A tooling for detecting the cylindricity of guide posts

Abstract

This utility model belongs to the field of tooling and fixture technology, specifically relating to a tooling fixture for detecting the cylindricity of a guide post. It includes a base, with a limiting mechanism at the top of the base. A first mounting plate and a second mounting plate are respectively mounted on both sides of the limiting mechanism. A third mounting plate is mounted on the side of the second mounting plate away from the limiting mechanism. A pair of first rollers are symmetrically rotatably connected to the top of the sidewall of the first mounting plate. A pair of second rollers are symmetrically rotatably connected between the top of the opposing sidewalls of the second and third mounting plates. A cylindricity detector is mounted on the top of the base away from the third mounting plate. The advantages of this utility model are that it enables rapid horizontal clamping of the workpiece, keeping the workpiece's axis parallel to the detection rod, and allowing adjustment of the probe height according to the diameter of the shaft hole, thus achieving rapid and accurate detection of workpieces with different shaft hole diameters.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically to a tooling for detecting the cylindricity of a guide post. Background Technology

[0002] Photovoltaic equipment guide columns, as key guiding and supporting components in photovoltaic systems, play an irreplaceable role in ensuring precise equipment operation, improving power generation efficiency, and extending service life. Their core functions include guiding the precise movement of photovoltaic modules or supports, withstanding lateral forces to maintain structural stability, and reducing mechanical wear through precise fit. From a structural design perspective, photovoltaic equipment guide columns primarily utilize high-strength materials, such as bearing steel (SUJ2) or hot-work die steel. These materials combine high hardness, wear resistance, and fatigue resistance, meeting long-term operational requirements. For example, in dual-axis tracking supports, the guide column, in conjunction with guide wheels or sliders, achieves high-precision rotation of the photovoltaic panel in both horizontal and vertical directions with extremely low angular control error, thereby maximizing the capture of direct sunlight. During manufacturing, guide columns require shaft holes of varying diameters at their axis. To ensure precise fit with other parts during assembly and use, the cylindricity of the guide column's shaft holes needs to be checked.

[0003] However, most existing cylindricity testing fixtures use chucks to clamp the workpiece in the vertical direction. For workpieces with different diameters at both ends of the shaft hole, it is difficult to ensure that the probe of the cylindricity tester keeps in contact with the side wall of the shaft hole. Furthermore, when clamping long shaft-shaped workpieces with chucks, the workpiece is prone to tilting in the vertical direction, which affects the testing accuracy. Utility Model Content

[0004] The purpose of this invention is to address the problem that existing cylindricity inspection fixtures are difficult to use to inspect workpieces with different shaft hole diameters, and that the workpieces are prone to skew during clamping, resulting in low inspection accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A guide post cylindricity testing fixture includes a base. A limiting mechanism is provided on the top of the base. A first mounting plate and a second mounting plate are respectively provided on both sides of the limiting mechanism. A third mounting plate is provided on the side of the second mounting plate away from the limiting mechanism. A pair of first rollers are symmetrically rotatably connected to the top of the sidewall of the first mounting plate. A pair of second rollers are symmetrically rotatably connected between the top of the opposing sidewalls of the second and third mounting plates. The limiting mechanism includes a mounting frame. A lifting cylinder is vertically fixedly connected to the top of the mounting frame. A lifting frame is fixedly connected to the piston rod of the lifting cylinder. A motor is horizontally fixedly connected to the lower side of the end of the lifting frame facing the first mounting plate. A drive wheel is fixedly connected to the shaft of the motor. A limiting frame is fixedly connected to the lower side of the other end of the lifting frame. A pair of limiting wheels are symmetrically rotatably connected to both sides of the bottom of the limiting frame. A cylindricity tester is provided on the top of the base away from the third mounting plate.

[0007] Furthermore, the cylindricity measuring instrument includes an electric cylinder, which is horizontally and fixedly connected to the top of the base. The piston rod of the electric cylinder is fixedly connected to a movable seat, which is slidably connected to the base.

