Village cropland machinery is rolled out lade new model of the main shaft activity of exercise automation lathe

 Village cropland machinery developed main shaft activity lathe ” MV200 ” . Chuck dimension is diametical 250mm. Be 205mm with chuck diameter ” MV120 ” identical, although use model for the hand,its characteristic is, came true to carry work by main shaft chuck however. Need not make installing preform to wait to main shaft chuck lade exercise.

Because can tear open outfit workpiece from chuck of tendercy main shaft, accordingly, move type photograph to compare with the hand, operation error is less, tear open outfit time shorter also. Lathe makes preform is machined below the to load when machining in work staff, until take out already completed work till, the time that place of this a chain of movement spends is 3 seconds (this company is measured) . The automation that works through lading, rose average machinery of exercisable of personnel of every master course of study is counted.

When much stage MV200 arranges compositive product line, as a result of working procedure by artificial bearer, accordingly, satisfy the requirement that working procedure changes his costume or dress more easily. Additional, still but compose is built suit to undertake varietal and variable sheet manufacturing product line.

Respect of fast feed career, x/Z axis is 40m/ cent and 30m/ cent respectively. Can machine below standard circumstance most greatly the workpiece of long 100mm of diametical 200mm × . Turn except 10 horn servo besides the head, still installed auxiliary whorl to comb stage of knife cutting tool. Can deploy on stage of this cutting tool rotate cutting tool component, go burr component and grinder component, the concentration that realizes working procedure thereby is installed.

Reduce the time that change a knife considerably: The HSK outfit that is used at lathe and milling machine places a technology

Before long in the future the HSK technology of lathe will brand-new standardization. At present complete HSK outfit placed technical program to had formed detailed standard standard. HSK should be attributed to it to be spent in tall affection as cutting tool interface with tall tigidity rotate the complete success on cutting tool. At the same time this kind of interface is standardization, it and manufacturing business and industry have nothing to do. But so far interface of HSK cutting tool is in of stationary cutting tool introduce applied respect to return existence problem. The reason is to rotating for cutting tool, knife handle on the groove that goes up and tool carrier raised the public errand between does not have very big impact, it is so in the standard this public errand by set opposite bigger. However to securing cutting tool, the public errand of this raised device is having a very crucial conclusive effect however. If common difference is too big, its are met as a result different causes cutting height and cutting position special not accurate. The Che Xi of the lathe HSK-T standard in the future and Japan is compound treatment interface committee (ICTM) standard restricts public errand of this raised device the smallest, make need not want new change a knife to become a possibility quickly. The time that change a knife reduces HSK technology significantly rotating the application of the respect brought significant advantage. It is HSK technology makes the time that change a knife shortens apparently above all. So far, standard system changes a knife mediumly to need the 10 time that arrive 15 minutes about previously, and knife time is changed in providing the system from HSK interface by cut to be less than 30 seconds. Additionally the tall accuracy of HSK interface can allow the cutting tool with good presetting to apply directly, and do not need to undertake on the machine tool check perhaps is being amended sampling.

The knife clip that the plan differs 4 kinds 1 comprised Mapal company HSK to assemble the main element that places technical order

Graph the clamping force of 2 parts new clamping apparatus is double what provide a value in HSK-T standard

