A thread detection device

Abstract

The present invention belongs to the field of thread detection, specifically a thread detection device, including a fixed base, an upper limit sliding connection of the fixed base is provided with a mounting plate, a positioning drive assembly is installed at the bottom end of the mounting plate, a scale and a storage box are welded and fixed on the top end surface of the fixed base, a servo motor is welded and fixed on the side end surface of the mounting plate, a second fixed frame is welded and fixed on the connecting plate, a clamping positioning assembly is installed in both the first and second fixed frames, a through hole is penetrated through the top of the storage box, an adjustable automatic marking assembly is installed in the storage box, which solves the problems that the existing threaded hole detection method is difficult to realize the automation and high efficiency of internal thread detection work, the detection cost is high, and at the same time, the qualification of the internal thread cannot be accurately and intuitively observed, and it is not convenient to automatically and stably mark the qualified workpieces to be detected.

Description

Technical Field

[0001] The invention relates to the field of thread detection, in particular to a thread detection device. Background Art

[0002] In mechanical processing, threads are cut on a cylindrical shaft or inner hole surface with a tool or grinding wheel. At this time, the workpiece rotates and the tool moves a certain distance along the axial direction of the workpiece. The traces cut by the tool on the workpiece are threads. The threads formed on the outer surface are called external threads, and the threads formed on the inner hole surface are called internal threads. Since the internal threads are inside the parts, it is not easy to observe. Therefore, after the internal threads are processed, the staff needs to use a thread gauge to perform tapping detection;

[0003] The traditional method of threaded hole detection is mainly to manually use a handheld thread gauge to perform tapping detection on the threaded holes. Since the workpieces to be tested are mass-produced by machines in large quantities, a large amount of manpower and material resources are required to detect the workpieces to be tested, and it is difficult to achieve automation and high efficiency in internal thread detection, and the detection cost is high. At the same time, when the staff uses the thread gauge to perform tapping detection on the threaded holes, they cannot accurately and intuitively observe the qualification of the internal threads, and it is not convenient to automatically and stably mark the workpieces to be tested that have passed the inspection. Moreover, during long-term work, the staff is very likely to make mistakes in the inspection due to labor fatigue. Therefore, it is necessary to provide a thread detection equipment to meet the needs of users. Summary of the invention

[0004] In view of the problems existing in the existing thread detection equipment, the present invention is proposed.

[0005] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions: a thread detection device, comprising a fixed base, an upper limit sliding connection of the fixed base is provided with a mounting plate, a positioning drive assembly is installed at the bottom end of the mounting plate, a scale and a storage box are welded and fixed on the top end surface of the fixed base, a servo motor is welded and fixed on the side end surface of the mounting plate, a first fixed frame is welded and fixed on the output shaft of the servo motor, a first threaded rod is rotatably connected to the top end surface of the fixed base, a transmission belt is connected to the bottom of the first threaded rod, a connecting plate is screwed on the first threaded rod, a second fixed frame is welded and fixed on the connecting plate, a clamping positioning assembly is installed in both the first fixed frame and the second fixed frame, a through hole is opened through the top of the storage box, and an adjustable automatic marking assembly is installed in the storage box.

[0006] As a preferred solution of a thread detection device described in the present invention, the positioning drive assembly includes a magnetic plate, the magnetic plate is welded and fixed on the bottom side end surface of the mounting plate, a connecting push rod is screwed on the magnetic plate, the connecting push rod is limitedly slidably connected to the fixed base, a magnetic ring is screwed inside the fixed base, a fixed spring is welded and fixed on the bottom side end surface of the mounting plate, and the other end of the fixed spring is welded and fixed in the fixed base.

[0007] As a preferred solution of a thread detection device described in the present invention, wherein: the diameter of the connecting push rod is smaller than the inner diameter of the magnetic ring, the outer diameter of the magnetic ring is equal to the diameter of the magnetic plate, and the magnetic attraction between the magnetic plate and the magnetic ring is greater than the elastic force of the fixed spring.

