Oil injection ring detection tool

Abstract

This utility model relates to the field of testing equipment technology, and proposes a fixture for detecting fuel injection rings. The fixture includes a main body with an annular positioning groove for positioning and installing the fuel injection ring. An annular positioning step is provided on the inner side of the annular positioning groove, and multiple positioning grooves are spaced circumferentially on the annular positioning step. At least one positioning through hole is also provided at the bottom of the annular positioning groove. Multiple detection telescopic units are provided on the upper surface of the fixture main body, and these units are circumferentially spaced around the annular positioning groove. A detection pin is provided at the telescopic end of each detection telescopic unit. Multiple microswitches are provided on the inner side of the annular positioning groove, and each microswitch corresponds to a detection pin. This technical solution solves the problems of low efficiency and easy omissions in existing detection methods for the surrounding through holes of the fuel injection ring.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a tooling for testing oil injection rings. Background Technology

[0002] The oil injection ring is a structural component used on the stator end face of a new energy vehicle motor to distribute cooling oil and cool the stator. The oil injection ring is a circular component with through holes on its sidewalls to ensure even coolant distribution. After the oil injection ring is manufactured, the axial through holes need to be inspected to determine their continuity. This is because the through holes may become blocked due to burrs adhering during manufacturing, resulting in uneven coolant distribution. However, current equipment for inspecting the through holes on such annular components lacks specific capabilities, often relying on manual verification and repair of each hole, which is inefficient and prone to omissions. Therefore, a new inspection device is needed. Utility Model Content

[0003] This invention proposes a tooling for detecting fuel injection rings, which solves the problems of low efficiency and easy omissions in the existing detection methods for the surrounding through holes of fuel injection rings.

[0004] The technical solution of this utility model is as follows:

[0005] A fuel injection ring inspection fixture includes a fixture body with an annular positioning groove for positioning and installing the fuel injection ring. An annular positioning step is provided on the inner side of the annular positioning groove, and multiple positioning grooves are spaced circumferentially on the annular positioning step. At least one positioning through hole is also provided at the bottom of the annular positioning groove. Multiple detection telescopic units are provided on the upper surface of the fixture body, circumferentially spaced around the annular positioning groove. A detection pin is provided at the telescopic end of each detection telescopic unit. Multiple microswitches are provided on the inner side of the annular positioning groove, each microswitch corresponding to a detection pin.

[0006] The testing fixture also includes needle holders, and multiple needle holders are provided, with the number corresponding to the number of the testing telescopic unit. The testing needle is fixedly mounted on the needle holder, and the needle holder is detachably connected to the telescopic end of the testing telescopic unit.

[0007] The detection probe includes a center probe and a sleeve probe. The sleeve probe has a center hole and is fitted onto the center probe. The end of the sleeve probe near the micro switch is tapered. The center probe has a first limiting block and a second limiting block. The distance between the first limiting block and the second limiting block is greater than the length of the sleeve probe. The radii of the first limiting block and the second limiting block are both smaller than the radius of the sleeve probe. The radii of the first limiting block and the second limiting block are both larger than the radius of the center hole.

[0008] The end of the needle furthest from the micro switch is tapered.

[0009] The two ends of the sleeve are provided with relief grooves, which are circular and coaxial with the center hole. The radii of the first limiting block and the second limiting block are smaller than the radius of the relief groove.

[0010] The working principle and beneficial effects of this utility model are as follows:

[0011] This utility model discloses a fuel injection ring detection fixture. The method for detecting the fuel injection ring involves inserting a detection pin corresponding to the position of the through hole around the fuel injection ring, and a triggerable microswitch is installed inside the fuel injection ring. For accurate detection, precise positioning of the fuel injection ring is required. Specifically, the fixture body can be a rectangular or square base, with an annular positioning groove centrally located on the bearing surface of the base. The annular positioning groove corresponds to the fuel injection ring. In addition, a positioning step is provided within the annular positioning groove to further determine the height of the fuel injection ring. Multiple positioning steps are provided on the positioning step. The positioning groove corresponds to the reinforcing rib on the oil injection ring, thereby positioning the annular position. Furthermore, at least one positioning through hole is provided at the bottom of the annular positioning groove, and a corresponding protrusion structure is provided on the oil injection ring for the final stage of positioning, improving positioning accuracy. The detection telescopic unit located on the periphery of the oil injection ring extends, inserting the detection needle into the through hole of the oil injection ring. If the machining position error of the through hole is within the acceptable range, the detection needle passes through the through hole and abuts against the micro switch located on the other side of the through hole, while simultaneously pushing out any burrs that may be blocking it for repair, thereby solving the above problems. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the fuel injection ring structure tested according to this utility model;

