Flatness detection device

Abstract

The utility model discloses a flatness detection device. The flatness detection device comprises a detection platform, the surface of the detection platform is provided with a plurality of mounting grooves, and the surface of the detection platform is suitable for placing a detected piece, so that the detected surface of the detected piece is in contact with the surface of the detection platform; and a plurality of micro-switches, each micro-switch is installed in the corresponding installation groove, the micro-switches are configured to realize current conduction in the micro-switches under the gravity of the detected piece so as to form an electric loop, each micro-switch controls an indicating lamp connected with an external circuit, and the on / off of the indicating lamp is used for indicating a switch-on state. The on and off of the indicating lamp are controlled through the weight pressure of the detected piece on the microswitch with high sensitivity, the detection standard requirement is finally met, and the flatness is accurately, rapidly and conveniently tested.

Description

Technical Field

[0001] This utility model relates to the field of inspection tool technology, and in particular to a flatness detection device. Background Technology

[0002] Products with strict flatness requirements need to be inspected using testing equipment. For example, in the manufacture of mechanical devices, the flatness of bushings or the end faces of shafts needs to be inspected. However, existing inspection methods generally use coordinate measuring machines (CMMs), which, due to size limitations, cannot fully evaluate flatness and are not very accurate. Another common method is to place the part on a marble platform and inspect it using dial gauges or feeler gauges, but this method is also not very accurate. Both of these methods require a certain level of personnel skill and have low inspection efficiency and accuracy. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a flatness testing device that uses a highly sensitive microswitch, controlled by the weight pressure of the workpiece under test, to control the on / off state of an indicator light, ultimately achieving the required testing standards. The flatness test is accurate, fast, and more convenient.

[0004] A flatness detection device according to an embodiment of the present invention includes a detection platform with a plurality of mounting slots on its surface. The surface of the detection platform is adapted to place a workpiece to be tested, so that the surface to be tested of the workpiece contacts the surface of the detection platform. A plurality of microswitches are also included, each of which is installed in one of the mounting slots. Each microswitch is configured to conduct current within itself under the weight of the workpiece to form an electrical circuit. Each microswitch controls an indicator light connected to an external circuit, and the on / off state of the indicator light indicates the on / off state.

[0005] Therefore, by installing microswitches in the mounting slots of the testing platform, the high-sensitivity microswitches control the on / off state of the indicator lights by the weight pressure of the tested workpiece, ultimately achieving the testing standard requirements. The flatness test is accurate, fast, and more convenient, greatly improving production efficiency and reducing the technical skill requirements for operators, thus saving labor costs.

[0006] According to some embodiments of the present invention, the micro switch includes a base and a triggering mechanism. A triggering block is connected to the top of the base. The triggering block is configured to trigger the triggering mechanism to form an electrical circuit when the base moves downward due to the gravity of the detected object.

[0007] According to some embodiments of the present invention, the micro switch further includes: a connecting shaft, the connecting shaft being disposed in the mounting groove and having both ends fixed to the two side walls of the mounting groove respectively, the end of the base away from the trigger block being connected to the connecting shaft, and the base rotating when subjected to the gravity of the tested object.

[0008] According to some embodiments of the present invention, a through-hole is formed on the detection platform, and a plurality of mounting grooves are arranged around the outer periphery of the through-hole; it also includes a mandrel, a portion of which is fixed to the through-hole and the other portion of which extends upward relative to the surface of the detection platform.

[0009] According to some embodiments of the present invention, the detection platform is a circular platform, and a plurality of the mounting slots are distributed at intervals around the center of the detection platform along its circumference.

[0010] According to some embodiments of the present invention, the outer wall of the detection platform is formed with an annular wire-passing groove, and the wire-passing groove is connected to each of the mounting grooves.

[0011] According to some embodiments of the present invention, the mounting groove extends along the radial direction of the detection platform, and the mounting groove extends in a direction away from the center to penetrate the outer wall of the detection platform; and / or, the mounting groove extends along the axial direction of the detection platform, and the portion of the mounting groove away from the center extends in a direction away from the surface of the detection platform to penetrate the bottom surface of the detection platform.

