Centering and positioning device for MCS sensor core machining
By using an image positioning device in the processing of the MCS sensor core, the fixture is adjusted in real time to ensure that the center of the sensitive grid pattern coincides with the center of the cross pattern, thus solving the problem of concentricity error between the center of the blind hole and the center of the sensitive grid pattern, and improving the accuracy and linearity of the sensor.
Patent Information
- Application Number
- CN202423233638.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In the machining of MCS sensor cores, the concentricity error between the center of the blind hole and the center of the sensitive grid pattern makes it difficult to guarantee the accuracy of the sensor. Existing machine tools have large clamping position errors, making it difficult to ensure that the center of the blind hole coincides with the center of the sensitive grid pattern.
An image positioning device, including an image acquisition module and a display screen, is used to capture and display the sensitive grid pattern on the end face of the sensor core in real time. The control module adjusts the fixture to make the center of the cross pattern coincide with the center of the sensitive grid pattern, ensuring that the center of the outer diameter of the sensor core coincides with the center of the sensitive grid pattern, thereby ensuring center alignment when processing blind holes.
This improved the sensor's machining accuracy, ensuring the coaxiality between the blind hole center and the sensitive grid pattern center, thus enhancing the sensor's linearity and overall accuracy.
Smart Images
Figure CN223588800U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sensor processing technology, specifically to a centering and positioning device for processing MCS sensor cores. Background Technology
[0002] When processing the MCS sensor, the steel plate material and the sensitive material layer used in the MCS sensor are first surface treated. Then, a fusion material layer is laid on the steel plate material, followed by a sensitive material layer. After multiple processes such as heating, pressurizing, and compounding, a multi-layer composite of the pressure sensor is formed. The surface of the sensitive material layer is etched to form a sensitive grid pattern. Then, the composite is cut into multiple cylindrical cores. The cores are clamped by a machine tool, and blind holes are processed on multiple cores. The mesh is located on the back of the sensitive grid, and the bottom of the blind holes forms the pressure-sensing diaphragm of the MCS sensor.
[0003] When machining blind holes, the center of the blind hole needs to coincide with the center of the etched sensitive grid pattern. The concentricity error between the center of the sensitive grid pattern and the center of the blind hole directly affects the linearity of the sensor. However, due to the large error during the cutting of the composite, the outer diameter center of the core does not coincide with the pattern center of the sensitive grid. When the machine tool is machining the blind hole, the clamping position is the outer diameter of the core, and the outer diameter of the core is used as the positioning reference. This results in the machined blind hole being coaxial with the outer diameter of the core, and the center of the blind hole not coinciding with the pattern center of the sensitive grid. As a result, the linearity of the sensor is difficult to guarantee, which seriously affects the accuracy requirements of the sensor. Utility Model Content
[0004] To improve the accuracy of sensors, this application provides a centering and positioning device for machining MCS sensor cores.
[0005] The centering and positioning device for MCS sensor core processing provided in this application adopts the following technical solution:
[0006] A centering and positioning device for machining MCS sensor cores includes: a machine tool and an image positioning device; the image positioning device is fixedly mounted on the machine tool, which is used to clamp the sensor core and machine the outer diameter of the sensor core.
[0007] In one possible implementation, the machine tool includes a bed, a headstock, a fixture, and a tailstock; the headstock and the tailstock are both fixedly connected to the bed, the fixture is rotatably mounted on the headstock, and the axis of the fixture coincides with the axis of the tailstock; the fixture is used to hold the sensor chip.
[0008] The image positioning device is fixedly mounted on the tailstock.
[0009] In a possible implementation, the image positioning device comprises an image acquisition module and a display screen; the image acquisition module is fixedly connected with the tailstock, and an axis of the image acquisition module coincides with an axis of the clamp; the image acquisition module is configured to capture an image of an end face of a sensor core body clamped on the clamp in real time, and the end face of the sensor core body is provided with a sensitive grid pattern;
[0010] The display screen is electrically connected with the image acquisition module, and the display screen is located outside the machine tool; the display screen is configured to display the image of the end face of the sensor core body captured by the image acquisition module in real time.
[0011] In a possible implementation, a cross pattern is displayed on the display screen; when the axis of the image acquisition module coincides with the axis of the sensor core body clamped on the clamp, the center of the cross pattern coincides with the center of the captured sensitive grid pattern.
[0012] In a possible implementation, the device further comprises a control module, which is electrically connected with the machine tool and the display screen; the control module is configured to receive the position coordinates of the center of the cross pattern and the center of the sensitive grid pattern on the display screen, and control the machine tool to adjust the clamp so that the center of the cross pattern coincides with the center of the captured sensitive grid pattern on the display screen.