The is located in Aalen Mapal company that regards first production as one of business already research and development apply to one kind belt rotate the complete HSK outfit of the lathe of device and milling machine places technical order. This kind of technology had considered the HSK-T level in the future, and the very tall clamping force that can achieve place to need. If the graph shows 4 kinds of different knives 1 times,clip is the main element that this kind of new outfit places a technology, these component can be in the machine tool undertakes installing on the tool carrier that answers when the photograph to it. These 4 kinds of component although appearance version each are not identical, but they have a big axial channel. Pass the tool carrier of this kind of type and cutting tool, can optimize the method of cooling lubricating fluid on one hand, on the other hand the component of a few add functions also can be introduced. For instance this makes in the whirl that contains manual jig the installation on device has dynamic cutting tool to become a possibility, this clamping apparatus has huge clamping force. Sometimes this clamping force is the indispensible clamping force that sets in HSK-T standard even double (if pursue,2 show) . The treatment of top demand on precision and the treatment that begin from the aperture of the smallest diameter need to eliminate raised device common difference completely. To introduce this kind of treatment, mapal company offerred to be able to ensure rotate the system of the exact position of cutting, offers another option, protect this system and cutting tool security compositive together. When HSK tool carrier does not have clamp, cutting tool won’t slide from tool carrier in the machine tool. Reduce accident risk. Cutting tool got protective. The detailed introduction that HSK installs the detailed process that places a technology to introduce new Mapal tool carrier is as follows:

    A solid pincers offers flange of installation of front clamping apparatus strong link and huge stiffness. Clamping force is the formulary value in standard of an invariable far outclass. Changing a knife is to pass to be able to circle an axis to rotate more than 65 degrees installation bracket comes to those who finish help. What this appearance construction that installs bracket designs is very short. The stiffness with tall flange of installation of raised clamping apparatus and strong link pass a solid pincers portion in order to come true. Double what the clamping force of this clamping apparatus is achieved and the value provides in the standard more than. Changing a knife is to pass to be able to circle an axis to rotate the more than 50 degrees help that installs spanner will come true. Its appearance construction is long and thin form. Flange of installation of automatic clamping apparatus has this only under 50 cling to the clamping apparatus of hydraulic pressure force also can realize the regulation in prep above standard to be worth the clamping force of double. A small hydraulic pressure air cylinder is changed to receive installation to be at the back of HSK, need to change a knife through pressing a pushbutton to be able to be finished easily only. It is very compact that its construction is designed. Axial clamping apparatus installs this tool carrier that flange introduces and axial parallel. Changing a knife is to pass a turnbuckle from rear come true to the whirl of axial. The regulation that standard of clamping force far outclass is worth is worth, torque is very small however. Because contain the tool carrier of axial clamping apparatus,only the clamping apparatus of axial moves. So its wear away very small, and affection is spent quite tall.

How does process designing of numerical control lathe decide cutting dosage and feed

When process designing, process designing personnel must determine the cutting dosage of every working procedure. When choosing cutting dosage, must all sorts of elements of mature influence cutting, choose cutting condition correctly, determine cutting dosage reasonably, can raise machining quality and yield effectively. The factor that affects cutting condition has: Machine tool, tool, cutting tool reachs the tigidity of workpiece; Feed of deepness of cutting speed, cutting, cutting is led; Workpiece precision reachs exterior surface roughness; Cutting tool life expectancy reachs the biggest productivity; The sort of cutting fluid, cooling means; The hardness of workpiece material reachs heat treatment state; Work measure; The life of the machine tool.  

Afore-mentioned in all elements give priority to with rate of feed of deepness of cutting speed, cutting, cutting want an element.  

Cutting speed speed affects cutting efficiency directly. If cutting rate is too minor, criterion cutting time is met lengthen, cutting tool cannot develop its function; If cutting rate is too rapid, although can shorten cutting time, but cutting tool produces high fever easily, affect the life of cutting tool. The element that decides cutting rate is very much, wraparound rise have:  

(Material of 1) cutting tool. Cutting tool material is different, permission highest cutting rate is different also. High-speed steel cutting tool is high temperature resistant cutting speed is less than 50m / Min, carbide cutting tool is high temperature resistant cutting speed can amount to above of 100m / Min, of cutting tool of pottery and porcelain high temperature resistant cutting speed can be as high as 1000m / Min.  

(2) workpiece material. Discretion of workpiece material hardness can affect rate of cutting tool cutting, speed of the cutting when same cutting tool processes hard data should be reduced, and when processing weaker data, cutting rate can rise.  

