CA1218581A - Saw machine - Google Patents
Saw machineInfo
- Publication number
- CA1218581A CA1218581A CA000441929A CA441929A CA1218581A CA 1218581 A CA1218581 A CA 1218581A CA 000441929 A CA000441929 A CA 000441929A CA 441929 A CA441929 A CA 441929A CA 1218581 A CA1218581 A CA 1218581A
- Authority
- CA
- Canada
- Prior art keywords
- saw
- log
- machine
- saw machine
- blades
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B7/00—Sawing machines working with circular saw blades, specially designed for length sawing of trunks
- B27B7/04—Sawing machines working with circular saw blades, specially designed for length sawing of trunks by making use of a plurality of circular saws mounted on a single spindle; Arrangements for adjusting the mutual distances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
- B27B1/007—Methods for subdividing trunks or logs essentially involving sawing taking into account geometric properties of the trunks or logs to be sawn, e.g. curvature
Abstract
ABSTRACT OF THE DISCLOSURE
A saw machine having one or more saw blades for ripping the leg downstream of which are provided one or more parting knives. The problem occurring in saw machines of prior art is that the spacing of the fixed guiding points working the log as viewed in the direction in which the log is being sawn, becomes so large that curve-sawing is no longer possible. In the saw machine of the invention both the saw blades and the parting knives are located in a separate sawing unit articu-latedly attached to the frame of the saw machine and follow-ing the crookedness of the log.
A saw machine having one or more saw blades for ripping the leg downstream of which are provided one or more parting knives. The problem occurring in saw machines of prior art is that the spacing of the fixed guiding points working the log as viewed in the direction in which the log is being sawn, becomes so large that curve-sawing is no longer possible. In the saw machine of the invention both the saw blades and the parting knives are located in a separate sawing unit articu-latedly attached to the frame of the saw machine and follow-ing the crookedness of the log.
Description
1~1~581 The present invention relates to a saw machine having one ol- several saw blades ripping up legs and one or several parting knives disposed downstream of said blades.
Such mounting are known in the art in which the guides, saw blades and parting knives are fixedly mounted in the saw machine. The problem in such designs is that the spacing of lhe fixed guiding points working the timber, as viewed in the direction in which the leg is sawn, becornes so large that curve-sawirlg is no longex possible. Therefore the saw blade or blades fail to follow the crookedness of the tree and they will saw thelog on the line on which they have been fiY~edly mounted. This reduces substantially the wood utilization ratio.
The present invention eliminates the drawback mentioned in the foregoing and to provide an improved saw machine.
According to the present inven-tion ~here is provided a saw maching having one or more saw blades for ripping a log fed to said machine, cne or more parting knives disposed downstream of said hlades, wherein both the saw blades and the parting knives are mounted in a separate sawing unit articulated to a frame of the saw machine for following the crookedness of the log.
Thus in the machine of the invention both the saw blades and the parting knives are located in a separate sawing unit articulatedly connected to the saw machine frame and fol-lowing the crookedness of the log. The articulated attachment of the sawing unit enables curve-sawing to be carried out even when processing large-diameter logs, because due to the arti-culated attachment the spacing of the fixed guiding points in the direction of sawing is short enough and the saw blades andthe parting knives can be~ter follow the crookedness of the tree durins the sawing process.
12~858~
The present invention will be further illustrated by way of the accompanying drawing, in which:-Fig. 1 is an elevational view of a log b~tween theblades and guides of the saw machine in accordance with one embodiment of the present invention; and Fig. 2 is an elevational view similar to Fig. 1 of a sawing unit according to another embodiment of the present invention.
The saw machine comprises, listed in the feeding direction, elastically mounted pull wheels 1, a self-centering set of guide rails 2, hewing cutters 3,4 rotatable about a horizontal axis and a vertical axis, guide rollers 5, and a sawing unit 6. The saw blades 7 and the parting knives 8 are located in the sawing unit 6, which is attached to the frame 9 of the saw machine in an articulated manner, thereby following the contours of the log.
In the embodiment in Fig. 2, the sawing unit comprises guide rollers 10 in front of the saw blades 7. Guide rollers 10 guide the sawing unit 6 in accordance with the contours of the timber 11. The sawing unit 6 is articulatedly attached to the frame 9 of the saw machine to swivel about a horizontal axis 12, and it may in addition be mounted to be turnable about a verti-cal axis 13 indicated with a dash-and-dot line in Fig. 2.