[0008] As a preferred solution of a thread detection device described in the present invention, wherein: the clamping and positioning assembly includes a worm, and the worm is rotationally connected to the first fixed frame and the second fixed frame, the worm is meshed with a worm wheel, and the worm wheel is welded and fixed on the fixed shaft, and the fixed shaft is rotatably connected in the first fixed frame and the second fixed frame, a first circular gear is welded and fixed on the fixed shaft, a second circular gear is meshed with the first circular gear, and a gear rod is meshed with the second circular gear, and the gear rod is limitedly slidably connected to the first fixed frame and the second fixed frame, a connecting plate is welded and fixed on the top surface of the gear rod, a clamping plate is welded and fixed on the connecting plate, and a rubber pad is meshed and connected on the clamping plate.

[0009] As a preferred solution of a thread detection device described in the present invention, wherein: the worm gear is respectively connected to the inner center part of the first fixed frame and the inner center part of the second fixed frame, the second circular gear is distributed at equal angles on the first circular gear, the second circular gear corresponds one-to-one with the clamping plate through the connecting plate on the gear rod, and the connecting plate is fixed at the bottom middle part of the clamping plate.

[0010] As a preferred solution of a thread detection device described in the present invention, wherein: the first threaded rods are symmetrically distributed on both sides of the connecting plate, the first threaded rods on both sides are connected by a transmission belt, the connecting plate is fixed to the middle part of the second fixed frame, the length of the slide groove where the mounting plate is located is smaller than the length of the scale, and the side end surface of the mounting plate is in contact with the side end surface of the scale.

[0011] As a preferred solution of a thread detection device described in the present invention, the adjustable automatic marking component includes a second threaded rod, the second threaded rod is rotatably connected in a fixed base, a fixed coil is welded and fixed on the second threaded rod, a pulling rope is wound on the fixed coil, the other end of the pulling rope is bolted and fixed to the bottom of the mounting plate, a spiral spring is welded and fixed on the second threaded rod, the outer end of the spiral spring is welded and fixed in a limit frame, and the limit frame is welded and fixed in the fixed base.

[0012] As a preferred solution of a thread detection device described in the present invention, wherein: the second threaded rod is rotatably connected to the bottom of the storage box through a sealed bearing, a connecting sleeve rod is threadedly connected to the second threaded rod, the top end of the connecting sleeve rod is screwed connected to a sponge plate, the connecting sleeve rod is limitedly slidably connected to the first filter plate, the first filter plate is screwed connected to the storage box, the second filter plate is screwed connected to the connecting sleeve rod, the second filter plate is threadedly connected to the third threaded rod, and the top end of the third threaded rod is screwed connected to a fixed push plate.

[0013] As a preferred solution of a thread detection device described in the present invention, wherein: the connecting sleeve rod is fixed at the middle part of the bottom of the sponge plate, the diameter of the sponge plate is smaller than the diameter of the through hole, the central axis of the through hole, the central axis of the sponge plate and the central axis of the fixed push plate are all located on the same vertical center line, and the diameter of the third threaded rod is smaller than the internal space diameter of the second threaded rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. A positioning drive component and a first threaded rod are provided, and the first threaded rod can be used to conveniently and efficiently adjust the height of the parts to be inspected on the clamping and positioning component on one side, so that the thread gauge on the clamping and positioning component on the other side can be adjusted to be aligned with the center of the threaded hole of the parts to be inspected, and the servo motor and the fixed spring on the mounting plate can automatically and efficiently complete the inspection of the threaded holes of the parts to be inspected in the same batch. At the same time, during the movement of the mounting plate, the inspection results of the threaded holes can be displayed and observed intuitively and accurately in combination with the scale, thereby effectively improving the work efficiency of batch inspection of the inspection equipment and effectively improving the applicability of the inspection equipment.

[0016] 2. An adjustable automatic marking component is provided. When the threaded hole is detected to be qualified, the mounting plate can drive the thread gauge on the clamping and positioning component to move to the far left. At this time, the volute spring can drive the second threaded rod to rotate in the connecting sleeve rod. At this time, the connecting sleeve rod can drive the sponge plate to move upward until it contacts the parts, and then the qualified parts can be automatically marked, thereby effectively avoiding confusion between qualified and unqualified parts, effectively improving the working efficiency of the detection equipment, and effectively increasing the diversity and efficiency of the use of the detection equipment. When the detection is unqualified, the movement distance of the mounting plate is not enough, and no mark will be generated at this time. By rotating the third threaded rod, the middle part of the sponge plate can be pushed upward by fixing the push plate, and then the threaded holes of different depths can be marked as qualified, thereby effectively improving the applicability of the detection equipment.

