Brief introduction the nap of emery wheel circular arc that can be used one kind at nap of circular arc of channel of form of large bearing peach implement structure and working principle. Introduce drive of crock of two-way hydraulic pressure, use double spacing of machinery and electric equipment at the same time, mix in order to make sure emery wheel is the safety of circular arc nap, accurate efficient. Groove of the outer lane inside large bearing uses grinding of emery wheel of numerical control figuration to machine is the very effective technique that raises manufacturing efficiency and treatment precision. In the grinding treatment process that encircles groove in bearing inside and outside, the circular arc nap of figuration emery wheel is a crucial problem that must solve, at this moment nap of emery wheel circular arc implement practical and convenient the gender appears particularly important. Regard P2 and grinding of P4 class bearing as the master of treatment, vertical of numerical control of MGK28 series high accuracy is all-purpose grinder can undertake according to the client's need its differ equipment satisfaction nap of emery wheel circular arc implement. The vertical of numerical control of MGK2835O high accuracy that institute of some bearing plant orders 1 design setting is all-purpose grinder (by Beijing An Yu becomes production of limited company of numerical control machine tool to make greatly) the inside and outside of large bearing encircles need grinding peach form channel, the geometrical figure that needs to process work according to place and exterior precision ask, choose right emery wheel and undertake circular arc nap to its, undertake to workpiece grinding is machined again next, in order to achieve the quality requirement of workpiece. Nap of circular arc of an emery wheel was designed on this foundation implement. 2 jobs principle nap of circular arc of this emery wheel implement structure, it by nap implement base 1, rotate bracket 2, Zun Ding is pointed 3, base of King Kong pen 4, King Kong pen 5, right tip 6, lever of piston of hydraulic pressure crock 7, secter pat 8, without contact switch 9 with mechanical spacing lever 10 wait for main part etc to assist. Nap implement the Jian Zhiliang structure that uses two end to prop up, nap implement 1 two end adopt base accurate bearing is being propped up rotate bracket 2. Nib of King Kong of need of nap of emery wheel circular arc does divide evenly at emery wheel relatively fast circumferential swing, drive of crock of two-way hydraulic pressure is introduced in this design, with bail firm pen swing even, smooth. In nap implement base 1 on have crock of one hydraulic pressure, by drive of crock of two-way hydraulic pressure, pass rack (gear of 7) of lever of piston of hydraulic pressure crock (fixed in right tip 6 on) whirligig of translate into of will sharp movement, drive thereby rotate bracket 2 do those who have the law to swing back and forth. And fixed rotating bracket the 2 King Kong that go up pen 5 also circling some beforehand what the centre of a circle of set does sex of move back and forth is circumferential swing. Through adjusting electric equipment and hydraulic pressure component and CNC Machining programme controll, can make emery wheel nap gives the circular arc that wants. The position of King Kong pen, can rotating through installation bracket the 4 whorl that go up come to the base of 2 King Kong pen that go up around adjustment. The distance of center of emery wheel of distance of King Kong nib (be duped to be repaired on emery wheel in horizontal when) A- R is when convex arc, the A+R when sunken circular arc is repaired on emery wheel. Among them circular arc nap implement central distance is A, go to those who control a center to connect the distance of the line in center of the emery wheel on horizontal namely, what want the R of circular arc radius of nap. This nap implement basically use at the peach form channel that large bearing inside and outside encircles nap, for convex arc. The nap of sunken circular arc adjusts do not do expatiatory. When nap protruding circular arc, the adjustment of position of King Kong pen but arbor of tool of have the aid of (with or so tip 3 and 6 fixed) so that can make King Kong pen easier,adjust exacter position. Decide snail clench through tightening, in order to make King Kong pen is secured, ensure accurate, safe, effective. Of King Kong pen swing to rotate namely bracket of 2 swing to be restricted jointly by mechanical spacing and electric equipment spacing, ensure its swing the accuracy of angle and effectiveness. Among them, mechanical spacing adjusts of 10 up and down through mechanical spacing lever will restrict secter pat of 8 swing limits, control thereby rotate bracket 2 swing the position and spacing of limits; electric equipment are used without contact switch 9 as sensor component, undertake controlling by numerical control system. Rotate the swings back and forth speed of 2 mixes bracket direction is controlled by group of hydraulic pressure a powerful person, so that can make,rotate bracket 2 get wobbly suitably speed and direction. Among them group of hydraulic pressure a powerful person is comprised by the hydraulic pressure a powerful person such as pressure-relief valve, flow control valve and directional a powerful person. Nap of emery wheel circular arc implement hydraulic pressure controls working principle. Gasoline tank 1 in provide pressure oily source for hydraulic pressure system by hydraulic pump of electric machinery drive, adjust via using type overflow a powerful person continuously, make pressure control is the system to be more than 0.
