To improve the cut geometry measurement of broach, optimize the cutting data of new material, we need to have experimental examination. Use in the car, get the data that measures on assorted experiment stage, development went the method of force of the process when bore of a kind of computation, the foundation of this kind of method is the diagnostic data that obtains in orthogonal spin test. If use the existing data that measures when turning successfully to undertake imitate to bore process, so bore process can get better understanding and examination pursue the method that the person that the correlation A)CAD model of 1 bore and rotational process is founded and B) optics measure, and in radius C) function the effective cutting horn of broach pursues 2 show feature of appearance of the geometry that plunge knife pursues 4 cars and got testing stand jacket to have sound of harmony of force, moment of force blasts off (AE) measures a system to pursue the cutting force on 5 broach and feed force, the bore of cutting data computation according to turning experiment is one of the vitallest cutting treatment technology. On typical rotational component, the time that bore machines is occupied about 30% . No matter be,turning still is when bore when, plunging blade or the crucial point always is to lie in successive cut usually, and those who use also is same cutting tool material, consequently with respect to this character, getting the course with the car is similar. Car and get the main distinction between car and get the main distinction between to include, bore from time to tome the blade of an above is in cut; The cutting speed on broach blade is in 0 with actual cutting change between speed, this that is to say, lower cutting condition exceeds cutting rate abominable, nevertheless the feed of center of twist drill head is very big still. The geometrical appearance change that broach edge gets blade edge to go up is very big (before horn, hind) of dip of horn, wedge horn, blade. Basis of broach horizontal blade is acerb of degree different the axial force to broach is having major effect; Because the space in bore is closed, get bits to get from the eduction in bore very large block, periodic ground discharges bits or the cooling lubricant loop under control can is opposite this kind of circumstance is improved somewhat. If use the data that measures when turning successfully to undertake imitate to bore process, so all these challenges and the difficulty that encounter when having experimental investigation to cutting bits with twist drill can get better settlement. The foundation that cutting force is bore experiment considers along broach blade edge before horn and blade dip change are very big, cutting speed depends on radius, the cutting data that ought to obtain from the turning that uses figure of geometry of similar the crucial point, perhaps connect the conversion of the cut experiment of associate orthogonality, provide a circumstance to try to the force when bore imitate, try to check through real bore test. Ought to estimate at the same time, it is in the middle of broach place of heart horizontal blade, cutting speed and feed speed photograph are compared very small, bore process can have a description according to model of Kienzle cutting force not only, and still must try to expand additionally with deformation force portion. Graph 1 those who show is this kind of method, and the optimizes bore geometry appearance possibility that arises from this. On broach, the span of horny G model is in before on horizontal blade - on 50 ° and external diameter + between 30 ° . As a result of the diameter of the reason of horizontal blade or broach pointed ministry, advocate blade is not to be located in on radius ray. This that is to say, it gets through the deflection of K/2 one depends on the blade dip L of radius. Graph 2 express to come from CAD data and use in all anxious measurement microscope measures analysis of taking broach geometry appearance through optics. Bore distributings the gets blade geometry figure that to can be among the analysis in homocentric fan area attend to reachs by the side of edge broach blade changes, bore can differentiate for homocentric fan area (3) seeing a picture. If simple hypothesis is the cut function inside area of a fan,be constant, so the data in coming from a series of tests that use appearance of geometry of relevant the crucial point and cutting data, must also can conversion arrives on bore. Its cutting force is complete bore the summation on all fan area. Graph of 3 imitate A) and the homocentric fan area of the bore when the experiment investigates B) because to differentiating the train of thought of model of fan area formulate still needs to use the edge geometry figure that has adjusted according to broach and cutting data to undertake many turning experiments,differentiate, need research and development consequently a kind of new model, it is OK the power that from the orthogonality of turning the derivation in fiducial cutting gives broach to go up and moment of force. For this, the influence of all sorts of role that must understand edge to go up and cutting speed to force. To build a model to bore process, should calculate a these parameter to be opposite above all the influence of specific cutting force and feed force. According to the volume share of radius each have different, through sue for peace with Kienzle formula computation gives the corresponding power of complete bore. To decide the parameter of the model, many measurement undertakes in needing to experiment in car and the treatment that get. For this, turn in the cutting tool of lathe of a NC site of on the tower each treatment installs dynamometer of force of cutting of a Kistler Typ 9271A(of platform of Typ 9121 and bore of a Kistler sees graph 4) . These experiments can be in different cooling and lubricant condition comes down to undertake. The foundation of computational cutting and feed force is Kienzle equation, this equation parts to show this kind of strength with the product of specific cutting force and feed force and cutting area. Force of cutting of influence of edge geometry appearance is well-known, specific cutting force and feed force depend on greatly edge geometry appearance, and edge geometry appearance is edge radius change on broach. Accordingly, must be in the first pace, from 0 before the compare depend on sb or sth for existence that orthogonal car of horn experiments and measures the horn before going out and blade dip from inside the bore experiment of broach of use fried dough twist concerns. For example, gave out to beg the turning that go out and bore from inside measure advocate the ratio of force of the cutting on edge. The corrective factor of G of the horn before these values can be passed and blade dip L is mutual conversion. Compare with the cutting ability photograph of turning, the cutting ability of bore also can use coefficient AC or BC tries to express. The conversion of horizontal blade and this is similar. The formulary ground that seeks cutting power according to Kienzle the force of Kienzle is formulary, can use in the 2nd pace in front affirmatory Kc1. The value of 1 determines advocate the cutting force on blade and horizontal blade. In the meantime, what consider volume of the cutting when using horizontal blade even is corrective. This kind corrective accord with a such facts: Broach forms acerb circular fan division in the cutting bulk of this place, is not the square that turning forms. Horizontal blade area happens be out of shape the cutting force of complete bore is to be below the case that considers action radius advocate the summation of blade and force of horizontal blade cutting. The cutting power that with the measurement when the car data and for bore computation give or feed force are compared and the foundation is in the power that measures when bore, made clear the error that regards feed as function. Accordingly, be in especially horizontal blade area, be in the center of broach namely, the cutting rate here is very low, still need to be opposite over there happen be out of shape the component of force of the process make a model. Be out of shape of portion it is more important to cutting force to build a model to be compared to feed force. Use other factor (rise Cheng corrective, be out of shape portion) , can be opposite in the model the influence of cutting speed, and be out of shape portion tries to consider additionally. In the meantime, be out of shape portion comes out from the derivation in waiting for the tensile strength Rm that processes data. According to this kind of patulous model, get the power on blade distributing show in the graph 5 in. Here especially conspicuous is, feed force still basically depends on the component of force on horizontal blade. Well-known, broach is more pointed, this component of force is smaller. Computational model must continue the investigation that research and development gets power to helix makes clear, below the circumstance that changes considering cutting and blade dip, it is OK to use Kienzle formula to broach advocate the force of blade makes a reliable model. To horizontal blade, besides contain cutting bulk besides corrective cutting portion, still need to have additional be out of shape portion, according to the tensile strength of workpiece material, offerred the first proposal to this. And parameter, pointed to other bit acutance, and the uses a proposal model in other data, still need to try to examine, still need to continue to try to refine to the model when necessary. CNC Milling