Positioning and rotating device for parts under test

CN224772256UActive Publication Date: 2026-09-18采埃孚汽车科技(张家港)有限公司
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Patent Information

Application Number
CN202522567225.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-03
Publication Date
2026-09-18
Estimated Expiration
2035-12-03

AI Technical Summary

Technical Problem

[0005]有鉴于此,本实用新型提供一种待测零件的定位旋转装置,以至少解决现有技术中待测零件开孔粗糙度测量效率和准确率低的技术问题

Benefits of technology

[0017] The positioning and rotating device for the part to be tested of this utility model, through the limiting design of the stop component and the clamping component of the limiting component, designs at least one fixed position on the rotating base plate of the fixture, so that the opening of the part to be tested is located at the center of the rotating base plate of the fixture, thereby facilitating the rotating component to drive the part to be tested to rotate, and is used to detect the roughness of any point of the opening of the part to be tested, which greatly improves the measurement efficiency and accuracy of the roughness of the opening of the part to be tested.

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Abstract

The utility model provides a kind of positioning rotating device of part to be measured, comprising: rotating assembly, rotating assembly includes fixture rotating bottom plate and the rotating shaft fixed in one side of fixture rotating bottom plate;Limiting component, limiting component and rotating shaft are respectively arranged in the both sides of fixture rotating bottom plate;Limiting component includes the stop block component and the compression part fixed in fixture rotating bottom plate and mutually separate;Part to be measured has at least one aperture;In the state that part to be measured and positioning rotating device assemble, based on the compression of compression part, the both ends of part to be measured respectively abut on stop block component and compression part, and aperture coincides with the central axis of fixture rotating bottom plate.This embodiment can improve the measurement efficiency and accuracy of the roughness of the aperture of part to be measured.
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Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and more specifically, to a positioning and rotating device for a part to be tested. Background Technology

[0002] Existing automotive parts often have openings. To ensure the precision of these parts, it is necessary to measure the roughness of each angle of the opening.

[0003] However, due to the diverse shapes of automotive parts, manual placement methods cannot quickly and accurately measure the roughness of openings at various angles. For example, when an automotive part is rectangular, manual placement limits measurement to four points within the opening that are parallel to the edges of the rectangular part. Other points require angle shims, resulting in low efficiency, long measurement time, and low accuracy. The same problem exists when automotive parts have other shapes.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this utility model, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a positioning and rotating device for a part to be tested, so as to at least solve the technical problem of low efficiency and accuracy in measuring the roughness of the opening of the part to be tested in the prior art.

[0006] This utility model provides a positioning and rotating device for a part to be tested, comprising a rotating assembly and a limiting assembly. The rotating assembly includes a fixture rotating base plate and a rotating shaft fixed to one side of the fixture rotating base plate; the limiting assembly and the rotating shaft are respectively disposed on both sides of the fixture rotating base plate; the limiting assembly includes a stop block component and a clamping component fixed to the fixture rotating base plate and separated from each other; the part to be tested has at least one opening; when the part to be tested is assembled with the positioning and rotating device, based on the clamping of the clamping component, both ends of the part to be tested abut against the stop block component and the clamping component respectively, and the opening coincides with the central axis of the fixture rotating base plate. This embodiment, through the limiting design of the stop block component and the clamping component of the limiting assembly, designs at least one fixed position on the fixture rotating base plate, so that the opening of the part to be tested is located at the center of the fixture rotating base plate, thereby facilitating the rotation of the part to be tested by the rotating assembly to rotate, for detecting the roughness of any point of the opening of the part to be tested, greatly improving the measurement efficiency and accuracy of the roughness of the opening of the part to be tested.

[0007] In some embodiments, the limiting components include a first limiting component and a second limiting component; the first limiting component includes a first stop component and a first clamping component disposed along a first direction; the second limiting component includes a second stop component and a second clamping component disposed along a second direction; the first direction and the second direction intersect. This embodiment, by providing two limiting components along the intersecting first and second directions, i.e., the first limiting component and the second limiting component, allows for the design of at least two fixed positions on the fixture rotating base plate, thereby enabling measurement of the roughness of the openings in the part to be measured, further improving the measurement efficiency.

