Special center hole puncher for screw air compressor rotor
By designing a multi-dimensional adjustable drilling assembly and a pneumatic linkage clamping structure, the problem of insufficient adaptability and precision of traditional drilling equipment in the machining of screw air compressor rotors has been solved, realizing efficient and precise machining of rotors of various specifications and meeting the mass production needs of screw air compressors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG TAILAN PUMP CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional drilling equipment has poor adaptability, cumbersome clamping, and insufficient processing accuracy in the machining of screw air compressor rotors, making it difficult to meet the mass production needs of rotors with multiple specifications.
A special center hole drilling machine for screw air compressor rotors was designed. It adopts a multi-dimensional adjustable drilling component and a pneumatic linkage clamping structure to achieve rapid and stable clamping and high-precision machining of rotors of various specifications. Through the cooperation of the sliding groove and the slider, the multi-position fixing structure of the groove, combined with the toothed slide rod driven by the cylinder and the gear transmission, the coaxiality and perpendicularity of the center hole are ensured.
It improves equipment adaptability and processing accuracy, simplifies the clamping process, significantly improves operating efficiency and safety, and meets the requirements for large-scale production of screw air compressors.
Smart Images

Figure CN224444655U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw air compressor rotor technology, and in particular to a special center hole drilling machine for screw air compressor rotors. Background Technology
[0002] In the manufacturing of screw air compressors, the rotor is a core component, and the machining accuracy of its center hole directly affects the assembly accuracy and operating efficiency of the air compressor.
[0003] Traditional drilling equipment suffers from poor adaptability, cumbersome clamping, and insufficient processing accuracy, making it difficult to meet the mass production needs of rotors of different specifications.
[0004] In response to this situation, the design requirements of this special drilling machine focus on three points: first, to achieve compatible processing of rotors of various specifications, adapting to rotors of different lengths and diameters through an adjustable structure; second, to improve clamping efficiency and stability, adopting an automated clamping structure to reduce human operation errors; and third, to ensure the machining accuracy of the center hole, reducing the impact of vibration through a double stabilization design, ultimately achieving high efficiency, precision, and standardization in the machining of rotor center holes, meeting the quality requirements of large-scale production of screw air compressors.
[0005] Therefore, we propose a special center hole drilling machine for screw air compressor rotors. Utility Model Content
[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a special center hole drilling machine for screw air compressor rotors.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A special center hole drilling machine for screw air compressor rotor includes a frame, two horizontal plates are fixedly installed on one side of the frame, and a drilling component is installed on the two horizontal plates near the side of the frame. Two brackets are fixedly installed on the upper surface of the frame, and a fixing component is installed on the side of the brackets near the horizontal plates.
[0009] As a further embodiment of this utility model: the punching assembly includes a sliding groove, and each of the two horizontal plates is provided with a sliding groove on the side near the frame. There are four sliding grooves. A slider is slidably connected inside the sliding groove. A bracket is fixedly connected to the side of the slider away from the horizontal plate. The bracket is L-shaped. Two grooves are provided on the side of the four sliding grooves that are close to each other. The bracket is fixedly connected to the grooves by bolts.
[0010] As a further embodiment of this utility model: the bracket has a fixing groove on the side away from the frame, there are three fixing grooves, the fixing grooves are fixedly connected to fixing rods by bolts, the fixing rods are fixedly installed with a drilling machine on the side away from the bracket, a support plate is fixedly installed below the fixing grooves, the support plate is internally threaded with a threaded rod, the bottom end of the threaded rod is fixedly installed with a handle, and the top end of the threaded rod corresponds to the fixing rod.
[0011] As a further embodiment of this utility model: the fixing component includes a fixing plate, the fixing plate is fixedly installed on the side of the frame away from the bracket by bolts, a cylinder is fixedly installed on the side of the fixing plate away from the frame, and two tripods are fixedly installed on the upper surface of the frame.
[0012] As a further embodiment of this utility model: the two tripods are rotatably connected to each other on the side closest to each other, a pressure rod is fixedly installed on the side of the shaft away from the fixed plate, a bolt is threadedly connected to the upper surface of the end of the pressure rod away from the tripod, and a gear is rotatably connected to the side of the two tripods away from each other, and the gear is fixedly connected to the shaft.
[0013] As a further embodiment of this utility model: a toothed slide rod is meshed with the lower surface of the gear, and two limit strips are slidably connected to both sides of the toothed slide rod, and the limit strips are fixedly installed on the upper surface of the frame.
