CN103862102A - Double-saw blade electric circular saw - Google Patents
Double-saw blade electric circular saw Download PDFInfo
- Publication number
- CN103862102A CN103862102A CN201210533615.1A CN201210533615A CN103862102A CN 103862102 A CN103862102 A CN 103862102A CN 201210533615 A CN201210533615 A CN 201210533615A CN 103862102 A CN103862102 A CN 103862102A
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- saw blade
- gear
- saw
- electric circular
- transmission shaft
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
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Abstract
The invention relates to a double-saw blade electric circular saw. The double-saw blade electric circular saw comprises a motor, a first gear, a second gear, a first transmission shaft, a second transmission shaft, an inner saw blade, an outer saw blade and a press plate, the first gear and the second gear are driven to rotate by the motor, the first transmission shaft is firmly connected with the first transmission shaft, the second transmission shaft is firmly connected with the second gear, the first transmission shaft and the second transmission shaft are coaxial, the inner saw blade is mounted on the first transmission shaft, the outer saw blade is mounted on the second transmission shaft, the central lines of the inner and outer saw blades are overlapped, the press plate firmly presses the outer side of the outer saw blade, an interval is formed between the inner saw blade and the outer saw blade, the surface of the press plate towards the outer saw blade is formed with a bump, the outer saw blade is formed with a nick, the bump passes through the nick and is propped against the inner saw blade, wherein the height of the bump is larger than the thickness of the outer saw blade, and accordingly the interval of which the size value is equal to the difference between the height of the bump and the thickness of the outer saw blade is formed between the inner saw blade and the outer saw blade. The double-saw blade electric circular saw is simple in manufacturing technique and is lower in cost.
Description
Technical field
the present invention relates to a kind of two saw blade electric circular saw.
Background technology
existing pair of saw blade electric circular saw, in the time that saw blade moves for preventing between cutting element that large area contact produces high temperature and be provided with escapement between two saw blades.The disclosed Pair of saw blades of CN101557911A as open in Chinese invention patent, it is provided with all convex tendons of a ring at sawtooth end and makes to form certain gap between two saw blades, has guaranteed that the friction between two saw blades is small size contact, has reduced fricative temperature.But, establish all convex tendons of ring at sawtooth end and improved undoubtedly the difficulty of blades machining technique, reduce the qualification rate of saw blade finished product, make saw blade cost and use the cost of the annular saw of this saw blade to raise.
Summary of the invention
technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of improved electric circular saw is provided.
for solving the problems of the technologies described above, the present invention takes following technical scheme:
a kind of two saw blade electric circular saw, it comprises motor, driven the first gear and second gear of rotation by motor, the first power transmission shaft and the second driving shaft that are fixedly connected with the second gear with the first gear respectively and coaxially arrange, be arranged on respectively on the first power transmission shaft and second driving shaft and center line overlap interior saw blade and outer saw blade, and be pressed on the pressing plate in outer saw blade outside, between interior saw blade and outer saw blade, be formed with gap, pressing plate in the one side of outer saw blade, be formed with protuberance, on outer saw blade, offer breach, described protuberance is conflicted with interior saw blade through breach, wherein, the height of protuberance is greater than the thickness of outer saw blade, thereby between interior saw blade and outer saw blade, form the big or small gap that equals the difference of the thickness of protuberance height and outer saw blade.
according to further embodiment of the present invention: described protuberance is along the circumferential extension of pressing plate.
in a specific embodiment, protuberance can be have multiple, and multiple protuberance being circumferentially uniformly distributed along pressing plate.
further, the first described power transmission shaft is positioned at the periphery of second driving shaft.Second driving shaft comprises central shaft and axle sleeve, and outer saw blade is arranged on the axle sleeve of second driving shaft.Pressing plate is pressed on outer saw blade by bolt.
preferably, described the first gear and the second gear counter-rotate, and interior saw blade and outer saw blade also counter-rotate.
due to the employing of technique scheme, the present invention compared with prior art tool has the following advantages:
according to of the present invention pair of saw blade electric circular saw, gap between inside and outside saw blade is not to provide by originally establishing bulge loop with it at saw blade, but establish breach formation by establishing on protuberance and outer saw blade on pressing plate, and greatly simplify the processing technology of saw blade, the cost of saw blade and the cost of electric circular saw are declined.