[0008] Furthermore, a lifting mechanism is fixedly connected to the side wall of the movable seat facing the third mounting plate, the lifting platform of the lifting mechanism is fixedly connected to a lifting seat, a detection rod is fixedly connected to the side wall of the lifting seat, and a probe is rotatably connected to the end of the detection rod facing the third mounting plate.

[0009] Furthermore, the first mounting plate, the second mounting plate, and the third mounting plate are all perpendicular to the base.

[0010] Furthermore, the axes of the first roller, the second roller, the drive wheel, and the limit wheel are all perpendicular to the side wall of the second mounting plate.

[0011] Furthermore, a fourth mounting plate is fixedly connected to the top of the base away from the cylindricity measuring instrument, and a camera is detachably connected horizontally to the top of the fourth mounting plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The present invention provides a guide post cylindricity detection fixture, which, by setting a first roller, a second roller and a limiting mechanism, can realize the rapid horizontal clamping of the workpiece, thereby keeping the workpiece's axis parallel to the detection rod, and can adjust the height of the probe according to the diameter of the shaft hole, so that the probe can always keep in contact with the inner wall of the shaft hole, thereby realizing rapid and accurate detection of workpieces with different shaft hole diameters. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of a guide post cylindricity detection fixture according to the present invention.

[0015] Figure 2 This is a side view schematic diagram of a guide post cylindricity detection fixture according to the present invention.

[0016] Figure 3 This is a top view schematic diagram of a guide post cylindricity detection fixture according to the present invention.

[0017] Figure 4 This is a schematic diagram of the guide post structure of a guide post cylindricity detection tool according to the present invention.

[0018] Figure 5 This is a schematic cross-sectional view of the guide post structure of a guide post cylindricity testing tool according to the present invention.

[0019] In the diagram: 1. Base; 2. Limiting mechanism; 201. Mounting bracket; 202. Lifting cylinder; 203. Lifting frame; 204. Motor; 205. Limiting frame; 206. Limiting wheel; 207. Drive wheel; 3. First mounting plate; 4. Second mounting plate; 5. Third mounting plate; 6. Second roller; 7. First roller; 8. Cylindricity measuring instrument; 801. Electric cylinder; 802. Movable seat; 803. Lifting mechanism; 804. Lifting seat; 805. Detection rod; 806. Probe; 9. Fourth mounting plate; 10. Camera. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1The guide post cylindricity detection fixture of this embodiment includes a base 1. A limiting mechanism 2 is provided on the top of the base 1 to limit the guide post in the vertical direction and drive the guide post to rotate during detection. A first mounting plate 3 and a second mounting plate 4 are respectively provided on both sides of the limiting mechanism 2. A third mounting plate 5 is provided on the side of the second mounting plate 4 away from the limiting mechanism 2. A pair of first rollers 7 are symmetrically rotatably connected to the top of the sidewall of the first mounting plate 3. A pair of second rollers 6 are symmetrically rotatably connected between the top of the opposing sidewalls of the second mounting plate 4 and the third mounting plate 5. The system includes a mounting bracket 201, a lifting cylinder 202 vertically fixedly connected to the top of the mounting bracket 201, a lifting frame 203 fixedly connected to the piston rod of the lifting cylinder 202, a motor 204 horizontally fixedly connected to the lower side of the end of the lifting frame 203 facing the first mounting plate 3, a drive wheel 207 fixedly connected to the shaft of the motor 204, a limit frame 205 fixedly connected to the lower side of the other end of the lifting frame 203, a pair of limit wheels 206 symmetrically rotatably connected to the bottom sides of the limit frame 205, and a cylindricity detector 8 is provided on the top side of the base 1 away from the third mounting plate 5. Before inspection, the guide post is placed horizontally between the tops of a pair of first rollers 7 and second rollers 6. Then, the lifting cylinder 202 drives the lifting frame 203 to move downwards, causing the motors 204 and limit frames 205 on both sides of the lifting frame 203 to move downwards as well, until the drive wheel 207 and limit wheel 206 contact the top of the guide post. At this time, the motor 204 is started, causing the drive wheel 207 to start rotating. When the drive wheel 207 rotates, it drives the guide post to rotate under the action of friction, causing the first rollers 7, second rollers 6 and limit wheels 206 to rotate as well. During the rotation of the guide post, the limit wheels 206 on both sides of its top can limit it, preventing the guide post from slipping out between the first rollers 7 and second rollers 6. Then, the cylindricity of the shaft hole of the guide post is measured by the cylindricity measuring instrument 8. Through the above steps, the workpiece can be quickly and horizontally clamped.

