Alignment device
By combining support components, tensioning components, elastic components, and expansion components, the misalignment of through holes in parts is automatically corrected, solving the problem of positional displacement during parts stacking and achieving efficient and precise assembly.
Patent Information
- Application Number
- CN202510559017.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-11-06
AI Technical Summary
During the stacking of parts, the through holes of the parts are misaligned due to visual interference and limited space, which cannot be corrected in time, resulting in low assembly efficiency and reduced accuracy.
It adopts a combination structure of support components, tensioning components, elastic components and expansion components. The elastic force of the elastic component makes the tensioning component move closer or further away, inserts into the inner wall of the through hole of the part and drives the part to move, so as to achieve automatic correction.
It improves the positional accuracy when multiple parts are stacked, reduces manual intervention, and enhances assembly efficiency and accuracy.
Smart Images
Figure CN123039965A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of precision positioning technology, and in particular to an alignment device. Background Technology
[0002] In related technologies, parts are provided with through holes. After multiple parts are stacked, they are locked to the product by locking components passing through the through holes. Due to problems such as field of vision interference and limited space, misalignment between parts is found during secondary inspection after multiple parts are stacked. The through holes of different parts are not aligned, and it is impossible to correct the misalignment in time. The product needs to be manually removed and put back in, resulting in low assembly efficiency and reduced assembly accuracy. Summary of the Invention
[0003] In view of this, it is necessary to provide an alignment device that can automatically correct the deviation after multiple parts are stacked, thereby improving the positional accuracy of the stacked parts.
[0004] An embodiment of this application provides an alignment device, including a support assembly, at least two tensioning members, an elastic member, and an expansion member. The support assembly has an installation space, and the direction of the central axis of the support assembly is defined as a first direction. The installation space extends through the support assembly along the first direction. The support assembly has a first connecting hole that extends in a direction perpendicular to the central axis and connects to the installation space. The at least two tensioning members are evenly distributed around the central axis and disposed in the installation space. The tensioning members are movably engaged with the support assembly so that the at least two tensioning members move closer to or further away from each other in a direction closer to or further away from the central axis. Each tensioning member includes a tensioning portion that extends out of the installation space in the first direction. An expansion space is formed between the at least two tensioning members. The elastic member is sleeved on the support assembly. The elastic member is configured to press against the tensioning members through the first connecting hole so that the at least two tensioning members move closer to each other. The expansion member is configured to push against the tensioning members by extending into the expansion space so that the at least two tensioning members move further away from each other and press against the elastic member in a direction away from the central axis.
[0005] In the initial state, the elastic element presses against the tensioning element with its own elastic force, causing at least two tensioning elements to be close to each other around the central axis. When it is necessary to correct the position of multiple stacked parts, at least two tensioning parts are inserted into the overlapping portions of the through holes of the multiple parts; then, the expanding element extends into the expansion space, pushing at least two tensioning elements, causing them to move away from each other. At this time, the elastic element undergoes elastic deformation due to the force exerted by the tensioning elements away from the central axis. The tensioning elements drive the tensioning parts away from each other, causing at least two tensioning parts to contact the inner walls of the through holes of the stacked parts and move the parts, thereby reducing the offset of the through hole centers between the parts. This achieves automatic correction when multiple parts are stacked, improving the positional accuracy of the stacked parts.
[0006] In at least one embodiment, the support assembly includes a support member and a guide member. The support member has an installation space. The guide member is disposed in the installation space and coaxially disposed with the support member. The guide member is configured to guide and cooperate with the tensioning member to guide the movement of the tensioning member. The guide member has a second connecting hole that penetrates the guide member along a first direction. The tensioning member extends out of the installation space through the second connecting hole.
[0007] The guiding cooperation between the guide and the tensioning member facilitates the movement of at least two tensioning members towards or away from the central axis, improving the smoothness of their movement. The second through hole allows the tensioning part to extend out of the mounting space along the first direction, thus facilitating its insertion into the through hole of the part for correction.
