Detector for pre-judging press-in force during mechanical installation interference fit
By using detectors including motherboard, clamping structure, transverse structure and detection structure during the assembly process of automobile fuel injector parts, the accurate detection of pressing force and the intuitive display of starting point positions are achieved, which solves the problems of inaccurate and unstable pressure force detection in the prior art, and improves the identification and control capabilities of the production end.
Patent Information
- Application Number
- CN202421731975.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In the prior art, in the interference fit and assembly process of automobile fuel injector parts, it is difficult to accurately detect the pressing force, which leads to difficulty in identifying and controlling the production-end-end parts, and the problem of unstable pressing force caused by detection errors is difficult to solve.
A detector including a main board, a clamping structure, a transverse structure and a detection structure is adopted. The first telescopic rod drives the clamping plate to move for clamping parts, and the second telescopic rod drives the mobile frame down and combines the motor drive of the transverse structure to realize the detection and fit verification of the part profile, intuitively display the position of the starting point, and eliminate the unstable pressure force caused by detection errors.
It realizes accurate detection of the pressing force during the assembly of automobile fuel injector parts and intuitive display of the starting point position, eliminating the problem of instability of pressing force caused by detection errors, and improving the identification and control capabilities of the production end.
Smart Images
Figure CN222912944U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical installation, in particular to a detector for predicting the pressing force during interference fit of mechanical installation. Background Art
[0002] The automobile fuel injector project involves the press-fitting process of parts, which is the interference fit assembly method. Relying on the interference value between the shaft and the hole, elastic pressure is generated between the surfaces of the parts after assembly, thereby obtaining a tight connection and ensuring the sealing of the client parts. The detection of the interference value pressure requires the use of a detector to detect it.
[0003] In the prior art, the Mahr profilometer is used for evaluation, detection and production control, and the pressing force curve is a real-time value monitored online by the client, which is not conducive to the identification of out-of-tolerance parts at the production end and the effective prediction and control at the production end. In addition, when the Mahr profilometer is used to monitor the contour curve, the sampling point interval of the special contour surface is less than 1.2mm, and the numerical accuracy is greatly affected by the different sampling point positions. Utility Model Content
[0004] The utility model mainly provides a method of using fitting verification, which intuitively reflects the position of the starting point during assembly pressing and performs contour fitting and benchmarking through qualified parts, thereby eliminating the detector of unstable pressing force caused by fine-tuning due to detection errors.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a detector for predicting the pressing force during mechanical installation of interference fit, comprising a main board, a first fixed block is fixed to the top of the main board, a clamping structure for clamping parts is provided at the top of the first fixed block, a second fixed block is fixed to the top of the main board on one side of the first fixed block, a bracket is provided at the top of the second fixed block, a transverse movement structure for driving the bracket to move transversely is provided in the second fixed block, a second telescopic rod is installed on the inner top wall of the bracket, a mobile frame is fixed to the output end of the second telescopic rod, a connecting column is fixed to the end of the mobile frame facing the first fixed block, a detection structure for detecting the contour of the part is provided at the end of the connecting column away from the moving frame, a display screen is installed at the top of the main board, and a controller is installed at one end of the main board.
[0006] Preferably, the clamping structure includes a fixing plate fixed to one side of the top end of the first fixing block, a first telescopic rod is installed at one end of the fixing plate, a first clamping plate is fixed to the output end of the first telescopic rod, and a second clamping plate matching the first clamping plate is fixed to the other side of the top end of the first fixing block. Through the operation of the first telescopic rod, the first clamping plate can be driven to move in the direction of the second clamping plate, thereby clamping and fixing the parts to be inspected between the first clamping plate and the second clamping plate.
[0007] Preferably, the transverse movement structure includes a motor arranged at one end of the second fixed block, one end of the motor passes through the second fixed block and is fixed with a screw, a movable plate is threadedly connected to the outer wall of the screw, both ends of the movable plate are slidably connected to the limiting columns, a connecting block is fixed to the top of the movable plate, the top of the connecting block passes through the top of the second fixed block and is fixed to the bracket, and the operation of the motor can drive the screw to rotate, so that the movable plate moves under the limit of the limiting column, thereby driving the bracket connected to the top of the connecting block to move horizontally.
