Coaxiality detection device for upper and lower bearing holes
By designing a device that includes a testing platform, a turntable, and a lifting plate, and combining a miniature laser rangefinder and dual reference axes, the automated and precise testing of upper and lower bearing holes was achieved. This solved the accuracy and versatility problems of traditional testing methods and improved testing precision and efficiency.
Patent Information
- Application Number
- CN202520457855.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Traditional methods for inspecting upper and lower bearing holes rely on manual operation, resulting in poor accuracy and repeatability. Automated equipment lacks versatility, leading to high production costs and long production cycles.
The device employs a testing platform, a turntable, and a lifting plate, combined with a miniature laser rangefinder and a dual-reference axis design. It achieves automated testing through motor drive and adapts to different specifications of parts through an adjustable bidirectional screw and positioning block.
It improves detection accuracy and efficiency, reduces human error, enhances the adaptability and flexibility of the equipment, and is suitable for general detection of various specifications of parts.
Smart Images
Figure CN223910234U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical manufacturing detection technical field, concretely relates to a bearing hole coaxial degree detection device of upper and lower. BACKGROUND
[0002] In the mechanical manufacturing field, the performance and service life of many parts depend largely on the coaxiality of the upper and lower bearing holes inside them, and the coaxiality refers to the accuracy of the axis of two or more shaft parts on the same straight line. For parts with upper and lower bearing holes, if the coaxiality error is too large, the bearing installed in the bearing hole and the shaft cooperating with it will bear uneven load during equipment operation, leading to premature wear of the bearing, intensification of equipment vibration, increase of noise, and even triggering of equipment failure, which seriously affects product quality and production efficiency.
[0003] Traditional detection methods are mostly manual measurement with the help of internal diameter micrometer, dial gauge and other tools, which is relatively cumbersome and requires high experience and professional skills of the detection personnel. At the same time, it is significantly affected by human factors, and the accuracy and repeatability of the detection results are poor. Some enterprises use automatic detection equipment for detection. Although these automatic detection equipment improves the detection efficiency to some extent, it has poor universality and often can only detect parts of specific size and structure. When facing different specifications of upper and lower bearing holes, it needs to frequently replace detection tools or even the whole equipment, increasing production cost and production cycle. Therefore, a bearing hole coaxiality detection device is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0004] To solve the above technical problems, a bearing hole coaxiality detection device is provided, which solves the problem of traditional detection methods, which are mostly manual measurement with the help of internal diameter micrometer, dial gauge and other tools, which is relatively cumbersome and requires high experience and professional skills of the detection personnel. At the same time, it is significantly affected by human factors, and the accuracy and repeatability of the detection results are poor. Some enterprises use automatic detection equipment for detection. Although these automatic detection equipment improves the detection efficiency to some extent, it has poor universality and often can only detect parts of specific size and structure. When facing different specifications of upper and lower bearing holes, it needs to frequently replace detection tools or even the whole equipment, increasing production cost and production cycle.
[0005] To achieve the above purposes, the technical scheme adopted by the utility model is as follows:
[0006] The utility model provides a kind of upper and lower bearing hole coaxiality detection device, including detection table, rotary table and lifting plate, the inside of detection table is provided with drive cavity, the inside top end of drive cavity is fixedly installed with first motor, the output of first motor penetrates the inside top end of drive cavity and is fixedly connected with the lower end of rotary table, the upper end center of rotary table is fixedly connected with first reference shaft, the lower end center of lifting plate is fixedly connected with second reference shaft, the lower end of second reference shaft is provided with micro laser range finder, the upper end of rotary table is equipped with two first sliding slots of symmetrical distribution, the lower end of first sliding slot is equipped with two second sliding slots of symmetrical distribution, the inside rotationally connected with second bidirectional screw rod of right first sliding slot, one end of second bidirectional screw rod penetrates the left side inner wall of right first sliding slot and the right side inner wall of left first sliding slot in proper order and is rotatably connected with the left side inner wall of left first sliding slot, the outer surface of second bidirectional screw rod is threadedly connected with two second positioning blocks of symmetrical distribution, two second positioning blocks are slidably connected in the inside of two first sliding slots respectively, the inside rotationally connected with first bidirectional screw rod of front second sliding slot, one end of first bidirectional screw rod penetrates the rear side inner wall of front second sliding slot and the front side inner wall of rear second sliding slot in proper order and is rotatably connected with the rear side inner wall of rear first sliding slot, the outer surface of first bidirectional screw rod is threadedly connected with two first positioning blocks of symmetrical distribution, two first positioning blocks are slidably connected in the inside of two second sliding slots respectively.
