Automatic positioning and aligning device and method for circular workpiece with hole in side wall

Abstract

The invention belongs to the technical field of workpiece positioning and calibration, and particularly relates to an automatic positioning and aligning device and method for a circular workpiece with a hole formed in the side wall, and the device comprises a base, a working platform and a supporting frame; a working platform is arranged on the base, and supporting frames are arranged on the two sides of the working platform respectively. The positioning and aligning mechanism is arranged on the base, and a positioning station and an aligning station of a circular workpiece are arranged on the working platform; the automatic positioning and aligning device solves the problems that when an existing circular workpiece is positioned and aligned, manual positioning and aligning are needed, the positioning and aligning efficiency is low, the positioning precision is low, and the needed labor and time cost is high, automatic positioning and aligning of the circular workpiece are achieved, the positioning and aligning precision and the positioning and aligning efficiency are greatly improved, and the working efficiency is improved. The labor intensity is reduced, and the time is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of workpiece positioning and calibration, and in particular relates to an automatic positioning and alignment device and method for a circular workpiece with a side wall opening. Background Art

[0002] After the circular workpiece is processed, it needs to be installed with other parts. During the installation process, the circular workpiece needs to be positioned and aligned. After the positioning and alignment are completed, the air shaft is inserted into the circular workpiece to install the air shaft.

[0003] In current corporate production, the positioning and alignment of circular workpieces with side wall holes are mostly done by manual inspection. The circular workpiece needs to be positioned and aligned manually, and the labor and time costs are high during the positioning and alignment process, resulting in low positioning accuracy, which reduces the efficiency of positioning and alignment and is time-consuming and labor-intensive.

[0004] Therefore, the present invention provides a device and method for automatically positioning and aligning a circular workpiece with a side wall opening. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing circular workpiece needs to be positioned and aligned manually, the positioning efficiency is low, the positioning accuracy is low, and the labor and time costs are high. The present invention realizes the automatic positioning and alignment of the circular workpiece, greatly improves the positioning accuracy and efficiency, reduces labor intensity and saves time.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A device for automatically positioning and aligning a circular workpiece with a hole in a side wall, comprising: a base, a working platform and a support frame; the base is provided with a working platform, and support frames are provided on both sides of the working platform; it also includes: a positioning and alignment mechanism, the positioning and alignment mechanism is arranged on the base, and the working platform is provided with a positioning station and an alignment station for the circular workpiece; the circular workpiece enters the positioning station and is clamped and positioned by the positioning and alignment mechanism, the circular workpiece is driven to translate to the alignment station by the positioning and alignment mechanism, and the hole on the circumferential wall side of the circular workpiece is aligned.

[0007] Preferably, the positioning and alignment mechanism comprises: a support plate, a horizontal guide rail, a clamping frame, a first cylinder, a clamping claw, a second cylinder, a third cylinder, a fourth cylinder and a motor; the support plate is arranged on a working platform, a horizontal guide rail is arranged on the side of the support plate, a clamping frame is slidably arranged on the horizontal guide rail, a first cylinder is arranged on the top of the clamping frame, and a clamping claw is arranged on the bottom of the clamping frame; The support frame is horizontally provided with a second cylinder and a fourth cylinder, the output end of the second cylinder is connected to the clamping frame, the output end of the fourth cylinder is provided with a positioning pin, and the diameter of the positioning pin is smaller than the diameter of the opening of the side wall of the circular workpiece; A third cylinder and a motor are respectively vertically arranged on the base, and the third cylinder and the motor are respectively located below the working platform, and the output ends of the third cylinder and the motor both pass through the working platform.

[0008] Preferably, the clamping frame includes: a first L-shaped plate and a second L-shaped plate, the vertical surfaces of the first L-shaped plate and the second L-shaped plate are arranged opposite to each other, the second L-shaped plate slides in the vertical direction of the first L-shaped plate, the first L-shaped plate is inverted on the horizontal guide rail, the top of the first L-shaped plate is connected to the first cylinder, and the output end of the first cylinder passes through the first L-shaped plate; a circular through hole is opened at the bottom of the second L-shaped plate.