Accompanying drawing explanation
below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described in detail.
fig. 1 is the main cross-sectional schematic according to of the present invention pair of saw blade electric circular saw;
fig. 2 is according to pressing plate of the present invention schematic diagram;
fig. 3 be Fig. 2 along A-A to cross-sectional schematic;
fig. 4 is according to outer saw blade of the present invention schematic diagram;
fig. 5 be Fig. 4 along B-B to cross-sectional schematic;
fig. 6 is the local enlarged diagram of interior saw blade and outer saw blade;
wherein: 1, motor; 10, line shaft; 2, the first gear; 3, the second gear; 4, the first power transmission shaft; 5, second driving shaft; 50, central shaft; 51, axle sleeve; 6, interior saw blade; 7, outer saw blade; 70, breach; 8, pressing plate; 80, protuberance; 9, bolt; S, gap.
The specific embodiment
as shown in Figures 1 to 6, according to two saw blade electric circular saws of the present embodiment comprise motor 1, the first gear 2 of being done to counter-rotate by line shaft 10 transmissions of motor 1 and the second gear 3, with affixed the first power transmission shaft 4 of the first gear 2, second driving shaft 5, interior saw blade 6, outer saw blade 7, pressing plate 8 and the bolt 9 affixed with the second gear 3.The first power transmission shaft 4 and second driving shaft 5 concentric settings, and the first power transmission shaft 4 is positioned at the periphery of second driving shaft 5.Second driving shaft 5 comprises central shaft 50 and axle sleeve 51.Interior saw blade 6 is arranged on the first power transmission shaft 4, and outer saw blade 7 is arranged on the axle sleeve 51 of second driving shaft 5, and pressing plate 8 is pressed on outer saw blade 7 outsides by bolt 9.In the time that electric circular saw turns round, the first gear 2 and the second gear 3 counter-rotate, thereby interior saw blade 6 and outer saw blade 7 also counter-rotate.
unlike the prior art, the pressing plate 8 of the present embodiment is formed with three protuberances 80 along the circumferential extension of pressing plate 8 in the one side towards outer saw blade 7, meanwhile, outer saw blade 7 offers breach 70 at the position of corresponding these three protuberances 80, each protuberance 80 is corresponding conflicts through breach 70 and with the plane of interior saw blade 6, and the position of interior saw blade 6 is fixed.The height of protuberance 80 is designed to be greater than the thickness of outer saw blade 7, so, the part of stretching out breach 70 of protuberance 80 makes between interior saw blade 6 and outer saw blade 7, to have formed a gap S, and the size of this gap S equals the difference of the height of protuberance 80 and the thickness of outer saw blade 7.The existence of this gap S has guaranteed that the friction between two saw blades is small size contact, has reduced fricative temperature.
relatively the present invention and prior art are known, gap between inside and outside saw blade of the present invention is not to provide by originally establishing bulge loop with it at saw blade, but on protuberance and outer saw blade, establish breach and form by establishing on pressing plate, so, the processing technology of saw blade is greatly simplified, thereby the cost of saw blade and the cost of electric circular saw are declined.
the object of above-described embodiment is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (7)
1. a two saw blade electric circular saw, comprise motor (1), driven the first gear (2) and second gear (3) of rotation by described motor (1), the first power transmission shaft (4) and the second driving shaft (5) that are fixedly connected with the second gear (3) with described the first gear (2) respectively and coaxially arrange, be arranged on respectively described the first power transmission shaft (4) and second driving shaft (5) are upper and center line overlaps interior saw blade (6) and outer saw blade (7), and be pressed on the pressing plate (8) in described outer saw blade (7) outside, between described interior saw blade (6) and outer saw blade (7), be formed with gap (S), it is characterized in that: described pressing plate (8) in the one side of described outer saw blade (7), be formed with protuberance (80), on described outer saw blade (7), offer breach (70), described protuberance (80) is conflicted with described interior saw blade (6) through described breach (70), wherein, the height of described protuberance (80) is greater than the thickness of described outer saw blade (7), thereby between interior saw blade (6) and outer saw blade (7), form size and equal the gap (S) of protuberance (80) height and the difference of the thickness of outer saw blade (7).
