CNC Machining center reachs his to machine

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Of machining center choose with installation one. Of machining center choose 1. Be decided by the make choice of of treatment object before object of choose and buy, want to prepare the object of treatment clearly above all. Generally speaking: The part that has following characteristic suits to machine in machining center: . Multitask foreword intensive workpiece shows on a workpiece need is used a lot of have cutting tool machining. . The workpiece with trival fixed position has the poriferous treatment that precision of pitch of one fixed position asks for example, use the characteristic with tall precision of machine tool fixed position, very convenient carry out. . The work that duplicates type of production suits to machine sheet small lot production. Small lot points to in 1-100, capacity of every lot number is not much, but need to repeat production again. Additional, although workpiece appearance measurement is different, but it is similar work, realize group of treatment easily (GT) the spare parts of craft. . The complex form workpiece such as spare parts of the part pattern of complex form, aviation, can have the aid of machines all sorts of abnormity spare partses on machining center from technology of traverse foreword staff. . Casing kind, board kind the spare parts uses circumgyrate workbench on horizontal machining center, undertake to casing spare parts much face is machined, wait like cylinder body of body of main shaft casing, pump housing, a powerful person, internal-combustion engine. If connect end face to also want to install the treatment in clip, can choose pentahedral machining center. Vertical machining center suits to machine box to build crock of lid, planar cam to wait. Machining center uses dragon door at machining large casing, board kind spare parts, like pillar of diesel locomotive cylinder body, machining center, lathe bed, presswork wallboard machine. 2. The make choice of of machine tool norms machines the size dimensions of workpiece according to what decide, the workbench measure that requires a machine tool certainly accordingly and the route that 3 linear coordinate tie. Workbench dimension should make sure workpiece is above its the can great work that hold clip, treatment dimension must be inside each coordinate journey, in addition the limitation that considers the space that change a knife and area of each coordinate interference even. 3. The precision classification of the machining center of make choice of of machine tool precision is common model with nicety model, its are main precision project sees next tables: Precision project is average model (Mm) nicety (Mm) ± of precision of linear fixed position 0.

± of 01/ whole journey 0.

005/ whole journey repeats ± of fixed position precision 0.

006 ± 0.

002 mill round precision 0.

03-0.

040.

015   user asks according to the treatment precision of workpiece, choose the machine tool of corresponding accuracy class, the part that batch produces, 1 the precision numerical value that effective treatment gives may be fixed position precision.

