and, by lowering of the conveyor belts 10, to lay it down and, after measurement, to raise the sheet 1 off the measuring table 2 and move it out from the apparatus R.
The mode of operation of the present invention is as follows:
To determine a thickness D of a sheet 1, the latter is introduced between two measuring devices 6.1, 6.2 aligned exactly one above the other and preferably arranged at the end face of the measuring table 2, as is shown in figure 1.
A distance between the two measuring devices 6.1, 6.2, which may be lasers, ultrasonic sensors or the like, is exactly known and defined or can be remeasured at any time.
After a defined introduction of the sheet 1 between the two measuring devices 6.1, 6.2, the latter are moved continuously and jointly in the direction Y
shown over the entire width B of the sheet 1. Continuous or intermittent measurements are made of the distance between the measuring device 6.1, 6.2 and the respective surface of the sheet 1.
As a result of the fact that, overall, a distance between two measuring devices 6.1, 6.2 is known, and each measuring device merely measures the distance between the measuring device and the surface of the sheet 1, the exact thickness D of the sheet 1 can be calculated and determined in a simple manner. The thickness D is the resultant of the total distance between the two measuring devices 6.1 and 6.2 without the introduced plate, less the distances of the two measuring devices 6.1, 6.2 from the respective sheet surface determined after the introduction of the sheet 1 between the two measuring devices 6.1, 6.2, in each case relative to one another. The two measuring devices 6.1, 6.2 lie exactly one above the other and are moved synchronously in the direction Y, a continuous but also an intermittent measurement, especially determination of the thickness D, being possible. The sheet 1 is preferably in a position of rest when the two measuring devices 6.1, 6.2 move over the complete width D.
After a complete passage and measurement of a thickness D across the complete width B, the sheet 1 is further introduced into the measuring table 2 by a selectable distance or section. Subsequently, the measuring device 6.1, 6.2 again moves in the direction Y
over the complete width B of the sheet 1 in order again to determine the thickness D of the sheet 1 continuously or intermittently or by sections at another, determinable point.
This operation is repeated until the sheet 1 has been completely measured in selectable sections and at selectable points, and especially its thickness has been intermittently determined. At the same time, the width B
of the sheet 1 can be exactly determined by the reciprocal movement of the measuring device 6.1 over the complete width B of the sheet 1.
After the thickness D and also the width B of the sheet 1 have been determined, the sheet 1 is completely moved into the measuring table 2 by means of the transport device 9 and laid on the measuring table 2 by lowering of the transport device 9, especially of the conveyor belts 10, in the direction Z.
Then the measuring device 6.1 is moved in the direction X shown relative to the frame 4, so that an exact length L of the sheet 1 can be determined. In order to determine the surface evenness and also the surface quality, the transverse support 5 is then moved in a selectable section relative to the sheet 1 in the direction X. Subsequently, the measuring device 6.1 is moved in the direction Y shown over the complete width of the sheet 1 and each individual point or each individual distance, relative to a selected and determinable point, from the sheet 1 is measured and recorded as data. The corrective value can now be taken into account as thickness D to determine the surface evenness which was measured previously.
In this manner, the surface evenness of the sheet 1 can also be determined exactly in terms of surface area, so that any uneven areas can be identified and must be reprocessed if necessary.
On complete determination of the length L of the sheet 1 and of the surface evenness of the sheet 1 over the width B and over the length L in determinable and sectionally determinable distances in the direction X or Y, the sheet 1 is raised by means of the transport device 9 and moved out of the measuring table 2 at the end face for further processing.
In this arrangement, each sheet can be assigned the corresponding data, for example by means of a code or the like, so that a separate individual data set relating to these data, such as thickness, length, width and also surface evenness, can be assigned for each sheet. These data can, for example, be used or analyzed in a subsequent production process, the idea here being partly to influence by this means, the production and also the manufacture of the sheet 1. These data can, for example, also be used for automatic mounting and for automatic setting of workpiece holders of manufacturing machines. No limit is placed here on the present invention.
As a result, three-dimensional measurement of a sheet, preferably an aluminum sheet, is made possible in a simple and very precise manner. It is also conceivable, before or after a measurement and also after a determinable period, to undertake an adjustment of the measuring device 6.1 by measuring distances relative to the measuring table 2. In this case, a reference value can be implemented by measuring intermittently in the directions X and/or Y over the complete measuring table 2.
List of numbered items 1 Sheet 34 67 2 Measuring table 35 68 3 Base 36 69 4 Frame 37 70 5 Transverse support38 71 6 Measuring device 39 72 7 Transverse crosspiece40 73 8 Conveying device 41 74 9 Transport device 42 75 10 Conveyor belt 43 76 11 Recess 44 77 12 Confirmation device45 78 j 47 17 I 50 R Apparatus i 18 ~
I
19 ;
20 !
