Three-point reference positioning fixed aluminum alloy battery tray machining tool

Abstract

The utility model relates to the technical field of machinery. A three-point reference positioning fixing type aluminum alloy battery tray machining tool comprises a bottom plate. Three reference blocks are mounted on the bottom plate, and the connecting lines of the centers of the three reference blocks form a triangle; the bottom plate is also provided with a rotary pressing cylinder, and pressing blocks of the rotary pressing cylinder are in one-to-one correspondence with the reference blocks; the bottom plate is also provided with at least five supporting cylinders, and all the supporting cylinders comprise edge supporting cylinders for supporting the edges of the aluminum alloy battery tray and middle supporting cylinders for supporting the center of the aluminum alloy battery tray; the bottom plate is further provided with auxiliary pressing oil cylinders, and pressing blocks of the auxiliary pressing oil cylinders and telescopic heads of the edge supporting cylinders are in one-to-one correspondence and are arranged up and down. According to the utility model, the three reference blocks ensure that the reference surface at the bottom of the tool is in a plane state, and the telescopic head of the supporting cylinder is ejected upwards, so that other areas are effectively supported except the three reference blocks in the plane state, and the natural state of the welded battery tray is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a machining tool. Background Art

[0002] The current industry faces a major variable problem when machining new energy aluminum alloy battery trays. That is, the aluminum alloy battery trays after welding will have diagonal twisting, poor flatness, box frame (sealing surface) turning inside out, and box concave and convex deformation. When the aluminum alloy battery tray is placed on the machining device, it will deform under the clamping state. Due to the deformation of the box, the A datum in some areas cannot be firmly attached, leaving a large gap. After deformation after clamping, after the downward pressure is released after machining, the product will return to the original welding state, which is extremely unstable for the processing size. For machining, it is bound to result in long machine adjustment time, high loss cost, and failure to meet the relevant dimensional requirements of each host assembly, resulting in an indefinite extension of the entire project development time.

[0003] In view of the fact that the existing aluminum alloy battery tray machining tooling cannot meet the problem of multiple dimensional defects caused by box deformation, there is an urgent need for a machining tooling that can be used for aluminum alloy battery trays after welding. Utility Model Content

[0004] In response to the problems existing in the prior art, the utility model provides a three-point reference positioning fixed aluminum alloy battery tray machining tooling, which has solved at least one of the above technical problems.

[0005] The technical solution of the utility model is: a three-point reference positioning fixed aluminum alloy battery tray machining tool, comprising a base plate, characterized in that a positioning assembly is mounted on the base plate, and the positioning assembly includes a guide member and a positioning pin for guiding the aluminum alloy battery tray to be placed from top to bottom;

[0006] Three reference blocks are installed on the bottom plate, and the line connecting the centers of the three reference blocks forms a triangle;

[0007] Three rotary downward-pressing cylinders are also installed on the bottom plate, and the downward-pressing blocks of the rotary downward-pressing cylinders correspond one to one with the reference blocks and are arranged up and down;

[0008] At least five support cylinders are also installed on the bottom plate, and all the support cylinders include edge support cylinders for supporting the edges of the aluminum alloy battery tray and middle support cylinders for supporting the center of the aluminum alloy battery tray;

[0009] Auxiliary downward pressure cylinders are also installed on the bottom plate. The number of the auxiliary downward pressure cylinders is the same as that of the edge support cylinders, and the pressure blocks of the auxiliary downward pressure cylinders correspond to the telescopic heads of the edge support cylinders in a one-to-one manner and are arranged up and down.

[0010] This utility model optimizes the structure of the machining tooling, establishes a plane based on three points, and uses three reference blocks to ensure that the bottom reference surface of the tooling remains flat. The telescopic head of the support cylinder is upward, ensuring that effective support force is provided to other areas except when the three reference blocks ensure the plane, ensuring the natural state of the battery tray after welding, minimizing the impact on processing variables, and greatly improving machining debugging and mass production yield. The support cylinder is a commercially available product. The principle of the support cylinder is contact-type, that is, the telescopic head of the support cylinder stops when it touches the bottom of the aluminum alloy battery tray.