[0012] According to some embodiments of the present invention, the flatness detection device further includes: a circular cover, the bottom of which is open, the circular cover being fitted onto the detection platform, the circular cover having an annular step extending toward the center, and the micro switch including a trigger block for contacting the workpiece being tested, the trigger block being located on the inner circumference of the annular step.

[0013] According to some embodiments of the present invention, the flatness detection device further includes: a converter circuit board, wherein each of the microswitches is connected to the converter circuit board via wires, and the converter circuit board distributes signals to the corresponding indicator lights of each of the microswitches.

[0014] According to some embodiments of the present invention, the top of the micro switch is flush with the surface of the detection platform.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a view of the flatness testing device and the tested part according to an embodiment of the present utility model.

[0018] Figure 2 This is a cross-sectional view of the flatness detection device and the workpiece under test according to an embodiment of the present utility model;

[0019] Figure 3 yes Figure 2 Enlarged diagram of point A in the diagram;

[0020] Figure 4 This is a schematic diagram of the structure of the detection platform according to an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the detection platform and the mandrel according to an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the testing platform, mandrel, and test piece according to an embodiment of the present utility model;

[0023] Figure 7 This is a schematic diagram of the detection platform and the circular cover according to an embodiment of the present utility model.

[0024] Figure label:

[0025] 1. Testing platform; 11. Mounting slot; 12. Straight round hole; 13. Wire groove; 2. Micro switch; 21. Base; 22. Trigger block; 23. Connecting shaft; 3. Spindle; 31. First shaft; 32. Second shaft; 4. Circular cover; 41. Annular step; 5. Test piece. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0027] The following is for reference. Figures 1-7 Describes a flatness detection device according to an embodiment of the present utility model.

[0028] like Figures 1-4 As shown, the flatness testing device includes a testing platform 1 and multiple microswitches 2. The surface of the testing platform 1 is suitable for placing the workpiece 5 to be tested, so that the surface to be tested of the workpiece 5 contacts the surface of the testing platform 1. The testing platform 1 is a standard horizontal and vertical platform, so that the surface of the testing platform 1 can serve as a standard horizontal plane.

[0029] Combination Figure 4 As shown, the surface of the testing platform 1 is provided with multiple mounting slots 11, and each mounting slot 11 is equipped with a micro switch 2. The micro switch 2 is configured to conduct current within itself under the gravity of the tested object 5 to form an electrical circuit. Each micro switch 2 controls an indicator light connected to an external circuit, and the on / off state of the indicator light indicates the on / off status.

[0030] Specifically, the surface of the testing platform 1 has multiple mounting slots 11, and microswitches 2 are installed in each mounting slot 11 so that microswitches 2 at different positions correspond to different positions on the surface to be tested of the test piece 5. When the test piece 5 is placed on the testing platform 1, the surface to be tested of the test piece 5 contacts the surface of the testing platform 1. At this time, the surface to be tested of the test piece 5 will contact the microswitches 2, causing the microswitches 2 to conduct current and form an electrical circuit under the drive of the gravity of the test piece 5. Furthermore, since each microswitch 2 controls an indicator light connected to an external circuit, when the indicator light is lit, it indicates that the flatness of the surface area to be tested in contact with the microswitch 2 is qualified. Based on this testing principle, when all indicator lights are lit, it indicates that the flatness of the test piece 5 is qualified; when one or more indicator lights are not lit, it indicates that the flatness of the test piece 5 is unqualified. In this embodiment, the number of microswitches 2 can be flexibly set according to the weight and structure of the test piece 5, and the sensitivity of the microswitches 2 can be adjusted according to the weight of the test piece 5.

