Shaft outer diameter high-precision detection equipment

Abstract

The application provides a high-precision shaft outer diameter detection device, and belongs to the technical field of shaft workpiece detection. The high-precision shaft outer diameter detection device comprises a shaft diameter detection device, a material distribution mechanical hand device, a detection platform and a mechanical hand mounting rack. The shaft diameter detection device is arranged on the detection platform, is driven by a stepping motor to move along a guide rail, and is matched with multiple sets of shaft diameter micrometers to realize non-contact measurement. The material distribution mechanical hand device is installed on the mechanical hand mounting rack, adopts a three-track linkage structure, and realizes automatic feeding and sorting through a mechanical hand chuck. The multiple sets of shaft diameter micrometers solve the problems of low efficiency and poor precision of the traditional shaft diameter detection mode, and have a fault self-checking function. The multiple matching connections between the shaft fixing seat and the shaft moving guide rail realize directional high-stable moving detection. The material distribution mechanical hand device is arranged to form a full-automatic detection process, effectively improves the detection efficiency, and has the advantages of high precision, high efficiency, stability and reliability.

Description

Technical Field

[0001] This invention belongs to the field of shaft workpiece inspection technology, and specifically relates to a high-precision shaft outer diameter inspection device. Background Technology

[0002] Shafts are a crucial component of motors, and their shape and precision directly affect the stable operation and efficient production of motor equipment. Especially with the continuous development of industrialization, the demand for shafts in existing machinery is gradually increasing, and the precision requirements for shafts are also gradually rising. Therefore, shaft diameter inspection is an effective way to control shaft precision under current technology. Traditional shaft diameter inspection methods include simple manual visual inspection or a combination of manual visual inspection with mechanical measuring tools and optical instruments for random sampling, as well as inspection using industrial cameras. However, manual inspection often suffers from low efficiency, poor reliability, low inspection accuracy, and high cost. Industrial camera inspection has low inspection accuracy, unstable inspection data, is greatly affected by external light, and has a slow inspection speed.

[0003] Patent CN112588601A discloses a device for detecting the rib diameter and overall diameter of shafts. It features a hopper mechanism on a support plate, along with a module transport mechanism, a rib diameter detection mechanism, a diameter detection mechanism, a conveying mechanism, and a sorting mechanism. The module transport mechanism includes a clamping mechanism, which drives the clamping mechanism. The rib diameter and diameter detection mechanisms then respectively detect the rib diameter and overall diameter of the parts. While this patent can replace manual operation to some extent, achieving fully automated detection with high speed, its shaft diameter detection relies on multiple sensors (A-F). These sensors are susceptible to environmental influences, and a malfunction in one sensor can trigger a chain reaction of detection errors that is difficult to troubleshoot, resulting in significant uncertainty. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a high-precision shaft outer diameter detection device.

[0005] The objective of this invention can be achieved through the following technical solution: a high-precision shaft outer diameter detection device, comprising a shaft diameter detection device, a material dispensing robot device, a detection platform, and a robot mounting frame; The shaft diameter detection device is set on a horizontal detection platform. The shaft diameter detection device mainly consists of a shaft moving guide rail and a shaft fixing seat, a shaft diameter micrometer, and a micrometer fixing seat. The shaft fixing seat has an overall U-shaped structure, and the shaft to be tested can be positioned and installed between the top ends of the U-shape. The bottom of the shaft fixing seat is fixed to a sliding base plate. A moving guide plate is suspended on the top of the shaft moving guide rail, and strip-shaped guide grooves are opened on the outer side walls of the guide rail seat below the moving guide plate. The sliding base plate has a sliding plate positioning seat fixedly connected to its bottom and sleeved on the outside of the moving guide plate. The two sides of the sliding plate positioning seat are detachably connected to sliding blocks through a hinge structure. The sliding blocks cooperate with the guide groove of the shaft moving guide rail to realize the stable movement of the shaft fixing seat during testing. The movement of the shaft fixing seat on the shaft moving guide rail is controlled by a stepper motor. The stepper motor transmits torque to the screw structure fixed to the bottom of the sliding plate positioning seat through a transmission box installed on the end face of the shaft moving guide rail, thereby realizing the movement adjustment of the shaft fixing seat. An inverted U-shaped micrometer mounting base is installed on the outer side of the shaft moving guide rail. A shaft diameter micrometer is suspended on the top of the micrometer mounting base, and the two probes of the shaft diameter micrometer are located on both sides of the shaft mounting base. The robotic arm mounting frame is located at the rear of the detection platform, and a mounting platform frame extends horizontally from it. The mounting platform frame is equipped with a material dispensing robotic arm device. The material dispensing robotic arm device mainly consists of a three-rail linkage structure formed by a horizontal moving guide rail, a front and rear moving guide rail, and a vertical moving guide rail. A cylinder connecting plate is adjustablely connected to the side of the vertical moving guide rail, and a robotic arm gripper for gripping and placing the detection shaft is fixedly connected to the bottom of the cylinder connecting plate.

