Dimension measurement equipment and dimension measurement method thereof

Abstract

The invention relates to detection equipment, and discloses size measurement equipment and a size measurement method thereof. A size measurement device comprises a detection area, a first line laser profile measuring instrument, a second line laser profile measuring instrument, a first visual detection assembly, a second visual detection assembly, a mounting seat and a positioning reference visual detection assembly. And the first line laser profile measuring instrument is arranged at the top of the detection area and reciprocates along the X axis, the Y axis and the Z axis of the detection area, and a light beam of the first line laser profile measuring instrument irradiates in the direction in which an inclined angle is formed between the light beam and the plane of the detection area. The second line laser profile measuring instrument is arranged on the side of the first line laser profile measuring instrument, performs Y-axis and Z-axis repeated movement along with the first line laser profile measuring instrument along the detection area, and performs X-axis movement along the direction of the first line laser profile measuring instrument; and the irradiation direction of the second line laser profile measuring instrument is opposite to or back to the irradiation direction of the first line laser profile measuring instrument.

Description

TECHNICAL FIELD

[0001] The present application relates to a detection device, in particular to a size measurement device and a size measurement method thereof. BACKGROUND

[0002] With the continuous improvement of the precision requirements of smart phone structural parts, the size precision of the middle frame of the mobile phone and the frame of the tablet computer has an important influence on the assembly performance of the whole machine as a key component connecting the screen and the back cover.

[0003] The existing measurement method for the side of the middle frame of the mobile phone and the frame of the tablet computer still has the following problems: the current fixed or limited adjustment structure of prism, single laser and single vision detection component has limitations when detecting the characteristics around the workpiece. Due to the relatively fixed detection angle, it is difficult to synchronously obtain the complete characteristic information of the workpiece on both sides, and multiple adjustments of the workpiece position or equipment parameters are often required, resulting in a relatively complicated detection process and reducing the measurement efficiency. At the same time, due to the limitation of the observation angle, there may be a situation that the local characteristics are not fully recognized, and the convenience of detection is not high for workpieces with complex characteristics.

[0004] Therefore, there is an urgent need for a size measurement device and a size measurement method to solve the above problems. SUMMARY

[0005] Based on the above, the purpose of the present application is to provide a size measurement device and a size measurement method to solve the problem of middle frame size detection.

[0006] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0007] A size measurement device, comprising:

[0008] a detection area;

[0009] a first line laser profilometer arranged at the top of the detection area and repeatedly moving along the X, Y and Z axes of the detection area, the light beam of the first line laser profilometer being irradiated in a direction with an inclined angle with the plane of the detection area;

[0010] a second line laser profilometer arranged at the side of the first line laser profilometer and repeatedly moving along the Y and Z axes of the detection area together with the first line laser profilometer, moving along the X axis in the direction of the first line laser profilometer, the irradiation direction of the second line laser profilometer being opposite or opposite to the irradiation direction of the first line laser profilometer;

[0011] A first visual detection assembly is arranged at the side of the first line laser profile measuring instrument, and moves repeatedly along the detection area along the Y axis together with the first line laser profile measuring instrument. The first visual detection assembly can move along the detection area along the X and Z axes. The first visual detection assembly takes pictures along a direction parallel to the detection area.

[0012] A second visual detection assembly is arranged at the side of the first visual detection assembly, and moves repeatedly along the Y and Z axes together with the first visual detection assembly. The second visual detection assembly moves along the X axis along the direction of the first visual detection assembly. The picture taking direction of the second visual detection assembly is opposite to that of the first visual detection assembly.

[0013] A mounting seat is arranged in the detection area and at the bottom of the first line laser profile measuring instrument. The mounting seat can rotate and move repeatedly along the Y and Z axes along the detection area.

[0014] A positioning reference visual detection assembly is arranged at the side of the first line laser profile measuring instrument, so that stable reference coordinates can be obtained synchronously during laser detection.

[0015] As a preferred scheme of the size measuring device, a first driving assembly is connected to the first line laser profile measuring instrument and the first visual detection assembly. The first driving assembly is used to drive the first line laser profile measuring instrument to move repeatedly along the Y axis along the detection area.

[0016] The first driving assembly includes a rack and a first Y axis driving source. The rack is arranged at the top of the detection area. The first Y axis driving source is arranged at the top of the detection area. The rack is arranged at the output end of the first Y axis driving source. The first line laser profile measuring instrument and the first visual detection assembly are arranged on the rack.

[0017] A second driving assembly is arranged between the rack and the first line laser profile measuring instrument and between the rack and the first visual detection assembly, respectively. The second driving assembly drives the first line laser profile measuring instrument and the first visual detection assembly to move along the X and Z axes, respectively.

