Assembling precision control device for special-shaped eccentric product and assembling method

Abstract

The invention provides a special-shaped eccentric product assembly precision control device which comprises a shell and a conical body, the two ends of the shell are open, the interior of the shell is hollow, a conical head is arranged at one end of the conical body, and the special-shaped eccentric product assembly precision control device comprises a guiding piece and a positioning assembly; wherein the guide piece is arranged at one end of the shell, two ends of the guide piece are open, a through hole is formed between the two ends in a penetrating manner, and the inner diameter of the through hole is gradually reduced from one end close to the shell to the other end; the positioning assembly is connected with the conical body, and the positioning assembly is arranged on the shell in a penetrating manner; according to the assembly precision control device for the special-shaped eccentric product, the conical head of the conical body is guided to slide through the guiding piece till the center of the conical body coincides with the assembly center, and meanwhile the movement direction of the conical body is limited through the positioning assembly so that relative rotation and / or relative swing of the conical body and the shell can be avoided.

Description

Technical Field

[0001] The present application belongs to the field of assembly technology, and in particular relates to an assembly precision control device and an assembly method for special-shaped eccentric products. Background Art

[0002] The special-shaped eccentric product includes a shell and a cone. The shell is open at both ends and hollow inside, and a conical head is provided at one end of the cone. Based on market demand, the shell shape is fitted with an irregular curve, and the shell is equipped with a cone. It is required that the center of the assembled cone should be the assembly center of the special-shaped eccentric product. A coordinate system is established based on one end face of the shell, and the shell and the cone need to be aligned in each quadrant area.

[0003] However, the shell has a multi-center structure. Usually, the center of the shell is inconsistent with the assembly center of the special-shaped eccentric product. It is a spatial dimension and cannot be accurately adjusted to the assembly center during the assembly process, resulting in inaccurate product precision and large product center of mass offset, which cannot meet the design requirements. In the actual assembly process, the cone will inevitably shake and rotate, and the shell and the cone cannot be aligned in each quadrant area. The cone needs to be lifted multiple times to align with the assembly center. This method is inefficient, costly, risky and has low accuracy. Summary of the invention

[0004] In response to the shortcomings in the related technology, the present application provides a device and method for controlling the assembly accuracy of special-shaped eccentric products, wherein a guide member is used to guide the conical head of the cone to slide until the center of the cone coincides with the assembly center. At the same time, a positioning assembly is used to limit the movement direction of the cone to avoid relative rotation and / or relative swinging between the cone and the shell.

[0005] On the one hand, the present application provides an assembly precision control device and an assembly method for a special-shaped eccentric product, wherein the special-shaped eccentric product comprises a shell and a cone, wherein both ends of the shell are open and the interior is hollow, and one end of the cone is provided with a conical head, and the assembly precision control device for a special-shaped eccentric product comprises:

[0006] A guide member, the guide member is arranged at one end of the shell, the guide member is open at both ends and a through hole is formed between the two ends, the inner diameter of the through hole gradually decreases from one end close to the shell to the other end, and the guide member is used to guide the conical head to slide through the through hole until the center of the cone coincides with the assembly center;

[0007] A positioning assembly is connected to the cone and is passed through the shell. The positioning assembly is used to ensure that there is at least one relative positioning point between the cone and the shell, thereby avoiding relative rotation and / or relative swing between the cone and the shell.

[0008] In some embodiments, the guide further comprises:

[0009] A connecting portion, the outer diameter of which is not greater than the inner diameter of the shell, and the connecting portion is used to connect with the shell;

[0010] A stabilizing portion, wherein the outer diameter of the stabilizing portion is not less than the inner diameter of the shell, the stabilizing portion is connected to the connecting portion, the through hole is penetrated through the stabilizing portion and the connecting portion, the inner diameter of the through hole gradually decreases from the connecting portion to the stabilizing portion, and the maximum inner diameter of the through hole is not greater than the maximum outer diameter of the conical head.

[0011] In some embodiments, the housing and the connecting portion are provided with a plurality of corresponding connecting holes, and the device for controlling the assembly accuracy of special-shaped eccentric products further comprises:

[0012] A fastener is inserted into the connecting holes on the shell and the connecting portion to fix the relative positions of the shell and the connecting portion.

[0013] In some embodiments, the positioning assembly includes:

[0014] A carrier, the carrier being arranged at the other end of the cone body relative to the conical head, the carrier being detachably connected to the cone body;

[0015] A positioning rod is provided on the carrier and the shell. The positioning rod passes through the carrier so that the cone and the shell have at least one relative positioning point, thereby preventing the cone and the shell from rotating relative to each other.