[0006] In the aforementioned high-precision shaft outer diameter testing device, a roller seat is formed by the U-shaped protrusion in the middle of the shaft fixing seat. A groove is provided in the middle of the top of the roller seat, and a set of shaft rollers are symmetrically arranged in the groove with the shaft to be tested as the axis. Corresponding sets of shaft rollers can be arranged on the inner sidewalls of both ends of the U-shape of the shaft fixing seat, similar to the roller seat. The cooperation of the two sets of shaft rollers at the front and rear can facilitate multiple tests after the shaft to be tested has been adjusted by rolling.

[0007] In the aforementioned high-precision shaft outer diameter detection device, the shaft diameter micrometer is equipped with a remote sensing signal device connected to the top of the micrometer mounting base for receiving commands and sending detection data.

[0008] In the aforementioned high-precision shaft outer diameter testing device, the shaft diameter micrometer and micrometer fixing base are provided with two or more sets in the middle section of the shaft moving guide rail. The shaft outer diameter testing data of the shaft to be tested should be obtained by integrating multiple sets of data to obtain a high-precision reading. On the other hand, it can facilitate timely detection and troubleshooting when a certain shaft diameter micrometer malfunctions.

[0009] In the aforementioned high-precision shaft outer diameter testing equipment, the horizontal moving guide rail of the material dispensing robot is fixedly connected to the mounting platform frame of the robot mounting frame, the front and rear moving guide rails are slidably mounted on the horizontal moving guide rails via a motor moving plate, and the vertical moving guide rails are slidably mounted on the front and rear moving guide rails via a cylinder moving plate.

[0010] In the aforementioned high-precision shaft outer diameter detection device, the motor moving plate and cylinder moving plate of the material distribution manipulator are controlled and adjusted by the rotary motors on the horizontal moving guide rail and the front and rear moving guide rail, respectively, and the cylinder connecting plate is controlled and adjusted vertically by the hydraulic cylinder at the top of the vertical moving guide rail.

[0011] Compared with existing technologies, the high-precision shaft outer diameter detection device provided by this invention achieves high-precision detection of the outer diameter of the shaft to be tested by setting up multiple sets of shaft diameter micrometers; the shaft fixing seat achieves highly stable directional movement detection on the shaft moving guide rail through multiple mating connections between the shaft fixing seat and the shaft moving guide rail, further improving the accuracy of shaft outer diameter detection; and the automatic clamping and placement of the shaft before and after detection is achieved by setting up a material dispensing robot device, forming a fully automatic detection process and effectively improving detection efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the high-precision outer diameter testing equipment for this shaft; Figure 2 This is a schematic diagram of the front structure of the shaft diameter detection device in this high-precision shaft outer diameter detection equipment; Figure 3 This is a schematic diagram of the rear structure of the shaft diameter detection device in this high-precision shaft outer diameter detection equipment; Figure 4 This is a schematic diagram of the material distribution robot device in the high-precision outer diameter detection equipment for this shaft.

[0013] In the above figures, 100 is the shaft diameter detection device; 110 is the shaft moving guide rail; 111 is the moving guide plate; 112 is the guide groove; 113 is the stepper motor; 114 is the transmission box; 120 is the shaft fixing seat; 121 is the sliding base plate; 122 is the slide plate positioning seat; 123 is the hinge structure; 124 is the sliding block; 125 is the roller seat; 126 is the shaft rolling wheel; 130 is the shaft diameter micrometer; 131 is the micrometer fixing seat; and 132 is the remote sensing signal device. 200. Material sorting robot device; 210. Horizontal moving guide rail; 211. Motor moving plate; 220. Forward and backward moving guide rail; 221. Rotary motor; 222. Cylinder moving plate; 230. Vertical moving guide rail; 231. Hydraulic cylinder; 232. Cylinder connecting plate; 240. Robot gripper; 300. Detection platform; 400. Robot mounting frame; 410. Mounting platform frame. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] Example 1: As Figures 1 to 4As shown, the present invention provides a high-precision shaft outer diameter detection device, mainly including a shaft diameter detection device 100, a material distribution robot device 200, a detection platform 300, and a robot mounting frame 400. The shaft diameter detection device 100 is disposed on the horizontal detection platform 300, and the robot mounting frame 400 is located on the rear side of the detection platform 300, with a horizontally extending mounting platform frame 410 formed on it, and the material distribution robot device 400 is mounted on the mounting platform frame 410.

