Visual detection device for levelness of end face of part and detection method thereof

Abstract

The invention relates to the field of part end face levelness visual detection, in particular to a part end face levelness visual detection device which comprises a machine body, a rotary table assembly is arranged at the top in the machine body, limiting clamping assemblies are symmetrically arranged on the two sides of the top of the rotary table assembly, and the limiting clamping assemblies are driven by second electric telescopic rods. A first laser flatness measuring instrument body is horizontally arranged at the position, located on one side of the rotary table assembly, of the top in the machine body through a support. According to the invention, the two groups of limiting clamping assemblies are symmetrically distributed and are matched with the arrangement of the rotary table assembly, so that two groups of parts can be alternately measured, the levelness of the two end faces and the side walls of the parts can be measured, when one group of parts is measured, the other group of parts can be turned over and subjected to surface conversion treatment at the same time, meanwhile, the waiting time is shortened, and multi-dimensional levelness detection can be performed on the parts.

Description

Technical Field

[0001] The present invention relates to the technical field of visual inspection of the flatness of part end faces, and particularly relates to a visual inspection device for the flatness of part end faces and a detection method thereof. Background Art

[0002] A visual inspection device for the flatness of part end faces usually relies on machine vision technology. It captures images of part end faces through a high-resolution camera and uses image processing algorithms to analyze the flatness or levelness of the end faces.

[0003] When some existing visual inspection devices for the flatness of part end faces detect the flatness of parts, most of them can only achieve single-dimensional detection, and the detection dimension is limited. When it is necessary to detect another dimension, it is necessary to manually turn over and clamp the part before detecting the other dimension, and the operation is rather cumbersome. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the prior art, and to propose a visual inspection device for the flatness of part end faces and a detection method thereof.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A visual inspection device for the flatness of part end faces includes a machine body. A turntable assembly is arranged at the top inside the machine body. Limiting and clamping assemblies are symmetrically arranged on both sides of the top of the turntable assembly, and the limiting and clamping assemblies are driven by a second electric telescopic rod. A first laser flatness measuring instrument body is horizontally arranged on one side of the turntable assembly at the top inside the machine body through a bracket, and a second laser flatness measuring instrument body is horizontally arranged on one side of the first laser flatness measuring instrument body at the top inside the machine body through a bracket. The limiting and clamping assembly includes a fixed seat. A support seat is fixedly installed on one side of the top of the fixed seat. A clamping assembly is slidably arranged on one side of the support seat, and the clamping assembly is driven by a first electric telescopic rod; The clamping assembly includes a limiting slider. A first driving motor is arranged inside the limiting slider. The output end of the first driving motor is sequentially connected with a rotating shaft and a limiting seat. A fixed block is fixedly installed on one side of one end of the limiting seat. A screw rod driving assembly is arranged inside the limiting seat on the side of the fixed block, and a movable plate is arranged at one end of the limiting seat through the screw rod driving assembly; Adjacent surfaces of the movable plate and the fixed block are both connected with clamping blocks through rotating shafts, and a detachable clamping surface body is screwed on the clamping surfaces of the clamping blocks. The rotating shaft on one side of the fixed block is driven by a second driving motor.

[0006] Preferably, a fixed ring is installed on one side of the clamping surface body. An external thread portion is arranged on the outer wall of the fixed ring. A groove is formed in the clamping surface of the clamping block at the position of the fixed ring. An internal thread portion is arranged in the groove at the position of the external thread portion, and the internal thread portion is in threaded connection with the external thread portion.

[0007] Preferably, a chute is provided in the support base at the position of the limit slider, and a first electric telescopic rod is arranged at the top of the support base. The output end of the first electric telescopic rod is vertically downward, and the output end of the first electric telescopic rod is connected to the limit slider.

[0008] Preferably, the thickness of the movable plate is the same as that of the fixed block; A second driving motor is installed on one side of the fixed block, and the second driving motor is placed in the auxiliary frame. The output end of the second driving motor is connected to the adjacent rotating shaft.

[0009] Preferably, a support frame is installed at the bottom of the fixed seat at the position of the limit clamping assembly. A second electric telescopic rod is arranged in the support frame. The top extension end of the second electric telescopic rod is vertically upward and connected to the fixed seat. Auxiliary grooves are provided at the top of the fixed seat at the positions of the support base and the auxiliary frame.

