Special-shaped part positioning jig

Abstract

The utility model discloses a special-shaped part positioning jig which comprises a jig body, one end portion of the jig body is provided with a main positioning part, an auxiliary positioning part and a supporting part, the main positioning part comprises a boss and a channel communicated with an air pump, and the auxiliary positioning part comprises a sliding way arranged on the outer side of the boss. The supporting piece comprises a supporting column which is arranged on the boss and arranged on the periphery of the passageway. The device is simple in structure and convenient to machine, the boss is arranged, the passageway communicated with the air pump is arranged in the boss, the special-shaped part can be adsorbed through the air pressure difference, the position of the special-shaped part can be further guided or limited or finely adjusted through the sliding way and the supporting column in the adsorption positioning process, it is ensured that the special-shaped part is fixed to a set coordinate, the positioning accuracy is ensured, and the production efficiency is improved. And the jig does not need to move in the whole positioning process, so that the damage of the jig to the special-shaped part in the clamping and fixing process can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning jigs, in particular to a positioning jig for special-shaped parts. Background Art

[0002] During production, the positioning of special-shaped structural parts mostly adopts a method of positioning and fixing with multiple movable structural parts by multi-point and multi-angle clamping. The internal linkage transmission mechanism of the jig is relatively complex, and it is easy to leave marks on the product during clamping and positioning. For some precision parts, such as special-shaped semiconductor packaging housings, even slight clamping marks will affect the product quality and need to be processed in subsequent processes, resulting in cumbersome operations. Summary of the Utility Model

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a positioning jig for special-shaped parts, which has a simple structure and is easy to process. It can adsorb special-shaped parts through air pressure difference. During the adsorption and positioning process, the slideway and support columns can further guide or limit or fine-tune the position of the special-shaped parts, ensuring that the special-shaped parts are fixed at the set coordinates, ensuring the positioning accuracy, and the jig does not need to move during the whole positioning process, which can avoid damage to the special-shaped parts by the jig during the clamping and fixing process.

[0004] To solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A positioning jig for special-shaped parts, including a jig body. One end of the jig body is provided with a main positioning member, an auxiliary positioning member and a support member, wherein:

[0006] The main positioning member includes a convex platform arranged on the jig body and adapted to the end face of the special-shaped part. A passage communicating with each other is arranged on the convex platform, and the passage is connected to an air pump through a pipeline;

[0007] The auxiliary positioning member includes a slideway arranged outside the convex platform;

[0008] The support member includes support columns arranged on the convex platform and around the passage.

[0009] As a further elaboration of the above technical solution:

[0010] In the above technical solution, the passage includes a plurality of connected air grooves and air ducts: a plurality of the air grooves are arranged at the end of the convex platform and communicate with each other. A plurality of the air grooves enclose a plurality of channels on the convex platform, which are similar in shape to the convex platform; a plurality of the air ducts all penetrate through the jig body, one open end of each air duct is arranged on the side wall of the jig body far from the convex platform, and the other open end of each air duct is arranged on the side wall of one of the air grooves.

[0011] In the above technical solution, the end of each support column matches the contour of the end of the special-shaped part.

[0012] In the above technical solution, the end faces of the boss, the support column and the slideway are all flat surfaces or arc surfaces.

[0013] In the above technical solution, an auxiliary positioning plate is further included. The contour edge or side wall of the auxiliary positioning plate is detachably and fixedly connected to the special-shaped part. One end of the auxiliary positioning plate is provided with a clamping groove and a plurality of positioning grooves. The clamping groove is adapted to the boss, and the plurality of positioning grooves are respectively matched with the support columns one by one. A through hole penetrating the auxiliary positioning plate is provided at the bottom of the clamping groove; when the boss is matched and clamped into the clamping groove and each support column is clamped into a positioning groove, the through hole is communicated with the passage.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: the structure is simple and convenient for processing. By arranging a boss and providing a passage communicated with an air pump therein, the special-shaped part can be adsorbed through the air pressure difference. During the adsorption and positioning process, the slideway and the support column can further guide or limit or finely adjust the position of the special-shaped part, ensuring that the special-shaped part is fixed at the set coordinates and ensuring the positioning accuracy. Moreover, the jig does not need to move during the whole positioning process, and damage to the special-shaped part caused by the jig during the clamping and fixing process can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 is Figure 1 the cross-sectional structural diagram of

[0017] Figure 3 is Figure 2 the enlarged structural diagram of part A in

[0018] Figure 4 is the cross-sectional structural diagram of another embodiment of the present utility model;

[0019] Figure 5 is the schematic structural diagram of the auxiliary positioning plate in still another embodiment of the present utility model.

[0020] In the figure: 10, jig body; 21, boss; 22, passage; 1, air groove; 2, air passage; 31, slideway; 41, support column; 50, auxiliary positioning plate; 51, clamping groove; 52, positioning groove; 53, through hole; 60, special-shaped part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 thus should not be construed as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "several" and "multiple" is two or more, unless otherwise specifically defined. In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0023] As Figures 1-3 shown, a positioning fixture for special-shaped parts includes a fixture body 10, and a main positioning member, an auxiliary positioning member and a support member are arranged at one end of the fixture body 10, wherein:

[0024] The main positioning member includes a boss 21 arranged on the fixture body 10 and adapted to the end face of the special-shaped part. A passage 22 communicating with each other is arranged on the boss 21, and the passage 22 is connected to an air pump through a pipeline;

[0025] The auxiliary positioning member includes a slideway 31 arranged outside the boss 21;

[0026] The support member includes support columns 41 provided on the boss 21 and around the passage 22.

