DE1066653B - Controls for work machines, in particular machine tools - Google Patents

Description

GERMAN

In the main patent application is a control for machines, which several consecutive Work processes according to a given program that can be set differently from case to case should perform, described. In the case of such a control, there is a plurality of identical or similar built-up memory shells that store different commands, both input and on the output side with gate circuit «! and orders according to An von Kr ^ u / .scliierAenxteiljerji in connection.

The individual memory circuits can be connected to a number of contacts, e.g. B. in shape be acted upon by limit switches, via gate circuits and via a crossbar distributor. the Memory switches themselves are preferably designed as bistable transistor flip-flops.

The invention represents a further development of the control described in the main patent application and relates primarily to a particularly favorable configuration of the memory circuits. The invention consists in that the individual memory circuits through a counting chain. Constituted s ind, de7efi ™ GTfecier ~ "are each as steps, the individual memory circuits. In this case, a single controllable semiconductor may for each stage in each case be provided, which galvanically via resistances and diodes is connected to the controllable semiconductors of the other stages in such a way that only a single controllable semiconductor is always in one operating state, e.g. the blocked state, while all the remaining semiconductors are in the other state, e.g. in the open state.

If you have controllable semiconductors, especially transistors or those based on the principle of magnetic barrier based, used, which by themselves are not yet capable of two stable Operating state ^ with intermediate ^ unitarjileiTTBeFeicrl only "üneKrnen, Γ so" one was forced to 'Hef "", to ensure by suitable switching means that these controllable semiconductors from one to the tilt other state. In order to set up such a flip-flop circuit, one has hitherto been used for each stage Counting chain requires two transistors or other controllable semiconductors. To just with a single To be able to get by with the transistor, it would have required considerable circuit engineering effort, or one would have had to resort to transistor types, which because of their disadvantageous properties would not be suitable.

While the individual stages are capacitively coupled to one another in the counting circuits that have been used up to now, in the design of the switching control for work machines,
in particular machine tools

Addition to patent application S 56408 VIIIb / 21c
(Laying out guide 1 060 018)

Applicant:

Siemens-Schuckertwerke

Corporation,

Berlin and Erlangen,

Erlangen, Werner-von-Siemens-Str. 50

Viktor Hofmann, Erlangen,
has been named as the inventor

with only a single controllable semiconductor «for each stage while avoiding capacitive coupling lungs galvanic coupling agents are used. The galvanic coupling avoids the capacitive « Coupling existing disadvantages of a sensitive and therefore special Al impulses against interference shielding measures required structure, even apart from the fact that components are saved can and the system with increased operational reliability; is working. When using transistors a ' controllable semiconductors can each collector via a resistor and a diode with the base; be connected to the terminal of the transistor located in the following stage. An additional Kopj A resistor can be used with the basic connections of all other transistors!

Further features of the invention will be explained using the drawing. Draw the drawing an embodiment in its essential parts for the Erfmdun in a greatly simplified schematic shear representation.

In accordance with the representation in the main sponsor registration, £ 1 bis_E are a number of switching contacts, z. B. Endschaiteri, which are controlled by the ÄrrjeTFsmaschihe "" äus g (. Each of these switching contacts is provided m a line that leads to a Kreuzschienei distributor, which is denoted by 6. The ii crossbar distributors each of the specified program connections are durc Circles at certain intersection points versini

909 637/3

Claims (1)

