Positioning hole processing device for compressor crankshaft

Abstract

The utility model relates to the technical field of compressor crankshaft, disclose positioning hole processingequipment of compressor crankshaft, including support seat, support seat sets in the device shell inner wall, the upper surface fixed connection of support seat has motor no.

Description

Technical Field

[0001] This utility model relates to the field of compressor crankshaft technology, and in particular to a device for machining positioning holes for compressor crankshafts. Background Technology

[0002] Among the core components of an air conditioning compressor, the crankshaft plays a crucial role, its performance directly affecting the compressor's operating efficiency, stability, and lifespan. The machining precision of the positioning holes on the crankshaft is a key factor in ensuring accurate fit between the crankshaft and other components, reducing operational wear, and lowering noise. This is especially true in air conditioning systems used in commercial vehicles, buses, and special vehicles, where the complex operating environment, high vibration levels, and long operating hours place even more stringent requirements on the machining quality of the compressor crankshaft positioning holes.

[0003] Existing crankshaft positioning hole machining devices for air conditioning compressors typically employ a single motor coupled with a gear transmission mechanism. A fixed speed output drives the spindle to rotate, which in turn drives the cutting tool for drilling. The positioning mechanism generally consists of fixed V-blocks or chucks, relying on manual calibration of the alignment between the crankshaft journals and the positioning reference. Clamping components commonly use mechanical screw-type or pneumatic clamping methods. Mechanical screw-type clamping uses a rotating screw to push the jaws to press the workpiece, with the clamping force entirely dependent on the operator's manual control. Tool mounting structures are mostly flange-bolted, with the tool rigidly connected to the tool shaft via multiple bolts. When changing tools, each bolt must be disassembled, the mating surfaces cleaned, and then retightened.

[0004] However, current machining devices for crankshaft positioning holes in air conditioning compressors have revealed numerous problems in practical applications. Regarding workpiece fixation, the fixing components of traditional devices often struggle to handle errors in the crankshaft blank, such as uneven forging allowances or shaft bending. This leads to a shift in the positioning datum, significantly reducing the positional accuracy of the machined positioning holes. Furthermore, to prevent crankshaft displacement during machining, traditional fixing methods often employ excessive clamping force, which can easily cause workpiece deformation, further affecting hole position accuracy and, in severe cases, even leading to crankshaft failure and increased production costs. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a positioning hole processing device for compressor crankshafts, which aims to improve the problem that the positioning reference is easily offset due to crankshaft blank errors such as uneven forging allowance or shaft bending, or workpiece deformation caused by excessive clamping force, thus affecting the hole position accuracy.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a positioning hole processing device for a compressor crankshaft, comprising a device housing, wherein a fixing component is provided on the outer wall of the device housing, and a quick-release component is provided on the inner wall of the device housing; The fixing component includes a support base, which is disposed on the inner wall of the device housing. A motor is fixedly connected to the upper surface of the support base. A bottom disc is fixedly connected to the output end of the motor. A protective shell is fixedly connected to the outer wall of the bottom disc. A hydraulic cylinder is disposed inside the protective shell. A pull rod is fixedly connected to the output end of the hydraulic cylinder. A connecting block is fixedly connected to one end of the pull rod. Two connecting rods are rotatably connected to the outer wall of the connecting block. A fixing block is fixedly connected to one end of each of the two connecting rods. A connecting block is fixedly connected to the other end of each of the two connecting rods. A spring is disposed between the two connecting blocks. A fixing limit cylinder is fixedly connected to one end of the pull rod.

[0007] Furthermore, a limiting plate is provided on the outer wall of the connecting rod, and a protective shell is fixedly connected to one end of the limiting plate. The interior of the protective shell is fixedly connected to the outer wall of the limiting plate, and the connecting rod is slidably connected inside the limiting plate.

[0008] Furthermore, the quick-release assembly includes a quick-release housing 1, a locking housing is threadedly connected to the outer wall of the quick-release housing 1, a spring 2 is provided inside the quick-release housing 1, one end of the spring 2 is fixedly connected to the inner wall of the quick-release housing 1, and a steel ball 1 is fixedly connected to the other end, and a connecting cylinder is slidably connected to the lower surface of the steel ball.

[0009] Furthermore, a spring three is provided inside the quick-release outer shell two. One end of the spring three is slidably connected to the lower surface of the steel ball two, and the other end is slidably connected to the inner wall of the quick-release outer shell two. A blade is fixedly connected to the lower surface of the quick-release outer shell two.

