CN102672267B - Sawing cutter - Google Patents
Sawing cutter Download PDFInfo
- Publication number
- CN102672267B CN102672267B CN201110061964.3A CN201110061964A CN102672267B CN 102672267 B CN102672267 B CN 102672267B CN 201110061964 A CN201110061964 A CN 201110061964A CN 102672267 B CN102672267 B CN 102672267B
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- Prior art keywords
- cutter
- center line
- sawing
- eccentric block
- bar
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Abstract
The invention relates to a sawing cutter, which comprises a shell, a motor, a switch, a transmission mechanism, a first rod, a second rod and a first cutter, wherein the motor is installed inside the shell; the switch is used for starting the motor; the transmission mechanism is driven by the motor; the transmission mechanism comprises a first eccentric block and a second eccentric block; the first eccentric block and the second eccentric block are provided with a rotary axis; the first rod is driven by the first eccentric block and carries out reciprocating motion; the second rod is driven by the second eccentric block and carries out reciprocating motion; the first cutter comprises a first blade installed on the first rod and a second blade installed on the second rod; and the distance from the plane of the gear top of the first cutter to the rotary axis is smaller than or equal to 20mm. According to the scheme, an operator can realize stable sawing with the sawing cutter provided by the invention, so that the sawing efficiency is improved greatly.
Description
Technical field
The present invention relates to a kind of sawing tool.
Background technology
There is the various cutter for sawing in the market, although this kind of cutter uses two saw blade to carry out sawing, ensure steady when sawing of utensil, but under some operating mode, especially, when in sawing, some are similar to this kind of workpiece of flexible branch, the stationarity of this utensil is still poor, thus causes operator when operation utensil, less stable, efficiency is lower.
Summary of the invention
The problem that the present invention solves is to provide a kind of sawing tool carrying out stable sawing.
For solving the problem, sawing tool provided by the invention comprises a casing, one is arranged on the motor in casing, the switch of a unlatching motor, one by motor-driven transmission mechanism, transmission mechanism comprises the first eccentric block and the second eccentric block, first eccentric block and the second eccentric block have a rotation, driven by the first eccentric block and the first bar moved reciprocatingly and being driven by the second eccentric block and the second bar moved reciprocatingly, first cutter, first cutter comprises the first blade be installed on the first bar and the second blade be installed on the second bar, transmission mechanism also comprises the first roller gear, second roller gear, bevel gear wheel and the bevel pinion engaged with bevel gear wheel, bevel gear wheel has the first end face and the second end face, first end face is provided with the tooth engaged with bevel pinion, first eccentric block and the second eccentric block are positioned at the homonymy of the second end face, described first roller gear to be arranged on motor and to transmit the rotary power of motor, described second roller gear engages with described first roller gear and transmits the rotary power transmitted via described first roller gear, the distance of the tooth top plan range rotation of the first cutter is less than or equal to 20mm, described first cutter can be replaced by the second cutter, described second cutter comprises the first saw blade be installed on the first bar and the second saw blade be installed on described second bar, described in the tooth top plan range of described second cutter, the distance of rotation is less than or equal to 20mm, described bevel gear wheel limits a central axis, described first blade and described second blade formation first bonded to each other binding face, described first saw blade and described second saw blade formation second bonded to each other binding face, the central axis of described bevel gear wheel and described first binding face or described second binding face mutually vertical, described casing front end is formed with the first grip portions, described casing rear end is formed with the second grip portions, described first grip portions is formed with the first center line, described second grip portions is formed with the second center line, described bevel pinion is installed on the gear shaft of described second roller gear, the gear shaft of described second roller gear limits a central axis, the central axis of the gear shaft of described second roller gear and described first centerline parallel, rotary power via described second roller gear transmission is delivered on described bevel gear wheel by described bevel pinion, described first bar is one and is driven and the first bar moved reciprocatingly by transmission mechanism, it is S that described first bar has a reciprocating stroke.
By such scheme, operator uses sawing tool of the present invention can realize stable sawing, substantially increases cutting-rate.