[0016] In some embodiments, the positioning component further comprises:

[0017] A connecting piece, the connecting piece is arranged in the housing, and the connecting piece is threadedly connected to the positioning rod;

[0018] Two rotating plates, the two rotating plates are arranged on the connecting member so as to cross and rotate based on a rotating point;

[0019] When the positioning rod rotates relative to the connecting member, the positioning rod pushes the two rotating plates along its axial direction at the same time, and the angle between the two rotating plates increases accordingly, so that one end of the positioning rod is fixed in the shell.

[0020] In some embodiments, the positioning component further comprises:

[0021] An elastic member is connected to the two rotating plates, and the elastic member is located at the other side of the rotating point relative to the positioning rod.

[0022] In some embodiments, the positioning component further comprises:

[0023] A stopper is sleeved on the positioning rod and is used to press the carrier and the shell tightly.

[0024] In some embodiments, an adapter is provided at one end of the positioning rod which is relatively far away from the housing.

[0025] In some embodiments, the device for controlling the assembly accuracy of special-shaped eccentric products further comprises:

[0026] A hoisting hole is provided on the carrier, and the hoisting hole is used to connect a hoisting device so that the hoisting device can hoist the cone through the carrier for assembly.

[0027] On the other hand, an assembly method is also provided, which is performed using the assembly precision control device for special-shaped eccentric products according to any one of claims 1 to 9, comprising:

[0028] A preparation step, connecting the positioning assembly to the cone, lifting the cone by a lifting device, and installing the guide and the positioning assembly at two ends of the shell relative to each other;

[0029] An assembly step, wherein the cone is installed into the housing along the axial direction of the cone based on the limitation of the positioning assembly, and the cone center of the cone is made to coincide with the assembly center based on the guidance of the guide member;

[0030] In the disassembly step, the positioning assembly is removed after the cone is installed in the shell, and the guide is removed after the relative positions of the shell and the cone are fixed, thereby completing the assembly.

[0031] In summary, the present application provides a device and method for controlling the assembly accuracy of special-shaped eccentric products, wherein a guide member is used to guide the conical head of the cone to slide until the center of the cone coincides with the assembly center, and a positioning assembly is used to limit the movement direction of the cone to avoid relative rotation and / or relative swing between the cone and the shell; the positioning rod is quickly installed or removed from the shell through the cooperation of the positioning rod, the connecting member and the two rotating plates; the elastic member is used to quickly reset the two rotating plates, so as to facilitate the rapid removal of the positioning rod from the outside of the shell.

[0032] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description in the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 This is a stereoscopic diagram of the device for controlling the assembly precision of special-shaped eccentric products used in the present application during assembly;

[0035] Figure 2 This is the main view of the device for controlling the assembly precision of special-shaped eccentric products used in this application during assembly;

[0036] Figure 3 This is a top view of the device for controlling the assembly precision of special-shaped eccentric products used in the present application during assembly;

[0037] Figure 4 This application is used for the precision control device of assembling special-shaped eccentric products Figure 3 AA cross-section diagram;

[0038] Figure 5 A three-dimensional diagram of a guide member of the assembly precision control device for special-shaped eccentric products in the present application;

[0039] Figure 6 This is a connection diagram of the positioning rod of the assembly precision control device for special-shaped eccentric products used in this application;

[0040] Figure 7 This is a general flow chart of the assembly method of the device for controlling the assembly accuracy of special-shaped eccentric products used in this application.

[0041] In the figure:

[0042] 100, shell; 200, cone; 300, guide; 301, connecting part; 302, stabilizing part; 400, positioning assembly; 401, carrier; 402, positioning rod; 403, connecting part; 404, rotating plate; 405, elastic part; 406, stopper. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] In the description of the present application, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. Specific embodiment 1

[0048] Reference Figures 1 to 7 , Figure 1 This is a stereoscopic diagram of the device for controlling the assembly precision of special-shaped eccentric products used in the present application during assembly; Figure 2 This is the main view of the device for controlling the assembly precision of special-shaped eccentric products used in this application during assembly; Figure 3 This is a top view of the device for controlling the assembly precision of special-shaped eccentric products used in the present application during assembly; Figure 4 This application is used for the precision control device of assembling special-shaped eccentric products Figure 3 AA cross-section diagram; Figure 5 A three-dimensional diagram of a guide member 300 used in the device for controlling the assembly accuracy of special-shaped eccentric products of the present application; Figure 6 This is a connection diagram of the positioning rod 402 used in the assembly precision control device for special-shaped eccentric products of the present application; Figure 7 This is a general flow chart of the assembly method of the device for controlling the assembly accuracy of special-shaped eccentric products in the present application; the specific embodiments are described below in conjunction with the above-mentioned drawings.

