Automatic material room temperature tensile property detection system and detection method

Abstract

The invention provides a system for detecting the room-temperature tensile property of a material. The system is high in automation degree and high in detection repetition precision. The system comprises a tensile machine, a mechanical arm, a central control module, a sample caching module, a sample size measurement module and a sample collection and identification module. The central control module is used for inputting sample detection information, identifying samples, centrally controlling the detection system and reading and processing data; the sample caching module is used for stacking the identified tensile samples in a caching groove of the sample caching module and is used for sorting and normalizing the samples and caching and detecting the samples; the sample size measuring module is used for measuring the tensile length and necking diameter of the tensile sample before and after testing; and the sample collection and identification module completes sample storage according to a preset numbering rule after completing detection of the tensile sample. The invention also provides a method for detecting the room-temperature tensile property of the material, which is high in automation degree and high in detection repetition precision, and the method realizes full-step automatic detection of tensile property test.

Description

Technical Field

[0001] The invention relates to a method for detecting the room temperature tensile properties of a material, and in particular to a method and a detection system for detecting the room temperature tensile properties of a material with high automation and high detection repetition accuracy. Background Art

[0002] The room temperature tensile test method is a common mechanical property test method involving metals, plastics and other materials. Its purpose is to understand the deformation characteristics and failure mechanism of materials under stress. By analyzing the stress-strain curve of the material during the tensile process and the change in gauge length and cross-sectional size before and after the tensile process, the mechanical property parameters such as strength and plasticity of the material can be analyzed. It is widely used in engineering design and manufacturing processes, and is usually referenced by the implementation standard GB / T228.1. The typical tensile process includes the following 7 steps: (1) sample anti-mixing identification; (2) sample pre-tensile treatment, including the original tensile span identification on the sample surface and the measurement of the sample diameter before tensile; (3) tensile plan preparation, determination and issuance; (4) sample clamping and extensometer fixation (involved in yield strength testing); (5) sample stretching, including yield strength measurement and tensile strength measurement; (6) sample post-tensile treatment, including span identification measurement and necking diameter measurement after sample splicing; (7) sample packaging and sealing.

[0003] Due to the wide application range of material tensile testing methods and the large demand for testing, the existing technology has carried out many technical improvements in improving the degree of automation, testing efficiency, and stability of test results: (1) Technical improvements in single steps or system components. For example, the patent application with patent application number CN115597539A, "Automatic measurement device for arc specimens for fully automatic tensile testing machine system", provides an automatic measurement device for measuring arc specimens, which can realize the measurement of arc specimens; the patent with authorization announcement number CN212197473U, "A feeding manipulator for fully automatic tensile test specimens", provides a gantry slide module feeding auxiliary manipulator. The above technologies have improved the local automation rate to a certain extent, but the overall automation rate of tensile testing has limited room for improvement. (2) Technical improvements in the tensile process of similar samples. Application No. CN116678739A "A high-throughput automatic stretching device and method based on additive manufacturing samples" provides an automatic stretching device and stretching method, and authorization announcement No. CN218823717U "An automatic stretching test device" provides a stretching test machine, but it only involves a single stretching test machine and only targets rubber sealing rings. The sample stretching test involved in the above method has a certain degree of process similarity with the metal material stretching test specimen specified in GB / T228.1, but both are suitable for special sample stretching processes, and both cannot achieve fully automatic detection of the 7 steps of the stretching test.

[0004] Therefore, a detection device is proposed which can realize full-automatic detection of all steps of tensile test of different samples and different materials, and at the same time achieve high detection repetition accuracy, which has application significance for material tensile performance detection. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies in the prior art and to provide a method and system for detecting room temperature tensile properties of different samples and materials with high automation and high detection repetition accuracy.

[0006] The present invention provides a room temperature tensile performance testing system for materials with high automation and high detection repeatability, including a tensile testing machine, a mechanical arm, a central control module, a sample cache module, a sample size measurement module, and a sample collection and identification module. The central control module inputs sample detection information and identifies samples, and realizes control of the detection device and reading of measurement data by connecting with each module, exchanging data and issuing operation instructions; the central control module inputs sample detection information and controls the mechanical arm after identifying, and realizes automatic sample delivery and transfer between modules; the sample cache module stores the marked tensile specimens in its cache slot for cache testing; the tensile testing machine clamps the two ends of the sample transmitted by the mechanical arm and performs automatic detection of yield strength and tensile strength; the sample size measurement module automatically measures the tensile length and necking diameter of the tensile specimen after the tensile testing machine completes the detection; after the detection and size measurement are completed, the sample collection and identification module stores the tensile specimens after the detection according to the preset numbering rules. The present invention also provides a room temperature tensile performance testing method for materials with high automation and high detection repeatability, which realizes the automated detection of all steps of the tensile performance test.

[0007] The present invention is achieved through the following technical solutions:

[0008] An automated material room temperature tensile property testing system comprises a tensile machine 1, a mechanical arm 6, a central control module 2, a sample buffer module 3, a sample size measurement module 5 and a sample collection identification module 4; wherein:

[0009] The central control module 2 includes a control system 201, a system host computer 206, and a sample identification component 202. The control system 201 records sample detection information and controls the sample identification component 202 to identify the sample; the control system 201 and the system host computer 206 are connected to the tensile machine 1, the sample cache module 3, the robotic arm 6, the sample size measurement module 5, and the sample collection and identification module 4 to exchange data and issue operation instructions to control the actions of each module of the detection system, set and select the detection plan of the detection system, enter and record sample information, and receive and process signals and data.

[0010] The control system 201 can be specifically controlled by PLC, which can be integrated into the control system 201 and uniformly installed in the central control module 2, or can be separately set as the overall control PLC in the central control module 2 and the PLC in each module, including the tensile machine PLC, the sample buffer module PLC, the mechanical arm PLC, the sample size measurement module PLC, and the sample collection identification module PLC. When they are separately set, it is convenient for wiring, later maintenance, troubleshooting, etc.

[0011] The sample cache module 3 includes a sample storage device and a sample identification reader 303 arranged at the sample outlet of the sample storage device. The sample storage device stores the tensile sample identified by the sample identification component 202. The sample identification reader 303 reads the identification of the tensile sample before the sample is taken out for stretching, and obtains and binds the sample information in the control system 201 of the central control module and the system host computer 206.

[0012] The tensile testing machine 1 includes an upper chuck 105 and a lower chuck 108 which are relatively arranged and can clamp the two ends of the sample for stretching, and a chuck pressure providing device for controlling the clamping pressure of the upper chuck 105 and the lower chuck 108 of the tensile testing machine; after receiving the action command issued by the control system 201 of the central control module 2, the tensile testing machine performs a tensile test on the sample and transmits the test data to the central control module 2.

[0013] The robot arm 6 includes a robot arm trunk 602 and a plurality of robot arm joints 603 arranged in the robot arm trunk 602, as well as a gripper 605 and an extensometer 606 installed on the robot arm 6. The robot arm trunk 602 plays a role in structural strength. According to actual needs, a plurality of robot arm joints 603 are arranged in the trunk to jointly play the role of grabbing samples in multiple degrees of freedom. The robot arm 6 transports the tensile specimens that have been marked in the specimen cache module 3 to the tensile device of the tensile machine 1, uses the extensometer 606 to assist the tensile device in performing a yield strength test, and transports the specimens to the specimen size measurement module 5 after the tensile machine 1 completes the tensile strength test, and transports the specimens that have completed the size test to the specimen collection and identification module 4.

[0014] The sample size measurement module 5 includes a rotatable clamping cylinder 1 507 and a clamping cylinder 2 510 which are relatively arranged and can clamp the two ends of the sample respectively, and a camera device arranged perpendicular to the clamping position; the camera device perpendicular to the clamping position can measure the length of the sample and measure the necking diameter when the rotatable clamping cylinder 1 507 and the clamping cylinder 2 510 clamp the two ends of the sample and rotate at different angles.

[0015] The sample collection and identification module 4 includes a sample collection device, a sample moving device, and a sample positioning device. The sample moving device is arranged at the bottom of the sample collection device and can move the position of the sample under the instruction of the central control module 2. The sample positioning device is arranged on the sample moving device to sense the sample position and transmit it to the central control module 2.

