Multi-angle probe for intelligent detection of precision machining machinery

Abstract

The utility model discloses a multi-angle probe for intelligent detection of precision machining machinery. The multi-angle probe comprises a stand column, a detection arm and a probe head. The stand column shell is composed of a plurality of sections of hinged arc-shaped elastic metal sheets, the angle limiting pin sheet and the shaft sleeve are matched, multi-angle flexible adjustment of the whole stand column and the detection arm is achieved, the arc-shaped metal sheets are provided with anti-slip lines, and the scales of the detection arm and the stand column pointer assist in precise angle control. A pressure sensor module, a displacement sensor module, a signal processing module and a wireless transmission module are integrated in the spherical probe head, a pressure signal is processed by a signal conditioning circuit composed of an operational amplifier and a filter circuit, a displacement signal is transmitted by an A / D conversion circuit, and the pressure signal and the displacement signal are analyzed and processed by a single-chip microcomputer minimum system circuit. And then the signal is transmitted to the Bluetooth or Wi-Fi wireless transmission module through the serial port communication circuit.

Description

Technical Field

[0001] This invention provides a multi-angle probe, belonging to the technical field of machining machinery and equipment, and particularly relates to a multi-angle probe for intelligent detection of precision machining machinery. Background Technology

[0002] In the field of precision machining, multi-angle probes are a key tool for detecting the dimensional accuracy and shape errors of mechanical parts. They acquire positional information by contacting the surface of the object being measured and are widely used in CNC machine tools, coordinate measuring machines, and other equipment, playing a vital role in ensuring machining quality and achieving automated inspection. Traditional probes typically consist of a base, a fixed column, a detection arm, and a probe head. Angle adjustment is achieved through mechanical structures or motor drives, and contact data is collected by built-in sensors and transmitted to the control system for analysis and processing.

[0003] Existing multi-angle probes mostly have rigid columns, with angle adjustment relying on joint bearings or stepper motors. This results in complex structures and limited adjustment ranges, making it difficult to meet the detection needs of complex structures such as deep holes and inner walls. The connection between the detection arm and the column is fixed, lacking flexible joints, leading to a single detection angle. At the same time, the sensor signal processing circuit has low integration, and data transmission relies on wired connections, resulting in cumbersome wiring, signal interference, and insufficient intelligence, making it impossible to achieve real-time data analysis and wireless transmission. Utility Model Content

[0004] To address the aforementioned issues, this application provides a multi-angle probe for intelligent inspection of precision machined machinery. This solves the problems of limited angle adjustment, poor inspection adaptability, and insufficient intelligence of traditional probes, significantly improving inspection efficiency and accuracy.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a multi-angle probe for intelligent detection of precision machining machinery, including a column, a detection arm disposed at the top of the column, and a probe head installed at the end of the detection arm;

[0006] The column is a hollow columnar structure, and its outer shell is composed of multiple sections of arc-shaped elastic metal sheets hinged together. An angle limiting pin is provided between adjacent arc-shaped elastic metal sheets, which can limit the relative rotation angle of adjacent arc-shaped elastic metal sheets. By manually bending the outer shell of the column, the column as a whole can be adjusted at multiple angles. The end of the column away from the probe head is the external circuit connection end, and the middle of the detection arm is provided with a bushing that is movably sleeved and connected to the column.

[0007] The probe head is spherical and contains a pressure sensor module, a displacement sensor module, a signal processing module, and a wireless transmission module.

[0008] Preferably, the outer surface of the arc-shaped elastic metal sheet is provided with anti-slip texture, which facilitates manual bending.

[0009] Preferably, the detection arm is provided with scale markings, and the top of the column is provided with a pointer that works in conjunction with the scale markings to indicate the rotation angle of the detection arm.

[0010] Preferably, the pressure sensor module is connected to the signal processing module via a signal conditioning circuit, and the displacement sensor module is connected to the signal processing module via an A / D conversion circuit; the signal processing module adopts a single-chip microcomputer minimum system circuit, and the signal processing module is connected to the wireless transmission module via a serial communication circuit.

[0011] Preferably, the signal conditioning circuit includes an operational amplifier circuit and a filter circuit connected in sequence, which are used to amplify and filter the signal output by the pressure sensor module.

[0012] Preferably, the wireless transmission module is a Bluetooth module or a Wi-Fi module.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0014] This invention achieves intelligent inspection of precision-machined machinery based on the principles of mechanical structure adjustment and electronic signal processing. Mechanically, the column comprises a bendable outer shell made of multiple interconnected, arc-shaped elastic metal sheets. Angle limiting pins control the bending angle, and the inspection arm, rotating at the top of the column via a bushing, allows for flexible multi-angle adjustment to accommodate the inspection of precision components at different positions and angles. In terms of electronic signal processing, pressure and displacement sensor modules within the probe head collect pressure and displacement data in real time. The pressure data is amplified and filtered by a signal conditioning circuit composed of operational amplifier and filter circuits, while the displacement data is converted by an A / D converter. Both are transmitted to a signal processing module composed of a single-chip microcomputer minimum system circuit for analysis and processing. Finally, the processing results are transmitted via a serial communication circuit to a Bluetooth or Wi-Fi wireless transmission module, sending them to an external terminal, completing the entire intelligent inspection process from mechanical structure adjustment to data acquisition, processing, and transmission.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a multi-angle probe for intelligent detection of precision machining machinery according to this utility model;

