Machining clamp for peripheral holes of battery box of new energy automobile

Abstract

The utility model discloses a new energy automobile battery box peripheral hole machining clamp which comprises a clamp bottom plate, the clamp bottom plate is arranged in a rectangular shape, supporting feet are fixedly installed at the corner positions of the clamp bottom plate downwards, positioning plates are arranged on the periphery of the clamp bottom plate, a plurality of rotary clamping air cylinders are installed on the outer sides of the positioning plates in a distributed mode, and the rotary clamping air cylinders are arranged on the clamp bottom plate. A cylinder shaft of the rotary clamping cylinder is provided with a pressing plate which can rotate by 90 degrees back and forth, lift up and press down along with the cylinder shaft; a positioning plate position independent adjusting structure is mounted at the lower end of the clamp bottom plate aiming at each positioning plate; the lower end of the clamp bottom plate is further provided with a positioning plate synchronous moving structure used for driving the four positioning plates to move synchronously. The new energy automobile battery box peripheral hole machining clamp has the advantages of being wide in application range, high in hole machining precision and high in automation degree.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tools for processing battery boxes of new energy vehicles, in particular to a fixture for processing peripheral holes of battery boxes of new energy vehicles. Background Art

[0002] A battery pack is a package of batteries. Sometimes the voltage capacity of a single battery cannot meet the needs of users. In this case, the batteries need to be connected in series or parallel. Several batteries in series or parallel plus a battery box form an assembly that can meet user needs, which is a battery pack.

[0003] When processing the peripheral holes of the battery box, in order to facilitate the subsequent assembly, the battery box needs to be clamped and fixed by a fixture to improve the hole processing accuracy.

[0004] At present, there are mainly two types of processing fixtures used to clamp and fix battery boxes:

[0005] 1. The processing fixture includes a base plate, and quick clamps are arranged around the base plate. The battery box is placed on the base plate, and the quick clamps need to be manually operated in sequence to press the battery box onto the base plate. The operation is cumbersome, time-consuming and labor-intensive. After the hole processing is completed, the quick clamps need to be manually operated in sequence to release the pressing of the battery box, which seriously affects the hole processing efficiency;

[0006] 2. See Chinese patent CN 220029464 U, which discloses a new energy vehicle battery box peripheral hole processing fixture, which solves the problem of manual operation and quick clamping, and drives the movement of the clamping plate by the movement of the side plate to clamp the battery box. When used for clamping battery boxes of different sizes, it is necessary to loosen the bolts to adjust the position of the round rods, and it is difficult to ensure that the round rods on both sides are symmetrically arranged along the center of the fixture. The clamping plate clamps the battery box through the elastic force of the spring. During the clamping process, when the positions of the round rods on both sides are asymmetrical, the clamping force applied to the battery box on both sides is different, which will cause elastic floating in the processing process, affecting the processing accuracy of the holes around the battery box, and further affecting the assembly accuracy of the battery box in the later stage. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide a peripheral hole processing fixture for new energy vehicle battery boxes with a wide range of applications, high hole processing accuracy, and high degree of automation.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] A new energy vehicle battery box peripheral hole processing fixture, comprising a fixture bottom plate, the fixture bottom plate is arranged in a rectangular shape, and a support foot is fixedly installed downward at the corner position of the fixture bottom plate.

[0010] The fixture bottom plate is provided with positioning plates all around, and a plurality of rotating clamping cylinders are distributed and installed on the outer side of the positioning plates. A pressing plate capable of rotating 90 degrees back and forth and lifting and pressing down with the cylinder axis is installed on the cylinder axis of the rotating clamping cylinder;

[0011] The lower end of the fixture bottom plate is provided with a positioning plate position independent adjustment structure for each positioning plate;

[0012] A positioning plate synchronous movement structure for driving four positioning plates to move synchronously is also installed at the lower end of the fixture bottom plate.

[0013] In this way, the support legs are provided to facilitate the support of the fixture bottom plate. Before hole processing, the position of the positioning plate is adjusted independently through the positioning plate position independent adjustment structure, and the battery box is moved to the fixture bottom plate by hoisting or manual handling. The positioning plate synchronous movement structure drives the four positioning plates to move synchronously, so that the four positioning plates can synchronously clamp the battery box around. While clamping, the battery box is positioned around. After positioning is completed, the cylinder shaft of the rotary clamping cylinder is rotated 90 degrees and pressed down, driving the pressure plate to press on the battery box, and the machining center performs drilling operations on the holes around the battery box. After processing is completed, the cylinder shaft of the rotary clamping cylinder is rotated 90 degrees in the opposite direction and put on the stage. The pressure plate rotates to the outside of the positioning plate, and the positioning plate synchronous movement structure drives the positioning plate to move outward synchronously to release the clamping of the battery box. After that, the battery box with the hole processing completed can be removed.

