Be based on electric current to change the intelligent structure of material makes the application in processing a system in machinery

Prop up set 2.

Positive electricity pole 3.

O circle 4.

Insulating envelope 5.

Boring lever 6.

Boring cutter pursues structure of lever of 1 intelligence boring (what L1 is boring lever is dangerous extend length, l2 blocks length for the outfit of boring lever) graph block diagram of principle of monitoring of vibration of cutting of 2 boring treatment pursues result of test of control of forecast of flutter of 3 online boring the 1 application in superfinishing 1999, hidenori Shinno put forward to install electric current to change on the sliding slideway of workbench of fixed position exceeding essence of life the design program of material damper, pass intensity of adjusting control electric field, can make the interference of the outside is eliminated inside cutty time. The workbench that damper changes of electric current in the experiment locates precision achieves 2nm. 2 in cutting flutter online the application in restraining is based on through trends of system of online change cutting character restrains flutter this one new control is politic, we use electric current to change material designed a kind to have online and adjustable the intelligence of dynamic character changes boring lever, through successive Xiaofan exclosure changes boring system natural frequency, what realized cutting flutter successfully is online restrain. If the graph is shown 1 times,detailed boring lever structure pursues. Positive electricity pole 2 encircle for Bao Bigang, prop up set 1 with 2 relative shares regard positive electricity pole as electric current change the negative pole of material (namely ground connection) , two electrode clearance is $0.

5mm. Positive electricity pole 2 have insulating envelope 5 times with boring lever 4, electric current changes of material sealed rely on 2 O circle 3 will assure. Use vibrator to be stimulated to boring lever brace up the test makes clear, be in when span of electric field intensity 0 ～ when 2000V/mm, natural frequency has boring lever the metabolic quantity of close 30Hz. Flutter is the self excited vibration of cutting system, it is the resonance of the cutting system that the dynamic cutting force of the generation in cutting process arouses. Use the characteristic that character of trends of intelligence boring lever can accuse, can come through flutter forecast the trends of system of online change cutting is characteristic, achieve the escape system resonance, result that restrains flutter. If the graph is shown 2 times,principle of system of control of boring flutter forecast pursues. Use the online forecast that the graph shows control principle 2 times to undertake cutting flutter to if the graph is shown 3 times,dominate experimental result. Experimental system is built go up in CA6140 lathe, workpiece cantilever blocks buy to be on main shaft, installation of boring cutter criterion is on tailor-made tool carrier. Collection oscillatory signal carries the acceleration signal of ministry standard way for boring lever. From the graph 3 in can see had not increased in flutter amplitude bigger when, flutter is restrained to go down, also stay without discovery in workpiece surface apparent brace up mark. CNC Milling