A rotary table type worktable for detecting the fit degree of a connecting rod bushing by machine vision

Abstract

The application discloses a rotary table type workbench for detecting the adhesion of a connecting rod bushing through machine vision, which comprises a base, a rotary table fixedly installed at the top end of the base, a cross rod fixedly installed at one side of the rotary table, and an LED light source fixedly installed at one side of the top end of the cross rod. Through the rotation of the workbench, the connecting rod embedded in the connecting rod assembly groove is rotated. When the connecting rod is rotated to the detection position, the image of the connecting rod is collected through the machine vision detection equipment and processed through a vision processor, so that whether the adhesion of the connecting rod bushing meets the production precision requirement can be quickly detected. When the detection is qualified, the workbench is rotated to the normal working position and conveyed out through the corresponding connecting rod conveying belt. When the detection is unqualified, the workbench is rotated to the abnormal working position and conveyed out through the corresponding connecting rod conveying belt. After the machine vision detection, the adhesion of the connecting rod bushing is within the production requirement range, and the detection efficiency of the connecting rod bushing is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a rotary table, in particular to a rotary table for machine vision detection of the fit degree of a connecting rod bushing, and belongs to the technical field of connecting rod bushing fit degree detection. BACKGROUND

[0002] As an important part of an automobile engine, a connecting rod bears a high periodic load in work, and the stress is very complex, so the assembly requirements for the connecting rod are very high. After a series of cleaning processes, the cleanliness of the workpiece surface and the gap is improved, but in parts such as the connecting rod bushing that require higher standard cleanliness, it may not meet the requirements. If the residual exceeds the standard metal debris and antirust oil dirt, it is not only easy to scratch the highly precise inner surface of the bushing, but also is not conducive to heat transfer during the work of the connecting rod, which seriously affects the working performance of the connecting rod and the engine and the crankshaft after assembly. Therefore, a series of detections must be performed on the connecting rod before leaving the factory to ensure that the cleanliness of the connecting rod bushing meets the standard and the fit degree is within the normal range.

[0003] Disadvantages and deficiencies of the prior art: there are few devices for detecting the fit degree of the connecting rod bushing on the market, and the method is relatively single. With the further increase in the quality requirements for the connecting rod under the national standard VI, higher requirements are put forward for the detection precision of the fit degree of the connecting rod bushing. Currently, the detection of the fit degree of the connecting rod bushing on the market is prone to internal adulteration of substandard products, which affects use. SUMMARY

[0004] The present application aims to provide a rotary table for machine vision detection of the fit degree of a connecting rod bushing to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a base is provided, a rotating table is fixedly installed at the top end of the base, a cross rod is fixedly installed on one side of the rotating table, an LED light source is fixedly installed on one side of the top end of the cross rod, a rotating rod is rotatably connected to the center of the top end of the rotating table, a workbench is fixedly installed at the top end of the rotating rod, a plurality of connecting rod conveying belts are equidistantly arranged on the side of the workbench, the connecting rod conveying belts are fixedly connected with the base, an electromagnet is fixedly installed at the center of the workbench, a plurality of connecting rod assembly grooves are formed in the edge of the top end of the workbench, a clamping hook is fixedly arranged on the side wall of the connecting rod assembly groove, a fixed rod is fixedly installed on the edge of the top end of the base, a horizontal plate is fixedly installed at the top end of the fixed rod, a machine vision detection device is fixedly installed at the end of the horizontal plate, and the machine vision detection device is aligned with one of the connecting rod assembly grooves.

[0006] As a preferred technical scheme of the present application, the top end of the workbench is provided with an abnormal operation position, a normal operation position and a detection position, and the abnormal operation position, the normal operation position and the detection position are respectively aligned with the corresponding connecting rod conveying belt positions.

[0007] As a preferred technical scheme of the present application, the detection position is aligned with a machine vision detection device, and the distance between the machine vision detection device and the detection position is 10 cm.

[0008] As a preferred technical scheme of the present application, the surface cover of the LED light source is provided with a protective cover, and the LED light source is a coaxial LED light source.

[0009] As a preferred technical scheme of the present application, the size of the connecting rod assembly groove matches the size of the connecting rod.

