DE1957577A1 - Method and device with a measuring device for setting a numerically controlled machine tool - Google Patents

Description

November 14, 1969 Gza / hk

The American I / elding 1 TIanufacturing Comp., ¥ arren, Ohb, USA. i

J »

Method and device using a Keßger "t for adjustment a numerically controlled machine tool

The ^ rfin'lur. ^ '"Concerns imraoriRc'i controlled i-la ^ chinen, insber.on lerr a YGv:;" .-. ^! liron and a device; to :: "exact division" a "" er ': 2eu ;; ea in relation to a 2ichposition, u' - 'i. .ar; '; Lineniehl ^f -T · au ^ saschalton on ^t' 'ert: r, eugversclileii3, i "? -l" c: rn V.xiaflen ö.ec, .er'izc'igen, poor Alignment den ': i .r :: ^ pi ^, e3 based on its l.-ontnge and the like.

Numerical control of the operations of a tooling machine is now a well known technique. This v / eicts the assignment of a tool or a similar device according to the numerically programmed instructions. J) Io '.r.'7e] .su.n _c ; en beEtim: .ien the movement path of the tool, v / eloho can be linear ¹ or circular. signals which the

dor. '., or ^ Zonger; show at a given time, compared with oinrmlen, v / elche of the programmed Ληνοί r: unp; rn -ibr / tammen, which determine the ßnlin of the .forkzeug, uri ' (] -'- :: ' ./erkzou^j bev / egt, "I until the two signals _: Xr-i ^r -'a r-ind. '., ^r onri the two signals are the same, v / odurch anrezoigi; v / L / xl,' ¹ O Then the tool at a commanded place to r / "o: vri _: pirl, YiLvX <: In transmission signal generated to indicate that 6-ift & · :: Vier'kzeug is ready to issue a new command.

0Ö982S / 1ÖÖ7

to lead. Usually the commands are supplied as signals indicating a position to which the tool will be moved and as a signal indicating the magnitude of the speed at which the tool is moving to the new position shall be. For the description of the fundamentals of numerical control, a book can be given as the booking location are entitled "Numerical Control" by R. M. Dyke, Prentice-Hall, Inc., 1967.

In today's applications it is often necessary to have a large part to be machined with extremely small dimensional tolerances. In an application such. B, it is necessary to have the outer surface of a

LQa. 91 Λ cm)
Ring, 36 inches in diameter, to various dimensions.

^. (cn. + 0) 00254 cm)

bring, which must be accurate to + 0, Ü01 inches. Such a part can be a component of a jet engine where extreme accuracy in machining is vital is. Furthermore, this has been a time-consuming operation, since the workpiece is removed after each cut through the tool had to be measured «, an initial measuring operation was necessary after the first cut to avoid incorrect dimensions of the tool, poor alignment of the tool to correct its assembly or the like. A measurement was necessary ■ after successive cuts to determine the wear to correct the tool. If any errors were found during manual measurement of the dimensions of the workpiece * Have the commands or instructions for the tool been modified by the prepared program to the extent that the Compensate for mistakes. This is time consuming in that it requires the machine tool to be stopped and an operator performing the measuring operation the amount of compensation or the correction required to correct the program and determine this correction factor inserts into the computer of the device. This process is

Not only was it time consuming, but he created the opportunity for human error in setting the correct compensation for the calculator. Experience has shown that numerous had to expensive work pieces are thrown away due to these human errors.

Accordingly, it is a general object of the invention to provide a method and an apparatus by which the working or functional edge of a tool is precisely positioned can in relation to a calibration position to eliminate machine errors according to the reasons above, and consequently to to eliminate the need to measure the dimensions of a workpiece during the machining process and the workpiece to be checked and measured after completion of the processing.

In a numerically controlled machine tool, a signal is generated which causes the tool to move away from its Position moved a certain number of distance units and at a certain speed. When the tool has reached its new position, the control circuit is supplied with a transmission signal which indicates that the tool has executed the command and is ready to execute a new command. The control circuit then commands the tool to to move by a certain amount, necessary in one direction or in different directions, to a new one Position to reach. The start commands are based on the requirement that the length of the tool and the radius of the cutting edge are as large as prescribed by the manufacturer and that the tool was precisely aligned when it was installed. As has been shown, this is not necessarily true.

According to the invention a sweetener is in the form of a Block provided which surfaces parallel to the X and Y movement coordinates of the machine. The positions the-

009828/1007

These surfaces in the "and""/ coordinates are known very precisely. The machine is instructed by the program as." To bring the tool into a position which is adjacent to one of these surfaces. For example dar '.ci-vr.orf; initially instructed to move along an X or horizon until it is directly above the upper surface "·"! ": - C ¹ Of measuring device - which is close to the axis . ί> ε '.,' he 'tool is instructed to move downwards along the "' -, to a position at which rieh the .r-- ¹ -; ₍ vi" slide einor Verwir ': lj cb.mr; innerh-l'o f'e ^r -,. ■ - "": oil o:': rr; b ^ \ ~ in ~ ^r r. would. ^T .onn the work- or function k-nto dos ^ er '^ euf ^ n contact with the upper surface of the Κς-ßgerätblocks \ r .'-: ^ ". rt, v / ird a wrong transmission ^: signal generated and ^f " to the ' A ^ - wrr ' tung is sent back, v / which indicates that the ^ s ^.: <". rl:.;. ^:.:: has reached this position. In diesr- *:. · .. ·· ■; eno "'i'.k -.- the movement of the tool is stopped and the program v / eir-t starts the tool to move upwards again without contact with the: block. In so far as the position of the surface" before d which from work.?- or functional edge cc- v.-ri: .. <_ ■ stir t has been, renau is known, is di ^f : j-'cr: or functional edge ^ of the tool in ^f1 c :. -.uger-cli '·] :, i ¹ : ^τ ·. "^ -1 ^ α en; it touches the block, also known exactly. D-vher k-Vr.nen future positions of the edge of the tool instead of the ..center of the 3chnei ^ ^r; .k-intf" nradius of this: direction of the Y-axis fenau "" om ^ r-ict \ ' ^r

dr.-

Ίζ

'Γ

The work: sv "ei ~ G k ^r nn vicdorholt v / croen to the position of a part along the""axis by using a surface of the block parallel to the Y axis.

009828/1007 bad ORiGfNAi-

In the manner described, all machining errors when using a machine tool, which are based on the wear of the cutting edge of the tool, poor alignment of the tool, incorrect length of the tool, etc., are automatically excluded. Less precise and therefore less expensive tools can also be used without introducing machining errors and the number of different tools required for a workpiece can be reduced. The dimensioning operation can be carried out as often as it seems necessary in the course of machining the workpiece. In the case of a simple machining process, measuring can only be necessary once or twice during the entire machining process. This also applies in the event that relatively large dimensional tolerances are allowed. On the other hand, if the part to be machined has complicated outlines and many cuts are involved, or the allowance tolerances are extremely small, the tool can be measured after each cut. The measurement process only takes a few seconds. This time is not comparable with the time it takes an operator to use the r.'en'j to get the I ^; ~ to measure the dimensions of the part to be machined and to set the computer so that the dimensional deviations are compensated.

