Cone operating device and inspection device

Abstract

To provide a conic motion device that can perform conic motion and horizontal motion, and an inspection device.SOLUTION: A conic motion device comprises: a pedestal part; a first member rotatable about a first rotation axis with respect to the pedestal part; a second member connected to the first member, rotatable at the connection part about a second rotation axis perpendicular to the first rotation axis, and capable of holding an inspected object; a motor arranged on the pedestal part and having an output shaft; a first disc part rotating together with the output shaft when rotation of the output shaft is in one direction and idling away from the output shaft when rotation of the output shaft is in the other direction; a second disc part rotating together with the output shaft when rotation of the output shaft is in the other direction and idling away from the output shaft when rotation of the output shaft is in the one direction; and a slider mechanism connected to the second member, arranged to rotate together with the first disc part, and moving the second member radially with respect to the first disc part by rotation of the second disc part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cone action device and an inspection device. [Background technology]

[0002] Patent Document 1 describes a ceiling swivel fan that uses a gimbal mechanism with one motor as a simple mechanism for conical movement. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-237199 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, piston crown surface inspection involves a process in which the piston is placed in a horizontal position during inspection. When attempting to apply the technology of the ceiling gyroscope fan using the gimbal mechanism described in Patent Document 1 to piston crown surface inspection, there was a problem in that the object to be inspected could not be moved to a horizontal position. SUMMARY OF THE INVENTION It is an object of the present invention to provide a cone movement device and an inspection device that are capable of cone movement and horizontal movement. [Means for solving the problem]

[0005] In one embodiment of the present invention, the cone motion device comprises a base portion, a first member rotatable around a first rotation axis relative to the base portion, a second member connected to the first member and rotatable around a second rotation axis perpendicular to the first rotation axis at the connection portion, and capable of holding an object to be inspected, a motor arranged on the base portion and having an output shaft, a first circular plate portion that rotates integrally with the output shaft when the output shaft rotates in one direction and rotates freely relative to the output shaft when the output shaft rotates in the other direction, a second circular plate portion that rotates integrally with the output shaft when the output shaft rotates in the other direction and rotates freely relative to the output shaft when the output shaft rotates in one direction, and a slider mechanism connected to the second member and arranged to rotate together with the first circular plate portion, and which moves the second member radially relative to the first circular plate portion as the second circular plate portion rotates. [Effects of the Invention]

[0006] Therefore, the present invention can provide a conical movement device and an inspection device that are capable of conical movement and horizontal movement. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is an overall view of an inspection device having a cone action device according to a first embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the cone action device of the first embodiment. [Figure 3] FIG. 2 is an enlarged view of the vicinity of the slider mechanism according to the first embodiment. [Figure 4] FIG. 2 is a view showing a single guide plate according to the first embodiment. [Figure 5] 10 is an explanatory view of the operation of a one-way clutch provided between the guide plate and the output shaft of the motor in the first embodiment. [Figure 6] 5 is an explanatory diagram of the operation of a one-way clutch provided between the rotary table and the output shaft of the motor in the first embodiment. FIG. [Figure 7] 1 is a diagram showing step 1 of a time chart showing the flow of operation of the cone action device of the first embodiment. FIG. [Figure 8] 1 is a diagram showing step 2-1 of a time chart showing the flow of operation of the cone action device of the first embodiment. FIG. [Figure 9] 10 is a diagram showing step 2-2 of the time chart showing the flow of operation of the cone action device of the first embodiment. FIG. [Figure 10] 10 is a diagram showing step 2-3 of the time chart showing the flow of operation of the cone action device of the first embodiment. FIG. [Figure 11] 10 is a diagram showing step 3 of the time chart showing the flow of operation of the cone action device of the first embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] [Embodiment 1] FIG. 1 is an overall view of an inspection device having a cone action device of embodiment 1, FIG. 2 is an exploded oblique view of the cone action device of embodiment 1, FIG. 3 is an enlarged view of the vicinity of the slider mechanism of embodiment 1, and FIG. 4 is a single-item view of the guide plate of embodiment 1.

[0009] (Configuration of inspection equipment) The inspection device K includes a camera B, a cone operating device 1 and a computer C. The camera B captures an image of the top surface W1 of the piston (inspection object) W. The cone motion device 1 changes the attitude of the piston W relative to the camera B. The computer C is, for example, a personal computer, and includes a memory M and a CPU A. The memory M stores the learning results obtained by machine learning using a plurality of sample images. Machine learning is, for example, learning using a neural network, and in the first embodiment, learning by deep learning is adopted. Furthermore, since learning is performed using deep learning that connects neural networks in multiple layers, the accuracy of inspection judgments can be improved compared to when using neural networks. The CPUA is equipped with an inspection unit A1 that inspects whether there are scratches or defects on the crown surface W1 of the piston W based on the image captured by the camera B and the learning results of deep learning stored in the memory M, extracts potential defect locations, and outputs a defect candidate image as the inspection result.

