Inside the grinding of round face can undertake on round grinder inside, also can undertake on all-purpose cylindrical grinder. The main type of round grinder has inside common inside round grinder, inadvertently inside grinder of the circle inside round grinder and planet. Of different type inside round grinder its grinding method is not identical. 1. Inside round grinding method (1) common inside the grinding method of round grinder is common inside round grinder is a the application in production is the widest kind, the graph is shown 1 times for common inside the grinding method of round grinder. When grinding, differ according to the appearance of workpiece and dimension, even if grind a way,can use (1a seeing a picture) , the horizontal stroke grinds a way (1b seeing a picture) , some are common inside the end with the special stock on round grinder wears device, the aperture inside the grinding in clip and end panel can be assembled in (1c seeing a picture) , assure easily not only so inside aperture and the verticality of end panel, and manufacturing efficiency is taller. Graph 1 common inside the grinding method of round grinder is like graph 1a place to show, even if grind the motion of law machine tool to have: The high speed whirligig of emery wheel decides athletic Ns; Head wearing drives workpiece to rotate Fw of circumferential feed motion, emery wheel or workpiece make Fa of fore-and-aft feed motion along its axes move back and forth, be in every time (or a few) after journey of move back and forth, workpiece makes Fr of transverse feed motion along its radial. Method of this kind of grinding applies to appearance regulation, facilitate gyral workpiece. The horizontal stroke grinds a way need not Fa of fore-and-aft feed motion, if graph 1b place is shown, the horizontal stroke grinds a law to apply to grinding to contain the aperture of groove surface. (2) inadvertently inside graph of round grinder grinding is shown 2 times for inadvertently inside the grinding method of round grinder. When grinding, 4 bearing are in workpiece gyro wheel 1 with guide pulley 3 on, impaction annulus 2 make workpiece leans closely in guide pulley 3, workpiece namely by guide pulley 3 drive rotate, realize Fw of circumferential feed motion. Emery wheel besides finish advocate outside athletic Ns, still make Fa of fore-and-aft feed motion and Fr of motion of periodic transverse feed. When treatment ends, lay out of direction of A of arrowhead of impaction annulus edge, so that hold discharge work. Method of this kind of grinding is applied to large quantities of mass-produced in, outside round face already the Bao Bi workpiece of finish machining, if bearing is covered,wait. 1, gyro wheel 2, impaction annulus 3, guide pulley 4, workpiece pursues 2 inadvertently inside the grinding method of round grinder 2. The craft characteristic of round grinding reachs the circle inside applied limits inside grinding and outside round grinding photograph is compared, treatment condition is poorer, round grinding has inside a few more the following characteristic: (1) emery wheel diameter is machined the limitation of bore diameter, the diameter is lesser. Emery wheel is ground very easily blunt, need often nap and change, increased auxiliary time, reduced productivity. (2) emery wheel diameter is small, although emery wheel rotate speed is as high as minutely tens of thousands of turn, should reach emery wheel circumferential speed 25~30m/s also is very difficult, because grinding rate is low, round grinding efficiency is low outside be being compared because of grinding of the circle inside this. (3) the diametical dimension of emery wheel axis is lesser, and dangerous extend longer, tigidity is poor, when grinding incidental bend and oscillatory, affect treatment precision and exterior surface roughness thereby. Round grinding precision can amount to IT8~IT6 inside, ra value can amount to exterior surface roughness 0. 8~0.
2 μ M. (4) cutting fluid enters grinding area not easily, grind bits to eliminate relatively outside round grinding is difficult. Although inside round grinding is compared outside condition of round grinding treatment is poor, but the means that remains a kind of commonly used finish machining aperture. Special apply to temper by dipping in water strong opening, intermittent exterior aperture (the aperture that takes keyway or spline chamfer) with length shorter accurate Kong Jia is versed in. Grind aperture to be able to assure the dimension precision of aperture itself and exterior quality not only, return the linearity of the positional precision that can increase opening and axes; With same emery wheel, can grinding is different diametical aperture, flexibility is big. Inside round grinding is OK grinding cylinder aperture (aperture of aperture of via, blind, a flight of stairs) , end panel of conic Kong Jikong. 3.
Common inside round grinder pursues 3 for common inside round grinder outline drawing. It is main by lathe bed 1, workbench 2, the head is worn 3, emery wheel is worn 4 with saddle 5 wait for composition. When grinding, of emery wheel axis rotate give priority to motion, head wearing drives workpiece whirligig to move for circumferential feed, workbench drives head wearing to complete fore-and-aft feed exercise, the transverse shift that transverse feed moves to wear edge saddle by emery wheel will come true. When grinding taper hole, need to had turned head wearing corresponding angle. 1, lathe bed 2, workbench 3, the head is worn 4, emery wheel is worn 5, saddle pursues 3 common inside round grinding machine is average inside another kind of form of round grinder wears installation to make fore-and-aft feed move in workbench go to work for emery wheel. CNC Milling
CNC Machining