Brinell hardness automatic detection system and detection method thereof

Abstract

The invention discloses an automatic Brinell hardness detection system and a detection method thereof, and belongs to the technical field of Brinell hardness detection. Comprising an integration unit, a feeding unit, a transfer unit, a polishing unit and a Brinell hardness detection unit, and the integration unit controls the feeding unit, the transfer unit, the polishing unit and the Brinell hardness detection unit; the feeding unit comprises a conveying track and a turnover box, a conveying belt is arranged on the periphery of the conveying track, a visual sensor support is arranged on the conveying track, a clamping device is arranged on the portion, below the support, of the conveying track, an optical recognition system is arranged on the support, the turnover box can move along with the conveying belt, and the transferring unit can transfer parts in the turnover box to the grinding unit. According to the system, a special clamp does not need to be independently designed according to a to-be-detected part, the turnover box is conveyed through the conveying belt, the part is recognized and positioned through the optical recognition system, automatic detection of the part with a complex structure can be completed, and the system is suitable for automatic hardness detection of the parts with multiple specifications and complex shapes.

Description

Technical Field

[0001] The invention belongs to the technical field of Brinell hardness detection, and in particular relates to an automatic Brinell hardness detection system and a detection method thereof. Background Art

[0002] Brinell Hardness Test is a method of indentation hardness testing mainly for metal materials. A certain load is applied to the metal material by an indenter, and then the diameter of the indentation left by the indenter on the metal material is measured by a measuring device, and the Brinell hardness value of the metal material is calculated based on the indentation area and the test force.

[0003] The current Brinell hardness testing method is mainly applicable to metal materials with simple regular shapes. For example, the patent CN210146482U bar Brinell hardness automatic testing and sorting device mainly involves the Brinell hardness automatic testing and sorting of bar materials. The device is provided with a conveying roller at the feeding end, a grinding device for grinding one end of the bar material to be tested and a hardness testing device for measuring the hardness after grinding; a movable feeding manipulator is provided on the roller. The feeding manipulator moves above the roller under the control of the output signal of the control unit, grabs and conveys the bar material to the form-fitting fixture. The form-fitting fixture clamps or releases the bar material under the control of the output signal of the control unit, and can reciprocate between the grinding device and the hardness testing device under the action of the power device. The hardness data of the bar material obtained by the hardness testing device each time is input into the control unit, and a feeding manipulator is also provided to place the bar material in the material box. This device is for products with simple regular shapes, and all need to be realized by special fixtures, so it cannot be applied to the automatic testing of parts with complex structures.

[0004] Blade parts occupy an important position in mechanical manufacturing. The shapes of blade parts are often very complex, including various curved surfaces, twisted and bent structures, with large differences in size and various materials. These complexities not only increase the difficulty of processing, but also put higher requirements on their hardness testing. In addition, because blade parts usually work in a harsh environment, this puts extremely high requirements on the hardness and wear resistance of blade parts. However, there is currently no automated detection method for parts with complex structures similar to blade parts. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a Brinell hardness automated testing system and a testing method thereof, so as to solve the problem that the existing Brinell hardness testing method is not applicable to the testing of complex structural parts.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A first aspect of the present invention discloses an automated Brinell hardness testing system, comprising an integration unit, a feeding unit, a transfer unit, a grinding unit and a Brinell hardness testing unit; Integrated unit for controlling the loading unit, transfer unit, grinding unit and Brinell hardness testing unit; The loading unit is used to transfer the parts to be inspected to the grinding unit; the loading unit includes a transmission track and a turnover box, a transmission belt is arranged on the periphery of the transmission track, a visual sensor bracket is arranged on the transmission track, a clamping device is arranged on the transmission track below the visual sensor, an optical recognition system is arranged on the visual sensor bracket, and the turnover box can move with the transmission belt; A transfer unit, used to transfer the parts to be tested between the loading unit, the grinding unit and the Brinell hardness testing unit; A grinding unit, used for grinding the parts transferred by the loading unit; The Brinell hardness testing unit is used to perform Brinell hardness testing on the parts to be tested after being ground by the grinding unit.