[0008] In some embodiments, the first stop component includes a first part stop and at least one mounting member, wherein the first part stop is fixed to the rotating base plate of the fixture via the mounting member. This embodiment, through the design of the first part stop and the mounting member, enables the first stop component to abut and limit the contact of the part to be tested, ensuring the fixing strength and fixing accuracy of the part in its assembled state.

[0009] In some embodiments, the first clamping component includes a first locking block base plate and a first rotating clamping bolt; the first locking block base plate is fixed to the fixture rotating base plate, and the first rotating clamping bolt is screwed into the threaded through hole of the first locking block base plate; the first rotating clamping bolt rotates on its own, moving closer to or further away from the first stop component along the axial direction of the threaded through hole of the first locking block base plate; the first direction is parallel to the axial direction of the threaded through hole of the first locking block base plate. In this embodiment, the first rotating clamping bolt of the first clamping component clamps and fixes the part to be tested, thereby ensuring the fixing strength of the part to be tested in the assembled state, so that the opening of the part to be tested is located at the center of the fixture rotating base plate, which facilitates the measurement of the opening roughness.

[0010] In some embodiments, the second stop component includes a second part stop, a third part stop, and a stop base plate; the stop base plate is fixed to the fixture rotating base plate; the second part stop and the third part stop are respectively disposed in the first groove and the second groove of the stop base plate; when the part to be measured is assembled with the positioning rotating device, the part to be measured abuts against the second part stop or the third part stop. This embodiment, by designing the second stop component to include multiple part stops and multiple grooves, allows for the design of multiple fixed positions on the fixture rotating base plate, thereby enabling measurement of parts with openings at at least multiple different positions, further improving the measurement efficiency of the opening roughness of the part to be measured.

[0011] In some embodiments, the second clamping component includes a part clamping block, a second rotary clamping bolt, and at least one guide post. The part clamping block has a third groove and a fourth groove. When the second clamping component and the second stop component jointly position the part to be measured, the first groove and the third groove jointly abut against the part to be measured, or the second groove and the fourth groove jointly abut against the part to be measured. The second rotary clamping bolt and the guide post are both fixedly connected to the part clamping block. The second rotary clamping bolt rotates on its own, moving closer to or away from the second stop component along the axial direction of the guide post. The second direction is parallel to the axial direction of the guide post. In this embodiment, the part clamping block of the second clamping component clamps and fixes the part to be measured, thereby ensuring the fixation strength of the part to be measured in the assembled state, so that the opening of the part to be measured is located at the center of the fixture rotating base plate, which facilitates the measurement of the opening roughness. At the same time, by designing the part clamping block to include multiple grooves, multiple fixed positions can be designed on the fixture rotating base plate, thereby measuring the part to be measured with openings in at least multiple different positions, further improving the measurement efficiency of the opening roughness of the part to be measured.

[0012] In some embodiments, the second clamping component includes a second locking block base plate and a third locking block base plate; the second locking block base plate is fixedly connected to the fixture rotating base plate, and the third locking block base plate is fixedly connected to the second locking block base plate; the plane of the second locking block base plate is parallel to the plane of the fixture rotating base plate, and the plane of the third locking block base plate is perpendicular to the plane of the fixture rotating base plate; a second rotating clamping bolt is screwed onto the third locking block base plate, and a guide post is sleeved on the third locking block base plate. This embodiment, through the above-described arrangement of the second and third locking block base plates, achieves a fixed connection between the second clamping component and the fixture rotating base plate, and facilitates the clamping block's contact with the part to be tested.

[0013] In some embodiments, the second clamping component includes at least one spring; the spring is sleeved on the guide post, and both ends of the spring are respectively connected to the base plate of the third locking block and the part clamping block. This embodiment, by providing a spring on the guide post, facilitates the spring's own elastic force in releasing the part clamping block from the part being tested when the part clamping block needs to release the part.

[0014] In some embodiments, the openings of the part to be tested include a first opening and a second opening. When the part to be tested is positioned by the second clamping component and the second stop component, and the part to be tested abuts against the first groove and the third groove respectively, the first opening coincides with the central axis of the rotating base plate of the fixture. When the part to be tested abuts against the second groove and the fourth groove respectively, the second opening coincides with the central axis of the rotating base plate of the fixture. This embodiment achieves the measurement of the roughness of the first opening and the second opening by limiting the contact between the part to be tested and the first and third grooves, or with the second and fourth grooves, and improves the measurement efficiency and accuracy of the roughness of the first opening and the second opening.