[0008] Preferably, the detection structure includes a detector arranged at one end of the connecting column away from the movable frame, and a fixed column is fixed to the other end of the detector. A sliding column is slidably connected inside the fixed column, and the bottom end of the sliding column adheres to the surface of the part due to gravity. When the fixed column moves laterally, the sliding column will slide up and down in the fixed column due to the protrusions on the surface of the part. At this time, the detector will detect the amplitude of the up and down sliding of the sliding column and display it on the display screen, thereby achieving the effect of detecting the external contour of the part.
[0009] Preferably, a movable groove matching the connecting block is provided at the top of the second fixed block, a support plate is fixed to one end of the second fixed block, the motor is installed at the top of the support plate, the end of the screw away from the motor is rotatably connected to the second fixed block, and both ends of the limit column are fixed to the second fixed block. Through the setting of the movable groove, the connecting block can stably move laterally in the movable groove.
[0010] Preferably, a stud is fixed to one end of the detector away from the fixing column, and the stud is threadedly connected to the connecting column. Through the setting of the stud, the angle of the detector can be adjusted, and the detector can be installed and disassembled at any time, which is convenient for maintenance and replacement.
[0011] Compared with the prior art, the advantages and positive effects of the utility model are:
[0012] The first and second clamping plates are moved in a direction opposite to the first and second clamping plates, thereby clamping and fixing the parts to be inspected between the first and second clamping plates. At this time, the second clamping plates are driven to descend through the operation of the second clamping plates, thereby driving the bottom end of the sliding column to fit the surface of the parts. The operation of the motor can drive the screw to rotate, so that the movable plate moves under the limit of the limit column, thereby driving the bracket connected to the top of the connecting block to move horizontally, thereby driving the sliding column to move horizontally. The sliding column will slide up and down in the fixed column due to the protrusion on the surface of the part. At this time, the detector will detect the amplitude of the sliding column sliding up and down, and display it on the display screen in the form of a contour curve, thereby achieving the effect of detecting the external contour of the part. This method no longer relies solely on the contour evaluation method, but adopts the contour fitting evaluation method of the special contour surface, and uses the fitting verification method to intuitively reflect the position of the starting point during assembly pressing, and uses qualified parts for contour fitting and benchmarking to eliminate the unstable state of the pressing force caused by fine-tuning due to detection errors. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 A three-dimensional diagram of a detector for predicting the pressing force when the mechanical installation interference fit is proposed in the utility model;
[0014] Figure 2 A three-dimensional diagram of the clamping structure of the detector for predicting the pressing force when the mechanical installation interference fit is proposed in the utility model;
[0015] Figure 3 This is a cross-sectional view of the transverse displacement structure for predicting the pressing force when the mechanical installation interference fit is proposed in the utility model;
[0016] Figure 4 The utility model provides a schematic diagram of a detection structure for predicting the pressing force during interference fit in mechanical installation.
[0017] Legend: 1. Main board; 2. First fixed block; 3. Clamping structure; 301. Fixed plate; 302. First telescopic rod; 303. First clamping plate; 304. Second clamping plate; 4. Second fixed block; 5. Bracket; 6. Transverse structure; 601. Motor; 602. Screw; 603. Moving plate; 604. Limiting column; 605. Connecting block; 7. Moving slot; 8. Support plate; 9. Second telescopic rod; 10. Moving frame; 11. Connecting column; 12. Detection structure; 1201. Detector; 1202. Fixed column; 1203. Sliding column; 13. Stud; 14. Display screen; 15. Controller. DETAILED DESCRIPTION
[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.
