CA2193794A1 - Thin kerf circular gangsaw - Google Patents
Thin kerf circular gangsawInfo
- Publication number
- CA2193794A1 CA2193794A1 CA002193794A CA2193794A CA2193794A1 CA 2193794 A1 CA2193794 A1 CA 2193794A1 CA 002193794 A CA002193794 A CA 002193794A CA 2193794 A CA2193794 A CA 2193794A CA 2193794 A1 CA2193794 A1 CA 2193794A1
- Authority
- CA
- Canada
- Prior art keywords
- thickness
- blade diameter
- circular saw
- feed path
- kerf
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
- B23D45/02—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock mounted on a carriage
-
- 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
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
-
- 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
- B27B9/00—Portable power-driven circular saws for manual operation
Abstract
A thin kerf circular saw set for sawing a workpiece having a first thickness and translating in a downstream direction along a feed path, the circular saw set including first and second circular saws generally coplanar in a sawing plane, the sawing plane generally perpendicular to generally parallel first and second axes of rotation of the first and second circular saws respectively and the sawing plane generally parallel with the downstream direction, the first circular saw upstream of the second circular saw along the feed path, the first and second axes of rotation adjacent the feed path, the first circular saw having a first kerf thickness, the second circular saw having a second kerf thickness thicker than the first kerf thickness, the first circular saw having a first blade diameter, wherein a portion of the first blade diameter lies in the feed path, the second circular saw having a second blade diameter greater than the first blade diameter of the first circular saw, wherein a portion of the second blade diameter lies in the feed path, and wherein, in the feed path, the portion of the second blade diameter is greater than the portion of the first blade diameter.
Description
THIN KERF CIRCULAR GANGSAW
Field of the Invention This invention relates to a method and a device for sawing wood cants or timbersinto boards using thin kerf circular gangsaws where a circular saw is used for the full depth of cut to obtain a good appearance of sawn finish.
Back~round of the Invention In a prior art method, timbers were fed through a s~hg~ng consisting of thin kerf reciprocating saw blades so as to produce boards. Although this is an effective method of thin kerf sawing, the speeds that can be used in a s~h~ng are limited to about l 50 feet per minute.
More common methods of gangsawing use circular saws. However, standard circular saws in such gangsaws have a relatively wider kerf, and relatively slow feed rates for full depth of cut saws. For partial depth-of-cut saws using a 'double arbor' configuration, a noticeable 'matchline' in the cut face of the workpiece is formed where the opposing saws overlap. Feed rates are improved in such configurations.
It is generally known that a significant limitation to high feed rates while sawing wood is the maximum cutting load that can be imposed on any particular saw design due to its stiffness. Saw stifffiess is primarily the product of saw thickness and diameter and speed.
Rotational speed of the saw is commonly limited by running it below its first critical speed. Thus, 2 5 all these factors combine to create a practical limit to feed rate on a particular saw design. The method stated reduces the load on the primary saw by taking some ofthe cutting load and opening up a cut path with a preceding saw.
Applicant is aware of United States Patents 5,213,020 "Thin-Kerf Circular Head Saw and Saw Guide" which issued to Pleau on May 25, 1993. Pleau teaches a single circular saw having a relatively thin kerf. The saw blade is guided by a selectively position able rigid saw guide at the in-feed side of the saw and at a position below the saw cut.
It is an object of the present invention to saw lumber from cants using multiple in-line circular saws for a single saw cut, where upstream saws are partial depth-of-cut saws and downstream circular saws are full depth-of-cut saws, to thereby minimi7e signs of mi~m~tch on visual grade lumber.
It is another object of the present invention to increase production rates, by increasing feed speeds that are otherwise limited by a thin, large diameter, circular saws; by having the downstream saws aligned with and following the cutting path of the upstream saws, where the downstream saws have a thicker kerf than the upstream saws to thereby widen the kerf enough to clean the sides of the boards being cut.
Summar,v of the Invention The method and apparatus of the present invention for sawing cants or timbers 2 0 (herein after collectively referred to as "workpieces") with a thin kerf circular gangsaw cooperates with an infeed table having hold down rolls which feed a workpiece into the gangsaw. An upstream small diameter, thin kerf circular saw cuts a first partial depth-of-cut, advantageously half depth, cut in the workpiece. A downstream larger diameter, thin kerf circular saw cuts a full depth-of-cut following the cut path of the first partial depth-of-cut cut in the workpiece. The 2 5 downstream larger saw is thereby subjected to a reduced cutting load allowing the larger saw to operate at a higher workpiece feed speed without having to increase the stiffness of the saw blade.