[0008] In at least one embodiment, the guide member includes at least two first guide portions, and the tensioning member includes a second guide portion. The first guide portions and the second guide portions correspond one-to-one and are movably engaged. The extension direction of each first guide portion intersects with a first direction, and the extension direction of each second guide portion is the same as the extension direction of the corresponding first guide portion.
[0009] Through the guiding cooperation of the first guide part and the second guide part, the tensioning member can move in a direction intersecting with the first direction, which is the direction where the central axis is located, so that each tensioning member can move closer to or further away from the central axis along the extension direction of the first guide part and the second guide part.
[0010] In at least one embodiment, the guide includes a guide body, the guide body is provided with a second connecting hole, a first guide portion is disposed on the guide body, and a portion of the tensioning member is disposed on the guide body and supported by the guide body.
[0011] The guide body can support the tensioning element, thereby enabling the tensioning element to be stably installed in the installation space, and thus improving the stability of the movement of the tensioning element relative to the support assembly.
[0012] In at least one embodiment, the outer peripheral wall of the support member is provided with an annular groove, the annular groove is connected to the first communicating hole, and the elastic member is disposed in the annular groove.
[0013] The annular groove can restrict the movement of the elastic element in a direction parallel to the central axis, and the elastic element located in the annular groove can interact with the tensioning element through the first connecting hole, making it less likely for the elastic element to deviate when subjected to the force of the tensioning element. This helps the elastic element maintain the accuracy of its own position, thereby improving the stability of the force applied by the elastic element to the tensioning element.
[0014] In at least one embodiment, the alignment device includes at least two pushers, and at least two first connecting holes are provided. Each pusher corresponds to a tensioning member and a first connecting hole. The pushers are movably disposed in the corresponding first connecting hole, and a portion of the pusher extends out of the first connecting hole. The elastic member presses against the tensioning member through the pushers.
[0015] When the expanding member extends into the expanding space, the tensioning member moves away from the central axis. At this time, the tensioning member can apply force to the portion of the pushing member located outside the first connecting hole, thereby pressing against the elastic member and causing the elastic member to undergo elastic deformation. When the expanding member extends out of the expanding space, the tensioning member is not pressed by the expanding member. The elastic member presses against the pushing member through its own elastic restoring force, and the pushing member then presses against the tensioning member, causing the tensioning member to move closer to the central axis. The elastic member and the pushing member can interact through the pushing member to achieve the movement of the tensioning member.
[0016] In at least one embodiment, the pusher is a spherical member.
[0017] While the spherical component moves along the extension direction of the first connecting hole, it can also rotate, so that when the force on the pushing component is uneven, it can adjust the interaction between itself and the elastic component and the tensioning component through its own rotation, so that the elastic component, the tensioning component and the pushing component can achieve force balance.
[0018] In at least one embodiment, the tensioning member is provided with a spherical groove, the inner wall of which matches the shape of the outer circumferential surface of the spherical member.
[0019] This design increases the contact area between the tensioning element and the spherical element, reduces the force per unit area of the tensioning element, and makes it easier for the tensioning element and the spherical element to press against each other, thus making the tensioning element less prone to damage.
[0020] In at least one embodiment, the expansion member includes an expansion portion having a first end and a second end opposite to each other; the cross-sectional shape of the first end is the same as the cross-sectional shape of the second end; along the direction from the second end to the first end, the outer contour of the expansion portion gradually narrows towards the central axis of the expansion portion.
[0021] The outer contour of the first end is smaller than that of the second end, so the first end can be inserted into the expansion space first, which facilitates the entire expansion part to be inserted into the expansion space. As the expansion part gradually extends into the expansion space, the expansion space gradually increases, and the tensioning member is moved by the push of the expansion part, thereby realizing the movement of the tensioning member away from the central axis.
[0022] In at least one embodiment, the tensioning member has a mating surface on the side facing the central axis of the support assembly, and the mating surfaces of at least two tensioning members are used to enclose and form an expansion space; the shape of the mating surface matches the outer peripheral surface of the expansion portion, and when the expansion portion extends into the expansion space along the first direction, the mating surface fits against the outer peripheral surface of the expansion portion.
