An internal thread detection device

Abstract

The utility model provides a kind of internal thread detection device, it includes pedestal, circular ring turntable, fixed ring, gear ring group, gear and motor, the fixed ring is sleeved in the one side outside of circular ring turntable and is fixedly installed on the pedestal, the gear ring group is rotatably installed in the fixed ring, the gear ring group is used to install light source and vision sensor, the gear ring group is rotatably installed in the fixed ring, the gear ring group is used to install light source and vision sensor, the gear is engaged with and is arranged in the gear ring group and is used to make the gear ring group relative rotation, the motor is installed on the fixed ring and is used to drive the gear rotation.The utility model changes the mode of angle by using the gear ring group that can be relative rotation to drive light source and vision sensor in the outside of circular ring turntable, reaches the technical effect of improving the smoothness of operation process and thereby guarantees the operation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of nut thread testing equipment, and in particular to an internal thread testing device. Background Technology

[0002] Threads are used extensively in daily life, and there are many types of thread products on the market. The traditional method of thread inspection is to use thread go and no-go gauges for inspection. Although the inspection speed of go and no-go gauges is fast, they cannot measure specific data such as pitch diameter and pitch error. The accuracy will decrease with long-term operation and they need to be calibrated regularly, so they have certain drawbacks.

[0003] Currently, visual inspection equipment is commonly used, employing optical imaging combined with image processing algorithms for non-contact inspection. Typically, a rotating transparent turntable is set up. A loading device feeds the nuts to be inspected onto the turntable from one side. Multiple visual sensors above the turntable, working in conjunction with multiple light sources below, collect and analyze data from the nuts. Using various mature algorithms, defective and qualified parts are collected separately by a unloading device, completing the process. Specifically, when collecting data on the inner thread of the nut, the viewing angle of the visual sensor and the direction of the light source must be at a certain angle to the nut's central axis. This means the light source should shine laterally into the nut's interior, making it easier for the visual sensor to collect the internal thread data.

[0004] However, the light source and acquisition angle of the commonly used testing equipment are fixed. When dealing with nuts of different specifications, it is necessary to stop the machine to adjust the light source and acquisition angle, which is cumbersome and reduces the smoothness of the operation, resulting in a decrease in the overall work efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an internal thread detection device, which solves the problem of reduced work efficiency caused by the need to stop the machine to adjust the light source and the acquisition angle when detecting nuts of different specifications.

[0006] According to an embodiment of this utility model, an internal thread detection device includes a base, a circular turntable, a fixed ring, a gear ring assembly, a gear, and a motor. The fixed ring is sleeved on the outside of one side of the circular turntable and fixedly installed on the base. The gear ring assembly is rotatably installed inside the fixed ring and is used to install a light source and a vision sensor. The gear is meshed within the gear ring assembly and is used to cause the gear ring assembly to rotate in opposite directions. The motor is installed on the fixed ring and is used to drive the gear to rotate.

[0007] In the above embodiment, a rotatable annular turntable is set on the base. The annular turntable is used to drive the nut to be detected to rotate. A fixed ring is sleeved on the outside of the annular turntable, and a geared ring assembly is rotatably set on the inside of the fixed ring. A light source and a vision sensor are respectively installed in the geared ring assembly, which can collect data on the passing nuts. When the nut specifications change, the gears driven by the motor drive the gears to rotate in opposite directions. The rotation of the geared ring assembly in opposite directions can drive the light source and the vision sensor to move closer or further apart, adjusting the incident angle of the light source and the acquisition angle of the vision sensor. There is no need to stop the machine to adjust the light source angle, which ensures the smoothness of the operation and thus improves the overall operation efficiency.

[0008] In some embodiments, the fixing ring is annular, and the fixing ring has an annular groove inside for mounting the toothed ring assembly, and the bottom of the fixing ring is provided with a mounting block that is fixedly connected to the top of the base.

[0009] In some embodiments, the center point of the fixed ring is orthogonal to the arc of the median diameter of the circular turntable.

[0010] In some embodiments, the toothed ring assembly includes a pair of toothed rings rotatably disposed on both sides of the ring groove and a limiting ring fixedly disposed on opposite sides of the two toothed rings. The outer edges of both sides of the ring groove are provided with limiting grooves that are adapted to the two limiting rings respectively. The light source and the vision sensor are respectively installed on the inner walls of the two toothed rings.

[0011] In some embodiments, the gears are provided in a plurality of equidistant rings between the two gear rings, and the two sides of the gears mesh with the two gear rings respectively. A rotating shaft that extends through to the outside of the fixed ring is fixedly installed in the middle of the plurality of gear rings, and one end of one of the rotating shafts is fixedly connected to the output shaft of the motor.

