Positioning structure and welding fixture

Abstract

The utility model provides a positioning structure and a welding fixture, and relates to the technical field of welding, in particular to the technical field of fixtures. The positioning structure comprises a first clamping part, a second clamping part and an avoiding piece, wherein the first clamping part is clamped on one side of a first workpiece; the second clamping part and the first clamping part are arranged on the opposite side, the second clamping part is clamped on the other side of the first workpiece and attached to the side face of the second workpiece, and the first clamping part and the second clamping part jointly clamp and position a matched welding area of the first workpiece and the second workpiece; the receding piece is arranged on the first clamping part and / or the second clamping part, so that a movable gap is formed between the first clamping part and / or the second clamping part and the first workpiece. The first clamping part and / or the second clamping part are / is internally provided with the avoiding piece, so that the movable gap is formed between the first clamping part and / or the second clamping part and the first workpiece, the problem of matching interference caused by tolerance fluctuation of the workpiece can be solved, and the finally obtained datum plane of the total workpiece is flat.

Description

Technical Field

[0001] The present disclosure relates to the field of welding technology, specifically to the field of fixture technology, and especially to a positioning structure and a welding fixture. Background Art

[0002] Welding is a common processing method to connect two or more parts into one component. The resulting components usually have high strength in all directions. In the welding process, welding fixtures are needed. Welding fixtures can accurately position and reliably clamp the weldment, facilitate assembly and welding of the weldment, and ensure the structural accuracy of the weldment. Therefore, actively promoting and using tooling fixtures that are compatible with the product structure in modern weldment production is of great significance to improving product quality.

[0003] In the process of welding workpiece matching, there is often a situation where a large workpiece is superimposed on a small workpiece for welding. Since there is matching interference between the small workpiece and the large workpiece (both are within the tolerance requirements), the use of the existing positioning structure for welding will cause the reference point of the large workpiece to fail to fall into place. Welding under this condition will cause the entire welding assembly to be distorted and the detection reference surface cannot fit. Utility Model Content

[0004] The present invention provides a positioning structure and a welding fixture.

[0005] According to one aspect of the present disclosure, there is provided a positioning structure, comprising:

[0006] A first clamping portion, clamped on one side of the first workpiece;

[0007] A second clamping portion is provided on the opposite side of the first clamping portion, clamped on the other side of the first workpiece and in contact with the side surface of the second workpiece, the first clamping portion and the second clamping portion jointly clamp and position the matching welding area of ​​the first workpiece and the second workpiece;

[0008] The avoidance member is arranged on the first clamping portion and / or the second clamping portion, so that there is a movable gap between the first clamping portion and / or the second clamping portion and the first workpiece.

[0009] Optionally, the avoidance member includes a first avoidance member, a first opening is opened in the first clamping portion, the first opening is arranged on a side of the first clamping portion close to the second clamping portion, the first avoidance member is embedded in the first opening and protrudes from a surface of the first clamping portion.

[0010] Optionally, a thread is provided in the first opening, and the first avoidance member is embedded in the first clamping portion through a threaded connection.

[0011] Optionally, the avoidance member further includes a second avoidance member, a second opening is provided in the second clamping portion, the second opening is arranged on a side of the second clamping portion close to the first clamping portion, the second avoidance member is embedded in the second opening and protrudes from a surface of the second clamping portion.

[0012] Optionally, a thread is provided in the second opening, and the second avoidance member is embedded in the second clamping portion through a threaded connection.

[0013] Optionally, a distance that the first avoidance member protrudes from the first clamping portion is equal to a distance that the second avoidance member protrudes from the second clamping portion.

[0014] Optionally, the depth of the first opening is smaller than the height of the first clamping portion, and the depth of the second opening is smaller than the height of the second clamping portion.

[0015] Optionally, the avoidance member includes a head and a main body, a spring is installed in the main body, and the head protrudes from the first clamping portion or the second clamping portion.

[0016] Optionally, the avoidance member is a spring plunger.

[0017] According to another aspect of the present disclosure, a welding fixture is provided, such as the positioning structure described above.

[0018] The present disclosure provides a positioning structure and a welding fixture. When the first workpiece and the second workpiece have an upward or downward deviation, the positioning structure provides an avoidance member in the first clamping part and / or the second clamping part so that there is a movable gap between the first clamping part and / or the second clamping part and the first workpiece, thereby improving the matching interference problem caused by the tolerance fluctuation of the workpieces, and further achieving a flat reference surface of the total workpiece obtained by welding, thereby avoiding the distortion of the total workpiece obtained by welding due to uneven force.

