Needle roller detection device and detection method thereof

Abstract

The present invention relates to a needle roller detection device, including a cavity cabinet, the needle roller detection device also includes a needle roller placement plate, a first detection plate, a second detection plate, an image detection device and a controller, the controller is arranged on the surface of the cabinet, the two ends of the needle roller placement plate are detachably arranged on the inner cavity side of the cabinet side plate, and the surface of the needle roller placement plate is evenly provided with a plurality of placement grooves; the first detection device includes a connecting plate arranged vertically downward on both sides thereof and a No. 1 camera and a No. 1 lighting device arranged inside thereof; the second detection plate includes a light shielding plate arranged vertically upward on both sides thereof, a No. 2 camera and a No. 2 lighting device are arranged in the second detection plate, and are respectively connected to the controller circuit. The present invention can detect a plurality of needle rollers at the same time by arranging a plurality of detection units on the needle roller placement plate, the first detection plate and the second detection plate, thereby improving the detection efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of needle roller manufacturing, and in particular relates to a needle roller detection device and a detection method thereof. Background Art

[0002] Needle roller bearings are roller bearings with cylindrical rollers. Relative to their diameter, the rollers are thin and long. This type of roller is called a needle roller. During the rotation of the bearing, the needle rollers continuously rub against the bearing rings, rolling elements and retainers. In order to reduce the friction and wear inside the bearing, extend the service life of the needle rollers and ensure the accuracy of the bearings, the roughness test of the needle roller surface is an essential step before the needle rollers leave the factory.

[0003] At present, the needle roller inspection of needle roller bearings on the market mainly detects whether there are scratches and rust on the surface of the needle roller, which is usually manual inspection. Manual inspection is not only slow, but also prone to fatigue after long-term inspection, resulting in reduced inspection accuracy. The labor intensity of workers is high, the inspection effect is not ideal, and the inspection cost is greatly increased.

[0004] The invention patent with application number "CN201210427443.X" and invention name "Needle roller surface defect detection method and device based on machine vision" adopts a method based on machine vision to detect defects on the surface of the needle roller. The automatic feeding part transports the needle roller to the needle roller friction roller, causing the needle roller to rotate and move forward around its own axis. The camera takes a picture of the rotating needle roller and transmits the image to the computer for processing, which solves the problems of low efficiency and poor accuracy of manual detection. However, when the needle roller is driven to roll by the needle roller friction roller, it will be polished by the needle roller friction roller, affecting the roughness of its surface. More importantly, it can only detect one needle roller at a time, and the detection efficiency is low. Summary of the invention

[0005] The purpose of the present invention is to provide a needle roller detection device and a detection method thereof with a simple structure and reasonable design in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A needle roller detection device, comprising a cavity cabinet, wherein both sides of the cabinet are horizontally provided with double rows of sliding grooves, which are respectively a first slide rail and a second slide rail from top to bottom, and the needle roller detection device also comprises a needle roller placement plate, a first detection plate, a second detection plate, an image detection device and a controller, wherein the controller is arranged on the surface of the cabinet, and both ends of the needle roller placement plate are detachably arranged on the side of the inner cavity of the cabinet side plate and are located between the first slide rail and the second slide rail, and a plurality of placement grooves are evenly arranged on the surface of the needle roller placement plate, and the size of the placement groove matches the needle roller to be detected;

[0008] The first detection plate is horizontally placed inside the cabinet, above the needle roller placement plate, and the two ends of the first detection plate are respectively arranged inside the first slide rail on the side of the cabinet, and driven by the motor a. The first detection device includes a connecting plate arranged vertically downward on both sides thereof and a No. 1 camera and a No. 1 lighting device arranged inside thereof, and the inner surface of the connecting plate is relatively provided with fastening grooves;

[0009] The second detection board is horizontally placed inside the cabinet, and the two ends of the second detection board are respectively arranged inside the second slide rail and driven by the motor a. The second detection board includes light shielding plates arranged vertically upward on both sides thereof. A second camera and a second lighting device are arranged inside the second detection board, and are respectively connected to the controller circuit;

[0010] The image detection device is arranged at one end of the cabinet and is connected to the first detection board and the second detection board respectively.

