US20230144749A1 - Electric saw - Google Patents
Electric saw Download PDFInfo
- Publication number
- US20230144749A1 US20230144749A1 US17/520,167 US202117520167A US2023144749A1 US 20230144749 A1 US20230144749 A1 US 20230144749A1 US 202117520167 A US202117520167 A US 202117520167A US 2023144749 A1 US2023144749 A1 US 2023144749A1
- Authority
- US
- United States
- Prior art keywords
- screw
- rod
- passage
- cutting head
- cutting
- 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
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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
- B23D45/04—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever
- B23D45/042—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever with the saw blade carried by a pivoted lever
- B23D45/044—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever with the saw blade carried by a pivoted lever the saw blade being adjustable according to angle of cut
-
- 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
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/02—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of frames; of guiding arrangements for work-table or saw-carrier
-
- 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
- B23D45/04—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever
- B23D45/042—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever with the saw blade carried by a pivoted lever
-
- 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
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
-
- 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
- B27B5/29—Details; Component parts; Accessories
Definitions
- the present invention is applicable in the sector of cutting machines, and in particular saws, comprising a cutting head mounted on a frame by means of a shaft provided with a cutting disc and means for adjusting the lateral inclination and vertical displacement of said cutting head.
- electric saws which comprise a frame mounted on a table for supporting the pieces to be cut, and a cutting head equipped with a cutting disc and a drive motor for driving the same.
- the cutting head is mounted on the frame with the possibility of rotation in the vertical direction to vary the cutting depth; further comprising a height-adjustable stop which allows limiting the descent of the head and therefore the cutting depth of the saw.
- the adjustable stop comprises a bolt threadedly mounted on the cutting head or on the frame of the saw; the bolt has an adjustable height and rests respectively against the frame or against the cutting head to limit the downward movement of the head and consequently the cutting depth to a greater or lesser extent.
- the technical problem posed is the development of an adjustable stop that facilitates and simplifies the variation of height thereof, when the cutting depth of the saw is to be varied.
- the electric saw of the invention comprising a base, a frame mounted on the base, a cutting head carrying a cutting disc and a drive motor for driving the same, a rotating shaft of the cutting head in the vertical direction to vary the cutting depth and an adjustable stop limiting the cutting depth, has technical features that considerably simplify the positioning and fixing of said stop at different heights to make cuts of different depths.
- the aforementioned adjustable stop comprises: a smooth rod (without thread) mounted in a through manner, with the possibility of longitudinal sliding in a passage defined in the cutting head, and facing a fixed stop for supporting the rod defined on the frame of the saw; and a screw for lateral tightening and fixing of said rod inside the passage, at the desired height.
- Said fixing screw comprises an actuation knob and is threadedly mounted in a threaded hole defined in the cutting head and leading into the mounting passage of the rod limiting the cutting depth.
- the fixing screw, the threaded hole and the threads thereof are dimensioned to fix or release the rod quickly, by rotating the screw less than 180°.
- the passage for mounting the rod is oriented vertically, and has adequate clearance for mounting and lowering the rod, by gravity, therein, so that it is enough to release the rod while the cutting head is in the upper resting position, such that said rod descends by gravity until it contacts the fixed stop of the frame. To adjust the cutting depth, it is enough to lower the head until the desired cutting depth is reached and fix the rod by rotating the actuation knob of the screw in the tightening direction.
- This operation is particularly fast and simple, since it is enough to release the rod and lower the cutting head to the cutting height desired by the user, such that said rod is automatically placed in the corresponding position with respect to the head. Once fixed in said position, the rod prevents the cutting head from descending beyond the position previously chosen by the user, making successive cuts with the same depth.
- FIG. 1 shows a profile view of an exemplary embodiment of the electric saw of the invention, wherein the rotating shaft of the cutting head in the vertical direction and the adjustable stop for adjusting the cutting depth can be observed.
- FIGS. 2 to 4 show partial profile views of the saw of FIG. 1 , sectioned along a vertical plane, wherein the cutting head and the adjustable stop can be seen in different positions.
- FIG. 5 shows a perspective detail view of the adjustable stop for adjusting the cutting depth.
- the electric saw of the invention comprises a base ( 1 ), a frame ( 2 ) mounted on the base and a cutting head ( 3 ) carrying a cutting disc ( 31 ) driven by an electric motor.