[0016] like Figures 2 to 3 As shown, the shaft diameter detection device 100 mainly consists of a shaft moving guide rail 110 and a shaft fixing seat 120, a shaft diameter micrometer 130, and a micrometer fixing seat 131. The shaft moving guide rail 110 is horizontally set on the detection platform 300, with a moving guide plate 111 suspended above its U-shaped top. Strip-shaped guide grooves 112 are opened on both sides of the guide rail seat. The shaft fixing seat 120 has a U-shaped structure, with its bottom fixed to the sliding base plate 121, and is slidably connected to the moving guide plate 111 via a sliding plate positioning seat 122. Sliding blocks 124 are connected to both sides of the sliding plate positioning seat 122 via hinge structures 123, which cooperate with the guide grooves 112 to ensure movement stability. A stepper motor 113 drives a screw structure through a transmission box 114 to control the precise movement of the shaft fixing seat 120 along the guide rail.

[0017] The micrometer mounting base 131 is mounted in an inverted U-shape on the outside of the shaft moving guide rail 110, with the shaft diameter micrometer 130 suspended from the top. Its probes are located on both sides of the shaft mounting base 120, enabling non-contact, high-precision measurement. The shaft diameter micrometer 130 is connected to the remote sensing signal device 132 for remote data transmission. The roller seat 125 is located in the middle of the U-shape of the shaft mounting base 120, with symmetrical shaft rollers 126 arranged in the top groove. Corresponding roller sets are also provided on the inner sides of both ends of the U-shape, facilitating the rolling adjustment of the shaft under test and enabling multi-point detection.

[0018] like Figure 4 As shown, the material sorting robot device 200 mainly consists of a three-rail linkage structure formed by a horizontal moving guide rail 210, a front-to-back moving guide rail 220, and a vertical moving guide rail 230. The horizontal moving guide rail 210 is fixed on the mounting platform frame 410. The front-to-back moving guide rail 220 is slidably connected to the horizontal moving guide rail 210 through a motor moving plate 211. The vertical moving guide rail 230 is slidably connected to the front-to-back moving guide rail 222 through a cylinder moving plate 222. Two rotary motors 221 control the horizontal and front-to-back movements respectively, and the hydraulic cylinder 231 drives the cylinder connecting plate 232 to move vertically. The end effector robot gripper 240 realizes automatic gripping and sorting of the shaft to be tested.

[0019] The shaft outer diameter detection process of this invention is as follows: 1. Loading: The sorting robot 200 picks up the shaft to be tested and places it on the roller set of the shaft fixing seat 120; 2. Positioning: The stepper motor 113 drives the shaft fixing seat 120 to move, so that the shaft section is located between the two probes of the shaft diameter micrometer 130; 3. Inspection: The shaft roller 126 drives the shaft to rotate, and multiple sets of micrometers simultaneously collect the outer diameter data, and the remote sensing signal device 132 uploads the inspection data; 4. Sorting: The robot classifies the shafts and places them into qualified / unqualified areas according to the inspection results.

[0020] Example 2: To improve the accuracy of the detection data, redundant detection design is added. At least two sets of shaft diameter micrometers 130 are set in the middle section of the shaft moving guide rail 110. The accuracy is improved by comparing multiple sets of data, and an alarm can be set in time when a single set fails.

[0021] To further explain, the sliding base plate 121 and the slide positioning seat 122 adopt a damped hinge structure 123 to reduce the impact of movement vibration on the measurement. The robotic gripper 240 integrates a pressure sensor to prevent excessive clamping force from causing shaft deformation.

