Oil-free air compressor motor assembly tool

Abstract

The utility model discloses an oil -free air compressor motor combined dress frock, it is in the prior art to solve the accuracy and damage problem of combined dress when matching between motor and crankcase, including the L side combined dress frock and R side combined dress frock of same structure, the L side combined dress frock includes first bottom plate, upper table board and support column, and the recessed end face is equipped with in support column top, and the first boss is formed to the recessed end face, and the alignment through groove is opened to the first boss center, when assembling, the motor shaft core both ends are inserted respectively in the alignment through groove of L side combined dress frock and R side combined dress frock and carry out accurate positioning, and the motor bearing is contained on the recessed end face, and the utility model discloses still including bearing guide frock for guiding motor bearing accurate pressure into the bearing assembly hole of crankcase.

Description

Technical Field

[0001] This utility model relates to the field of air compressor equipment, and in particular to a tooling for assembling an oil-free air compressor motor. Background Technology

[0002] An oil-free air compressor, also known as an oil-free reciprocating air compressor, works by starting with electricity. The motor rotates, driving an eccentric wheel, which in turn drives a piston and connecting rod structure. This converts the rotational motion of the eccentric wheel into a reciprocating motion, compressing and expelling gas within a sealed space. The crankcase is a component of the oil-free air compressor, connecting the motor and the side cover. Inside, it houses the eccentric wheel and piston and connecting rod structure. Together with the motor and side cover, it forms an internal sealed space, preventing dust and moisture from entering and affecting the purity of the compressed gas. It also reduces noise generated by the high-speed rotation of the eccentric wheel.

[0003] Currently, most oil-free air compressor manufacturers advocate lightweight, compact, and sophisticated air compressors, minimizing machine size and costs, and reducing unnecessary parts. For example, the motor is now purchased as a finished product instead of a semi-finished product, and then assembled by the manufacturer. Previously, a complete motor with a side cover was purchased; now, only individual motor parts are purchased and assembled by the manufacturer. The crankcase can act as a side cover for the motor, providing a sealing function, thereby reducing costs and shrinking the machine size.

[0004] As can be seen from the above, the installation process of the motor and crankcase is a crucial part of the air compressor assembly. However, the traditional assembly method involves manual assembly, where workers align and press the components together at the required positions. This process is prone to assembly errors. Therefore, this invention proposes an oil-free air compressor motor assembly fixture to solve the aforementioned problems and provide auxiliary alignment for the assembly of the motor and crankcase, making the installation more precise. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling for assembling an oil-free air compressor motor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an assembly fixture for an oil-free air compressor motor, comprising an L-side assembly fixture and an R-side assembly fixture, wherein the L-side assembly fixture and the R-side assembly fixture have the same structural configuration; The L-side assembly fixture includes a first base plate disposed at the bottom end, an upper platform plate mounted on the upper surface of the first base plate, the first base plate and the upper platform plate being concentrically arranged, a support column being disposed at the center of the upper platform plate facing upward, a recessed end face being disposed at the top of the support column, a first boss being disposed in the middle of the recessed end face, and an alignment groove being disposed in the middle of the first boss; after assembly, both ends of the motor shaft are respectively inserted into the alignment grooves of the L-side assembly fixture and the R-side assembly fixture, and the motor shaft is in contact with the end face inside the alignment groove; two motor bearings are respectively mounted above the recessed end faces of the L-side assembly fixture and the R-side assembly fixture; The L-side assembly fixture is detachably inserted into the center of the L-side crankcase, and the R-side assembly fixture is detachably inserted into the center of the R-side crankcase. The surface of the L-side crankcase away from the L-side assembly fixture is provided with a motor bearing assembly hole. After assembly, the bearing guide fixture is detachably installed on the surfaces of the L-side assembly fixture and the R-side assembly fixture to guide the motor bearing into the motor bearing assembly hole.

[0007] Preferably, the bearing guide fixture includes a second base plate, the center of which is provided with a second boss, and the middle of the second boss is provided with a through bearing mounting hole; during assembly, the motor bearing passes through the bearing mounting hole and enters the motor bearing assembly hole of the corresponding L-side crankcase or R-side crankcase.