- Said cutting head ( 3 ) is mounted on the frame ( 2 ) by means of a rotating shaft ( 4 ) in the vertical direction, to enable cuts of different depths to be made.
- the cutter comprises an adjustable stop, limiting the cutting depth, referenced as a whole as ( 5 ).
- the aforementioned adjustable stop ( 5 ) comprises: a smooth, non-threaded rod ( 51 ), provided at the upper end thereof with a knob ( 52 ) and mounted in a through manner, with the possibility of longitudinal sliding, in a passage ( 53 ) defined in the cutting head ( 3 ), and facing a fixed stop ( 21 ) defined on the frame ( 2 ); the aforementioned adjustable stop ( 5 ) comprises a screw ( 54 ) for lateral tightening and fixing of said rod ( 51 ) at the desired height.
- Said screw ( 54 ) for lateral tightening and fixing of the rod ( 51 ) comprises an actuation knob ( 55 ) and is mounted in a threaded hole defined in the cutting head ( 3 ) and leading into the mounting passage ( 53 ) of the rod ( 51 ).
- the rod ( 51 ) has a flat face ( 51 a ) facing the screw ( 54 ) for lateral tightening and fixing of said rod ( 51 ).
- the fixing screw ( 54 ) and the threads of said screw and of the threaded mounting hole thereof are dimensioned to fix or release the rod quickly, by rotating the actuation knob ( 55 ) of an amplitude less than 180°.
- the passage ( 53 ) is oriented vertically, so that when the actuation knob ( 55 ) is rotated in a direction of loosening the screw ( 54 ), the rod ( 51 ) descends by gravity until it rests with the end thereof on the fixed stop ( 21 ) of the frame ( 2 ).
- the height position of the rod ( 51 ) is automatically adjusted with respect to the cutting head ( 3 ), it being enough to rotate the actuation knob ( 55 ) in the direction of tightening the screw ( 54 ) such that the rod ( 51 ) is fixed in the chosen position and remains in the same relative position with respect to the cutting head ( 3 ), as shown in FIG. 5 , to make successive cuts at the previously selected depth.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
Abstract
The invention relates to an electric saw comprising: a frame (2) mounted on a base (1), a cutting head (3) mounted on the frame by using a rotating shaft (4) in the vertical direction and an adjustable stop (5) limiting the descent of the head and the cutting depth. The adjustable stop (5) comprises: a rod (51) mounted in a through manner, with the possibility of longitudinal sliding, in a passage (53) defined in the cutting head (3) and facing a fixed stop (21) defined in the frame (2); and a screw (54) for lateral tightening and fixing of the rod (51) inside the passage (53). The screw (54) comprises an actuation knob (55) and is threadedly mounted in a hole defined in the cutting head (3) and leading into the mounting passage (53) of the rod (51).
Description
- The present invention is applicable in the sector of cutting machines, and in particular saws, comprising a cutting head mounted on a frame by means of a shaft provided with a cutting disc and means for adjusting the lateral inclination and vertical displacement of said cutting head.
- Currently, electric saws are known which comprise a frame mounted on a table for supporting the pieces to be cut, and a cutting head equipped with a cutting disc and a drive motor for driving the same.
- In saws of this type, the cutting head is mounted on the frame with the possibility of rotation in the vertical direction to vary the cutting depth; further comprising a height-adjustable stop which allows limiting the descent of the head and therefore the cutting depth of the saw.
- Document U.S. Pat. No. 9,016,180 describes a saw of this type, wherein the cutting head has an adjustable stop configured to limit a range of the cutting movement, specifically the descent of the head and the cutting depth carried out by the cutting disc on the piece to be cut.
- In said document, the adjustable stop comprises a bolt threadedly mounted on the cutting head or on the frame of the saw; the bolt has an adjustable height and rests respectively against the frame or against the cutting head to limit the downward movement of the head and consequently the cutting depth to a greater or lesser extent.
- One drawback of this adjustable stop is that adjustment of the height of the bolt is slow and laborious since every time the cutting depth is to be varied, it is necessary to rotate the bolt so that it is screwed or unscrewed on the head or on the frame, until the desired height is reached. To fix the bolt in the chosen position on the same, a locknut is mounted which must also be rotated until it contacts the head or the frame, which further increases the time needed to position and fix the adjustable stop at the chosen height.