[0020] See also Figure 1-Figure 4 The utility model provides a technical solution: a detector for predicting the pressing force when mechanically installing interference fit, comprising a main board 1, a first fixed block 2 is fixed to the top of the main board 1, a clamping structure 3 for clamping parts is provided on the top of the first fixed block 2, a second fixed block 4 is fixed to the top of the main board 1 on one side of the first fixed block 2, a bracket 5 is provided on the top of the second fixed block 4, a lateral movement structure 6 for driving the bracket 5 to move horizontally is provided in the second fixed block 4, a second telescopic rod 9 is installed on the inner top wall of the bracket 5, a mobile frame 10 is fixed to the output end of the second telescopic rod 9, and a connecting column 1 is fixed to the end of the mobile frame 10 facing the first fixed block 2 1, a detection structure 12 for detecting the contour of the part is provided at one end of the connecting column 11 away from the moving frame 10, a display screen 14 is installed at the top of the main board 1, and a controller 15 is installed at one end of the main board 1. Through the operation of the clamping structure 3, the part to be detected can be clamped and fixed to prevent it from shaking or moving. Through the operation of the second telescopic rod 9, the moving frame 10 can be driven to descend, thereby driving the detection structure 12 to descend, and then through the coordinated operation of the transverse structure 6, the external contour of the part is detected and displayed on the display screen 14. The controller 15 can control the operation of each component in the device.
[0021] like Figure 1-4 As shown, the clamping structure 3 includes a fixing plate 301 fixed to one side of the top end of the first fixing block 2, a first telescopic rod 302 is installed at one end of the fixing plate 301, a first clamping plate 303 is fixed to the output end of the first telescopic rod 302, and a second clamping plate 304 matching the first clamping plate 303 is fixed to the other side of the top end of the first fixing block 2. Through the operation of the first telescopic rod 302, the first clamping plate 303 can be driven to move in the direction of the second clamping plate 304, so as to clamp and fix the parts to be inspected between the first clamping plate 303 and the second clamping plate 304.
[0022] like Figure 1-4As shown, the transverse movement structure 6 includes a motor 601 arranged at one end of the second fixed block 4, one end of the motor 601 passes through the second fixed block 4 and is fixed with a screw 602, a movable plate 603 is threadedly connected to the outer wall of the screw 602, both ends of the movable plate 603 are slidably connected to the limiting column 604, and a connecting block 605 is fixed to the top of the movable plate 603, the top of the connecting block 605 passes through the top of the second fixed block 4 and is fixed to the bracket 5, through the operation of the motor 601, it can drive the screw 602 to rotate, so that the movable plate 603 moves under the limit of the limiting column 604, thereby driving the bracket 5 connected to the top of the connecting block 605 to move horizontally.
[0023] like Figure 1-4 As shown, the detection structure 12 includes a detector 1201 arranged at one end of the connecting column 11 away from the moving frame 10, and a fixed column 1202 is fixed to the other end of the detector 1201. A sliding column 1203 is slidably connected inside the fixed column 1202. The bottom end of the sliding column 1203 adheres to the surface of the part due to gravity. When the fixed column 1202 moves horizontally, the sliding column 1203 will slide up and down in the fixed column 1202 due to the protrusions on the surface of the part. At this time, the detector 1201 will detect the amplitude of the up and down sliding of the sliding column 1203 and display it on the display screen 14, thereby achieving the effect of detecting the external contour of the part.
[0024] like Figure 1-4 As shown, a movable groove 7 matching the connecting block 605 is provided at the top of the second fixed block 4, a support plate 8 is fixed to one end of the second fixed block 4, a motor 601 is installed at the top of the support plate 8, an end of the screw 602 away from the motor 601 is rotatably connected to the second fixed block 4, and both ends of the limiting column 604 are fixed to the second fixed block 4. By setting the movable groove 7, the connecting block 605 can stably move laterally in the movable groove 7.
[0025] like Figure 1-4 As shown, a stud 13 is fixed to one end of the detector 1201 away from the fixing column 1202, and the stud 13 is threadedly connected to the connecting column 11. Through the setting of the stud 13, the angle of the detector 1201 can be adjusted, and the detector 1201 can be installed and disassembled at any time, which is convenient for maintenance and replacement.