[0018] The second driving assembly comprises a first X-axis driving source, a second X-axis driving source, a first Z-axis driving source and a second Z-axis driving source, the first X-axis driving source and the second X-axis driving source are respectively installed on two sides of the rack, the first Z-axis driving source and the second Z-axis driving source are respectively installed on output ends of the first X-axis driving source and the second X-axis driving source, the first line laser profile measuring instrument is installed on an output end of the first Z-axis driving source, the second line laser profile measuring instrument is installed on an output end of the second Z-axis driving source, and the first visual detection assembly is installed on an output end of the second Z-axis driving source.

[0019] The third driving assembly is further installed between the output end of the first Z-axis driving source and the second line laser profile measuring instrument, and between the output end of the second Z-axis driving source and the second visual detection assembly.

[0020] The third driving assembly comprises a third X-axis driving source and a fourth X-axis driving source, the third X-axis driving source is installed on the output end of the first Z-axis driving source, the second line laser profile measuring instrument is installed on an output end of the third X-axis driving source, the fourth X-axis driving source is installed on the output end of the second Z-axis driving source, and the second visual detection assembly is installed on an output end of the fourth X-axis driving source.

[0021] The fourth driving assembly is further installed on the bottom of the detection area, the fourth driving assembly is connected to the mounting seat, and the fourth driving assembly is used for driving the mounting seat to repeatedly move along the Y and Z axes.

[0022] The fourth driving assembly comprises a second Y-axis driving source and a third Z-axis driving source, the third Z-axis driving source is installed on an output end of the second Y-axis driving source, and the mounting seat is rotatably installed on an output end of the third Z-axis driving source.

[0023] As a preferred scheme of the size measuring device, the workbench is further used for installing the first driving assembly, the second driving assembly, the third driving assembly and the fourth driving assembly.

[0024] As a preferred scheme of the size measuring device, the workbench is further provided with a sliding rail, the sliding rail is used for guiding each driving source, so that each line laser profile measuring instrument and the visual detection assembly move along a preset path.

[0025] As a preferred scheme of the size measuring device, each driving source is connected with the workbench through an auxiliary chain, one end of the auxiliary chain is connected with an output end of the driving source, and the other end is connected with the workbench.

[0026] As a preferred solution of the size measuring device, the mounting seat is provided at least two to form a double station to realize alternate operation.

[0027] A size measuring method suitable for a size measuring device, the steps are as follows:

[0028] S1: fixing the workpiece on the mounting seat, the fourth driving assembly drives the mounting seat to move along the Y and Z axes, and the rotary driving source adjusts the angle of the workpiece;

[0029] S2: the first line laser profile measuring instrument moves in the X, Y and Z axis directions to the position of the mounting seat to measure the three-dimensional size features of one side of the workpiece;

[0030] S3: the second line laser profile measuring instrument moves along with the first line laser profile measuring instrument in the Y and Z axes, and moves away from or close to the first line laser profile measuring instrument in the X axis to detect the three-dimensional features of the other side of the workpiece;

[0031] S4: the first vision detection assembly moves along with the first line laser profile measuring instrument in the Y axis, and the first vision detection assembly can independently move in the X and Z axes along the detection area, and the first vision detection assembly detects the planar features of one side of the workpiece;

[0032] S5: the second vision detection assembly moves along with the first vision detection assembly in the Y and Z axes, and moves away from or close to the first vision detection assembly in the X axis to detect the planar features of the other side of the workpiece.

[0033] As a preferred solution of the size measuring method, S1 further includes S1-1: fixing the workpiece on the mounting seat, and the positioning reference vision detection assembly synchronously captures the mounting seat as a reference mark to establish a global coordinate system.

[0034] As a preferred solution of the size measuring method, S2 further includes S2-1: the first driving assembly drives the rack to move along the Y axis, the first line laser profile measuring instrument moves synchronously with the rack, and at the same time, the second driving assembly drives the first line laser profile measuring instrument to adjust the position along the X and Z axes to scan the three-dimensional features of one side of the workpiece at an inclined angle; S3 further includes S3-1: the first driving assembly simultaneously drives the second driving assembly, the third driving assembly and the second line laser profile measuring instrument to move along the Y axis, the second line laser profile measuring instrument moves along the Z axis together with the first line laser profile measuring instrument, and the third driving assembly drives the second line laser profile measuring instrument to move along the X axis to approach / away from the first line laser profile measuring instrument to scan the three-dimensional features of the other side of the workpiece.

[0035] As a preferred solution of the method of size measurement, S4-1 is further included in S4: the first visual detection assembly moves along the Y axis with the rack, and the second driving assembly independently adjusts the X and Z axis positions of the first visual detection assembly to shoot the planar features on one side of the workpiece in parallel;

[0036] S5-1 is further included in S5: the second visual detection assembly moves along the Y and Z axes with the first visual detection assembly, and the fourth X axis driving source drives the second visual detection assembly to adjust along the X axis to shoot and measure the planar features on the other side of the workpiece.