[0010] Furthermore, a water pipe is fixedly connected to the inner wall of the device housing, and the bottom disc is rotatably connected to the inner wall of the device housing.

[0011] Furthermore, a flange is fixedly connected to one end of the protective shell, and a second protective shell is fixedly connected to one end of the flange.

[0012] Furthermore, a mechanical gripper is provided inside the housing of the device, and a motor is also provided inside the housing of the device.

[0013] Furthermore, a steel ball is slidably connected to one end of the connecting cylinder, and a quick-release outer shell is provided on the outer wall of the steel ball, the outer wall of the quick-release outer shell being threadedly connected to the inner wall of the locking outer shell.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the fixing component drives the pull rod to move back and forth through the output power of the hydraulic cylinder, which in turn causes the connecting block to move back and forth. When the connecting block moves the connecting rod, it slides on the fixed limiting cylinder under the action of the connecting block and the spring. The fixing block clamps the crankshaft in the inner wall of the limiting plate. This solves the problem that the fixing component of the traditional device is prone to displacement of the positioning reference due to crankshaft blank errors such as uneven forging allowance or shaft bending, or workpiece deformation due to excessive clamping force, which affects the hole position accuracy.

[0015] 2. In this utility model, the quick-release outer shell 2 is aligned with the lower surface of the quick-release outer shell 1 by hand, and the locking shell is rotated downward to engage the quick-release outer shell 2. At this time, the connecting cylinder applies upward and downward forces to the steel ball 1 and the steel ball 2 respectively, and the spring 1 and the spring 2 contract. When the spring contracts to the critical point, the installation is completed, realizing the quick installation and disassembly of the cutter head. This solves the problem of the traditional device requiring a lot of downtime for cutting tool replacement due to tool wear, and improves production efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the positioning hole processing device for the compressor crankshaft proposed in this utility model; Figure 2 A schematic diagram of a portion of the protective shell of the positioning hole machining device for the compressor crankshaft proposed in this utility model; Figure 3 This is a schematic diagram of a portion of the spring structure of the positioning hole processing device for the compressor crankshaft proposed in this utility model; Figure 4 This is a schematic diagram of the fixed limiting cylinder part of the positioning hole processing device for the compressor crankshaft proposed in this utility model; Figure 5 This is a schematic diagram of the locking housing part of the positioning hole machining device for the compressor crankshaft proposed in this utility model; Figure 6 This is a schematic diagram of the steel ball part of the positioning hole processing device for the compressor crankshaft proposed in this utility model.

[0017] Legend: 1. Device housing; 2. Motor 1; 3. Support base; 4. Protective housing 1; 5. Bottom disc; 6. Flange; 7. Protective housing 2; 8. Connecting block 1; 9. Spring 1; 10. Connecting block 2; 11. Limiting disc; 12. Fixing block 1; 13. Pull rod; 14. Connecting rod; 15. Quick-release housing 1; 16. Spring 2; 17. Steel ball 1; 18. Locking housing; 19. Connecting cylinder; 20. Steel ball 2; 21. Spring 3; 22. Quick-release housing 2; 23. Water pipe; 24. Mechanical claw; 25. Hydraulic cylinder 1; 26. Fixed limiting cylinder; 27. Cutter head. Detailed Implementation

[0018] 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.

