Multi-angle and multi-position thread detection device

Abstract

The utility model provides a multi-angle and multi-position thread detection device, which is characterized in that a thread detection head is arranged on a working table, the thread detection head is connected to a rotating mechanism in a vertical posture to realize rotation action, and the rotating mechanism is arranged on a Z-axis moving end of a three-axis linear displacement platform; a product carrier is arranged on the carrying table, the carrying table is connected to an angle adjusting mechanism so that the carrying table can conduct angle adjustment in the vertical direction, the overturning direction of the carrying table and the X-axis moving direction of the thread detection head are kept in a perpendicular state, and the angle adjusting mechanism is arranged at the driving end of the single-axis linear displacement module. According to the utility model, the carrying platform is connected with the angle adjusting mechanism, so that the angle of the whole product carrier and the to-be-detected product on the product carrier can be adjusted in the vertical direction, a threaded hole in the side surface of the product can also be adjusted to a posture close to the vertical direction, and a thread detection head can be smoothly and vertically screwed in; the automatic, rapid, safe and reliable detection of the threaded hole at the special position of the product is successfully realized.

Description

Technical Field

[0001] This utility model relates to the field of threaded hole detection technology, specifically, it demonstrates a multi-angle, multi-position threaded hole detection device. Background Technology

[0002] Many mass-produced products have machined threaded holes to enable threaded connections with other products. However, during the machining process, factors such as tool wear may result in defective threaded holes, which can affect the quality of threaded connections between subsequent products. Therefore, it is necessary to inspect the threaded holes that have already been machined on the product.

[0003] Identifying threads with the naked eye presents significant challenges. Therefore, common internal thread inspection tools such as thread gauges are typically used during the inspection process. The operation involves manually screwing the thread gauge into the threaded hole for inspection. However, this manual screwing-in inspection method is slow and inefficient, directly impacting production speed and failing to meet daily production needs. Furthermore, the location of threaded holes varies on some products, with some located on the front and others on the side. Manual inspection requires constant adjustments to the position, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a multi-angle, multi-position thread detection device with a simple and practical structure and a high degree of automation.

[0005] The technical solution is as follows:

[0006] A multi-angle, multi-position thread detection device is installed on a worktable:

[0007] A thread detection head is vertically connected to a rotating mechanism to achieve rotation. The rotating mechanism is located on the Z-axis moving end of a three-axis linear displacement platform to achieve X, Y, and Z-axis movement.

[0008] At least one set of platforms, with product carriers mounted on the horizontally arranged platforms for fixing the products to be tested. The platforms are connected to an angle adjustment mechanism to allow for vertical angle adjustment. The flipping direction of the platforms is perpendicular to the X-axis movement direction of the thread detection head. The angle adjustment mechanism is mounted on the drive end of a single-axis linear displacement module, and the movement direction of the angle adjustment mechanism is consistent with the Y-axis movement direction of the thread detection head.

[0009] Optionally, the rotating mechanism includes a rotary motor component, a coupling, an adapter, and a limiting block arranged sequentially from top to bottom. The coupling is connected upward to the output end of the rotary motor component. The thread detection head is connected to the coupling via the adapter, and the adapter is movably inserted into the limiting block. This achieves reliable rotational drive for the thread detection head, ensuring stability and coaxiality during the detection process.

[0010] Furthermore, a sensor is installed at the bottom of the limiting block to detect the movement state of the thread detection head. This detects the number of rotations and the actual rotation state of the thread detection head.

[0011] Furthermore, it also includes a positioning camera, which, together with the rotary motor, is mounted on the three-axis linear displacement platform via a frame to position the threaded holes on the product to be inspected. This improves hole alignment accuracy and ensures that the thread inspection head can be successfully screwed into the threaded holes to be inspected.

[0012] Optionally, the platform is equipped with several telescopic cylinders. The telescopic ends of the cylinders are connected to an upward-facing swing arm. A pressing body is provided at the end of the swing arm, and a support is hinged to the middle of the swing arm. The support is fixed to the telescopic cylinder. This achieves uniform pressure distribution and reliable fixation, preventing the product from shifting during flipping or inspection. The structure is relatively simple and easy to maintain.