Further features, advantages and possible applications of the new invention emerge from the accompanying illustrations.

Examples from the following description,

! ^{; i} ii_'ur Ί Ktel.lt is a diagram which is useful for understanding the u ^ s ^ obtained Venfanreis.

003323/1007

FIG. 2 is a very simplified block diagram which shows the invention as applied to a conventional one Machine tool represents.

Figure 3 is a more detailed block diagram of a conventional machine tool to which the invention is applied can be.

FIG. U shows a partial view of a perforated tape which “supplies the numerical input data for the machine tool. This can be seen in FIG.

Figure 5 is a block diagram of a distance counter shown in Figure 3

FIG. 6 shows a logic diagram of a data transmission circuit shown in Figure 3.

FIG. 7 shows a timing diagram which responds to signals that is generated by the file transfer circuit are shown in Figure 6 and,

FIG. 8 shows a logic diagram of a circuit according to FIG Invention and its connection with the circuit shown in other figures is shown ».

The invention wi d In Ve:? H: r "ij-.g mt.t a numerically controlled vertical FiKVolv ^ ^ rdrehb r.-k described It must be noted άεϋ IUS ^ ki λ- mlimg of the invention. not restricted to a particular small one of machine tools. They i..it jxif ^ e -'- O ι.xif-v ■ ': "' · ^". Ji gc —vai ^ -rte Woi ^ ze ^^ miircMnc applicable; .

0 0 β C S. i / 1 OQ ^ BADQKIGINAl

in which a calibration position of a movable tool must be precisely determined in order to convert this element into successive Repositioning steps with extreme accuracy (within the limits of the machine) using the Calibration position is used as a reference

FIG. 1 shows diagrammatically a vertical turret lathe on which a ring 10 for machining by a tool 12 is upset. The tool is mounted in a holder 14 in a conventional manner. The tool 12 can under numerical Control vertically along a Ϊ axis and horizontally be moved along an X-axis. It can of course also be moved in other directions, which is a combination of movements in the X and Y directions.

The dimensions of the tool 12 are predetermined by the manufacture and indicate the length of the tool up to a central point 'i? a of the curvature ρ radius of its chordal edge 12b and the Radius of the chordal edge. If these dimensions are accurate and the tool is properly installed, the exact position of the Tool cutting edge can be determined. However, if the listed Dimensions are incorrect and the tool is improperly installed, or if the specified radius is due to the Tool wear has changed, the result will be inaccurate positioning of the tool. When the tool once has been used, the only position which can be determined mathematically is the center 12 a of the radius of curvature the tool cutting edge. This has led to the time consuming measurement operations discussed above became. These are eliminated through the use of the invention.

The invention summarizes the provision of an outlet device in Shape of a block 18 in the eye, which has a horizontal upper surface 18a and vertical side surfaces 18b and 18c.

009828/1007

The block 18 .. is "." Precisely measured and positioned, -so that -Hie.

Position of its upper surface 18a in the Y-Pd.ch.tung and the Positions of its side faces 1.8b. and 18g in the X direction. "/

are known exactly, - The block 18 is from.einem leading Ma- - ' . .terially manufactured or has a conductive coating and is

from the rest of the machine by an insulating material : · 20 isolated..The block 18 is connected to a control circuit, which

described later, is connected by a line 22. The: W position of the block 18. can either be movable or fixed

be. As shown, the block is on “a pusher 24” ■ -,. mounted to move it out of the way of the tool can if the "Ksßgerät- is not used.

Using the sizing method of the invention, the Tool 12 are instructed to move to the position shown to move with a cutting edge 12b in the vicinity of the surface 18a. The tool is then instructed to deviate to move in the Y direction to a point such as B-. ' one Point 26, which lies within block 1.8. When the cutting edge 12b of the tool 12 touches the surface 18a. an electrical signal to the control circuit over the line 22 sent. Because the block 18 is precisely measured and positioned is the exact position of the cutting edge of the tool known in the Y-coordinate at the time at which the Signal is sent over line 22. The tool will then withdrawn and moved to the right as shown in Figure 1. It can then be moved downwards in the Y direction "to the position which is shown in dashed lines in the figure. It would then be instructed to move left in the X direction too move until the cutting edge 12b of the tool touches the side surface T8c of the block 18. At this point will Another transmission signal sent over line 22, , weTcBies serves to place the cutting edge of the tool in the

828/1007 BAP ORIGINAL

-s-

To precisely localize the X coordinate.

After the tool has been positioned as described, it is ready to carry out its programmed instructions. ' The dimensioning process can be repeated as many times as that Complexity of the machining process demands it. If ■

· ■ a

the part to be machined / has a relatively simple outline and therefore fewer machining cuts are necessary, it may be sufficient to measure the tool just before starting the machining process. If the part to be processed is another

/ a
On the one hand, it has a relatively complicated outline, it may be desirable to measure the tool after each cut. This matter is entirely at the discretion of the programmer programming the dimensional operations into the machine programming. . . · ■

Figure 2 illustrates a very simplified block diagram showing ^0, the circuit of the invention when applied to a Conver tLonelle numerically controlled machine. The conventional numerical control circuit of the machine, which will be described in detail later, is shown in FIG. Block 28 shown. As is well known, the circuit 28 generates signals for the machine to move its tool from one position to another through a programmed range of distance increments. When the tool has reached the commanded position, a transmit signal is sent back to circuit 28 indicating the completion of the command. Circuit 28 may also generate signals for a visual readout 30 indicating the instruction or command being executed. These same signals can also be registered by a printout device 32.

009821/1907

- ίο -

In one type of numerically controlled machine, the machine program created in the form of a punched tape code. When it is desired to perform a dimensioning operation, a special code $ which shows this fact in the program strips perforated. This signal activates a measuring mode gate 34. The measuring mode gate. 34 generates a control signal for a transmission measurement transmission gate 36 'After the measuring mode signal has been transferred from the program strip to the measuring mode gate,'

"if the tool is prompted by further instructions on the strip, move as previously described according to FIG. When the tool touches the surface of the measuring block 18, a signal on line 22 is sent to a touch sensor gate 38 sent. This causes a touch signal to be sent to the transmittance meter transmission port 36 along with the Measurement mode signal from measurement mode gate 34. Coincidence of these signals causes the transmission measurement transmission port 36 to be a false one Transmission signal for the numerically controlled circuit 38 to generate. The wrong transmission signal divides accordingly informs the numerical control circuit that the tool has carried out a given command, although it has actually done so

jl is not correct. However, this is the exact position of the tool is known in a coordinate at the point in time at which the wrong transmission signal from the transmission transmission port 36 is generated for the numerical control circuit 28, the program can actually be restarted from this specially known position.