[0015] In some embodiments, the opening of the part to be tested includes a third opening; with the first clamping member and the first stop member jointly positioning the part to be tested, the third opening coincides with the central axis of the rotating base plate of the fixture. This embodiment achieves the measurement of the roughness of the third opening by limiting and abutting the part to be tested with the first clamping member and the first stop member, and improves the measurement efficiency and accuracy of the roughness of the third opening.

[0016] Compared with the prior art, this utility model has at least the following technical effects:

[0017] The positioning and rotating device for the part to be tested of this utility model, through the limiting design of the stop component and the clamping component of the limiting component, designs at least one fixed position on the rotating base plate of the fixture, so that the opening of the part to be tested is located at the center of the rotating base plate of the fixture, thereby facilitating the rotating component to drive the part to be tested to rotate, and is used to detect the roughness of any point of the opening of the part to be tested, which greatly improves the measurement efficiency and accuracy of the roughness of the opening of the part to be tested. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments conforming to the present invention and, together with the description, serve to explain the principles of the present invention. It is obvious that the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0019] Figure 1 This is a schematic diagram of the structure of a positioning and rotating device provided in an embodiment of the present invention.

[0020] Figure 2 yes Figure 1 A schematic diagram of an assembly state of the positioning and rotating device and the part to be tested.

[0021] Figure 3 yes Figure 1 Another assembly state diagram of the positioning and rotating device and the part to be tested.

[0022] Figure 4 yes Figure 1 Another assembly diagram of the positioning and rotating device and the part to be tested.

[0023] Figure label:

[0024] 100 Positioning Rotation Device

[0025] 110 Rotating Component

[0026] 111 Rotating axis

[0027] 112 Fixture Rotating Base Plate

[0028] 120 First stop component

[0029] 121 Mounting screws

[0030] 122 First part stop

[0031] 130 First clamping component

[0032] 131 First locking block base plate

[0033] 132 First Rotary Tightening Bolt

[0034] 140 Second stop component

[0035] 141 Second part stop

[0036] 142 Third part stop

[0037] 143 Stop block base plate

[0038] 150 Second clamping component

[0039] 151 Second locking block base plate

[0040] 152 Third locking block base plate

[0041] 153 Guide Column

[0042] 154 Second Rotary Clamping Bolt

[0043] 155 spring

[0044] 156 Part clamping block

[0045] 200 parts to be tested

[0046] 210 First opening

[0047] 220 Second opening

[0048] 230 Third opening

[0049] X First Direction

[0050] Y Second Direction Detailed Implementation

[0051] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0052] The use of terms such as "first," "second," and similar words in the specific description does not indicate any order, quantity, or importance, but is merely used to distinguish different components. Furthermore, in the description of this utility model, terms such as "upper," "lower," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0053] It should be noted that, unless otherwise specified, the embodiments of this utility model and the features in different embodiments can be combined with each other.

[0054] Figure 1 This is a schematic diagram of the structure of a positioning and rotating device provided in an embodiment of the present invention. Figure 2 yes Figure 1 A schematic diagram of an assembly state of the positioning and rotating device and the part to be tested. Figure 3 yes Figure 1 Another assembly state diagram of the positioning and rotating device and the part to be tested. Figure 4 yes Figure 1 Another assembly diagram of the positioning and rotating device and the part to be tested.

