Device and method for determining the radius of a workpiece arc surface and arc surface processing equipment

Abstract

The embodiments of the present invention provide a device, method, and arc surface processing equipment for determining the radius of a workpiece arc surface, belonging to the field of detection technology. The device for determining the radius of a workpiece arc surface includes: a transverse movement mechanism; a laser rangefinder, arranged on the transverse movement mechanism, for vertically emitting a laser signal to the workpiece arc surface to measure the vertical distance between the laser signal point and the laser rangefinder; and a processor, configured to: control the transverse movement mechanism to move laterally a plurality of translation distances, wherein the number of the plurality of translation distances is not less than three; obtain a plurality of vertical distances corresponding to the plurality of translation distances measured by the laser rangefinder; and determine the radius of the workpiece arc surface based on the plurality of translation distances and the plurality of vertical distances. The embodiments of the present invention can reduce the manufacturing cost of the detection template.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, and in particular to a device and method for determining the radius of a workpiece arc surface and arc surface processing equipment. Background Art

[0002] In the prior art, after machining a section of a workpiece's arc surface, the workpiece must be transferred to a convenient location for inspection to determine whether the arc surface meets specified requirements. This inspection method typically involves an inspector holding a test template near the inside of the workpiece's arc surface, visually inspecting or measuring the gap between the test template and the workpiece's arc surface with a feeler gauge, and recording the inspection data to determine whether the workpiece's arc surface meets requirements. However, there are many different types of workpiece arc surfaces, and different arcs require different test templates, which leads to high manufacturing costs for the test templates. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a device and method for determining the radius of a workpiece arc surface, a processor and arc surface processing equipment, so as to solve the problem of high manufacturing cost of the detection template existing in the prior art.

[0004] In order to achieve the above-mentioned object, a first aspect of an embodiment of the present invention provides a device for determining the radius of a circular arc surface of a workpiece, the device comprising:

[0005] Transverse movement mechanism;

[0006] A laser rangefinder, provided on the transverse movement mechanism, for emitting a laser signal vertically toward the arc surface of the workpiece to measure the vertical distance between the laser signal point and the laser rangefinder; and

[0007] The processor is configured to:

[0008] Controlling the transverse movement mechanism to move laterally a plurality of translation distances, wherein the number of the plurality of translation distances is not less than three;

[0009] Obtaining multiple vertical distances corresponding to multiple translation distances measured by a laser rangefinder;

[0010] The radius of the arc surface of the workpiece is determined according to multiple translation distances and multiple vertical distances.

[0011] In an embodiment of the present invention, the processor is configured to determine the radius of the arc surface of the workpiece according to multiple translation distances and multiple vertical distances, including: the processor is configured to: determine the radius according to multiple translation distances and multiple vertical distances based on a preset model.

[0012] In an embodiment of the present invention, the processor is configured to determine the radius of the arc surface of the workpiece according to multiple translation distances and multiple vertical distances, including: the processor is configured to determine the radius according to the following formula:

[0013]

[0014] Among them, c1, c2, and c3 are multiple translation distances, m1, m2, and m3 are multiple vertical distances, d is the horizontal distance between the center of the workpiece arc surface and the initial position of the laser rangefinder, L is the vertical height between the center of the workpiece arc surface and the laser rangefinder, and R is the radius.

[0015] In an embodiment of the present invention, the transverse movement mechanism includes a transverse movement driving device, and the transverse movement driving device includes at least one of an electric driving device, a hydraulic driving device, and a pneumatic driving device.

[0016] A second aspect of an embodiment of the present invention provides a method for determining the radius of a circular arc surface of a workpiece, which is applied to a circular arc surface processing device. The circular arc surface processing device includes a transverse movement mechanism and a laser rangefinder disposed on the transverse movement mechanism. The laser rangefinder is used to vertically emit a laser signal toward the circular arc surface of the workpiece to measure the vertical distance between the laser signal point and the laser rangefinder. The method includes:

[0017] Controlling the transverse movement mechanism to move laterally a plurality of translation distances, wherein the number of the plurality of translation distances is not less than three;

[0018] Obtaining multiple vertical distances corresponding to multiple translation distances measured by a laser rangefinder;

[0019] The radius of the arc surface of the workpiece is determined according to multiple translation distances and multiple vertical distances.

