A double-sided processing tool for a heat sink

Abstract

The utility model relates to a kind of for radiator bidirectional processing frock, including work platform, several groups of along left and right direction parallel distribution on work platform on the article unit and radiator;Each group of article unit includes a first article unit and a second article mechanism, and the structure of first article unit and second article mechanism is identical and mutually symmetrical installation on the left and right sides of work platform.The utility model is by the article mechanism of symmetrical arrangement and the ingenious positioning table, side opening design, radiator is clamped once, and the key processing area of inside and outside two sides is all without obstruction, can complete all processing contents in two sides in a process, significantly improve production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the heat sink processing related technical field especially, a kind of for heat sink bidirectional processing tooling. BACKGROUND

[0002] At present, for the heat sink with complex structure, need to be milled, drilled and other processing on multiple sides (especially inside and outside two sides), such as profile heat sink for electronic equipment or power equipment, the traditional processing mode is to use single side positioning tooling. When processing, the operator first clamps the heat sink on the tooling, and processes one side (such as the inside). After completing the processing of the side, the clamp needs to be loosened, the heat sink is taken down, and after turning over or adjusting the direction, it is clamped to the tooling or another set of tooling again, so that the other side (such as the outside) can be processed.

[0003] The processing mode of the prior art has the following obvious deficiencies: Twice clamping, twice tool setting and twice processing consume a lot of time, which seriously restricts the production efficiency.

[0004] Because of the need for secondary clamping, the positioning reference of the heat sink changes in the two processes, which is easy to produce cumulative positioning error, so that the relative position accuracy (such as coaxiality and perpendicularity) of the two sides of the processed features is difficult to meet the design requirements, and even produces waste products.

[0005] The operator needs to repeatedly clamp and disassemble, which increases the labor intensity.

[0006] In view of the above defects, the designer actively researches and innovates to create a bidirectional processing tooling for heat sink, so that it has more industrial use value. CONTENT OF THE UTILITY MODEL

[0007] To solve the above technical problems, the purpose of the utility model is to provide a bidirectional processing tooling for heat sink.

[0008] To achieve the above purpose, the utility model adopts the following technical solutions: A bidirectional processing tooling for heat sink, comprising a workbench, a plurality of groups of storage units distributed side by side along the left-right direction on the workbench and a heat sink; Each group of storage units comprises a first storage group mechanism and a second storage mechanism, and the first storage group mechanism and the second storage mechanism are installed on the left and right sides of the workbench with the same structure and mutual symmetry. The first or second storage mechanism comprises a storage rack installed on the working platform, a positioning table recessed downward is formed in the storage rack, a rear limiting block is arranged at the rear side of the positioning table, a front opening is formed at the front side of the positioning table, a side limiting block is arranged at the inner side of the positioning table, and a side opening is formed at the outer side of the positioning table. The heat sink comprises a heat sink body, a plurality of heat sink fins are installed on the heat sink body, a first upper connecting plate is arranged at the inner side of the heat sink body, a second upper connecting plate is arranged at the outer side of the heat sink body, the second upper connecting plate is connected with a lower bending plate, and a gap is formed at the front side or the rear side of the heat sink body. The heat sink body is located in the positioning table, the first upper connecting plate is in contact with the side limiting block, the second upper connecting plate is located at the side opening, and the bending plate continues to be attached to the storage rack below the side opening, and the gap is in contact with the rear limiting block or located in the front opening.

[0009] As a further improvement of the utility model, upper pressing cylinders are installed on the working platforms at the left and right sides of the storage rack, and the upper pressing cylinders drive upper pressing blocks above to press the heat sink below from above.

[0010] As a further improvement of the utility model, a front pressing cylinder is installed on the working platform at the front side of the storage rack, and the front pressing cylinder drives a front pressing block to press the heat sink at the rear side from the side.

[0011] As a further improvement of the utility model, a first avoiding groove with a linear structure is formed at the rear middle part in the positioning table.

[0012] As a further improvement of the utility model, second avoiding grooves with a hole structure are formed at the left and right ends of the rear side in the positioning table.

[0013] As a further improvement of the utility model, arc-shaped steps are arranged between the positioning table and the side limiting block and between the positioning table and the side opening.

[0014] As a further improvement of the utility model, a plurality of positioning columns are uniformly installed in the positioning table along the front-rear direction, and a plurality of positioning holes compatible with the positioning columns below are formed at the bottom of the heat sink body.

[0015] By the above scheme, the utility model has at least the following advantages: The utility model improves production efficiency by arranging the storage mechanism symmetrically, designing the positioning table and the side opening skillfully, and completing all processing contents on both sides in one process without shielding the key processing areas on the inner and outer sides of the heat sink after clamping the heat sink once.

