EP0449896A1 - Cutting machine. - Google Patents
Cutting machine.Info
- Publication number
- EP0449896A1 EP0449896A1 EP19900900760 EP90900760A EP0449896A1 EP 0449896 A1 EP0449896 A1 EP 0449896A1 EP 19900900760 EP19900900760 EP 19900900760 EP 90900760 A EP90900760 A EP 90900760A EP 0449896 A1 EP0449896 A1 EP 0449896A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting machine
- machine according
- groove
- knife
- profile part
- Prior art date
- 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
Links
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
- B27G13/02—Cutter blocks; Other rotary cutting tools in the shape of long arbors, i.e. cylinder cutting blocks
- B27G13/04—Securing the cutters by mechanical clamping means
Definitions
- the invention relates to a cutting machine according to the preamble of claim 1.
- a knife holder for a planing machine is already known, in which the knife is clamped in a U-shaped groove by means of two profile parts.
- the profile parts do not completely close the groove in the knife shaft, so that chips can get caught in the gaps. Since these hinder the planing work, they are removed by hand in the cone. There is a risk that the user injures himself on the sharp planing knives. It is also unfavorable that the screws for tensioning the knife can only be operated with an open-end wrench, which has to be implemented several times when tightening.
- the cutting machine according to the invention with the characterizing features of claim 1 has the advantage that the chip flow is improved and no chips can get caught in the knife carrier and that noise is reduced.
- the knife cutting device is very simple from only two profile parts constructed, the dimensional accuracy of which does not require any high requirements. The same also applies to the groove in the knife carrier, which, due to its rounded shape which is favorable in terms of production, weakens the knife carrier only minimally, as a result of which only very low tensions are caused in the knife carrier.
- FIG. 1 shows a cutting machine designed as a planer
- FIG. 2 shows a knife carrier in the form of a plane shaft
- FIG. 3 shows a cross section through the knife carrier according to line III-III in FIG. 2
- FIG. 4 also shows a cross section through a second exemplary embodiment Knife holder.
- the electrically driven planer 1 has a support surface 2 for abutment against a workpiece, over which an Eobel shaft 3 with the knives 4 inserted protrudes (see FIG. 2).
- the hollow shaft 3 rotates in the direction of the arrow and consists of a knife carrier 5, at least one radially further outward as a support bar 6 formed profile part, a radially outer profile part designed as a clamping strip 7 and a knife 4 designed as a turning knife.
- the three parts 5, 6, 7 are to be manufactured as drawn profile parts, the knife carrier 5 preferably made of aluminum and the profile parts 6, 7 made of steel consist.
- the terminal block 7 has three threaded bores 8 and two through holes 9 arranged in its end regions.
- the knife carrier 5 preferably has two grooves 12 running in its axial direction, which have mutually facing side walls 13, 14, so that the groove 12 narrows outwards (see FIG. 3).
- the side walls 13, 14 merge into fillets 15, 16 with a large diameter into the base area 17 of the groove 12.
- the side wall 14 has a projection 18 with a rounded surface at the end of the groove in order to avoid sharp edge pressures.
- the L-shaped support bar 6 inserted into the groove 12 has two legs 20, 21.
- the leg 20 bears on the one hand on the side wall 13 and on the other hand on the knife 4.
- a raised bar 22 facing the knife 4 on the leg 20 engages in a recess 23 of the knife 4.
- the support strip 6 has an indentation 24 and then a bulge 25.
- In the leg 21 there are two threaded bores 26, into which Allen screws 27 can be screwed for setting the flight circle diameter.
- the screws 27 are supported against the base surface 17 of the groove 12.
- Furthermore, in the leg 21 there are three depressions 28 which correspond to the threaded bores 8, but which are not absolutely necessary for the function of the clamping device 30 between the support strip 6 and the clamping strip 7.
- the terminal block 7 has a cuboid-like shape with an inwardly curved surface 32 that is closed except for the bores 8, 9.
