CN102430808B - Micro-vibration hand saw - Google Patents
Micro-vibration hand saw Download PDFInfo
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- CN102430808B CN102430808B CN201110408143.2A CN201110408143A CN102430808B CN 102430808 B CN102430808 B CN 102430808B CN 201110408143 A CN201110408143 A CN 201110408143A CN 102430808 B CN102430808 B CN 102430808B
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- lever
- take
- eccentric wheel
- weight
- linear meter
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Abstract
The present invention relates to micro-vibration hand saw with Vibration Absorption Designing, the transmission mechanism of this panel saw comprises and engaging each other for a pair and the bevel gear of central axis, one of them bevel gear is connected with the take-off lever of actuating unit, order is fixedly connected with two eccentric wheels on the turning cylinder of another bevel gear, and two eccentric wheels are symmetrical set about turning cylinder; Wherein the first eccentric wheel coordinates with take-off lever transmission, and the second eccentric wheel coordinates with weight linear meter transmission, and the shape of weight linear meter is roughly the same with take-off lever, and the weight of weight linear meter is more than or equal to the weight of take-off lever; Two eccentric wheels rotation phase is on the rotating shaft symmetrical, load is in a basic balance, and the vibration that eccentric wheel produces is cancelled out each other, externally not transmitting vibrations, so such panel saw substantially achieve friction or for vibration, be convenient to user more laborsaving, grip more easily; And also avoid saw blade to vibrate and reduce the precision of cutting processing.
Description
Technical field
The invention belongs to machinery or specific purpose tool field, be specifically related to panel saw, especially there is the panel saw of Vibration Absorption Designing.
Background technology
In prior art, panel saw generally includes and engages each other for a pair and the bevel gear of central axis, one of them bevel gear is fixedly connected with the rotor of motor, the turning cylinder of another bevel gear is fixedly connected with the cam of an eccentric setting, this cam coordinates with reciprocating lever transmission, reciprocating lever and saw blade affixed or be articulated and connected, thus drive saw blade linear reciprocating motion.As technical scheme disclosed in Chinese patent ZL200520052162.6, the panel saw of this traditional structure is because utilize bevel gear transmission, when running up, noise is larger, vibration, serious wear, be not easy to user grip and use, and user is in order to hold panel saw, ensures that cutting is smooth and greatly consuming muscle power.
In order to head it off, reduced the vibration of machine by counterweight method in prior art, namely balancing weight is set on eccentric wheel, make the turning cylinder be connected with bevel gear be in symmetrical state when rotating, but turning cylinder and eccentric wheel only can be made so to be originally in symmetrical balance in rotary state.But during work, after adding the load of saw blade, the rotation on turning cylinder and eccentric wheel remains asymmetric, so vibration is very large; Or only when balancing weight is in the direction of motion of reciprocating lever, just can be in poised state, lower vibration, whenever other are all nonequilibrium conditions, and therefore the vibration of machine is violent.Make operator grip effort like this, can not work long hours, use inconvenience; The precision of simultaneously processing is very low.
And the technical scheme increasing balancing weight like this on eccentric wheel or turning cylinder is also because add the load that actuating unit starts, and easily causes motor to be difficult to start, or overload burning.Or in the technical scheme of fuel power mechanism, when easily causing startup, load is excessive, fuel oil motor cannot start or burn insufficient and in cylinder carbon deposit.
Summary of the invention
The object of this invention is to provide the significantly reduced micro-vibration hand saw of a kind of vibration.
For achieving the above object, present invention employs following technical scheme: a kind of micro-vibration hand saw, comprise actuating unit and saw blade, be connected with transmission mechanism between actuating unit with saw blade, it is characterized in that: described transmission mechanism comprises and engaging each other for a pair and the bevel gear of central axis, one of them bevel gear is connected with the take-off lever of actuating unit, order is fixedly connected with two eccentric wheels on the turning cylinder of another bevel gear, and two eccentric wheels are symmetrical set about turning cylinder; Wherein the first eccentric wheel coordinates with take-off lever transmission, and eccentric rotary motion is converted to the straight reciprocating motion of the body of rod and passes to saw blade by take-off lever; Second eccentric wheel coordinates with weight linear meter transmission, and the shape of weight linear meter is roughly the same with take-off lever, and the weight of weight linear meter is more than or equal to the weight of take-off lever.