- Thus, the technical problem posed is the development of an adjustable stop that facilitates and simplifies the variation of height thereof, when the cutting depth of the saw is to be varied.
- The electric saw of the invention, comprising a base, a frame mounted on the base, a cutting head carrying a cutting disc and a drive motor for driving the same, a rotating shaft of the cutting head in the vertical direction to vary the cutting depth and an adjustable stop limiting the cutting depth, has technical features that considerably simplify the positioning and fixing of said stop at different heights to make cuts of different depths.
- According to the invention, the aforementioned adjustable stop comprises: a smooth rod (without thread) mounted in a through manner, with the possibility of longitudinal sliding in a passage defined in the cutting head, and facing a fixed stop for supporting the rod defined on the frame of the saw; and a screw for lateral tightening and fixing of said rod inside the passage, at the desired height.
- Said fixing screw comprises an actuation knob and is threadedly mounted in a threaded hole defined in the cutting head and leading into the mounting passage of the rod limiting the cutting depth.
- The fixing screw, the threaded hole and the threads thereof are dimensioned to fix or release the rod quickly, by rotating the screw less than 180°.
- The passage for mounting the rod is oriented vertically, and has adequate clearance for mounting and lowering the rod, by gravity, therein, so that it is enough to release the rod while the cutting head is in the upper resting position, such that said rod descends by gravity until it contacts the fixed stop of the frame. To adjust the cutting depth, it is enough to lower the head until the desired cutting depth is reached and fix the rod by rotating the actuation knob of the screw in the tightening direction.
- This operation is particularly fast and simple, since it is enough to release the rod and lower the cutting head to the cutting height desired by the user, such that said rod is automatically placed in the corresponding position with respect to the head. Once fixed in said position, the rod prevents the cutting head from descending beyond the position previously chosen by the user, making successive cuts with the same depth.
- As a complement to the description provided herein, and for the purpose of helping to make the features of the invention more readily understandable, the present specification is accompanied by a set of drawings which, by way of illustration and not limitation, represent the following:
-
FIG. 1 shows a profile view of an exemplary embodiment of the electric saw of the invention, wherein the rotating shaft of the cutting head in the vertical direction and the adjustable stop for adjusting the cutting depth can be observed. -
FIGS. 2 to 4 show partial profile views of the saw ofFIG. 1 , sectioned along a vertical plane, wherein the cutting head and the adjustable stop can be seen in different positions. -
FIG. 5 shows a perspective detail view of the adjustable stop for adjusting the cutting depth. - As can be seen in
FIG. 1 , the electric saw of the invention comprises a base (1), a frame (2) mounted on the base and a cutting head (3) carrying a cutting disc (31) driven by an electric motor. - Said cutting head (3) is mounted on the frame (2) by means of a rotating shaft (4) in the vertical direction, to enable cuts of different depths to be made.
- The cutter comprises an adjustable stop, limiting the cutting depth, referenced as a whole as (5).
- The aforementioned adjustable stop (5) comprises: a smooth, non-threaded rod (51), provided at the upper end thereof with a knob (52) and mounted in a through manner, with the possibility of longitudinal sliding, in a passage (53) defined in the cutting head (3), and facing a fixed stop (21) defined on the frame (2); the aforementioned adjustable stop (5) comprises a screw (54) for lateral tightening and fixing of said rod (51) at the desired height.
- Said screw (54) for lateral tightening and fixing of the rod (51) comprises an actuation knob (55) and is mounted in a threaded hole defined in the cutting head (3) and leading into the mounting passage (53) of the rod (51).
- In the example shown, the rod (51) has a flat face (51 a) facing the screw (54) for lateral tightening and fixing of said rod (51).
- The fixing screw (54) and the threads of said screw and of the threaded mounting hole thereof are dimensioned to fix or release the rod quickly, by rotating the actuation knob (55) of an amplitude less than 180°.
- As shown in
FIG. 3 , the passage (53) is oriented vertically, so that when the actuation knob (55) is rotated in a direction of loosening the screw (54), the rod (51) descends by gravity until it rests with the end thereof on the fixed stop (21) of the frame (2). - As shown in
FIG. 3 , when lowering the cutting head (3) to the desired cutting depth, the height position of the rod (51) is automatically adjusted with respect to the cutting head (3), it being enough to rotate the actuation knob (55) in the direction of tightening the screw (54) such that the rod (51) is fixed in the chosen position and remains in the same relative position with respect to the cutting head (3), as shown inFIG. 5 , to make successive cuts at the previously selected depth. - Having sufficiently described the nature of the invention, in addition to a preferred exemplary embodiment, it is hereby stated for the relevant purposes that the materials, shape, size and layout of the described elements may be modified, provided that it does not imply altering the essential features of the invention claimed below.