[0014] Figure 2 This is a schematic diagram of the testing fixture structure in this utility model;

[0015] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0016] Figure 4 This is a schematic diagram of the detection needle in this utility model;

[0017] In the figure: 1. Fixture body, 2. Annular positioning groove, 3. Annular positioning step, 4. Positioning groove, 5. Positioning through hole, 6. Detection telescopic unit, 7. Detection needle, 8. Micro switch, 9. Needle seat, 10. Center needle, 11. Sleeve needle, 12. Center hole, 13. First limit stop, 14. Second limit stop, 15. Relief groove. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0019] like Figures 1-4 As shown in the figure, this embodiment proposes a fuel injection ring detection fixture. The detection fixture includes a fixture body 1, on which an annular positioning groove 2 is provided. The annular positioning groove 2 is used to position and install the fuel injection ring. An annular positioning step 3 is provided on the inner side of the annular positioning groove 2. Multiple positioning grooves 4 are provided circumferentially at intervals on the annular positioning step 3. At least one positioning through hole 5 is also provided at the bottom of the annular positioning groove 2. Multiple detection telescopic units 6 are provided on the upper surface of the fixture body 1. The multiple detection telescopic units 6 are circumferentially at intervals around the annular positioning groove 2. Detection needles 7 are provided at the telescopic ends of the detection telescopic units 6. Multiple micro switches 8 are provided on the inner side of the annular positioning groove 2. Each micro switch 8 corresponds to a detection needle 7.

[0020] This embodiment discloses a fuel injection ring detection fixture. The fuel injection ring is detected by inserting a detection pin 7 corresponding to the position of the through hole around the fuel injection ring, and a triggerable microswitch 8 is set inside the fuel injection ring. For accurate detection, precise positioning of the fuel injection ring is required. Specifically, the fixture body 1 can be a rectangular or square base. An annular positioning groove 4 is centrally located on the bearing surface of the base, corresponding to the fuel injection ring. In addition, a positioning step is provided within the annular positioning groove 4 to further position the height of the fuel injection ring. A positioning step is set on the positioning step. Multiple positioning grooves 4 correspond to the reinforcing ribs on the oil injection ring, thereby positioning the annular position. Furthermore, at least one positioning through hole 5 is provided at the bottom of the annular positioning groove 2, and a corresponding protrusion structure is provided on the oil injection ring for the final stage of positioning to improve positioning accuracy. The detection telescopic unit 6 located on the periphery of the oil injection ring extends and inserts the detection needle 7 into the through hole of the oil injection ring. If the machining position error of the through hole is within the qualified range, the detection needle 7 passes through the through hole and abuts against the micro switch 8 located on the other side of the through hole, while pushing out any burrs that may be blocked for repair.

[0021] The testing fixture also includes a needle holder 9, and multiple needle holders 9 are provided, with the number corresponding to the number of the testing telescopic unit 6. The testing needle 7 is fixedly mounted on the needle holder 9, and the needle holder 9 is detachably connected to the telescopic end of the testing telescopic unit 6.

[0022] In this embodiment, the detection needle 7 is installed on the telescopic end of the detection telescopic unit 6 via the needle holder 9. The needle holder 9 and the detection telescopic unit 6 are detachable. By disassembling and adjusting the position, the relative position between the needle holder 9 and the detection telescopic unit 6 can be finely adjusted to improve the detection accuracy. The detection telescopic unit 6 can be a telescopic device such as a cylinder.

[0023] The detection needle 7 includes a center needle 10 and a sleeve needle 11. The sleeve needle 11 has a center hole 12 and is sleeved on the center needle 10. The end of the sleeve needle 11 near the micro switch 8 is tapered. The center needle 10 is provided with a first limiting block 13 and a second limiting block 14. The distance between the first limiting block 13 and the second limiting block 14 is greater than the length of the sleeve needle 11. The radii of the first limiting block 13 and the second limiting block 14 are both smaller than the radius of the sleeve needle 11. The radii of the first limiting block 13 and the second limiting block 14 are both larger than the radius of the center hole 12.