Beneficial effect of the present invention is: in said structure, the take-off lever of the actuating unit that such as electronic or fuel oil motor or hydraulic motor or gas motor or similar means are formed rotates, a bevel gear is driven to rotate, the bevel gear be engaged with also corresponding rotation drive two eccentric wheels to rotate, the first eccentric wheel just drives take-off lever to move back and forth to drive saw blade reciprocating motion to carry out cutting work.Two eccentric wheels be in fact exactly the connection with bevel gear turning cylinder axially be projected as symmetrical structure, while a driver output bar, another eccentric wheel drives that weight linear meter is same with take-off lever does reciprocal operation, again due to weight linear meter and take-off lever weight quite or weight linear meter bigger, so such two eccentric wheels rotation phase is on the rotating shaft symmetrical, load is in a basic balance, the vibration that eccentric wheel produces is cancelled out each other, external not transmitting vibrations, so such panel saw substantially achieve friction or for vibration, be convenient to user more laborsaving, grip more easily, and also avoid saw blade to vibrate and reduce the precision of cutting processing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the sectional structure schematic diagram of confined state of the present invention.
Detailed description of the invention
The micro-vibration hand saw of one as shown in Figure 1, 2, comprise actuating unit and saw blade 1, actuating unit is motor 17, be connected with transmission mechanism between motor 17 with saw blade 1, core of the present invention is improved and is just to improve drive mechanism, be exactly specifically that transmission mechanism comprises: the output shaft of motor 17 is in transmission connection with small umbrella gear 12 by the adapter sleeve 15 of connecting rod 14 and connecting rod 14 end, bearing 13, and large umbrella gear 9 engages with small umbrella gear 12, and center line is mutually vertical.The structure that such small umbrella gear 12 is connected with the output shaft of motor 17 in fact also serves the effect of deceleration.On the turning cylinder 20 of large umbrella gear 9, order is fixedly connected with the second eccentric wheel 16 and the first eccentric wheel 19, first eccentric wheel 19 and the second eccentric wheel 16 are symmetrical set about turning cylinder 20, namely the second eccentric wheel 16 and the first eccentric wheel 19 order on turning cylinder 20 is arranged, symmetrical about turning cylinder 20 axle core in turning cylinder 20 projection axially.Preferably: the second described eccentric wheel 16 and the first eccentric wheel 19 overall processing shaping.Can assembling process be simplified, avoid again the first eccentric wheel 19 and the wearing and tearing of the second eccentric wheel 16 loosen after phase place generation deviation when rotating.
Wherein, the first eccentric wheel 19 coordinates with take-off lever 18 transmission, and the rotary motion of the first eccentric wheel 19 is converted to the straight reciprocating motion of the body of rod and passes to saw blade 1 by take-off lever 18; Such transmission connecting structure has a variety of, and such as take-off lever 18 is exactly one and is hinged on the outer peripheral rod member of the first eccentric wheel 19, or also can be that other realizes the reciprocating structure of take-off lever 18; Take-off lever 18 other end and saw blade 1 hinged, or take-off lever 18 is as shown in Figure 2 affixed with split pin 30 and saw blade chuck.Second eccentric wheel 16 coordinates with weight linear meter 10 transmission, and the shape of weight linear meter 10 is roughly the same with take-off lever 18, and the weight of weight linear meter 10 is more than or equal to the weight of take-off lever 18.
So eccentric wheel 16 naturally can and weight linear meter 10 be formed and eccentric wheel 19 and the similar reciprocating motion of take-off lever 18, but two move back and forth and just in time symmetrically relative to the angular phase of turning cylinder 20 differ 180 ° in other words conj.or perhaps.Again due to weight linear meter 10 and take-off lever 18 weight quite or bigger, so such first eccentric wheel 19 and the rotation phase of the second eccentric wheel 16 on turning cylinder 20, load are all in the state of almost symmetry balance, the vibration that first eccentric wheel 19 and the second eccentric wheel 16 produce is cancelled out each other, externally not transmitting vibrations, so such panel saw achieves friction substantially or be vibration.And because weight linear meter 10 itself is separated with the second eccentric wheel 16, so can not increase the startup load of actuating unit.
