Fastener torsion testing machine

Abstract

The utility model discloses a fastener torsion testing machine which comprises a base, a fixed mounting part, a movable mounting part, two chucks, two servo motors, a control terminal, two groups of torque sensors and a position sensor. Firstly, the distance between the two chucks is increased, and a fastener needing to be measured is placed between the two chucks; the distance between the two chucks is reduced, so that the two ends of the fastener enter the two chucks respectively; then the two chucks clamp the two ends of the fastener respectively; and finally, the two servo motors control the two chucks to rotate reversely, and opposite torques are applied to the fastener. Correspondingly, the torques of the two servo motors and the rotating angles of the two chucks are input into a control terminal. The device has the beneficial effects that the operation is faster and more convenient, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a fastener, in particular to a fastener torsion testing machine. Background Art

[0002] The torsion test of fasteners generally requires the use of a corresponding torsion testing machine. The current torsion testing machine generally uses two clamps, which are matched with a bench vise to clamp the threaded part of the fastener. The base of the bench vise is also equipped with a vertical optical axis. The optical axis is provided with a mounting block that can slide up and down and fix the position. The mounting block is rotatably connected to a shaft, and the shaft is aligned with the fastener clamped on the bench vise. The lower end of the shaft can be detached from a variety of different screwdriver heads, and the upper end of the shaft is connected to a torque wrench. In this way, after the fastener is installed in the bench vise, the corresponding bolt cutter head is installed on the lower end of the shaft, and the mounting block is moved down so that the screwdriver head and the nut part of the fastener are matched. The torque wrench acts on the upper end of the shaft to rotate the screwdriver head and the fastener. When the bolt is twisted off, the torque on the torque wrench is vertical. At present, this type of torsion testing machine is relatively complicated to operate and the testing efficiency is not high. Utility Model Content

[0003] The present application provides a fastener torsion testing machine, which can solve the problems raised in the background technology.

[0004] In the present application, a fastener torsion testing machine is provided, comprising

[0005] Base;

[0006] A fixed installation portion, fixedly connected to the first side of the base;

[0007] A movable mounting portion, which is fixedly connected to a second side of the base opposite to the first side and capable of adjusting its position;

[0008] Two chucks are rotatably connected to the fixed mounting portion and the movable mounting portion respectively;

[0009] Two servo motors are respectively arranged on the fixed installation part and the movable installation part, and respectively drive the two chucks to rotate;

[0010] A control terminal connected to the two servo motors;

[0011] Two sets of torque sensors are respectively arranged between the corresponding servo motors and the chucks, and are also connected to the control terminal;

[0012] Two groups of position sensors act on the two chucks respectively and are also connected to the control terminal.

[0013] Furthermore, it also includes a protective cover, which is movably connected between the fixed installation part and the movable installation part and covers the position between the two chucks.

[0014] Furthermore, there are multiple protective covers with different lengths.

[0015] Furthermore, the protective cover is a foldable film, one side of which is fixedly connected to one of the fixed mounting part and the movable mounting part, and the other side of which is detachably connected to the other of the fixed mounting part and the movable mounting part.

[0016] Furthermore, a screw module for driving the movable mounting portion to move is disposed on the second side of the base.

[0017] In summary, in the present application, a fastener torsion testing machine includes a base, a fixed mounting portion, a movable mounting portion, two chucks, two servo motors, a control terminal, two sets of torque sensors and position sensors. First, the distance between the two chucks is increased, and the fastener to be measured is placed between the two chucks; then the distance between the two chucks is reduced so that the two ends of the fastener enter the two chucks respectively; then the two chucks clamp the two ends of the fastener respectively; finally, the two servo motors control the two chucks to rotate in opposite directions, applying opposite torques to the fasteners. Accordingly, the torque on the two servo motors and the rotation angle of the two chucks are input into the control terminal. Beneficial effects: faster and more convenient operation, improved testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0019] Figure 1 A schematic diagram of this application;

[0020] Figure 2 It is a schematic diagram of the servo motor, torque sensor, chuck and position sensor;

[0021] Figure 3 It is a schematic diagram of the screw rod module;

[0022] Figure 4 is a schematic diagram of a protective cover;

[0023] Figure 5 A schematic diagram of another protective cover.

[0024] In the figure,

[0025] 1. Base;

[0026] 2. Fixed installation part;

[0027] 3. Activity installation department;

[0028] 4. Chuck; 4a. Toothed disc;

[0029] 5. Servo motor;

[0030] 6. Control terminal;

[0031] 7. Torque sensor;

[0032] 8. Position sensor;

[0033] 9. Screw rod module; 9a. Install the slider;

[0034] 10. Protective cover. DETAILED DESCRIPTION

[0035] The following is further explained in conjunction with the accompanying drawings. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] See also Figure 1 and Figure 2 A fastener torsion testing machine includes a base 1, a fixed mounting part 2, a movable mounting part 3, two chucks 4, two servo motors 5, a control terminal 6, two sets of torque sensors 7 and a position sensor 8.

[0037] The fixed mounting portion 2 is fixedly connected to a first side of the base 1. The movable mounting portion 3 is fixedly connected to a second side of the base 1 opposite to the first side and can be adjusted in position. Specifically, an optical axis can be provided between the movable mounting portion 3 and the base 1 to enable the movable mounting portion 3 to slide relative to the base 1. The movable mounting portion 3 can be provided with a bolt that fixes itself to the optical axis to enable the movable mounting portion 3 to be fixed relative to the base 1.