(Life of 3) cutting tool. Cutting tool uses time (life) the demand is long, should use inferior cutting rate. Conversely, can use higher cutting rate.  

(4) cutting deepness and feed are measured. Cutting deepness and feed amount are large, cutting fights force big also, heat in metal cutting can increase, reason cutting speed should be reduced.  

(The appearance of 5) cutting tool. The sharp degree of the size of the appearance of cutting tool, angle, point meets those who affect cutting rate to choose.  

(6) cooling fluid is used. Gao Ke of good, precision raises machine tool tigidity cutting speed; Conversely, need to lower cutting rate.  

In all elements of afore-mentioned influence cutting speed, the effect with cutting tool qualitative material is most main.  

Cutting deepness basically suffers machine tool stiffness restrict, below the condition that allows in machine tool stiffness, cutting deepness should as far as possible big, if do not accept the restriction that machines precision, can make cutting deepness is equal to the mental allowance of the spare parts. Can reduce knife number so.  

The cutting rate that main shaft rotate speed should permit according to machine tool and cutting tool will decide. Can use numeration or check watch law to choose.  

R) of feed F(mm / or Min) of / of feed speed F(mm want surface roughness of the treatment precision according to the spare parts, surface, cutting tool and workpiece material to choose. Speed of the biggest feed accepts the restriction of machine tool stiffness and feed drive and numerical control system.  

Process designing member when choosing cutting dosage, must mix according to the requirement of machine tool manual cutting tool durability, the choice suits machine tool characteristic and cutting tool the cutting dosage of optimal durability. OK also of course by experience, use analogy law to determine cutting dosage. No matter use what method to choose cutting dosage, want to make sure the durability of cutting tool can complete the treatment of a spare parts, or make sure cutting tool durability does not work under order, the smallest also cannot the time under half order.

Numerical control lathe machines spherical error analysis to reach eliminate a method

Graph the error sketch map of axis of X of deviate of point of a knife of 1 lathe tool

When the treatment on numerical control lathe is spherical, appearance error influencing factor and eliminate a method to be as follows.

    The error that axes of main shaft of deviate of lathe tool point of a knife causes and eliminate a method (it is exemple) with the ball inside the car. If the graph is shown 1 times, ∆Y is the distance of axis of X of lathe tool deviate, dt is diameter of theory of A-A section plane, d needs ball diameter for place, r=D/2 amount to accuses radius of interpolation of circular arc of lathe cutting tool. On A-A section plane curve of interpolation of cutting tool circular arc shows long axis to be kind of ellipse of D1 for D, short axis, its error is for D=D-D1=D-2[(D/2)2-∆Y2]½(1) in actual production, product blueprint should put forward to be machined commonly ball diameter precision. If machine ball bearing precision to be in commonly ± 0.005mm less than, namely D=0.01mm. To assure this precision, must control ∆Y. By type (1) knows ∆Y= ± ½(2Dd-d2)½(2)

    Graph sketch map of 2 pairs of knives

    Set D=80mm, when machining ball bearing, computational earning | ∆Y | ≤ 0.63mm. If pursue,to knife method 2 are shown. The numerical value on dial gauge is ∆Y value namely. The influence of error of the centre of a circle of interpolation of cutting tool circular arc and eliminate a method (with the car inside spherical for exemple) show 3 times like the graph, ∆X is the distance of axis of Y of deviate of the centre of a circle of interpolation of cutting tool circular arc, d needs ball diameter for place, d1 is XOY plane to go up to machine a diameter actually: D/2 is radius of interpolation of cutting tool circular arc. Visible, on XOY plane, error D=D1-D=2∆X: On XOZ plane, the elliptical ball that shows long axis diameter to be D for diameter of D1, short axis, its errorD=D1-D=2∆XCompare a law to remove the effect of error of the centre of a circle of interpolation of cutting tool circular arc with pointwise.