[0014] Among them, the independent position adjustment structure of the positioning plate includes a screw box, the upper end of the screw box is opened, a screw is installed in the screw box through a bearing, a servo motor is fixedly installed on the outer end of the screw box, the output shaft of the servo motor passes through the screw box and is fixedly connected to one end of the screw, a nut block is threadedly connected to the screw, the nut block is fixedly connected to the positioning plate, the fixture bottom plate is provided with a clearance groove, the upper end of the nut block is slidably matched with the clearance groove, the lower end of the positioning plate is slidably fitted with the fixture bottom plate, and an external transmission block is fixed to the lower end of the screw box, and the external transmission block is connected to the synchronous movement structure of the positioning plate through a transmission rod.

[0015] Among them, outer guide rails are also provided on both sides of the screw box, and the outer guide rails are fixedly connected to the fixture base plate through external brackets. External sliders are slidably fitted on the outer guide rails, and the lower ends of the two external sliders are fixedly connected through external connecting plates, and the external transmission block is fixedly connected to the external connecting plate.

[0016] Wherein, a guide groove is also provided on the bottom plate of the clamp, a guide rod is fixed in the guide groove, a guide block is slidably fitted on the guide rod, and the upper end of the guide block is fixedly connected to the positioning plate.

[0017] Among them, the synchronous movement structure of the positioning plate includes a cross-shaped hanger, the end of the hanger is bent upward and fixedly connected to the clamp base plate, the four outer ends of the hanger are rotatably installed with end pulleys, the four inner ends of the hanger are rotatably installed with corner pulleys, the end pulleys and the corner pulleys are connected by a synchronous belt, a cylinder is fixedly installed on the clamp base plate, the cylinder rod of the cylinder is fixedly connected to the rack, one of the corner pulleys is coaxially fixedly installed with a gear, the gear and the corner pulley are located on both sides of the hanger, the gear is meshed with the rack, a fixed block is fixedly installed on the synchronous belt, an inner connecting plate is fixedly installed on the fixed block upward, an inner transmission block is fixedly installed on the inner connecting plate, and the end of the transmission rod away from the outer transmission block is fixedly connected to the inner transmission block.

[0018] Wherein, inner guide rails are arranged on both sides of the inner transmission block, the upper ends of the inner guide rails are fixedly connected to the fixture bottom plate through inner brackets, inner sliders are slidably fitted on the inner guide rails, and the inner sliders are fixedly connected to the inner connecting plate.

[0019] The rack is provided with a slide groove, a slide rail is fixedly installed on the hanger, and the rack is slidably matched with the slide rail.

[0020] In summary, the new energy vehicle battery box peripheral hole processing fixture has the advantages of wide application range, high hole processing accuracy and high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a new energy vehicle battery box peripheral hole processing fixture described in the utility model.

[0022] Figure 2 for Figure 1 Another schematic diagram.

[0023] Figure 3 It is a schematic diagram of the positioning plate position independent adjustment structure and the positioning plate synchronous movement structure.

[0024] Figure 4 Partial schematic diagram of the positioning plate position independent adjustment structure and the positioning plate synchronous movement structure.

[0025] Figure 5 for Figure 4 Another schematic diagram.

[0026] Figure 6 A partial schematic diagram of the synchronous movement structure of the positioning plate.

[0027] Figure 7 for Figure 6 Another schematic diagram. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "upper, lower" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0029] like Figure 1-7 As shown, a new energy vehicle battery box peripheral hole processing fixture includes a fixture bottom plate 1, the fixture bottom plate is arranged in a rectangular shape, and a support leg 2 is fixedly installed downward at the corner position of the fixture bottom plate.

[0030] The fixture bottom plate is provided with positioning plates 3 on all sides, and a plurality of rotating clamping cylinders 4 are installed on the outer sides of the positioning plates. A pressing plate capable of rotating 90 degrees back and forth and lifting and pressing down with the cylinder axis is installed on the cylinder axis of the rotating clamping cylinder; the rotating clamping cylinder is a commonly used cylinder for existing clamping and is an existing structure;

[0031] The lower end of the fixture bottom plate is provided with a positioning plate position independent adjustment structure for each positioning plate;

[0032] A positioning plate synchronous movement structure for driving four positioning plates to move synchronously is also installed at the lower end of the fixture bottom plate.

