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PL124283B1 - Drive and control mechanism for intermittently advancing the milling machine worktable in particular with small increments - Google Patents

Drive and control mechanism for intermittently advancing the milling machine worktable in particular with small increments Download PDF

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Publication number
PL124283B1
PL124283B1 PL21920779A PL21920779A PL124283B1 PL 124283 B1 PL124283 B1 PL 124283B1 PL 21920779 A PL21920779 A PL 21920779A PL 21920779 A PL21920779 A PL 21920779A PL 124283 B1 PL124283 B1 PL 124283B1
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PL
Poland
Prior art keywords
drive
valve
cylinder
milling machine
screw
Prior art date
Application number
PL21920779A
Other languages
Polish (pl)
Other versions
PL219207A1 (en
Inventor
Kazimierz Dziura
Tadeusz Woronowicz
Original Assignee
Bumar Hydroma
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bumar Hydroma filed Critical Bumar Hydroma
Priority to PL21920779A priority Critical patent/PL124283B1/en
Publication of PL219207A1 publication Critical patent/PL219207A1/xx
Publication of PL124283B1 publication Critical patent/PL124283B1/en

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Description

Przedmiotem wynalazku jest mechanizm napedo¬ wy posuwów stolu frezarki zwlaszcza do krótkich i czesto powtarzajacych sie cyklicznie ruchów: szybki dobieg przedmiotu do narzedzia, posuw ro¬ boczy, szybki wybieg przedmiotu ze strefy obróbki do pozycji wyjsciowej.W budowie maszyn bardzo czesto wystepuje po¬ trzeba wykonywania róznego rodzaju operacji i za¬ biegów, takich jak sfrezowania, naciecia, rowki itp.Obróbke drobnych czejci mozna w takim przypad¬ ku lepiej lub gorzej usprawnic przez zastosowanie odpowiednich uchwytów, oprzyrzadowania specjal¬ nego, zezwalajacego na usprawnienie pracy i zwiek¬ szenie jej wydajnosci.W przypadku czesci wiekszych zastosowanie ta¬ kich przedsiewziec nie zawsze jest mozliwe i opla¬ calne. Z koniecznosci wiec caly cykl krótkich zabie¬ gów "" wykonany byc musi recznym przesuwem przedmiotu wzgledem narzedzia.Celem wynalazku jest wyeliminowanie tych nie¬ dogodnosci. Zostalo to osiagniete przez wprowadze¬ nie do przesuwu stolu napedu pneumatycznego, dajacego szybkie przemieszczenia, oraz hydraulicz¬ nego ukladu sterujacego.Istota wynalazku polega na zabudowie w osi sruby przesuwu frezarki isilownika pneumatyczno- -hydraulicznego, laczacego srube i poprzez konsole stól frezarki. Zadaniem silownika pneumatycznego jest przetwarzanie energii sprezonego powietrza na ruch liniowy stolu, zas zadaniem silownika hydrau- 10 15 20 23 30 licznego jest stworzenie lepszych mozliwosci stero¬ wania i regulacji ruchów.Istota wynalazku polega równiez na zabudowie w ukladzie miedzy cylindrem hydraulicznym a zbiornikiem " zaworu odcinajacego, którego zada¬ niem jest stworzenie wolnego wyplywu cieczy ro¬ boczej z cylindra przy dobiegu przedmiotu do na¬ rzedzia, oraz odciecie tego wyplywu podczas ruchu roboczego.Przedmiot wynalazku przedstawiony jest w przy¬ kladzie wykonania na rysunku, na którym przed¬ stawiony jest schematycznie uklad pneumatyczny zasilania ruchów posuwowych stolu frezarki, oraz scisle zwiazany z jego funkcjonowaniem hydraulicz¬ ny uklad sterowania szybkoscia samego ruchu ro¬ boczego.Do jednego konca sruby napedowej 1 stolu 2 fre¬ zarki przymocowane jest tloczysko 3 cylindra hy¬ draulicznego 4. Na przedluzeniu tloczyska 3 zabu¬ dowany jest cylinder pneumatyczny 5, którego tlo¬ czysko 6 jest trwale zwiazane z tloczyskiem 3 cy¬ lindra hydraulicznego 4. Zewnetrzna, nieruchoma czesc cylindrów 4 i 5 zwiazana jest z prawa kon¬ sola 7 stolu 2 frezarki. Lewa konsola 8 stolu 2 pod¬ trzymuje srube 1, która podczas pracy mechanizmu posuwu przesuwa sie w niej o wielkosc skoku cy¬ lindra penumatycznego 5.Srube 1 obejmuje nakretka 9 zwiazana z trady¬ cyjnym napedem posuwu frezarki. Sruba 1 sluzy 124 283124 283 równiez do recznego przemieszczania stolu 2 pokret¬ lem 10.Ze stolem 2 frezarki zwiazany jest zamocowany do stolu 2 wspornik 11 sruby nastawczej 12. Ze sta¬ la, nieruchoma czescia frezarki zwiazany jest kor¬ pus 13, w którym przemieszcza sie suwak 14, od¬ cinajacy polaczenie miedzy przewodami 15 i 16, podczas