Automatic detection device for fatigue resistance of bit

Abstract

The utility model provides an automatic detection device for fatigue resistance of a bit. The automatic detection device comprises a rack, and a fixing assembly, a test board, a control assembly and a counting assembly which are arranged on the rack, the fixing assembly is matched with the screwdriver head and can be used for fixing the screwdriver head; the test bench is located below the screwdriver head, a screw hole used for testing is formed in the test bench, and the screw hole is matched with a screw used for testing the screwdriver head; the control assembly can be used for controlling the screwdriver head to rotate and ascend and descend. The counting assembly is electrically connected with the control assembly and can be used for recording the round-trip times that the screwdriver bit fastens the screw downwards and then unscrews the screw upwards. Therefore, the screw can be automatically and repeatedly tightened downwards and unscrewed upwards for multiple times by controlling the rotation and lifting motion of the screwdriver bit, the test frequency is automatically recorded, the detection time can be shortened, the detection efficiency can be improved, the test accuracy can be improved, and the detection precision can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test equipment technical field especially relates to a batch head fatigue strength automatic detection device. BACKGROUND

[0002] A bit (also known as a screwdriver bit or screwdriver head) is a tool head used for rotating a screw, usually used in cooperation with a screwdriver handle, an electric screwdriver, a pneumatic screwdriver, and other tools. The bit is mainly used to transmit torque between the screw and the driving tool, so that the user can effectively install or disassemble the screw. The bit is widely used in various industries, such as automobile manufacturing, electronic product manufacturing, mechanical equipment manufacturing, aerospace, shipbuilding and ocean engineering, medical equipment, etc.

[0003] In order to ensure the quality and performance of the bit, a series of strict tests are usually required during production, including material testing, mechanical property testing, surface treatment and coating testing, geometric precision testing, functional testing, environmental performance testing, safety testing, and other certification and compliance testing. Among them, the mechanical property testing includes fatigue strength detection, which simulates long-term, high-frequency repeated loading and unloading (tightening and loosening) to test whether the bit can maintain its structural integrity and functional stability for a long time. The fatigue strength detection of the bit is of great significance for ensuring tool reliability, prolonging service life, preventing safety accidents, etc. It not only meets the basic quality control requirements, but also protects the safety and interests of the user.

[0004] In the production process of the bit, the fatigue strength detection of the bit is a reliability test, which generally needs to detect whether the bit can maintain its structural integrity and functional stability for a long time in a specified number of repeated tightening and loosening. Taking 4000 times of specified repeated tightening and loosening as an example, in the prior art, it is generally necessary to rely on the inspector to detect by using manpower, that is, to manually use the bit to repeatedly tighten and loosen the screw, and to record the relevant number. The above manual detection method not only has long detection time, high labor intensity of the inspector, and low detection efficiency, but also cannot guarantee the accuracy and number of detection, which may have inconsistent operation methods, inaccurate test number, etc., ultimately affecting the accuracy of the detection result, and is not conducive to the consistency control of quality. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of bit fatigue strength automatic detection device, can realize the automatic multiple repeated tightening and loosening of bit, improve bit fatigue strength detection efficiency, improve detection precision.Specific scheme is as follows:

[0006] The application discloses a kind of batch head fatigue strength automatic detection device, including rack and setting on the rack Fixed component, test table, control component and counting component;

[0007] The fixed component is adapted to the head, and can be used to fix the head;

[0008] The test table is located below the head, and a screw hole for testing is provided on the test table, which is adapted to the screw for testing the head;

[0009] The control component can be used to control the rotation and lifting movement of the head;

[0010] The counting component is electrically connected to the control component, and can be used to record the number of times the head tightens the screw downward and then loosens the screw upward.

[0011] Further, the fixed component is an electric screwdriver or a pneumatic screwdriver, and a switch part and a direction adjusting part are provided on the fixed component;The switch part can control the head to start or stop rotating and lifting movement;The direction adjusting part can adjust the rotation direction of the head;The control component includes a first control part and a second control part, the first control part can control the switch of the switch part, and the second control part can drive the direction adjusting part to adjust.