[0011] By adopting the above technical solution, the surface of the needle roller can be photographed without the needle roller rotating, and the wear condition of the needle roller surface can be analyzed. Moreover, multiple groups of needle rollers can be tested at the same time, thereby improving the detection efficiency.

[0012] As a further optimization solution of the present invention, a pushing device is provided at the bottom of the placement groove, and the pushing device is connected to the controller circuit.

[0013] By adopting the above technical solution, the needle roller can be directly transferred from the placement groove to the first detection plate under the action of the controller, thereby reducing the degree of wear on the needle roller during the detection process.

[0014] As a further optimization scheme of the present invention, the end of the connecting plate is infinitely close to but does not contact the upper surface of the needle roller placement plate, a telescopic fastener is arranged inside the fastening groove, the telescopic fastener is connected to the controller circuit, and the distance between the connecting plates matches the length of the needle roller to be measured.

[0015] By adopting the above technical solution, the connection and contact between the first detection plate and the roller needle placement plate are facilitated, and the transfer and fixation of the roller needle are convenient.

[0016] As a further optimization solution of the present invention, the end of the light blocking plate is infinitely close to the end of the connecting plate of the first detection plate but does not touch it.

[0017] By adopting the above technical solution, it is convenient for the second detection plate to take pictures of the rolling needle, ensuring that the process is not affected by the outside world.

[0018] As a further optimization scheme of the present invention, the needle roller placement plate, the first detection plate and the second detection plate are all matched with corresponding needle rollers and are all designed to be detachable and replaceable. Different types of needle rollers correspond to different needle roller placement plates and detection equipment.

[0019] By adopting the above technical solution, the device can be applied to the detection of different roller needles, thus expanding the scope of professional use.

[0020] The output end of the controller is respectively connected to the first detection board, the second detection board and the image detection device of the motor a.

[0021] By adopting the above technical solutions, manual operations can be reduced, the degree of mechanization can be enhanced, and the efficiency of detection can be improved.

[0022] A detection method of the device as described above comprises the following steps:

[0023] S1: Selection and installation of needle rollers

[0024] According to the model with measuring needle roller, select the needle roller placement plate and detection plate corresponding to the needle roller, and install them. After the installation is completed, place the needle rollers in the placement grooves respectively;

[0025] S2: The first detection board takes a photo of the needle roller

[0026] The controller starts the first detection plate, which moves horizontally in the first slide rail to the top of the needle roller placement plate. The No. 1 lighting device starts lighting, and the No. 1 camera takes a picture of the needle roller in the placement slot and transmits the image data to the image detection device.

[0027] After the photo is taken, the pushing device pushes the needle roller upward to the fastening groove of the first detection plate connecting plate, and the telescopic fastener in the fastening groove further reinforces the needle roller. Under the action of the controller, the first detection plate is separated from the needle roller placement plate and returns to the initial position;

[0028] S3: The second detection board takes a second photo of the needle roller

[0029] The second detection plate moves to the bottom of the first detection plate under the action of the controller, the connecting plate and the light shielding plate are in contact with each other, the second lighting device is started, the second camera takes a second photo of the roller needle on the first detection plate, and transmits the image data to the image detection device. After the photo is taken, the second detection plate is separated from the first detection plate, and the second detection plate returns to its original position.

[0030] S4: Image data analysis, needle roller screening

[0031] The image detection equipment analyzes the results of the two photos, detects the wear of the two surfaces of the needle rollers, and thereby screens out needle rollers with high surface smoothness that meet the requirements; based on the image detection results, the controller starts the telescopic fasteners, loosens the telescopic fasteners corresponding to the needle rollers that do not meet the specifications, releases the needle rollers into the collection device at the bottom of the cabinet, and collects the qualified needle rollers on the first inspection plate.