[0011] Further preferably, two positioning pins are provided, and the two positioning pins are arranged adjacent to the two guide members.

[0012] Further preferably, the guide member includes an inclined guide surface inclined inward from top to bottom and a vertical guide surface arranged vertically, and the inclined guide surface and the vertical guide surface are arranged one above the other.

[0013] Further preferably, the guide member includes a guide seat and a support seat arranged above and below, the support seat is provided with a mounting hole, the guide seat is provided with a waist-shaped hole, and the guide seat is connected by a bolt passing through the waist-shaped hole and the mounting hole;

[0014] The inner side surface of the guide seat includes the inclined guide surface and the vertical guide surface;

[0015] The guiding direction of the waist-shaped hole is perpendicular to the vertical guiding surface.

[0016] Further preferably, eight guide members are provided;

[0017] The guide members are installed on the front side, the rear side, the left side and the right side of the bottom plate.

[0018] Realize the longitudinal insertion guidance of the four sides of the aluminum alloy battery tray.

[0019] Further preferably, four hanging rings are installed on the base plate.

[0020] Further preferably, the number of the edge support cylinders is four, and the number of the middle support cylinders is two.

[0021] Further preferably, the line connecting the centers of the three reference blocks forms an isosceles triangle.

[0022] Further preferably, the bisector of the isosceles triangle is located on the mirror symmetry plane of the aluminum alloy battery tray.

[0023] Further preferably, the aluminum alloy battery tray includes a left portion, a middle portion, and a right portion sequentially connected from left to right, wherein the bottom area of ​​the left portion is smaller than the bottom area of ​​the right portion, and the bottom area of ​​the right portion is smaller than the bottom area of ​​the middle portion;

[0024] Two of the three reference blocks are located in the lower areas of the front and rear sides of the middle portion adjacent to the left portion, and the other reference block is located in the lower area of ​​the right portion;

[0025] The guide member is located outside the outer edges of the middle portion and the right portion;

[0026] Two of the four edge support cylinders are located below the front and rear edges of the middle portion, and the other two are located below the front and rear edges of the right portion;

[0027] One of the two middle support cylinders is located below the middle portion, and the other is located below the right portion adjacent to the middle portion.

[0028] Compared with the existing technology, the beneficial effects of the present invention are as follows: through the optimized design of the tooling structure, the aluminum alloy battery tray is fixed and supported in its natural state after welding. Under the influence of welding variables, the processing vibration in other areas is reduced, the machining stability is improved, the scrap rate is reduced, the processing dimensions of mass-produced products are stable, the one-time yield is improved, and costs are reduced and efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of a specific embodiment 1 of the present utility model;

[0030] Figure 2 This is a structural diagram of another embodiment of the present invention from another perspective;

[0031] Figure 3 This is a structural diagram of a specific embodiment of the present invention in which an aluminum alloy battery tray is placed;

[0032] Figure 4 For the specific embodiment 1 of the utility model Figure 3 Schematic diagram of the structure from another perspective.

[0033] In the figure, 1 is the base plate, 2 is the reference block, 3 is the guide member, 4 is the positioning pin, 5 is the rotary downward pressure cylinder, 6 is the middle support cylinder, 7 is the edge support cylinder, and 8 is the auxiliary downward pressure cylinder. DETAILED DESCRIPTION