ruchu w prawo stolu 2 (razem ze sruba nastawcza 12). W przeciwna strone suwak 14 prze¬ mieszczany jest naporem sprezyny 17.Komory 18 i 19 cylindra pneumatycznego 5 zasi¬ lane sa z sieci sprezonego powietrza przez trójpo- lozeniowy, czterodrogowy rozdzielacz 20. Przed roz¬ dzielaczem 20 uklad zasilania ma niezbedne ele¬ menty zwiazane z tego rodzaju napedem, takie jak zawór zwrotny 21, smarownice 22, zawór redukcyj¬ ny 23, filtr 24, zawór odciagajacy 25.Podczas zasilania komory 18 cylindra 5, jego tlok 26 przesuwac sie bedzie w prawo. W prawo przesu- waó-sie bedzie równiez tlok 27 cylindra hydraulicz¬ nego 4 zasysajac do komory 28 olej ze zbiornika 29, otwierajac po drodze zawór zwrotny 30. Czesc oleju bedzie mogla sie dostac dodatkowo do komory 28 przewodami 15 i 16, po przemieszczeniu sie suwa¬ ka 14 w lewo pod dzialaniem sprezyny 17. Równo¬ czesnie stól 2 frezarki przesuwac sie bedzie w lewo, poniewaz nastapi „przyciaganie" prawej konsoli 7 stolu 2 przez srube 1 „napinana" przez cylinder 5 jak równiez i 4.Podczas zasilania komory 19 cylindra 5 nastapi, poza ruchem w przeciwna strone stolu 2 wytlacza¬ nie oleju z komory 28. Od momentu kiedy suwak 14 znajduje sie w lewym polozeniu do chwili kiedy zetknie sie on z krawedzia 31, swobodny wyplyw oleju do zbiornika jest wolny, a dalszy wyplyw jest juz mozliwy tylko przez hydrauliczny regulator * szybkosci 32. Regulator ten dziala na -/asadzle utrzy¬ mywania stalego spadku cisnienia na dlawiku 33 i w zwiazku z tym zapewnia staly przeplyw przez niego a zatem i stala szybkosc liniowa stolu 2, niezaleznie od wystepujacych oporów skrawania. to Komora 34 cylidra hydraulicznego 4 nie bierze udzialu w pracy ukladu i jest polaczona z atmo¬ sfera przewodem 35.Zastrzezenia patentowe 13 1. Mechanizm napedowo-sterujacy posuwów stolu frezarki zwlaszcza do krótkich skoków, zasilany energia sprezonego powietrza, znamienny tym, ze ma zabudowany w osi sruby przesuwu stolu dwu- cylindrowy silownik pneumatyczno-hydrauliczny 20 (5) i (4), którego zewnetrzna, nieruchoma czesc po¬ laczona jest ze stolem (2) przez konsole (7), zas czesc wewnetrzna tloczysko (3), ze sruba (1) sto¬ lu (2). 2. Mechanizm wedlug zastrz. 1, znamienny tym, 25 ze cylinder (4) ma na linii zlewu cieczy roboczej do zbiornika, usytuowany w ukladzie równoleglym do regulatora przeplywu (32), zawór odcinajacy, skladajacy sie z suwaka sterujacego (14) i korpusu (13) zabudowanych do stalej czesci maszyny, oraz ao usytuowanej wzdluz osi zaworu sruby ustawczej (12), zabudowanej przesuwnie do stolu (2) i steru¬ jacej suwakiem (14).IL- Vtf_ \3LSJ2 LZGraf. Z-d Nr 2 -i 1311/84 95+20 e&z. A4 PLThe subject of the invention is the drive mechanism of the milling table feeds, especially for short and frequently repeating cyclical movements: rapid approach of the workpiece to the tool, working feed, rapid movement of the workpiece from the machining zone to the starting position. In machine construction, there is often a need for performing various types of operations and operations, such as milling, cuts, grooves, etc. The processing of small parts can in such a case be better or worse improved by the use of appropriate handles, special equipment, allowing for the improvement of work and its increase In the case of larger parts, the use of such projects is not always possible and profitable. It is therefore imperative that the entire cycle of short operations "" must be performed by manual movement of the workpiece relative to the tool. The object of the invention is to eliminate these inconveniences. This was achieved by introducing a pneumatic drive for rapid movement of the table, and a hydraulic control system. The essence of the invention consists in installing a milling machine's travel screw and a pneumatic-hydraulic actuator in the axis, connecting the bolt and through the console of the milling table. The task of the pneumatic actuator is to convert the compressed air energy into a linear movement of the table, while the task of the hydraulic actuator is to create better possibilities of controlling and regulating the movements. The essence of the invention also consists in the installation of the valve in the system between the hydraulic cylinder and the reservoir. the shut-off device, the task of which