[0012] Further, the switch part is a normally closed switch button, which can control the head to start rotating and lifting movement when pressed, and stop rotating and lifting movement when released;The first control part is a linear cylinder, which can control the pressing and releasing of the normally closed switch button through linear motion.

[0013] Further, the direction adjusting part is a reversing knob, which can correspondingly control the forward and reverse rotation of the head by turning to different positions;The second control part is a rotary cylinder, which can control the rotation of the reversing knob through rotary motion.

[0014] Further, the test table includes a test plate and a support seat;The screw hole is provided on the test plate, the test plate is horizontally arranged above the support seat, the support seat is fixed on the rack, and the distance between the test plate and the top of the support seat is adapted to the length of the screw.

[0015] Further, at least two screw holes are provided on the test plate, and the test plate can move laterally on the support seat.

[0016] Further, a sliding groove is arranged on the test plate, a sliding column is arranged on the support base and is adapted to the sliding groove and can slide on the sliding groove, and a locking component is further arranged on the sliding column and can prevent the sliding column from sliding on the sliding groove.

[0017] Further, the test table is provided with a horizontal movement automatic control system, the at least two screw holes are arranged on the test plate and are uniformly spaced along a straight line, and the horizontal movement automatic control system can control the test plate to automatically move horizontally by a distance of two screw hole spacings each time.

[0018] Further, the device further comprises a sensing device and an alarm device, the sensing device is electrically connected with the control assembly and the alarm device, the sensing device comprises a first sensor and a second sensor, the first sensor is located on the side of the bottom of the screw hole, the second sensor is located below the first sensor, when the screw is tightened on the screw hole, the tail end of the screw is located on the same horizontal plane as the second sensor, the first sensor and the second sensor can respectively detect the existence of the screw on the horizontal plane where they are located, and send a signal feedback to the control assembly for continuous action or to the alarm device for starting alarm according to the detection condition.

[0019] Further, the device further comprises a control panel, the control panel comprises a start button, a reset button, an emergency stop button and a touch screen.

[0020] The batch head fatigue strength automatic detection device provided by the utility model, through the mutual cooperation between the fixing assembly, the test table, the control assembly and the counting assembly, the rotation and lifting movement of the batch head can be controlled, the screw can be automatically tightened and loosened repeatedly, manual tightening and loosening are not needed, the labor intensity of the inspector can be reduced, the detection time can be shortened, and the detection efficiency can be improved; meanwhile, deviation caused by manual operation can be avoided, and the experimental accuracy can be improved; in addition, the counting assembly automatically counts once after each tightening and loosening, the automatic recording of the test times can be realized, errors caused by manual statistics can be avoided, and the detection precision can be improved.

[0021] Further, at least two screw holes are arranged on the test plate, and the test plate can move horizontally on the support base, when a single screw hole is affected by the test accuracy due to excessive test times and thread wear, the test plate can be moved to use a new screw hole for test, and the test plate does not need to be replaced, the reliability and flexibility of the batch head fatigue strength automatic detection device can be improved.

[0022] Further, by the setting of the first inductor, the second inductor and the alarm device, the intelligence, the reliability and the safety of the batch head fatigue strength automatic detection device can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Structure diagram of batch head fatigue strength automatic detection device Figure 1 .

[0024] Figure 2 Structure diagram of batch head fatigue strength automatic detection device Figure 2 .

[0025] Figure 3 Structure diagram of batch head fatigue strength automatic detection device Figure 3 .

[0026] Figure 4 is Figure 3 Local enlarged view of A part in FIG. 1.

[0027] Figure 5 Structure diagram of test table

[0028] The reference signs are as follows: 1 is a batch head, 11 is a screw, 2 is a rack, 3 is a fixing assembly, 31 is a switch part, 32 is a direction adjusting part, 4 is a test table, 41 is a screw hole, 42 is a test plate, 421 is a sliding groove, 43 is a support seat, 431 is a sliding column, 5 is a control assembly, 51 is a first control part, 52 is a second control part, 6 is a counting assembly, 7 is a sensing device, 71 is a first inductor, 72 is a second inductor, 8 is an alarm device, 9 is a control panel, 91 is a start button, 92 is a reset button, 93 is an emergency stop button, and 94 is a touch screen. DETAILED DESCRIPTION

[0029] The utility model discloses a batch head fatigue strength automatic detection device can be used in batch head 1's fatigue strength detection, can realize the automatic multiple repeated fastening screw 11 and loosening screw 11 of batch head 1, thereby complete the fatigue strength detection of batch head 1, can improve batch head fatigue strength detection efficiency, promote detection accuracy.