By virtue of the mobility which the articulate arrangement affords to the sawing unit 6, curve-sawing is now successfully managed also with large-diameter circular saw blades 7.
It is obvious to a person skilled in the art, for example, the number of saw blades 7 and of parting knives 8 may ~ary. Depending on the straightness or crookedness of the log being sawn, the saw blade\7 and the parting knife 8 may during the sawing process be in alignment with the lines of the hewing ~`
~218S8~
cutters 3,4 hewing the sides of the log, as in the Example, or they may lie on a different line, that is, the parting knife 8 is pivotally mounted with reference to the saw blade 7.
.~ ~
Such mounting are known in the art in which the guides, saw blades and parting knives are fixedly mounted in the saw machine. The problem in such designs is that the spacing of lhe fixed guiding points working the timber, as viewed in the direction in which the leg is sawn, becornes so large that curve-sawirlg is no longex possible. Therefore the saw blade or blades fail to follow the crookedness of the tree and they will saw thelog on the line on which they have been fiY~edly mounted. This reduces substantially the wood utilization ratio.
The present invention eliminates the drawback mentioned in the foregoing and to provide an improved saw machine.
According to the present inven-tion ~here is provided a saw maching having one or more saw blades for ripping a log fed to said machine, cne or more parting knives disposed downstream of said hlades, wherein both the saw blades and the parting knives are mounted in a separate sawing unit articulated to a frame of the saw machine for following the crookedness of the log.
Thus in the machine of the invention both the saw blades and the parting knives are located in a separate sawing unit articulatedly connected to the saw machine frame and fol-lowing the crookedness of the log. The articulated attachment of the sawing unit enables curve-sawing to be carried out even when processing large-diameter logs, because due to the arti-culated attachment the spacing of the fixed guiding points in the direction of sawing is short enough and the saw blades andthe parting knives can be~ter follow the crookedness of the tree durins the sawing process.
12~858~
The present invention will be further illustrated by way of the accompanying drawing, in which:-Fig. 1 is an elevational view of a log b~tween theblades and guides of the saw machine in accordance with one embodiment of the present invention; and Fig. 2 is an elevational view similar to Fig. 1 of a sawing unit according to another embodiment of the present invention.
The saw machine comprises, listed in the feeding direction, elastically mounted pull wheels 1, a self-centering set of guide rails 2, hewing cutters 3,4 rotatable about a horizontal axis and a vertical axis, guide rollers 5, and a sawing unit 6. The saw blades 7 and the parting knives 8 are located in the sawing unit 6, which is attached to the frame 9 of the saw machine in an articulated manner, thereby following the contours of the log.
In the embodiment in Fig. 2, the sawing unit comprises guide rollers 10 in front of the saw blades 7. Guide rollers 10 guide the sawing unit 6 in accordance with the contours of the timber 11. The sawing unit 6 is articulatedly attached to the frame 9 of the saw machine to swivel about a horizontal axis 12, and it may in addition be mounted to be turnable about a verti-cal axis 13 indicated with a dash-and-dot line in Fig. 2.
By virtue of the mobility which the articulate arrangement affords to the sawing unit 6, curve-sawing is now successfully managed also with large-diameter circular saw blades 7.
It is obvious to a person skilled in the art, for example, the number of saw blades 7 and of parting knives 8 may ~ary. Depending on the straightness or crookedness of the log being sawn, the saw blade\7 and the parting knife 8 may during the sawing process be in alignment with the lines of the hewing ~`
~218S8~
cutters 3,4 hewing the sides of the log, as in the Example, or they may lie on a different line, that is, the parting knife 8 is pivotally mounted with reference to the saw blade 7.
