COMBINATION TOOL

The invention refers to a combination tool with a drilling tool, which is connectable with its drive section with an adaptor, which is bringable with a tightener of a drilling spindle into turningfirm connection, and a drive case, which is on the adaptor postponable trained and drehfest connectable with this, which exhibits furthermore at the front end a recess for drehfesteu the admission of means of mounting and finally takes up in a longitudinal drilling the drilling tool. A such combination tool is admits (US-PS Nr.3, 932.904}. The drive case is stored sliding on a spindle body adjustably, which clamps the drilling tool as adaptor. In the withdrawn position of the drilling tool balls in cups of the Anpaßl0 of piece rest. By the balls the torque will transfer at the same time when screwing in. With the well-known combination tool all tool tools are in both operating conditions together used, this have however the disadvantage that the length of the combination tool must be relatively largely implemented. This has particularly with larger drilling tools an unfavorable effect. For each extension of the drilling tool this means an extension of the combination tool by the double. Furthermore it comes with application of the well-known combination tool in connection with percussion drills very easily to unerwfinschten oscillations due to of vibrations of the tool, whereby setting difficult more difficult and tilting and a false aligning of the means of mounting which can be driven can take place. Similar criteria are valid for a combination tool, with which the drilling tool 2 is bolted firmly {} with an adaptor, which is in one more inspannfutter a drill press clampable. One sliding on the adaptor case stored takes up the drilling tool in the advanced position of the case and has at its front end a recess for the turningfirm admission of means of mounting (FR-PS No. 2nd 824,419). Also this well-known combination tool possesses from there in the aueinandergeschobenen condition a substantial length. as the invention is the basis the task to create a combination tool which is suitable as Autriebsmaschinen also for large drilling tool diameters and/or screw diameters and in connection with percussion drills. This task is according to invention solved thereby that the adaptor exhibits a section with polygonal cross section, on which the drive case is suitably postponable, which exhibits 3 {} adaptor an axial drilling with a conical drilling section, the drive section of the drilling tool a conical section exhibits, that fitting and frictionconclusively by the conical drilling section is taken up and with an output section over the drilling in the adaptor out-stood into a radial output opening for an output wedge, which is intended in the tightener or in the adaptor. With the drilling tool according to invention the overall length independently of it, which is adjusted the two operating conditions - boring and/or screwing, can relatively briefly be implemented -. The drive case is implemented as separate tool tools, the constructional training of the adaptor and the drive case is however in such a manner that special problems do not develop during the handling. With the combination tool according to invention the length is very small and needs only to be a little larger than the length of the drilling tool. By will it possible implementing the combination tool very compactly and stably so that also large torques will transfer can. In addition is the arrangement in such a manner that also a drive is possible by means of percussion drill. The vibrations also arising with percussion drills intended and to affect itself not disturbing the handling of the drilling tool according to invention out. With the invention the simple removability from the tightener and/or the removability of the drilling tool is furthermore favourable. Favourable arrangements of the invention are indicated in the Unteransprüchen. s0 the invention is more near described in the following on the basis of designs. Fig.1 shows perspectively in explosion representation the combination tool after the invention. Fig.2 partly shows a side view on average of the combination tool in assembled arrangement. Fig.3 shows a cut by the combination tool after Fig.1. The Fig.4a to 4c shows three alternative execution forms of a drilling tool and an adaptor. Fig.5 partly shows another execution form of a combination tool in side view on average after the invention. The components of the combination tool, which are used with boring, are represented in Fig.1. There is a drilling tool --12-- and an adaptor --14-- shown. The drilling tool --12-- has three sections, a boron section --16--, a conical section --18-- and an output section --20--. With this execution form is the output section --20-- at the end reduced one in the diameter cylindrical section --22--. The adaptor --14-- possesses a section --24-- with polygonal cross section. The l0 adaptor --14-- possesses a second section --26--, that of first by a ring flange --28-- is separate. This second section --26-- is conical and from circular cross section. The section --26-- it is in such a way trained that it of a drilling --30-- in a tightener --32-- a percussion drill od.dgl, to be taken up can. The tightener --32-- a radial opening possesses --34--, into the one output wedge --36-- applicable is, all the removing the 8ohrwerkzeugs --12-- and the Anpaßetücks --14-- to support from the tightener to. As is best shown in Fig.2, the adaptor