Machining platform for motor shell

Abstract

The invention discloses a machining platform for a motor shell. The machining platform 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 platform 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 platform for a motor housing, which realizes all processing of the motor housing in one clamping through the cooperation of a rotary table and multiple workstations.

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

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

[0006] A bed body, on which a linear guide rail is provided;

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

[0008] An adaptive clamping mechanism, which is installed on the rotary table and includes a hydraulic drive unit and an adjustable positioning block; [[ID=3,0]]

[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 equipped 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 communicated with the coolant circulation system.

[0015] In a further technical solution, a shock absorption and buffering mechanism is provided at the bottom of the rotary table, which includes a disc spring and a hydraulic damper arranged in parallel, and the shock absorption and buffering mechanism is signal-connected to the control system.

[0016] In a further technical solution, it further includes an on-line detection module, which is arranged downstream of the milling station and includes a three-coordinate measuring probe and an infrared thermal imager.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The processing efficiency is increased by more than 40%. Multiple processes are completed in one clamping, reducing the cumulative error.

[0019] 2. The clamping mechanism has strong adaptability, can be compatible with more than 5 specifications of shells, and the tool change time < 10 minutes.

[0020] 3. By closed-loop controlling the processing parameters, the dimensional accuracy of the product reaches IT7 level, and the surface roughness Ra ≤ 1.6μm. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a processing platform for a motor housing according to an embodiment of the present invention.

[0022] Description of the Reference Numerals in the Drawings

[0023] 1. Bed body; 2. Linear guide rail; 3. Rotary worktable; 4. Servo motor; 5. Adaptive clamping mechanism; 6. Turning station; 7. Drilling station; 8. Milling station; 9. Scrap collection tank; 10. Shock absorption and buffering mechanism; 11. Control system; 12. On-line detection module. Detailed Embodiments

[0024] The following further describes the embodiments of the present invention with reference to the drawings.

[0025] Embodiment:

[0026] As Figure 1 shown, a processing platform for a motor housing includes:

[0027] A bed body 1, on which a linear guide rail 2 is provided;

[0028] A rotary worktable 3, which is driven by a servo motor 4 to move along the linear guide rail 2 and is used to carry the motor housing to be processed;

[0029] An adaptive clamping mechanism 5, which is installed on the rotary worktable 3 and includes a hydraulic drive unit and an adjustable positioning block, and is used to clamp motor housings of different specifications;

[0030] A multi-station processing module, including a turning station 6, a drilling station 7 and a milling station 8 arranged in sequence along the bed body 1, and each station is equipped with an independent numerical control spindle; the turning station 6 is equipped with a 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;

[0031] A coolant circulation system, integrated inside the bed 1, is configured with multi-directional nozzles aiming at the machining area;

[0032] A control system 11, communicatively connected to the servo motor 4, the hydraulic drive unit and the CNC spindle, realizes adaptive adjustment of machining parameters; the control system 11 integrates a human-machine interface and has a machining process database for motor housings built-in, supporting one-key calling of preset machining programs;

[0033] An on-line detection module 12, arranged downstream of the milling station 8, includes a three-coordinate measuring probe and an infrared thermal imager, used for real-time detection of machining dimensions and the stress distribution on the surface of the housing, and feeding the data back to the control system 11 for compensating machining.

[0034] The working principle of the above technical solution is as follows:

[0035] The blank is clamped onto the rotary table 3, and 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 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, and the hole diameter is automatically detected after drilling; the external heat dissipation fins of the housing are machined at the milling station 8, and the coolant nozzles are switched to the atomized cooling mode; after machining, the waste chips enter the magnetic separator through the collection tank, and the coolant is recycled.

[0036] In another embodiment, the adaptive clamping mechanism 5 further includes a pressure sensor and a displacement feedback unit, which real-time monitor the clamping force and the workpiece position deviation; the displacement feedback unit includes a laser rangefinder and a contact probe, and the data of both are fused by Kalman filtering to generate a workpiece position compensation signal, and the positioning accuracy reaches ±0.005 mm.

[0037] In another embodiment, as Figure 1 shown, a waste chip collection tank 9 is provided on the side of the bed 1, and a magnetic separator is configured at the bottom and is connected to the coolant circulation system; an eddy current separator is arranged in the waste chip collection tank 9 to separate aluminum chips and iron chips through an alternating magnetic field, and the separation purity is ≥98%, and it is connected to the external recycling system pipeline.

[0038] 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, and 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.

[0039] In another embodiment, the bed body 1 adopts a double-layer composite structure, with the outer layer being a cast iron layer, the inner layer being a carbon fiber reinforced epoxy resin layer, and a viscoelastic damping material filled between the two layers. The overall structural mass is reduced by 30% and the resonance frequency is increased to above 200 Hz.

[0040] The above embodiments only 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 of 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 belong to the protection scope of the present invention.

Claims

1. A processing platform for a motor housing, characterized in that, Comprising: A bed body, on which a linear guide rail is provided; A rotary worktable, driven by a servo motor to move along the linear guide rail; An adaptive clamping mechanism, mounted on the rotary worktable, including a hydraulic drive unit and an adjustable positioning block; A multi-station machining module, sequentially including 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; A coolant circulation system, integrated inside the bed body, configured with multi-directional nozzles aimed at the machining area; A control system, communicatively connected to the servo motor, the hydraulic drive unit, and the numerical control spindle.

2. The processing platform of a motor housing according to claim 1, characterized in that, The turning station is equipped with an indexable turret, and internal turning tools, face turning tools, and profiling tools are mounted on the turret.

3. The processing platform for a motor housing according to claim 1, characterized in that, The drilling station includes an axially floating drill chuck, and a laser alignment device is provided at the end of the drill chuck.

4. The processing platform for a motor housing according to claim 1, characterized in that, A chip collection groove is provided on the side of the bed body, and a magnetic separator is configured at the bottom and communicated with the coolant circulation system.

5. The processing system according to claim 1, characterized in that, A shock absorption and buffering mechanism is provided at the bottom of the rotary worktable, including a disc spring and a hydraulic damper arranged in parallel, and the shock absorption and buffering mechanism is signal-connected to the control system.

6. The processing system according to claim 1, characterized in that, An on-line detection module is further included, arranged downstream of the milling station, including a coordinate measuring probe and an infrared thermal imager.

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