[0034] See also Figures 1 to 4, Specific embodiment 1, a three-point reference positioning fixed aluminum alloy battery tray machining tool, comprising a base plate 1, a positioning assembly is installed on the base plate 1, the positioning assembly includes a guide 3 and a positioning pin 4 for guiding the aluminum alloy battery tray to be placed from top to bottom; three reference blocks 2 are installed on the base plate 1, and the line connecting the centers of the three reference blocks 2 is a triangle; three rotary downward pressing cylinders 5 are also installed on the base plate 1, and the downward pressing blocks of the rotary downward pressing cylinders 5 correspond one-to-one to the reference blocks 2 and are arranged up and down; at least five supporting cylinders are also installed on the base plate 1, all of which include edge supporting cylinders 7 for supporting the edges of the aluminum alloy battery tray and a middle supporting cylinder 6 for supporting the center of the aluminum alloy battery tray; an auxiliary downward pressing oil cylinder 8 is also installed on the base plate 1, and the number of auxiliary downward pressing oil cylinders 8 and the edge supporting cylinders 7 is the same, and the pressing blocks of the auxiliary downward pressing oil cylinders 8 correspond one-to-one to the telescopic heads of the edge supporting cylinders 7 and are arranged up and down. The utility model optimizes the structure of the machining tooling, establishes a plane based on three points, and ensures that the bottom reference surface of the tooling is in a flat state through three reference blocks 2. The telescopic head of the support cylinder is pushed up to ensure that except for the three reference blocks 2 that ensure the plane, effective supporting force is given to other areas, ensuring the natural state of the battery tray after welding, minimizing the impact on processing variables, and greatly improving machining debugging and mass production yield.

[0035] Two positioning pins 4 are provided, and the two positioning pins 4 are arranged adjacent to the two guide members 3 .

[0036] The guide member 3 includes an inclined guide surface inclined inward from top to bottom and a vertical guide surface arranged vertically, and the inclined guide surface and the vertical guide surface are arranged up and down.

[0037] The guide member 3 includes a guide seat and a support seat arranged above and below. The support seat is provided with a mounting hole, and the guide seat is provided with a waist-shaped hole. The guide seat is connected by bolts passing through the waist-shaped hole and the mounting hole. The inner side surface of the guide seat includes an inclined guide surface and a vertical guide surface. The guiding direction of the waist-shaped hole is perpendicular to the vertical guide surface. There are eight guide members 3. The guide members 3 are installed on the front, rear, left and right sides of the base plate 1. The longitudinal insertion guidance of the aluminum alloy battery tray is realized on all sides. Four lifting rings are installed on the base plate 1. The length direction of the waist-shaped holes of the guide members located on the front and rear sides of the base plate is the front-to-back direction. The length direction of the waist-shaped holes of the guide members located on the left and right sides of the base plate is the left-to-right direction.

[0038] The number of the edge support cylinders 7 is four, and the number of the middle support cylinders 6 is two.

[0039] The aluminum alloy battery tray includes a left portion, a middle portion, and a right portion connected sequentially from left to right. The bottom area of ​​the left portion is smaller than that of the right portion, which in turn is smaller than that of the middle portion. The length of the left portion in the front-to-back direction is smaller than that of the right portion, which in turn is smaller than that of the middle portion. Two of the three reference blocks are located in the lower area of ​​the middle portion adjacent to the front and rear sides of the left portion, and the other reference block is located below the right side area of ​​the right portion. The guide member is located outside the outer edges of the middle and right portions. Two of the four edge support cylinders are located below the front and rear edges of the middle portion, and the other two are located below the front and rear edges of the right portion. One of the two middle support cylinders is located below the middle portion, and the other is located below the right portion adjacent to the middle portion.

[0040] Instructions:

[0041] 1. Use the guide 3 to place the bottom of the aluminum alloy battery tray from top to bottom on the reference block 2. The three reference blocks 2 are fitted with the bottom of the aluminum alloy battery tray. Visually check the gap (the gap detected by the feeler gauge is less than or equal to 0.1mm). A plane can be formed by the three reference points. Release the welding bend and twist, and place it in the natural state after welding.

[0042] 2. Adjust the three downward rotating cylinders to press the three reference blocks at 2 locations. In the pressed state, the battery tray body displacement is less than 0.1MM.