[0007] Preferably, the first reference shaft and the second reference shaft are coaxial.
[0008] Preferably, the upper end of the detection table is fixedly connected with four guide columns that are evenly distributed, the upper end of the guide column is fixedly connected with a top frame, the top frame is fixedly installed with an air cylinder, the output end of the air cylinder penetrates the upper end of the top frame and is fixedly connected with the upper end of the lifting plate.
[0009] Preferably, the lifting plate is slidably connected to the outer surface of the guide column.
[0010] Preferably, a first drive slot is formed in the upper end of the detection table near the right end of the right first sliding slot, a second motor for driving the second bidirectional screw rod to rotate is fixedly installed in the inside of the first drive slot, a second drive slot is formed in the upper end of the detection table near the front end of the front second sliding slot, and a third motor for driving the first bidirectional screw rod to rotate is fixedly installed in the inside of the second drive slot.
[0011] The utility model compared with prior art has the beneficial effects that:
[0012] The utility model provides a kind of upper and lower bearing hole coaxiality detection device, by first motor drive rotary table, cooperate micro laser range finder and double reference shaft design, realize the automatic precision detection of the upper and lower bearing hole coaxiality of spare part, effectively reduce human error, and then improve detection precision and efficiency.
[0013] The first bidirectional screw rod, the second bidirectional screw rod and the positioning block are arranged, the fixed interval can be flexibly adjusted according to the upper bearing hole and the lower bearing hole with different sizes, universal detection of various specifications of parts is realized, and the adaptability and flexibility of the equipment are enhanced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural schematic view of the utility model;
[0015] Figure 2 It is a structural schematic view of the utility model;
[0016] Figure 3 It is a structural schematic view of the utility model;
[0017] Figure 4 It is a structural schematic view of the utility model.
[0018] Reference signs in the drawings are:
[0019] 1, detection table; 2, rotary table; 3, lifting plate; 4, driving cavity; 401, first motor; 5, first reference shaft; 6, second reference shaft; 7, micro laser range finder; 8, first sliding groove; 9, second sliding groove; 10, first bidirectional screw rod; 11, first positioning block; 12, second bidirectional screw rod; 13, second positioning block; 14, first driving groove; 15, second motor; 16, second driving groove; 17, third motor; 18, guide column; 19, top frame; 20, air cylinder. DETAILED DESCRIPTION
[0020] The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought of by those skilled in the art.
[0021] Reference Figures 1-4As shown, a kind of upper and lower bearing hole coaxiality detection device, including detection table 1, rotary table 2 and lifting plate 3, the inside of detection table 1 is provided with drive cavity 4, the inner side top end of drive cavity 4 is fixedly installed with first motor 401, the output end of first motor 401 is through the inner side top end of drive cavity 4 and is fixedly connected with the lower end of rotary table 2, the upper end center of rotary table 2 is fixedly connected with first reference shaft 5, the lower end center of lifting plate 3 is fixedly connected with second reference shaft 6, the lower end of second reference shaft 6 is provided with micro laser range finder 7, the upper end of rotary table 2 is equipped with two first sliding grooves 8 of symmetrical distribution, the lower end of first sliding groove 8 is equipped with two second sliding grooves 9 of symmetrical distribution, the inside of right first sliding groove 8 is rotatably connected with second bidirectional screw 12, one end of second bidirectional screw 12 is in turn through the left side inner wall of right first sliding groove 8 and the right side inner wall of left first sliding groove 8 and is rotatably connected with the left side inner wall of left first sliding groove 8, the outer surface of second bidirectional screw 12 is screw-connected with two second positioning blocks 13 of symmetrical distribution, two second positioning blocks 13 are slidably connected in the inside of two first sliding grooves 8, the inside of front second sliding groove 9 is rotatably connected with first bidirectional screw 10, one end of first bidirectional screw 10 is in turn through the rear inner wall of front second sliding groove 9 and the front inner wall of rear second sliding groove 9 and is rotatably connected with the rear inner wall of rear first sliding groove 8, the outer surface of first bidirectional screw 10 is screw-connected with two first positioning blocks 11 of symmetrical distribution, two first positioning blocks 11 are slidably connected in the inside of two second sliding grooves 9.