Accompanying drawing explanation
Fig. 1 is the stereogram of sawing tool of the present invention;
Fig. 2 is the cut-away view after sawing tool of the present invention removes casing;
Fig. 3 is the cut-away view after sawing tool of the present invention removes casing;
Fig. 4 is the sectional view of the first cutter that sawing tool of the present invention uses;
Fig. 5 is the front view of the first cutter that sawing tool of the present invention uses;
Fig. 6 is the enlarged drawing at B place in Fig. 4;
Fig. 7 is the enlarged drawing at D place in Fig. 4;
Fig. 8 is the sectional view of the second cutter that sawing tool of the present invention uses;
Fig. 9 is the front view of the second cutter that sawing tool of the present invention uses;
Figure 10 is the enlarged drawing at C place in Fig. 8;
Figure 11 is the enlarged drawing at A place in Fig. 9;
Figure 12 shows the stressed schematic diagram of the tooth top plane of sawing tool second cutter of the present invention and the rotation relation of eccentric block and reciprocating lever;
Figure 13 shows the stressed schematic diagram of the second cutter in Figure 12.
Detailed description of the invention
As Fig. 1, sawing tool of the present invention comprises casing 1, casing 1 is formed with front end first grip portions 2 and rear end second grip portions 3, first grip portions 2 has first center line, second grip portions 3 has second center line, first centerline parallel is in the second center line, first center line and the second center line are preferably same center line X, a power brick 5 is installed on rear end grip portions 3, power brick 5 has a 3rd center line Y, angle between 3rd center line Y and center line X, between 0 degree to 90 degree, is preferably the angle of 30 degree.
As shown in Figure 1,2 and 3, motor 6 is arranged in the second grip portions 3, a second bar 10b being installed to the first bar 10a in casing 1 and being installed in casing, in the present embodiment, transmission mechanism is used for the rotary motion of motor 6 to convert to the reverse reciprocating motion of the first bar 10a and the second bar 10b.In addition, the first bar 10a also can be fixedly installed in casing, and only has the second bar 10b to move reciprocatingly, and also can realize object of the present invention.Transmission mechanism comprises a pair roller gear 7a and 7b, a pair conical gear 8a and 8b and to be arranged on for a pair on gear shaft 9 that center line is O and phase place is the first eccentric block 9a and the second eccentric block 9b of 180 degree, the rotation of the first eccentric block 9a and the second eccentric block 9b is the center line O. first eccentric block 9a of gear shaft 9 and the second eccentric block 9b and is arranged in the waist-shaped hole of the first bar 10a and the second bar 10b respectively, supported by a guide pad 11 in the middle of first bar 10a and the second bar 10b, the other end of the first bar 10a and the second bar 10b is separately installed with chuck 12a and 12b, chuck 12a and 12b is used for clamping first cutter 100 or the second cutter 200. switches 4 and is arranged on casing 1 for starter motor 6. when operator's console switch 4, starter motor 6, motor 6 drive installation rotates to the roller gear 7a on motor output shaft, roller gear 7a drives the roller gear 7b engaged with it to rotate, the other end of the gear shaft of roller gear 7b is provided with conical gear 8a, the gear shaft 9 of conical gear 8b is arranged on casing 1, conical gear 8a drives conical gear 8b to rotate, a pair phase place on the gear shaft 9 of conical gear 8b is the eccentric block 9a of 180 degree, 9b drives the first bar 10a and the second bar 10b to do reverse reciprocating motion respectively, first cutter or the second Cutting tool installation manner are to being on heterodromous first bar 10a and the second bar 10b, thus the reciprocating motion realizing the first cutter or the second cutter realizes sawing function.Transmission mechanism of the present invention also can be realized by other modes in addition, as long as the rotary motion of motor can be converted to the reciprocating motion of cutter.
