High-precision electronic universal testing machine

Abstract

The utility model belongs to the technical field of universal testing machines, and particularly relates to a high-precision electronic universal testing machine, which comprises a rack, a cross beam, two chucks, a sliding seat, a sensor, a ball screw and a pressure head, the two chucks are respectively connected onto the rack and the sensor, the sensor is connected onto the upper surface of the sliding seat, and the ball screw is connected with the pressure head. The two sides of the chuck are in threaded transmission connection with compression bolts, the sliding seat is connected with two ball screws, one end of each ball screw is rotationally connected to a first support through a rotating bearing, the other end of each ball screw is connected with the output end of a power device, and the first support is connected to a rack; compared with the prior art, one set of loading device can be used for carrying out two tests of tensile resistance and bending resistance, the application range of equipment is enlarged, and meanwhile, the design of double servo motors is adopted, so that the stability and the accuracy in the loading process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of universal testing machines, in particular to a high-precision electronic universal testing machine. Background Art

[0002] Electronic universal testing machine is an experimental equipment widely used in the field of material mechanical properties testing. It is used to test and analyze the mechanical properties of various materials. It is an important equipment commonly found in laboratories and is widely used in the fields of material science, mechanical engineering, construction engineering, etc.

[0003] The electronic universal testing machine can perform many different types of mechanical property tests, including tensile, compression, tearing and other tests. This makes it suitable for the performance evaluation and research of various materials, such as metals, plastics, rubber, composite materials, etc. The electronic universal testing machine has a high-precision measurement system and control system, which can achieve high-precision measurement and control of parameters such as specimen force and deformation. This makes the test results more accurate and reliable, meeting the needs of scientific research and engineering experiments. The electronic universal testing machine supports a variety of test modes, such as constant speed tension, constant speed compression, cyclic loading, etc. This allows users to choose the appropriate test mode for testing according to different test requirements, and can monitor and record test data in real time and generate test reports. This helps to analyze and compare the test results and provide a reference for further research and engineering design.

[0004] The existing electronic universal testing machines for testing the tensile strength of materials usually do not include the functions of testing the flexural and bending resistance, so it is necessary to invent an integrated electronic universal testing machine that can test the bending resistance of materials. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model develops a high-precision electronic universal testing machine, which can use a set of loading devices to perform two tests, namely, tensile and bending tests, thereby increasing the use range of the equipment. At the same time, a dual servo motor design is adopted to improve the stability and accuracy of the loading process.

[0006] The technical solution to the technical problem solved by the utility model is: a high-precision electronic universal testing machine, comprising a frame, a crossbeam, a chuck, a sliding seat, a sensor, a ball screw and a pressure head, wherein two chucks are provided, respectively connected to the frame and the sensor, the sensor is connected to the upper surface of the sliding seat, both sides of the chuck are threadedly connected with clamping bolts, the sliding seat is connected to the ball screw, two ball screws are provided, one end of which is rotatably connected to the first support through a rotating bearing, and the other end is connected to the output end of the power device, and the first support is connected to the frame;

[0007] The crossbeam is installed on the frame, located between the sliding seat and the power device and provided with a through hole at a position corresponding to the ball screw, the crossbeam is connected with a placement block, a limiting block is provided on the placement block, and limiting holes are provided in a linear array along the length direction of the crossbeam at positions corresponding to the limiting blocks on the crossbeam, and the pressure head is connected to the lower surface of the sliding seat.

[0008] Preferably, slide rails are symmetrically arranged on both sides of the crossbeam along the width direction, baffles are slidably connected to the slide rails, and two baffles are arranged on the slide rails on both sides.

[0009] Preferably, the baffle is made of transparent material.

[0010] Preferably, the power device is a servo motor, the servo motor is connected to the second support via a flange, and the second support is connected to the frame.

[0011] Preferably, the limit block and the limit hole are in a "T" shape, the limit block is symmetrically arranged along the center of the length direction of the placement block, and the limit hole is symmetrically arranged along the center of the width direction of the beam.

[0012] Preferably, a handle is connected to the clamping bolt.

[0013] Preferably, the frame is connected with side supports.

