SE123775C1

SE123775C1 -

Info

Publication number: SE123775C1
Authority: SE
Publication date: 1948-01-01

Description

KLASS 49 a:66 BESKRIVNING OFFENTLIGGJORD AV KUNGL. PATENT- OCR REGISTRERINGSVERKET BEVIDAT DEN 11 NOVEMBER 1948 PATENTTID FRAN DEN 27 AUG. 1945 PUBLICERAT DEN 11 3ANUARI 19'49 Ans. den "/8 1945, nr 6419/1945. Hartill en ritning. CLASS 49 a: 66 DESCRIPTION PUBLISHED BY KUNGL. PATENT- OCR REGISTRATION WORK GRANTED ON 11 NOVEMBER 1948 PATENT PERIOD FROM 27 AUG. 1945 PUBLISHED ON 11 3ANUARY 19'49 Ans. den "/ 8 1945, no. 6419/1945. Hitherto a drawing.

S. S. 0. GUSTAFSSON, SAVEDALEN OCH E. K. PETTERSON, GOTEBORG. S. S. 0. GUSTAFSSON, SAVEDALEN AND E. K. PETTERSON, GOTEBORG.

Centreringsanordning vid svarvar for stangfortnip,,a arbetsstycken. Centering device for lathes for rod fasteners, workpieces.

Foreliggande uppfinning avser en centreringsanordning vid svarvar for stangformiga arbetsstycken, vilken anordning fir av det slag, som hr avsedd att i form av en hallare till- fOiligti en dubbdocka och är forsedd med en .det stangformiga arbetsstycket motvand vridbart men .ej fOrskjutbart lagrad skalformig styrkropp, i vars spets fir anordnad en oppning for ett mot stanganden riktat och utifran inedelst en spak paverkbart, i hâllaren forskjutbart men ej vridbart centrumborr, och uppfinningen kdnnetecknas i huvudsak darav, att det i hallaren lagrade centrumborret är framskjutbart mot arbetsstycket mot verkan av en centrumborret och den detsamma paverkande spaken efter centreringsarbe,- tet i ursprungslaget aterforande fjader, varvid hallaren, som bildar mothall for fjadern, fir framat forlangd till ett holje, som omslnter yttersidan av den koniska styrkroppen forhindrande dennas ofrivilliga beroring under arbetet. The present invention relates to a centering device for lathes for rod-shaped workpieces, which device is of the type which is intended in the form of a holder to provide a stud and is provided with a rod-shaped workpiece rotatable but not displaceably mounted shell-shaped guide body. , in the tip of which an opening is provided for a rod-directed, and from the inside a lever movable, in the holder displaceable but not rotatable center drill, and the invention is characterized mainly in that the center drill mounted in the holder is projectable against the workpiece against the action of a center drill and the same actuating lever after centering work, the spring returning to the original stroke, the holder, which forms a counterweight to the spring, being extended forward to a housing which encloses the outside of the conical guide body preventing its involuntary contact during work.

A bifogade ritning askadliggores en utforingsform av uppfinningen visande anordningen i langdgenomskarning. The accompanying drawing illustrates an embodiment of the invention showing the device in longitudinal section.