[0024] In this embodiment, the detection needle 7 is composed of a sleeve needle 11 fitted onto a central needle 10. A first limiting block 13 and a second limiting block 14 are provided on the central needle 10 to limit the movement range of the sleeve needle 11. The distance between the first limiting block 13 and the second limiting block 14 allows the sleeve needle 11 to move. During initial detection, the sleeve needle 11 is located on the side of the central needle 10 closest to the fuel injection ring. The end of the sleeve needle 11 is tapered. When the position of the through hole on the fuel injection ring deviates within the allowable range, the tapered sleeve needle 11 can be inserted into the through hole of the fuel injection ring by means of the inclined tapered head. Simultaneously, as the detection telescopic unit 6 extends, the sleeve needle 11 guides the central needle 10. The first limiting block 13 on the central needle 10 abuts against the sleeve needle 11, and the central needle 10 pushes the sleeve needle 11 into place, simultaneously repairing and cleaning the hole. When withdrawn from the hole, the second limiting block 14 on the central needle 10 abuts against the other end of the sleeve needle 11, pulling it out of the hole.

[0025] The end of the pin 11 furthest from the micro switch 8 is tapered.

[0026] In this embodiment, the other end of the sleeve 11 is also set to be tapered. When exiting the through hole of the oil injection ring, the tapered end of the sleeve 11 can make the exit more directional.

[0027] The two ends of the sleeve needle 11 are provided with relief grooves 15. The relief grooves 15 are circular and coaxial with the center hole 12. The radii of the first limiting block 13 and the second limiting block 14 are smaller than the radius of the relief grooves 15.

[0028] In this embodiment, relief grooves 15 are provided at both ends of the sleeve needle 11. When the first limiting block 13 and the second limiting block 14 abut against the ends of the sleeve needle 11 respectively, the first limiting block 13 and the second limiting block 14 can sink into the relief grooves 15 to achieve a smoother mating surface.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An oil injection ring detection tool characterized by, The testing fixture includes a fixture body (1), on which an annular positioning groove (2) is provided. The annular positioning groove (2) is used to position and install the oil injection ring. An annular positioning step (3) is provided on the inner side of the annular positioning groove (2). Multiple positioning grooves (4) are provided on the annular positioning step (3) at circumferential intervals. At least one positioning through hole (5) is also provided at the bottom of the annular positioning groove (2). Multiple detection telescopic units (6) are provided on the upper surface of the fixture body (1). Multiple detection telescopic units (6) are arranged at circumferential intervals around the annular positioning groove (2). Detection needles (7) are provided at the telescopic ends of the detection telescopic units (6). Multiple micro switches (8) are provided on the inner side of the annular positioning groove (2). Each micro switch (8) corresponds to the detection needle (7).

2. The oil jet ring detection tool of claim 1, wherein, The testing fixture also includes a needle holder (9), which is provided in multiple quantities corresponding to the number of the testing telescopic unit (6). The testing needle (7) is fixedly mounted on the needle holder (9), and the needle holder (9) is detachably connected to the telescopic end of the testing telescopic unit (6).

3. The fuel injection ring detection fixture according to claim 2, characterized in that, The detection needle (7) includes a center needle (10) and a sleeve needle (11). The sleeve needle (11) is provided with a center hole (12) and is sleeved on the center needle (10). The end of the sleeve needle (11) near the micro switch (8) is tapered. The center needle (10) is provided with a first limiting block (13) and a second limiting block (14). The distance between the first limiting block (13) and the second limiting block (14) is greater than the length of the sleeve needle (11). The radii of the first limiting block (13) and the second limiting block (14) are both smaller than the radius of the sleeve needle (11). The radii of the first limiting block (13) and the second limiting block (14) are both larger than the radius of the center hole (12).

4. The fuel injection ring detection fixture according to claim 3, characterized in that, The end of the pin (11) away from the micro switch (8) is tapered.

5. The fuel injection ring detection fixture according to claim 4, characterized in that, The two ends of the sleeve (11) are provided with relief grooves (15). The relief grooves (15) are circular and coaxial with the center hole (12). The radii of the first limiting block (13) and the second limiting block (14) are smaller than the radius of the relief grooves (15).

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