[0009] Preferably, the clamping claw includes: a first fixing member, a second fixing member and a spring; the first fixing member and the second fixing member are respectively arranged at the bottom of the second L-shaped plate, and the circular through hole is located between the first fixing member and the second fixing member, and the spring is arranged inside the second L-shaped plate and connected to the first fixing member.

[0010] Preferably, a follower screw is provided at the top of the output end of the motor, and the outer diameter of the follower screw is smaller than the inner diameter of the circular workpiece.

[0011] Preferably, the alignment station on the working platform is provided with a first position sensor, and the positioning station on the working platform is provided with a second position sensor.

[0012] Preferably, the diameter of the circular through hole is larger than the diameter of the output end of the first cylinder.

[0013] A positioning and alignment method for an automatic positioning and alignment device for a circular workpiece with a side wall opening, comprising the following steps: S1: Place the circular workpiece on the positioning station on the working platform, and use the third cylinder to push the circular workpiece into the clamping claw on the clamping frame for positioning; S2: The second cylinder drives the clamping frame and the first cylinder to move horizontally as a whole to the position directly above the motor on the alignment station; S3: The first cylinder pushes the circular workpiece out of the clamping claw and drops it onto the output end of the motor, and the motor drives the circular workpiece to rotate; S4: The positioning pin on the fourth cylinder penetrates into the opening of the side wall of the circular workpiece to complete the alignment of the opening of the side wall of the circular workpiece.

[0014] Beneficial effects of the present invention: 1. The present invention respectively arranges a clamping claw, a first cylinder, a second cylinder and a third cylinder on a working platform, and the clamping claw cooperates with the first cylinder, the second cylinder and the third cylinder to clamp and fix the circular workpiece, and positions the circular workpiece. At the same time, the clamping claw can freely adjust the clamping force to be suitable for different workpiece sizes, so as to automatically position the circular workpiece, greatly improve the positioning and alignment accuracy of the circular workpiece, reduce labor intensity and save time.

[0015] 2. The present invention respectively arranges a fourth cylinder and a motor on the working platform. Through the cooperation between the fourth cylinder and the motor, the motor drives the circular workpiece to rotate during the rotation process, and the circular workpiece is quickly positioned through the positioning needle on the fourth cylinder, thereby greatly improving the efficiency of positioning and alignment. In addition, the structure is simple and the operation is stable.

[0016] 3. The present invention sets a clamping frame on the working platform, and the first L-shaped plate and the second L-shaped plate on the clamping frame cooperate with each other, so that the distance between the first L-shaped plate and the second L-shaped plate on the clamping frame can be adjusted up and down, which effectively accommodates circular workpieces of different sizes and greatly improves the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the first cylinder, the second cylinder and the third cylinder of the present invention.

[0019] Figure 3 It is a perspective view of the interior of the second L-shaped plate of the present invention.

[0020] Figure 4 Schematic diagram of the second L-shaped plate and the clamping claw of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the first cylinder, the fourth cylinder and the motor of the present invention.

[0022] Figure 6 For the present invention Figure 5 Enlarged view of point A above.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the circular workpiece of the present invention.

[0024] In the figure: 1. base; 2. working platform; 3. support frame; 4. positioning and alignment mechanism; 41. support plate; 42. horizontal guide rail; 43. clamping frame; 431. first L-shaped plate; 432. second L-shaped plate; 433. circular through hole; 44. first cylinder; 45. clamping claw; 451. first fixing member; 452. second fixing member; 453. spring; 46. second cylinder; 47. third cylinder; 48. fourth cylinder; 481. positioning pin; 49. motor; 491. follow-up screw; 5. first position sensor; 6. second position sensor; 7. circular workpiece. DETAILED DESCRIPTION