[0037] The beneficial effects of the present application are: by setting the positioning reference visual detection assembly, synchronously moving with the first line laser profile measurement instrument, the stable reference coordinates can be synchronously obtained during laser detection, a three-dimensional coordinate system is established, the change of the reference point coordinates is compared in real time during the detection process, the measurement error caused by the slight displacement of the workpiece is automatically corrected, and the consistency of the long-term detection accuracy is ensured. The linkage structure composed of double lasers (the first line laser profile measurement instrument can move along the X, Y and Z axes, and the second line laser profile measurement instrument moves along the Y and Z axes with the first line laser profile measurement instrument and independently adjusts along the X axis) and double visual detection assemblies (the first visual detection assembly moves along the Y axis with the laser and can independently adjust along the X and Z axes, and the second visual detection assembly moves along the Y and Z axes with the first visual detection assembly and independently adjusts along the X axis) can not only synchronously complete the accurate detection of the three-dimensional and planar features around the workpiece when the mounting seat rotates and the positions of the Y and Z axes change, but also effectively simplify the measurement process, and forms a full-range visual angle of the workpiece for full-size detection, which greatly improves the detection efficiency and especially meets the batch detection needs of complex multi-feature workpieces. At the same time, the corresponding detection mode of the double lasers and the double visual detection assemblies avoids the measurement blind area of a single visual angle, effectively reduces the measurement error in combination with the positioning stability brought by the linkage of the assemblies, guarantees the accuracy and consistency of the size data, and improves the practicality and application range of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 The overall structure schematic diagram of the size measurement device provided by the present application is shown.

[0039] Figure 2 The overall structure schematic diagram of the size measurement device provided by the present application is shown.

[0040] Figure 3 The overall structure schematic diagram of the size measurement device provided by the present application is shown.

[0041] Figure 4 The overall structure schematic diagram of the size measurement device provided by the present application is shown.

[0042] Figure 5 A schematic diagram of the overall structure of a fourth driving assembly in a size measuring device according to the present application is shown in the figure;

[0043] Figure 6 A schematic diagram of the overall structure of a third driving assembly in a size measuring device according to the present application is shown in the figure;

[0044] Figure 7 A schematic diagram of the steps of a size measuring method according to the present application is shown in the figure;

[0045] Figure 8 A S1-1 schematic diagram of a size measuring method according to the present application is shown in the figure;

[0046] Figure 9 A S2-1 schematic diagram of a size measuring method according to the present application is shown in the figure;

[0047] Figure 10 A S3-1 schematic diagram of a size measuring method according to the present application is shown in the figure;

[0048] Figure 11 A S4-1 schematic diagram of a size measuring method according to the present application is shown in the figure;

[0049] Figure 12 A S5-1 schematic diagram of a size measuring method according to the present application is shown in the figure.

[0050] In the figures, the various reference numerals are:

[0051] 1, detection area; 2, first line laser profilometer; 3, second line laser profilometer; 4, first vision detection assembly; 5, second vision detection assembly; 6, mounting seat; 7, positioning reference vision detection assembly;

[0052] 8, first driving assembly; 801, rack; 802, first Y-axis driving source;

[0053] 9, second driving assembly; 901, first X-axis driving source; 902, second X-axis driving source; 903, first Z-axis driving source; 904, second Z-axis driving source;

[0054] 10, third driving assembly; 101, third X-axis driving source; 102, fourth X-axis driving source;

[0055] 11, fourth driving assembly; 111, second Y-axis driving source; 112, third Z-axis driving source; 12, rotary driving source;

[0056] 14, slide rail; 16, workbench. DETAILED DESCRIPTION

[0057] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely exemplary of the application and that the application is not limited to such exemplary embodiments. It should also be understood that, in the description of the application, the terms "connected" and "connection" are used in a broad sense and can be used deceptively, for example, fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0058] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0059] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0060] In the description of the present embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0061] In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, the terms "first", "second" are only used to distinguish in the description and have no special meaning.

[0062] In one embodiment of the present application, as shown in Figures 1-6 A size measuring device is provided, comprising: a detection area 1, a first line laser profile measuring instrument 2, a second line laser profile measuring instrument 3, a first visual detection assembly 4, a second visual detection assembly 5, a mounting seat 6 and a positioning reference visual detection assembly 7.