Then similarly to the prior art, in order to ensure that the reciprocating motion of take-off lever 18 and weight linear meter 10 can smooth and easyly to be carried out, two ends all arrange bearing.Take-off lever 18 is connected with chuck 5, and saw blade 1 installs on chuck 5, and install latter two spring 4 ejection latch 3 of latch 3 and lock saw blade 1, spring 4 is fixed by chuck sliding sleeve 2, prevents dropping of spring 4.Then whole transmission mechanism is fixed in the chamber of left and right roller box 11,23 formation by bearing 8 and bearing 21, support 6 and support pressing plate 22.Certainly these fixed structures, syndeton are because there is a variety of embodiment, neither improvement place of the present invention, only illustrate instead of restriction to the present invention's design.
In first eccentric wheel 19 of technique scheme and the structure of the second eccentric wheel 16, second eccentric wheel 16 is inherently equivalent to a counterweight, weight linear meter 10 is the equal of again counterweight, the present invention also can regard as utilize two cover eccentric wheels drive reciprocating lever motion cancel out each other vibration structure.Comparatively prior art serves significant damping effect.In order to improve effectiveness in vibration suppression further, the weight of preferably described weight linear meter 10 is 1 ~ 2 times of take-off lever 18 weight.Namely the weight of weight linear meter 10 is bigger compared with take-off lever 18, this is because take-off lever 18 does work because of drive chuck 5 and saw blade 1, load is comparatively large, so the comparatively take-off lever 18 weight of weight linear meter 10 arranged is large, can balance the vibration of the first eccentric wheel 19 and the generation of the second eccentric wheel 16 further.But weight linear meter 10 can not be arranged excessive and increase gross weight of equipment, so the invention provides above-mentioned preferred weight parameter.
Further, described take-off lever 18 and weight linear meter 10 are
shape, the first eccentric wheel 19 and the second eccentric wheel 16 are positioned at middle annular section, and take-off lever 18 end is connected with saw blade 1 chuck 5.Namely as shown in Figure 1, during confined state, eccentric wheel 19 is positioned at the mid portion of take-off lever 18, and the annular section inward flange in the middle of eccentric wheel 19 edge and take-off lever 18 slidingly contacts formation transmission.In like manner, the annular section inward flange of eccentric wheel 16 edge and weight linear meter 10 centre slidingly contacts formation transmission.Such take-off lever 18 and weight linear meter 10 structure simply, are convenient to processing; And mid portion is the smooth structure of oval ring, be convenient to the first eccentric wheel 19 and the second eccentric wheel 16 rotates smooth and easy, reduce wear.
Described weight linear meter 10 and take-off lever 18 two ends are positioned at oiliness bearing 7,7`.Oiliness bearing 7,7` as shown in Figure 1, are exactly specifically: described oiliness bearing 7,7` are box-shaped, it are arranged the cavity that two sizes are corresponding with take-off lever 18 and weight linear meter 10 end, and cavity inner wall has the structure of supply lubricating oil or lubricating grease.Oiliness bearing 7,7` are also just similar to the shape of hollow brick, such one be two moving components share bearing be convenient to install and reduce equipment volume, oiliness bearing 7,7` i.e. bearing be provided with lubricant grease oil-bearing structure with the contact site of moving component simultaneously or be communicated with the structure of lubricating oil main, ensure that relative sliding surface has lubricating oil or lubricating grease to play lubrication all the time, subtract further and reduce component wear.