[0030] The utility model provides a batch head fatigue strength automatic detection device can be used in batch head 1's fatigue strength detection, can realize the automatic multiple repeated fastening screw 11 and loosening screw 11 of batch head 1, thereby complete the fatigue strength detection of batch head 1, can improve batch head fatigue strength detection efficiency, promote detection accuracy.

[0031] As Figure 1 、 Figure 2 、 Figure 3 It is the structure schematic drawing of batch head fatigue strength automatic detection device at different angles, specifically, the batch head fatigue strength automatic detection device includes frame 2 and sets up the fixed assembly 3, test table 4, control assembly 5 and the metering assembly 6 on frame 2, wherein:

[0032] The fixed assembly 3 is adapted to the batch head 1, and can be used to fix the batch head 1. In this embodiment, the batch head 1 is fixedly installed below the fixed assembly 3, and the screw 11 is adsorbed on the batch head 1.

[0033] The test table 4 is located below the fixed assembly 3 and the batch head 1, and the screw hole 41 for testing is arranged on the position adapted to the batch head 1 on the test table 4. The screw hole 41 is adapted to the screw 11 for testing the batch head 1.

[0034] The control assembly 5 can be used to control the rotation and lifting movement of the batch head 1, so as to control the tightening or loosening of the screw 11; for example, downward positive rotation to tighten the screw 11 or upward reverse rotation to loosen the screw 11.

[0035] The counter assembly 6 is electrically connected with the control assembly 5; after tightening the screw 11 downward and then loosening the screw 11 upward, it is a test, and the counter assembly 6 can be used to record the test times of the batch head 1.

[0036] The batch head fatigue strength automatic detection device with the above structure can realize automatic multiple repeated downward tightening and upward loosening of the screw 11 by controlling the rotation and lifting movement of the batch head 1 through the cooperation between the fixing assembly 3, the test table 4, the control assembly 5 and the counter assembly 6, without manual tightening and loosening, which can reduce the labor intensity of the inspector, shorten the detection time, improve the detection efficiency; at the same time, it can also avoid the deviation caused by manual operation, improve the experimental accuracy; in addition, the counter assembly 6 automatically counts once after each tightening and loosening, which can realize automatic recording of the test times, avoid the error of manual statistics, and improve the detection accuracy.

[0037] In some embodiments, the fixing assembly 3 is an electric screwdriver or a pneumatic screwdriver, which can be directly installed with the batch head 1 during detection, which is simple and convenient; the electric screwdriver or the pneumatic screwdriver is provided with a switch component 31 and a direction adjusting component 32; wherein the switch component 31 can control the batch head 1 to start or stop rotating and lifting movement, and the direction adjusting component 32 can adjust the rotation direction of the batch head 1, for example, to make the batch head 1 rotate positively or reversely; the control assembly 5 includes a first control component 51 and a second control component 52, wherein the first control component 51 can control the switch component 31 to turn on or off, and the second control component 52 can drive the direction adjusting component 32 to adjust, for example, to control the direction adjusting component 32 to adjust the rotation direction from positive rotation to reverse rotation, or to control the direction adjusting component 32 to adjust the rotation direction from reverse rotation to positive rotation.

[0038] The automatic detection device for the fatigue strength of the bit head has the electric screwdriver or the pneumatic screwdriver as the fixing assembly 3, so that the installation of the bit head 1 is simple, fast, convenient, flexible and universal, and can be suitable for detection of more different bit heads 1; the switch component 31, the direction adjusting component 32, the first control component 51 and the second control component 52 are matched with each other, so that the rotation and the lifting movement of the bit head 1 can be quickly, stably and reliably controlled, and the screw 11 can be repeatedly and automatically tightened downward and loosened upward.

