What does the translation and forward and reverse of the magnetic polishing machine mean?
The translation and forward and reverse of the magnetic polishing machine are two key technologies in its core working mode, which directly affect the polishing efficiency and the surface treatment quality of the workpiece. The following is an analysis from the perspective of technical principles, functional realization and industrial application:
1. Technical analysis of translation function
Principle of translation mechanism
The translation function of the magnetic polishing machine is realized by the horizontal reciprocating motion of the electromagnetic field generator, and the movement amplitude is usually controlled within the adjustable range of 50-200mm. The control system is driven by a servo motor, with a positioning accuracy of up to ±0.1mm, and the translation speed can be adjusted in the range of 0.5-5m/min.
Motion trajectory design
The translation path adopts a composite motion algorithm of sine wave superimposed sawtooth wave to ensure that the abrasive forms an asymmetric eddy current in three-dimensional space. Straight lines, arcs and custom trajectories can be realized through PLC programming to meet the polishing needs of different cavity structures.
Technical advantages
Eliminate processing blind spots: achieve coverage of complex structures such as deep holes and threads
Improve abrasive utilization: dynamic magnetic field increases abrasive distribution density by 30%
Extend equipment life: reduce local overheating and extend bearing life by 40%
II. Dynamic analysis of forward and reverse control
Drive system configuration
Adopt double-winding permanent magnet synchronous motor with a torque density of 8.5Nm/kg, which supports direction switching within 0.1 seconds. The inverter sets multi-speed control, and the forward and reverse switching frequency can reach 1200 times/minute.
Polishing dynamics model
Forward stage (0-180°): abrasive forms cutting front under centrifugal force, and the removal rate is increased by 25%
Reverse stage (180-360°): reverse shear force is generated, and the surface roughness is improved by Ra0.02μm
Intelligent control strategy
Integrated torque feedback system, automatically adjusts the steering timing when a sudden load change is detected. With the vibration sensor, the resonance point avoidance control is realized, and the noise is reduced by 15dB.
3. Synergistic effect and industrial application
Parameter coupling optimization
Through DOE experimental design, a response surface model of translation speed and reversal frequency is established to achieve surface roughness Ra<0.1μm in medical device polishing, while maintaining a dimensional accuracy of ±2μm.
Industry application cases
Watch industry: 0.5mm translation step with 200rpm forward and reverse rotation to achieve mirror processing of sapphire watch case
Automobile manufacturing: 3-axis linkage translation + directional polishing to increase turbine blade fatigue life by 40%
Electronic components: Micron-level translation control solves the problem of SMD package pin polishing
Economic analysis
Compared with traditional vibration polishing, the comprehensive energy consumption is reduced by 35%, the consumables consumption is reduced by 50%, and the daily production capacity of a single machine is increased to 3,000 pieces/8h.
4. Technology development trend
The latest generation of equipment integrates a digital twin system to optimize motion parameters through real-time simulation. Using superconducting electromagnetic technology, the magnetic field strength is increased to 2T, and with AI visual inspection, closed-loop process control is achieved.
Conclusion: The translation and forward and reverse technology of magnetic polishing machines has developed into a common key technology for precision manufacturing. Its parametric control capability directly determines the level of realization of micro-nano surface engineering. With the in-depth application of intelligent algorithms, this technology is expanding into the field of adaptive polishing, pushing surface treatment into a new stage of digitalization.
