DE8022742U1 - ADJUSTABLE DEPTH STOP FOR DRILLING DEVICES - Google Patents

Description

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VJRUPE ΓELLMANN Dipl.-Chem. G. Bühling

- 3 - Dipl.-Ing. R. Kinne

Dipl.-Ing. R Group Dipl.-Ing. B. Pellmann

Bavariaring 4, Postfach 202403 8000 Munich 2

"Tel.:089-5396 53 ν

Telex: 5-24 845 ti pat

cable: Germaniapatent Munich ^

DE 0617 ',

Wolfgang Barth

724 Horb / Neckar

Adjustable depth stop for

Drilling equipment

The invention relates to an adjustable depth stop for drilling devices.

A conventional depth stop for drilling devices is available as one on the drilling device by means of a Clamp ring attached, fixed rod executed, which runs parallel to the drill at a given distance. Because of this parallel offset between However, it is very difficult for the drill and depth stop rod to set the depth stop precisely to a desired drill hole depth adjustable because the distance between the depth stop face and the perpendicular to the drill, which is difficult to measure and the plane running through the drill bit determines the drilling depth. Furthermore, the workpiece in the the hole is to be drilled, have a flat surface so that the attachment point for the drill and the point of impact of the depth stop in the same, perpendicular to the Drill center line lying plane. at

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Deulscho Bank (Munich) KIo 51/61070 Dresdner BaRh (Munoden ^ KIo. 3ΘΒ8 844, '' Postscheck (Munich) KIo. 670-43-B04

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• j workpieces that do not meet these requirements, the well-known depth stop cannot be used.

The invention is therefore based on the object c an adjustable depth stop for drilling devices to create, with which a desired drill hole depth can be set exactly and which can be used almost anywhere leaves.

IQ This task is identified with the Part of claim 1 mentioned features solved.

Due to the design of the depth stop as two half-shells that can be screwed together, one centric installation of the depth stop on the respective desired drill, even with different drill diameters ensured so that the depth stop can be used for different drill diameters without that imbalance problems occur.

The fact that the two half-shells can be screwed together enables quick and safe assembly of the depth stop at the desired drill point.

Because the depth stop is attached directly to the drill it is also used when drilling holes in workpieces with a curved, ζ. Β. round surface usable.

When using the depth stop when working with easily damaged workpieces, e.g. soft wood or a coated plate, the end face of the depth stop facing the workpiece can advantageously with a soft material, e.g. B. felt, be protected. The depth stop preferably consists of

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Metal, but can also be made of lightweight plastic or other material. The inventive Depth stop is for both twist drills and wood twist drills as well as for masonry drills.

Further advantageous refinements of the invention are specified in the subclaims.

The invention is described below using an Aus-IQ management example explained in more detail with reference to the drawing.

Show it:

Fig. 1 is an oblique view of one on one

Drill mounted depth stop;

FIG. 2 shows a plan view of a half-shell of the depth stop according to FIG. 1; FIG. and Fig. 3 is a side view of the half-shell .according to Fig.2.

Fig. 1 shows a mounted on a drill 3 depth stop, which consists of two identical, semi-cylindrical Half-shells 1 and two screws 2 consists. The end face facing the tip of the drill 3 of the depth stop is flat.

2 and 3 show a plan view and a side view of a half-shell 1. If the radius of curvature r .. is an inner rounding 4 z. B. 1.5 mm, a drill fits with a Diameter of 3 mm exactly to the inner rounding 4, so that the depth stop is symmetrical to the drill center line is aligned. If drills with a larger diameter are used, the depth stop is located

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with the four edges 5 of the inner roundings 4 on the

Drill and is therefore also symmetrical to the drill center line oriented. This constant symmetrical alignment of the depth stop ensures that c that no unbalance problems occur even when using drills with different diameters. Should he Depth stop for drills with an even smaller diameter than z. B. 3 mm can be used, a corresponding smaller radius of curvature r .. of the inner rounding 4 ge-IQ elects.

The inner rounding can either be a semicircle or a section of a circle or with a different, z. B. be executed elliptical curvature. But you can also in a further embodiment with flat, executed at an angle abutting boundary surfaces be that z. B. result in the production of the inner rounding 4 by means of milling.

The curvature or the maximum depth of the inner rounding 4 determines the diameter of the smallest drill that can still be used and is therefore suitably small to be selected, but still large enough to ensure that larger drill bits are securely held by means of the edges 5. The diameter of the largest usable drill is determined by the distance between the two bores 6 and 7. The distance between the two bores minus the two bore diameters is 8 mm in the embodiment described, so that the depth stop described with an inner radius of curvature r ~ of 1 .5 mm can be used for drills with a diameter of 3 mm to 8 mm. However, any other dimensioning is also conceivable.

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The outer rounding 8 of the half-shell 1 is preferably circular; however, it can also, for. B. have a rectangular appearance.

The bore 7 has an internal thread and, in the assembled state, is aligned with the continuous one Hole 6 in the other half-shell. The hole 6 can point to the outside during assembly Side be milled so that a flat surface is formed for the screw head to rest on. To screw together Allen screws are preferably used in this case. In another embodiment, the The hole must be countersunk on the side facing outwards, so that when using countersunk head screws the position of the two half-shells to each other is precisely adjusted by itself.

In summary, a depth stop that can be used for all types of drills is created which is based on its design is centered on the respective drill itself and can be adjusted easily, quickly and precisely is.

Claims (7)

TlEDTKE- BüHLINÖ :: -: Kw ^ :. . ;; .. ". ÄdiiÄ Z GrUPP - P E LIlMANN '" "··' ·. ■" .. 'Dipl.-lng. H. Tiedtke VSRUPE r ELLMANN Dipl.-Chem. G. Bühling Dipl.-Ing. R. Kinne Dipl.-Ing. R Group Dipl.-Ing. B. Pellmann Bavariaring 4, Postfach 202403 8000 Munich 2 Tel .: 0 89-5396 53 Telex: 5-24845 tipat cable: Germaniapatent Munich DE 0617 Protection claims 1.Adjustable depth stop for drilling equipment, characterized by two at the desired location of a drill clamped in the drilling device (3) half-shells that can be attached and screwed together (1), whose end face facing the drill bit is flat in the attached state. 2. Depth stop according to claim 1, characterized in that the two half-shells (1) are identical. 3. depth stop according to claim 1 or 2, characterized characterized in that the half-shells (1) have a semicircular cross-section. 4. depth stop according to claim 3, characterized in that the outer radius of curvature of the half-shells (1) 10 mm and the inner radius of curvature is 1.5 mm. 5. depth stop according to one of claims 1 to 4, characterized in that the half-shells (1) from Made of metal. 6. depth stop according to one of claims 1 to 5, characterized in that the half-shells (1) on Deutsche Bank (Munich) Account 51/61070 Dresdner BanKjMüiieheiJWq. 39306 * 1 _# post check (Munich) account 670-43-804 - 2 - DE 0617 the flat face are coated with a soft material. 7. depth stop according to claim 6, characterized in that felt is used as the soft material will.