[0049] Reference Figures 1 to 4The present application provides a device for controlling the assembly precision of a special-shaped eccentric product. The special-shaped eccentric product includes a shell 100 and a cone 200. The shell 100 is open at both ends and hollow inside. A conical head is provided at one end of the cone 200. The device for controlling the assembly precision of a special-shaped eccentric product includes a guide 300 and a positioning assembly 400; wherein the guide 300 is provided at one end of the shell 100, the guide 300 is open at both ends and a through hole is passed through the two ends, the inner diameter of the through hole gradually decreases from one end close to the shell 100 to the other end, the guide 300 is used to guide the conical head to slide through the through hole until the center of the cone 200 coincides with the assembly center; the positioning assembly 400 is connected to the cone 200, and the positioning assembly 400 is passed through the shell 100, and the positioning assembly 400 is used to make the cone 200 and the shell 100 have at least one relative positioning point, thereby avoiding the relative rotation and / or relative swing of the cone 200 and the shell 100.

[0050] Reference Figure 5 In some embodiments, the guide member 300 further includes a connecting portion 301 and a stabilizing portion 302; wherein, the outer diameter of the connecting portion 301 is not greater than the inner diameter of the shell 100, and the connecting portion 301 is used to connect with the shell 100; the outer diameter of the stabilizing portion 302 is not less than the inner diameter of the shell 100, the stabilizing portion 302 is connected to the connecting portion 301, and a through hole is penetrated in the stabilizing portion 302 and the connecting portion 301, and the inner diameter of the through hole gradually decreases from the connecting portion 301 to the stabilizing portion 302, and the maximum inner diameter of the through hole is not greater than the maximum outer diameter of the conical head.

[0051] Specifically, the outer diameter shape of the connecting portion 301 matches the inner diameter shape of the shell 100, and the size of the inner diameter of the connecting portion 301 depends on the inner diameter of the through hole, and is always no larger than the maximum outer diameter of the conical head, so that the conical head of the cone 200 cannot completely pass through the connecting portion 301; one end of the connecting portion 301 is connected to the stabilizing portion 302, and the outer diameter of the stabilizing portion 302 is larger than the outer diameter of the connecting portion 301 to form a step structure, and the step structure is used to abut against one end of the shell 100, so as to stabilize the relative position of the guide member 300 and the shell 100; the through hole is penetrated in the stabilizing portion 302 and the connecting portion 301, and the inner diameter of the through hole gradually decreases from the connecting portion 301 to the stabilizing portion 302, and is used to guide the conical head of the cone 200 to slide to the assembly center, so that the center of the cone 200 coincides with the assembly center, thereby meeting the assembly requirements.

[0052] It should be noted that the definition of the assembly center is the ideal center point required in the product assembly process, which is the benchmark for all related components or parts to be aligned and positioned during assembly; in fact, the assembly center is the key position to ensure that the various components can be correctly and accurately connected and combined together; and the special-shaped eccentric products that need to be assembled in this application, because the shell 100 is designed to fit an irregular curve based on market demand, the center of the shell 100 is not consistent with the assembly center; the present application directly guides the center of the cone 200 to coincide with the assembly center through the guide 300, thereby avoiding the need to lift the cone 200 multiple times to align with the assembly center during the assembly process, thereby improving the assembly efficiency and assembly accuracy.

[0053] In some embodiments, a plurality of corresponding connection holes are formed on the shell 100 and the connection portion 301 , and fasteners are formed in the connection holes on the shell 100 and the connection portion 301 to fix the relative positions of the shell 100 and the connection portion 301 .

[0054] Specifically, the fasteners include but are not limited to screws, bolts and latches, and the fasteners are used to prevent the housing 100 and the connecting portion 301 from moving relative to each other, thereby ensuring that the guide 300 and the housing 100 are relatively stable during the assembly process, thereby improving the assembly accuracy.

