Multifunction Developed Micro-precision CNC Machine Tools

With the development of real economy and manufacturing, people grow demand forminiaturization product. Machine tool manufacturing industry currently lacks the highperformance, high efficiency, intelligent, combination micro precision equipment.In thisthesis, a miniature machine tool has been developed,which has characteristics of simplestructure, functional diversity,and high precision.It is the uppermost production equipment ofclocks and watches, instruments and meters, hardware, medical equipment and military,whichis suitable for small parts processing. Micro-multi-function precision CNC machine tool cancomplete the multichannel working procedure on a single machine.Refering to the traditional small features on a single machine tool and the processingrequirements of micro-parts, the overall demands on the machine tool were put forward. Thereasonable indicators of basic technical parameters and accuracy of high-precision micro-CNC machine tool were identified. Combined with the practical feasibility of the operationand the traditional machine tool design the overall design scheme was established.The modularizing design was used in this thesis. First of all, the machine tool is dividedinto two major functional modules. Then it is detailed as spindle drive system and theclamping parts, the three dimensional precision worktable, pedestal, tailstock, vertical millingfeeding device and supporting equal module.To make full use of existing mature technologyat home and abroad,the author makes structure selection and improvement, innovation anddesign. Ultimately the combination of machine subject and attachment realizes the lathing,milling, grinding, drilling, tapping and other multi-channel working procedure of processing;And the three-dimensional modeling of the machine tools was established bythe Computer-aided software Solidworks to make layout design reasonable; Use ANSYSsoftware, the structure static analysis was done for the key parts such as the main shaft, thestructure of the support beam,which can check and verify the rationality of the design. Thequalitative analysis of accuracy of CNC machine tool was made and improvement measureswere put forward.