EP3628459A1 - Holzschnitzer mit einer einzelmodule - Google Patents

Holzschnitzer mit einer einzelmodule Download PDF

Info

Publication number: EP3628459A1
Authority: EP; European Patent Office
Prior art keywords: cutter; knife; wood; knives; dowel
Prior art date: 2018-09-27
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP19197983.0A

Other languages

English (en)

French (fr)

Other versions

EP3628459B1 (de

Inventor

Filippo PELLITTERI

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

TWT SRL

Original Assignee

TWT SRL

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2018-09-27

Filing date

2019-09-18

Publication date

2020-04-01

2019-09-18 Application filed by TWT SRL filed Critical TWT SRL

2020-04-01 Publication of EP3628459A1 publication Critical patent/EP3628459A1/de

2022-01-19 Application granted granted Critical

2022-01-19 Publication of EP3628459B1 publication Critical patent/EP3628459B1/de

Status Active legal-status Critical Current

2039-09-18 Anticipated expiration legal-status Critical

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Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G13/00—Cutter blocks; Other rotary cutting tools
- B27G13/005—Tools composed of two or more rotating discs
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G13/00—Cutter blocks; Other rotary cutting tools
- B27G13/08—Cutter blocks; Other rotary cutting tools in the shape of disc-like members; Wood-milling cutters
- B27G13/10—Securing the cutters, e.g. by clamping collars

Definitions

the present invention generally relates to the cutters with cutting inserts for working wood or similar and it refers, more particularly, to a cutter for working wood comprising a monoblock portion.
cutters with cutting inserts also called knives
said knives are shaped according to the need and are singularly placed and fixed inside related slots formed peripherally in the body of the cutter with desired angles.
the cutter comprises a main body able to be rotated and a series of knives mounted on the periphery of the cutter body and having a substantially radial arrangement.
each of said knives is blocked in the cutter's body so as to counteract said forces and to ensure a precise and permanent arrangement of the structure; usually, each knife is removably coupled with the cutter's body at a relative slot, by means of one or more locking elements or blocks and of at least one screw, which locks the knife on a wall of said slot with pressure.
the object of the present invention is therefore to overcome the above mentioned drawbacks and, in particular, to provide a cutter for working wood, which allows performing different cutting, engraving and/or shaving operations.
Another object of the present invention is to provide a cutter for working wood, which has a reduced number of components, with respect to the prior art, and which therefore has a considerable construction economy, as well as greater precision in the processing, with respect to the known structures and techniques.
Another object of the present invention is to provide a cutter for working wood, which allows the operator to replace the knives more comfortably and quickly, even when the tool is still mounted on the machine, with respect to the known cutters.
a further object of the present invention is to provide a cutter for working wood, which has a smaller bulk and greater precision, by performing the same processing, with respect to the known cutters.
a known cutter 10 has at least two bodies 10A, 10B, preferably made of steel or aluminum alloy and preferably having a substantially cylindrical shape; the bodies 10A, 10B have a series of slots or peripheral seats 11, where respective removable tools consisting of cutting inserts or knives 12 are housed and locked.
the bodies 10A, 10B of a known cutter 10 have as many peripheral slots 11 as there are knives 12 to be used and each knife 12 is singularly fixed in a respective slot 11.
the number of knives 12 depends on the number and quality of the operations to be performed (cutting, engraving, shaving, etc.) and each knife 12 is removable from its seat by acting axially and from above, by means of a special key which acts on a respective screw locking 13; therefore, the greater are the number of knives 12 used, the greater are the complications regarding accessibility to the locking screws 13 for replacing the worn knives 12 with other new sharpened knives.
the cutter according to the present invention comprises a single body 20, which is substantially cylindrical, and one or more cutting inserts or knives 22 which are inserted in respective seats 21 formed radially in the body 20 in correspondence with an edge identified by at least two offset horizontal planes of the body 20; advantageously, the edge is identified by a horizontal plane 24 of the cutting body 20 projecting or retracting with respect to a further horizontal plane 25 of said cutting body 20 (as shown in detail in the alleged figures 2, 3 , 4, 5 and 6 ).
each knife 22 has a substantially cylindrical portion 35, which is inserted in the seat 21, and an elongated shaped portion 26 which is configured to perform different wood working operations, so that a single cutting insert or knife 22 is used to make incisions, cuts, shavings, etc.
Figures 8A, 8B, 8C, 9A and 9B show a first embodiment of a shaped cutting insert or knife 22, which is configured to perform cutting, engraving and shaving operations in wood, while figures 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H and 10I show different embodiments of the cutting insert 22 and the relative mutual positioning of said cutting insert 22 with respect to the cutter's body 20.
the knife 22 has an appendix or central wedge 27, formed between the cylindrical portion 35 and the elongated shaped portion 26, on which a block 28 abuts during the knife 22 replacement operation.
the replacement operation takes place by inserting a special key 29 inside a double-threaded grain 30, placed inside the block 28, which allows to move the block 28 and push the knife 22 out of the seat 21, thanks to the stop of the block 28 on the wedge 27 of the knife 22 (as shown in detail in the attached figures 7A and 7B , where, in particular, F1 indicates the direction of rotation of the key 29, which in turn causes the vertical movement of the knife 22, thus releasing said knife 22 from the housing 20 of the cutter's body 20).
the solution object of the present invention allows to achieve the aforementioned objects and, in particular, allows to use a single cutter body and a single insert to perform wood processing (smoothing, incisions, cuts, etc.), also allowing the cutter to work at high peripheral speeds required by the new machinery with an increase in productivity and a good finish; the cutting insert is interchangeable and has a radial fixing, so as to obtain further advantages in terms of accessibility for the operator during maintenance operations and/or replacement of the cutting inserts.

