CN105690331A - Electric circular saw cutting control device - Google Patents
Electric circular saw cutting control device Download PDFInfo
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- CN105690331A CN105690331A CN201410693460.7A CN201410693460A CN105690331A CN 105690331 A CN105690331 A CN 105690331A CN 201410693460 A CN201410693460 A CN 201410693460A CN 105690331 A CN105690331 A CN 105690331A
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- saw blade
- connecting rod
- plane
- blade assembly
- base plate
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Abstract
The invention discloses an electric circular saw cutting control device. The electric circular saw cutting control device is fixed to a bottom plate of an electric circular saw and comprises a saw blade supporting assembly which is connected with the bottom plate and a saw blade assembly. The saw blade supporting assembly controls the moving track of the saw blade assembly relative to the bottom plate to be perpendicular through a connecting rod and a hinge mechanism connected with the connecting rod. The saw blade supporting assembly comprises a first end supporting assembly and a second end supporting assembly, wherein the first end supporting assembly is used for supporting the front end of the saw blade assembly so that the moving track of the front end of the saw blade assembly relative to the bottom plate can be perpendicular, and the second end supporting assembly is used for supporting the rear end of the saw blade assembly so that the moving track of the rear end of the saw blade assembly relative to the bottom plate can be perpendicular. A saw blade moves perpendicularly relative to the bottom plate during cutting of the electric circular saw, the situation that the moving track of a saw blade in the prior art is an arc is changed, and therefore cutting can be more accurate and precise, the visibility effect is improved through the simple connecting rod design, and the cutting process is convenient to control.
Description
Technical field
The present invention relates to field of power tools, particularly relate to a kind of electrotrephine cutting control device。
Background technology
Electrotrephine is a kind of instrument driving saw blade to carry out sawing action for power by drive mechanism with single phase series motor, has safe and reliable, rational in infrastructure, work efficiency high。It is applicable to timber, fibre board, plastics and flexible cable and similar material are carried out sawing action。
Usually, electrotrephine track portion is to be moved in arc groove by bearing to realize the action that saw blade down cuts, and in saw blade cutting process, track is circular arc, it is impossible to realize vertical rectilinear motion；Visual poor。Cutting accuracy is required higher occasion, being the huge test to electrotrephine operator's experience, this problem has been increasingly becoming electrotrephine and has obtained the obstruction being widely recognized as。
In development in science and technology rapid today, the demand diversified, high-precision that electrotrephine is cut by people is day by day obvious, and in electrotrephine field, the problems referred to above are prominent and urgently to be resolved hurrily gradually。
Summary of the invention
Based on this, it is necessary to for the problems referred to above, it is provided that a kind of electrotrephine cutting control device。
Electrotrephine cutting control device of the present invention, is fixed on the base plate of electrotrephine, props up support component including saw blade, and described saw blade props up support component and is connected with described base plate and saw blade assembly；
Described saw blade props up support component, is vertical for controlling the movement locus of the relatively described base plate of described saw blade assembly。
Wherein in an embodiment, described electrotrephine cutting control device, also include the elastic parts for supporting described saw blade assembly and described base plate。
Wherein in an embodiment, described elastic parts is spring。
Wherein in an embodiment, described elastic parts is high elastic rubber。
Wherein in an embodiment, described saw blade props up support component, including propping up support component for supporting the first end that the movement locus of the relatively described base plate in described saw blade assembly front end is vertical, prop up support component for supporting the second end that the movement locus of the relatively described base plate in described saw blade assembly rear end is vertical。
Wherein in an embodiment, described first end props up support component and includes first connecting rod mechanism, second connecting rod mechanism；Described second end props up support component and includes third connecting rod mechanism, fourth link mechanism；
Described first connecting rod mechanism is used for controlling described saw blade assembly at the first move in plane；
Described second connecting rod mechanism is used for controlling described saw blade assembly at the second move in plane；
Described third connecting rod mechanism is used for controlling described saw blade assembly at the 3rd move in plane；