[0055] like Figures 1 to 4As shown, this utility model provides a positioning and rotating device 100 for a part 200 to be tested, including a rotating assembly 110 and a limiting assembly. The rotating assembly 110 includes a clamping rotating base plate 112 and a rotating shaft 111 fixed to one side of the clamping rotating base plate 112; the limiting assembly and the rotating shaft 111 are respectively disposed on both sides of the clamping rotating base plate 112. The limiting assembly includes a stop block component and a clamping component fixed to the clamping rotating base plate 112 and separated from each other; the part 200 to be tested has at least one opening; when the part 200 to be tested is assembled with the positioning and rotating device 100, based on the clamping of the clamping component, both ends of the part 200 to be tested abut against the stop block component and the clamping component respectively, and the opening coincides with the central axis of the clamping rotating base plate 112. Specifically, the clamping rotating base plate 112 can be disc-shaped, and the rotating shaft 111 can be cylindrical to facilitate rotation. The clamping rotating base plate 112 can be coaxial with the rotating shaft 111. The stop block component is fixed to the rotating base plate 112 of the fixture and is immovable and non-deformable, which facilitates the clamping component to clamp the part to be tested 200. The clamping component is also fixed to the rotating base plate 112 of the fixture, but part of the structure of the clamping component is movable, so that when the part to be tested 200 is assembled with the positioning rotating device 100, the part to be tested 200 is clamped, thus completing the fixation of the part to be tested 200 and the positioning rotating device 100. This facilitates the rotating assembly 110 to drive the part to be tested 200 to rotate, which is used to detect the roughness of any point of the opening of the part to be tested 200. This embodiment uses the limiting design of the stop component and the clamping component of the limiting component to design at least one fixed position on the rotating base plate 112 of the fixture, so that the opening of the part to be tested 200 is located at the center of the rotating base plate 112 of the fixture. This facilitates the rotating component 110 to drive the part to be tested 200 to rotate, which is used to detect the roughness of any point of the opening of the part to be tested 200, greatly improving the measurement efficiency and accuracy of the roughness of the opening of the part to be tested 200.

[0056] like Figure 1 As shown, in some embodiments, the limiting components include a first limiting component and a second limiting component. The first limiting component includes a first stop component 120 and a first clamping component 130 arranged along a first direction X; the second limiting component includes a second stop component 140 and a second clamping component 150 arranged along a second direction Y; the first direction X and the second direction Y intersect. In this embodiment, by setting two limiting components along the intersecting first direction X and second direction Y, i.e., the first limiting component and the second limiting component, at least two fixed positions can be designed on the fixture rotating base plate 112, thereby measuring the roughness of the opening of the part 200 to be measured with at least two openings at different positions, further improving the measurement efficiency of the roughness of the opening of the part 200 to be measured.

[0057] like Figure 1As shown, in some embodiments, the first stop component 120 includes a first part stop 122 and at least one mounting component. The first part stop 122 is fixed to the fixture rotating base plate 112 by the mounting component. Specifically, the first part stop 122 can be a cube to facilitate contact with a straight side of the part to be measured 200. Multiple mounting components can be used, and can be screws, rivets, snap-fit ​​components, or welded structures, etc., to achieve connection methods such as screwing, riveting, snap-fitting, or welding between the first part stop 122 and the fixture rotating base plate 112. Furthermore, the length direction of the first part stop 122 can be perpendicular to the first direction X. Through the design of the first part stop 122 and the mounting component, this embodiment can achieve the contact and limiting of the first stop component 120 with the part to be measured 200, ensuring the fixing strength and fixing accuracy of the part to be measured 200 in the assembled state.

[0058] like Figure 1 As shown, in some embodiments, the first clamping component 130 includes a first locking block base plate 131 and a first rotating clamping bolt 132. The first locking block base plate 131 is fixed to the fixture rotating base plate 112, and the first rotating clamping bolt 132 is screwed into the threaded through hole of the first locking block base plate 131. The first rotating clamping bolt 132 rotates on its own, moving closer to or further away from the first stop component 120 along the axial direction of the threaded through hole of the first locking block base plate 131; the first direction X is parallel to the axial direction of the threaded through hole of the first locking block base plate 131. Specifically, the length direction of the first locking block base plate 131 can be parallel to the length direction of the first part stop 122. In this embodiment, the first rotating clamping bolt 132 of the first clamping component 130 clamps and fixes the part to be tested 200, thereby ensuring the fixing strength of the part to be tested 200 in the assembled state, so that the opening of the part to be tested 200 is located at the center of the fixture rotating base plate 112, which facilitates the measurement of the opening roughness.