[0055] Reference Figures 1 to 4 In some embodiments, the positioning assembly 400 includes a carrier 401 and a positioning rod 402; wherein, the carrier 401 is arranged at the other end of the cone 200 relative to the conical head, the carrier 401 and the cone 200 are detachably connected, the positioning rod 402 is passed through the carrier 401 and the shell 100, and the positioning rod 402 passes through the carrier 401 to ensure that there is at least one relative positioning point between the cone 200 and the shell 100, thereby preventing the cone 200 and the shell 100 from rotating relative to each other; a lifting hole is arranged on the carrier 401, and the lifting hole is used to connect a lifting device so that the lifting device lifts the cone 200 through the carrier 401 for assembly.

[0056] Specifically, the carrier 401 is provided with a fixing hole, a first auxiliary hole and a lifting hole; wherein, the fixing hole is used to connect and fix the cone 200, the first auxiliary hole is used to assist in positioning, and the lifting hole is used to connect a lifting device so that the lifting device can lift the cone 200 through the carrier 401 for assembly.

[0057] Reference Figure 1 and Figure 4In some embodiments, a second auxiliary hole corresponding to the first auxiliary hole is formed on the shell 100, and the positioning rod 402 is formed in the first auxiliary hole and the second auxiliary hole, so that there is at least one relative positioning point between the cone 200 and the shell 100, that is, when the cone 200 is installed into the shell 100, the cone 200 can only move into the shell 100 along the axial direction of the cone 200, thereby preventing the cone 200 from swinging relative to the shell 100 and / or rotating relative to the shell 100.

[0058] Reference Figure 1 , Figure 4 as well as Figure 6 In some embodiments, the positioning assembly 400 also includes a connecting member 403 and two rotating plates 404, wherein the connecting member 403 is disposed in the shell 100, and the connecting member 403 is threadedly connected to the positioning rod 402; the two rotating plates 404 are arranged on the connecting member 403 based on a rotating point and cross-rotate; when the positioning rod 402 rotates relative to the connecting member 403, the positioning rod 402 simultaneously pushes the two rotating plates 404 along its axial direction, and the angle between the two rotating plates 404 increases accordingly, so that one end of the positioning rod 402 is fixed in the shell 100.

[0059] Specifically, the connecting member 403 is arranged at one end of the positioning rod 402, and the connecting member 403 is provided with an internal thread. The positioning rod 402 is threadedly connected to the connecting member 403, and the two rotating plates 404 are arranged on the connecting member 403 based on a pivot point and cross-rotate. After the positioning rod 402 drives the connecting member 403 and the two rotating plates 404 to pass through the first auxiliary hole and the second auxiliary hole and enter the shell 100, as the positioning rod 402 is relatively screwed into the connecting member 403, the positioning rod 402 pushes the two rotating plates 404 to rotate relatively and open along its axial direction, and the angle between the two rotating plates 404 increases accordingly. After the two rotating plates 404 abut against the inner wall of the shell 100, one end of the positioning rod 402 is fixed in the shell 100.

[0060] In some embodiments, an adapter is provided at one end of the positioning rod 402 that is relatively far away from the shell 100. The adapter includes but is not limited to a square head, a hexagonal head, an octagonal head and a star head. The adapter is used to connect a corresponding wrench part to facilitate the operator to rotate the positioning rod 402 outside the shell 100 using the wrench part.

[0061] Reference Figure 6In some embodiments, bosses are respectively provided on the two rotating plates 404, and the positioning assembly 400 also includes an elastic member 405, which is connected to the two rotating plates 404 through the bosses. The elastic member 405 is located on the other side of the turning point relative to the positioning rod 402, and the elastic member 405 includes but is not limited to a spring, a compression spring and rubber; as the positioning rod 402 is relatively rotated out of the connecting member 403, the elastic member 405 pulls the two rotating plates 404 to rotate relative to each other and reset, and the angle between the two rotating plates 404 decreases accordingly. After the angle between the two rotating plates 404 is reduced to a preset angle, the fixing restriction on the positioning rod 402 and the shell 100 is released, and the positioning rod 402 can be taken out from the shell 100 through the second auxiliary hole and the first auxiliary hole, thereby improving the disassembly efficiency.

[0062] Reference Figure 1 and Figure 4 In some embodiments, the positioning assembly 400 further includes a stopper 406 , which is sleeved on the positioning rod 402 , and is used to press the carrier 401 and the housing 100 together.

[0063] Specifically, after the positioning rod 402 is installed in the shell 100 and the two rotating frames are opened, the stopper 406 is pressed into the first auxiliary hole to fill the gap between the positioning rod 402 and the first auxiliary hole, and the positioning rod 402 is pressed against the inner wall of the shell 100 to further fix the positioning rod 402. Specific embodiment 2

[0065] Reference Figure 7 The present application also provides a control method, which uses the assembly precision control device for special-shaped eccentric products in the above-mentioned specific embodiment 1 for assembly, including a preparation step S1, an assembly step S2 and a disassembly step S3.

