Structure for compensating assembly and precision errors

Abstract

The utility model relates to the technical field of automobile assembly, and discloses a structure for compensating assembly and precision errors, which is used for adjusting a gap between an assembly surface and an assembly part and comprises an adjusting pin, one end of the adjusting pin abuts against the assembly surface, and the other end of the adjusting pin is in threaded connection with an adjusting ring. The adjusting ring is rotationally arranged on the assembly part and can drive the adjusting pin and the assembly part to move in the radial direction through rotation. Through an adjusting mechanism, the position and angle of an assembly part are dynamically adjusted in the assembly process, machining errors or material deformation is compensated, the assembly precision is improved, and it is ensured that the assembly runs in the optimal state. Through the synergistic effect of the adjusting pin and the adjusting ring, rotary motion is converted into linear motion, assembly surface damage is reduced, product stability is enhanced, performance fluctuation is reduced, reliability is improved, the service life is prolonged, and market advantages are given to products.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile assembly, in particular to a structure for compensating assembly and precision error. BACKGROUND

[0002] In the automobile assembly process, some parts exist fluctuation in X, Y and Z directions, even if the body fixed groove exists certain tolerance, but due to the random inconsistency of fluctuation direction, lead to the assembly gap is larger to affect the product texture, for example, the assembly of pipe beam, the pipe beam mounting point of multiple vehicle models exists fluctuation in X, Y and Z directions. The body tolerance is ± 2mm, lead to the pipe beam installation will encounter interference and large assembly gap. After installation, the instrument panel cannot be arranged in the middle relative to the inside of the vehicle, according to the fluctuation of the size chain cooperation result, generally the left and right of the instrument panel, the gap of both sides will be between 2-6mm, seriously affect the product quality control, thereby reduce the customer reputation, and further reduce the competitive advantage of the product, and setting up independent assembly line for each product will undoubtedly increase the production cost, also reduce the competitive advantage of the product. CONTENT OF THE UTILITY MODEL

[0003] The utility model intends to provide a structure for compensating assembly and precision error, to improve the assembly precision of the product, thereby improve the quality of the product, and further improve the competitive advantage of the product.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme: a structure for compensating assembly and precision error is used for adjusting the gap between assembly surface and assembly part, including adjusting pin, the one end of adjusting pin is opposite to assembly surface, the other end is screw thread connection with adjusting ring, adjusting ring is rotationally arranged on assembly part and can drive adjusting pin and assembly part to move radially through rotation.

[0005] The beneficial effects of the scheme are: through the adjusting mechanism, the position and angle of the assembly part are dynamically adjusted in the assembly process, the assembly inaccuracy problem caused by machining error or material deformation is effectively compensated, thereby the overall assembly precision of the product is significantly improved, and it is ensured that each component can operate in the best state. In addition, due to the synergistic effect of adjusting pin and adjusting ring, the rotary motion of adjusting ring is converted into the linear motion of adjusting pin, the damage to the assembly surface is reduced, the stability of the product after long time use is also enhanced, the performance fluctuation possibly caused by the change of use environment is reduced. The reliability and service life of the product are improved, and the product is also given greater advantage in market competition.

[0006] Further, it further includes fixed disc, adjusting pin and adjusting ring are rotationally arranged on the fixed disc, and the fixed disc is fixedly connected with the assembly part.

[0007] Further, the outer fixing of the fixing disc is provided with a shell, and the shell is provided with an opening capable of controlling the rotation of the adjusting ring. Through this design, the operation of the adjusting ring is more convenient, and the device can be quickly adjusted to improve work efficiency.

[0008] Further, the opening is provided with a stop block located in the radial direction of the movement of the limiting pin and capable of limiting the extreme position of the movement of the adjusting pin. This design ensures that the adjusting pin will not exceed the preset range during movement, thereby improving the stability and safety of the device.