[0032] The beneficial effects of the present invention are:

[0033] 1) The present invention can detect multiple needle rollers at the same time by arranging multiple detection units on the needle roller placement plate, the first detection plate and the second detection plate, thereby improving the detection efficiency;

[0034] 2) The present invention, through the detachable connection type roller needle placement plate and the detection plate, can complete the detection of different types of roller needles by replacing the above devices according to production needs, and can change the number of roller needles to be detected, thereby improving the detection efficiency, simple operation, and easy to implement;

[0035] 3) The present invention has a simple structure, high stability, reasonable design and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the rear structure of the present invention;

[0038] Figure 3 is a cross-sectional view of the present invention;

[0039] Figure 4 It is a structural schematic diagram of the first detection board of the present invention;

[0040] Figure 5 It is a circuit relationship diagram of the present invention.

[0041] In the figure: 1, cabinet; 11, needle placement plate; 12, first detection plate; 13, second detection plate; 14, image detection equipment; 15, controller; 111, placement slot; 112, pushing device; 121, first slide rail; 122, connecting plate; 123, lighting device No. 1; 124, camera No. 1; 125, fastening groove; 126, telescopic fastener; 131, camera No. 2; 132, lighting device No. 2; 133, light shielding plate; 134, second slide rail. DETAILED DESCRIPTION

[0042] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0043] Example 1

[0044] like Figure 1-5As shown, a needle roller detection device includes a device body, which is a cavity cabinet 1, including a needle roller placement plate 11, a first detection plate 12, a second detection plate 13, an image detection device 14 and a controller 15. The cabinet 1 has double rows of sliding grooves horizontally arranged on both sides. The sliding groove close to the upper end surface of the cabinet 1 is a first slide rail 121, and the sliding groove below is a second slide rail 134. The needle roller placement plate 11 is horizontally placed above the inside of the cabinet 1. The two ends of the needle roller placement plate 11 are detachably arranged on the side of the inner cavity of the side plate of the cabinet 1 and are located on the first slide rail. 121 and the second slide rail 134, a plurality of placement grooves 111 are evenly arranged on the surface of the needle roller placement plate 11, and the size of the placement grooves 111 matches the size and length of the needle roller to be tested. A pushing device 112 is arranged at the bottom of the placement groove 111, which can push the needle roller arranged inside the placement groove 111 upward under the action of the controller 15 arranged on the outer surface of the cabinet 1. The needle roller placement plate 11 can be designed with different placement grooves 111 according to the specifications of different needle rollers, and it is a detachable connection method, which can be replaced accordingly according to different needle rollers to be tested.

[0045] The first detection plate 12 is horizontally placed above the interior of the cabinet 1 and above the needle roller placement plate 11. The two ends of the first detection plate 12 are respectively arranged inside the first slide rail 121 on the side of the cabinet 1, and can slide horizontally under the drive of the motor a arranged outside the cabinet 1. The motor a is connected to the controller 15 circuit, and the first detection device can be started by the controller 15. The first detection device includes a connecting plate 122 arranged vertically downward on both sides thereof and a detection device arranged on the inner surface of the top plate. The end of the connecting plate 122 is infinitely close to but does not contact the upper surface of the needle roller placement plate 11. The inner surface of the connecting plate 122 is relatively provided with a fastening groove 125, and a telescopic fastener 126 is arranged inside the fastening groove 125. The telescopic fastener 126 is connected to the controller 15 circuit and can be retracted under the action of the controller 15. The distance between the connecting plates 122 matches the length of the needle roller to be tested. The detection device includes a No. 1 camera 124 and a No. 1 lighting device 123 arranged inside the first detection plate 12, and the detection device is connected to the controller 15 circuit.