[0023] By matching and fitting the shape of the mating surface with the outer peripheral surface of the expansion part, the expansion part can be guided into the expansion space along the first direction, improving the smoothness of the expansion part entering the expansion space. On the other hand, it can increase the contact area between the expansion part and the mating surface, that is, increase the area on which the expansion part applies force to the tensioning member, reduce the force per unit area of the mating surface, and make the tensioning member less prone to wear. Attached Figure Description
[0024] Figure 1 This is a partial sectional view used in this application to illustrate the mating relationship between the part and the locking element.
[0025] Figure 2 This is a perspective view of the alignment device in one embodiment of this application.
[0026] Figure 3 This is an exploded view of an alignment device according to an embodiment of this application.
[0027] Figure 4 This is an embodiment of the present application showing a cross-sectional view of a part and an alignment device.
[0028] Figure 5 This is a cross-sectional view of an alignment device according to an embodiment of this application.
[0029] Figure 6 This is an embodiment of the present application, illustrating the relationship between the part and the tensioning element when the part is misaligned.
[0030] Figure 7 This is a schematic diagram illustrating the fit between the part and the tensioning member after the part has been corrected, as one embodiment of this application.
[0031] Explanation of main component symbols 100. Alignment device; 10. Support assembly; 11. Support member; 111. Installation space; 112. Limiting groove; 113. Connecting hole; 114. Annular groove; 12. Guide member; 121. Guide body; 1211. Second connecting hole; 122. First guide part; 20. Tensioning member; 21. Tensioning part; 22. Expansion space; 23. Second guide part; 24. Tensioning body; 241. Spherical groove; 242. Mating surface; 30. Elastic member; 40. Outer expansion member; 41. Outer expansion part; 411. First end; 412. Second end; 42. Mounting part; 50. Connecting member; 60. Pushing member; 200. Product; 300. Part; 301. First part; 302. Second part; 303. Through hole; 400. Locking member; L. Central shaft; X. First direction.
[0032] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation
[0033] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0034] In the description of the embodiments of this application, the technical terms "first", "second", etc. are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.
[0035] Please see Figure 1 In related technologies, multiple parts 300 with through holes 303 need to be stacked on product 200, and a locking member 400 is used to pass through the through holes 303 of each part 300 to lock the parts 300 onto product 200. However, after multiple parts 300 are stacked, the centers of the through holes 303 of each part 300 are easily misaligned, resulting in only partial overlap of the through holes 303 of multiple parts 300. This makes it difficult for the locking member 400 to pass through multiple parts 300. After the parts 300 are stacked on product 200, due to problems such as field of view interference and limited space, a second inspection after multiple parts 300 are stacked reveals that the parts 300 are misaligned. The through holes 303 of different parts 300 are not aligned, but it is impossible to correct the misalignment in time. It is necessary to manually remove product 200 and put it back in, resulting in low assembly efficiency and reduced assembly accuracy.
[0036] An embodiment of this application provides an alignment device, including a support assembly, at least two tensioning members, an elastic member, and an expansion member. The support assembly has an installation space, and the direction of the central axis of the support assembly is defined as a first direction. The installation space extends through the support assembly along the first direction. The support assembly has a first connecting hole that extends in a direction perpendicular to the central axis and connects to the installation space. The at least two tensioning members are evenly distributed around the central axis and disposed in the installation space. The tensioning members are movably engaged with the support assembly so that the at least two tensioning members move closer to or further away from each other in a direction closer to or further away from the central axis. Each tensioning member includes a tensioning portion that extends out of the installation space in the first direction. An expansion space is formed between the at least two tensioning members. The elastic member is sleeved on the support assembly. The elastic member is configured to press against the tensioning members through the first connecting hole so that the at least two tensioning members move closer to each other. The expansion member is configured to push against the tensioning members by extending into the expansion space so that the at least two tensioning members move further away from each other and press against the elastic member in a direction away from the central axis.