[0009] Further, the free end of the adjusting ring is provided with a hexagonal adjusting part located outside the opening. This design facilitates the user to adjust when using tools, and manual adjustment is not required without special tools. The surface of the hexagonal adjusting part is finely processed to ensure that it will not slip or be damaged during adjustment, and its size and shape are optimized to meet the needs of different use scenarios.

[0010] Further, the fixing disc is provided with a fixing groove for fixing the to-be-assembled part. The design of the fixing groove takes into account the size and shape of different parts, has high universality, and the fixing disc can be connected with the assembled part by welding or high-strength bolts to ensure the firmness and reliability of the overall structure.

[0011] Further, the fixing groove is fixed with a fixing part, and the fixing disc is fixedly connected with the to-be-assembled part through the fixing part. The bottom of the adjusting ring is provided with an avoiding groove which is annular and matched with the fixing groove. This design not only ensures the stable connection between the parts, but also allows the adjusting ring to move freely in the fixing groove, thereby realizing flexible adaptation to different installation requirements. In the actual assembly process, by rotating the adjusting ring, the position of the to-be-assembled part can be fine-tuned to accurately align the installation site, which not only improves the convenience and efficiency of assembly, but also enhances the stability and reliability of the entire structure.

[0012] Furthermore, it also includes fasteners, which are placed between the mounting surface and the assembly and threadedly connect the mounting surface and the assembly. Traditional fasteners often only provide unidirectional tensile force, making it difficult to distribute stress evenly in multiple directions. This is particularly evident during long-term use or when subjected to vibration, as fasteners are prone to loosening, causing gaps between the assemblies and affecting the stability and safety of the overall structure. This solution applies tensile force to the mounting surface and the assembly using fasteners (such as bolts and nuts), ensuring a tight fit. Simultaneously, an adjusting pin contacts the mounting surface through its abutment end, and the adjusting pin moves linearly by rotating the adjusting ring, applying a pushing force to the mounting surface and the assembly. The combination of the tensile force applied by the fasteners and the pushing force applied by the adjusting pin forms a push-pull connection structure. This structure not only effectively prevents loosening between the assemblies but also distributes stress evenly in multiple directions, significantly improving the stability and vibration resistance of the overall structure, greatly reducing shaking and gaps after assembly, and ensuring that the assemblies maintain a good fit during long-term use. Attached Figure Description

[0013] Figure 1 This is an exploded view of Embodiment 1 of this utility model;

[0014] Figure 2 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0015] Figure 3 This is a cross-sectional view of Embodiment 2 of the present invention. Detailed Implementation

[0016] The following detailed description illustrates the specific implementation method:

[0017] The reference numerals in the accompanying drawings include: adjusting pin 1, first adjusting part 11, connecting part 12, abutting part 13, fixing plate 21, fixing groove 211, outer shell 22, stop block 23, adjusting ring 3, second adjusting part 31, rotating part 32, and clearance groove 321.

[0018] Example 1

[0019] Example 1 is basically as shown in the appendix. Figures 1-2 As shown, Figures 1-2 The diagram illustrates a structure for compensating for assembly and precision errors, used to adjust the gap between the assembly surface and the assembly part. It includes fasteners, mounting units, and adjustment units. The fasteners are disposed between the assembly surface and the assembly part, and threadedly connect the assembly surface and the assembly part. In this embodiment, the fasteners are bolts.

[0020] The mounting unit includes a fixing disc 21 and a shell 22. The outer diameter of the fixing disc 21 can be designed to be different sizes according to actual application requirements, and is usually between 30 mm and 100 mm. The thickness of the fixing disc 21 is generally 5 mm to 15 mm, ensuring sufficient rigidity and strength. A plurality of fixing grooves 211 are designed on the fixing disc 21 for fixed connection of the fixing disc 21 with the assembly part. The number and position of the fixing grooves 211 are determined according to actual requirements, and are usually two to six, uniformly distributed on the periphery of the fixing disc 21. In the embodiment, the number of the fixing grooves 211 is two. The width of the fixing grooves 211 is determined according to the specifications of the connecting bolts, and commonly used specifications are M4, M5, M6, etc. The side of the fixing disc 21 is provided with external threads, as shown in Figure 2 , the lower end of the shell 22 is threadedly connected with the side of the fixing disc 21, as shown in Figure 1 , and the upper part of the shell 22 is welded with a stop block 23.