[0063] The first line laser profile measuring instrument 2 is arranged on the top of the detection area 1 and repeatedly moves along the X, Y and Z axes of the detection area 1, and the light beam of the first line laser profile measuring instrument 2 is irradiated in the direction with an inclined angle with the plane of the detection area 1. The second line laser profile measuring instrument 3 is arranged on the side of the first line laser profile measuring instrument 2 and repeatedly moves along the Y and Z axes of the detection area 1 together with the first line laser profile measuring instrument 2, moves along the X axis in the direction of the first line laser profile measuring instrument 2, and the irradiation direction of the second line laser profile measuring instrument 3 is opposite to or opposite to the irradiation direction of the first line laser profile measuring instrument 2. The first visual detection assembly 4 is arranged on the side of the first line laser profile measuring instrument 2 and repeatedly moves along the Y axis of the detection area 1 together with the first line laser profile measuring instrument 2, and the first visual detection assembly 4 can move along the X and Z axes of the detection area 1, and the first visual detection assembly 4 is photographed in the direction parallel to the detection area 1. The second visual detection assembly 5 is arranged on the side of the first visual detection assembly 4 and repeatedly moves along the Y and Z axes together with the first visual detection assembly 4, and moves along the X axis in the direction of the first visual detection assembly 4, and the shooting direction of the second visual detection assembly 5 is opposite to the shooting direction of the first visual detection assembly 4. The mounting seat 6 is arranged in the detection area 1 and arranged on the bottom of the first line laser profile measuring instrument 2, and can repeatedly move along the Y and Z axes of the detection area 1. The positioning reference visual detection assembly 7 is arranged on the side of the first line laser profile measuring instrument 2, so that the stable reference coordinates can be obtained synchronously during laser detection.

[0064] The size measuring device provided by the application can realize synchronous movement with the first line laser profile measuring instrument 2 by setting the positioning reference visual detection assembly 7, can obtain stable reference coordinates synchronously during laser detection, can establish a three-dimensional coordinate system, can compare the coordinate changes of the reference points in real time during the detection process, can automatically correct the measurement errors caused by the slight displacement of the workpiece, and can ensure the consistency of the long-term detection accuracy. The linkage structure composed of the double lasers (the first line laser profile measuring instrument 2 can move along the X, Y and Z axes, and the second line laser profile measuring instrument 3 moves along the Y and Z axes and independently adjusts along the X axis) and the double visual detection assemblies (the first visual detection assembly 4 moves along the Y axis with the laser and can independently adjust along the X and Z axes, and the second visual detection assembly 5 moves along the Y and Z axes with the laser and independently adjusts along the X axis) can not only synchronously complete the accurate detection of the three-dimensional and planar features around the workpiece when the mounting seat 6 rotates and the positions of the Y and Z axes change, but also effectively simplify the measurement process, and forms a full range of visual angles of the workpiece, so that the full size detection of the workpiece is realized, and the detection efficiency is greatly improved. Especially, the linkage structure meets the batch detection requirements of complex multi-feature workpieces. At the same time, the corresponding detection mode of the double lasers and the double visual detection assemblies avoids the measurement blind area of a single visual angle, effectively reduces the measurement error by combining the positioning stability brought by the linkage of the assemblies, guarantees the accuracy and consistency of the size data, and improves the practicability and application range of the device.

[0065] In the embodiment, the first visual detection assembly 4 and the second visual detection assembly 5 can be composed of a camera, a lens and a light source, and can replace manual detection of bar code characters, cracks, packaging, whether the surface layer is complete, concave and the like. The use of the visual detection system can effectively improve the detection speed and accuracy of the production line, greatly improve the yield and quality, reduce the labor cost, and prevent misjudgment caused by eye fatigue.

[0066] In the embodiment, the size measuring device further comprises a workbench 16, a first driving assembly 8, a second driving assembly 9, a third driving assembly 10 and a fourth driving assembly 11 arranged on the workbench 16. Each driving assembly is used to drive the line laser profile measuring instrument and the visual detection assembly to move along the workpiece, so as to complete the full-range three-dimensional and planar feature detection of the workpiece without dead angle.

[0067] As shown in Figure 4 The first driving assembly 8 is connected to the first line laser profile measuring instrument 2 and the first visual detection assembly 4, and the first driving assembly 8 is used to drive the first line laser profile measuring instrument 2 to repeatedly move along the Y axis in the detection area 1.

[0068] The first driving assembly 8 comprises a rack 801 and a first Y-axis driving source 802, the rack 801 is arranged on the top of the detection area 1, the first Y-axis driving source 802 is installed on the top of the detection area 1, the rack 801 is installed on the output end of the first Y-axis driving source 802, and the first line laser profiler 2 and the first visual detection assembly 4 are both installed on the rack 801.

[0069] The laser and the visual detection assembly are synchronized in the Y-axis position, and the fixed relative position is always kept, so that the coordinate uniformity of the three-dimensional feature detection and the plane feature detection in the Y-axis direction is guaranteed, the difficulty of data splicing and calibration is greatly reduced, the measurement precision is improved, and the overall detection efficiency and reliability are improved.