[0037] In the initial state, the elastic element presses against the tensioning element with its own elastic force, causing at least two tensioning elements to be close to each other around the central axis. When it is necessary to correct the position of multiple stacked parts, at least two tensioning parts are inserted into the overlapping portions of the through holes of the multiple parts; then, the expanding element extends into the expansion space, pushing at least two tensioning elements, causing them to move away from each other. At this time, the elastic element undergoes elastic deformation due to the force exerted by the tensioning elements away from the central axis. The tensioning elements drive the tensioning parts away from each other, causing at least two tensioning parts to contact the inner walls of the through holes of the stacked parts and move the parts, thereby reducing the offset of the through hole centers between the parts. This achieves automatic correction when multiple parts are stacked, improving the positional accuracy of the stacked parts.
[0038] The embodiments of this application will be further described below with reference to the accompanying drawings.
[0039] like Figure 2 and Figure 3 As shown, one embodiment of this application provides an alignment device 100, including a support assembly 10, at least two tensioning members 20, an elastic member 30, and an expansion member 40.
[0040] Please see Figure 4 In some embodiments, the support component 10 is provided with an installation space 111. The direction of the central axis L of the support component 10 is defined as the first direction X. The installation space 111 passes through the support component 10 along the first direction X. The support component 10 is provided with a first connecting hole 303. The first connecting hole 303 extends in a direction perpendicular to the central axis L and connects to the installation space 111.
[0041] At least two tensioning members 20 are evenly distributed around a central axis L and disposed in the mounting space 111. The tensioning members 20 are movably engaged with the support assembly 10 so that the at least two tensioning members 20 move closer to or further away from each other in a direction toward or away from the central axis L. Each tensioning member 20 includes a tensioning portion 21 that extends out of the mounting space 111 along a first direction X. An expansion space 22 is formed between the at least two tensioning members 20.
[0042] The elastic element 30 is sleeved on the outside of the support assembly 10. The elastic element 30 is configured to press against the tensioning element 20 through the first connecting hole 303, so that at least two tensioning elements 20 are brought closer to each other. The expansion member 40 is configured to push against the tensioning element 20 by extending into the expansion space 22, so that at least two tensioning elements 20 are moved away from each other and press against the elastic element 30 in a direction away from the central axis L.
[0043] When the expansion member is not placed in the expansion space 22, the alignment device 100 is in its initial state. In this initial state, the elastic member 30 presses against the tensioning member 20 with its own elastic force, causing at least two tensioning members 20 to be in a compressed state around the central axis L. When it is necessary to correct the position of multiple stacked parts 300, at least two tensioning parts 21 are inserted into the overlapping portions of the through holes 303 of the multiple parts 300; then the expansion member 40 extends into the expansion space 22, pushing against at least two tensioning members 20, causing them to move away from each other. At this time, the elastic member 30 undergoes elastic deformation after being subjected to a force from the tensioning members 20 in the direction away from the central axis L. The tensioning member 20 drives the tensioning parts 21 to move away from each other, so that at least two tensioning parts 21 contact the inner wall of the through hole 303 of the stacked parts 300 and drive the parts 300 to move, thereby reducing the offset of the center of the through hole 303 between the parts 300, thereby realizing automatic correction when multiple parts 300 are stacked and improving the positional accuracy of the stacked multiple parts 300.
[0044] Please see Figure 3 and Figure 4 In some embodiments, the support assembly 10 includes a support member 11 and a guide member 12, with the support member 11 having an installation space 111. The guide member 12 is disposed in the installation space 111 and coaxially arranged with the support member 11, and is configured to guide and cooperate with the tensioner 20 to guide the movement of the tensioner 20. The guide member 12 has a second connecting hole 1211 that extends through the guide member 12 along a first direction X, and the tensioning part 21 extends out of the installation space 111 through the second connecting hole 1211.