[0007] Preferably, it also includes a marking unit. The integration unit controls the marking unit. The transfer unit can transfer the parts to be inspected in the loading unit to the marking unit, and transfer the parts to be inspected marked by the marking unit to the polishing unit.

[0008] Further preferably, the marking unit includes a marking table, a marking area is provided at the center of the marking table, and quick-change clamp I and a marking device are respectively installed on both sides of the marking area. The quick-change clamp I is arranged on the side close to the transfer unit, and the marking device is arranged on the opposite side of the quick-change clamp I.

[0009] Preferably, the optical recognition system includes an optical sensor I and a visual sensor, the optical sensor I is arranged on the side of the visual sensor bracket, and the visual sensor is arranged on the top of the visual sensor bracket.

[0010] Preferably, the loading unit further comprises a positioning plate, and the positioning plate is arranged on the side of the visual sensor bracket.

[0011] Preferably, the transfer unit includes a transfer station, with a robot arm I and a robot arm II provided on both sides of the transfer station respectively. Robot arm I can transfer the parts of the loading unit to the grinding unit and the transfer station in sequence; robot arm II can transfer the parts of the transfer station to the Brinell hardness testing unit and the product collection unit in sequence.

[0012] Preferably, the grinding unit comprises a grinding table, on which a quick-change fixture II and a grinding device are sequentially arranged, and a measuring sensor is connected to a side of the grinding device.

[0013] Preferably, the Brinell hardness testing unit comprises a circular rotating device, a hardness tester and an indentation measuring device, and the hardness tester and the indentation measuring device are respectively arranged on the periphery of the circular rotating device; a plurality of quick-change fixtures III are evenly distributed circumferentially on the surface of the circular rotating device, and the quick-change fixture III can move to just below the hardness tester; an optical sensor II is provided at the center of the circular rotating device, and gaps are left between the hardness tester and the circular rotating device, and between the indentation measuring device and the circular rotating device to accommodate the passage of parts.

[0014] Further preferably, the circular rotating device consists of a circular turntable, a rotating mechanism and a lifting mechanism. The circular turntable has a plurality of grooves evenly distributed around the circumference. The quick-change clamp III is installed in the grooves. The lifting mechanism is arranged at the bottom of the grooves and can drive the quick-change clamp to rise and fall. The rotating mechanism is arranged at the center position of the bottom of the circular turntable and can drive the quick-change clamp III on the circular turntable to rotate to directly below the hardness tester.

[0015] Preferably, it also includes a product collection unit. The integration unit controls the product collection unit. The transfer unit can transfer the parts to be tested by the Brinell hardness testing unit to the product collection unit to distinguish qualified parts from unqualified parts.

[0016] Further preferably, the product collection unit comprises an unqualified product collection table and a qualified product collection table, the qualified product collection table is connected to the conveyor belt and moves in the same direction, and an optical sensor III is provided on the side of the qualified product collection table.

[0017] The second aspect of the present invention discloses a method for performing automated Brinell hardness testing using the above-mentioned automated Brinell hardness testing system, wherein the parts to be tested are placed in a turnover box of a loading unit, and the integrated unit is started. The integrated unit controls the movement of the conveyor belt, and the turnover box moves to the position of the optical recognition system under the drive of the conveyor belt. After the optical recognition system senses the turnover box, it transmits a signal to the integrated unit, and the integrated unit controls the conveyor belt to stop running. The clamping device clamps the turnover box, and the optical recognition system identifies whether there are parts to be tested in the turnover box; if there are parts to be tested in the turnover box, the transfer unit sends the parts to be tested in the turnover box to the grinding unit for grinding, and sends them to the Brinell hardness testing unit for hardness testing.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an automatic Brinell hardness detection system. First, it integrates feeding, grinding, and Brinell hardness detection. The overall process is arranged according to feeding, grinding, and hardness detection, which can realize unattended and automatic detection, and has high detection efficiency. Second, a specially designed feeding unit is used to convey the parts to be inspected (especially parts with complex structures). The turnover box in the feeding unit can be used to transfer the parts to be inspected. The optical recognition system in the feeding unit can identify whether the turnover box on the conveyor belt has reached the specified position and confirm whether there are parts to be inspected in the turnover box. The system does not need to design a special fixture according to the parts to be inspected each time. Instead, for parts to be inspected of any specifications and any shapes, they can be placed in the turnover box, and the turnover box is transmitted by the conveyor belt. The optical recognition system is used to identify and locate the position of the parts to be inspected, so that the automatic detection of the parts to be inspected can be completed, which not only reduces the cost of fixture investment, but also realizes the function of unmanned clamping and feeding. Therefore, the detection system has high detection efficiency and is suitable for automatic hardness detection of parts with multiple specifications and complex shapes.