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Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Wood Science & Technology (AREA)
Forests & Forestry (AREA)
Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)

EP19197983.0A 2018-09-27 2019-09-18 Holzschnitzer mit einer einzelmodule Active EP3628459B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT201800008976		2018-09-27

Publications (2)

Publication Number	Publication Date
EP3628459A1 true EP3628459A1 (de)	2020-04-01
EP3628459B1 EP3628459B1 (de)	2022-01-19

Family

ID=64607211

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19197983.0A Active EP3628459B1 (de)	2018-09-27	2019-09-18	Holzschnitzer mit einer einzelmodule

Country Status (1)

Country	Link
EP (1)	EP3628459B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
IT202300009303A1 (it) *	2023-05-10	2024-11-10	Twt S R L	Fresa monoblocco

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1999028073A1 (en) *	1997-12-01	1999-06-10	Iscar Ltd.	Cutting insert and cutting insert holder therefor
EP1291106A2 (de) *	2001-09-06	2003-03-12	Loh Optikmaschinen AG	Verfahren und Vorrichtung zur Flächenbearbeitung von Werkstücken aus nicht-sprödharten Materialien in der Optikfertigung sowie Werkzeug dafür
US20140056659A1 (en) *	2012-08-21	2014-02-27	Iscar, Ltd.	Chamfering Cutter and Chamfering Insert Therefor

2019
- 2019-09-18 EP EP19197983.0A patent/EP3628459B1/de active Active

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1999028073A1 (en) *	1997-12-01	1999-06-10	Iscar Ltd.	Cutting insert and cutting insert holder therefor
EP1291106A2 (de) *	2001-09-06	2003-03-12	Loh Optikmaschinen AG	Verfahren und Vorrichtung zur Flächenbearbeitung von Werkstücken aus nicht-sprödharten Materialien in der Optikfertigung sowie Werkzeug dafür
US20140056659A1 (en) *	2012-08-21	2014-02-27	Iscar, Ltd.	Chamfering Cutter and Chamfering Insert Therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
IT202300009303A1 (it) *	2023-05-10	2024-11-10	Twt S R L	Fresa monoblocco
EP4461489A1 (de)	2023-05-10	2024-11-13	TWT S.r.l.	Einstückige schneide

Also Published As

Publication number	Publication date
EP3628459B1 (de)	2022-01-19

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