Cylindricity detection device

Abstract

The application provides a cylindricality detection device, comprising a base, a turret rotatably arranged relative to the base, the turret having a placement position for placing a to-be-detected piece, a gripper assembly for grabbing the to-be-detected piece, the gripper assembly being connected with the turret and rotating under the driving of the turret, the gripper assembly being rotatably arranged relative to the turret and capable of driving the to-be-detected piece to rotate, and a plurality of detection pieces arranged at the circumferential side of the turret, each detection piece being arranged along the circumferential side of the turret and detecting the cylindricality of the to-be-detected piece at different positions of the circumferential side of the to-be-detected piece. The application solves the problems of low detection efficiency and precision in the prior art.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, specifically to a cylindricity testing device. Background Technology

[0002] Existing methods for cylindricity testing often employ a combination of a workpiece clamping / moving device and a roundness meter / industrial camera. This method is time-consuming when placing the workpiece, resulting in long testing times and low efficiency. Furthermore, the existing clamping / moving devices and roundness meters / industrial cameras lack sufficient precision, leading to low accuracy in cylindricity testing data. Utility Model Content

[0003] The main objective of this application is to provide a cylindricity detection device to solve the problems of low efficiency and accuracy in cylindricity detection in the prior art.

[0004] To achieve the above objectives, according to one aspect of this application, a cylindricity testing device is provided, comprising: a substrate; a turret rotatably disposed relative to the substrate, the turret having a placement position for placing a workpiece to be tested; a gripper assembly for gripping the workpiece to be tested, the gripper assembly being connected to the turret and rotating under the drive of the turret, the gripper assembly being rotatably disposed relative to the turret and capable of driving the workpiece to be tested to rotate; and a plurality of testing elements disposed on the circumferential side of the turret, each testing element being arranged along the circumferential side of the turret, and each testing element detecting the cylindricity at different positions on the circumferential side of the workpiece to be tested.

[0005] Furthermore, the turret has a cross-section passing through and parallel to the axis of rotation of the turret, with all testing elements located on the same side of the cross-section.

[0006] Instruction manual PN314816HZYWDL

[0007] Furthermore, the turret includes a mounting plate, and multiple gripper assemblies are rotatably mounted on the mounting plate. Each gripper assembly is arranged circumferentially along the mounting plate, and the rotation axis of the gripper assembly relative to the mounting plate is eccentrically set with respect to the rotation axis of the mounting plate.

[0008] Furthermore, the turret also includes a placement plate located below the mounting plate. The placement plate has multiple placement positions arranged along the circumference of the placement plate, and the gripper assembly is vertically corresponding to the placement positions.

[0009] Furthermore, the gripper assembly includes: a rotary drive mechanism connected to the turret; a transmission component driven by the rotary drive mechanism and rotating under its drive, the transmission component being movably disposed relative to the rotary drive mechanism along the axial direction of the turret; a gripping drive mechanism connected to the transmission component and moving together with it; and a gripper located above the placement position, driven by the gripping drive mechanism and expanding and contracting under its drive to grip the workpiece to be tested.

[0010] Furthermore, at least a portion of the gripper assembly is height-adjustable and can lift the test piece to move away from the placement position. The gripper assembly has a height-adjustable follower. The cylindricity detection device also includes a drive wheel connected to the base. The drive wheel has an upward-facing drive surface, and the drive surface is undulating along the circumference of the drive wheel. The follower is supported on the drive surface and moves up and down under the drive of the drive surface.

[0011] Furthermore, the drive surface has a gripping segment, a detection segment, and a placement segment connected sequentially in the circumferential direction, with the detection segment facing the detection object and the height of the detection segment being higher than the height of the gripping segment and the placement segment.

[0012] Furthermore, the drive surface also has a transition segment. Along the circumference of the drive wheel, the placement segment, transition segment, and gripping segment are arranged in sequence, with the height of the transition segment being higher than the height of the gripping segment and the placement segment.

[0013] Instruction manual PN314816HZYWDL

[0014] Furthermore, the drive wheel has a circumferentially extending drive groove, the lower surface of which is the drive surface, and the driven member is disposed within the drive groove.

[0015] Furthermore, the gripper assembly includes: a transmission component, which is rotatable and height-adjustable; a gripper, which rotates and rises and falls synchronously with the transmission component; a floating component, on which the transmission component passes and rises and falls synchronously with the floating component; a driven component connected to the floating component, which drives the transmission component and the gripper to rise and fall through the floating component; and an elastic component, which abuts against the floating component and provides a downward driving force to the floating component.