The diagram of FIG. 2 also shows an error detector gate. The error detector gate 40 is used to provide a signal for a Generate deactivation circuit 42 to shutdown the machine under one of two abnormal conditions, and to generate signals for display devices 44 which visually or audibly indicate a malfunction. On a couple

of inputs, the error detector gate 40 receives signals from the measuring mode gate 34 and 'from the touch sensor gate 38, and this sensor detector gate will generate an output signal if the tool improperly touches the measuring device, if the machine is not in its measuring mode position. At another pair of inputs is received by the fault detector port 40 signals from the numerical control, device 8 and from the other output of the measurement mode gate 34. The error detector gate 40 becomes a deactivation signal for the circuit 42

if
generate / during a measuring mode process? sin normal transmission signal is generated by the circuit 28. This can happen if the tool to be measured is too short, if the measuring device is improperly sized, or if there is a program error. In any of these cases, the circuit 42 will deactivate the machine and activate the indicators 44 ..

Figure 3 illustrates a simplified block diagram of a typical numerical controller to which the invention is applied v / can earth. The special example chosen for explanation represents a "Mark Century" numerical shape control manufactured by General Electric Company, Waynesboro, Virginia. It is noted, however, that the invention is not limited to this particular application, but rather to any given desired numerical control can be applied. As far as the control shown in Figure 3 is generally known, is these are only described to the extent necessary to enable one to have a full understanding of the invention.

009S28 / 10Q7

The basic function of a control system like the one shown in the figure is to use ck-r for continuous control; V., Coordinate position of two * or more machine movements;. or axes to take care of :. For such a control it is necessary. digV for each of the controlled axes a continuous- /: Generate "position command signal" and provide continuous feedback indication; ("Position feedback signal") the actual To ensure machine position. -

In the illustrated S3 ^r stem are the Po.sitiohsbefehlssignale and PositionsrückkoOplungssignale both. In shape. "Phase analog voltages -Any phase analog voltage is switched • Phasi ^ e ', vechs el voltage with a nominal frequency of?!? 0 Hertz. Such a voltage transmits the position information through its phase relation to a reference voltage of -250 Hertz provided in the system. In order to indicate a change in position, the phase-analog voltage is phase-shifted by an amount which is proportional to the position change.

The operation of the entire system is controlled by a · rights clash transmitter signal of 250 kilohertz, which is controlled by a crisis-alL- ) . controlled clock oscillator? 0 is generated. The 2 ^ 0-square-wave is passed from the clock oscillator 30 to a reference counter 52, in which it is paid out to the value of a 250-Iiertz- ^ real square which air reference voltage is used for all movements in the system.

In order to generate the phase analog voltage required for the Position feedback signal becomes the 25Q Hertz reference. voltage fed to a decomposition means 54, which the reference voltage converted into 250 Hertz sin or cos voltages. -. These serve as a source of two-phase excitation for

BADOFMGiNAL

■ an I ^ -Posltiönszerleiger; ^ iS / and; a / SV V / enn a; _Zerleger: \ voneah; er W
-., ■ is in its .initial statement; i

Sp-innunj; reduced *; welclie: ■ ^^ i.As ^

^ cbsenpociticui relative / zttt ". pe ^ erenzspanh ^ ng - gkase

wlr-d. The axes / the; .Zer3iege3r- '56 ' rieohaniscli ax deia

"tactei; wirdr: this ^ sinu signal vri.rd from _; the one who conducts; da, s vsin transformed with the;. same nung wis, die-sintisfÖrmicB:; wave.

signal i ^ ird: äftnlicli: uiageti

in,: a; VRechtecfewelle . "". ztf jder;:; EefarensSpan ^ Pü ^ iiäc-nsriJü

finem-

Tie. phase-analog voltage ^; ; which; e ^ a ^ serves ^ is generated. ind; eÄ vda ^

.des Taktgetoergen.era ± Q2 ^ "■ - ^:

forwarded / Wirdy Mn 'sieihe ^ -eihiaehsi ^ h ^ fe Phasenzfililwerk; 64 ·: dag; \ 25Q-KiIdföer ^ tz-Si ^ airZur "production; 250-Hertz-Reciitecfceausignalä wie 4j ^ a. A similar ^ phase analogue B.
tiönssef ehXssignäi ^ diemtj; i ^ ird; <ach
: Werk: 66 produced. .; ^; ; ^r ~ _. "- ^ - \ ^: ^ —h - / -v ■" · ■ -. '' -: -

The relative Plmsenbdes \ XP ^ denr; - 'v ^:

X-Bef ehlsphaBengeneratap S / ^^^ unäv das'; _: X ^ Po!> It ^ -

signal τοπ cäera-WelleniormerVöÖ; becomeV4ö ^v ei ^ iii: - Ji ^ Phas; efediskr ±> min ^ '^ or 6.8 vergliegen. De ^ Biskri ^ minatoP ^: irii t (ϊϊηβτα . X ^ Dförationsverstarlier- / 70 \ eiii ^: Positicfes ^ ehiefsigiial , .-. "Whose size ^ and polarity; a · function; de: r shift z ^ fißahfeB :: den: -both &quot; ^ minato: rs ₌ are,. This J <^ Po; öitioK
Motor control Τ? ⁵ , eiiien 3 & ^ ntri-eläsmötc> r 7-4; anziA ^ öp) en _? which ¹

195757?

the machine and disassembler 56 is moved in one direction to the position error signal and the phase shift between to reduce the two input signals of the discriminator. A similar circuit for generating a Y position error signal has a ϊ phase discriminator 76, an X operational amplifier 78, a Y-motor control 80 and a Y-anti-vibration motor 82 on. The Y components work exactly like the X components described above.

The position control described so far would hardly be able to hold the machine at a certain position and to bring it back to this certain position if it has been disturbed. To a controlled movement of the Ma-. machine to jerzeugen _r have the SChv / ingungszähl operations of Befehlsphasenzählwerke 64 and are modified 66, so that their Inderungsgeschwindigkeit of the phase shifts, and the overall phase shifts are to the desired Geschv / indigkeit and total displacement of controlled movement in order to produce phase shifts of the position command signals proportional., In order to achieve this purpose, the command phase counters 64 and 66 are designed so that they can receive second input signals in the form of control pulses.

■ "- ■. -Single- ...