[0020] In an embodiment of the present invention, determining the radius of the arc surface of the workpiece according to multiple translation distances and multiple vertical distances includes: determining the radius according to the multiple translation distances and multiple vertical distances based on a preset model.

[0021] In an embodiment of the present invention, determining the radius of the arc surface of the workpiece according to the multiple translation distances and the multiple vertical distances includes determining the radius according to the following formula:

[0022]

[0023] Among them, c1, c2, and c3 are multiple translation distances, m1, m2, and m3 are multiple vertical distances, d is the horizontal distance between the center of the workpiece arc surface and the initial position of the laser rangefinder, L is the vertical height between the center of the workpiece arc surface and the laser rangefinder, and R is the radius.

[0024] In an embodiment of the present invention, the transverse movement mechanism includes a transverse movement driving device, and the transverse movement driving device includes at least one of an electric driving device, a hydraulic driving device, and a pneumatic driving device.

[0025] A third aspect of an embodiment of the present invention provides a processor configured to execute the above-mentioned method for determining the radius of a circular arc surface of a workpiece.

[0026] A fourth aspect of an embodiment of the present invention provides an arc surface processing device, comprising: a transverse movement mechanism; a laser rangefinder, arranged on the transverse movement mechanism, for vertically emitting a laser signal to the arc surface of a workpiece to measure the vertical distance between the laser signal point and the laser rangefinder; and a processor according to the above.

[0027] The above technical solution controls the transverse movement mechanism to move laterally for multiple translation distances, and the laser rangefinder is arranged on the transverse movement mechanism. Thus, the transverse movement mechanism can be controlled to move laterally to drive the laser rangefinder to move laterally for multiple translation distances, and multiple vertical distances corresponding to the multiple translation distances measured by the laser rangefinder are obtained, so that the radius of the workpiece arc surface can be determined based on the multiple translation distances and the multiple vertical distances. The above solution does not require the use of detection templates with different curvatures to detect the arc of the workpiece arc surface, thereby reducing the manufacturing cost and management cost of the detection template. By providing a transverse movement mechanism and a laser rangefinder located on the transverse movement mechanism, it is only necessary to control the transverse movement mechanism to move laterally at least three times to determine the radius of the workpiece arc surface, thereby reducing the number of times the workpiece arc surface radius is detected, saving detection time and improving detection efficiency. In addition, there is no need for the detection personnel to check the gap between the detection template and the workpiece arc surface, thereby reducing the labor intensity of the operator and saving labor costs.

[0028] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present invention, but do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0030] Figure 1 The following schematically shows a schematic structural diagram of a device for determining the radius of a circular arc surface of a workpiece according to an embodiment of the present invention;

[0031] Figure 2 The following schematically illustrates a flow chart of a method for determining the radius of a workpiece arc surface in one embodiment of the present invention;

[0032] Figure 3 The following schematically shows the structure of an arc surface processing device according to an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of measuring the radius of a workpiece arc surface in the prior art in one embodiment of the present invention is shown schematically;

[0034] Figure 5 A schematic diagram of an arc surface processing device and a laser distance measuring device in one embodiment of the present invention is shown;

[0035] Figure 6 A schematic diagram of an arc surface processing device and a laser distance measuring device in one embodiment of the present invention is shown;

[0036] Figure 7 The structure diagram of the laser distance measuring device in one embodiment of the present invention is schematically shown;

[0037] Figure 8 The schematic diagram shows the principle of measuring the radius of the arc surface of a workpiece by a laser distance measuring device according to one embodiment of the present invention;

[0038] Figure 9 A schematic diagram showing the relative relationship between the radius of the arc surface of a workpiece, the translation distance and the vertical distance in one embodiment of the present invention;

[0039] Figure 10 The figure schematically shows the geometric relationship for calculating the radius of the arc surface of a workpiece in one embodiment of the present invention.

[0040] Description of Reference Numerals

[0041] 401 Front roller 402 Lower roller

[0042] 403 upper roller 404 rear roller

[0043] 405 Inspection sample 406 Workpiece arc surface

[0044] 701 Mounting bracket 702 Transverse movement mechanism

[0045] 703 Laser Rangefinder DETAILED DESCRIPTION

[0046] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not used to limit the embodiment of the present invention.

