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



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


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


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.

The function of machining center and type

Foundation of machining center process designing

The treatment of the spare parts undertakes completely by the instruction.

Graph process of process designing of 1 machining center

The function of machining center and type

1. utility: Casing kind the treatment of spare parts and spare parts of complex curved surface.


2. function: Mill boring, auger, attack whorl to wait.


Because it is had,change knife function automatically, after workpiece holds clip, can be finished automatically or approach the work that finish each all treatment working procedure.


3. classification:


(1) can divide by configuration for:

1) vertical machining center

Motion of ① reference axis has two kinds of kind:

Box of main shaft of direction of shift of workbench of direction of A.X, Y, Z is mobile; Graph 2

B. Move: of pillar machining center? The motion of of ǎ of pool of ぷ Xiao ü , Y and Z direction is mixed by main shaft pillar shift of main shaft box will come true.

Graph sketch map of rod of movement of 2 vertical machining center

Exterior of machining center of graph 3 JCS-018A vertical pursues

2- changes the dc servo electromotor of 1-X axis box of main shaft of 5- of library of knife of disk type of 4- of ark of numerical control of knife manipulator 3-

Lathe bed of 10- of slide carriage of workbench 9- of 8- of ark of power source of drive of 7- of 6- operation face plate


② knife library: (graph 4) the knife library of vertical machining center has different form, the difference of cutting tool amount that the knife library of every kinds of form can accommodate is bigger, decided the size of machining center process capability on certain level.

Graph 4 knives library A B C D E F) library of disk type knife G H I J) chain knife library K) library of grid type knife


2) horizontal machining center

The knife library of ① horizontal machining center is chain structure commonly, knife library size is larger.

② application range is more wide, can machine screwy face, the complex part such as casing, for example the treatment of hydraulic turbine impeller.

Graph 5 horizontal machining center
Library of knife of 2- of head of 1- main shaft 3- pillar 4- pillar base 5- workbench 6- workbench base


3) establishs horizontal machining center

① establishs horizontal machining center — be use milling head stand lie changeover orgnaization implementation machines means to changeover machines means for horizontal or machine means changeover to machine means for vertical from horizontal from vertical.

② the treatment of this kind of machining center is applicable the range is more wide.

Graph 6 establish horizontal machining center signal of way of 5 axes movementA) main shaft can do 90 ° Rotate B) workbench takes workpiece to be able to do 90 ° to rotate

(2) presses functional classification:

Form of 1) main shaft: Main shaft having sheet, double main shaft or 3 main shaft;

2) workbench form: Odd workbench

Tray of 3) double workbench exchanges a system

Tray of 4) much workbench exchanges a system.

Form of 5) knife library: Library of circumgyrate type knife

Library of 6) chain knife

Composition: Face plate of the library of system of numerical control system, airframe, main shaft, feed, knife, orgnaization that change a knife, operation, tray exchanges a system (or workbench) with support systemEtc.

Use at the boring cutter of essence of aperture of Valenite air cylinder of machining center

Graph 1

Valenite pneumatic control compensates boring cutter of essence of air cylinder aperture automatically to be able to satisfy the precision that air cylinder aperture machines to ask better, the mainest is to come true to be compensated automatically in the dimension on machining center, in order to achieve the goal of treatment dimension automata. Additional, it is had and the gender leans in the high accuracy like treatment of special machine tool and Gao Ke.

The finish machining of air cylinder aperture is whole engine cylinder body the Chongzhongzhi in treatment is heavy. To assure the dimension precision of air cylinder aperture, form tolerancepublic errand and the Cpk value that get a stability, the uses an entrance generally rigid private plane in the treatment that at present home is enraging cylinder body, cooperate online (from the line) electronic check is provided and system of automatic compensation cutting tool, the automation that implements measure (automatic or semi-automatic feedback) . But, the competition as auto industry is more and more intense, the development of engine and newer rate are accelerated ceaselessly, rigid special machine tool already was not accorded with far flexible the demand of treatment, show more and more air cylinder aperture to machine move to arrive flexible on higher machining center. Here, this stationery body introduced a boring tool of essence of air cylinder aperture that is used at machining center.

The graph is shown 1 times for the is used at machining center pneumatic control of newest development of American Valenite company compensates boring cutter of air cylinder aperture automatically, this boring cutter uses HSK100 interface, have advantage of a lot of treatment.

1.Half essence boring comes true on machining center, boring of essence of life is machined apart

To satisfy the precision requirement of air cylinder aperture, valenite used the process that boring of half essence boring, essence of life machines apart on cutting tool design, in order to avoid the vibration that at the same time treatment produces. Half essence boring and end face pour horn to use push boring (main shaft be issued to lower levels) means, boring of essence of life is used pull boring (main shaft goes up) means. When treatment, take a knife to undertake changing a knife automatically directly from knife library by the manipulator that change a knife above all, next main shaft locates treatment position, undertake half essence boring above all (3 cutting tool are machined at the same time) , right now the knife clip of boring of essence of life maintains in original position, namely the radius with located needle of boring cutter of essence of life is less than the radius with located point of a knife of razor blade of half essence boring, do not participate in cutting (see a picture 2) . After the semifinishing machining that finish, main shaft continues to be versed in, undertake end face pours wine cup, after completing part, main shaft is regressive 1 ~ 2mm. At this moment, 0.4 ~ 0.6MPa (or greater pressure) compress air to enter gas mouth to input boring lever interior through be located in lateral of knife handle flange from machine tool main shaft, by the compression of the input air urges the drag link inside boring lever; Pull rod promotes form of cake of a wedge, carry clip of penknife of boring of essence of life on the head to the dimension of finish machining, next regressive labour enters main shaft, undertake boring of essence of life; After boring of the essence that finish, the compression inside boring lever air by eduction, right now pull rod loses pressure, make by orgnaization of in-house a bedspring clip of penknife of boring of essence of life returns original position, finish whole treatment to circulate (see a picture 3) ; Next main shaft locates afresh again, machine circularly the rest of air cylinder aperture.