[0010] A detection method for a horizontal visual detection device for the end face of a part includes the following steps: S1: Place the two parts to be detected, part one and part two, respectively on the top of the clamping surface body on one side of the fixed block of the two groups of limit clamping assemblies, and control the turntable assembly to rotate the limit clamping assembly until the limit clamping assembly with part one placed on it is aligned with the laser flatness measuring instrument body one. Measure the flatness of part one through the laser flatness measuring instrument body two; S2: Control the turntable assembly to continue rotating the limit clamping assembly. During the rotation, the limit clamping assembly of part two gradually moves to one side of the laser flatness measuring instrument body one, and measure the flatness of part two through the laser flatness measuring instrument body two; S3: During the rotation, the limit clamping assembly of part one gradually moves to one side away from the laser flatness measuring instrument body one, and control the lead screw drive assembly to drive the movable plate to move towards the part until the clamping surface body on one side of the movable plate fits with part one. The first electric telescopic rod controls the corresponding clamping assembly to move away from the fixed seat side, and then control the first driving motor to drive the clamped part one to be turned over by 180°, so that the movable plate is close to the fixed seat side, and control the lead screw drive assembly to drive the movable plate away from the fixed block, and control the corresponding clamping assembly to move towards the fixed seat side, and make one side of the movable plate fit with the top of the fixed seat; S4: Control the turntable assembly to continue rotating, move part one towards the laser flatness measuring instrument body two, and measure the flatness of the turned-over part one through the laser flatness measuring instrument body two, while the limit clamping assembly of part two performs a 180° turning process on part two; S5: Control the turntable assembly to continue rotating, move the second part towards the second laser flatness measuring instrument body, and measure the levelness of the second part after turning it over through the second laser flatness measuring instrument body. Also, the limit clamping assembly of the second part controls the lead screw drive assembly to drive the movable plate to move towards the part until the clamping surface body on one side of the movable plate fits against the first part. The first electric telescopic rod controls the corresponding clamping assembly to move away from the fixed seat, and then controls the first drive motor to drive the clamped first part to rotate by 90°, and rotates the clamped first part through the second drive motor; S6: Control the turntable assembly to continue rotating, move the first part towards the first laser flatness measuring instrument body, and measure the levelness of the outer wall of the first part through the first laser flatness measuring instrument body, while the limit clamping assembly of the second part performs a 90° flipping process on the second part; S7: Control the turntable assembly to continue rotating to move the second part towards the first laser flatness measuring instrument body, and measure the levelness of the outer wall of the first part through the first laser flatness measuring instrument body.

[0011] Preferably, in S5, after the first part is rotated by 90°, control the second electric telescopic rod to adjust the height of the fixed seat so that the first part and the first laser flatness measuring instrument body are at the same height.

[0012] Preferably, in S6, after the second part is rotated by 90°, control the second electric telescopic rod to adjust the height of the fixed seat so that the second part and the first laser flatness measuring instrument body are at the same height.

[0013] The beneficial effects of the present invention are: In the present invention, the two groups of limit clamping assemblies are symmetrically distributed, and in combination with the setting of the turntable assembly, the two groups of parts can be alternately measured, and the levelness of their two end faces and side walls can be measured. When measuring one group of parts, the other group can simultaneously perform the turning and surface-changing process, reducing the waiting time at the same time, and the multi-dimensional levelness detection of the parts can be carried out. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of a device for visually detecting the levelness of a part end face proposed by the present invention; Figure 2 is Figure 1 an enlarged structural diagram at A in Figure 3 is a schematic cross-sectional structural diagram of the turntable assembly and the limit clamping assembly; Figure 4 is a schematic exploded cross-sectional structural diagram of the limit clamping assembly; Figure 5 is a schematic cross-sectional structural diagram of a partial explosion of the limit clamping assembly.

[0015] In the figure: 1, the body; 2, the turntable assembly; 3, the first laser flatness measuring instrument body; 4, the limit clamping assembly; 41, the fixed seat; 42, the support seat; 43, the limit seat; 44, the clamping block; 45, the clamping surface body; 46, the first electric telescopic rod; 47, the movable plate; 5, the second electric telescopic rod; 7, the screw drive assembly; 8, the first drive motor; 9, the second drive motor; 10, the second laser flatness measuring instrument body. Specific implementation mode

