Tensile strength detection machine for shaft workpieces

Abstract

The invention discloses a shaft workpiece tensile strength detection machine, which comprises a test base, two groups of load sensors, a first clamp, a rack, a control device, a driving module, a detection mechanism and a second clamp, and is characterized in that the two groups of load sensors are respectively assembled at the opposite ends of the detection mechanism and the test base, and the rack is assembled on the upper end surface of the test base. When a shaft workpiece is fixedly detected, the problem that a traditional testing device can only pull the workpiece at a vertical angle so that the anti-pulling performance of the workpiece cannot be completely detected is avoided, the stability of the workpiece during detection is improved, and the influence on detection data caused by position sliding of the workpiece during detection is avoided; the automatic driving trapezoidal block can be inserted into the clamping groove to prevent the second clamp from returning, when the lifting hollow table returns, limitation on the clamping groove and the track block is canceled, the track block can automatically return at the moment, and the whole automation of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of tensile strength testing of shaft-type workpieces, and in particular to a tensile strength testing machine for shaft-type workpieces. Background Technology

[0002] A tensile strength tester is a machine used to test the tensile strength of an object. It can perform tensile strength tests on rubber, plastics, films, textiles, fibers, nanomaterials, polymer materials, composite materials, packaging bags, paper, wires and cables, fiber optic cables, safety belts, seat belts, and leather belts, etc. It adopts an electromechanical integrated design and mainly consists of a force sensor, transmitter, microprocessor, load drive mechanism, computer, and color inkjet printer.

[0003] Existing tensile strength testing machines typically use internal clamps to hold the workpiece and then a lifting system to move it, thereby testing the tensile strength of the workpiece. However, existing tensile strength testing machines can only test the vertical tensile force of the workpiece. Some shaft-type workpieces are subjected to tension at different angles during operation, which means that existing devices cannot fully simulate the working environment of shaft-type workpieces, thus affecting the tensile strength test. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a tensile strength testing machine for shaft-type workpieces, thereby solving the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tensile strength testing machine for shaft-type workpieces, comprising a test base, load sensors, a first fixture, a frame, a control device, a drive module, a testing mechanism, and a second fixture. Two sets of load sensors are respectively mounted on opposite ends of the testing mechanism and the test base. The opposite ends of the two sets of load sensors are respectively connected to the first fixture and the second fixture. The frame is mounted on the upper surface of the test base, and the drive module is mounted inside the frame. The testing mechanism is mounted between the two drive modules. The testing mechanism includes a lifting hollow platform, which is connected to the output end of the drive module. A KK module is welded inside the lifting hollow platform, and the output end of the KK module is connected to a universal ball joint module. The output of the universal ball joint module... The end is connected to the load sensor near the detection mechanism. Both ends of the inner cavity of the lifting hollow platform are connected to the track groove block. The track block is slidably connected to the inside of the track groove block and is connected to the universal ball joint module. The upper end face of the track block has a slot. The right side of the upper end face of the track groove block has short grooves evenly distributed. Both ends of the inner cavity of the lifting hollow platform are slidably connected to the pressure plate. The bottom of the pressure plate is evenly equipped with a sliding sleeve. The sliding sleeve is slidably connected to the trapezoidal block. The sliding sleeve and the trapezoidal block are connected to the limit spring. Both sides of the top of the pressure plate are connected to the telescopic spring column, and the telescopic spring column is inserted into the top of the inner cavity of the lifting hollow platform. Both sides of the outer cavity of the track groove block are connected to the short plate. Both ends of the inner side of the frame are connected to the drive plate, and the drive plate is located directly above the short plate.

[0006] Preferably, the test base has foot pads evenly distributed at the four corners of its bottom, and the bottom of the foot pads is fitted with rubber pads. The foot pads can support the test base and improve its stability during operation, transportation and storage. The rubber pads can improve the adhesion between the foot pads and the ground and prevent the device from shaking during use, thereby avoiding the risk of tipping over.

[0007] Preferably, control modules are installed on both sides of the front of the test base, and the control modules include start / stop switches and emergency switches. The control modules are connected to the control equipment through wiring. The control modules can start, stop and power off the mechanical structure inside the test base, improve the overall safety performance of the device and avoid accidents during the use of the device.

[0008] Preferably, vertical grooves are evenly provided on both sides of the lifting hollow platform, and the vertical grooves are slidably connected to the short plate. The vertical grooves facilitate the drive plate to transmit power to the rising short plate, guide the short plate and the pressure plate to linear motion, and facilitate the connection and assembly of the short plate with the pressure plate during processing.