[0019] Furthermore, the system is provided with a marking unit, which can mark the parts to be inspected, thereby enabling 100% traceability of the parts after final inspection.

[0020] Furthermore, in the transfer unit, loading and grinding share a robot arm for loading and unloading, Brinell hardness testing and product collection share a robot arm for loading and unloading, and the transfer of parts to be inspected is divided into different areas to ensure maximum efficiency. Since the efficiency and time of the transfer of parts to be inspected are inconsistent, a transfer station is set between the two robot arms for transition.

[0021] Furthermore, the measuring sensor provided in the grinding unit can measure the parts to be inspected before grinding, thereby eliminating the grinding idle stroke caused by the thickness difference of the parts to be inspected themselves and the rework caused by the grinding quality not meeting the requirements, and the grinding efficiency is high.

[0022] Furthermore, the rotating mechanism in the circular rotating device can drive the circular turntable to rotate, so that the parts to be inspected on the quick-change fixture III can be rotated to the indentation and measurement position, and the lifting mechanism can drive the quick-change fixture III to rise and fall, so that the parts to be inspected can move to the appropriate indentation position or measurement position, so that the circular turntable can meet the same loading and unloading positions of the indentation and measurement positions, thereby reducing the distance between each loading and unloading position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the Brinell hardness automated testing system of the present invention; Figure 2 It is a structural schematic diagram of a feeding unit of the present invention; Figure 3Schematic diagram of the structure of the marking unit of the present invention; wherein A is a main view and B is a top view; Figure 4 Schematic diagram of the structure of the grinding unit of the present invention; wherein A is a main view and B is a top view; Figure 5 It is a schematic diagram of the structure of the Brinell hardness testing unit of the present invention; wherein A is a main view, B is a top view, and C is a side view.

[0024] In the figure, 1-integrated unit, 2-loading unit, 2-1-transmission track, 2-2-turnover box, 2-3-transmission belt, 2-4-visual sensor, 2-5-optical sensor I, 2-6-clamping device, 2-7-positioning plate, 3-marking unit, 3-1-marking table, 3-2-quick change fixture I, 3-3-marking device, 4-transfer unit, 4-1-transfer station, 4-2-mechanical arm I, 4-3-mechanical arm II, 5-grinding unit, 5-1-quick change fixture II, 5-2-measuring sensor, 5-3-grinding device, 6-Brinell hardness detection unit, 6-1-circular rotating device, 6-2-indentation measuring device, 6-3-hardness tester, 6-4-optical sensor II, 6-5-quick change fixture III, 7-product collection unit, 7-1-unqualified collection table, 7-2-qualified product collection table, 7-3-blocking plate, 7-4-optical sensor III. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] In this article, the number of marking units 3, grinding units 5 and Brinell hardness testing units 6 in the Brinell hardness automated testing system is not limited to one, and multiple units can be connected in parallel as needed. The specific number can be determined based on parameters such as set efficiency indicators, grinding and marking efficiency, etc.

[0028] Herein, the parts to be inspected include but are not limited to metal materials with simple regular shapes, and parts with complex structures, such as blade parts.