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0017] Refer to Figures 1-5 , a vision inspection device for the flatness of a part end face, including a body 1. A turntable assembly 2 is provided at the top inside the body 1. Limit clamping assemblies 4 are symmetrically arranged on both sides of the top of the turntable assembly 2, and the limit clamping assemblies 4 are driven by a second electric telescopic rod 5. A first laser flatness measuring instrument body 3 is horizontally arranged on one side of the turntable assembly 2 at the top inside the body 1 through a bracket, and a second laser flatness measuring instrument body 10 is horizontally arranged on one side of the first laser flatness measuring instrument body 3 at the top inside the body 1 through a bracket. The limit clamping assembly 4 includes a fixed seat 41. A support seat 42 is fixedly installed on one side of the top of the fixed seat 41. A clamping assembly is slidably arranged on one side of the support seat 2, and the clamping assembly is driven by a first electric telescopic rod 46; At the same time, the clamping assembly includes a limit slider. A first drive motor 8 is arranged inside the limit slider. The output end of the first drive motor 8 is sequentially connected with a rotating shaft and a limit seat 43. A fixed block is fixedly installed on one side of one end of the limit seat 43. A screw drive assembly 7 is arranged inside the limit seat 43 on the side of the fixed block, and a movable plate 47 is arranged at one end of the limit seat 43 through the screw drive assembly 7; At the same time, the adjacent surfaces of the movable plate 47 and the fixed block are both connected with a clamping block 44 through a rotating shaft, and a detachable clamping surface body 45 is screwed on the clamping surface of the clamping block 44, and the rotating shaft on the side of the fixed block is driven by a second drive motor 9.

[0018] And, a fixing ring is installed on one side of the clamping surface body 45. An external thread part is arranged on the outer wall of the fixing ring. A groove is formed in the clamping surface of the clamping block 44 at the position of the fixing ring. An internal thread part is arranged in the groove at the position of the external thread part, and the internal thread part is threadedly connected with the external thread part.

[0019] And, a chute is formed in the support seat 42 at the position of the limit slider, and a first electric telescopic rod 46 is arranged on the top of the support seat 42. The output end of the first electric telescopic rod 46 is vertically downward, and the output end of the first electric telescopic rod 46 is connected with the limit slider.

[0020] Further, the thickness of the movable plate 47 is consistent with the thickness of the fixed block; an auxiliary frame is installed on one side of the fixed block, and a second driving motor 9 is placed in the auxiliary frame. The output end of the second driving motor 9 is connected to the adjacent rotating shaft.

[0021] Meanwhile, a support frame is installed at the bottom of the fixed seat 41 at the position of the limit clamping assembly 4. A second electric telescopic rod 5 is arranged in the support frame. The top extension end of the second electric telescopic rod 5 is vertically upward and connected to the fixed seat 41. Auxiliary grooves are opened at the top of the fixed seat 41 at the positions of the support seat 42 and the auxiliary frame.

[0022] A detection method for a horizontal visual detection device of a part end face includes the following steps: S1: Place the two parts to be detected, part one and part two, on the top of the clamping surface body 45 on one side of the fixed block of the two groups of limit clamping assemblies 4 respectively, and control the turntable assembly 2 to rotate the limit clamping assembly 4 until the limit clamping assembly 4 with part one placed on it is aligned with the laser flatness measuring instrument body one 3. Measure the flatness of part one through the laser flatness measuring instrument body two 10. S2: Control the turntable assembly 2 to continue rotating the limit clamping assembly 4. During the rotation, the limit clamping assembly 4 of part two gradually moves to one side of the laser flatness measuring instrument body one 3, and measure the flatness of part two through the laser flatness measuring instrument body two 10. S3: During the rotation, the limit clamping assembly 4 of part one gradually moves to one side away from the laser flatness measuring instrument body one 3, and control the lead screw drive assembly 7 to drive the movable plate 47 to move towards the part until the clamping surface body 45 on one side of the movable plate 47 is attached to part one. The first electric telescopic rod 46 controls the corresponding clamping assembly to move away from the fixed seat 41. Then control the first driving motor 8 to drive the clamped part one to perform a 180° flip, so that the movable plate 47 is close to the fixed seat 41. Control the lead screw drive assembly 7 to drive the movable plate 47 away from the fixed block, and control the corresponding clamping assembly to move towards the fixed seat 41, and make one side of the movable plate 47 fit with the top of the fixed seat 41. S4: Control the turntable assembly 2 to continue rotating, so that part one moves towards the laser flatness measuring instrument body two 10, and measure the flatness of the turned-over part one through the laser flatness measuring instrument body two 10, while the limit clamping assembly 4 of part two performs a 180° flip process on part two. S5: Control the turntable assembly 2 to continue rotating, move the second part towards the second laser flatness measuring instrument body 10, and measure the levelness of the second part after being turned over through the second laser flatness measuring instrument body 10. And the limit clamping assembly 4 of the second part controls the lead screw drive assembly 7 to drive the movable plate 47 to move towards the part until the clamping surface body 45 on one side of the movable plate 47 fits against the first part. The first electric telescopic rod 46 controls the corresponding clamping assembly to move away from the fixed seat 41, and then controls the first drive motor 8 to drive the clamped first part to be flipped by 90°, and rotates the clamped first part through the second drive motor 9; S6: Control the turntable assembly 2 to continue rotating, move the first part towards the first laser flatness measuring instrument body 3, and measure the levelness of the outer wall of the first part through the first laser flatness measuring instrument body 3, while the limit clamping assembly 4 of the second part performs a 90° flipping process on the second part; S7: Control the turntable assembly 2 to continue rotating to move the second part towards the first laser flatness measuring instrument body 3, and measure the levelness of the outer wall of the first part through the first laser flatness measuring instrument body 3.