[0016] By applying the technical solution of this application, a turret is rotatably mounted on a base. A gripper assembly is connected to the turret and rotates under the drive of the turret. When the gripper assembly rotates to the placement position of the workpiece to be tested, it can grip the workpiece and drive it to rotate with the turret. At the same time, the gripper assembly can drive the workpiece to rotate relative to the turret. When the gripper assembly and the workpiece to be tested reach the detection point on the circumferential side of the turret, the detection point can perform cylindricity detection on the workpiece to be tested. As the gripper assembly and the workpiece to be tested continuously rotate under the drive of the turret and pass through each detection point in sequence, the workpiece to be tested rotates relative to the turret under the drive of the gripper assembly. This allows the detection points arranged along the circumference of the turret to detect the cylindricity at different positions on the circumferential side of the workpiece to be tested, improving the efficiency of cylindricity detection. Multiple detection points detect the cylindricity at different positions on the circumferential side of the workpiece to be tested, improving the accuracy of cylindricity detection. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 The front view of the cylindricity detection device of this utility model is shown;

[0019] Figure 2 An isometric view of the cylindricity testing device of this utility model is shown;

[0020] Instruction manual PN314816HZYWDL

[0021] Figure 3 A schematic diagram of the gripper assembly of the cylindricity detection device of this utility model is shown.

[0022] The above figures include the following reference numerals:

[0023] 10. Matrix; 20. Turret; 21. Mounting plate; 22. Placement plate; 23. Placement position; 30. Gripper assembly; 31. Rotary drive mechanism; 32. Transmission component; 33. Gripping drive mechanism; 34. Gripper; 35. Follower; 36. Floating component; 37. Elastic component; 40. Test piece; 50. Detection piece; 60. Drive wheel; 61. Drive surface. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this application, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this application.

[0027] To address the issues of low efficiency and accuracy in cylindricity detection in existing technologies, this application provides a cylindricity detection device.

[0028] like Figures 1 to 3 A cylindricity testing device is shown, comprising: a base 10, a turret 20, a gripper assembly 30 for gripping a workpiece 40 to be tested, and a plurality of testing elements 50; the turret 20 is rotatably disposed relative to the base 10, and the turret 20 has a placement instruction PN314816HZYWDL position 23 for placing the workpiece 40 to be tested; the gripper assembly 30 is connected to the turret 20 and rotates under the drive of the turret 20, the gripper assembly 30 is rotatably disposed relative to the turret 20, and can drive the workpiece 40 to be tested to rotate; the testing elements 50 are disposed on the circumferential side of the turret 20, and each testing element 50 is arranged along the circumferential side of the turret 20, and each testing element 50 detects the cylindricity at different positions on the circumferential side of the workpiece 40 to be tested.

[0029] like Figure 1 , Figure 2 As shown, in this embodiment, the turret 20 is rotatably mounted on the base 10. The gripper assembly 30 is connected to the turret 20 and rotates under the drive of the turret 20. When the gripper assembly 30 rotates to the placement position 23 where the test piece 40 is located, it can grip the test piece 40 and drive it to rotate together with the turret 20. At the same time, the gripper assembly 30 can drive the test piece 40 to rotate relative to the turret 20. When the gripper assembly 30 and the test piece 40 rotate under the drive of the turret 20 and reach the detection piece 50 on the circumferential side of the turret 20, the detection... The component 50 can perform cylindricity detection on the component 40 under test. While the gripper assembly 30 and the component 40 under test are continuously rotating under the drive of the turret 20 and passing through each detection component 50 in sequence, the component 40 under test is rotated relative to the turret 20 under the drive of the gripper assembly 30. This allows each detection component 50 arranged along the circumference of the turret 20 to detect the cylindricity at different positions on the circumferential side of the component 40 under test, thus improving the efficiency of cylindricity detection. The multiple detection components 50 can detect the cylindricity at different positions on the circumferential side of the component 40 under test, thereby improving the accuracy of cylindricity detection.