[0070] As shown in Figure 3 The second driving assembly 9 is installed between the rack 801 and the first line laser profiler 2 and between the rack 801 and the first visual detection assembly 4, respectively, to drive the first line laser profiler 2 and the first visual detection assembly 4 to move in the X and Z axes, respectively.

[0071] The second driving assembly 9 comprises a first X-axis driving source 901, a second X-axis driving source 902, a first Z-axis driving source 903 and a second Z-axis driving source 904, the first X-axis driving source 901 and the second X-axis driving source 902 are installed on the two sides of the rack 801, respectively, the first Z-axis driving source 903 and the second Z-axis driving source 904 are installed on the output ends of the first X-axis driving source 901 and the second X-axis driving source 902, respectively, the first line laser profiler 2 is installed on the output end of the first Z-axis driving source 903, the first line laser profiler 2 is installed on the output end of the first Z-axis driving source 903, and the first visual detection assembly 4 is installed on the output end of the second Z-axis driving source 904.

[0072] The first line laser profiler 2 and the first visual detection assembly 4 have completely independent adjustment spaces in the X and Z axes, so that the detection postures of the first line laser profiler 2 and the first visual detection assembly 4 can be accurately adjusted according to the actual positions of the three-dimensional features and the plane features of the workpiece, mutual interference caused by linkage adjustment is effectively eliminated, and detection dead angles are avoided; meanwhile, independent driving greatly improves the adaptability of the equipment to workpieces of different sizes and complex shapes, and a variety of detection tasks can be completed without replacing the detection assemblies; in addition, the division of labor of the driving sources is clear, the load of a single driving source is reduced, the service life of the equipment is prolonged, and the stability and precision of detection are further improved.

[0073] As shown in Figure 6 The third driving assembly 10 is installed between the output end of the first Z-axis driving source 903 and the second line laser profiler 3 and between the output end of the second Z-axis driving source 904 and the second visual detection assembly 5, respectively.

[0074] The third driving assembly 10 includes a third X-axis driving source 101 and a fourth X-axis driving source 102, the third X-axis driving source 101 is installed on the output end of the first Z-axis driving source 903, the second line laser profilometer 3 is installed on the output end of the third X-axis driving source 101, the fourth X-axis driving source 102 is installed on the output end of the second Z-axis driving source 904, and the second visual detection assembly 5 is installed on the output end of the fourth X-axis driving source 102.

[0075] The second line laser profilometer 3 and the second visual detection assembly 5 can be flexibly adjusted according to the actual X-axis position of the feature on the other side of the workpiece, without being limited by the positions of the first line laser profilometer 2 and the first visual detection assembly 4, adapting to the detection requirements of the features on both sides of the asymmetric and special-shaped workpiece, avoiding the tedious process of repeatedly adjusting the workpiece; at the same time, independent adjustment ensures that the second line laser profilometer 3 and the second visual detection assembly 5 are always in the best detection position, improving the accuracy of the feature detection on both sides of the workpiece, and making the data on both sides more easily matched; in addition, the driving source drives a single assembly in a targeted manner, the load is smaller, the operation is more stable, the service life of the equipment is further prolonged, and the application scenarios of the equipment are widened.

[0076] As shown in Figure 5 The fourth driving assembly 11 is arranged at the bottom of the detection area 1, the fourth driving assembly 11 is connected with the mounting seat 6, and the fourth driving assembly 11 is used for driving the mounting seat 6 to repeatedly move along the Y and Z axes.

[0077] The fourth driving assembly 11 includes a second Y-axis driving source 111 and a third Z-axis driving source 112, the third Z-axis driving source 112 is installed on the output end of the second Y-axis driving source 111, and the mounting seat 6 is rotatably installed on the output end of the third Z-axis driving source 112.

[0078] The Y and Z double-axis linkage movement of the mounting seat 6 is realized through the fourth driving assembly 11, so that the workpiece can actively adapt to the detection positions of the laser and visual detection assemblies, the adjustment frequency of the detection assemblies is greatly reduced, the error caused by the frequent adjustment of the detection assemblies is effectively reduced, and the measurement accuracy is improved; at the same time, the active movement of the workpiece expands the detection coverage range, effectively eliminates the detection blind area of complex and large workpieces, and effectively improves the adaptation ability of the equipment to diversified workpieces; in addition, the double-axis driving structure runs stably and can drive the workpiece to accurately stop, further ensuring the reliability and efficiency of detection.

[0079] The X, Y and Z axis driving sources can be the structure of a motor and a screw rod, the displacement of each component is accurate and stable when moving along the axis, and there is no obvious shaking or deviation, so as to ensure the positioning accuracy of the laser detection and visual detection assemblies.

