Pressing tool for assembling crankshaft rotor

Abstract

The utility model discloses a kind of press-in tool for crankshaft rotor assembly, it is related to the technical field of assembly equipment, including workbench, workbench is provided with feeding station and assembly station, its upper portion is provided with press-in mechanism by support, feeding station is provided with rotor positioning seat, transfer equipment includes horizontal transfer mechanism and vertical transfer mechanism, rotor press-in tool is installed on the transfer seat of vertical transfer mechanism, and it includes positioning head, the utility model structure is simple, reasonable in design, can effectively solve the situation such as the poor installation precision caused by conventional assembly process, bearing damage, can effectively ensure the precision of press-in assembly, ensure that product runs smoothly, with practicality, and equipment cost is low, suitable for wide promotion.

Description

Technical Field

[0001] This utility model relates to the field of assembly equipment technology, and in particular to a press-fit tool for assembling a crankshaft rotor. Background Technology

[0002] A compressor is a fluid machine that raises low-pressure gas to high-pressure gas, and it is widely used in refrigeration, air conditioning, chemical and other fields. It compresses gas by mechanical work, increasing gas pressure and density, and realizes energy conversion and transmission. Its power system is generally an electric motor or an internal combustion engine.

[0003] During its production process, especially in the assembly of crankshaft, rotor and compressor housing (also known as support plate), bearing damage and malfunction are prone to occur. The main reason is that in the conventional assembly process, the rotor is first installed into the compressor housing, and then the rotor part is pressed into the compressor housing by tooling. During this process, due to the magnetic interaction between the rotor and the stator inside the compressor housing, the compressor housing will tilt slightly, which will cause the crankshaft and bearing to shift, causing the bearing to be damaged, and thus the product will not run smoothly. Summary of the Invention

[0004] In view of the problems disclosed in the background art, the present invention provides a press-fit tool for crankshaft rotor assembly.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A press-fit fixture for crankshaft rotor assembly includes a worktable, characterized in that the worktable is provided with a feeding station and an assembly station, and a press-fit mechanism is installed above it via a bracket.

[0007] The feeding station is provided with a rotor positioning seat, the assembly station is provided with a housing positioning seat, and the pressing mechanism includes a transfer device and a rotor pressing fixture installed on the transfer device.

[0008] The transfer equipment includes a horizontal transfer mechanism and a vertical transfer mechanism. The horizontal transfer mechanism is fixedly installed above the workbench by a bracket, and the vertical transfer mechanism is vertically installed on the transfer seat of the horizontal transfer mechanism.

[0009] The rotor pressing fixture is installed on the transfer seat of the vertical transfer mechanism. It includes a positioning head, which is hollow inside and has a positioning hole at its lower end that matches the upper end of the rotor. The positioning head is equipped with a chuck.

[0010] The aforementioned press-fit fixture for crankshaft rotor assembly includes a stepped positioning through hole in the middle of the rotor positioning seat that matches the lower end of the rotor.

[0011] In the aforementioned press-fit fixture for crankshaft rotor assembly, the upper end face of the housing positioning seat is a support surface, and a positioning boss is provided on the support surface, the positioning boss engaging with the lower end of the compressor housing;

[0012] The aforementioned press-fit fixture for crankshaft rotor assembly includes a plurality of housing clamping mechanisms arranged circumferentially around the housing positioning seat. Each housing clamping mechanism consists of a cylinder and a clamping plate. The cylinder is fixedly mounted on the worktable by a bracket, with its telescopic shaft facing the housing positioning seat. The clamping plate is fixedly mounted on the telescopic shaft of the cylinder and its extension and retraction are controlled by the cylinder to perform clamping action on the compressor housing.

[0013] In the aforementioned crankshaft rotor assembly press-fit fixture, the side of the clamping plate away from the cylinder is arc-shaped and fits the outer surface of the compressor housing.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This utility model discloses a press-fit fixture for crankshaft rotor assembly, relating to the field of assembly equipment technology. It includes a worktable with a loading station and an assembly station. A press-fit mechanism is mounted above the worktable via a bracket. A rotor positioning seat is provided on the loading station. The transfer equipment includes a horizontal transfer mechanism and a vertical transfer mechanism. The rotor press-fit fixture is mounted on the transfer seat of the vertical transfer mechanism and includes a positioning head. This utility model has a simple structure and reasonable design, effectively solving problems such as poor installation accuracy and bearing damage caused by conventional assembly processes. It effectively ensures the accuracy of press-fit assembly, ensures smooth product operation, is practical, and has low equipment cost, making it suitable for widespread promotion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 This is a cross-sectional view of the rotor positioning seat.