21 54 L Length 22 'I
I
I
23 56 D Thickness 24 57 !
25 58 ~ B Width I
27 60 ! X Direction ' 28 61 , Y Direction I
29 62 ~I Z Direction
Claims (21)
1. A method for measuring various parameters, such as length (L), thickness (D), width (B) and/or surface evenness of at least one sheet (1), especially a metal sheet, at least one measuring device (6.1, 6.2), especially a laser, being directed onto the sheet (1), wherein, in order to measure the thickness (D) and/or width (B), the sheet (1) is introduced in a direction X
between two measuring devices (6.1, 6.2) arranged opposite one another to be movable in a direction Y.
between two measuring devices (6.1, 6.2) arranged opposite one another to be movable in a direction Y.
2. The method as claimed in claim 1, wherein, after the sheet (1) has been advanced by a selectable portion in the direction X, each of the measuring devices (6.1, 6.2), arranged one above the other and lying one upon the other, is moved synchronously to the other in the direction Y over the entire width (B) of the sheet (1), a distance to the sheet surface in each case being measured continuously or intermittently and deduced from a distance between the mutually spaced measuring devices 6.1, 6.2 to determine the thickness (D).
3. The method as claimed in claim 1 or 2, wherein one measuring device (6.2) subjects the plate (1) to the action of a laser from below and the other measuring device (6.1) does so from above, a distance between laser and sheet top surface and between laser and sheet bottom surface, respectively, being measured and deducted from a total distance between the two opposing measuring devices (6.1, 6.2) to determine the thickness (D).
4. The method as claimed in at least one of claims 1 to 3, wherein, as a result of the synchronous advance of the two measuring devices (6.1, 6.2), especially lasers, in the direction Y over the complete width (B), a thickness (D) is determined continuously and/or intermittently and by sections and the width (B) of the sheet (1) is determined.
5. The method as claimed in at least one of claims 1 to 4, wherein, as a result of additional, continuous and/or sectional advance of the sheet (1) in the direction X, a further measurement is carried out by advancing the two measuring devices (6.1, 6.2) in the direction Y.
6. The method as claimed in at least one of claims 1 to 5, wherein, after measuring of the thickness (D), over the width (B) and length (L) of the sheet (1), the latter is introduced into a planar measuring table (2).
7. The method as claimed in claim 6, wherein the sheet (1) is advanced by means of at least one transport device (9) over the measuring table (2), the sheet (1) being laid on the measuring table (2) by lowering the transport device (9) in a direction Z.
8. The method as claimed in claim 7, wherein, after the lowering of the transport device (9) and after the laying of the sheet (1) on the measuring table (2), the measuring device (6.1) is advanced over the sheet (1) in the directions X and Y in order to determine the surface evenness and/or width (B) and/or length (L) of the laid-down sheet (1).
9. The method as claimed in claim 8, wherein the upper measuring device (6.1) carries out, continuously and/or sectionally over the plate (1) in the direction X
and/or in the direction Y, individual or continuous measurements to determine the surface evenness, especially the complete length (L) and/or width (B), of the sheet (1).
and/or in the direction Y, individual or continuous measurements to determine the surface evenness, especially the complete length (L) and/or width (B), of the sheet (1).
10. The method as claimed in at least one of claims 1 to 9, wherein the upper measuring device (6.1) determines or measures the surface evenness of the sheet (1) at those positions in which a thickness measurement in the direction X and/or Y has been carried out.
11. The method as claimed in at least one of claims 7 to 10, wherein, in order to determine the surface evenness of the sheet (1) over the travel (X) and/or the travel (Y), individual measuring points are determined and/or compared with the ascertained thickness (D) by sections, the thickness being included in the calculation as a corrective factor to determine the surface evenness, a distance between measuring table (2) and measuring device (6.1) less an ascertained thickness (D) being used as a reference value for the respective measurements between measuring devices (6.1) and the surface of the sheet (1) in order to determine the surface evenness.
12. The method as claimed in at least one of claims 7 to 11, wherein, after the determination of the surface evenness and/or after the determination of the complete length (L) and/or width (B) and/or angularity of individual sides relative to one another, the upper measuring device (6.1) is moved back into its initial position and, at the same time or subsequently, the transport device (9) is moved out in order to move the sheet (1) out from the measuring table (2).
13. The method as claimed in at least one of claims 1 to 12, wherein, after determination of the parameters of a sheet (1), such as thickness (D), length (L), width (B), angularity and surface evenness, and surface quality if appropriate, based on the position and orientation of the sheet (1) in question, the latter is provided with a code under which the respective data ascertained is filed or stored.
