CS225175B1

CS225175B1 - Clamping device of bar material

Info

Publication number: CS225175B1
Application number: CS652481A
Authority: CS
Inventors: Vladimir Ing Simo
Original assignee: Vladimir Ing Simo
Priority date: 1981-09-04
Filing date: 1981-09-04
Publication date: 1984-02-13

Description

Vynález sa týká upínača tyčového materiálu, najmá pre rezacie zariadenia tyčí, rúrok a podobného materiálu roznych priemerov, pozostávajúceho zo základného bloku s priečnymi otvormi pre upínaný materiál a zvislými otvormi pre posuvné upínacie čeluste s rybinovými upínacími ploškami.BACKGROUND OF THE INVENTION The invention relates to a bar material clamp, in particular for cutting devices of rods, tubes and the like of different diameters, comprising a base block with transverse holes for clamping material and vertical holes for sliding clamping jaws with dovetail clamping faces.

Podl'a súčasného stavu techniky sú rybinové upínacie plošky upínacích čelusti vyhotovené tak, že sú vytvořené obvykle pod uhlom 90° a v ich spoločnom vrchole sa spájajú. To sice umožňuje upínat materiál o rdznom priemere, avšak pre materiál menších priemerov je takýto upínač málo ekonomický, pretože može spolahlivo upínat v každom priečnom otvore základného bloku iba 1 kus materiálu určeného k rezaniu. V případe viacerých kusov mdže dojsť ku spriečeniu tyče. Pre zamedzenie spriečenia materiálu je potřebný uhol upínacích plošiek váčší ako 90°, čo však je nevýhodné z hladiska rozloženia sil, ktorými posobia čeluste na řezaný polotovar. V případe, že ide o rúrkový materiál može dojsť k miestnemu splošteniu rúrok.According to the state of the art, the dovetail clamping faces of the clamping jaws are designed such that they are generally formed at an angle of 90 ° and are joined together at their common apex. This makes it possible to clamp material of different diameters, but for a material of smaller diameters, such a clamp is not economical because only one piece of material to be cut can be reliably clamped in each transverse opening of the base block. In the case of multiple pieces, the rod may become stuck. In order to prevent the material from clogging, a clamping plate angle greater than 90 [deg.] Is required, but this is disadvantageous in terms of the distribution of forces by which the jaws are placed on the workpiece to be cut. In the case of tubular material, the pipes may be flattened locally.

Uvedené nevýhody odstraňuje upínač tyčového materiálu podlá vynálezu, ktorého podstata spočívá v tom, že upínacie čeluste sú v mieste vrcholov ich rybinových upína2 cích plošiek opatřené zvislým zárezom pre strediaci třň uchytený na nosnej lište opatrenej upevňovacími prostriedkami tejto nosnej lišty ku spodnej ploché základného bloku.These drawbacks are eliminated by the bar clamp according to the invention, characterized in that the clamping jaws are provided with a vertical notch for the centering mandrel attached to the lower flat base block at the top of their dovetail clamping tabs.

Výhodou upínača podlá vynálezu je, že može spolahlivo upínal aj materiál relativné malých priemerov v dvojnásobnom množstve na jedno upnutie. Obzvlášť je výhodné, keď je strediaci třň obojstranne opatřený výstupkami so styčnými ploškami pre nosnú lištu. To zabráni zvačšenie výchylky strediaceho třňa v případe nežiadúceho upnutia iba jedného kusu materiálu. Ďalej je výhodné, keď ku základnému bloku je zo strany přísunu materiálu prichytené puzdro, v ktorom sú umiestnené mikrospínače s ovládacími klapkami rozloženými v dvojiciach pre každý priečný otvor, pričom horná plocha ovládacích klapiek v ich sklopenom stave je v úrovni spodnej hrany priečneho otvoru. V tomto případe sa zabráni vniknutiu kratšieho konca tyčového materiálu do zásobníka odřezaných kusov materiálu.An advantage of the clamp according to the invention is that it can also reliably clamp material of relatively small diameters in twice the amount per clamping. It is particularly advantageous if the centering mandrel is provided on both sides with projections with contact surfaces for the support rail. This prevents the centering mandrel from widening in the event of unwanted clamping of only one piece of material. It is further preferred that a housing is attached to the base block from the material feeding side, in which microswitches with control flaps distributed in pairs for each transverse bore are located, the upper surface of the control flaps in their folded state being at the lower edge of the transverse bore. In this case, the shorter end of the rod material is prevented from entering the container of cut pieces of material.

Příklad vyhotovenia upínača tyčového materiálu podlá vynálezu je znázorněný na výkresoch, na ktorých obr. 1 představuje nárysný pohlad na upínač s odmontovanou nosnou lištou strediacich třňov, obr. 2 nárysný pohlad na upínač s namontovanou nosnou lištou, obr. 3 bokorysný rez upínača s puzdrom pre mikrospínače a obr. 4 půdorysný pohíad na část upínača.An exemplary embodiment of a bar material clamp according to the invention is shown in the drawings, in which: FIG. 1 is a side view of the chuck with the centering mandrel support strip removed, FIG. 2 shows a front view of the clamp with the mounting rail mounted, FIG. 3 is a side sectional view of a clamp with a microswitch housing; and FIG. 4 is a plan view of part of the fixture.