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings: An automated Brinell hardness testing system, such as Figure 1 As shown, it includes an integration unit 1, a feeding unit 2, a marking unit 3, a transfer unit 4, a grinding unit 5, a Brinell hardness detection unit 6 and a product collection unit 7.

[0030] The integrated unit 1 is used for collecting, processing, storing, analyzing and controlling data of the feeding unit 2, the marking unit 3, the transfer unit 4, the grinding unit 5, the Brinell hardness testing unit 6 and the product collection unit 7. The integrated unit 1 is preferably an Advantech industrial computer.

[0031] The loading unit 2 is used to transport the parts to be inspected to the target position. Figure 2 As shown, the loading unit 2 includes a transmission track 2-1 and a turnover box 2-2. A transmission belt 2-3 is arranged on the periphery of the transmission track 2-1. The transmission belt 2-3 can move along the transmission track 2-1 under the control of the integrated unit 1. A visual sensor bracket is arranged on the transmission track 2-1 between the transfer unit 4 and the integrated unit 1. A clamping device 2-6 is arranged on the transmission track 2-1 below the visual sensor bracket. The clamping device 2-6 can clamp the turnover box 2-2 on the transmission belt 2-3 under the control of the integrated unit 1. An optical sensor I 2-5 and a positioning plate 2-7 are arranged on the side of the visual sensor bracket. The optical sensor I 2-5 can identify whether the turnover box 2-2 has reached the specified position. The integrated unit 1 can collect the data of the optical sensor I 2-5 and control the clamping device 2-6 to clamp the turnover box 2-2. The optical sensor I 2-5 is preferably a Festo optical sensor; the positioning plate 2-7 can accurately guide and position the turnover box 2-2 on the transmission belt 2-3 to prevent the material from shifting during the transmission process. A visual sensor 2-4 is provided on the top of the visual sensor bracket. The visual sensor 2-4 can identify whether there are parts to be inspected in the turnover box 2-2. The integrated unit 1 can collect data from the visual sensor 2-4 and further control the conveyor belt 2-3 or the transfer unit 4 based on the data. The visual sensor 2-4 is preferably a Cognex vision system. There are several turnover boxes 2-2, which are open-top rectangular structures for storing parts to be inspected. The turnover boxes 2-2 can move along the transmission path driven by the conveyor belt 2-3.

[0032] The marking unit 3 is used to mark the parts to be inspected. Figure 3 As shown, the marking unit 3 includes a marking table 3-1, and a marking area is provided at the center of the marking table 3-1 for placing the parts to be inspected delivered by the feeding unit 2. A quick-change fixture Ⅰ 3-2 and a marking device 3-3 are respectively installed on both sides of the marking area of ​​the marking table 3-1. The quick-change fixture Ⅰ 3-2 is arranged on the side close to the transfer unit 4, and is used to clamp the parts to be inspected delivered by the transfer unit 4 and transfer them to the marking area. The marking device 3-3 is arranged on the opposite side of the quick-change fixture Ⅰ 3-2, and is used to mark the parts to be inspected in the marking area. The integrated unit 1 can collect and store marking data. The marking device 3-3 is preferably a Chongqing Compal pneumatic marking machine.