3 4 Bildlicht, with the contacts still connected with diodes to the emitter potential, so the transistor mutual * ΈnΈEÖ ^ eTΰng '■■ "d & ~ ΐSHngOT" verseΐen TrI blocked, since the flow through resistor 57 his 'korines.' Jjle än3ereH "~ connections of the" crossing control current no longer through the diode 63 ScnTenenverteilers are in each case - with the input - flows, but diverted directly to the emitter clamp the individual stages of the counting circuits 5. This state is retained, regardless of how tied together. In the illustrated embodiment, the switching contact 30 is actuated for a long time. The exit is in contrast to the representation Γη the main stage containing the transistor Tr 1 works patents "EänfneIdun" g "does not have an independent gate circuit in a similar way to the main patent signed, because! the effect of " >> Uhd «gate has been described by registration, for suitable Did3en "uh" d '"" Wfdefstandein the circuit itself to consumers. By actuating each subsequent step is caused as the limit switch assigned in greater detail below is sequentially the should be explained. described tilting process triggered. The transistor In the individual stages of the counting circuit is Tr 2 goes into reverse direction when its base is only a single transistor. The transit in front of the input diode 64 sistoren to lie at zero potential are denoted by TrI to Tr. 6 Each stage 15 comes and then there is no more control current through which flows not only in the same way, but also in the same way as the diode 64. As soon as the transistor Tr 2 blocks and others are built up 52, shown with six stages, drops, the collector C2 becomes negative, and a number of stages can flow as desired by adding or omitting any number of stages through the resistors 59 and 79, 80, 81 and 82. 20 Control current. As a result, the transistor TrI The emitter connections of the six transistors lic-permeable, and the transistors 7Y3, Tr4, TrS gen together at zero potential. The collectors and Tr 6 remain in a permeable inlet which stood in correspondence with the transistors TrI bis. Tr6 are designated with Cl to C6, lie above the Resistors 51 to 56 at the negative potential of the 25 disturbing Tr 3 blocked and the transistor Tr 2 again Voltage source 155. Each of the collectors C 1 to C 6 is permeable. So every new command causes a is via a resistor and a diode with the switching "The outputs to the Kbllektor- Base connection of the following transistor connection connections C1 to C6 then lead one after the other bound. These are the resistors 57 to 62 and the signal voltage. Behind the transistor Tr6 follows the diodes 63 to 68. At the same time there is a Vcr- 30 again corresponding to the ring coupling of the transi- connection of each collector connection to the base disturbance 7Vl, so that after the transit has been blocked connections of all other transistors via a stors 7V6 the transistor TrI is blocked. Network of resistances. It is important that a how is indicated by the dashed representation. such a connection should not be to the immediately following image light, it is also possible in the input the transistor leads. So is z. B. between the 35 trunk lines to the. individual TransiSioTstuferT Collector Cl and the base connection of the transistor diodes are to be provided. Tr 3 a resistor 75. From the collector Cl of the Tran- The presence of such diodes is in some sistor TrI thus leads to the base terminal every other case is desirable, especially when none of the ren transistor apart from the following rectifier serving such a decoupling to the Resistance connection, so the resistor 76 is provided for the 40 connection points in the crossbar distributor 6 Transistor Tr4, a resistor 77 can be seen across the transistor. When dimensioning diodes 69 to 74 Tr5- and a resistor 78 to the transistor Tr6. care must be taken that it has a lower threshold The high-value resistors 99 to 104 must serve as the diodes 63 to 68, so only the reverse current compensation or for the then at the base of the respective transistor in the Compensation of reverse currents. The resistors 79 45 indeed zero potential is reached. The output resistors 75 to 78 that are removed from the collectors serve to couple the collector signals via "F ^ inejTgeIgneten" distributors on the ports of each individual transistor with the base amplifier ^ rcircuits ^ " can be switched directly or indirectly indirectly by means of "_3] ^" such as "äe7üm" of any other transistor apart from the und ene T branches or consumers. The circuit arrangement enables claims
always only a single transistor is locked State, because its collector then has 1. Control for working machines, especially negative potential, and thus all other machine tools receive, according to a given transistors via the resistors, the 55 nen adjustable program according to the main base connections to the collector of the blocked patent application S 56 408 VIIIb / 21c, in which transistors lead, control currents and are therefore a plurality of identical or similarly permeable. If necessary, it would also be possible to build different commands that store different commands by correspondingly modifying the circuit to form memory circuits, both input and output, so that a single transistor in the pass-through 60 works with gate circuits and arrangement area on the output side, while all the other transistors operate in the manner of crossbar distributors are in the blocking direction. Connection is characterized in that - to understand the mode of operation of the circuitry the memory circuits by a counting chain processing arrangement, it is assumed that initially those are formed, the links of which as stages the transistor Tr 6 is in the blocking state may represent 65 individual memory circuits,
and all other transistors accordingly in the through 2. Control according to claim 1, thereby working according to the detection sense. One for the delivery of a start pulse shows that - with the use of control-serving switches or pushbuttons is with 30 loading. semiconductors, especially transistors - is characterized. If a single controllable semiconductor 30, the line to the first transistor stage 70 is provided for a short time by actuating the switch for each stage, via resistors and diodes is galvanically connected to the controllable semiconductors of the other stages in such a way that only ever a single controllable semiconductor in one operating state, e.g. Tie locked state, while all other semiconductors are in the other state, e.g. B. in the open state. 3. Control according to claim 2, characterized in that when using transistors as a controllable semiconductor each collector has a resistor and a diode with the base of the transistor following in the counting direction is connected. 4. Control according to claim 3, characterized by an additional coupling via a resistor network with the base connections of all transistors except the one immediately following Transistor. 1 sheet of drawings