Bolt and nut matching precision testing device

Abstract

The utility model discloses a bolt and nut matching precision testing device, which belongs to the field of bolt and nut testing devices and comprises a base, upright posts are arranged at four corners of the base, a console is fixedly mounted on one side of the base, and two symmetrically distributed grooves are formed in the top end of the base. Two grooves are formed in the base, a first conveying belt and a second conveying belt are arranged in the two grooves correspondingly, multiple sets of limiting frames distributed in a linear array mode are arranged on the first conveying belt, the number of the limiting frames in the same set is at least five, the limiting frames are located on the first conveying belt and distributed in a linear array mode, and a clamping assembly is arranged at the top of the base. According to the utility model, the clamping assembly is arranged to clamp and fix a bolt, and the testing assembly is arranged to cooperate with a plurality of torque wrenches, a transparent tube, a mounting cylinder, a second gear motor, a driving gear and a driven gear, so that a plurality of bolts and nuts can be detected at the same time, and the detection efficiency of equipment can be improved.

Description

Technical Field

[0001] This utility model relates to the field of bolt and nut testing devices, and more specifically, to a bolt and nut matching accuracy testing device. Background Technology

[0002] A bolt is a mechanical part, a cylindrical threaded fastener that is fitted with a nut. It is a type of fastener consisting of a head and a threaded shank. It needs to be used with a nut to fasten two parts with through holes. This type of connection is called a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated. During the production of bolts and nuts, it is usually necessary to test the matching accuracy between the bolt and the nut.

[0003] Existing methods for testing bolt and nut matching accuracy involve manually rotating the nut to fit its threads onto the bolt, then manually checking the smoothness of the thread engagement to assess the matching accuracy. However, this method is inefficient and reduces the overall testing efficiency for bolt and nut matching accuracy. Therefore, we propose a bolt and nut matching accuracy testing device. Utility Model Content

[0004] To solve the above problems, this utility model provides a bolt and nut matching accuracy testing device, which adopts the following technical solution:

[0005] A bolt and nut matching accuracy testing device includes a base with columns at each of its four corners. A control console is fixedly installed on one side of the base. Two symmetrically distributed grooves are formed at the top of the base, each containing a first conveyor belt and a second conveyor belt. Multiple sets of limit frames arranged in a linear array are provided on the first conveyor belt, with at least five limit frames in each set arranged in a linear array. A clamping assembly is provided at the top of the base. A scanner is also provided at the top of the base. A support plate with an inverted "L" shaped cross-section is fixedly installed at the top of the base. A support box is provided at the bottom of the horizontal section of the support plate. A support block is slidably installed within the support box, with its top end sliding through the support box. A first cylinder is fixedly installed at the bottom of the support block. A connecting frame is provided at the piston shaft end of the first cylinder. A mounting plate is provided at the bottom of the connecting frame. A mounting groove is formed at the top of the mounting plate. A testing assembly is provided at the bottom of the mounting plate. A driving assembly is provided between the support block and the support box.

[0006] By adopting the above technical solution, when using this equipment, the operator places the bolt above the base and clamps and fixes it using the clamping assembly. Then, the operator places the nut inside the limiting frame installed on the first conveyor belt. The limiting frame serves to restrict and position the nut. After the nut is placed, it is conveyed towards the bolt via the first conveyor belt. Then, the drive assembly drives the support block to slide within the support box. The support block, carrying the testing assembly, moves above the nut. The testing assembly removes the nut and moves it onto the bolt. The testing assembly drives the nut to rotate and fit onto the bolt sidewall, thus measuring the smoothness between the nut and bolt. This serves to detect the matching accuracy between the nut and bolt. A scanner is installed above the base to detect and scan the thread smoothness between the nut and bolt. After a batch of nuts has been tested, the drive assembly moves the nuts to the second conveyor belt, where they fall and are conveyed away. The above operation can then be repeated, which helps to improve the efficiency of detecting the matching accuracy between nuts and bolts.

[0007] Furthermore, the clamping assembly includes two movable plates slidably mounted on the top of the base. Multiple clamping frames arranged in a linear array are fixedly installed between the opposite sides of the two movable plates. Two sets of symmetrically distributed second cylinders are fixedly installed at the top of the base. There are two second cylinders in the same set, and the piston shaft ends of the two second cylinders in the same set are fixedly connected to the opposite side of the movable plate on the same side.