Upínač tyčového materiálu pozostáva zo základného bloku 1 s priečnymi otvormi 2 pre upínaný materiál 3 a zvislými otvormi 4 pre posuvné upínacie čefuste 5 s rybinovitými upínacími ploškami 6. Upínacie če1'uste 5 sú v mieste vrcholov ich rybinových upínacích plošiek 6 opatřené zvislým zárezom 7 pre strediaci třň 8 uchytený pomocou čapu 9 na nosnej lište 10, opatrenej skrutkami 11 ako upevňovacími prostriedkami tejto nosnej lišty 10 ku spodnej ploché 12 základného bloku 1. Strediaci třň 8 je obojstranne opatřený výstupkami 13 so styčnými ploškami 14 pre nosná lištu 10 strediacich třňov 8. Ku základnému bloku 1 je zo strany přísunu materiálu 3 prichytené puzdro 15 tvaru uzavretého žíiabku, v ktorom sú vo dvojiciach umiestnené mikrospínače 16 s příslušnými ovládacími klapkami 17. Horné plochy ovládacích klapiek 17 v sklopenom stave sú v úrovni spodnej hrany 18 priečnych otvorov 2. Ovládacie klapky 17 sú súčasťou puzdra 15, pričom kryt 19 zakrýva mikrospínače 16 zo strany přísunu materiálu. Posuvná upínacia čeíusť 5 podobné ako aj strediaci třň 8 má pri pohlade z boku tvar „U“, pričom ramená 20 posuvnej upínacej čeíuste 5 ako aj ramená 21 strediaceho třňa 21 sú orientované proti sebe a pri pohíade zboku rozmerovo zhodné. Posuvná upínacia čeíusť 5 je pomocou čapu 22 a vidlice 23 spojená s piestnicou 24 ovládacieho valca. Mikrospínače 16 sú sériovo zapojené v ovládacom obvode rezacieho stroja.The bar clamp consists of a base block 1 with transverse holes 2 for clamping material 3 and vertical holes 4 for sliding clamping jaws 5 with dovetail clamping pads 6. The clamping jaws 5 are provided with a vertical slot 7 for the tops of their dovetail clamping tabs 6 the centering mandrel 8 is fastened by means of a pin 9 to the support rail 10, provided with screws 11 as fastening means of this support rail 10 to the lower flat 12 of the base block 1. The centering mandrel 8 is provided on both sides with projections 13 with contact faces 14 for the support rail 10 of the centering mandrels 8. To the base block 1, a closed flange sleeve 15 is attached from the material feeding side 3, in which microswitches 16 with respective control flaps 17 are arranged in pairs. The upper surfaces of the control flaps 17 in the folded state are at the bottom edge 18 of the transverse holes 2. the flaps 17 are part the housing 19 covers the microswitches 16 on the material feeding side. The movable clamping jaw 5 similar to the centering mandrel 8 is U-shaped when viewed from the side, with the arms 20 of the movable clamping jaw 5 and the arms 21 of the centering mandrel 21 facing each other and dimensionally identical when viewed from the side. The sliding jaw 5 is connected to the piston rod 24 of the control cylinder by means of a pin 22 and a fork 23. The microswitches 16 are connected in series in the control circuit of the cutting machine.

V případe upínania tyčového materiálu 3 vačších priemerov sa materiál vkládá jednotlivo, pričom nosná lišta 10 strediacich třňov 8 je odmontovaná. Pri upínaní materiálu 3 menších priemerov třeba nosnú lištu 10 namontoval na základný blok 1. Materiál 3 sa vsunie do priečneho otvoru 2 vo dvojiciach, a to dva kusy, po jednom z každej strany strediaceho třňa 8. Upínaný materiál 3 je po upnutí namáhaný na střih, avšak len v prijatelnej miere, pričom sa dosahuje požadovaná polohová stabilita materiálu 3 a u materiálu 3 menších priemerov dvojnásobná kapacita. Jednotlivo možno upínal taký materiál 3, ktorého priemer je aspoň dvojnásobkom šířky zvislého zářezu 7. Tým sa zabráni upnutiu materiálu 3 hranami vytvořenými zvislým zárezom 7 a rybinovou upínacou ploškou 6. V mimoriadnom případe, keď materiál 3 má menší priemer ako je uvedená hranica a keď je materiál 3 v upínací len jednotlivo, t. j. asymetricky, zabraňuje výstupok 13 nadměrnému vychýleniu strediaceho třňa 8. Takýto případ sa předpokládá v záverečnej fáze rezania dvojice tyčového materiálu 3, keď jeden z materiálov 3 je kratší. Mikrospínače 16 majú funkciu blokovacieho zariadenia chodu rezacieho stroja. Snímajú přítomnost upínacieho materiálu 3. V případe, že čo len v jednom poli materiál 3 chýba, dá příslušný mikrospínač 16 impulz k prerušeniu automatického pracovného cyklu stroja. Rezacie operácie zostávajúcich kusov možno ukončit ručným uvedením stroja do činnnosti.In the case of clamping of the rod material 3 of larger diameters, the material is inserted individually, the support bar 10 of the centering pins 8 being removed. When clamping material 3 of smaller diameters, the support rail 10 needs to be mounted on the base block 1. The material 3 is inserted into the transverse bore 2 in pairs, two pieces, one on each side of the centering mandrel 8. The clamped material 3 is stressed for shearing , but only to an acceptable extent, whereby the desired positional stability of the material 3 and twice the capacity of the material 3 of smaller diameters is achieved. It is possible to individually clamp a material 3 whose diameter is at least twice the width of the vertical notch 7. This prevents the material 3 from being clamped by the edges formed by the vertical notch 7 and the dovetail clamping surface 6. In an exceptional case when the material 3 has a smaller diameter than is the material 3 in the clamping only individually, i. j. Asymmetrically, the projection 13 prevents excessive deflection of the centering mandrel 8. Such a case is envisaged in the final cutting phase of a pair of rod material 3 when one of the materials 3 is shorter. The microswitches 16 function as a cut-off device for the cutting machine. They detect the presence of the clamping material 3. In the event that in only one field the material 3 is missing, the respective microswitch 16 gives an impulse to interrupt the automatic duty cycle of the machine. The cutting operations of the remaining pieces can be terminated by manually operating the machine.