Described fourth link mechanism is used for controlling described saw blade assembly and moves in fourth plane；
Described first plane, the second plane, the 3rd plane, fourth plane are each perpendicular to the plane at described base plate place；
Described first plane intersects with described second plane；
Described 3rd plane intersects with described fourth plane。
Wherein in an embodiment, described first connecting rod mechanism includes first connecting rod, second connecting rod；One end of described first connecting rod is connected with described base plate by linkwork, and the other end is connected with one end of described second connecting rod by linkwork, and the other end of described second connecting rod is connected with described saw blade assembly by linkwork；
Described second connecting rod mechanism includes third connecting rod, fourth link；One end of described third connecting rod is connected with described base plate by linkwork, and the other end is connected with one end of described fourth link by linkwork, and the other end of described fourth link is connected with described saw blade assembly by linkwork；
Described third connecting rod mechanism includes the 5th connecting rod, six-bar linkage；One end of described six-bar linkage is connected on described base plate by linkwork, and the other end is connected with one end of described 5th connecting rod by linkwork, and the other end of described 5th connecting rod is connected with described saw blade assembly by linkwork；
Described fourth link mechanism includes seven-link assembly, the 8th connecting rod；One end of described seven-link assembly is connected on described base plate by linkwork, and the other end is connected with one end of described 8th connecting rod by linkwork, and the other end of described 8th connecting rod is connected with described saw blade assembly by linkwork。
Wherein in an embodiment, described first plane is vertical with described second plane；Described 3rd plane is vertical with described fourth plane。
Wherein in an embodiment, described first plane is parallel with described 3rd plane；Or described second plane is parallel with described fourth plane。
Wherein in an embodiment, described saw blade props up support component, also include one end to be connected with described first connecting rod mechanism, the other end is connected with described third connecting rod mechanism, or one end is connected with described second connecting rod mechanism, the other end is connected with described fourth link mechanism, is used for controlling the synkinetic linkage unit in described saw blade assembly rear and front end。
Above-mentioned electrotrephine cutting control device, props up support component by saw blade, is fixed in the plane corresponding with base plate position by saw blade assembly, and controls saw blade assembly opposed bottom and be in vertical motion, to realize the cutting function of annular saw。The present invention props up the perfection of connecting rod, ingehious design in support component only by saw blade, when electrotrephine is cut, the motion of saw blade opposed bottom is vertical, changing saw blade movement locus in prior art is the situation of camber line, cutting so can be made more accurate, accurately, simple link design too increases visual effect, it is simple to control cutting process。
Accompanying drawing explanation
Fig. 1 is the structural representation of electrotrephine cutting control device；
Fig. 2 is the lateral side view of electrotrephine cutting control device shown in Fig. 1；
Fig. 3 is that the saw blade assembly when electrotrephine works of electrotrephine cutting control device shown in Fig. 1 exposes the structural representation of base plate；
Fig. 4 is the structural representation in electrotrephine cutting control device use procedure shown in Fig. 1；
Fig. 5 is the front view of electrotrephine cutting control device shown in Fig. 1；
Fig. 6 is the side view of electrotrephine cutting control device shown in Fig. 1。
Description of reference numerals:
First connecting rod 1, second connecting rod 2, third connecting rod 3, fourth link 4, the 5th connecting rod 5, six-bar linkage 6, seven-link assembly 7, the 8th connecting rod 8, the 9th connecting rod 9, saw blade 10, linkwork 11, spring 15, the first end props up support component 20, and the second end props up support component 30, base plate 40。
Detailed description of the invention
For further setting forth the effect of technological means that the present invention takes and acquirement, below in conjunction with accompanying drawing and preferred embodiment, to technical scheme, carry out clear and complete description。
As shown in Figure 1-2, a kind of electrotrephine cutting control device of the present embodiment, it is fixed on the base plate 40 of electrotrephine, props up support component including saw blade, saw blade props up support component and is connected with base plate 40 and saw blade assembly。
Saw blade props up support component, and the movement locus being controlled saw blade assembly opposed bottom 40 by the linkwork 11 of connecting rod and connection connecting rod is vertical。
Wherein in an embodiment, electrotrephine cutting control device also includes the elastic parts for supporting saw blade assembly and base plate 40。