[0045] The guide member 12 and the tensioning member 20 are guided together, which helps to guide at least two tensioning members 20 to move closer to or further away from each other in a direction closer to or further away from the central axis L, thereby improving the smoothness of the movement of the tensioning members 20. The second through hole 303 is provided to facilitate the tensioning part 21 to extend out of the installation space 111 along the first direction X, and thus facilitates the tensioning part 21 to extend into the through hole 303 of the part 300 to correct the deviation of the part 300.
[0046] Please see Figure 3 and Figure 4 In some embodiments, the guide member 12 includes a guide body 121, which has a second connecting hole 1211. A first guide portion 122 is disposed on the guide body 121, and a portion of the tensioning member 20 is disposed on and supported by the guide body 121. Specifically, the guide body 121 is generally cylindrical, and the guide body 121 is coaxially disposed with the support member 11. The center line of the second connecting hole 1211 is on the same straight line as the central axis L.
[0047] The guide body 121 can support the tensioner 20, thereby enabling the tensioner 20 to be stably installed in the installation space 111, and thus improving the stability of the movement of the tensioner 20 relative to the support assembly 10.
[0048] Please see Figure 3 and Figure 5 In some embodiments, the guide member 12 includes at least two first guide portions 122, which are disposed on the guide body 121. The at least two first guide portions 122 are arranged around the central axis L.
[0049] The tensioning member 20 includes a second guide portion 23. The first guide portion 122 and the second guide portion 23 correspond to each other and are movably engaged. The extension direction of each first guide portion 122 intersects with the first direction X, and the extension direction of each second guide portion 23 is the same as the extension direction of the corresponding first guide portion 122.
[0050] Through the guiding cooperation of the first guide portion 122 and the second guide portion 23, the tensioning member 20 can move in a direction intersecting with the first direction X, which is the direction where the central axis L is located, thereby enabling each tensioning member 20 to move closer to or further away from the central axis L in the extension direction of the first guide portion 122 and the second guide portion 23.
[0051] Please see Figure 3 and Figure 5 In some embodiments, the first guide portion 122 is a guide protrusion, and the second guide portion 23 is a guide groove, with the guide protrusion located in the guide groove. The relative movement of the tensioning member 20 and the guide member 12 is achieved by moving the guide protrusion relative to the guide groove.
[0052] Please see Figure 5 In some embodiments, the inner wall surface of the support member 11 is provided with a limiting groove 112, which is connected to the installation space 111. A portion of the guide protrusion is disposed on the upper surface of the guide body 121 to cooperate with the guide groove; a portion of the guide protrusion is disposed on the outer peripheral surface of the guide body 121 and disposed in the limiting groove 112 to restrict the relative rotation of the guide member 12 and the support member 11.
[0053] Please see Figure 2 and Figure 5 In some embodiments, the alignment device 100 further includes a connector 50, the support member 11 is provided with a connecting hole 113, the connecting hole 113 extends in a direction perpendicular to the central axis L, the connector 50 is disposed in the connecting hole 113 and abuts against the guide member 12 to restrict the movement of the guide member 12.
[0054] In some embodiments, the connector 50 is a screw and the connecting hole 113 is a threaded hole; it is understood that in other embodiments, the connector 50 may also be a bolt, pin or other component.
[0055] In some embodiments, multiple connectors 50 are provided, each connector 50 corresponding to a connecting hole 113. The multiple connecting holes 113 are evenly distributed on the support 11 around the central axis L, thereby improving the stress stability of the guide 12. For example, three connecting holes 113 are provided.
[0056] Please see Figure 3 In some embodiments, the support member 11 is generally cylindrical, with its radial direction perpendicular to the central axis L. At least two tensioning members 20 are capable of moving radially toward or away from each other along the support member 11.
[0057] Please see Figure 3 and Figure 5 In some embodiments, three tensioning members 20 are provided, and the three tensioning members 20 are evenly distributed around the central axis L. Under the action of the outward expansion member 40, the three tensioning members 20 can move simultaneously away from the central axis L so that the tensioning members 20 expand and tighten the through holes 303 of the part 300, thereby achieving positional correction of different through holes 303.