[0022] The cylindricity measuring instrument 8 includes an electric cylinder 801, which is horizontally fixedly connected to the top of the base 1. The piston rod of the electric cylinder 801 is fixedly connected to a movable seat 802, which is slidably connected to the base 1. A lifting mechanism 803 is fixedly connected to the side wall of the movable seat 802 facing the third mounting plate 5. A lifting platform of the lifting mechanism 803 is fixedly connected to a lifting seat 804. A detection rod 805 is fixedly connected to the side wall of the lifting seat 804. A probe 806 is rotatably connected to the end of the detection rod 805 facing the third mounting plate 5. During testing, the lifting mechanism 803 drives the lifting seat 804 and the detection rod 805 to move upward until the height of the probe 806 is higher than the bottom of the shaft hole of the guide post facing the electric cylinder 801. Then, the electric cylinder 801 drives the movable seat 802 and the probe 806 to extend into the inner side of the guide post shaft hole facing the electric cylinder 801. At this time, the lifting mechanism 803 drives the probe 806 to move downward until the end of the probe 806 contacts the inner wall of the guide post shaft hole. As the guide post rotates, the cylindrical part of the guide post shaft hole facing the electric cylinder 801 can be tested. The above steps are repeated to accurately measure the cylindricity of the middle part and the end away from the electric cylinder 801 of the guide post shaft hole. During the test, the probe 806 is adjusted at the detection point of the inner wall of the shaft hole with different diameters, and the average value of the detection results is taken to improve the detection accuracy. Through the above steps, the axis of the workpiece can be kept parallel to the detection rod during the test, and the height of the probe can be adjusted according to the diameter of the shaft hole, so that the probe can always keep in contact with the inner wall of the shaft hole, thereby realizing the rapid and accurate detection of workpieces with different shaft hole diameters.

[0023] The first mounting plate 3, the second mounting plate 4, and the third mounting plate 5 are all perpendicular to the base 1; the axes of the first roller 7, the second roller 6, the drive wheel 207, and the limit wheel 206 are all perpendicular to the side wall of the second mounting plate 4.

[0024] A fourth mounting plate 9 is fixedly connected to the top of the base 1, away from the cylindricity measuring instrument 8. A camera 10 is detachably connected horizontally to the top of the fourth mounting plate 9. By setting up the camera 10, visual guidance can be provided to the probe 806 when adjusting the detection point, thereby improving detection efficiency and accuracy.

[0025] Working principle: Before testing, the guide column is placed horizontally between the tops of a pair of first rollers 7 and second rollers 6. Then, the lifting cylinder 202 drives the lifting frame 203 to move downwards, causing the motors 204 and limit frames 205 on both sides of the lifting frame 203 to move downwards as well, until the drive wheel 207 and limit wheel 206 contact the top of the guide column. At this time, the motor 204 is started, causing the drive wheel 207 to start rotating. When the drive wheel 207 rotates, it drives the guide column to rotate under the action of friction, causing the first rollers 7, second rollers 6 and limit wheels 206 to rotate as well. During the rotation of the guide column, the limit wheels 206 on both sides of its top can limit it, preventing the guide column from slipping out between the first rollers 7 and second rollers 6. Then, the cylindricity of the shaft hole of the guide column is tested by the cylindricity measuring instrument 8. Through the above steps, the workpiece can be quickly and horizontally clamped.