[0025] The method for using the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figures 1 to 7 As shown, an automatic positioning and alignment device for a circular workpiece with a hole in the side wall comprises: a base 1, a working platform 2 and a support frame 3; the base 1 is provided with a working platform 2, and support frames 3 are respectively provided on both sides of the working platform 2; it also comprises: a positioning and alignment mechanism 4, the positioning and alignment mechanism 4 is arranged on the base 1, and the working platform 2 is provided with a positioning station and an alignment station for a circular workpiece 7; the circular workpiece 7 enters the positioning station and is clamped and positioned by the positioning and alignment mechanism 4, and the circular workpiece 7 is driven by the positioning and alignment mechanism 4 to translate to the alignment station, and the circumferential wall side opening of the circular workpiece 7 is aligned.

[0027] like Figure 1 and Figure 2 As shown, the positioning and alignment mechanism 4 includes: a support plate 41, a horizontal guide rail 42, a clamping frame 43, a first cylinder 44, a clamping claw 45, a second cylinder 46, a third cylinder 47, a fourth cylinder 48 and a motor 49; the support plate 41 is arranged on the working platform 2, a horizontal guide rail 42 is arranged on the side of the support plate 41, a clamping frame 43 is slidably arranged on the horizontal guide rail 42, a first cylinder 44 is arranged on the top of the clamping frame 43, and a clamping claw 45 is arranged on the bottom of the clamping frame 43; The first cylinder 44 is used to push out the circular workpiece 7, and the second cylinder 46 is used to push the first cylinder 44 and the clamping frame 43 to move as a whole on the horizontal guide rail 42, and bring the circular workpiece 7 from the positioning station to the alignment station.

[0028] The support frame 3 is horizontally provided with a second cylinder 46 and a fourth cylinder 48, respectively. The output end of the second cylinder 46 is connected to the clamping frame 43. The output end of the fourth cylinder 48 is provided with a positioning pin 481, and the diameter of the positioning pin 481 is smaller than the diameter of the opening of the side wall of the circular workpiece 7. During alignment, the fourth cylinder 48 controls the extension distance through the magnetic switch. When the fourth cylinder 48 carries the positioning pin 481 to the alarm line, the positioning pin 481 is inserted into the opening on the side wall of the circular workpiece 7. Therefore, after the fourth cylinder 48 drives the positioning pin 481 to extend, if it does not just enter the opening on the side wall of the circular workpiece 7, the front end of the positioning pin 481 will hit the outer surface of the circular workpiece 7. The force on the outer surface of the circular workpiece 7 is relatively small and will not cause wear. After waiting for the motor 49 to rotate the circular workpiece 7 for the next circle, the opening on the side wall of the circular workpiece 7 will rotate to the position facing the positioning pin 481. At this time, the positioning pin 481 will enter the opening, and then the magnetic switch will alarm, and the alignment is completed.

[0029] A third cylinder 47 and a motor 49 are vertically disposed on the base 1 , respectively. The third cylinder 47 and the motor 49 are respectively located below the working platform 2 , and the output ends of the third cylinder 47 and the motor 49 both pass through the working platform 2 .

[0030] The third cylinder 47 is used for clamping and positioning the circular workpiece 7 , and the motor 49 is used for driving the circular workpiece 7 to rotate and align the circular workpiece 7 . Moreover, the motor 49 , the third cylinder 47 and the fourth cylinder 48 are on the same straight line and parallel to the horizontal guide rail 42 .

[0031] like Figures 1 to 4 As shown, the clamping frame 43 includes: a first L-shaped plate 431 and a second L-shaped plate 432, the vertical surfaces of the first L-shaped plate 431 and the second L-shaped plate 432 are arranged opposite to each other, the second L-shaped plate 432 slides in the vertical direction of the first L-shaped plate 431, the first L-shaped plate 431 is inverted on the horizontal guide rail 42, the top of the first L-shaped plate 431 is connected to the first cylinder 44, and the output end of the first cylinder 44 passes through the first L-shaped plate 431; a circular through hole 433 is opened at the bottom of the second L-shaped plate 432.