[0009] Preferably, the short groove and the sliding sleeve are respectively arranged on the right side of the opposite end of the track block and the pressure plate, and the left side of the short groove and the opposite end of the track block is polished. The short groove and the sliding sleeve are designed with only one side, so that when the track block slides to the right, it can be self-locked by the internal device. When the track block moves to the left, it will not be locked by the device, thereby realizing the free adjustment of the position of the device.

[0010] Preferably, the telescopic spring column includes a hollow column and a sliding rod, with the hollow column and the sliding rod slidably connected. The hollow column and the sliding rod are respectively connected to the pressure plate and the lifting hollow platform, and a spring is connected between the hollow column and the sliding rod. The telescopic spring column is a common spring telescopic arm in the prior art, which can guide the sliding sleeve and the lifting hollow platform, and at the same time pull the pressure plate to return to its original position after the drive plate stops resisting the short plate, thereby improving the overall automation of the device.

[0011] Preferably, the test base includes a main frame, and a display module is assembled inside the main frame. The main frame also houses a control system, a displacement measurement module, and calibration standard components. The main frame can assemble the display module, the control system, and the displacement measurement module, which can perform tensile strength testing on the workpiece.

[0012] Preferably, a protective door is installed on the inner left side of the frame, and the protective door includes a glass door. The glass door is connected to the frame by a hinge. The protective door can close the frame to prevent the workpiece from breaking during testing and causing fragments to fly and cause splash injuries to the surrounding personnel, thereby improving the overall safety performance of the device.

[0013] Preferably, the first clamp and the second clamp are respectively provided with locking pins on their exteriors, and the locking pins are covered with anti-slip sleeves. The locking pins can be inserted into the interior of the first clamp and the second clamp, thereby locking the first clamp and the second clamp, improving the stability of the first clamp and the second clamp after clamping the workpiece, and preventing the workpiece from detaching from the device, thus causing the detection failure.

[0014] Preferably, the right side of the trapezoidal block is designed with an inclined surface, and the trapezoidal block is inserted into the short slot. The inclined design of the trapezoidal block facilitates the sliding of the track block on the right side, preventing the track block from returning to its original position, thereby avoiding any impact on the device's detection data.

[0015] In summary, compared with the prior art, the present invention provides a tensile strength testing machine for shaft-type workpieces, which has the following beneficial effects:

[0016] 1. When performing fixed testing on shaft-type workpieces, the addition of the KK module, universal ball joint module, and second fixture allows the workpiece to be pulled to perform testing at different angles. This simulates the tensile state of shaft-type workpieces during operation, avoiding the limitations of traditional testing devices that can only pull the workpiece at a vertical angle, thus failing to fully test the tensile resistance of the workpiece.

[0017] 2. When the KK module drives the second fixture to move, the added track groove block, track block, slot, pressure plate, short groove, sliding sleeve and trapezoidal block can lock the position of the workpiece, improve the stability of the workpiece during inspection, and prevent the workpiece from sliding during inspection, thereby affecting the inspection data;

[0018] 3. When inspecting shaft-type workpieces, the added drive plate and short plate allow the automatic drive trapezoidal block to insert into the slot when the lifting hollow platform moves, preventing the second fixture from returning to its original position. When the lifting hollow platform returns to its original position, the restriction on the slot and track block is lifted, and the track block can then automatically return to its original position, improving the overall automation of the device. Attached Figure Description

[0019] Figure 1 This is an external schematic diagram of the present invention.

[0020] Figure 2 This is a front view of the present invention.

[0021] Figure 3 This is an external schematic diagram of the testing mechanism of the present invention.

[0022] Figure 4 This is a partial cross-sectional view of the testing mechanism of the present invention.

[0023] Figure 5 This is a partial cross-sectional view of the track groove block of the present invention.