[0008] Preferably, after assembly, the L-side assembly fixture and the R-side assembly fixture are symmetrically arranged at both ends of the motor shaft.

[0009] Preferably, when the L-side crankcase is assembled with one side of the motor housing, the other side of the motor housing is supported on the motor auxiliary side cover, and the edge of the motor auxiliary side cover is surrounded by a locking step, and the protruding edge of the motor housing is pressed against the inner side of the locking step.

[0010] Preferably, the L-side crankcase is fitted to the end face of the motor housing after assembly.

[0011] Preferably, the inner ring of the motor bearing is radially positioned by the first boss of the L-side assembly fixture and the R-side assembly fixture.

[0012] The technical effects and advantages of this utility model are as follows: 1. During the assembly of the motor shaft core, since the L-side assembly fixture simultaneously holds the motor bearing and the L-side crankcase, the motor bearing will not shift when the motor shaft core is pressed down. Furthermore, when the motor shaft core is pressed down to the bottom, it will touch the L-side assembly fixture, which can play a positioning role during assembly. 2. When the R-side assembly fixture is pressed down, it can simultaneously press down the R-side crankcase and the motor bearing, thereby ensuring that the motor bearing does not shift. 3. During use, by setting bearing guide fixtures, the motor bearing can easily pass through the bearing through hole and enter the motor bearing assembly hole of the corresponding L-side crankcase or R-side crankcase, achieving a good limiting installation effect. 4. When assembling the motor housing with the L-side crankcase during use, inserting a motor auxiliary side cover with a limiting function at the bottom can reduce scratches on the bottom of the motor housing, reduce wear during installation, and effectively protect the motor housing. 5. The combined use of L-side assembly fixture and R-side assembly fixture can achieve the assembly process of pressing motor bearings, motor housing and motor shaft core at the same time, realizing its multi-purpose function.

[0013] In summary, this utility model combines multiple structures to form a tooling for the assembly process of an oil-free air compressor motor, which facilitates the installation of the motor and crankcase, effectively limits the installation of components, and improves the accuracy of the alignment. Attached Figure Description

[0014] Figure 1 This is a split view of the L-side assembly fixture and the R-side assembly fixture in this utility model.

[0015] Figure 2 This is an enlarged schematic diagram of the bearing guide fixture in this utility model.

[0016] Figure 3 This is an enlarged schematic diagram of the motor auxiliary side cover in this utility model.

[0017] Figure 4 This is a schematic diagram of the L-side assembly fixture, L-side crankcase, bearing guide fixture, and motor shaft before assembly.

[0018] Figure 5 for Figure 4 A cross-sectional view after the assembly is pressed down.

[0019] Figure 6 for Figure 4 A diagram showing the state of the components before they are assembled with the motor housing.

[0020] Figure 7 for Figure 6 A cross-sectional view after the assembly is pressed down.

[0021] Figure 8 Install the motor shaft core Figure 7 State diagram before the structure is constructed.

[0022] Figure 9 for Figure 8 A cross-sectional view after the assembly is pressed down.

[0023] Figure 10 For the R-side assembly tooling, the R-side crankcase with the motor bearing installed is assembled into... Figure 9 State diagram before the structure is constructed.

[0024] Figure 11 for Figure 10 A cross-sectional view after the assembly is pressed down.

[0025] Figure 12 Product drawing showing the assembled motor housing, L-side crankcase, and R-side crankcase.

[0026] In the picture: L-side assembly fixture (100), first base plate (101), upper platform plate (102), support column (103), recessed end face (104), first boss (105), and docking through groove (106). Bearing guide fixture (200), second base plate (201), second boss (202), bearing through hole (203). R-side assembly tooling (300); Motor auxiliary side cover (400), locking step (401); L-side crankcase (500); Motor bearing (600); Motor housing (700); Motor shaft core (800); R-side crankcase (900). Detailed Implementation

[0027] 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.

