Double-sided processing jig

Abstract

The utility model discloses a double -sided processing jig, including positioning base, the upper setting of positioning base has a plurality of locating block, the setting of profiling locating surface has the recessed surface on corresponding part, the both sides of profiling locating surface are provided with a plurality of locating convex post, the setting of pressing plate is provided on the positioning base, and the pressing plate is pressed in the upper part of part, and the pressing plate is connected with the positioning base through the fastening bolt, the first processing through -groove of setting up corresponding part first cylinder and through -hole is provided on the pressing plate, the second processing through -groove of setting up corresponding part second cylinder is provided on the locating block, the feed through -groove of setting up corresponding second processing through -groove is provided on the positioning base, realizes a jig clamping part, reduces jig cost, spares multiple clamping, improves efficiency, improves processing accuracy, improves the pass rate.

Description

Technical Field

[0001] This utility model belongs to the field of machining fixture technology, and more specifically relates to a double-sided machining fixture. Background Technology

[0002] As the requirements for the opening and closing experience of foldable phones become more and more demanding, the requirements for the hinge assembly inside foldable phones are also becoming more and more demanding. Therefore, the size requirements for the swing arm parts in the hinge assembly are becoming more and more precise and strict. If the size of the parts is not up to standard, the hinge will not open and close smoothly, which will seriously affect the consumer's product experience.

[0003] Figure 5 The image shows the front and back of the swing arm in the pivot assembly. The front is flat with multiple protruding first cylinders for positioning and connection during installation. The back is curved, with a protruding block at one end. A groove is located on the side of the protruding block that is on the same side as the curved surface, and a second cylinder is mounted in the groove. A through hole is also machined into the part (see attached image). Figure 5 The part in the picture has not been machined with through holes (the location of the through hole is marked A). The through hole is located between two of the first cylinders. The traditional machining method is to process it in multiple times using multiple jigs, which results in high jig costs, low efficiency due to repeated clamping, poor machining accuracy, and high defect rate. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a double-sided machining fixture that allows for the clamping of parts in a single fixture, reducing fixture costs, eliminating the need for multiple clamping operations, improving efficiency, increasing machining accuracy, and raising the pass rate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-sided machining fixture, comprising a positioning base, wherein a plurality of positioning blocks are provided on the positioning base, and each positioning block is provided with a contoured positioning surface corresponding to a concave curved surface on a part. A plurality of positioning protrusions are provided on both sides of the contoured positioning surface. A pressure plate is provided on the positioning base, and the pressure plate presses against the part. The pressure plate is connected to the positioning base by fastening bolts. A first machining through groove corresponding to a first cylinder and a through hole of the part is provided on the pressure plate. A second machining through groove corresponding to a second cylinder of the part is provided on the positioning blocks. An infeed through groove corresponding to the second machining through groove is provided on the positioning base.

[0006] Furthermore, the positioning base is provided with a positioning post, and the base is provided with positioning holes corresponding to the positioning post.

[0007] Furthermore, a pressure plate simultaneously presses down on two parts.

[0008] Furthermore, both the positioning base and the positioning block are provided with chip removal holes corresponding to the through holes to be machined on the parts.

[0009] Furthermore, the positioning base is provided with a positioning through hole, and a positioning chamfer is provided at one corner of the positioning base.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the part is positioned by the positioning block, and then the pressure plate is pressed on the part to fix the part. The positioning base is first installed with the front side facing up on the processing equipment to process the part. Then the positioning base is installed with the back side facing up on the processing equipment to process the part. This realizes the clamping of the part with one fixture, reduces the fixture cost, saves multiple clamping, improves efficiency, improves processing accuracy, and improves the pass rate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the front of the double-sided machining fixture of this utility model; Figure 2 This is a schematic diagram of the reverse side of the double-sided processing fixture of this utility model; Figure 3 This is a schematic diagram of the pressure plate in the double-sided processing fixture of this utility model; Figure 4 This is a schematic diagram of the positioning block in the double-sided machining fixture of this utility model; Figure 5 This is a schematic diagram of the front and back structures of the part.

[0012] Reference numerals: 1. Positioning base; 2. Positioning block; 3. Contour positioning surface; 4. Positioning protrusion; 5. Pressure plate; 6. Fastening bolt; 7. First machining through slot; 8. Second machining through slot; 9. Infeed through slot; 10. Positioning post; 11. Positioning hole; 12. Chip removal hole; 13. Positioning through hole; 14. Positioning chamfer; 15. First cylinder; 16. Second cylinder; 17. Part. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. They should not be construed as limiting the specific protection scope of this utility model.