[0013] By using the centering positioning device for processing of a sensor core body provided in the present application, before processing of a blind hole of the sensor core body, the image acquisition module is first installed on the tailstock, the position of the image acquisition module is calibrated, so that the axis of the image acquisition module coincides with the axis of the clamp, the sensor core body is clamped on the clamp, the sensitive grid pattern of the end face of the sensor core body is exposed and faces the tailstock, the display screen is electrically connected with the image acquisition module, the image acquisition module captures the sensitive grid pattern of the end face of the sensor core body, and displays the captured image on the display screen in real time; the display screen synchronously displays a cross pattern, the control module receives the coordinate information of the center of the sensitive grid pattern and the center of the cross pattern on the display screen, and controls the machine tool to adjust the clamp, so that the center of the sensitive grid pattern captured by the image acquisition module moves on the display screen until the center of the sensitive grid pattern coincides with the center of the cross pattern on the display screen; then, the machine tool is operated to process the outer diameter of the sensor core body, so that the center of the outer diameter of the sensor core body coincides with the center of the sensitive grid pattern; finally, the processed sensor core body is clamped by a drilling device to process a blind hole at the end of the sensor core body away from the sensitive grid pattern, so as to facilitate the coincidence of the center of the blind hole and the center of the sensitive grid pattern, and thus the precision of the sensor is improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, but are not for restricting the present application;
[0015] Figure 1 is the overall structure schematic diagram of the centering positioning device for MCS sensor core processing.
[0016] Figure 2 is the image of the display screen after the sensor core and the image acquisition module axis coincide.
[0017] Figure 3 is the image of the display screen after the outer diameter processing of the sensor core is completed.
[0018] BRIEF DESCRIPTION OF DRAWINGS: 1, machine tool; 11, bed; 12, headstock; 13, fixture; 14, tailstock; 2, image positioning device; 21, image acquisition module; 22, display screen; 221, cross pattern; 3, sensor core; 31, sensitive grid. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0020] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.
[0021] The following will be described in combination with the drawings in the present application Figures 1-3 The present application will be further described in detail.
[0022] The embodiments of the present application disclose a centering positioning device for MCS sensor core processing.
[0023] Reference Figure 1 and Figure 2The application discloses a centering and positioning device for processing of an MCS sensor core body, which comprises a machine tool 1 and an image positioning device 2; the image positioning device 2 is fixedly arranged on the machine tool 1, and the machine tool 1 is used for clamping the sensor core body 3 and processing the outer diameter of the sensor core body 3. The machine tool 1 comprises a bed body 11, a headstock 12, a clamp 13 and a tailstock 14; the headstock 12 and the tailstock 14 are fixedly arranged on the top of the bed body 11, the clamp 13 is rotatably arranged on the headstock 12, the axis of the clamp 13 is coincident with the axis of the tailstock 14, and the clamp 13 is used for clamping the sensor core body 3; the image positioning device 2 is fixedly arranged on the tailstock 14, and the image positioning device 2 comprises an image acquisition module 21 and a display screen 22; the image acquisition module 21 is fixedly connected with the tailstock 14, the axis of the image acquisition module 21 is coincident with the axis of the clamp 13, the image acquisition module 21 is used for shooting the end surface image of the sensor core body 3 clamped on the clamp 13 in real time, and the end surface of the sensor core body 3 is provided with a sensitive grid 31 pattern; the display screen 22 is electrically connected with the image acquisition module 21, the display screen 22 is located outside the machine tool 1, and the display screen 22 is used for displaying the end surface image of the sensor core body 3 shot by the image acquisition module 21 in real time. A cross pattern 221 is displayed on the display screen 22, and when the axis of the image acquisition module 21 is coincident with the axis of the sensor core body 3 clamped on the clamp 13, the center of the cross pattern 221 is coincident with the center of the sensitive grid 31 pattern shot.
[0024] In particular, the application further comprises a control module (not shown in the drawings), which is electrically connected with the machine tool and the display screen, can receive the position coordinates of the center of the cross pattern and the center of the sensitive grid pattern on the display screen, and control the machine tool to adjust the clamp so that the center of the cross pattern is coincident with the center of the sensitive grid pattern shot on the display screen.