[0033] The transfer unit 4 is used to transfer the parts to be inspected between the loading unit 2, the marking unit 3, the grinding unit 5, the Brinell hardness testing unit 6 and the product collection unit 7. The transfer unit 4 includes a transfer station 4-1, which is used to temporarily store the parts to be inspected in transit. Preferably, a quick-change fixture can be set on the transfer station 4-1 to ensure the rapid and accurate replacement of the fixture. A mechanical arm Ⅰ 4-2 and a mechanical arm Ⅱ 4-3 are respectively arranged on both sides of the transfer station 4-1. The mechanical arm Ⅰ 4-2 is located at the center of the loading unit 2, the marking unit 3 and the grinding unit 5 to form the shortest part transmission route; the integrated unit 1 can control the mechanical arm Ⅰ 4-2 to transfer the parts to be inspected in the turnover box 2-2 to the marking unit 3 for marking according to the recognition result of the visual sensor 2-4, and control the mechanical arm Ⅰ 4-2 to transfer the parts to be inspected to the grinding unit 5 for grinding after marking, and control the mechanical arm Ⅰ 4-2 to transfer the parts to be inspected to the transfer station 4 after grinding. The robot arm II 4-3 is located at the center of the loading unit 2, the Brinell hardness testing unit 6 and the product collection unit 7. The integrated unit 1 can control the robot arm II 4-3 to transfer the parts to be tested in the transfer station 4 to the Brinell hardness testing unit 6, and transfer the parts to be tested to the corresponding area of ​​the product collection unit 7 according to the measurement results of the indentation measuring device 6-2. The robot arm I 4-2 and the robot arm II 4-3 are preferably ABB six-joint robot arms.

[0034] The grinding unit 5 is used to grind the parts to be inspected. Figure 4As shown, the grinding unit 5 includes a grinding table, on which a quick-change fixture II 5-1 and a grinding device 5-3 are sequentially installed. The quick-change fixture II 5-1 can receive the marked parts to be inspected sent by the robot arm I 4-2. A measuring sensor 5-2 is connected to the side of the grinding device 5-3. The measuring sensor 5-2 is used to measure the thickness of the parts to be inspected before grinding. The integrated unit 1 can collect the measurement data of the measuring sensor 5-2 and determine the grinding amount of the parts to be inspected according to the measurement results. The measuring sensor 5-2 is preferably a Balluff measuring sensor. The grinding device 5-3 is used to grind the parts to be inspected according to the determined grinding amount. The grinding device 5-3 is preferably a Smart grinder.

[0035] The Brinell hardness testing unit 6 is used to perform hardness testing on the parts to be tested. Figure 5 As shown, the Brinell hardness testing unit 6 includes a testing platform, on which a circular rotating device 6-1 is installed. The circular rotating device 6-1 consists of a circular turntable, a rotating mechanism and a lifting mechanism. The circumference of the circular turntable is provided with a plurality of grooves, in which a quick-change fixture III 6-5 is provided. The quick-change fixture III 6-5 can clamp the parts to be tested sent by the robot arm I 4-2; the lifting mechanism is provided at the bottom of the groove, and can drive the quick-change fixture III 6-5 to rise and fall under the control of the integrated unit 1; the rotating mechanism is provided at the center of the bottom of the circular turntable, and can drive the circular turntable to rotate under the control of the integrated unit 1. An optical sensor bracket is provided at the center of the circular turntable surface, and an optical sensor II 6-4 is installed on the top of the optical sensor bracket. The optical sensor II 6-4 is used to detect whether there are parts to be tested in the quick-change fixture 6-5. The optical sensor II 6-4 is preferably a Festo optical sensor. A hardness tester 6-3 is provided on the top of the testing platform and on the side away from the robot arm II 4-3, which is used to indent the parts to be tested. The integrated unit 1 can collect the detection results of the optical sensor II 6-4, and then control the lifting mechanism to rise and fall or control the rotating mechanism to rotate the next quick-change fixture 6-5 to the bottom of the hardness tester 6-3 for further detection. A gap is left between the hardness tester 6-3 and the circular rotating device 6-1 to accommodate the passage of the parts to be tested. The quick-change fixture III 6-5 can move to the bottom of the hardness tester 6-3 through the rotating mechanism and the lifting mechanism. The hardness tester 6-3 is preferably a Special Vision hardness tester. An indentation measuring device 6-2 is also provided on the test table outside the circular rotating device 6-1. The indentation measuring device 6-2 is used to measure the parts to be tested after indentation and determine whether they are qualified. The integrated unit 1 can collect and store the measurement data of the indentation measuring device 6-2, and then control the robot arm II 4-3. A gap is left between the indentation measuring device 6-2 and the circular rotating device 6-1 to accommodate the passage of the parts to be tested. The indentation measuring device 6-2 is preferably the indentation measuring system of Shanghai Special Vision.