[0013] Optionally, the angle adjustment mechanism includes a base frame connected to the single-axis linear displacement module, a pair of side frames mounted on the base frame, and a mounting plate rotatably mounted on the inner side of the side frames. The platform is positioned between the two mounting plates, one of which is driven to rotate by a drive motor. This ensures stable multi-angle flipping and positioning of the platform.

[0014] Furthermore, a slotted photoelectric sensor is provided on the drive motor component, and a trigger end for triggering the slotted photoelectric sensor is provided on the mounting plate. This provides precise control of the flip angle and a limiting effect.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by connecting the platform to the angle adjustment mechanism, the entire product carrier and the product to be tested on it can be adjusted (i.e. flipped) in the vertical direction. This allows the threaded holes on the side of the product (and even part of the bottom or inclined surface) to be adjusted to a near vertically upward posture, which facilitates the smooth vertical screwing of the thread detection head. This successfully realizes the automatic, fast and safe and reliable detection of threaded holes in special positions (including the side) of the product. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of a multi-angle, multi-position thread detection device according to an embodiment of the present invention;

[0017] Figure 2The diagrams shown are related to the rotating mechanism in the embodiments of this utility model.

[0018] Figure 3 This is a schematic diagram of the angle adjustment mechanism in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the platform portion in an embodiment of the present invention;

[0020] The following are the relevant markings in the attached diagram: 1-Workbench surface, 2-Three-axis linear displacement platform, 3-Single-axis linear displacement module, 4-Rotation mechanism, 5-Thread detection head, 6-Angle adjustment mechanism, 7-Platform; 41-Rotary motor component, 42-Coupling, 43-Adapter, 44-Limiting block, 45-Sensor, 46-Positioning camera, 47-Frame; 61-Base frame, 62-Side frame, 63-Mounting plate, 64-Drive motor component, 65-Slotted photoelectric sensor, 66-Trigger end; 71-Product carrier, 72-Telescopic cylinder component, 73-Swing arm, 74-Pressing body, 75-Support. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides a multi-angle, multi-position thread detection device to solve the technical problems mentioned in the background art. (Refer to...) Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, specifically, a three-axis linear displacement platform 2 and two single-axis linear displacement modules 3 are arranged side by side on one side of a horizontal worktable 1. The three-axis linear displacement platform 2 and the single-axis linear displacement modules 3 are both common knowledge technologies. The former can provide linear movement in the X, Y and Z axes respectively, and the latter can provide linear movement in the Y axis direction.

[0023] A rotating mechanism 4 is provided on the Z-axis moving end of the three-axis linear displacement platform 2, and a thread detection head 5 is connected downward to the output end of the rotating mechanism 4. The thread detection head 5 adopts the industry standard go and no-go gauge. The thread detection head 5 is installed in a vertical position, and the rotating mechanism 4 realizes the rotation of the thread detection head 5.

[0024] An angle adjustment mechanism 6 is provided on the drive end of the single-axis linear displacement module 3. The angle adjustment mechanism 6 is connected to a horizontally arranged platform 7. The top surface of the platform 7 is provided with a product carrier 71 for fixing the product to be tested. The angle adjustment mechanism 6 realizes the vertical angle adjustment (that is, the up and down flipping) of the platform 7. The flipping direction of the platform 7 is perpendicular to the X-axis movement direction of the thread detection head 5, while the movement direction of the angle adjustment mechanism 6 is consistent with the Y-axis movement direction of the thread detection head 5.

[0025] The angle adjustment mechanism connected to the platform allows the entire product carrier and the product under test to be adjusted vertically. This allows the threaded holes on the side of the product to be adjusted to a near-vertical upward position, facilitating the smooth screwing in of the thread detection head. The thread detection head has a rotational action (to screw in / out), and is mounted on a three-axis linear displacement platform, allowing it to move flexibly to any set position in three-dimensional space. When the product is flipped, the position of the threaded hole on it will shift in the X-axis direction, but the detection head is movable in the X-axis direction, which can easily compensate for this shift and keep the thread detection head aligned.

