A detection device for workpiece shaft holes

Abstract

This utility model discloses a detection device for workpiece shaft holes, including a mounting frame, a lifting drive mechanism, and a detection mechanism. The detection mechanism includes a push cylinder, a top-contact sensor, a pen-type sensor, and two symmetrically arranged sliding plates, each with a positioning bracket. The top-contact sensor is mounted on the positioning bracket of one of the sliding plates. Two bearings are mounted on the positioning bracket with the top-contact sensor, and the probe of the top-contact sensor is positioned between the two bearings. The other positioning bracket has a second bearing. This utility model's detection device designs the workpiece shaft hole measurement in a two-stage manner. The structural design, combined with the pen-type sensor, allows for large-distance measurement movement, resulting in a wide measurable range of workpiece shaft holes, meeting market demands. The addition of a top-contact sensor to the pen-type sensor's movement measurement provides more accurate measurement data and eliminates measurement errors.

Description

Technical Field

[0001] This utility model relates to the field of workpiece shaft hole detection technology, and in particular to a detection device for workpiece shaft holes. Background Technology

[0002] In machining, after a workpiece is machined, it is necessary to inspect whether its dimensions meet the requirements. This includes inspecting shaft holes, especially for wheel hubs where the inspection is particularly rigorous. Traditionally, the diameter of the shaft hole is directly measured to determine if the hole size meets the machining requirements.

[0003] However, when measuring the direct diameter of the shaft hole of a workpiece, the existing measuring device has a limited measuring range, which cannot meet the measurement of shaft holes of various specifications. Moreover, it is difficult to accurately determine the position of the diameter of the hole, resulting in a deviation between the actual measured target and the diameter, causing measurement errors and making it impossible to accurately determine whether the size of the hole of the workpiece meets the requirements. Therefore, it is very necessary to improve the existing technology. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art and provide a detection device for workpiece shaft holes.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A detection device for a workpiece shaft hole includes a mounting frame, a lifting drive mechanism, and a detection mechanism. The detection mechanism includes a push cylinder, a top contact sensor, a pen-type sensor, and two symmetrically arranged sliding plates. Each sliding plate is equipped with a stop positioning frame. The top contact sensor is mounted on the stop positioning frame of one of the sliding plates. The stop positioning frame on which the top contact sensor is mounted is equipped with two stop bearings, and the stylus of the top contact sensor is located between the two stop bearings. The other stop positioning frame is equipped with one stop bearing. The lifting drive mechanism drives the entire detection mechanism to rise and fall, so that the measuring end of the pen sensor and the end of the abutting positioning frame are positioned in the workpiece shaft hole. The push cylinder drives the two sliding plates to move away until the abutting bearings one and two on the end of the abutting positioning frame, as well as the stylus on the pen sensor, abut against the workpiece shaft hole. The pen sensor detects the distance the two sliding plates have moved, and the top contact sensor abuts against the workpiece shaft hole, generating deformation.

[0006] In the aforementioned detection device for workpiece shaft holes, the push cylinder is mounted on one of the sliding plates, and its lever is connected to the other sliding plate. The two sliding plates are slidably mounted on the lifting drive mechanism. The pen sensor is fixedly mounted on one of the sliding plates, and the end of its test rod is connected to the other sliding plate. The pen sensor measures the distance moved between the two sliding plates, and the sliding plates move synchronously with the top contact sensor abutting against the positioning frame.

[0007] In the above-mentioned detection device for workpiece shaft holes, the center points of the two bearings abutting the first bearing form a center line L1, the center point of the second bearing abutting the first bearing and the center line L1 form a center line L2, and the stylus on the top contact sensor is located on the center line L2.

[0008] In the above-mentioned detection device for workpiece shaft holes, one end of the top contact sensor is connected to the abutment positioning frame, and the stylus at the other end can deform during the process of abutting against the workpiece shaft hole. The top contact sensor uses the deformation feedback system of the stylus abutting to calculate the linear distance L3 of the stylus movement.

[0009] In the aforementioned detection device for workpiece shaft holes, a buffer is provided on the mounting plate, and the buffer is located between two sliding plates.

[0010] In the above-mentioned detection device for workpiece shaft holes, the mounting frame includes a base plate, a box, and a placement rack. The box has a through hole for the detection mechanism to lift and lower, and the placement rack is mounted on the box.

[0011] In the above-mentioned detection device for workpiece shaft holes, the lifting drive mechanism includes a lead screw drive module and a lead screw motor. The lead screw drive module is fixedly connected to the base plate through a seat plate. The lead screw drive module is also provided with a mounting plate. The mounting plate is slidably connected to two sliding plates through a slide rail assembly.

[0012] In the aforementioned detection device for workpiece shaft holes, a sensor is installed on the push cylinder.

[0013] In the aforementioned detection device for workpiece shaft holes, the abutment positioning frame is provided with a positioning groove for positioning the side of the top contact sensor.

[0014] In the aforementioned detection device for workpiece shaft holes, a position sensor is provided on the base plate, and a sensing element is provided on the lead screw drive module.