Advantageously, the downstream larger saw has a slightly thicker kerf than the upstream small saw so as to improve the surface finish of the full depth-of-cut saw cut. Sawing deviation of the downstream large saw in the portion of the cut preceded by the upstream small saw is reduced because of the guiding bias from the 'precut' made by the small saw.
In summary, the thin kerf circular saw set of the present invention for sawing aworkpiece having a first thickness and tr~n~l~ting in a downstream direction along a feed path includes first and second circular saws generally coplanar in a sawing plane, the sawing plane generally perpendicular to generally parallel first and second axes of rotation of the first and second circular saws respectively and the sawing plane generally parallel with the downstream direction, where the first circular saw is upstream of the second circular saw along the feed path, the first and second axes of rotation are adjacent the feed path, the first circular saw has a first kerf thickness, the second circular saw has a second kerf thickness thicker than the first kerf thickness, the first circular saw has a first blade diameter, wherein a portion of the first blade diameter lies in the fee~1p~th, the second circular saw has a second blade diameter greater than the first blade diameter of the first circular saw, wherein a portion of the second blade diameter lies in the feedpath, and wherein, in the feed path, the portion of the second blade diameter is greater than the portion of the first blade diameter.
The first axis of rotation may be above the feed path, and the second axis of rotation below the feed path or both may be below the feed path. The sawing plane may be 2 o generally vertical.
Advantageously, the portion ofthe second blade diameter is equal to or greater than the first thickness and the first blade diameter is less than the first thickness, and in one aspect the portion of the first blade diameter is equal to or less than one half of the first thickness. Further 2 5 advantageously, the second kerf thickness is slightly thicker than the first kerf thickness.
In a further aspect, the second circular saw is selectively positionable between a retracted position out of the feed path and a sawing position lying in the feed path so that a portion 2~ 93794 of the second blade diameter lies in the feedpath when the second circular saw is in the sawing position, wherein the workpiece is tr~n~l~t~ble in the downstream direction at a first feed rate when the second circular saw is in the sawing position, and the workpiece is tr~n.~l~t~ble in the downstream direction at a second feed rate when the second circular saw is in the retracted position, and wherein the second feed rate is greater than the first feed rate.
Brief Description of the Drawings The invention will be better understood by reference to drawings, wherein:
Figure 1 is a side elevation view according to a pLef~ d embodiment of the invention;
Figure 2 is a side elevation view according to an alternative embodiment of the invention;
Detailed Description of the Preferred Embodiment Referring to the drawing figures wherein similar characters of reference represent 2 o corresponding parts in each view, the gangsaw apparatus is generally indicated by the reference numeral 10 and is best seen in Figure 1 and Figure 2.
As seen in Figure 1, workpiece 12 is fed in direction A by the urging force of driven press rolls 14 which, by means of press roll cylinders 14a, press workpiece 12 onto bed rolls 16. Workpiece 12 is thereby tr~n~l~te~l into cutting engagement with an upstream small saw 18 rotationally supported on overhead arbor 20. Small saw 18 cuts a partial depth-of-cut face 26 in workpiece 12. Workpiece 12 continues in direction A along the cutting path into cutting engagement with a downstream larger saw 22 rotationally supported on bottom arbor 24. Larger saw 22 finishes cutting through the rem:~in~ler of workpiece 12 not cut by the partial depth-of-cut of small saw 18 and cleans up face 26 by the action of its slightly thicker kerf planing face 26.
~mall saw 18 rotates between guide pads 18a. Larger saw 22 rotates between guide pads 22a.
From cutting engagement with larger saw 22, workpiece 12 translates in direction A into driven outfeed press rolls 30 which, by means of press roll cylinders 30a, press workpiece 12 onto outfeed bed rolls 32 which feed workpiece 12 along the cutting path through the gangsaw 10 so as to exit gangsaw 10.
The embodiment of the large saw on bottom and small saw on top can be inverted o to suit different requirements of the sawing machine and the range of product sizes produced.
