Numerical control lathe self-centering rear pulling tool for air conditioner of electric vehicle

Abstract

The utility model relates to the field of fixture and tooling, disclose a numerical control lathe self -centering of electric automobile air conditioning is drawn frock behind, including the inclined draw type self -centering chuck, the end face positioning device is rotatively connected in the inclined draw type self -centering chuck lateral wall, the inclined draw type self -centering chuck lateral wall is provided with lower positioning clamping device, the inclined draw type self -centering chuck lateral wall is provided with upper positioning clamping device, upper positioning clamping device lateral wall is provided with C to clamping device part no.

Description

Technical Field

[0001] This utility model relates to the field of fixtures and tooling, and in particular to a CNC lathe self-centering back-pulling fixture for an electric vehicle air conditioner. Background Technology

[0002] Against the backdrop of the rapid development of the electric vehicle industry, the performance and quality of electric vehicle air conditioning, as a core component, directly affect the comfort and operational stability of the entire vehicle. The balance block in an electric vehicle air conditioning system, as a core cooling component, plays a crucial role in eliminating vibrations, noise, and dynamic balance issues generated by the high-speed rotation of the moving and stationary scroll plates. Its machining accuracy and efficiency are critical to the overall performance of the air conditioning system. CNC lathes, as key equipment for machining such complex rotating parts, have extremely high requirements for clamping fixtures. Therefore, a self-centering and pull-back fixture for CNC lathes used in electric vehicle air conditioning systems, capable of automatic centering, precise clamping, and high efficiency and stability, has emerged to meet the batch processing needs of precision parts such as balance blocks.

[0003] In existing technologies, clamping of similar parts often employs manual clamping or simple mechanical fixtures. Manual clamping relies mainly on operators manually adjusting the part's position and tightening the clamps with tools such as wrenches to secure the workpiece. Simple mechanical fixtures typically consist of a fixed chuck, manually adjustable positioning blocks, and bolt clamping mechanisms. The workpiece is clamped by manually turning a handle to move the clamping components. Positioning depends on the operator's visual inspection and manual calibration of the positioning reference, and power transmission is mostly through pure mechanical levers or lead screws.

[0004] However, existing technologies suffer from cumbersome clamping operations and long processing times, which not only increase processing auxiliary time and reduce production efficiency, but also lead to high labor intensity due to excessive manual intervention, making it difficult to meet the needs of automated mass production. To address these issues, a self-centering back-pulling tooling for CNC lathes used in electric vehicle air conditioners is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a self-centering back-pulling fixture for CNC lathes used for electric vehicle air conditioners, aiming to improve the problems of cumbersome operation, long time consumption, unstable clamping, and insufficient positioning accuracy of traditional clamping fixtures in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A CNC lathe self-centering back-pulling fixture for an electric vehicle air conditioner includes a slanted self-centering chuck, an end face positioning device rotatably connected to the side wall of the slanted self-centering chuck, and a lower positioning clamping device provided on the side wall of the slanted self-centering chuck. As a further description of the above technical solution: The inclined self-centering chuck is provided with an upper positioning clamping device on its side wall, and the upper positioning clamping device is provided with a C-direction clamping device component on its side wall. As a further description of the above technical solution: A C-axis clamping device component two is fixedly connected to one side of the upper positioning clamping device, and a C-axis positioning device component one is fixedly connected to the other side of the upper positioning clamping device. As a further description of the above technical solution: The C-direction positioning device component one is internally fixedly connected to the C-direction positioning device component two, and a butterfly spring is sleeved on one side wall of the C-direction clamping device component; As a further description of the above technical solution: One end of the butterfly spring is fixedly connected to one side wall of the C-direction clamping device component, and the other end of the butterfly spring is fixedly connected to two side walls of the C-direction clamping device component.

[0007] This utility model has the following beneficial effects: In this invention, the inclined self-centering chuck obtains power through the rotary cylinder at the rear end of the spindle. The end face positioning device positions the workpiece in the Z direction. The lower and upper positioning clamping devices move under the action of the inclined pull column inside the chuck, cooperating to achieve self-centering and vertical clamping of the workpiece, preventing it from moving up and down. The C-direction positioning device components one and two position the workpiece in the C direction, ensuring its accuracy. The C-direction clamping device components one and two clamp the workpiece in the C direction under the elastic action of the disc spring. The disc spring adjusts the clamping force to a stable and controllable state. This invention solves the problems of cumbersome operation, long time consumption, unstable clamping, and insufficient positioning accuracy of traditional clamping fixtures. The above technical solution improves clamping efficiency, shortens processing auxiliary time, and reduces labor intensity. Attached Figure Description

[0008] Figure 1 This is a three-dimensional schematic diagram of a CNC lathe self-centering back-pulling tooling for an electric vehicle air conditioner proposed in this utility model.

