Aluminum piece machining precision detection device

Abstract

The invention relates to the field of precision detection, in particular to an aluminum part machining precision detection device. The invention provides an aluminum piece machining precision detection device capable of detecting the interior of a tubular aluminum piece. The aluminum piece machining precision detection device comprises a connecting disc, first calipers are fixedly connected to the connecting disc in an up-down symmetrical mode, second calipers are slidably connected to the first calipers, clamping rods are slidably connected into the second calipers, and the clamping rods are slidably connected to the second calipers. The side, close to the tubular aluminum piece, of the second caliper is fixedly connected with a connecting plate. Through the arrangement of the first pressure spring, the pull rope, the reel and other parts, a measurer can judge whether the thickness of the inner wall of the tubular aluminum part on the straight line is uniform or not by observing the rotation condition of the reel, the thickness condition of the inner wall of the tubular aluminum part on the same straight line can be detected at the same time, detection by the measurer is facilitated, and the measurement efficiency is improved. The comprehensiveness of aluminum part precision detection is improved, and the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of precision detection, and particularly relates to a device for detecting the machining precision of aluminum parts. Background Art

[0002] Aluminum alloy is one of the most widely used non-ferrous metal structural materials in industry, and has been widely used in aviation, aerospace, automotive, machinery manufacturing, shipbuilding and chemical industries. Tubular aluminum alloy is an aluminum alloy material in the shape of a tube. When processing tubular aluminum alloy, it is often necessary to detect the thickness of the inner wall of the workpiece. Usually, a thickness gauge or a vernier caliper is used to detect the thickness of tubular aluminum parts. However, due to their limitations, the thickness gauge and the caliper can only detect the thickness at one position at a time, and they often cannot penetrate deep into the tubular aluminum part, resulting in incomplete detection of the tubular aluminum part. Moreover, the inspectors need to constantly adjust the position to detect multiple parts of the tubular aluminum part, resulting in low efficiency. Summary of the Invention

[0003] In order to overcome the disadvantages that the existing detection device cannot penetrate deep into the tubular aluminum part and the detection result is incomplete, the technical problem is: to provide a device for detecting the machining precision of aluminum parts that can detect the inside of the tubular aluminum part.

[0004] The technical solution of the present invention is: a device for detecting the machining precision of aluminum parts, including a connection plate, the connection plate is symmetrically and fixedly connected with a first caliper, the first caliper is slidably connected with a second caliper, the second caliper is slidably connected with a clamping rod, the second caliper is fixedly connected with a connection plate, the connection plate is slidably connected with a plurality of sliding rods, the sliding rods are rotatably connected with a top plate, the sliding rods are wound with a first pressure spring, and the two ends of the first pressure spring are respectively connected with the connection plate and the sliding rods. One end of a pull rope is fixedly connected to the sliding rod farthest from the second caliper, and the remaining sliding rods are slidably connected with the pull rope. The second caliper is fixedly connected with a fixed frame, the fixed frame is rotatably connected with a wire winding wheel, the other end of the pull rope is fixed and wound on the wire winding wheel, and a torsion spring is connected between the wire winding wheel and the fixed frame.

[0005] Optionally, it further includes a connection frame. The second caliper is symmetrically and fixedly connected with a connection frame. The connection frame is slidably connected with a plurality of top rods. A second pressure spring is connected between the connection frame and the top rods. The second pressure spring is wound on the top rods. A plurality of the top rods are slidably connected with a prompt board. The prompt board is located inside the connection frame. An elastic member is connected between the prompt board and the connection frame.

[0006] Optionally, a fixing plate is provided on the top rod. The fixing plate is fixedly connected with the top rod. The fixing plate is located on the side of the prompt board away from the inner wall of the tubular aluminum part.

[0007] Optionally, it further includes a fixing frame. The fixing frame is symmetrically and fixedly connected to the second caliper. The fixing frame is fixedly connected to a writing board. The connecting frame is provided with a strip-shaped hole. The prompting board is fixedly connected to a drawing pen, and the drawing pen contacts the writing board.

[0008] Optionally, it further includes a connecting rod. The winding wheel is fixedly connected to the connecting rod. The connecting rod is fixedly connected to a drawing pen, and the drawing pen contacts the writing board.