The effect of a / control pulse that is given to a command phase counter is to prevent the no malm counting process of the counter - change momentarily, · by such a small phase shift to generate its output signal. Regularly repeated feed lines of these control pulses generate repeated ones Phase shifts of the position command signals in Increments equal to 0.000 * 1 inches of machine movement with the effect of a continuous phase shift at a rate proportional to the frequency of the applied control pulses is. The source of the control impulses for the

00 9 828/1907

Phase counters have a manually operated feed rate overdeclmngsGeschaltung 84, a 'perimeter speed control 86 and a function generator 88.

The manually operated feed speed overlap 84 is controlled by a 125-lffe- ^ eclitecke input signal, which is derived from an intermediate point within the reference counter 52. This signal is called CL in the following. If this 3i _t pi "1 were fed directly into the command phase counters 64 and 66 as a pulse stream, it would generate a maximum allowable feed rate for the system. In order to control the movement in the system with a feed rate lower than that To enable maximum, the signal CL is not sent directly to the command phase counters 64 and 66, but is reduced in frequency by being passed through the manual feed rate overlap circuit 84, the boundary speed control 86 and the function generator 88. Each of these components can use the Reduce the frequency of its input pulse train and can supply the next component of the system with a pulse train that consists of pulses with approximately the same distance with a reduced pulse repetition frequency. which are suitable for instructing the desired feed rate.

Input information for the system is provided by a numeric Data input circuit 90 supplied. Outline instructions are sent to the controller as blocks of data, each of which is a straight line dimension or a circular arc dimension specified. the

009328/1007

BATH

Data. are from a numerical input means, such as. a punched tape, a punched tape scanner ein.cele.sen, and buffer storage elements that are included within the various other components of the system. While the control is processing a data block, the following starts: the punched tape scanner is normal ο and. quickly fills the buffer with new information for the following block. . _: / After completion of processing of a given data block, the new instructions from the buffer into the active memory in response to a transmission signal will be exceeded and the. Calculation with the new data block is started. Input data are sent from the input circuit 90 to the circumscribing speed control 86 to the function generator 88 , to the X command phase counter 64 to the Y command phase counter 6Gy to a ^ f .7- 7-bstan counter 92 and one. 7-distance number wsrk 9 ^ ^! directed. - ; . . - _; ^; . ,:

It is noted in relation to the source of the control impulses for the command phase counters that the basic function of the - ..: manually operated feed rate covering control -U / - is to convert the elevator operator into a "L-gr" ■ set ', - the feed rate by hand -.' ■■ .: to increase or decrease the programmed (reading speed. The boundary speed control 86 consists of a pulse rate multiplier - which increases the pulse rate of its input signal by: 1 / 5-00 of a numerical decimo Jaiweisuni ;; · multiplied, whichever is received by the numerical input data circuit. ■ 90..., \ ■; ■ ..- -. ""'.'"■'-'. ■■ ■ -.- ■

The function generator 88 is generated by an input pulse train the boundary speed control 86 is actuated and sent under control of data from the input numerical data storage 90; Pulses to the X command phase counter 64; through - the: X distance counter 92 and to the Y - ^ - command phase counter

982 0/1007 a% D ORtGiNAL

plant. 66 through "-". "The Y-distance counter; 9fe -The 88. Performs two basic functions; from ^1. He. I.st ^: S0i attsggOle'igt, sdaß-jer to. Any time ϊώ, one; only one." ..iSp.ens,: arbeife6y ;;; Uiid 'er. . gives isipulse series: _r ; ; the; one! movement ■ "longitudinal. / v; ^^:; ^ ';'.-:;-" -. ^ - ^^; "- ;: ■ - ■■., -

a.) a straight line.; lai ^ p / pg ^
; Length -within; the capacity '' i

b. ) a Bagens- any ';, Lähgö; within pure / V 'quadrant. a ^ specified ^ iGbehe ahwe; i; sen>.: The output of the function controller has two: -lnrpwis--; ΐ ^: -> _: " ^:

. rows "BF-; and _-- ÜF" "äü ^

_: control the 'top speeds. the 'defeat ^ & s witnesses in ^: X ^ direction- and in ": -ΐ-direction>;;;um> ^! -dCe / ^ resulting: speed along; -der: -togr ^ nz ^ ühgs-. - "'" direction to generate »Likewise: tax; n; :: di: e ^v G'eS'a ^ t number ^ such X- or Y-axis impulses; vdie ^ length ^; der ^: ^ B

The X axes and ^ axes ^^ standszM ^.;

• the .shifts of the X- and / l ^ -BeÄ /"".-■

of output pulses-, -.:W^l.che';s£e. from _: ,. "■ .. _-;;

receive. If, the total number ^ - ■. -

written number passed; t received ^ AronrderA ^ uffieriöchen - ^; ■ ; Input data circuit 9p) :, -unte ^ brechfη die =; distance counting »; erke: _ den. Flow of impulses - to ^: .i; hreh correspond; Ghenderi / Be ^ h ^ sphäs ^ enzähl- 'works 64 and -66, ■' ^ οάύτρΗ ^ ηβέζ &ί'ξΡ-ψίΡΐτ-daij-'das.; ■ ■% - : "and; Y-2äh-Ilen finished; is. ¥ enn -both ^: ~ ^

have the count; finished is tv ^

operation started by: a; ; I) atenübör - ;;;;

The transmission circuit: 96-transmits -

TF to the OperationsXibertra ^ üh ^

works,; umvzu cause -,;. id ^

Buffers: in öen.active; £ ^ e; && <? R> - ^. <^^

sends-further- a transmission reset signal jPRS _; to the radio _:. ; tionsgener.ato.r- 88 and to the distance counters 92 and 9fy and ■ 'a blocking signal T3 to the function generator 88 and to. . the number works 92 and 95 » ^ιαΕ1 hurry operation. of these units ·.; .-suspend, and a buffer errückstellsignal BR to the function-.

generator and the distance counters .. The .data transmission \ ^ circuit 96 can also - by receiving a signal from the - - Passage measurement transmission gate 36, shown in FIG. 2, activated:

.will .. Bs; is this latter signal / which incorrectly, & indicates that. the machine reaches a specified position .. " * '. has and. used for measuring v / ird, v / ie described in the previous

The previous description of a numerical basic control. should ... be enough _to enable a professional to do the Invention 'totally too. to understand. Additional descriptive material . can be obtained from General .Electric ■ Companj *.

data

The numerical input circuit 90 v: eist a Streifenabtaster on various known Vriodererkennungs- and üekodierungsschaltunren .. The Dateneinganrsschaltung 90 funktionier ^": .so that SiC encoded data from the paper tape, v / ie shown in Figure A, and reads the deliodierte information passes to the different components specified in dor control. A typical strip of paper is about _2? 54 cm (1 inch) wide and information v / ill be on the strip applied, in-which one holes in the longitudinal rows. 1 to 8, and cross-column 0-5. Each column above the strip represents a character, and the number and position of the holes form a code which determines the character. In the current example, lines 1 to 4 represent numbers. Line 5 is for a Comparison control used by conventional Τ3Φ Lines 6 and 7 are used in conjunction with lines 1 and 4 to display letters. Line 8 is used exclusively for 'a signal (EOB) b used »wel-

BATHROOM QRiQiNAL

this indicates the end of a block of information. Perforation holes are punched between the numbers 3 and A.

