Use at the car to produce a process to detect the development tendercy of equipment

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In an efficiency tall, program can be reasonable, reliable in the product line that the ground assures product quality, deploy detect efficiently equipment is essential condition. Before, detect technology and manufacturing process lack are united in wedlock cheek by jowl, compare production equipment, the enterprise exists to be willing to be opposite not quite really the tendency of former investment, but should detect when technology and the connection that produce a course are closer and closer, the circumstance differred completely, because such, all sorts of online detect equipment obtained rapid development. Online detect a of equipment main demand is as can good as manufacturing process land matchs, in an attempt to gets used to craft demand to the greastest extent. However, the diversity that manufactures technology decided to be contented and different characteristic, make online detect the variety that equipment develops is various. Carry out in development of this kind of product flexible had changed, common the concept with strong sex, use the design method with the modular height that includes to measure unit inside. Graph the requirement that the addition that 1 high accuracy matchs to grind treatment plan to measure component of principle high accuracy actively what 2 high accuracy deserve to grind treatment raises to testing system is reduce oily bad news, noise, raise the dynamical sex of travel, undoubted meeting offers many tasks to the development of the car, development. But there also are a lot of jobs to want to do in workmanship respect, the treatment precision that raises crucial component and cooperating precision is a main job, and go up in this foundation, also created a condition to make the new product, component that has high accuracy demand. In finishing the high accuracy of component to machine a process, online detect the effect that equipment produces is rising ceaselessly, but this is not pure ground relies on to rise detect the precision of equipment will come true, pass however treatment and detect both organic union, assured precision already, improved efficiency again. If be in grinding process, relying on a machine tool to assure work measure precision is very difficult, because get of the fluctuant, emery wheel of each orgnaization wear away, the influence of a lot of element such as the competence of the each little change that machines parameter, slideway and the exterior condition of the part that hold clip, environment that machines area and jockey person. Accordingly, to grinder is chosen and configure equal active amount appearance system appears very necessary. Graph 1 it is the crucial part that contains active measuring instrument one kind to be used on fuel injection pump -- oily chew occasionally the plan of active grinder job that deserves to grind. In the graph, occasionally valve base (cover) although the public errand of internal diameter has 30 μ M, but with X of force plunger external diameter between cooperate precision the demand is very high, the fluctuant limits with unoccupied place meantime needs control to be in less than of 1 μ M, used what the graph shows 2 times to survey a system for this. The measuring instrument workbench on the right side of undertakes detecting to valve base internal diameter, the signal of output enters grinding machine of active measuring instrument electronic-controlled part, make grind what the as suitable as this valve base force plunger measure that give can ensure place needs to cooperate precision. To assure to realize above to ask, two kinds of repetition that measure appearance precision should is 0.

1 μ M, and the Cp of process capability index of grinder must is more than 1.

33. Usually, the metre that grinds treatment in 7 ～ 8 seconds are controlled, frequency is taller, match the quality that grind to ensure, to measuring each character of the sensor in the system, like function of character of linear, temperature, repeatability, switch and control the rationality of software has very high demand. Flexible the measurement unit with good, high reliability pursues 3 new-style and flexible the part measuring a head that spends active quantity appearance pursues the 4 active quantity appearance that contain 3 to measure a head detect equipment pursues the 5 active measuring instruments that are used at prejudicial circumgyrate grinding pursue 6 touch, no matter be the check between active measuring instrument, working procedure,provide, or (half) autoverify machine, although be commutation only,be measured work standards, had contained adjust, change the problem of fittings, should not say to encounter other condition more, if the change is measured workpiece breed or face different situation. Especially to measurement unit, adjust link to reduce its dependability, stability necessarily more, and phyletic and various increased difficulty to maintenance, management again. Graph the 3 measurement unit that are a kind of new-style and active measuring instrument, because can match arbitrarily, very agile, what have height thereby is flexible with dependability. Because in the design the integral measurement unit the tradition discloses the opposite independence, two parts that can constitute at will again,this is hind, make every measure a head identically not only volume is minor, and the structure is simpler, stronger. Measure a system actively what form from this to be able to be used at the different grinding of all sorts of type grinder to machine, also accept the restriction with installation narrow space no longer. To a few more special situations, if need,very long ability can extend measuring staff be measured also can suit when area, can assure precision. Anyhow, no matter be mixed with the grinder at what type,stem from what to detect purpose (if internal diameter, external