[0017] 3. A clamping and positioning assembly is provided, which utilizes the rotation of the worm, combined with the drive of the worm wheel and the first circular gear, and can drive the corresponding meshing gear rods to move toward the middle on the second fixed frame at the same time through the meshing second circular gears. At this time, each gear rod can drive the corresponding clamping plate to move toward the middle on the second fixed frame at the same time through the connecting plate. Combined with the rubber pad, it can conveniently and stably clamp and fix parts and thread gauges of different specifications and sizes to be inspected, thereby ensuring the convenience and efficiency of subsequent replacement, clamping and inspection of parts of the same batch, effectively improving the efficiency and convenience of the use of the inspection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a thread detection device of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of a first threaded rod of a thread detection device of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of a magnetic ring of a thread detection device of the present invention;

[0022] Figure 4 It is a schematic diagram of the overall main structure of a thread detection device of the present invention;

[0023] Figure 5 The present invention is a thread detection device Figure 4Schematic diagram of the structure at A in the middle;

[0024] Figure 6 It is a structural schematic diagram of a clamping plate of a thread detection device of the present invention;

[0025] Figure 7 It is a schematic diagram of the side view structure of a connecting plate of a thread detection device of the present invention;

[0026] Figure 8 It is a schematic diagram of the side view structure of a worm of a thread detection device of the present invention;

[0027] Fig. 9 It is a schematic diagram of the side view of the gear rod of a thread detection device of the present invention;

[0028] Fig.10 This is a schematic diagram of the structure of a rubber pad of a thread detection device of the present invention;

[0029] Fig.11 The present invention is a thread detection device Figure 4 Schematic diagram of the structure at B in the middle;

[0030] Fig.12 It is a schematic diagram of a top view structure of a volute spring of a thread detection device of the present invention;

[0031] Fig.13 It is a structural schematic diagram of a fixed push plate of a thread detection device of the present invention;

[0032] Fig.14 The present invention is a schematic diagram of a top view of a connecting sleeve rod of a thread detection device.

[0033] Numbers in the figure: 1, fixed base; 2, mounting plate; 3, positioning drive assembly; 301, magnetic plate; 302, connecting push rod; 303, magnetic ring; 304, fixing spring; 4, scale; 5, servo motor; 6, first fixed frame; 7, clamping positioning assembly; 701, worm; 702, worm wheel; 703, fixed shaft; 704, first circular gear; 705, second circular gear; 706, gear rod; 707, connecting plate; 708, clamping plate; 709, Rubber pad; 8. first threaded rod; 9. transmission belt; 10. connecting plate; 11. second fixed frame; 12. pulling rope; 13. fixed coil; 14. limit frame; 15. volute spring; 16. storage box; 17. through hole; 18. adjustable automatic marking component; 1801. second threaded rod; 1802. connecting sleeve rod; 1803. sponge plate; 1804. first filter plate; 1805. second filter plate; 1806. third threaded rod; 1807. fixed push plate. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0037] Example

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figure 1-14 As shown, a thread detection device includes a fixed base 1, an upper limit sliding connection of the fixed base 1 is connected to a mounting plate 2, a positioning drive assembly 3 is installed at the bottom end of the mounting plate 2, a scale 4 and a storage box 16 are welded and fixed on the top surface of the fixed base 1, a servo motor 5 is welded and fixed on the side end surface of the mounting plate 2, a first fixed frame 6 is welded and fixed on the output shaft of the servo motor 5, a first threaded rod 8 is rotatably connected to the top surface of the fixed base 1, a transmission belt 9 is connected to the bottom of the first threaded rod 8, a connecting plate 10 is screwed to the first threaded rod 8, a second fixed frame 11 is welded and fixed on the connecting plate 10, a clamping positioning assembly 7 is installed in both the first fixed frame 6 and the second fixed frame 11, a through hole 17 is opened through the top of the storage box 16, and an adjustable automatic marking assembly 18 is installed in the storage box 16.