[0039] In some embodiments, as shown in Figure 2 the switch component 31 is a normally closed switch button (the normally closed switch button refers to a switch component that is closed when the button is pressed, and the equipment starts to act, and is disconnected when the button is released, and the equipment stops acting); in this embodiment, the normally closed switch button can control the bit head 1 to start rotating and lifting when being pressed, and can control the bit head 1 to stop rotating and lifting when being released; the first control component 51 is a linear cylinder, which can move linearly along the direction in which the normally closed switch button is pressed or released, and can move away from or close to the normally closed switch button, so as to control the pressing and releasing of the normally closed switch button.

[0040] In the above structure of the automatic detection device for the fatigue strength of the bit head, when the bit head 1 needs to be controlled to rotate downward to tighten the screw 11 or to rotate upward to loosen the screw 11, the first control component 51 approaches the normally closed switch button until the normally closed switch button is pressed, and the normally closed switch button is maintained in the pressed state, so that the electric screwdriver or the pneumatic screwdriver is in the state of starting and continuously acting; when the rotating direction needs to be adjusted, for example, the rotating direction is adjusted from the forward rotation to the reverse rotation, or the rotating direction is adjusted from the reverse rotation to the forward rotation, the first control component 51 moves away from the normally closed switch button until the normally closed switch button is released, so that the electric screwdriver or the pneumatic screwdriver is in the state of stopping, so as to adjust the rotating direction; the switch of the normally closed switch button is controlled by the linear cylinder, so that the structure is simple, stable and reliable.

[0041] In some embodiments, as shown in Figure 2 the direction adjusting component 32 is a reversing knob, and different positions of the reversing knob can correspond to control of the forward and reverse rotations of the bit head 1, for example, the left position corresponds to the forward rotation, and the right position corresponds to the reverse rotation, and of course, the reverse rotation can also be the forward rotation, which is not limited here; the second control component 52 is a rotary cylinder, which can control the rotation of the reversing knob through the rotary movement, so as to switch the rotating direction of the bit head 1.

[0042] The batch head fatigue strength automatic detection device with the above structure can quickly switch the rotating direction of the batch head 1 by rotating the rotating cylinder to different positions, and is simple in structure and stable and reliable.

[0043] In some embodiments, as shown in Figure 5 The test plate 42 is horizontally arranged above the support base 43 and is relatively fixed on the support base 43 (the relative fixation means not absolute or complete fixation, in some cases, the test plate 42 can be disassembled or its position is adjusted and then fixed on the support base 43 again), preferably, the test plate 42 is a hot-dip galvanized plate, which is more wear-resistant and durable, stable and reliable. The support base 43 is fixed on the rack 2, and the distance between the test plate 42 and the top of the support base 43 is adapted to the length of the screw 11, that is, the space between the test plate 42 and the support base 43 can accommodate the screw 11 when the screw 11 is completely screwed down.

[0044] The batch head fatigue strength automatic detection device with the above structure is fixed on the rack 2, the test plate 42 is horizontally arranged on the support base 43, the screw hole 41 is arranged on the test plate 42, and the space between the test plate 42 and the support base 43 can accommodate the screw 11 when the screw 11 is completely screwed down, so that the batch head fatigue strength automatic detection device is more stable and reliable.

[0045] In some embodiments, the test plate 42 is provided with at least two screw holes 41, preferably a plurality of screw holes; the test plate 42 can move laterally on the support base 43, which can be left-right movement, forward-backward movement, or simultaneous forward-backward and left-right movement, depending on the distribution of the screw holes 41, which is not limited here.

[0046] The batch head fatigue strength automatic detection device with the above structure is provided with at least two screw holes 41 on the test plate 42, and the test plate 42 can move laterally on the support base 43. When a single screw hole 41 is worn due to excessive test times, affecting the test accuracy, the test plate 42 can be moved to use a new screw hole 41 for testing without replacing the test plate 42, which can improve the reliability and flexibility of the batch head fatigue strength automatic detection device.