[0009] Legend: 1. End face positioning device; 2. Lower positioning clamping device; 3. Upper positioning clamping device; 4. C-axis clamping device component one; 5. C-axis clamping device component two; 6. C-axis positioning device component one; 7. C-axis positioning device component two; 8. Disc spring; 9. Inclined self-centering chuck. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] Reference Figure 1 This utility model provides an embodiment of a CNC lathe self-centering back-pull tooling for an electric vehicle air conditioner, including a slanted self-centering chuck 9. The slanted self-centering chuck 9 serves as the main mounting base of the tooling, integrating various components and transmitting power to achieve automatic centering and stable clamping of the workpiece, ensuring the accuracy of the workpiece position during processing. An end face positioning device 1 is rotatably connected to the side wall of the slanted self-centering chuck 9. A lower positioning clamping device 2 is provided on the side wall of the slanted self-centering chuck 9, which is used to initially clamp the workpiece, thereby cooperating with the upper positioning clamping device 3 to fix the workpiece and prevent it from moving during processing. An upper positioning clamping device 3 is provided on the side wall of the slanted self-centering chuck 9, and a C-direction clamping device component 4 is provided on the side wall of the upper positioning clamping device 3. A component is fixedly connected to one side of the upper positioning clamping device 3. C-axis clamping device component 2 5, and C-axis positioning device component 1 6 fixedly connected to the other side of the upper positioning clamping device 3. C-axis positioning device component 2 7 is fixedly connected inside C-axis positioning device component 1 6. C-axis positioning device component 1 6 works in conjunction with C-axis positioning device component 2 7 to perform positioning calibration, achieving the effect of precise positioning of the workpiece in the C-axis and ensuring the positional accuracy of the workpiece in the C-axis. A butterfly spring 8 is sleeved on the side wall of C-axis clamping device component 1 4. One end of the butterfly spring 8 is fixedly connected to the side wall of C-axis clamping device component 1 4, and the other end of the butterfly spring 8 is fixedly connected to the side wall of C-axis clamping device component 2 5. The butterfly spring 8 works in conjunction with C-axis clamping device component 1 4 and C-axis clamping device component 2 5 to perform elastic extension and contraction movement, achieving the effect of stable and adjustable C-axis clamping force, ensuring that the clamping force can meet the processing requirements without damaging the workpiece due to excessive force.

[0012] Working principle: When the CNC lathe is working, the inclined self-centering chuck 9 obtains power through connection with the rotary cylinder at the rear end of the spindle. The end face positioning device 1 positions the axial end face of the workpiece to ensure the accurate Z-axis position of the workpiece. The lower positioning clamping device 2 and the upper positioning clamping device 3 are driven by the inclined tie column inside the inclined self-centering chuck 9 to achieve self-centering and vertical clamping of the workpiece, preventing the workpiece from moving up and down. The C-axis positioning device component 1 6 and the C-axis positioning device component 2 7 position the workpiece in the C-axis to ensure the C-axis position accuracy of the workpiece. At the same time, the C-axis clamping device component 1 4 and the C-axis clamping device component 2 5 clamp the workpiece in the C-axis under the elastic action of the disc spring 8. The disc spring 8 adjusts the clamping force to make it stable and controllable. Finally, by compiling the PLM program and the machining program, the automatic and precise clamping of the workpiece is realized to meet the machining requirements.

[0013] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A CNC lathe self-centering back-pulling fixture for an electric vehicle air conditioner, comprising a slanted self-centering chuck (9), characterized in that: The inclined self-centering chuck (9) is rotatably connected to an end face positioning device (1) on its side wall, and the inclined self-centering chuck (9) is provided with a lower positioning clamping device (2) on its side wall. The inclined self-centering chuck (9) is provided with an upper positioning clamping device (3) on its side wall, and the upper positioning clamping device (3) is provided with a C-direction clamping device component (4) on its side wall. The upper positioning clamping device (3) is fixedly connected to a C-direction clamping device component two (5) on one side, and the upper positioning clamping device (3) is fixedly connected to a C-direction positioning device component one (6) on the other side.

2. The CNC lathe self-centering back-pulling fixture for an electric vehicle air conditioner according to claim 1, characterized in that: The C-direction positioning device component one (6) is internally fixedly connected to the C-direction positioning device component two (7), and the side wall of the C-direction clamping device component one (4) is fitted with a butterfly spring (8).

3. The CNC lathe self-centering back-pulling fixture for an electric vehicle air conditioner according to claim 2, characterized in that: One end of the butterfly spring (8) is fixedly connected to the side wall of the first (4) of the C-direction clamping device component, and the other end of the butterfly spring (8) is fixedly connected to the side wall of the second (5) of the C-direction clamping device component.

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