As it is shown in figure 1, in this embodiment, the connected mode of elastic parts and saw blade assembly and base plate 40 specifically includes three kinds: the first fixes for elastic parts one end and saw blade assembly, and the other end is unsettled。The second is that elastic parts one end is fixed with base plate 40, and the other end is unsettled。The third is that elastic parts two ends are fixed with base plate 40 with saw blade assembly respectively。Elastic parts compression during saw blade component operation, when saw blade assembly quits work, saw blade assembly is bounced off base plate 40 by elastic parts。When electrotrephine does not need work, make saw blade assembly must not expose base plate 40 by elastic parts, in order to avoid hurting sb.'s feelings。
As Figure 2-3, wherein in an embodiment, elastic parts is spring 15, is fixed on base plate 40。When electrotrephine is operated, spring 15 should be compacted, and circular saw blade 10 exposes base plate 40, cuts。After cutting completes, saw blade assembly is rebounded original place by spring 15, it is ensured that circular saw blade 10 must not expose base plate 40, in order to avoid the people that injury is around。Or cooperation buckle structure, fixes saw blade assembly, and guarantee that circular saw blade 10 must not expose base plate 40, in order to avoid the people that injury is around。
Wherein in an embodiment, elastic parts is high elastic rubber。Use high elastic rubber to serve as elastic parts, and in conjunction with structures such as buckles, when electrotrephine is operated, high elastic rubber should be compacted, and circular saw blade 10 exposes base plate 40, cuts。After cutting completes, saw blade assembly is upspring by high elastic rubber, and by buckle structure, is fixed by saw blade assembly, and guarantee that circular saw blade 10 must not expose base plate 40, in order to avoid the people that injury is around。
As shown in Figure 5, wherein in an embodiment, saw blade props up support component and includes the first end that the movement locus for controlling saw blade assembly front end opposed bottom 40 is vertical and prop up support component 20, props up support component 30 for controlling the second end that the movement locus of saw blade assembly rear end opposed bottom 40 is vertical。In this embodiment, the first end props up support component 20 and is arranged on the position corresponding with saw blade assembly front end, and the movement locus of the front end opposed bottom 40 for controlling saw blade assembly is vertical。Second end props up support component 30 and is arranged on the position corresponding with saw blade assembly rear end, and the movement locus of the rear end opposed bottom 40 for controlling saw blade assembly is vertical。
In the present embodiment, the first end props up support component 20 and includes first connecting rod mechanism, second connecting rod mechanism。First connecting rod mechanism is used for controlling saw blade assembly at the first move in plane。First connecting rod mechanism includes first connecting rod 1, second connecting rod 2。One end of first connecting rod 1 is connected with base plate 40 by linkwork 11, and the other end is connected with one end of second connecting rod 2 by linkwork 11, and the other end of second connecting rod 2 is connected with saw blade assembly by linkwork 11。In this embodiment, in first connecting rod mechanism, the articulated manner of linkwork 11 for connecting is identical, so that first connecting rod 1, second connecting rod 2 in first connecting rod mechanism control saw blade assembly at the first move in plane。
In this embodiment, second connecting rod mechanism is used for controlling saw blade assembly at the second move in plane。Second connecting rod mechanism includes third connecting rod 3, fourth link 4。One end of third connecting rod 3 is connected with base plate 40 by linkwork 11, and the other end is connected with one end of fourth link 4 by linkwork 11, and the other end of fourth link 4 is connected with saw blade assembly by linkwork 11。In this embodiment, in second connecting rod mechanism, the articulated manner of linkwork 11 for connecting is identical, so that third connecting rod 3, fourth link 4 in second connecting rod mechanism control saw blade assembly at the second move in plane。
In this embodiment, the first plane, the second plane are each perpendicular to the plane at base plate 40 place。First connecting rod mechanism connects saw blade assembly, and controls saw blade assembly at the first move in plane, and second connecting rod mechanism connects saw blade assembly, and controls saw blade assembly at the second move in plane。Therefore, the first plane and the second plane are perpendicular to base plate 40, and the movement locus of the front end opposed bottom 40 that just can realize saw blade assembly is vertical。
