DE7342938U - Face cutter head - Google Patents

Description

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V / Erkzeuprr.aschineni'abrik Oerliiior.-Eührle AC-

δ03ΰ Zurich

S tirriir.es ο er kep f

The invention relates to a face cutter head for gear cutting machines with a disc-shaped green body, eggs Has grooves for receiving knives, which knives in the Grooves are displaceable, with a surrounding the base body, Opened ring, which has screws for clamping the knife in the receiving rake, the axes of which are crooked to the central axis'.

In a known cutter head of this type, the said although raised. However, if no preload is created, which is larger than that generated by sar.tuche screws Tension begins when you tighten the screws cer ring to stretch. The stretching of the ring can on the one hand

Loosen individual screws and, on the other hand, an imbalance can occur, so that the cutter head does not run smoothly as it rotates. Eir.e loosening of the screws can also be done by turning the rir.ges in relation to the oral cavity when the screws are tightened. It is then necessary, after all screws are tightened, to check that no screw has been loosened and the cutter head to balance. If this check is not carried out carefully, lot r.ic'nt ensures that all knives i'eot sit.

The present invention aims to obviate both of these drawbacks and to provide an apparatus in which such control of looseness is achieved by stretching and twisting the ring is not necessary and the cutter head has not been balanced afterwards must become.

The device according to the invention is characterized in that the ring is shrunk on, and that the preload in the ring is larger than that generated by tightening the screws in the ring Tension, so that the ring is pressed against the base body without play even when the screws are tightened, and that ar. scope of the face cutter head at least one screw is arranged to secure the ring against twisting against the grain.

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An embodiment of the device according to the invention is shown in the drawing and described in detail below. Show it:

Fig. I the face cutter head in a plan view; 2 shows a section along line II-II in FIG. I; FIG. 3 shows a section along line III-III in FIG.

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According to FIGS. 1 to 3, a face cutter head 1 has a disk-shaped base body 2. With the help of a central bore 3, the face cutter head 1 is in the usual way? not shown attached drive spindle of a gear cutting machine. On the outer circumference of the disk-shaped body 2 are oblique to its axis receiving grooves 5 for stick knives 6 arranged. A pretensioned ring 7 is placed on the base body 2. In the ring 7 are perpendicular to the side surfaces 10 of the bar cutters 6 screws 8.9 are available. Between the ends of the screws 8,9 and 6 stick knife are located Pressure pieces 11, which on the side surfaces 10 of the bar knife

6 are present. The distance between the side surfaces 14,15 of the printing

StUeke 11 is larger than the width of the Aufnahraenuten 5. Each

i
of the printing block 11 is held between a surface 12 of the ring 7 and a retaining ring 13 fastened to the ring 7 in a manner not shown. For this retaining ring 13 is in the Rinp

7 a recess 4 is available. The ring 7 and the base body 2 are secured against rotation by screws 16.

If the bar cutters 6 have to be reground, then the Screws 8.9 loosened and the bar knife 6 removed and after grinding in the receiving grooves 5 to the necessary Amount added. The pressure pieces 11 are axial-in secured against displacement by the flange 12 and the retaining ring 13 in both directions. This means that the distance between the side surfaces 14.15 of the pressure pieces 11 is larger than the width of the receiving grooves 5, the falling in of the pressure pieces 11

• Ji

prevented in the receiving grooves 5 if no bar cutters 6 are inserted in the receiving grooves 5.

The ring 7 is pulled onto the base body 2 when it is hot, in order to achieve a certain preload and sits on the base body 2 without play after cooling.

As a result, loosening of the already attached bar cutters 6 by fastening the adjacent bar cutters 6 is avoided.

The pressure directions of the screws 8,9 are not centric to the knife head axis. This creates a torque between the ring 7 and the base body 2 To even when excessive Tightening the screws 8, 9 to avoid twisting between the ring 7 and the base body 2 is big and number. the screws 16 selected accordingly.

In contrast to the already known face cutter heads with those arranged in a circle around the cutter head axis, they cannot be displaced attached knives enables the inventive device a displaceable attachment of the bar knife on called cutter head.

Among the advantages that more bar knives than the mentioned non-displaceable knives can be arranged on a knife head and that there is no need for a connection between the geometry of the head and the flank clearance angle, there is also the advantage in addition, that the rod teaser elongates. "can be re-grinded than the other Kesser.

Cbm

Bin · note: tick as applicable; strong jmrandeto Faldor Freilrssenl

To dai

German «Patent Office

8000 some 2 _/

ZweibrOckenitraB »12 y \ y Location · Munich

Own characters:

J, 10.21 6 A

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For the object described in the annexes (tool or utility item or (all of them) the entry in the role for Gebrsuchnmueter is requested.

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Applicant:

(First name and surname, for women also maiden name) Company and company headquarters according to commercial register entry, f lonitige designation of the applicant) In (zip code, OrI. Sir., Hous-Nr .. possibly also PuiMuu't i ~. u.i! ö .-. d; id - .: r. Orisr sud S: = c

Agent:

| Non », address with postcode, possibly also PO box ι indicate lawyers' association in accordance with the power of attorney) Werkzeugmaschinenfabrik Oerlikon-Bührle AG

CH-8050 Zurich

hi ΉΛ \ Λ \ / i UI Li

Authorized delivery agent, Delivery directives

(Name, address with postcode, possibly also PO box)

atentanwalt Dipl.-Ing. Heinz Lesser 8000 Munich 81 Cosxmastraße 81

5! 0

') Elimination from the Utility Model Application Altl.Z

Registration is a | |

The filing date for the elimination is claimed

The designation is:

(short and precise technical name det Ge ■ stand », on which the invention is based on .. nt, ObsreinsiisTKnend with the title dsr

th

no imagination!)

The foreign priority of the pre-registration is used (order: filing date, country, file number; tick box 1)

Display priority

(Order: 1st exhibition location official. Name and place of the exhibition with opening day; Tick box 2)

Face cutter head December 20th, 1972, Switzerland, No. 18587/72

The fee for the utility model registration in the amount of 30 DM j has been paid. pC j is paid. *)

A request is made to suspend for the duration of.

-Month (s) (max. 6 months from the filing date) the registration and announcement

Attachments: (The documents with a cross are attached!)

1. Another piece of this proposal

2. A description

3. A piece with _._ 4— protection claim (s)

4. A set of file drawings with —1 sheet

or two of the same model

5. A power of attorney

Please leave empty

~ "7

Gbm.Antr.

10.68 PAK F 004/48

*} Tick where applicable I

From this application and all documents Copies were retained.

- Space for revenue stamps -

(bsi Piatzmongel also use ROdaeit »)

(Patent attorney)

Claims (1)

JJ η α ρ ρ r u a h x Lxx vox ^ aixnut j ^ üi.ia shaped body, the grooves for receiving. Knives open] knows soft knives in the. Recording grooves are slidable,
ir.lt a ring drawn on the base body uir.cebencen, the
Has screws for clamping the knife in the Aufnahrr.enuten, the axes of which are oblique to the ring axis, thereby
characterized in that the ring (7) is shrunk on, and that the preload in the ring (7) is greater than the tension generated by tightening the screws (8, 9) in the ring (7), so that the ring (7 ) is pressed against the base body (2) without play even when the screws (8, 9) are tightened, and that at least one screw (16) is arranged on the circumference of the face cutter head; is to secure the ring (7) against twisting with respect to the base body (2).