[0018] Figure 3 Cross-sectional view of the housing positioning seat and rotor press-in tooling.

[0019] Figure 4 This is a schematic diagram of the crankshaft rotor.

[0020] The reference numerals in the attached drawings are as follows: 1. Crankshaft rotor; 2. Compressor housing; 3. Worktable; 4. Loading station; 5. Assembly station; 6. Press-in mechanism; 7. Rotor positioning seat; 8. Housing positioning seat; 9. Rotor pressing fixture; 10. Horizontal transfer mechanism; 11. Vertical transfer mechanism; 12. Positioning head; 13. Positioning hole; 14. Claw; 15. Positioning through hole; 16. Positioning boss; 17. Housing clamping mechanism; 18. Cylinder; 19. Clamping plate; 20. Bearing; 21. Crankshaft; 22. Rotor. Detailed Implementation

[0021] 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.

[0022] Example 1

[0023] As shown in the figure, this embodiment discloses a press-fit fixture for crankshaft rotor assembly, which is used for press-fit assembly of crankshaft rotor 1 (also called rotor assembly) and compressor housing 2 (also called support plate). The crankshaft rotor 1 (also called rotor assembly) is obtained by pre-assembly of crankshaft 21 and rotor 22. The press-fit fixture includes a worktable 3, on which a loading station 4 and an assembly station 5 are provided, and a press-fit mechanism 6 is installed above it via a bracket.

[0024] Among them, the loading station 4 is equipped with a rotor positioning seat 7, which is used to position and place the assembled crankshaft rotor 1. The assembly station 5 is equipped with a housing positioning seat 8, which is used to position and place the compressor housing 2. The pressing mechanism 6 is used for the transfer and pressing assembly of the crankshaft rotor 1, and includes a transfer device and a rotor pressing fixture 9 installed on the transfer device.

[0025] Specifically, the transfer equipment includes a horizontal transfer mechanism 10 and a vertical transfer mechanism 11. The horizontal transfer mechanism 10 is fixedly installed above the workbench 3 by a bracket, while the vertical transfer mechanism 11 is vertically installed on the transfer seat of the horizontal transfer mechanism 10 and completes horizontal displacement through the horizontal transfer mechanism 10 to realize the horizontal switching between the loading station 4 and the assembly station 5.

[0026] In addition, the rotor pressing fixture 9 is installed on the transfer seat of the vertical transfer mechanism 11 and moves horizontally synchronously with the vertical transfer mechanism 11. It includes a positioning head 12, which is hollow inside and has a positioning hole 13 at the lower end that matches the upper end of the rotor. The positioning hole 13 can accommodate the upper end of the crankshaft rotor 1 to enter the interior of the positioning head 12. The positioning head 12 is provided with a chuck 14, which can clamp the upper end of the crankshaft rotor 1 to achieve the purpose of fixing and clamping the crankshaft rotor 1.

[0027] In this embodiment, when the crankshaft rotor assembly press-in fixture is working, the assembled crankshaft rotor 1 and compressor housing 2 are positioned on the rotor positioning seat 7 of the loading station 4 and the assembly station 5 by a robotic arm or manually. Then, the transfer equipment starts working, controlling the rotor press-in fixture 9 to move above the loading station 4. At this time, the positioning head 12 moves down to the designated position through the vertical transfer mechanism 11, so that the upper end of the crankshaft rotor 1 enters the interior of the positioning head 12, and the positioning and clamping of the crankshaft rotor 1 is completed by the chuck 14. Then, the crankshaft rotor 1 is transferred to the assembly station 5 again by the transfer equipment. Then, as the rotor press-in fixture 9 continues to descend, the crankshaft rotor 1 is accurately pressed into the compressor housing 2, completing the assembly.

[0028] Through the above solution, the coaxiality of the crankshaft rotor 1 and the compressor housing 2 is improved during the pressing process, the crankshaft 21 is accurately positioned, and can be perfectly pressed into and assembled with the bearing 20, minimizing damage to the bearing 20 and ensuring smooth product operation.