[0031] Furthermore, under the gravitational force of the detected component 5, the micro switch 2 can conduct current and form an electrical circuit through its internal mechanical structure and electrical components. In a specific embodiment, the micro switch 2 can utilize existing spring mechanisms and contact systems to control the on / off state of the circuit. Specifically, the spring mechanism enables rapid switching of the moving contact, ensuring the circuit can be connected or disconnected in a very short time. When the indicator light illuminates, it indicates that the micro switch 2 has been successfully connected. Of course, the micro switch can be replaced by a related sensor, and the current can be connected based on the mechanism of that sensor.

[0032] Therefore, by installing a micro switch 2 in the mounting slot 11 of the testing platform 1, the high-sensitivity micro switch 2 controls the opening and closing of the indicator light by the weight pressure of the tested part 5, thus achieving the testing standard requirements. The test flatness is accurate, fast and more convenient, greatly improving production efficiency, reducing the technical level requirements of operators, saving personnel costs, and making it suitable for widespread use.

[0033] Furthermore, the micro switch 2 includes a base 21 and a triggering mechanism. A triggering block 22 is connected to the top of the base 21. When the triggering block 22 is driven by the gravity of the detected object 5 to move the base 21 downward, it can trigger the triggering mechanism to form an electrical circuit.

[0034] Specifically, such as Figure 3 and Figure 4 As shown, the trigger block 22 and the base 21 are used to cooperate with the trigger mechanism. The trigger mechanism has a trigger state for current transmission and a circuit-breaking state for blocking current signal transmission, so that the trigger block 22 can switch the trigger mechanism between the trigger state and the circuit-breaking state. When the trigger block 22 is in the initial position, the trigger mechanism is in the circuit-breaking state. When the trigger block 22 is driven by the gravity of the tested object 5 to move the base 21 downward, the base 21 triggers the trigger mechanism, so that the trigger mechanism changes from the circuit-breaking state to the trigger state, so that the current signal is transmitted to the indicator light connected to the external circuit through the trigger mechanism, so that the indicator light is lit, thereby indicating that the flatness of the tested surface area corresponding to the trigger block 22 is qualified.

[0035] Furthermore, the micro switch 2 also includes a connecting shaft 23, which is disposed in the mounting groove 11 and its two ends are respectively fixed to the two side walls of the mounting groove 11. The end of the base 21 away from the trigger block 22 is connected to the connecting shaft 23, and the base 21 rotates when subjected to the gravity of the detected object 5.

[0036] like Figure 2 , Figure 4 and Figure 5 As shown, both ends of the connecting shaft 23 are fixed to the side walls of the mounting groove 11, and the end of the base 21 furthest from the trigger block 22 is connected to the connecting shaft 23. When the trigger block 22 moves the base 21 downward under the weight of the detected component 5, the base 21 rotates downward around the connecting shaft 23, thereby triggering the trigger mechanism. This causes the trigger mechanism to change from an open-circuit state to a triggered state, so that the current signal is transmitted to the indicator light connected to the external circuit through the trigger mechanism, thereby illuminating the indicator light. Therefore, by setting the connecting shaft 23, it can be ensured that the base 21 moves in a specified direction, thereby ensuring accurate triggering of the trigger mechanism. In addition, the micro switch 2 may also include a limiting structure to prevent the base 21 from moving excessively.

[0037] Furthermore, the micro switch 2 also includes a spring mechanism. A spring can be installed under the base 21 to provide a reset force, ensuring that the trigger block 22 can automatically return to its initial position when no external force is applied, thus avoiding false triggering. When the detected component 5 is removed, the spring pushes the trigger block 22 back to its original position, i.e., the micro switch 2 resets.

[0038] Furthermore, the testing platform 1 has a through-hole 12, and multiple mounting slots 11 are arranged around the outer periphery of the through-hole 12.

[0039] The flatness testing device also includes a mandrel 3, a portion of which is fixed inside the straight circular hole 12, and the other portion extends upward relative to the surface of the testing platform 1.