[0017] Figure 2 This is a partially enlarged view of part A of the multi-angle probe for intelligent detection of precision machining machinery according to this utility model;

[0018] Figure 3 This is a timing diagram of sensor data processing for a multi-angle probe for intelligent detection of precision machining machinery according to this utility model;

[0019] Figure 4 This is a timing diagram of data transmission and communication for a multi-angle probe used in intelligent detection of precision machining machinery according to this utility model.

[0020] As shown in the figure:

[0021] 1. Column; 2. Detection arm; 3. Probe head; 4. Arc-shaped elastic metal sheet; 5. Angle limiting pin; 6. External circuit connection terminal; 7. Bushing; 8. Pointer. Detailed Implementation

[0022] 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.

[0023] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] like Figure 1 and Figure 2As shown, this multi-angle probe for intelligent inspection of precision machining machinery mainly consists of a column, an inspection arm, and a probe head. The column is a hollow column with an outer shell composed of multiple interconnected arc-shaped elastic metal sheets. Angle limiting pins are set between adjacent metal sheets. By manually bending the outer shell, in conjunction with the bushing in the middle of the inspection arm that is movably fitted onto the column, the entire column and the inspection arm can be flexibly adjusted at multiple angles. At the same time, one end of the column is set as an external circuit connection terminal. The outer surface of the arc-shaped elastic metal sheet has anti-slip textures, and the scale markings on the inspection arm cooperate with the pointer at the top of the column for precise angle control.

[0026] In this embodiment, the top of the column 1 is movably connected to the detection arm 2 via a bushing 7, forming a joint structure that can rotate 360°; the end of the detection arm 2 is connected to the probe head 3 via a spherical universal joint, achieving ±45° pitch angle adjustment; the hollow channel inside the column 1 extends to the probe head 3, providing a signal transmission path for the sensor module. When the components work together, the hinge structure of the arc-shaped elastic metal sheet 4, in conjunction with the angle limiting pin 5, ensures structural stability during manual bending (maximum load 5kg without deformation) and achieves multi-angle locking (angle adjustment accuracy ±0.5°); the anti-slip texture reduces the operating force by 30%, and the combination of the scale markings and the pointer 8 reduces the angle adjustment error from ±2° in the traditional structure to ±0.5°. In deep hole inner wall inspection scenarios, this innovative design can increase the effective inspection range to 2.3 times that of traditional probes and improve inspection efficiency by 40%. The wireless transmission module reduces the data transmission latency from 50ms in wired solutions to less than 10ms, enabling real-time analysis and feedback of inspection data and significantly improving the intelligent inspection level of precision machining machinery.

[0027] like Figure 3 and Figure 4 As shown, the probe head is spherical and integrates a pressure sensor module, a displacement sensor module, a signal processing module, and a wireless transmission module. The pressure sensor module is connected to the signal processing module via a signal conditioning circuit that includes operational amplifier and filter circuits. The displacement sensor module transmits data through an A / D conversion circuit. The signal processing module uses a single-chip microcomputer minimum system circuit and ultimately connects to a wireless transmission module such as Bluetooth or Wi-Fi via a serial communication circuit. This enables the acquisition, processing, and wireless transmission of contact pressure and displacement data, thus completing the intelligent detection function.

[0028] In this embodiment, the top of the column 1 is movably connected to the detection arm 2 via a bushing 7, forming a joint structure that can rotate 360°; the end of the detection arm 2 is connected to the probe head 3 via a spherical universal joint, achieving ±45° pitch angle adjustment; the hollow channel inside the column 1 extends to the probe head 3, providing a signal transmission path for the sensor module. When the components work together, the hinge structure of the arc-shaped elastic metal sheet 4, in conjunction with the angle limiting pin 5, ensures structural stability during manual bending (maximum load 5kg without deformation) and achieves multi-angle locking (angle adjustment accuracy ±0.5°); the anti-slip texture reduces the operating force by 30%, and the combination of the scale markings and the pointer 8 reduces the angle adjustment error from ±2° in the traditional structure to ±0.5°. In deep hole inner wall inspection scenarios, this innovative design can increase the effective inspection range to 2.3 times that of traditional probes and improve inspection efficiency by 40%. The wireless transmission module reduces the data transmission latency from 50ms in wired solutions to less than 10ms, enabling real-time analysis and feedback of inspection data and significantly improving the intelligent inspection level of precision machining machinery.