Thus, in a second configuration, as shown in Figure 2, the first small saw 18 is rotationally mounted on a bottom arbor 34. In this embodiment, the large diameter and thicker kerf saw 22 can be moved out of the sawing zone when cutting thinner cants and flitches that would be cut completely through by small saw 18. This gives added versatility to the machine by allowing 1 5 thinner saw kerfs with faster feedrates by shifting thicker saw 22 out of the feed path of workpiece 12.
In an alternative embodiment, non-guided saws, that is saws not requiring guide pads, can be used in substitution for saws 18 and 22, depending on the types of saw blades being 2 o used. The applicability of non-guided saws will depend on whether a desired blade type will deform under the cutting stresses imposed during high feed rates. Deformation of, for example, the larger saw blade may render useless the advantages of the present invention, namely, in one aspect, the use of a slightly thicker kerf on the larger saw blade to clean or plane the partial depth-of-cut face exposed by the small saw blade so as to remove unsightly match lines in the cut.
All embodiments of the present invention may be applied to either fixed or selectively positionable saws.
As will be appalenl to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
Field of the Invention This invention relates to a method and a device for sawing wood cants or timbersinto boards using thin kerf circular gangsaws where a circular saw is used for the full depth of cut to obtain a good appearance of sawn finish.
Back~round of the Invention In a prior art method, timbers were fed through a s~hg~ng consisting of thin kerf reciprocating saw blades so as to produce boards. Although this is an effective method of thin kerf sawing, the speeds that can be used in a s~h~ng are limited to about l 50 feet per minute.
More common methods of gangsawing use circular saws. However, standard circular saws in such gangsaws have a relatively wider kerf, and relatively slow feed rates for full depth of cut saws. For partial depth-of-cut saws using a 'double arbor' configuration, a noticeable 'matchline' in the cut face of the workpiece is formed where the opposing saws overlap. Feed rates are improved in such configurations.
It is generally known that a significant limitation to high feed rates while sawing wood is the maximum cutting load that can be imposed on any particular saw design due to its stiffness. Saw stifffiess is primarily the product of saw thickness and diameter and speed.
Rotational speed of the saw is commonly limited by running it below its first critical speed. Thus, 2 5 all these factors combine to create a practical limit to feed rate on a particular saw design. The method stated reduces the load on the primary saw by taking some ofthe cutting load and opening up a cut path with a preceding saw.
Applicant is aware of United States Patents 5,213,020 "Thin-Kerf Circular Head Saw and Saw Guide" which issued to Pleau on May 25, 1993. Pleau teaches a single circular saw having a relatively thin kerf. The saw blade is guided by a selectively position able rigid saw guide at the in-feed side of the saw and at a position below the saw cut.
It is an object of the present invention to saw lumber from cants using multiple in-line circular saws for a single saw cut, where upstream saws are partial depth-of-cut saws and downstream circular saws are full depth-of-cut saws, to thereby minimi7e signs of mi~m~tch on visual grade lumber.
It is another object of the present invention to increase production rates, by increasing feed speeds that are otherwise limited by a thin, large diameter, circular saws; by having the downstream saws aligned with and following the cutting path of the upstream saws, where the downstream saws have a thicker kerf than the upstream saws to thereby widen the kerf enough to clean the sides of the boards being cut.
Summar,v of the Invention The method and apparatus of the present invention for sawing cants or timbers 2 0 (herein after collectively referred to as "workpieces") with a thin kerf circular gangsaw cooperates with an infeed table having hold down rolls which feed a workpiece into the gangsaw. An upstream small diameter, thin kerf circular saw cuts a first partial depth-of-cut, advantageously half depth, cut in the workpiece. A downstream larger diameter, thin kerf circular saw cuts a full depth-of-cut following the cut path of the first partial depth-of-cut cut in the workpiece. The 2 5 downstream larger saw is thereby subjected to a reduced cutting load allowing the larger saw to operate at a higher workpiece feed speed without having to increase the stiffness of the saw blade.
Advantageously, the downstream larger saw has a slightly thicker kerf than the upstream small saw so as to improve the surface finish of the full depth-of-cut saw cut. Sawing deviation of the downstream large saw in the portion of the cut preceded by the upstream small saw is reduced because of the guiding bias from the 'precut' made by the small saw.