[0010] (Configuration of the cone action device) The cone motion device 1 includes a pedestal 3 composed of a base 3a and a first arm 3b and a second arm 3c fixed perpendicularly to both ends of the base 3a; a first member 4 in which a first arm 4a and a second arm 4b are supported by a first support portion 3b1 of the first arm 3b of the pedestal 3 and a second support portion 3c1 of the second arm 3c of the pedestal 3 and are rotatable around a first rotation axis P1; a second member 5 connected to the first member 4 by a pair of connecting portions R and rotatable around a second rotation axis P2 passing through the pair of connecting portions R and perpendicular to the first rotation axis P1 and capable of holding a piston (object to be inspected) W; a motor 2 having an output shaft 2a arranged on the base 3a of the pedestal 3; and a second one-way clutch 10 connected to the output shaft 2a of the motor 2 when the rotation of the output shaft 2a of the motor 2 is counterclockwise (one direction). the rotary table (first circular plate portion) 6, which rotates integrally with the output shaft 2a of the motor 2 and rotates freely relative to the output shaft 2a of the motor 2 when the rotation of the output shaft 2a of the motor 2 is clockwise (other direction); a guide plate (second circular plate portion) 7, which is connected to the output shaft 2a of the motor 2 via a first one-way clutch 9 and rotates integrally with the output shaft 2a of the motor 2 when the rotation of the output shaft 2a of the motor 2 is clockwise (other direction) and rotates freely relative to the output shaft 2a of the motor 2 when the rotation of the output shaft 2a of the motor 2 is counterclockwise (one direction); and a slider mechanism 8, which is connected to the second member 5 and arranged to rotate together with the rotary table 6, and which moves radially relative to the rotary table 6 along a first guide hole 6a formed radially in the rotary table 6 as the guide plate 7 rotates. This conical motion device 1 enables the piston W to perform conical motion around the conical motion center TCP where the first rotation axis P1 and the second rotation axis P2 on the crown surface W1 of the piston W intersect, as well as horizontal motion of the piston W. Furthermore, since the openings of the first member 4 and the second member 5 of the conical action device 1 are set larger than the piston W, it is possible to easily insert and remove the piston W using an automatic machine. 1 shows the initial position of the cone action device 1 with the piston W attached.

[0011] (Slider mechanism configuration) The slider mechanism 8 is composed of a slider 8a, a protrusion 8a1 protruding from the underside of the slider 8a and having a cam follower 8e, a first arm 8b having a first elongated guide hole 8b1 fixed to both side surfaces of the slider 8a, a second arm 8c having a second elongated guide hole 8c1, and a radial rotation part 8d supported movably and rotatably by the first guide hole 8b1 and the second guide hole 8c1. The first arm 8b, the second arm 8c and the radial rotation portion 8d constitute a connecting member. The radial rotation portion 8d is connected and fixed to the shaft portion 5a fixed to the second member 5. The protrusion 8a1 is movably accommodated in the first guide hole 6a formed in the rotary table 6, and the tip of the cam follower 8e is movably inserted into the annular groove portion 7b formed near the outer periphery of the guide plate 7 and having recesses 7c and 7d formed at opposing positions and recessed radially outward (see Figure 4). In the initial position shown in FIG. 1, the tip of the cam follower 8e is located in the recess 7c. In addition, a spring 11 is provided between the cam follower 8e and the pin 6b provided on the outer periphery of the rotary table 6, and the slider 8a is constantly biased radially outward and fixed at the position of the recess 7c as shown in Figure 3. As shown in FIG. 4, a hole 7a of the guide plate 7, through which the output shaft 2a of the motor 2 passes, is provided eccentrically from a center point C of the guide plate 7, and the guide plate 7 is an eccentric circular plate.

[0012] FIG. 5 is an explanatory diagram of the operation of the one-way clutch provided between the guide plate and the output shaft of the motor in the first embodiment, and FIG. 6 is an explanatory diagram of the operation of the one-way clutch provided between the rotary table and the output shaft of the motor in the first embodiment.

[0013] A second one-way clutch 10 is provided between the rotary table 6 and the output shaft 2a of the motor 2. When the output shaft 2a of the motor 2 rotates counterclockwise by +θ, the second one-way clutch 10 locks and the rotary table 6 rotates integrally with the output shaft 2a of the motor 2. When the output shaft 2a of the motor 2 rotates clockwise by -θ, the rotary table 6 rotates freely relative to the output shaft 2a of the motor 2. A first one-way clutch 9 is provided between the guide plate 7 and the output shaft 2a of the motor 2. When the output shaft 2a of the motor 2 rotates clockwise by -θ, the first one-way clutch 9 locks and the guide plate 7 rotates integrally with the output shaft 2a of the motor 2. When the output shaft 2a of the motor 2 rotates counterclockwise by +θ, the guide plate 7 rotates freely relative to the output shaft 2a of the motor 2.