[0080] In this embodiment, a slide rail 14 can be added beside each shaft driving source (motor + screw rod), and the slide block is in sliding fit with the slide rail 14, and the bearing part is rigidly connected with the slide block, so that the part is limited in a fixed track when moving along the shaft, and the swing or deviation caused by unilateral force of the screw rod is avoided, thereby ensuring the straightness and stability of movement.

[0081] The auxiliary chain is connected between each driving source and the workbench 16, one end of the auxiliary chain is connected with the output end of the driving source, and the other end is connected with the workbench 16. By arranging the auxiliary chain, an effective movement guide mechanism can be formed, and the output end of each driving source can stably move in the preset direction.

[0082] Preferably, at least two mounting seats 6 are arranged to form a double station and realize alternate operation.

[0083] As shown in Figure 7 A size measurement method suitable for a size measurement device, the steps are as follows:

[0084] S1: fixing the workpiece on the mounting seat 6, the fourth driving assembly 11 drives the mounting seat 6 to move along the Y and Z axes, and the rotary driving source 12 adjusts the angle of the workpiece;

[0085] S2: the first line laser profilometer 2 moves in the X, Y and Z axis directions to the position of the mounting seat 6 to measure the three-dimensional size features of one side of the workpiece;

[0086] S3: the second line laser profilometer 3 moves in the Y and Z axes with the first line laser profilometer 2, and moves in the X axis away from or close to the first line laser profilometer 2 and detects the three-dimensional features of the other side of the workpiece;

[0087] S4: the first vision detection assembly 4 moves in the Y axis with the first line laser profilometer 2, and the first vision detection assembly 4 can independently move in the X and Z axes along the detection area 1, and the first vision detection assembly 4 detects the planar features of one side of the workpiece;

[0088] S5: the second vision detection assembly 5 moves in the Y and Z axes with the first vision detection assembly 4, and moves in the X axis away from or close to the first vision detection assembly 4 and detects the planar features of the other side of the workpiece.

[0089] The size measurement method provided by the application drives the movement of the mounting seat 6 to adjust the angle through the fourth driving assembly 11 and the rotating driving source 12, cooperates with the two-line laser profile measurement instrument to move along the X, Y and Z axes, and one line laser profile measurement instrument between the two-line laser profile measurement instruments can independently approach or move away from the other line laser profile measurement instrument along the X axis to complete the structure of the three-dimensional detection around the workpiece; the two visual detection assemblies are linked and synchronized with the Y axis position of the line laser profile measurement instrument, and independently move along the Z axis, and one visual detection assembly of the two visual detection assemblies can independently approach or move away from the other visual detection assembly along the X axis to complete the structure of the plane detection around the workpiece, so that the device can synchronously adapt to the multi-angle posture adjustment of the workpiece and the bilateral three-dimensional and plane feature measurement, without repeatedly disassembling the workpiece or switching the measurement module, thereby greatly reducing the measurement process and positioning error, realizing efficient cooperative detection of the bilateral size of the workpiece, improving the measurement efficiency and precision, and adapting to the synchronous measurement demand of multiple dimensions of complex workpieces.

[0090] The size measurement method further comprises the following steps:

[0091] As shown in Figure 8 S1-1: fixing the workpiece on the mounting seat 6, positioning the reference visual detection assembly 7 to synchronously capture the mounting seat 6 as a reference mark, and establishing a global coordinate system. This avoids the coordinate deviation caused by the slight difference in the placement position of the workpiece. The positioning reference visual detection assembly 7 synchronously captures the workpiece on the mounting seat 6, directly associates the global coordinate with the workpiece detection coordinate, and the subsequent laser and visual detection assembly detection are all based on a unified reference, without the need for repeated calibration of the workpiece position, reducing the coordinate conversion error, laying a precise coordinate foundation for the whole process size detection, and improving the consistency of the overall detection data.

[0092] As shown in Figure 9 S2-1: the first driving assembly 8 drives the gantry 801 to move along the Y axis, the first line laser profile measurement instrument 2 moves synchronously with the gantry 801, and the second driving assembly 9 drives the first line laser profile measurement instrument 2 to adjust the position along the X and Z axes to scan the three-dimensional features of one side of the workpiece at an inclined angle. The first driving assembly 8 and the second driving assembly 9 cooperatively adjust to cover the complex three-dimensional structures such as the concave and convex structures on the side of the workpiece, avoid the missed detection of the side features by the traditional vertical scanning, and the precise control of the double driving assemblies ensures the stability of the inclined angle, improves the accuracy of the three-dimensional feature size data, and meets the three-dimensional detection demand of complex workpieces.