    Graph the centre of a circle of interpolation of circular arc of 3 cutting tool affects sketch map (inside spherical)

    (A)2∆X>0, to compensation ∆X

    (B)∆X<0, lose to compensation ∆X
    Graph 4 cutting tool compensate sketch map

    Thick car sets D to need for place inside ball diameter, 1 ~ 1.5mm stays when thick car surplus of half fine vehicle, namely A1=D-(1 ~ 1.5) . internal diameter of thick car ball A1 of diameter of interpolation of the circular arc in real measure and program is compared, get error of center of main shaft of deviate of the centre of a circle of interpolation of cutting tool circular arc to be 2∆X. Be like 2∆X>0, criterion direction of edge X axis to compensation ∆X, be like 2∆X<0, lose along X axis direction to 4) of compensation ∆X(graph. Half thick car leaves surplus of 0.5mm fine vehicle, namely A2=D-0.5, measure next, quite, method of cutting tool compensatory is Alexandrine, give place to need till the car inside spherical.

Spherical principle is same inside car spherical outside surface and car, compensation way is same, what what differ is cutting tool installation way is opposite.

    Because pace of numerical control lathe enters electromotor pulse equivalent to be able to be amounted to 0.01, 0.005, 0.001mm, precision of curve of circular arc interpolation is in accordingly ± 0.01, ± 0.005, ± 0.001mm, the basis is machined spare parts demand, choose corresponding numerical control lathe, can satisfy production to need actually.

    The typical to program of machining center

    The work out of 1. drilling program

    If pursue 1, edge random is gotten point-blank equidistant aperture. If use the vertical machining center that provides FANUC-6M system, criterion machine program is as follows:

    Graph 1 The edge drills equidistant hole point-blank

     

    O1000

    N10 G92 X400.0 Y300.0 Z320.0 builds treatment coordinate department

    N20 M06 T00 changes central getting

    N30 G90 G00 X0 Y0 X, Y to fixed position

    N40 Z0 Z to fixed position

    Main shaft of N50 M03 S500 F30 is started

    N60 G81 G99 R-4.0 Z-10.0 is gotten deeply the central aperture of 5mm

    N70 G91 G00 X20.0 Y10.0 L03 repeats 3 times drill 3 centers hole

    N80 M05 main shaft rotates stop

    N90 G28 Z0 answers machine tool origin via machining origin

    N100 M06 T01 changes bore knife, return treatment dot

    NIl0 M03 G90 G00 G44 H01 G81 G99 R-5.0 Z-30.0 drills the first hole, add cutting tool compensation

    N120 G91 X-20.0 Y-10.0 L03 repeats drill hole 3 times

    N130 M05 G28 G49 Z320.0 cancels compensation of cutting tool length answers Z axis

    N140 M01 reference point

    N150 M99 P20 returns N20 block

     

    The characteristic of the program:

    1) uses G92 to build treatment coordinate department, coordinate fastens slant buy quantity undertakes installing in the program, revise adjust more convenient.

    2) has twice change a knife automatically, use compensation of cutting tool length, reflect the function that machining center machines automatically. What the main shaft after the machine tool starts makes up is cutting tool of F 10 broach, 0 knives of knife library on how should get of the center. Because whole process uses two knives only, knife library need not turn, it is OK that place changes a knife.

    3) use center is gotten (N60 block) drill fixed position hole beforehand, make aperture location exact.

    4) use relative value dictates (N70, n120) gave out the position of aperture, fasten loop function repeats use, until drill hole entirely. L03 is repeat a time.

    5) used M01(N140) program suspension. Attention: Suspensive switch should put the program on face plate of the operation when use M01 to put through the position, such indicator light on the face plate when the program carries out M01 are lighted bright, tell handlers the program is in optional stop, can assemble and unassemble spare parts, pushbutton starts by the loop when waiting for processing job to end, the program is carried out then.