[0010] As a preferred technical scheme of the present application, a reduction motor is fixedly installed inside the rotating table, and the output shaft of the reduction motor is fixedly connected with the bottom end of the rotating rod.

[0011] As a preferred technical scheme of the present application, a control box is fixedly installed on one side of the fixed rod, a visual processor is installed inside the control box, and the visual processor is electrically connected with the machine vision detection device.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] The present application is a rotating table type workbench for detecting the fit degree of a connecting rod bushing through machine vision, which rotates the connecting rod embedded in the connecting rod assembly groove, collects the image of the connecting rod through a machine vision detection device when the connecting rod rotates to the detection position, processes the image through a visual processor, and detects whether the fit degree of the connecting rod bushing meets the production accuracy requirement quickly. When the detection is qualified, the workbench rotates to the normal operation position and is conveyed out through the corresponding connecting rod conveying belt. When the detection is unqualified, the workbench rotates to the abnormal operation position and is conveyed out through the corresponding connecting rod conveying belt. The fit degree of the connecting rod bushing after machine vision detection is within the production requirement range, and the detection efficiency of the connecting rod bushing is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a front structure schematic view of the present application;

[0015] Fig. 2 It is a top view structure schematic view of the present application.

[0016] As shown in the figure: 1, base; 2, rotating table; 3, rotating rod; 4, crossbar; 5, LED light source; 6, protective cover; 7, workbench; 8, fixed rod; 9, cross plate; 10, machine vision detection equipment; 11, non-normal operation; 12, normal operation; 13, detection; 14, connecting rod conveyor belt; 15, hook; 16, connecting rod assembly groove; 17, electromagnet; 18, control box. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0018] Please refer to Figs. 1-2 The present application provides a kind of technical solutions of machine vision detection connecting rod bushing fit degree's rotating table:

[0019] According to Figs. 1-2 As shown, including base 1, the top end of base 1 is fixedly installed with rotating table 2, one side of rotating table 2 is fixedly installed with crossbar 4, the top end of crossbar 4 is fixedly installed with LED light source 5, the top center of rotating table 2 is rotatably connected with rotating rod 2, the top end of rotating rod 2 is fixedly installed with workbench 7, the side of workbench 7 is equidistantly provided with multiple connecting rod conveyor belts 14, connecting rod conveyor belt 14 is fixedly connected with base 1, the center of workbench 7 is fixedly installed with electromagnet 17, the side of the top end of workbench 7 is provided with multiple connecting rod assembly grooves 16, the side wall of connecting rod assembly groove 16 is fixedly provided with hook 15, the top end of base 1 is fixedly installed with fixed rod 8, the top end of fixed rod 8 is fixedly installed with cross plate 9, the end of cross plate 9 is fixedly installed with machine vision detection equipment 10, machine vision detection equipment 10 is aligned with one of connecting rod assembly groove 16, by rotating workbench 7, connecting rod embedded in connecting rod assembly groove 16 is rotated, when connecting rod is rotated to the position of detection 13, the image of connecting rod is collected by machine vision detection equipment 10, and is processed by vision processor, to facilitate the detection of connecting rod bushing fit degree whether it meets the production accuracy requirement.

[0020] According to Fig. 1 And Fig. 2As shown, the top end of the workbench 7 is provided with an abnormal operation place 11, a normal operation place 12 and a detection place 13, the abnormal operation place 11, the normal operation place 12 and the detection place 13 are respectively aligned with the corresponding connecting rod conveying belt 14, the connecting rod bushings with qualified requirements and unqualified requirements are classified, the detection place 13 is aligned with the machine vision detection equipment 10, the distance between the machine vision detection equipment 10 and the detection place 13 is 10 cm, the connecting rod bushings are collected by the machine vision detection equipment, the surface cover of the LED light source 5 is provided with a protective cover 6, the LED light source 5 is a coaxial LED light source, the size of the connecting rod assembly groove 16 matches the size of the connecting rod, the connecting rod bushing is embedded into the connecting rod assembly groove 16, a speed reducer motor is fixedly installed in the inside of the rotating table 2, the output shaft of the speed reducer motor is fixedly connected with the bottom end of the rotating rod 3, a control box 18 is fixedly installed on one side of the fixed rod 8, a visual processor is installed in the control box 18, and the visual processor is electrically connected with the machine vision detection equipment.