Graph aperture of air cylinder of boring of 2 half essence (push boring)

Graph aperture of air cylinder of 3 essence boring (pull boring)

2.Automatic compensation comes true on machining center

After all aperture that machine a cylinder body, provide pair of aperture that already machined to undertake metrical through online check, if discover dimension decrescent (main as a result of bit wear away cause) , criterion the dimension that boring cutter of essence of life places needs shift of essence of life. Before machining next cylinder body, main shaft can carry cutting tool to installation to be on the pneumatic chuck device on clamping apparatus, see a picture 4. Through this pneumatic chuck fixed position intensifies cutting tool after the essence of foremost end moves knob, circumgyrate of machine tool main shaft, main shaft arranges hour hand or anticlockwise every circumgyrate 10 ° , dimension of boring of essence of life is added on radius direction or decrease 0.0025mm, realize the automatic compensation of finish machining dimension thereby. Most can circumgyrate 360 ° , just adjust a quantity always to be 0.18mm up in the diameter.

Graph device of 4 pneumatic chuck

3.Tall treatment precision reachs dependability

The design that Valenite pneumatic controls this kind of unprecedented that compensates boring cutter of air cylinder aperture automatically can be obtained on machining center with same on special machine tool treatment function and stability. Because boring cutter used compensation of revolving of machining center main shaft to replace the servo electric machinery on private plane to compensate a system, can make sure boring of essence of life repeats fixed position precision to be in 0.002mm, the cylinder of air cylinder aperture spends tolerancepublic errand to be less than 0.01mm.

4.Other characteristic

This pneumatic control compensates boring cutter of air cylinder aperture automatically besides the 3 big characteristics besides above, still have the following characteristic;

(1) inside the belt cold;
(2) dynamic balancing design, use PCBN razor blade to undertake high speed is machined;
(3) the compression of the 0.4 ~ 0.6MPa that can use workshop mark to match directly air, do not need to add other pressure boost equipment, the high-pressured cooling fluid that also can use 5MPa comes clip of drive essence boring cutter;
(4) adjust precision tall, the smallest adjust a quantity to be radius direction 0.0025mm;
(5) half essence boring, parameter of cutting of boring of essence of life can be adjusted alone;
(6) boring of essence of life uses the treatment that pull boring, avoid to decline knife mark;
(7) treatment efficiency is tall;
(8) maintenance cost is low.

Zhang Guobao: Machine tool of clench numerical control this masterstroke

A few days ago, national hair changes appoint vice director, the State Council revitalizes northeast to do director Zhang Guobao to develop an informal discussion to point out in industry of numerical control system, must take strong step, capture numerical control machine tool this masterstroke, master technology of core of numerical control system, raise the fundamental equipment level of manufacturing industry of our country equipment.

Zhang Guobao says, future a certain number of inside year, demand of market of machine tool of our country numerical control will continue with year all 10 – the rate of 15 % rises, to 2010, machine tool of homebred numerical control is produced per year will amount to 100 thousand above, sale will exceed 6 billion dollar, market space is vast. But from the industry on the whole, although our country is machine tool big country, but still not be machine tool powerful nation, industry core competition ability is not strong. Among them very main reason depends on numerical control system and lag of functional component development, especially system of numerical control of machine tool of high-grade numerical control and progress of crucial function component are slow, already became the bottleneck that industry of numerical control machine tool grows. Machine tool of homebred numerical control progresses a few this years very big, a lot of products that count an import for a long time in the past achieved the breakthrough of 0. But, the numerical control system of form a complete set of machine tool of our country high-grade numerical control 99 % above is foreign product, although use partial country product, still also be in try out phase, far the level that did not reach client satisfaction.

Zhang Guobao emphasizes, numerical control system is the core component of numerical control machine tool, its technology level not only the performance quality that affects numerical control machine tool directly and market are had rate, to the important key such as light industrial, spin, shipping the treatment of the spare parts also has very important sense.

Bought a machine tool to also can be mortgaged, half equipment money by assure the company is offerred assure

Like buying a machine tool to be able to resemble buying a house, do mortgaged. Yesterday, wen Zhou hands in company of 10 thousand travel, Electromechanical and golden trade to assure the company takes the lead in rolling out in whole town ” the machine tool is mortgaged ” new business. This is meant, the enterprise will be mixed henceforth individual manage door, the machine tool equipment that sells by company of 10 thousand Electromechanical is bought in Wen Zhou when, can pass head pay certain amount, get equipment of machinery of a complete set of with the means of instalment next.

Concern chief introduction according to limited company of equipment of 10 thousand Electromechanical, enterprise or individual manage door when buying mechanical equipment, need to pay the mechanical equipment money of 50% only, the others the equipment money of 50% by assure the company is offerred assure, through borrow money to the bank and realizing the access of equipment of pair of a complete set of. Loan time limit is a year, the two years longest, the company pays to still be borrowed by 12 months share inside a year, bank loan interest is buckled by season pay, accrual chases season to decrease by actual loan amount, final profit follows this Qing Dynasty.

It is reported, “The machine tool is mortgaged ” new business will alleviate effectively the capital pressure when medium, small company is expanding scale of production or updating equipment is transformed; In the meantime, also be to be in lukewarm state city to launch the program of a materiality that rolls out below the big setting that solves financing difficult problem for medium, small company.