[0026] The method of use and working principle of this device: When the device is in use, the operation of the first telescopic rod 302 can drive the first clamping plate 303 to move in the direction of the second clamping plate 304, so that the parts to be inspected between the first clamping plate 303 and the second clamping plate 304 are clamped and fixed. At this time, the operation of the second telescopic rod 9 drives the movable frame 10 to descend, thereby driving the bottom end of the sliding column 1203 to fit the surface of the part. The operation of the motor 601 can drive the screw 602 to rotate, so that the movable plate 603 moves under the limit of the limit column 604, thereby driving the bracket 5 connected to the top of the connecting block 605 to move horizontally, thereby driving the sliding column 1203 to move horizontally. Due to the protrusion on the surface of the part, the sliding column 1203 will slide up and down in the fixed column 1202. At this time, the detector 1201 will detect the amplitude of the up and down sliding of the sliding column 1203 and display it on the display screen 14 in the form of a contour curve.
[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A detector for predicting the pressing force during mechanical installation interference fit, comprising a main board (1), characterized in that: A first fixed block (2) is fixed to the top of the main board (1), a clamping structure (3) for clamping parts is provided at the top of the first fixed block (2), a second fixed block (4) is fixed to the top of the main board (1) on one side of the first fixed block (2), a bracket (5) is provided at the top of the second fixed block (4), a lateral movement structure (6) for driving the bracket (5) to move horizontally is provided inside the second fixed block (4), a second telescopic rod (9) is installed on the inner top wall of the bracket (5), a mobile frame (10) is fixed to the output end of the second telescopic rod (9), a connecting column (11) is fixed to one end of the mobile frame (10) facing the first fixed block (2), a detection structure (12) for detecting the contour of parts is provided at one end of the connecting column (11) away from the mobile frame (10), a display screen (14) is installed at the top of the main board (1), and a controller (15) is installed at one end of the main board (1).
2. The detector for predicting the pressing force during mechanical installation interference fit according to claim 1, characterized in that: The clamping structure (3) comprises a fixing plate (301) fixed to one side of the top end of the first fixing block (2); a first telescopic rod (302) is mounted on one end of the fixing plate (301); a first clamping plate (303) is fixed to the output end of the first telescopic rod (302); and a second clamping plate (304) matching the first clamping plate (303) is fixed to the other side of the top end of the first fixing block (2).
3. The detector for predicting the pressing force during mechanical installation interference fit according to claim 1, characterized in that: The transverse movement structure (6) comprises a motor (601) arranged at one end of the second fixed block (4); one end of the motor (601) passes through the second fixed block (4) and is fixed with a screw rod (602); a movable plate (603) is threadedly connected to the outer wall of the screw rod (602); both ends of the movable plate (603) are slidably connected to limit posts (604); a connecting block (605) is fixed to the top of the movable plate (603); the top of the connecting block (605) passes through the top of the second fixed block (4) and is fixed to the bracket (5).
4. The detector for predicting the pressing force during mechanical installation interference fit according to claim 1, characterized in that: The detection structure (12) comprises a detector (1201) arranged at one end of the connecting column (11) away from the movable frame (10), a fixed column (1202) being fixed to the other end of the detector (1201), and a sliding column (1203) being slidably connected inside the fixed column (1202).
5. The detector for predicting the pressing force during mechanical installation interference fit according to claim 3, characterized in that: The top of the second fixed block (4) is provided with a movable groove (7) matching the connecting block (605); one end of the second fixed block (4) is fixed with a support plate (8); the motor (601) is mounted on the top of the support plate (8); the end of the screw rod (602) away from the motor (601) is rotatably connected to the second fixed block (4); and both ends of the limiting column (604) are fixed to the second fixed block (4).
6. The detector for predicting the pressing force during mechanical installation interference fit according to claim 4, characterized in that: A stud (13) is fixed to one end of the detector (1201) away from the fixing column (1202), and the stud (13) is threadedly connected to the connecting column (11).