[0036] The product collection unit 7 is used to store the qualified and unqualified parts to be inspected. The product collection unit 7 includes an unqualified collection table 7-1 and a qualified product collection table 7-2. An empty turnover box 2-2 is placed on the unqualified collection table 7-1. The robot arm II 4-3 can transfer the unqualified parts to be inspected measured by the indentation measurement device 6-2 to the turnover box 2-2 of the unqualified collection table 7-1 under the control of the integrated unit 1. The qualified product collection table 7-2 is smoothly connected to the conveyor belt 2-3 and can be transmitted in the same direction as the conveyor belt 2-3. It has the same turnover box 2-2 transportation function as the conveyor belt 2-3. An empty turnover box 2-2 is placed on the qualified product collection table 7-2. An optical sensor III 7-4 is provided on the side of the qualified product collection table 7-2 to identify whether the empty turnover box 2-2 conveyed by the conveyor belt 2-3 has reached the designated position. The integrated unit 1 can collect the identification result of the optical sensor III 7-4, and then control the robot arm II 4-3 to transfer the measured qualified parts to the empty turnover box 2-2 that has reached the designated position. A blocking plate 7-3 is provided at the end of the qualified product collection table 7-2 to prevent the turnover box 2-2 from falling.

[0037] The method for testing parts using the above-mentioned Brinell hardness automated testing system has the following specific steps: 1. Preparation. Place the parts to be inspected in the turnover boxes 2-2, and place the turnover boxes 2-2 containing the parts to be inspected on the conveyor belt 2-3 in sequence. At the same time, place empty turnover boxes 2-2 on the unqualified collection table 7-1 and the qualified product collection table 7-2 to store the inspected parts.

[0038] 2. Loading. The integrated unit 1 controls the movement of the conveyor belt 2-3. The turnover box 2-2 containing the parts to be inspected moves to the position of the optical sensor I 2-5 under the drive of the conveyor belt 2-3 and the guidance of the positioning plate 2-7. After the optical sensor I 2-5 senses the turnover box 2-2, the integrated unit 1 controls the conveyor belt 2-3 to stop running, and the clamping device 2-6 clamps the turnover box 2-2 containing the parts to be inspected. The visual sensor 2-4 takes a photo above the turnover box 2-2 to confirm whether there are parts to be inspected in the turnover box 2-2.

[0039] If the visual sensor 2-4 detects that there are parts to be inspected in the turnover box 2-2, the integrated unit 1 controls the robot arm Ⅰ 4-2 to transfer the parts to be inspected to the quick-change fixture Ⅰ 3-2 of the marking unit 3 for marking. Until all the parts to be inspected in the turnover box 2-2 are transferred away by the robot arm Ⅰ 4-2, the integrated unit 1 controls the clamping device 2-6 to release. The conveyor belt 2-3 continues to move, and sends the next turnover box 2-2 containing the parts to be inspected to the position of the optical sensor Ⅰ 2-5 for a new round of loading process. At the same time, the empty turnover box 2-2 that has transferred the parts to be inspected and the turnover box 2-2 that has not been detected by the visual sensor 2-4 are sent to the qualified product collection table 7-2 as the conveyor belt 2-3 continues to move to store the qualified parts.

[0040] 3. Marking. The parts to be inspected transferred to the marking unit 3 are transferred to the marking area by the quick-change fixture I 3-2 under the control of the integrated unit 1. The marking device 3-3 will mark the parts to be inspected in the marking area, the integrated unit 1 will store the marking data, and the quick-change fixture I 3-2 will reset.