[0032] It should be noted that the second L-shaped plate 432 slides in the vertical direction of the first L-shaped plate 431 to ensure that the distance between the second L-shaped plate 432 and the working platform 2 is adjustable, thereby adjusting the distance value to effectively accommodate circular workpieces 7 of different sizes.

[0033] The circular through hole 433 at the bottom of the second L-shaped plate 432 is used for the extension of the first cylinder 44 to push out the circular workpiece 7 and place it in the alignment station for alignment.

[0034] like Figure 4As shown, the clamping claw 45 includes: a first fixing member 451, a second fixing member 452 and a spring 453; the first fixing member 451 and the second fixing member 452 are respectively arranged at the bottom of the second L-shaped plate 432, and the circular through hole 433 is located between the first fixing member 451 and the second fixing member 452, and the spring 453 is arranged inside the second L-shaped plate 432 and connected to the first fixing member 451.

[0035] The first fixing part 451 on the clamping claw 45 is clamped by the spring 453. When the workpiece is clamped, the circular workpiece 7 is located between the first fixing part 451 and the second fixing part 452. At this time, the first fixing part 451 will compress the spring 453, thereby clamping the circular workpiece 7 through the elastic force of the spring 453. When the first cylinder 44 pushes the circular workpiece 7 out, the elasticity will drive the first fixing part 451 to reset through its own elastic potential energy.

[0036] like Figure 6 As shown, a follower screw 491 is provided at the top of the output end of the motor 49, and the outer diameter of the follower screw 491 is smaller than the inner diameter of the circular workpiece 7. This is because when the circular workpiece 7 is being aligned, the circular workpiece 7 will fall onto the follower screw 491, and the rotation of the motor 49 drives the follower screw 491 and the circular workpiece 7 to rotate at the same time, and the fourth cylinder 48 drives the positioning pin 481 to be inserted into the opening of the circumferential side wall of the circular workpiece 7, thereby completing the alignment of the circular workpiece 7.

[0037] It should be noted that there is a slight friction between the circular workpiece 7 and the follower screw 491, and due to its own gravity, the motor 49 will also rotate with the follower screw 491 during the rotation process, so that the positioning pin 481 can align it. When the positioning pin 481 is inserted into the opening of the circular workpiece 7, the follower screw 491 rotates with the motor 49 to prevent the circular workpiece 7 from not rotating and the friction and wear caused by the rotation of the motor 49.

[0038] like Figure 1 and Figure 2 As shown, the alignment station on the working platform 2 is provided with a first position sensor 5 , and the positioning station on the working platform 2 is provided with a second position sensor 6 .

[0039] The second position sensor 6 is used to detect whether the circular workpiece 7 is placed on the output end of the third cylinder 47 on the working platform 2. When the circular workpiece 7 is placed on the working platform 2, the second position sensor 6 detects the circular workpiece 7, the third cylinder 47 starts and pushes the circular workpiece 7 onto the clamping claw 45, thereby clamping and positioning the circular workpiece 7. The first position sensor 5 is used to detect whether the circular workpiece 7 is placed on the output end of the motor 49. When the first position sensor 5 detects the circular workpiece 7, the motor 49 starts and drives the circular workpiece 7 to rotate.

[0040] The diameter of the circular through hole 433 is larger than the diameter of the output end of the first air cylinder 44. This is because when aligning the circular workpiece 7, the circular workpiece 7 needs to be pushed out of the clamping claw 45, so the output end of the first air cylinder 44 needs to pass through the circular through hole 433 and push the circular workpiece 7 to the output end of the motor 49, so as to perform the next step of alignment.

