A new energy vehicle bracket special processing device and processing method

Abstract

The application relates to the technical field of automobile part machining, in particular to a special machining device and machining method for a bracket of a new energy automobile, which comprises a base, a positioning assembly and a pressing assembly, the base is provided with a through hole for the mounting base to pass through; the positioning assembly is arranged on the base and comprises a positioning block, a cushion block, a first positioning rod and a second positioning rod, is used for taking one end of a flat plate body as a reference, and realizes workpiece positioning by the resistance of different parts of the flat plate body; the pressing assembly comprises a fixed base arranged at a corresponding position of the through hole and a pressing mechanism arranged on the fixed base. The mounting base of the bracket passes through the through hole arranged on the base, the positioning assembly formed by the positioning block, the positioning rod and the cushion block is adopted, one end of the flat plate body is taken as a positioning reference, positioning and clamping of the bracket can be quickly and accurately completed, and the machining of multiple points of the bracket is realized through one-time clamping.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a special machining device and method for new energy vehicle brackets. Background Technology

[0002] As a key structural component, the machining accuracy of the new energy vehicle bracket directly affects the assembly performance and operational safety of the vehicle. For example, the bracket structure disclosed in existing technology CN209320666U consists of a flat plate body and an integrally formed mounting base. The mounting base is a symmetrically arranged plate structure. The flat plate body requires milling the bottom surface and machining connecting holes, while the mounting base requires machining mounting holes and countersunk holes. Traditional machining methods typically design fixtures for single structural forms, either suitable for planar positioning of flat parts or for positioning and clamping of mounting bases, making it difficult to simultaneously meet the machining requirements of this composite structure. Using multiple sets of fixtures for staged positioning requires the workpiece to be transferred between different fixtures during machining, which is not only time-consuming and labor-intensive, but more importantly, repeated disassembly and clamping leads to inconsistent reference points, increased cumulative errors, and makes it difficult to guarantee machining accuracy. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a special processing device and method for new energy vehicle brackets, which solves the technical problems of large positioning errors, low processing efficiency, and easy deformation of the mounting base due to insufficient support during processing caused by repeated clamping in existing technologies.

[0004] The technical solution adopted by this invention to solve its technical problem is: a special processing device for new energy vehicle brackets, used to process brackets including a flat plate body and a mounting base, comprising a base, a positioning component, and a clamping component. The base has a through hole for the mounting base to pass through; A positioning component is disposed on the base. The positioning component includes a positioning block, a pad, a first positioning rod, and a second positioning rod. After the mounting base of the bracket passes through the through hole, the positioning block is used to abut one end of the plate body, the first positioning rod is used to abut the other end of the plate body, and the pad and the second positioning rod are used to support and abut both sides of the plate body. Taking one end of the plate body as the positioning reference, the workpiece is positioned by abutting one end of the plate body against the positioning block. The bracket can be positioned and clamped by the first positioning rod and the second positioning rod. The clamping assembly includes a fixed base located at the position corresponding to the through hole and a clamping mechanism located on the fixed base. The fixed base is used to be positioned between the two mounting bases, and the clamping mechanism is used to clamp the flat plate body to press the bracket onto the base.

[0005] Furthermore, the clamping mechanism includes a screw, a pressure block, and a clamping nut. One end of the screw is connected to the fixed base, and the other end passes through the pressure block and is threadedly connected to the clamping nut. When clamping the plate body, the screw passes through the through hole of the plate body and connects to the pressure block. Then, by tightening the clamping nut, the pressure block is pressed onto the plate body.

[0006] Furthermore, it also includes a support block for abutting against the inner wall of the mounting base. One end of the support block is provided with a contact surface, and the other end is provided with a connecting rod. The support block is movably connected to the fixed base through the connecting rod. A first telescopic spring is sleeved on the end of the connecting rod. One end of the first telescopic spring abuts against the connecting rod, and the other end abuts against the inner wall of the fixed base.

[0007] Furthermore, the fixed base is provided with a snap-fit ​​mechanism. One end of the snap-fit ​​mechanism is in contact with the pressure block, and the other end is provided with a claw. The claw is a wedge-shaped structure. A wedge-shaped space is provided between the fixed base and the support block for the claw to insert into. When the pressure block presses the plate body, the pressure plate simultaneously contacts the snap-fit ​​mechanism and applies a certain force to the snap-fit ​​mechanism, so that the claw of the snap-fit ​​mechanism simultaneously snaps into the wedge-shaped space between the support block and the fixed base, thereby squeezing the support block to move away from the fixed base, so that the contact surface of the support block can contact the inner wall of the mounting base. When machining holes on the mounting base, the support block can provide support under the action of the claw and the fixed base.