[0015] The advantages of this utility model: The detection device in this invention features a two-stage measurement system for the workpiece's shaft hole. The structural design, combined with a pen-type sensor, allows for large-distance measurement movement, covering a wide range of workpiece shaft holes to meet market demands. Furthermore, a top-contact sensor is incorporated into the pen-type sensor's movement measurement, resulting in more accurate measurement data and eliminating measurement errors. The measured data is then compared with pre-set values ​​in the system. If the comparison is successful, the hole's dimensions meet the requirements; otherwise, the hole's dimensions do not meet the requirements. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the detection device of this utility model; Figure 2 This is a perspective view of the detection device of this utility model (excluding the mounting frame housing); Figure 3 This is a cross-sectional view of the detection device (including the workpiece) of this utility model; Figure 4 yes Figure 3 Enlarged view of part A in the image; Figure 5 This is a three-dimensional view of part of the detection device of this utility model; Figure 6 , Figure 7 These are perspective views of the detection mechanism in this utility model from two different directions; Figure 8 This is a schematic diagram of the plane measured by the detection device of this utility model. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0023] Please see Figures 1 to 8The present invention provides a detection device for a workpiece shaft hole, comprising a mounting frame 10, a lifting drive mechanism 11, and a detection mechanism 12. The detection mechanism 12 includes a push cylinder 13, a top contact sensor 14, a pen-type sensor 15, and two symmetrically arranged sliding plates 16. Each sliding plate 16 is provided with a stop positioning frame 17. The top contact sensor 14 is mounted on the stop positioning frame 17 of one of the sliding plates 16. Two stop bearings 18 are provided on the stop positioning frame 17 on which the top contact sensor 14 is mounted. The stylus 14-1 of the top contact sensor 14 is positioned between the two stop bearings 18. The other stop positioning frame 17 is provided with a stop bearing 19. Figure 8 As shown, the center points of the two abutting bearings 18 form a center line L1, and the center point of the abutting bearing 19 and the center line L1 form a center line L2. The stylus 14-1 on the top contact sensor 14 is located on the center line L2. One end of the top contact sensor 14 is connected to the abutting positioning frame 17, and the stylus 14-1 at the other end can deform during the process of abutting against the workpiece shaft hole. The top contact sensor 14 uses the deformation feedback system of the stylus abutting to calculate the linear distance L3 of the stylus movement.

[0024] The lifting drive mechanism 11 drives the detection mechanism 12 to lift as a whole, so that the measuring end of the pen sensor 15 and the end of the abutting positioning frame 17 are respectively in the workpiece shaft hole. The push cylinder 13 drives the two sliding plates 16 to move away until the abutting bearing 18 and abutting bearing 19 on the end of the abutting positioning frame 17 and the stylus 14-1 on the pen sensor 15 abut against the workpiece shaft hole. The pen sensor 15 detects the distance moved by the two sliding plates 16, and the top contact sensor 14 abuts against the workpiece shaft hole, generating deformation.

[0025] Furthermore, the push cylinder 13 is mounted on one of the sliding plates 16, and its lever 13-1 is connected to the other sliding plate 16. The two sliding plates 16 are slidably mounted on the lifting drive mechanism 11. The pen sensor 15 is fixedly mounted on one of the sliding plates 16, and the end of its test rod 15-1 is connected to the other sliding plate 16. The pen sensor 15 measures the distance moved between the two sliding plates 16. The sliding plates 16 move synchronously with the top contact sensor 14 abutting against the positioning frame 17.

[0026] Furthermore, a buffer 25 is provided on the mounting plate 23, and the buffer 25 is located between the two sliding plates 16.

[0027] Furthermore, the mounting frame 10 includes a base plate 10-1, a housing 10-2, and a placement rack 10-3. The housing 10-2 is provided with a through hole 10-4 for the detection mechanism 12 to move up and down, and the placement rack 10-3 is mounted on the housing 10-2.

[0028] Furthermore, the lifting drive mechanism 11 includes a lead screw drive module 20 and a lead screw motor 21. The lead screw drive module 20 is fixedly connected to the base plate 10-1 through a seat plate 22. A mounting plate 23 is also provided on the lead screw drive module 20. The mounting plate 23 is slidably connected to the two sliding plates 16 through a slide rail assembly 24.

[0029] Furthermore, a sensor 13-2 is provided on the push cylinder 13. The sensor 13-2 can detect the operation of the push cylinder.

[0030] Furthermore, the abutment positioning frame 17 is provided with a positioning groove 17-1 for positioning the side of the top contact sensor 14. This prevents misalignment during the abutment movement of the top contact sensor 14.

[0031] Furthermore, a position sensor 35 is provided on the base plate 10-1, and a sensing element 36 is provided on the lead screw drive module 20.