[0019] Reference Figure 1 and Figure 4 An embodiment of this utility model provides a positioning hole processing device for a compressor crankshaft, including a device housing 1, a fixing component provided on the outer wall of the device housing 1, and a quick-release component provided on the inner wall of the device housing 1. The fixing assembly includes a support base 3, which is disposed on the inner wall of the device housing 1. A motor 2 is fixedly connected to the upper surface of the support base 3. A bottom disc 5 is fixedly connected to the output end of the motor 2. A protective shell 4 is fixedly connected to the outer wall of the bottom disc 5. A hydraulic cylinder 25 is disposed inside the protective shell 4. A pull rod 13 is fixedly connected to the output end of the hydraulic cylinder 25. A connecting block 10 is fixedly connected to one end of the pull rod 13. Two connecting rods 14 are rotatably connected to the outer wall of the connecting block 10. A fixing block 12 is fixedly connected to one end of each of the two connecting rods 14. A connecting block 8 is fixedly connected to the other end of each of the two connecting rods 14. A spring 9 is disposed between the two connecting blocks 8. A fixing limit cylinder 26 is fixedly connected to one end of the pull rod 13. The wall is equipped with a limiting plate 11, and a protective shell 2 7 is fixedly connected to the limiting plate 11. A spring 3 21 is installed inside the quick-release shell 2 22. One end of the spring 3 21 is slidably connected to the lower surface of the steel ball 2 20, and the other end is slidably connected to the inner wall of the quick-release shell 2 22. A cutter head 27 is fixedly connected to the lower surface of the quick-release shell 2 22. A water pipe 23 is fixedly connected to the inner wall of the device shell 1. A bottom disc is rotatably connected to the inner wall of the device shell 1. A flange 6 is fixedly connected to one end of the protective shell 1 4. A protective shell 2 7 is fixedly connected to one end of the flange 6. A mechanical claw 24 is installed inside the device shell 1. A motor 1 2 is installed inside the device shell 1. The inside of the protective shell 2 7 is fixedly connected to the outer wall of the limiting plate 11. A connecting rod 14 is slidably connected to the inside of the limiting plate 11.

[0020] Specifically, when the crankshaft is fixed using the positioning hole machining device for the compressor crankshaft, the mechanical gripper 24 places the crankshaft to be machined in a suitable position. At the same time, the support base 3 fixes the hydraulic cylinder 25 inside the housing 1 of the device. The hydraulic cylinder 25 is started, and the output power drives the pull rod 13 to move back and forth, causing the connecting block 10 to move back and forth. The fixed limiting cylinder 26 is fixedly connected to the flange 6. When the connecting block 10 moves the connecting rod 14, it slides on the fixed limiting cylinder 26 under the action of the connecting block 8 and the spring 9. The fixed block 12 moves to clamp the crankshaft on the inner wall of the limiting plate 11. The protective shell 4 and the protective shell 7 are used to protect the internal precision instruments. At this time, the motor 2 starts, driving the bottom disc 5 to rotate. The water pipe 23 sprays water to cool down during machining, thus completing the fixing of the crankshaft.

[0021] Reference Figure 5 and Figure 6 The quick-release assembly includes a quick-release outer shell 15, a locking outer shell 18 threadedly connected to the outer wall of the quick-release outer shell 15, a spring 16 inside the quick-release outer shell 15, one end of the spring 16 fixedly connected to the inner wall of the quick-release outer shell 15, and a steel ball 17 fixedly connected to the other end, a connecting cylinder 19 slidably connected to the lower surface of the steel ball 17, a steel ball 20 slidably connected to one end of the connecting cylinder 19, a quick-release outer shell 22 on the outer wall of the steel ball 20, a threaded connection between the outer wall of the quick-release outer shell 22 and the inner wall of the locking outer shell 18, a spring 21 inside the quick-release outer shell 22, one end of the spring 21 slidably connected to the lower surface of the steel ball 20, and the other end slidably connected to the inner wall of the quick-release outer shell 22, and a blade 27 fixedly connected to the lower surface of the quick-release outer shell 22.

[0022] Specifically, when the cutter head 19 needs to be disassembled, the locking housing 18 is turned upwards by hand. The inner wall of the locking housing 18 is threaded. The quick-release housing 15 and quick-release housing 22 are threaded. The cutter head 27 is connected to the quick-release housing 22. Disassembly is completed when the locking housing is completely unscrewed. When replacing, the quick-release housing 22 is aligned with the lower surface of the quick-release housing 15. The locking housing 18 is turned downwards to engage the quick-release housing 22. At this time, the connecting cylinder 19 applies upward and downward forces to the steel balls 17 and 20 respectively. The springs 16 and 21 contract. Installation is completed when they contract to the critical point.