[0041] A positioning and alignment method for an automatic positioning and alignment device for a circular workpiece 7 with a side wall opening, comprising the following steps: S1: Place the circular workpiece 7 on the positioning station on the working platform 2, and push the circular workpiece 7 onto the clamping claw 45 on the clamping frame 43 for positioning by the third cylinder 47; S2: The second cylinder 46 drives the clamping frame 43 and the first cylinder 44 to move horizontally as a whole to the position directly above the motor 49 on the alignment station; S3: The first cylinder 44 pushes the circular workpiece 7 out of the clamping claw 45 and drops it onto the output end of the motor 49, and the motor 49 drives the circular workpiece 7 to rotate; S4: The positioning pin 481 on the fourth cylinder 48 penetrates into the opening of the side wall of the circular workpiece 7 to complete the alignment of the opening of the side wall of the circular workpiece 7.

[0042] Working process: First, the circular workpiece 7 with a hole in the side wall needs to be placed on the working platform 2, and the circular workpiece 7 is located directly below the second L-shaped plate 432 and directly above the output end of the third cylinder 47. When the second position sensor 6 detects the circular workpiece 7, the third cylinder 47 starts, and the output shaft of the third cylinder 47 extends upward, and drives the circular workpiece 7 to move upward, pushing the circular workpiece 7 into the clamping claw 45. The first fixing piece 451 on the clamping claw 45 will be displaced and push the spring 453 so that the spring 453 is compressed. When the circular workpiece 7 is completely stuck between the first fixing piece 451 and the second fixing piece 452, the circular workpiece 7 is clamped and fixed by the elastic potential energy of the spring 453 itself.

[0043] Subsequently, the second cylinder 46 starts, pushing the clamping frame 43 and the first cylinder 44 to move horizontally. When the clamping frame 43 moves to directly above the output shaft end of the motor 49, the circular workpiece 7 and the follower screw 491 on the motor 49 are located on the same axis. At this time, the first cylinder 44 starts, and the output end of the first cylinder 44 extends downward, passes through the circular through hole 433 on the second L-shaped plate 432, enters between the first fixing member 451 and the second fixing member 452, and pushes the circular workpiece 7 out, so that the circular workpiece 7 enters and is mounted on the follower screw 491.

[0044] When the circular workpiece 7 is detached from the clamping claw 45, the first position sensor 5 detects that the circular workpiece 7 has fallen, and the motor 49 is started. The output end of the motor 49 drives the follower screw 491 to rotate, and at the same time drives the circular workpiece 7 to rotate. At the same time, the fourth cylinder 48 will be started, and the output end of the fourth cylinder 48 will drive the positioning pin 481 to move horizontally and contact the circular workpiece 7. When the opening on the side wall of the circular workpiece 7 rotates to correspond to the positioning pin 481, the positioning pin 481 will be inserted into the opening of the circular workpiece 7. After the circular workpiece 7 is aligned, it will stop rotating. At this time, the follower screw 491 rotates with the motor 49 to prevent the circular workpiece 7 from not rotating and the friction and wear caused by the rotation of the motor 49. Finally, the output shaft end of the fourth cylinder 48 contracts, thereby completing the positioning and alignment of the circular workpiece 7.

[0045] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic positioning and alignment device for a circular workpiece with a side wall opening, comprising: A base (1), a working platform (2) and a support frame (3); the base (1) is provided with a working platform (2), and support frames (3) are respectively provided on both sides of the working platform (2); the invention is characterized in that it also comprises: a positioning and alignment mechanism (4), the positioning and alignment mechanism (4) is arranged on the base (1), and the working platform (2) is provided with a positioning station and an alignment station for a circular workpiece (7); the circular workpiece (7) enters the positioning station and is clamped and positioned by the positioning and alignment mechanism (4), the circular workpiece (7) is driven by the positioning and alignment mechanism (4) to translate to the alignment station, and the side opening of the circumferential wall of the circular workpiece (7) is aligned.

