Machining device for rotor casting of refrigeration compressor

Abstract

The invention discloses a refrigeration compressor rotor casting processing device, and relates to a casting processing device, the refrigeration compressor rotor casting processing device comprises a processing table, the bottom of the processing table is fixedly connected with a shaft seat, the shaft seat is rotatably connected with two lower rotating shafts, the end parts of the two lower rotating shafts are fixedly connected with engaged first gears, one lower rotating shaft is in transmission connection with a first motor, and the other lower rotating shaft is in transmission connection with a second motor. Connecting frames are rotationally connected to the two ends of the outer side of the lower rotating shaft correspondingly, second gears are fixedly connected to the connecting frames, the second gears on the same side are meshed with each other, and a driving unit for driving one second gear to rotate is further fixedly connected to the bottom of the machining table. The compressor rotor surface polishing and casting automatic change are achieved through coordinated driving of the first motor, the second motor and the electric telescopic rod, two inclined planes arranged on the rotor surface can be polished at the same time in cooperation with two inclined polishing belts, the included angle between the two polishing belts can be adjusted, and the compressor rotor surface polishing device is suitable for different castings.

Description

Technical Field

[0001] This invention relates to a casting processing apparatus, specifically a refrigeration compressor rotor casting processing apparatus. Background Technology

[0002] As the core power component of a refrigeration system, the machining accuracy of the rotor casting of a refrigeration compressor directly affects the compressor's operational stability, refrigeration efficiency, and service life. Some compressor rotors have two symmetrical inclined planes on their surface. This structural design optimizes the rotor's dynamic balance performance and gas compression efficiency, thus imposing stringent requirements on the grinding accuracy, consistency, and machining adaptability of these two inclined planes.

[0003] Currently, the grinding of the inclined planes of refrigeration compressor rotor castings mostly employs traditional processing equipment and processes, which have many technical shortcomings. On the one hand, the existing equipment has a low degree of automation, with most processes relying on manual assistance. This requires not only manual adjustment of the rotor casting's posture to achieve the grinding of the inclined planes, but also manual intervention for position calibration during the grinding process. This results in low processing efficiency and high labor costs. Furthermore, the subjectivity of manual operation can easily lead to deviations in grinding accuracy, making it difficult to guarantee the symmetry and surface roughness consistency of the two inclined planes, which affects subsequent rotor assembly and the overall operating performance of the compressor.

[0004] On the other hand, the existing grinding equipment has limitations in its structural design. Grinding the two inclined planes on the rotor surface often involves a single grinding mechanism processing them in stages, making simultaneous grinding of both planes impossible. This further reduces processing efficiency, and the staged grinding process easily leads to cumulative errors, exacerbating the problem of insufficient processing accuracy. Some equipment with dual grinding mechanisms has a fixed installation angle for the grinding belt, making it impossible to flexibly adjust according to the angle requirements of the inclined planes of different rotor casting specifications. This results in extremely poor adaptability; each time a different rotor casting specification is changed, the corresponding grinding fixture must be replaced or the overall equipment structure adjusted, making operation cumbersome, reducing equipment versatility, and increasing production costs. Summary of the Invention

[0005] The purpose of this invention is to provide a refrigeration compressor rotor casting processing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A processing device for a refrigeration compressor rotor casting includes a processing table. A bearing seat is fixedly connected to the bottom of the processing table, and two lower rotating shafts are rotatably connected to the bearing seat. The ends of the two lower rotating shafts are fixedly connected to meshing first gears. One of the lower rotating shafts is connected to a first motor for transmission. Connecting frames are rotatably connected to both ends of the outer side of the lower rotating shaft. Second gears are fixedly connected to each connecting frame. The second gears on the same side mesh with each other. A drive unit for driving one of the second gears to rotate is also fixedly connected to the bottom of the processing table. An upper rotating shaft is rotatably connected to the end of the connecting frame away from the lower rotating shaft. Rollers are fixedly connected to the outer side of both the upper and lower rotating shafts. A grinding belt is sleeved between the rollers. A clamping assembly is also provided on the side of the processing table. The casting is clamped by the clamping assembly and simultaneously engages with the two grinding belts.