[0008] Furthermore, the locking mechanism is sleeved on the outside of the screw, and a second telescopic spring is sleeved on the outside of the screw. One end of the second telescopic spring is connected to the fixed base, and the other end is connected to the locking mechanism. When the claws of the locking mechanism engage with the wedge-shaped space between the support block and the fixed base, the second telescopic spring is compressed. After processing is completed, the clamping mechanism is released, and the second telescopic spring, under its elastic force, applies a certain force to the locking mechanism, facilitating the separation of the claws of the locking mechanism from the wedge-shaped space.

[0009] Furthermore, a clearance hole is provided between the fixed base and the base for the mounting base to pass through, and the clearance hole communicates with the through hole.

[0010] Furthermore, it also includes a flip support unit, which includes a flip bracket and a rotating shaft. The base is rotatably connected to the flip bracket via the rotating shaft so that the base can be flipped. The flip support unit also includes a locking mechanism, which is located between the flip bracket and the base, and is used to lock the base in a horizontal state or a vertical state after flipping 90°. The flip support unit also includes a drive motor, which is located on the flip bracket and is connected to the rotating shaft for driving the base to flip.

[0011] On the other hand, a method for processing a new energy vehicle bracket includes the following steps: 1) The mounting base of the bracket passes through the through hole, so that the fixing base is located between the two mounting bases, and the end of the mounting base protrudes from the through hole; 2) Using one end of the flat plate body of the bracket as the positioning reference, make one end of the flat plate body abut against the positioning block, the pad supports the flat plate body, so that the flat plate body is suspended above the base, the first positioning rod and the second positioning rod abut against the side of the flat plate body, and the pressing mechanism presses the flat plate body onto the base to achieve the positioning and fixing of the bracket. 3) With the base horizontal, the bottom surface of the flat plate and the connecting holes are milled and drilled; 4) Rotate the horizontal base 90° to one side and perform countersinking and drilling on the mounting base on one side; 5) Flip the horizontal base 90° to the other side and countersink and drill holes in the mounting base on the other side.

[0012] Furthermore, after the flat plate body is placed above the pad, the flat plate body is parallel to the upper surface of the base.

[0013] Furthermore, after the mounting base passes through the base, the position of the hole to be machined in the mounting base extends out from the other side of the base.

[0014] The beneficial effects of this invention are as follows: By providing a through hole in the base for the mounting base to pass through, and using a positioning assembly formed by a positioning block, positioning rod, and pad, with one end of the flat plate body as the positioning reference, the invention can quickly and accurately complete the positioning and clamping of the bracket. Simultaneously, a fixed base is provided at the corresponding position of the through hole. Combined with a pressing mechanism and a snap-fit ​​mechanism, during the pressing of the flat plate body by the pressing block, a downward pressing force is applied to the snap-fit ​​mechanism, causing the wedge-shaped claws of the snap-fit ​​mechanism to simultaneously engage with the wedge-shaped space between the fixed base and the support block. Under the action of the inclined surface of the claws, the support block is squeezed outward and tightly abuts against the inner wall of the mounting base. Through the synchronous action of the fixed base, claws, and support block, a stable and reliable support is provided for the cantilevered mounting base, effectively preventing deformation due to stress during processing and ensuring the accuracy of counterboring, drilling, and other machining operations. Furthermore, by switching the base between horizontal and vertical states through the flip support unit, the bottom surface of the flat plate body, the connecting holes, and the hole system of the mounting base on both sides can be processed sequentially after one clamping and fixing, which significantly improves processing efficiency and fundamentally eliminates positioning errors caused by repeated clamping. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2This is the front view of the present invention.

[0017] Figure 3 This is a top view of the present invention.

[0018] Figure 4 yes Figure 3 A cross-sectional view along the AA direction.

[0019] Figure 5 This is a schematic diagram of the pressing mechanism, snap-fit ​​mechanism, and fixed base of the present invention.

[0020] Figure 6 This is a schematic diagram of the bracket structure of the present invention.