[0019] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0021] Figure 1 is a schematic diagram of an exemplary positioning structure in an embodiment of the present disclosure;

[0022] Figure 2 is a schematic diagram of another exemplary positioning structure in an embodiment of the present disclosure;

[0023] Figure 3 is a schematic diagram of an exemplary workpiece B reference surface in an embodiment of the present disclosure;

[0024] Figure 4 is a schematic diagram of a positioning structure in an embodiment of the present disclosure;

[0025] Figure 5 is a schematic diagram of a positioning structure in another embodiment of the present disclosure.

[0026] Among them, 1-first workpiece; 2-second workpiece; 3-positioning pin; 4-support unit N, 5-clamping unit N; 6-support unit M; 7-clamping unit M; 8-support unit P; 9-clamping unit P; 10-avoidance member; 11-first clamping part; 12-second clamping part; 13-first avoidance member; 14-second avoidance member. DETAILED DESCRIPTION

[0027] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0028] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] It should be noted that the block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities.

[0030] In the prior art, see Figure 1 and Figure 2 As shown, Figure 1is a schematic diagram of an exemplary positioning structure in an embodiment of the present disclosure, Figure 2 It is a schematic diagram of another exemplary positioning structure in the embodiment of the present disclosure. Take workpiece A as an example of the first workpiece 1, and workpiece B as an example of the second workpiece 2. Workpiece A and workpiece B are welded into workpiece C. Two positioning pins 3 are installed on workpiece B. When designing the fixture, support unit N4 and clamping unit N5 are used to clamp and position workpiece A and workpiece B. Support unit M6, clamping unit M7, support unit P8 and clamping unit P9 are provided on workpiece B for fixing. Rigid units are used for support unit N4 and clamping unit N5, and there is no special structure to absorb matching deviations. Therefore, when welding and matching workpiece A and workpiece B, it is easy for support unit M6 or clamping unit P9 to not fit due to contact of support unit N4, resulting in overall distortion of the welded assembly and failure to fit the detection reference surface. See. Figure 3 , Figure 3 It is a schematic diagram of an exemplary reference surface of workpiece B in an embodiment of the present disclosure. Under ideal conditions, that is, when workpiece B is not welded and matched with workpiece A, reference surfaces A1, A2, A3 and A4 of workpiece B are on the same plane, and the entire reference surface is flat. However, when workpiece A and workpiece B are welded and matched, it is easy for support unit M6 or P to not fit due to the contact of support unit N4, that is, the reference surface is uneven.

[0031] In order to solve the above technical problems, the present disclosure provides a new positioning structure, see Figure 4 As shown, Figure 4 It is a schematic diagram of the positioning structure in the embodiment of the present disclosure, and the positioning structure includes: a first clamping portion 11, a second clamping portion 12 and an avoidance member 10, the first clamping portion 11 is clamped on one side of the first workpiece 1; the second clamping portion 12 is arranged on the opposite side of the first clamping portion 11, clamped on the other side of the first workpiece 1 and fit with the side of the second workpiece 2, the first clamping portion 11 and the second clamping portion 12 jointly clamp and position the matching welding area of ​​the first workpiece 1 and the second workpiece 2; the avoidance member is arranged on the first clamping portion 11 and / or the second clamping portion 12, so that there is a movable gap between the first clamping portion 11 and / or the second clamping portion 12 and the first workpiece 1.

[0032] Specifically, the avoidance member is arranged on the first clamping portion 11 and / or the second clamping portion 12, which means that the avoidance member is arranged on the first clamping portion 11, or the avoidance member is arranged on the second clamping portion 12, or the avoidance member can be arranged on both the first clamping portion 11 and the second clamping portion 12. Those skilled in the art can arrange it according to actual needs, which is not limited here. The specific structure of the avoidance member can be, for example, a structure with a retractable spring, and specifically, for example, a structure such as a spring plunger that can adjust the gap with the first workpiece 1.

[0033] In addition, for the first workpiece 1 and the second workpiece 2, when the first workpiece 1 and the second workpiece 2 are welded together, the second workpiece 2 is superimposed on the first workpiece 1, and the volume of the second workpiece 2 is larger than the volume of the first workpiece 1. In this way, when the large workpiece is superimposed on the small workpiece for welding, matching interference will occur, so the reference surface of the total workpiece obtained by welding is distorted. In order to solve this technical problem, the present application proposes a new positioning structure, in which a avoidance member is provided in the first clamping portion 11 or the second clamping portion 12, and in the first clamping portion 11 and the second clamping portion 12, so that there is a movable gap between the first clamping portion 11 and / or the second clamping portion 12 and the first workpiece 1. That is, the first clamping portion 11 and / or the second clamping portion 12 do not directly contact the first workpiece 1, so that the first clamping portion 11 and / or the second clamping portion 12 are in contact with the first workpiece 1. Change from the original rigid contact to flexible contact, thereby improving the matching interference problem caused by the tolerance fluctuation of the workpiece.

