DE7536478U - DUEBEL HOLE DRILL - Google Patents

Description

Dipl.-Ing. Dr.-Ing. HEINZ M (j Ji ^ LS f PATENT Attorney 48 BIELEFELD / WESTF. ^ DetmoIdEr Strasse 26 II / Tue Jochen Elleraiek, U96 BündB 1. Südring 75 A Dowel hole drilling machine

The subject of the innovation iat Bine dowel hole drilling machine, consisting of a machine frame with a multitude of one or more motors and Medium-powered drilling spindles.

For woodworking machines are known in the furniture industry, with the help of which in a Operation on a workpiece (furniture part) all Boreholes for receiving dowels and floor support elements serve, have it manufactured. For example, one type of woodworking machine is considered state of the art Technology has become known in which Bine larger number of drill heads inar ReihB behind-bzu. lying next to each other in a continuous box are stored o

Db all of them with such a machine? Spindles are in a row, only those drilling operations can inevitably be carried out that are in Row.

Another disadvantage is that of bridging The headstock heats up during work adjusts and calibrates as a result a length expansion, which affects the dimensional accuracy of the distances between the drill holes produced

As far as BB is already known, diB individual drilling spindles by means of a belt drive from a common one To drive drive motor, there are the disadvantage that either the center distance of the individual Drilling spindles is too large to each other, there is a slip between the surrounding means and the spindle shaft and thus uneven speeds are possible, a large-volume (space-consuming) construction is present, high revolutions are not transmitted properly or individual drilling spindles are not resp. Extremely greasy demountable provided.

According to DT-QS 2 2D5 265, this task is performed by a Multi-spindle drilling device according to dar mentioned above Type solved by the fact that the drilling spindles are preferentially

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uiaiae with the same direction of rotation Moving in the slightest Distance to each other aueuecheelbar in the housing (Spindelkaaten) and are individually driven by a toothed belt belt, uobei each drilling spindle is detachably held with a bearing part in the housing and at the spindle end lying within the housing there is a toothed belt coming with dBm Pinion and the one provided outside the housing Spindle end a tool holder, preferably a Chuck for a drill bit.

A drilling and milling unit according to DT-OS 22 59 139 has three spindles lying next to one another, which all rotate in the same direction in the same direction and are therefore suitable for accepting machining tools of the same design. There can be no V / ertauechung the VBrerbeitungsuerkzBuge happen again · The belt drive of the spindles, the heating is extremely minimized during dee operation and Gbrigan di ^r J is Auedehnung dee box by three screws not so large that any heat expansion occurring Aich detrimental to could affect machining accuracy. Drilling and milling units can be arranged in any number in a row one behind the other, so that holes of any length

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reihan can be generated with it. SIs can also be in very be arranged side by side in order to achieve to generate a wide variety of drilling patterns on one surface. It is of course possible to use the different spindles you use different tools or one or the other spindle without tools to be used when the type of Bahrbild requires it.

It must also be seen as a disadvantage that the construction the known so-called dowel hole drilling machines is very expensive. In this context it is stated that that in order to drill a side wall of a kitchen cupboard, up to six supports with two drilling units each are required be, each of the drilling units a drilling gear with nine drilling spindles. Oa now only about 16 drilling spindles are equipped with drills, 92 drilling spindles run under load - without a drill. Due to the large number of drilling spindles, there is a relatively high level of wear on bearings and gearwheels. The other In order to bring the bores to the desired spacing, six LBngs- and twelve fluervar-btellungen are executed. This results in a very long set-up time and a great risk of single-item accuracy, since reading errors on the measuring scales cannot be ruled out.,

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The applicant has the knowledge of the indicated Disadvantages now set the task to improve the area of DDbelloch drilling machines by a further Enrich execution, being this type of execution shows a number of advantages over the known, which will be explained later will.

The task set is thereby carried out according to the innovation solved that a separate hühsnverstellbaren in the machine frame Support frame with guide rails running parallel on both sides to accommodate separate ones Drilling templates arranged iBt, with each of the drilling templates a number of drilling spindles, corresponding to the bores to be ordered in the workpiece and each of the drilling spindles at its lower end for the common drive via electric motor and toothed belt od. The like. Each has a gear wheel or similar auxiliary means.

A wBitareB characteristic of the innovation is to be seen that in the machine frame a pneumatic od. hydraulic lifting device acting on both ends of the support frame is arranged, which is the seamless Height adjustment of the support frame? serves.

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The electric motor for driving the drilling spindles is iet using a Klinkenverechluseee and one with the drilling template feet connected drive bell with the template interchangeably connected. Any drilling template shows a corresponding number of clamping bushes for holding the individual drilling spindles known type.

DiB two guide rails connected to the support frame uiBisen for locking the with drilling spindles and motor completed drilling template feet programmed cams, index bolts or similar elements

The drilling template has the two guide rails on the underside adapted support brackets or the like. Dbb weather can be found on the underside of the drilling template Help facilities extending at right angles to the support frames, serve.

Ultimately, it should be admonished that the Bohrscheblone show left as well as right drilling patterns can and consists of plywood, aluminum or plastic.