[0016] Furthermore, the sample identification component 202 includes a sample identification component base 2021 for placing the tensile sample 8, and a sample identification component fiber laser 1 2022 and a sample identification component fiber laser 2 2023 arranged at both ends of the sample identification component base 2021, which are used to etch the tensile sample end face QR code identification 804 on the end face of the tensile sample 8.

[0017] Furthermore, the central control module 2 further comprises a central control module operating platform 205, the sample identification component base 2021 is arranged on the central control module operating platform 205, and a human-machine interaction interface 201, a sample information barcode scanner 203 and a detection system power switch 204 are also arranged on the central control module operating platform 205. The human-machine interaction interface 201 can realize manual input and control when manual control is required, and the detection system power switch is used for power on and power off control of the entire device.

[0018] Furthermore, the clamp pressure providing device of the tensile machine 1 is a tensile machine hydraulic press 111, and the tensile machine 1 also includes a tensile machine base 101, and the two sides of the upper top cover are respectively provided with a tensile machine column 102, and the middle part of the upper top cover is provided with a tensile machine lower clamp 107, and a tensile machine lower clamp 108 installed on the tensile machine lower clamp 107; a tensile machine moving crossbeam 103 is also horizontally arranged between the tensile machine columns 102, and the tensile machine moving crossbeam 103 is provided on the upper and lower sides of the tensile machine base 101. A tensile machine force sensor 104 and an upper clamp 106 of the tensile machine, as well as an upper chuck 105 of the tensile machine installed on the upper clamp 106 of the tensile machine are arranged in sequence below the beam 103. The tensile machine moving crossbeam 103 drives the upper clamp 106 and the upper chuck 105 of the tensile machine installed thereon to move up and down along the column 102, realizing relative movement with the lower chuck of the tensile machine, thereby completing the stretching of the sample. The tensile machine force sensor 104 detects the tensile force value when the sample is stretched.

[0019] Furthermore, the tensile machine 1 also includes a tensile machine lifting ring 109 fixed above the tensile machine upper beam 110, which is convenient for carrying, installing and debugging the tensile machine; and a tensile machine power switch 113 for controlling the power supply of the tensile machine and a tensile machine emergency stop switch 112 for stopping the tensile machine in an emergency.

[0020] Furthermore, the sample storage device of the sample cache module 3 includes a cache slot 301, a transverse positioning slot 302, and a sample identification code reader 303; the cache slot 301 is a deep slot with an opening at the bottom and no cover on the top, and forms a certain angle with the ground as a whole. The bottom opening of the cache slot 301 is connected to the transverse positioning slot 302, so that the sample stored in the cache slot 301 can be moved to the transverse positioning slot 302 under the action of gravity, which is convenient for the robot arm to take the sample from the opening of the transverse positioning slot; a sample identification code reader 303 is also provided on the side of the transverse positioning slot 302. When the robot arm takes the sample from the transverse positioning slot, the sample identification code reader 303 reads the sample information, and binds the sample information in the control system 201 of the central control module and the system host computer 206 for data recording and processing.

[0021] Furthermore, the sample cache module 3 also includes a sample cache module mounting base 305 and a sample cache module supporting columns 306; the sample cache module mounting base 305 is supported by four sample cache module supporting columns 306, and the sample cache module supporting columns 306 are arranged and fixed on the ground; the gap between the sample cache module mounting base 305 and the cache slot 301 is provided with a cache slot mounting pad 304.

[0022] Furthermore, the sample collection device includes a sample collection lower bottom box 404 and a sample collection tube 403, and the sample collection lower bottom box 404 is provided with a plurality of grooves, in which the sample collection tube 403 is installed; the sample moving device includes a lower bottom box mounting frame 409, a movable rail 405, a movable rail motor 406, and a movable rail frame 410 arranged at the bottom of the sample collection lower bottom box 404; the lower bottom box mounting frame 409 is placed on the movable rail 405; there are a plurality of movable rails 405, which are erected between the movable rail frame 410 composed of two structural support rods, and each lower bottom box mounting frame movable rail 405 is driven to rotate by the corresponding movable rail motor 406; the sample positioning device includes a lower bottom box mounting frame positioning sensor 1 407 and a lower bottom box mounting frame positioning sensor 2 408 arranged at both ends of the movable rail frame 410, which are used to sense the position of the lower bottom box mounting frame 409, and transmit the sensing signal to the control system of the central control module 2, and the control system controls the movement of the movable rail motor 406, thereby controlling the position of the lower bottom box mounting frame 409. Each collection bottom box 404 and the bottom of the sample collection tube 403 are provided with corresponding numbers. After the sample size measurement is completed, the central control module sends a sample delivery instruction to the robot 6, and after the sample is delivered to the specific sample collection tube, the number is bound to the sample information in the central control module, so that the sample can be quickly retrieved.

[0023] Furthermore, the sample collection identification module 4 also includes a sample collection identification module mounting base 401 and a sample collection identification module support column 402 . Four sample collection identification module support columns 402 are arranged below the sample collection identification module mounting base 401 , and a movable rail frame 410 is installed above the mounting base 401 .

[0024] Furthermore, the sample size measurement module 5 also includes a slide module motor 1 503, a slide module lead screw 1 504, a slide module moving base 1 505, an adapter block 1 506, a driven rotating plate 522, a sample size measurement module force sensor 511, an adapter block 2 512, a slide module motor 2 513, a camera mounting base 514, a slide module moving base 2 515, a slide module lead screw 2 517, and a slide module mounting base 518;

[0025] in:

[0026] The slide module mounting base 518 is vertically mounted with a slide module lead screw 2 517 and a slide module motor 2 513. The slide module movable base 2 515 is mounted on the slide module lead screw 2 517. The slide module lead screw 2 517 is driven to rotate by the slide module motor 2 513, driving the slide module movable base 2 515 located thereon to move vertically along the slide module lead screw 2 517. The slide module movable base 2 515 is provided with a camera mounting base 514. The camera 516 is mounted on the camera mounting base 514, and the camera lens is aimed at the clamping position of the tensile specimen below.

[0027] A slide module lead screw 1 504 is installed on one side of the slide module lead screw 2 517 and in a direction perpendicular to the slide module lead screw 2 517. The slide module movable base 1 505 is installed on the slide module lead screw 1 504. The bottom of the adapter block 1 506 is connected to the slide module movable base 1 505, and the side is connected to the driven rotating plate 522. The clamping cylinder 1 507 is installed on the driven rotating plate 522. The slide module lead screw 1 504 is driven by the slide module motor 1 503, driving the slide module movable base 1 505 located thereon to move horizontally along the slide module lead screw 1.

[0028] An adapter block 2 512 is installed on the other side of the slide module screw rod 2 517, and a rotating motor 521 and a clamping cylinder 2 510 driven to rotate by the rotating motor 521 are installed on the adapter block 2 512 toward the side of the clamping cylinder 1 507. The clamping cylinder 1 507 and the clamping cylinder 2 510 are arranged opposite to each other to respectively clamp the two ends of the sample that has been stretched and broken so that the cross section of the sample can still be spliced.

[0029] Furthermore, a sample size detection module force sensor 511 is provided between the rotating motor 521 and the second clamping jaw cylinder 510 to control the pressing force when the broken sample 1 508 and the broken sample 2 509 are spliced.

[0030] Furthermore, the sample size measurement module 5 also includes a sample size measurement module mounting base 501, with four sample size measurement module supporting columns 502 provided at the bottom, and the slide module screw 1 504, slide module mounting base 518 and adapter block 2 512 fixed on the top.

[0031] Furthermore, an automated material room temperature tensile properties testing system as described in claim 1 is characterized in that: the robotic arm 6 also includes a robotic arm base 601, a jaw adapter block 604, the robotic arm base 601 is fixedly installed, the plurality of robotic arm trunks 602 and corresponding robotic arm joints 603 are connected in series, one end is fixed on the robotic arm base 601, and the other end is connected to the jaw adapter block 604; the tensile specimen jaw 605 and the extensometer 606 are installed on the jaw adapter block 604 and the jaw connection block 604.