[0047] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0048] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] Figure 1 The following schematically shows the structure of a device for determining the radius of a workpiece arc surface in one embodiment of the present invention. Figure 1 As shown, in an embodiment of the present invention, a device for determining the radius of a circular arc surface of a workpiece is provided, which may include a transverse movement mechanism 102, a laser rangefinder 104 and a processor 106, wherein the laser rangefinder 104 is arranged on the transverse movement mechanism 102, and is used to vertically emit a laser signal to the circular arc surface of the workpiece to measure the vertical distance between the laser signal point and the laser rangefinder 104; the processor 106 is configured to: control the transverse movement mechanism 102 to move laterally for multiple translation distances, wherein the number of the multiple translation distances is not less than three; obtain multiple vertical distances corresponding to the multiple translation distances measured by the laser rangefinder 104; and determine the radius of the circular arc surface of the workpiece according to the multiple translation distances and the multiple vertical distances.

[0050] It can be understood that the transverse movement mechanism 102 is a structure or device that can move laterally, and the transverse movement mechanism 102 is provided with a laser rangefinder 104, which can drive the laser rangefinder 104 to move laterally. Furthermore, the transverse movement mechanism 102 can also include a driving device, such as a servo motor, which can drive the transverse movement mechanism 102 to move laterally, thereby driving the laser rangefinder 104 to move laterally. The laser rangefinder 104 can emit a laser signal vertically to the arc surface of the workpiece, so that the vertical distance between the laser signal point on the arc surface of the workpiece and the laser rangefinder 104 can be measured. The translation distance is the distance that the transverse movement mechanism 102 moves laterally, and its specific value can be pre-set or randomly set. The arc surface of the workpiece is the arc surface of the workpiece, which can be obtained by arc rolling the workpiece (for example, a steel plate) using arc surface processing equipment (for example, a plate rolling equipment).

[0051] Specifically, the processor 106 can control the transverse movement mechanism 102 to move laterally a certain translation distance. At this time, the processor 106 can control the laser rangefinder 104 to emit a laser signal vertically toward the arc surface of the workpiece. The laser rangefinder 104 can measure the vertical distance between the laser signal point on the arc surface of the workpiece and the laser rangefinder 104. The processor 106 can obtain the vertical distance measured by the laser rangefinder 104. Since the number of translation distances is required to be no less than three, the above operation needs to be repeated at least twice, that is, the processor 106 controls the transverse movement mechanism 102 to move laterally by different translation distances, and obtains the vertical distances measured by the laser rangefinder 104 corresponding to the different translation distances, wherein the translation distance and the vertical distance are in a one-to-one correspondence, so that multiple groups (at least three groups) of translation distances and vertical distances can be obtained, so that the radius of the arc surface of the workpiece can be determined based on the multiple groups of translation distances and vertical distances (that is, multiple translation distances and multiple vertical distances). Specifically, based on a pre-established algorithm model, multiple rotation angles and multiple measurement distances can be used as inputs of the algorithm model to obtain the output of the algorithm model, that is, the radius of the arc surface of the workpiece.

[0052] In the device for determining the radius of a workpiece arc surface, a processor controls a transverse mechanism to move laterally a plurality of translation distances, and a laser rangefinder is disposed on the transverse mechanism. The transverse mechanism can be controlled to move laterally to drive the laser rangefinder to move laterally a plurality of translation distances, and a plurality of vertical distances corresponding to the plurality of translation distances measured by the laser rangefinder are obtained. Thus, the radius of the workpiece arc surface can be determined based on the plurality of translation distances and the plurality of vertical distances. The device does not require the use of detection templates of different curvatures to detect the arc of the workpiece arc surface, thereby reducing the manufacturing and management costs of the detection templates. By providing a transverse mechanism and a laser rangefinder disposed on the transverse mechanism, the radius of the workpiece arc surface can be determined by controlling the transverse mechanism to move laterally at least three times. This reduces the number of times the workpiece arc surface radius is detected, saves detection time, and improves detection efficiency. Furthermore, the detection personnel do not need to check the gap between the detection template and the workpiece arc surface, thereby reducing the operator's labor intensity and saving labor costs.

[0053] In some embodiments, the device for determining the radius of the arc surface of the workpiece can be set on the arc surface processing equipment, or can be set separately, that is, not set on the arc surface processing equipment.