In this embodiment, the first plane intersects with the second plane。Saw blade assembly front end is under first connecting rod mechanism with second connecting rod mechanism co-controlling, simultaneously at the first plane and the second move in plane, it is known that the intersection that movement locus is the first plane and the second plane of saw blade assembly front end。Owing to the first plane and the second plane are each perpendicular to the plane at base plate place, therefore the intersection of the first plane and the second plane is also perpendicularly to the plane at base plate place, namely the movement locus of saw blade assembly front end props up the plane being perpendicular to base plate place under the control of support component at the first end。
In the present embodiment, the second end props up support component 30 and includes third connecting rod mechanism, fourth link mechanism。Third connecting rod mechanism is used for controlling saw blade assembly at the 3rd move in plane。Third connecting rod mechanism includes the 5th connecting rod 5, six-bar linkage 6。One end of six-bar linkage 6 is connected on base plate 40 by linkwork 11, and the other end is connected with one end of the 5th connecting rod 5 by linkwork 11, and the other end of the 5th connecting rod 5 is connected with saw blade assembly by linkwork 11。In this embodiment, in third connecting rod mechanism, the articulated manner of linkwork 11 for connecting is identical, so that the 5th connecting rod 5, six-bar linkage 6 in third connecting rod mechanism control saw blade assembly at the 3rd move in plane。
In this embodiment, fourth link mechanism is used for controlling saw blade assembly and moves in fourth plane。Fourth link mechanism includes seven-link assembly the 7, the 8th connecting rod 8。One end of seven-link assembly 7 is connected on base plate 40 by linkwork 11, and the other end is connected with one end of the 8th connecting rod 8 by linkwork 11, and the other end of the 8th connecting rod 8 is connected with saw blade assembly by linkwork 11。In this embodiment, in fourth link mechanism, the articulated manner of linkwork 11 for connecting is identical, so that seven-link assembly the 7, the 8th connecting rod 8 in fourth link mechanism controls saw blade assembly and moves in fourth plane。
In this embodiment, the 3rd plane, fourth plane are each perpendicular to the plane at base plate 40 place。Third connecting rod mechanism connects saw blade assembly, and controls saw blade assembly at the 3rd move in plane, and fourth link mechanism connects saw blade assembly, and controls saw blade assembly and move in fourth plane。Therefore, the 3rd plane and fourth plane are perpendicular to base plate 40, in order to the movement locus of the rear end opposed bottom 40 realizing saw blade assembly is vertical。
In this embodiment, the 3rd plane intersects with fourth plane。, under third connecting rod mechanism with fourth link mechanism co-controlling, move, it is known that the intersection that movement locus is the 3rd plane and fourth plane of saw blade assembly rear end in the rear end of saw blade assembly simultaneously in the 3rd plane with fourth plane。Owing to the 3rd plane and fourth plane are each perpendicular to the plane at base plate place, therefore the intersection of the 3rd plane and fourth plane is also perpendicularly to the plane at base plate place, namely the movement locus of saw blade assembly rear end props up the plane being perpendicular to base plate place under the control of support component at the second end。
Owing to the movement locus of the rear and front end of saw blade assembly is each perpendicular to the plane at base plate place, therefore the movement locus of whole saw blade props up the plane being perpendicular to base plate place under the control of support component at saw blade。
Wherein in an embodiment, the first plane is vertical with the second plane。3rd plane is vertical with fourth plane。
Wherein in an embodiment, the first plane is parallel with the 3rd plane。In this embodiment, saw blade props up support component, also includes one end and is connected with first connecting rod mechanism, and the other end is connected with third connecting rod mechanism, is used for controlling synkinetic first linkage unit in saw blade assembly rear and front end。
As it is shown in figure 5, the first linkage unit is the 9th connecting rod 9, the 9th connecting rod 9 can be individually designed, and its one end is connected with first connecting rod mechanism by linkwork 11, and the other end is connected with third connecting rod mechanism by linkwork 11。9th connecting rod 9 can with the 5th one-body molded design of connecting rod 5 in the second connecting rod 2 in first connecting rod mechanism, third connecting rod mechanism, the 9th connecting rod 9, second connecting rod the 2, the 5th connecting rod 5 co-controlling saw blade can be made to move both vertically to base plate 40, compared with only passing through the 9th connecting rod 9 control, greatly strengthen its coordinated signals intensity。