As Fig. 4,5, shown in 6 and 7, show the first cutter 100. first cutter 100 of the present invention and be mainly used in cutting not hard material, as the material such as heat-preservation cotton and silk flosssilk wadding.First cutter 100 comprises the first blade 100a and the second blade 100b, rivet 14 passes through circular hole, lining 15 and pad 16 on the second blade 100b, rivetted by the other end of rivet 14, first blade 100a and the second blade 100b is fitted, lining 15 slides in the waist-shaped hole of the first blade 100a, realizes moving back and forth between two blades.To those skilled in the art, two blades also have other connected mode to realize and move back and forth toward each other.First blade 100a is installed on chuck 12a, and the second blade 100b is installed on chuck 12b.First blade 100a and the second blade 100b preferably has identical profile of tooth, rack saw and tooth depth.In order to realize efficient shearing, the tooth depth of cutter tooth is greater than 5mm usually, as comprised a series of cutter tooth respectively for 8mm. first blade 100a and the second blade 100b in the present invention, a series of cutter tooth has the first tooth pitch P1, and tooth pitch is the distance of a certain adjacent gear tip clearance on blade herein.The region formed between the adjacent sword of two blades two is cutting zone, in figure, A, B dot spacing of two blades is from being exactly cutting zone, in the front view of two blades, this cutting zone forms certain opening, fill in for fiber soft material, and this opening must greatly and deeply, the usual degree of depth and tooth depth be greater than 5mm, herein tooth depth be at the bottom of the tooth top of a certain tooth on blade and tooth between distance, guarantee fibrous material fills in cutting zone.Because the materials such as heat-preservation cotton are very soft, only need to be cut off, do not need to cut down unnecessary crumb, so blade adopts the mode of cutting more applicable, the cutting edge of two blades is towards two blade binding face Z1-Z1, namely blade cutting edge angle angle is not more than 90 °, and the shape of cutter tooth is as far as possible symmetrical, and namely two swords of a tooth are preferably equilateral, when can avoid two blade cuts like this, the oriented lopsided trend of soft material, is convenient to cutting more.
As shown in Figs. 8 to 11, show the second cutter 200. second cutter 200 of the present invention and be mainly used in cutting harder material, as the material such as wood, plasterboard.Second cutter 200 comprises the first saw blade 200a and the second saw blade 200b, and the first saw blade 200a is fit together with the second saw blade 200b by the connected mode identical with the second blade 100b with the first blade 100a and can be done relatively reciprocating motion each other.First saw blade 200a is installed on chuck 12a, and the second saw blade 200b is installed on chuck 12b.First saw blade 200a and the second saw blade 200b preferably has identical profile of tooth, rack saw and tooth depth, and saw blade 200a and 200b is oppositely installed together, namely contrary from the sawtooth inclination angle of saw blade 200a and 200b after installation viewed from saw blade front, as Fig. 9.First saw blade 200a and the second saw blade 200b comprises a series of sawtooth respectively, and a series of sawtooth has the second tooth pitch P2, and tooth pitch is the distance of a certain adjacent gear tip clearance on saw blade herein.In order to realize High Efficient Sawing, the tooth depth of sawtooth is not more than 5mm usually, and tooth depth of the present invention is 3mm.As Figure 11, saw blade edge direction is not limited to side, and namely cutting edge has outwardly, also has inwardly, saw blade flute profile is asymmetric, two saw blades after installation, and the angle of inclination of its sword is contrary, makes the sawing simultaneously of two saw blades like this, chip removal simultaneously, the power be namely applied on two saw blades is the same, is conducive to the balance of machine.In addition the tooth of saw blade has outwards point tooth, and the seam cut out like this is wider than two saw blade thickness, can not binding.In order to ensure that cutting edge is sharp, in Figure 10, angle1 and angle2 is the angle on arbitrary saw blade between teeth portion same side and Z2-Z2, and angle angle1 is preferably not less than 90 degree, and angle2 is not more than 90.In order to improve cutting efficiency, angle1 and angle2 preferably interval one by one.When operator cuts soft material, operator by the first Cutting tool installation manner on chuck; When operator needs to cut hard material, operator only need replace with the second cutter, thus can realize carrying out sawing for different operating mode.