[0054] In one embodiment, the processor is configured to determine the radius of the arc surface of the workpiece according to multiple translation distances and multiple vertical distances, including: the processor is configured to: determine the radius according to the multiple translation distances and multiple vertical distances based on a preset model.

[0055] It can be understood that the preset model is a predetermined relationship between the translation distance, the vertical distance corresponding to the translation distance, and the radius of the workpiece arc surface, wherein the radius of the workpiece arc surface is positively correlated with the translation distance and the vertical distance, that is, the larger the translation distance or the vertical distance, the larger the radius of the workpiece arc surface.

[0056] Specifically, the processor may input a plurality of translation distances and a plurality of vertical distances into a preset model, thereby obtaining an output of the preset model, ie, the radius of the arc surface of the workpiece.

[0057] In an embodiment of the present application, by using multiple translation distances and multiple vertical distances as input quantities of a preset model, the radius of the arc surface of the workpiece can be directly determined based on the multiple translation distances and multiple vertical distances, thereby improving detection efficiency.

[0058] In one embodiment, the processor is configured to determine the radius of the arc surface of the workpiece according to a plurality of translation distances and a plurality of vertical distances, including: the processor is configured to determine the radius according to the following formula (1):

[0059]

[0060] Where c1, c2, and c3 are translation distances, m1, m2, and m3 are vertical distances, d is the horizontal distance between the center of the workpiece arc surface and the initial position of the laser rangefinder, L is the vertical height between the center of the workpiece arc surface and the laser rangefinder, and R is the radius of the workpiece arc surface. L and d are unknown values. The initial position of the laser rangefinder is the preset zero position of the laser rangefinder. At this time, the traverse mechanism is also in its initial position, corresponding to the zero position.

[0061] It can be understood that any one of the above formulas (1) can be converted into the following formula (2):

[0062] (d + c) 2 + (L + m) 2 = R 2 (2)

[0063] Among them, c is the translation distance, m is the vertical distance, d is the horizontal distance between the center of the workpiece arc surface and the initial position of the laser rangefinder, L is the vertical height between the center of the workpiece arc surface and the laser rangefinder, and R is the radius of the workpiece arc surface.

[0064] Specifically, the processor can substitute multiple translation distances c1, c2, c3 and multiple vertical distances m1, m2, m3 into the above formula (1), and perform conversion between the formulas such as subtraction, and finally obtain the specific value of the radius of the workpiece arc surface.

[0065] In the embodiment of the present application, the radius of the arc surface of the workpiece can be accurately obtained through the above specific formula, thereby improving the accuracy of the radius detection result.

[0066] In one embodiment, the traverse mechanism includes a speed reducer.

[0067] It can be understood that the reducer can make the moving distance of the transverse movement mechanism more accurate, thereby making the measurement result more accurate.

[0068] In one embodiment, the traverse mechanism includes a traverse drive device, and the traverse drive device includes at least one of an electric drive device, a hydraulic drive device, and a pneumatic drive device.

[0069] It is understood that the transverse drive device is used to drive the transverse movement of the transverse mechanism, and specifically may include an electric drive device and / or a hydraulic drive device and / or a pneumatic drive device. Furthermore, the electric drive device may include a servo motor, etc. In one embodiment, the transverse mechanism is driven by a servo motor to drive the lead screw and slide, and the slide precisely drives the laser rangefinder to perform transverse translation.

[0070] Figure 2 The following schematically shows a flow chart of a method for determining the radius of a workpiece arc surface in one embodiment of the present invention. Figure 2 As shown, in an embodiment of the present invention, a method for determining the radius of a circular arc surface of a workpiece is provided, which is applied to a circular arc surface processing device. The circular arc surface processing device includes a transverse movement mechanism and a laser rangefinder provided on the transverse movement mechanism. The laser rangefinder is used to vertically emit a laser signal to the circular arc surface of the workpiece to measure the vertical distance between the laser signal point and the laser rangefinder. The method is described by taking the application of the method to a processor as an example. The method may include the following steps:

[0071] Step S202 , controlling the transverse movement mechanism to move transversely a plurality of translation distances, wherein the number of the plurality of translation distances is not less than three.

[0072] Step S204: Acquire multiple vertical distances corresponding to multiple translation distances measured by the laser rangefinder.