[0032] Furthermore, it also includes a guardrail 7, which includes a guardrail upright pole 701, a guardrail protection net 702 and a detection system status light 703; the guardrail upright poles 701 are fixed on the ground, and a guardrail protection net 702 is provided between every two guardrail upright poles 701, which is used to improve the safety of operators when the detection system is working; the guardrail 7 is also provided with a detection system status light 703.

[0033] An automated material room temperature tensile property testing method comprises the following steps:

[0034] S1. Import the sample information of the tensile test specimen into the central control module and mark it;

[0035] S2, placing the marked tensile specimen into a sample buffer module for storage;

[0036] S3, initializing the detection system in the central control module control system, and each device and module component moves to the initialization position;

[0037] S4, the central control module starts the detection system;

[0038] S5. Controlled by the system PLC, the robotic arm grabs the tensile specimen from the preset position of the specimen buffer module and reads the specimen information;

[0039] S6. Under the control of the system PLC, the mechanical arm clamps the tensile specimen onto the tensile testing machine, and the tensile testing machine chuck clamps the tensile specimen, and the specimen is stretched according to the strain rate during the yield period; the system PLC feedbacks and controls, and after reaching the yield point, the system PLC uploads the yield point tensile force value to the system host computer, and the host computer calculates the yield strength of the specimen based on the uploaded data;

[0040] S7, controlled by the system PLC, the tensile machine stretches the sample at a preset strain rate for testing tensile strength until the sample breaks, and uploads the breaking force value to the system host computer, which calculates the tensile strength of the sample based on the uploaded data;

[0041] S8. With the feedback and control of the system PLC, the robot arm clamps the two halves of the broken sample to the sample size measurement module respectively, and the clamping claw cylinder of the sample size measurement module clamps them respectively;

[0042] S9, controlled by the system PLC, the sample size measurement module detects the extension length and neck diameter of the sample after fracture, and uploads the detected data to the system host computer, which calculates the elongation and section shrinkage rate based on the uploaded data;

[0043] S10. Under the control of the system PLC, the robotic arm clamps the two halves of the sample into the sample collection module respectively.

[0044] Furthermore, in step S9, the fractured sample is rotated to different angles, and the diameters of the necking parts at different angles are measured. By measuring the diameters of the necking parts d1...dn at multiple rotation angles and fitting them through the system host computer 206, a corrected equivalent circular necking diameter ds is obtained.

[0045] The detection system and detection method provided by the present invention have the following technical effects:

[0046] 1. High degree of automation and multiple test items. The room temperature tensile property test method and test system provided by the present invention can automatically complete the whole process from sample identification to detection and identification collection by the machine. The system PLC can complete the control and feedback of force value. The sample size measurement module can measure the fracture extension length and necking diameter of the sample, which can be calculated by the host computer. The yield strength, tensile strength, elongation and cross-sectional shrinkage of the sample can be fully automatically tested.

[0047] 2. High detection repetition accuracy. Since fully automatic machine detection is realized, manual participation is greatly reduced, which eliminates the low efficiency and error rate caused by manual operation, realizes continuous repeated detection, and improves detection accuracy.

[0048] 3. High detection efficiency and good application prospects. The room temperature tensile property detection method and detection system of the material provided by the present invention, the multiple tensile specimens stored in the buffer tank are subjected to tensile detection, data collection and result calculation one by one under the system mechanism and control mode, without redundant beats wasting detection time, and without manual detection process jamming, until all the samples to be tested in the buffer tank are tested, the detection efficiency is high and the application prospects are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A schematic top view of a preferred embodiment of the present invention;

[0050] Figure 2 It is a schematic front view of a preferred embodiment of the present invention;

[0051] Figure 3 A schematic side view of a preferred embodiment of the present invention;

[0052] Figure 4 It is another side view schematic diagram of a preferred embodiment of the present invention;

[0053] Figure 5 It is a front view schematic diagram of a tensile testing machine of a preferred embodiment of the present invention;

[0054] Figure 6 It is a top view schematic diagram of a sample identification component of a control module in a preferred embodiment of the present invention;

[0055] Figure 7 A schematic diagram of a tensile specimen and end face marking in a preferred embodiment of the present invention;

[0056] Figure 8 It is a schematic diagram of the upper and lower halves of a tensile specimen after fracture in a preferred embodiment of the present invention;

[0057] Fig. 9 A schematic side view of a sample buffer module according to a preferred embodiment of the present invention;

[0058] Fig.10 A schematic top view of a sample buffer module according to a preferred embodiment of the present invention;

[0059] Fig.11 It is a schematic front view of a sample collection identification module of a preferred embodiment of the present invention;

[0060] Fig.12 A schematic top view of a sample collection identification module according to a preferred embodiment of the present invention;

[0061] Fig.13 It is a schematic side view of a sample size measurement module according to a preferred embodiment of the present invention;

[0062] Fig.14 A schematic top view of a sample size measurement module according to a preferred embodiment of the present invention;

[0063] In the figure: 1-tensile testing machine, 101-tensile testing machine base, 102-tensile testing machine column, 103-tensile testing machine moving beam, 104-tensile testing machine force sensor, 105-tensile testing machine upper chuck, 106-tensile testing machine upper fixture, 107-tensile testing machine lower fixture, 108-tensile testing machine lower chuck, 109-tensile testing machine lifting ring, 110-tensile testing machine upper beam, 111-tensile testing machine hydraulic press, 112-tensile testing machine emergency stop switch, 113-tensile testing machine power switch, 2-central control module, 201-human-computer interaction interface, 202-sample identification component, 2021-sample identification component base, 2022-sample identification component fiber laser 1, 2023-sample identification component fiber laser 2, 203-sample information Barcode scanner, 204-detection system power switch, 205-central control module operation platform, 206-system host computer, 3-sample cache module, 301-cache slot, 302-lateral positioning slot, 303-sample identification reader, 304-cache slot mounting pad, 305-sample cache module mounting base, 306-sample cache module support column, 4-sample collection identification module, 401-sample collection identification module mounting base, 402-sample collection identification module support column, 403-sample collection tube, 404-sample collection bottom box, 405-bottom box mounting frame moving rail, 406-moving rail motor, 407-bottom box mounting frame positioning sensor 1, 408-bottom box mounting frame positioning sensor Sensor 2, 409-lower bottom box installation frame, 410-movable rail frame, 5-sample size measurement module, 501-sample size measurement module installation base, 502-sample size measurement module support column, 503-slide module motor 1, 504-slide module screw 1, 505-slide module moving base 1, 506-adapter block 1, 507-grip cylinder 1, 508-broken sample 1, 509-broken sample 2, 510-grip cylinder 2, 511-sample size measurement module force sensor, 512-adapter block 2, 513-slide module motor 2, 514-camera installation base, 515-slide module moving base 2, 516-camera, 517-slide module screw 2, 51 8-slide module mounting base, 519-system PLC, 520-system PLC mounting base plate, 521-rotating motor, 522-driven rotating plate, 6-mechanical arm, 601-mechanical arm base, 602-mechanical arm stem, 603-mechanical arm joint, 604-grip adapter block, 605-tensile specimen gripper, 606-extensometer, 7-guardrail, 701-guardrail upright, 702-guardrail net, 703-detection system status light, 8-tensile specimen, 801-tensile specimen clamping section, 802-tensile specimen test section, 803-tensile specimen original gauge length, 804-tensile specimen end face QR code mark, 805-upper half tensile specimen, 806-lower half tensile specimen. DETAILED DESCRIPTION

[0064] In this section, the detection system and detection method provided by the present invention will be further described in conjunction with specific embodiments. It should be noted that the embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. Those skilled in the art may make various changes or modifications to the present invention without substantial changes, which also fall within the scope defined by the claims attached to this application.