.~ ~
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A saw machine having one or more saw blades for ripping a log fed to said machine, and one or more parting knives disposed downstream of said blades, wherein both the saw blades and the parting knives are mounted in a separate sawing unit articulated to a frame of of the saw machine for following the crookedness of the log.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI824206A FI68014C (en) | 1982-12-07 | 1982-12-07 | SAOGMASKIN |
| FI824206 | 1982-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1218581A true CA1218581A (en) | 1987-03-03 |
Family
ID=8516421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000441929A Expired CA1218581A (en) | 1982-12-07 | 1983-11-25 | Saw machine |
Country Status (10)
| Country | Link |
|---|---|
| CA (1) | CA1218581A (en) |
| CS (1) | CS250236B2 (en) |
| DD (1) | DD212690A1 (en) |
| DE (1) | DE3340842C2 (en) |
| FI (1) | FI68014C (en) |
| FR (1) | FR2537038B1 (en) |
| NO (1) | NO834022L (en) |
| PL (1) | PL140517B1 (en) |
| RO (1) | RO89818A (en) |
| SE (1) | SE456978B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5447186A (en) * | 1993-12-20 | 1995-09-05 | Sawquip International, Inc. | Chipping canter |
| US6929043B2 (en) | 2001-07-24 | 2005-08-16 | Valley Machine Works Ltd. | Optimized board edger and method of operation thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690188A (en) * | 1986-10-27 | 1987-09-01 | Weyerhaeuser Company | Variable curve linebar with skewable saws |
| SE469972B (en) * | 1991-04-22 | 1993-10-18 | Soederhamns Verkstaeder Ab | Process and plant for processing of logs |
| DE4209407A1 (en) * | 1992-03-24 | 1993-09-30 | Esterer Ag Maschf | Lengthwise sawing of timber - involves blade movement dependent upon timber advance, and blade is adjusted for each cut, resulting in parallel cuts |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE504700C (en) * | 1927-11-18 | 1930-08-07 | Ekonomisk Traefoeraedling Ab | Centering and control device for wood sawing machines or the like. |
| FR739292A (en) * | 1932-04-26 | 1933-01-09 | Device for single or multiple universal reciprocating saw | |
| AR206041A1 (en) * | 1974-07-30 | 1976-06-23 | Acme Timber Ind Ltd | METHOD FOR PRODUCING BOARDS ON BOARDS AND OTHER WOODS CUT TO SAW FROM A WORKPIECE OF THE TYPE OF WOOD AND THE SIMILAR AND AN APPARATUS TO CARRY OUT THE METHOD |
| SE420579B (en) * | 1976-02-16 | 1981-10-19 | Skogsegarnas Vaenerind | HOOK CUTTING HOOK DEVICE |
| SE431621B (en) * | 1980-07-03 | 1984-02-20 | Kockums Ind Ab | DEVICE FOR INSTALLATION OF WOOD BLOCK LONG A LOADING ROAD IN A WOODWORKING MACHINE |
-
1982
- 1982-12-07 FI FI824206A patent/FI68014C/en not_active IP Right Cessation
-
1983
- 1983-11-04 NO NO834022A patent/NO834022L/en unknown
- 1983-11-07 SE SE8306111A patent/SE456978B/en not_active IP Right Cessation
- 1983-11-11 DE DE3340842A patent/DE3340842C2/en not_active Expired
- 1983-11-17 DD DD256813A patent/DD212690A1/en not_active IP Right Cessation
- 1983-11-18 CS CS838591A patent/CS250236B2/en unknown
- 1983-11-18 RO RO83112601A patent/RO89818A/en unknown
- 1983-11-25 CA CA000441929A patent/CA1218581A/en not_active Expired
- 1983-12-06 FR FR8319504A patent/FR2537038B1/en not_active Expired
- 1983-12-07 PL PL1983244955A patent/PL140517B1/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5447186A (en) * | 1993-12-20 | 1995-09-05 | Sawquip International, Inc. | Chipping canter |
| US6929043B2 (en) | 2001-07-24 | 2005-08-16 | Valley Machine Works Ltd. | Optimized board edger and method of operation thereof |
| US7543615B2 (en) | 2001-07-24 | 2009-06-09 | U.S. Natural Resources, Inc. | Optimized board edger and method of operation thereof |
| US7571751B2 (en) | 2001-07-24 | 2009-08-11 | U.S. Natural Resources, Inc. | Optimized board edger and method of operation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| SE456978B (en) | 1988-11-21 |
| PL244955A1 (en) | 1984-08-13 |
| NO834022L (en) | 1984-06-08 |
| FR2537038B1 (en) | 1987-01-09 |
| SE8306111L (en) | 1984-06-08 |
| SE8306111D0 (en) | 1983-11-07 |
| DE3340842A1 (en) | 1984-06-07 |
| CS250236B2 (en) | 1987-04-16 |
| PL140517B1 (en) | 1987-05-30 |
| FI824206A0 (en) | 1982-12-07 |
| FR2537038A1 (en) | 1984-06-08 |
| DE3340842C2 (en) | 1985-09-26 |
| RO89818A (en) | 1986-07-30 |
| FI68014B (en) | 1985-03-29 |
| FI824206L (en) | 1984-06-08 |
| DD212690A1 (en) | 1984-08-22 |
| FI68014C (en) | 1985-07-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |