Casing solders combination be out of shape control whole strategy

Some casing unit is combined partly by Jing Zi of component of turbine wheel shaft, turbine with unit of turbine small box 3 parts are comprised. Jing Zi is combined partly in the mainest component is casing solders combination, its interior is assembled Yan Huan is sealed to combine outside oriented lamina and rotor lamina (common says " beehive " ) , exterior of 6 thermocouple, the side outside casing has 3 to measure press aperture and 3 observation aperture. This casing solders combination belong to casing of large Bao Bi, the structure is relatively complex, casing interior has 6 groove, cell body flank has U chamfer, side solders outside 12 protruding stage, before, hind install edge getting to have opening. The most serious problem that small box of large scale computer and thin wall casing face in treatment is the sidewall in treatment before reaching, hind installation edge is easy cause be out of shape; The spare parts also can be caused likewise after solder be out of shape. The in-house cloth of casing has chamfer of much talk different annulus, and dimension lesser, precision is taller. Casing material hardness bigger, treatment is difficult. Solder with respect to this casing below combine an a few important processes in developing a process to have analysis and introduction. Of craft course make certain treatment program be combined originally soldering by housing of turbine small box the composition after protruding stage. Original treatment program is to machine all casing dimension, the protruding stage after soldering to casing again undertakes machining, the spare parts after this meeting brings about treatment is out of shape after solder great, spare parts both neither accords with a design to ask, yan Huan is sealed to combine outside also affecting oriented lamina and rotor lamina at the same time assemble normally. After solving a spare parts to solder, had been out of shape the method of big effective is pair of sheet with combination surplus undertakes adjustment, will divide casing external all and final measure leaves the combination after soldering entirely treatment, will solder thereby bring be out of shape combining the take out in treatment. Make housing of casing of course of casing housing craft serve as sheet, advanced, hind installation edge and inner ring chamfer stay have 1~1.

The surplus of 5mm. Treatment course divides thick car, half fine vehicle and fine vehicle treatment, outside casing housing side still is gotten have 12 radial opening, for soldering use when protruding stage. Make casing solder set a craft line main purpose is place of take out housing stays surplus and after soldering be out of shape, because this machine adds craft course to be fine vehicle certainly, mill interior inclined chamfer, before boring, hind the aperture side installation, appearance of mill protruding stage and bore hole tap. The work out of numerical control program all machining of this casing basically establish car, horizontal by numerical control 5 coordinate machining center, vertical the equipment of high accuracy numerical control such as 4 coordinate machining center finishs 4 coordinate machining center and horizontal, because the work out of program of this numerical control is right the treatment of the spare parts is crucial. No matter be housing,the car is machined or solder combination, car treatment is the working procedure with this the most important casing, because whether course of this numerical control is reasonable,matter to a few important measure and form directly whether can tolerancepublic errand satisfy design requirement. Casing is in-house all sorts of annulus chamfer (graph 1) extremely complex, treatment difficulty is greater. Graph the CAM function that a task uses UG NX4 software undertakes assisting process designing. In build a model, numerical control program is created after establishing the procedure such as operation and aftertreatment (graph 2) . VERICUT software imitate is used to emulate inspection program to whether exist to remain and be cut too after the program is generated wait for unreasonable place, undertake to the program fine fine tuning is rectified. Graph 2 mill treatment and bore the numerical control program of the mill treatment of this casing and bore is woven by handiwork, VERICUT is applied to emulate likewise later examine its rationality. Software of numerical control emulation VERICUT is emulation treatment software, cannot generating program; Can program of imitate G code, include subprogram, grand program, loop, jump turn, variable, and general CAM software is imitate knife only course or the file intermediate. With this software but the accuracy of desired result machine program and argue knows an error, the method taking a knife that be like blueprint or material, mistake contacts when interpret blueprints mistake, process designing is fast and not accurate, mobile, collision that happens with tool clamping apparatus, CAD/CAM and aftertreatment implement the stress of the generation in treatment of mistake, analysis. The interference that when function of imitate of use VERICUT machine tool can check a