2. according to claim 1 pair of saw blade electric circular saw, is characterized in that: described protuberance (80) is along the circumferential extension of described pressing plate (8).
3. according to claim 1 and 2 pair of saw blade electric circular saw, is characterized in that: described protuberance (80) has multiple, and multiple described protuberance (80) being circumferentially uniformly distributed along described pressing plate (8).
4. according to claim 1 pair of saw blade electric circular saw, is characterized in that: described the first power transmission shaft (4) is positioned at the periphery of described second driving shaft (5).
5. according to claim 4 pair of saw blade electric circular saw, is characterized in that: described second driving shaft (5) comprises central shaft (50) and axle sleeve (51), and described outer saw blade (7) is arranged on the axle sleeve (51) of second driving shaft (5).
6. according to claim 1 pair of saw blade electric circular saw, is characterized in that: described pressing plate (8) is pressed on described outer saw blade (7) by bolt (9).
7. according to claim 1 pair of saw blade electric circular saw, is characterized in that: described the first gear (2) and the second gear (3) counter-rotate, and described interior saw blade (6) counter-rotates with described outer saw blade (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210533615.1A CN103862102B (en) | 2012-12-11 | 2012-12-11 | Double; two saw blade electrotrephines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210533615.1A CN103862102B (en) | 2012-12-11 | 2012-12-11 | Double; two saw blade electrotrephines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103862102A true CN103862102A (en) | 2014-06-18 |
| CN103862102B CN103862102B (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210533615.1A Active CN103862102B (en) | 2012-12-11 | 2012-12-11 | Double; two saw blade electrotrephines |
Country Status (1)
| Country | Link |
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| CN (1) | CN103862102B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999044778A1 (en) * | 1998-03-06 | 1999-09-10 | Powertools International Gmbh | Drive mechanism with rotational speed reduction for a cutting device with two counter rotating cutting blades |
| CN101116919A (en) * | 2007-05-08 | 2008-02-06 | 郭一文 | Sawblades in couple |
| CN201483082U (en) * | 2009-09-08 | 2010-05-26 | 黄亮 | Double-cutter anisotropic cutting machine |
| GB2466999A (en) * | 2009-01-19 | 2010-07-21 | Chung-Chi Chen | Saw with first and second blades |
| CN102211230A (en) * | 2010-04-06 | 2011-10-12 | 陈重光 | Saw bit capable of bidirectionally sawing |
| CN202271023U (en) * | 2011-09-16 | 2012-06-13 | 胡继宁 | Saw blade group circular saw machine and transmission case thereof |
| CN102513604A (en) * | 2011-11-30 | 2012-06-27 | 高金云 | Driving device of double-blade metal cutting machine |
| CN202377608U (en) * | 2011-11-10 | 2012-08-15 | 宁波德丰动力科技有限公司 | Concentric reversion dual-working-head power drive device and axial positioning structure thereof |
-
2012
- 2012-12-11 CN CN201210533615.1A patent/CN103862102B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999044778A1 (en) * | 1998-03-06 | 1999-09-10 | Powertools International Gmbh | Drive mechanism with rotational speed reduction for a cutting device with two counter rotating cutting blades |
| CN101116919A (en) * | 2007-05-08 | 2008-02-06 | 郭一文 | Sawblades in couple |
| GB2466999A (en) * | 2009-01-19 | 2010-07-21 | Chung-Chi Chen | Saw with first and second blades |
| CN201483082U (en) * | 2009-09-08 | 2010-05-26 | 黄亮 | Double-cutter anisotropic cutting machine |
| CN102211230A (en) * | 2010-04-06 | 2011-10-12 | 陈重光 | Saw bit capable of bidirectionally sawing |
| CN202271023U (en) * | 2011-09-16 | 2012-06-13 | 胡继宁 | Saw blade group circular saw machine and transmission case thereof |
| CN202377608U (en) * | 2011-11-10 | 2012-08-15 | 宁波德丰动力科技有限公司 | Concentric reversion dual-working-head power drive device and axial positioning structure thereof |
| CN102513604A (en) * | 2011-11-30 | 2012-06-27 | 高金云 | Driving device of double-blade metal cutting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103862102B (en) | 2016-06-22 |
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