DE1052525B - Device for program control in working machines, especially for punching, pressing, lathes - Google Patents

Description

GERMAN

In the device for regulating the program for working machines with the help of an indexing mechanism the number of cycles can be determined by a cam disk. If the program always stays the same, an economical way of working can be achieved in this way. But if you want one If you change the program, the cam disk must be replaced, which may be the case is associated with a relatively large expenditure of time.

The invention relates to a device for program control in working machines, in particular for punching, presses, lathes and machines, with the help of an indexing mechanism, with the selection a certain number of steps two selector switches are provided with two contact systems, one of which determines the beginning and the other the end of the program, after reaching it the end position the indexing mechanism continues to switch without any work processes being triggered, until it has again reached the starting position determined by the first selector switch.

An embodiment according to the invention is explained in more detail with reference to the drawing. To control the device, the indexing mechanism F with the contact system -F _{8 located} in branch 8 and the contact system F ₄ located in branch 4 as well as the limit switch F ₂ in branch 2, the timing relay ZJ? in branch 2, the pulse relay R ₁ and the cut-off relay R ₃ with their contacts distributed over the individual branches 1 to 8. The contact systems F ₄ and F ₈ are Emstelleinrichtungen such. B. the selector switch PF ₄ and W ₈ assigned.

When the control voltage is switched on, the timing relay ZR is energized, which closes its self-holding contact Z, R _% and prepares the excitation circuit for the indexing unit F by closing its contact ZR _6. (The index or the last number of the index is identical to the ordinal number of the respective branch.)

According to the invention, the contact systems F ₁ and F _{8 are assigned} selector switches W ₄ and W ₈ , which make it possible to select a certain number of successive stages. By setting the selector switch PF ₄ , the start of the switching program is set and by setting the selector switch PF ₈ , the end of the switching program is set. The contact systems F ₄ and F ₃ and the selector switches PF ₄ and W ₆ have η contacts. In the position shown, the program begins with contact χ (contact system F ₈ ) and ends with contact y (contact system F ₈ ). The preselected switching program is thus determined by the area marked by the contacts χ .. .y .
The actual program control begins with

Device for program regulation

for work machines,

especially for punching,

Presses, lathes

Applicant:

LICENTIA Patent Administration -G. m. b. H., Hamburg 36, Hohe Bleichen 22

Dipl.-Ing. Gerhard Henke, Frankfurt / M.,
has been named as the inventor

the closing of contact K ₁ . The pulse relay R ₁ , which is in series with K ₁ , picks up and energizes the _{indexing mechanism F via the normally open contact} R li6, which now advances one step. After the end of the working stroke, the limit switch F _{2 is} actuated, which controls the timing relay Zi? turns off. By opening the contact ZR _6, the timing relay ZR interrupts the excitation of the indexing mechanism F, which engages again and releases _{the limit switch F 2 again.}

Before a new pulse, the contact K _{1 must} open, the pulse relay R _{1 de-energize and} the timing relay ZR re-energized via the contact R 1/2.

The opening of the contact K ₁ is achieved, for example, in that the contact X _{1 is designed} as a push button. After pressing the push button, a return spring comes into action, which returns the push button to its starting position. It is also possible to design the contact as a limit switch that is actuated when a certain operating state is reached. The contact K ₁ can also be, for example, the contact of a pressure gauge or of the indexing mechanism itself.

In the case of further impulses caused by the self-closing contact K ₁ , the indexing mechanism F switches on, a new operation being triggered when each further contact is reached.

As soon as the contact arm A _a meets the contact y of the contact system F ₈ , the circuit for the relay R _{8 is} closed, which by opening its contacts R ₈₁₂ and 7? _8/6 and closing of its contacts R _sf3 and R ₈ J _{5 of} the timing relay Zi? and the indexing mechanism F switches to the circuit of the selector switch PF ₄ and switches itself over the holding contact J? _8/7 holds.

When the contact ZR _{S is} pulled, the indexing mechanism F advances one step; the timing relay ZR

809-769-35

Claims (3)

drops in the process, but is immediately re-energized, so that the contact Zi? e, after the response time, energizes the indexing mechanism, which advances. This game continues until the contact arm A ^ reaches the position χ of the selector switch Wt. The game is interrupted, as a result of which the cut-off relay R8 drops out and the entire device switches over for the start of the next program. The program can be changed by adjusting the selector switch Wi or the selector switch W8. If the program is to be changed by shifting the end of the program, it is sufficient to move the selector switch W8 in any direction. No further action is required. However, if the beginning of the program is to be moved, the selector switch W4 is first adjusted so that the beginning z. B. comes to rest on the contact (# + 4). So that the contact arms A1 and A8 of the indexing mechanism F also move into the new starting position, a pulse is given via the push button D7, as a result of which the indexing mechanism F moves into the new starting position in the manner described above. The subject matter of the invention can be used in all work machines, but in particular in punching machines, presses, lathes and automatic machines. Patent claims: 1. Device for program control in working machines, especially for punching, pressing, lathes utiid automats, with the help of an indexing mechanism, characterized in that two selector switches (W ₁ , W ₈ ) are provided with two contact systems (F ₁ , F ₈ ), one of which determines the beginning and the other the end of the program, whereby after reaching the end position the indexing mechanism (F) continues to switch without any work processes being triggered until it is again through the first selector switch (PF ₄ ) has reached a certain starting position. 2. Device according to claim 1 with two selectors, characterized in that the stepping mechanism (F) comprises two contact systems (F _1, F ₈₎ are provided, with the aid of the indexing mechanism (F) on the by the selector switch (W _v W ₈ ) sets the preselected program automatically. 3. Device according to claim 1 or the following, characterized in that the selector switch (W ₈ ) and the contact system (P ₈ ) are bridged by a push button (D ₇ ) through which, after changing the start of the program on the cut-off relay (R ₈ ) Impulse is given. Considered publications:
German Patent Nos. 454 036, 730 267;
U.S. Patent No. 2,360,375;
Magazine "Werkstattstechnik und Werksleiter", March 1943, pp. 93 to 100. 1 sheet of drawings © 809769/435 3.59