[0034] The present disclosure provides a positioning structure and a welding fixture. When the first workpiece and the second workpiece have an upward or downward deviation, the positioning structure provides an avoidance member in the first clamping part and / or the second clamping part so that there is a movable gap between the first clamping part and / or the second clamping part and the first workpiece, thereby improving the matching interference problem caused by the tolerance fluctuation of the workpieces, and further achieving a flat reference surface of the total workpiece obtained by welding, thereby avoiding the distortion of the total workpiece obtained by welding due to uneven force.

[0035] In some optional embodiments, the avoidance member includes a first avoidance member 13, a first opening is opened in the first clamping portion 11, the first opening is arranged on a side of the first clamping portion 11 close to the second clamping portion 12, the first avoidance member 13 is embedded in the first opening and protrudes from the surface of the first clamping portion 11.

[0036] Specifically, taking the scheme in which the first clamping part 11 and the second clamping part 12 are both provided with avoidance members as an example, a first avoidance member 13 is provided in the first clamping part 11, and a second avoidance member 14 is provided in the second clamping part 12. For the scheme in which the first avoidance member 13 is provided in the first clamping part 11, a first opening can be provided in the first clamping part 11, and the first opening is provided on a side close to the first workpiece 1. By embedding the first avoidance member 13 in the first opening, it is beneficial to have a movable gap between the first clamping part 11 and the first workpiece 1. When matching interference is caused by workpiece tolerance fluctuations, the movable gap can offset a certain stress, so that the overall workpiece reference surface obtained by welding can be flat, thereby ensuring the stability of subsequent positioning of the workpiece.

[0037] In this way, by providing the first opening in the first clamping portion, the first avoidance member is installed in the first clamping portion through the first opening, thereby facilitating the installation of the first avoidance member. This installation method is relatively simple, convenient and easy to implement.

[0038] In some optional embodiments, a thread is provided in the first opening, and the first avoidance member 13 is embedded in the first clamping portion 11 through a threaded connection.

[0039] In this way, by providing a thread in the first opening, the first avoidance member is embedded in the first clamping portion through a threaded connection, thereby making the installation of the first avoidance member more convenient.

[0040] In some optional embodiments, in addition to providing a thread in the first opening, the first avoidance member 13 can be embedded in the first clamping portion 11 in other ways, for example, the first avoidance member 13 can be embedded in the first clamping portion 11 by bonding, magnetic attraction, etc.

[0041] In some optional embodiments, the avoidance member also includes a second avoidance member 14, a second opening is opened in the second clamping portion 12, the second opening is arranged on a side of the second clamping portion 12 close to the first clamping portion 11, and the second avoidance member 14 is embedded in the second opening and protrudes from the surface of the second clamping portion 12.

[0042] Specifically, taking the scheme in which the first clamping part 11 and the second clamping part 12 are both provided with avoidance members as an example, a first avoidance member 13 is provided in the first clamping part 11, and a second avoidance member 14 is provided in the second clamping part 12. For the scheme in which the second avoidance member 14 is provided in the second clamping part 12, a second opening can be provided in the second clamping part 12, and the second opening is provided on a side close to the first workpiece 1. By embedding the second avoidance member 14 in the second opening, it is beneficial to have a movable gap between the second clamping part 12 and the first workpiece 1. When matching interference is caused by workpiece tolerance fluctuations, the movable gap can offset a certain stress, so that the overall workpiece reference surface obtained by welding can be flat, thereby ensuring the stability of subsequent positioning of the workpiece.

[0043] In this way, by providing the second opening in the second clamping portion, the second avoidance member is installed in the second clamping portion through the second opening, thereby facilitating the installation of the second avoidance member, and the installation is relatively simple, convenient and easy to implement.

[0044] In some optional embodiments, a thread is provided in the second opening, and the second avoidance member 14 is embedded in the second clamping portion 12 through a threaded connection.

[0045] In this way, by providing a thread in the second opening, the second avoidance member is embedded in the second clamping portion through a threaded connection, thereby facilitating the installation of the second avoidance member. This installation method is relatively simple, convenient and easy to implement.

[0046] In some optional embodiments, see Figure 5 As shown, Figure 5 1 is a schematic diagram of a positioning structure in another embodiment of the present disclosure. The distance that the first avoidance member 13 protrudes from the first clamping portion 11 is equal to the distance that the second avoidance member 14 protrudes from the second clamping portion 12 .

[0047] The distance that the first avoidance member 13 protrudes from the first clamping portion 11 and the distance that the second avoidance member 14 protrudes from the second clamping portion 12 can be, for example, 2 mm. Of course, the setting of this distance does not have to be 2 mm, as long as it is within the allowable error range, it meets the requirements.