Column 0 contains an address letter and columns 1 through contain numbers that indicate tool position movement from 1 to 9.999 inches (about 1 - 25.4009? Cm) in a direction directed by the letter in column 0. For example, the columns ~ p through 5 "could ^{contain X25217! S} , which ^{would tell the T} .verkez'ug to move in X-7lichtun £ ao 2.5217 inches (about 6.4 ^ 51 cm). This It is customary and well known Columns 1 to 5 are counted and signals v / ground are generated which indicate which column after column 0 is being decoded.

The X-axis distance counter 92 is shown in FIG. The YA.chsenabstandszä] ilA-, ^r Erk S ^ - is essentially identical to the X-axis distance counter, with the exception of the axis nomenclature and the input selection signals. That is why only one of these two distance counters is rezoi; f; As shown, the bstfuids counter is a five-decade decinal counter with connected buffers. It has a capacity of 0 to 99,999 increments, corresponding to 0 - 9.9999 inches (approx. 0 - 25, 3998 cm). In E'igur 5 the five decades of the counter are denoted by 100a to 10Oe and the corresponding _L -a £ fsr by ίθ, 2α to 102e. The output distance instruction for the lciise was read into the buffer 102 every decade, as indicated by the signals T1 to T 4 from lines 1 to 4 when the X-axis command signal is read from the paper tape. The five buffers 102a to 102e respectively and "successively receive signals R 1 to R 5 from a column counter (not shown) located in the numerical input data circuit 90." Thus, while the strip is being read, the buffers 102a to 102e are sequentially, -filled with input data. At the time of completing an instruction from one

009828/1007

In the preceding block, a transmission signal TF is fed to the counter elements 100e to 100c, which thorns the distance instructions from the buffers to the corresponding counter elements

vo rli ο

transmits. The distance counter then counts down from the fixed distance number to zero. The 10Oe member of the counter with the lowest digit receives clock pulses OL. The decades of the counter are linked so that for every more convenient downward counting in a decade, a pulse is sent to the next decade of digits in order to increase it a countdown to cause a unit. Every decade 100a to 100e of the counter also receives transfer transfer reset signals TRS and transfer blocking signals TB from data transfer circuit 96. Each buffer 100a to 100a 1COe also receives a buffer reset signal BR from the data transfer circuit.

The distance counter also has input selection gates zv / ei AND gates 104, 106 and an OR gate 108. The AND gate 104 receives a series of signals UF from the function generator 80 and the UMD grid 106 receives a series of signals DF from the Function generator 88. One or the other of the signals UF and DF is fed in as a function of the direction of movement which has been instructed. A second input to each of AND gates 104 and 10G is from the output of an AND gate 110 controlled. The AND gate 110 has five inputs, which correspond to the outputs of the counter decades 100a to 100e are connected. When the counter has counted down to zero, the AND gate 110 becomes controllable. This creates an output signal DXO for the data transfer circuit 96. This. Signal also blocks AND gates 104 and 106. Before that Counter has counted down to zero, one or the other of the AND gates 104 and 106 will be controllable and a bounding increment signal PCX is passed through OR gate 108

passed and fed to the X command phase counter 64 v / earth. This signal is also used as a control input of the first decade 10Oe of the distance number - js, at the same time a .- ". bf all a count in the counter and generate a phase shift by one increment in the command phase counter when the next following clock pulse CL is received.

Fifair 6 illustrates a logic diagram of the data transfer circuit 96 shown in block diagram form in FIG. Basically, this has a transfer reset flip-flop 112 and a transfer flip-flop 114 with different input and output ports. The transfer of the data from the buffer memory to the active instruction is normally started when both distance counters 92 ^{have reached A} ITuIl below 9, which indicates that the movement has ended due to a given data block. However, according to this invention, data transmission can also be started by supplying a false signal to the data transmission circuit, which falsely indicates the completion of a movement due to a given data block.

The transmission of the data entails four operations. In the order in which they are started, these operations are transmission blocking (TB signal), transmission reset (TRS signal), transmission (TF signal) and buffer reset (BR ). These signals have a synchronous relationship with the clock signal CL, and are connected to the data storage locations in order to produce a coordinated parallel data transmission. The time relationship of these signals is shown in FIG. The transmission blocking signal TB suspends the operation of the function generator 88 . It switches

009828/1007 _ßA oo _{R! EiNAL}

also the counting gates of all decades, except for the "smallest" Decade "102e of the distance counters 92 and 94 to a progressive To change triggers from one decade to the next during the defer transfer operation.

The transmission reset signal TRS sets both distance counters 92 and 94 again in preparation for the next one Surgery,

The transfer signal TF actuates the transfer gates in all active instruction memories and counters in order to bring the flip-flops in both counters 92 and 9 ^{/ j} into agreement with the states of the corresponding flip-flops in their buffers, and thus to carry out the actual transfer to effect the data.

The Pufferrückstellunirssignal BP, the buffer in the Abstandszählwerken 92 and 9 ^l back so that programmed distances are extinguished after they have been used einaml. The buffer values for new distances are then zero until new values are read in.

The input to the data transmission circuit leads through a AND gate 116. AND gate 116 receives DXO and DY0-3 signals from distance counters 92 and 94 and a control signal from -dem Reset flip-flop 112. The output of UIID gate 116 is connected to an input of the OR-To.rer-118. A second input of the OR-Toi es 118 is connected to the output of the transmission measurement transmission gate 36 shown in Figure 2 connected. The output of the OR gate. 118 int with an input of a UMD-J gate 120 connected and a second input of the ÜHD gate 120 receives Clock pulse CL. An output of AND gate 120 is

BATH ORIGINAL 009028/1007

With an in-part input terminal of the deployment flip-flop 1 '~ connected. The output of the ODSTi-Torer · 118 provides a Part of the control of the reset flip-flop 112. The flip-flap 112 is provided by an output from the UiTD port 122 to'- ·: '-' placed. An input of the UED port 122 receives Taircgeberimpulse CL, and a second input of the AND gate receives a control signal from the output of the transmit flip-flop 11A.

