A positioning press-fitting mechanism for an electric machine

Abstract

The utility model relates to a kind of positioning press-fitting mechanism for motor, belongs to the technical field of motor automatic production equipment, including rack table and carousel, the rack table upper end is equipped with positioning tool holder, the positioning tool holder is distributed with motor end cover shaft and motor body on placement, the carousel side is equipped with positioning press-fitting assembly.The positioning press-fitting assembly includes positioning press-fitting frame, the positioning press-fitting frame is equipped with the press-fitting cylinder I for the motor end cover shaft press-fitting forming, the press-fitting cylinder I side is equipped with the press-fitting cylinder II for the motor end cover shaft press-fitting to motor body, the positioning press-fitting frame is equipped with the cylinder clamp plate for the motor end cover shaft press-fitting forming displacement to the motor body upper end positioning assembly.Adopted carousel type multi-station cooperation multi-axis linkage mechanical hand structure, for motor production process motor end cover shaft press-fitting to motor body on. Realized the integration assembly of feeding, forming, transfer, assembly.

Description

Technical Field

[0001] This utility model relates to the field of automated production equipment for motors, and specifically to a positioning and pressing mechanism for motors. Background Technology

[0002] In the motor manufacturing industry, motor assembly is a crucial process that combines components such as the stator, rotor, end cover shaft, and motor body into the final product. Among these, the press-fitting between the motor end cover shaft and the motor body is particularly important, as its quality directly affects the motor's operating performance, noise level, and lifespan. Current technologies typically present the following problems with the assembly of motor end cover shafts: (1) Low degree of automation and reliance on manual operation: Traditional motor assembly methods mostly use manual positioning or simple semi-automatic equipment. Operators usually need to manually place the motor end cover shaft onto the machine body, and then use a punch press or simple press to press it in place. This labor-intensive operation mode is not only labor-intensive and inefficient, but also difficult to meet the needs of modern large-scale production.

[0003] (2) Poor positioning accuracy and unstable product quality: The motor end cover shaft usually needs to be shaped or pre-pressed during the press-fitting process before being finally assembled with the machine body. Existing equipment often lacks a precise displacement adjustment mechanism when transferring workpieces, which makes the end cover shaft prone to displacement during movement. If the positioning is inaccurate, forced press-fitting will cause the shaft to tilt, the bearing housing to deform, or the fit to be too tight / too loose, which will seriously reduce the product qualification rate.

[0004] (3) Dispersed processes and low efficiency: In traditional processes, the forming, transfer and final pressing of end cap shafts are often completed on different independent equipment or workstations. The transfer of workpieces between different equipment not only increases the time for material handling, but also increases the risk of scratches or damage caused by secondary human handling, and makes it difficult to achieve continuity and rhythm of the production process.

[0005] (4) Insufficient flexibility and poor adaptability: The existing pressing equipment usually has a relatively fixed structure and lacks multi-axis adjustment functions (such as left and right, front and back, and lifting freedom), making it difficult to adapt to the rapid switching of different models or specifications of motors, resulting in low equipment versatility and utilization. Summary of the Invention

[0006] This utility model mainly addresses the shortcomings of existing technologies by providing a positioning and pressing mechanism for motors. It employs a rotary multi-station, multi-axis linkage robotic arm structure to press the motor end cap shaft onto the motor body during motor production. This achieves integrated assembly of feeding, forming, transferring, and assembly.

[0007] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions: A positioning and pressing mechanism for an electric motor includes a frame and a turntable. A positioning fixture is provided at the upper end of the frame, and a motor end cover shaft and a motor body are distributed on the positioning fixture. A positioning and pressing assembly is provided on the side of the turntable. The positioning and pressing assembly includes a positioning and pressing frame, on which a pressing cylinder I for pressing the motor end cover shaft is provided. A pressing cylinder II for pressing the motor end cover shaft onto the motor body is provided on the side of the pressing cylinder I. A cylinder clamping plate is provided inside the positioning and pressing frame to displace the pressed motor end cover shaft to the upper end of the motor body for positioning and assembly.

[0008] Press-fit cylinder I: Responsible for the initial press-fit forming process of the motor end cover shaft.

[0009] Press-fit cylinder II: Responsible for pressing the processed end cap shaft onto the motor body.