In addition, in order to ensure the stability that cutting tools works under some specific operation, the position relationship of the present invention to the tooth top of the first cutter and the tooth top of the second cutter and the rotation of eccentric block designs.As Figure 12, shown in 13, when cutting tools uses the second cutter to carry out sawing, first eccentric block 9a and the second eccentric block 9b is rotated counterclockwise around the center line O of rotation and gear shaft 9, first saw blade 200a moves backward, second saw blade 200b travels forward, workpiece is applied to power F1 on the first saw blade 200a forward, be applied to power F2 on the second saw blade 200b backward, because the first saw blade 200a is fixedly connected with the second bar 10b with the second saw blade 200b respectively with the first bar 10a, first eccentric block 9a and the second eccentric block 9b drives the first bar 10a and the second bar 10b respectively, so the first bar 10a is subject to power F10 at the first eccentric block 9a and the first bar 10a points of tangency P place, F1 and F10 equal and opposite in direction, same, the power F20 that the second bar 10b is subject at Q point and F2 equal and opposite in direction.F10 apart from the distance of tooth top plane Z of the second cutter be L1, F20 apart from the distance of the tooth top plane Z of the second cutter be moment and the M10+M20=F10 × L1+F20 × L2 that L2, F10 and the F20 tooth top plane Z to the second cutter produces.Because two blade symmetry are arranged, so general F1 and F2 equal and opposite in direction is F, again F1 and F2 respectively with F10 and F20 equal and opposite in direction, i.e. M10+M20=F × (L2+L1). as seen from Figure 12, L is exactly the distance of the tooth top plane Z of rotation distance second cutter of the first eccentric block and the second eccentric block, L12 is the rotation distance P point of the first eccentric block and the second eccentric block and the vertical range of Q point, i.e. L12=(L2-L1)/2, then M10+M20=F × (L2+L1)=F × ((L+L12)+(L-L12))/2=F × L, (M10+M20) existence can cause whole utensil unstable in the course of the work, namely the value of (M10+M20) is the smaller the better, for specific cutting object, power F is definite value, L is less, utensil is more stable in the course of the work.Namely the distance reducing the tooth top plane Z of rotation O distance second cutter of the first eccentric block 9a and the second eccentric block 9b can reduce the vibration of utensil greatly, preferably this value is advisable to be not more than 20mm, preferably, the rotation O of the first eccentric block 9a and the second eccentric block 9b and the tooth top plane Z of the second cutter is coplanar.Equally, when utensil uses the first cutter, the distance of the tooth top plane of rotation O distance first cutter of the first eccentric block 9a and the second eccentric block 9b is not more than 20mm, preferably, and the rotation O of the first eccentric block 9a and the second eccentric block 9b and the tooth top co-planar of the first cutter.
As shown in Figure 1, the structure of handle before and after this appliance design becomes, when user is when carrying out shearing manipulation, because workpiece is softer, shearing force is less, and utensil relatively balances, and operator can use rear grip portions 3 to operate; When user is when carrying out sawing operation, because workpiece is harder, sawing force is larger, add when flexible workpiece such as sawing branches, utensil balance is relatively poor, and operator can grip front grip portions 2 and operate, and can ensure utensil smooth working as far as possible relatively like this, also can operate by hands grasping in addition, thus realize reliable and stable sawing.On the other hand, by switch 4 being arranged between front grip portions 2 and rear grip portions 3, and ensure that operator again can by the same hand console switch 4 while grip portions 2 before being hold by one hand, equally also can by the same hand console switch 4 during grip portions 3 after being hold by one hand.Such operator's one-hand operation utensil, increases work efficiency greatly.In addition, because sawing tool of the present invention is when use second cutter carries out sawing, because workpiece is harder, required sawing force is also larger, in order to ensure that sawing tool of the present invention can realize the function of sawing and shearing efficiently, the nominal voltage at least 3.6 volts of power brick 5 of the present invention, is preferably 10.8 volts.Power brick 5 preferably uses lithium battery bag, nickel-cadmium cell bag or super capacitor.
Be only wherein several detailed description of the invention of the present invention shown in description above and accompanying drawing, the scope of protection of present invention is based on claims.By to describing above and the understanding of accompanying drawing, those of ordinary skill in the art is by same mode, or with through simple form of replacing, partial component is carried out simple replacement and is regarded as in the scope of protection of the invention by non-creativeness ground.