5-2 times. Common model machine tool batch processes work of 8 class precision, accurate machine tool machines precision to be able to amount to 5-6 class, but should have the craft requirement such as constant temperature, so nicety machine tool is used strict, the price is high. 4. The production manufacturer of the machining center of make choice of of knife library capacity is right same kind of machine tool of norms, set 2-3 to plant normally library of distinct size knife, for example capacity of library of knife of horizontal machining center has 30, 60, 80 etc, vertical machining center has 16, 24, the knife library of 32 capacities. The user is when make choice of, can decide according to be being analysed by the craft of treatment workpiece place requires an amount as a result, install the place in clip in order to need a part to need cutting tool number to determine the size of knife library in normally, because change another spare parts to add man-hour, need reorder cutting tool, otherwise cutting tool management is intricate make mistake easily. From the point of statistical data vertical machining center chooses the knife library that 20 knives control, the knife library that horizontal machining center chooses 40 knives to control is advisable. Want to decide finally according to real need of course. With Yu Rou the gender creates unit (FMC) or flexible production system (FMS) machining center machine tool, capacity of its knife library should choose library of high capacity knife, configure exchangeable knife library even. 5. When the machine tool chooses the machine tool of machining center of make choice of of make choice of of function and accessory, mix besides basic function basic beyond, still have the function that provides an user to ask to choose according to oneself and attachment, say to choose accessory of function, choice (optional accessory) . As the development of numerical control technology, the content that can offer an alternative is increasing, the proportion that its make the price be occupied in the place in lead plane is larger and larger also, so ambiguous purpose chooses accessory in great quantities also is wasteful, alleged " precautions averts perils " the guiding ideology that order is wasteful essentially. Because this is chosen,should analyse in the round, consider long-term factor appropriately even. Choice function is main to numerical control system character, not much to the sort of price increment, but the function that brings a lot of convenience to using, should configure appropriately a bit more all ready, and it is OK to be opposite the accessory with much stage public machine tool, can consider one machine multi-purpose, but must considering interface is general. 6. Treatment metre and basis of estimation of number of machine tool stage already the workpiece of make choice of, analyse craft course next, the working procedure that preparation machines on machining center is singled out in this craft course, make man-hour metre estimation to these working procedure. Use craft parameter according to showing, estimation the cutting time of every working procedure, and those who assist time to take cutting time normally 10% , 20% . Additional medium or small of machining center change knife time to need 10-20 second about every time, so only floor-to-floor time is: =t of T single order is cut + T complementary + (10-20s) =t is cut + (10%-20% ) T is cut + (10-20s)   had only floor-to-floor time to give year of yield with respect to not difficult computation. A year 300 weekday, rate of machine tool actuate presses 75%-85% computation, if target of short of of computational result crop is worth, but parameter of about the same, modification craft; If far apart, lv of take an examination increases machine tool stage to count configuration. 2. Of the installation machining center of machining center debug with check and accept one. The debugs a machine tool purpose of machining center is assessment machine tool installation is firm, each drive, operate, whether is the system such as control mixed normally acute and reliable. Debug try moving job to undertake according to the following measure: . The demand that presses a manual gives lubricant dot is cheered, enter the hydraulic pressure oil accord with the requirement to fill of hydraulic pressure gasoline tank, receive a gas source. . Electrify, each component parts power supply or each component after electrify experiments, again overall power supply. Observe each component has without call the police, it is normal that the hand moves each component to observe, each security apparatus is effective. Although each link of the machine tool can be operated,rise with motion. . Form a vesicle, the machine tool is preliminary after movement, the geometrical precision of coarse adjustment machine tool, adjust a course to tear open the relative position of the main movement component of outfit and lead plane. Seek library of manipulator, knife, pallet changer, seat to waiting. After these jobs had been done, can use the foundation bolt of dead lead plane of quick-hardening cement fill and each accessory, make the same score fill of aperture of obligate of each foundation bolt. . Debug, prepare all sorts of detecting tool, if square chi of accurate gradienter, standard, parallel just is in charge of,wait. . Essence of life moves the standard of the machine tool, make the geometrical precision of the machine tool reachs the range that permits an error inside, use many bits of mat to prop up, move lathe bed into the level below free condition, assure the stability after lathe bed is adjusted. . Move control type to adjust manipulator with the hand relative to the position at main shaft, use adjust heart club. When installing knife handle of the greatest weight, want to have the knife library automatic trade to main shaft position for many times, accomplish accurate without by accident, do not bump. . Move workbench to exchange the position, adjust the relative