PL54529B1

PL54529B1 -

Info

Publication number: PL54529B1
Application number: PL113880A
Authority: PL
Inventors: Zbigniew Pufal inz.; inz. Edward Dobaj mgr
Original assignee: Instytut Spawalnictwa
Filing date: 1966-04-05
Publication date: 1967-12-27

Description

Wartosc tego napiecia 4 zalezy od pradu przeplywajacego w uzwejenju gó¬ rujacym ZSj. Zastosowany sposób zasilania uzwo*- jenia sterujacego ZSt poprzez uklad mostkowy oporników RiR*, pozwala na zlikwidowanie do- 5 datkowego uzwojenia i zasilacza polaryzacji wstep¬ nej, niezbednych w transduktorach pracujacych w ukladzie amplistatu.Po zalaczeniu napiecia zasilajacego, twornik sil¬ nika wiruje z predkoscia zalezna od wartosci tego 10 napiecia nastawionej przy pomocy suwaka opor¬ nika R2 i napedza kólko radelkowane glowicy na¬ pedowej automatu oraz asynchroniczna pradnice tachometryczna TP z zestawu tachometrycznego i TP — V. Napiecie pracjnicy TP zasila wskaznik < 15 predkosci V, po wyprostowaniu W prostowniku \ PR2 zasila jednoczesnie uzwojenie M* Strumien magnetyczny wytworzony w rdzeniu transduktora przez to uzwojenie jest skierowany przeciwnie do strumienia magnetycznego wytwo- M rzanego przez uzwojenie ZSj, w ten sposób prad¬ nica tachometryczna TP stosowana dotychczas tyl¬ ko do pomiaru predkosci zostala wykorzystana równiez do stabilizacji obrotów silnika napedowe¬ go. Transformator TR realizuje elastyczne sprze- 25 zenie zwrotne pozwalajace na uzyskanie wymaga¬ nej charakterystyki dynamicznej opisanego poni¬ zej ukladu napedowego.Silnik napedowy 1(SB) powoduje obrót kólka radelkowanego znajdujacego sie w glowicy nape- gjj dowej 3 i stykajacego sie z walcem napedowym 5, • % predkoscia odpowiadajaca nastawianej predkosci ciecia. W zaleznosci od kata skrecenia osi kólka radelkowanego wzgledem osi walca, predkosc ta rozklada sie na odpowiednie skladowe o wartosci 35 od 0 do maksimum, powodujace podluzny przesuw wózka automatu oraz poprzeczny przesuw glowicy.Tym samym, wypadkowa predkosc posuwu prze* nosi sie na palniki polaczone z glowica automatu i umieszczone przesuwnie na wysiegniku wózka, 40 w kierunku zgodnym z polozeniem tego kólka glowicy napedowej na walcu. PLThe value of this voltage 4 depends on the current flowing in the upstream winding ZSj. The applied method of supplying the ZSt control winding through the bridge circuit of RiR * resistors allows for the elimination of the additional winding and bias feeder, necessary in transducers working in the amplist circuit. After switching on the supply voltage, the motor armature rotates the speed depends on the value of this voltage, set by the slider of the resistor R2 and driven by the knurled wheel of the pedal's head of the automatic unit and the asynchronous tachometric generator TP from the tachymeter set and TP-V. Rectifier \ PR2 simultaneously feeds the winding M * The magnetic flux produced in the core of the transducer by this winding is directed against the magnetic flux produced by the winding ZSj, thus the tachometric generator TP used so far only to measure the speed was also used to stabilize the speed of the drive motor him. The TR transformer realizes a flexible feedback which allows to obtain the required dynamic characteristics of the drive system described below. The drive motor 1 (SB) causes the rotation of the knurled wheel in the drive head 3 and in contact with the drive roller 5 , •% speed corresponding to the set cutting speed. Depending on the angle of rotation of the axis of the knurled wheel in relation to the axis of the roller, this speed is divided into appropriate components with a value of 35 from 0 to the maximum, causing longitudinal travel of the machine carriage and transverse movement of the head. Thus, the resultant feed speed is transferred to the combined burners from the head of the machine and slidably placed on the arm of the trolley, 40 in the direction corresponding to the position of this wheel of the driving head on the roller. PL

Claims

1. Patent claims 4S 1. An oxygen cutting machine controlled according to the drawing, equipped with a drive head located in the head of the machine and driven by an electric motor and a drive roller connected to the trolley's running wheels, characterized by the fact that it is equipped with a transducer (TD) for the control of the cutting speed, the control winding (Z $ i) of which is powered by the resistors (RiRz).

2. Automatic machine according to claims The method of claim 1, wherein the asynchronous tachometric generator (TP) from the tachometric set, which supplies the additional control winding (ZS2) of the transducer, is provided to stabilize the speed of the drive motor.

3. Automatic machine according to claims The method according to claim 1, characterized in that the drive head (3) is mounted in the head of the machine by means of a ball bearing consisting of two sleeves and a cage with balls, enabling the rotary and reciprocating movements of the head. 6S

4. Automatic machine according to claims 5. The method of claim 1, characterized in that the steel drive roller (5) is mounted on bearings housed in eccentric mounts (6) and connected to the trolley's running wheels by means of a gear gear (Zj). m in PL