Wherein in an embodiment, the second plane is parallel with fourth plane。In this embodiment, saw blade props up support component and also includes one end and be connected with second connecting rod mechanism, and the other end is connected with fourth link mechanism, is used for controlling synkinetic second linkage unit in saw blade assembly rear and front end。Second linkage unit is the tenth connecting rod, and the tenth connecting rod can be individually designed, and its one end is connected with second connecting rod mechanism by linkwork 11, and the other end is connected with fourth link mechanism by linkwork 11。Tenth connecting rod can with the 8th one-body molded design of connecting rod 8 in the fourth link 4 in second connecting rod mechanism, fourth link mechanism, the tenth connecting rod, fourth link the 4, the 8th connecting rod 8 co-controlling saw blade can be made to move both vertically to base plate 40, compared with only passing through the tenth connecting rod control, greatly strengthen its coordinated signals intensity。
As shown in figures 1 to 6, the specific works process of electrotrephine cutting control device is: electrotrephine is when off working state, and circular saw blade 10 does not expose base plate 40。When electrotrephine startup work, moving both vertically of saw blade opposed bottom 40 is realized by bar linkage structure, the front end of base plate 40 with saw blade assembly is linked up by first connecting rod 1, second connecting rod 2, third connecting rod 3, fourth link 4 by linkwork 11, and the front end controlling saw blade assembly is vertical to the movement locus of base plate 40。Base plate 40 and saw blade assembly are linked up by the 5th connecting rod 5, six-bar linkage 6, seven-link assembly the 7, the 8th connecting rod 8 respectively through linkwork 11, linkwork 11, and the rear end controlling saw blade assembly is vertical to the movement locus of base plate 40。So that the movement locus of saw blade assembly entirety opposed bottom 40 is vertical。9th connecting rod the 9, the tenth connecting rod controls the rear and front end of saw blade assembly and moves downward simultaneously, further ensures that saw blade assembly is vertical to the movement locus of base plate 40。After cutting completes, by elastic parts, saw blade assembly is rebounded。To guarantee that electrotrephine is not by external force situation, circular saw blade 10 does not expose base plate group, it addition, position when not working also by the structure stationary saw chip module such as buckle, screw。
Compared with traditional technology, this electrotrephine cutting control device, props up support component by saw blade, is fixed in the plane corresponding with base plate 40 position by saw blade assembly, and control saw blade assembly opposed bottom 40 and be in vertical motion, to realize the cutting function of annular saw。The present invention only by connecting rod perfection, design cleverly, when electrotrephine is cut, the motion of saw blade opposed bottom 40 is vertical, changing saw blade movement locus in prior art is the situation of camber line, cutting so can be made more accurate, accurately, simple link design too increases visual effect, it is simple to control cutting process。It addition, when electrotrephine does not need work, make saw blade assembly must not expose base plate 40 by elastic parts, in order to avoid hurting sb.'s feelings。
Embodiment described above only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention。It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention。Therefore, the protection domain of patent of the present invention should be as the criterion with claims。
Claims (10)
1. an electrotrephine cutting control device, is fixed on the base plate of electrotrephine, it is characterised in that including saw blade and prop up support component, described saw blade props up support component and is connected with described base plate and saw blade assembly；
Described saw blade props up support component, is vertical for controlling the movement locus of the relatively described base plate of described saw blade assembly。
2. electrotrephine cutting control device according to claim 1, it is characterised in that described electrotrephine cutting control device, also includes the elastic parts for supporting described saw blade assembly and described base plate。
3. electrotrephine cutting control device according to claim 2, it is characterised in that described elastic parts is spring。
4. electrotrephine cutting control device according to claim 2, it is characterised in that described elastic parts is high elastic rubber。
5. electrotrephine cutting control device according to claim 1, it is characterized in that, described saw blade props up support component, including propping up support component for supporting the first end that the movement locus of the relatively described base plate in described saw blade assembly front end is vertical, prop up support component for supporting the second end that the movement locus of the relatively described base plate in described saw blade assembly rear end is vertical。
6. electrotrephine cutting control device according to claim 5, it is characterised in that described first end props up support component and includes first connecting rod mechanism, second connecting rod mechanism；Described second end props up support component and includes third connecting rod mechanism, fourth link mechanism；
Described first connecting rod mechanism is used for controlling described saw blade assembly at the first move in plane；
Described second connecting rod mechanism is used for controlling described saw blade assembly at the second move in plane；
