DE8234524U1 - GRINDING MACHINE - Google Patents

Description

DiPL.-ING. H. PINK PATENTANWALT · HINDENBURQSTRASSE 44 · D 7300 ESSLINQEN NEAR STUTTGART

Pltenanwalt FINK ■ PotHich W ■ D TWO Eilllngw (N ** »f)

-3- November 9, 1982 By

Gm 5842

Friedr. Dick GmbH, Kollwitzstrasse 1, 7300 Esslingen (Neckar)

"Grinding machine"

The invention relates to a grinding machine according to Preamble of claim 1.

In a known grinding machine of the aforementioned type, the guide member is Plate-shaped and arranged directly above the shaft of the grinding wheel. The guide member is on a pivot lever attached, which can be adjusted by means of an adjusting screw (DE-GM 71 45 272).

It is also known to mount and pivot the guide member itself to make adjustable by means of an adjusting screw (DE-OS 25 43 718).

The present application is based on the task of safe guidance for the device to be sharpened, especially knives. This object is achieved by the features in the characterizing part of claim 1 solved according to the invention. The force exerted by the permanent magnet on the blade-shaped part of the device to be ground seeks this part to hold on to the guide surface, thereby ensuring safe guidance of the device is reached at a predetermined position. When the blade-shaped part to be ground is placed on the guide surface, the desired Cross-section of the cutting edge reached.

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-4- November 9, 1982 By

Gm 5842

From DE-GM 74 40 484 a grinding machine is known in the contact surface of which a permanent magnet is embedded in such a way that its bottom surface is flush with the support. The support surface runs hereby parallel to the axis of the grinding wheel. The arrangement of a permanent magnet in the above-described edition has not proven itself in practice.

Further advantages emerge from the remaining claims and the description and the drawing. In this part of a grinding machine is shown schematically as an embodiment of the subject matter of the invention. Show it

Fig. 1 A front view,

Fig. 2 is a plan view,

Fig. 3 is a section along line HI-III in Fig. 2,

Fig. 4 is a partial side view.

A grinding wheel 1 which tapers outwards on its rim is on each of its two sides is provided with a conical surface 2 or 2a. It is on a shaft 3 that can be driven by means of a motor (not shown) non-rotatably attached. The shaft 3 is rotatably mounted in laterally arranged bearings 4 and 4a, which are attached to a housing 5, which in Plan view is rectangular and U-shaped in vertical section.

The conical surface 2 is assigned a guide surface 6, which is located on a disc-shaped permanent magnet 7 is located (Fig. 3). The permanent magnet 7 is fixed in a cup-shaped receiving body 8, the The edges reach up to the guide surface 6. The receiving body 8 is connected to a threaded spindle 10 with a pin 9 attached centrally to it attached, which is mounted adjustably in a holding body 11 attached to the housing 5. To set the threaded spindle 10 is a provided with a handle 12, designed as a cap nut lock nut 13, which is on the side facing away from the permanent magnet 7 of the Holding body 11 is arranged.

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'-5- November 9, 1982 By

Gm 5842

The location 14 of the receiving body 8 closest to the grinding wheel 1 or of the permanent magnet 7, if the receiving body 8 does not reach as far as the guide surface 6, is located at such a distance from the Grinding wheel 1 so that it is not at point 14 during operation

'strikes. The tangential plane to the grinding wheel 1 at the point

14 of the receiving body 8 adjacent point of the grinding wheel 1 and the planes determined by the guide surface 6 intersect in a surface line of the conical surface that intersects the axis of the grinding wheel 1 Seen in the direction of this surface line, the two planes form an angle / of 10 ° to 30 °, in particular of 20 ° (FIG. 3). Position 14 is seen in the direction of arrow A in Figure 3, which shows the rotary

; the direction of the grinding wheel 1, at an angle of 25 ° to 45 °,

especially 35 °, to the horizontal (Fig. 4, in which only the grinding wheel 1 and the guide surface 6 is shown in dash-dotted lines).