is to create a free flow of the working fluid from the cylinder when the workpiece enters the tool, and to cut off this flow during the working movement. The subject of the invention is illustrated in an example of embodiment in the drawing, which shows Schematically, the pneumatic system of feeding the feed movements of the milling table, and the hydraulic system of controlling the speed of the working movement itself, closely related to its functioning. The piston rod 3 of the hydraulic cylinder 4 is attached to one end of the drive screw 1 of the milling table 2. the piston rod 3 is fitted with a pneumatic cylinder 5, the piston of which 6 is permanently connected to the piston rod 3 of the hydraulic cylinder 4. The fixed outer part of the cylinders 4 and 5 is connected to the right console 7 of the table 2 of the milling machine. The left console 8 of the table 2 supports the screw 1, which, during the operation of the feed mechanism, moves therein by the amount of the stroke of the penumatic cylinder 5. The screw 1 includes a nut 9 associated with the conventional milling machine feed drive. The screw 1 serves 124 283 124 283 also for manual movement of the table 2 with the knob 10. The table 2 of the milling machine is connected with the bracket 11 of the adjusting screw 12 attached to the table 2. The body 13 is bound to the fixed, stationary part of the milling machine. the slide 14, which cuts the connection between the conductors 15 and 16, moves as the table 2 moves to the right (together with the adjusting screw 12). In the opposite direction, the slider 14 is moved by the force of the spring 17. The chambers 18 and 19 of the pneumatic cylinder 5 are supplied from the compressed air network by a three-position, four-way distributor 20. Before the distributor 20, the supply system has the necessary components related to with this kind of drive, such as check valve 21, lubricators 22, reduction valve 23, filter 24, draw-off valve 25. When energized to chamber 18 of cylinder 5, its piston 26 will move to the right. The piston 27 of the hydraulic cylinder 4 will also move to the right, sucking oil from the reservoir 29 into chamber 28, opening the non-return valve 30 along the way. Some of the oil will be able to get additionally to the chamber 28 through lines 15 and 16, after moving slide 14 to the left under the action of the spring 17. At the same time, the table 2 of the milling machine will move to the left, because the right console 7 of the table 2 will be "pulled" by the bolt 1 "tensioned" by the cylinder 5 and also by the 4. 19 of the cylinder 5, apart from moving to the opposite side of the table 2, the oil will be pumped out of the chamber 28. From the moment when the slider 14 is in the left position until it touches the edge 31, free flow of oil into the reservoir is free, and outflow is now possible only by the hydraulic speed regulator 32. This regulator acts on the principle of maintaining a constant pressure drop across the throttle 33 and therefore ensures a constant flow through it and therefore a constant shaft linear bone of table 2, regardless of the existing cutting resistance. The chamber 34 of the hydraulic cylinder 4 does not take part in the operation of the system and is connected to the atmosphere by a conduit 35. Patent claims 13 1. The drive and control mechanism of the milling table feeds, especially for short strokes, powered by the energy of compressed air, characterized by the fact that it is in the axis of the table feed screw, a two-cylinder pneumatic-hydraulic actuator 20 (5) and (4), the outer, fixed part of which is connected to the table (2) by consoles (7), and the inner part - a piston rod (3), with the screw (1) of the table (2). 2. The mechanism according to claim A shut-off valve according to claim 1, characterized in that the cylinder (4) has a cut-off valve located in a system parallel to the flow regulator (32) on the line of the working liquid sink to the tank, consisting of a control spool (14) and a body (13) built into a fixed parts of the machine, and a set screw (12) located along the axis of the valve, built to slide to the table (2) and controlling the slider (14). IL-Vtf_ \ 3LSJ2 LZGraf. Z-d No. 2 -i 1311/84 95 + 20 e & z. A4 PL