machine tool to machining a process or change a knife, produces and collision, specific application includes the following measure. Call corresponding machine tool (machine tool file) if the library is medium,need to consult without corresponding machine tool machine tool him data builds a machine tool. Above all according to the machine tool concern of each axis motion founds tree of machine tool structure, can undertake G code imitate so, but cannot check a machine tool the interference of each place and workpiece or clamping apparatus collides, because this needs the base that establishs in machine tool structure to go up,add machine tool part, complete emulation machine tool is namely after finishing. Call and need to undertake the configuration of specific aim, if circular arc dictates setting of format, special statement and workbench rotate,install etc, in proper configuration only the system controls a file, the ability after making its and spot treatment machine tool consistent assures to machine assuring validity. The wollens here wants as identical as actual wollens, so that cutting tool is checked to whether be put in the mistake such as collision, interference in emulation process; After workpiece is used at emulating, with cutting the model undertakes be comparatived automatically, the analysis is cut too with rudimental circumstance. Both can be founded directly in software, and the format such as the IGES that needs to wait for three-dimensional software to output interface to generate VERICUT to be able to identify through changeover by UG, MASTER CAM to complex model, PLY, STL is hypostatic, use at treatment to emulate reach automatic analysis to compare. Other measure still includes to add a program according to treatment craft order, build and call origin of process designing of cutting tool library, set. After completing afore-mentioned step, can undertake below fictitious environment the spare parts is machined, the analysis undertakes to the spare parts after treatment ends, the substance after crossing design substance with cutting makes be comparatived automatically discovery is cut too or remain thereby surplus. Can whole perhaps divides area to compare, can set noncombatant duty afresh according to relative precision. Car treatment problem and the casing diameter that because this task place studies,the means of settlement is out of shape by the side of installation are bigger, because this is before car treatment, hind when installing a limit easy cause be out of shape, choose correct route taking a knife for this need. The meeting after wearing away as a result of cutting tool produces greater stress to the spare parts, this force points to workbench by the side of outfit of perpendicular Yu An; Be linked together plus the inside of the spare parts and sidewall, rigid and opposite better, adjust because of this will take cutter track line outwards by centre of turning circle for inside extroversion, can reduce what cutting tool wears away to be caused to the spare parts to be out of shape to the greastest extent. In addition, because combine a surface side installation angular to fixed position aperture, the meeting when razor blade of as a result walks along here makes minim of spare parts happening is out of shape, reduce sheet for this need herein gives the surplus that sets a place to stay. Exterior luminosity because spare parts diameter is bigger, in car treatment, near the installation edge that was not secured between casing and workbench outside the wall produces shake grain easily, affect the exterior surface roughness of the spare parts. Serve as with balata tire in the side outside the spare parts auxiliary so that,prop up damping, can avoid shake grain generation. When machining housing, because exterior area area is larger, lathe tool needs longer way in the process that completes cutting, razor blade of later period of as a result is not quite sharp and bring about exterior luminosity not ideal, because this needs one divides into two of will original order. The most important in the choice car treatment of cutting tool is the choice of cutting tool. Casing interior structure is complex, should choose slant suitably the treatment spare parts such as knife, ball knife. In sheet in treatment, because in-house U chamfer is narrower, because this need changes,grind knife handle to provide height in order to reduce a knife. Bore hole problem and aperture of edge of installation of means of settlement slant small because casing material hardness is extremely tall, often produce bore diameter to slant when machining aperture small issue. Increase a reaming working procedure more on original bore craft, so that the surplus decrescent when making be machined with reamer finally reduces an error. Position of the opening side main aspects installation is spent unqualified in treatment main aspects installs Bian Kongshi, because cutting force causes installation edge easily to be out of shape downward, bring about opening position to spend do not accord with a design to ask. Join in treatment auxiliary prop up remove the cushion side installation, the installation limit that can reduce cutting force to cause is out of shape. CNC Milling