[0040] The clamping and positioning components 7 on both sides can be used to perform convenient and efficient adaptive clamping and fixing work on the parts to be inspected and the thread gauge respectively. Subsequently, the positioning drive component 3 and the first threaded rod 8 are used to cooperate and drive, so as to automatically and efficiently complete the inspection work of the threaded holes of the parts to be inspected in the same batch. At the same time, during the movement of the mounting plate 2, combined with the scale 4, the inspection results of the threaded holes can be displayed and observed intuitively and accurately, thereby effectively improving the working efficiency of the inspection equipment and effectively improving the applicability of the inspection equipment. In addition, during the movement of the mounting plate 2, combined with the adjustable automatic marking component 18, qualified parts can be automatically marked, thereby effectively avoiding confusion between qualified and unqualified parts, effectively improving the working efficiency of the inspection equipment and effectively increasing the diversity and efficiency of the use of the inspection equipment.

[0041] In this example, the positioning drive assembly 3 includes a magnetic plate 301, which is welded and fixed on the bottom side end surface of the mounting plate 2. A connecting push rod 302 is screwed to the magnetic plate 301, and the connecting push rod 302 is slidingly connected to the fixed base 1. A magnetic ring 303 is screwed inside the fixed base 1. A fixing spring 304 is welded and fixed on the bottom side end surface of the mounting plate 2, and the other end of the fixing spring 304 is welded and fixed inside the fixed base 1.

[0042] The diameter of the connecting push rod 302 is smaller than the inner diameter of the magnetic ring 303 , the outer diameter of the magnetic ring 303 is equal to the diameter of the magnetic plate 301 , and the magnetic attraction between the magnetic plate 301 and the magnetic ring 303 is greater than the elastic force of the fixing spring 304 .

[0043] It is ensured that when the magnetic plate 301 and the magnetic ring 303 are performing adsorption work, the elastic force of the fixing spring 304 will not cause the magnetic plate 301 and the magnetic ring 303 to separate, thereby ensuring the stability of the positioning work of the mounting plate 2, thereby ensuring the stability and safety of the subsequent clamping of the thread gauge.

[0044] In this example, the clamping and positioning assembly 7 includes a worm 701, which is rotationally connected to the first fixed frame 6 and the second fixed frame 11. A worm wheel 702 is meshedly connected to the worm 701, and the worm wheel 702 is welded and fixed on the fixed shaft 703. The fixed shaft 703 is rotationally connected in the first fixed frame 6 and the second fixed frame 11. A first circular gear 704 is welded and fixed to the fixed shaft 703, and a second circular gear 705 is meshedly connected to the first circular gear 704. A gear rod 706 is meshedly connected to the second circular gear 705. The gear rod 706 is limitedly slidably connected to the first fixed frame 6 and the second fixed frame 11. A connecting plate 707 is welded and fixed to the top surface of the gear rod 706, and a clamping plate 708 is welded and fixed to the connecting plate 707. A rubber pad 709 is meshed and connected to the clamping plate 708.

[0045] The worm gear 702 is respectively connected to the inner center part of the first fixed frame 6 and the inner center part of the second fixed frame 11. The second circular gears 705 are distributed at equal angles on the first circular gear 704. The second circular gears 705 correspond one-to-one with the clamping plate 708 through the connecting plate 707 on the gear rod 706. The connecting plate 707 is fixed to the bottom middle part of the clamping plate 708.

[0046] The clamping plates 708 can be used to conveniently and efficiently clamp and fix parts and thread gauges of different sizes to be inspected, thereby ensuring the convenience and efficiency of subsequent inspection work and effectively improving the efficiency of the use of the inspection equipment.

[0047] In this example, the first threaded rods 8 are symmetrically distributed on both sides of the connecting plate 10, and the first threaded rods 8 on both sides are connected by a transmission belt 9. The connecting plate 10 is fixed to the middle part of the second fixed frame 11. The length of the slide groove where the mounting plate 2 is located is smaller than the length of the scale 4, and the side end surface of the mounting plate 2 is in contact with the side end surface of the scale 4.

[0048] The above structure ensures that the installation plate 2 can intuitively and accurately observe and display the detection results of the threaded holes in combination with the scale 4 during the movement, thereby increasing the diversity of use of the detection equipment.