[0073] Step S206 , determining the radius of the arc surface of the workpiece according to the multiple translation distances and the multiple vertical distances.

[0074] It can be understood that the transverse movement mechanism is a structure or device that can move laterally, and the transverse movement mechanism is provided with a laser rangefinder, which can drive the laser rangefinder to move laterally. Furthermore, the transverse movement mechanism can also include a driving device, such as a servo motor, which can drive the transverse movement mechanism to move laterally, thereby driving the laser rangefinder to move laterally. The laser rangefinder can emit a laser signal vertically to the arc surface of the workpiece, so that the vertical distance between the laser signal point on the arc surface of the workpiece and the laser rangefinder can be measured. The translation distance is the distance that the transverse movement mechanism moves laterally, and its specific value can be pre-set or randomly set. The arc surface of the workpiece is the arc surface of the workpiece, which can be obtained by arc rolling the workpiece (for example, a steel plate) using arc surface processing equipment (for example, a plate rolling equipment).

[0075] Specifically, the processor can control the transverse movement mechanism to move laterally by a certain translation distance. At this time, the processor can control the laser rangefinder to emit a laser signal vertically toward the arc surface of the workpiece. The laser rangefinder can measure the vertical distance between the laser signal point on the arc surface of the workpiece and the laser rangefinder, and the processor can obtain the vertical distance measured by the laser rangefinder. Since the number of translation distances is required to be no less than three, it is necessary to repeat the above operation at least twice, that is, the processor controls the transverse movement mechanism to move laterally by different translation distances, and obtains the vertical distances measured by the laser rangefinder corresponding to the different translation distances, wherein the translation distance and the vertical distance are in a one-to-one correspondence, thereby obtaining multiple groups (at least three groups) of translation distances and vertical distances, and thus determining the radius of the arc surface of the workpiece based on the multiple groups of translation distances and vertical distances (i.e., multiple translation distances and multiple vertical distances). Specifically, based on a pre-established algorithm model, multiple rotation angles and multiple measured distances can be used as inputs of the algorithm model to obtain the output of the algorithm model, i.e., the radius of the arc surface of the workpiece.

[0076] The above method for determining the radius of a workpiece's arc surface is achieved by controlling a transverse mechanism to move laterally a plurality of translation distances. A laser rangefinder is disposed on the transverse mechanism, thereby controlling the transverse mechanism to move laterally to drive the laser rangefinder to move laterally a plurality of translation distances, and obtaining a plurality of vertical distances corresponding to the plurality of translation distances measured by the laser rangefinder. Thus, the radius of the workpiece's arc surface can be determined based on the plurality of translation distances and the plurality of vertical distances. The above method does not require the use of detection templates of different curvatures to detect the arc of the workpiece's arc surface, thereby reducing the manufacturing and management costs of the detection templates. By providing a transverse mechanism and a laser rangefinder disposed on the transverse mechanism, the radius of the workpiece's arc surface can be determined by simply controlling the transverse mechanism to move laterally at least three times. This reduces the number of times the workpiece's arc surface radius is detected, saves detection time, and improves detection efficiency. Furthermore, the detection personnel do not need to check the gap between the detection template and the workpiece's arc surface, thereby reducing the operator's labor intensity and saving labor costs.

[0077] In one embodiment, determining the radius of the arc surface of the workpiece according to a plurality of translation distances and a plurality of vertical distances includes: determining the radius according to the plurality of translation distances and the plurality of vertical distances based on a preset model.

[0078] It can be understood that the preset model is a predetermined relationship between the translation distance, the vertical distance corresponding to the translation distance, and the radius of the workpiece arc surface, wherein the radius of the workpiece arc surface is positively correlated with the translation distance and the vertical distance, that is, the larger the translation distance or the vertical distance, the larger the radius of the workpiece arc surface.

[0079] Specifically, the processor may input a plurality of translation distances and a plurality of vertical distances into a preset model, thereby obtaining an output of the preset model, ie, the radius of the arc surface of the workpiece.

[0080] In an embodiment of the present application, by using multiple translation distances and multiple vertical distances as input quantities of a preset model, the radius of the arc surface of the workpiece can be directly determined based on the multiple translation distances and multiple vertical distances, thereby improving detection efficiency.