In summary, the thin kerf circular saw set of the present invention for sawing aworkpiece having a first thickness and tr~n~l~ting in a downstream direction along a feed path includes first and second circular saws generally coplanar in a sawing plane, the sawing plane generally perpendicular to generally parallel first and second axes of rotation of the first and second circular saws respectively and the sawing plane generally parallel with the downstream direction, where the first circular saw is upstream of the second circular saw along the feed path, the first and second axes of rotation are adjacent the feed path, the first circular saw has a first kerf thickness, the second circular saw has a second kerf thickness thicker than the first kerf thickness, the first circular saw has a first blade diameter, wherein a portion of the first blade diameter lies in the fee~1p~th, the second circular saw has a second blade diameter greater than the first blade diameter of the first circular saw, wherein a portion of the second blade diameter lies in the feedpath, and wherein, in the feed path, the portion of the second blade diameter is greater than the portion of the first blade diameter.
The first axis of rotation may be above the feed path, and the second axis of rotation below the feed path or both may be below the feed path. The sawing plane may be 2 o generally vertical.
Advantageously, the portion ofthe second blade diameter is equal to or greater than the first thickness and the first blade diameter is less than the first thickness, and in one aspect the portion of the first blade diameter is equal to or less than one half of the first thickness. Further 2 5 advantageously, the second kerf thickness is slightly thicker than the first kerf thickness.
In a further aspect, the second circular saw is selectively positionable between a retracted position out of the feed path and a sawing position lying in the feed path so that a portion 2~ 93794 of the second blade diameter lies in the feedpath when the second circular saw is in the sawing position, wherein the workpiece is tr~n~l~t~ble in the downstream direction at a first feed rate when the second circular saw is in the sawing position, and the workpiece is tr~n.~l~t~ble in the downstream direction at a second feed rate when the second circular saw is in the retracted position, and wherein the second feed rate is greater than the first feed rate.
Brief Description of the Drawings The invention will be better understood by reference to drawings, wherein:
Figure 1 is a side elevation view according to a pLef~ d embodiment of the invention;
Figure 2 is a side elevation view according to an alternative embodiment of the invention;
Detailed Description of the Preferred Embodiment Referring to the drawing figures wherein similar characters of reference represent 2 o corresponding parts in each view, the gangsaw apparatus is generally indicated by the reference numeral 10 and is best seen in Figure 1 and Figure 2.
As seen in Figure 1, workpiece 12 is fed in direction A by the urging force of driven press rolls 14 which, by means of press roll cylinders 14a, press workpiece 12 onto bed rolls 16. Workpiece 12 is thereby tr~n~l~te~l into cutting engagement with an upstream small saw 18 rotationally supported on overhead arbor 20. Small saw 18 cuts a partial depth-of-cut face 26 in workpiece 12. Workpiece 12 continues in direction A along the cutting path into cutting engagement with a downstream larger saw 22 rotationally supported on bottom arbor 24. Larger saw 22 finishes cutting through the rem:~in~ler of workpiece 12 not cut by the partial depth-of-cut of small saw 18 and cleans up face 26 by the action of its slightly thicker kerf planing face 26.
~mall saw 18 rotates between guide pads 18a. Larger saw 22 rotates between guide pads 22a.
From cutting engagement with larger saw 22, workpiece 12 translates in direction A into driven outfeed press rolls 30 which, by means of press roll cylinders 30a, press workpiece 12 onto outfeed bed rolls 32 which feed workpiece 12 along the cutting path through the gangsaw 10 so as to exit gangsaw 10.
The embodiment of the large saw on bottom and small saw on top can be inverted o to suit different requirements of the sawing machine and the range of product sizes produced.
Thus, in a second configuration, as shown in Figure 2, the first small saw 18 is rotationally mounted on a bottom arbor 34. In this embodiment, the large diameter and thicker kerf saw 22 can be moved out of the sawing zone when cutting thinner cants and flitches that would be cut completely through by small saw 18. This gives added versatility to the machine by allowing 1 5 thinner saw kerfs with faster feedrates by shifting thicker saw 22 out of the feed path of workpiece 12.