7MPa. When emery wheel undertakes circular arc nap, the direction that King Kong pen swings back and forth namely crock of two-way hydraulic pressure the athletic way of 3 pistons lever is the pen of; King Kong that through 2 4 direction a powerful person 4 control adjust wobbly speed speed is the discharge volume that carries oil path come pilot, can come true in order to be when circular arc nap thick overhaul the process that overhauls with essence of life. Among them thick repair the option that writes with essence of life to carry 2 3 direction a powerful person 4 control, thick the oil path when repairing passes 2 flow control valve 5, right now flow control is 0.
The oil path when 6L/min; essence is repaired passes 2 flow control valve 6, right now flow control is 0.
2L/min. At the same time thick the flow that builds the oil path when be being repaired with essence of life is OK according to effective treatment workpiece combines grinding craft to undertake corresponding adjustment, machine a requirement in order to satisfy the grinding of different workpiece. 3 operation method nap of circular arc of this emery wheel implement when be being used, make arbor of a tool according to what needing the dimension of the emery wheel circular arc of nap and precision (channel of this peach form needs prune Ø40mm × 320mm) , with left tip 3 with right tip two end secure 6 pairs of arbor, so that arbor of have the aid of is accurate the seat that ground adjustment gives King Kong pen point, satisfy nap need. According to grinding craft, write an appropriate grinding to process numerical control order. The basis machines need actually, adjust appropriately the position of mechanical spacing and component of electric equipment spacing, make King Kong pen gets angle; moves section flow control valve wobbly suitably, make King Kong pen gets wobbly suitably speed. Undertake pair of knives, the knife of arenaceous wheel pair before nap of emery wheel circular arc particularly crucial. Must make sure King Kong pen lies when horizontal position, king Kong nib is in stand lie the central line of width of wheelhead emery wheel (the place horizontal that is the tip of form of emery wheel peach that need nap gives namely) on, such ability make emery wheel nap gives accurate peach form channel. Undertake circular arc nap to emery wheel, earning circular arc needs circular arc for place namely. Undertake grinding to workpiece, detect the grinding quality of workpiece. 4 structures characteristic nap of circular arc of this emery wheel implement the structure is simple, control easily, and use convenient. Through adjusting King Kong pen around position, but the R of accurate circular arc that nap gives different radius, suitable scope is wide. Use double fulcrum to prop up, nap implement tigidity and stability are good. Use drive of crock of two-way hydraulic pressure, can make King Kong pen gets divide evenly fast, swing smoothly, the emery wheel circular arc that can assure nap gets taller precision and exterior surface roughness. Double spacing of use machinery and electric equipment, safe when assuring circular arc nap while, can effective decrease rotate bracket is done redundant and invalid swing.
Improve the efficiency of circular arc nap. 5 epilogue course designs research, nap of circular arc of this emery wheel implement devoted production. Use nap of circular arc of this emery wheel implement, after the vertical of numerical control of MGK28350 high accuracy that in Beijing An Yu becomes limited company of numerical control machine tool to make production greatly undertakes circular arc nap to emery wheel on all-purpose grinder, the peach form channel that encircles to large bearing inside and outside undertakes grinding. The workpiece after grinding is machined can achieve end panel jumpy ≤ 0.
Radial and 003mm, jumpy ≤ 0.
Surface roughness of O03mm, surface ≤ 0.
Of 2µm relatively high accuracy, achieved the goal of the design, better satisfaction the requirement of the user, won an user reputably. CNC Milling