The influencing factor analysis that is based on numerical control lathe to machine precision and answer politic make a thorough inquiry

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Numerical control lathe regards a kind of advanced treatment as equipment, enormous economic benefits and social benefit can be brought in applying actually. In treatment of numerical control lathe, very crucial to the precision control of product quality, especially the application of automation technology, than traditional processing technique character dominant position is relatively prominent, to the numerical control lathe of new period treatment precision raised new requirement. In treatment of numerical control lathe, process designing precision, servo precision and interpolation precision concern treatment essence to allow to spend directly. In addition, numerical control lathe is in manufacturing treatment, still can get environment, produce the effect that waits for a variety of elements with material, if lathe construction deviation cannot gain effective control, will immediate impact machines quality and precision to the spare parts, still remain to be perfected further. 1, the lathe of working principle numerical control of numerical control lathe regards unifinication of a kind of Electromechanical as the product, numerous modern technology assembled in applying actually, conduce to promotion machining manufacturing efficiency and essence to allow to spend. Common lathe is in spare parts treatment, handlers needs to combine construction blueprint to change workpiece motion contrail, new period raised taller requirement to the treatment of workpiece. In spare parts of treatment of numerical control lathe, need holds craft parameter and treatment flow adequately, through numerical control language the work out machines flow, issue a statement to servo, the automation that implements component is machined and make. 2, in the process of treatment of lathe of influencing factor numerical control of precision of treatment of numerical control lathe, influencing factor is relatively diversiform, and servo control method and precision discretion, will affect numerical control lathe to machine precision greatly, for follow-up spare parts treatment buries next safe hidden trouble. With respect to numerical control lathe treatment precision looks, influencing factor basically includes the following fields: Error of ① lathe geometry; Error of parameter of geometry of ② lathe tool; ③ lathe heat is out of shape error; Error of system of ④ servo feed; ⑤ cutting tool wears away error. With respect to these lathes treatment precision influencing factor looks, error of parameter of geometry of lathe tool of sum of errors of servo feed system is common element, the treatment quality of the component is being affected on certain level. In the treatment of numerical control lathe of current our country, advocate if pass guide screw of ball of drive of servo electric machinery to control,machine the position, and the transmission error of ball guide screw, it is one of main factors that affect precision of fixed position of numerical control lathe. Review the current situation of numerical control lathe of current our country, basically be with closed-loop control the system is given priority to. In real operation, if guide screw of servo electric machinery opposes directional motion, can affect a spare parts to machine precision not only, because interstitial occurrence brings about idling of numerical control lathe,still meet, and this kind of error avoids very hard [3] . Get the influence of outside active force, athletic component may appear flexibility is out of shape phenomenon, the serious degree of problem of error of lathe of aggravate numerical control, cannot control numerical control lathe effectively to machine essence of life to allow to spend. Numerical control lathe is in spare parts treatment, lathe tool comes in the athletic contrail that sets beforehand cut part. As a result of lathe tool slant horn and circular arc radius, certain dimension deviation can appear when machining a spare parts, and quantity of axial size variation increases as the addition of circular arc radius. So, in spare parts treatment, the change of axial displacement length depends on the adjustment of axial dimension. In the spare parts treatment of numerical control lathe, need dimension of integration analysis axial and displacement length, optimize a work out to machine flow. Those who need an attention is, point of a knife is apart from, circular arc radius and spare parts center are advanced parameter, will immediate impact machines essence of life to allow to spend to the spare parts, and the service life of numerical control lathe depends on likewise the assurance of these pair of parameter, its importance is self-evident. 3, the significant step 　 that promotes numerical control lathe treatment precision (1) the overall design that optimizes numerical control lathe is in numerical control lathe is overall in the design, should choose sound manufacturing strategy according to actual condition, lathe of promotion numerical control makes efficiency and essence allow to spend. From lathe of numerical control of current our country production company grows the current situation to look, basically be to pass proper motion to design lead plane structure, crucial functional part is bought outside, can promote treatment quality not only so, still can reduce finished cost effectively. Meanwhile, numerical control lathe needs to assure to be out of shape stress equal apportionment arrives on every component in overall design, can avoid component of occurrence stiffness weakness so, improve lathe to be out of shape problem.

