CNC parts processing how to ensure quality?

Machining center in the process of machining mold, the accuracy and surface processing quality requirements are increasingly high, in order to ensure the quality of mold processing, we should consider the choice of machine tools, the choice of shanks, the choice of tools, machining program, program generation, operator requirements and other aspects. I. Selection of high-precision high-speed machining centers with the improvement of product design requirements and the development of high-speed high-precision machining technology is becoming increasingly mature, thus greatly improving the quality of CNC machining of molds and greatly improving the speed of mold processing, reduce the processing procedures, shorten the production cycle of the mold and the number of clamping, sometimes eliminating time-consuming clamp repair work. Mold high-speed and high-precision processing has gradually become an important part of the technological transformation of mold manufacturers, high-speed CNC machining centers to replace the traditional low-speed processing has become inevitable, and the development of mold manufacturing technology will also bring us a richer product experience.　　Two. The use of suitable shank structure of high-speed high-precision machining centers, will also lead to the update of the relevant process equipment. In particular, the tool on the quality of CNC machining, the impact of the toolholder will become prominent. In the rotary type of tool machining system, the chuck and the machine tool (or its combination) of the connection is tight, in order to ensure that the tool machining performance of the realization. General frequently used machine tools and tool shank interface with HSK hollow shanks and BT-type tool shanks and other two types. Machine tool spindle and BT tool shank taper interface taper for 24:7, the traditional low-speed machining is suitable for the use of this tool shank connection, due to the BT tool shank and the machine tool spindle is only a taper with the role of centrifugal force in the high speed will make the taper with the increase in clearance, thus affecting the quality of CNC machining. Generally when the spindle speed exceeds 16000 rpm, we will need to use HSK hollow shanks, HSK shank positioning structure for over-positioning, to provide a standard connection with the machine tool, in the machine tool under the action of tension, to ensure that the short taper and end face of the tool shank and the machine tool close to the fit. III.. Selection of suitable processing tool tool reasonable use and selection will be an important factor affecting the quality of CNC machining. Carbide cutting tools are more and more widely used, high-speed machining of coated carbide will replace most of the sharp steel tooling, including reamers, ball-end cutters, boring tools and other simple tools, coated carbide will play an important role in high-speed machining of cutting tool materials, applied to the regular most of the machining field.　　Usually we know that in roughing we will use large diameter tools for processing, in order to save costs and reduce the difficulty of tool manufacturing, we will use machine-clamped carbide inserts, as much as possible to make the roughing chip removal; in semi-finishing with high speed and high feed insert tools, so that semi-finishing fast knife; in finishing as much as possible to use high-precision rounded mirror inserts in the carbide toolpost to ensure that the tool and the toolpost strength, this will be able to ensure that the tool and the toolpost strength. Strength, which will be able to maintain the correct machining accuracy at the same time to save the expensive cost of selecting the overall alloy tool. In the processing we also need to pay attention to finishing parts on the inner contour radius must be greater than or equal to the radius of the tool, the choice of radius is less than the radius of the corner of the corner of the tool to the arc interpolation of the way or diagonal interpolation of the way to process, so that you can avoid the use of straight-line interpolation and the emergence of the phenomenon of overcutting, to ensure that the quality of mold finishing.　　IV. CNC process program in high-speed high-precision machining in the CNC process program design importance has been raised to a higher position, must be controlled for the whole process of processing, any error will have a serious impact on the quality of the mold, so the process program will play a decisive role in the quality of processing. CNC machining process design can be regarded as a system of process control between the parts blank to parts processing and molding of the state of the program. Good technology program in the whole design process is more difficult, need to be summarized through continuous practice and modification in order to get, in the design process to consider a large amount of information, the relationship between the information is extremely intricate and complex, which must be through the program designer's practical work experience to ensure that. Therefore, the design quality of the process program mainly depends on the experience and level of technical personnel.　　Usually a complete CNC machining process planning, probably including the following: 1) CNC part selection.　　　　2) Machining method selection.　　　　3) Determine the clamping method of the part and select the fixture.　　　　4) Positioning methods.　　　　5) Inspection requirements and inspection methods.　　　　6) Selection of cutting tools.　　　　7) Error control and tolerance control in machining.　　　　8) Define CNC process.　　　　9) Sequencing of CNC process.　　　　10) Cutting parameters selection.　　　　(11) Preparation of CNC process program.　　Ltd. is a professional engaged in precision mechanical parts processing, non-standard parts processing and titanium alloy processing of specialized companies for food machinery, aerospace, solar energy equipment, medical equipment, electronic equipment, photoelectric communication equipment, office automation equipment, industrial equipment, household appliances and other industries to provide various types of precision mechanical parts processing and tooling processing, Edelweiss electromechanical in the high-precision titanium alloy parts processing, shafts, shafts, and other parts. We have rich experience in high precision titanium alloy parts machining, shaft parts machining, semiconductor equipment parts machining and so on. We are pleased to answer your questions.