Treatment of line cut taper and example of process designing technology apply

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Treatment of machine tool of cut of numerical control line solved a lot of traditions to machine the difficult problem that solves hard, the product treatment that reachs taper cut in acute angle, small R especially has an advantage more in the process, apply extensively already at the industrial domain such as mechanical mould, aviation, spaceflight. Punch-die unplugs the precision of modular face is having main effect to a model of the mould and service life, because of some, it is important to unplug modular pyramid spends treatment blame to be. One, the key that the treatment of great deep work and taper cut should choose great deep work and taper product treatment is line cut all the time machines an object, also be one of difficulty, the perpendicular precision that improves great deep work reachs treatment efficiency, it is one of objectives that line cut treatment pursues all the time. The sunken model look that if the graph is shown 1 times,cut of great deep work often presents and vaulted. Because machine the resistor of fluid to had compared the tension of silk of low, cut,the account that produces form of vaulted or sunken model is commonly too small, guide the distance between the head passes to wait for a reason to be caused integratedly greatly. The circumstance of sunken to appearing form, can pass the average treatment voltage when reducing cutting 2 times (servo is fiducial voltage) will solve, and vaulted to appearing circumstance, want to heighten the average treatment tension when cutting 2 times. 1.

The treatment point when great deep work is machining cut when great deep work, can raise the verticality of great deep work and cut precision through the following method. (The pulling force that 1) increases cut silk, reduce shower nozzle to guide the distance between the head; (2) uses the cut silk with thicker diameter to undertake machining, increase treatment number; (3) uses appropriative nozzle to improve the cooling result of cutting fluid. 2.

The treatment of taper cut should be nodded to taper cut, its dimension often is controlled hard, and cut efficiency and compare without taper cut photograph a lot of lower, it is especially below the case with very big taper, the difference is bigger. The environment that this basically is fluid of difficulty of bits of the platoon when be being machined as a result of taper, cutting is paid no attention to think what the reason that waits for many sided causes the parameter that reach report is unreasonable. The author is below from inside practice, the particular case when be aimed at taper cut sums up the point of a few treatment that give. (Because 1) discharges bits difficulty when taper cut, seal wire model guides the cut silk of the head pulls motive force bigger, easy fracture of wire, because this must reduce treatment energy, increase discharge time interval, increase the average tension in machining a process; (2) improves gush to shed a state, use special spray head, adopt big mouth gush increases to shed discharge on face, use close treatment method, reduce Z axis height, make the space between two nozzle the least as far as possible; (Because 3) is in in the treatment process of taper, the treatment circumference on each section layers is different, discharge clearance is different also, because should be used when this finish machining,measure than machining more cutting without taper; (4) because the reason such as the tigidity of cut silk oneself, model of fluctuation seal wire guides of head and cut silk tilt can produce an error, change hard silk to undertake machining can reducing the error that causes because of cut silk tigidity for soft silk; (5) machines program of its numerical control to compensate as a result of line cut undertake inside Xy plane, to taper treatment, its compensation and real compensation value can produce an error, if pursue,1c place is shown. The compensation when the program is A when, the compensation with real surface of the taper below the circumstance that is α in cone angle has Acos α only, the error that arises from this is bilateral for 2A(1 - Cos α ) . It is so when big taper cut, to the program compensation undertakes correction also is one of significant step that raise its cut precision. Taper of vaulted C) of B) of A) sunken model is compensated 2, the numerical control process designing of cut of taper of example of process designing of taper CNC Machining can adopt relatively quick way to undertake according to actual condition. 1.

Fixed taper machines the fixed taper with identical to fluctuation appearance process designing, the machine program of outline of planar of fiducial and referenced planar work out that needs to press correspondence only, use the fixed taper cut with inherent itself of system of cut of numerical control line to machine a function to be able to have the cut of taper next. What the graph shows 2 times is the CNC Machining of some sunken model spare parts and program code. This kind of method is intuitionistic, the program is concise, easy discovery gives the mistake in the program, it is method of commonly used process designing of treatment of fixed taper cut. 2.

Change in the treatment of process designing of taper cut treatment in real product, the fluctuation appearance that often comes up against a product each different or figure are roughly similar and taper differs change taper cut treatment. Often use the process designing method of fluctuation abnormity in the light of this kind of product, the outline that plane is about to leave on workpiece has three-dimensional model by real product, the cutting tool contrail of the cut of four-axle linkage taper that uses CAM software next undertakes process designing, the program amount that this kind of means produces is larger. Graph the 3 products that are lower part of the circle on some and the order that its process. 3.

Of product of process designing of fixed taper inverting inside the taper direction of the surface and outside face is consistent, if use fixed taper, cannot machine outline entirely come out, be like those who use fluctuation abnormity to change taper law undertakes process designing, the program amount of generation is very large, for this author union secures the process designing method of taper, will inside the method that the surface and outside face use taper inverting is in in a program in the meantime the treatment of surface of the inside and outside that finish, in assured to produce the efficiency that treatment improved while character is measured. 3, treatment of cut of line of last word numerical control is the job with a very strong practicality, need ceaseless in practice exploration, ability finds first-rate to machine parameter. The article discussed the line cut of great deep work and taper product to machine strategy only, a few treatment that elaborated treatment of taper line cut mainly want a place, likelihood the work is far from complete, welcome wide readership deliberate. CNC Milling