In an alternative embodiment, non-guided saws, that is saws not requiring guide pads, can be used in substitution for saws 18 and 22, depending on the types of saw blades being 2 o used. The applicability of non-guided saws will depend on whether a desired blade type will deform under the cutting stresses imposed during high feed rates. Deformation of, for example, the larger saw blade may render useless the advantages of the present invention, namely, in one aspect, the use of a slightly thicker kerf on the larger saw blade to clean or plane the partial depth-of-cut face exposed by the small saw blade so as to remove unsightly match lines in the cut.
All embodiments of the present invention may be applied to either fixed or selectively positionable saws.
As will be appalenl to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
Claims (19)
1. A thin kerf circular saw set for sawing a workpiece having a first thickness and translating in a downstream direction along a feed path, said circular saw set comprising:
first and second circular saws generally coplanar in a sawing plane, said sawing plane generally perpendicular to generally parallel first and second axes of rotation of said first and second circular saws respectively and said sawing plane generally parallel with said downstream direction, said first circular saw upstream of said second circular saw along said feed path, said first and second axes of rotation adjacent said feed path, said first circular saw having a first kerf thickness, said second circular saw having a second kerf thickness thicker than said first kerf thickness, said first circular saw having a first blade diameter, wherein a portion of said first blade diameter lies in said feed path, said second circular saw having a second blade diameter greater than said first blade diameter of said first circular saw, wherein a portion of said second blade diameter lies in said feed path, and wherein, in said feed path, said portion of said second blade diameter is greater than said portion of said first blade diameter.
first and second circular saws generally coplanar in a sawing plane, said sawing plane generally perpendicular to generally parallel first and second axes of rotation of said first and second circular saws respectively and said sawing plane generally parallel with said downstream direction, said first circular saw upstream of said second circular saw along said feed path, said first and second axes of rotation adjacent said feed path, said first circular saw having a first kerf thickness, said second circular saw having a second kerf thickness thicker than said first kerf thickness, said first circular saw having a first blade diameter, wherein a portion of said first blade diameter lies in said feed path, said second circular saw having a second blade diameter greater than said first blade diameter of said first circular saw, wherein a portion of said second blade diameter lies in said feed path, and wherein, in said feed path, said portion of said second blade diameter is greater than said portion of said first blade diameter.
2. The device of claim 1 wherein said first axis of rotation is above said feed path, said second axis of rotation is below said feed path, and said sawing plane is generally vertical.
3. The device of claim 2 wherein said portion of said second blade diameter is equal to or greater than said first thickness and said first blade diameter is less than said first thickness.
4. The device of claim 3 wherein said portion of said first blade diameter is equal to or less than one half of said first thickness.
5. The device of claim 3 wherein said second kerf thickness is slightly thicker than said first kerf thickness.
6. The device of claim 1 wherein said first and second axes of rotation are below said feed path and said sawing plane is generally vertical.
7. The device of claim 6 wherein said portion of said second blade diameter is equal to or greater than said first thickness and said first blade diameter is less than said first thickness.
8. The device of claim 7 wherein said portion of said first blade diameter is equal to or less than one half of said first thickness.
9. The device of claim 7 wherein said second kerf thickness is slightly thicker than said first kerf thickness.
10. A thin kerf circular saw set for sawing a workpiece having a first thickness and translating in a downstream direction along a feed path, said circular saw set comprising:
first and second circular saws generally coplanar in a sawing plane, said sawing plane generally perpendicular to generally parallel first and second axes of rotation of said first and second circular saws respectively and said sawing plane generally parallel with said downstream direction, said first circular saw upstream of said second circular saw along said feed path, said first and second axes of rotation adjacent said feed path, said first circular saw having a first kerf thickness, said second circular saw having a second kerf thickness thicker than said first kerf thickness, said second circular saw selectively positionable between a retracted position out of said feed path and a sawing position lying in said feed path, said first circular saw having a first blade diameter, wherein a portion of said first blade diameter lies in said feed path, said second circular saw having a second blade diameter greater than said first blade diameter of said first circular saw, wherein a portion of said second blade diameter lies in said feed path when said second circular saw is in said sawing position, and wherein, in said feed path, said portion of said second blade diameter is greater than said portion of said first blade diameter.