[0007] As a further aspect of the present invention: the driving unit includes an electric telescopic rod, the output end of which is fixedly connected to a rack, and the rack meshes with one of the second gears.

[0008] As a further embodiment of the present invention: the fixture assembly includes a slider that is slidably connected to the processing table, a V-shaped support member that is fixedly connected to the slider, a top fixing unit that is fixedly connected to the side of the V-shaped support member, and a side fixing unit that is provided along the direction of movement of the V-shaped support member.

[0009] As a further embodiment of the present invention: the top fixing unit includes a fixing base frame fixed to the side of the V-shaped support member, a pressure screw is threadedly connected to the fixing base frame, and a pressure plate is fixedly connected to the bottom of the pressure screw.

[0010] As a further embodiment of the present invention: a drive crossbar is slidably connected to the top of the pressure screw.

[0011] As a further embodiment of the present invention: the side fixing unit includes a guide rod fixed to the side of the V-shaped support member, an auxiliary fixing bracket is slidably connected to the side of the guide rod, the auxiliary fixing bracket is V-shaped, and a locking nut for locking the auxiliary fixing bracket is threaded to the outside of the guide rod.

[0012] As a further embodiment of the present invention: a second motor is fixedly connected to the bottom of the processing table, and a displacement screw is drivenly connected to the rotor of the second motor, and the bottom of the slider is threadedly connected to the displacement screw.

[0013] As a further embodiment of the present invention, it also includes a V-shaped pad, which is movably placed on a V-shaped support or auxiliary fixing bracket.

[0014] As a further embodiment of the present invention: the processing table includes a support bracket and an upper table surface, the upper table surface is fixedly connected to the support bracket, and the bottom of the support bracket is threaded with support feet for adjusting the height of the upper table surface.

[0015] As a further aspect of the present invention, it also includes a control panel for the control device.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a simple structure and a high degree of automation. The surface grinding of the compressor rotor is achieved by the coordinated drive of the first motor, the second motor and the electric telescopic rod. The casting changes automatically. With the help of two inclined grinding belts, two inclined planes on the rotor surface can be ground at the same time. The included angle of the two grinding belts can be adjusted, making it suitable for different castings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a refrigeration compressor rotor casting processing device.

[0018] Figure 2 This is a schematic diagram of a refrigeration compressor rotor casting processing device from another perspective.

[0019] Figure 3 This is a schematic diagram of the elevation angle position of a refrigeration compressor rotor casting machining device.

[0020] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle.

[0021] Figure 5 This is a partially enlarged view of the position of the first motor in a refrigeration compressor rotor casting machining device.

[0022] Figure 6 This is a partially enlarged view of the position of the second motor in a refrigeration compressor rotor casting machining device.

[0023] Figure 7 This is a partially enlarged view of the casting position in a refrigeration compressor rotor casting processing device.

[0024] Figure 8 This is a schematic diagram of the structure of a casting in a refrigeration compressor rotor casting processing device.

[0025] Figure 9 This is a schematic diagram of the structure of a V-shaped pad block in a refrigeration compressor rotor casting processing device.

[0026] In the diagram: 1. Machining table; 2. Shaft seat; 3. Lower rotating shaft; 4. First gear; 5. First motor; 6. Connecting frame; 7. Second gear; 8. Drive unit; 9. Upper rotating shaft; 10. Roller shaft; 11. Grinding belt; 12. Fixture assembly; 13. Electric telescopic rod; 14. Rack; 15. Slider; 16. V-shaped support; 17. Top fixing unit; 18. Side fixing unit; 19. Fixed base frame; 20. Pressure screw; 21. Pressure plate; 22. Drive crossbar; 23. Guide rod; 24. Auxiliary fixing bracket; 25. Locking nut; 26. Second motor; 27. Displacement screw; 28. V-shaped pad; 29. ​​Support bracket; 30. Upper table surface; 31. Support foot. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0029] 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Please refer to the attached drawings. A refrigeration compressor rotor casting processing device, with a processing table 1 as the core load-bearing structure, is composed of a support transmission mechanism, a grinding execution mechanism, a fixture positioning mechanism, and auxiliary adjustment components. These mechanisms work together to achieve precise grinding of the rotor casting. The processing table 1 itself includes two main components: a support bracket 29 and an upper table surface 30. The upper table surface 30 and the support bracket 29 are fixedly connected to form a solid load-bearing foundation. To adapt to the height requirements of different processing scenarios, the bottom of the support bracket 29 is threaded with support feet 31. By rotating the support feet 31, the horizontal height of the upper table surface 30 can be flexibly adjusted to ensure the stability and processing accuracy of the device during operation.