[0046] The second detection plate 13 is horizontally placed at the upper end of the cabinet 1, and the two ends of the second detection plate 13 are respectively arranged inside the second slide rail 134, driven by the motor a, and can slide horizontally in the second slide rail 134 under the action of the controller 15. The second detection plate 13 includes light blocking plates 133 vertically arranged on both sides thereof, and the ends of the light blocking plates 133 are infinitely close to but not in contact with the ends of the connecting plates 122 of the first detection plate 12. A No. 2 camera 131 and a No. 2 lighting device 132 are arranged in the second detection plate 13, and the No. 2 detection device is connected to the controller 15 circuit, and the No. 2 camera 131 and the lighting device are started by the controller 15.

[0047] The image detection device 14 is disposed at one end of the cabinet 1 and is connected to the first detection board 12 and the second detection board 13 respectively, and can analyze the transmitted needle roller image data and select qualified needle rollers.

[0048] It should be noted that the needle roller placement plate 11, the first detection plate 12, and the second detection plate 13 are all matched with the corresponding needle rollers, and are all designed to be detachable and replaceable. Different types of needle rollers correspond to different needle roller placement plates 11 and detection equipment, which can be selected accordingly, and multiple groups of needle rollers can be detected and screened at the same time.

[0049] The specific working steps are:

[0050] S1: Selection and installation of needle rollers

[0051] According to the model of the measuring needle roller, select the needle roller placement plate 11 and the detection plate corresponding to the needle roller, and install them. After the installation is completed, place the needle rollers in the placement grooves 111 respectively;

[0052] S2: The first detection board 12 takes a photo of the needle roller

[0053] The controller 15 controls the first detection plate 12 to start, and moves horizontally in the first slide rail 121 to the top of the needle roller placement plate 11, the first lighting device 123 starts lighting, and the first camera 124 takes a picture of the needle roller in the placement slot 111, and transmits the image data to the image detection device 14;

[0054] After the photo is taken, the pushing device 112 on the bottom of the placement groove 111 pushes the needle roller upward and pushes it into the fastening groove 125 of the connecting plate 122 of the first detection plate 12. The telescopic fastener 126 in the fastening groove 125 further reinforces the needle roller. The first detection plate 12 is separated from the needle roller placement plate 11 under the action of the controller 15 and returns to the initial position.

[0055] S3: The second detection board 13 takes a second photo of the needle roller

[0056] The second detection plate 13 moves to the right below the first detection plate 12 under the action of the controller 15, the connecting plate 122 and the light shielding plate 133 are in contact with each other, the second lighting device 132 is started, the second camera 131 takes a second photo of the roller needle on the first detection plate 12, and transmits the image data to the image detection device 14. After the photo is taken, the second detection plate 13 is separated from the first detection plate 12, and the second detection plate 13 returns to its original position.

[0057] S4: Image data analysis, needle roller screening

[0058] The image detection device 14 analyzes the two photographing results, detects the wear of the two surfaces of the needle roller, and thereby selects the needle rollers with high surface smoothness that meet the requirements;

[0059] According to the image detection results, the controller 15 starts the telescopic fastener 126 of the first detection plate 12, loosens the telescopic fastener 126 corresponding to the non-compliant roller needles, releases the roller needles into the collection device at the bottom of the cabinet 1, and collects the qualified roller needles on the first detection plate 12.