The transfer flip-flop 114 receives a set input signal from an output of an AND gate 124. An input of the AND gate 124 receives a signal from the reset FIiT-FIc;:. ' ^c , and a second input of this AND gate rece'Ti ^ Tt clock signals CL. The signal from the reset flip-flop 112 provides control for setting the ÜL-: -. : -r-aguiigs flip-flops 114. A; üicl: sxellungs input of the υbv: -cr-agungs flip-flops 11 ^ ΐετ ..ίζ an output of an AND-iCiTu 126 connected. An input, - ^ of the UIJD gate ε 126 is connected so that it clock pulse ·; CL receives, and a second input of this port is connected so as to receive an output signal from the transmit flip-flop 114. The signal from flip-flop 114 provides reset control of the same fli-p-flop.

The output gates of the data transmission circuit have three AND gates 128, 130 and 132 and an OR gate 134, which is followed by an inverter 136. UI-JD gate 128 is connected to receive TRG and TFG signals from reset flip-flop 112 and transmission flip-flop 114 and generates signal BR. The WJD gate 130 receives signals from these zv in the same way. ^r ei flip-flops, but the signals are of opposite polarity (THG and TFG) compared to the signals v supplied to the AND gate 128 / ground, and the gate 30 produces the signal TRS. The UHD port 132 also receives

009828/1007 BAD

- Zk -

Input signals from these two flip-flops, but the signals .. have different polarity relationships (TRG and: TFG) compared to those signals that the other two UHD gates be supplied, and. gate 132 generates signal TF. /That ." OR gate 134 receives signals (TRG) - from. the reset flip-flop 112 and signals from the output of the EinFengn-UilD -TOres 116. The output signal of the OR gate 13 'is only reversed through inverter 136 to generate signal TB.

The operation of the data transmission circuit is as follows:

Reset flip-flop 112 and transmit flip-flop 114 are both initially in reset states. If the . Input signals DXO and DYO for the AND gate 116 go over to the logic "Q", which indicates that the distance counters 92 and 94 have counted down to Hull, an output signal from the UlfD gate 116 causes the transmission blocking signal. .-: TB move to logical "1". This action also causes the reset flip-flop to be set to control. -. ..... '--'-.'"- . '' - '

The next input signal CL through gate 120 sets flip-flop 120. Its output signal TRG therefore changes to the logic “1” and, through the gates 13 ^ and 136, causes the output signal TB to be held at the logic “1”. When the reset flip-flop 112 is set and the transfer flip-flop 114 is reset, its output signals through the AND gate 130 cause the signal TRS to transition to a logic "1". Diec resets all Fl ^ flops in distance counters 92 and 94, causing signals DXO and DYO to transition to logic "1" and removing the setting control signal from reset flip-flop 112.

009828/1007 ^BAD ORIGINAL

The next: input impuis; ^: C ^^

11 4 because the signal " ¹ TEG-; at ae: r \ Ißgisehen-Äull; i: ö # / and the:

correct control: causes.:..;The signal 'TRS ■ g ^ n ^; d ^ n _: to; ίο; -:; give ⁿ 0 "over, that this: Sig ^

-can be ,, while; \ the reset flip-flcDp;, · tt ^ veinfosed:

Is and the transferringä-FXIp-Flop, 1 i4; zurtto; kg ^ st ^ L; Jt ^ iSt:.; _: ;.; At the same time goes-; the: signal ν3 ¹ F. to the logical: "ί? ^t ;;: uber ',; da ^ it ;; only with the logical;""t": be "can / vrexm 3 ^ and 114 are set :. ;;> -., C ^: ';: - ^ ';"- ^

The next clock pulse - ££ .; make the -flip-flop-; Λ $ -% back:.; - \ ;; ■ The flip-flop Ή2 was too ^ JerkMte ^ "- ;:. ^;

Flip-flop .11: 4 / set; warvlDah ^ r .walk / d ^ S ;; output signal · :; ;: TF for: logical ^; ; "Q" - about and "■ 'das: Äusgangssighäl -MM. ^ Ur ^ j.lögischeh ^ΐ;

The next clock pulse: ^ ;: st; ellt :: - d "as ^, 1 i? Back,;." and .caused; i: o ^; ; a "; tiber gear for ^ bgiscfeen; ^{I; 0) (i;:} the signal BR, the output _signal; e: TRS, ^-:;!. TF: ;;; unä-: TBC" include ^v-orher;; ; to the logical ¹¹ O "passed over ^ genviPie ^;

both deferred; and d / e ^ transferz ^ ■ / "■. '. ·

According to the invention; the; same: n < Data; ■ ;;.;.

started by a .logical; ¹¹ I ^ Βί ^^ φ / ^^^ ΌΕ ^^ ο ^ Λ ^ '^ -: - ; _; Vivon the Durc ^ let-Mess-tJbertragungSrTQrV ^ ö ^ ;;: ^ 2); Mug ^ directs:; ■ ">" _: will,: if the KeByorFichtung; der; -invent:

'FJ f'ur H iitß3 ^ 1t: a logical ": ^ Dlag ^ amm; a ^^^^., ^ Ο T do ^r ; dar, Λ which Vd ^

ties with. the other part: the Sieu-erurig ^ shows ^ TJie-'V- ^; :; Jenigen'-G-Ileather; dex in : Figure-: Q;:; _: g; e; z: eigteh: Schal'fcung ^ :. die; : S: Chpn;

are shown in Figure 2, v / ground generally in Figure 8 with the the same reference numerals as in the figure. 2 designated. It should be noted that AND gate 116 and ODHtl gate 118 are shown are shown in Figure 6, also in Figure 8. The tool 12 and the measuring block 18, shown in FIG. 1, are also in the form of a diagram represented by a normally open two-contact switch 140.

The circuit shown in Figure 8 can be roughly divided into two parts, which are shown on the left and right side of the figure. The circuit shown on the left is the kettle of the invention, while the circuit shown on the right relates to various error display parts. The error display parts embodied in the circuit explain exactly different parts, dt ¹ = can be included. As will be stated later, various inputs to the circuit are provided for other fault indication circuitry which may be desired in a particular application.

As shown in Figure 8, there is an entrance to the meter part of the circuit provided by the focal point 142 on the upper left of the figure. The collecting point 14 2 is directly connected to a positive DC voltage source + V and by means of a line 22 via the scarf tar 14O with Dimensions. The collection point 142 is also connected via an inverter 144 and a driver circuit 146 to one side of a display device, such as B. connected to a lamp. The other side of the display 148 is. with a negative DC voltage source -V connected.

009828/1007 badoriginal

η - *

The focal point or entry point 142 is via an inverter 150 connected to an input of an AND gate 152. An exit of AND gate 152 is with an adjustment input terminal a touch sensor flip-flop 154 is connected. An exit of flip-flop 154 is with a contending input of the AND gate 152 connected to a setting control signal for the AND gate to create.