[0026] During testing, the lifting mechanism 803 drives the lifting seat 804 and the detection rod 805 upwards until the height of the probe 806 is higher than the bottom of the shaft hole at the end of the guide post facing the electric cylinder 801. Then, the electric cylinder 801 drives the movable seat 802 and the probe 806 to extend into the inner side of the guide post shaft hole facing the electric cylinder 801. At this time, the lifting mechanism 803 drives the probe 806 downwards until the end of the probe 806 contacts the inner wall of the guide post shaft hole. As the guide post rotates, the cylindricity of the guide post shaft hole facing the electric cylinder 801 can be detected. Then, the above steps are repeated to detect the cylindricity of the middle part and the part away from the electric cylinder 801 of the guide post shaft hole. The cylinder 801 is precisely cylindrical at one end. During testing, the probe 806 is adjusted to detect the points on the inner wall of the shaft hole at different diameters, and the average value of the detection results is taken to improve the detection accuracy. Through the above steps, the workpiece's axial direction can be kept parallel to the detection rod during testing, and the height of the probe can be adjusted according to the diameter of the shaft hole, so that the probe can always maintain contact with the inner wall of the shaft hole, thereby achieving rapid and accurate detection of workpieces with different shaft hole diameters. When the probe 806 moves, the camera 10 can provide visual guidance when the probe 806 is adjusting the detection points, thereby improving detection efficiency and accuracy.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A tooling for detecting the cylindricity of guide posts, characterized in that: The device includes a base (1), a limiting mechanism (2) on the top of the base (1), a first mounting plate (3) and a second mounting plate (4) on both sides of the limiting mechanism (2), a third mounting plate (5) on the side of the second mounting plate (4) away from the limiting mechanism (2), a pair of first rollers (7) symmetrically rotatably connected to the top of the side wall of the first mounting plate (3), and a pair of second rollers (6) symmetrically rotatably connected between the top of the opposing side walls of the second mounting plate (4) and the third mounting plate (5). The limiting mechanism (2) includes a mounting frame (201), and the top of the mounting frame (201) is... A lifting cylinder (202) is vertically fixedly connected. The piston rod of the lifting cylinder (202) is fixedly connected to a lifting frame (203). A motor (204) is horizontally fixedly connected to the lower side of one end of the lifting frame (203) facing the first mounting plate (3). A drive wheel (207) is fixedly connected to the shaft of the motor (204). A limit frame (205) is fixedly connected to the lower side of the other end of the lifting frame (203). A pair of limit wheels (206) are symmetrically rotated on both sides of the bottom of the limit frame (205). A cylindricity detector (8) is provided on the top side of the base (1) away from the third mounting plate (5).

2. The guide post cylindricity detection fixture according to claim 1, characterized in that: The cylindricity measuring instrument (8) includes an electric cylinder (801), which is horizontally fixedly connected to the top of the base (1). The piston rod of the electric cylinder (801) is fixedly connected to a movable seat (802), which is slidably connected to the base (1).

3. The guide post cylindricity detection fixture according to claim 2, characterized in that: The movable seat (802) is fixedly connected to a lifting mechanism (803) on one side wall facing the third mounting plate (5). The lifting platform of the lifting mechanism (803) is fixedly connected to a lifting seat (804). The side wall of the lifting seat (804) is fixedly connected to a detection rod (805). The end of the detection rod (805) facing the third mounting plate (5) is rotatably connected to a probe (806).

4. The guide post cylindricity detection fixture according to claim 1, characterized in that: The first mounting plate (3), the second mounting plate (4) and the third mounting plate (5) are all set perpendicular to the base (1).

5. The guide post cylindricity detection fixture according to claim 1, characterized in that: The axes of the first roller (7), the second roller (6), the drive wheel (207), and the limiting wheel (206) are all perpendicular to the side wall of the second mounting plate (4).

6. The guide post cylindricity detection fixture according to claim 1, characterized in that: A fourth mounting plate (9) is fixedly connected to the top of the base (1) away from the cylindricity measuring instrument (8), and a camera (10) is detachably connected to the top of the fourth mounting plate (9) horizontally.

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