[0021] Explanation of reference numerals in the attached figures: 10. Base; 11. Through hole; 20. Positioning component; 21. Positioning block; 22. Pad; 23. First positioning rod; 24. Second positioning rod; 30. Pressing component; 31. Fixed base; 32. Pressing mechanism; 33. Clearing hole; 321. Screw; 322. Pressing block; 323. Pressing nut; 40. Support block; 41. Contact surface; 42. Connecting rod; 43. First telescopic spring; 50. Snap-fit ​​mechanism; 51. Claw; 52. Second telescopic spring; 60. Flip support unit; 100. Bracket; 101. Flat plate body; 102. Mounting base. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0023] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0025] like Figures 1-6 As shown in the figure, this embodiment provides a special processing device for new energy vehicle brackets, used to process brackets including a flat plate body and a mounting base. The processing device includes a base 10, a positioning component 20, and a clamping component 30. The base 10 is provided with a through hole 11 for the mounting base 102 to pass through. The positioning component 20 is mounted on the base 10. The positioning component 20 includes a positioning block 21, a pad block 22, a first positioning rod 23, and a second positioning rod 24. After the mounting base of the bracket passes through the through hole 11, the positioning block 21 is used to abut one end of the plate body 101, the first positioning rod 23 is used to abut the other end of the plate body 101, the pad block 22 is used to support the plate body 101, so that the plate body is suspended above the base and the plate body is horizontal with the upper surface of the base, providing processing space for drilling the plate body. The second positioning rod 24 is used to abut the side of the plate body 101. Taking one end of the plate body 101 as the positioning reference, the workpiece is positioned by the contact between one end of the plate body 101 and the positioning block 21. The bracket 100 can be positioned and clamped by the first positioning rod 23 and the second positioning rod 24. The clamping assembly 30 includes a fixed base 31 located at the corresponding position of the through hole 11 and a clamping mechanism 32 located on the fixed base 31. The fixed base 31 is used to be located between two mounting bases 102, and the clamping mechanism 32 is used to clamp the flat plate body 101 to press the bracket 100 onto the base 10.

[0026] The working principle of this invention is as follows: First, the mounting base 102 of the bracket 100 is passed downward through the through hole 11 of the base 10, so that the plate body 101 rests on the pad 22. At this time, the positioning block 21 abuts against one end of the plate body 101 as the main positioning reference. The first positioning rod 23 and the second positioning rod 24 clamp the plate body 101 from both sides to limit its horizontal displacement. At the same time, the fixing base 31 is naturally inserted into the gap between the two mounting bases 102. Then, the clamping mechanism 32 applies downward force to firmly press the plate body 101 onto the base 10, completing the overall clamping. Then, the machine tool can perform cutting operations on the various surfaces to be machined on the bracket 100. This structural design allows the plate body 101 and the mounting base 102 to be machined on the same set of fixtures with a unified machining reference, completely avoiding the problems of inconsistent references and cumulative errors caused by the conversion of workpieces between different fixtures.

[0027] The clamping mechanism 32 includes a screw 321, a pressure block 322, and a clamping nut 323. One end of the screw 321 is fixedly connected to the fixed base 31, and the other end of the screw 321 extends upward and passes through the pressure block 322 to be threadedly connected to the clamping nut 323. When clamping the plate body 101, the screw 321 passes through a pre-set through hole on the plate body 101, so that the pressure block 322 is positioned above the plate body 101. Then, by tightening the clamping nut 323, the pressure block 322 moves downward and presses against the plate body 101.

[0028] It also includes support blocks 40 for abutting against the inner wall of the mounting base 102. The support blocks 40 are located on both sides of the fixed base 31 and are movably connected to the fixed base 31. Specifically, one end of the support block 40 is provided with an abutting surface 41, and the other end of the support block 40 is provided with a connecting rod 42. The support block 40 is movably connected to the fixed base 31 through the connecting rod 42. A first telescopic spring 43 is sleeved on the end of the connecting rod 42. One end of the first telescopic spring 43 abuts against the end of the connecting rod 42, and the other end of the first telescopic spring abuts against the inner wall of the fixed base 31. The first telescopic spring facilitates the reset of the support block 40.

[0029] The fixed base 31 is provided with a snap-fit ​​mechanism 50. One end of the snap-fit ​​mechanism 50 is in contact with the pressure block 322, and the other end is provided with a claw 51. The claw 51 is wedge-shaped. A wedge-shaped space is provided between the fixed base 31 and the support block 40 for the claw 51 to insert into. When the pressure block 322 presses the flat plate body 101, the pressure block 322 simultaneously abuts against the snap-fit ​​mechanism 50 and applies a certain force to the snap-fit ​​mechanism 50, so that the claw 51 of the snap-fit ​​mechanism 50 simultaneously snaps into the wedge-shaped space between the support block 40 and the fixed base 31, thereby squeezing the support block 40 to move away from the fixed base 31, so that the contact surface of the support block 40 can abut against the inner wall of the mounting base 102. When machining holes or counterbores on the mounting base 102, the combined action of the chuck 51 and the fixed base 31 provides strong internal support to the support block 40, effectively alleviating deformation caused by insufficient support during machining. This significantly improves machining efficiency and quality while ensuring high positioning accuracy. After machining is completed, the clamping nut 323 is loosened and the pressure block 322 is removed. The first telescopic spring 43 releases its elastic potential energy, pushing the connecting rod 42 and the support block 40 to automatically reset, facilitating workpiece disassembly.