An output of the touch sensor flip-flop 154 is with a Input of a four-input AND gate 156 connected. The other three inputs of AND gate I56 are connected in such a way that they clock pulse CL, an output signal from a measuring fode Flip-flop 158 and an output from an error detector flip-flop 160 received.

The measuring mode flip-flop 158 controls the point in time or the time

while
to which or / which an I-measuring process is carried out. The operation of the I-code flip-flop 158 is in turn controlled by output signals from the two AND gates 162 and 164. The AND gate 16? has four inputs which are connected to each other such that they receive signals from the data input circuit 90, and an output which is connected to a Einstdlleingangskler.ime of flip-flop 158 _o The AND gate 164 has the same. ^r else four inputs which are connected such that they receive signals from the data input circuit 90, and an output, which is connected to a reset input terminal of flip-flop 158th The same output terminal of the measuring mode flip-flop 158, which is connected to an input terminal of the AND gate I56, is also verbun in such a way as to give a reset signal to a reset input terminal of the touch sensor flip-flop 154.

009828/1007

The preceding / AND gate 156 has an output connection to an input of an OR gate 166. The OR gate 166 "reverses.""bypasses the output signal from the AND gate 156 and forwards it to an input, an ÜND gate 168. An output of the AND gate © s. 168 leads to a setting input terminal of a throughput measuring device. Transfer flip-flops: 170. An output of the pass-Hess. Transfer flip-flop 170. is connected to a second input of the ⁵ AND gate 168 to receive a setting input control signal ■ ".-.;.

to the AND gate. The output of the pass-through measurement transmission

■ -. ■■■ - ■ - ■■■■. . ■. "-. ■ '■." - ■ "■' ■■.". ■ .- "■

güngs flip-flops 170 is also like an input with the. .

OR gate T18 connected., Which above in connection with. Figure 6. has been described. One, second input of the OR gate 118. - / stands in connection with: the AND gate 116, v / elehes in the preceding has been described in the same figure. Hence he. the OR gate 118 generates: on; output signal for the AND gate 120.

: in the data transmission circuit in response to the reception - either a normal transmission signal - from the 'UMD gate 116 or an incorrect transmission signal from the through.

. let-measurement-transmission-flop-flop 170 ...; ■ ■ ■ V ". -. V

The output of the OR gate 118 is also connected to one Input of a UIID gate 172. An output of the AND gate 172 "is connected to a forward ν reset input terminal Measurement transfer flip-flops 170. On. second input of the ..,. . ■ AND gate 172 is: - connected in such a way that it generates clock signals: CL can receive ". Pas signal from. OR gate 118 to AND gate 172 generates a reset control signal for this

The error indicator portion of the circuit includes the "error indicator" flip-flop 160, mentioned above, which receives an adjustment input from an OR gate 174. The .OR gate 174 has two inputs which receive signals from "ÜND gates 176 .and ¹ 178.,,: X ί ^: vv;:.. ■ - .. '. ■; ..'". - / / ^; ... -

■■ "■ '■ · · ■■'""" - "'- ^ ■■■ -" = -' ^: - ^c ^ y '^ fi 4ΫΦύ ö OG / 1 ti h 1 ■■■' ■■ ^: - "■"'■"' ■■ - ■■■

The AND gate 176 has two inputs, one of which is connected in such a way that it can receive a signal from the measurement mode flip-flop 158 and the other in such a way that it receives a signal from the AND gate. χ can receive gate 116 via an inverter 180. The AND gate 178, [ also has two inputs, of which "one., is connected in such a way that it can receive a signal from the touch sensor flip-flop / and the other is set to receive a signal from an OR gate 182. The OR gate 182 'in turn receives and returns a signal from an' AND gate 184. ] around. The AND gate 184 has two inputs, one of which is connected in such a way that it can receive a signal from the I-Teß-Mode-Flip-Flop 158 and the other is connected in such a way that it is a clock signals CL can receive ..

The output of the 'error display flip-flops -160 is over an OR gate 186 to a deactivation circuit Ί88 geileiteV. The deactivation circuit 188 is used to keep the machine stationary to do in response to an error signal from the display flip-flop 16O. It can also serve as an or a plurality of warning or signaling devices 190 of the desired type to stimulate / in order for an audible or visible sign of the Ma- · '■ to worry about machine failure. -;

In normal operation, signals are passed through AND gate 116 and OR gate 118 to begin a data transfer operation in data transfer circuit 96. This has been explained above in connection with FIGS. 6 and 7. ? "; while the Me.ß-mode operation ^w ill be a false ■

Data signal passed through the OR gate 118, which the / transmission circuit; actuated in exactly the same way as a normal ■ signal which is supplied via the "AND gate 116. A measurement operation is started by the receipt of measuring mode command signals from the data input circuit '90 and by 4as AND gate 162 «The output signal of the measuring mode flip-flop 158 causes

000820/1007

a reset of touch sensor flip-flop 154 when this has not already been reset.

The machine is now instructed to move in the direction of the measuring device to move. During the time before the tool reaches the gauge, the input focal point is on a positive potential. The output of inverter 154 is on 0 potential so that the driver 146 is not actuated and

P the display device 148 is not excited. When the tool touches the meter and accordingly closes the switch, the collecting point 152 is grounded. This causes a Potential + V at the output of the inverter that actuates driver I56, to stimulate the display device 148. At the same time, a signal from AND gate 152 is applied to the touch sensor 154 to set this flip-flop. This in turn generate a logic 0 signal at one input of AND gate 156. The Meß-Moäe flip-flop 158, which has been set, also sends a logic "0" signal to another input of the AND gate I56. Provided that there is no system error " exists, the error indicator flip-flop 160 also routes a logic 0 signal to the AND gate I56. Hence the next logical O-clock generator pulse ÜT the AND gate I56 a logical "Pass the 1 output to the OR gate 166. The OR gate reverses redirects the signal, thus directing a logic "0" signal to one input of AND gate 168. When the pass-IIeß -transfer flip-flop 170 is in its reset state, it also provides a logic "0" signal to AND gate 168. Therefore, the AND gate 168 generate a logic "1" signal to set the measurement transfer flip-flop 170. This causes the Heß transfer flip-flop 170, a logical 1 signal to the OR gate 118 to transfer. The OR gate 118 reverses this signal and passes it to the AND gate 120 as a logic "0" signal in the data transmission circuit.

009828/1007

The OR gate 118 also supplies a logic "0" signal an input of the AND gate 172. Therefore, when receiving the n-first logical 'O clock pulse CL the UKD gate 172 the Reset the Durclilail IIeß transfer flip-flop 170.