[0059] like Figure 1As shown, in some embodiments, the second stop component 140 includes a second part stop 141, a third part stop 142, and a stop base plate 143. The stop base plate 143 is fixed to the fixture rotating base plate 112. The second part stop 141 and the third part stop 142 are respectively disposed in the first groove and the second groove of the stop base plate 143. When the part to be tested 200 is assembled with the positioning rotating device 100, the part to be tested 200 abuts against the second part stop 141 or the third part stop 142. Specifically, the first groove and the second part stop 141 can realize one fixed position of the first stop component 120 for the part to be tested 200, and the second groove and the third part stop 142 can realize another fixed position of the first stop component 120 for the part to be tested 200. Further, the second stop component 140 may include multiple part stops and multiple grooves to realize multiple fixed positions for the part to be tested 200. This embodiment, through the design of the second stop component 140 including multiple part stops and multiple grooves, can design multiple fixed positions on the fixture rotating base plate 112, thereby measuring the part 200 to be tested with at least multiple openings at different positions, further improving the measurement efficiency of the opening roughness of the part 200 to be tested.

[0060] like Figure 1As shown, in some embodiments, the second clamping member 150 includes a part clamping block 156, a second rotary clamping bolt 154, and at least one guide post 153. The part clamping block 156 has a third groove and a fourth groove. When the second clamping member 150 and the second stop member 140 jointly position the part to be tested 200, the first groove and the third groove jointly abut against the part to be tested 200, or the second groove and the fourth groove jointly abut against the part to be tested 200. The second rotary clamping bolt 154 and the guide post 153 are both fixedly connected to the part clamping block 156. The second rotary clamping bolt 154 rotates on its own, moving closer to or away from the second stop member 140 along the axial direction of the guide post 153; the second direction Y is parallel to the axial direction of the guide post 153. Specifically, the part clamping block 156 is used to directly abut against the part to be tested 200. The second rotary clamping bolt 154 is used to control the part clamping block 156 to clamp or release the part to be tested 200. Guide posts 153 are used to move the part clamping block 156 along the axial direction of guide posts 153. There can be two guide posts 153, respectively disposed on both sides of the second rotary clamping bolt 154. The first and third grooves can jointly achieve one fixed position for the part to be tested 200, and the second and fourth grooves can jointly achieve another fixed position for the part to be tested 200. Furthermore, the part clamping block 156 can include multiple grooves to achieve multiple fixed positions for the part to be tested 200. In this embodiment, the part clamping block 156 of the second clamping component 150 clamps and fixes the part to be tested 200, thereby ensuring the fixation strength of the part to be tested 200 in the assembled state, so that the opening of the part to be tested 200 is located at the center of the fixture rotating base plate 112, which facilitates the measurement of the opening roughness. At the same time, by including multiple grooves in the part clamping block 156, multiple fixing positions can be designed on the fixture rotating base plate 112, so as to measure the part to be tested 200 with at least multiple openings in different positions, further improving the measurement efficiency of the opening roughness of the part to be tested 200.

[0061] like Figure 1As shown, in some embodiments, the second clamping component 150 includes a second locking block base plate 151 and a third locking block base plate 152. The second locking block base plate 151 is fixedly connected to the fixture rotating base plate 112, and the third locking block base plate 152 is fixedly connected to the second locking block base plate 151. The plane of the second locking block base plate 151 is parallel to the plane of the fixture rotating base plate 112, and the plane of the third locking block base plate 152 is perpendicular to the plane of the fixture rotating base plate 112. A second rotating clamping bolt 154 is screwed onto the third locking block base plate 152, and a guide post 153 is sleeved on the third locking block base plate 152. Specifically, the second locking block base plate 151 and the third locking block base plate 152 define a right-angle region, and the part clamping block 156 is located in this right-angle region. In this embodiment, the second clamping component 150 and the fixture rotating base plate 112 are fixedly connected through the above-mentioned arrangement of the second locking block base plate 151 and the third locking block base plate 152, and the part clamping block 156 is made easy to abut against the part 200 to be tested.

[0062] like Figure 1 As shown, in some embodiments, the second clamping component 150 includes at least one spring; the spring is sleeved on the guide post 153, and both ends of the spring are respectively connected to the third locking block base plate 152 and the part clamping block 156. Specifically, the number of springs can be the same as the number of guide posts 153. In this embodiment, by providing springs on the guide posts 153, it is convenient that when the part clamping block 156 needs to release the part to be tested 200, the springs will use their own elasticity to drive the part clamping block 156 to release the part to be tested 200.