[0014] Compared with the prior art, this utility model provides a special center hole drilling machine for screw air compressor rotors, which has the following beneficial effects:
[0015] The first highlight of this invention is the multi-dimensional adjustment design of the drilling assembly, which greatly improves the adaptability and processing accuracy of the equipment. The device achieves flexible adjustment of the lateral position of the two supports through the sliding cooperation of four sliding grooves and sliders, combined with the multi-position fixing structure of the grooves. The three fixing grooves on the two supports can adjust the vertical movement of the two drilling machines. The two drilling machines have the same structure and drill from both ends of the rotor to meet the hole diameter processing requirements of various rotors. At the same time, the threaded rod on the support plate can be precisely tightened to the fixing rod by rotating the handle, and the bolt fixing forms a double stable structure, which effectively avoids vibration deviation during drilling and ensures the coaxiality and perpendicularity of the center hole processing.
[0016] The second highlight of this invention is the pneumatic linkage clamping structure of the fixing component, which enables rapid and stable clamping of the rotor. The device uses a cylinder to drive a toothed slide rod, which, through the transmission of gears and a rotating shaft, drives the pressure rod to rotate around the triangular frame, completing the clamping action on the rotor. The limiting strips on both sides of the toothed slide rod ensure transmission stability. The bolt at the end of the pressure rod can adjust the clamping force according to the rotor diameter. The gear meshing transmission ensures that the clamping force is evenly distributed, avoiding rotor deformation. This design simplifies the clamping process and can adapt to the processing of rotors of different lengths and diameters, significantly improving work efficiency and safety.
[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the screw air compressor rotor-specific center hole drilling machine proposed in this utility model;
[0019] Figure 2 This is a side cross-sectional view of the drilling assembly for a dedicated center hole drilling machine for screw air compressor rotors proposed in this utility model. Figure 1 ;
[0020] Figure 3 This is a side cross-sectional view of the drilling assembly for a dedicated center hole drilling machine for screw air compressor rotors proposed in this utility model. Figure 2 ;
[0021] Figure 4 This is a three-dimensional structural diagram of the fixing assembly for the special center hole drilling machine for screw air compressor rotor proposed in this utility model.
[0022] In the diagram: 1. Frame; 2. Horizontal plate; 3. Drilling assembly; 4. Bracket; 5. Fixing assembly; 6. Slide groove; 7. Slider; 8. Bracket; 9. Groove; 10. Fixing groove; 11. Fixing rod; 12. Drilling machine; 13. Support plate; 14. Threaded rod; 15. Handle; 16. Fixing plate; 17. Cylinder; 18. Tripod; 19. Shaft; 20. Pressure rod; 21. Gear; 22. Toothed slide rod; 23. Limiting strip. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or 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. Therefore, they should not be construed as limitations on this utility model.
[0025] Example: A special center hole drilling machine for screw air compressor rotors, such as... Figures 1-4 As shown, the system includes a frame 1, with two horizontal plates 2 fixedly installed on one side of the frame 1. Drilling components 3 are installed on the side of the two horizontal plates 2 near the frame 1. Brackets 4 are fixedly installed on the upper surface of the frame 1. There are two brackets 4, and fixing components 5 are installed on the side of the brackets 4 near the horizontal plates 2.
[0026] like Figures 1-4 As shown, the punching assembly 3 includes slide grooves 6. Each of the two horizontal plates 2 near the frame 1 has four slide grooves 6. A slider 7 is slidably connected inside each slide groove 6. A bracket 8 is fixedly connected to the slider 7 away from the horizontal plate 2. The bracket 8 is L-shaped. Two grooves 9 are formed on the side of the four slide grooves 6 closest to each other. The bracket 8 is fixedly connected to the grooves 9 by bolts. Three fixing grooves 10 are formed on the side of the bracket 8 away from the frame 1. Fixing rods 11 are fixedly connected to the fixing grooves 10 by bolts. A punching machine 12 is fixedly installed on the side of the fixing rods 11 away from the bracket 8. A support plate 13 is fixedly installed below the fixing grooves 10. A screw thread is threaded inside the support plate 13. The threaded rod 14 has a handle 15 fixedly installed at its bottom end, and the top end of the threaded rod 14 corresponds to the fixed rod 11. When the drilling machine 12 is working, it is connected to the factory power supply. First, adjust the drilling assembly 3 according to the rotor specifications: slide the slider 7 to drive the bracket 8 to move along the slide groove 6 to a suitable position, fix the bracket 8 to the groove 9 with bolts, select the corresponding fixed groove 10 to install the drilling machine 12, rotate the handle 15 to make the threaded rod 14 press against the fixed rod 11 to enhance stability, after fixing, start the left and right drilling machines 12. The left and right drilling machines 12 are both Z516B models with the same structure and are commercially available products. The center hole of the rotor is processed by the two drilling machines 12.