[0040] like Figure 4 and Figure 5 As shown, a straight circular hole 12 is formed on the detection platform 1, penetrating both the surface and bottom of the detection platform 1. Multiple mounting slots 11 are arranged circumferentially around the outer side of the straight circular hole 12. Furthermore, a mandrel 3 is fixedly installed in the straight circular hole 12, with a portion of the mandrel 3 protruding upwards relative to the surface of the detection platform 1. Thus, when inspecting a workpiece 5 such as a bearing sleeve or shaft, the workpiece 5 is placed on the detection plane by passing the mandrel 3 from top to bottom, ensuring that the "annular" detection surface of the workpiece 5 corresponds to multiple microswitches 2 arranged in an "annular" pattern, thereby achieving the positioning of the workpiece 5. In other words, the mandrel 3 serves to guide the placement of the workpiece 5, ensuring that the workpiece 5 is properly positioned.

[0041] Furthermore, the detection platform 1 is a circular platform, and multiple mounting slots 11 are distributed at intervals around the center of the detection platform 1 along its circumference. For example... Figures 4-6 As shown, multiple microswitches 2 are arranged at intervals along the circumference around the center of the detection platform 1, so that the multiple microswitches 2 are arranged in a "ring" to correspond to the "ring" detection surface of the tested parts 5 such as bearing sleeves or shaft parts, so as to detect the flatness of the "ring" detection surface.

[0042] Furthermore, the outer wall of the testing platform 1 is formed with an annular wire passage groove 13, which is connected to each mounting groove 11.

[0043] like Figures 4-6 As shown, by connecting the annular wire groove 13 with each mounting groove 11, the wires of multiple microswitches 2 can be fixed in the wire groove 13 and the wires can be led out of the detection platform 1. This avoids the wires being messy and disorderly, reduces friction and interference between the wires, and lowers the risk of short circuits or other electrical faults.

[0044] Furthermore, the mounting groove 11 extends in the radial direction of the detection platform 1, and the mounting groove 11 extends in a direction away from the center to penetrate the outer wall of the detection platform 1; and / or, the mounting groove 11 extends in the axial direction of the detection platform 1, and the portion of the mounting groove 11 away from the center extends in a direction away from the surface of the detection platform 1 to penetrate the bottom surface of the detection platform 1.

[0045] like Figure 4As shown, the mounting groove 11 extends radially along the detection platform 1, and one end of the mounting groove 11 away from the center extends through to the outer wall of the detection platform 1, so as to place at least one micro switch 2 radially within the mounting groove 11. Simultaneously, the mounting groove 11 extends downward along the axial direction of the detection platform 1, and the portion of the mounting groove 11 away from the center extends in a direction away from the surface of the detection platform 1 to the bottom surface of the detection platform 1, allowing the wires of the micro switch 2 to be led downwards. Furthermore, the mounting groove 11's radial and axial extension not only facilitates the installation of the micro switch 2 but also reduces the weight of the detection platform 1, making it easier to move.

[0046] Furthermore, the flatness detection device also includes: a circular cover 4, the bottom of which is open, the circular cover 4 is fitted on the detection platform 1, and the circular cover 4 has an annular step 41 extending toward the center, and the trigger block 22 of the micro switch 2 is located on the inner circumference of the annular step 41.

[0047] like Figure 2 and Figure 7 As shown, by fitting the circular cover 4 onto the testing platform 1, the outer wall of the testing platform 1 can be protected, and the wires fixed by the wire groove 13 on the testing platform 1 can also be effectively protected. Furthermore, the circular cover 4 has an annular step 41 extending towards the center, forming a circular hole at the center of the circular cover 4. The part to be tested 5 is placed in the circular hole, allowing the microswitch 2 in the circular hole to contact the part to be tested 5, thereby detecting the flatness of the part to be tested 5. The edge of the annular step 41 forms an arc surface to prevent damage to the part to be tested 5.

[0048] Furthermore, the flatness detection device also includes: a converter circuit board, in which each microswitch 2 is connected to the converter circuit board via wires, and the converter circuit board distributes signals to the corresponding indicator lights of each microswitch 2.