[0026] The entire inspection process can be summarized as follows: product positioning → platform tilting angle adjustment → precise positioning of the thread inspection head → rotation and screwing of the thread inspection head into the inspection area → result judgment → the thread inspection head moves to the next inspection position, and the above process is repeated. This eliminates the need for manual handling, flipping, hole alignment, and screwing, significantly improving inspection speed and efficiency, meeting the needs of mass production, and freeing up labor.

[0027] In specific implementation, the rotating mechanism 4 includes a rotating motor component 41, a coupling 42, an adapter 43, and a limiting block 44 arranged sequentially from top to bottom. The coupling 42 is connected upward to the output end of the rotating motor component 41, and the thread detection head 5 is connected to the coupling 42 through the adapter 43, and the adapter 43 is movably inserted into the limiting block 44.

[0028] The rotating motor provides rotational power, and the coupling effectively compensates for minor coaxiality deviations between the motor and the thread detection head, reducing installation accuracy requirements and vibration. The adapter can be movably inserted into the limiting block, which means that the limiting block provides strong support and constraint for the adapter (and thus the thread detection head) in radial freedom, preventing it from shaking violently or deviating from the axis during screwing in, thus affecting the alignment of the thread detection head. The connection relationship between each component is clear, and it is also easy to disassemble and assemble, realizing reliable rotational drive for the thread detection head and ensuring stability and coaxiality during the detection process.

[0029] Based on the above design, a sensor 45, such as a Hall sensor, is installed at the bottom of the limiting block 44. The sensor 45 faces the thread detection head 5 to detect the movement state of the thread detection head. Detecting the number of rotations and the actual rotation state of the thread detection head through the sensor facilitates later maintenance and assessment.

[0030] In addition, a positioning camera 46, such as a vision camera, is also included. It is mounted on the Z-axis moving end of the three-axis linear displacement platform 2 together with the rotary motor component 41 via a frame 47. The shooting end of the positioning camera faces downward. Compared with human visual identification, visual positioning has high accuracy, fast speed and is not affected by human eye fatigue, so as to accurately identify the position of the screw hole on the product, thereby improving the hole accuracy and ensuring that the thread detection head is successfully screwed into the screw hole to be detected.

[0031] In specific implementation, the platform 7 is equipped with several telescopic cylinder components 72. The telescopic end of the telescopic cylinder component 72 is connected to a swing arm 73, that is, the telescopic cylinder component 72 is installed in a vertical position. The end of the swing arm 73 is equipped with a pressing body 74, which is also in a vertical position. The middle part of the swing arm 73 is hinged to a support 75, which is fixed on the telescopic cylinder component 72.

[0032] A telescopic cylinder is used as the power source to provide pushing and pulling force. The swing arm is connected to the telescopic end of the telescopic cylinder and hinged in the middle to a support fixed on the telescopic cylinder. This structure forms a lever mechanism. By using a short-stroke cylinder and amplifying the effect of the lever mechanism, a relatively large and controllable downward stroke and clamping force can be obtained at the pressing body, thereby achieving stable clamping of the product. In order to avoid excessive pressure damage to the product by the pressing body, a rubber layer can be laid on the bottom end face of the pressing body. This achieves uniform pressure distribution and reliable fixing effect, preventing the product from shifting during flipping or inspection.

[0033] In specific implementation, the angle adjustment mechanism 6 includes a base frame 61 connected to the single-axis linear displacement module 3, a pair of side frames 62 disposed on the base frame 61, and a mounting plate 63 rotatably disposed on the inner side of the side frames 62. The base frame 61 is horizontally arranged, and the two side frames 62 are arranged in a vertical posture in a mirror image on the top surface of the base frame 61. The mounting plate 63 is rotatably mounted on the inner side of the side frames 62 by a rotating body such as a bearing. The platform 7 is disposed between the two mounting plates 63. One of the mounting plates 63 is driven to rotate by a drive motor 64, which is fixed on the mounting plate 63.