[0008] By adopting the above technical solution, the staff places the bolts on the base, and then drives the moving plate and clamping frame on the same side to move through the second cylinder. The cooperation of the two sets of clamping frames can clamp and fix the bolts, which is convenient for subsequent testing.

[0009] Furthermore, the test assembly includes multiple mounting cylinders fixedly installed at the bottom of the mounting plate. Each mounting cylinder has a transparent tube rotatably connected to its bottom end. Each transparent tube has a torque wrench fixedly installed at its bottom end. Each torque wrench has an anti-slip pad inside. Each transparent tube has a driven gear fixedly sleeved on its top sidewall. Multiple support blocks arranged in a linear array are fixedly installed in the mounting groove. Each support block has a first reduction motor at its bottom end. Each first reduction motor has a drive gear fixedly sleeved on its output shaft sidewall. The drive gear meshes with the driven gear on the same side. Each mounting cylinder has a discharge assembly.

[0010] By adopting the above technical solution, after the bolt is clamped, the worker sets a constant value for the torque wrench. The support block moves the torque wrench above the first conveyor belt. The first cylinder drives the connecting frame and mounting plate to descend synchronously. The mounting plate, along with the mounting cylinder, transparent tube, and torque wrench, descends synchronously. The torque wrench is then placed against the side wall of the nut on the same side, thus removing the nut. The torque wrench has an anti-slip pad inside, which helps improve the stability of the engagement between the nut and the torque wrench. After the nut is removed, the support block drives the torque wrench to move the nut above the bolt on the same side. Then, the first cylinder drives the nut to descend continuously, and the first reduction motor drives the drive gear on the same side to rotate, driving... The gear drives the driven gear on the same side to rotate, the driven gear drives the transparent tube on the same side to rotate, and the transparent tube drives the torque wrench and the nut on the same side to rotate, thereby engaging the nut and bolt. The torque generated by the torque wrench is used to test the smoothness of the bolt and nut engagement. The operator can electrically connect the warning light in the existing technology to the torque wrench. When a blockage is felt when the nut and bolt are engaged, the value generated by the torque wrench will exceed the constant value, and the warning light will sound an alarm, allowing the operator to notice in time and remove the nut. After the nut is tested, the support block drives the nut to move above the second conveyor belt, and then the unloading assembly pushes the torque wrench down onto the second conveyor belt, thus achieving the unloading function.

[0011] Furthermore, the unloading assembly includes a telescopic rod fixedly installed on the inner wall of the top of the mounting cylinder, and a push block is fixedly installed at the bottom end of each telescopic rod.

[0012] By adopting the above technical solution, the telescopic rod drives the push block on the same side, and the push block pushes the nut, so that the nut push torque wrench can be dropped onto the second conveyor belt to achieve the unloading effect.

[0013] Furthermore, the drive assembly includes a screw rotatably mounted in a support box, a support block sleeved on the side wall of the screw, an mounting box fixedly mounted on one side of the support box, a second geared motor fixedly mounted inside the mounting box, one end of the screw penetrating the support box and extending into the mounting box, and the end of the screw penetrating the mounting box being fixedly connected to the end of the output shaft of the second geared motor.

[0014] By adopting the above technical solution, the screw is driven to rotate by the second reduction motor, and the screw drives the support block to move inside the support box. The torque wrench is then moved by the support block, which can adjust the position of the torque wrench and facilitate material handling.

[0015] Furthermore, sliders are fixedly installed on both sides of the support block, and the inner wall of the support box is provided with a groove that matches the slider.

[0016] By adopting the above technical solution, when the support block slides inside the support box, the support block slides with the slider in the same side groove. The cooperation between the slider and the groove helps to maintain the stability of the support block's sliding.

[0017] Furthermore, mounting seats are fixedly installed on both sides of the base, and the two mounting seats are located on both sides of the second conveyor belt. The top of each of the two mounting seats is equipped with a robotic arm, and the end of each of the two robotic arms is equipped with a gripper.

[0018] By adopting the above technical solution, unqualified nuts are detected by scanning with a scanner. The nuts are placed on the second conveyor belt, and the grippers on the same side can be driven by a robotic arm to pick out the unqualified nuts, thus achieving the sorting function.