[0025] The application discloses a centering and positioning device for processing of an MCS sensor core body, which comprises a machine tool 1 and an image positioning device 2; the image positioning device 2 is fixedly arranged on the machine tool 1, and the machine tool 1 is used for clamping the sensor core body 3 and processing the outer diameter of the sensor core body 3. The machine tool 1 comprises a bed body 11, a headstock 12, a clamp 13 and a tailstock 14; the headstock 12 and the tailstock 14 are fixedly arranged on the top of the bed body 11, the clamp 13 is rotatably arranged on the headstock 12, the axis of the clamp 13 is coincident with the axis of the tailstock 14, and the clamp 13 is used for clamping the sensor core body 3; the image positioning device 2 is fixedly arranged on the tailstock 14, and the image positioning device 2 comprises an image acquisition module 21 and a display screen 22; the image acquisition module 21 is fixedly connected with the tailstock 14, the axis of the image acquisition module 21 is coincident with the axis of the clamp 13, the image acquisition module 21 is used for shooting the end surface image of the sensor core body 3 clamped on the clamp 13 in real time, and the end surface of the sensor core body 3 is provided with a sensitive grid 31 pattern; the display screen 22 is electrically connected with the image acquisition module 21, the display screen 22 is located outside the machine tool 1, and the display screen 22 is used for displaying the end surface image of the sensor core body 3 shot by the image acquisition module 21 in real time. A cross pattern 221 is displayed on the display screen 22, and when the axis of the image acquisition module 21 is coincident with the axis of the sensor core body 3 clamped on the clamp 13, the center of the cross pattern 221 is coincident with the center of the sensitive grid 31 pattern shot.
[0026] In the position alignment of the sensor core 3 and the outer diameter processing, the sensor core 3 is clamped on the clamp 13, the sensitive grid 31 pattern of the end face of the sensor core 3 is exposed, is arranged towards the tailstock 14, the image acquisition module 21 shoots the sensitive grid 31 pattern of the end face of the sensor core 3, and the collected image is displayed on the display screen 22 in real time, the cross pattern 221 is synchronously displayed on the display screen 22, the control module receives the coordinate information of the center of the sensitive grid 31 pattern and the center of the cross pattern 221 on the display screen 22, and controls the machine tool 1 to adjust the clamp 13, so that the center of the sensitive grid 31 shot by the image acquisition module 21 moves on the display screen 22, until the center of the sensitive grid 31 pattern and the center of the cross pattern 221 coincide on the display screen (as shown in Figure 2 Then, the machine tool 1 is operated to process the outer diameter of the sensor core 3, so that the outer diameter center of the sensor core 3 coincides with the center of the sensitive grid 31 pattern (as shown in Figure 3 Finally, the outer diameter of the processed sensor core 3 is clamped by the drilling equipment, and the blind hole processing is performed on the end of the sensor core 3 away from the sensitive grid 31 pattern, so as to facilitate the coincidence of the center of the blind hole and the center of the sensitive grid 31 pattern, and to improve the precision of the sensor.
[0027] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. The present application is not limited to the exact structure described above and shown in the drawings, and the specific implementation of the present application should not be limited to the above description. For ordinary skilled in the art to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be considered to fall within the scope of protection of the present application.
Claims
1. A centering and positioning device for machining MCS sensor cores, characterized in that, include: The machine tool (1) and the image positioning device (2) are fixedly mounted on the machine tool (1). The machine tool (1) is used to hold the sensor core (3) and process the outer diameter of the sensor core (3).
2. The centering and positioning device for processing MCS sensor cores according to claim 1, characterized in that, The machine tool (1) includes a bed (11), a headstock (12), a fixture (13), and a tailstock (14); the headstock (12) and the tailstock (14) are both fixedly connected to the bed (11), the fixture (13) is rotatably mounted on the headstock (12), and the axis of the fixture (13) coincides with the axis of the tailstock (14), the fixture (13) is used to hold the sensor core (3); The image positioning device (2) is fixedly mounted on the tailstock (14).
3. The centering and positioning device for processing MCS sensor cores according to claim 2, characterized in that, The image positioning device (2) includes an image acquisition module (21) and a display screen (22); the image acquisition module (21) is fixedly connected to the tailstock (14), and the axis of the image acquisition module (21) coincides with the axis of the clamp (13). The image acquisition module (21) is used to capture images of the end face of the sensor core (3) clamped on the clamp (13) in real time. The end face of the sensor core (3) is provided with a sensitive grid (31) pattern. The display screen (22) is electrically connected to the image acquisition module (21). The display screen (22) is located outside the machine tool (1). The display screen (22) is used to display the end face image of the sensor core (3) captured by the image acquisition module (21) in real time.
4. The centering and positioning device for processing MCS sensor cores according to claim 3, characterized in that, The display screen (22) shows a cross pattern (221). When the axis of the image acquisition module (21) coincides with the axis of the sensor core (3) held on the clamp (13), the center of the cross pattern (221) coincides with the center of the captured sensitive grid (31) pattern.
5. The centering and positioning device for processing MCS sensor cores according to claim 4, characterized in that, It also includes a control module, which is electrically connected to the machine tool (1) and the display screen (22). The control module is used to receive the position coordinates of the center of the cross pattern (221) and the center of the sensitive grid (31) pattern on the display screen (22), and control the machine tool (1) to adjust the fixture so that the center of the cross pattern (221) coincides with the center of the captured sensitive grid (31) pattern on the display screen.