- the terminal block rests on the one hand on the side wall 14 of the groove 12 and on the opposite side on the knife 4. Below the knife 4 the terminal strip 7 has a projection 33 which engages in the indentation 24 of the support strip 6.
- the flight circle diameter of the knife edge 4 can be set independently of its clamping by means of the screws 27.
- the screws 31 are screwed against the support bar 6, so that the clamping bar 7 is pivoted about an axis located in the region of the projection 33.
- the strip 7 is pressed on the one hand against the knife 4 and on the other hand against the projection 18, always a closed one
- the support bar 6 With the tensioning by means of the screws 31, the support bar 6 is simultaneously pressed against the side wall 13 of the groove 12, the side wall 13 giving way under certain circumstances if the material of the knife carrier has a high elasticity, as in the exemplary embodiment. Therefore, in order to avoid a gap between the side wall 13 and the support strip 6, the side wall 13 is inclined more inward by a small angle ⁇ than corresponds to the outside of the leg 20. When tensioning, the side wall 13 and the leg 20 then lie seamlessly against one another.
- the second exemplary embodiment according to FIG. 4 differs from the first in other clamping and adjusting devices.
- the same reference numbers have therefore been used for the same parts and reference numbers increased by 100 for similar parts.
- the support strip 106 has in its leg 121 an externally open bore 135 extending in its longitudinal direction.
- this bore 135 there is a rod-shaped eccentric 136 with a hexagon recess 137 for the tool engagement.
- the eccentric 136 is supported in a recess 138 in the groove 12 and is used to set the flight circle diameter of the knife edge 4.
- the terminal block 107 has a longitudinal bore 140 corresponding to the bore 135.
- a rod-shaped eccentric 141 with hexagon recesses 142 at the ends is likewise inserted into this.
- the eccentric 141 is mounted in a trough 143 in the support bar 106.
- a rounded projection 118 is arranged here on the terminal strip 107.
- the function of the second embodiment corresponds exactly to that of the first, with the only difference that for clamping and adjusting with the tool, the screw heads are not engaged from the surface 32, but in the axial direction to the knife carrier 105 from the side.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Milling, Drilling, And Turning Of Wood (AREA)
Abstract
Machine d'enlèvement de copeaux à système de serrage des lames. Dans une machine d'enlèvement de copeaux, notamment un rabot, on veut réduire le risque de blessure lors du retrait de copeaux coincés dans l'arbre de rabotage et faciliter le montage de la lame, tout en réduisant le bruit. A cet effet, on serre au moyen d'un dispositif de serrage (30) deux pièces profilées (6, 7) dans une rainure (12) du porte-lame (5), la lame (4) étant simultanément retenue. Les pièces profilées (6, 7) forment dans la rainure (12) une surface fermée sans lacunes. Un réglage ajustable au moyen de vis (27) indépendamment du dispositif de serrage (30) permet d'ajuster le diamètre du cercle de rotation de la lame (4). On peut utiliser ce système de serrage de la lame pour toutes machines d'enlèvement de copeaux, telles que rabots ou fraises, dans lesquelles il faut serrer des lames.Chip removal machine with blade clamping system. In a chip removal machine, especially a planer, it is desired to reduce the risk of injury when removing chips stuck in the planer shaft and to facilitate assembly of the blade, while reducing noise. To this end, two profiled parts (6, 7) are clamped by means of a clamping device (30) in a groove (12) of the blade holder (5), the blade (4) being simultaneously retained. The profiled parts (6, 7) form in the groove (12) a closed surface without gaps. An adjustable setting by means of screws (27) independently of the clamping device (30) allows the diameter of the rotation circle of the blade (4) to be adjusted. This blade clamping system can be used for all chip removal machines, such as planers or cutters, in which blades need to be clamped.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3843466 | 1988-12-23 | ||