[0024] Figure 6 This is a partial cross-sectional view of the sliding sleeve of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Test base; 11. Control module; 12. Foot pad; 2. Load sensor; 3. First clamp; 4. Locking pin; 5. Frame; 51. Protective door; 6. Control equipment; 7. Drive module; 8. Detection mechanism; 81. Lifting hollow platform; 82. KK module; 83. Track groove block; 84. Track block; 85. Slot; 86. Pressure plate; 87. Short groove; 88. Sliding sleeve; 89. Trapezoidal block; 810. Limiting spring; 811. Telescopic spring column; 812. Short plate; 813. Drive plate; 814. Vertical groove; 9. Second clamp; 91. Universal ball hinge module. Detailed Implementation

[0026] This invention provides a technical solution; please refer to [link / reference]. Figure 1 and Figure 2 A tensile strength testing machine for shaft-type workpieces includes a test base 1, a load sensor 2, a first fixture 3, a frame 5, a control device 6, a drive module 7, a testing mechanism 8, and a second fixture 9. There are two sets of load sensors 2, which are respectively mounted on opposite ends of the testing mechanism 8 and the test base 1. The opposite ends of the two sets of load sensors 2 are respectively connected to the first fixture 3 and the second fixture 9. The frame 5 is mounted on the upper end face of the test base 1, and the drive module 7 is mounted in the inner cavity of the frame 5. The testing mechanism 8 is mounted between the two drive modules 7.

[0027] The test base 1 displays the entire test process, curves, and automatically transmits test settings and data via a microcomputer. Users can modify test reports and output standard reports according to their requirements. Through the overlay analysis of group test curves, quality control parameters can be accurately determined. Multiple data query functions allow managers to clearly grasp the development and changes in quality control. Meanwhile, the internal software enables testers to quantitatively grasp the status parameters of key points in the application of test materials, accurately adjust processes, and control production. It also provides users with the option to set the required test standards, covering GB, ASTM, DIN, JIS, and BS standards.

[0028] Please see Figure 1 and Figure 2 The test base 1 is a fully open user-editable report platform, allowing testers to choose their preferred report format. The test program has added a built-in EXCEL report editing function, expanding the previous single professional report format.

[0029] The control device 6 allows users to set all sample data, input data once and reuse it permanently, and modify the formulas themselves to improve the fit of the test data.

[0030] Load sensor 2 can display length and force units, and the display digits adopt a dynamic interchange method. Force units are T, KG, N, KN, G, lb, and deformation units are MM, CM, INCH.

[0031] The load sensor 2 can work with the test base 1 to automatically optimize the graph scale using AutoScale, ensuring the graph is displayed at the optimal size. It also allows for real-time dynamic switching of graphs during testing. It features load-displacement, load-time, displacement-time, stress-strain load-2-point extension graphs, and multi-curve comparisons. The final test results can be output in EXCEL format.

[0032] The test can be automatically saved or manually saved upon completion. After the test, the system automatically calculates the maximum force, upper and lower yield strength, hysteresis loop method, successive approximation method, non-proportional extension strength, tensile strength, compressive strength, elongation strength at any point under constant load, elastic modulus, elongation rate, maximum, minimum, and average values ​​of the peeling interval, net energy, return energy, total energy, flexural modulus, displacement at breakpoint with load percentage, displacement at breakpoint with load percentage, etc. Data backup: Test data can be saved to any hard drive partition.

[0033] Please see Figure 1 and Figure 2 The test base 1 is model CRS-UTM200MA, with a load accuracy of ±1%. The drive module 7 is a common lifting device in the prior art, with a maximum stroke of 800mm. The first clamp 3 is a common clamp in the prior art, which can fix and clamp the workpiece. The control device 6 can assemble the drive module 7. At the same time, the device is equipped with an overload emergency stop device, an upper and lower stroke limit device, and an automatic power-off system for leakage. The control method is: M: microcomputer control, C: fully automatic computer control.

[0034] Power System: A: Professional AC motor from Taiwan, China; S: Panasonic AC servo motor from Japan.

[0035] Speed ​​control: 5-100mm / min segmented control, stepless speed regulation 0.1-500mm / min stepless speed regulation; transmission system: Taiwan backlash-free T-type ball screw, Taiwan ABBA precision ball screw; power supply: 220V, 15A.

[0036] The test base 1 is the main structure of the equipment, usually made of high-strength steel or other sturdy materials to ensure that it can stably support the sample and withstand the applied tensile force during the test. At the same time, the test base 1 adopts a vertical design to improve the overall stability of the device. The drive module is responsible for providing the force required to stretch the sample, including components such as motor, reducer, and drive shaft. The first clamp 3 and the second clamp 9 are connected to the load sensor 2 by a hinge, which allows for small-amplitude rotation during use. Meanwhile, the first clamp 3 and the second clamp 9 can withstand the maximum tensile force during the test and ensure that the sample will not slip or fall off during the stretching process.