[0093] As shown in Figure 10As shown, S3 also includes S3-1: the first drive component 8 simultaneously drives the second drive component 9, the third drive component 10, and the second line laser profile measuring instrument 3 to move along the Y-axis. The second line laser profile measuring instrument 3 moves together with the first line laser profile measuring instrument 2 along the Z-axis, and the third drive component 10 drives the second line laser profile measuring instrument 3 to move closer to / away from the first line laser profile measuring instrument 2 along the X-axis to scan the three-dimensional features on the other side of the workpiece. The multi-component linkage drives the movement of the second line laser profile measuring instrument 3, and the third drive component 10 can adjust its X-axis distance from the first line laser profile measuring instrument 2 to achieve scanning of the three-dimensional features on the other side of the workpiece. This design allows dual lasers to simultaneously detect the three-dimensional features on both sides of the workpiece without flipping the workpiece, significantly shortening the detection time. Simultaneously, the adjustable X-axis distance adapts to workpieces of different widths, enhancing the equipment's versatility.

[0094] like Figure 11 As shown, S4 also includes S4-1: the first vision detection component 4 moves along the Y-axis with the frame 801, and the second drive component 9 independently adjusts the X and Z-axis positions of the first vision detection component 4 to capture the planar features on one side of the workpiece in parallel. The first vision detection component 4 moves with the frame 801, and the second drive component 9 independently adjusts its X and Z-axis positions to enable it to capture the planar features on one side of the workpiece in parallel. Parallel shooting ensures that the vision detection component maintains a stable distance from the workpiece plane, avoiding distortion of planar dimensions caused by shooting angle deviations. The independent adjustment function can accurately align with different areas of the plane, capture subtle dimensional details, improve the accuracy of planar feature detection, and provide clear and accurate image data for subsequent planar dimension analysis.

[0095] like Figure 12 As shown, S5 also includes S5-1: the second vision detection component 5 is linked with the first vision detection component 4 along the Y and Z axes, and the fourth X-axis drive source 102 drives the second vision detection component 5 to adjust along the X-axis to capture and measure the planar features on the other side of the workpiece. The second vision detection component 5 is linked with the first vision detection component 4 and the fourth X-axis drive source 102 is adjusted independently to realize the capture and measurement of the planar features on the other side of the workpiece, and simultaneously acquire planar data on both sides of the workpiece, which facilitates rapid comparison of the dimensional differences between the two sides and reduces the limitations of single-sided detection.

[0096] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A size measuring device, characterized in that, include: Detection area; A first-line laser profile measuring instrument is set at the top of the detection area and moves repeatedly along the X, Y and Z axes of the detection area. The beam of the first-line laser profile measuring instrument is irradiated at an inclined angle to the plane of the detection area. The second line laser profile measuring instrument is located to the side of the first line laser profile measuring instrument. It moves repeatedly along the detection area along the Y and Z axes together with the first line laser profile measuring instrument, and moves along the X axis along the direction of the first line laser profile measuring instrument. The irradiation direction of the second line laser profile measuring instrument is opposite to or opposite to the irradiation direction of the first line laser profile measuring instrument. The first visual detection component is disposed to the side of the first line laser profile measuring instrument. It moves repeatedly along the Y-axis along the detection area together with the first line laser profile measuring instrument. The first visual detection component can move along the X and Z axes along the detection area. The first visual detection component takes pictures in a direction parallel to the detection area. The second visual detection component is disposed to the side of the first visual detection component. It moves repeatedly along the Y and Z axes together with the first visual detection component and moves along the X axis in the direction of the first visual detection component. The shooting direction of the second visual detection component is opposite to the shooting direction of the first visual detection component. The mounting base is located within the detection area and at the bottom of the first line laser profile measuring instrument, and can rotate repeatedly along the Y and Z axes of the detection area. A positioning reference vision inspection component is positioned to the side of the first line laser profile measuring instrument, so that stable reference coordinates can be obtained simultaneously during laser inspection.

