DE8006414U1 - KNIFE HOLDER FOR KNIFE SHAFTS OR KNIFE HEADS - Google Patents

Description

.'- JSf ΑΤΈ Ν.ΤΆMWäLt] E _: * * _: DR.- ING. HH Wl Lufi-llM * - " ¹ D l'pLVl NG. H. DAUSTE

D-7000 STUTTGART 1 - GYMNASIUMSTRASSE 31B - TELEPHONE (07 11) 29

- 3 -

Applicant;

Eugen Lutz GmbH + Co. Machine factory

713Ο Mühlacker - Lomersheim

March ⁷ 198C

Dr. W / m

Knife holder for knife shafts or knife heads

The innovation concerns a knife holder for knife shafts or knife heads with reversible knives that are radially adjustable Knife carriers in the form of drawn profile parts against guide shoulders of the knife shafts or cutter heads can be pressed, the knife carriers being provided with a reinforcing bead protruding in the direction of the guide shoulders.

Knife holders of this type are known (DE-OS 27 51 903) In the known designs, drawn profile parts are provided as pressure pieces and knife carriers, which in one there Embodiment shown directly with bores for adjustable and radially adjustable approximately in the circumferential direction Screws are provided with which the radial adjustment of the position of the cutting knife and the fuse in the circumferential direction be made. The knife carriers are for this purpose against the knife and against the guide shoulders in pressed against the cutter heads, a bead protruding against the guide shoulder contributing to an excessive deformation to prevent the knife carrier and thrust pieces by

that this reinforcing bead attaches itself to the guide t

shoulders. With the known types, only ί

Small reversible knives are to be clamped. If larger ones are to be clamped:

Cutting knives, "for example profiled cutting knives, |

are used, a separate adjustment must be made

must be taken and separate pressure pieces must be manufactured |

will. §

The task of the innovation is therefore to provide a knife holder for the | to be trained at the beginning so that with a and
the same pressure piece, small reversible knives, but also large ones
Cutting knife can be clamped.

The innovation is that in addition to the reinforcing bead;

one parallel on the radially inward side

to this running groove provided in the knife carrier \

is. This embodiment has the advantage that the _;

profile pieces designed in this way can be used once for this \

can use small reversible knives, which is advantageous

is achieved in that a guide rib in the groove

a retaining plate is inserted between the guide

shoulder and the knife and therefore the distance

bridged between knife carrier and guide shoulder, the

adhered to when clamping a large cutting knife

must become. The retaining plate can with a further,;

Be provided with a guide rib, which is in a groove of the turning

knife intervenes. :

But it is also possible to clamp a larger cutting knife directly, including on the radially inward side of the groove and on the radially outside of the
Reinforcing bead lying side of the knife carrier contact surfaces for a with a groove on the reinforcing bead
guidable knife are provided.

The reinforcing bead in the one designed according to the invention The knife carrier and profile piece are therefore not used, as in the known design, for reinforcement or as a stop for the Be-P limitation of deflections. Rather, it serves to directly guide the radial guidance of a large cutting knife | i to take over, whereby it is on both sides in guide surfaces for If. this passes. Forms for clamping small vender knives

£ one side of the reinforcement bead at the same time § Wall for the groove, in which in turn the retaining plate for |; the reversible knife is inserted.

; '^; It is also particularly advantageous that these profile pieces! and knife carriers for the case that large cutting knives, especially those with profiling, are to be clamped, can also be provided with axially extending grooves for anchoring webs of a form-fitting attachable chip thickness limiter, which can be sprayed on in a particularly simple manner.

In the drawings, an embodiment of the innovation for the various applications is shown and in explained in the following description. Show it:

Λ a schematic side view of a part of a cutter head in the area of the clamping point of a profiled cutting knife,

FIG. 2 shows the schematic view of the chip thickness limiter of FIG. 1, approximately in the circumferential direction according to FIG Arrow II seen and

3 shows a side view similar to FIG. 1, but in an enlarged manner Representation and use of the knife carrier of FIG. 1 for clamping a reversible knife.

