Machining system of motor shell

Abstract

The invention discloses a machining system for a motor shell. The machining system comprises a lathe bed, a rotary workbench, a self-adaptive clamping mechanism, a multi-station machining module, a cooling liquid circulation system and a control system. A linear guide rail is arranged on the lathe bed; the rotary workbench is driven by the servo motor to move along the linear guide rail and used for bearing the motor shell to be machined. The self-adaptive clamping mechanism is mounted on the rotary worktable, comprises a hydraulic driving unit and an adjustable positioning block, and is used for clamping motor shells with different specifications; the multi-station machining module comprises a turning station, a drilling station and a milling station which are sequentially arranged along the lathe bed, and each station is provided with an independent numerical control main shaft. The cooling liquid circulating system is integrated in the lathe bed, and a multi-directional nozzle is arranged to be aligned with a machining area; the control system is in communication connection with the servo motor, the hydraulic driving unit and the numerical control main shaft, and self-adaptive adjustment of machining parameters is achieved.

Description

Technical Field

[0001] The present invention relates to the field of motor processing, and particularly to a processing system for a motor housing. Background Art

[0002] The motor housing needs to be processed with features such as inner circle, end face, mounting holes, etc. The traditional process uses single - machine sequential processing, which has problems such as large repeated clamping errors and low efficiency. Although the CNC machining center in the prior art can integrate multiple processes, it is costly and difficult to meet the flexible production requirements of multi - specification housings. Summary of the Invention

[0003] In view of the above problems, the present invention provides a processing system for a motor housing, which realizes all - in - one clamping and complete processing of the motor housing through the collaborative operation of a rotary table and multiple workstations.

[0004] The technical solution of the present invention is as follows:

[0005] A processing system for a motor housing, comprising:

[0006] A bed body, which is provided with linear guide rails thereon;

[0007] A rotary table, which is driven by a servo motor to move along the linear guide rails;

[0008] An adaptive clamping mechanism, which is installed on the rotary table and includes a hydraulic drive unit, an adjustable positioning block, a pressure sensor and a displacement feedback unit;

[0009] A multi - station processing module, which sequentially includes a turning station, a drilling station and a milling station arranged along the bed body, and each station is equipped with an independent numerical control spindle;

[0010] A coolant circulation system, which is integrated inside the bed body and is configured with multi - directional nozzles aiming at the processing area;

[0011] A control system, which is communicatively connected with the servo motor, the hydraulic drive unit and the numerical control spindle.

[0012] In a further technical solution, the turning station is equipped with a turret, and internal turning tools, end face turning tools and profiling tools are installed on the turret.

[0013] In a further technical solution, the drilling station includes an axially floating drill chuck, and a laser alignment device is provided at the end of the drill chuck.

[0014] In a further technical solution, a chip collection groove is provided on the side of the bed body, and a magnetic separator is configured at the bottom and is communicated with the coolant circulation system.

[0015] In a further technical solution, the control system integrates a human - machine interaction interface, and a processing technology database for motor housings is built - in, supporting one - key call of preset processing programs.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The processing efficiency is increased by more than 40%. Multiple processes are completed in one clamping, reducing the cumulative error;

[0018] 2. The clamping mechanism has strong adaptability, can be compatible with more than 5 specifications of shells, and the changeover time < 10 minutes;

[0019] 3. By closed-loop controlling the processing parameters, the dimensional accuracy of the product reaches IT7 level, and the surface roughness Ra ≤ 1.6 μm. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a processing system for an electric motor housing according to an embodiment of the present invention.

[0021] Description of the Reference Numerals:

[0022] 1. Bed body; 2. Linear guide rail; 3. Rotary table; 4. Servo motor; 5. Adaptive clamping mechanism; 6. Turning station; 7. Drilling station; 8. Milling station; 9. Chip collection trough; 10. Shock absorption and buffering mechanism; 11. Control system; 12. Online detection module. Detailed Embodiment

[0023] The following further describes the embodiments of the present invention with reference to the drawings.