[0029] Example 2

[0030] This embodiment discloses a press-fit fixture for crankshaft rotor assembly. To adapt to the middle and lower section structure of crankshaft rotor 1, a stepped positioning through hole 15 is provided in the middle of the rotor positioning seat 7, which can perfectly position the crankshaft rotor 1, thereby ensuring the clamping accuracy of the positioning head 12.

[0031] Furthermore, the upper surface of the housing positioning seat 8 serves as a support surface, on which a positioning boss 16 is provided. This positioning boss 16 fits into the lower end of the compressor housing 2 and perfectly abuts against the bearing 20 at the lower part of the compressor housing 2, ensuring accurate positioning of the compressor housing 2. At the same time, to better ensure the positioning accuracy of the compressor housing 2, multiple housing clamping mechanisms 17 are arranged circumferentially around the periphery of the housing positioning seat 8. Each housing clamping mechanism 17 consists of a cylinder 18 and a clamping plate 19. The cylinder 18 is fixedly mounted on the worktable 3 by a bracket, with its telescopic shaft facing the housing positioning seat 8. The clamping plate 19 is fixedly mounted on the telescopic shaft of the cylinder 18 and its extension and retraction are controlled by the cylinder 18 to perform clamping action on the compressor housing 2. After the compressor housing 2 is positioned and placed, it is then clamped by the housing clamping mechanism 17, which can effectively improve the accuracy of pressing and assembly, reduce or eliminate product defects caused by assembly, and improve the yield rate.

[0032] In addition, the side of the clamping plate 19 away from the cylinder 18 is arc-shaped and fits the outer surface of the compressor housing 2. At the same time, the housing positioning seat 8 and the positioning boss 16 are provided with through holes to avoid affecting the passage of the lower end of the crankshaft rotor 1 when the crankshaft rotor 1 is pressed into the compressor housing 2.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A press-fit fixture for crankshaft rotor assembly, comprising a worktable (3), characterized in that, The workbench (3) is provided with a feeding station (4) and an assembly station (5), and a pressing mechanism (6) is installed above it via a bracket; The loading station (4) is provided with a rotor positioning seat (7), the assembly station (5) is provided with a housing positioning seat (8), and the pressing mechanism (6) includes a transfer device and a rotor pressing fixture (9) installed on the transfer device; The transfer device includes a horizontal transfer mechanism (10) and a vertical transfer mechanism (11). The horizontal transfer mechanism (10) is fixedly installed above the workbench (3) by a bracket, and the vertical transfer mechanism (11) is vertically installed on the transfer seat of the horizontal transfer mechanism (10). The rotor pressing fixture (9) is installed on the transfer seat of the vertical transfer mechanism (11). It includes a positioning head (12), which is hollow inside and has a positioning hole (13) at the lower end that matches the upper end of the rotor. A pawl (14) is provided inside the positioning head (12).

2. The press-fit tool for crankshaft rotor assembly according to claim 1, characterized in that, The rotor positioning seat (7) is provided with a stepped positioning through hole (15) in the middle that matches the lower end of the rotor.

3. The press-fit tool for crankshaft rotor assembly according to claim 1, characterized in that, The upper surface of the housing positioning seat (8) is a support surface, and a positioning boss (16) is provided on the support surface. The positioning boss (16) fits into the lower end of the compressor housing (2).

4. A press-fit tool for crankshaft rotor assembly according to any one of claims 1, 2, and 3, characterized in that, The periphery of the housing positioning seat (8) is provided with a plurality of housing clamping mechanisms (17). The housing clamping mechanism (17) consists of a cylinder (18) and a clamping plate (19). The cylinder (18) is fixedly installed on the workbench (3) by a bracket, and its telescopic shaft faces the housing positioning seat (8). The clamping plate (19) is fixedly installed on the telescopic shaft of the cylinder (18) and is controlled by the cylinder (18) to perform clamping action on the compressor housing (2).

5. The press-fit tool for crankshaft rotor assembly according to claim 4, characterized in that, The side of the clamping plate (19) away from the cylinder (18) is arc-shaped and fits the outer surface of the compressor housing (2).

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