[0027] like Figures 1-3As shown, the fixing component 5 includes a fixing plate 16. The fixing plate 16 is bolted to the side of the frame 1 away from the bracket 4. A cylinder 17 is fixedly installed on the fixing plate 16 away from the frame 1. Two tripods 18 are fixedly installed on the upper surface of the frame 1. The two tripods 18 are rotatably connected to the side of the two tripods 18 that are close to each other. A pressure rod 20 is fixedly installed on the side of the shaft 19 away from the fixing plate 16. A bolt is threaded to the upper surface of the end of the pressure rod 20 away from the tripod 18. The two tripods 18 are rotatably connected to the side that is far from each other by a toothed joint. The wheel 21 and gear 21 are fixedly connected to the rotating shaft 19. The lower surface of the gear 21 is meshed with a toothed slide rod 22. Limiting strips 23 are slidably connected on both sides of the toothed slide rod 22. There are two limiting strips 23. The limiting strips 23 are fixedly installed on the upper surface of the frame 1. By operating the fixing component 5, the rotor is placed on the bracket 4. The starting cylinder 17 pushes the toothed slide rod to move along the limiting strips 23. The slide rod drives the gear 21 to rotate. The gear 21 causes the pressure rod 20 to flip downward through the rotating shaft 19. The bolt at the end of the pressure rod 20 presses the rotor surface to complete the fixation.
[0028] Working principle: When the drilling machine 12 is working, it is connected to the factory power supply. First, adjust the drilling component 3 according to the rotor specifications: the sliding slider 7 drives the bracket 8 to move along the slide groove 6 to a suitable position. The bracket 8 is fixed to the groove 9 by bolts. Select the corresponding fixing groove 10 to install the drilling machine 12. Rotate the handle 15 to make the threaded rod 14 press against the fixing rod 11 to enhance stability. Then operate the fixing component 5 to place the rotor on the bracket 4. Start the cylinder 17 to push the toothed slide rod to move along the limit bar 23. The slide rod drives the gear 21 to rotate. The gear 21 causes the pressure rod 20 to flip downward through the rotating shaft 19. The bolt at the end of the pressure rod 20 presses the rotor surface to complete the fixation. After the fixation is completed, start the left and right drilling machines 12. The left and right drilling machines 12 are both Z516B models with the same structure and are commercially available products. The center hole of the rotor is processed by the two drilling machines 12. After the processing is completed, the cylinder 17 is reset, the pressure rod 20 is released, and the processed rotor can be removed.
[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A special center hole punch for screw air compressor rotor, comprising a frame (1), characterized in that A horizontal plate (2) is fixedly installed on one side of the frame (1). There are two horizontal plates (2). A punching component (3) is installed on the side of the two horizontal plates (2) near the frame (1). A bracket (4) is fixedly installed on the upper surface of the frame (1). There are two brackets (4). A fixing component (5) is installed on the side of the brackets (4) near the horizontal plate (2).
2. The screw air compressor rotor special center hole puncher according to claim 1, characterized in that The punching assembly (3) includes a sliding groove (6). Each of the two horizontal plates (2) is provided with a sliding groove (6) on the side near the frame (1). There are four sliding grooves (6). A slider (7) is slidably connected inside the sliding groove (6). A bracket (8) is fixedly connected to the side of the slider (7) away from the horizontal plate (2). The bracket (8) is L-shaped. Two grooves (9) are provided on the side of the four sliding grooves (6) that are close to each other. The bracket (8) is fixedly connected to the grooves (9) by bolts.
3. The screw air compressor rotor-specific center hole drilling machine according to claim 2, characterized in that... The bracket (8) has a fixing groove (10) on the side away from the frame (1). There are three fixing grooves (10). The fixing grooves (10) are fixedly connected to fixing rods (11) by bolts. A drilling machine (12) is fixedly installed on the side of the fixing rod (11) away from the bracket (8). A support plate (13) is fixedly installed below the fixing groove (10). A threaded rod (14) is threadedly connected inside the support plate (13). A handle (15) is fixedly installed at the bottom of the threaded rod (14). The top of the threaded rod (14) corresponds to the fixing rod (11).
4. The screw air compressor rotor special center hole puncher according to claim 3, characterized in that The fixing component (5) includes a fixing plate (16). The fixing plate (16) is fixedly installed on the side of the frame (1) away from the bracket (4) by bolts. A cylinder (17) is fixedly installed on the side of the fixing plate (16) away from the frame (1). Two tripods (18) are fixedly installed on the upper surface of the frame (1).
5. The screw air compressor rotor special center hole puncher of claim 4, wherein Two tripods (18) are rotatably connected to a pivot (19) on their side of proximity. A pressure rod (20) is fixedly installed on the side of the pivot (19) away from the fixed plate (16). A bolt is threaded onto the upper surface of the end of the pressure rod (20) away from the tripod (18). A gear (21) is rotatably connected to the two tripods (18) on their side of distance from each other. The gear (21) is fixedly connected to the pivot (19).
6. The screw air compressor rotor special center hole puncher of claim 5, wherein The gear (21) has a toothed slide rod (22) meshing with its lower surface. The toothed slide rod (22) has two limit bars (23) slidably connected to its two sides. The limit bars (23) are fixedly installed on the upper surface of the frame (1).