As FIGS. 1 and 2 show, the conical surface 2a is also a guide surface 6a associated with a magnet, which is located in a receiving body 8a is located. The above statements in connection with the guide surface 6 apply accordingly.

To sharpen a knife, it is handled with the handle of the knife. ; adjacent cutting end in the hollow wedge between the conical surface 2 of the

Grinding wheel 1 and the guide surface 6 of the permanent magnet 7 used, the blade rests against the permanent magnet 7. By pulling away from the grinding wheel 1, the cutting edge • Sharpened the knife. If this has a curved end, the

ν Knife handle moved slightly upwards at the end of the grinding process. the

Chip removal during the grinding process is determined by the force with which the m of the knife blade during the grinding process down

S is pressed. So that the knife edge has the same width on both sides

'ß _: Cutting phase is achieved, the knife blade is in the aforementioned manner

^ also ground on the conical surface 2a of the grinding wheel 1, whereby

the blade rests against the guide surface 6a.

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-6- November 9th 19S2 By

Gm 5842

The blade of the knife to be sharpened during the sharpening process on the guide surface 6 of the permanent magnet 7 or on the guide surface 6a of the permanent magnet 7a and takes a clear Position to the grinding wheel 1, so that the blade of a knife can be sharpened in a simple manner even by an inexperienced person. By placing the blade to be ground against the guide surface 6 or 6a, an exact cutting edge geometry is maintained.

If, after various grinding operations, the point 14 is too far from the The grinding wheel 1 is removed, the guide surface 6 or 6a can be readjusted. A readjustment is also possible when grinding another, a blade having a device as a knife possible.

Claims (5)

a a «• a a a · a a a · DIPL-ING. H. FINK PATENTANWALT · HINDENBURGSTRASSE 44 ■ D 7300 ESSLINGEN NEAR STUTTGART ff Patent attorney FINK ■ Po «tfecti527 · D 7300 EttHngan (Neckar) November 9, 1982 By Gm 5842 Friedr. Dick GmbH, Kollwitzstraße 1, 7300 Esslingen (Neckar) claims for protection 1. Grinding machine with a drivable grinding wheel (1), with one that can be adjusted to the grinding wheel and for guiding a blade-shaped one Part of a cutting device, in particular a knife, serving guide member (6, 7), the one facing the grinding wheel Guide surface (6) on the face of the grinding wheel and is arranged inclined to the axis, characterized in that that the guide surface is at least partially the side surface of a permanent magnet (7) fixed in the guide member. 2. Grinding machine according to claim 1, characterized in that that the point (14) of the guide surface (6) closest to the grinding wheel (1) is in a radial line to the axis of the grinding wheel (1) is at an angle (oil) of 25 ° to 45 °, especially 35 °, to the horizontal and above the shaft (3) of the grinding wheel (1) is arranged in a region of this grinding wheel which moves from bottom to top (Fig. 4). 3. Grinding machine according to claim 1 or 2, characterized in that the intersection of the planes through the guide surface (6) and through the tangential plane to which the Fühmn ^ sfläche nearest part of the conical surface (2) of the grinding wheel (1) are determined on one of the axis of the grinding wheel intersecting -2- November 9, 1982 By Gm 5842 Surface line lies and that, seen in the direction of this surface line, the upwardly open angle {0) between the guide surface (6) and this tangential surface is 10 ° to 30 °, in particular 20 °. 4. Grinding machine according to one of the preceding claims, characterized in that the permanent magnet (7) is disc-shaped and in its pot-shaped receiving body (8)
is attached, the edge of which includes the permanent magnet on its circumference and extends to the guide surface (6). 5. Grinding machine according to one of the preceding claims, characterized in that the guide member (6, 7) on one
The end of a threaded spindle (10) is arranged in a
a housing (5) arranged holding body (11) is adjustably mounted. -3-