[0014] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0015] Reference Figures 1 to 5 The present invention will be further described below.

[0016] A double-sided machining fixture includes a positioning base 1, on which a plurality of positioning blocks 2 are provided. Each positioning block 2 has a contoured positioning surface 3 corresponding to a concave curved surface on a part 17. A plurality of positioning protrusions 4 are provided on both sides of the contoured positioning surface 3. A pressure plate 5 is provided on the positioning base 1 and presses against the part 17. The pressure plate 5 is connected to the positioning base 1 by fastening bolts 6. The pressure plate 5 has a first machining through groove 7 corresponding to a first cylinder 15 and a through hole on the part 17. The positioning blocks 2 have a second machining through groove 8 corresponding to a second cylinder 16 on the part 17. The positioning base 1 has an infeed through groove 9 corresponding to the second machining through groove 8.

[0017] The side of the positioning base 1 connected to the pressure plate 5 is the front, and the opposite side is the back.

[0018] like Figures 1 to 5 As shown, part 17 is placed on positioning block 2. Part 17 is positioned by the contour positioning surface 3 on positioning block 2 and several positioning blocks 2. Then, pressure plate 5 is pressed on part 17, and the pressure plate 5 exerts a certain clamping force on part 17 by fastening bolt 6, thereby fixing part 17. Then, positioning base 1 is installed on the processing equipment with its front side facing up. The tool can pass through the first processing through groove 7 on the pressure plate 5 to process the cylinder and through hole on part 17. After the front side of positioning base 1 is processed, it is removed and flipped so that its reverse side faces up and is installed on the processing equipment. Then, the second cylinder 16 on part 17 is processed through the second processing through groove 8. Thus, part 17 is clamped by a single fixture, reducing fixture costs, eliminating multiple clamping operations, improving efficiency, improving processing accuracy, and improving the pass rate.

[0019] like Figure 1 and Figure 3 As shown in this example, preferably, the positioning base 1 is provided with a positioning post 10 and a positioning hole 11 corresponding to the positioning post 10. When the pressure plate 5 is placed, the pressure plate 5 is pressed down quickly and accurately through the cooperation of the positioning post 10 and the positioning hole 11.

[0020] like Figure 1As shown in this example, preferably, a pressure plate 5 presses down on two parts 17 simultaneously.

[0021] Specifically, multiple positioning blocks 2 and pressure plates 5 can be set on the positioning base 1 to improve efficiency.

[0022] like Figure 1 As shown in this example, preferably, both the positioning base 1 and the positioning block 2 are provided with chip removal holes 12 corresponding to the through holes to be processed on the part 17. When drilling the part 17, the waste chips can be discharged through the chip removal holes 12.

[0023] like Figure 1 As shown in this example, preferably, the positioning base 1 is provided with a positioning through hole 13, and a positioning chamfer 14 is provided at one corner of the positioning base 1. A positioning rod corresponding to the positioning through hole 13 is provided on the processing table of the processing equipment to quickly position the positioning base 1 on the processing table. The positioning chamfer 14 ensures that the positioning base 1 will not be incorrectly flipped when it is flipped.

[0024] Specifically, the positioning base 1 can be clamped and fixed on the processing table by means of a cylinder or hydraulic cylinder.

[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A double-sided machining fixture, characterized in that: The device includes a positioning base, on which several positioning blocks are provided. Each positioning block has a contoured positioning surface corresponding to a concave curved surface on the part. Several positioning protrusions are provided on both sides of the contoured positioning surface. A pressure plate is provided on the positioning base, pressing on the part. The pressure plate is connected to the positioning base by fastening bolts. The pressure plate has a first machining slot corresponding to a first cylinder and a through hole on the part. The positioning blocks have a second machining slot corresponding to a second cylinder on the part. The positioning base has an infeed slot corresponding to the second machining slot.

2. The double-sided machining fixture according to claim 1, characterized in that: The positioning base is provided with positioning posts, and the base is provided with positioning holes corresponding to the positioning posts.

3. The double-sided machining fixture according to claim 1, characterized in that: A pressure plate holds down two parts at the same time.

4. The double-sided machining fixture according to claim 1, characterized in that: Both the positioning base and the positioning block are provided with chip removal holes corresponding to the through holes to be machined on the parts.

5. The double-sided machining fixture according to claim 1, characterized in that: The positioning base is provided with a positioning through hole, and a positioning chamfer is provided at one corner of the positioning base.

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