DE1678588A1 - Rasp with shaft for clamping in a drive machine - Google Patents

Description

PATENT AWAY

HOHENZOLLERNRING 2-10 (CONCORDIAHAUS) - TELEPHONE 212593

18ο Mar * 1968 ZS 683

Carl Zenseso Remscheid-Haddenbach

Rasp with shaft for clamping in a drive machine

The invention relates rasps having a shaft for turning _m tension in a driving machine "as they are known in manifold Auaführungsformen" The invention in particular the rasps of the type called "the concerned have a disc- or plate-shaped rasp which is provided on Colander end side with rasp i-st and possibly also on his AuQenura catcher can have rasp cuts ο

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Pearly rasps can be used to drill so-called blind holes »i.e. more or less deep holes with a circular cross-section and a flat, circular base in wood or similar materials. However, the previous disc rasps are not particularly suitable for such a purpose, because above all they are not right It is possible to eject the rasped material from the borehole while drilling, so that the work must be continuously interrupted in short periods of time in order to eliminate the Eaapelapäne

These deficiencies and problems are to be solved by the invention in the first place and, moreover, a rasp to be created, also in relation to the special drills, which are particularly known for the production of such holes, has advantages _o The invention provides for this purpose at a Reel of the type mentioned with a shaft for clamping in a drive machine and a disc-shaped or plate-shaped rasp body, which is provided with a rasp cut on its end face, that ejection openings in the rasp body

for the chips ripped off on the face, which are preferably radial, from the outer circumference to

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approximately in the middle of the disc-shaped reel body Reaching slots are formed o The slot plane should be opposite to the disc plane of the rasp body Have an incline of less than 90 °. In which Hegel becomes you get by with three slots ο

A rasp body does not need on the to be provided with a reel cut across the entire face; % t is sufficient if immediately behind in the direction of movement rasp teeth attached to each slot of the rasp body are, which are then designed two-way in the form of the so-called pocket cut. It is recommended that that the individual teeth on the different slots compared to the teeth on other slots in a radial direction Direction are arranged offset.

Can on the circumference of the disc-shaped rasp body one also provide a narrow rib that extends over the face into one of the height of the rasping cream on the face corresponding extent protrudes and which in turn is provided with a file cut to run in the radial direction but can alternate in one or the other direction with respect to the radius be inclined. In this way, an extremely smooth cut can be made without great resistance and thus power requirements

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o To make the rasp easier to use for freehand use ₉ a centering point can be provided in the middle of the face of the disc-shaped rasp body, which protrudes a small amount over the height of the rasp teeth and for easier pressing into the material in the form of a three "or more-sided pyramids can be formed",

The invention allows for a variety of possible embodiments "A preferred embodiment of a rasp according to the invention is shown in the drawing as an example" _? namely shows

Figo 1 shows the rasp in elevation and

Fig «2 is a view of the end face of the Raepelkörperso

In the illustrated Ausführungebeispiel is assumed that a rasp ₀ which has a disk-shaped rasp 11, the «clamp is provided in a drive machine _o The connection between shaft 12 and rasp 11 is reinforced by a cylindrical thickening 13 of the shank" having a shank 12 for Sin

In the rasp body 11 "which has the shape of a circular disk ₉ three slots H ₉ 15 and 16 are made, which are inclined with respect to the plane of the disk". The plane of the slot closes with the plane of the disk

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of the rasp body an angle which is smaller than 90 ° ρ 80 that the reel chips produced are deflected outward when the disc moves 151 or 161 attached »which protrude slightly beyond the end face 111 of the disc-shaped ear body. This werdenο _c rasp teeth which are mounted prior to the mounting of the slots 14 ₉ 15 and 16 8ollten _{0 g} are arranged offset in the radial direction to each other so that the entire circular area is swept over completely at work and scored short chips

A narrow rib 17 is attached to the circumference of the disk-shaped rasp body " which protrudes about as far over the end face 111 of the disk 11" as the rasp teeth 14I ₉ 151 "161 are high" be attached in the radial direction or be inclined in relation to the radial direction _{P, in} which case the inclination around the circumference can be the same for all teeth or alternate in one direction or the other with respect to the radius Teeth, for example, all slightly offset outwards or alternately inwards and outwards _p which is suitable for that

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Free cutting of the tool has a beneficial effect and thus the power requirement is reduced. So that the rasp works, i.e. » especially before the disc-shaped rasp body 11 is sufficiently deep into the material has penetrated, itself leads, a centering point 18 in the form of a three-sided pyramid is arranged in the middle of the end face 111, the tip of which has a slight The amount protrudes beyond the height of the rasp teeth on the face

The invention is of course not limited to the illustrated embodiment. For example, the center point can be four-sided or multi-sided Pyramid or even in the shape of the screw tip of the known wood drill. Also can instead of the three ejection slots 14, 15 and 16 four Slots or even more can be provided. Finally, instead of narrow ejection slots, sector-shaped openings can also be provided, which are generally extreme cases could be made so large that only narrow circular disk strips remain between them carry the rasp teeth 141, 151 and 161 and each a short piece of circumferential rib 17 with file cut 171

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Claims (8)

PATENT Attorney DIPL-ING. QUADS HOHENZOLIE «N« ING 2-10 (CONCOROIAHAUS) - TELEPHONE 212593 _KDlN 18th March 1968 ZS 683 Carl Zensee Expectations 1 J rasp with shaft for clamping in a drive machine and a disc-shaped or plate-shaped one Rasp body which is provided with a reel cut on its front side, characterized in that ejector openings are provided in the rasp body for the chips ripped off on the front side. 2. rasp according to claim 1, characterized in that that the ejection openings as radial, from the outer circumference to approximately the middle of the disc-shaped rasp body Reaching slits are formed 3. Rasp according to claim 1 or 2, characterized in that the slot plane or axis of the opening has an inclination of less than 90 ° with respect to the disc plane of the rasp body 4. rasp according to claim 2 or 3 «characterized in that three Schlitse are provided 109850/0021 5. Rasp according to one or more of claims 1 to 4f, characterized in that the rasp teeth on the Face of the rasp body only in the direction of movement are arranged immediately behind each slot 6. Rasp according to claim 5 # characterized « that the rasp teeth adjoining the slots are designed in the form of the so-called pocket cut ο 7ο rasp according to claim 5 or 6, characterized in that that the individual teeth on the different slots opposite the teeth on other slots in are arranged offset in the radial direction o 8. Rasp according to one or more of claims 1 to 7, characterized in that a narrow rib is provided on the circumference of the disc-shaped rasp body, which protrudes over the end face in an extent corresponding to the height of the rasp teeth on the end face and is in turn provided with a file cut _e 9 · Rasp according to claim 8, characterized in that the file cut is opposite to the radius on the individual Places alternately inclined in one direction or the other =, 5 - 109850/0021 10ο rasp according to one or more of the claims to 9, characterized »that in the middle of the end face of the disc-shaped Baapel body a centering point is provided, which protrudes a small amount over the height of the rasp teeth and in the form of a three- or multi-sided pyramid formed iato 109850/0021 IO Blank page