[0024] Embodiment:

[0025] As Figure 1 shown, a processing system for an electric motor housing includes:

[0026] A bed body 1, on which a linear guide rail 2 is provided;

[0027] A rotary table 3, driven by a servo motor 4 to move along the linear guide rail 2, for carrying the electric motor housing to be processed;

[0028] An adaptive clamping mechanism 5, installed on the rotary table 3, including a hydraulic drive unit and adjustable positioning blocks, for clamping electric motor housings of different specifications;

[0029] A multi-station processing module, which successively arranges a turning station 6, a drilling station 7 and a milling station 8 along the bed body 1, and each station is equipped with an independent numerical control spindle; the turning station 6 is equipped with an indexable turret, and internal turning tools, end face turning tools and profiling tools are installed on the turret; the drilling station 7 includes an axially floating drill chuck, and a laser alignment device is provided at the end of the drill chuck;

[0030] A coolant circulation system, integrated inside the bed body 1, and configured with multi-directional nozzles aiming at the processing area;

[0031] The control system 11 is communicatively connected to the servo motor 4, the hydraulic drive unit, and the CNC spindle to achieve adaptive adjustment of machining parameters. The control system 11 integrates a human-machine interface and has a machining process database for the motor housing built-in, supporting one-key calling of preset machining programs.

[0032] The on-line detection module 12 is arranged downstream of the milling station 8 and includes a three-coordinate measuring probe and an infrared thermal imager, which are used to detect the machining dimensions and the stress distribution on the surface of the housing in real time, and feedback the data to the control system 11 for compensation machining.

[0033] The working principle of the above technical solution is as follows:

[0034] The blank is clamped to the rotary table 3. The control system 11 calls the parameters in the process database according to the housing model and adjusts the distance between the positioning blocks of the clamping mechanism to Φ120 mm. The rotary table 3 moves to the turning station 6 to complete the internal turning and finish machining of the end face. The table moves to the drilling station 7, and the laser alignment device corrects the position of the mounting holes. After drilling, the hole diameter is automatically detected. The external heat dissipation fins of the housing are machined at the milling station 8, and the coolant nozzle switches to the atomized cooling mode. After machining, the waste chips enter the magnetic separator through the collection trough, and the coolant is recycled.

[0035] In another embodiment, the adaptive clamping mechanism 5 further includes a pressure sensor and a displacement feedback unit to monitor the clamping force and the workpiece position deviation in real time. The displacement feedback unit includes a laser rangefinder and a contact probe. The data of the two are fused by Kalman filtering to generate a workpiece position compensation signal, and the positioning accuracy reaches ±0.005 mm.

[0036] In another embodiment, as Figure 1 shown, a waste chip collection trough 9 is provided on the side of the bed body 1, and a magnetic separator is configured at the bottom and communicated with the coolant circulation system. An eddy current separator is provided in the waste chip collection trough 9 to separate aluminum chips and iron chips through an alternating magnetic field, with a separation purity of ≥98%, and it is connected to the external recycling system pipeline.

[0037] In another embodiment, as Figure 1 shown, a shock absorption and buffering mechanism 10 is provided at the bottom of the rotary table 3, including a disc spring and a hydraulic damper arranged in parallel. The shock absorption and buffering mechanism 10 is signal-connected to the control system 11 to dynamically adjust the damping coefficient according to the machining vibration frequency.

[0038] In another embodiment, the bed body 1 adopts a double-layer composite structure, with an outer cast iron layer and an inner carbon fiber-reinforced epoxy resin layer. Viscoelastic damping material is filled between the two layers. The overall structure quality is reduced by 30% and the resonance frequency is increased to above 200 Hz.

[0039] The embodiments described above merely represent the specific implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A processing system for a motor housing, characterized in that, include: a bed, on which a linear guide rail is provided; The rotary table is driven by a servo motor and moves along a linear guide rail; The adaptive clamping mechanism is installed on the rotary workbench and includes a hydraulic drive unit, an adjustable positioning block, a pressure sensor and a displacement feedback unit; The multi-station processing module includes turning stations, drilling stations and milling stations arranged along the bed, and each station is equipped with an independent CNC spindle; The coolant circulation system is integrated into the bed and equipped with multi-directional nozzles aimed at the processing area; The control system is connected to the servo motor, hydraulic drive unit and CNC spindle.

2. The processing system of an electric machine housing according to claim 1, characterized in that, The turning station is equipped with an indexable turret, on which an internal turning tool, an end turning tool and a profiling tool are installed.

3. The processing system for a motor housing according to claim 1, wherein, The drilling station comprises an axial floating drill chuck, and a laser alignment device is provided at the end of the drill chuck.

4. The processing system for a motor housing according to claim 1, wherein, A waste chip collecting trough is provided on the side of the bed, and a magnetic separator is arranged at the bottom to communicate with the coolant circulation system.

5. The processing system for a motor housing according to claim 1, wherein, The control system integrates a human-machine interaction interface, has a built-in motor housing processing technology database, and supports one-click calling of preset processing programs.

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