. To the adjustment of centre of gravity of structure of numerical control lathe, can reduce height of centre of gravity appropriately according to effective demand, affecting numerical control while lathe produces quality, still can increase place frequency of movable mould condition. In assure structural stiffness foundation to go up, reduce structural material dosage as far as possible, dominate machine tool focus effectively. Machine precision to can promote numerical control effectively lathe, optimize a design through heating up voice character to main shaft system, conduce to the blemish in improving conventional technology and inadequacy, system of promotion main shaft designs rationality, improve appearance of main shaft drift as far as possible, the error control is inside reasonable range. (2) machine tool of numerical control of precision of geometry of promotion lathe slideway is being made in, should optimize further to precision of geometry of lathe bed slideway, clear high accuracy develops a target, optimize lathe body base and slideway structure design. To lathe of complete function numerical control, can choose form of inclined lathe bed to undertake designing, pass enclosed canister shape structure, can reduce so self-prossessed, optimize workmanship. Adopt canister shape structure, make numerical control machine tool be below cutting bear, promote lathe bed bending strength and stiffness, obtain considerable geometrical energy to allow to spend. Normally the circumstance falls, need considers floating rate integratedly, choose the slideway with laden stronger capability as far as possible, optimize numerical control lathe to machine craft. In addition, below condition of cutting of high load capacity, promote numerical control lathe precision, can choose deputy structure of the sliding slideway that set steel according to actual condition. With bolt the material that note model installation is on steel slideway, conduce to the space that improves steel slideway and base slideway, optimize the blemish in craft and inadequacy, promotion slideway machines precision, for follow-up treatment quality provides solid safeguard. (3) compensation method of error of error compensation method compensates a method as a kind of effective system, can be control of machining error of spare parts of numerical control lathe inside reasonable range, through the error compensation promotes treatment precision. Adopt modern technology, reducing numerical control while lathe processes error, return the part that can acquire high quality and high accuracy. Use lathe of numerical control of servo of half closed circuit, be affected by retrorse deviation, lathe repeats error of fixed position precision to get be controllinged effectively hard, affect the precision that machines a spare parts and quality. Be based on this, adopt error compensation method, can be control of spare parts machining error inside reasonable range, realize the effective compensation of pair of spare parts machining error. In light of error of fixed position of lathe of current numerical control, great majority maintains in 0.

02 Mm left and right sides, do not have compensation function, hardware of correspondence of have the aid of and software, realize the exact location of the tool, eliminate the gap that exists among them as far as possible. Affecting low speed of numerical control lathe one-way fixed position while, effective logarithm accuses lathe interpolation to machine. And in this process, to retrorse problem, the interpolation on the foundation that can be worth in affirmatory clearance is handled, will satisfy a spare parts to machine need with this. To other numerical control lathe, can pass inside buy many addresses, use at the memory of data, realize an axis to backlash stores and be compensated. Change way of lathe axis movement, can get backlash value, compensate coordinate displacement effectively, deviation control is inside reasonable range, promotion workpiece machines precision, for follow-up treatment the activity lays next solid foundations. (4) the error prevents law error to avoid a law is a kind of effective preventive, be not the processing that is pair of errors, avoid the occurrence of the error however through precaution, or it is its control is inside reasonable range. Pass pair of machine tools optimize a design, the error problem that integration analysis may appear, it is error control as far as possible inside reasonable range. Such as, will promote the treatment of lathe component precision according to machining need, optimize further to having lathe structure, for follow-up spare parts treatment precision and stiffness provide support. In addition, still can control effectively to machining an environment, optimize treatment craft. But those who need an attention is, the error prevents a law to be put in certain blemish and inadequacy likewise, exorbitant promotes numerical control lathe precision, can affect product quality not only, still can raise finished cost, those who go against an enterprise is long-term live and develop. 4, the place on conclusion put together is narrated, numerical control lathe is in manufacturing treatment, still can get environment, make and a variety of element influences such as material, if fail to control lathe construction deviation effectively, the influence the spare parts machines quality. Accordingly, need chooses reasonable range, optimize further to having technology, improve the blemish that exists among them and inadequacy, lathe of promotion numerical control machines precision. CNC Milling