[0032] To facilitate the installation and operation of the grinding mechanism, a bearing seat 2 is fixedly connected to the bottom of the processing table 1. The bearing seat 2 serves as the core rotating support component, and two parallel lower rotating shafts 3 are rotatably connected to it. A first gear 4 is fixedly connected to the end of each of the two lower rotating shafts 3, and the two first gears 4 mesh with each other. This meshing design ensures that the two lower rotating shafts 3 rotate synchronously in opposite directions. Simultaneously, one of the lower rotating shafts 3 is connected to a first motor 5. When the first motor 5 starts, it drives the two lower rotating shafts 3 to rotate synchronously through the meshing first gear 4, providing the basic power for subsequent grinding operations.

[0033] Connecting brackets 6 are rotatably connected to both ends of the lower rotating shaft 3. These connecting brackets 6 can rotate around the lower rotating shaft 3 at a certain angle, thereby changing the working posture of the grinding mechanism. A second gear 7 is fixedly connected to each connecting bracket 6, and the two second gears 7 on the same side mesh with each other to ensure that the rotation of the connecting brackets 6 on both sides remains synchronized. To drive the rotation of the connecting brackets 6, a drive unit 8 is also fixedly connected to the bottom of the processing table 1. This drive unit 8 is specifically used to drive one of the second gears 7 to rotate, and the angle adjustment of the connecting bracket 6 is achieved through the meshing transmission of the second gear 7.

[0034] Specifically, the drive unit 8 consists of an electric telescopic rod 13 and a rack 14. The electric telescopic rod 13 is fixed to the bottom of the processing table 1, and its output end is fixedly connected to the rack 14. The rack 14 is engaged with one of the second gears 7. When the electric telescopic rod 13 extends or retracts, it drives the rack 14 to move linearly. The rack 14 then drives the engaged second gear 7 to rotate. Through gear transmission, the connecting frame 6 is rotated, ultimately achieving precise adjustment of the height and angle of the grinding mechanism to adapt to the grinding requirements of rotor castings of different specifications.

[0035] The end of the connecting frame 6 furthest from the lower rotating shaft 3 is rotatably connected to the upper rotating shaft 9. Roller shafts 10 are fixedly connected to the outer sides of both the upper rotating shaft 9 and the lower rotating shaft 3. A grinding belt 11 is sleeved between the two corresponding roller shafts 10, forming an independent grinding unit. Since there are two such grinding mechanisms in the device, when the first motor 5 drives the lower rotating shaft 3 to rotate, it will drive the grinding belt 11 to rotate at high speed through the roller shafts 10. At the same time, the angle adjustment of the connecting frame 6 can change the tilt angle and tension of the grinding belt 11, ensuring that the grinding belt 11 can fit tightly against the surface of the casting and improve the grinding effect.

[0036] To achieve stable positioning of the rotor casting, a clamping assembly 12 is also provided on the side of the machining table 1. Under the precise clamping of the clamping assembly 12, the casting can simultaneously engage with two grinding belts 11, thereby achieving synchronous grinding operations on both sides of the casting and significantly improving processing efficiency. The core drive of the clamping assembly 12 comes from the second motor 26 at the bottom of the machining table 1. A displacement screw 27 is driven by the rotor of the second motor 26. The displacement screw 27 can be rotated by the drive of the second motor 26, providing power for the movement of the clamping assembly 12.