[0019] In summary, this utility model has the following beneficial technical effects:

[0020] (1) In this utility model, the clamping component is used to clamp and fix the bolts. The test component is used to cooperate with multiple torque wrenches, transparent tubes, mounting cylinders, second reduction motors, drive gears and driven gears to facilitate the simultaneous testing of multiple bolts and nuts, which is beneficial to improving the testing efficiency of the equipment.

[0021] (2) In this utility model, by setting up the unloading component, after some nuts are detected, the drive component drives the support block to move the nuts to the top of the second conveyor belt, and then drives the push block on the same side to descend by the telescopic rod. The push block pushes the nuts on the same side, so that the nuts are released from the torque wrench, thus achieving the unloading function. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This utility model Figure 1 Enlarged view of A in the middle;

[0024] Figure 3 This utility model Figure 1 Enlarged view of B in the middle;

[0025] Figure 4 This is a cross-sectional view of the present invention;

[0026] Figure 5 This utility model Figure 4 Enlarged view of C;

[0027] Figure 6 This is an exploded view of the test component in this utility model.

[0028] Explanation of the labels in the diagram:

[0029] 1. Base; 2. Groove; 3. First conveyor belt; 4. Limiting frame; 5. Torque wrench; 6. Transparent tube; 7. Connecting frame; 8. First cylinder; 9. Support box; 10. Support plate; 11. Mounting box; 12. Gripper; 13. Robotic arm; 14. Second conveyor belt; 15. Mounting seat; 16. Scanner; 17. Mounting plate; 18. First geared motor; 19. Drive gear; 20. Driven gear; 21. Mounting cylinder; 22. Second cylinder; 23. Moving plate; 24. Clamping frame; 25. Screw; 26. Support block; 27. Second geared motor; 28. Support block; 29. ​​Telescopic rod; 30. Push block; 31. Mounting groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0034] Please see Figure 1-6A bolt and nut matching accuracy testing device includes a base 1, with columns at each of the four corners of the base 1. A control console is fixedly installed on one side of the base 1. Two symmetrically distributed grooves 2 are formed at the top of the base 1. A first conveyor belt 3 and a second conveyor belt 14 are respectively installed in the two grooves 2. Multiple sets of limit frames 4 arranged in a linear array are provided on the first conveyor belt 3, with at least five limit frames 4 in each set arranged in a linear array. A clamping assembly is provided at the top of the base 1, including two movable plates 23 slidably mounted on the top of the base 1. Multiple clamping frames 24 arranged in a linear array are fixedly installed on opposite sides of the moving plate 23. Two sets of second cylinders 22 arranged symmetrically are fixedly installed on the top of the base 1. There are two second cylinders 22 in the same set. The piston shaft ends of the two second cylinders 22 in the same set are fixedly connected to the opposite side of the moving plate 23 on the same side. When the equipment is in use, the operator places the bolt on the base 1, and then drives the moving plate 23 and clamping frames 24 on the same side to move through the second cylinders 22. Through the cooperation of the two sets of clamping frames 24, the bolt can be clamped and fixed, which is convenient for subsequent testing.

[0035] A scanner 16 is mounted on the top of the base 1. A support plate 10 is fixedly installed on the top of the base 1. The support plate 10 has an inverted "L" shaped cross-section. A support box 9 is located at the bottom of the horizontal section of the support plate 10. A support block 26 is slidably installed inside the support box 9. The top of the support block 26 slides through the support box 9. A first cylinder 8 is fixedly installed at the bottom of the support block 26. A connecting bracket 7 is located at the piston shaft end of the first cylinder 8. A mounting plate 17 is located at the bottom of the connecting bracket 7. A mounting groove 31 is opened at the top of the mounting plate 17. A test assembly is located at the bottom of the mounting plate 17. The test assembly includes multiple... A mounting cylinder 21 is fixedly installed at the bottom of the mounting plate 17. A transparent tube 6 is rotatably connected to the bottom of the mounting cylinder 21. A torque wrench 5 is fixedly installed at the bottom of the transparent tube 6. The torque wrench 5 is provided with an anti-slip pad inside. A driven gear 20 is fixedly sleeved on the top side wall of the transparent tube 6. Multiple support blocks 28 arranged in a linear array are fixedly installed in the mounting groove 31. A first reduction motor 18 is provided at the bottom of the support block 28. A drive gear 19 is fixedly sleeved on the side wall of the output shaft of the first reduction motor 18. The drive gear 19 meshes with the driven gear 20 on the same side.