[0030] In this embodiment, the cylindricity detection device is vertically positioned. The rotation axis of the turret 20 and the gripper assembly 30 relative to the rotation axis of the turret 20 both extend longitudinally, and subsequent lifting and lowering are also in the height direction. Of course, the cylindricity detection device can also be placed horizontally or in other ways, in which case the corresponding rotation axis and lifting direction will also be changed. In this embodiment, the gripper assembly 30 and the workpiece 40 rotate under the drive of the turret 20, that is, the workpiece 40 rotates around the rotation axis of the turret 20, i.e., the workpiece 40 revolves around the turret 20. Meanwhile, the workpiece 40 rotates relative to the turret 20 under the drive of the gripper assembly 30, that is, the workpiece 40 rotates around its own axis, i.e., the workpiece 40 rotates on its own axis. Thus, the workpiece 40 can rotate on its own axis while revolving around the turret 20, allowing it to change its orientation towards the detection piece 50 when it reaches that position, thereby achieving comprehensive detection of different sides.

[0031] like Figure 1 , Figure 2 As shown, the turret 20 in this embodiment has a cross-section passing through and parallel to the rotation axis of the turret 20. All detection elements 50 are located on the same side of the cross-section. This ensures that the cylindricity of different positions on the circumferential side of a test piece 40 can be detected by multiple detection elements 50 within a short distance, improving the efficiency of cylindricity detection. It should be noted that the placement of the detection elements 50 essentially means that each detection element 50 occupies only a circumferential range of no more than 180 degrees within the turret 20, thus making the distance between each detection element 50 relatively short. The test piece 40 only needs to rotate and a small angle to achieve 360-degree circumferential detection.

[0032] Taking the arrangement of three detection elements 50 on the same side of the cross-section of the rotation axis of the turret 20 as an example, the detection elements 50 are arranged at equal intervals. When the gripper assembly 30 and the workpiece 40 under test move a specific distance under the drive of the turret 20, the workpiece 40 under test rotates 120 degrees relative to the turret 20 under the drive of the gripper assembly 30. The gripper assembly 30 and the workpiece 40 under test move a specific distance three times under the drive of the turret 20, passing through the three detection elements 50 in sequence. At the same time, the workpiece 40 under test rotates 120 degrees relative to the turret 20 three times. This allows the detection elements 50 to perform 360-degree cylindricity detection on the workpiece 40 under test, improving the accuracy of cylindricity detection. It should be noted that the detection elements 50 can also be set to two, four, etc. Correspondingly, when the gripper assembly 30 and the workpiece 40 under test move a specific distance under the drive of the turret 20, the workpiece 40 under test rotates 180 degrees and 90 degrees relative to the turret 20 under the drive of the gripper assembly 30.

[0033] like Figure 3As shown, the turret 20 in this embodiment includes a mounting plate 21 and multiple gripper assemblies 30 rotatably mounted on the mounting plate 21. Each gripper assembly 30 is arranged circumferentially along the mounting plate 21. The rotation axis of the gripper assembly 30 relative to the mounting plate 21 is eccentrically set to ensure that the workpiece 40 under test can rotate under the influence of the gripper assemblies 30 and the mounting plate 21, and simultaneously, the workpiece 40 can rotate relative to the mounting plate 21 under the influence of the gripper assemblies 30. Each gripper assembly 30 rotates under the influence of the mounting plate 21. The device moves above the placement position 23 where each test piece 40 is placed, and grabs the test piece 40. The mounting plate 21 drives each gripper assembly 30 and each test piece 40 to rotate. At the same time, each gripper assembly 30 drives each test piece 40 to rotate relative to the mounting plate 21. While rotating relative to the mounting plate 21, each test piece 40 passes through multiple detection elements 50 in sequence, so that the cylindricity of each test piece 40 at different positions on the circumferential side can be detected by multiple detection elements 50. Multiple test pieces 40 are grabbed at the same time and the cylindricity of different positions on the circumferential side is detected in a short time and a short distance, which improves the efficiency and accuracy of cylindricity detection.

[0034] like Figure 1 , Figure 2 As shown, the turret 20 in this embodiment also includes a placement plate 22, which is located below the mounting plate 21. The placement plate 22 has multiple placement positions 23, and each test piece 40 is placed on a placement position 23. The placement positions 23 are arranged around the circumference of the placement plate 22, and the gripper assembly 30 is vertically corresponding to the placement positions 23. The gripper assembly 30 rotates simultaneously with the placement plate 22 under the drive of the turret 20. While rotating, the gripper assembly 30 can grab the test piece 40 on the placement position 23. The gripper assembly 30 does not need to stop or perform other cooperative actions to grab the test piece 40, saving the time of picking up and placing the test piece 40 and improving the detection efficiency.