[0047] In some embodiments, the test plate 42 is provided with a sliding groove 421, and the support seat 43 is provided with a sliding column 431 which is adapted to the sliding groove 421 and can slide in the sliding groove 421, so as to realize the horizontal movement of the test plate 42; the sliding column 431 is further provided with a locking component (not shown in the figure), which can prevent the sliding column 431 from continuing to slide on the sliding groove 421, so that the sliding column 431 is fixed on the sliding groove 421; preferably, as shown in the embodiment, the sliding groove 421 is provided with two, which are arranged in parallel in front of and behind the test plate 42 respectively, and the sliding column 431 on each sliding groove 421 is three, which are uniformly distributed at intervals, so that the sliding effect is better and more stable.

[0048] The batch head fatigue strength automatic detection device with the above structure realizes the horizontal movement of the test plate 42 through the sliding groove 421, the sliding column 431 and the locking component, which is simple in structure, stable and reliable, and convenient for subsequent maintenance and replacement.

[0049] In some embodiments, the test table 4 is provided with a horizontal movement automatic control system; the at least two screw holes 41 are arranged in a straight line and uniformly spaced on the test plate 42, for example, arranged in a row or a column; the distance between the adjacent two screw holes 41 is set as A, and the horizontal movement automatic control system can control the test plate 42 to automatically move horizontally by A distance each time, without manual operation and adjustment, so as to directly and automatically change to the next screw hole 41.

[0050] The batch head fatigue strength automatic detection device with the above structure can directly and automatically change to the next screw hole 41 through the horizontal movement automatic control system, realize one-key operation, automatic alignment, replace manual movement and repeated calibration, and has better efficiency, is convenient and fast, and has good operability.

[0051] In some embodiments, as shown in the figure, Figure 4As shown, the chuck fatigue strength automatic detection device further comprises a sensing device 7 and an alarm device 8, and the sensing device 7 is electrically connected with the control assembly 5 and the alarm device 8; specifically, the sensing device 7 comprises a first inductor 71 and a second inductor 72; wherein the first inductor 71 is located at the side of the bottom of the screw hole 41, and in this embodiment, it is located on the bottom of the test plate 42; the second inductor 72 is located below the first inductor 71, and when the screw 11 is tightened on the screw hole 41, the tail end of the screw 11 is located at the same horizontal plane as the second inductor 72; the first inductor 71 and the second inductor 72 can respectively detect the presence of the screw 11 on the horizontal plane where they are located, and send a signal feedback to the control assembly 5 for continuous action, or send a signal feedback to the alarm device 8 to start the alarm, and the buzzer will sound and the red light of the alarm lamp will flash at the same time; of course, when the detection process is abnormal and the chuck 1 cannot act, the alarm device 8 will also be triggered.

[0052] The chuck fatigue strength automatic detection device with the above structure, when in use, the screw 11 moves downward (tightens) and will block the first inductor 71 and the second inductor 72 in turn, when the second inductor 72 senses the blocking of the screw 11, it sends a signal feedback to the control assembly 5 to adjust the action of the chuck 1 from tightening to loosening, at this time the screw 11 moves upward and will move away from the horizontal plane where the second inductor 72 and the first inductor 71 are located in turn, when the first inductor 71 senses that the screw is detached (i.e. the first inductor 71 cannot detect the presence of the screw 11 on the horizontal plane where it is located), it sends a signal feedback to the control assembly 5 to adjust the action of the chuck 1 from loosening to tightening, and so on, to realize the automatic tightening and loosening action of the chuck 1; when the second inductor 72 does not sense the blocking of the screw 11 for more than a set time, or the first inductor 71 does not sense the detachment of the screw 11 for more than a set time, it sends a signal feedback to the alarm device 8 to trigger the alarm and remind the experimental personnel to investigate on site; thereby the intelligence, reliability and safety of the chuck fatigue strength automatic detection device can be improved.

[0053] In some embodiments, the chuck fatigue strength automatic detection device further comprises a control panel 9, which comprises a start button 91, a reset button 92, an emergency stop button 93 and a touch screen 94; in operation, only the corresponding function buttons need to be pressed, or the touch screen 94 is set, to start the related function, which is simple and convenient to operate.

[0054] The above embodiments are only preferred embodiments of the present application, and do not limit the scope of the present application, and equivalent changes made according to the shape, structure and principle of the present application should be covered in the protection scope of the present application.