The sensor flip-flop 15 ^ is reset after the heating process, either by starting a second heating process or by providing a normal transmission signal from the UIID gate 116. The first condition is established by the connection from the measuring -Iode flip-flop to the reset terminal of the touch sensor flip-flop 15 ^ ¹ , while connections for the latter reset operation are not shown.

The Hess-Mode-FliO-Flop 1 ^ 8 is reset by the reception of signals to the UIJD gate from data input circuit 90, indicating the beginning of normal program operation will.

The fault display part of the circuit disables the I machine under two conditions. These conditions exist when the tool contacts the gauge, the flow device moving is not in the Keß-Mode-Arbeitsgeise, or if during the measurement mode operation a normal transmission signal forwarded to v / ird.

The first anamality indicator has that AND gate 184, the OR gate 182 and the AND gate 178 open. If the circuit is not in Hess mode, a logical "O" signal is sent to an input of the AND gate passed by the measurement mode flip-flop 158. Therefore, when it arrives of the next logical "0 clock pulse CL / via the

a signal

BAD ORIGINAL 009828/1007

OR gate 182 v transmitted / ground, and as a logical "there appear 0-2Signal at an input of the UI-ID gate 178th ^T, tfenn the l / erkzeig touches the measuring device, characterized a logical" O ^ signal at the output of the touch sensor flip-flop 154 appear. This signal is also passed to the AND gate 178 so that the AND gate 178 will pass a signal via the ODZH gate 174 for setting the Fohler indicator flip-flop 160. \ Jenn the error indicator flip-flop 160 is set, it sends a logic "1" signal to the input of the UIJO-Torec 1 ^ 6, so that the measuring device is inoperative. of course, fault indicator flip-flop 160 also passes a signal through OR gate 186 to deactivation circuit 188 to suspend operation of the machine.

i, ^r f the second mentioned Ano-.nalität occurs, v, ^r ith this indicated by the AND gate 176th In the I-Ieß code mode of operation, the measuring mode flip-flop 158 sends a logic "0" signal? U: the input of the AND gate 176. If a normal transmission should now take place, the AND will be Gate 116 generate a logic 1 output signal. This signal is untwisted by the inverter and passed to the second input of gate 176 as a logic "0" signal. This causes a signal to be passed from this AND gate through OR gate 174 to set the error indicator flip-flop 160 and suspends operations as described above.

The reset of the fault indication flip-flop 160 is accomplished by manual control (not shown). This ensures that the machine malfunction is brought to the attention of an operator and the condition is corrected before again is switched on.

009828/1007 badoriginal

Ss v / ill be noted that the OR gates 166, 182 and 186 not ings-signal inputs representing only as 3i _f ~ nalinverter serve, but also additional in the system: the measuring apparatus of the invention may, for. B. used as an inspection apparatus. In this case, the unused input of the OR gate 166 could be connected to ground such that a signal is generated when a sensing element makes contact with a machined surface of the workpiece. The additional inputs of the OR gates 182 and 166 can be used to receive display signals of other malfunctions in the machine, such as incorrect positioning of various other machine parts, etc.

All goals, flip-flops and other logical elements mentioned are well known to those skilled in the art and do not require any more specific embodiments of the circuit. It will, however Reference to a book entitled "Pulse, Digital and Switching Wave Forms" by Millman and Taube, McGraw-Hill Book Company, 1965 "for detailed explanations and illustrations of special circuits that may be used.

It is now apparent that the method and apparatus of the invention meet the general objective just described. Obvious advantages of using the invention include eliminating inspection time due to more accurate machining, reducing the time required for machining, both as far as machine use and operator time are considered, and eliminating a source of error of the operator. In addition, the invention allows the use of inexpensive tools and increases the period of use of the tool. DIo ■: vϊ. indunr. can also be the number of different tools that are required for a particular machining operation, rr-auz i or on

05 * 528/1007

-M-

Although an embodiment of the invention has been besehrieben and illustrated, it is clear .that one skilled make many changes and modifications without departing _from: principles and departing from the scope of the ^invention-1 "... λ \.

. ... ORIGINAL BATHROOM,

0098.2-8 / 1007 '■

Claims (6)

- 35 "- Claims A method for the predetermined adjustment of a tool in a numerically controlled machine tool, in which an electrical transmission signal indicates that the tool has reached a specified position, displayed in position coordinates of the tool, characterized by the following process steps, which are in detail provide a surface, its position The tool in the neighborhood is known in one of the coordinates Position the tool on the measuring device surface and move the measuring device relative to each other along one of the coordinates to a specified position at which the tool behind the measuring device surface would be, generate a wrong electrical transmission signal in the Case that an operational part of the "tool, the measuring device above flat- touched, which indicates a calibration position is, and the tool and the measuring device relative to each other T-reg from the I-ießgerätoberfläcfce in response on da c fair clic transmission signal to a new instructed Move position in one coordinate, the position of the measuring device surface in this one coordinate is used as a reference position. . 2. The method according to claim 1, characterized in that the operation of the machine tool is suspended when the Transmission signal is generated before the tool and 'the measuring device reach the reference position. 009828/1007 ^BATH ORIGINAL 3. The method according to claims -. "I or 2, characterized in,, that the operation is exposed to the machine tool, ■ when the wrong transmission signal is generated; while ; . the tool and the measuring device are relative to each other in move to a different position than the instructed one. - '. "./ ■■ predetermined". = "' ''" ■ - ■ -. '■ 4. Device for / positioning a tool in a numerically controlled machine tool in which a ■ electrical transmission signal indicates that the tool has a has reached the specified position, characterized by that a measuring device has a surface whose position known in terms of tool position coordinates; is that ■ ■ '. a. drive mechanism, the tool and the measuring device, relative. to one another along one of the coordinates to a · pointed position "moves at which the tool behind der'-measuring device 'surface to be." would be that an electrical circuit. which it lleßger-by and the tool is connected, .a - _: Wrong electrical transmission signal generated when an: .Operational part of the tool _{touches the:} measuring device surface, and that a control circuit actuates the drive mechanism in response to the wrong: :. To move the tool and the measuring device "away from the measuring device surface to a new commanded position in the one! Coordinate - the position of the measuring device surface in the" one coordinate being used as the reference position. " 5. Device according to claim 4, characterized by a .- Fault detector to deactivate the drive mechanism. - ,,: if the transmission signal is generated before the 'tool' touches the measuring device surface. . . . . 00 9 828/1007 BAD Ϊ9Α577-- - Ti * - 6. Device according to Claims 4- or 75y; gefea ^ nz "eichne; t 'through; an error detector. To Bes ^
ni.sraus, if.that; Tool the fe the picking tool and .the 'measuring device ^ rela: ti ^' to each other 'i # a: \ · other than the instructed ^ M-M: t VMf Blank page