Transverse feed precision ensures lathe the research of the orgnaization

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  • source:ASEM CNC Machining
Summary: Discussed lathe the problem that transverse feed system exists, the design gives precision of a kind of new-style and transverse feed to ensure an orgnaization, economy is practical, improved manufacturing efficiency and product quality. Transverse feed system is in CA6140 lathe in successive use process, because wear away,wait for a reason, make guide screw and filar mother gap too big, generation axial change is moved, affect feed precision. Can eliminate the gap between guide screw and filar mother through adjusting, but carry out a proof, this kind adjusts what the method removed filar parent only to wear away clearance, and wear away without what eliminate guide screw clearance. If press guide screw to wear away,larger position adjusts filar mother, wear away in guide screw minor place may pass because of clearance small and make feed handle roll too heavy. Through long-term observation and practice, discovery almost all machine tools are existing greatly the problem that feed orgnaization precision drops badly because of wearing away. The transverse feed orgnaization of common lathe is used because of its frequent and bear very great cutting power, so, wear away degree relatively other machine tool is serious, if can solve the feed precision problem of lathe effectively,similar to other orgnaization has direct sense. Come a few years, domestic and international lathe uses afore-mentioned traditional structure all the time, handlers often must undertake adjustment in use process, include one class to maintain this work content. Accordingly, increased labor strength of the worker, lowered the utilization rate of equipment, although also cannot assure the precision of equipment well so. 1 common improve plan and existence problem to be aimed at common lathe domestic and international expert uses the feed precision issue of transverse feed orgnaization more with below 3 kinds of solutions. Be in in repair or in building a course, change parent of new transverse feed silk. When necessary, have repair to transverse feed guide screw, match filar mother again next, this kind of method is done not have from go up at all solve problem of precision of transverse fixed position. The machine tool is first after repair phase can ensure transverse feed precision only, hind of a few months adjusts level repeatedly into the person.

And increased maintenance cost. Some experts try to use improve bearing of transverse feed guide screw structure or reduce method of guide screw metabolic to solve a problem. This kind of plan raised the stiffness of guide screw only, although can of guide screw of indirect ground slow down and filar mother wear away, but still do not have from solve a problem essentially. The defect of this kind of method is transformed cost and upkeep costs very big. 80 time metaphase, as the progress of electronic technology and development, domestic and international experts use numerical control in succession or number shows a technology to undertake transforming to the machine tool. Use numerical control technology to improve precision of orgnaization of machine tool feed, use closed-loop control especially, solved feed precision problem well. But cost of this kind of technical reformation is too high, average company cannot stand. The example that uses number to show a technology to improve precision of machine tool feed is compared in home much, although this is planted,plan invests than numerical control technical reformation small, but considering investment income ratio, the equipment with this kind of inferior cost transforms bed of unwell also be open to traffic adding up to general, average company uses this technology at essence of life, big, rare equipment only transform, the commonnest is hundred thousands of yuan boring milling machine transforms cost. 1.

Adjust bolt 2.

Lining 3.

Procrastinate in board 4.

Guide screw 5.

Spacer 6.

Nut 7.

Bedspring 8.

Round pillar runs from opposite directions the structural principle of orgnaization of safeguard of 2 new-style precision passes filar mother attached drawing to dog for years domestic and international machine tool is transformed trends and repeatedly experimental research, the orgnaization of mother of guide screw silk that the design succeeds to because wear away,a kind of trends in can using a process is eliminated automatically and produce gap, not only can compensate guide screw and filar mother at the same time wear away, because guide screw curves the influence of generation,still can eliminate, its make Cheng Mu and former orgnaization comparative, the goal of maintenance-free was achieved in use process, solved the problem that ensures transverse feed precision is stable successfully. If attached drawing place is shown,precision of new-style and transverse feed ensures the construction of the orgnaization, its principle is: In in procrastinate board the double silk mother with 3 original admiral is torn open below, in using milling machine to be in, procrastinate board the positional boring that goes up to be shown by plan institute gives opening of an a flight of stairs, again lining 2 mount, round pillar runs from opposite directions filar mother 8 can turn inside lining and move up and down, adjust nut 6 with bolt 1, can change spring the pressure of 7, make run from opposite directions nut clips guide screw closely 4, eliminate the gap of the because of wearing away generation between mother of guide screw, silk thereby. Be in when mother of guide screw, silk wear away larger position besides when closing, cylindrical run from opposite directions filar mother 8 fall in the action of bedspring force, move to direction of line of guide screw center at the same time inside lining, achieve the goal that eliminates gap thereby. If filar mother moves to wear away to guide screw,minor place is in, run from opposite directions form silk mother is stretched inside lining with respect to the effect way that goes against bedspring force a few, make mother of guide screw, silk cooperates locomotive freely. Another action of this kind of structure bends when guide screw namely when, can make filar mother makes fluctuation shift or roll eliminate knife error inside lining. The effect that trends adjusts is achieved in passing transformed lathe to be used in practice, the transverse feed precision that holds spic to decide in moving middleman and guarantor of several years achieves the goal of maintenance-free. The orgnaization of safeguard of precision of new-style and transverse feed that article place devises 3 application example ever was in some city machinery plant of company of auto industry group is used, rise from 95 years up to now, basically be in maintenance-free condition, be used daily and one class maintains need not be adjusted. In big batch production, when needing to machine the spare parts of round dimension outside differring especially, it has very tall repetition fixed position precision, the error does not exceed 0.

01mm. Accordingly, shortened fixed position repeats to be opposite in every working procedure knife time, improved manufacturing efficiency and product quality significantly. In recent years, same technical reformation undertakes on other lathe, also obtained favorable result. CNC Milling