[0038] See also Figure 3 In some embodiments, a screw module 9 for driving the movable mounting portion 3 to move is disposed on the second side of the base 1. That is, the mounting frame of the screw module 9 is fixedly connected to the base 1, and the movable mounting portion 3 is fixedly connected to the mounting slider 9a of the screw module 9. The screw module 9 is used to drive the movable mounting portion 3 to move and adjust the fixed position of the movable mounting portion 3 relative to the base 1.

[0039] The two chucks 4 are rotatably connected to the fixed mounting portion 2 and the movable mounting portion 3 respectively. By adjusting the position of the movable mounting portion 3 on the base 1 , the distance between the two chucks 4 can be adjusted.

[0040] Two servo motors 5 are respectively arranged on the fixed installation part 2 and the movable installation part 3 to respectively drive the two chucks 4 to rotate.

[0041] The control terminal 6 is connected to the two servo motors 5 .

[0042] See also Figure 2 Two groups of torque sensors 7 are provided, one group is provided between the servo motor 5 and the chuck 4 on the fixed mounting part 2, and the other group is provided between the servo motor 5 and the chuck 4 on the movable mounting part 3. Specifically, a coupling can be used to connect the servo motor 5 and the torque sensor 7, and the chuck 4 and the torque sensor 7. Both groups of torque sensors 7 are also connected to the control terminal 6.

[0043] Two sets of position sensors 8, one set is arranged on the fixed mounting part 2, and the other set is arranged on the movable mounting part 3, respectively acting on the two chucks 4 to measure the positions of the corresponding chucks 4. Specifically, the position sensor 8 can be a Hall type, and a toothed disc 4a with a circle of teeth is fixed on the chuck 4. The position sensor 8 corresponds to the toothed disc 4a and outputs a toothed signal. According to the number of teeth between the initial position and the stop position of the chuck 4, the rotation angle of the chuck 4 can be calculated. The two sets of position sensors 8 are also connected to the control terminal 6.

[0044] In this way, the distance between the two chucks 4 is first increased, and the fastener to be measured is placed between the two chucks 4; then the distance between the two chucks 4 is reduced, so that the two ends of the fastener enter the two chucks 4 respectively; then the two chucks 4 clamp the two ends of the fastener respectively; finally, the two servo motors 5 control the two chucks 4 to rotate in opposite directions, applying opposite torques to the fastener. Accordingly, the torques on the two servo motors 5 and the rotation angles of the two chucks 4 are input to the control terminal 6.

[0045] See also Figure 4 and Figure 5 In some embodiments, the fastener torsion testing machine further includes a protective cover 10. The protective cover 10 is movably connected between the fixed mounting portion 2 and the movable mounting portion 3, and covers the position between the two chucks 4. That is, before the fastener is fixed to the two chucks 4, the protective cover 10 is first removed; after the fastener is fixed to the two chucks 4, the protective cover 10 is installed, and then the two servo motors 5 are started. In this way, when the fastener is twisted off, debris can be prevented from splashing out.

[0046] See also Figure 4Furthermore, the number of protective covers 10 is multiple and the lengths are different. Specifically, both ends of the protective cover 10 may have protrusions, and the movable mounting portion 3 and the fixed mounting portion 2 may have matching slots. According to the measured length of the fastener, a protective cover 10 of a suitable length is selected.

[0047] See also Figure 5 Furthermore, the protective cover 10 is a foldable film, that is, the film has a plurality of folds, and its length can be changed by folding. One side of the film is fixedly connected to one of the fixed mounting part 2 and the movable mounting part 3, and the other side is detachably connected to the other of the fixed mounting part 2 and the movable mounting part 3. Specifically, the detachable manner is to set a Velcro between the two. Compared with using a plurality of protective covers 10 of different lengths, using a foldable film as the protective cover 10 is more convenient to use.

Claims

1. A fastener torsion testing machine, characterized in that: include Base (1); A fixed installation portion (2) fixedly connected to a first side of the base (1); A movable mounting portion (3) which is fixedly connected to a second side of the base (1) opposite to the first side and capable of adjusting its position; Two chucks (4) are rotatably connected to the fixed mounting portion (2) and the movable mounting portion (3) respectively; Two servo motors (5) are respectively arranged on the fixed mounting portion (2) and the movable mounting portion (3), and respectively drive the two chucks (4) to rotate; A control terminal (6) connected to the two servo motors (5); Two sets of torque sensors (7), respectively arranged between the corresponding servo motors (5) and the chuck (4), and both connected to the control terminal (6); Two groups of position sensors (8), acting on the two chucks (4) respectively, are also connected to the control terminal (6).

2. A fastener torsion testing machine according to claim 1, characterized in that: It also comprises a protective cover (10) which is movably connected between the fixed installation part (2) and the movable installation part (3) and covers the position between the two chucks (4).

3. A fastener torsion testing machine according to claim 2, characterized in that: The number of the protective covers (10) is multiple and the lengths are different.

4. A fastener torsion testing machine according to claim 2, characterized in that: The protective cover (10) is a foldable film, one side of which is fixedly connected to one of the fixed mounting part (2) and the movable mounting part (3), and the other side of which is detachably connected to the other of the fixed mounting part (2) and the movable mounting part (3).

5. A fastener torsion testing machine according to claim 1, characterized in that: The second side of the base (1) is provided with a screw module (9) for driving the movable mounting portion (3) to move.

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