[0021] In specific use, the rotary table type workbench for machine vision detection of connecting rod bushing adhesion degree is used, first, the connecting rod bushings to be detected are conveyed to the workbench 7 through the connecting rod conveying belt 14 and are automatically input into the connecting rod assembly groove 16, when the connecting rod bushings are input into the connecting rod assembly groove 16, the connecting rod bushings are collected by the machine vision detection equipment, the collected image information is transmitted to the visual processor for processing, the visual processor processes the image by using a weighted median filter operator and an illuminate operator, when the Factor coefficient is 0.8 (because the foreground and background are obviously distinguished after processing, the feature information is convenient to extract), finally, the operator for calculating the connecting rod bushing adhesion degree is obtained by referring to the spoke operator (the fitting circle of the curvature radius can be found out, and the size of the curvature radius can be measured), whether the connecting rod bushing adhesion degree is within the production range is determined, when the connecting rod bushing adhesion degree is within the production range, the workbench 7 is rotated to the normal operation place 12 by the visual processor, the detected bushings flow into the corresponding connecting rod conveying belt 14 and flow out, when the connecting rod bushing adhesion degree is not within the production range, the workbench 7 is rotated to the abnormal operation place 11 by the visual processor, and the detected bushings flow into the corresponding connecting rod conveying belt 14 and flow out.

[0022] In the description of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and cannot be understood as a limitation on the present application.

[0023] In the present application, unless otherwise explicitly specified and limited, for example, can be fixedly connected, or can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances by those skilled in the art.

[0024] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rotary table for machine vision inspection of the fit of a connecting rod bushing, comprising a base (1), characterized in that, The top end of the base (1) is fixedly installed with a rotating table (2), one side of the rotating table (2) is fixedly installed with a cross rod (4), the top end of the cross rod (4) is fixedly installed with an LED light source (5), the top end of the rotating table (2) is rotatably connected with a rotating rod (3), the top end of the rotating rod (3) is fixedly installed with a workbench (7), a plurality of connecting rod conveying belts (14) are equidistantly arranged on the side surface of the workbench (7), the connecting rod conveying belt (14) is fixedly connected with the base (1), the center of the workbench (7) is fixedly installed with an electromagnet (17), a plurality of connecting rod assembly grooves (16) are formed in the edge of the top end of the workbench (7), the side wall of the connecting rod assembly groove (16) is fixedly provided with a hook (15), the edge of the top end of the base (1) is fixedly installed with a fixed rod (8), the top end of the fixed rod (8) is fixedly installed with a cross plate (9), the end of the cross plate (9) is fixedly installed with a machine vision detection device (10), the machine vision detection device (10) is aligned with one of the connecting rod assembly grooves (16). The top end of the workbench (7) is provided with an abnormal operation place (11), a normal operation place (12) and a detection place (13), the abnormal operation place (11), the normal operation place (12) and the detection place (13) are respectively aligned with the corresponding connecting rod conveying belt (14). The detection place (13) is aligned with the machine vision detection device (10), and the distance between the machine vision detection device (10) and the detection place (13) is 10cm. The surface of the LED light source (5) is provided with a protective cover (6), and the LED light source (5) is a coaxial LED light source.

2. The rotary table work head for machine vision inspection of connecting rod bushing conformance of claim 1, wherein: The size of the connecting rod assembly groove (16) matches the size of the connecting rod.

3. The rotary table work head for machine vision inspection of connecting rod bushing conformance of claim 1, wherein: The inside of the rotating table (2) is fixedly installed with a speed reducer motor, and the output shaft of the speed reducer motor is fixedly connected with the bottom end of the rotating rod (3).

4. The rotary table work head of claim 1, wherein: One side of the fixed rod (8) is fixedly installed with a control box (18), the inside of the control box (18) is installed with a vision processor, and the vision processor is electrically connected with the machine vision detection device.

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