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The following description is intended to explain the situation New Hungary counteratandaa, of which an AuafQhrungabelapial iat shown in the drawings, here shows:

Fig. 1 is a side view; Fig. 2 is a partial front view;

Flg. 3 the drilling template seen from below

and

FIG. K shows a side view of the drilling template according to FIG. 3.

In FIGS. 1 and 2, the machine frame known in the art is denoted by 1. A separate support frame 2 is introduced into this machine frame 1. For the atufenloee raising and lowering of this support frame 2, a lifting device 9 is provided in the machine frame 1 which engages the support frame 2 with suitable auxiliary means. In the upper area of the support frame, formed as a cabbage profile, there is a parallel pair of guide rails 3. This pair of guides 3 is used to accommodate drilling templates k. To ensure proper guidance and support of the drilling templates k on the guide rails 3, so-called support brackets k are provided on the underside of the drilling template k on the back side, cf. FIGS. 3 and k.

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ClBde of the drilling templates ι », made of plywood, Aluminum, plastic or the like material is equipped with a corresponding number of drilling spindles 5, which are held by means of known clamping bushes. The drilling spindles 5 show at the lower end B for their common Drive a gear wheel B or the like and are tied on both sides via a wire several B (n) belts 7 by looping around the adder past the gears θ or Shnl. Aids from one or more engines (en) 6 driven.

The motors 6 are each placed interchangeably on a so-called drive bell by means of a ratchet mechanism BBS, the same being firmly connected to the drilling template k . Accordingly, the costs of the motors for the drilling templates k that are not required in each case are eliminated.

Depending on the size of the cabinet parts to be drilled or the like. one or more drilling templates complete with drilling spindles 5 and motor 6 are placed on the guide rails 3 of the support frame 2 pushed on and of permanently programmed Neck or index bolt locked · As Aids this locking process a bind on the

Underside of the relevant drilling template k set-up

2 2

gen k , with these devices U running at right angles to the support frames.

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After the engine bzu. the motors 6 is / are connected to the corresponding supply line of an energy supply, the dowel hole drilling machine is ready for operation, since no adjustment work is necessary with regard to the drilling patterns. For the drilling process itself, the support frame 2 with the drilling template k QbBr on top of the lifting device 9 is continuously raised and lowered at the given time. While the workpieces are being bored, they are held on a table 1D of the machine frame 1 by means of a hydraulically or pneumatically actuated hold-down device 11. This hold-down device 11 is suspended in the cross-head 1 of the machine frame 1 or can be pushed.

The dowel hole drilling machine, as described above, brings The advantages listed below over the familiar with itself, namely:

1. Rings set-up time;

2. The drilling template ensures a precise fit there was drilling, since manual setting errors are not possible.

3. Low material wear, as always only rotate a lot of drilling spindles to drill holes in the workpiece.

k. The next drilling template to be used can be equipped with drilling spindles while the dBr machine is running.

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5. Both left and right drilling patterns can be accommodated in a drilling template eels

6. Low connection to the machine bzu. low energy consumption, dB malet The drilling spindles only have a few motors drive.

7. Uncomplicated control, since the machine only has a solenoid valve for the vertical hub of the support frame
owns.

β. Little maintenance and care service the dowel hole drilling machine in its entirety.

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Claims (1)

1. Dowel hole drilling machine, consisting of a machine frame with a multitude by one or more Motors and medium-driven drilling spindles, characterized by a machine frame (1) with a separate height-adjustable support frame (2) with guide rails running parallel on both sides (3) with a separate receipt template (O, with a Multiple drilling spindles (5), corresponding to the ones to be created Holes in the workpiece, each of which at its lower end for the common drive via an electric motor (6) and toothed belt (7) or the like. Has a separate toothed wheel (B). 2. Dowel hole drilling machine according to claim 1, characterized in that the machine frame (1) a pneumatic or hydraulic lifting device (9) acting on both ends of the support arm (2) for the stepless height adjustment of the support frame (2). 3. Dowel hole drilling machine according to claim 1 _f dadu rch gekennzeichne-t that each of the electric motors C6) for driving the individual drilling spindles using a latch lock and a with the drilling template (Λ) firmly connected drive bell with the drilling template (<+) exchangeable connected is. - 12 - 7536478 04/22/76 * * It U. Dübellach-BnhrmBBChinB according to claims 1 and 3, characterized in that the drilling template (U) for holding the individual Drilling spindles (5) have a number of clamping bushes of known type. 5. Dowel hole drilling machine according to dBn claims 1, 3 and U, characterized in that the guide rails (3) on both sides on the support frame (2) for diB locking of the Bahr template (U) quirks completed with drilling spindles (5) and motor (6) or. Have courtiers. S. dowel hole drilling machine according to claims 1, 3 to 5, that the drilling template (U) the guide rails (3) adapted support frames (U) or. The like. Has. 7. dowel hole drilling machine according to claims 1, 3 to 6, characterized in that the Drilling template (U) made of plywood, aluminum, plastic or a similar material. - 13 - 7536478 04/22/76