[0037] Please see Figure 3 , Figure 4 , Figure 5 and Figure 6The detection mechanism 8 includes a lifting hollow platform 81, which is connected to the output end of the drive module 7. A kk module 82 is welded inside the lifting hollow platform 81. The output end of the kk module 82 is connected to a universal ball hinge module 91. The output end of the universal ball hinge module 91 is connected to a load sensor 2 near one end of the detection mechanism 8. Track groove blocks 83 are connected to both ends of the inner cavity of the lifting hollow platform 81. Track blocks 84 are slidably connected inside the track groove blocks 83, and the track blocks 84 are connected to the universal ball hinge module 91.

[0038] The upper end face of the track block 84 is provided with a slot 85, and the upper end face of the track slot block 83 is provided with short slots 87 evenly on the right side. The inner ends of the lifting hollow platform 81 are slidably connected with pressure plates 86, and the bottom of the pressure plates 86 is evenly equipped with sliding sleeves 88. The inner end of the sliding sleeves 88 is slidably connected with trapezoidal blocks 89. A limit spring 810 is connected between the sliding sleeves 88 and the trapezoidal blocks 89. The top two sides of the pressure plate 86 are connected with telescopic spring columns 811, and the telescopic spring columns 811 are inserted into the top of the inner cavity of the lifting hollow platform 81. The outer two sides of the track slot block 83 are connected with short plates 812. The inner ends of the frame 5 are connected with drive plates 813, and the drive plates 813 are located directly above the short plates 812.

[0039] The hollow lifting platform 81 has an internal cavity that supports the KK module 82, the track block 83, and the pressure plate 86. The hollow lifting platform 81 can be driven by the drive module 7. The KK module 82 is a linear motion module commonly used in the prior art, which can drive the universal ball joint module 91 to move. The track block 83 can guide the track block 84 to move linearly. The slot 85 can cooperate with the short slot 87 to be inserted by the trapezoidal block 89, thereby limiting the position of the track block 84. The short plate 812 can be driven by the drive plate 813, which ultimately drives the pressure plate 86 to move.

[0040] The test base 1 has foot pads 12 evenly distributed at the four corners of its bottom, and the bottom of the foot pads 12 is equipped with rubber pads. The foot pads 12 can support the test base 1 and improve the stability of the test base 1 during operation, transportation and storage. The rubber pads can improve the adhesion between the foot pads 12 and the ground and prevent the device from shaking during use, thus avoiding the risk of tipping over.

[0041] The test base 1 is equipped with control modules 11 on both sides of the front. The control modules 11 include start / stop switches and emergency switches. The control modules 11 are connected to the control equipment 6 via wiring. The control modules 11 can start, stop and power off the internal mechanical structure of the test base 1, improve the overall safety performance of the device and avoid accidents during use.

[0042] The load sensor 2 is used to measure the tensile force applied to the sample. It can accurately convert the tensile force into an electrical signal for recording and analysis. At the same time, the test base 1 can also measure the elongation of the sample during the tensile process through the internal displacement measurement module, which improves the stability of the device and the accuracy of the data during the test.

[0043] Vertical slots 814 are evenly provided on both sides of the lifting hollow platform 81, and the vertical slots 814 are slidably connected to the short plate 812. The vertical slots 814 facilitate the drive plate 813 to transmit power to the rising short plate 812, and at the same time guide the short plate 812 and the pressure plate 86 to perform linear motion, and facilitate the connection and assembly of the short plate 812 with the pressure plate 86 during processing.

[0044] The short groove 87 and the sliding sleeve 88 are respectively arranged on the right side of the opposite end of the track block 83 and the pressure plate 86. The left side of the short groove 87 and the opposite end of the track block 83 is polished. The short groove 87 and the sliding sleeve 88 are designed with only one side, so that when the track block 84 slides to the right, it can be self-locked by the internal device. When the track block 84 moves to the left, it will not be locked by the device, thereby realizing the free adjustment of the position of the device.

[0045] The telescopic spring column 811 includes a hollow column and a sliding rod, with the hollow column and the sliding rod slidably connected. The hollow column and the sliding rod are respectively connected to the pressure plate 86 and the lifting hollow platform 81, and a spring is connected between the hollow column and the sliding rod. The telescopic spring column 811 is a common spring telescopic arm in the prior art, which can guide the sliding sleeve 88 and the lifting hollow platform 81, and at the same time pull the pressure plate 86 to return to its original position after the drive plate 813 stops resisting the short plate 812, thereby improving the overall automation of the device.