[0028] This utility model provides, for example Figures 1 to 11 An embodiment of an oil-free air compressor motor assembly fixture is shown, particularly for the assembly process of the motor and crankcase. It includes an L-side assembly fixture 100 and an R-side assembly fixture 300, which have the same structural configuration. The L-side assembly fixture 100 includes a first base plate 101 disposed at the bottom end, an upper platform plate 102 mounted on the upper surface of the first base plate 101, the first base plate 101 and the upper platform plate 102 being concentrically arranged, a support column 103 being disposed at the center of the upper platform plate 102 facing upward, a recessed end face 104 being disposed at the top of the support column 103, a first boss 105 being disposed in the middle of the recessed end face 104, and an alignment through groove 106 being disposed in the middle of the first boss 105; after assembly, The two ends of the motor shaft core 800 are respectively inserted into the alignment through grooves 106 of the L-side assembly fixture 100 and the R-side assembly fixture 300, and the motor shaft core 800 is in contact with the end face of the inner side of the alignment through groove 106; two motor bearings 600 are respectively installed above the recessed end faces 104 of the L-side assembly fixture 100 and the R-side assembly fixture 300. After assembly, the L-side assembly fixture 100 and the R-side assembly fixture 300 are symmetrically arranged at both ends of the motor shaft core 800.

[0029] The L-side assembly fixture 100 is detachably inserted into the center of the L-side crankcase 500, and the R-side assembly fixture 300 is detachably inserted into the center of the R-side crankcase 900. The surface of the L-side crankcase 500 away from the L-side assembly fixture 100 is provided with a motor bearing assembly hole. After assembly, the bearing guide fixture 200 is detachably installed on the surfaces of the L-side assembly fixture 100 and the R-side assembly fixture 300 to guide the motor bearing 600 into the motor bearing assembly hole.

[0030] Furthermore, to facilitate better alignment and assembly of the motor bearing 600, this solution includes a bearing guide fixture 200. The bearing guide fixture 200 precisely guides the motor bearing 600 into the motor bearing assembly holes on the L-side crankcase and the R-side crankcase. Specifically, the bearing guide fixture 200 includes a second base plate 201, with a second boss 202 at its center and a through bearing insertion hole 203 at its center. During assembly, the motor bearing 600 passes through the bearing insertion hole 203 and enters the corresponding motor bearing assembly hole in the L-side crankcase 500 or the R-side crankcase 900.

[0031] Furthermore, to avoid wear during assembly of the motor housing 700 and the L-side crankcase 500, when the L-side crankcase 500 is assembled with one side of the motor housing 700, the other side of the motor housing 700 is supported on the motor auxiliary side cover 400. The edge of the motor auxiliary side cover 400 is surrounded by a locking step 401, and the protruding edge of the motor housing 700 is pressed against the inner side of the locking step 401. After assembly, the L-side crankcase 500 is attached to the end face of the motor housing 700.

[0032] Furthermore, the inner ring of the motor bearing 600 is radially positioned by the first boss 105 of the L-side assembly fixture 100 and the R-side assembly fixture 300.

[0033] The working principle of this utility model is detailed in the appendix. Figure 4-11 The assembly process of the motor and crankcase as a whole is as follows: First, press one side of the crankcase (i.e., the L-side crankcase) with the motor housing. During this process, bearing guide fixtures are used to press in the motor bearings. Then, the pressed structure is flipped over as a whole. During this process, the auxiliary motor side cover is needed to support the motor and prevent the edges of the motor housing from being worn, which would prevent the R-side crankcase from being flattened and pressed in. Next, the motor shaft is pressed in, and then the other side of the crankcase (i.e., the R-side crankcase) is pressed in. The assembly operation of the R-side crankcase is the same as that of the L-side crankcase. Finally, it is sealed.