[0058] Understandably, in other embodiments, the tensioning element 20 may also be provided in two, four, or other configurations.
[0059] Please see Figure 2 and Figure 3 In some embodiments, the outer peripheral wall of the support member 11 is provided with an annular groove 114, which communicates with the first communicating hole 303, and the elastic member 30 is disposed in the annular groove 114.
[0060] The annular groove 114 can restrict the movement of the elastic element 30 in a direction parallel to the central axis L, and the elastic element 30 located in the annular groove 114 can interact with the tensioning element 20 through the first connecting hole 303, so that the elastic element 30 is not easily deviated when subjected to the force of the tensioning element 20, which is beneficial to the elastic element 30 maintaining its own position accuracy, thereby improving the stability of the force applied by the elastic element 30 to the tensioning element 20.
[0061] In some embodiments, the elastic element 30 is an elastic rubber ring.
[0062] In some embodiments, “the elastic member 30 is configured to press the tensioner 20 via the first connecting hole 303” includes the case where the elastic member 30 directly contacts the tensioner 20 and presses the tensioner 20. For example, a portion of the tensioner 20 contacts the elastic member 30 through the first connecting hole 303 to achieve the pressing of the tensioner 20 by the elastic member 30.
[0063] Please see Figure 5 In some embodiments, "the elastic member 30 is configured to press the tensioner 20 via the first connecting hole 303" includes the case where the elastic member 30 indirectly presses the tensioner 20 through other components. For example, the elastic member 30 presses the tensioner 20 through the pusher 60.
[0064] The alignment device 100 includes at least two pushers 60, and at least two first connecting holes 303 are provided. Each pusher 60 corresponds to a tensioner 20 and a first connecting hole 303. The pusher 60 is movably disposed in the corresponding first connecting hole 303, and a portion of the pusher 60 extends out of the first connecting hole 303.
[0065] When the expanding member 40 extends into the expanding space, the tensioning member 20 moves away from the central axis L. At this time, the tensioning member 20 can apply force to the portion of the pushing member 60 located outside the first connecting hole 303, thereby pressing against the elastic member 30 and causing the elastic member 30 to undergo elastic deformation. When the expanding member 40 extends out of the expanding space, the tensioning member 20 is not pressed by the expanding member 40. The elastic member 30 presses against the pushing member 60 through its own elastic restoring force, and the pushing member 60 then presses against the tensioning member 20, causing the tensioning member 20 to move closer to the central axis L. The elastic member 30 and the pushing member 60 can interact through the pushing member 60 to achieve the movement of the tensioning member 20.
[0066] Please see Figure 5 In some embodiments, the pusher 60 is a spherical component. For example, the spherical component is a steel ball.
[0067] While the spherical part moves along the extension direction of the first connecting hole 303, it can also rotate, so that when the force on the pusher 60 is uneven, it can adjust the interaction between itself and the elastic part 30 and the tensioning part 20 by rotating itself, so that the elastic part 30, the tensioning part 20 and the pusher 60 can achieve force balance.
[0068] Please see Figure 3 and Figure 5 In some embodiments, the tensioning member 20 includes a tensioning body 24, which is provided with a spherical groove 241. The inner wall of the spherical groove 241 matches the shape of the outer circumferential surface of the spherical member. This arrangement increases the contact area between the tensioning member 20 and the spherical member, reduces the force per unit area of the tensioning member 20, and facilitates mutual pressing between the tensioning member 20 and the spherical member, making the tensioning member 20 less prone to damage.
[0069] Understandably, the number of spherical grooves 241 is the same as the number of spherical parts, with each spherical part corresponding to one spherical groove 241.
[0070] In some embodiments, the tensioning part 21 is needle-shaped, with one end connected to the tensioning body 24 and the other end extending out of the installation space 111 to drive the part 300 to adjust its position.