DE3843466A DE3843466A1 (en) | 1988-12-23 | 1988-12-23 | MACHINING MACHINE |
PCT/DE1989/000768 WO1990007405A1 (en) | 1988-12-23 | 1989-12-14 | Cutting machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0449896A1 true EP0449896A1 (en) | 1991-10-09 |
EP0449896B1 EP0449896B1 (en) | 1995-05-17 |
Family
ID=6369993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90900760A Expired - Lifetime EP0449896B1 (en) | 1988-12-23 | 1989-12-14 | Cutting machine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0449896B1 (en) |
JP (1) | JP2935560B2 (en) |
BR (1) | BR8907849A (en) |
DE (2) | DE3843466A1 (en) |
WO (1) | WO1990007405A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT216U1 (en) * | 1994-08-29 | 1995-05-26 | Sperl Josef Sperl Josef | DISC FOR SLOT AND PIN PROCESSING FOR WOODEN WINDOW MAKING AND KNIFE FOR SUCH A DISC |
FI96288C (en) * | 1995-04-20 | 1996-06-10 | Kone Wood Oy | Device for attaching the knife to the rotating disc of a chop |
JP3197476B2 (en) * | 1995-12-28 | 2001-08-13 | 兼房株式会社 | Milling cutter |
AT2192U1 (en) * | 1997-07-22 | 1998-06-25 | Aigner Werkzeuge Ges M B H | KNIFE HEAD FOR A MILLING DEVICE |
DE102006015692A1 (en) * | 2006-03-29 | 2007-10-04 | Michael Weinig Ag | Workpiece processing machine, has tool e.g. front face cutter, comprising cutter rim surrounding inner table for supporting workpiece, where inner table is integral component of tool |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE318815C (en) * | 1918-02-19 | 1920-02-12 | Alexander Klehe | Device for adjusting knives in knife heads and similar tools |
US1490745A (en) * | 1922-11-27 | 1924-04-15 | Johnston Thomas | Rotary planer head |
DE1291887B (en) * | 1963-08-03 | 1969-04-03 | Lang Edmund | Knife shaft or cutter head for woodworking machines |
US3644050A (en) * | 1970-04-02 | 1972-02-22 | Waukesha Cutting Tools Inc | Cartridge-type cutting tool with insert lock |
DE2509304C2 (en) * | 1975-03-04 | 1977-04-28 | Karl Hertel | DEVICE FOR CLAMPING A CUTTING KNIFE, E.G. ON KNIFE HEADS FOR WOOD CHIPPING |
GB1500556A (en) * | 1976-10-12 | 1978-02-08 | Wickman Wimet Ltd | Milling cutters |
EP0042444B1 (en) * | 1980-06-12 | 1983-12-21 | Black & Decker Inc. | Cutting blade assembly for a power planer |
EP0048303B1 (en) * | 1980-10-07 | 1985-06-26 | Black & Decker Inc. | Cutterhead for a power planer |
-
1988
- 1988-12-23 DE DE3843466A patent/DE3843466A1/en not_active Ceased
-
1989
- 1989-12-14 JP JP2500955A patent/JP2935560B2/en not_active Expired - Lifetime
- 1989-12-14 BR BR898907849A patent/BR8907849A/en not_active IP Right Cessation
- 1989-12-14 WO PCT/DE1989/000768 patent/WO1990007405A1/en active IP Right Grant
- 1989-12-14 DE DE58909238T patent/DE58909238D1/en not_active Expired - Fee Related
- 1989-12-14 EP EP90900760A patent/EP0449896B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9007405A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE3843466A1 (en) | 1990-06-28 |
JP2935560B2 (en) | 1999-08-16 |
EP0449896B1 (en) | 1995-05-17 |
JPH04502432A (en) | 1992-05-07 |
BR8907849A (en) | 1991-10-01 |
DE58909238D1 (en) | 1995-06-22 |
WO1990007405A1 (en) | 1990-07-12 |
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