[0049] In this example, the adjustable automatic marking component 18 includes a second threaded rod 1801, which is rotatably connected to the fixed base 1. A fixed coil 13 is welded and fixed on the second threaded rod 1801, and a pulling rope 12 is wound around the fixed coil 13. The other end of the pulling rope 12 is bolted and fixed to the bottom of the mounting plate 2. A spiral spring 15 is welded and fixed on the second threaded rod 1801, and the outer end of the spiral spring 15 is welded and fixed in the limit frame 14, and the limit frame 14 is welded and fixed in the fixed base 1.

[0050] The stability of the working state of the spiral spring 15 in the limit frame 14 is ensured, thereby ensuring the convenience and efficiency of the subsequent automatic driving work of the adjustable automatic marking component 18, thereby ensuring the convenience and efficiency of the marking work.

[0051] In this example, the second threaded rod 1801 is rotatably connected to the bottom of the storage box 16 through a sealed bearing, the second threaded rod 1801 is threadedly connected to a connecting sleeve rod 1802, the top end of the connecting sleeve rod 1802 is screwed connected to a sponge plate 1803, the connecting sleeve rod 1802 is slidingly connected to the first filter plate 1804, the first filter plate 1804 is screwed connected to the storage box 16, the connecting sleeve rod 1802 is screwed connected to the second filter plate 1805, the second filter plate 1805 is threadedly connected to a third threaded rod 1806, and the top end of the third threaded rod 1806 is screwed connected to a fixed push plate 1807.

[0052] The connecting sleeve rod 1802 is fixed in the middle bottom part of the sponge plate 1803. The diameter of the sponge plate 1803 is smaller than the diameter of the through hole 17. The central axis of the through hole 17, the central axis of the sponge plate 1803 and the central axis of the fixed push plate 1807 are all located on the same vertical center line. The diameter of the third threaded rod 1806 is smaller than the internal space diameter of the second threaded rod 1801.

[0053] The adverse effects of the third threaded rod 1806 on the second threaded rod 1801 can be effectively avoided. Combined with the fixed push plate 1807, the height of the sponge plate 1803 can be conveniently and stably adaptively adjusted, thereby ensuring the convenience and stability of the detection and marking work for threaded holes of different depths.

[0054] It should be noted that the present invention is a thread detection device. First, the staff can select a component to be detected with qualified threads and rotate the thread gauge into the threaded hole of the component to be detected. Then the staff can place the component to be detected on the second fixed frame 11 on the left. At this time, the staff can rotate the worm 701 on the second fixed frame 11. At this time, under the rotation of the worm 701, the meshing worm wheel 702 can drive the first circular gear 704 on the fixed shaft 703 to rotate stably. During the rotation of the first circular gear 704, the meshing second circular gears 705 can drive the corresponding meshing gear rods 706 on the second fixed frame 11 to move toward the middle at the same time. At this time, each gear rod 706 can be connected through the connecting plate 707. Drive the corresponding clamping plate 708 to move toward the middle on the second fixed frame 11 at the same time. Combined with the rubber pad 709, it can conveniently and stably clamp and fix the parts to be tested of different sizes. Then the staff can use the connecting push rod 302 to push the mounting plate 2 to move to the left until the magnetic plate 301 on the connecting push rod 302 moves away from the magnetic ring 303. At this time, under the action of the elastic restoring force of the fixing spring 304, the first fixing frame 6 on the right side can be driven to move automatically to the left through the mounting plate 2 until the first fixing frame 6 moves to fit with the thread gauge. Then the staff can rotate the worm 701 on the first fixing frame 6 on the right side. Similarly, each clamping plate 708 and the corresponding rubber pad 709 can be used to conveniently and efficiently clamp and fix thread gauges of different sizes.