[0022] Further, the right end of the upper end of detection table 1 close to right first sliding groove 8 is equipped with first drive slot 14, and first drive slot 14 is fixedly installed with second motor 15 for driving second bidirectional screw 12 to rotate in the inside, the upper end of detection table 1 close to the front end of front second sliding groove 9 is equipped with second drive slot 16, and second drive slot 16 is fixedly installed with third motor 17 for driving first bidirectional screw 10 to rotate in the inside.
[0023] Further, first reference shaft 5 and second reference shaft 6 are coaxial.
[0024] Further, the first reference shaft 5 is inserted into the lower bearing hole of the part to be detected as a reference shaft for detection, providing a reference position for coaxiality detection, and the second reference shaft 6 is inserted into the upper bearing hole of the part to be detected in cooperation with the first reference shaft 5, the first positioning block 11 and the second positioning block 13 are used to position the part to be detected, and the second double screw 12 and the first double screw 10 are driven to rotate by the second motor 15 and the third motor 17 respectively, so that the two second positioning blocks 13 and the first positioning block 11 are away from each other and abut against the inner wall of the lower bearing hole of the part to be detected, fixing the part, and since the two second positioning blocks 13 and the two first positioning blocks 11 are symmetrically arranged, when abutting, the two first positioning blocks 11 and the two second positioning blocks 13 symmetrically exert force respectively, ensuring that the position and direction of the lower bearing hole of the part are symmetrically constrained in two mutually perpendicular directions, and at this time, the center lines of the two first positioning blocks 11 and the center lines of the two second positioning blocks 13 geometrically intersect at a point, which corresponds to the center point of the first reference shaft 5, thereby ensuring that the lower bearing hole of the part is coaxial with the first reference shaft 5.
[0025] Further, the upper end of the detection table 1 is fixedly connected with four evenly distributed guide columns 18, the upper end of the guide column 18 is fixedly connected with a top frame 19, the upper end of the top frame 19 is fixedly installed with a gas cylinder 20, and the output end of the gas cylinder 20 penetrates through the upper end of the top frame 19 and is fixedly connected with the upper end of the lifting plate 3.
[0026] Further, the lifting plate 3 is slidingly connected to the outer surface of the guide column 18.
[0027] Further, the vertical height of the second reference shaft 6 can be adjusted by driving the lifting plate 3 to rise or fall by the gas cylinder 20, so as to adapt to parts of different heights.
[0028] Further, the first reference shaft 5 is coaxial with the turntable 2, after the part to be detected is fixed by the first positioning block 11 and the second positioning block 13, the second reference shaft 6 is inserted into the upper bearing hole of the part to be detected by the gas cylinder 20, the distance between the micro laser range finder 7 and the inner wall of the upper bearing hole directly opposite at this time can be measured by the micro laser range finder 7, at this time, the turntable 2 is driven to rotate by the first motor 401, so as to drive the part to be detected to rotate, since the first reference shaft 5 is coaxial with the lower bearing hole of the part, the turntable 2 and the second reference shaft 6, therefore, when the turntable 2 rotates, the part will rotate with the first reference shaft 5 as the center, since the position of the micro laser range finder 7 is fixed, when the upper bearing hole and the lower bearing hole are completely coaxial, the distances measured by the micro laser range finder 7 from itself to the inner wall of the upper bearing hole at different positions should be the same, on the contrary, if there is a deviation in the coaxiality of the upper bearing hole and the lower bearing hole, the distances measured by the micro laser range finder 7 will be inconsistent, and the difference between the maximum value and the minimum value measured is the coaxiality deviation.