[0009] Optionally, it further includes a connecting column. The connecting disk is fixedly connected to the connecting column. The connecting column is symmetrically and fixedly connected to a first telescopic rod. The first telescopic rod is fixedly connected to a friction block. The first telescopic rod is wound with a third compression spring.

[0010] Optionally, it further includes a second telescopic rod. The second caliper is symmetrically and fixedly connected to the second telescopic rod. The second telescopic rod is fixedly connected to a shovel. The second telescopic rod is wound with a fourth compression spring.

[0011] Optionally, it further includes a rotating connecting shaft. The second caliper and the first caliper are both fixedly connected to a connecting shaft. The connecting shaft is rotatably connected to a rotating roller, and the rotating roller contacts the tubular aluminum part.

[0012] Optionally, the drawing pen is a piece of chalk, and the writing board is a blackboard that can erase the chalk marks.

[0013] Optionally, the second telescopic rod is an arc-shaped telescopic rod.

[0014] The beneficial effects are as follows: 1. By setting components such as the first compression spring, the pull rope, and the winding wheel, the measuring personnel can judge whether the thickness of the inner wall of the tubular aluminum part on a straight line is uniform by observing the rotation of the winding wheel, and can detect the thickness of the inner wall of the tubular aluminum part on a straight line at the same time, which is convenient for the measuring personnel to detect, improves the comprehensiveness of the precision detection of the aluminum part, and improves the detection efficiency.

[0015] 2. By setting components such as the connecting frame, the ejector rod, and the prompting board, it is possible to visually judge whether there is a depression on the inner wall of the tubular aluminum part by observing the position change of the prompting board, and the detection is more comprehensive and in-depth.

[0016] 3. By setting the drawing pen and the writing board, it is possible to visually judge whether there is a depression on the inner wall of the tubular aluminum part, whether the thickness of the inner wall of the tubular aluminum part is uneven, or whether there is a protrusion on the inner wall of the tubular aluminum part by observing the traces of the drawing pen on the writing board; after use, erase the lines on the writing board, and the writing board can be reused.

[0017] 4. By providing a friction block, a first telescopic rod that shortens, and a third compression spring, the device is better fixed by pressing the friction block against the inner wall of the tubular aluminum part, improving the accuracy of detection.

[0018] 5. By providing a rotating roller, the friction between the device and the tubular aluminum part can be reduced, making the device rotate more smoothly. At the same time, a scraping knife is also provided. As the scraping knife rotates along the tubular aluminum part, it can remove the burrs on the tubular aluminum part, making the clamping of the first caliper and the second caliper more stable and the measurement of the device more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a first three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is a second three-dimensional structural schematic diagram of the present invention.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of components such as the connecting plate, sliding rod, and top plate of the present invention.

[0022] Figure 4 It is an enlarged three-dimensional structural schematic diagram of part A of the present invention.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the sliding rod, top plate, and first compression spring of the present invention.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of components such as the connecting frame, top rod, and second compression spring of the present invention.

[0025] Figure 7 It is a three-dimensional structural schematic diagram of components such as the reminder board, fixing frame, and writing board of the present invention.

[0026] Figure 8 It is an enlarged three-dimensional structural schematic diagram of part B of the present invention.

[0027] Figure 9 It is a three-dimensional structural schematic diagram of components such as the first telescopic rod, connecting column, and friction block of the present invention.

[0028] Figure 10 It is a three-dimensional structural schematic diagram of components such as the scraping knife and the second telescopic rod of the present invention.

[0029] Figure 11 It is a three-dimensional structural schematic diagram of components such as the rotating roller and the connecting shaft of the present invention.