U *

In Figures 1 and 2, a drawn profile, for example made of a special metal alloy knife carrier 1 is shown, which is inserted in a recess 2 of a knife head 3 and is used to clamp a cutting knife M , which is on a guide shoulder inclined to the radial direction 5 is pressed. As can be seen from the dash-dotted line 6 in FIG. 2, the outer contour 6 of the cutting knife M is corrugated, so that woodworking can be carried out with it, for example, which leaves a special pattern on the surface. The cutting knife M- is pressed against the guide shoulder 5 in that the knife carrier 1 is acted upon by a pressure screw 7 which presses it against the guide shoulder 5 and thus also against the cutting knife M-. For the radial adjustment of the position of the cutting knife M , a reinforcing bead 8 is provided, which runs in the axial direction of the knife head 3 and which engages in a corresponding groove 9 in the cutting knife. With the aid of a radially extending adjusting screw 10, the position of the cutting edge 6 of the knife M- can therefore be adjusted as long as the pressure screw 7 is still loosened. When this setting has been made, the pressure screw is tightened and the position of the cutting knife M- is fixed. In order to ensure the perfect position and to press the entire rear surface of the cutting knife M onto the guide shoulder 5, contact surfaces 11 are provided on both sides of the reinforcing bead 8 and run parallel to the guide shoulder. Next to the reinforcing bead 8, a hat is arranged on the radially inward side, the function of which will be explained later. In the exemplary embodiment of FIGS. 1 and 2, it serves, among other things, to properly separate the radially inner contact surface 11 from the reinforcing bead 8, which achieves a smaller courage 13 on the radially outwardly located side of the reinforcing bead 8.

A chip thickness limiter is positively connected to the knife carrier 1 14 · placed, which is provided with two outer anchoring webs 15, which between them a dovetail-shaped "Form recess" into which a dovetail-shaped Web 16 is inserted, which is produced on the knife carrier 1 in that either subsequently or when pulling the profile 1 corresponding hats 17 are drawn in.

In Fig. 3, the knife carrier 1 of FIG. 1, which in this Case not necessarily to be provided with the hats 17 needs to be assigned a holding plate 18 which is provided with a guide rib 19 which engages in the groove 12 and thus ensures that the retaining plate 18 is guided radially. The holding plate 18 is equipped with a further guide rib 20, which is in a semicircular groove 21 of a small Vendesessers 22 engages, which is clamped between the contact surface 11 of the knife carrier 1 and the holding plate 18 is. In this case, too, the radial adjustment takes place as on the basis of the exemplary embodiment in FIG. 1 described. It can be seen that one and the same knife carrier 1 is used for two different clamping processes can be, whereby it is only assigned a holding plate when small reversible knives are clamped should. The innovation therefore has the advantage that universally usable knife carriers in the form of drawn Profiles can be provided.

Claims (3)

Expectations 1. Knife holder for knife shafts or knife heads with reversible knives, which are countered by radially adjustable knife carriers in the form of drawn profile parts Guide shoulders of the knife shafts or knife heads can be pressed, the knife carrier with an in Direction to the guide shoulders protruding reinforcing bead are provided, characterized in that in addition to the reinforcement bead (8) on the radially inward side there is a parallel to this Groove (12) is provided in the knife carrier (1). 2. Knife holder according to claim 1, characterized in that a guide rib (19) of a holding plate in the groove (12) (18) is used, which sits between the guide shoulder (5) and the knife (22). 3. Knife holder according to claims 1 and 2, characterized in that that the retaining plate (18) is provided with a further guide rib (20) which is inserted into a groove (21) of the knife (22) engages. - 2 - Knife holder according to claim 1, characterized in that that on the radially inward side of the groove (12) and on the radially outside of the reinforcing bead (8) lying side of the knife carrier (1) contact surfaces (11) for one with a groove (9) on the reinforcing bead (8) guidable knife (4-) are provided. Knife holder according to claim 4, characterized in that the knife carriers (1) have axially extending grooves (1?) for anchoring webs (15) of a positively attached Chip thickness limiter (14) are provided. Knife holder according to claims 4- and 5i, characterized in that that the chip thickness limiter (14) on the knife carrier (1) is sprayed on.