Claims (3)
1. a micro-vibration hand saw, comprise actuating unit and saw blade (1), be connected with transmission mechanism between actuating unit with saw blade (1), described transmission mechanism comprises and engaging each other for a pair and the bevel gear (12 of central axis, 9), one of them bevel gear (12) is connected with the take-off lever of actuating unit, the upper order of turning cylinder (20) of another bevel gear (9) is fixedly connected with the second eccentric wheel (16) and the first eccentric wheel (19), wherein the first eccentric wheel (19) coordinates with take-off lever (18) transmission, the rotary motion of the first eccentric wheel (19) is converted to the straight reciprocating motion of the body of rod and passes to saw blade (1) by take-off lever (18), second eccentric wheel (16) coordinates with weight linear meter (10) transmission, it is characterized in that: the first eccentric wheel (19) and the second eccentric wheel (16) are symmetrical set about turning cylinder (20), the shape of weight linear meter (10) is roughly the same with take-off lever (18), the weight of weight linear meter (10) is more than or equal to the weight of take-off lever (18), described weight linear meter (10) and take-off lever (18) two ends are positioned at oiliness bearing (7, 7`), the weight of described weight linear meter (10) is 1 ~ 2 times of take-off lever (18) weight, described oiliness bearing (7, 7`) in box-shaped, it is arranged the cavity that two sizes are corresponding with take-off lever (18) and weight linear meter (10) end, cavity inner wall has the structure of supply lubricating oil or lubricating grease.
2. micro-vibration hand saw according to claim 1, is characterized in that: described take-off lever (18) and weight linear meter (10) are
shape, the first eccentric wheel (19) and the second eccentric wheel (16) are positioned at middle annular section, and take-off lever (18) end is connected with saw blade (1) chuck.
3. micro-vibration hand saw according to claim 1 and 2, is characterized in that: described the first eccentric wheel (19) and the second eccentric wheel (16) overall processing shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408143.2A CN102430808B (en) | 2011-12-09 | 2011-12-09 | Micro-vibration hand saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408143.2A CN102430808B (en) | 2011-12-09 | 2011-12-09 | Micro-vibration hand saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102430808A CN102430808A (en) | 2012-05-02 |
| CN102430808B true CN102430808B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110408143.2A Expired - Fee Related CN102430808B (en) | 2011-12-09 | 2011-12-09 | Micro-vibration hand saw |
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| Country | Link |
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| CN (1) | CN102430808B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108912B (en) * | 2017-06-26 | 2021-12-03 | 博世电动工具（中国）有限公司 | Electric tool |
| CN110064957A (en) * | 2019-05-30 | 2019-07-30 | 陈永清 | A kind of high-speed cutting tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181693A (en) * | 1985-09-27 | 1987-04-29 | Black & Decker Inc | Improvements in and relating to power tools |
| CN1496772A (en) * | 2002-10-07 | 2004-05-19 | ������-�¿˶���˾ | Reciprocating-type saw |
| CN1579692A (en) * | 2003-08-01 | 2005-02-16 | 株式会社牧田 | Reciprocating power tool |
| CN101602124A (en) * | 2008-06-15 | 2009-12-16 | 苏州宝时得电动工具有限公司 | Reciprocating power tool |
| CN202377610U (en) * | 2011-12-09 | 2012-08-15 | 宁波捷美进出口有限公司 | Micro-vibration panel saw |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2671742Y (en) * | 2004-01-12 | 2005-01-19 | 苏州宝时得电动工具有限公司 | Bias reciprocating mechanism of electric knife and saw |
-
2011
- 2011-12-09 CN CN201110408143.2A patent/CN102430808B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181693A (en) * | 1985-09-27 | 1987-04-29 | Black & Decker Inc | Improvements in and relating to power tools |
| CN1496772A (en) * | 2002-10-07 | 2004-05-19 | ������-�¿˶���˾ | Reciprocating-type saw |
| CN1579692A (en) * | 2003-08-01 | 2005-02-16 | 株式会社牧田 | Reciprocating power tool |
| CN101602124A (en) * | 2008-06-15 | 2009-12-16 | 苏州宝时得电动工具有限公司 | Reciprocating power tool |
| CN202377610U (en) * | 2011-12-09 | 2012-08-15 | 宁波捷美进出口有限公司 | Micro-vibration panel saw |
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| Publication number | Publication date |
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| CN102430808A (en) | 2012-05-02 |
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