[0021] The adjusting unit includes an adjusting pin 1 and an adjusting ring 3, as shown in Figure 2 , the adjusting pin 1 includes an integrally formed first adjusting part 11, a connecting part 12 and an abutting part 13. The first adjusting part 11 is arranged at the right end of the connecting part 12, and is used to control the rotation of the connecting part 12, so that the abutting part 13 abuts against the assembly surface. The side of the connecting part 12 is provided with external threads for threadedly connecting with the adjusting ring 3. In the embodiment, the external threads adopt standard metric threads with a pitch of 1.5 mm. This design makes the displacement of the adjusting pin 1 in the axial direction 1.5 mm per rotation of the adjusting ring 3, which is convenient for accurately controlling the adjustment amount. The free end of the abutting part 13 is a flat structure for abutting against the assembly surface.

[0022] The adjusting ring 3 is made of copper alloy and is carefully made. It not only has excellent self-lubricating performance, but also has excellent wear resistance. It includes an integrally formed rotating part 32 and a second adjusting part 31. The inner wall of the rotating part 32 is designed with internal threads matched with the external threads of the adjusting pin 1, so that the adjusting pin 1 is arranged inside the adjusting ring 3 and is threadedly connected with the adjusting ring 3 through the connecting part 12. It is ensured that the two can be closely combined to achieve precise adjustment. The outer wall of the rotating part 32 is designed in a cylindrical shape and cooperates with the shell 22, so that the adjusting ring 3 is arranged in a rotatable manner on the assembly part. By rotating the adjusting ring 3, the adjusting pin 1 is flexibly moved in the radial direction, thereby accurately adjusting the gap between the assembly surface and the assembly part.

[0023] The adjusting ring 3 is arranged in a rotatable manner inside the shell 22. During use, the rotation of the first adjusting part 11 or the second adjusting part 31 causes the adjusting pin 1 and the adjusting ring 3 to rotate relative to each other, thereby realizing the extension and retraction movement of the adjusting pin 1 in the adjusting ring 3. Such a design not only has a compact structure, but also is convenient to adjust and can meet the needs of various precise adjustments.

[0024] The specific implementation process is as follows:

[0025] Taking the assembly process of an automotive tube beam as an example, in use, firstly, the fixing plate 21 is welded to the clamping part on the side of the tube beam, and the clamping part is pre-assembled with the vehicle body using fasteners. Then, the outer shell 22 is threaded or welded to the fixing plate 21, so that the adjustment unit is rotatably mounted on the fixed chassis. During assembly, firstly, the rotation of the second adjustment part 31 is restricted by a wrench, and the adjustment pin 1 is rotated relative to the adjustment ring 3 by rotating the first adjustment part 11, so that the abutment part 13 moves away from the fixing plate 21 until the free end of the abutment part 13 abuts against the assembly surface on the side of the vehicle body. Then, the second adjustment part 31 is rotated, so that the abutment part 13 continues to move away from the fixing plate 21, so that the reaction force of the adjustment pin 1 moving away from the fixing plate 21 pushes the tube beam in the opposite direction, thereby moving the tube beam in the X and Y directions, so that the tube beam moves to the middle position inside the vehicle, and the tube beam is fixedly connected to the vehicle body by fasteners, so that a push-pull connection structure is formed between the vehicle body and the tube beam clamping part.