diameter, height, ply is mixed,width detects) the requirement that can satisfy an user well. Still having a characteristic is, this kind of span that measures a head can achieve 25mm, accordingly, its scope of application still can enlarge a few more special situations, the tall to protruding control in resembling camshaft grinder. It still can apply at dividing to grind the other machining way beyond treatment even, those who make raise active measuring instrument is flexible and true be able to come true. Graph the 4 example that are a model, measure the organic combination of the head through what 3 the graph shows 3 times, can measure the external diameter of workpiece and length at the same time in grinding process. Use such measurement unit, reduced the workload when quantity appearance is overhauled and difficulty, go out to measure the when situation inside the head now when the problem especially. And installation is debugged also become easy, can undertake outside machine even. Another advantage rose greatly namely whole and active the dependability that surveys a system, stability, accordingly, use the measurement unit of this kind of type extensively at producing a course, corresponding maintenance man-hour will decrease apparently. The machine of active measuring instrument that is used at grinding of commutation of work center position makes the rapid progress of technology and numerical control system, make a kind of technique that changes ceaselessly in position of center of the work in grinding process also received more general application, measure actively to can be carried out on the grinder of this kind of type, have a kind of corresponding measurement unit. Treatment is ground in this kind in the process, work center around circumgyrate of main shaft axes, because this is told to active measuring instrument, its measure what woman's head-ornaments faces is prejudicial circumgyrate motion, undoubted, the measurement unit of appearance of groovy and active quantity is used hard at means of this kind of grinding. To solve this difficult problem, cooperate through making a firm with relevant machine tool, development went a kind of special active measuring instrument, and already was used at production. Graph the 5 working sketch map that are this kind of active measuring instrument. Showed work center is mixed around direction of revolving of main shaft axes in the graph orbit, and the athletic condition of emery wheel, from the graph 5 still can see, the measurement unit that measures appearance actively is to secure the end face that wears in emery wheel to go up, of its front " V " model piece insert to workpiece just like a broach, wear the upside in workpiece, it is facilitating operation, "Broach " outside the stretch layering that side still installed a lengthen. Measure a head to be located in broach, namely " V " model piece in the center of, wear what go up in workpiece " V " model piece have fixed position already (automatic centering) action, it is when measuring workpiece external diameter fiducial. And the flexibility in measurement unit structure, can ensure grinding process is medium " V " model piece clingy workpiece, whole measurement unit is equivalent to dogging orgnaization, accompanying from beginning to end have prejudicial revolving work, carry out well and truly online detect. This kind of form detects the development of device is successful, the difficult problem that measures actively is used in solving prejudicial grinding to machine. Because prejudicial grinding way is opposite traditional grind treatment craft to have its advantage, the application of aborning increases ceaselessly, reason increases by degrees to measuring the demand of appearance actively to also be in. Measure what use in producing a course absolutely since pattern is long-term, use at producing a process to detect mediumly equipment adopts what measure way quite to be in the majority. Although this kind of means has the good point with test precision and higher work efficiency, but in " flexible " on have limitation. Reason is in certain circumstance, application measures the online testing system of means to also producing not little effect absolutely, this is in a few pairs flexible the circumstance with higher demand is more outstanding, appeared to measure 3 coordinate even measure chance is direct configure the circumstance on product line. But, have representative case most or touch hairdo probe to be used at numerical control machine tool, machining center, because off-the-peg numerical control system is mixed,measure program use make things convenient for somebody be accommodating technically, use at detecting mostly so the position of workpiece or cutting tool, condition. The characteristic with this kind of the oldest system is flexible good, cost is low, be in especially those are opposite for when manufacturing rhythm is slower, can offer more abundant the working procedure that measures time. Graph 6 it is to configure what go up in a machining center to touch hairdo to measure an example that working. In addition, use laser and optics of infrared blame contact to detect measure means of the principle to also apply somewhat in producing a course absolutely. Although this kind of means often gets of ambient conditions restrict, but the ability that because they have rapid ground to undertake high accuracy,measures absolutely, and gain headway ceaselessly as the development of corresponding application software, reason is producing the applied domain in the process to expanding. Graph 7 it is to use infrared ray / the measurement of CCD photography means principle sketch map. Graph 8 it is to use this kind to measure principle countershaft kind the example that the spare parts has external diameter detects, graphic representation equipment can amount to the workpiece of 40mm to undertake be metricaled at many o'clock continuously to diametical span. The resolution of the instrument is 0.