[0036] After the bolt is clamped, the worker sets the torque wrench 5 to a constant value. The support block 26 moves the torque wrench 5 above the first conveyor belt 3. The first cylinder 8 drives the connecting frame 7 and the mounting plate 17 to descend synchronously. The mounting plate 17, along with the mounting cylinder 21, the transparent tube 6, and the torque wrench 5, descends synchronously. The torque wrench 5 is then fitted onto the side wall of the nut on the same side, allowing the nut to be removed. The torque wrench 5 has an anti-slip pad inside, which helps improve the stability of the engagement between the nut and the torque wrench 5. After the nut is removed, the support block 26 drives the torque wrench 5 to move the nut above the bolt on the same side, and then the first cylinder 8 drives... The moving nut descends continuously and drives the same-side drive gear 19 to rotate via the first reduction motor 18. The drive gear 19 drives the same-side driven gear 20 to rotate, which in turn drives the same-side transparent tube 6 to rotate. The transparent tube 6 drives the same-side torque wrench 5 and the same group of nuts to rotate, thereby engaging the nut and bolt. The torque generated by the torque wrench 5 is used to detect the smoothness of the bolt and nut engagement. The operator can electrically connect the warning light in the existing technology to the torque wrench 5. When a blocking sensation occurs when the nut and bolt are engaged, the value generated by the torque wrench 5 will exceed a constant value, and the warning light will sound an alarm, allowing the operator to notice in time and remove the nut.

[0037] Each mounting cylinder 21 is equipped with a material unloading assembly. The material unloading assembly includes a telescopic rod 29 fixedly installed on the inner wall of the top of the mounting cylinder 21. Each telescopic rod 29 has a push block 30 fixedly installed at its bottom. The telescopic rod 29 drives the push block 30 on the same side, and the push block 30 pushes the nut, so that the nut push torque wrench 5 can fall onto the second conveyor belt 14 to achieve the effect of unloading.

[0038] A drive assembly is provided between the support block 26 and the support box 9. The drive assembly includes a screw 25 rotatably installed inside the support box 9. The support block 26 is sleeved on the side wall of the screw 25. An installation box 11 is fixedly installed on one side of the support box 9. A second reduction motor 27 is fixedly installed inside the installation box 11. One end of the screw 25 passes through the support box 9 and extends into the installation box 11. The end of the screw 25 passing through the installation box 11 is fixedly connected to the end of the output shaft of the second reduction motor 27. The second reduction motor 27 drives the screw 25 to rotate, and the screw 25 drives the support block 26 to move within the support box 9. The support block 26 drives the torque wrench 5 to move, which can adjust the position of the torque wrench 5, making it convenient for picking up and putting down materials. Slider blocks are fixedly installed on both sides of the support block 26. The inner wall of the support box 9 has a sliding groove that matches the slider. When the support block 26 slides within the support box 9, the support block 26 slides with the slider in the same side sliding groove. The cooperation between the slider and the sliding groove helps to maintain the stability of the sliding of the support block 26.

[0039] Mounting seats 15 are fixedly installed on both sides of the base 1. The two mounting seats 15 are located on both sides of the second conveyor belt 14. The top of each mounting seat 15 is equipped with a robotic arm 13. The end of each robotic arm 13 is equipped with a gripper 12. The unqualified nuts are detected by scanning with a scanner 16. The nuts are placed on the second conveyor belt 14. The robotic arm 13 can drive the gripper 12 on the same side to pick out the unqualified nuts, thus achieving the sorting function.

[0040] The implementation principle of this utility model embodiment is as follows: When using the equipment, the operator places the bolt above the base 1 and clamps and fixes the bolt using the clamping assembly. Then, the operator places the nut in the limiting frame 4 installed on the first conveyor belt 3. The limiting frame 4 can restrict and position the nut. After the nut is placed, it is conveyed towards the bolt by the first conveyor belt 3. Then, the support block 26 is driven to slide in the support box 9 by the drive assembly. The support block 26 moves with the test assembly to the top of the nut. The nut is removed by the test assembly and then moved to the bolt. The nut is driven to rotate by the test assembly and fits onto the side wall of the bolt on the same side. This can achieve the function of smoothness between the nut and the bolt, thereby detecting the matching accuracy between the nut and the bolt. A scanner 16 is provided above the base 1, which can detect and scan the thread smoothness between the nut and the bolt. After a batch of nuts is tested, the nuts are driven to move above the second conveyor belt 14 by the drive assembly. Then, the nuts fall onto the second conveyor belt 14 and are conveyed away. The above operation can be repeated, which helps to improve the detection efficiency of the matching accuracy between the nut and the bolt.