first and second circular saws generally coplanar in a sawing plane, said sawing plane generally perpendicular to generally parallel first and second axes of rotation of said first and second circular saws respectively and said sawing plane generally parallel with said downstream direction, said first circular saw upstream of said second circular saw along said feed path, said first and second axes of rotation adjacent said feed path, said first circular saw having a first kerf thickness, said second circular saw having a second kerf thickness thicker than said first kerf thickness, said second circular saw selectively positionable between a retracted position out of said feed path and a sawing position lying in said feed path, said first circular saw having a first blade diameter, wherein a portion of said first blade diameter lies in said feed path, said second circular saw having a second blade diameter greater than said first blade diameter of said first circular saw, wherein a portion of said second blade diameter lies in said feed path when said second circular saw is in said sawing position, and wherein, in said feed path, said portion of said second blade diameter is greater than said portion of said first blade diameter.
11. The device of claim 10 wherein said workpiece is translatable in said downstream direction at a first feed rate when said second circular saw is in said sawing position, and said workpiece is translatable in said downstream direction at a second feed rate when said second circular saw is in said retracted position, and said second feed rate is greater than said first feed rate.
12. The device of claim 11 wherein said first axis of rotation is above said feed path, said second axis of rotation is below said feed path, and said sawing plane is generally vertical.
13. The device of claim 12 wherein said portion of said second blade diameter is equal to or greater than said first thickness and said first blade diameter is less than said first thickness.
14. The device of claim 13 wherein said portion of said first blade diameter is equal to or less than one half of said first thickness.
15. The device of claim 13 wherein said second kerf thickness is slightly thicker than said first kerf thickness.
16. The device of claim 11 wherein said first and second axes of rotation are below said feed path and said sawing plane is generally vertical.
17. The device of claim 16 wherein said portion of said second blade diameter is equal to or greater than said first thickness and said first blade diameter is less than said first thickness.
18. The device of claim 17 wherein said portion of said first blade diameter is equal to or less than one half of said first thickness.
19. The device of claim 17 wherein said second kerf thickness is slightly thicker than said first kerf thickness.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002193794A CA2193794A1 (en) | 1996-12-23 | 1996-12-23 | Thin kerf circular gangsaw |
| JP9370226A JPH10193301A (en) | 1996-12-23 | 1997-12-24 | Shallow cut groove circular long sawing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002193794A CA2193794A1 (en) | 1996-12-23 | 1996-12-23 | Thin kerf circular gangsaw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2193794A1 true CA2193794A1 (en) | 1998-06-23 |
Family
ID=4159517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002193794A Abandoned CA2193794A1 (en) | 1996-12-23 | 1996-12-23 | Thin kerf circular gangsaw |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH10193301A (en) |
| CA (1) | CA2193794A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6929043B2 (en) | 2001-07-24 | 2005-08-16 | Valley Machine Works Ltd. | Optimized board edger and method of operation thereof |
| CN112109149A (en) * | 2019-06-20 | 2020-12-22 | 宁波良业电器有限公司 | Handheld electric circular saw |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101758563B (en) * | 2008-10-30 | 2012-05-30 | 苏州宝时得电动工具有限公司 | Bench saw |
| KR100998931B1 (en) | 2010-08-26 | 2010-12-09 | 주식회사 태원금속 | Manufacturing apparatus of semiprocessed ring for a big flange |
| KR101021490B1 (en) * | 2010-08-26 | 2011-03-16 | 주식회사 태원금속 | Manufacturing apparatus of semiprocessed ring for a big flange |
| CN105834526A (en) * | 2016-04-27 | 2016-08-10 | 太仓宝达齿条有限公司 | Rotary-cut processing device for racks |
| JP7421028B2 (en) * | 2018-10-16 | 2024-01-24 | 株式会社共和キカイ | Lumber sawing method on a two-axis circular saw |
-
1996
- 1996-12-23 CA CA002193794A patent/CA2193794A1/en not_active Abandoned
-
1997
- 1997-12-24 JP JP9370226A patent/JPH10193301A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6929043B2 (en) | 2001-07-24 | 2005-08-16 | Valley Machine Works Ltd. | Optimized board edger and method of operation thereof |
| CN112109149A (en) * | 2019-06-20 | 2020-12-22 | 宁波良业电器有限公司 | Handheld electric circular saw |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10193301A (en) | 1998-07-28 |
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