[0065] Example 1

[0066] An automated material room temperature tensile property testing system comprises a tensile machine 1, a mechanical arm 6, a central control module 2, a sample buffer module 3, a sample size measurement module 5 and a sample collection identification module 4; wherein:

[0067] The central control module 2 includes a control system 201, a system host computer 206, and a sample identification component 202. The control system 201 records sample detection information and controls the sample identification component 202 to identify the sample; the control system 201 is connected to the tensile machine 1, the sample cache module 3, the robotic arm 6, the sample size measurement module 5, and the sample collection and identification module 4 to exchange data and issue operation instructions to control the actions of each module of the detection system, set and select the detection plan of the detection system, enter and record sample information, and receive and process signals and data.

[0068] The control system 201 can be specifically controlled by PLC. PLC can be integrated in the control system 201 and uniformly installed in the central control module 2, or it can be separately set as the general control PLC in the central control module 2 and the PLC in each module, including the tensile machine PLC, the sample buffer module PLC, the mechanical arm PLC, the sample size measurement module PLC, and the sample collection identification module PLC. It is convenient for wiring, later maintenance, troubleshooting, etc. when they are set separately. The system host computer 206 can be an independent computer set in the detection system, and has the function of calculating the detection results according to the calculation method specified in GB228.1 or relevant technical standards from the measurement data obtained from the PLC. Since PLC control technology, computers and calculation methods are well known in the industry, any existing technology that can realize this function can be used, and it will not be repeated here. Of course, in addition to the use of PLC selected in this embodiment, other existing technologies that can realize control and data and signal feedback functions can also be used.

[0069] The tensile testing machine 1 includes an upper chuck 105 and a lower chuck 108 which are relatively arranged and can clamp the two ends of the sample for stretching, and a chuck pressure providing device for controlling the clamping pressure of the upper chuck 105 and the lower chuck 108 of the tensile testing machine; after receiving the action command issued by the control system 201 of the central control module 2, the tensile testing machine performs a tensile test on the sample and transmits the test data to the central control module 2.

[0070] The sample cache module 3 includes a sample storage device and a sample identification reader 303 arranged at the outlet of the sample storage device; the sample identification reader 303 reads the identification of the stretching sample before the sample is taken out for stretching, and obtains and binds the sample information in the control system 201 of the central control module and the system host computer 206.

[0071] The mechanical arm 6 includes a mechanical arm trunk 602 and a plurality of mechanical arm joints 603 connected in series with the mechanical arm trunk 602, as well as a gripper 605 and an extensometer 606 installed on the mechanical arm 6; the mechanical arm trunk 602 plays a role in structural strength, and a plurality of mechanical arm joints 603 are arranged in the trunk according to actual needs, which together play the role of grabbing samples in multiple degrees of freedom. The mechanical arm 6 transports the tensile specimens that have been marked in the specimen buffer module 3 to the tensile device of the tensile machine 1, uses the extensometer 606 provided to assist the tensile device in performing yield strength test, and transports the specimens to the specimen size measurement module 5 after the tensile machine 1 completes the tensile strength test, and transports the specimens that have completed the size test to the specimen collection and identification module 4.

[0072] The sample size measurement module 5 includes a rotatable clamping jaw cylinder 1 507 and a rotatable clamping jaw cylinder 2 510 which are arranged opposite to each other and can clamp the two ends of the sample respectively, and a camera device arranged perpendicular to the clamping jaw. The camera device perpendicular to the position of the clamping jaw can measure the length of the sample and measure the necking diameter when the rotatable clamping jaw cylinder 1 507 and the rotatable clamping jaw cylinder 2 510 clamp the two ends of the sample and rotate at different angles. When the rotatable clamping jaw cylinder 1 507 and the rotatable clamping jaw cylinder 2 510 rotate, one is active and the other is driven, ensuring that the ends of the sample that has been stretched and broken are accurately engaged when rotating.

[0073] The sample collection and identification module 4 includes a sample collection device, a sample moving device, and a sample positioning device. The sample moving device is arranged at the bottom of the sample collection device, and can realize the movement of the position of the sample under the instruction of the central control module 2. The sample positioning device is arranged on the sample moving device, and senses the position of the sample and transmits it to the central control module 2; each collection bottom box 404 and the bottom of the sample collection tube 403 are provided with corresponding numbers. After the sample size measurement is completed, the central control module sends a sample delivery instruction to the robot 6, and after the sample is delivered to the specific sample collection tube, the number is bound to the sample information in the central control module, which can realize the rapid retrieval of the sample.

[0074] Example 2

[0075] On the basis of Example 1, the tensile machine of this embodiment is provided with a chuck pressure providing device, which can control the pressure of the upper and lower chucks. Any device that can realize the pressure providing function in the prior art can be used in the present invention, including but not limited to mature pressure providing devices such as control motors. Preferably, the chuck pressure providing device in this embodiment is a tensile machine hydraulic press 111, which is used to provide hydraulic pressure for the tensile machine upper chuck 105 and the tensile machine lower chuck 108 of the tensile machine 1, so as to achieve the clamping and loosening of the chuck on the sample. It also includes a tensile machine base 101 set on the ground, and the two sides of the upper top cover are respectively provided with tensile machine columns 102, the middle part of the upper top cover is provided with a tensile machine lower clamp 107, and a tensile machine lower clamp 108 installed on the tensile machine lower clamp 107. A tensile machine moving beam 103 is horizontally installed between two tensile machine columns 102, and a tensile machine force sensor 104 and an upper clamp 106 of the tensile machine are arranged below it in sequence, as well as an upper chuck 105 of the tensile machine installed on the upper clamp 106 of the tensile machine. The upper chuck 105 of the tensile machine and the lower chuck 108 of the tensile machine provide sample clamping force for the upper clamp 106 of the tensile machine and the lower clamp 107 of the tensile machine under the hydraulic pressure provided by the hydraulic press 111 of the tensile machine, respectively, for clamping the sample when the sample is stretched. The function of the tensile machine column 102 is to provide support and transmit tensile force for the tensile machine moving beam 103, and the function of the tensile machine moving beam 103 is to provide tensile force for the tensile sample 8, that is, the tensile machine moving beam 10 drives the upper clamp 106 and the tensile machine chuck 105 installed thereon to move up and down along the column 102 to complete the stretching of the sample. The function of the tensile machine force sensor 104 is to detect the real-time tensile force value when the sample is stretched.

[0076] Preferably, the tensile machine 1 is also provided with a tensile machine lifting ring 109 fixed above the upper crossbeam 110 of the tensile machine, which is convenient for carrying, installing and debugging the tensile machine; and a tensile machine power switch 113 for controlling the power supply of the tensile machine and a tensile machine emergency stop switch 112 for stopping the tensile machine in an emergency.

[0077] Example 3

[0078] On the basis of Example 2, the sample identification component 202 includes a sample identification component base 2021, a sample identification component fiber laser 1 2022 and a sample identification component fiber laser 2 2023. The sample identification component base 2021 is arranged on the central control module operating platform 205, and its upper part is presented as a "V"-shaped groove. The sample identification component fiber laser 1 2022 and the sample identification component fiber laser 2 2023 are respectively arranged at both ends of the "V"-shaped groove, and the middle is used to place the tensile sample 8. The function of the sample identification component fiber laser 1 2022 and the sample identification component fiber laser 2 2023 is to etch a QR code on the end face of the tensile sample 8 after the test information of the tensile sample 8 is converted and entered by the system host computer 206. The two etched QR codes are the same, and their purpose is to prevent the two broken sample sections from being mixed according to the QR code identification after the sample is broken. The central control module operating platform 205 is also provided with,

[0079] Preferably, the central control module 2 further comprises a central control module operating platform 205, the sample identification component base 2021 is arranged on the central control module operating platform 205, and a human-machine interaction interface 201 is also arranged on the central control module operating platform 205. The human-machine interaction interface 201 can realize manual input and control when manual control is required, such as manually setting and selecting the detection scheme of the detection system, realizing the setting of parameters such as the stretching rate and the yield interval stretching rate specified by different detection methods, the operator inputs the sample information, and manually controls the actions of each module of the detection system. The detection system power switch is used for power-on and power-off control of the entire device.