[0037] Specifically, the fixture assembly 12 includes a slider 15 slidably connected to the upper surface 30 of the machining table 1. The bottom of the slider 15 is threadedly connected to the displacement screw 27. When the displacement screw 27 rotates under the drive of the second motor 26, it will drive the slider 15 to move horizontally along the machining table 1, thereby driving the fixture assembly 12 to adjust its overall position, so that the clamped casting is accurately aligned with the working area of ​​the two grinding belts 11 and moves within the grinding area to achieve grinding. A V-shaped support 16 is fixedly connected to the slider 15. The V-shaped structure can adapt to the arc-shaped surface of the rotor casting, providing stable bottom support and preventing the casting from shifting during the grinding process.

[0038] To further enhance the fixing effect on the casting, the V-shaped support 16 is provided with a top fixing unit 17 and a side fixing unit 18 on its sides. The side fixing unit 18 is arranged along the moving direction of the V-shaped support 16 and forms a three-dimensional fixing structure with the top fixing unit 17, limiting the casting from different directions. The top fixing unit 17 includes a fixing base 19 fixed to the side of the V-shaped support 16. A pressure screw 20 is threaded onto the fixing base 19. The pressure screw 20 can move up and down on the fixing base 19 by rotation. A pressure plate 21 is fixedly connected to its bottom. When the pressure screw 20 moves downward, the pressure plate 21 will tightly fit against the top of the casting to achieve top clamping and fixing.

[0039] To facilitate quick rotation of the pressure screw 20 by the operator, a drive crossbar 22 is slidably connected to the top of the pressure screw 20. The operator can rotate the drive crossbar 22 to drive the pressure screw 20 to rotate synchronously. Compared with directly rotating the pressure screw 20, this structure saves manpower and improves the accuracy of pressure adjustment. The side fixing unit 18 includes a guide rod 23 fixed to the side of the V-shaped support 16. An auxiliary fixing bracket 24 is slidably connected to the side of the guide rod 23. The auxiliary fixing bracket 24 also adopts a V-shaped structure and can cooperate with the V-shaped support 16 to form a clamping effect on both sides, further restricting the horizontal displacement of the casting.

[0040] To secure the auxiliary fixing bracket 24, a locking nut 25 is threaded onto the outer side of the guide rod 23. Once the auxiliary fixing bracket 24 has slid to the appropriate position, tightening the locking nut 25 will firmly lock it onto the guide rod 23, preventing loosening during grinding. The auxiliary fixing bracket 24 and the V-shaped support 16 are positioned on either side of the stepped shaft outside the casting's rotating shaft. Furthermore, the device is equipped with a V-shaped pad 28, which can be flexibly selected according to the casting's size and specifications. The pad can be movably placed on the V-shaped support 16 or the auxiliary fixing bracket 24 to adjust the casting's support height and contact area, enabling the device to adapt to the processing of rotor castings of different sizes and improving its versatility.

[0041] To achieve centralized control of all mechanisms within the entire device, the system also includes a control panel. Operators can use the control panel to control the start / stop and operating parameters of the first motor 5, the second motor 26, and the electric telescopic rod 13, thereby adjusting the speed of the grinding belt 11, the moving position of the clamping assembly 12, and the tilting angle of the connecting frame 6, achieving automated and precise machining. Overall, through the coordinated operation of its components, the device ensures the clamping stability of the rotor casting while achieving efficient and precise grinding operations. It also possesses good versatility and adjustment flexibility, making it suitable for machining various specifications of refrigeration compressor rotor castings.

[0042] Working principle: The first motor 5 drives the lower rotating shaft 3 to rotate. With the help of the meshing first gear 4, the two lower rotating shafts 3 rotate synchronously in opposite directions, which in turn drives the grinding belt 11 to rotate at high speed through the roller shaft 10, forming the core of the grinding power. The electric telescopic rod 13 extends and retracts, driving the rack 14 to move. The rack 14 drives the meshing second gear 7 to rotate, and the linkage connecting frame 6 flips, adjusting the position of the upper rotating shaft 9 and the corresponding roller shaft 10, thereby changing the angle of the grinding belt 11 to ensure precise fit with the casting.