[0033] In this way, the support legs are provided to facilitate the support of the fixture bottom plate. Before hole processing, the position of the positioning plate is adjusted independently through the positioning plate position independent adjustment structure, and the battery box is moved to the fixture bottom plate by hoisting or manual handling. The positioning plate synchronous movement structure drives the four positioning plates to move synchronously, so that the four positioning plates can synchronously clamp the battery box around. While clamping, the battery box is positioned around. After positioning is completed, the cylinder shaft of the rotary clamping cylinder is rotated 90 degrees and pressed down, driving the pressure plate to press on the battery box, and the machining center performs drilling operations on the holes around the battery box. After processing is completed, the cylinder shaft of the rotary clamping cylinder is rotated 90 degrees in the opposite direction and put on the stage. The pressure plate rotates to the outside of the positioning plate, and the positioning plate synchronous movement structure drives the positioning plate to move outward synchronously to release the clamping of the battery box. After that, the battery box with the hole processing completed can be removed.

[0034] During implementation, the positioning plate position independent adjustment structure includes a screw box 11, the upper end of the screw box is open, a screw 12 is installed in the screw box through a bearing, a servo motor 13 is fixedly installed on the outer end of the screw box, the output shaft of the servo motor passes through the screw box and is fixedly connected to one end of the screw, a nut block is threadedly connected to the screw, the nut block is fixedly connected to the positioning plate, the fixture bottom plate is provided with a clearance groove, the upper end of the nut block is slidably matched with the clearance groove, the lower end of the positioning plate is slidably fitted with the fixture bottom plate, and an external transmission block 14 is fixed to the lower end of the screw box, and the external transmission block is connected to the positioning plate synchronous movement structure through a transmission rod.

[0035] In this way, when adjusting the position of the positioning plate alone, the servo motor drives the lead screw to rotate, and the nut block drives the positioning plate to move, and the positioning groove guides the movement of the nut block to achieve the position adjustment of the individual positioning plate. The servo motor drives the lead screw to rotate, which can improve the adjustment accuracy of the positioning plate and further improve the positioning accuracy of the hole processing.

[0036] During implementation, outer guide rails 16 are also provided on both sides of the screw box, and the outer guide rails are fixedly connected to the fixture bottom plate through outer brackets 17. An outer slider 18 is slidably matched on the outer guide rails, and the lower ends of the two outer sliders are fixedly connected through an outer connecting plate 19, and the outer transmission block is fixedly connected to the outer connecting plate, so as to facilitate the support and guidance of the screw box.

[0037] During implementation, a guide groove is provided on the bottom plate of the fixture, a guide rod 21 is fixed in the guide groove, a guide block 22 is slidably fitted on the guide rod, and the upper end of the guide block is fixedly connected to the positioning plate, so as to guide the movement of the positioning plate.

[0038] During implementation, the synchronous movement structure of the positioning plate includes a cross-shaped hanger 31, the ends of the hanger are bent upward and fixedly connected to the fixture base plate, the four outer ends of the hanger are rotatably installed with end pulleys 32, and the four inner ends of the hanger are rotatably installed with corner pulleys 33, the end pulleys and the corner pulleys are connected by a synchronous belt 34, a cylinder 35 is fixedly installed on the fixture base plate, the cylinder rod of the cylinder is fixedly connected to the rack 36, one of the corner pulleys is coaxially fixedly installed with a gear 37, the gear and the corner pulley are located on both sides of the hanger, the gear is meshed with the rack, a fixed block 38 is fixedly installed on the synchronous belt, an inner connecting plate 39 is fixedly installed on the fixed block upward, an inner transmission block 40 is fixedly installed on the inner connecting plate, and the end of the transmission rod away from the outer transmission block is fixedly connected to the inner transmission block.

[0039] In this way, when the four positioning plates need to move synchronously, the positioning plate synchronous movement structure drives the four transmission rods to move synchronously, and the four transmission rods drive the corresponding screw boxes to move synchronously, thereby realizing the synchronous movement of the four positioning plates. Specifically, the cylinder drives the rack to move, and the rack drives the gear meshing therewith and the angle pulley coaxial with the gear to rotate, thereby realizing the movement of the angle pulley, the end pulley and the synchronous belt, and the synchronous belt drives the movement of the fixed block, the inner connecting plate and the inner transmission block, thereby driving the transmission rod to move.