2. The size measuring device according to claim 1, characterized in that, It also includes a first driving component, which is connected to the first line laser profile measuring instrument and the first vision detection component. The first driving component is used to drive the first line laser profile measuring instrument to move repeatedly along the Y-axis along the detection area. The first drive assembly includes a frame and a first Y-axis drive source. The frame is mounted on top of the detection area, the first Y-axis drive source is mounted on top of the detection area, the frame is mounted on the output end of the first Y-axis drive source, and the first line laser profile measuring instrument and the first vision detection assembly are both mounted on the frame. It also includes a second drive component, which is installed between the frame and the first line laser profile measuring instrument, and between the frame and the first vision inspection component, respectively, to drive the first line laser profile measuring instrument and the first vision inspection component to move along the X and Z axes, respectively. The second drive assembly includes a first X-axis drive source, a second X-axis drive source, a first Z-axis drive source, and a second Z-axis drive source. The first X-axis drive source and the second X-axis drive source are respectively mounted on both sides of the frame. The first Z-axis drive source and the second Z-axis drive source are respectively mounted on the output ends of the first X-axis drive source and the second X-axis drive source. The first line laser profile measuring instrument is mounted on the output end of the first Z-axis drive source. The first vision inspection assembly is mounted on the output end of the second Z-axis drive source. It also includes a third drive component, which is installed between the output end of the first Z-axis drive source and the second line laser profile measuring instrument, and between the output end of the second Z-axis drive source and the second vision detection component; The third driving component includes a third X-axis driving source and a fourth X-axis driving source. The third X-axis driving source is installed at the output end of the first Z-axis driving source. The second line laser profile measuring instrument is installed at the output end of the third X-axis driving source. The fourth X-axis driving source is installed at the output end of the second Z-axis driving source. The second vision detection component is installed at the output end of the fourth X-axis driving source. It also includes a fourth drive component, which is disposed at the bottom of the detection area. The fourth drive component is connected to the mounting base and is used to drive the mounting base to move repeatedly along the Y and Z axes. The fourth drive component includes a second Y-axis drive source and a third Z-axis drive source. The third Z-axis drive source is mounted on the output end of the second Y-axis drive source, and the mounting base is rotatably mounted on the output end of the third Z-axis drive source.

3. The size measuring device according to claim 2, characterized in that, It also includes a workbench for mounting the first drive component, the second drive component, the third drive component, and the fourth drive component.

4. The size measuring device according to claim 3, characterized in that, The worktable is equipped with a slide rail, which is used to guide each of the drive sources so that each of the line laser profile measuring instruments and the vision inspection components can move along a preset path.

5. A size measuring device according to claim 2, 3, or 4, characterized in that, Each of the drive sources is connected to the worktable via an auxiliary chain, one end of which is connected to the output end of the drive source, and the other end is connected to the worktable.

6. A size measuring device according to any one of claims 1-4, characterized in that, At least two mounting bases are provided to form a dual-station configuration, enabling alternating operations.

7. A method for measuring dimensions, characterized in that, The steps for using a size measuring device according to any one of claims 1-5 are as follows: S1: Fix the workpiece to the mounting base, and the fourth drive component drives the mounting base to move along the Y and Z axes, while the rotation drive source adjusts the workpiece angle. S2: The first line laser profile measuring instrument moves to the position of the mounting base in the X, Y and Z axis directions to measure the three-dimensional dimensional features of one side of the workpiece; S3: The second line laser profile measuring instrument moves along the Y and Z axes with the first line laser profile measuring instrument, and moves away from or closer to the first line laser profile measuring instrument along the X axis to detect the three-dimensional features on the other side of the workpiece. S4: The first vision detection component moves along the Y-axis with the first line laser profile measuring instrument, and the first vision detection component can move independently along the X and Z axes along the detection area. The first vision detection component detects the planar features on one side of the workpiece. S5: The second vision detection component moves along the Y and Z axes with the first vision detection component, and moves away from or closer to the first vision detection component along the X axis to detect the planar features on the other side of the workpiece.

8. The method for measuring dimensions according to claim 7, characterized in that, S1 further includes S1-1: fixing the workpiece to the mounting base, and the positioning reference vision detection component synchronously capturing the mounting base as a reference mark to establish a global coordinate system.

9. A method for measuring dimensions according to claim 7 or 8, characterized in that, S2 further includes S2-1: the first drive component drives the frame to move along the Y-axis, the first line laser profile measuring instrument moves synchronously with the frame, and at the same time the second drive component drives the first line laser profile measuring instrument to adjust its position along the X and Z axes to scan the three-dimensional features on one side of the workpiece at an inclined angle. S3 further includes S3-1: the first driving component simultaneously drives the second driving component, the third driving component, and the second line laser profile measuring instrument to move along the Y-axis, the second line laser profile measuring instrument moves together with the first line laser profile measuring instrument along the Z-axis, and the third driving component drives the second line laser profile measuring instrument to move closer to / away from the first line laser profile measuring instrument along the X-axis to scan the three-dimensional features on the other side of the workpiece.

10. A method for measuring dimensions according to claim 7 or 8, characterized in that, S4 further includes S4-1: the first vision detection component moves along the Y-axis with the frame, and the second drive component independently adjusts the X and Z axis positions of the first vision detection component to photograph the planar features on one side of the workpiece in parallel. S5 further includes S5-1: the second vision detection component completes Y and Z axis linkage with the first vision detection component, and the fourth X-axis drive source drives the second vision detection component to adjust along the X-axis to capture and measure the planar features on the other side of the workpiece.

Images