[0034] The oil-free air compressor motor assembly fixture in this solution includes an L-side assembly fixture, an R-side assembly fixture, a motor auxiliary side cover, and a bearing guide fixture. The L-side assembly fixture and the R-side assembly fixture correspond to the alignment and installation of the L-side crankcase and the R-side crankcase, respectively. Specifically: a) Motor bearing assembly: The L-side assembly fixture is inserted into the L-side crankcase for positioning and simultaneously placed on the hydraulic press platform. At this time, the L-side assembly fixture is positioned below. Then, the bearing guide fixture is placed on top of the crankcase for fixation. The motor bearing is placed in the inner ring of the bearing guide fixture, and the machine is started to press down until the inner ring of the motor bearing touches the L-side assembly fixture. Then, the assembled L-side crankcase is removed from the hydraulic press platform. Similarly, fit the R-side assembly tooling into the R-side crankcase and press it into the motor bearing; b. L-side crankcase assembly: Slide the motor auxiliary side cover onto one side of the motor housing (bottom shown in the figure), place the L-side crankcase assembled in step a on the other side, start the hydraulic press, and press the L-side crankcase into the motor housing. c. Motor shaft assembly: Remove the auxiliary side cover of the motor, flip the L-side crankcase, L-side assembly fixture and motor housing simultaneously, then put the motor shaft into the motor housing and press it down until the end of the mating groove of the L-side assembly fixture touches the motor shaft. d. R-side crankcase assembly: Place the assembled R-side crankcase from step a above the motor housing, and start the hydraulic press to press the R-side crankcase into the motor housing for sealing.

[0035] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 tooling for assembling an oil-free air compressor motor, characterized in that: It includes an L-side assembly fixture (100) and an R-side assembly fixture (300), and the L-side assembly fixture (100) and the R-side assembly fixture (300) have the same structure. The L-side assembly fixture (100) includes a first base plate (101) disposed at the bottom end. An upper platform plate (102) is mounted on the upper surface of the first base plate (101). The first base plate (101) and the upper platform plate (102) are concentrically arranged. A support column (103) is provided at the center of the upper platform plate (102). A recessed end face (104) is provided at the top of the support column (103). A first boss (105) is provided in the middle of the recessed end face (104). A boss (105) has a center alignment groove (106); after assembly, the two ends of the motor shaft core (800) are respectively inserted into the alignment grooves (106) of the L-side assembly tool (100) and the R-side assembly tool (300), and the motor shaft core (800) contacts the end face inside the alignment groove (106); two motor bearings (600) are respectively installed above the recessed end faces (104) of the L-side assembly tool (100) and the R-side assembly tool (300); The L-side assembly fixture (100) is detachably inserted into the center of the L-side crankcase (500), and the R-side assembly fixture (300) is detachably inserted into the center of the R-side crankcase (900). The surface of the L-side crankcase (500) away from the L-side assembly fixture (100) is provided with a motor bearing assembly hole. After assembly, the bearing guide fixture (200) is detachably installed on the surfaces of the L-side assembly fixture (100) and the R-side assembly fixture (300) to guide the motor bearing (600) into the motor bearing assembly hole.

2. The assembly fixture for an oil-free air compressor motor according to claim 1, characterized in that: The bearing guide fixture (200) includes a second base plate (201), and a second boss (202) is provided at the center of the second base plate (201) with the center facing upward. A through bearing mounting hole (203) is provided in the middle of the second boss (202). During assembly, the motor bearing (600) passes through the bearing mounting hole (203) and enters the motor bearing assembly hole of the corresponding L-side crankcase (500) or R-side crankcase (900).

3. The assembly fixture for an oil-free air compressor motor according to claim 1, characterized in that: After assembly, the L-side assembly fixture (100) and the R-side assembly fixture (300) are symmetrically arranged at both ends of the motor shaft (800).

4. The assembly fixture for an oil-free air compressor motor according to claim 1, characterized in that: When the L-side crankcase (500) is assembled with one side of the motor housing (700), the other side of the motor housing (700) is supported on the motor auxiliary side cover (400). The edge of the motor auxiliary side cover (400) is surrounded by a locking step (401), and the protruding edge of the motor housing (700) is pressed against the inner side of the locking step (401).

5. The assembly fixture for an oil-free air compressor motor according to claim 4, characterized in that: The L-side crankcase (500) is fitted to the end face of the motor housing (700) after assembly.

6. The assembly fixture for an oil-free air compressor motor according to claim 1, characterized in that: The inner ring of the motor bearing (600) is radially positioned by the first boss (105) of the L-side assembly tool (100) and the R-side assembly tool (300).

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