[0080] Preferably, the central control module operation platform 205 is also provided with a sample information barcode scanner 203 and a detection system power switch 204. When the sample needs to be processed and shaped before stretching, the sample will generally be put into a sample bag during the processing and shaping, and the sample bag will be marked with sample information (commonly used as a barcode). The sample information barcode scanner 203 is used to quickly read the sample information barcode marked on the sample bag that circulates with the stretch sample 8, which is used to shorten the sample input time and is more conducive to improving the efficiency of sample information input in the system; the detection system power switch 204 is used to control the power supply of the detection system.

[0081] Example 4

[0082] On the basis of Example 3, the sample cache module 3 includes a cache slot 301, a transverse positioning slot 302, a sample identification reader 303, a cache slot mounting pad 304, a sample cache module mounting base 305 and a sample cache module supporting column 306. The sample cache module mounting base 305 is supported by four sample cache module supporting columns 306, which are arranged and fixed on the ground, and their function is to support, fix and position the sample cache module mounting base 305. The sample cache module mounting base 305 is also provided with a cache slot 301 and a transverse positioning slot 302. The cache slot 301 is a deep slot with an opening at the bottom and no cover on the top, and its slot body width matches the sample length of the tensile sample 8, and is slightly longer than the length of the tensile sample 8. Furthermore, the buffer slot 301 is at a certain angle to the ground as a whole, and the gap between the sample buffer module mounting base 305 and the buffer slot 301 is provided with a buffer slot mounting pad 304, and the function of the buffer slot mounting pad 304 is to improve the stability of the buffer slot 301. Furthermore, the bottom opening of the buffer slot 301 is connected to the transverse positioning slot 302, and the height of the bottom opening is slightly higher than the diameter of the tensile specimen 8. The purpose of setting the bottom opening height in this way is to facilitate the tensile specimen 8 to roll from the bottom opening to the transverse positioning slot 302 due to gravity. Further, the transverse positioning slot 302 is slightly at a certain inclination angle to the sample buffer module mounting base 305 as a whole, and the purpose is to facilitate the tensile specimen 8 to roll to the top of one side of the transverse positioning slot 302. The width of the transverse positioning slot 302 gradually narrows from the connection with the bottom of the buffer slot 301 to the top of the other side until it is equivalent to the length of the tensile specimen 8. The purpose of this setting is to improve the positioning accuracy when used in conjunction with the mechanical arm 6. A sample identification reader 303 is also provided on the side of the transverse positioning groove 302, and its function is to read the two-dimensional code identification 804 on the end face of the tensile specimen, which is used to bind various test data measured during the stretching process.

[0083] Example 5

[0084] On the basis of Example 4, the sample collection identification module 4 includes a sample collection device composed of a sample collection identification module mounting base 401 and a sample collection tube 403, a sample collection lower bottom box 404, a lower bottom box mounting frame moving rail 405, a moving rail motor 406, a lower bottom box mounting frame positioning sensor 1 407, a lower bottom box mounting frame positioning sensor 2 408, a lower bottom box mounting frame 409 and a moving rail frame 410. The moving rail frame 410 is two structural support rods of the same structure, and a plurality of lower bottom box mounting frame moving rails 405 are arranged between the support rods, and each lower bottom box mounting frame moving rail 405 is driven to rotate by a corresponding moving rail motor 406. Furthermore, a lower bottom box mounting frame positioning sensor 1 407 and a lower bottom box mounting frame positioning sensor 2 408 are also arranged at both ends of the moving rail frame 410. The functions of the lower bottom box installation frame positioning sensor 1 407 and the lower bottom box installation frame positioning sensor 2 408 are to sense the position of the lower bottom box installation frame 409 and transmit the sensing signal to the system PLC519, which controls the movement of the moving rail motor 406 to control the position of the lower bottom box installation frame 409. The lower bottom box installation frame 409 is provided with a sample collection lower bottom box 404, and the sample collection lower bottom box 404 is provided with a plurality of circular grooves, and the circular grooves are provided with a sample collection tube 403. Further, the sample collection tube 403 is a hollow plastic round tube, and its inner diameter is slightly larger than the diameter of the tensile specimen 8, which is used to pack the tensile specimen 8 after the tensile is completed. Since each sample collection lower bottom box 403 is provided with a number, each groove for installing the sample collection tube 403 is also provided with a corresponding number. After the sample is placed in the sample collection tube 403, the coordinate information of the position of the sample will be bound to the sample in the control system, and the system PLC519 can realize rapid retrieval when tracing the sample through the position coordinates of the bound sample.

[0085] Preferably, four sample collection identification module support columns 402 are arranged below the sample collection identification module installation base 401, and a movable rail frame 410 is arranged above. The sample collection identification module support columns 402 are arranged and fixed on the ground, and their function is to support, fix and position the sample collection identification module installation base 401.

[0086] Example 6

[0087] On the basis of Example 5, the sample size measurement module 5 includes a slide module motor 1 503, a slide module lead screw 1 504, a slide module moving base 1 505, an adapter block 1 506, a clamping jaw cylinder 1 507, a clamping jaw cylinder 2 510, a sample size measurement module force sensor 511, an adapter block 2 512, a slide module motor 2 513, a camera mounting base 514, a slide module moving base 2 515, a camera 516, a slide module lead screw 2 517, and a slide module mounting base 518. Further, the slide module lead screw 1 504 is driven to rotate by the slide module motor 1 503, driving the slide module moving base 1 505 located thereon to move forward and backward along the length direction of the slide module lead screw 1. The adapter block 1 506 is in an "L" shape, and the bottom is connected to the adapter block 1 506 on the sliding module moving base 1 505, and the side is connected to the driven rotating plate 522. The function of the driven rotating plate 522 is to facilitate the synchronous rotation of the clamping cylinder 1 507 connected thereto under the drive of the rotating motor 521. Further, the sliding module mounting base 518 is provided with a sliding module lead screw 2 517, and the sliding module lead screw 2 517 is driven to rotate by the sliding module motor 2 513, driving the sliding module moving base 2 515 located thereon to move forward and backward along the length direction of the sliding module lead screw 2 517. Further, the sliding module moving base 2 515 is provided with a camera mounting base 514, and the camera mounting base 514 is connected to a camera 516. Further, the camera 516 is a CCD visual recognition camera, and its function is to automatically focus on the tensile specimen 8 located below it, and is used to measure the tensile section diameter and necking diameter of the tensile specimen 8. Furthermore, a rotating motor 521 is provided on the adapter block 2 512, and the function of the rotating motor 521 is to drive the clamping cylinder 2 510 to rotate, so as to measure the diameter of the necking part at different angles. Furthermore, the diameters d1...dn of the necking part at multiple rotation angles can be measured, and the corrected equivalent circular necking diameter ds can be obtained after fitting by the system host computer 206; the cross-sectional area change rate calculated using the equivalent circular necking diameter ds is more accurate than the average value of the two necking diameters d1 and d2 measured at a rotation angle of 90° as specified in GB228.1, and can more accurately reflect the real cross-sectional area change rate of the material. Furthermore, a force sensor 511 of the sample size detection module is provided on the rotating motor 521, and the function of the force sensor 511 of the sample size detection module is to control the pressing force when the broken sample 1 508 and the broken sample 2 509 are spliced, so as to improve the accuracy and measurement repeatability during size detection. Furthermore, a second clamping cylinder 510 is provided on the force sensor 511 of the sample size detection module.

[0088] After the sample is stretched, it will break into two pieces, and the two pieces can only be clamped separately, and the two pieces can be spliced ​​into a whole through horizontal displacement. Since the sample will present an irregular random fracture after breaking, the clamping method provided in this embodiment can ensure that the sample does not rotate from the completion of stretching to the size measurement, and between the front clamping and the rear clamping. During measurement, the random irregular fractures can also be accurately spliced ​​together. During rotation, one end is active and the other end is driven. This structure is simple and control is not prone to errors.

[0089] Preferably, the sample size measurement module 5 also includes a sample size measurement module mounting base 501 and a sample size measurement module supporting column 502. There are four supporting columns 502 which are arranged on the mounting base 501. A slide module lead screw 1 504, a slide module mounting base 518 and a transfer block 2 512 are fixed above the mounting base 501 respectively.