[0048] In this way, by setting the distance that the first avoidance member protrudes from the first clamping part to be equal to the distance that the second avoidance member protrudes from the second clamping part, the overall force is made uniform, thereby avoiding the distortion of the total workpiece obtained by welding due to uneven force.

[0049] In some optional embodiments, the depth of the first opening is smaller than the height of the first clamping portion 11 , and the depth of the second opening is smaller than the height of the second clamping portion 12 .

[0050] Specifically, the depth direction of the first opening refers to the extension direction of the first opening, and the height direction of the first clamping portion 11 refers to the direction perpendicular to the first workpiece 1; the depth direction of the second opening refers to the extension direction of the second opening, and the height direction of the second clamping portion 12 refers to the direction perpendicular to the first workpiece 1.

[0051] In this way, by setting the depth of the first opening to be smaller than the height of the first clamping portion, and the depth of the second opening to be smaller than the height of the second clamping portion, the strength of the positioning structure satisfies the clamping strength.

[0052] In some optional embodiments, the avoidance member includes a head and a main body, a spring is installed in the main body, and the head protrudes from the first clamping portion 11 or the second clamping portion 12 .

[0053] As for the specific structure of the avoidance piece, the avoidance piece may be a structure including a retractable spring. By arranging a spring in the avoidance piece, the spring preload force can be adjusted according to the stress, so as to facilitate the adjustment of the size of the movable gap between the first clamping part 11 and / or the second clamping part 12 and the first workpiece 1.

[0054] In this way, by arranging a spring in the avoidance member, the spring preload force can be adjusted according to the magnitude of the stress, thereby facilitating the adjustment of the size of the active gap between the first clamping portion and / or the second clamping portion and the first workpiece.

[0055] In some optional embodiments, the avoidance member is a spring plunger.

[0056] Furthermore, the specific structure of the avoidance member can be a spring plunger, which is also called a ball plunger or a positioning column. The spring plunger can limit the component, and during use, the limit distance can be adjusted, the telescopic distance can be quickly adjusted, and the installation can be convenient. In addition, the spring plunger structure is easy to use, and the spring preload can be adjusted according to the stress.

[0057] In this way, the telescopic distance can be quickly adjusted by using the sampling spring plunger as an avoidance member to meet the active gap between the first clamping part and the first workpiece, or the second clamping part and the first workpiece. The adjustment process is relatively simple and easy to implement.

[0058] According to an embodiment of the present disclosure, the present disclosure also provides a welding fixture including: the positioning structure as described above.

[0059] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0060] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the contents disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application.

[0061] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A positioning structure, characterized in that: include: A first clamping portion, clamped on one side of the first workpiece; A second clamping portion is provided on the opposite side of the first clamping portion, clamped on the other side of the first workpiece and in contact with the side surface of the second workpiece, the first clamping portion and the second clamping portion jointly clamp and position the matching welding area of ​​the first workpiece and the second workpiece; The avoidance member is arranged on the first clamping portion and / or the second clamping portion, so that there is a movable gap between the first clamping portion and / or the second clamping portion and the first workpiece.

2. The positioning structure according to claim 1, wherein: The avoidance member includes a first avoidance member, a first opening is formed in the first clamping portion, the first opening is arranged on a side of the first clamping portion close to the second clamping portion, the first avoidance member is embedded in the first opening and protrudes from a surface of the first clamping portion.

3. The positioning structure according to claim 2, wherein: A thread is provided in the first opening, and the first avoidance member is embedded in the first clamping portion through a threaded connection.

4. The positioning structure according to claim 2, wherein: The avoidance member also includes a second avoidance member, a second opening is provided in the second clamping portion, the second opening is arranged on a side of the second clamping portion close to the first clamping portion, the second avoidance member is embedded in the second opening and protrudes from the surface of the second clamping portion.

5. The positioning structure according to claim 4, wherein: A thread is provided in the second opening, and the second avoidance member is embedded in the second clamping portion through a threaded connection.

6. The positioning structure according to claim 4, wherein: The distance that the first avoiding member protrudes from the first clamping portion is equal to the distance that the second avoiding member protrudes from the second clamping portion.

7. The positioning structure according to claim 4, wherein: The depth of the first opening is smaller than the height of the first clamping portion, and the depth of the second opening is smaller than the height of the second clamping portion.

8. The positioning structure according to claim 1, wherein: The avoidance member includes a head and a main body, a spring is installed in the main body, and the head protrudes from the first clamping part or the second clamping part.

9. The positioning structure according to claim 1, wherein: The avoidance member is a spring plunger.

10. A welding fixture, wherein: include: A positioning structure as claimed in any one of claims 1 to 9.

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