[0014] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0015] 1. By setting two ball screws and two servo motors, a more stable output can be provided during the loading process, thus improving the test accuracy;

[0016] 2. By setting a crossbeam between the bottom of the sliding seat and the servo motor, setting a pressure head on the lower surface of the sliding seat, and setting a placement block on the crossbeam, a sliding seat can be used to meet the requirements of tensile and bending tests at the same time, making the equipment more widely applicable;

[0017] 3. By setting a "T"-shaped limit block on the placement block and cooperating with the "T"-shaped limit hole set on the beam, the distance between the two placement blocks can be adjusted according to the use requirements. The "T"-shaped structure can also make the positioning more stable and improve the test accuracy;

[0018] 4. By setting up side supports, the overall stability of the equipment can be improved and the accuracy of the test can be ensured;

[0019] 5. By sliding the connecting baffle on the crossbeam, the baffles on both sides can be slid to the middle position during the bending test to block the rigid material from cracking and splashing, thus protecting the safety of the operator. The baffle is made of transparent material, so the internal test conditions can be observed in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the front view of the utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of the middle A area;

[0022] Figure 3 It is the overall structural diagram of the utility model;

[0023] Figure 4 for Figure 3 A partial enlarged view of the middle A area;

[0024] Figure 5 This is the overall structural diagram of the storage block.

[0025] Among them: 1. frame; 101. side support; 2. crossbeam; 21. slide rail; 22. limit hole; 3. chuck; 31. clamping bolt; 32. handle; 4. sliding seat; 41. sensor; 5. ball screw; 51. first support; 6. servo motor; 61. second support; 7. baffle; 8. pressure head; 9. storage block; 91. limit block. DETAILED DESCRIPTION

[0026] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0027] Example 1

[0028] See also Figures 1 to 5 A high-precision electronic universal testing machine includes a frame 1, a crossbeam 2, a chuck 3, a sliding seat 4, a sensor 41, a ball screw 5 and a pressure head 8. The chuck 3 is provided with two, which are respectively connected to the frame 1 and the sensor 41. The sensor 41 is connected to the upper surface of the sliding seat 4. Both sides of the chuck 3 are threadedly connected with a clamping bolt 31. The sliding seat 4 is connected to the ball screw 5. The ball screw 5 is provided with two, one end of which is rotatably connected to the first support 51 through a rotating bearing, and the other end is connected to the output end of the power device. The first support 51 is connected to the frame 1;

[0029] The crossbeam 2 is installed on the frame 1, located between the sliding seat 4 and the power device and provided with a through hole at the position corresponding to the ball screw 5. The crossbeam 2 is connected with a placement block 9, and an array of grooves is provided on the surface of the placement block 9. A limit block 91 is provided on the placement block 9. A position on the crossbeam 2 corresponding to the limit block 91 is provided with a linear array of limit holes 22 along the length direction of the crossbeam 2. The pressure head 8 is connected to the lower surface of the sliding seat 4.

[0030] like Figure 1 , Figure 3 and Figure 4 As shown, the crossbeam 2 is symmetrically provided with slide rails 21 on both sides along the length direction, and baffles 7 are slidably connected in the slide rails 21 , and two baffles 7 are provided in the slide rails 21 on both sides.

[0031] like Figure 3 As shown, the baffle 7 is made of transparent material, so that the condition of the workpiece to be tested can be observed in real time during the test.

[0032] like Figure 1 As shown, the power device is a servo motor 6 , and the servo motor 6 is connected to a second support 61 via a flange, and the second support 61 is connected to the frame 1 .

[0033] like Figure 4 and Figure 5 As shown, the limiting block 91 and the limiting hole 22 are in a "T" shape. The limiting block 91 is symmetrically arranged along the center of the width direction of the storage block 9, and the limiting hole 22 is symmetrically arranged along the center of the width direction of the beam 2.

[0034] like Figure 1 and Figure 2 As shown, the clamping bolt 31 is connected with a handle 32, which can make it easier to exert force when fixing the workpiece to be measured for tightening.

[0035] like Figure 3 As shown, side supports 101 are connected to the two upright posts of the frame 1 .