[0029] Working principle: when using, the parts to be detected are placed on the turntable 2, and the first reference shaft 5 is placed on the inner side of the lower bearing hole, then the second motor 15 and the third motor 17 are started to drive the second bidirectional screw rod 12 and the first bidirectional screw rod 10 to rotate respectively, so that the two second positioning blocks 13 and the first positioning block 11 are away from each other, and abut against the inner wall of the lower bearing hole of the part to be detected, and the part is fixed, since the two second positioning blocks 13 and the two first positioning blocks 11 are symmetrically arranged, when abutting, the two first positioning blocks 11 and the two second positioning blocks 13 symmetrically exert force respectively, so as to ensure that the position and direction of the lower bearing hole of the part are symmetrically constrained in two mutually perpendicular directions, at this time, the center lines of the two first positioning blocks 11 and the center lines of the two second positioning blocks 13 intersect at a point in geometry, and this intersection point corresponds to the center point of the first reference shaft 5, so as to ensure that the lower bearing hole of the part is coaxial with the first reference shaft 5, then the second reference shaft 6 is inserted into the upper bearing hole of the part to be detected by the cylinder 20, and the distance between the micro laser range finder 7 and the inner wall of the upper bearing hole opposite at this time can be measured by the micro laser range finder 7, then the turntable 2 is driven to rotate by the first motor 401, and the distance between the micro laser range finder 7 and the inner wall of the upper bearing hole at different positions is measured by the micro laser range finder 7, if the upper bearing hole is coaxial with the upper bearing hole, the measured distance should be the same, otherwise, if the coaxiality of the upper bearing hole and the lower bearing hole exists deviation, the distance measured by the micro laser range finder 7 will be inconsistent, and the difference between the maximum value and the minimum value measured is the coaxiality deviation.
[0030] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope required by the utility model is defined by the appended claims and their equivalents.
Claims
1. A device for detecting the coaxiality of upper and lower bearing holes, characterized in that, The system includes a testing platform (1), a turntable (2), and a lifting plate (3). The testing platform (1) has a drive cavity (4) inside. A first motor (401) is fixedly installed at the top inner side of the drive cavity (4). The output end of the first motor (401) passes through the top inner side of the drive cavity (4) and is fixedly connected to the lower end of the turntable (2). A first reference axis (5) is fixedly connected at the center of the upper end of the turntable (2). A second reference axis (6) is fixedly connected at the center of the lower end of the lifting plate (3). A miniature laser rangefinder (7) is installed at the lower end of the second reference axis (6). Two symmetrically distributed first slide grooves (8) are opened at the upper end of the turntable (2). Two symmetrically distributed second slide grooves (9) are opened at the lower end of the first slide grooves (8). A second bidirectional screw (12) is rotatably connected inside the first slide groove (8) on the right side. One end of the second bidirectional screw (12) passes through the first slide groove on the right side in sequence. The left inner wall of the groove (8) and the right inner wall of the first sliding groove (8) on the left are rotatably connected to the left inner wall of the first sliding groove (8) on the left. The outer surface of the second bidirectional screw (12) is threaded with two symmetrically distributed second positioning blocks (13). The two second positioning blocks (13) are slidably connected to the inside of the two first sliding grooves (8). The inside of the front second sliding groove (9) is rotatably connected with a first bidirectional screw (10). One end of the first bidirectional screw (10) passes through the rear inner wall of the front second sliding groove (9) and the front inner wall of the rear second sliding groove (9) in sequence and is rotatably connected to the rear inner wall of the rear first sliding groove (8). The outer surface of the first bidirectional screw (10) is threaded with two symmetrically distributed first positioning blocks (11). The two first positioning blocks (11) are slidably connected to the inside of the two second sliding grooves (9).
2. The device for detecting coaxiality of upper and lower bearing holes according to claim 1, characterized in that: The first reference axis (5) and the second reference axis (6) are coaxial.
3. The device for detecting coaxiality of upper and lower bearing holes according to claim 1, characterized in that: The upper end of the testing platform (1) is fixedly connected to four evenly distributed guide columns (18), the upper end of the guide columns (18) is fixedly connected to a top frame (19), the upper end of the top frame (19) is fixedly installed with a cylinder (20), the output end of the cylinder (20) passes through the upper end of the top frame (19) and is fixedly connected to the upper end of the lifting plate (3).
4. The device for detecting coaxiality of upper and lower bearing holes according to claim 1, characterized in that: The lifting plate (3) is slidably connected to the outer surface of the guide column (18).
5. The device for detecting coaxiality of upper and lower bearing holes according to claim 1, characterized in that: The upper end of the testing platform (1) is provided with a first drive groove (14) near the right end of the first slide groove (8) on the right side. A second motor (15) for driving the second bidirectional screw (12) to rotate is fixedly installed inside the first drive groove (14). The upper end of the testing platform (1) is provided with a second drive groove (16) near the front end of the second slide groove (9) on the front side. A third motor (17) for driving the first bidirectional screw (10) to rotate is fixedly installed inside the second drive groove (16).