[0060] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A needle roller detection method based on a needle roller detection device, characterized in that: The needle roller detection device comprises a cavity cabinet (1), both sides of the cabinet (1) are horizontally provided with double rows of sliding grooves, which are respectively a first slide rail (121) and a second slide rail (134) from top to bottom, the needle roller detection device also comprises a needle roller placement plate (11), a first detection plate (12), a second detection plate (13), an image detection device (14) and a controller (15), the controller (15) being arranged on the surface of the cabinet (1), the two ends of the needle roller placement plate (11) being detachably arranged on the inner cavity side of the side plate of the cabinet (1), and being located between the first slide rail (121) and the second slide rail (134), the surface of the needle roller placement plate (11) being evenly provided with a plurality of placement grooves (111), the size of which matches the needle roller to be detected; The first detection plate (12) is horizontally placed inside the cabinet (1) and is located above the needle roller placement plate (11). The two ends of the first detection plate (12) are respectively arranged inside the first slide rail (121) on the side of the cabinet (1) and driven by a motor. The first detection plate includes a connecting plate (122) arranged vertically downward on both sides thereof and a first camera (124) and a first lighting device (123) arranged inside the connecting plate (122). The inner surface of the connecting plate (122) is relatively provided with fastening grooves (125); The second detection board (13) is horizontally placed inside the cabinet (1), and the two ends of the second detection board (13) are respectively arranged inside the second slide rail (134) and driven by a motor. The second detection board (13) includes light shielding plates (133) arranged vertically upward on both sides thereof. A second camera (131) and a second lighting device (132) are arranged inside the second detection board (13), and are respectively connected to the controller (15) circuit. The image detection device (14) is arranged at one end of the cabinet (1) and is connected to the first detection board (12) and the second detection board (13) respectively; A pushing device (112) is provided at the bottom of the placement slot (111), and the pushing device (112) is connected to the controller (15) circuit; The end of the connecting plate (122) is infinitely close to but does not contact the upper surface of the needle roller placement plate (11); a telescopic fastener (126) is arranged inside the fastening groove (125); the telescopic fastener (126) is connected to the controller (15) circuit; and the distance between the connecting plates (122) matches the length of the needle roller to be measured; The end of the light blocking plate (133) is infinitely close to but not in contact with the end of the connecting plate (122) of the first detection plate (12); The needle roller placement plate (11), the first detection plate (12), and the second detection plate (13) are all matched with corresponding needle rollers and are designed to be detachable and replaceable. Different types of needle rollers correspond to different needle roller placement plates (11) and detection plates. The output end of the controller (15) is respectively connected to the motor, the first detection board (12), the second detection board (13) and the image detection device (14); The detection method comprises the following steps: S1: Selection and installation of needle rollers According to the model of the needle roller to be tested, a needle roller placement plate (11) and a detection plate corresponding to the needle roller are selected and installed. After the installation is completed, the needle rollers are placed in the placement grooves (111) respectively; S2: The first detection board (12) takes a photo of the needle roller The controller (15) controls the start of the first detection plate (12), the first detection plate moves horizontally in the first slide rail (121) to the position directly above the needle roller placement plate (11), the first lighting device (123) starts lighting, the first camera (124) takes a picture of the needle roller in the placement slot (111), and transmits the image data to the image detection device (14); After the photographing is completed, the pushing device (112) pushes the needle roller upwards to the fastening groove (125) of the connecting plate (122) of the first detection plate (12), and the telescopic fastener (126) in the fastening groove (125) further reinforces the needle roller. Under the action of the controller (15), the first detection plate (12) is separated from the needle roller placement plate (11) and returns to the initial position; S3: The second detection board (13) takes a second photo of the needle roller The second detection plate (13) moves to the position directly below the first detection plate (12) under the action of the controller (15), the connecting plate (122) and the light shielding plate (133) are in contact with each other, the second lighting device (132) is started, the second camera (131) takes a second photo of the roller needle on the first detection plate (12), and transmits the image data to the image detection device (14). After the photo is taken, the second detection plate (13) is separated from the first detection plate (12), and the second detection plate (13) returns to its original position. S4: Image data analysis, needle roller screening The image detection device (14) analyzes the results of the two photos, detects the wear conditions of the two surfaces of the needle rollers, and thereby selects needle rollers with high surface smoothness that meet the requirements; based on the image detection results, the controller (15) starts the telescopic fastener (126), loosens the telescopic fastener (126) corresponding to the needle rollers that do not meet the specifications, releases the needle rollers into the collection device at the bottom of the cabinet (1), and collects the qualified needle rollers on the first detection plate (12).

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