[0030] Names of the labels in the figure: 1 - tubular aluminum part, 2 - connecting plate, 3 - first caliper, 4 - second caliper, 5 - clamping rod, 6 - connecting plate, 7 - sliding rod, 8 - top plate, 9 - first compression spring, 10 - pulling rope, 11 - wire winding wheel, 12 - fixed frame, 13 - torsion spring, 14 - connecting frame, 15 - ejector rod, 16 - second compression spring, 17 - reminder board, 1701 - elastic part, 18 - fixing bracket, 19 - writing board, 20 - connecting rod, 21 - drawing pen, 22 - connecting column, 23 - first telescopic rod, 24 - third compression spring, 25 - friction block, 26 - shovel, 27 - second telescopic rod, 28 - fourth compression spring, 29 - rotating roller, 30 - connecting shaft. Detailed implementation mode

[0031] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0032] Embodiment 1: A device for detecting the machining accuracy of aluminum parts, as Figures 1-5 shown, comprising a tubular aluminum part 1, a connecting plate 2, a first caliper 3, a second caliper 4, a clamping rod 5, a connecting plate 6, a sliding rod 7, a top plate 8, a first compression spring 9, a pulling rope 10, a wire winding wheel 11, a fixed frame 12 and a torsion spring 13. The connecting plate 2 is symmetrically and fixedly connected with the first caliper 3 up and down. The second caliper 4 is slidably connected to the first caliper 3. A clamping rod 5 is arranged in the second caliper 4. A connecting plate 6 is fixedly connected to the side of the second caliper 4 close to the tubular aluminum part 1. A plurality of sliding rods 7 are slidably connected to the connecting plate 6. One end of the sliding rod 7 close to the tubular aluminum part 1 is rotatably connected to the top plate 8. A first compression spring 9 is wound around the sliding rod 7. Two ends of the first compression spring 9 are respectively connected to the connecting plate 6 and the sliding rod 7. A pulling rope 10 is fixedly connected to the sliding rod 7 farthest from the second caliper 4. The remaining sliding rods 7 are slidably connected to the pulling rope 10. A fixed frame 12 is fixedly connected to the second caliper 4. A wire winding wheel 11 is rotatably connected in the fixed frame 12. One end of the pulling rope 10 is fixed and wound around the wire winding wheel 11. A torsion spring 13 is connected between the wire winding wheel 11 and the fixed frame 12.

[0033] When using this device to perform precision detection on the tubular aluminum part 1, first, the upper and lower first calipers 3 are clamped at the widest part of the tubular aluminum part 1. At this time, the diameter of the tubular aluminum part 1 can be measured. Then, the second caliper 4 is moved towards the tubular aluminum part 1 until the second caliper 4 is in close contact with the inner wall of the tubular aluminum part 1. At this time, the thickness of the tubular aluminum part 1 can be measured. When the second caliper 4 is moved towards the inner wall of the tubular aluminum part 1, the second caliper 4 drives the connecting plate 6 to move towards the tubular aluminum part 1. The connecting plate 6 drives the sliding rod 7 and the top plate 8 to move towards the tubular aluminum part 1. During this process, if the inner wall thickness of the tubular aluminum part 1 is uneven or there are protrusions on the inner wall of the tubular aluminum part 1, the top plate 8 will be squeezed and move away from the inner wall of the tubular aluminum part 1, driving the sliding rod 7 to move away from the inner wall of the tubular aluminum part 1. The pull rope 10 is pulled away from the inner wall of the tubular aluminum part 1, driving the winding wheel 11 to rotate. The torsion spring 13 is twisted under force, and the first pressure spring 9 is compressed. At this time, the measuring personnel can judge whether the inner wall thickness of the tubular aluminum part 1 at this place is uniform by observing the rotation of the winding wheel 11. If the winding wheel 11 rotates, the inner wall thickness of the tubular aluminum part 1 at this place is uneven. If the winding wheel 11 does not rotate, the inner wall thickness of the tubular aluminum part 1 at this place is uniform. After the measurement is completed, the second caliper 4 is moved away from the tubular aluminum part 1, and the connecting plate 6, the sliding rod 7, and the top plate 8 all move away from the tubular aluminum part 1. At this time, due to the reset action of the first pressure spring 9 and the torsion spring 13, the sliding rod 7 and the top plate 8 are driven to move back to the initial position close to the inner wall of the tubular aluminum part 1.