[0055] During the working process of the second fixed frame 11, the staff can rotate the first threaded rod 8. At this time, under the action of the transmission belt 9, the first threaded rods 8 on both sides can be driven to rotate simultaneously in the connecting plate 10, and the second fixed frame 11 on the left can be driven through the connecting plate 10 to perform convenient and stable height adjustment, so that the thread gauge on the first fixed frame 6 on the other side can be adjusted to align with the center of the threaded hole of the part to be inspected, so as to ensure the stability of subsequent inspection work. At the same time, after the clamping and positioning assemblies 7 on both sides respectively clamp and stabilize the qualified parts to be inspected and the thread gauge connected thereto, the staff can rotate the third threaded rod 1806 in the second threaded rod 1801. At this time, during the rotation of the third threaded rod 1806, it can move upward on the second filter plate 1805. At this time, the third threaded rod 1806 can push the middle part of the sponge plate 1803 upward through the fixed push plate 1807 until it contacts with the qualified parts to be inspected. At this time, the debugging work is completed.

[0056] Then the staff can control and start the servo motor 5 on the mounting plate 2. At this time, the servo motor 5 can drive the thread gauge to rotate in the opposite direction through the clamping and positioning assembly 7 on the first fixed frame 6 until the thread gauge rotates out of the threaded hole of the part to be detected. Then the staff uses the connecting push rod 302 to pull the mounting plate 2 to move to the right, and the magnetic plate 301 and the magnetic ring 303 can be stably positioned and adsorbed. Then the staff can use the clamping and positioning assembly 7 on the second fixed frame 11 to replace and clamp the next part to be detected in the same batch. At this time, the staff can push the first fixed frame 6 until the magnetic plate 301 moves out of the magnetic ring 303. At this time, the first fixed frame 6 combined with the fixing spring 304 can drive the thread gauge to move to the threaded hole of the part to be detected. Combined with the drive of the servo motor 5, the thread gauge can be driven to rotate stably until the thread gauge rotates in the threaded hole of the part to be detected until it can no longer rotate. At this time, the staff can observe the movement distance of the mounting plate 2 on the scale 4, and can intuitively and accurately display and observe the detection results of the threaded hole, thereby effectively improving the working efficiency of the detection equipment and effectively improving the applicability of the detection equipment.

[0057] When the mounting plate 2 moves, the pulling rope 12 can be driven to move to the left. At this time, the volute spring 15 in the limit frame 14 can drive the second threaded rod 1801 to rotate stably in the connecting sleeve rod 1802. Under the rotation of the second threaded rod 1801, the connecting sleeve rod 1802 can be driven to move stably upward on the first filter plate 1804 in the storage box 16, thereby driving the sponge plate 1803 to move upward. When the threaded hole of the component to be inspected is qualified, the movement distance of the mounting plate 2 is sufficient. At this time, the sponge plate 1803 can move upward to make contact with the component. When the inspection fails, the movement distance of the mounting plate 2 is insufficient and no mark is generated. Subsequently, when the mounting plate 2 is reset, the cooperation of the pulling rope 12 and the fixed coil 13 can drive the second threaded rod 1801 to rotate in the opposite direction, thereby driving the sponge plate 1803 to move downward into the storage box 16 and contact with the paint in the storage box 16, thereby ensuring the stability of subsequent repeated working conditions, and repeating this process can automatically and stably inspect the threaded holes of the parts to be inspected in the same batch.