position of tray station and pallet changer, achieve workbench to exchange a movement automatically smooth, install workbench the biggest load, undertake for many times commutative. . Whether do system of examination numerical control and the set parameter that can invent device of Cheng controller PLC accord with the formulary data in random data, experiment to basically operate function, safety precaution each next, , the executive circumstance of commonly used instruction. . Inspect the working condition of accessory, all sorts of the illume that is like a machine tool, cooling shield, fender. Installation of a machining center is debugged after ending, because its function is various, after installation, can pass below certain load long move automatically, the more comprehensive function that checks a machine tool is all ready with stability. The time that run can move 8 hours continuously everyday 2 arrive 3 days or every 24 hours move continuously 1 to 2 days. Move continuously can apply check engine order. 2. Of machining center check and accept machining center checking and accept is detect complexly the technique works. The plane that it includes pair of machine tools, report, fluid, integral performance that enrages departmental cent detects reach a machine tool of static, dynamic precision detect. There is special orgnaization in our country, namely quality of product of national machine tool detects center. The test stop work for the day of the user is made but the check debit law of this orgnaization undertakes according to, also can ask afore-mentioned orgnaizations to undertake checking and accept. Basically center in two respects: 1. The geometrical precision of machining center of examination of precision of machining center geometry is error of appearance of the geometry after assembling, its check content to be as follows: . The flatness of workbench. The mutual verticality with each coordinate mobile direction. X axis direction moves the parallelism of year old of workbench face. Y axis direction moves the parallelism of year old of workbench face. Shift of X axis direction is right parallelism of lateral of workbench fluctuation chamfer. The axial change of main shaft is moved. The radial of main shaft aperture is jumpy. Shift of direction of coordinate of Z of edge of main shaft box is right the parallelism of line of main shaft axes. String of axes of main shaft circumgyrate is right the verticality of workbench face. The linearity that main shaft box moves in Z coordinate direction detects commonly usedly the tool has: Accurate gradienter, square, accurate square box, smooth feet, collimator, dial gauge or measure heart of main shaft of small appearance, high accuracy the dial gauge pole with club and good tigidity. Every geometry precision undertakes detecting according to the checks and accept a condition regulation of machining center. Attention: Detect the geometrical precision that the grade of the tool must measure than place is tall first-class class. In the meantime, undertake below the state that there must be warm-up a bit in the machine tool, after machine tool electrify, after main shaft presses circumgyrate of medium rotate speed 15 minutes, reentry examines all right. 2. Machine tool function checks and accept a basis " general principles of standard of experiment of metallic cutting machine tool " test project of the regulation is as follows: Heat of vibration of dependability sky movement is out of shape static stiffness is fought brace up sexual cutting noise is stimulated brace up precision of circumgyrate of main shaft of fixed position precision moves point-blank   of precision of inhomogenous sex treatment does overall performance to experiment to the machine tool must the testing instrument of high accuracy. When particular machine tool is checked and accept, each check and accept content to be able to allow to undertake with occupation standard according to machine tool emblem mark. Machining center operates a point to regard a skilled operation as personnel, after course of the requirement that must machine a spare parts in understanding, craft, machine tool is characteristic, fang Kecao vertical machine tool finishs each treatment job. Accordingly, arrange point of a few operations to offer reference: . Locate to simplify with how, the relative to machining center treatment of face of every fixed position of clamping apparatus origin, due and exact coordinate size. . The workpiece coordinate department of make choice of of the place in installing azimuth and process designing to assure a spare parts and machine tool coordinate fasten directional consistency, reach directional installation. . Can via short time disassemble, change to suit the clamping apparatus of new work. Because the auxiliary time of machining center has been compressed very shortly, of clamping apparatus of form a complete set assemble and unassemble cannot take up too much time. . Clamping apparatus should be had as far as possible little element and taller stiffness. . Clamping apparatus wants to be opened wide as far as possible, the dimensional position of clamping unit can be small low, clamping device cannot produce interference with contrail of labor situation cutting tool. . Assure to make the treatment content of workpiece is finished entirely inside the journey limits in main shaft. . The machining center of alternant to having workbench, the shift as a result of workbench, on hold in the palm, next holding in the palm and rotate wait for a movement, clamping apparatus design must prevent the dimensional interference of clamping apparatus and machine tool. . Finish all treatment content in holding clip as far as possible. When must change when clamp is nodded, want special attention to clamp is nodded and cannot destroy fixed position precision because of changing, explain in craft file when necessary. . The contact of clamping apparatus underside and workbench, the underside flatness of clamping apparatus must assure to be in 0.