[0030] The locking mechanism 50 is sleeved on the outside of the screw 321. A second telescopic spring 52 is sleeved on the outside of the screw 321. One end of the second telescopic spring 52 is connected to the fixed base 31, and the other end is connected to the locking mechanism 50. When the claw 51 of the locking mechanism 50 engages in the wedge-shaped space between the support block 40 and the fixed base 31, the second telescopic spring 52 is compressed. After processing is completed, the clamping mechanism 32 is released, and the second telescopic spring 52 applies a certain force to the locking mechanism 50 under its elastic force, so that the claw 51 of the locking mechanism 50 can disengage from the wedge-shaped space.

[0031] A clearance hole 33 is provided between the fixed base 31 and the base 10 for the mounting base 102 to pass through, and the clearance hole 33 is connected to the through hole 11 of the base 10. The design of the clearance hole 33 provides sufficient clearance space for the mounting base 102 to pass under.

[0032] The system also includes a tilting support unit 60, which comprises a tilting bracket and a rotating shaft. The base 10 is rotatably connected to the tilting bracket via the rotating shaft, enabling the base 10 to tilt. The tilting support unit 60 also includes a locking mechanism located between the tilting bracket and the base 10, used to lock the base 10 in a horizontal position or a vertical position after tilting it 90°. The tilting support unit 60 also includes a drive motor, located on the tilting bracket and connected to the rotating shaft, used to drive the base 10 to tilt. Powered by the drive motor, the base 10 and the bracket 100 clamped on it are tilted as a whole. Combined with the precise locking of the locking mechanism at 0° and 90° positions, the machine tool spindle can sequentially process the horizontal and vertical surfaces of the bracket 100 without changing the machining angle, achieving multi-face machining in a single clamping operation and greatly improving machining efficiency. As a specific implementation, the locking mechanism can employ a hydraulic pin locking mechanism or an electromagnetic brake to ensure that the base 10 does not deflect slightly under heavy cutting conditions.

[0033] This application also provides a method for processing a new energy vehicle bracket, which is implemented based on the processing device described in any of the above embodiments, and specifically includes the following steps:

[0034] 1) The mounting base 102 of the bracket 100 passes through the through hole 11 of the base 10, so that the fixing base 31 is located between the two mounting bases 102, and the end of the mounting base 102 protrudes from the through hole 11. In this step, the position of the hole to be machined in the mounting base 102 protrudes from the other side (i.e., below) of the base 10, so that the tool can be machined from below or the side.

[0035] 2) Using one end of the flat plate body 101 of the bracket 100 as the positioning reference, such as... Figure 6 The A end of the plate body 101 shown serves as a positioning reference, causing one end (A end) of the plate body 101 to abut against the positioning block 21. The pad block 22 supports the plate body 101, suspending it above the base 10. The first positioning rod 23 and the second positioning rod 24 abut against the side of the plate body 101, with the first positioning rod 23 abutting against the B end of the plate body 101. The clamping mechanism 32 presses the plate body 101 firmly onto the base 10, thus fixing the bracket 100 in place. In this state, after the plate body 101 is placed above the pad block 22, the plate body 101 remains parallel to the upper surface of the base 10, ensuring the flatness during subsequent milling of the bottom surface and the machining of the connecting holes on the plate body. Specifically, the screw 321 of the clamping mechanism 32 passes through the hole C of the plate body 101, and the clamping block 322 presses the bracket 100 firmly onto the base 10 through the locking nut 323.

[0036] 3) The base 10 is kept horizontal, and the machine tool cutter performs milling and drilling on the bottom surface and connecting holes of the plate body 101.

[0037] 4) The horizontal base 10 is rotated 90° to one side by driving the rotating shaft by the drive motor and locked by the locking mechanism. The machine tool tool performs counterboring and drilling on the mounting base 102 on one side.