[0090] Preferably, based on space considerations, the system PLC 519 can be installed below the sample size measurement module 5 through the system PLC mounting base 520. Of course, it can also be installed in other modules of the system without affecting the control and feedback functions of the system PLC 519.

[0091] Example 7

[0092] On the basis of Example 6, the robot 6 includes a robot base 601, a robot arm stem 602, a robot arm joint 603, a clamp adapter block 604, a tensile specimen clamp 605 and an extensometer 606. Further, the robot base 601 is fixedly installed on the ground, and the plurality of robot arm stems 602 and the corresponding robot arm joints 603 are connected in series, one end of the series connection is fixed on the robot base 601, and the other end is fixedly connected to the clamp adapter block 604. Further, the clamp connection block 604 is respectively provided with a tensile specimen clamp 605 and an extensometer 606, the tensile specimen clamp 605 is used to clamp the tensile specimen 8, and the extensometer 606 is used to assist in completing the yield strength test of the tensile specimen 8.

[0093] Example 8

[0094] Preferably, an automated material room temperature tensile property testing system further comprises a guardrail 7, wherein the guardrail 7 comprises a guardrail upright pole 701, a guardrail protection net 702 and a detection system status light 703. Further, the guardrail upright pole 701 is fixed on the ground, and a guardrail protection net 702 is provided between every two guardrail upright poles 701. The function of the guardrail 7 is to improve the safety of the operator when the detection system is working. Further, a detection system status light 703 is also provided on the guardrail 7. The function of the detection system status light 703 is to facilitate the operator to intuitively observe the working status of the detection system. The red light represents stopping the work, the yellow light represents standby work, and the green light represents working.

[0095] Example 9

[0096] An automated material room temperature tensile properties testing method comprises the following steps:

[0097] S1. Import the sample information of the tensile test specimen into the central control module and mark it;

[0098] S2, placing the marked tensile specimen into a sample buffer module for storage;

[0099] S3, initializing the detection system in the central control module control system, and each device and module component moves to the initialization position;

[0100] S4, the central control module starts the detection system;

[0101] S5. Controlled by the system PLC, the robotic arm grabs the tensile specimen from the preset position of the specimen buffer module and reads the specimen information;

[0102] S6. Under the control of the system PLC, the mechanical arm clamps the tensile specimen onto the tensile testing machine, and the tensile testing machine chuck clamps the tensile specimen, and the specimen is stretched according to the strain rate during the yield period; after reaching the yield point, the PLC is fed back and controlled by the PLC, and the tensile force value at the yield point is uploaded to the system host computer by the PLC, and the host computer calculates the yield strength of the specimen based on the uploaded data;

[0103] S7, controlled by PLC, the tensile machine stretches the sample at a preset strain rate for testing tensile strength until the sample breaks, and uploads the breaking force value to the system host computer, which calculates the tensile strength of the sample based on the uploaded data;

[0104] S8, under the feedback and control of PLC, the robot arm clamps the two halves of the broken sample to the sample size measuring module respectively, and the clamping claw cylinder of the sample size measuring module clamps them respectively;

[0105] S9, controlled by the system PLC, the sample size measurement module detects the extension length and neck diameter of the sample after fracture, and uploads the detected data to the system host computer, which calculates the elongation and section shrinkage rate based on the uploaded data;

[0106] S10. Under the control of the system PLC, the robotic arm clamps the two halves of the sample into the sample collection module respectively.

[0107] Example 10

[0108] An automated material room temperature tensile property testing method comprises the following steps:

[0109] S1. Import the test information of the tensile specimen into the central control module control system and mark it:

[0110] For example, in the manual operation mode, the operator places the tensile specimen 8 in the specimen bag on the specimen identification component base 2021. Since the information of the tensile specimen 8 has been recorded on the specimen bag, the operator then enters the information of the tensile specimen 8 on the specimen bag in the human-machine interaction interface 201, or directly uses the sample information barcode scanner 203 to scan the tensile specimen information barcode on the specimen bag. The sample information at least includes: a. material brand; b. material batch number; c. commission date; d. commissioning unit; e. material status; f. diameter of the tensile specimen test section 802;

[0111] For example, in the fully automatic mode, the system PLC sends instructions to the robotic arm, or other automated devices at the front end of the detection system execute it, and the tensile specimen 8 in the specimen bag is placed on the specimen identification component base 2021, and the sample information scanner 203 scans the tensile specimen information barcode on the specimen bag and enters it into the central control module.

[0112] The operator clicks the "etch" button on the human-machine interface 201 or the system PLC issues an etching command, and the sample identification component fiber laser 1 2022 and the sample identification component fiber laser 2 2023 respectively etch the two ends of the tensile sample clamping sections 801 of the tensile sample 8 on the end surface of the tensile sample 8.

[0113] S2. Put the marked tensile specimen into the sample buffer module for storage:

[0114] In the manual operation mode, the operator places the etched tensile specimen 8 into the buffer slot 301. In the fully automatic mode, the central control module 2 sends an operation instruction to the robot arm 6 to place the etched tensile specimen 8 into the buffer slot 301, or other automated devices execute the operation instruction of the central control module to complete this operation. Since the stretching process rhythm of the tensile specimen 8 is much longer than the QR code etching rhythm of the tensile specimen 8, the number of tensile specimens 8 in the buffer slot 301 will gradually increase as the operator performs the QR code etching operation on the end face of the tensile specimen 8; because the etching is fast and the tensile test is slow, a buffer slot needs to be set up to facilitate manual operation. A large number of samples can be prepared in a short time and placed in the buffer slot. Manual intervention can be undisturbed for a long time, and the samples in the buffer slot can be gradually stretched, which can greatly reduce the unit's manual time consumption. S3. Initialize the detection system in the central control module:

[0115] Controlled by the system host computer 206, each module component of the system is initialized, including: a. The upper clamp 106 and the lower clamp 107 of the tensile testing machine are in the open position; b. The moving beam 103 of the tensile testing machine drives the upper clamp 106 of the tensile testing machine away from the lower furniture 107 of the tensile testing machine, for example, the distance between the upper and lower clamps can be set to 300mm; c. The gripper cylinder 1 507 and the gripper cylinder 2 510 are away from each other, for example, the distance between the two can be set to 300mm; d. The camera 516 is away from the gripper cylinder 1 507 in a direction perpendicular to the ground, for example, the distance between the two can be set to 500mm; e. The lower bottom box mounting frame 409 moves to the side close to the robotic arm 6.

[0116] S4. After the system initialization is completed, the central control module controls and starts the detection system to perform the following detection steps.

[0117] S5. Controlled by the system PLC, the robotic arm grabs the tensile specimen from the preset position of the specimen buffer module and reads the QR code on the end face of the specimen in the barcode reader of the specimen buffer module;

[0118] Under the control of the system PLC, the tensile specimen clamp 605 of the robot arm 6 clamps a tensile specimen 8 in the transverse positioning groove 302 at the position of the tensile specimen test section 02, and aligns one of the tensile specimen end face QR code labels 804 of the tensile specimen 8 with the sample identification reader 303; the sample identification reader 303 uploads the read sample information of the tensile specimen 8 to the system host computer 206, and the data detected in the subsequent steps are marked as the data of the tensile specimen 8 after being uploaded to the system host computer 206.

[0119] S6. Yield strength test steps of the detection system:

[0120] Controlled by the system PLC, the mechanical arm 6 clamps the tensile specimen 8 to the middle of the upper fixture 106 of the tensile testing machine; the upper fixture 106 of the tensile testing machine is driven by the hydraulic chuck 105 on the tensile testing machine to clamp the tensile specimen clamping section 801 at one end of the tensile specimen 8; controlled by the system PLC, the tensile specimen clamping claw 605 of the mechanical arm 6 releases the tensile specimen 8, and the tensile testing machine moving beam 103 moves downward until the tensile specimen clamping section 801 at the other end of the tensile specimen 8 is located in the middle of the lower fixture 107 of the tensile testing machine, and is driven by the lower hydraulic chuck 108 of the tensile testing machine to clamp the tensile specimen clamping section 801 in the middle of the lower fixture 107 of the tensile testing machine. The sample clamping section 801 of the tensile sample 8 is moved; controlled by the system PLC, the extensometer 606 of the robot arm 6 approaches the tensile sample test section 802 of the tensile sample 8 until it touches the tensile sample 8, and the tensile testing machine 1 stretches the sample according to the strain rate during yield, and the strain rate during yield can be set to 1mm / min; the system PLC feedback and control, when the tensile sample 8 is stretched to the yield point, the robot arm 6 drives the extensometer 606 away from the tensile sample 8; the system PLC uploads the measured yield point tensile force F1 to the system host computer 206; the yield strength detection step of the sample is completed.