[0023] Meanwhile, in S5, after the first part is flipped by 90°, control the second electric telescopic rod 5 to adjust the height of the fixed seat 41 so that the first part and the first laser flatness measuring instrument body are at the same height.

[0024] Meanwhile, in S6, after the second part is flipped by 90°, control the second electric telescopic rod 5 to adjust the height of the fixed seat 41 so that the second part and the first laser flatness measuring instrument body are at the same height.

[0025] It should be noted that the specific structures and working principles of the turntable assembly 2, the lead screw drive assembly 7, the first electric telescopic rod 46, the second electric telescopic rod 5, the first laser flatness measuring instrument body 3, the second laser flatness measuring instrument body 10, as well as the first drive motor 8 and the second drive motor 9 are all existing technologies publicly available on the market at present, and do not belong to the main technical problems to be solved in the present invention. Therefore, they are not elaborated in the present invention.

[0026] In the present invention, the two limit clamping assemblies (4) are symmetrically distributed, and in cooperation with the setting of the turntable assembly, the two groups of parts can be alternately measured, and the levelness of their two end faces and side walls can be measured. When measuring one group of parts, the other group can simultaneously perform the process of turning over and changing the surface, reducing the waiting time at the same time, and enabling multi-dimensional levelness detection of the parts.

[0027] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A visual inspection device for the flatness of a part end face, comprising a machine body (1), characterized in that, A turntable assembly (2) is provided at the top inside the machine body (1). On both sides of the top of the turntable assembly (2), limit clamping assemblies (4) are symmetrically arranged. The limit clamping assemblies (4) are driven by second electric telescopic rods (5). A first laser flatness measuring instrument (3) is horizontally arranged on one side of the turntable assembly (2) at the top inside the machine body (1) through a bracket. A second laser flatness measuring instrument (10) is horizontally arranged on one side of the first laser flatness measuring instrument (3) at the top inside the machine body (1) through a bracket. The limit clamping assembly (4) includes a fixed seat (41). On one side of the top of the fixed seat (41), a support seat (42) is fixedly installed. A clamping assembly is slidably arranged on one side of the support seat (2). The clamping assembly is driven by a first electric telescopic rod (46). The clamping assembly includes a limit slider. A first driving motor (8) is arranged inside the limit slider. The output end of the first driving motor (8) is sequentially connected with a rotating shaft and a limit seat (43). On one side of one end of the limit seat (43), a fixed block is fixedly installed. Inside the limit seat (43) on one side of the fixed block, a screw rod driving assembly (7) is arranged. And an activity plate (47) is arranged at one end of the limit seat (43) through the screw rod driving assembly (7). On the adjacent surfaces of the activity plate (47) and the fixed block, clamping blocks (44) are connected through rotating shafts. And a detachable clamping surface body (45) is screwed on the clamping surface of the clamping block (44). And the rotating shaft on one side of the fixed block is driven by a second driving motor (9).

2. The horizontal visual inspection device for the end face of a part according to claim 1, characterized in that, A fixed ring is installed on one side of the clamping surface body (45). An external thread part is arranged on the outer wall of the fixed ring. A groove is formed in the clamping surface of the clamping block (44) at the position of the fixed ring. An internal thread part is arranged in the groove at the position of the external thread part. The internal thread part is in threaded connection with the external thread part.

3. The horizontal visual inspection device for the end face of a part according to claim 1, characterized in that, A sliding groove is formed in the support seat (42) at the position of the limit slider. And a first electric telescopic rod (46) is arranged at the top of the support seat (42). The output end of the first electric telescopic rod (46) is vertically downward. And the output end of the first electric telescopic rod (46) is connected with the limit slider.