Claims (2)

1. Zastrzezenia patentowe 13 1. Mechanizm napedowo-sterujacy posuwów stolu frezarki zwlaszcza do krótkich skoków, zasilany energia sprezonego powietrza, znamienny tym, ze ma zabudowany w osi sruby przesuwu stolu dwu- cylindrowy silownik pneumatyczno-hydrauliczny 20 (5) i (4), którego zewnetrzna, nieruchoma czesc po¬ laczona jest ze stolem (2) przez konsole (7), zas czesc wewnetrzna tloczysko (3), ze sruba (1) sto¬ lu (2).1. Patent claims 13 1. The drive and control mechanism of the milling table feeds, especially for short strokes, powered by the energy of compressed air, characterized by the fact that it has a two-cylinder pneumatic-hydraulic actuator 20 (5) and (4) built in the axis of the table shift screw whose outer, fixed part is connected to the table (2) by the consoles (7), and the inner part to the piston rod (3) with the screw (1) of the table (2). 2. Mechanizm wedlug zastrz. 1, znamienny tym, 25 ze cylinder (4) ma na linii zlewu cieczy roboczej do zbiornika, usytuowany w ukladzie równoleglym do regulatora przeplywu (32), zawór odcinajacy, skladajacy sie z suwaka sterujacego (14) i korpusu (13) zabudowanych do stalej czesci maszyny, oraz ao usytuowanej wzdluz osi zaworu sruby ustawczej (12), zabudowanej przesuwnie do stolu (2) i steru¬ jacej suwakiem (14). IL- Vtf_ \3LSJ2 LZGraf. Z-d Nr 2 -i 1311/84 95+20 e&z. A4 PL2. The mechanism according to claim A shut-off valve according to claim 1, characterized in that the cylinder (4) has a cut-off valve located in a system parallel to the flow regulator (32) on the line of the working liquid sink to the tank, consisting of a control spool (14) and a body (13) built into a fixed parts of the machine, and a set screw (12) located along the axis of the valve, installed slidingly to the table (2) and controlling the slider (14). IL- Vtf_ \ 3LSJ2 LZGraf. Z-d No. 2 -i 1311/84 95 + 20 e & z. A4 PL
PL21920779A 1979-10-24 1979-10-24 Drive and control mechanism for intermittently advancing the milling machine worktable in particular with small increments PL124283B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL21920779A PL124283B1 (en) 1979-10-24 1979-10-24 Drive and control mechanism for intermittently advancing the milling machine worktable in particular with small increments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL21920779A PL124283B1 (en) 1979-10-24 1979-10-24 Drive and control mechanism for intermittently advancing the milling machine worktable in particular with small increments

Publications (2)

Publication Number Publication Date
PL219207A1 PL219207A1 (en) 1981-05-22
PL124283B1 true PL124283B1 (en) 1983-01-31

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PL21920779A PL124283B1 (en) 1979-10-24 1979-10-24 Drive and control mechanism for intermittently advancing the milling machine worktable in particular with small increments

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PL219207A1 (en) 1981-05-22

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