[0026] Example 2

[0027] Example 2 is basically the same as Example 1, except that, as Figure 3 As shown, the bottom of the adjusting ring 3 is provided with a relief groove 321. The relief groove is annular and fits the fixing groove 211. The relief groove 321 is used to avoid the welding points or fasteners between the fixing plate 21 and the mounting plate, thereby reducing the precision requirements of welding or assembly and ensuring that the adjusting ring 3 can rotate between the fixing plate 21 and the outer shell 22. Thus, the relative position of the tube beam and the support surface is adjusted by using the adjusting pin 1.

[0028] Example 3

[0029] Based on Embodiment 1, the stop 23 is designed as an adjustable structure. By flexibly adjusting its position, the movement limit position of the adjusting pin 1 can be changed to adapt to diverse application needs. Typically, this adjustable stop 23 is fixed with bolts. During operation, simply loosening the bolts allows for easy adjustment of the stop 23's position, and tightening the bolts again secures it. A cushioning material, such as a rubber pad or elastomer, can be embedded in the surface of the stop 23 to reduce the impact force generated when the adjusting pin 1 contacts it, thereby protecting the adjusting pin 1 and the stop 23 from damage. These cushioning materials are typically between 1mm and 3mm thick, possessing not only excellent elasticity but also outstanding wear resistance.

[0030] In practical application, when the operator rotates the adjusting ring 3, the adjusting pin 1 is driven to move, and if the adjusting pin 1 touches the predetermined limit position, the stop block 23 will immediately prevent it from continuing to advance. At this time, the operator will obviously feel resistance, prompting that the adjustment limit has been reached. This design effectively avoids various problems caused by excessive adjustment, significantly improving the safety and reliability of the overall structure. By adding the stop block 23, the movement limit of the adjusting pin 1 is limited, greatly enhancing the safety and reliability of the overall structure, successfully preventing potential failures caused by excessive adjustment.

[0031] The above is only an embodiment of the present application, and well-known specific technical solutions and / or common knowledge of characteristics in the scheme are not described in detail. It should be noted that the technical means for solving problems in the above embodiments of the present application can be combined to solve multiple technical problems at the same time. For those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application. These will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation in the specification can be used to explain the content of the claims.

Claims

1. A structure for compensating for assembly and precision errors for adjusting the gap between an assembly surface and an assembly piece, characterized by: The adjusting pin is arranged at one end of the assembling surface and at the other end is screwed with an adjusting ring, which is arranged in rotation on the assembling part and can drive the adjusting pin and the assembling part to move radially by rotation.

2. A structure for compensating for assembly and precision errors according to claim 1, characterized in that: The adjusting pin and the adjusting ring are arranged in rotation on the fixing disc, and the fixing disc is fixedly connected with the assembling part.

3. A structure for compensating for assembly and precision errors according to claim 2, characterized in that: An outer shell is fixedly arranged outside the fixing disc, and an opening for controlling the rotation of the adjusting ring is arranged on the outer shell.

4. A structure for compensating for assembly and precision errors according to claim 3, characterized in that: A stop block is arranged on the opening and is located in the radial direction of the movement of the limiting pin and can limit the limit position of the movement of the adjusting pin.

5. A structure for compensating for assembly and precision errors according to claim 4, characterized in that: A hexagonal adjusting part is arranged at the free end of the adjusting ring, and the free end of the hexagonal adjusting part is away from and extends out of the opening.

6. A structure for compensating for assembly and precision errors according to claim 5, characterized in that: A fixing groove for fixing with the assembling part is arranged on the fixing disc.

7. A structure for compensating for assembly and precision errors according to claim 6, characterized in that: A fixing part is fixed in the fixing groove, the fixing disc is fixedly connected with the assembling part through the fixing part, and an avoiding groove is arranged at the bottom of the adjusting ring, which is annular and matched with the fixing groove.

8. A structure for compensating for assembly and precision errors according to any one of claims 1-7, characterized in that: A fastener is arranged between the assembling surface and the assembling part and is screwed to connect the assembling surface with the assembling part.

Images