Solve the design of the mechanical structure of the CNC carving and milling machine tool

General of the three coordinate measuring machine can only be measured space three-dimensional coordinates of the object, if the object is hollow out, the bottom has a concave surface will be helpless. In the art of engraving, DiaoKeJian usually has a complex type surface, then the general three coordinate nc carving and milling machine tool is a dead zone in carving, so request to seek a better engraving device, make its within a certain range of space can achieve arbitrary space with arbitrary attitude. To achieve this, burin should have at least five degrees of freedom, namely remove space rectangular coordinate, three other plus two rotation Angle. Based on this, CNC engraving machine co. , LTD reference structure and kinematic characteristics of articulated robot, we design a five dof joint type CNC engraving machine. Its structure is similar to the PUMA560, but no PUMA560 hand rotary joint, without this joint because sculpture carving knife when little or no rotate around its own axis. In order to make the burin within a certain range of space can achieve arbitrary space with arbitrary attitude, burin should have at least five degrees of freedom, at the same time should also be flexible operation, easy to manufacture, simple calculation. Began to have two choices: tandem robots and parallel robot. Considering the high precision parallel robot while institutions, but manufacturing is more difficult, at the same time are solutions for large amount of calculation, the results a multiple-choice, and work effectively under the same size range is smaller. So integrated various performance indicators, in the case of satisfy the basic requirement for CNC engraving machine co. , LTD chooses the degrees of freedom is 5 series manipulator joints. And considering the engraving knife is easy to operate and must have a certain strength, so the structure material selection for activity on the part of hard aluminum alloy as the basic materials, stationary base part and shaft adopts steel, so that both weight and can meet the strength requirement. The length of the mechanical arm according to the effective activity space of the carving knife. After the design of the CNC engraving machine engraving robot structure diagram as shown. CNC engraving machine engraving robot mechanical structure diagram