[0066] In some embodiments, the preparation step S1 includes connecting the positioning assembly 400 to the cone 200 , lifting the cone 200 by a lifting device, and installing the guide 300 and the positioning assembly 400 at two ends of the housing 100 opposite to each other.

[0067] Specifically, the carrier 401 is fixedly connected to the end of the cone 200 away from the conical head; the guide 300 is installed at the end of the shell 100 with a smaller opening, and the guide 300 is connected and fixed to the shell 100 by fasteners, so that the shell 100 is placed above the guide 300; the cone 200 is lifted to the end of the shell 100 with a larger opening by a lifting device, and a coordinate system is established based on a plane perpendicular to the axial direction of the cone 200 to divide the corresponding quadrants of the cone 200 and the shell 100, and the rough step is aligned. After the quadrants are aligned, the positioning rod 402, the connecting piece 403 and the two rotating plates 404 are passed through the carrier 401 and the shell 100 through the first auxiliary hole and the second auxiliary hole. The positioning rod 402 is rotated relative to the connecting piece 403 to push the two rotating plates 404 to open, and the angle between the two rotating plates 404 increases until the two rotating plates 404 abut against the inner wall of the shell 100. The stopper 406 is pressed into the first auxiliary hole to tighten the positioning rod 402 against the inner wall of the shell 100, thereby fixing the positioning rod 402 on the shell 100.

[0068] It should be noted that the end of the shell 100 with a larger opening is usually the end where the cone 200 enters the shell 100. Relatively speaking, the end of the shell 100 with a smaller opening is usually the end where the conical head of the cone 200 extends out of the shell 100. In the actual assembly process, the end where the cone 200 enters the shell 100 and the end where the conical head extends out of the shell 100 should be selected according to actual conditions, and it is not necessary to compare the sizes of the opening of the shell 100 to make a selection.

[0069] In some embodiments, the assembly step S2 includes installing the cone 200 into the housing 100 along the axial direction of the cone 200 based on the limitation of the positioning assembly 400 , and making the center of the cone 200 coincide with the assembly center based on the guidance of the guide 300 .

[0070] Specifically, the lifting equipment controls the cone 200 to be lowered into the shell 100. The cone 200 is installed into the shell 100 along the axial direction of the cone 200 based on the limitation of the positioning rod 402, so as to avoid the cone 200 swinging or rotating relative to the shell 100 during the installation process, so that the corresponding quadrants are accurately aligned; at the same time, based on the guide 300, the cone head of the cone 200 is guided to slide to a preset position, so that the center of the cone 200 of the cone 200 coincides with the assembly center. After the end face of the carrier 401 is flush with the end face of the shell 100, the operation of installing the cone 200 into the shell 100 is completed.

[0071] In some embodiments, the disassembly step S3 includes removing the positioning assembly 400 after the cone 200 is installed in the shell 100, and removing the guide 300 after fixing the relative position of the shell 100 and the cone 200, thereby completing the assembly.

[0072] Specifically, after the cone 200 is installed into the shell 100, the stopper 406 is taken out from the first auxiliary hole, and the positioning rod 402 is rotated relative to the connecting member 403 to be screwed out. The elastic member 405 pulls the two rotating plates 404 to close and reset, and the angle between the two rotating plates 404 is reduced until the restriction of the positioning rod 402 by the two rotating plates 404 along its axial direction is released, and the positioning rod 402 can be taken out; after the connection between the carrier 401 and the cone 200 is released and the carrier 401 is removed, wait until the relative position of the cone 200 and the shell 100 is fixed, and then the shell 100 is tilted to take out the guide member 300 at its bottom, thereby completing the assembly.

[0073] The present application provides an assembly precision control device and assembly method for special-shaped eccentric products, wherein the conical head of the cone 200 is guided to slide by a guide member 300 until the center of the cone 200 coincides with the assembly center, and the movement direction of the cone 200 is limited by a positioning assembly 400 to avoid relative rotation and / or relative swing between the cone 200 and the shell 100; the positioning rod 402, the connecting member 403 and the two rotating plates 404 are cooperated to quickly install or remove the positioning rod 402 from the shell 100; the two rotating plates 404 are quickly reset by an elastic member 405, so as to facilitate the rapid removal of the positioning rod 402 from the outside of the shell 100.