[0041] 4. Grinding. The integrated unit 1 controls the robot arm Ⅰ 4-2 to transfer the marked parts to be inspected to the quick-change fixture Ⅱ 5-1. The quick-change fixture Ⅱ 5-1 clamps the parts to be inspected and sends them to the measuring sensor 5-2 for thickness measurement. After the measurement is completed, the integrated unit 1 determines the safe idle travel stroke of the grinding device 5-3 according to the measurement results. After that, the integrated unit 1 controls the quick-change fixture Ⅱ 5-1 to send the parts to be inspected to the position of the grinding device 5-3 and grind them according to the set grinding amount. After the grinding is completed, the quick-change fixture Ⅱ 5-1 is reset, and the integrated unit 1 controls the robot arm Ⅰ 4-2 to place the polished parts to be inspected at the transfer station 4.

[0042] 5. Brinell hardness test. The integrated unit 1 controls the robot arm II 4-3 to transfer the parts to be tested in the transfer station 4 to the quick-change fixture III 6-5 of the circular rotating device 6-1. The integrated unit 1 controls the rotating mechanism to rotate the parts to be tested to the hardness tester 6-3 station. After the optical sensor II 6-4 senses the parts to be tested, the integrated unit 1 controls the lifting mechanism to drive the quick-change fixture III 6-5 to lift, lift the quick-change fixture III 6-5 to the indentation position, and start the hardness tester 6-3 to indent. After the indentation is completed, the lifting mechanism drives the quick-change fixture III 6-5 to reset, and the rotating mechanism rotates again to send the parts to be tested to the indentation measuring device 6-2 station. The indentation measuring device 6-2 moves to contact with the parts to be tested for measurement. According to the acceptance rules, it is judged whether the parts to be tested are qualified. The integrated unit 1 collects and stores the measurement results of the indentation measuring device 6-2.

[0043] 6. The empty turnover box 2-2 is transported by the conveyor belt 2-3 to the qualified product collection table 7-2. After the optical sensor III 7-4 recognizes that the empty turnover box 2-2 has arrived at the specified position, the integrated unit 1 controls the robot arm II 4-3 to transfer the qualified parts to be inspected into the empty turnover box 2-2 according to the feedback data of the optical sensor III 7-4.

[0044] Under the control of the integrated unit 1, unqualified parts to be inspected are sent by the robot arm II 4-3 to the turnover box 2-2 of the unqualified collection station 7-1 for storage.

[0045] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A Brinell hardness automated testing system, characterized in that: It comprises an integration unit (1), a loading unit (2), a transfer unit (4), a grinding unit (5) and a Brinell hardness testing unit (6); An integrated unit (1) for controlling a feeding unit (2), a transfer unit (4), a grinding unit (5) and a Brinell hardness testing unit (6); A loading unit (2) is used to transfer the parts to be inspected to the grinding unit (5); the loading unit (2) comprises a transmission track (2-1) and a turnover box (2-2); a transmission belt (2-3) is provided on the outer periphery of the transmission track (2-1); a visual sensor bracket is provided on the transmission track (2-1); a clamping device (2-6) is provided on the transmission track (2-1) below the visual sensor bracket; an optical recognition system is provided on the visual sensor bracket; and the turnover box (2-2) can move with the transmission belt (2-3); A transfer unit (4) is used to transfer the parts to be tested between the loading unit (2), the grinding unit (5) and the Brinell hardness testing unit (6); A grinding unit (5), used for grinding the parts to be inspected transferred by the feeding unit (2); The Brinell hardness testing unit (6) is used to perform Brinell hardness testing on the part to be tested after being polished by the polishing unit (5).

2. The Brinell hardness automated testing system according to claim 1, characterized in that: It also includes a marking unit (3). The integration unit (1) controls the marking unit (3). The transfer unit (4) can transfer the parts to be inspected in the loading unit (2) to the marking unit (3), and transfer the parts to be inspected marked by the marking unit (3) to the polishing unit (5).

3. The Brinell hardness automated testing system according to claim 2, characterized in that: The marking unit (3) comprises a marking platform (3-1), a marking area being provided at the center of the marking platform (3-1), a quick-change fixture I (3-2) and a marking device (3-3) being installed on both sides of the marking area, the quick-change fixture I (3-2) being arranged on a side close to the transfer unit (4), and the marking device (3-3) being arranged on the opposite side of the quick-change fixture I (3-2).