[0081] In one embodiment, the radius of the arc surface of the workpiece is determined according to the multiple translation distances and the multiple vertical distances, including determining the radius according to the following formula (1):

[0082]

[0083] Where c1, c2, and c3 are translation distances, m1, m2, and m3 are vertical distances, d is the horizontal distance between the center of the workpiece's arc surface and the initial position of the laser rangefinder, L is the vertical height between the center of the workpiece's arc surface and the laser rangefinder, and R is the radius. L and d are unknown values. The initial position of the laser rangefinder is the preset zero position of the laser rangefinder. At this time, the traverse mechanism is also in its initial position, corresponding to the zero position.

[0084] It can be understood that any one of the above formulas (1) can be converted into the following formula (2):

[0085] (d + c) 2 + (L + m) 2 = R 2 (2)

[0086] Among them, c is the translation distance, m is the vertical distance, d is the horizontal distance between the center of the workpiece arc surface and the initial position of the laser rangefinder, L is the vertical height between the center of the workpiece arc surface and the laser rangefinder, and R is the radius of the workpiece arc surface.

[0087] Specifically, the processor can substitute multiple translation distances c1, c2, c3 and multiple vertical distances m1, m2, m3 into the above formula (1), and perform conversion between the formulas such as subtraction, and finally obtain the specific value of the radius of the workpiece arc surface.

[0088] In the embodiment of the present application, the radius of the arc surface of the workpiece can be accurately obtained through the above specific formula, thereby improving the accuracy of the radius detection result.

[0089] In one embodiment, the traverse mechanism includes a speed reducer.

[0090] It can be understood that the reducer can make the moving distance of the transverse movement mechanism more accurate, thereby making the measurement result more accurate.

[0091] In one embodiment, the traverse mechanism includes a traverse drive device, and the traverse drive device includes at least one of an electric drive device, a hydraulic drive device, and a pneumatic drive device.

[0092] It is understood that the transverse drive device is used to drive the transverse movement of the transverse mechanism, and specifically may include an electric drive device and / or a hydraulic drive device and / or a pneumatic drive device. Furthermore, the electric drive device may include a servo motor, etc. In one embodiment, the transverse mechanism is driven by a servo motor to drive the lead screw and slide, and the slide precisely drives the laser rangefinder to perform transverse translation.

[0093] An embodiment of the present invention provides a processor configured to execute the above method for determining the radius of a circular arc surface of a workpiece.

[0094] An embodiment of the present invention provides an arc surface processing device, including: a transverse movement mechanism; a laser rangefinder, arranged on the transverse movement mechanism, for vertically emitting a laser signal to the arc surface of a workpiece to measure the vertical distance between the laser signal point and the laser rangefinder; and a processor according to the above embodiment.

[0095] It can be understood that the arc surface processing equipment is a processing equipment used to process the arc surface of the workpiece, which may include cutting equipment, machining equipment, forming equipment and casting equipment, etc. The forming equipment is such as a plate rolling equipment, etc. The plate rolling equipment is such as a four-roll plate rolling machine, etc.

[0096] In one embodiment, the arc surface processing equipment may include a four-roll plate rolling machine, which is a device that uses four working rollers to roll the arc surface of a workpiece (for example, a steel plate) into shape. Figure 3 In the prior art, taking a four-roll plate rolling machine as an example, after the four-roll plate rolling machine completes the arc surface of a workpiece, the workpiece needs to be transferred to a position convenient for detection in order to detect the radius value of the arc surface of the workpiece, such as Figure 4The inspector holds the inspection template against the inside of the arc surface, measures the gap between the template and the workpiece by visual inspection or with a feeler gauge, and then records the inspection data and determines whether the workpiece is qualified, that is, whether the arc surface radius of the workpiece is qualified.

[0097] The disadvantages of the above-mentioned prior art are as follows: 1. There are many types of workpieces, and different arc surface radii require different test templates. A large number of test templates need to be managed on the production site, which increases the template manufacturing cost and management cost. 2. In order to avoid finding that the arc surface is unqualified after the entire arc surface is rolled, the arc needs to be tested during the rolling process. An inspection is required for every 200mm long roll of the arc surface. When the length of the arc surface is long, the number of inspections will be very large, which consumes a lot of inspection time and reduces production efficiency. 3. Since the arc surface inspection can only be performed on the equipment, it is inconvenient for the inspectors to view or measure the gap between the inspection template and the workpiece. Therefore, the labor intensity of the inspectors is high, which reduces production efficiency.