[0010] Preferably, a lifting displacement lead screw seat is provided between the cylinder clamping plate and the machine frame; a front-to-back displacement lead screw seat is provided between the lifting displacement lead screw seat and the cylinder clamping plate; and a left-to-right displacement lead screw seat is provided between the lifting displacement lead screw seat and the machine frame. The left-to-right displacement lead screw seat adopts a structure in which the lead screw is driven by a motor. The front-to-back displacement lead screw seat and the lifting displacement lead screw seat are composed of a structure in which the lead screw is driven by a motor through a pulley.

[0011] Cylinder clamp: Directly clamps or fixes the motor end cover shaft.

[0012] X-axis (left and right) displacement: achieved through left and right displacement lead screw seats, using a structure in which the motor directly drives the lead screw, providing precise movement in the left and right directions.

[0013] Y-axis (forward and backward) displacement: achieved through a forward and backward displacement lead screw seat, using a structure where a motor and pulley drive the lead screw.

[0014] Z-axis (lifting) displacement: achieved through a lifting displacement lead screw seat, which also uses a motor and pulley to drive the lead screw, providing vertical lifting power.

[0015] Preferably, a turntable is provided between the positioning fixture and the machine frame, and the positioning fixture is arranged in several groups in a ring on the turntable.

[0016] Preferably, an angle motor is provided between the turntable and the machine frame to drive the turntable to rotate at an angle. The angle motor drives the turntable to rotate, realizing the flow between different workstations.

[0017] Preferably, both the lower ends of pressing cylinder I and pressing cylinder II are equipped with pressure plates. To ensure pressing quality, pressure plates are installed at the lower ends of both cylinders.

[0018] This invention can achieve the following effects: This invention provides a positioning and pressing mechanism for motors. Compared with existing technologies, it adopts a rotary multi-station multi-axis linkage robot structure to press the motor end cover shaft onto the motor body during motor production. This automated positioning and pressing mechanism integrates automatic positioning, precision displacement, forming, and assembly functions, thereby improving the accuracy, efficiency, and automation level of motor assembly.

[0019] High-precision positioning: The three-axis movement is achieved by using a lead screw drive (partially with a pulley), which ensures the positional accuracy of gripping and assembly.

[0020] Automation integration: The molding station and the assembly station are integrated into the same component, which, together with the turntable, improves production efficiency.

[0021] Flexible design: The design of the three-axis robot allows for adjustment of the assembly position within a certain range to adapt to products of different specifications. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a front view structural diagram of this utility model.

[0024] Figure 3 This is a structural schematic diagram of the positioning and pressing assembly in this utility model.

[0025] In the diagram: 1. Positioning and pressing assembly; 2. Turntable; 3. Motor end cover shaft; 4. Motor body; 5. Positioning fixture seat; 6. Machine frame; 7. Press plate; 8. Positioning and pressing frame; 9. Front and rear displacement lead screw seat; 10. Cylinder clamping plate; 11. Lifting displacement lead screw seat; 12. Left and right displacement lead screw seat; 13. Angle motor; 14. Pressing cylinder I; 15. Pressing cylinder II. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] Example: Figure 1 , Figure 2 and Figure 3As shown, a positioning and pressing mechanism for a motor includes a frame 6 and a turntable 2. A positioning fixture 5 is provided on the upper end of the frame 6, and the turntable 2 is positioned between the positioning fixture 5 and the frame 6. The positioning fixture 5 is arranged in four groups in a ring on the turntable 2. An angle motor 13 is provided between the turntable 2 and the frame 6 to drive the turntable 2 to rotate at an angle. A motor end cap shaft 3 and a motor body 4 are distributed on the positioning fixture 5. A positioning and pressing assembly 1 is provided on the side of the turntable 2. The positioning and pressing assembly 1 includes a positioning and pressing frame 8, on which a pressing cylinder I 14 for pressing the motor end cap shaft 3 is provided. A pressing cylinder II 15 for pressing the motor end cap shaft 3 onto the motor body 4 is provided on the side of the pressing cylinder I 14. A pressure plate 7 is provided at the lower end of both the pressing cylinder I 14 and the pressing cylinder II 15. The positioning and pressing frame 8 contains a cylinder clamping plate 10 that moves the press-formed motor end cover shaft 3 to the upper end of the motor body 4 for positioning and assembly. A lifting displacement screw seat 11 is located between the cylinder clamping plate 10 and the machine frame 6. A front-to-back displacement screw seat 9 is located between the lifting displacement screw seat 11 and the cylinder clamping plate 10. A left-to-right displacement screw seat 12 is located between the lifting displacement screw seat 11 and the machine frame 6. The left-to-right displacement screw seat 12 uses a motor-driven screw operation structure. The front-to-back displacement screw seat 9 and the lifting displacement screw seat 11 are composed of a structure where the motor drives the screw operation via a pulley.