[0034] Embodiment 2: On the basis of Embodiment 1, an aluminum part processing precision detection device, as Figures 6-7 shown, further includes a connecting frame 14, a top rod 15, a second pressure spring 16, a prompt board 17, and an elastic member 1701. Connecting frames 14 are symmetrically and fixedly connected to the left and right sides of the second caliper 4. A plurality of top rods 15 are slidably connected in the connecting frames 14. The top rods 15 are provided with a fixing plate and a sliding plate. The fixing plate is fixedly connected to the top rod 15. The fixing plate is located on the side of the prompt board 17 away from the inner wall of the tubular aluminum part 1. The sliding plate is slidably connected to the top rod 15. The sliding plate is located on the side of the prompt board 17 close to the inner wall of the tubular aluminum part 1. A second pressure spring 16 is connected between the connecting frame 14 and the top rod 15. The second pressure spring 16 is wound around the top rod 15. A prompt board 17 is slidably connected between the plurality of top rods 15. The prompt board 17 is located inside the connecting frame 14. An elastic member 1701 is connected between the prompt board 17 and the side of the connecting frame 14 close to the tubular aluminum part 1. The elastic coefficient of the second pressure spring 16 is greater than the elastic coefficient of the elastic member 1701.

[0035] Since the elastic coefficient of the second pressure spring 16 is greater than that of the elastic member 1701, the elastic member 1701 is compressed in the initial state. When the second caliper 4 moves towards the inner wall of the tubular aluminum part 1, the connecting frame 14 also moves towards the inner wall of the tubular aluminum part 1 accordingly, thereby driving the ejector rod 15 and the prompting board 17 to move towards the inner wall of the tubular aluminum part 1. When the ejector rod 15 contacts the inner wall of the tubular aluminum part 1, the second caliper 4 does not contact the inner wall of the tubular aluminum part 1 and continues to move towards the inner wall of the tubular aluminum part 1. The ejector rod 15 is squeezed by the inner wall of the tubular aluminum part 1 and moves away from the inner wall of the tubular aluminum part 1, and the second pressure spring 16 is compressed. Due to the resetting effect of the elastic member 1701, the prompting board 17 moves away from the inner wall of the tubular aluminum part 1. When there is no depression on the inner wall of the tubular aluminum part 1, when the second caliper 4 contacts the inner wall of the tubular aluminum part 1, the ejector rod 15 and the second caliper 4 are at the same height. At this time, the prompting board 17 is at the position farthest from the inner wall of the tubular aluminum part 1. When there is a depression on the inner wall of the tubular aluminum part 1, when the second caliper 4 contacts the inner wall of the tubular aluminum part 1, there is an ejector rod 15 located in the depression on the inner wall of the tubular aluminum part 1. Therefore, the position of the upper ejector rod 15 is higher than that of the second caliper 4, and the position of the lower ejector rod 15 is lower than that of the second caliper 4. During the process of the prompting board 17 moving away from the inner wall of the tubular aluminum part 1, it will be blocked by the fixing plate on the ejector rod 15 located in the depression on the inner wall of the tubular aluminum part 1, and the prompting board 17 cannot reach the position farthest from the inner wall of the tubular aluminum part 1. By checking the position of the prompting board 17, it can be directly judged whether there is a depression on the inner wall of the tubular aluminum part 1; after the measurement is completed, the second caliper 4 is moved away from the inner wall of the tubular aluminum part 1. Since the elastic coefficient of the second pressure spring 16 is greater than that of the elastic member 1701, the second pressure spring 16 resets and drives the ejector rod 15 and the prompting board 17 to move towards the inner wall of the tubular aluminum part 1 until the ejector rod 15 and the prompting board 17 move back to their original positions and the elastic member 1701 is compressed.

[0036] Embodiment 3: On the basis of Embodiment 2, an aluminum part processing precision detection device, as Figures 7-8 shown, further includes a fixing frame 18, a writing board 19, a connecting rod 20 and a drawing pen 21. Fixing frames 18 are symmetrically and fixedly connected to the left and right sides of the second caliper 4. A writing board 19 is fixedly connected to the lower side of the fixing frame 18. A strip-shaped hole is opened in the front side of the connecting frame 14. The front end of the prompting board 17 passes through the strip-shaped hole on the front side of the connecting frame 14 and is fixedly connected to a drawing pen 21. The drawing pen 21 contacts the writing board 19. The drawing pen 21 is a piece of chalk, and the writing board 19 is a blackboard that can erase the chalk handwriting; it further includes a connecting rod 20. A connecting rod 20 is fixedly connected to the front side of the wire winding wheel 11. The connecting rod 20 passes through the fixing frame 12 and is fixedly connected to a drawing pen 21. The drawing pen 21 contacts the writing board 19.