Described third connecting rod mechanism is used for controlling described saw blade assembly at the 3rd move in plane；
Described fourth link mechanism is used for controlling described saw blade assembly and moves in fourth plane；
Described first plane, the second plane, the 3rd plane, fourth plane are each perpendicular to the plane at described base plate place；
Described first plane intersects with described second plane；
Described 3rd plane intersects with described fourth plane。
7. electrotrephine cutting control device according to claim 6, it is characterised in that described first connecting rod mechanism includes first connecting rod, second connecting rod；One end of described first connecting rod is connected with described base plate by linkwork, and the other end is connected with one end of described second connecting rod by linkwork, and the other end of described second connecting rod is connected with described saw blade assembly by linkwork；
Described second connecting rod mechanism includes third connecting rod, fourth link；One end of described third connecting rod is connected with described base plate by linkwork, and the other end is connected with one end of described fourth link by linkwork, and the other end of described fourth link is connected with described saw blade assembly by linkwork；
Described third connecting rod mechanism includes the 5th connecting rod, six-bar linkage；One end of described six-bar linkage is connected on described base plate by linkwork, and the other end is connected with one end of described 5th connecting rod by linkwork, and the other end of described 5th connecting rod is connected with described saw blade assembly by linkwork；
Described fourth link mechanism includes seven-link assembly, the 8th connecting rod；One end of described seven-link assembly is connected on described base plate by linkwork, and the other end is connected with one end of described 8th connecting rod by linkwork, and the other end of described 8th connecting rod is connected with described saw blade assembly by linkwork。
8. electrotrephine cutting control device according to claim 6, it is characterised in that described first plane is vertical with described second plane；Described 3rd plane is vertical with described fourth plane。
9. electrotrephine cutting control device according to claim 6, it is characterised in that described first plane is parallel with described 3rd plane；Or described second plane is parallel with described fourth plane。
10. electrotrephine cutting control device according to claim 9, it is characterized in that, described saw blade props up support component, also include one end to be connected with described first connecting rod mechanism, the other end is connected with described third connecting rod mechanism, or one end is connected with described second connecting rod mechanism, the other end is connected with described fourth link mechanism, is used for controlling the synkinetic linkage unit in described saw blade assembly rear and front end。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410693460.7A CN105690331B (en) | 2014-11-26 | 2014-11-26 | Electric circular saw cutting control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410693460.7A CN105690331B (en) | 2014-11-26 | 2014-11-26 | Electric circular saw cutting control device |
Publications (2)
| Publication Number | Publication Date |
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| CN105690331A true CN105690331A (en) | 2016-06-22 |
| CN105690331B CN105690331B (en) | 2017-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410693460.7A Active CN105690331B (en) | 2014-11-26 | 2014-11-26 | Electric circular saw cutting control device |
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| CN (1) | CN105690331B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109202172A (en) * | 2017-06-30 | 2019-01-15 | 苏州宝时得电动工具有限公司 | Portable electric annular saw |
| CN110681916A (en) * | 2018-07-06 | 2020-01-14 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN114515864A (en) * | 2022-01-27 | 2022-05-20 | 江苏和晖电动工具有限公司 | Novel single-hand saw |
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| DE10261743A1 (en) * | 2002-12-30 | 2004-07-22 | Robert Bosch Gmbh | Manual circular saw B27B |
| US20070101845A1 (en) * | 2005-10-07 | 2007-05-10 | Marcello Bettacchini | Saw |
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| DE19807439A1 (en) * | 1998-02-23 | 1999-08-26 | Bosch Gmbh Robert | Hand power tool as an angle grinder |
| WO2000003828A1 (en) * | 1998-07-16 | 2000-01-27 | Barrie Wyndham Firman | Hole cutting device |
| DE10261743A1 (en) * | 2002-12-30 | 2004-07-22 | Robert Bosch Gmbh | Manual circular saw B27B |
| US20070101845A1 (en) * | 2005-10-07 | 2007-05-10 | Marcello Bettacchini | Saw |
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| CN109202172A (en) * | 2017-06-30 | 2019-01-15 | 苏州宝时得电动工具有限公司 | Portable electric annular saw |
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| CN114515864A (en) * | 2022-01-27 | 2022-05-20 | 江苏和晖电动工具有限公司 | Novel single-hand saw |
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| Publication number | Publication date |
|---|---|
| CN105690331B (en) | 2017-12-29 |
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