Claims (6)
1. An electric saw, comprising:
a base, a frame mounted on the base, a cutting head provided with a cutting disc and mounted on the frame via a rotating shaft of the cutting head in a vertical direction, and an adjustable stop limiting a descent of the cutting head and the cutting depth;
wherein the adjustable stop comprises:
a non-threaded rod provided with an actuation knob, mounted in a through manner, to allow longitudinal sliding, in a passage defined in the cutting head and facing a fixed stop defined on the frame; and
a screw configured to laterally tighten and fix said rod inside the passage, said screw being provided with an actuation knob and mounted in a threaded hole defined in the cutting head and leading into the passage in which the rod is mounted;
wherein the non-threaded rod has a flat face along its entire length, said flat face being aligned with a corresponding flat face of the passage and facing the screw for the screw to laterally tighten and fix said rod within the passage.
2. The electric saw according to claim 1 , wherein the screw, threads of said screw and threads of the threaded hole in which the screw is mounted are dimensioned to fix or release the rod by rotating the actuation knob of the screw less than 180°.
3.-4. (canceled)
5. The electric saw according to claim 1 , wherein the passage is oriented in a vertical plane and configured to allow the rod to mount and lower by gravity therein when the actuation knob of the screw is rotated in a direction of loosening the screw.
6. The electric saw according to claim 2 , wherein the passage is oriented in a vertical plane and configured to allow the rod to mount and lower by gravity therein when the actuation knob of the screw is rotated in a direction of loosening the screw.
7.-8. (canceled)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/520,167 US11642732B1 (en) | 2021-11-05 | 2021-11-05 | Electric saw |
CA3140823A CA3140823A1 (en) | 2021-11-05 | 2021-11-30 | Electric saw |
CN202111600985.8A CN114101787A (en) | 2021-11-05 | 2021-12-24 | Electric saw |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/520,167 US11642732B1 (en) | 2021-11-05 | 2021-11-05 | Electric saw |
Publications (2)
Publication Number | Publication Date |
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US11642732B1 US11642732B1 (en) | 2023-05-09 |
US20230144749A1 true US20230144749A1 (en) | 2023-05-11 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US17/520,167 Active US11642732B1 (en) | 2021-11-05 | 2021-11-05 | Electric saw |
Country Status (3)
Country | Link |
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US (1) | US11642732B1 (en) |
CN (1) | CN114101787A (en) |
CA (1) | CA3140823A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN117921083B (en) * | 2024-03-22 | 2024-05-28 | 山西泰宝科技有限公司 | Automatic slotting machine of carousel formula |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11324478A (en) * | 1998-05-19 | 1999-11-26 | Noriaki Nakakura | Door stop |
US9016180B2 (en) * | 2002-11-01 | 2015-04-28 | Black & Decker Inc. | Tile saw |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2912874Y (en) * | 2006-01-26 | 2007-06-20 | 苏州宝时得电动工具有限公司 | Sliding oblique-cutting saw |
CN201045078Y (en) * | 2007-06-12 | 2008-04-09 | 江西洪都航空工业集团有限责任公司 | Airplane electrochemical cell mounting gap regulating mechanism |
JP5649834B2 (en) * | 2010-03-04 | 2015-01-07 | 株式会社マキタ | Hand-held cutting tool |
-
2021
- 2021-11-05 US US17/520,167 patent/US11642732B1/en active Active
- 2021-11-30 CA CA3140823A patent/CA3140823A1/en active Pending
- 2021-12-24 CN CN202111600985.8A patent/CN114101787A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11324478A (en) * | 1998-05-19 | 1999-11-26 | Noriaki Nakakura | Door stop |
US9016180B2 (en) * | 2002-11-01 | 2015-04-28 | Black & Decker Inc. | Tile saw |
Also Published As
Publication number | Publication date |
---|---|
US11642732B1 (en) | 2023-05-09 |
CA3140823A1 (en) | 2023-05-05 |
CN114101787A (en) | 2022-03-01 |
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