[0035] like Figure 3As shown, the gripper assembly 30 in this embodiment includes: a rotary drive mechanism 31, a transmission component 32, a gripping drive mechanism 33, a gripper 34, a transmission wheel, and a transmission belt. The rotary drive mechanism 31 is connected to the turret 20 and is mounted above the mounting plate 21. The transmission component 32 is elongated and passes through the mounting plate 21. The transmission component 32 is driven by the rotary drive mechanism 31 through the transmission wheel, which is a hollow cylindrical structure mounted above the mounting plate 21. The transmission component 32 passes through the wheel and is coaxial with the transmission wheel. The transmission component 32 and the transmission wheel drive each other. The transmission wheel is driven by the rotary drive mechanism 31 through the transmission belt. The rotary drive mechanism 31 drives the transmission belt to rotate, which in turn drives the transmission wheel to rotate. The transmission wheel drives the transmission component 32 to rotate. The gripping drive mechanism 33 is connected to the transmission component 32 and has a spline. When the transmission component 32 is connected to the gripping drive mechanism 34 through the spline... (The rest of the text appears to be a typo and can be left as is.) When the 33-position connection is established, the gripping drive mechanism 33 can move together with the transmission component 32. The transmission component 32 is movably positioned relative to the rotary drive mechanism 31 along the axial direction of the turret 20. The gripper 34 is located above the placement position 23, and is drivenly connected to the gripping drive mechanism 33. Under the drive of the gripping drive mechanism 33, the gripper 34 expands and contracts to grip the workpiece 40 to be tested. The gripper 34 can move along the axial direction of the turret 20 to approach the workpiece 40 under the drive of the transmission component 32. The gripper 34 can extend into the workpiece 40 or surround the outside of the workpiece 40. The gripping drive mechanism 33 drives the gripper 34 to expand or contract to grip the workpiece 40, and rotates under the drive of the transmission component 32. This ensures that when the workpiece 40 is at the detection component 50, the cylindricity of different positions on the circumferential side can be detected by multiple detection components 50, thereby improving the accuracy of cylindricity detection.

[0036] like Figure 3 As shown, at least a portion of the gripper assembly 30 in this embodiment is height-adjustable and can drive the test piece 40 to rise and disengage from the placement position 23. The gripper assembly 30 has a height-adjustable follower 35. The cylindricity detection device also includes a drive wheel 60 connected to the base 10. The drive wheel 60 is a hollow cylinder located above the mounting plate 21, with the same central axis as the mounting plate 21 and a diameter that can be slightly larger than or equal to the diameter of the mounting plate 21. The drive wheel 60 has an upward-facing drive surface 61, and the drive surface 61 is arranged to rise and fall along the circumference of the drive wheel 60. The follower 35 is supported on the drive surface 61 and moves up and down under the drive of the drive surface 61. The follower 35 moves up and down on the undulating drive surface 61 under the drive of the drive surface 61, so that the gripper assembly 30 can move up and down to move closer to and away from the placement position 23, so as to facilitate gripping and releasing the test piece 40, save the time of picking up and placing the test piece 40, and improve the cylindricity detection efficiency.

[0037] In this embodiment, the driving surface 61 has a gripping segment, a detection segment, and a placement segment connected sequentially in a circumferential direction. The follower 35 moves up and down in the gripping segment, the detection segment, and the placement segment under the drive of the driving surface 61. The gripper assembly 30 grips the workpiece 40 to be tested in the gripping segment and moves the workpiece 40 to the detection segment. The detection segment faces the workpiece 50. The workpiece 50 detects the cylindricity of the workpiece 40. When it continues to move to the placement segment, the gripper assembly 30 can release the workpiece 40. The height of the detection segment is higher than the height of the gripping segment and the placement segment. The height of the detection segment matches the height of the workpiece 50. When the gripper assembly 30 moves to the detection segment, it can get close to the workpiece 50, thereby improving the accuracy of cylindricity detection.

[0038] The driving surface 61 in this embodiment also has a transition segment. Along the circumference of the driving wheel 60, the placement segment, the transition segment, and the gripping segment are arranged in sequence. The height of the transition segment is higher than the height of the gripping segment and the placement segment. There is at least one transition segment, which is arranged before and after the detection segment. This embodiment includes a transition segment located after the placement segment. The placement segment, transition segment, gripping segment, and detection segment are sequentially connected circumferentially on the driving surface 61. The detection segment is higher, followed by the transition segment, while the placement and gripping segments are lower. The gripper assembly 30 lowers its height to the workpiece 40, grips the workpiece 40 in the gripping segment, and then rises to enter the detection segment to detect the workpiece 40. After detection, the gripper assembly 30 lowers its height to enter the placement segment to release the workpiece 40. After releasing the workpiece 40, the gripper assembly 30 slightly rises its height to prepare for gripping the workpiece 40 again. The transition segment can contain multiple idle gripper assemblies 30 to prepare for gripping the workpiece 40, ensuring that the gripper assembly 30 does not knock over the workpiece 40 due to excessively low height, thus affecting the cylindricity detection efficiency and guaranteeing the cylindricity detection efficiency.