[0016] The utility model discloses utilize the precision cooperation of positioning post and positioning hole, combine the location of side limit block, rear limit block and the initiative push of front pressure cylinder, realize the complete restraint and accurate positioning of radiator in space six degrees of freedom, effectively guarantee the consistency of workpiece position when multiple clamping and batch processing, thereby ensure the machining precision.

[0017] The utility model discloses the multiple point joint compression of upper pressure cylinder and front pressure cylinder, make workpiece firmly fixed on frock in the processing, reduce the vibration and deformation caused by cutting force, be favorable to improve the processing surface quality and tool life.

[0018] The above description is only the summary of the technical scheme of the utility model, in order to can more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following is the preferred embodiment of the utility model and cooperates the detailed description of drawing. DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be simply introduced to the drawing needed in the embodiment, and should understand, the following drawing only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0020] Figure 1 It is a structure schematic diagram of the utility model discloses a kind of radiator bidirectional processing frock; Figure 2 It is Figure 1 The structure schematic diagram of first storage group mechanism in it; Figure 3 It is Figure 1 The structure schematic diagram of second storage mechanism in it; Figure 4 It is Figure 1 The structure schematic diagram of radiator on first storage group mechanism in it; Figure 5 It is Figure 1 The structure schematic diagram of radiator on second storage group mechanism in it.

[0021] Wherein, the meaning of each reference sign in drawing is as follows.

[0022] Workbench 1, first storage group mechanism 2, second storage mechanism 3, radiator 4, upper pressing cylinder 5, upper pressing block 6, front pressing cylinder 7, front pressing block 8, storage rack 9, rear limiting block 10, front opening 11, side limiting block 12, side opening 13, positioning table 14, first avoiding slot 15, second avoiding slot 16, arc-shaped step 17, positioning column 18, radiator body 19, first upper connecting plate 20, second upper connecting plate 21, heat dissipation fin 22, positioning hole 23, bending plate 24, notch 25. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0024] In order to make the person in the technical field better understand the present application scheme, the following will be combined with the drawings in the embodiment of the present application, the technical scheme in the embodiment of the present application is described clearly and completely, obviously, the described embodiment is only a part of the embodiment of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0025] The first embodiment of the present application: As Figure 1 The present embodiment is a two-way processing tool for radiator, mainly comprising a workbench 1, a plurality of storage units arranged side by side along the left and right directions on the workbench 1 and a radiator 4 to be processed. Each set of storage units is composed of a first storage mechanism 2 and a second storage mechanism 3. The first storage mechanism 2 and the second storage mechanism 3 have the same structure and are installed on the left and right sides of the workbench 1 in a symmetrical manner. This symmetrical layout is the basis for realizing two-way synchronous processing.

[0026] As Figure 2 And Figure 3Specifically, no matter the first storage mechanism 2 or the second storage mechanism 3, the core is a storage rack 9 fixedly installed on the working platform 1. Inside the storage rack 9, a positioning table 14 recessed towards the bottom is processed, for supporting the radiator. In order to accurately constrain the radiator, a rear limiting block 10 is arranged at the rear side of the positioning table 14, for blocking the rear movement of the radiator; a front opening 11 is provided at the front side of the positioning table 14, which not only facilitates the taking and placing of the radiator, but also provides an action space for the front pressing mechanism. A side limiting block 12 is arranged at the inner side of the positioning table 14, i.e. the side towards the tooling center, for limiting the inner side reference of the radiator; and a side opening 13 is provided at the outer side of the positioning table 14, for completely exposing the outer side structure of the radiator for machining.

[0027] The tooling is aimed at a radiator 4 with a specific structure. As shown in Figure 4 and Figure 5 , it includes a radiator body 19, on which a plurality of radiator fins 22 are installed. The first upper connecting plate 20 to be machined is arranged at the inner side of the radiator body 19, and the second upper connecting plate 21 also to be machined is arranged at the outer side of the radiator body 19, and is connected with a downwardly extending bending plate 24. In addition, a notch 25 is provided at the front side or rear side of the radiator body 19.

[0028] When clamped, the radiator body 19 is placed in the positioning table 14. The first upper connecting plate 20 at the inner side is in contact with the side limiting block 12, so as to determine the machining reference at the inner side; and the second upper connecting plate 21 at the outer side is located directly above the side opening 13, and the bending plate 24 below continues to extend downwards and is attached to the outer side of the positioning table 14 below the side opening 13, so that the entire outer side area of the radiator is unobstructed. At the same time, the notch 25 on the radiator is in contact with the rear limiting block 10 to achieve rear limiting, or is suspended in the upper area of the front opening 11.