[0012] In some embodiments, the top of the base has a plurality of support seats arranged in a ring, and the inner side of the top of each of the support seats is provided with a limiting protrusion that is connected to the inner side of the annular turntable.

[0013] In some embodiments, each of the plurality of support seats has a cavity inside, and a drive wheel that abuts against the bottom of the annular turntable is installed in each cavity.

[0014] Compared with the prior art, this utility model has the following advantages: by using a toothed ring assembly that can rotate in opposite directions to drive the light source and vision sensor to change their angles, it solves the technical problem that existing detection devices need to stop to adjust the light source and acquisition angle when detecting nuts of different specifications, which leads to a decrease in work efficiency. This achieves the technical effect of improving the smoothness of the operation process and thus ensuring work efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the side structure of the central fixing ring;

[0017] Figure 3 for Figure 1 A partial cross-sectional structural diagram of the fixing ring in the diagram;

[0018] Figure 4 for Figure 1 A partial cross-sectional structural diagram of the turntable.

[0019] In the above figures: 100, base; 200, annular turntable; 300, fixed ring; 310, annular groove; 320, mounting block; 400, gear ring assembly; 410, gear ring; 420, limiting ring; 430, limiting groove; 500, gear; 510, rotating shaft; 600, motor; 700, support base; 710, limiting protrusion; 720, cavity; 730, drive wheel. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 are not intended to 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.

[0022] In an exemplary implementation, such as Figures 1-4As shown, this embodiment provides an internal thread detection device, including a base 100, a circular turntable 200, a fixed ring 300, a gear ring assembly 400, a gear 500, and a motor 600. The fixed ring 300 is sleeved on the outside of one side of the circular turntable 200 and fixedly installed on the base 100. The gear ring assembly 400 is rotatably installed inside the fixed ring 300 and is used to install a light source and a vision sensor. The gear 500 is meshed inside the gear ring assembly 400 and is used to make the gear ring assembly 400 rotate in opposite directions. The motor 600 is installed on the fixed ring 300 and is used to drive the gear 500 to rotate.

[0023] In this embodiment, a rotatable annular turntable 200 is provided on the base 100. The annular turntable 200 is used to drive the nut to be tested to rotate. A fixing ring 300 is sleeved on the outside of the annular turntable 200, and a gear ring assembly 400 is rotatably arranged on the inside of the fixing ring 300. A light source and a vision sensor are respectively installed in the gear ring assembly 400, which can collect data on the passing nuts. When the nut specification changes, the gear 500 driven by the motor 600 drives the gear ring assembly 400 to rotate in opposite directions. The rotation of the gear ring assembly 400 in opposite directions can drive the light source and the vision sensor to move closer or further apart, adjusting the incident angle of the light source and the acquisition angle of the vision sensor. There is no need to stop the machine to adjust the light source angle, ensuring the smoothness of the operation and thus improving the overall operation efficiency.

[0024] In one embodiment, please refer to Figure 1 The fixing ring 300 is circular, and the inside of the fixing ring 300 is provided with an annular groove 310 for mounting the toothed ring assembly 400. The bottom of the fixing ring 300 is provided with a mounting block 320 that is fixedly connected to the top of the base 100. The axis of the fixing ring 300 is orthogonal to the arc of the middle diameter circle of the annular turntable 200.

[0025] In this embodiment, the annular turntable 200 and the fixed ring 300 are arranged in a "chain" shape, and the nut passes through the interior of the fixed ring 300 when the annular turntable 200 rotates.

[0026] In one embodiment, please refer to Figures 1-3 The toothed ring assembly 400 includes a pair of toothed rings 410 rotatably disposed on both sides of the ring groove 310 and a limiting ring 420 fixedly disposed on opposite sides of the two toothed rings 410. The outer edges of both sides of the ring groove 310 are provided with limiting grooves 430 that are adapted to the two limiting rings 420 respectively. The light source and vision sensor are respectively installed on the inner walls of the two toothed rings 410.

[0027] In this embodiment, two toothed rings 410 are installed opposite to each other and rotatably in the ring groove 310, with a certain distance between the two toothed rings 410. At this time, the light source is located inside the lower part of the toothed ring 410, and the light source is fixedly connected to the inner wall of one of the toothed rings 410. The vision sensor is located inside the upper part of the toothed ring 410, and the vision sensor is fixedly connected to the inner wall of the other toothed ring 410.

[0028] Furthermore, the limiting rings 420 on both sides of the gear ring 410 are rotatably disposed within the limiting groove 430 to ensure the stability of the gear ring 410 during rotation.