[0041] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A bolt nut matching precision testing device, comprising a base (1), characterized in that: The base (1) is provided with a stand on each corner, a control console is fixedly installed on one side of the base (1), two recesses (2) are formed in the top of the base (1), a first conveying belt (3) and a second conveying belt (14) are respectively arranged in the two recesses (2), a plurality of limiting frames (4) are arranged on the first conveying belt (3) in a linear array, the limiting frames (4) in the same group are at least five and are arranged in a linear array on the first conveying belt (3), a clamping assembly is arranged on the top of the base (1), a scanner (16) is arranged on the top of the base (1), a support plate (10) is fixedly installed on the top of the base (1), the support plate (10) is in an inverted "L" shape, a support box (9) is arranged on the horizontal section of the support plate (10), a support block (26) is slidably installed in the support box (9), the support block (26) slidably penetrates through the support box (9), a first air cylinder (8) is fixedly installed on the bottom end of the support block (26), a connecting frame (7) is arranged on the piston shaft end of the first air cylinder (8), an installation plate (17) is arranged on the bottom end of the connecting frame (7), an installation groove (31) is formed in the top of the installation plate (17), a testing assembly is arranged on the bottom of the installation plate (17), and a driving assembly is arranged between the support block (26) and the support box (9).

2. The bolt and nut matching precision testing device according to claim 1, characterized in that: The clamping assembly comprises two moving plates (23) slidably installed on the top of the base (1), a plurality of clamping frames (24) are fixedly installed between the opposite sides of the two moving plates (23) in a linear array, two groups of second air cylinders (22) are fixedly installed on the top of the base (1) in a symmetrical manner, the second air cylinders (22) in the same group are two, and the piston shaft ends of the two second air cylinders (22) in the same group are fixedly connected with the opposite sides of the moving plates (23) on the same side.

3. The bolt and nut matching precision testing device according to claim 1, characterized in that: The testing assembly comprises a plurality of installation cylinders (21) fixedly installed on the bottom end of the installation plate (17), a transparent tube (6) is rotatably connected to the bottom end of each installation cylinder (21), a torque wrench (5) is fixedly installed on the bottom end of each transparent tube (6), an anti-slip pad is arranged in each torque wrench (5), a driven gear (20) is fixedly sleeved on the top end side wall of each transparent tube (6), a plurality of supporting blocks (28) are fixedly installed in the installation groove (31) in a linear array, a first speed reducer motor (18) is arranged on the bottom end of each supporting block (28), a driving gear (19) is fixedly sleeved on the side wall of the output shaft of each first speed reducer motor (18), the driving gear (19) is engaged with the driven gear (20) on the same side, and a discharging assembly is arranged in each installation cylinder (21).

4. The bolt and nut matching precision testing device according to claim 3, characterized in that: The discharging assembly comprises a telescopic rod (29) fixedly installed on the inner wall of the top end of the installation cylinder (21), and a pushing block (30) is fixedly installed on the bottom end of the telescopic rod (29).

5. The bolt and nut matching precision testing device according to claim 1, characterized in that: The driving assembly comprises a screw rod (25) rotatably installed in a supporting box (9), a supporting block (26) sleeved on the side wall of the screw rod (25), a mounting box (11) fixedly installed on one side of the supporting box (9), a second speed reducer (27) fixedly installed in the mounting box (11), and one end of the screw rod (25) penetrating through the supporting box (9) and extending into the mounting box (11), and the other end of the screw rod (25) fixedly connected with the output shaft end of the second speed reducer (27).

6. The bolt and nut matching precision testing device according to claim 1, characterized in that: Both sides of the supporting block (26) are fixedly installed with sliding blocks, and the inner wall of the supporting box (9) is provided with sliding grooves matched with the sliding blocks.

7. The bolt and nut matching precision testing device according to claim 1, characterized in that: Both sides of the base (1) are fixedly installed with mounting seats (15), two mounting seats (15) are located on both sides of the second conveying belt (14), the top ends of the two mounting seats (15) are provided with mechanical arms (13), and the end portions of the two mechanical arms (13) are provided with clamping jaws (12).

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