[0023] Working principle: When the crankshaft is fixed using the positioning hole machining device for the compressor crankshaft, the mechanical claw 24 places the crankshaft to be machined in a suitable position. At the same time, the support base 3 fixes the hydraulic cylinder 25 inside the outer shell 1 of the device. The hydraulic cylinder 25 is started, and the output power drives the pull rod 13 to move back and forth, causing the connecting block 10 to move back and forth. The fixed limiting cylinder 26 is fixedly connected to the flange 6. When the connecting block 10 moves the connecting rod 14, it slides on the fixed limiting cylinder 26 under the action of the connecting block 8 and the spring 9. The fixed block 12 clamps the crankshaft on the inner wall of the limiting plate 11. The protective shell 4 and the protective shell 7 are used to protect the internal precision instruments. At this time, the motor 2 starts, driving the bottom disc 5 to rotate. The water pipe 23 sprays water to cool down during processing, thus completing the fixing of the crankshaft. When the cutter head 19 needs to be disassembled, rotate the locking housing 18 upwards by hand. The inner wall of the locking housing 18 is threaded. The quick-release housing 15 and quick-release housing 22 are threaded. The cutter head 27 is connected to the quick-release housing 22. Disassembly is completed when the locking housing is completely unscrewed. When replacing, align the quick-release housing 22 with the lower surface of the quick-release housing 15, and rotate the locking housing 18 downwards to engage the quick-release housing 22. At this time, the connecting cylinder 19 applies upward and downward forces to the steel balls 17 and 20 respectively, and the springs 16 and 21 contract. Installation is completed when they contract to the critical point.

[0024] 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 positioning hole machining device for a compressor crankshaft, comprising a device housing (1) and a quick-release housing two (22), characterized in that: The outer wall of the device housing (1) is provided with a fixing component, and the inner wall of the device housing (1) is provided with a quick-release component; The fixing component includes a support base (3), which is set on the inner wall of the outer shell (1) of the device. A motor (2) is fixedly connected to the upper surface of the support base (3). A bottom disc (5) is fixedly connected to the output end of the motor (2). A protective shell (4) is fixedly connected to the outer wall of the bottom disc (5). A hydraulic cylinder (25) is set inside the protective shell (4). A pull rod (13) is fixedly connected to the output end of the hydraulic cylinder (25). A connecting block (10) is fixedly connected to one end of the pull rod (13). Two connecting rods (14) are rotatably connected to the outer wall of the connecting block (10). A fixing block (12) is fixedly connected to one end of each of the two connecting rods (14). A connecting block (8) is fixedly connected to the other end of each of the two connecting rods (14). A spring (9) is set between the two connecting blocks (8). A fixing limit cylinder (26) is fixedly connected to one end of the pull rod (13).

2. The positioning hole machining device for compressor crankshaft according to claim 1, characterized in that: The outer wall of the connecting rod (14) is provided with a limiting plate (11), and a protective shell (7) is fixedly connected to one end of the limiting plate (11). The interior of the protective shell (7) is fixedly connected to the outer wall of the limiting plate (11), and the connecting rod (14) is slidably connected to the interior of the limiting plate (11).

3. The positioning hole machining device for compressor crankshaft according to claim 1, characterized in that: The quick-release assembly includes a quick-release outer shell (15), a locking outer shell (18) is threadedly connected to the outer wall of the quick-release outer shell (15), a spring (16) is provided inside the quick-release outer shell (15), one end of the spring (16) is fixedly connected to the inner wall of the quick-release outer shell (15), and the other end is fixedly connected to a steel ball (17), and a connecting cylinder (19) is slidably connected to the lower surface of the steel ball (17).

4. The positioning hole machining device for compressor crankshaft according to claim 1, characterized in that: The quick-release outer shell 2 (22) is provided with a spring 3 (21). One end of the spring 3 (21) is slidably connected to the lower surface of the steel ball 2 (20), and the other end is slidably connected to the inner wall of the quick-release outer shell 2 (22). A cutter head (27) is fixedly connected to the lower surface of the quick-release outer shell 2 (22).

5. The positioning hole machining device for compressor crankshaft according to claim 1, characterized in that: A water pipe (23) is fixedly connected to the inner wall of the device housing (1), and the bottom disc is rotatably connected to the inner wall of the device housing (1).

6. The positioning hole machining device for compressor crankshaft according to claim 1, characterized in that: One end of the protective shell (4) is fixedly connected to a flange (6), and one end of the flange (6) is fixedly connected to a protective shell (7).

7. The positioning hole machining device for compressor crankshaft according to claim 1, characterized in that: The device housing (1) is equipped with a mechanical claw (24), and the motor (2) is located inside the device housing (1).

8. The positioning hole machining device for compressor crankshaft according to claim 3, characterized in that: One end of the connecting cylinder (19) is slidably connected to a steel ball (20), and the outer wall of the steel ball (20) is provided with a quick-release outer shell (22), and the outer wall of the quick-release outer shell (22) is threadedly connected to the inner wall of the locking outer shell (18).

Images