[0121] S7, the detection system performs tensile strength detection steps:

[0122] Controlled by the system PLC, the tensile testing machine 1 continues to stretch the sample at a preset tensile strength detection strain rate until the tensile sample 8 breaks. The tensile strength detection strain rate can be set to 5 mm / min. The system PLC uploads the measured breaking force F2 to the system host computer 206.

[0123] S8. The robotic arm clamps the two sections of the sample after the tensile fracture to the sample size test module respectively:

[0124] Controlled by the system PLC, the tensile specimen gripper 605 of the robot arm 6 grips the connection R between the tensile specimen gripping section 801 and the tensile specimen test section 802 of the upper tensile specimen 805. The purpose of gripping here is to improve the gripping stability of the upper tensile specimen 805, because after the tensile specimen 8 is broken, one half of the test section may be shorter; controlled by the system PLC, the clamp 106 on the tensile testing machine is released; controlled by the system PLC, the robot arm 6 moves the upper tensile specimen to the middle of the gripper cylinder 507, and the gripper cylinder 507 clamps the tensile specimen gripping section 801 of the upper tensile specimen 805, and then the robot arm 6 releases the upper tensile specimen 805; Under the control of system PLC, the tensile specimen clamp 605 of the robot arm 6 clamps the connection R between the tensile specimen clamping section 801 and the tensile specimen test section 802 of the lower tensile specimen 806. The purpose of clamping here is to improve the clamping stability of the lower tensile specimen 806, because after the tensile specimen 8 is broken, one half of the test section may be shorter; under the control of system PLC, the clamp 107 on the tensile testing machine is released; under the control of system PLC, the robot arm 6 moves the upper tensile specimen 805 to the middle of the clamp cylinder 2 510, and the clamp cylinder 2 510 clamps the tensile specimen clamping section 801 of the lower tensile specimen 806, and then the robot arm 6 releases the lower tensile specimen 806.

[0125] After the sample is stretched, it breaks into two parts, and the two parts can only be clamped separately. The operation method of this embodiment is fed back by the tensile machine PLC and controlled by the system PLC. The robotic arm transfers the two halves of the broken sample to the clamping claw cylinder through horizontal displacement and clamps them separately. Since the sample will present irregular random fractures after breaking, the clamping method provided in this embodiment can ensure that the sample does not rotate from the completion of stretching to the size measurement, and between the front clamping and the rear clamping. During measurement, random irregular fractures can also be accurately spliced ​​together. When the sample needs to be rotated for testing in the next step, one end is active and the other end is driven. The structure is simple and the control is not prone to errors.

[0126] S9. The sample size measurement module of the detection system performs the following steps to detect the extension length and necking diameter of the sample after fracture:

[0127] Controlled by the system PLC, the sliding table module mobile base 1 505 drives the upper tensile specimen 805 to approach the lower tensile specimen 806 until the two are close together. The close force value is controlled by the specimen size measurement module force value sensor 511, which can be set to 50N; controlled by the system PLC, the camera is driven by the sliding table module mobile base 2 515 to focus and measure the size of the tensile specimen 8 after close contact, including: a. The distance L1 between the original gauge lengths 803 of the two tensile specimens; b. Driven by the rotary motor 521, the diameter of the necking part is measured every 30° rotation, and 12 necking diameters d1, d2, d3, d4, d5, d6, d7, d8, d9, d10, d11 and d12 are measured after one rotation. The camera uploads the measured data to the system PLC519, and the system PLC uploads the data to the system host computer 206.

[0128] S10. The robotic arm clamps the two halves of the sample into the sample collection module respectively:

[0129] Controlled by the system PLC, the sliding table module moves the base 1 505 to drive the upper tensile specimen 805 and the lower tensile specimen 806 away from each other until the distance between the clamp cylinder 1 507 and the clamp cylinder 2 510 is 300 mm; controlled by the system PLC519, the tensile specimen clamp 605 of the robot arm 6 clamps the upper tensile specimen 805 at the connection R between the tensile specimen clamping section 801 and the tensile specimen test section 802, the clamp cylinder 1 507 is released, and the robot arm 6 places the upper tensile specimen 805 in one of the sample collection tubes 403 of the sample collection bottom box 404. Controlled by the system PLC519, the tensile sample clamping claw 605 of the robot arm 6 clamps the lower half tensile sample 806 at the connection R between the tensile sample clamping section 801 and the tensile sample test section 802, the clamping claw cylinder 2 510 is released, and the robot arm 6 places the lower half tensile sample 806 in the same sample collection tube 403 of the sample collection bottom box 404, and the system PLC519 uploads the coordinate position data of this tube to the system host computer 206;

[0130] After the detection is completed, the system host computer 206 processes the received detection data and completes the test of the tensile specimen 8; by repeating other steps after initialization, the fully automatic detection of multiple tensile specimens can be completed.

[0131] The room temperature tensile property detection method and detection system of the material provided by the present invention have high automation and integration, and are all completed automatically by the machine from the sample identification link to the completion of the detection and identification collection. In addition, the detection method and detection system provided by the present invention are controlled by the system PLC, the force value is fed back, the sample fracture extension length and necking diameter are measured by the sample size measurement module, and the upper computer is calculated, and the sample yield strength, tensile strength, elongation and cross-sectional shrinkage can be fully automatically detected; due to the realization of fully automatic machine detection, manual participation is greatly reduced, that is, the low efficiency and error rate caused by manual operation are eliminated, continuous repeated detection is achieved, and the detection accuracy is improved; and through the multiple tensile specimens stored in the buffer slot, tensile detection, data collection and result calculation are performed piece by piece under the system mechanism and control mode, there is no redundant beat to waste detection time in the middle, and there is no detection process jammed under manual participation, until all the samples to be detected in the buffer slot are detected, the detection efficiency is high, and the application prospect is good.

[0132] The above-mentioned implementation cases are only preferred implementation methods of the present invention. The implementation methods of the present invention are not limited to the above-mentioned implementation cases. It should be understood that those skilled in the art can design many other modifications and implementation methods, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. An automated material room temperature tensile properties testing system, characterized by: It comprises a tensile machine (1), a mechanical arm (6), a central control module (2), a sample buffer module (3), a sample size measurement module (5) and a sample collection identification module (4); wherein: The central control module (2) comprises a control system (201), a system host computer (206), and a sample identification component (202); the control system (201) records sample detection information and controls the sample identification component (202) to identify the sample; the control system (201) is connected to the tensile machine (1), the sample buffer module (3), the mechanical arm (6), the sample size measurement module (5), and the sample collection identification module (4) to exchange data and issue operation instructions; The tensile machine (1) comprises an upper chuck (105) and a lower chuck (108) of the tensile machine which are arranged relatively to each other and can respectively clamp two ends of a sample for stretching, and a chuck pressure providing device for controlling the clamping pressure of the upper chuck (105) and the lower chuck (108) of the tensile machine; The sample buffer module (3) comprises a sample storage device and a sample identification code reader (303) arranged at the outlet of the sample storage device; The mechanical arm (6) comprises a mechanical arm trunk (602) and a plurality of mechanical arm joints (603) connected in series therewith, as well as a clamping claw (605) and an extensometer (606) mounted on the mechanical arm (6); The sample size measurement module (5) comprises a first rotatable clamping jaw cylinder (507) and a second clamping jaw cylinder (510) which are arranged opposite to each other and can respectively clamp two ends of the sample, and a camera device arranged perpendicular to the clamping jaws; The sample collection identification module (4) comprises a sample collection device, a sample moving device and a sample positioning device. The sample moving device is arranged at the lower part of the sample collection device, and the sample positioning device is arranged on the sample moving device.