[0034] The base frame connects to a single-axis displacement module, and a pair of side frames provide symmetrical support. The mounting plates are rotatably mounted inside the side frames, and the platform is positioned between the two mounting plates. This symmetrical frame structure provides a very stable tilting axis support for the platform, ensuring that the structure is stable and reliable when tilting the product, without twisting or shaking, and guaranteeing accurate tilting angles. One of the mounting plates is driven to rotate by a single motor. Since the two mounting plates are rigidly connected together through the platform, synchronous rotation of the two mounting plates (and the entire platform) can be achieved.

[0035] Based on the above design, a slotted photoelectric sensor 65 is provided on the main structure of the drive motor component 64, and a trigger end 66 for triggering the slotted photoelectric sensor 65 is provided on the mounting plate 63.

[0036] When the mounting plate (platform) rotates, its trigger end passes through the slotted photoelectric sensor on the drive motor component. The slotted photoelectric sensor can detect the position of the trigger end very accurately (such as the starting or ending position of rotation, or a preset specific angle position). When used in conjunction with the drive motor component (usually a servo or stepper motor with an encoder), it can achieve a very precise flip angle setting, ensuring that the product can always be fixed and detected at a consistent preset angle, thereby providing precise flip angle control and limit effect.

[0037] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A multi-angle, multi-position thread detection device, characterized in that, On a workbench (1), the following are set: The thread detection head (5) is vertically connected to a rotating mechanism (4) to achieve rotation. The rotating mechanism (4) is set on the Z-axis moving end of a three-axis linear displacement platform (2) to achieve X, Y and Z axis movement. At least one set of platforms (7), with product carriers (71) set on the horizontally arranged platforms (7) for fixing the products to be tested. The platforms (7) are connected to an angle adjustment mechanism (6) so that the platform (7) can be adjusted vertically. The flipping direction of the platform (7) is perpendicular to the X-axis movement direction of the thread detection head (5). The angle adjustment mechanism (6) is set on the drive end of a single-axis linear displacement module (3). The movement direction of the angle adjustment mechanism (6) is consistent with the Y-axis movement direction of the thread detection head (5).

2. The multi-angle, multi-position thread detection device according to claim 1, characterized in that, The rotating mechanism (4) includes a rotating motor component (41), a coupling (42), an adapter (43), and a limiting block (44) arranged sequentially from top to bottom. The coupling (42) is connected upward to the output end of the rotating motor component (41). The thread detection head (5) is connected to the coupling (42) through the adapter (43), and the adapter (43) is movably inserted into the limiting block (44).

3. The multi-angle, multi-position thread detection device according to claim 2, characterized in that, A sensor (45) is provided at the bottom of the limiting block (44) to detect the movement state of the thread detection head.

4. The multi-angle, multi-position thread detection device according to claim 2, characterized in that, It also includes a positioning camera (46), which, together with the rotary motor component (41), is mounted on the three-axis linear displacement platform (2) via a frame (47) to position the screw holes on the product to be inspected.

5. The multi-angle, multi-position thread detection device according to claim 1, characterized in that, The platform (7) is provided with several telescopic cylinder components (72). The telescopic end of the telescopic cylinder component (72) is connected to a swing arm (73) upward. The end of the swing arm (73) is provided with a pressing body (74). The middle part of the swing arm (73) is hinged to a support (75). The support (75) is fixed on the telescopic cylinder component (72).

6. The multi-angle, multi-position thread detection device according to claim 1, characterized in that, The angle adjustment mechanism (6) includes a base frame (61) connected to the single-axis linear displacement module (3), a pair of side frames (62) on the base frame (61), and a mounting plate (63) rotatably disposed on the inner side of the side frame (62). The platform (7) is disposed between the two mounting plates (63), and one of the mounting plates (63) is driven to rotate by a drive motor (64).

7. A multi-angle, multi-position thread detection device according to claim 6, characterized in that, The drive motor component (64) is provided with a slotted photoelectric sensor (65), and a trigger end (66) for triggering the slotted photoelectric sensor (65) is provided on the mounting plate (63).

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