[0014] FIG. 7 is a diagram showing step 1 of a time chart showing the flow of operation of the conical action device of embodiment 1, FIG. 8 is a diagram showing step 2-1 of a time chart showing the flow of operation of the conical action device of embodiment 1, FIG. 9 is a diagram showing step 2-2 of a time chart showing the flow of operation of the conical action device of embodiment 1, FIG. 10 is a diagram showing step 2-3 of a time chart showing the flow of operation of the conical action device of embodiment 1, and FIG. 11 is a diagram showing step 3 of a time chart showing the flow of operation of the conical action device of embodiment 1.

[0015] (Cone operating device operation) Step 1 shown in FIG. 7 indicates an operating position in which the output shaft 2a of the motor 2 is rotated 180° clockwise from the initial position shown in FIG. At this time, the guide plate 7 rotates integrally with the output shaft 2 a of the motor 2 , and the rotary table 6 rotates idly relative to the output shaft 2 a of the motor 2 . The slider mechanism 8 moves along the first guide hole 6a formed in the rotary table 6 (in the direction of arrow A), and the radial rotation portion 8d moves, rotates, and tilts through the first guide hole 8b1 and the second guide hole 8c1, causing the piston W, the first member 4, and the second member 5 to tilt around the first rotation axis P1. At this time, the tip of the cam follower 8e is constantly biased radially outward by the spring 11 and fixed at the position of the recess 7d. By preparing several types of guide plates 7, the inclination angles of the piston W, the first member 4, and the second member 5 about the first rotation axis P1 can be easily changed.

[0016] Thereafter, the output shaft 2a of the motor 2 is rotated counterclockwise continuously by 360°. At this time, the rotary table 6 rotates integrally with the output shaft 2a of the motor 2, and the guide plate 7 is pressed against the cam follower 8e of the slider mechanism 8, so it rotates counterclockwise together with the rotary table 6 although it rotates freely relative to the output shaft 2a of the motor 2. Step 2-1 shown in Figure 8 indicates an operating position where the output shaft 2a of the motor 2 has rotated +60° counterclockwise, step 2-2 shown in Figure 9 indicates an operating position where the output shaft 2a of the motor 2 has rotated +300° counterclockwise, and step 2-3 shown in Figure 10 indicates an operating position where the output shaft 2a of the motor 2 has rotated +360° counterclockwise. That is, the operating position in FIG. 10 returns to the operating position shown in FIG. This causes the piston W to move in a conical motion around the piston conical motion center TCP, and during the conical motion, the camera B can continuously capture images of the crown surface W1 of the piston W from multiple angles. In this way, a conical movement device and an inspection device capable of conical movement and horizontal movement can be provided, so that the crown surface W1 of the piston W can be inspected.

[0017] Step 3 shown in FIG. 11 indicates an operating position obtained by rotating the output shaft 2a of the motor 2 clockwise by 180° from the operating position shown in FIG. At this time, the guide plate 7 rotates integrally with the output shaft 2 a of the motor 2 , and the rotary table 6 rotates idly relative to the output shaft 2 a of the motor 2 . Then, the slider mechanism 8 moves along the first guide hole 6a formed in the rotary table 6 (in the direction of arrow B), and the radial rotation portion 8d moves and rotates through the first guide hole 8b1 and the second guide hole 8c1, thereby eliminating the tilt, and the piston W, the first member 4, and the second member 5 are no longer tilted around the first rotation axis P1, and return to the initial position similar to that shown in Figure 1.

[0018] Next, the effects of the first embodiment will be described.

[0019] (1) The cone motion device 1 includes a base 3a and a pedestal 3 composed of a first arm 3b and a second arm 3c fixed perpendicularly to both ends of the base 3a; a first member 4 in which a first arm 4a and a second arm 4b are supported by a first support portion 3b1 of the first arm 3b of the pedestal 3 and a second support portion 3c1 of the second arm 3c of the pedestal 3 and are rotatable around a first rotation axis P1; a second member 5 connected to the first member 4 by a pair of connecting portions R and rotatable around a second rotation axis P2 perpendicular to the first rotation axis P1 through the pair of connecting portions R and capable of holding a piston (object to be inspected) W; a motor 2 having an output shaft 2a disposed on the base 3a of the pedestal 3; and a second one-way clutch 10 connected to the output shaft 2a of the motor 2 when the rotation of the output shaft 2a of the motor 2 is counterclockwise (one direction). The rotary table (first circular plate portion) 6 rotates integrally with the shaft 2a and rotates freely relative to the output shaft 2a of the motor 2 when the rotation of the output shaft 2a of the motor 2 is clockwise (other direction); a guide plate (second circular plate portion) 7 which is connected to the output shaft 2a of the motor 2 via a first one-way clutch 9 and rotates integrally with the output shaft 2a of the motor 2 when the rotation of the output shaft 2a of the motor 2 is clockwise (other direction) and rotates freely relative to the output shaft 2a of the motor 2 when the rotation of the output shaft 2a of the motor 2 is counterclockwise (one direction); and a slider mechanism 8 which is connected to the second member 5 and arranged to rotate together with the rotary table 6, and which moves radially relative to the rotary table 6 along a first guide hole 6a formed radially in the rotary table 6 as the guide plate 7 rotates. Therefore, a conical motion device and an inspection device capable of conical motion and horizontal motion can be provided, making it possible to inspect the crown surface W1 of the piston W.