Claims

Fig. 3 is a side elevational view of the clamp member; Fig. 3 is a side elevational view of the clamp with the microswitch housing; The bar material clamp consists of a base block 1 with transverse openings 2 for clamped material 3 and vertical openings4 for sliding clamping jaws 5 with fish-like clamping surfaces B. The clamping jaws 5 are provided with a vertical notch in place of the tops of the dovetail-clamping tabs 6 7 for the centering pin 8 fixed by means of a pin 9 on the support rail 10 provided with screws 11 as the fastening means of the support rail 10 to the lower surface 12 of the base block 1. The centering pin 8 is provided on both sides with projections 13 with support rails 14 for the support rail A closed-core sleeve 15 is attached to the base block 1 from the supply side of the material 3, in which microswitches 16 with respective actuating flaps 17 are disposed in pairs. The upper surfaces of the control flaps 17 in the lowered state are at the level of the lower play 18 of the transverse openings 2. The control flaps 17 are part of the housing 15, the cover 19 covering the microswitches 16 from the material feeding side. The sliding clamping jaw 5 similar to the centering jaw 8 has a "U" shape when viewed from the side, wherein the arms 20 of the clamping jaw 5 as well as the arms 21 of the centering mandrel 21 are oriented towards each other and dimensionally matched when viewed from the side. the clamping jaw 5 is connected to the control rod piston rod 24 by means of a pin 22 and a fork 23. The microswitches 16 are connected in series in the control circuit of the cutting machine. In the case of the clamping of the rod material of the larger diameters, the material is inserted individually, the support rail 10 of the centering pieces 8 being removed. When clamping the material 3 of smaller diameters, the support rail 10 must be mounted on the base block 1. The material 3 is inserted into the transverse opening 2 in pairs, two pieces, one on each side of the centering pin 8. The clamped material 3 is after clamping sheared, but only to an acceptable extent, while achieving the desired positional stability of the material 3 and the smaller the diameter of the material by 3-fold. It is possible to clamp such a material 3, the diameter of which is at least twice the width of the vertical notch 7. This prevents the material 3 being clamped by the vertical notch 7 and the dovetail step 6 from being clamped. and when the material 3 is only individually, ie asymmetrically, the projection 13 prevents excessive deflection of the centering pin 8. Such a case assumes, in the final stage of cutting, a pair of rod material 3 when one of the materials 3 is shorter. The microswitches 16 have the function of a running machine locking device. They sense the presence of the clamping material 3. In the absence of only one material 3, the respective switch 16 will provide an impulse to interrupt the automatic machine operating cycle. Cutting operation of the remaining pieces can be ended by manually putting the machine into operation. OBJECT

A bar material clamp consisting of a base block with transverse openings for clamped material and vertical openings for sliding clamping jaws with fish clamping surfaces, characterized in that the clamping jaws (5) are in dovetail positions at the top of the clamp. of clamping tabs (6) provided with a vertical slit (7) for the mandrel (8) mounted on a support rail (10) provided with fastening means (11) for attachment to the lower flat (12) base block (1).

2. Clamp according to claim 1, characterized in that the centering pin (8) is provided on both sides with projections (13) with contact surfaces (14) for the support rail (10).

3. Clamp according to claim 1, characterized in that a sleeve (15) is attached to the base block (1) from the material infeed side (3), in which the microswitches (16) with the control flaps (17) are arranged. in pairs for each transverse opening (2), wherein the upper surface of the actuating claws (17) in their folded state is at the level of the lower edge (18) of the transverse opening (2). 2 sheets of drawings