Matters to be noted for machining parts
When machining the parts, When the work piece is too high, To be layered and rough-processed with knives of different lengths, After rough machining with a machete, Remove the residue with a small knife, Process the plane with a flat-bottom blade, Less ball head knife, Reduce the processing time; If there are slopes and an integer, Machined with a evel knife, At the same time, to set the tolerance reasonably, Balance between the machining accuracy and the computer calculation time, Do several more steps, Reduce the air-cut time, High hardness of the blank material, Select reverse-milling; Low hardness of the blank material, So choose the milling edge, Crude machining, reverse milling, precision milling, milling; Good toughness of the cutting tool material, Low in hardness, Suitable for rough machining, Poor toughness of the tool materials, High hardness, Suitable for finishing processing.
Mechanical processing plant CNC machine tool processing parts of clamping way also want reasonable selection positioning benchmark and clamp scheme, on the selection of the benchmark, generally follow the benchmark unity and benchmark overlap two principles, in addition to these two principles, also need to consider as far as possible to complete all surface treatment, therefore, should choose to facilitate the surface processing positioning method.
During the workpiece, the machining of all surfaces of the workpiece shall be completed with the influence of the workpiece, the length of the stiffness of the tool on the machining quality. The fixture used in machining shall be assembled by general parts as far as possible and can be adjusted to shorten the production preparation period.
When arranging the processing sequence, the mechanical processing plant should follow the basic principles of surface before hole, rough machining before finishing, through the centralized processing of the tool, can avoid repeated use of the same tool, reduce the number and time of knife change.
For the hole system with high coaxial requirements, all the machining of the hole system should be completed after one positioning, and then the pore system in other coordinate positions should be reprocessed to eliminate the error caused by repeated positioning, improve the coaxial degree of the hole system, select the tool point and replace the tool point. Once determined, it should be replaced.