[0098] In a specific embodiment, a four-roll plate rolling machine is used as an example to illustrate the arc surface processing equipment. A detection device based on a laser rangefinder is provided to realize the automatic detection function of the arc surface radius. This solution installs a set of laser rangefinders above the discharge side of the four-roll plate rolling machine. Figure 5 and Figure 6 The laser distance measuring device may include a transverse movement mechanism with a reducer, on which a laser distance measuring device is mounted. The transverse movement mechanism may be driven by a servo motor to drive a lead screw and a slide, and the slide may accurately drive the laser distance measuring device to perform transverse translation, as shown. Figure 7 shown.

[0099] The principle of measuring the radius of the arc surface of the workpiece by the laser distance measuring device is shown in Figure 8 As shown, when installing the laser rangefinder, make sure the laser signal emitted by the laser rangefinder is perpendicular to the horizontal plane. Move the laser rangefinder to the horizontal plane before measuring the distance. Figure 7 The leftmost position is shown and the horizontal position is set to zero.

[0100] During distance measurement, a servo motor drives the laser rangefinder to a certain position, then transmits the servo motor's code value to the four-roll plate rolling machine's industrial computer. After calculation, the translation distance c is obtained. At the same time, the laser rangefinder measures the distance, obtains the vertical distance m from the laser rangefinder to the workpiece arc, and transmits the m value to the industrial computer.

[0101] according to Figure 9 The relative relationship between the arc radius R, translation distance c, and vertical distance m can be plotted as Figure 10 The geometric calculation relationship diagram of the arc surface radius R is shown. According to the geometric relationship shown in the figure, the following formula can be listed:

[0102] (d+c)2 +(L+m) 2 =R 2

[0103] In this formula, the a value and r value are known values, and the L value, d value and R value are unknown values. L is the vertical distance between the center of the arc surface of the workpiece and the laser rangefinder, and d is the horizontal distance between the center of the arc surface of the workpiece and the laser rangefinder.

[0104] In this formula, the translation distance c and the vertical distance m are known values, while the horizontal distance d between the center of the workpiece arc surface and the initial position of the laser rangefinder, the vertical height L between the center of the workpiece arc surface and the laser rangefinder, and the radius R of the workpiece arc surface are unknown.

[0105] The formula after conversion is: 2·c·d+2·m·L+c 2 +m 2 =R 2 -2-L 2

[0106] According to the equipment principle, the translation distance c and vertical distance m can be obtained by the servo motor and laser rangefinder.

[0107] When measuring the arc radius R in this solution, the traverse mechanism will be translated three times and three distance measurements will be performed. The three corresponding sets of translation distances c and vertical distances m can be obtained, namely c1, m1, c2, m2, c3, and m3, and the following equations can be obtained:

[0108]

[0109] Subtract equation ① from equation ②, and vice versa, we can get:

[0110]

[0111] Solving the linear equation with two variables can give the values ​​of L and d, and substituting them into formula ① can give the value of the radius R of the arc surface.

[0112] The above calculation process is all performed by the industrial computer, and the calculation result R value is displayed on the screen and saved in the equipment operation record.

[0113] For example, the design length of the arc in a workpiece drawing is 350mm, and the radius R0 = 500mm. The workpiece is measured three times with translation distances c1 = 80, c2 = 120, and c3 = 160, respectively. The corresponding vertical distances are m1 = 216.5mm, m2 = 199.0mm, and m3 = 177.1mm. Substituting them into the equation yields:

[0114]

[0115] Solving the linear equation with two variables gives L = 253.938 and d = 101.989.

[0116] Substituting the L value and d value into formula ①, we can obtain the measured radius of the arc R = 504.413mm.

[0117] Testing revealed that when the ends of the 350mm-long arcs R0 = 500mm and R = 504.413mm overlap, the maximum gap between them is 0.28mm, meeting the measurement accuracy requirement of less than 1mm. This error stems from the accuracy of the device's translational displacement c and vertical distance m. Currently, the displacement accuracy of common lead screw guides in industrial production can reach 0.02mm, and the ranging accuracy of common laser rangefinders can reach 0.02mm, fully meeting the accuracy requirements for translational displacement c and vertical distance m in this example.