[0063] like Figure 2 and Figure 3 As shown, in some embodiments, the openings of the part to be tested 200 include a first opening 210 and a second opening 220. When the second clamping member 150 and the second stop member 140 jointly position the part to be tested 200, and the part to be tested 200 abuts against the first groove and the third groove respectively, the first opening 210 coincides with the central axis of the fixture rotating base plate 112; when the part to be tested 200 abuts against the second groove and the fourth groove respectively, the second opening 220 coincides with the central axis of the fixture rotating base plate 112.

[0064] The following is a brief description of the method for measuring the roughness of the first opening 210: When the part to be measured 200 is clamped with the first and third grooves, the second part stop 141 limits the movement, and then the second rotating clamping bolt 154 is rotated to fix the part on the second clamping component 150 and the second stop component 140. This ensures that the center of the first opening 210 is at the center of the fixture rotating base plate 112. The required measurement point is then found by rotating the rotating shaft 111. The rotation angle of the rotating shaft 111 can be achieved manually or through equipment programming. After rotating to the required position, the shaft is locked. At this point, the probe enters the first opening 210 through the programmed path to measure the required position. After measurement, the probe is lifted, and the rotating shaft 111 rotates to the next required measurement point for measurement.

[0065] The following is a brief description of the method for measuring the roughness of the second opening 220: When the part to be measured 200 is clamped with the second and fourth grooves, the second rotating clamping bolt 154 is rotated after the second part stop 141 limits the movement, thereby fixing the part on the second clamping component 150 and the second stop component 140. This ensures that the center of the second opening 220 is at the center of the fixture rotating base plate 112, and the required measurement point is found by rotating the rotating shaft 111. The rotation angle of the rotating shaft 111 can be achieved manually or through equipment programming. After rotating to the required position, the shaft is locked. At this time, the probe enters the second opening 220 through the programmed path to measure the required position. After measurement, the probe is lifted, and the rotating shaft 111 rotates to the next required measurement point for measurement.

[0066] This embodiment achieves the measurement of the roughness of the first opening 210 and the second opening 220 by limiting the contact between the part to be measured 200 and the first and third grooves, or the second and fourth grooves, and improves the measurement efficiency and accuracy of the roughness of the first opening 210 and the second opening 220.

[0067] like Figure 4 As shown, in some embodiments, the opening of the part to be tested 200 includes a third opening 230. When the first clamping member 130 and the first stop member 120 jointly position the part to be tested 200, the third opening 230 coincides with the central axis of the fixture rotating base plate 112.

[0068] The following is a brief description of the method for measuring the roughness of the third opening 230: When the part to be measured 200 is clamped with the first clamping component 130 and the first stop component 120, the center of the third opening 230 is positioned at the center of the rotating base plate 112 of the fixture. The required measurement point is then located by rotating the rotating shaft 111. The angle of rotation of the rotating shaft 111 can be achieved manually or through equipment programming. After rotating to the required position, the shaft is locked. At this point, the probe enters the third opening 230 through the programmed path to measure the required position. After measurement, the probe is lifted, and the rotating shaft 111 rotates to the next required measurement point for further measurement.

[0069] In this embodiment, the roughness of the third opening 230 is measured by limiting and abutting the part to be tested 200 with the first clamping component 130 and the first stop component 120, and the measurement efficiency and accuracy of the roughness of the third opening 230 are improved.

[0070] As can be seen from the above embodiments, the positioning and locking device for brake calipers provided by this utility model achieves at least the following beneficial effects:

[0071] The positioning and rotating device for the part to be tested of this utility model, through the limiting design of the stop component and the clamping component of the limiting component, designs at least one fixed position on the rotating base plate of the fixture, so that the opening of the part to be tested is located at the center of the rotating base plate of the fixture, thereby facilitating the rotating component to drive the part to be tested to rotate, and is used to detect the roughness of any point of the opening of the part to be tested, which greatly improves the measurement efficiency and accuracy of the roughness of the opening of the part to be tested.

[0072] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this utility model. It should not be construed that the specific implementation of this utility model is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this utility model, and all such modifications or substitutions should be considered within the protection scope of this utility model.