[0071] Please see Figure 3 and Figure 5 In some embodiments, the expansion member 40 includes an expansion portion 41 having opposing first ends 411 and second ends 412. The cross-sectional shape of the first end 411 is the same as that of the second end 412; along the direction from the second end 412 toward the first end 411, the outer contour of the expansion portion 41 gradually narrows toward the central axis L of the expansion portion 41. For example, the expansion portion 41 is generally frustum-shaped.
[0072] The outer contour of the first end 411 is smaller than the outer contour of the second end 412, so the first end 411 can be inserted into the expansion space 22 first, which makes it easier for the entire expansion part 41 to be inserted into the expansion space 22. As the expansion part 41 gradually extends into the expansion space 22, the expansion space 22 gradually becomes larger, and the tensioning member 20 is moved by the push of the expansion part 41, thereby realizing the movement of the tensioning member 20 away from the central axis L.
[0073] Please see Figure 3 and Figure 5 In some embodiments, the expansion member 40 includes a mounting portion 42 connected to the second end 412. The mounting portion 42 is used to connect to a robotic arm to facilitate automated control of the alignment device 100.
[0074] Please see Figure 3 and Figure 5 In some embodiments, the tensioning member 20 has a mating surface 242 on the side facing the central axis L of the support assembly 10, and the mating surfaces 242 of at least two tensioning members 20 are used to enclose and form the expansion space 22. For example, the mating surface 242 is provided on the tensioning body 24. The shape of the mating surface 242 matches the outer peripheral surface of the expansion portion 41, and when the expansion portion 41 extends into the expansion space 22 along the first direction X, the mating surface 242 fits against the outer peripheral surface of the expansion portion 41. For example, when the expansion portion 41 is generally frustum-shaped, the outer peripheral surface of the expansion portion 41 is an arc surface, and the mating surface 242 is also an arc surface.
[0075] By matching and fitting the outer peripheral surface shape of the mating surface 242 with that of the outer expansion portion 41, the expansion portion can be guided to enter the expansion space 22 along the first direction X, improving the smoothness of the expansion portion entering the expansion space 22. On the other hand, the contact area between the outer expansion portion 41 and the mating surface 242 can be increased, that is, the area on which the outer expansion portion 41 applies force to the tensioning member 20 can be increased, reducing the force per unit area of the mating surface 242, making the tensioning member 20 less prone to wear.
[0076] In some embodiments, two parts 300 need to be stacked and locked onto the product 200, the two parts 300 being a first part 301 and a second part 302. Each part 300 has a through hole 303, and the through holes 303 on each part 300 are the same in size and shape, both being circular.
[0077] like Figure 6 As shown, after the first part 301 and the second part 302 are stacked, there is a misalignment between the two through holes 303. By extending the tensioning member 20 into the overlapping portion of the two through holes 303, and then the expanding member 40 pressing against at least two tensioning members 20, the at least two tensioning members 20 expand outward, as shown. Figure 7 As shown, the two parts 300 are corrected until at least two tensioning parts 21 simultaneously contact the inner wall of the through hole 303.
[0078] In some embodiments, the outer diameter of the concentric circle where at least two tensioning parts 21 are close to each other is 1 mm. The inner diameter of the through holes 303 of the first part 301 and the second part 302 is 2 mm, and the overlapping portion of the two through holes 303 after stacking can only allow locking members 400 with a diameter of 1 mm to 1.2 mm to pass through. However, the actual diameter of the locking member 400 is 1.8 mm, so the uncorrected locking member 400 cannot directly pass through the through holes 303 of the two parts 300. When the alignment device 100 is used for correction, at least two tensioning parts 21 are inserted into the overlapping portion of the two through holes 303. The tensioning parts 21 are expanded outward by the action of the expansion part 41 until the outer diameter of the concentric circle where at least two tensioning parts 21 are moved is 2 mm, thus achieving the correction of the position of the part 300. At this time, the through holes 303 of the first part 301 and the second part 302 are basically completely overlapped, improving the positional accuracy of the stacked two parts 300.