[0029] In one embodiment, please refer to Figure 1 and Figure 4 The base 100 has several support seats 700 arranged in a ring on its top. Each of the support seats 700 has a limiting protrusion 710 on its inner side that is connected to the inner side of the annular turntable 200. Each of the support seats 700 has a cavity 720 inside, and each cavity 720 has a drive wheel 730 that abuts against the bottom of the annular turntable 200.

[0030] In this embodiment, the annular turntable 200 is placed on top of the support base 700. The inner wall of the annular turntable 200 contacts several limiting protrusions 710. Then, the drive wheel 730 abuts against the bottom of the annular turntable 200 and drives it to rotate. Specifically, several drive wheels 730 are evenly distributed on the bottom of the annular turntable 200, lifting the annular turntable 200. There is no friction between the bottom of the annular turntable 200 and the support base 700.

[0031] Among them, the drive wheel 730 is an existing drive structure with power, which will not be described in detail.

[0032] Finally, the light source and vision sensor are both common existing components, which are adapted to different working environments and will not be elaborated further.

[0033] To better understand this utility model, the following is combined with... Figures 1 to 4 The technical solution of this utility model is described in detail below: In use, a rotating annular turntable 200 is set on the base 100. The annular turntable 200 drives the nut to be detected to rotate. A fixing ring 300 is sleeved on the outside of the annular turntable 200. Two toothed rings 410 are rotatably set on the inside of the fixing ring 300. The light source and vision sensor are respectively installed on the inner wall of the two toothed rings 410, which can collect data on the nuts that pass by. When the nut specification changes, the motor 600 shaft 510 drives the gear 500 to mesh and drive the two toothed rings 410 to rotate in opposite directions. The two toothed rings 410 rotating in opposite directions can drive the light source and vision sensor to move closer or further apart, adjusting the incident angle of the light source and the acquisition angle of the vision sensor. There is no need to stop the machine to adjust the light source angle, ensuring the smoothness of the operation and thus improving the overall operation efficiency.

[0034] In summary, this utility model solves the technical problem of reduced work efficiency caused by the need to stop the machine to adjust the light source and acquisition angle when detecting nuts of different specifications by using a toothed ring assembly 400 that can rotate in opposite directions outside the circular turntable 200. This is achieved by using a toothed ring assembly 400 that can rotate in opposite directions outside the circular turntable 200 to drive the light source and vision sensor to change their angle. This improves the smoothness of the operation process and ensures the efficiency of the operation.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An internal thread detection device, comprising a base and a circular turntable rotatably mounted on the base, characterized in that: A fixing ring is sleeved on the outside of one side of the circular turntable and fixedly installed on the base; A toothed ring assembly, which is rotatably mounted inside the fixed ring, is used to mount a light source and a vision sensor; A gear, which is meshed within the gear ring assembly and is used to cause the gear ring assembly to rotate in opposite directions; An electric motor is mounted on the fixed ring and is used to drive the gear to rotate.

2. The device of claim 1, wherein, The fixing ring is circular, and the inside of the fixing ring has an annular groove for installing the toothed ring assembly. The bottom of the fixing ring is provided with a mounting block that is fixedly connected to the top of the base.

3. The internal thread detection device as described in claim 1, characterized in that, The center point of the fixed ring is orthogonal to the arc of the middle diameter circle of the circular turntable.

4. The internal thread detection device as described in claim 2, characterized in that, The toothed ring assembly includes a pair of toothed rings rotatably disposed on both sides of the ring groove and a limiting ring fixedly disposed on the opposite side of the two toothed rings. The outer edges of both sides of the ring groove are provided with limiting grooves that are adapted to the two limiting rings respectively. The light source and vision sensor are respectively installed on the inner walls of the two toothed rings.

5. The internal thread detection device as described in claim 4, characterized in that, The gears are provided in a ring and are equally spaced between the two gear rings. The two sides of the gears mesh with the two gear rings respectively. A rotating shaft that passes through the outside of the fixed ring is fixedly installed in the middle of the gear rings. One end of one of the rotating shafts is fixedly connected to the output shaft of the motor.

6. The internal thread detection device as described in claim 1, characterized in that, The top of the base has several support seats arranged in a ring, and the inner side of the top of each of the support seats is provided with a limiting protrusion that connects to the inner side of the annular turntable.

7. The internal thread detection device as described in claim 6, characterized in that, Each of the aforementioned support bases has an internal cavity, and a drive wheel that abuts against the bottom of the annular turntable is installed in each cavity.

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