14. The method as claimed in at least one of claims 1 to 13, wherein the respective measured and ascertained parameters such as thickness (D), width (B), length (L), surface evenness and angularity, based on the orientation of the sheet (1) are stored as data and passed on for the further processing of the sheet (1), for example in a processing center.
15. An apparatus for measuring various parameters, such as length (L), thickness (D), width (B) and/or surface evenness of at least one sheet (1), especially a metal sheet, at least one measuring device (6.1, 6.2), especially a laser, being directed onto the sheet (1), wherein, in order to measure the thickness (D) and/or width (B), the sheet (1) can be introduced by sections in a direction X between two measuring devices (6.1, 6.2) arranged opposite one another to be movable in a direction Y.
16. The apparatus as claimed in claim 15, wherein the at least one measuring device (6.1) is arranged on a frame (4) to be movable in a direction X and/or a direction Y.
17. The apparatus as claimed in claim 15 or 16, wherein the other measuring device (6.2) is arranged at the end face of a measuring table (2) and is arranged to be movable in a direction Y.
18. The apparatus as claimed in at least one of claims 15 to 17, wherein the at least one measuring table (2) is provided with at least one transport device (9) for moving the sheet (1) in and out onto or out of the measuring table (2), the transport device (9) having a plurality of conveyor belts (10) movable in the direction X.
19. The apparatus as claimed in claim 18, wherein the transport device (9) is arranged to be capable of outward or inward movement in the Z direction relative to the measuring table (2) to lay down and/or pick up the sheet (1).
20. The apparatus as claimed in at least one of claims 15 to 19, wherein each measuring device (6.1, 6.2) is assigned at least one laser, sensor or the like which is directed perpendicularly onto the sheet (1).
21. The apparatus as claimed in at least one of claims 18 to 20, wherein a plurality of conveyor belts (10) is arranged in corresponding recesses (11) in the at least one measuring table (2), the conveyor belts (10) especially the transport device (9) being capable of movement into or out of the measuring table (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2000113786 DE10013786A1 (en) | 2000-03-20 | 2000-03-20 | Parameter measurement method of aluminum plate, involves measuring parameters of plate using parameter measuring equipments arranged movably in specific directions with respect to plate |
| DE10013786.5 | 2000-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2341058A1 true CA2341058A1 (en) | 2001-09-20 |
Family
ID=7635639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2341058 Abandoned CA2341058A1 (en) | 2000-03-20 | 2001-03-19 | Method for measuring various parameters, such as length, thickness width and/or surface evenness, of at least one sheet |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2341058A1 (en) |
| DE (1) | DE10013786A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506790A (en) * | 2011-11-21 | 2012-06-20 | 重庆大学 | Device for automatically detecting row length of nuclear fuel dynamic pallets |
| CN106979848A (en) * | 2017-02-21 | 2017-07-25 | 武汉纺织大学 | A kind of cuboid cavity workpiece automatic detection device and method |
| US10184784B2 (en) | 2015-05-05 | 2019-01-22 | Micro-Epsilon Messtechnik Gmbh & Co. Kg | Device and method for measuring the width and thickness of a flat object |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006025506B4 (en) * | 2006-05-30 | 2011-03-31 | Rattunde & Co. Gmbh | Measuring device for several pipe sections |
| DE102016207656A1 (en) * | 2015-05-05 | 2016-11-10 | Micro-Epsilon Messtechnik Gmbh & Co. Kg | Measuring system with temperature compensation and device with such a measuring system |
| DE102016106772A1 (en) | 2016-04-13 | 2017-10-19 | Kmw-Engineering Gmbh | Method and device for identifying and / or sorting glass plates |
| CN109506575A (en) * | 2019-01-04 | 2019-03-22 | 吴洪榴 | A kind of detection device of the magnalium titanium alloy material production detection goodness of fit |
-
2000
- 2000-03-20 DE DE2000113786 patent/DE10013786A1/en not_active Withdrawn
-
2001
- 2001-03-19 CA CA 2341058 patent/CA2341058A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506790A (en) * | 2011-11-21 | 2012-06-20 | 重庆大学 | Device for automatically detecting row length of nuclear fuel dynamic pallets |
| CN102506790B (en) * | 2011-11-21 | 2013-06-26 | 重庆大学 | Device for automatically detecting row length of nuclear fuel dynamic pallets |
| US10184784B2 (en) | 2015-05-05 | 2019-01-22 | Micro-Epsilon Messtechnik Gmbh & Co. Kg | Device and method for measuring the width and thickness of a flat object |
| CN106979848A (en) * | 2017-02-21 | 2017-07-25 | 武汉纺织大学 | A kind of cuboid cavity workpiece automatic detection device and method |
| CN106979848B (en) * | 2017-02-21 | 2019-02-19 | 武汉纺织大学 | A kind of cuboid cavity workpiece automatic detection device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10013786A1 (en) | 2001-10-11 |
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