Centreringsanordningen hr ,avsedd att for centrering av den fria anden av en i en svarv insatt stang 1 anbringas i svarvdockan och far tillfalligt ersatta svarvdubben, samt hr fOr detta andamal forsedd med en bakre konisk i svarvdockan passande fastlapp 3. Derma fasttapp utgor bakre delen av en lagerhylsa 4, som bakifran är ingangad i den som ett avlangt hus eller holje 2 utformade centreringsanordningen, vilken lagerhylsa bildar bottnen I huset. Mom huset dr i dess framat oppna andparti en styrkropp 5 vridbart men ej fi5rskjutbart lagrad genom att vara anbragt yid ena kullagerringen 6 ay ett axialkullager, Tars andra kullagerring 7 hr infast i lagerhylsans 4 framande. Styrkroppen fir framtill utformad med en konisk eller konliknande mot den fria stanganden vand urtagning 8, i Tars centrala stanganden franvanda spets en oppning 9 ar anordnad for ett mot stanganden riktat centrumborr 10 eller dylikt. Detta centralt liggande centrumborr, som med fordel ar f8rsett med spetsar i hada andar for att kunna vandas om, dit framsta spetsen Or utnott, Or infast medelst en fastskruv 11 eller dylikt ett glidstycke 12, vilket Or i mdalled glidbart lagrat i lagerhylsan 4. Glidstycket Or paverkat ay en fjader 13, som stravar att hithla detsamma med centrumborret i ett bakre overksamt fOrskjutningslage. En handtagsforsedd spak eller manoverstang 14 utraeker radiellt fran huset 2 och Or svangbart lagrad vid delta samt ingriper med sin inre ande i glidstyckets bakre del, sit att en svangrOrelse manoverstangen genom handtagets tillbakaf8- rande har en fOrskjutning av glidstycket 12 framat till foljd mot verkan av fjadern 13. The centering device hr, intended for centering the free spirit of a rod 1 inserted in a lathe 1 is placed in the lathe dock and has a randomly replaced lathe stud, and for this purpose provided with a rear conical fitting in the lathe dock 3. This fixed pin forms the rear part of a bearing sleeve 4, which is inserted from behind into the centering device designed as an elongate housing or housing 2, which bearing sleeve forms the bottom of the housing. In the front open end portion of the housing, a guide body 5 is rotatably but not displaceably mounted by being mounted on one ball bearing ring 6 on an axial ball bearing, the other ball bearing ring 7 being attached to the front of the bearing sleeve 4. The guide body for the front is formed with a conical or cone-like against the free rod end water recess 8, in the central rod end use of the tip an opening 9 is arranged for a center drill 10 or the like directed towards the rod end. This centrally located center drill, which is advantageously provided with tips in high spirits in order to be able to be repositioned, where the front tip is used, or fastened by means of a screw screw 11 or the like a sliding piece 12, which is slidably mounted in the bearing sleeve 4. Or affected by a spring 13, which strives to hit the same with the center drill in a rear inactive displacement layer. A handle-mounted lever or control rod 14 extends radially from the housing 2 and is pivotally mounted at the delta and engages with its inner spirit in the rear part of the slider, so that a pivotal movement of the control rod by the return of the handle has a displacement of the slider 12 towards action. the spring 13.

For centrering av den fria anden am den i svarven infasta stfingen 1 forsdttes stangen i rotation och den med centreringsanordningen forsedda svarvdockan forskjutes framat mot stanganden. Da stanganden darvid traffar styrkroppen 5 kommer styrkroppens koniska sida att vid svarvdockans fortsatta forskjulning automatiskt styra in stanganden till centrumlage, vilken instyrning underlattas av, att styrkroppen medbringas i rotationen. Sedan stanganden sit bragts i riktigt lage forskjutes det ,ej roterande centrumborret fram mot stangfinden, genom att man med manoverstangen 14 f8rskjuter glidstycket 12 framat, varvid ett raft forlagt centrum inborras i stanganden. Svarvdockan ken darefter dragas tillbaka och centreringsanordningen ersattas av den. normala svarvdubben. To center the free spirit on the rod 1 fixed in the lathe, the rod is moved in rotation and the turning doll provided with the centering device is displaced forwards towards the rod end. As the rod end thereby strikes the guide body 5, the conical side of the guide body will automatically steer the rod end to the center position during the continued tilting of the turning dock, which steering is facilitated by the guide body being brought into the rotation. After the rod end has been brought into the right position, the non-rotating center drill is displaced towards the rod fin, by displacing the sliding piece 12 forward with the control rod 14, whereby a center located in a raft is drilled into the rod end. The turning dock is then retracted and the centering device is replaced by it. normal lathe.

Anordningens detaljer kunna vara underkastade forandringar mom lumen for efterfoljande patentansprak. Sit kan exempelvis styrkroppens urtagning hava kurvformig i stallet for rak generatris. The details of the device may be subject to changes in lumen for subsequent patent claims. For example, the recess of the steering body may have a curved shape instead of a straight generator.

Claims

Patent claim: Centering device for lathes for rod-shaped workpieces, intended in the form of a holder to be temporarily attached to a stud and provided with a rod-shaped workpiece rotatable but not displaceably mounted, in March tip Or arranged an opening for a counter the sting directed and from the outside by means of a lever paverhart, in the holder displaceable but not rotatable 2— - center drill, characterized by the fact that the center drill stored in the holder for projection heart against the workpiece against the action of a one-drum drill and the same impacting lever after centering work in the original layer spring, the holder, which forms a counterweight to the spring, being forwardly extended to a housing, which encloses the outside of the conical guide body, preventing its involuntary contact during operation. Stockholm 1948. Sung], I3oktr, P. A. Norstedt & Siiner 480089