2. The automated material room temperature tensile properties testing system according to claim 1, characterized in that: The control system (201) realizes system control through a system PLC (519); the sample identification component (202) comprises a sample identification component base (2021) for placing a tensile sample (8), and a sample identification component optical fiber laser 1 (2022) and a sample identification component optical fiber laser 2 (2023) arranged at two ends of the sample identification component base (2021) and used for etching a tensile sample end face two-dimensional code mark (804) on the end face of the tensile sample (8).

3. The automated material room temperature tensile properties testing system according to claim 2, characterized in that: The central control module further comprises a central control module operating platform (205), the sample identification component base (2021) is arranged on the central control module operating platform (205), and a human-machine interaction interface is also arranged on the central control module operating platform (205).

4. The automated material room temperature tensile properties testing system according to claim 1, characterized in that: The clamping head pressure providing device of the tensile testing machine (1) is a tensile testing machine hydraulic press (111), and the tensile testing machine (1) also includes a tensile testing machine base (101), and the two sides of the upper top cover are respectively provided with tensile testing machine columns (102), and the middle part of the upper top cover is provided with a tensile testing machine lower clamp (107), and a tensile testing machine lower clamp (108) installed on the tensile testing machine lower clamp (107); a tensile testing machine moving crossbeam (108) is also horizontally arranged between the tensile testing machine columns (102). 103), a tensile machine force sensor (104) and a tensile machine upper clamp (106) are arranged in sequence below the tensile machine moving crossbeam (103), and a tensile machine upper chuck (105) installed on the tensile machine upper clamp (106), the tensile machine moving crossbeam (103) drives the tensile machine upper clamp (106) and the tensile machine upper chuck (105) installed thereon to move up and down along the column (102), realize relative movement with the tensile machine lower chuck, and complete the stretching of the sample.

5. An automated material room temperature tensile properties testing system according to any one of claims 1 to 4, characterized in that: The sample storage device of the sample cache module (3) comprises a cache slot (301), a transverse positioning slot (302), and a sample identification code reader (303); the cache slot (301) is a deep slot with an opening at the bottom, which forms a certain angle with the ground as a whole; the bottom opening of the cache slot (301) is connected to the transverse positioning slot (302); and the side of the transverse positioning slot (302) is also provided with a sample identification code reader (303).

6. The automated room temperature tensile properties testing system of claim 5, characterized in that: The sample collection device of the sample collection identification module (1) comprises a sample collection lower bottom box (404) and an internal sample collection tube (403); the sample moving device is arranged at the lower part of the sample collection lower bottom box (404); and the sample positioning device is arranged on the sample moving device; each collection lower bottom box (404) and the bottom of the sample collection tube (403) are provided with corresponding numbers; the sample collection lower bottom box (404) is provided with a plurality of grooves, and the sample collection tube (403) is installed in the grooves; the sample moving device comprises a lower bottom box installation frame (409) arranged at the bottom of the sample collection lower bottom box (404); A movable rail (405), a movable rail motor (406), and a movable rail frame (410); a lower bottom box installation frame (409) is placed on the movable rail (405); there are a plurality of movable rails (405) which are erected between the movable rail frame (410) composed of two structural support rods, and each lower bottom box installation frame movable rail (405) is driven to rotate by a corresponding movable rail motor (406); the sample positioning device comprises a lower bottom box installation frame positioning sensor 1 (407) and a lower bottom box installation frame positioning sensor 2 (408) which are arranged at both ends of the movable rail frame (410) and are used to sense the position of the lower bottom box installation frame (409).

7. The automated material room temperature tensile properties testing system according to claim 5, characterized in that: The sample size measurement module (5) further comprises a slide module motor 1 (503), a slide module lead screw 1 (504), a slide module movable base 1 (505), an adapter block 1 (506), a driven rotating plate (522), an adapter block 2 (512), a slide module motor 2 (513), a camera mounting base (514), a slide module movable base 2 (515), a slide module lead screw 2 (517), and a slide module mounting base (518); in: The slide module mounting base (518) is vertically mounted with a slide module lead screw 2 (517) and a slide module motor 2 (513); the slide module movable base 2 (515) is mounted on the slide module lead screw 2 (517); the slide module lead screw 2 (517) is driven to rotate by the slide module motor 2 (513), driving the slide module movable base 2 (515) located thereon to move vertically along the slide module lead screw 2 (517); the slide module movable base 2 (515) is provided with a camera mounting base (514); the camera (516) is mounted on the camera mounting base (514), and the camera lens is aligned with the clamping position of the tensile specimen below; A slide module lead screw 1 (504) is installed on one side of the slide module lead screw 2 (517) and in a direction perpendicular to the slide module lead screw 2 (517); the slide module movable base 1 (505) is installed on the slide module lead screw 1 (504); the bottom of the adapter block 1 (506) is connected to the slide module movable base 1 (505), and the side is connected to the driven rotating plate (522); the clamping cylinder 1 (507) is installed on the driven rotating plate (522); the slide module lead screw 1 (504) is driven by the slide module motor 1 (503), driving the slide module movable base 1 (505) located thereon to move horizontally along the slide module lead screw 1 (504); A second adapter block (512) is installed on the other side of the second screw rod (517) of the slide module. A rotating motor (521) and a second clamping cylinder (510) driven to rotate by the rotating motor (521) are installed on the side of the second adapter block (512) facing the first clamping cylinder (507). The first clamping cylinder (507) is opposite to the second clamping cylinder (510).

8. The automated room temperature tensile properties testing system of claim 7, characterized in that: The mechanical arm (6) further comprises a mechanical arm base (601) and a clamping jaw adapter block (604); the mechanical arm base (601) is fixedly installed; the plurality of mechanical arm trunks (602) and corresponding mechanical arm joints (603) are connected in series; one end of the series-connected mechanical arm trunks (602) and corresponding mechanical arm joints (603) is fixed on the mechanical arm base (601), and the other end is connected to the clamping jaw adapter block (604); the tensile specimen clamping jaw (605) and the extensometer (606) are installed on the clamping jaw adapter block (604) and the clamping jaw connection block (604).

9. An automated material room temperature tensile property testing method, characterized in that: The following steps are involved: S1. Import the sample information of the tensile test specimen and mark it; S2, caching and storing the marked tensile specimens; S3, initializing the detection system, and each device and module component moves to the initialization position; S4, start the detection system; S5. Controlled by the system PLC, the robot arm grabs the tensile specimen from the preset position of the cache storage specimen and reads the specimen information; S6. Controlled by the system PLC, the mechanical arm clamps the tensile specimen onto the tensile testing machine, and the chucks of the tensile testing machine clamp the two ends of the tensile specimen respectively, and the specimen is stretched according to the strain rate during the yield period; the system PLC feedbacks and controls, and after reaching the yield point, the system PLC uploads the yield point tensile force value to the system host computer, and the host computer calculates the yield strength of the specimen based on the uploaded data; S7, controlled by the system PLC, the tensile machine stretches the sample at a preset strain rate for testing tensile strength until the sample breaks, and uploads the breaking force value to the system host computer, which calculates the tensile strength of the sample based on the uploaded data; S8. With the feedback and control of the system PLC, the robot arm clamps the two halves of the broken sample to the sample size measurement module respectively, and the clamping claw cylinder of the sample size measurement module clamps them respectively; S9, controlled by the system PLC, the sample size measurement module detects the extension length and neck diameter of the sample after fracture, and uploads the detected data to the system host computer, which calculates the elongation and section shrinkage rate based on the uploaded data; S10. Under the control of the system PLC, the robotic arm clamps the two halves of the sample into the sample collection module respectively.

10. An automated material room temperature tensile property testing method as claimed in claim 9, characterized in that: In step S9, the fractured sample is rotated to different angles, and the diameters of the necking parts at different angles are measured. The diameters of the necking parts d1...dn at multiple rotation angles are measured and fitted by the system host computer 206 to obtain the corrected equivalent circular necking diameter ds.

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