Research Of Deburring Mathod Based On 3D Printing Technology

In traditional manufacturing industry, complex mechine parts are deburred manually, which usually requires too many labors and takes too much time, and the quality of mechine parts is unstable. Robot deburring, which improves the production efficiency and reduces cost,meets the needs of deburring quality. However,robot deburring is only for single model parts, and the trajectory generation is very complex, and trajectory code need to be generated again when parts are replaced.Therefore, the research on a new deburring method is of great significance.Combined with investigating of the current development situation of deburring technology at home and abroad, the related basic theories of 3D printing technology are applied to deburring of mechine parts, this paper puts forward a kind of deburring method of mechine parts on the basis of the 3D printing technology. Combined with slice stratification mechanism of 3D printing technology, the modeling method of burrs, the initial position of the grinding tool, and code generation of deburring trajectory are researched.With the mechanical structure model in the cartesian coordinate, the improved bresenham algorithm, stepping motor speed control in s-shaped curve, the analog watchdog voltage detection, page write of EEPROM and transplantation of ?C/OS-11 and other related intelligent control theories are deeply studied in this thesis, and puts these theories into use in development of deburring technology, and the control system of deburring machine is designed by STM32 controller to research the deburring method of mechine parts.Control system of deburring machine is built based on the 3D printing technology, deburring tasks are assigned by the ?C/OS-? kernel, and human-computer interaction is realized friendly by the use of TFT_LCD touch screen. Combined with Newton-Raphson method, a high speed and high flexible and simplified accelerating and decelerating method based on s-shaped profile is applicated to the stepping motor speed control, the flexible control of deburring speed is realized, and the surface precision of the parts is improved. Several brownout detect methods are further studied, combined with internal anolog watchdog of STM32 and fast write of EEPROM, this paper proposes a new method on continuing deburring of parts when the power is supplied again after it is cut.Based on the research of above contents, the physical prototype is manufactured,and deburring experiments are realized based on MATLAB simulation of the trajectory generation and speed control algorithm. The results show that 3D printing technology can be applied to deburring of mechine parts, and models quickly,trajectory code is generated simply and expediently with the slice stratification mechanism, and achieve the motor speed control in deburring and continue deburring when the power is supplied again after it is cut.The deburring method this paper proposes is an innovative reform and application of 3D printing technology, and has very good reference and guiding significance in deburring of mechine parts.