[0039] In an embodiment not shown, taking two transition segments as an example, the gripper assembly 30 lowers its height to grip the workpiece 40 in the gripping segment, raises its height to enter the first transition segment to prepare for entering the detection segment to detect the workpiece 40, and continues to raise its height to enter the detection segment. After the workpiece 40 is detected in the detection segment, it lowers its height to enter the transition segment to prepare for entering the placement segment to release the workpiece 40, and lowers its height again to enter the placement segment and release the workpiece 40. The gripper assembly 30 cooperates with each segment of the driving surface 61 to save time for the workpiece 40 to reach the detection part 50, thereby improving the cylindricity detection efficiency.

[0040] In this embodiment, the drive wheel 60 has a circumferentially extending drive groove that runs radially through the drive wheel 60 and is arranged with varying heights. The drive groove extends circumferentially in a high-low-high sequence. The highest point of the drive groove is the detection segment, the second highest point is the transition segment, and the two lower points are the grab and placement segments. The lower surface of the drive groove is the drive surface 61, and the upper surface of the drive groove is the limiting surface. The driven member 35 is disposed in the drive groove. The drive surface 61 drives the driven member 35 to move within the drive groove. The upper surface of the drive groove can limit the driven member 35, preventing it from derailing and ensuring the stability of the lifting and lowering movement of the grabbing assembly, thus ensuring the stable operation of the detection process.

[0041] like Figure 3 As shown, the gripper assembly 30 in this embodiment includes: a floating member 36 and an elastic member 37; a transmission member 32 passes through the floating member 36 and moves up and down synchronously with the floating member 36; a driven member 35 is connected to the floating member 36 and is supported on the driving surface 61, and moves up and down on the driving surface 61. The driven member 35 can drive the transmission member 32 and the gripper 34 to move up and down through the floating member 36. The floating member 36 includes upper and lower mounting plates, and a connecting post is provided between the two mounting plates. The connecting post passes through the mounting plate 21, so that the two mounting plates are located above and below the mounting plate 21, respectively. The driven member 35 is mounted on the upper mounting plate. Thus, when the driven member 35 moves up and down under the action of the driving surface 61, it drives the transmission member 32 to move up and down through the upper mounting plate, the connecting post, and the lower mounting plate. Meanwhile, the transmission component 32 and the lower mounting plate are rotatably coupled, meaning that when the transmission component 32 rotates under the drive of the rotary drive mechanism 31, it rotates relative to the mounting plate, while the mounting plate remains stationary. In this embodiment, an elastic element 37 is sleeved on the connecting column. The elastic element is located between the lower mounting plate and the lower surface of the mounting disk 21 and abuts against the lower mounting plate, thereby providing a downward driving force for the floating component 36. This allows the gripper 34 to rise and fall and extend into or surround the test piece 40, facilitating the gripper 34's gripping of the test piece 40. At the same time, the floating component 36 and the elastic element 37 provide floating space for the gripper 34, ensuring that the gripper 34 can successfully grip the test piece 40 without damaging or overturning it due to excessive descent force, thus guaranteeing the normal operation of the testing process and improving the efficiency of cylindricity testing.

[0042] It should be noted that "multiple" in the above embodiments refers to at least two.

[0043] Instruction manual PN314816HZYWDL

[0044] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0045] 1. It solves the problems of low efficiency and accuracy in cylindricity detection in existing technologies;

[0046] 2. Multiple test pieces are simultaneously grasped and their cylindricity at different positions on the circumferential side is detected within a short time and distance, improving the efficiency and accuracy of cylindricity detection;

[0047] 3. The test piece can perform 360-degree cylindricity testing on the test piece, improving the accuracy of cylindricity testing;

[0048] 4. The gripper assembly is set up vertically and vertically with the placement position and rotates synchronously. The gripper assembly does not need to stop or perform other actions to grip the test piece, saving the time of picking up and placing the test piece and improving the testing efficiency.

[0049] 5. The gripper assembly can be raised and lowered to move closer to and further away from the placement position, so as to facilitate gripping and releasing the test piece, save the time of picking up and placing the test piece, and improve the efficiency of cylindricity detection.