[0040] A single power input can be used to drive the four positioning plates to move synchronously, thereby improving the coordination and stability of the movements.

[0041] During implementation, inner guide rails 41 are provided on both sides of the inner transmission block, the upper ends of the inner guide rails are fixedly connected to the fixture bottom plate through inner brackets, inner sliders 42 are slidably matched on the inner guide rails, and the inner sliders are fixedly connected to the inner connecting plates, so as to support and guide the inner transmission block.

[0042] During implementation, the rack is provided with a slide groove, and a slide rail 43 is fixedly mounted on the hanger, and the rack is slidably matched with the slide rail, so as to guide the movement of the rack.

[0043] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A new energy vehicle battery box peripheral hole processing fixture, comprising a fixture bottom plate, the fixture bottom plate is arranged in a rectangular shape, and the corner position of the fixture bottom plate is fixedly installed with a support foot downward, characterized in that: The fixture bottom plate is provided with positioning plates all around, and a plurality of rotating clamping cylinders are distributed and installed on the outer side of the positioning plates. A pressing plate capable of rotating 90 degrees back and forth and lifting and pressing down with the cylinder axis is installed on the cylinder axis of the rotating clamping cylinder; The lower end of the fixture bottom plate is provided with a positioning plate position independent adjustment structure for each positioning plate; A positioning plate synchronous movement structure for driving four positioning plates to move synchronously is also installed at the lower end of the fixture bottom plate.

2. A new energy vehicle battery box peripheral hole processing fixture according to claim 1, characterized in that: The independent position adjustment structure of the positioning plate includes a screw box, the upper end of the screw box is opened, a screw is installed in the screw box through a bearing, a servo motor is fixedly installed on the outer end of the screw box, the output shaft of the servo motor passes through the screw box and is fixedly connected to one end of the screw, a nut block is threadedly connected to the screw, the nut block is fixedly connected to the positioning plate, the fixture bottom plate is provided with a clearance groove, the upper end of the nut block is slidably matched with the clearance groove, the lower end of the positioning plate is slidably fitted with the fixture bottom plate, and an external transmission block is fixed to the lower end of the screw box, and the external transmission block is connected to the synchronous movement structure of the positioning plate through a transmission rod.

3. A new energy vehicle battery box peripheral hole processing fixture according to claim 2, characterized in that: Outer guide rails are also provided on both sides of the screw box, and the outer guide rails are fixedly connected to the fixture bottom plate through external brackets. Outer sliders are slidably fitted on the outer guide rails, and the lower ends of the two outer sliders are fixedly connected through external connecting plates, and the external transmission block is fixedly connected to the external connecting plate.

4. A new energy vehicle battery box peripheral hole processing fixture according to claim 3, characterized in that: The fixture bottom plate is also provided with a guide groove, a guide rod is fixed in the guide groove, a guide block is slidably matched on the guide rod, and the upper end of the guide block is fixedly connected to the positioning plate.

5. A new energy vehicle battery box peripheral hole processing fixture according to claim 4, characterized in that: The synchronous movement structure of the positioning plate includes a cross-shaped hanger, the end of the hanger is bent upward and fixedly connected to the clamp base plate, the four outer ends of the hanger are rotatably mounted with end pulleys, the four inner ends of the hanger are rotatably mounted with corner pulleys, the end pulleys and the corner pulleys are connected by a synchronous belt, a cylinder is fixedly mounted on the clamp base plate, the cylinder rod of the cylinder is fixedly connected to the rack, one of the corner pulleys is coaxially fixedly mounted with a gear, the gear and the corner pulley are located on both sides of the hanger, the gear is meshed with the rack, a fixed block is fixedly mounted on the synchronous belt, an inner connecting plate is fixedly mounted on the fixed block upward, an inner transmission block is fixedly mounted on the inner connecting plate, and the end of the transmission rod away from the outer transmission block is fixedly connected to the inner transmission block.

6. A new energy vehicle battery box peripheral hole processing fixture according to claim 5, characterized in that: Inner guide rails are arranged on both sides of the inner transmission block, the upper ends of the inner guide rails are fixedly connected to the fixture bottom plate through inner brackets, inner slide blocks are slidably matched on the inner guide rails, and the inner slide blocks are fixedly connected to the inner connecting plate.

7. A new energy vehicle battery box peripheral hole processing fixture according to claim 6, characterized in that: The rack is provided with a slide groove, a slide rail is fixedly installed on the hanger, and the rack is slidably matched with the slide rail.

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