[0038] 5) By driving the motor in reverse, the base 10 is rotated 90° to the other side and locked, and the machine tool cutter performs countersinking and drilling on the mounting base 102 on the other side.

[0039] Through the above methods and steps, the various hardware devices work together to complete the processing of the main key feature surfaces of the bracket 100 under a single clamping reference, completely eliminating positioning errors caused by repeated clamping and ensuring product consistency.

[0040] In addition, it should be noted that the drive motor can also be replaced by a hydraulic motor or a servo cylinder with a gear and rack mechanism, as long as it can achieve the fixed-angle flipping and self-locking of the base 10. This application does not limit it to a single one.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A special processing device for new energy vehicle brackets, used to process brackets including a flat plate body and a mounting base, characterized in that: The base has a through hole for the mounting base to pass through; A positioning component, disposed on the base, includes a positioning block, a pad, a first positioning rod, and a second positioning rod. After the mounting base passes through the through hole, the positioning block is used to abut one end of the plate body, the first positioning rod is used to abut the other end of the plate body, and the pad and the second positioning rod are used to support and abut both sides of the plate body. The clamping assembly includes a fixed base located at the position corresponding to the through hole and a clamping mechanism located on the fixed base. After the mounting base passes through the through hole, the fixed base is located between the two mounting bases. The clamping mechanism is used to clamp the flat plate body to press the bracket onto the base.

2. The special processing device for new energy vehicle brackets according to claim 1, characterized in that: The clamping mechanism includes a screw, a pressure block, and a clamping nut. One end of the screw is connected to the fixed base, and the other end passes through the pressure block and is threadedly connected to the clamping nut.

3. The special processing device for new energy vehicle brackets according to claim 2, characterized in that: It also includes a support block for abutting against the inner wall of the mounting base. One end of the support block is provided with a contact surface, and the other end is provided with a connecting rod. The support block is movably connected to the fixed base through the connecting rod. A first telescopic spring is sleeved on the end of the connecting rod. One end of the first telescopic spring abuts against the connecting rod, and the other end abuts against the inner wall of the fixed base.

4. The special processing device for new energy vehicle brackets according to claim 2, characterized in that: The fixed base is provided with a snap-fit ​​mechanism. One end of the snap-fit ​​mechanism is in contact with the pressure block, and the other end is provided with a snap claw. The snap claw is a wedge-shaped structure, and a wedge-shaped space is provided between the fixed base and the support block for the snap claw to insert into.

5. The special processing device for new energy vehicle brackets according to claim 1, characterized in that: The locking mechanism is sleeved on the outside of the screw, and a second telescopic spring is sleeved on the outside of the screw. One end of the second telescopic spring is connected to the fixed base, and the other end is connected to the locking mechanism.

6. The special processing device for new energy vehicle brackets according to claim 1, characterized in that: A clearance hole is provided between the fixed base and the base for the mounting base to pass through, and the clearance hole communicates with the through hole.

7. The special processing device for new energy vehicle brackets according to claim 1, characterized in that: It also includes a flip support unit, which includes a flip bracket and a rotating shaft. The base is rotatably connected to the flip bracket via the rotating shaft. The flip support unit also includes a locking mechanism located between the flip bracket and the base. The flip support unit also includes a drive motor for driving the base to flip. The drive motor is located on the flip bracket and is connected to the rotating shaft.

8. A processing method using a special processing device for new energy vehicle brackets as described in any one of claims 1-7, characterized in that: Includes the following steps: 1) The mounting base of the bracket passes through the through hole, so that the fixing base is located between the two mounting bases, and the end of the mounting base protrudes from the through hole; 2) Using one end of the flat plate body of the bracket as the positioning reference, make one end of the flat plate body abut against the positioning block, the pad supports the flat plate body, so that the flat plate body is suspended above the base, the first positioning rod and the second positioning rod abut against the side of the flat plate body, and the pressing mechanism presses the flat plate body onto the base to achieve the positioning and fixing of the bracket. 3) With the base horizontal, the bottom surface of the flat plate and the connecting holes are milled and drilled; 4) Rotate the horizontal base 90° to one side and perform countersinking and drilling on the mounting base on one side; 5) Flip the horizontal base 90° to the other side and countersink and drill holes in the mounting base on the other side.

9. A method for processing a new energy vehicle bracket according to claim 8, characterized in that: After the flat plate body is placed above the pad, the flat plate body is parallel to the upper surface of the base.

10. A method for processing a new energy vehicle bracket according to claim 8, characterized in that: After the mounting base passes through the base, the position of the hole to be machined in the mounting base extends out from the other side of the base.

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