[0036] Principle and operation process

[0037] When conducting a tensile strength test, the workpiece to be tested is clamped on the chuck 3 installed on the frame 1, and the clamping position is fixed by the clamping bolt 31. The servo motor 6 is started, and the sliding seat 4 is adjusted until the chuck 3 on the sliding seat 4 can also clamp the workpiece to be tested. The clamping bolt 31 is tightened to complete the fixation of the workpiece to be tested. The servo motor 6 is started to rotate the ball screw 5, and the sliding seat 4 moves along the ball screw 5. The servo motor 6 is started and the corresponding force is applied to perform tests such as tension or compression. The data collected by the sensor 41 is monitored in real time, and the force, displacement and other parameters during the test are recorded.

[0038] When the bending resistance of the workpiece to be tested needs to be tested, according to the test requirements, first adjust the positions of the two placement blocks 9 according to the length of the workpiece to be tested and the test requirements, place the workpiece to be tested in the groove of the placement block 9 after the adjustment, adjust the test parameters of the pressure head 8, slide the baffle 7 to the middle position, completely cover the workpiece to be tested, start the servo motor 6, drive the sliding seat 4 to move downward, and then the bending resistance mechanical performance test can be carried out. After the test is completed, stop the power device, release the chuck 3, and remove the test sample.

[0039] Driven by the servo motor 6, the ball screw 5 rotates to drive the sliding seat 4 to move up and down along the screw, and then the position of the pressure head 8 is adjusted to apply corresponding force when performing the bending test; when performing the tensile test, the sliding seat 4 moves, driving the chuck 3 on the sliding seat 4 to move downward, and the sensor 41 receives data at the same time.

[0040] The side supports 101 are arranged on both sides of the upright column of the rack 1, so as to improve the overall stability of the equipment, reduce the influence of shaking on the test results, and improve the test accuracy.

[0041] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A high-precision electronic universal testing machine, comprising a frame (1), characterized in that: It also includes a crossbeam (2), a chuck (3), a sliding seat (4), a sensor (41), a ball screw (5) and a pressure head (8), wherein two chucks (3) are provided and are respectively connected to the frame (1) and the sensor (41), the sensor (41) is connected to the upper surface of the sliding seat (4), both sides of the chuck (3) are threadedly connected to clamping bolts (31), the sliding seat (4) is connected to the ball screw (5), two ball screws (5) are provided, one end of which is rotatably connected to the first support (51) through a rotating bearing, and the other end is connected to the output end of the power device, and the first support (51) is connected to the frame (1); The crossbeam (2) is mounted on the frame (1), located between the sliding seat (4) and the power device and provided with a through hole at a position corresponding to the ball screw (5); a placement block (9) is connected to the crossbeam (2); a limit block (91) is provided on the placement block (9); limit holes (22) are provided in a linear array along the length direction of the crossbeam (2) at positions on the crossbeam (2) corresponding to the limit blocks (91); and the pressure head (8) is connected to the lower surface of the sliding seat (4).

2. A high-precision electronic universal testing machine according to claim 1, characterized in that: Slide rails (21) are symmetrically arranged on both sides of the crossbeam (2) in the width direction, and baffles (7) are slidably connected to the slide rails (21). Two baffles (7) are arranged on each of the slide rails (21) on both sides.

3. A high-precision electronic universal testing machine according to claim 2, characterized in that: The baffle (7) is made of transparent material.

4. A high-precision electronic universal testing machine according to claim 1, characterized in that: The power device is a servo motor (6), the servo motor (6) is connected to a second support (61) via a flange, and the second support (61) is connected to the frame (1).

5. The high-precision electronic universal testing machine according to claim 1, characterized in that: The limiting block (91) and the limiting hole (22) are in a "T" shape; the limiting block (91) is symmetrically arranged along the center of the length direction of the storage block (9); and the limiting hole (22) is symmetrically arranged along the center of the width direction of the crossbeam (2).

6. A high-precision electronic universal testing machine according to claim 1, characterized in that: The clamping bolt (31) is connected to a handle (32).

7. A high-precision electronic universal testing machine according to claim 1, characterized in that: The frame (1) is connected to a side support (101).

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