[0050] 6. The gripper assembly works in conjunction with each segment of the drive surface to save time for the workpiece to reach the inspection point and improve the efficiency of cylindricity detection.

[0051] Obviously, the embodiments described above are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort should fall within the scope of protection of this application.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0053] Instruction manual PN314816HZYWDL

[0054] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cylindricity detection device, characterized in that, include: Matrix (10); A turret (20) is rotatably disposed relative to the substrate (10) and has a placement position (23) for placing a test piece (40); A gripper assembly (30) for gripping the test piece (40), the gripper assembly (30) is connected to the turret (20) and rotates under the drive of the turret (20). The gripper assembly (30) is rotatably set relative to the turret (20) and can drive the test piece (40) to rotate. Multiple detection elements (50) are disposed on the circumferential side of the turret (20). Each detection element (50) is arranged along the circumferential side of the turret (20), and each detection element (50) detects the cylindricity at different positions on the circumferential side of the test piece (40).

2. The cylindricity detection device according to claim 1, characterized in that, The turret (20) has a cross-section passing through the axis of rotation of the turret (20) and parallel to the axis of rotation, and all the detection elements (50) are located on the same side of the cross-section.

3. The cylindricity detection device according to claim 1, characterized in that, The turret (20) includes a mounting plate (21), and there are multiple gripper assemblies (30) rotatably mounted on the mounting plate (21). Each gripper assembly (30) is arranged circumferentially along the mounting plate (21), and the rotation axis of the gripper assembly (30) relative to the mounting plate (21) is eccentrically set with respect to the rotation axis of the mounting plate (21).

4. The cylindricity detection device according to claim 3, characterized in that, The turret (20) further includes a placement plate (22), which is located below the mounting plate (21). The placement plate (22) has a plurality of placement positions (23), and each of the placement positions is arranged circumferentially along the placement plate (22), and the gripper assembly (30) is arranged vertically corresponding to the placement positions.

5. The cylindricity detection device according to any one of claims 1 to 4, characterized in that, The gripper assembly (30) includes: A rotary drive mechanism (31) is connected to the turret (20); The transmission component (32) is drivenly connected to the rotary drive mechanism (31) and rotates under the drive of the rotary drive mechanism (31). The transmission component (32) is movably arranged relative to the rotary drive mechanism (31) along the axial direction of the turret (20). A gripping drive mechanism (33) is connected to the transmission member (32) and moves together with the transmission member (32); The gripper (34) is located above the placement position. The gripper (34) is driven to connect with the gripping drive mechanism (33) and expands and contracts under the drive of the gripping drive mechanism (33) to grip the test piece (40).

6. The cylindricity detection device according to any one of claims 1 to 4, characterized in that, At least a portion of the gripper assembly (30) is height-adjustable and drives the test piece (40) to rise and leave the placement position. The gripper assembly (30) has a height-adjustable follower (35). The cylindricity detection device also includes a drive wheel (60) connected to the base (10). The drive wheel (60) has an upward-facing drive surface (61), and the drive surface (61) is arranged to rise and fall along the circumference of the drive wheel (60). The follower is supported on the drive surface (61) and moves up and down under the drive of the drive surface (61).

7. The cylindricity detection device according to claim 6, characterized in that, The drive surface (61) has a gripping segment, a detection segment and a placement segment connected in a circumferential sequence, the detection segment facing the detection element (50) and the height of the detection segment being higher than the height of the gripping segment and the placement segment.

8. The cylindricity detection device according to claim 7, characterized in that, The drive surface (61) also has a transition segment. Along the circumference of the drive wheel (60), the placement segment, the transition segment, and the gripping segment are arranged in sequence. The height of the transition segment is higher than the height of the gripping segment and the placement segment.

9. The cylindricity detection device according to claim 6, characterized in that, The drive wheel (60) has a circumferentially extending drive groove, the lower surface of the drive groove is the drive surface (61), and the driven member is disposed in the drive groove.

10. The cylindricity detection device according to claim 6, characterized in that, The gripper assembly (30) includes: The transmission component (32) is rotatable and can be raised and lowered. The gripper (34) rotates and moves up and down synchronously with the transmission component (32); A floating component (36) is provided, and the transmission component (32) is mounted on the floating component (36) and moves up and down synchronously with the floating component (36). The driven component is connected to the floating component (36) and drives the transmission component (32) and the gripper (34) to move up and down through the floating component (36). An elastic element (37) abuts against the floating element (36) and provides a downward driving force to the floating element (36).

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