[0043] The second motor 26 drives the displacement screw 27 to rotate, driving the slider 15 and the clamping assembly 12 to move horizontally, sending the casting to the working area of ​​the grinding belt 11, and performing grinding by reciprocating motion within the working area. The rotating pressure screw 20 drives the pressure plate 21 to move down and press the top of the casting, while the sliding auxiliary fixing bracket 24 clamps the casting from the side, achieving stable positioning.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A processing apparatus for a refrigeration compressor rotor casting, comprising a processing table (1), characterized in that, The bottom of the processing table (1) is fixedly connected to a bearing seat (2), and two lower rotating shafts (3) are rotatably connected to the bearing seat (2). The ends of the two lower rotating shafts (3) are fixedly connected to meshing first gears (4). One of the lower rotating shafts (3) is connected to the first motor (5) for transmission. The two ends of the lower rotating shaft (3) are rotatably connected to connecting frames (6). The connecting frames (6) are fixedly connected to second gears (7). The second gears (7) on the same side mesh with each other. The bottom of the processing table (1) is also fixedly connected to a drive unit (8) that drives one of the second gears (7) to rotate. The end of the connecting frame (6) away from the lower rotating shaft (3) is rotatably connected to an upper rotating shaft (9). The upper rotating shaft (9) and the lower rotating shaft (3) are both fixedly connected to rollers (10). A grinding belt (11) is sleeved between the rollers (10). A clamping assembly (12) is also provided on the side of the processing table (1). The casting is clamped by the clamping assembly (12) and simultaneously cooperates with the two grinding belts (11).

2. The refrigeration compressor rotor casting processing device according to claim 1, characterized in that, The drive unit (8) includes an electric telescopic rod (13), and a rack (14) is fixedly connected to the output end of the electric telescopic rod (13). The rack (14) meshes with one of the second gears (7).

3. The refrigeration compressor rotor casting processing device according to claim 1, characterized in that, The fixture assembly (12) includes a slider (15) slidably connected to the processing table (1), a V-shaped support (16) fixedly connected to the slider (15), a top fixing unit (17) fixedly connected to the side of the V-shaped support (16), and a side fixing unit (18) provided along the direction of movement of the V-shaped support (16).

4. The refrigeration compressor rotor casting processing device according to claim 3, characterized in that, The top fixing unit (17) includes a fixing base (19) fixed to the side of the V-shaped support (16), a pressure screw (20) is threaded on the fixing base (19), and a pressure plate (21) is fixedly connected to the bottom of the pressure screw (20).

5. The refrigeration compressor rotor casting processing device according to claim 4, characterized in that, The top of the pressure screw (20) is slidably connected to a drive crossbar (22).

6. The refrigeration compressor rotor casting processing device according to claim 3, characterized in that, The side fixing unit (18) includes a guide rod (23) fixed to the side of the V-shaped support (16). An auxiliary fixing bracket (24) is slidably connected to the side of the guide rod (23). The auxiliary fixing bracket (24) is V-shaped. A locking nut (25) for locking the auxiliary fixing bracket (24) is threaded to the outside of the guide rod (23).

7. The refrigeration compressor rotor casting processing device according to claim 3, characterized in that, The bottom of the processing table (1) is also fixedly connected to a second motor (26), and a displacement screw (27) is driven on the rotor of the second motor (26). The bottom of the slider (15) is threadedly connected to the displacement screw (27).

8. The refrigeration compressor rotor casting processing apparatus according to claim 6, characterized in that, It also includes a V-shaped pad (28), which is movably placed on a V-shaped support (16) or an auxiliary fixing bracket (24).

9. The refrigeration compressor rotor casting processing device according to claim 1, characterized in that, The processing table (1) includes a support bracket (29) and an upper table surface (30). The upper table surface (30) is fixedly connected to the support bracket (29). The bottom of the support bracket (29) is threaded with support feet (31) for adjusting the height of the upper table surface (30).

10. The refrigeration compressor rotor casting processing apparatus according to claim 1, characterized in that, It also includes the control panel for the control device.

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