[0027] During operation, the boss 21 is matched and abutted against the end face of the special-shaped part 60, and the slideway 31 and the support columns 41 are abutted against the structural parts on the special-shaped part 60. After completion, start the negative pressure mode of the air pump to extract the gas in the passage 22, and adsorb the special-shaped part 60 on the boss 21; after processing, turn off the air pump or start its positive pressure mode to blow air into the passage 22, and then remove the special-shaped part 60 from the positioning fixture.

[0028] The utility model has a simple structure and is easy to process. By providing the boss 21 and arranging a passage 22 communicated with an air pump therein, the special-shaped part 60 can be adsorbed through the air pressure difference. During the adsorption and positioning process, the slideway 31 and the support columns 41 can further guide or limit or finely adjust the position of the special-shaped part 60, ensuring that the special-shaped part 60 is fixed at the set coordinates and ensuring the positioning accuracy. Moreover, during the whole positioning process, the fixture does not need to move, which can avoid damage to the special-shaped part 60 by the fixture during the clamping and fixing process.

[0029] Furthermore, the passage 22 includes a plurality of connected air grooves 1 and air ducts 2: a plurality of air grooves 1 are provided at the end of the boss 21 and are communicated with each other. The plurality of air grooves 1 surround and form a plurality of channels similar to the shape of the boss 21 on the boss 21; a plurality of air ducts 2 all penetrate through the fixture body 10, one open end of each is provided on the side wall of the fixture body 10 far from the boss 21, and the other open end of each is provided on the side wall of an air groove 1.

[0030] It can be understood that the plurality of air grooves 1 surround and form an air path similar to the shape of the boss 21, which can maintain a relatively stable and consistent adsorption force on each part of the special-shaped part 60 during the air extraction process, avoiding or reducing the influence of external forces on the internal precision structure of the special-shaped part 60. In this embodiment, the boss is a circular structure, and the air grooves 1 surround and form a plurality of connected concentric circular structures.

[0031] Furthermore, the end of each support column 41 is matched with the contour of the end of the special-shaped part, and the end faces of the boss 21, the support columns 41 and the slideway 31 are all flat surfaces or arc surfaces.

[0032] In this embodiment, as Figures 1-3 shown, the end faces of the boss 21, the support columns 41 and the slideway 31 are all flat surfaces; at the same time, the height of each support column 41 is less than or equal to the height of the boss 21, which can support or abut against the outer wall or structural parts of the special-shaped part 60 when sucking the special-shaped part 60,

[0033] As Figure 4 shown, in another embodiment of the utility model, the end face of the boss 21 is an arc surface, and the end face of the slideway 31 is an arc surface.

[0034] In still another embodiment of the present utility model, as Figure 5 shown, it further includes an auxiliary positioning plate 50. The contour edge or side wall of the auxiliary positioning plate 50 is detachably fixedly connected to the special-shaped part. One end thereof is provided with a clamping groove 51 and a plurality of positioning grooves 52. The clamping groove 51 is adapted to the convex platform 21, and the plurality of positioning grooves 52 are in one-to-one correspondence with the support columns 41. A through hole 53 penetrating the auxiliary positioning plate 50 is provided at the bottom of the clamping groove 51; when the convex platform 21 is fitted and clamped into the clamping groove 21 and each support column 41 is clamped into a positioning groove 52, the through hole 53 is communicated with the passage 22.

[0035] In this embodiment, the auxiliary positioning plate 50 is clamped on the non-appearance surface and the working surface of the special-shaped part 60, and the special-shaped part 60 is fixed by adsorbing and fixing the auxiliary positioning plate 50 through a positioning jig, which can further strengthen the protection of the appearance and function of the precision special-shaped part 60.

[0036] The above does not impose any limitation on the technical scope of the present utility model. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An irregular part positioning fixture, characterized in that, It includes a jig body, and a main positioning member, an auxiliary positioning member and a support member are provided at one end of the jig body, wherein: The main positioning member includes a boss provided on the jig body and adapted to the end face of the special-shaped part. A through passage is provided on the boss, and the through passage is connected to an air pump through a pipeline; The auxiliary positioning member includes a slideway provided outside the boss; The support member includes support columns provided on the boss and around the through passage.

2. The special-shaped part positioning fixture according to claim 1, characterized in that, The through passage includes a plurality of connected air grooves and air channels: a plurality of the air grooves are provided at the end of the boss and are connected to each other. The plurality of air grooves enclose a plurality of channels similar to the shape of the boss on the boss; a plurality of the air channels penetrate through the jig body, one open end is provided on the side wall of the jig body far from the boss, and the other open end is provided on the side wall of one of the air grooves.

3. The special-shaped part positioning fixture according to claim 1, wherein, The end of each support column matches the contour of the end of the special-shaped part.

4. A special-shaped part positioning fixture according to any one of claims 1-3, characterized in that, The end faces of the boss, the support columns and the slideway are all flat or arc-shaped.

5. The special-shaped part positioning fixture according to claim 4, wherein, It further includes an auxiliary positioning plate. The contour edge or side wall of the auxiliary positioning plate is detachably fixed to the special-shaped part. One end of the auxiliary positioning plate is provided with a clamping groove and a plurality of positioning grooves. The clamping groove is adapted to the boss, and the plurality of positioning grooves are respectively matched with the support columns one by one. A through hole penetrating through the auxiliary positioning plate is provided at the bottom of the clamping groove; when the boss is matched and clamped into the clamping groove and each support column is clamped into one of the positioning grooves, the through hole is connected to the through passage.

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