[0022] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0023] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A high-precision shaft outer diameter testing device, comprising a shaft diameter testing device (100), a material dispensing robot (200), a testing platform (300), and a robot mounting frame (400); Its features are, The shaft diameter detection device (100) is set on a horizontal detection platform (300). The shaft diameter detection device (100) mainly consists of a shaft moving guide rail (110) and a shaft fixing seat (120), a shaft diameter micrometer (130) and a micrometer fixing seat (131) on it. The shaft fixing seat (120) has an overall U-shaped structure. The shaft to be tested can be positioned and installed between the top ends of its U-shape. The bottom of the shaft fixing seat (120) is fixedly connected to the sliding base plate (121). A moving guide plate (111) is suspended on the top of the shaft moving guide rail (110). Strip guide grooves (112) are opened on the outer side walls of the guide rail seat below the moving guide plate (111). The sliding base plate (121) has a sliding plate positioning seat (122) fixedly connected to the bottom and sleeved on the outside of the moving guide plate (111). The two sides of the sliding plate positioning seat (122) are detachably connected to sliding blocks (124) through hinge structure (123). The sliding blocks (124) cooperate with the guide groove (112) of the shaft moving guide rail (110) to realize the stable movement of the shaft fixing seat (120) during testing. The movement of the shaft fixing seat (120) on the shaft moving guide rail (110) is controlled by a stepper motor (113). The stepper motor (113) transmits torque to the screw structure fixed to the bottom of the sliding plate positioning seat through the transmission box (114) installed on the end face of the shaft moving guide rail (110), thereby realizing the movement adjustment of the shaft fixing seat (120). An inverted U-shaped micrometer mounting base (131) is mounted on the outer side of the shaft moving guide rail (110). A shaft diameter micrometer (130) is suspended on the top of the micrometer mounting base (131). The two probes of the shaft diameter micrometer (130) are located on both sides of the shaft mounting base (120). The robotic arm mounting frame (400) is located on the rear side of the detection platform (300), and a mounting platform frame extends horizontally from it. The mounting platform frame is equipped with a material dispensing robotic arm device (200). The material dispensing robotic arm device (200) mainly consists of a three-rail linkage structure formed by a horizontal moving guide rail (210), a front and rear moving guide rail (220), and a vertical moving guide rail (230). A cylinder connecting plate (232) is adjustablely connected to the side of the vertical moving guide rail (230), and a robotic arm chuck (240) for gripping and placing the detection shaft is fixedly connected to the bottom of the cylinder connecting plate (232).

2. The high-precision shaft outer diameter testing device according to claim 1, characterized in that, The U-shaped middle protrusion of the shaft fixing seat (120) forms a roller seat (125). The top middle section of the roller seat (125) has a groove, in which a set of shaft rollers (126) are symmetrically arranged with the shaft to be tested as the axis. The inner sidewalls of the two ends of the U-shape of the shaft fixing seat (120) can be provided with corresponding sets of shaft rollers (126) in the same way as the roller seat (125). The two sets of shaft rollers (126) cooperate to facilitate multiple tests after the shaft to be tested is rolled and adjusted.

3. The high-precision shaft outer diameter testing device according to claim 1, characterized in that, The micrometer (130) has a remote sensing signal (132) connected and installed at the top of the micrometer mounting base (131) for receiving instructions and sending detection data.

4. The high-precision shaft outer diameter testing device according to claim 1, characterized in that, The micrometer (130) and micrometer mounting base (131) are provided with two or more sets at the middle section of the shaft moving guide rail (110). The outer diameter detection data of the shaft to be tested should be obtained by integrating multiple sets of data to obtain a high-precision reading. On the other hand, it can facilitate timely detection and troubleshooting when a certain micrometer (130) malfunctions.

5. The high-precision shaft outer diameter testing device according to claim 1, characterized in that, The horizontal moving guide rail (210) of the material dispensing robot (200) is fixedly connected to the mounting platform frame of the robot mounting frame (400). The front and rear moving guide rails (220) are slidably mounted on the horizontal moving guide rails (210) via a motor moving plate (211). The vertical moving guide rail (230) is slidably mounted on the front and rear moving guide rails (220) via a cylinder moving plate (222).

6. The high-precision shaft outer diameter testing device according to claim 5, characterized in that, The motor moving plate (211) and cylinder moving plate (222) of the material dispensing robot (200) are controlled and adjusted by the angle motor (221) on the horizontal moving guide rail (210) and the front and rear moving guide rail (220), respectively. The cylinder connecting plate (232) is controlled and adjusted vertically by the hydraulic cylinder (231) at the top of the vertical moving guide rail (230).

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