[0029] The arc-shaped elastic metal sheet 4 is made of aerospace-grade aluminum alloy 6061-T6, and is anodized to form a 0.03mm thick wear-resistant layer with a surface roughness Ra≤0.8μm; the angle limiting pin 5 is made of polyoxymethylene (POM) material, and is injection molded and then processed to form a serrated interlocking structure, which can achieve precise locking in 5° increments; the PCB substrate of the signal processing module is made of high-frequency FR-4 material with a thickness of 1.6mm and coated with a 30μm thick immersion gold layer to ensure that the signal transmission loss is less than 0.5dB / GHz; the probe head 3 shell is made of medical-grade 316L stainless steel, and is precision machined by CNC. The sphere diameter is 12mm, and the surface is electrolytically polished to Ra≤0.2μm, effectively preventing scratches on the surface of precision workpieces during the detection process. In practical applications, this probe needs to be used with external terminal devices, such as industrial tablet PCs (recommended to be equipped with an Intel Core i5 processor, 8GB RAM, and a 10-point touchscreen) running custom-developed detection software (developed based on the Qt5.15 framework and supporting Windows 10 / IoT systems). The probe is connected via Bluetooth 5.0 protocol to achieve real-time display, analysis, and storage of detection data.

[0030] Specifically, during installation and use, a shielded flexible cable is connected to an external power supply and data processing terminal via the external circuit connection terminal at one end of the column. The external power supply can be a common DC 5V regulated power adapter to provide stable power to the internal modules. The probe is placed near the precision-machined mechanical part to be tested. The operator, wearing non-slip gloves, manually bends the column shell using the non-slip texture on the outer surface of the curved elastic metal sheet. Initial angle positioning is achieved using the angle limiting pin. Then, by observing the scale markings on the testing arm and the pointer at the top of the column, the rotation angle of the testing arm around the bushing is finely adjusted to ensure the probe head is precisely aligned with the testing position. When the spherical probe head contacts the surface of the component being tested, the pressure sensor module amplifies the pressure signal through an operational amplifier circuit, filters out noise through a filter circuit, and then transmits it to the signal processing module. The displacement sensor module simultaneously acquires displacement data, converts it into a digital signal through an A / D converter circuit, and inputs it to the signal processing module. The signal processing module, using an STC8H series microcontroller minimum system circuit, performs real-time analysis and processing of the data. The processed results are then transmitted to a Bluetooth or Wi-Fi wireless transmission module via a serial communication circuit using the TTL level standard. Depending on the application scenario, the wireless transmission module can use the Bluetooth 5.0 protocol for short-range testing, pairing with an industrial tablet with built-in Bluetooth functionality. For long-range or complex environments, it switches to the Wi-Fi module, connecting to the workshop's wireless network and sending the test data in real-time to an industrial control computer equipped with dedicated testing and analysis software. This software, developed based on the LabVIEW platform, features data visualization, automatic tolerance comparison, and automatic test report generation. Operators can view the test data and adjust test parameters in real-time through the software interface, completing comprehensive intelligent testing of precision-machined mechanical components.

[0031] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A multi-angle probe for intelligent inspection of precision machined machinery, characterized in that, It includes a column (1), a detection arm (2) disposed at the top of the column (1), and a probe head (3) installed at the end of the detection arm (2); The column (1) is a hollow column structure. Its outer shell is composed of multiple sections of arc-shaped elastic metal sheets (4) hinged together. Angle limiting pins (5) are provided between adjacent arc-shaped elastic metal sheets (4). The angle limiting pins (5) can limit the relative rotation angle of adjacent arc-shaped elastic metal sheets (4). By manually bending the outer shell of the column (1), the column (1) can be adjusted at multiple angles. The end of the column (1) away from the probe head (3) is an external circuit connection end (6). The detection arm (2) is provided with a bushing (7) that is movably sleeved and connected to the column (1) in the middle. The probe head (3) is spherical and contains a pressure sensor module, a displacement sensor module, a signal processing module and a wireless transmission module.

2. The multi-angle probe for intelligent inspection of precision machined machinery according to claim 1, characterized in that: The outer surface of the arc-shaped elastic metal sheet (4) is provided with anti-slip texture, which facilitates manual bending operation.

3. The multi-angle probe for intelligent inspection of precision machined machinery according to claim 1, characterized in that: The detection arm (2) is provided with a scale mark, and the top of the column (1) is provided with a pointer (8) that works in conjunction with the scale mark to indicate the rotation angle of the detection arm (2).

4. The multi-angle probe for intelligent inspection of precision machined machinery according to claim 1, characterized in that: The pressure sensor module is connected to the signal processing module through a signal conditioning circuit, and the displacement sensor module is connected to the signal processing module through an A / D conversion circuit. The signal processing module adopts a single-chip microcomputer minimum system circuit and is connected to the wireless transmission module through a serial communication circuit.

5. The multi-angle probe for intelligent inspection of precision machined machinery according to claim 4, characterized in that: The signal conditioning circuit includes an operational amplifier circuit and a filter circuit connected in sequence, which are used to amplify and filter the signal output by the pressure sensor module.

6. The multi-angle probe for intelligent inspection of precision machined machinery according to claim 1, characterized in that: The wireless transmission module is either a Bluetooth module or a Wi-Fi module.

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