Electromechanical technology is amounted to to be applied mediumly in honing machine automation in

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  • source:GEOFF CNC Machining
1 foreword is in the domain of material cutting processing such as the metal, honing machines the finishing treatment that belongs to finish machining later period, its purpose is to obtain smaller exterior surface roughness, raise precision a little. Honing is counted with blade form and blade unfixed is ground provide or the method that abrasive has cutting of tiny mental allowance. Honing of 2 craft principle is used enchase the oilstone on honing head (weigh honing again) the finishing treatment that has to finish machining surface, say boring is ground again. Honing basically applies in the treatment to aperture, but the circle outside be being machined according to needing to also come with honing sometimes, planar, cone-shaped aperture and blame round hole (for example the Kong Hang is not a circle of rotor engine is ground) . Honing treatment must not have the demand before the top gem to all aperture, in addition honing need asks according to treatment, want to be able to improve dimension precision, appearance precision, exterior precision, even positional precision. Almost all the craft data that uses in industrial domain can be machined with honing. The cutting with the workpiece material corresponding choice with different basis is arenaceous, make honing can be handled to horniness and not the steel that horniness processes, cast-iron, bronze, light metal, pulverous alloy and plating chromium or the metal of other film undertakes machining. The size scope of treatment is a diameter 1 - 2000mm, the workpiece that length reachs 24 meters. The applied limits of honing already expanded whole metal machines industrial domain. Main applied field is: Auto industry, cutting tool and machine tool machine industry, hydraulic pressure reachs production of baric parts of an apparatus and aerospace domain. Made treatment of the honing in building also get applied extensively in the production of air compressor and electric machinery besides. 3 plan are designed by in the horizontal nicety honing machine that amounts to report to connect a company to develop, have taller work efficiency and character of service, this system not only the circle inside accurate honing workpiece, and can detect accurately of the circle inside workpiece " protruding is nodded " , treatment efficiency also exceeds far inside round grinder. The honing machine of automation horizontal nicety that Electromechanical technology amounts to in be based on is shown 1 times like the graph. Graph honing machine of nicety of 1 automation horizontal 3.

The core technology of 1 control system and honing of requirement of control analysis system and " protruding is nodded " detect undertake at the same time, the ply of honing basically controls detected grating and PLC to come true jointly by honing oilstone, oil pressure, because the stage amounts to 32EH00M servo to control special PLC series to be able to receive input of 2 channel differential, so need not other change-over circuit, grating feet signal can receive PLC directly, and input the scale down output of servo drive PLC directly at the same time, so that real time detects the absolutely position of machine stage. In actual honing process, because of the circle inside workpiece " protruding is nodded " existence, form a peak value of instant of electric current of motor of honing frequency conversion from this, use systematic core PLC to remember the position when peak value of this electric current is formed, control servo car next here " protruding is nodded " the frequency that honing swings, achieve expectant honing precision, at the same time OK also according to radius of the circle inside grating feet detect, automatic and abrade the ply to set. So this system uses frequency conversion load / correspondence of electric streamline sex concerns, completed pair of circles inside treatment workpiece " protruding is nodded " detect. The stage amounts to V series frequency conversion to measure high-powered drive for Quan Shi, can react accurately quickly the change that gives load current, and the stage amounts to PLC to use communication means electric current of fast sampling transducer is in for the key of this system. Nextpage3.

Structure of control of design of 2 control structure refers to a graph 2. Graph 2 servo control a construction 3.

3 strong put oneself in another's position control plan PLC: DVP32EH00M stage amounts to servo special. Transducer: VFD075V43 stage amounts to complete vector control. Servo: 3000W/ stage is amounted to in inertia series. The system is electronic-controlled ark refers to a graph 3. Graph 3 servo are electronic-controlled ark 3.

If the control parameter with crucial design of 4 man-machine interface pursues 4, graph 5, the graph is shown 6 times. Graph Nextpage of homepage of 4 systems monitoring pursues picture of 5 servo parameter 1 setting pursues picture of 6 servo parameter 2 settings 3.

Standards of 5 main techniques (1) machine bore diameter: 3-250mm (2) length of the biggest treatment: 2500mm (3) main shaft rotate speed: 50-600 turns / cent, stepless speed regulation (4) honing speed: 1.

00m-22m/ divides (5) main shaft power: 7.

5KW (6) machine stage power: 3KW (7) oil pump power: Research and development of plan of 400W4 last word runs a result to explain, systematic design is achieved expect design result. This machine tool can process all sorts of data inside round workpiece, from quench cast-iron, hard alloy, pottery and porcelain goes to steel, boron the hard weak data such as aluminium alloy, bronze, organic glass, and of material of other difficult treatment inside round workpiece. Because the stage amounts to PLC/EH series to offer high capacity to drop report to maintain data register (8000) , so control system performance has beardless other peripheral to be able to realize the memory of user craft recipe, the attempers neatly characteristic that convenient spot produces. CNC Milling CNC Machining