缸体机械加工工艺设计外文资料翻译

缸体机械加工工艺设计外文资料翻译内容摘要：

andate, the engine block machining automatic production line is posed of horizontal machining center CWK500 and CWK500D machining centers, special milling / boring machine, vertical machining centers matec30L and other appliances.(1) top and bottom, and tile covered only the bination of aperture rough milling machine dedicated to this machine to doublesided horizontal milling machine, using moving table driven parts, machine tools imported Siemens S7200PLC system control, machine control cabinet set up an independent, cutting automate the process is pleted and two kinds of automatic and adjust the state。 (2) highspeed horizontal machining center machining center can be realized CWK500 the maximum flow of wet processing, but because of equipment, automatic BTA treatment system through the builtin tray under the widetype chip conveyor and the pletion of the machining center can be dry processing。 machine tool spindle speed 6000r/min, rapid feeding speed 38m/min。 (3) The bination of front and rear face rough milling machine tool using hydraulic transmission。 control system imported Siemens S7200PLC system control, machine tools have a certain flexibility。 (4) The special machine TXK1500 this machine vertical machining center by the modification of shape, with vertical machining center features and performance, this machine has high strength, high wearresistant, high stability, high accuracy, highprofile etc.。 (5) highspeed vertical machining center matec30L of the machining center spindle high speed 9000r/min. Control system uses Siemens SINUMERIK840D control system。 (6) highspeed horizontal machining center spindle CWK500D highest speed 15000r/min.Process design basisAffect the engine block part of the process design factors are manifold. Specifically, can be understood from the following aspects.(1) product object, product drawings and technical documents related to the plexity of the engine block under the precision requirements of the process to take corresponding measures. Production targets for the fourcylinder automobile engine cylinder block。 (2) the production program, the production of the nature and type of production of the engine block the production program of 400 million。 (3) The annual effective system of work equipment, working for 320 days, with an average equipment loading rate of 80%, two shifts, 16 hours / day.3. Engine block machining process design the main contentEngine block plex structure, high precision, large size, is thinwalled parts, there are a number of high precision plane and holes. Engine block machining process characteristics: mainly flat and the hole processing, processing of flat generally use planing, milling methods such as processing, processing of hole used mainly boring, processing and multipurpose drilling holes. As the cylinder plex structure, so how to ensure that the mutual position of the surface processing precision is an important issue.The selection of blankEngine block on the materials used are generally gray cast iron HT150, HT200, HT250, there is also cast aluminum or steel plate, this engine block using highstrength alloy cast iron. Cylinder in the processing prior to aging treatment in order to eliminate stress and improve the rough casting mechanical properties.Improve the rough accuracy, reduction of machining allowance, is to improve the automated production line system productivity and processing quality of the important measures. As the foreign boxtype parts of rough quality and high precision, and its productionline system has been implemented directly on the blank line, not only eliminating the need for blank check device also saves the rough quality problems due to waste of machining time, increase overall efficiency. Therefore, the refinement of rough is to improve the productivity of the most promising way out. For the engine block production line, can be rough in parts online premilling six face, removing most of the margin, to facilitate direct online parts.machining process selection and processing of the benchmarkChoose the right processing technology base is directly related to the processing quality can ensure the parts. Generally speaking, process benchmarking can be divided into coarse and fine reference base.(1) The baseline for the online thick rough, which is particularly important the choice of benchmark crude, if crude benchmark choice unreasonable, will the uneven distribution of machining allowance, processing and surface offsets, resulting in waste. In the cylinder production line, we have adopted for the coarse side of the base。 (2) refined the base of this box for the engine block。