[0058] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A thread detection device, comprising a fixed base (1), characterized in that ； The upper limit position of the fixed base (1) is slidably connected to a mounting plate (2), a positioning drive assembly (3) is installed at the bottom end of the mounting plate (2), a scale (4) and a storage box (16) are welded and fixed on the top surface of the fixed base (1), a servo motor (5) is welded and fixed on the side end surface of the mounting plate (2), a first fixed frame (6) is welded and fixed on the output shaft of the servo motor (5), a first threaded rod (8) is rotatably connected to the top surface of the fixed base (1), a transmission belt (9) is connected to the bottom of the first threaded rod (8), a connecting plate (10) is screwed to the first threaded rod (8), a second fixed frame (11) is welded and fixed to the connecting plate (10), a clamping positioning assembly (7) is installed in both the first fixed frame (6) and the second fixed frame (11), a through hole (17) is opened through the top of the storage box (16), and an adjustable automatic marking assembly (18) is installed in the storage box (16); The positioning drive assembly (3) comprises a magnetic plate (301), the magnetic plate (301) is welded and fixed on the bottom side end surface of the mounting plate (2), a connecting push rod (302) is screwed to the magnetic plate (301), the connecting push rod (302) is limitedly slidably connected to the fixed base (1), a magnetic ring (303) is screwed inside the fixed base (1), a fixing spring (304) is welded and fixed on the bottom side end surface of the mounting plate (2), and the other end of the fixing spring (304) is welded and fixed inside the fixed base (1); The diameter of the connecting push rod (302) is smaller than the inner diameter of the magnetic ring (303), the outer diameter of the magnetic ring (303) is equal to the diameter of the magnetic plate (301), and the magnetic attraction between the magnetic plate (301) and the magnetic ring (303) is greater than the elastic force of the fixing spring (304); The adjustable automatic marking component (18) comprises a second threaded rod (1801), the second threaded rod (1801) is rotatably connected in the fixed base (1), a fixed coil (13) is welded and fixed on the second threaded rod (1801), a pulling rope (12) is wound around the fixed coil (13), the other end of the pulling rope (12) is bolted and fixed to the bottom of the mounting plate (2), a volute spring (15) is welded and fixed on the second threaded rod (1801), the outer end of the volute spring (15) is welded and fixed in the limit frame (14), and the limit frame (14) is welded and fixed in the fixed base (1); The second threaded rod (1801) is rotatably connected to the bottom of the storage box (16) through a sealed bearing, a connecting rod (1802) is threadedly connected to the second threaded rod (1801), a sponge plate (1803) is screwed to the top of the connecting rod (1802), the connecting rod (1802) is limitedly slidably connected to the first filter plate (1804), the first filter plate (1804) is screwed to the storage box (16), the connecting rod (1802) is screwed to the second filter plate (1805), the second filter plate (1805) is threadedly connected to the third threaded rod (1806), and a fixed push plate (1807) is screwed to the top of the third threaded rod (1806); The connecting sleeve rod (1802) is fixed in the middle part of the bottom of the sponge plate (1803), the diameter of the sponge plate (1803) is smaller than the diameter of the through hole (17), the central axis of the through hole (17), the central axis of the sponge plate (1803) and the central axis of the fixed push plate (1807) are all located on the same vertical center line, and the diameter of the third threaded rod (1806) is smaller than the internal space diameter of the second threaded rod (1801).

2. A thread detection device according to claim 1, characterized in that: The clamping and positioning assembly (7) comprises a worm (701), the worm (701) is rotatably connected to the first fixed frame (6) and the second fixed frame (11), the worm (701) is meshedly connected with a worm wheel (702), the worm wheel (702) is welded and fixed on a fixed shaft (703), the fixed shaft (703) is rotatably connected in the first fixed frame (6) and the second fixed frame (11), the fixed shaft (703) is welded and fixed with a first circular gear (704), the first circular gear (704) is welded and fixed to the first fixed frame (6) and the second fixed frame (11), and the first circular gear (704) is welded and fixed to the first fixed frame (6). A circular gear (704) is meshedly connected to a second circular gear (705), the second circular gear (705) is meshedly connected to a gear rod (706), the gear rod (706) is limitedly slidably connected to the first fixed frame (6) and the second fixed frame (11), a connecting plate (707) is welded and fixed to the top surface of the gear rod (706), a clamping plate (708) is welded and fixed to the connecting plate (707), and a rubber pad (709) is meshedly connected to the clamping plate (708).

3. A thread detection device according to claim 2, characterized in that: The worm gear (702) is connected to the inner center portion of the first fixed frame (6) and the inner center portion of the second fixed frame (11), respectively; the second circular gears (705) are distributed at equal angles on the first circular gear (704); the second circular gears (705) correspond to the clamping plate (708) one by one through the connecting plate (707) on the gear rod (706); the connecting plate (707) is fixed to the bottom middle portion of the clamping plate (708).

4. A thread detection device according to claim 1, characterized in that: The first threaded rods (8) are symmetrically distributed on both sides of the connecting plate (10), and the first threaded rods (8) on both sides are connected by a transmission belt (9). The connecting plate (10) is fixed to the middle part of the second fixed frame (11). The length of the slide groove where the mounting plate (2) is located is smaller than the length of the scale (4), and the side end surface of the mounting plate (2) is in contact with the side end surface of the scale (4).

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