[0029] In order to achieve reliable clamping, an upper pressing cylinder 5 is installed on the working platform 1 at both sides of the storage rack 9, and each upper pressing cylinder 5 drives an upper pressing block 6 above, for pressing the radiator 4 below from above. At the same time, a front pressing cylinder 7 is installed on the working platform 1 at the front side of the storage rack 9, and the front pressing cylinder 7 drives a front pressing block 8, for laterally pressing the radiator 4 at the rear side from the front, to ensure that it is stably attached to the rear limiting block 10.

[0030] The design of the positioning platform 14 also incorporates details to improve compatibility and protection. A first recessed groove 15 with a straight structure is formed in the center of the rear side of the positioning platform 14. A second recessed groove 16 with a hole-like structure is formed at each of the left and right ends of the rear side of the positioning platform 14. These recessed grooves are used to accommodate various protrusions or burrs that may exist on the bottom of the radiator, preventing inaccurate positioning or unstable placement due to uneven bottom surfaces. Furthermore, transitional curved steps 17 are provided at the junction of the positioning platform 14 and the side limiting block 12, and at the junction of the positioning platform 14 and the side opening 13. These curved steps 17 effectively prevent sharp right angles from scratching the precision connecting plates on the radiator.

[0031] Finally, to achieve higher positioning accuracy, several positioning posts 18 are evenly installed along the front-to-back direction within the positioning stage 14. Correspondingly, several positioning holes 23 that mate with these positioning posts 18 are machined on the bottom of the radiator body 19. Through the precise fit between the positioning posts 18 and the positioning holes 23, the radiator is accurately positioned in the horizontal plane, greatly improving the accuracy of repeated clamping and the consistency of machining.

[0032] The second embodiment of this utility model: like Figures 1-5 As shown, this embodiment provides a positioning fixture for bidirectional machining of a heat sink, used to simultaneously mill the inner and outer sides of an aluminum alloy profile heat sink and drill holes.

[0033] The fixture includes a rectangular steel work platform 1. On the surface of the work platform 1, three identical storage units are installed side-by-side in a left-right direction. Each storage unit consists of a first storage mechanism 2 and a second storage mechanism 3. The first storage mechanism 2 and the second storage mechanism 3 are installed symmetrically about the longitudinal centerline of the work platform 1. Each storage mechanism includes a shelf 9 bolted to the work platform 1.

[0034] A rectangular positioning platform 14 with a downward indentation is milled in the middle of the shelf 9. The rear sidewall of the positioning platform 14 extends upward to form a rectangular rear limiting block 10. The front side of the positioning platform 14 is completely open, forming a front opening 11. The inner sidewall of the positioning platform 14 (facing the center line of the work platform) extends upward to form a long strip-shaped side limiting block 12. A rectangular side opening 13 is formed on the outer sidewall of the positioning platform 14. On the bottom surface of the positioning platform 14, near the inner side of the rear limiting block 10, a first clearance groove 15 running through the left and right sides and two circular second clearance grooves 16 are machined. Smooth arc-shaped steps 17 are machined at the junction of the positioning platform 14 and the side limiting block 12, and at the junction of the positioning platform 14 and the side opening 13. In addition, four cylindrical positioning posts 18 are vertically installed on the bottom surface of the positioning platform 14, arranged in two rows along the front-back direction.

[0035] The heat sink 4 to be processed includes a flat heat sink body 19 with densely arranged heat dissipation fins 22 on its upper part. The inner side (defined as the first side) of the heat sink body 19 has a thickened first upper connecting plate 20, and its outer side (defined as the second side) has a thickened second upper connecting plate 21, which is bent downwards to form a bent plate 24. The bottom of the heat sink body 19 has four positioning holes 23 corresponding to the positions of the positioning posts 18. A rectangular notch 25 is also formed in the middle of the rear side of the heat sink body 19.

[0036] On the work platform 1, an upper pressure cylinder 5 is installed outside the side opening 13 of each shelf 9, with its piston rod pointing downwards and its end connected to an upper pressure block 6. On the middle of the front edge of the work platform 1, a front pressure cylinder 7 is installed, with its piston rod pointing backwards and its end connected to a long strip-shaped front pressure block 8. The length of the front pressure block 8 is sufficient to act simultaneously on the radiators located at the front opening 11 of the three sets of storage units.

[0037] The working process of this embodiment: Loading and Positioning: The operator places the three radiators 4 on the positioning platforms 14 of the three storage units respectively. During placement, the four positioning holes 23 on the bottom of the radiator are aligned and the four positioning posts 18 are inserted. The inner side of the first upper connecting plate 20 of the radiator is tightly attached to the side limiting block 12; its second upper connecting plate 21 and bending plate 24 are suspended directly above the side opening 13, and the lower outer side of the bending plate 24 is attached to the outer wall of the storage rack 9. At the same time, the notch 25 on the rear side of the radiator is engaged with the rear limiting block 10. Some protruding structures on the bottom of the radiator fall into the first clearance groove 15 or the second clearance groove 16 to ensure that it is placed stably.