[0118] Furthermore, in some embodiments, the laser rangefinder's clamping, fixing, and translational methods can be replaced by other structural forms. For example, a telescopic linkage mechanism can be used instead of a screw-slide mechanism to translate the laser rangefinder. The laser rangefinder's translational drive can be replaced by a hydraulic, pneumatic, or other drive mechanism. Numerical calculations can be performed using systems such as a PLC or single-chip microcomputer for communication, calculation, display, and storage. Other types of equipment can be used to process arc surfaces, such as cutting equipment, machining equipment, casting equipment, and 3D printing equipment.

[0119] In summary, the embodiments of the present application utilize a laser rangefinder and its associated device to automatically measure the radius of a workpiece's arc surface. This solution eliminates the need for a test template, thus resolving the challenges of preparing and managing test templates. This solution measures the radius of a workpiece's arc surface in a short time, for example, measuring once in approximately 15 seconds. This significantly improves inspection efficiency, reduces production support time, and increases production efficiency. It also eliminates the need for inspection personnel, saving labor costs.

[0120] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0121] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0122] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0123] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0124] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0125] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0126] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0127] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0128] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A device for determining the radius of a workpiece arc surface, characterized in that: The device comprises: Transverse movement mechanism; A laser rangefinder, provided on the transverse movement mechanism, for emitting a laser signal vertically toward the arc surface of the workpiece to measure the vertical distance between the laser signal point and the laser rangefinder; and The processor is configured to: Controlling the transverse movement mechanism to move laterally a plurality of translation distances, wherein the number of the plurality of translation distances is not less than three; Acquire a plurality of vertical distances corresponding to the plurality of translation distances measured by the laser rangefinder; Determining the radius of the arc surface of the workpiece according to the multiple translation distances and the multiple vertical distances; The processor is configured to determine the radius of the arc surface of the workpiece according to the multiple translation distances and the multiple vertical distances, including: the processor is configured to determine the radius according to the following formula: in, 、 2. are the multiple translation distances, 、 、 is a multiple of the vertical distances, is the horizontal distance between the center of the arc surface of the workpiece and the initial position of the laser rangefinder, is the vertical height between the center of the arc surface of the workpiece and the laser rangefinder, is the radius.

2. The device according to claim 1, characterized in that The transverse movement mechanism includes a transverse movement driving device, and the transverse movement driving device includes at least one of an electric driving device, a hydraulic driving device and a pneumatic driving device.

3. A method for determining the radius of a workpiece arc surface, characterized in that: Applied to arc surface processing equipment, the arc surface processing equipment includes a transverse movement mechanism and a laser rangefinder arranged on the transverse movement mechanism, the laser rangefinder is used to vertically emit a laser signal to the arc surface of the workpiece to measure the vertical distance between the laser signal point and the laser rangefinder, the method includes: controlling the transverse movement mechanism to move laterally a plurality of translation distances, wherein the number of the plurality of translation distances is not less than three; Acquire a plurality of vertical distances corresponding to the plurality of translation distances measured by the laser rangefinder; Determining the radius of the arc surface of the workpiece according to the multiple translation distances and the multiple vertical distances; Wherein, determining the radius of the arc surface of the workpiece according to the multiple translation distances and the multiple vertical distances includes determining the radius according to the following formula: in, 、 2. are the multiple translation distances, 、 、 is a multiple of the vertical distances, is the horizontal distance between the center of the arc surface of the workpiece and the initial position of the laser rangefinder, is the vertical height between the center of the arc surface of the workpiece and the laser rangefinder, is the radius.

4. The method according to claim 3, characterized in that The transverse movement mechanism includes a transverse movement driving device, and the transverse movement driving device includes at least one of an electric driving device, a hydraulic driving device and a pneumatic driving device.

5. A processor, characterized in that: The method is configured to execute the method for determining the radius of a circular arc surface of a workpiece according to claim 3 or 4.

6. A circular arc surface processing equipment, characterized in that: include: Transverse movement mechanism; A laser rangefinder, provided on the transverse movement mechanism, for emitting a laser signal vertically toward the arc surface of the workpiece to measure the vertical distance between the laser signal point and the laser rangefinder; and The processor according to claim 5.

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