[0074] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0075] The above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present application, which should be included in the scope of the technical solution requested for protection in the present application.

Claims

1. A device for controlling the assembly accuracy of a special-shaped eccentric product, wherein the special-shaped eccentric product comprises a shell and a cone, wherein both ends of the shell are open and the interior is hollow, and one end of the cone is provided with a conical head, wherein: The device for controlling the assembly accuracy of special-shaped eccentric products comprises: A guide member, the guide member is arranged at one end of the shell, the guide member is open at both ends and a through hole is formed between the two ends, the inner diameter of the through hole gradually decreases from one end close to the shell to the other end, and the guide member is used to guide the conical head to slide through the through hole until the center of the cone coincides with the assembly center; A positioning assembly is connected to the cone and is passed through the shell. The positioning assembly is used to ensure that there is at least one relative positioning point between the cone and the shell, thereby avoiding relative rotation and / or relative swing between the cone and the shell.

2. The device for controlling the assembly precision of special-shaped eccentric products according to claim 1 is characterized in that: The guide further comprises: A connecting portion, the outer diameter of which is not greater than the inner diameter of the shell, and the connecting portion is used to connect with the shell; A stabilizing portion, wherein the outer diameter of the stabilizing portion is not less than the inner diameter of the shell, the stabilizing portion is connected to the connecting portion, the through hole is penetrated through the stabilizing portion and the connecting portion, the inner diameter of the through hole gradually decreases from the connecting portion to the stabilizing portion, and the maximum inner diameter of the through hole is not greater than the maximum outer diameter of the conical head.

3. The device for controlling the assembly precision of special-shaped eccentric products according to claim 2 is characterized in that: The housing and the connecting portion are provided with a plurality of corresponding connecting holes, and the device for controlling the assembly accuracy of special-shaped eccentric products further comprises: A fastener is inserted into the connecting holes on the shell and the connecting portion to fix the relative positions of the shell and the connecting portion.

4. The device for controlling the assembly precision of special-shaped eccentric products according to claim 1, characterized in that: The positioning component comprises: A carrier, the carrier being arranged at the other end of the cone body relative to the conical head, the carrier being detachably connected to the cone body; A positioning rod is provided on the carrier and the shell. The positioning rod passes through the carrier so that the cone and the shell have at least one relative positioning point, thereby preventing the cone and the shell from rotating relative to each other.

5. The device for controlling the assembly precision of special-shaped eccentric products according to claim 4 is characterized in that: The positioning component also includes: A connecting piece, the connecting piece is arranged in the housing, and the connecting piece is threadedly connected to the positioning rod; Two rotating plates, the two rotating plates are arranged on the connecting member so as to cross and rotate based on a rotating point; When the positioning rod rotates relative to the connecting member, the positioning rod pushes the two rotating plates along its axial direction at the same time, and the angle between the two rotating plates increases accordingly, so that one end of the positioning rod is fixed in the shell.

6. The device for controlling the assembly precision of special-shaped eccentric products according to claim 5, characterized in that: The positioning component also includes: An elastic member is connected to the two rotating plates, and the elastic member is located at the other side of the rotating point relative to the positioning rod.

7. The device for controlling the assembly accuracy of special-shaped eccentric products according to claim 4, characterized in that: The positioning component also includes: A stopper is sleeved on the positioning rod and is used to press the carrier and the shell tightly.

8. The device for controlling the assembly precision of special-shaped eccentric products according to claim 4, characterized in that: An adapter is provided at one end of the positioning rod which is relatively far away from the housing.

9. The device for controlling the assembly precision of special-shaped eccentric products according to claim 4, characterized in that: Also includes: A hoisting hole is provided on the carrier, and the hoisting hole is used to connect a hoisting device so that the hoisting device can hoist the cone through the carrier for assembly.

10. An assembly method, using a device for controlling the assembly accuracy of special-shaped eccentric products, characterized in that: include: A preparation step, connecting the positioning assembly to the cone, lifting the cone by a lifting device, and installing the guide and the positioning assembly at two ends of the shell relative to each other; An assembly step, wherein the cone is installed into the housing along the axial direction of the cone based on the limitation of the positioning assembly, and the cone center of the cone is made to coincide with the assembly center based on the guidance of the guide member; In the disassembly step, the positioning assembly is removed after the cone is installed in the shell, and the guide is removed after the relative positions of the shell and the cone are fixed, thereby completing the assembly.

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