4. The Brinell hardness automated testing system according to any one of claims 1 to 3, characterized in that: The transfer unit (4) includes a transfer station (4-1). A robotic arm I (4-2) and a robotic arm II (4-3) are respectively arranged on both sides of the transfer station (4-1). The robotic arm I (4-2) can sequentially transfer the parts to be inspected of the loading unit (2) to the grinding unit (5) and the transfer station (4-1); the robotic arm II (4-3) can sequentially transfer the parts to be inspected of the transfer station (4-1) to the Brinell hardness testing unit (6) and the product collection unit (7).

5. The Brinell hardness automated testing system according to any one of claims 1 to 3, characterized in that: The grinding unit (5) comprises a grinding table, on which a quick-change fixture II (5-1) and a grinding device (5-3) are arranged in sequence, and a measuring sensor (5-2) is connected to the side of the grinding device (5-3).

6. The Brinell hardness automated testing system according to any one of claims 1 to 3, characterized in that: The Brinell hardness testing unit (6) comprises a circular rotating device (6-1), a hardness tester (6-3) and an indentation measuring device (6-2), wherein the hardness tester (6-3) and the indentation measuring device (6-2) are respectively arranged on the periphery of the circular rotating device (6-1); a plurality of quick-change fixtures III (6-5) are evenly distributed on the surface of the circular rotating device (6-1) in the circumferential direction, and the quick-change fixtures III (6-5) can move to the position directly below the hardness tester (6-3); an optical sensor II (6-4) is arranged at the center of the circular rotating device (6-1), and gaps are left between the hardness tester (6-3) and the circular rotating device (6-1), as well as between the indentation measuring device (6-2) and the circular rotating device (6-1) to accommodate the passage of the part to be tested.

7. The Brinell hardness automated testing system according to claim 6, characterized in that: The circular rotating device (6-1) is composed of a circular turntable, a rotating mechanism and a lifting mechanism. The circular turntable is evenly distributed with a plurality of grooves in the circumferential direction. The quick-change fixture III (6-5) is installed in the grooves. The lifting mechanism is arranged at the bottom of the grooves and can drive the quick-change fixture (6-5) to rise and fall. The rotating mechanism is arranged at the center of the bottom of the circular turntable and can drive the quick-change fixture III (6-5) on the circular turntable to rotate to the bottom of the hardness tester (6-3).

8. The Brinell hardness automated testing system according to any one of claims 1 to 3, characterized in that: It also includes a product collection unit (7). The integration unit (1) controls the product collection unit (7). The transfer unit (4) can transfer the parts to be tested that have passed the Brinell hardness testing unit (6) to the product collection unit (7) to distinguish between qualified parts and unqualified parts.

9. The Brinell hardness automated testing system according to claim 8, characterized in that: The product collection unit (7) comprises an unqualified product collection table (7-1) and a qualified product collection table (7-2); the qualified product collection table (7-2) is connected to the conveyor belt (2-3) and moves in the same direction; an optical sensor III (7-4) is provided on the side of the qualified product collection table (7-2).

10. A method for performing automated Brinell hardness testing using the automated Brinell hardness testing system according to any one of claims 1 to 9, characterized in that: The parts to be inspected are placed in the turnover box (2-2) of the loading unit (2), the integrated unit (1) controls the movement of the conveyor belt (2-3), the turnover box (2-2) is driven by the conveyor belt (2-3) to move to the position of the optical recognition system, after the optical recognition system senses the turnover box (2-2), it transmits a signal to the integrated unit (1), the integrated unit (1) controls the conveyor belt (2-3) to stop running, the clamping device (2-6) clamps the turnover box (2-2), and the optical recognition system identifies whether there are parts to be inspected in the turnover box (2-2); if there are parts to be inspected in the turnover box (2-2), the transfer unit (4) sequentially sends the parts to be inspected in the turnover box (2-2) to the grinding unit (5) for grinding, and to the Brinell hardness testing unit (6) for hardness testing.

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