[0046] The control device 6 is responsible for controlling various parameters during the test, such as tensile speed and load holding time. It includes a computer, software interface and necessary electronic components. Users can set test parameters, start the test, monitor the test process and record the results through the control device 6. The data displayed in the test can be adjusted and printed out, so that the staff can easily view the test data.

[0047] The test base 1 includes a main frame, and a display module is installed inside the main frame. The main frame also houses a control system, a displacement measurement module, and calibration standard components. The main frame can assemble the display module, control system, and displacement measurement module, which can perform tensile strength testing on the workpiece.

[0048] A protective door 51 is installed on the inner left side of the frame 5. The protective door 51 includes a glass door, which is connected to the frame 5 by a hinge. The protective door 51 can close the frame 5 to prevent the workpiece from breaking during testing and causing fragments to fly and cause splash injuries to the surrounding personnel, thereby improving the overall safety performance of the device.

[0049] The first clamp 3 and the second clamp 9 are respectively provided with locking pins 4 inserted on their exteriors, and the locking pins 4 are covered with anti-slip sleeves. The locking pins 4 can be inserted into the interior of the first clamp 3 and the second clamp 9, thereby locking the first clamp 3 and the second clamp 9, improving the stability of the first clamp 3 and the second clamp 9 after clamping the workpiece, and preventing the workpiece from detaching from the device, thus causing the detection failure.

[0050] The right side of the trapezoidal block 89 is designed with an inclined surface, and the trapezoidal block 89 is inserted into the short slot 87. The inclined design of the trapezoidal block 89 facilitates the sliding of the track block 84 on the right side, preventing the track block 84 from returning to its original position, thereby avoiding any impact on the device's detection data.

[0051] First, connect the test base 1 to the external power supply, turn on the control module 11, and connect it to the computer only after the device has warmed up and stabilized.

[0052] Check if the device is working properly, input the measured sample size, select the test scheme, and at the same time, measure the length, width, and thickness of the sample, take the average value of each parameter and record the data.

[0053] The first fixture 3 and the second fixture 9 are assembled, and then tested and calibrated. The workpiece to be tested is then assembled inside the first fixture 3 and the second fixture 9 and fixed. After fixing, it is checked whether it is fixed firmly. The drive module 7 is started to drive the testing mechanism 8 to rise, thereby realizing the tensile test of the workpiece. The test data is transmitted to the test base 1 for display through the load sensor 2.

[0054] The KK module 82 is activated, which drives the universal ball joint module 91 to move to the right, thereby driving the second clamp 9 to pull the workpiece to be subjected to force at different angles, thus realizing the tensile strength test of the workpiece at different angles.

[0055] When the lifting hollow platform 81 rises to pull the workpiece, it will cause the short plate 812 to be pushed against the driven plate 813, which in turn causes the pressure plate 86 to fall, so that the trapezoidal block 89 is inserted into the slot 85.

[0056] When the omnidirectional ball joint module 91 moves to the left, it drives the track block 84 to move together, which in turn drives the slot 85 to slide at the bottom of the trapezoidal block 89. When the slot 85 moves to the right, it will rise by abutting against the trapezoidal block 89 through the inclined surface of the trapezoidal block 89. When the position of the slot 85 is fixed, its position will be locked by the outer plane of the trapezoidal block 89 to prevent the trapezoidal block 89 from returning to its original position after it is fixed.

[0057] When the shaft workpiece is fixed for testing, the added kk module 82, universal ball joint module 91 and second clamp 9 can pull the workpiece to test at different angles, realizing the simulation of the shaft workpiece being stretched in the working state. This avoids the fact that traditional testing devices can only pull the workpiece at a vertical angle, thus failing to fully test the tensile resistance of the workpiece.

[0058] When the KK module 82 drives the second fixture 9 to move, the added track groove block 83, track block 84, slot 85, pressure plate 86, short groove 87, sliding sleeve 88 and trapezoidal block 89 can lock the position of the workpiece, improve the stability of the workpiece during inspection, and prevent the workpiece from sliding during inspection, thereby affecting the inspection data.