[0020] (2) Several types of guide plates 7 are prepared to change the inclination angles of the piston W, the first member 4, and the second member 5 around the first rotation axis P1. Therefore, the tilt angles of the piston W, the first member 4, and the second member 5 about the first rotation axis P1 can be easily changed.

[0021] (3) The openings of the first member 4 and the second member 5 of the conical action device 1 are set to be larger than the piston W. Therefore, it is possible to easily insert and remove the piston W using an automatic machine.

[0022] Other Embodiments The above describes an embodiment for carrying out the present invention, but the specific configuration of the present invention is not limited to the configuration of the embodiment, and design changes and the like that do not deviate from the gist of the invention are also included in the present invention. The object to be inspected is not limited to a piston, and the learning results are not limited to neural networks or deep learning, but can be any machine learning results. [Explanation of symbols]

[0023] 1 conical motion device, 2 motor, 2a motor output shaft, 3 base portion, 4 first member, 5 second member, 6 rotary table (first disc portion), 6a first guide hole, 7 guide plate (second disc portion), 7b annular groove portion, 7c recessed portion, 7d recessed portion, 8 slider mechanism, 8b first arm (connecting member), 8c second arm (connecting member), 8d radial rotation portion (connecting member), 8e cam follower, 9 first one-way clutch, 10 second one-way clutch, 11 spring, A CPU, A1 inspection unit, B camera, P1 first rotating shaft, P2 second rotating shaft, W piston (inspected object)

Claims

1. A base portion and a first member rotatable about a first rotation axis relative to the base; a second member connected to the first member by a connecting portion, rotatable at the connecting portion about a second rotation axis perpendicular to the first rotation axis, and capable of holding an object to be inspected; a motor disposed on the base and having an output shaft; a first disk portion that rotates integrally with the output shaft when the output shaft rotates in one direction and rotates idly relative to the output shaft when the output shaft rotates in the other direction; a second disk portion that rotates integrally with the output shaft when the output shaft rotates in the other direction and that rotates idly relative to the output shaft when the output shaft rotates in one direction; a slider mechanism coupled to the second member and arranged to rotate together with the first disk portion, the slider mechanism moving the second member in a radial direction relative to the first disk portion as the second disk portion rotates; A cone action device having:

2. 2. The cone action device of claim 1, the first disk portion has a first one-way clutch that rotates integrally with the output shaft when the output shaft rotates in one direction and rotates freely relative to the output shaft when the output shaft rotates in the other direction, the second disk portion has a second one-way clutch that rotates integrally with the output shaft when the output shaft rotates in the other direction, and that rotates freely relative to the output shaft when the output shaft rotates in one direction. A cone action device characterized by:

3. 2. The cone action device of claim 1, The first circular plate portion has a first guide hole extending in a radial direction, the slider mechanism has a connecting member that moves along the first guide hole and is connected to the second member; A cone action device characterized by:

4. 4. The cone action device of claim 3, The connecting member has a radial rotation portion that is rotatable in a radial direction of the first disk portion, and the radial rotation portion and the second member are fixed to each other. A cone action device characterized by:

5. 2. The cone action device of claim 1, The second disk portion is an eccentric disk that is eccentric with respect to the rotation axis of the output shaft, The eccentric disk has an annular groove near its outer periphery, the slider mechanism has a cam follower inserted into the annular groove; A cone action device characterized by:

6. 6. The cone action device of claim 5, The annular groove portion has a recessed portion recessed radially outward in a part thereof, The slider mechanism has a spring that biases the cam follower radially outward. A cone action device characterized by:

7. 2. The inspection device using the cone action device according to claim 1, a camera for capturing an image of the object to be inspected; The object to be inspected is caused to move in a conical motion, and images are taken from a plurality of angles by the camera, and inspection is performed based on the images from the plurality of angles. An inspection device characterized by:

Images