Claims

1. A positioning and rotating device for a part to be tested, characterized in that, include: A rotating assembly, the rotating assembly including a clamp rotating base plate and a rotating shaft fixed to one side of the clamp rotating base plate; A limiting assembly is provided, wherein the limiting assembly and the rotating shaft are respectively disposed on both sides of the fixture rotating base plate; the limiting assembly includes a stop component and a clamping component fixed to the fixture rotating base plate and separated from each other; the part to be tested has at least one opening; when the part to be tested is assembled with the positioning rotating device, based on the clamping of the clamping component, both ends of the part to be tested abut against the stop component and the clamping component respectively, and the opening coincides with the central axis of the fixture rotating base plate.

2. The positioning and rotating device for the part to be tested according to claim 1, characterized in that, The limiting component includes a first limiting component and a second limiting component; The first limiting component includes a first stop component and a first pressing component arranged along a first direction; the second limiting component includes a second stop component and a second pressing component arranged along a second direction; the first direction and the second direction intersect.

3. The positioning and rotating device for the part to be tested according to claim 2, characterized in that, The first stop component includes a first part stop and at least one mounting component, wherein the first part stop is fixed to the rotating base plate of the fixture by the mounting component.

4. The positioning and rotating device for the part to be tested according to claim 2, characterized in that, The first clamping component includes a first locking block base plate and a first rotating clamping bolt; The first locking block base plate is fixed to the fixture rotating base plate, and the first rotating clamping bolt is screwed into the threaded through hole of the first locking block base plate; The first rotary clamping bolt rotates on its own, moving closer to or further away from the first stop block component along the axial direction of the threaded through hole in the first locking block base plate; the first direction is parallel to the axial direction of the threaded through hole in the first locking block base plate.

5. The positioning and rotating device for the part to be tested according to claim 2, characterized in that, The second stop component includes a second part stop, a third part stop, and a stop base plate; The stop block base plate is fixed to the clamp rotating base plate; The second part stop and the third part stop are respectively disposed in the first groove and the second groove of the stop base plate; When the part to be tested is assembled with the positioning and rotating device, the part to be tested abuts against the second part stop or the third part stop.

6. The positioning and rotating device for the part to be tested according to claim 5, characterized in that, The second clamping component includes a part clamping block, a second rotating clamping bolt, and at least one guide post; The part clamping block has a third groove and a fourth groove. When the second pressing component and the second stop component jointly position the part to be tested, the first groove and the third groove jointly abut against the part to be tested, or the second groove and the fourth groove jointly abut against the part to be tested. The second rotary clamping bolt and the guide post are both fixedly connected to the part clamping block; The second rotary clamping bolt rotates on its own, moving closer to or further away from the second stop component along the axial direction of the guide post; the second direction is parallel to the axial direction of the guide post.

7. The positioning and rotating device for the part to be tested according to claim 6, characterized in that, The second clamping component includes a second locking block base plate and a third locking block base plate; The second locking block base plate is fixedly connected to the clamp rotating base plate, and the third locking block base plate is fixedly connected to the second locking block base plate; The plane of the second locking block base plate is parallel to the plane of the fixture rotating base plate, and the plane of the third locking block base plate is perpendicular to the plane of the fixture rotating base plate. The second rotary clamping bolt is screwed to the bottom plate of the third locking block, and the guide post is sleeved on the bottom plate of the third locking block.

8. The positioning and rotating device for the part to be tested according to claim 7, characterized in that, The second clamping component includes at least one spring; the spring is sleeved on the guide post, and the two ends of the spring are respectively connected to the bottom plate of the third locking block and the part clamping block.

9. The positioning and rotating device for the part to be tested according to claim 6, characterized in that, The opening of the part to be tested includes a first opening and a second opening; When the second clamping component and the second stop component jointly position the part to be tested, when the part to be tested abuts against the first groove and the third groove respectively, the first opening coincides with the central axis of the fixture rotating base plate; when the part to be tested abuts against the second groove and the fourth groove respectively, the second opening coincides with the central axis of the fixture rotating base plate.

10. The positioning and rotating device for the part to be tested according to claim 2, characterized in that, The opening in the part to be tested includes a third opening; With the first clamping component and the first stop component jointly positioning the part to be tested, the third opening coincides with the central axis of the rotating base plate of the fixture.