[0038] Tightening and Fixing: After placing all the radiators, activate the pneumatic system. The six upper pressure cylinders 5 on both sides simultaneously actuate, driving the upper pressure blocks 6 to descend and press against the top of the radiator 4 (usually the top plane of the cooling fins 22). Subsequently, the front pressure cylinder 7 actuates, driving the front pressure block 8 to move backward, evenly pushing the front sides of the three radiators through the front opening 11, forcing all radiators to move backward until their rear sides (or notches 25) firmly abut against the rear limit block 10, thus completing precise positioning and locking in the front-rear direction. At this point, the radiators are fully constrained and tightened in all three XYZ directions.

[0039] Two-way machining: The cutting tools of the machining center or gantry milling machine can machine the radiator from both the "inner side" (i.e., the space above the left and right storage mechanisms) and the "outer side" (i.e., the space outside the storage mechanisms) of the fixture. For example, the first upper connecting plate 20 of the radiator can be milled and drilled from the inner side; the second upper connecting plate 21 and the bending plate 24 of the radiator can be milled and drilled from the outer side. All machining can be completed sequentially or synchronously (using a multi-axis machine tool) after a single setup.

[0040] Unloading: After processing, the front pressure cylinder 7 retracts first, releasing the constraint in the front-to-back direction. Then the upper pressure cylinder 5 retracts, releasing the upper clamping force. The operator can then remove the processed radiator 4 from the positioning table 14, completing one work cycle.

[0041] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tooling for bidirectional processing of radiators, comprising a work platform (1), several sets of storage units arranged side by side on the work platform (1) in the left-right direction, and a radiator (4). Its features are: Each of the storage units includes a first storage group mechanism (2) and a second storage mechanism (3). The first storage group mechanism (2) and the second storage mechanism (3) have the same structure and are symmetrically installed on the left and right sides of the work platform (1). The first storage unit (2) or the second storage unit (3) includes a storage rack (9) installed on the work platform (1). A positioning platform (14) with a downward recess is provided inside the storage rack (9). A rear limiting block (10) is provided on the rear side of the positioning platform (14). A front opening (11) is provided on the front side of the positioning platform (14). A side limiting block (12) is provided on the inner side of the positioning platform (14). A side opening (13) is provided on the outer side of the positioning platform (14). The radiator (4) includes a radiator body (19), on which a plurality of heat dissipation fins (22) are installed. A first upper connecting plate (20) is provided on the inner side of the radiator body (19), and a second upper connecting plate (21) is provided on the outer side of the radiator body (19). The second upper connecting plate (21) is connected to the bending plate (24) below. A notch (25) is opened on the front or rear side of the radiator body (19). The radiator body (19) is located inside the positioning platform (14), the first upper connecting plate (20) is in contact with the side limiting block (12), the second upper connecting plate (21) is located at the side opening (13) and the bent plate (24) continues to be attached to the shelf (9) below the side opening (13), and the notch (25) is in contact with the rear limiting block (10) or located inside the front opening (11).

2. The tooling for bidirectional machining of radiators as described in claim 1, characterized in that, On the working platform (1) on both sides of the shelf (9), there are upper pressure cylinders (5). The upper pressure cylinders (5) drive the upper pressure block (6) above to press the radiator (4) below.

3. The tooling for bidirectional machining of radiators as described in claim 1, characterized in that, A front pressure cylinder (7) is installed on the working platform (1) in front of the shelf (9). The front pressure cylinder (7) drives the front pressure block (8) to perform side pressing on the radiator (4) on the rear side.

4. The tooling for bidirectional machining of radiators as described in claim 1, characterized in that, A first clearance groove (15) with a straight structure is provided in the middle of the rear side of the positioning platform (14).

5. The tooling for bidirectional machining of radiators as described in claim 1, characterized in that, The positioning platform (14) has a second clearance groove (16) with a hole-like structure at both the left and right ends of the rear side.

6. The tooling for bidirectional machining of radiators as described in claim 1, characterized in that, Transitional arc-shaped steps (17) are provided between the positioning platform (14) and the side limiting block (12), and between the positioning platform (14) and the side opening (13).

7. The tooling for bidirectional machining of radiators as described in claim 1, characterized in that, Several positioning posts (18) are evenly installed in the positioning platform (14) along the front-back direction, and several positioning holes (23) that are adapted to the positioning posts (18) are opened at the bottom of the radiator body (19).

Images