[0037] When the prompt board 17 moves, the prompt board 17 drives the pen 21 to move on the writing board 19 to draw a straight line. It is set that when the prompt board 17 is at the initial position (the position farthest from the inner wall of the tubular aluminum part 1), the length of the straight line drawn by the pen 21 on the writing board 19 is the standard length. By checking whether the length of the straight line drawn by the pen 21 on the writing board 19 is equal to the standard length, if it is equal, there is no depression on the inner wall of the tubular aluminum part 1; if it is not equal, there is a depression on the inner wall of the tubular aluminum part 1. The rotation of the winding wheel 11 also drives the connecting rod 20 and the pen 21 to move, and the pen 21 draws an arc on the writing board 19. If there is an arc on the writing board 19, the thickness of the inner wall of the tubular aluminum part 1 is uneven or there is a protrusion on the inner wall of the tubular aluminum part 1; if there is no arc on the writing board 19, the thickness of the inner wall of the tubular aluminum part 1 is uniform and there is no protrusion. After use, just erase the lines on the writing board 19.

[0038] As Figure 9 shown, it further includes a connecting column 22, a first telescopic rod 23, a third compression spring 24 and a friction block 25. A connecting column 22 is fixedly connected to one side of the connecting disk 2 close to the tubular aluminum part 1. The first telescopic rods 23 are symmetrically and fixedly connected to the left and right sides of the connecting column 22. A friction block 25 is fixedly connected to one end of the first telescopic rod 23 close to the tubular aluminum part 1. A third compression spring 24 is wound around the first telescopic rod 23, and both ends of the third compression spring 24 are connected to the connecting column 22 and the friction block 25 respectively.

[0039] To better fix the device, first move the two friction blocks 25 in the direction close to the connecting disk 2. The friction blocks 25 move in the direction close to the connecting disk 2, causing the first telescopic rod 23 to shorten and the third compression spring 24 to be compressed. When the device is moved to the appropriate position of the tubular aluminum part 1, release the friction blocks 25. Due to the reset action of the third compression spring 24, the first telescopic rod 23 is driven to extend, and the friction blocks 25 move in the direction away from the connecting disk 2 until they are close to the inner wall of the tubular aluminum part 1, so that the device can be fixed in this way; when the device needs to be taken out, first move the two friction blocks 25 in the direction close to the connecting disk 2, causing the first telescopic rod 23 to shorten and the third compression spring 24 to be compressed, so that the device is no longer fixed, and the first caliper 3 and the second caliper 4 no longer clamp the tubular aluminum part 1, and then the device can be taken out.

[0040] As Figures 10-11As shown in the figure, it further includes a shovel blade 26, a second telescopic rod 27, a fourth compression spring 28, a rotating roller 29 and a connecting shaft 30. The left and right sides of the second caliper 4 are symmetrically and fixedly connected with the second telescopic rod 27. The second telescopic rod 27 is an arc-shaped telescopic rod, which is used to better fit the edge of the tubular aluminum part 1. One end of the second telescopic rod 27 close to the tubular aluminum part 1 is fixedly connected with the shovel blade 26. The fourth compression spring 28 is wound around the second telescopic rod 27. The two ends of the fourth compression spring 28 are respectively connected with the shovel blade 26 and the second telescopic rod 27. Connecting shafts 30 are fixedly connected to the sides of the second caliper 4 and the first caliper 3 that contact the tubular aluminum part 1. Rotating rollers 29 are rotatably connected to the connecting shafts 30, and the rotating rollers 29 are in contact with the tubular aluminum part 1. Before the device rotates on the tubular aluminum part 1, first move the two friction blocks 25 in the direction close to the connecting disk 2 so that the device is no longer fixed. Then rotate the device. The rotating rollers 29 can reduce the friction between the device and the tubular aluminum part 1, making the rotation smoother. While the device rotates, the shovel blade 26 and the second telescopic rod 27 will also rotate accordingly. The shovel blade 26 rotating along the tubular aluminum part 1 can remove the burrs on the tubular aluminum part 1, making the clamping of the first caliper 3 and the second caliper 4 more stable and the measurement of the device more accurate.