2. The automatic positioning and alignment device for a circular workpiece with a side wall opening according to claim 1, characterized in that: The positioning and alignment mechanism (4) comprises: a support plate (41), a horizontal guide rail (42), a clamping frame (43), a first cylinder (44), a clamping claw (45), a second cylinder (46), a third cylinder (47), a fourth cylinder (48) and a motor (49); the support plate (41) is arranged on the working platform (2); a horizontal guide rail (42) is arranged on the side of the support plate (41); a clamping frame (43) is slidably arranged on the horizontal guide rail (42); a first cylinder (44) is arranged on the top of the clamping frame (43); and a clamping claw (45) is arranged on the bottom of the clamping frame (43); A second cylinder (46) and a fourth cylinder (48) are respectively horizontally arranged on the support frame (3), the output end of the second cylinder (46) is connected to the clamping frame (43), and the output end of the fourth cylinder (48) is provided with a positioning pin (481), and the diameter of the positioning pin (481) is smaller than the diameter of the opening on the side wall of the circular workpiece (7); A third cylinder (47) and a motor (49) are respectively vertically arranged on the base (1), and the third cylinder (47) and the motor (49) are respectively located below the working platform (2), and the output ends of the third cylinder (47) and the motor (49) both pass through the working platform (2).

3. The automatic positioning and alignment device for a circular workpiece with a side wall opening according to claim 2, characterized in that: The clamping frame (43) comprises: a first L-shaped plate (431) and a second L-shaped plate (432); the vertical surfaces of the first L-shaped plate (431) and the second L-shaped plate (432) are arranged opposite to each other; the second L-shaped plate (432) slides in the vertical direction of the first L-shaped plate (431); the first L-shaped plate (431) is inverted on the horizontal guide rail (42); the top of the first L-shaped plate (431) is connected to the first cylinder (44); the output end of the first cylinder (44) passes through the first L-shaped plate (431); and a circular through hole (433) is provided at the bottom of the second L-shaped plate (432).

4. The automatic positioning and alignment device for a circular workpiece with a side wall opening according to claim 3, characterized in that: The clamping claw (45) comprises: a first fixing member (451), a second fixing member (452) and a spring (453); the first fixing member (451) and the second fixing member (452) are respectively arranged at the bottom of the second L-shaped plate (432), and the circular through hole (433) is located between the first fixing member (451) and the second fixing member (452); the spring (453) is arranged inside the second L-shaped plate (432) and connected to the first fixing member (451).

5. The automatic positioning and alignment device for a circular workpiece with a side wall opening according to claim 2, characterized in that: A follower screw (491) is provided at the top of the output end of the motor (49), and the outer diameter of the follower screw (491) is smaller than the inner diameter of the circular workpiece (7).

6. The automatic positioning and alignment device for a circular workpiece with a side wall opening according to claim 2, characterized in that: The alignment station on the working platform (2) is provided with a first position sensor (5), and the positioning station on the working platform (2) is provided with a second position sensor (6).

7. The automatic positioning and alignment device for a circular workpiece with a side wall opening according to claim 3, characterized in that: The diameter of the circular through hole (433) is greater than the diameter of the output end of the first cylinder (44).

8. A positioning and alignment method using an automatic positioning and alignment device for a circular workpiece with a side wall opening according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: placing the circular workpiece (7) on the positioning station on the working platform (2), and pushing the circular workpiece (7) onto the clamping claw (45) on the clamping frame (43) for positioning by means of the third cylinder (47); S2: The second cylinder (46) drives the clamping frame (43) and the first cylinder (44) to move horizontally as a whole to a position directly above the motor (49) on the alignment station; S3: The first cylinder (44) pushes the circular workpiece (7) out of the clamping claw (45) and drops it onto the output end of the motor (49), and the motor (49) drives the circular workpiece (7) to rotate; S4: The positioning pin (481) on the fourth cylinder (48) penetrates into the opening of the side wall of the circular workpiece (7), thereby completing the alignment of the opening of the side wall of the circular workpiece (7).

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