[0079] In some embodiments, the through holes 303 of the first part 301 and the second part 302 are of different sizes. When at least two tensioning parts 21 simultaneously contact the inner wall of the through hole 303 with the smaller inner diameter, the two parts 300 are corrected for misalignment. For example, if the inner diameter of the first through hole 303 is 2.2 mm and the inner diameter of the second through hole 303 is 2.0 mm, then when at least two tensioning parts 21 simultaneously contact the inner wall of the second through hole 303, the two parts 300 are corrected for misalignment.
[0080] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.
Claims
1. An alignment device, characterized in that, include: A support component has an installation space within it. The direction of the central axis of the support component is defined as a first direction. The installation space extends through the support component along the first direction. The support component has a first connecting hole that extends in a direction perpendicular to the central axis and connects to the installation space. At least two tensioning members are evenly distributed around the central axis and disposed in the mounting space. The tensioning members are movably engaged with the support assembly so that the at least two tensioning members move closer to or further away from each other in a direction toward or away from the central axis. Each tensioning member includes a tensioning portion that extends out of the mounting space along the first direction. An expansion space is formed between the at least two tensioning members. An elastic element, which is sleeved outside the support assembly; The elastic element is configured to press against the tensioning element via the first connecting hole, so that the at least two tensioning elements are brought closer to each other; An expansion member is configured to push the tensioning member by extending into the expansion space, so that the at least two tensioning members are moved away from each other and press against the elastic member in a direction away from the central axis.
2. The alignment device as described in claim 1, characterized in that, The support assembly includes a support member and a guide member. The support member has the installation space inside. The guide member is disposed in the installation space and coaxially disposed with the support member. The guide member is configured to guide and cooperate with the tensioning member to guide the movement of the tensioning member. The guide member has a second connecting hole that penetrates the guide member along the first direction. The tensioning member extends out of the installation space through the second connecting hole.
3. The alignment device as described in claim 2, characterized in that, The guide member includes at least two first guide portions, and the tensioning member includes a second guide portion. The first guide portions and the second guide portions correspond one-to-one and are movably engaged. The extension direction of each first guide portion intersects with the first direction, and the extension direction of each second guide portion is the same as the extension direction of the corresponding first portion.
4. The alignment device as described in claim 3, characterized in that, The guide includes a guide body, the guide body is provided with a second connecting hole, the first guide part is disposed on the guide body, and a portion of the tensioning member is disposed on the guide body and supported by the guide body.
5. The alignment device as described in claim 2, characterized in that, The outer peripheral wall of the support member is provided with an annular groove, which communicates with the first connecting hole, and the elastic member is disposed in the annular groove.
6. The alignment device as described in claim 1, characterized in that, The alignment device includes at least two pushing members, and at least two first connecting holes are provided. Each pushing member corresponds to one tensioning member and one first connecting hole. The pushing member is movably disposed in the corresponding first connecting hole, and a portion of the pushing member extends out of the first connecting hole. The elastic member presses against the tensioning member through the pushing member.
7. The alignment device as described in claim 6, characterized in that, The pusher is a spherical component.
8. The alignment device as described in claim 7, characterized in that, The tensioning member is provided with a spherical groove, the inner wall of which matches the shape of the outer circumferential surface of the spherical member.
9. The alignment device as described in claim 1, characterized in that, The expansion member includes an expansion portion having a first end and a second end opposite to each other; the cross-sectional shape of the first end is the same as the cross-sectional shape of the second end; along the direction from the second end toward the first end, the outer contour of the expansion portion gradually narrows toward the central axis of the expansion portion.
10. The alignment device as described in claim 9, characterized in that, The tensioning member has a mating surface on the side facing the central axis of the support assembly, and the mating surfaces of the at least two tensioning members are used to enclose and form the expansion space; the shape of the mating surface matches the outer peripheral surface of the expansion portion, and when the expansion portion extends into the expansion space along the first direction, the mating surface fits against the outer peripheral surface of the expansion portion.