[0041] The above embodiments only represent the preferred embodiments of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, improvements and substitutions can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A device for detecting the machining accuracy of aluminum parts, characterized in that: The invention comprises a connecting plate (2), the connecting plate (2) being symmetrically fixedly connected to a first caliper (3), the first caliper (3) being slidably connected to a second caliper (4), the second caliper (4) being slidably connected to a clamping rod (5), the second caliper (4) being fixedly connected to a connecting plate (6), the connecting plate (6) being slidably connected to a plurality of sliding rods (7), the sliding rods (7) being rotatably connected to a top plate (8), the sliding rods (7) being wound with a first pressure spring (9), the two ends of the first pressure spring (9) being respectively connected to the connecting plate (6) is connected to the sliding rod (7), one end of a pull rope (10) is fixedly connected to the sliding rod (7) farthest from the second caliper (4), and the remaining sliding rods (7) are slidably connected to the pull rope (10), the second caliper (4) is fixedly connected to a fixing frame (12), the fixing frame (12) is rotatably connected to a winding wheel (11), the other end of the pull rope (10) is fixed and wound on the winding wheel (11), and a torsion spring (13) is connected between the winding wheel (11) and the fixing frame (12).

2. The aluminum parts processing accuracy detection device according to claim 1, characterized in that: It also includes a connecting frame (14), the second caliper (4) is symmetrically fixedly connected to the connecting frame (14), the connecting frame (14) is slidably connected to a plurality of push rods (15), a second pressure spring (16) is connected between the connecting frame (14) and the push rods (15), the second pressure spring (16) is wound around the push rods (15), a prompt plate (17) is slidably connected between the plurality of push rods (15), the prompt plate (17) is located in the connecting frame (14), and an elastic member (1701) is connected between the prompt plate (17) and the connecting frame (14).

3. The aluminum part processing accuracy detection device according to claim 2, characterized in that: A fixing plate is provided on the push rod (15), the fixing plate is fixedly connected to the push rod (15), and the fixing plate is located on a side of the prompt plate (17) away from the inner wall of the tubular aluminum part (1).

4. The aluminum part processing accuracy detection device according to claim 3, characterized in that: The invention also comprises a fixing frame (18), the second caliper (4) is symmetrically fixedly connected to the fixing frame (18), the fixing frame (18) is fixedly connected to a writing board (19), the connecting frame (14) is provided with a strip hole, the prompt board (17) is fixedly connected to a drawing pen (21), and the drawing pen (21) is in contact with the writing board (19).

5. The aluminum part processing accuracy detection device according to claim 4, characterized in that: It also includes a connecting rod (20), the winding wheel (11) is fixedly connected to the connecting rod (20), the connecting rod (20) is fixedly connected to a drawing pen (21), and the drawing pen (21) is in contact with the writing board (19).

6. The aluminum part processing accuracy detection device according to claim 5, characterized in that: It also comprises a connecting column (22), the connecting plate (2) being fixedly connected to the connecting column (22), the connecting column (22) being symmetrically fixedly connected to a first telescopic rod (23), the first telescopic rod (23) being fixedly connected to a friction block (25), and the first telescopic rod (23) being wound with a third pressure spring (24).

7. The aluminum part processing accuracy detection device according to claim 6, characterized in that: It also includes a second telescopic rod (27), the second caliper (4) is symmetrically fixedly connected to the second telescopic rod (27), the second telescopic rod (27) is fixedly connected to the scraper (26), and the second telescopic rod (27) is wound with a fourth pressure spring (28).

8. The aluminum part processing accuracy detection device according to claim 7, characterized in that: It also includes a rotating connecting shaft (30), the second caliper (4) and the first caliper (3) are both fixedly connected to the connecting shaft (30), the connecting shaft (30) is rotatably connected to a rotating roller (29), and the rotating roller (29) is in contact with the tubular aluminum part (1).

9. The aluminum part processing accuracy detection device according to claim 8, characterized in that: The marker pen (21) is a chalk, and the writing board (19) is a blackboard on which chalk marks can be erased.

10. The aluminum part processing accuracy detection device according to claim 9, characterized in that: The second telescopic rod (27) is an arc-shaped telescopic rod.

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