4. The visual inspection device for the flatness of a part end face according to claim 1, wherein, The thickness of the activity plate (47) is the same as that of the fixed block. An auxiliary frame is installed on one side of the fixed block. A second driving motor (9) is placed inside the auxiliary frame. The output end of the second driving motor (9) is connected with the adjacent rotating shaft.

5. The horizontal visual inspection device for the end face of a part according to claim 1, characterized in that A support frame is installed at the bottom of the fixed seat (41) at the position of the limit clamping assembly (4). A second electric telescopic rod (5) is arranged inside the support frame. The top extension end of the second electric telescopic rod (5) is vertically upward and connected with the fixed seat (41). And auxiliary grooves are formed at the top of the fixed seat (41) at the positions of the support seat (42) and the auxiliary frame.

6. A detection method for a vision detection device of the flatness of a part end face, characterized in that, It includes the following steps: S1: Place the two parts to be detected, part one and part two, respectively on the tops of the clamping surface bodies (45) on one side of the fixed blocks of the two groups of limit clamping assemblies (4). Control the turntable assembly (2) to rotate the limit clamping assemblies (4) until the limit clamping assembly (4) where part one is placed is aligned with the first laser flatness measuring instrument (3). Measure the flatness of part one through the second laser flatness measuring instrument (10). S2: Control the turntable assembly (2) to continue rotating the limit clamping assembly (4). During the rotation, the limit clamping assembly (4) of the second part gradually moves towards one side of the laser flatness measuring instrument body one (3), and the flatness of the second part is measured by the laser flatness measuring instrument body two (10). S3: During the rotation, the limit clamping assembly (4) of the first part gradually moves towards the side away from the laser flatness measuring instrument body one (3), and control the screw drive assembly (7) to drive the movable plate (47) to move towards the part until the clamping surface body (45) on one side of the movable plate (47) fits with the first part. The first electric telescopic rod (46) controls the corresponding clamping assembly to move away from the fixed seat (41) side, and then control the first drive motor (8) to drive the clamped first part to perform a 180° flip, so that the movable plate (47) is close to the fixed seat (41) side, and control the screw drive assembly (7) to drive the movable plate (47) away from the fixed block, and control the corresponding clamping assembly to move towards the fixed seat (41) side, and make one side of the movable plate (47) fit with the top of the fixed seat (41). S4: Control the turntable assembly (2) to continue rotating, so that the first part moves towards the laser flatness measuring instrument body two (10), and the flatness of the turned-over first part is measured by the laser flatness measuring instrument body two (10), while the limit clamping assembly (4) of the second part performs a 180° flip process on the second part. S5: Control the turntable assembly (2) to continue rotating, so that the second part moves towards the laser flatness measuring instrument body two (10), and the flatness of the turned-over second part is measured by the laser flatness measuring instrument body two (10), and the limit clamping assembly (4) of the second part controls the screw drive assembly (7) to drive the movable plate (47) to move towards the part until the clamping surface body (45) on one side of the movable plate (47) fits with the first part. The first electric telescopic rod (46) controls the corresponding clamping assembly to move away from the fixed seat (41) side, and then control the first drive motor (8) to drive the clamped first part to perform a 90° flip, and rotate the clamped first part through the second drive motor (9). S6: Control the turntable assembly (2) to continue rotating, so that the first part moves towards the laser flatness measuring instrument body one (3), and the flatness of the outer wall of the first part is measured by the laser flatness measuring instrument body one (3), while the limit clamping assembly (4) of the second part performs a 90° flip process on the second part. S7: Control the turntable assembly (2) to continue rotating so that the second part moves towards the laser flatness measuring instrument body one (3), and the flatness of the outer wall of the first part is measured by the laser flatness measuring instrument body one (3).

7. The detection method of a horizontal visual detection device for the end face of a part according to claim 6, characterized in that, In the above S5, after the first part is flipped by 90°, control the second electric telescopic rod (5) to adjust the height of the fixed seat (41) so that the first part and the laser flatness measuring instrument body one are at the same height.

8. The detection method of a visual detection device for the flatness of a part end face according to claim 6, characterized in that, In S6, after the second part is flipped by 90°, the second electric telescopic rod (5) is controlled to adjust the height of the fixed seat (41) so that the second part and the first laser flatness measuring instrument body are at the same height.

Images