[0028] Workflow: Loading / positioning: The motor end cover shaft 3 and the motor body 4 are placed on the positioning fixture 5 of the turntable 2.

[0029] Turntable positioning: Angle motor 13 drives turntable 2 to rotate, rotating the workpiece to the working area of ​​positioning and pressing assembly 1.

[0030] Pre-pressing of end cover shaft: Pressing cylinder I14 presses down, and the motor end cover shaft is formed by pressing plate 7.

[0031] Grabbing and Transfer: Driven by the left and right, front and back, and lifting screw seat, the cylinder clamping plate 10 is precisely moved to the position of the formed motor end cover shaft 3 and clamps the motor end cover shaft 3.

[0032] The cylinder clamp 10 moves the motor end cover shaft 3 from its original position through the coordinated action of the three axes and precisely positions it above the motor body 4.

[0033] Final assembly: After the cylinder clamping plate 10 is unloaded, it retracts to its original position. At this time, the pressing cylinder II 15 presses down, pressing the motor end cover shaft 3 into the motor body 4, completing the assembly. Finally, it is rotated by the turntable 2 to the unloading station.

[0034] In summary, this positioning and pressing mechanism for motors employs a rotary multi-station, multi-axis linkage robotic arm structure to press the motor end cover shaft onto the motor body during motor production. It achieves integrated assembly of feeding, forming, transfer, and assembly.

[0035] Multi-station high-efficiency operation: By using 4 sets of circularly distributed tooling seats in conjunction with a turntable, a circular production line operation of feeding, pressing, and assembly is realized, which improves production efficiency.

[0036] Fully automated precision assembly: Through the cylinder clamp plate and the three-axis lead screw seat (left and right, front and back, lifting), automatic and precise displacement and positioning from the press-fitting station to the assembly station are realized without manual intervention, ensuring assembly accuracy.

[0037] Various drive types: For load requirements in different axes, left and right displacement is driven by direct drive, while forward and backward and lifting displacement are driven by a pulley-driven screw structure, which takes into account both accuracy and smooth transmission.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A positioning and pressing mechanism for an electric motor, characterized in that: The machine includes a frame (6) and a turntable (2). The upper end of the frame (6) is provided with a positioning fixture (5). The positioning fixture (5) is provided with a motor end cover shaft (3) and a motor body (4). The turntable (2) is provided with a positioning press assembly (1) on its side. The positioning press assembly (1) includes a positioning press frame (8). The positioning press frame (8) is provided with a press cylinder I (14) for pressing the motor end cover shaft (3) into shape. The side of the press cylinder I (14) is provided with a press cylinder II (15) for pressing the motor end cover shaft (3) onto the motor body (4). The positioning press frame (8) is provided with a cylinder clamp (10) for displacing the pressed motor end cover shaft (3) to the upper end of the motor body (4) for positioning and assembly.

2. The positioning and pressing mechanism for a motor according to claim 1, characterized in that: A lifting displacement screw seat (11) is provided between the cylinder clamp (10) and the machine frame (6), a front-to-back displacement screw seat (9) is provided between the lifting displacement screw seat (11) and the cylinder clamp (10), and a left-to-right displacement screw seat (12) is provided between the lifting displacement screw seat (11) and the machine frame (6).

3. The positioning and pressing mechanism for a motor according to claim 1, characterized in that: A turntable (2) is provided between the positioning fixture (5) and the machine frame (6), and the positioning fixture (5) is arranged in several groups in a ring on the turntable (2).

4. A positioning and pressing mechanism for a motor according to claim 3, characterized in that: An angle motor (13) is provided between the turntable (2) and the frame (6) to drive the turntable (2) to rotate at an angle.

5. A positioning and pressing mechanism for a motor according to claim 1, characterized in that: The lower end of the press cylinder I (14) and the lower end of the press cylinder II (15) are both provided with a pressure plate (7).

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