# US 2014/0360325 A1 · Method for producing a blank from a fiber layup

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- Number: US 2014/0360325 A1
- Document ID: US20140360325A1
- Status: Published application
- Kind: A1
- Application number: 14/255,100
- Filed: 2014-04-17
- Published: 2014-12-11
- Earliest claimed: 2013-06-06
- Assignees: GFM GmbH
- Applicants: GFM - GmbH
- Inventors: Franz HEIDLMAYER
- Web page: https://patentgrep.com/patent/US20140360325A1

## CPC

- B29C 70/545: {Perforating, cutting or machining during or after moulding}
- B26D 3/02: Bevelling
- B29C 70/302: {Details of the edges of fibre composites, e.g. edge finishing or means to avoid delamination}
- B26D 7/086: {by vibrating, e.g. ultrasonically}
- Y10T 83/0524: Plural cutting steps
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B26D: CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING (for growing crops or plants A01D, A01G; for fodder or straw A01F; for bulk butter A01J; for dough A21C; slaughtering A22B; for tobacco, cigars or cigarettes A24; marking-out, perforating or making buttonholes A41H25/00; manufacturing footwear A43D; brushmaking A46D; surgery A61B; disintegrating, mincing or shredding in general B02C; cutting wire, making pins or nails B21F, B21G; of the kind used formetal B23; cutting by abrasive fluid jets B24C5/02; hand-held cutting tools B26B; perforating, cutting-out, stamping-out or punching, or severing by means other than cutting B26F; for wood B27; for stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; article or web delivery apparatus incorporating cutting or line-perforating devices B65H35/00; for leather or upholstery B68, C14B; for glass C03B; making matches C06F; for peat C10F; for sugar C13B45/00; for textile materials D06H; civil engineering, building, mining, see Section E; for light guides G02B6/25; cutting processed photographic material G03D15/04)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method is described for producing a blank (1) from a fiber layup (5) having an edge (3) forming a chamfer (2), wherein the fiber layup (5), which is suctioned onto a cutting support (6) of a cutting table (7), is cut through using a contour cut (17), which extends into the cutting support (6), along the intended contour (4) of the blank (1) and is provided with the chamfer (2) using a chamfer cut (16) running at a flat chamfer angle (α) along the intended contour (4). To provide advantageous production conditions, it is proposed that the fiber layup (5) is firstly precut by two cuts, which end above the cutting support (6) and run outside the intended cross section of the edge (3), namely a preliminary cut (10) running transversely to the fiber layup (5) along the contour region and a relief cut (11), which determines a processing allowance (15) to the chamfer (2), and then the chamfer (2) is cut using the chamfer cut (16), which ends outside the intended contour (4) in the fiber layup (5), before the intended contour (4) of the blank (1) is produced by the contour cut (17).

## Claims

### Claim 1

A method for producing a blank (1) from a fiber layup (5) having an edge (3) forming a chamfer (2), wherein the fiber layup (5), which is suctioned onto a cutting support (6) of a cutting table (7), is cut through using a contour cut (17), which extends into the cutting support (6), along the intended contour (4) of the blank (1) and is provided with the chamfer (2) using a chamfer cut (16) running at a flat chamfer angle (α) along the intended contour (4), wherein the fiber layup (5) is firstly precut by two cuts, which end above the cutting support (6) and run outside the intended cross section of the edge (3), namely a preliminary cut (10) running transversely to the fiber layup (5) along the contour region and a relief cut (11), which determines a processing allowance (15) to the chamfer (2), and then the chamfer (2) is cut using the chamfer cut (16), which ends outside the intended contour (4) in the fiber layup (5), before the intended contour (4) of the blank (1) is produced by the contour cut (17).

### Claim 2 (depends on 1)

The method according to claim 1, wherein the preliminary cut (10) is carried out before the relief cut (11).

### Claim 3 (depends on 1)

The method according to claim 1, wherein the cut surfaces of the preliminary cut (10) and the relief cut (11) intersect.

### Claim 4 (depends on 2)

The method according to claim 2, wherein the fiber layup (5) is divided before the relief cut (11) in the region of the chamfer (2) by a notch, which runs at a distance from the preliminary cut (10), and which ends in the processing allowance (15) determined by the relief cut (11).

### Claim 5 (depends on 1)

The method according to claim 1, wherein the preliminary cut (10) is carried out in a surface corresponding to the cut surface of the contour cut (17).