Claims

1. An automatic fatigue strength testing device for screwdriver bits, characterized in that, It includes a frame (2) and a fixing component (3) mounted on the frame (2), a test bench (4), a control component (5) and a counting component (6); The fixing component (3) is adapted to the cape (1) and can be used to fix the cape (1); The test platform (4) is located below the tassel (1), and the test platform (4) is provided with screw holes (41) for testing, the screw holes (41) being adapted to the screws (11) used for testing the tassel (1); The control component (5) can be used to control the rotation and lifting motion of the cape (1); The counting component (6) is electrically connected to the control component (5) and can be used to record the number of times the screw (1) tightens the screw (11) downwards and then loosens the screw (11) upwards.

2. The automatic fatigue strength testing device for screwdriver bits according to claim 1, characterized in that, The fixing component (3) is an electric screwdriver or a pneumatic screwdriver, and the fixing component (3) is provided with a switch component (31) and a direction adjustment component (32); the switch component (31) can control the head (1) to start or stop rotating and lifting; The direction adjustment component (32) can adjust the rotation direction of the cape (1); the control component (5) includes a first control component (51) and a second control component (52), the first control component (51) can control the switching of the switch component (31), and the second control component (52) can drive the direction adjustment component (32) to make adjustments.

3. The automatic fatigue strength testing device for screwdriver bits according to claim 2, characterized in that, The switch component (31) is a normally closed switch button. When the normally closed switch button is pressed, it can control the head (1) to start rotating and lifting. When it is released, it can control the head (1) to stop rotating and lifting. The first control component (51) is a linear cylinder, which can control the pressing and releasing of the normally closed switch button through linear motion.

4. The automatic fatigue strength testing device for screwdriver bits according to claim 2, characterized in that, The direction adjustment component (32) is a reversing knob, which can control the forward and reverse rotation of the headpiece (1) by turning the knob to different positions; the second control component (52) is a rotary cylinder, which can control the rotation of the reversing knob by rotational movement.

5. The automatic fatigue strength testing device for screwdriver bits according to claim 1, characterized in that, The test bench (4) includes a test plate (42) and a support base (43); the screw hole (41) is provided on the test plate (42), the test plate (42) is placed flat on the support base (43), the support base (43) is fixed on the frame (2), and the distance between the top of the test plate (42) and the support base (43) is adapted to the length of the screw (11).

6. The automatic fatigue strength testing device for screwdriver bits according to claim 5, characterized in that, The test plate (42) is provided with at least two screw holes (41), and the test plate (42) can move laterally on the support base (43).

7. The automatic fatigue strength testing device for screwdriver bits according to claim 6, characterized in that, The test plate (42) is provided with a slide groove (421), and the support base (43) is provided with a slide post (431) that is adapted to the slide groove (421) and can slide on the slide groove (421). The slide post (431) is also provided with a locking component that can prevent the slide post (431) from sliding on the slide groove (421).

8. The automatic fatigue strength testing device for screwdriver bits according to claim 6, characterized in that, The test bench (4) is equipped with a transverse automatic control system; the at least two screw holes (41) are evenly spaced along a straight line on the test plate (42); the transverse automatic control system can control the test plate (42) to automatically move the distance between the two screw holes (41) each time.

9. The automatic fatigue strength testing device for screwdriver bits according to claim 1, characterized in that, It also includes a sensing device (7) and an alarm device (8); the sensing device (7) is electrically connected to the control component (5) and the alarm device (8); the sensing device (7) includes a first sensor (71) and a second sensor (72), the first sensor (71) is located on the side of the bottom of the screw hole (41), and the second sensor (72) is located below the first sensor (71). When the screw (11) is tightened in the screw hole (41), the tail end of the screw (11) and the second sensor (72) are on the same horizontal plane; the first sensor (71) and the second sensor (72) can respectively detect the presence of the screw (11) on their respective horizontal planes, and send a signal to the control component (5) to continue the operation or to the alarm device (8) to start the alarm according to the detection situation.

10. The automatic fatigue strength testing device for screwdriver bits according to claim 1, characterized in that, It also includes a control panel (9), which includes a start button (91), a reset button (92), an emergency stop button (93), and a touch screen (94).

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