1 μ M. Measure M of precision U95=3 μ , repeatability is 1 μ M. Current, developing what change of can applicable diameter amounts to 80mm to detect equipment. This kind of online testing instrument suits those product line is medium needing most the 100% process that have metrical. Camshaft examines finally to be improved of craft of grinding of chance plan camshaft ceaselessly already lasted old. Recently, support uses CBN(cubic nitrogen to change boron) emery wheel improved efficiency of cutting speed, production further again. In car component, camshaft figuration grinding is considered as one of treatment working procedure with most slashing requirement, in efficient grinding process, the change of the little change that because mechanical part is earthly,produces, change of emery wheel condition or other job parameter meets what affect cam profile directly to make precision. On the other hand, it is those who reduce the sources of energy to use up, the demand of the appearance of convex to car engine axle and dimension precision is higher and higher also. Accordingly, in the terminal of camshaft product line the setting undertakes total number checks work the practice is increasing. For this, developed the autoverify aircraft with rich function, graph 9 be among them a kind measurement partial myopia pursues, through using many measure sensor absolutely to camshaft each parameter undertakes detecting. Graph 10 it is the workpiece that be measured and its sensor (measure a head) the condition is arranged in what its go up, see from inside the graph, pilot cam journal needs to go up in every, decorate have a pair of Xiang Chuangan implement, and to former, still can pass among them taper of implementation of a paragraph of distance measures a deflection that measure a head. Detecting when cam, adopted consult photograph adjacent of two journal measure an outcome, build first as standard central line, measure its to rise Cheng and phase angle next, ensured the dependability that measures a value. Except undertake journal, cam of a series of parameter outside detecting, return the rate that can achieve cam, acceleration and the measurement of all sorts of parameter related to basic circle. Whole process is not in in 20 seconds finish, accordingly, this equipment can be put already online outside make what workpiece checks finally use, also can establish ties it is in automatic product line, detect as labour, 100% ground are carried out to the camshaft that pass measure. Graph machine of 9 camshaft integrated control measures partial plan to pursue machine of 10 camshaft integrated control measures a dot to decorate a graph to pursue 11 cam nondestructive detects working plan pursues 12 full automatic measure head nondestructive to detect more the determines to blend in manufacturing process partly nondestructive of equipment is online detect in producing a course, to component (be like camshaft) the requirement that executive nondestructive detects is more and more pressing already, test content includes: Material is qualitative injury of undesirable, production blemish, knock against and grinding burn (mark) wait. Current, the online nondestructive that uses eddy current to explore a principle to develop detects the crankshaft that equipment uses successfully in engine, camshaft, the axis such as the drive axis in gear-box kind, lever kind the product line of car component, and the system of soft, hardware of equipment already realized standardization. The work efficiency of this kind of equipment is very tall, can be inside very short time to be being measured entirely the surface is finished detect. Graph the 11 processes that are made check by order for each cam on camshaft, probe is not moved, and workpiece circumgyrate. Graph 12 be another kind full automatic nondestructive detects the myopic graph of equipment test part, by check object also be camshaft, with the graph 11 different is, be aimed at 10 cam that require a test, this plant layout measure a head 10 times, can complete pair of work namely because of this circumgyrate a week detect, time-consuming only 16 seconds, efficiency is very tall. Current, configuration is producing the spot, breed of the instrument that is used at workpiece process to detect, equipment is increasing, but a lot of still develop level at development. As to the test that collects with oppose data undertakes processing and statistic are analysed, and relevant network transmits a system, it is another kind of product. CNC Milling