    6) program ending uses M99 P20 the method that this also is end of a kind of program, the block that it makes the process returns N20 automatically goes be being carried out then, move to stop ceaselessly.

     

    2. bores hole the work out of the program

     

    Graph 2 for bearing pedestal part drawing. Craft is: Hold clip last time in horizontal machining center, use turn over boring to secure the function such as the loop, not rotational workbench, in order to make sure coaxial spends a requirement.

    Graph 2 Bearing pedestal

     

    O1001
    N10 M06 T01
    N20 G00 G90 G55 X0 Y0 Z0
    N30 M03 S350 M08
    N40 G76 G99 Z-85.0 R-5.0 Q0.3 F40 uses F 35H9 of boring of loop of boring of essence of life aperture
    N50 M05 M09
    N60 G30 Y0 M06 T02
    N70 M03 M08
    N80 G43 H02 G00 Z0

    N90 G76 G99 Z-25.0 R-5.0 Q0.3 uses boring of essence of life on the right side of circular boring F 45H7 aperture
    N100 M05 M09
    N110 G30 G49 Y0 M06 T03
    N120 G00 G43 H03 Z0
    N130 M03 M08
    N140 G87 G99 Z-85.0 R-100.0 Q6.0 uses F 45H7 of boring of the loop that turn over boring left aperture
    N150 G49 G30 Y0
    N160 M05 M09
    N170 M30

     

    Program characteristic:

    1) uses G55 set to machine coordinate department, parameter setting is used before treatment.

    2) has G30 of the instruction that change a knife 3 times, implementation boring is different the purpose of aperture, axis of the Y when horizontal machining center changes a knife must wind reference point (N60, N110 and N150) .

    3) compensates the boring cutter that handles different length with cutting tool length, make its achieve the job to nod the position to agree.

    4) program ends use M30, make the program carries out automatic restoration to arrive program position of rest. After waiting for next spare parts to install clip to be over, start circularly by again, begin again new round treatment. To such keeping that machine circularly, the action of N150 block is divided outside eliminating cutting tool length in time to compensate, still make Y axis returns the position that change a knife, had made preparation to carry out N10 block.

    5) bores hole in essence of life in the loop, retreat a knife to allow knife movement from time to tome, handlers is when knife of knife library traditional Chinese clothes, should special attention the edge direction of boring cutter.

     

    The work out of 3. milling program

     

    Ichnography form introduces below linear the work out with circular arc machine program, graph 3 it is magnet steel tile piece mould graph, the order that processes this mould with vertical machining center is as follows:

    Graph 3 Magnet steel tile piece mould

     

    O1002
    N10 M06 (uses F 20 to establish milling cutter)
    N20 G90 G00 G54 X5.0 Y30.0
    N30 Z0
    N40 M03 S300 F30 M08
    N50 G01 G42 D1 X15.0 Y47.7 (D1=10.2)
    N60 X20.0 Y67.08
    N70 G03 X-20.0 R70.0
    N80 G01 X-15.0 Y47.7
    N90 G02 X15.0 R50.0
    N100 G01 G40 X5.0 Y30.0

    N110 G42 D2 X15.0 Y47.7
    N120 X20.0 Y67.08
    N130 G03 X-20.0 R70.0
    N140 G01 X-15.0 Y47.7
    N150 G02 X15.0 R50.0
    N160 G01 G40 X5.0 Y30.0
    N170 G00 Z100.0
    N180 M05 M09
    N190 M01
    N200 M99 P02
    Setting: D1=10.2, d2=10.

     

    Program characteristic:

    1) is same use the knife twice cutting tool radius compensates a function, realize the rough machining to the spare parts and finish machining.

    2) program can be used circularly, undertake batch is machined.

    3) radius compensates date to be D1. Radius compensates a function to want to cancel in time after give out, can produce positional deflection in other block otherwise, the function that this kind of deflection uses program restoration is obliteration not.

    If 4) introduces a subprogram to still can simplify further program.