[0059] When shaft-type workpieces are inspected, the added drive plate 813 and short plate 812 allow the automatic drive trapezoidal block 89 to insert into the slot 85 when the lifting hollow platform 81 moves, preventing the second clamp 9 from returning to its original position. When the lifting hollow platform 81 returns to its original position, the restriction on the slot 85 and the track block 84 is lifted, and the track block 84 can then automatically return to its original position, improving the overall automation of the device.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kind of shaft workpiece tensile strength detection machine, including test base (1), load sensor (2), first clamp (3), rack (5), control device (6), drive module (7), detection mechanism (8) and second clamp (9), the load sensor (2) has two groups, respectively assembled in detection mechanism (8) and the opposite end of test base (1), the opposite end of two groups of load sensor (2) is respectively connected with first clamp (3) and second clamp (9), the rack (5) is assembled in the upper end surface of test base (1), and drive module (7) is assembled in the inner chamber of rack (5), the detection mechanism (8) is assembled between two drive modules (7), it is characterized by: The detection mechanism (8) comprises a lifting hollow table (81), and the lifting hollow table (81) is connected with the output end of the driving module (7); the inside of the lifting hollow table (81) is welded with a kk module (82); the output end of the kk module (82) is connected with a universal ball hinge module (91); the output end of the universal ball hinge module (91) is connected with a load sensor (2) near one end of the detection mechanism (8); the inner cavities of the lifting hollow table (81) are both connected with track groove blocks (83); the inside of the track groove block (83) is slidably connected with a track block (84), and the track block (84) is connected with the universal ball hinge module (91); the upper end face of the track block (84) is provided with a clamping groove (85); the upper end face right side of the track groove block (83) is uniformly provided with a short groove (87); the inside of the lifting hollow table (81) is slidably connected with a pressing plate (86) at both ends, and the bottom of the pressing plate (86) is uniformly fitted with a sliding sleeve (88); the inside of the sliding sleeve (88) is slidably connected with a trapezoidal block (89); the sliding sleeve (88) and the trapezoidal block (89) are connected with a limiting spring (810); the top of the pressing plate (86) is connected with an extension spring column (811) on both sides, and the extension spring column (811) is inserted into the inner cavity top of the lifting hollow table (81); the outside of the track groove block (83) is connected with a short plate (812) on both sides; the inner side of the rack (5) is connected with a driving plate (813) at both ends, and the driving plate (813) is located directly above the short plate (812).

2. The axial workpiece tensile strength detection machine according to claim 1, characterized in that: The bottom of the test base (1) is uniformly provided with a foot pad (12) at the four corners, and the bottom of the foot pad (12) is fitted with a rubber pad.

3. The axial workpiece tensile strength detection machine according to claim 1, characterized in that: The front of the test base (1) is fitted with a control module (11) on both sides, and the control module (11) comprises a start-stop switch and an emergency switch, and the control module (11) is connected with the control device (6) through a circuit.

4. The axial workpiece tensile strength detection machine according to claim 1, characterized in that: The two sides of the lifting hollow table (81) are uniformly provided with vertical grooves (814), and the vertical grooves (814) are slidably connected with the short plates (812).

5. The axial workpiece tensile strength detection machine according to claim 1, characterized in that: The short grooves (87) and the sliding sleeves (88) are respectively arranged on the opposite right sides of the track groove blocks (83) and the pressing plates (86), and the left side of the short groove (87) opposite the track groove block (83) is polished.

6. The axial workpiece tensile strength detection machine according to claim 1, characterized in that: The extension spring column (811) comprises a hollow column and a sliding rod, and the hollow column and the sliding rod are slidably connected, the hollow column and the sliding rod are respectively connected with the pressing plate (86) and the lifting hollow table (81), and a spring is connected between the hollow column and the sliding rod.

7. The axial workpiece tensile strength detection machine according to claim 1, characterized in that: The test base (1) comprises a main frame, and the inside of the main frame is fitted with a display module, and the inside of the main frame is respectively fitted with a control system, a displacement measurement module and a calibration standard part.

8. The axial workpiece tensile strength detection machine of claim 1, wherein: The inner left side of the rack (5) is fitted with a protective door (51), and the protective door (51) comprises a glass door connected with the rack (5) through a hinge.

9. The axial workpiece tensile strength detection machine according to claim 1, characterized in that: The first clamp (3) and the second clamp (9) are respectively provided with locking pins (4) outside, and the locking pins (4) are provided with anti-skid sleeves outside.

10. The axial workpiece tensile strength detection machine of claim 1, wherein: The right side of the trapezoidal block (89) is designed as an inclined surface, and the trapezoidal block (89) is inserted into the short groove (87).

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