[0043] 3. Under the pressure of the three reference blocks 2, the other suspended areas at the bottom of the aluminum alloy battery tray can be high or low, which is determined by the welding variables. The support cylinders (the middle support cylinder 6 and the edge support cylinder 7) are in motion. The principle of the support cylinders is contact type, that is, when the bottom of the battery tray is touched, the telescopic head stops. The auxiliary downward pressure cylinder 8 is in motion to press the four sides of the aluminum alloy battery tray. The overall flatness and the height variable difference before clamping are no more than 0.1MM. In addition, during the process of the auxiliary downward pressure cylinder 8, no deformation of the aluminum alloy battery tray is visually observed. The processing size of the battery tray during the processing is extremely stable, which is very important for mass production.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A three-point reference positioning fixed aluminum alloy battery tray machining tool, including a bottom plate, characterized in that: A positioning assembly is mounted on the bottom plate, and the positioning assembly includes a guide member and a positioning pin for guiding the aluminum alloy battery tray to be placed from top to bottom; Three reference blocks are installed on the bottom plate, and the line connecting the centers of the three reference blocks forms a triangle; Three rotary downward-pressing cylinders are also installed on the bottom plate, and the downward-pressing blocks of the rotary downward-pressing cylinders correspond one to one with the reference blocks and are arranged up and down; At least five support cylinders are also installed on the bottom plate, and all the support cylinders include edge support cylinders for supporting the edges of the aluminum alloy battery tray and middle support cylinders for supporting the center of the aluminum alloy battery tray; Auxiliary downward pressure cylinders are also installed on the bottom plate. The number of the auxiliary downward pressure cylinders is the same as that of the edge support cylinders, and the pressure blocks of the auxiliary downward pressure cylinders correspond to the telescopic heads of the edge support cylinders in a one-to-one manner and are arranged up and down.

2. The three-point reference positioning fixed aluminum alloy battery tray machining tool according to claim 1, characterized in that: There are two positioning pins, and the two positioning pins are arranged adjacent to the two guide members.

3. The three-point reference positioning fixed aluminum alloy battery tray machining tool according to claim 1, characterized in that: The guide member includes an inclined guide surface inclined inward from top to bottom and a vertical guide surface arranged vertically, and the inclined guide surface and the vertical guide surface are arranged up and down.

4. The three-point reference positioning fixed aluminum alloy battery tray machining tool according to claim 3, characterized in that: The guide member includes a guide seat and a support seat arranged above and below, the support seat is provided with a mounting hole, the guide seat is provided with a waist-shaped hole, and the guide seat is connected by bolts passing through the waist-shaped hole and the mounting hole; The inner side surface of the guide seat includes the inclined guide surface and the vertical guide surface; The guiding direction of the waist-shaped hole is perpendicular to the vertical guiding surface.

5. The three-point reference positioning fixed aluminum alloy battery tray machining tool according to claim 4, characterized in that: There are eight guide members; The guide members are installed on the front side, the rear side, the left side and the right side of the bottom plate.

6. The three-point reference positioning fixed aluminum alloy battery tray machining tool according to claim 1, characterized in that: Four lifting rings are installed on the bottom plate.

7. The three-point reference positioning fixed aluminum alloy battery tray machining tool according to claim 1, characterized in that: The number of the edge support cylinders is four, and the number of the middle support cylinders is two.

8. The three-point reference positioning fixed aluminum alloy battery tray machining tool according to claim 1, characterized in that: The line connecting the centers of the three reference blocks forms an isosceles triangle.

9. The three-point reference positioning fixed aluminum alloy battery tray machining tool according to claim 8, characterized in that: The bisector of the isosceles triangle is located on the mirror symmetry plane of the aluminum alloy battery tray.

10. The three-point reference positioning fixed aluminum alloy battery tray machining tool according to claim 7, characterized in that: The aluminum alloy battery tray includes a left portion, a middle portion, and a right portion sequentially connected from left to right, wherein the bottom area of ​​the left portion is smaller than the bottom area of ​​the right portion, and the bottom area of ​​the right portion is smaller than the bottom area of ​​the middle portion; Two of the three reference blocks are located in the lower areas of the front and rear sides of the middle portion adjacent to the left portion, and the other reference block is located in the lower area of ​​the right portion; The guide member is located outside the outer edges of the middle portion and the right portion; Two of the four edge support cylinders are located below the front and rear edges of the middle portion, and the other two are located below the front and rear edges of the right portion; One of the two middle support cylinders is located below the middle portion, and the other is located below the right portion adjacent to the middle portion.

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