[0049] Specifically, all microswitches 2 can be connected to the adapter circuit board via a single multi-core cable (including multiple wires), and the adapter circuit board then processes and distributes signals to the corresponding indicator lights. This not only reduces the amount of on-site wiring work but also lowers the possibility of wiring errors. Furthermore, the adapter circuit board can integrate a small controller or microprocessor to centrally monitor the status of all microswitches 2 and automatically adjust the indicator light status according to preset logic. This eliminates the need to configure independent control logic for each microswitch 2. If a microswitch 2 or indicator light malfunctions, it can be simply replaced without rewiring or reconfiguring the entire system. Multiple indicator lights can be installed on the adapter circuit board, and the adapter circuit board can be located externally to the detection platform 1.

[0050] Furthermore, the top of the micro switch 2 is flush with the surface of the detection platform 1. This design eliminates any protrusions or depressions on the entire surface of the detection platform 1. On one hand, it protects the micro switch 2 and reduces false triggering due to accidental contact, thus improving the stability and reliability of the detection device. On the other hand, when the workpiece 5 is placed on the detection platform 1, its weight is evenly distributed across the trigger blocks 22 of the multiple micro switches 2, rather than concentrated on a single trigger block 22. This ensures that the trigger blocks 22 can more accurately sense changes in the object's weight, resulting in a more sensitive trigger response. Additionally, because the trigger blocks 22 directly contact the object, the minimum weight threshold required for triggering is lowered, making it suitable for detecting bushings or shaft-like parts.

[0051] 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.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flatness detection device, characterized in that, include: The testing platform has multiple mounting slots on its surface, and the surface of the testing platform is suitable for placing the workpiece to be tested, so that the surface to be tested of the workpiece is in contact with the surface of the testing platform. Multiple microswitches are provided, each of which is installed in a mounting slot. The microswitches are configured to conduct current within the device under the influence of gravity to form an electrical circuit. Each microswitch controls an indicator light connected to an external circuit, and the on / off state of the indicator light indicates the on / off status.

2. The flatness detection device according to claim 1, characterized in that, The micro switch includes a base and a triggering mechanism. A trigger block is connected to the top of the base. The trigger block is configured to trigger the triggering mechanism to form an electrical circuit when the base moves downward due to the gravity of the object being detected.

3. The flatness detection device according to claim 2, characterized in that, The micro switch further includes a connecting shaft, which is disposed in the mounting groove and its two ends are fixed to the two side walls of the mounting groove. The end of the base away from the trigger block is connected to the connecting shaft, and the base rotates when subjected to the gravity of the tested object.

4. The flatness detection device according to claim 1, characterized in that, The testing platform has a through-hole, and a plurality of mounting grooves are arranged around the outer periphery of the through-hole; it also includes a mandrel, a portion of which is fixed to the through-hole and the other portion of which extends upward relative to the surface of the testing platform.

5. The flatness detection device according to claim 1 or 4, characterized in that, The detection platform is a circular platform, and multiple mounting slots are distributed at intervals around the center of the detection platform along its circumference.

6. The flatness detection device according to claim 5, characterized in that, The outer wall of the testing platform is formed with an annular wire-passing groove, which is connected to each of the mounting slots.

7. The flatness detection device according to claim 5, characterized in that, The mounting groove extends radially along the detection platform, and extends away from the center to penetrate the outer wall of the detection platform; and / or, the mounting groove extends axially along the detection platform, and the portion of the mounting groove away from the center extends away from the surface of the detection platform to penetrate the bottom surface of the detection platform.

8. The flatness detection device according to claim 5, characterized in that, Also includes: A circular cover with an open bottom is fitted onto the detection platform. The circular cover has an annular step extending toward the center. The micro switch includes a trigger block for contacting the workpiece being tested, and the trigger block is located on the inner circumference of the annular step.

9. The flatness detection device according to claim 1, characterized in that, Also includes: transfer The circuit board, each of the microswitches is connected to the adapter circuit board via wires, and the adapter circuit board distributes signals to the corresponding indicator lights of each microswitch.

10. The flatness detection device according to claim 1, characterized in that, The top of the micro switch is flush with the surface of the detection platform.

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