01, 0.

02mm less than, exterior surface roughness is not more than Ra3.

2um. The use of the machining center of manufacturing management technology of machining center is a complex technical project that has certain dimensions. It involves manufacturing management, technology management, talent to groom wait for a series of jobs. Each work to answer the principle with certain act on moves. This principle fills those who distribute benefit of play machining center to assure a system namely. Accordingly, taking use technology seriously is on one hand, taking administrative technique seriously is indispensable on the other hand. Our country already served as machining center in mechanical manufactory each efficient automation equips, regard a key as equipment. But uneven however on equipment management. On the management of machining center, what the manufacturing characteristic that must promote machining center and it needs the manufacturing metre of assorted each link. Cannot move the administrative method of general accuracy machine tool to go up to numerical control machine tool, the following should notice on management: . All function that develops a machine tool adequately is used in machine tool investment when, all function that has to develop a machine tool adequately, should must read operation instruction handbook seriously, understand all sorts of functions of the machine tool and its ability deeply. Machine the property of the spare parts according to this factory, the object that reasonable arrangement machines, working procedure, the form a complete set with corresponding choice with accessory. Right fragile an arrangement nice spare parts. . Workshop section of setting numerical control centers numerical control machine tool in a special section, engineering technology preparation, manufacturing management preparation is united by factory Technical Division undertake. Manufacturing workshop sets technical technical staff. Avoid machine tool of only station numerical control to be in dispersedly a workshop, machine a few crucial parts only, create the situation with mass-produced unused time. Set special workshop section, the management of facilitating maintenance. . When cycle of preparation of metre of reasonable arrangement production, technology is arranging manufacturing job to machining center, should first on deck of card of working procedure of the craft file craft branch, treatment, tool, send treatment the part to treatment again locally. Lest handlers stops machine go seeking tool, modification order, assemble clamping apparatus and build growing time to stop machine. . If the regulations system with right choice is system of management of numerical control machine tool, safe machine tool of use regulation of machine tool of operating rules, numerical control, numerical control maintains, the system that order check. In the meantime, should seasonable to make and design sectional feedback information. . The construction that takes technical team seriously includes the complex facility of a variety of technology achievement to, grasp use need completely a well-trained technical team, include maintenance of craft, operation, Electromechanical to wait, the education of personnel should have a process, the branch of leadership management equipment should have comprehensive knowledge to this. In the uses in much breed small lot production process of tool clamping apparatus, the installation of workpiece, disassemble and clean, the automatic exchange of splint, eduction that cuts bits happening often in whole production process. To improve the treatment efficiency of machining center, do on treatment facilities high speed is changed and high-powered changing is on one hand, shorten installation time, fall low consumption is another important facet. Clamping apparatus is for the manufactory attribute tool part, it is the necessary step that assures a spare parts to be machined exact location, effectively. To machining center, precision of fixed position of requirement clamping apparatus is tall, , assemble and unassemble convenient, comfortable mix at rough machining, finish machining all sorts of multitask foreword are compound the form of treatment. The use of domestic machining center still is in primary level, clamping apparatus design uses manual design means is more, of stock CAD/CAM system less. The use kind that clip fixed position holds commonly with respect to machining center only below makes one introduction: 1. Machining center treatment locates fiducial choice is before certain technology program, choose location reasonably fiducial the treatment precision to assuring machining center, the applied efficiency that improves machining center is having conclusive sense. Should consider to be versed in individually in the round when option fixed position is standard treatment circumstance, achieve below 3 purposes: . Place choosing is fiducial should make sure work location is exact, assemble and unassemble convenient, rapid, clamp is reliable, and clamping apparatus structure is simple. . Of place make choice of fiducial as simple as each dimension computation that machine place. . Make sure each machine precision. 2. Certain part clamping apparatus is on machining center, the task of clamping apparatus is clamp workpiece not only, and it is reference with the fixed position face of each direction even fiducial, decide the origin of workpiece process designing. The Gao Rou sex of machining center asks its clamping apparatus is more compact than structure of general accuracy machine tool, simple, clamp movement is rapidder, accurate, reduce auxiliary time as far as possible. On treatment machine tool, want to add up to behoove to use good clamping apparatus, should have to the treatment characteristic of machining center above all understand and master deeplier, size of the precision that considers to machine a spare parts even at the same time, lot, production cycle and production cost. According to characteristic of machining center machine tool and treatment need, at present commonly used clamping apparatus type has special fixture, built up fixture, adjustable clamping apparatus and into group clamping apparatus. General choice is odd orderly a production is medium wait for general clamping apparatus with bolt of vice, pressing plate as far as possible, when batch is produced first consideration built up fixture, consider next adjustable clamping apparatus, choose finally special fixture and into group clamping apparatus. Want to consider all sorts of factors integratedly when the choice, choose most of economy, the most reasonable clamping apparatus form. 3. Design of machining center clamping apparatus reachs the issue that the attention answers when assembling. Locate to simplify with how, the relative to machining center treatment of face of every fixed position of clamping apparatus origin, due and exact coordinate size. . The workpiece coordinate department of make choice of of the place in installing azimuth and process designing to assure a spare parts and machine tool coordinate fasten directional consistency, reach directional installation. . Can via short time disassemble, change to suit the clamping apparatus of new work. What had compressed as a result of the auxiliary time of machining center is very short, of clamping apparatus of form a complete set assemble and unassemble cannot take up too much time. . Clamping apparatus should be had as far as possible little element and taller stiffness. . Clamping apparatus wants to be opened wide as far as possible, the dimensional position of clamping unit can be small low, clamping device cannot produce interference with contrail of labor situation cutting tool. . Assure to make the treatment content of workpiece is finished entirely inside the journey limits in main shaft. . The machining center of alternant to having workbench, the shift as a result of workbench, on hold in the palm, next holding in the palm and rotate wait for a movement, clamping apparatus design must prevent the dimensional interference of clamping apparatus and machine tool. . Finish all treatment content in holding clip as far as possible. When must change when clamp is nodded, want special attention to clamp is nodded and cannot destroy fixed position precision because of changing, explain in craft file when necessary. . The contact of clamping apparatus underside and workbench, the underside flatness of clamping apparatus must assure to be in 0.

01, 0.

02mm less than, exterior surface roughness is not more than Ra3.

2um. CNC Milling CNC Machining