possesses --14-- an axial drilling extending in longitudinal direction --38--, is complementary and at least partly conical to the conical section --18-- the drilling tool. The conical sections --38, 18-- form a sufficient frictional engagement, so that no slip arises during load. The remaining part of the drilling --38-- is cylindrical and takes the section --22-- up. The output section --20-- extends over the axial drilling --38-- outside. If the output wedge --36-- into the opening --34-- , seizes he is used first the output section --20--, whereby a distance of the drilling tool from the adaptor --14-- one causes. This permits an easy exchange of a drilling tool, without D thereby the adaptor --14-- to be removed or replaced needs. A further would bring in the output wedge --36-- into the opening interrupting the interference of the tightener with the conical section causes --26-- the adaptor --14--. In Fig.2 is also a drive case --40-- shown. This possesses a first section --42--, the one internal recess --44-- exhibits, which complementary to the polygonal section --24-- the adaptor --14-- is trained. A second section --46-- a longitudinal drilling points --48-- up, which has sufficient length and sufficient diameter, around itself the largest drilling section --16-- to adapt. A third section --50-- a removable sleeve contains --52--, the one recess --54-- exhibits, which the head of a cutting screw --56-- to seize and propel can. The sleeve --62-- its integral trained hexagonal shank possesses one --58--, that of an accordingly formed recess in the drive case --40 is taken up '. The shank --58-- becomes by means of a spring-tensioned ball arrangement --60-- in the Ansnehmung held. An identical spring-tensioned ball arrangement --62-- one uses, around the drive case --40-- on the adaptor --14-- to hold. This ball arrangement --62-- is shown in the larger detail in Fig.3. Itself a tapering hole --65-- is in the wall of the drive case in the section --42-- (and in the section --50--) intended. The internal or smaller diameter of the hole --64-- is smaller than the diameter of the ball --66--. A spring steel strip --68-- extends in a groove around the extent of the drive case. The spring steel strip --68-- a halbkngelförmige mark has --70--, those over the ball --66-- seizes and the strip against Rotationsbewegnngen holds. If the drive case --40--over the hexagonal section of the adaptor, comes an even surface of the hexagon is pushed into interference with the ball --66--, itself into the hexagonal recess --44-- in-extended, and it moves outward against the pre-loading of the springy strip --68--. The ball arrangement --62-- increases the friction forces and holds the appropriate parts in the interference, until they are separated manually. This ball arrangement cannot loose-vibrate like a set screw. Although the drive transferring polygonal section --24-- and its appropriate recess it are hexagonal, understand themselves that also different polygonal cross sections can be used. With the enterprise the adaptor becomes --14-- into the opening --30-- used in the tightener. A drilling tool of suitable size, e.g. ftlr one son-oath-ends screw --56--, becomes into the adaptor --14-- begun. Then a hole becomes --72-- into the workpiece --74-- bored. Afterwards the drive case becomes --40-- over the drilling tool --12-- on the adaptor --14-- pushed, whereby a sleeve --52-- of suitable size before on the drive case --40-- touched down is. The recess --54-- seizes the head of the screw --56-- and turns it, so that the screw into the hole --72-- one pivots. One vergröl erte, not the drive serving recess --55--, their depth equal the thickness of the head of the screw is, permits it that the head arrives against the surface of the workpiece, without thereby the danger of a 0berdrehene exists. If the screw --56-- , the threads in the workpiece was cut or it was üherdreht the head of the screw turned off. It is evident that the recess can be held relative to seizing the screw head close at the percussion drill, which is particularly important when using stronger machines. The Fig.4a, 4b and 4c show three possible training of the conical section of the drilling tool. Fig.4a shows the training already described, with that the conical section --18a-- outside of the adaptor --14a-- begins and up to one point beyond the flange --28a-- goes. Fig.4b shows an alternative execution, with that the conical section --18b-- likewise again outside of the adaptor --14b-- begins, then however kentinuierlich into the Ausetoßabschnitt --20b-- turns into. A third alternative is shown in Fig.4c, in the one cylindrical part itself into the adaptor --14-- hlneinerstreckt and the conical section --18c-- completely within the adaptor --14c-- lies, if an alternative execution form, which is suitable for larger drilling tools in particular, is shown in Fig.5. With this execution form the axial drilling extends --38I-- not over the entire length of the adaptor --14v--, but only up to a second output opening --35 '--, which is intended, around the drilling tool --12 '-- from the adaptor --14 '-- to remove. Hiebei can the thin cylindrical section --22-- (Fig.1) it is void whereby the drilling tool becomes less easily susceptible to break. It understands itself that the drilling tools are standardised and that a number of sleeves --52-- for the heads of different screws to be planned. The spring steel strip --68-- can be replaced also by other means, as for example to elastomers a ring.