[0032] After the workpiece to be measured is placed on the placement rack 10-3, the detection mechanism 12 rises under the drive of the lifting mechanism 11 until the measuring end of the pen sensor 15 (i.e., the stylus 14-1) and the end of the abutment positioning frame 17 (i.e., the abutment bearing 18 and the abutment bearing 19) are respectively positioned in the workpiece shaft hole; then the push cylinder 13 drives the two sliding plates 16 to move away until the abutment bearing 18 and the abutment bearing 19 abut against the inner wall of the shaft hole 300-1 of the workpiece 300. Due to the triangular design of the two abutment bearings 18 and the abutment bearing 19, the top contact sensor 14 will press the stylus... 14-1 is ultimately positioned on the center line of the shaft hole 300-1 (i.e., on the center line L2 formed by the center point of bearing 19 and the center line L1). The pen-type sensor 15 measures the distance the two sliding plates 16 have moved (i.e., the length of the center line L2). The top contact sensor 14 calculates the linear distance L3 of the stylus movement by having the stylus 14-1 abut against the deformation system. The length of the center line L2 plus L3 is the total measured length. The measured data is then compared with the preset values ​​in the system. If the comparison is successful, the size of the round hole meets the requirements; if the comparison fails, the size of the round hole does not meet the requirements. After the measurement is completed, the top push cylinder 13 is de-pressed and reset, and the lifting drive mechanism 11 is reset. To facilitate position control, the lifting drive mechanism 11 is also equipped with a position sensor 11-1.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the patent protection scope of this utility model should be determined by the appended claims.

Claims

1. A detection device for a workpiece shaft hole, characterized in that: The system includes a mounting frame (10), a lifting drive mechanism (11), and a detection mechanism (12). The detection mechanism (12) includes a push cylinder (13), a top touch sensor (14), a pen sensor (15), and two symmetrically arranged sliding plates (16). A backing positioning frame (17) is provided on the sliding plate (16). The top touch sensor (14) is installed on the backing positioning frame (17) of one of the sliding plates (16). Two backing bearings (18) are provided on the backing positioning frame (17) on which the top touch sensor (14) is installed. The stylus (14-1) on the top touch sensor (14) is located between the two backing bearings (18). A second backing bearing (19) is provided on the other backing positioning frame (17). The lifting drive mechanism (11) drives the detection mechanism (12) to lift as a whole, so that the measuring end of the pen sensor (15) and the end of the abutting positioning frame (17) are respectively in the workpiece shaft hole. The push cylinder (13) drives the two sliding plates (16) to move away until the abutting bearing one (18) and abutting bearing two (19) on the end of the abutting positioning frame (17) and the stylus (14-1) on the pen sensor (15) abut against the workpiece shaft hole. The pen sensor (15) detects the distance moved by the two sliding plates (16). The top contact sensor (14) abuts against the workpiece shaft hole and generates deformation.

2. The detection device for a workpiece shaft hole according to claim 1, characterized in that: The push cylinder (13) is mounted on one of the sliding plates (16), and its lever (13-1) is connected to the other sliding plate (16). The two sliding plates (16) are slidably mounted on the lifting drive mechanism (11). The pen sensor (15) is fixedly mounted on one of the sliding plates (16), and the end of its test rod (15-1) is connected to the other sliding plate (16). The pen sensor (15) measures the distance moved between the two sliding plates (16). The sliding plate (16) moves synchronously with the top contact sensor (14) on the positioning frame (17).

3. The detection device for a workpiece shaft hole according to claim 1, characterized in that: The center points of the two abutting bearings (18) form a center line L1, and the center point of the abutting bearing (19) and the center line L1 form a center line L2. The stylus (14-1) on the top contact sensor (14) is located on the center line L2.

4. The detection device for a workpiece shaft hole according to claim 3, characterized in that: One end of the top contact sensor (14) is connected to the abutment positioning frame (17), and the stylus (14-1) at the other end can deform during the process of abutting against the workpiece shaft hole. The top contact sensor (14) uses the deformation of the stylus abutting against the workpiece as feedback system to calculate the linear distance L3 of the stylus movement.

5. The detection device for a workpiece shaft hole according to claim 1, characterized in that: The installation and placement frame (10) includes a base plate (10-1), a box (10-2), and a placement rack (10-3). The box (10-2) is provided with a through hole (10-4) for the detection mechanism (12) to lift and lower. The placement rack (10-3) is installed on the box (10-2).

6. The detection device for a workpiece shaft hole according to claim 5, characterized in that: The lifting drive mechanism (11) includes a lead screw drive module (20) and a lead screw motor (21). The lead screw drive module (20) is fixedly connected to the base plate (10-1) through the seat plate (22). The lead screw drive module (20) is also provided with an mounting plate (23). The mounting plate (23) and the two sliding plates (16) are slidably connected through the slide rail assembly (24).

7. The detection device for a workpiece shaft hole according to claim 6, characterized in that: A buffer (25) is provided on the mounting plate (23), and the buffer (25) is located between two sliding plates (16).

8. A detection device for a workpiece shaft hole according to claim 1 or 2, characterized in that: The push cylinder (13) is equipped with a sensor (13-2).

9. A detection device for a workpiece shaft hole according to claim 1 or 4, characterized in that: The abutment positioning frame (17) is provided with a positioning groove (17-1) for positioning the side of the top contact sensor (14).

10. A detection device for a workpiece shaft hole according to claim 6, characterized in that: A position sensor (35) is provided on the base plate (10-1), and a sensing element (36) is provided on the lead screw drive module (20).

Images