Claims (16)
1. a cutting tools, comprise a casing, one is arranged on the motor in casing, the switch of a unlatching motor, one by motor-driven transmission mechanism, described transmission mechanism comprises the first eccentric block and the second eccentric block, described first eccentric block and described second eccentric block have a rotation, driven by described first eccentric block and the first bar moved reciprocatingly and being driven and the second bar moved reciprocatingly by described second eccentric block, first cutter, described first cutter comprises the first blade be installed on the first bar and the second blade be installed on described second bar, it is characterized in that, described transmission mechanism also comprises the first roller gear, second roller gear, bevel gear wheel and the bevel pinion engaged with described bevel gear wheel, described bevel gear wheel has the first end face and the second end face, described first end face is provided with the tooth engaged with described bevel pinion, described first eccentric block and described second eccentric block are positioned at the homonymy of described second end face, described first roller gear to be arranged on motor and to transmit the rotary power of motor, described second roller gear engages with described first roller gear and transmits the rotary power transmitted via described first roller gear, described in the tooth top plan range of described first cutter, the distance of rotation is less than or equal to 20mm, described first cutter can be replaced by the second cutter, described second cutter comprises the first saw blade be installed on the first bar and the second saw blade be installed on described second bar, described in the tooth top plan range of described second cutter, the distance of rotation is less than or equal to 20mm, described bevel gear wheel limits a central axis, described first blade and described second blade formation first bonded to each other binding face, described first saw blade and described second saw blade formation second bonded to each other binding face, the central axis of described bevel gear wheel and described first binding face or described second binding face mutually vertical, described casing front end is formed with the first grip portions, described casing rear end is formed with the second grip portions, described first grip portions is formed with the first center line, described second grip portions is formed with the second center line, described bevel pinion is installed on the gear shaft of described second roller gear, the gear shaft of described second roller gear limits a central axis, the central axis of the gear shaft of described second roller gear and described first centerline parallel, rotary power via described second roller gear transmission is delivered on described bevel gear wheel by described bevel pinion, described first bar is one and is driven and the first bar moved reciprocatingly by transmission mechanism, it is S that described first bar has a reciprocating stroke.
2. sawing tool as claimed in claim 1, it is characterized in that, tooth top plane and the described rotation of described second cutter are coplanar.
3. sawing tool as claimed in claim 1, it is characterized in that, tooth top plane and the described rotation of described first cutter are coplanar.
4. sawing tool as claimed in claim 1, it is characterized in that, described first grip portions is formed with the first center line, and described second grip portions is formed with the second center line, and described first centerline parallel is in described second center line.
5. sawing tool as claimed in claim 4, it is characterized in that, described first center line overlaps with described second center line.
6. sawing tool as claimed in claim 1, it is characterized in that, described switch is between described first grip portions and described second grip portions.
7. sawing tool as claimed in claim 1, it is characterized in that, described motor is positioned at described second grip portions.
8. sawing tool as claimed in claim 1, it is characterized in that, described sawing tool also comprises the power brick of a drive motors, and described power brick is connected to described second grip portions.
9. sawing tool as claimed in claim 8, is characterized in that, described power brick forms the 3rd center line, and described 3rd center line and the described first or second center line are at an angle.
10. sawing tool as claimed in claim 9, it is characterized in that, described angle is between 0 degree to 90 degree.
11. sawing tools as claimed in claim 10, is characterized in that, the angle ranging from 30 degree.
12. sawing tools as claimed in claim 1, be characterised in that, described casing be also provided with the power brick of a drive motors, the nominal voltage of described power brick is at least 3.6 volts.
13. as the sawing tool of claim 12, and the nominal voltage of described power brick is 10.8 volts.
14. sawing tools as claimed in claim 13, it is characterized in that, described power brick is connected to described second grip portions and is formed with the 3rd center line, described 3rd center line and the described first or second center line are at an angle.
15. sawing tools as claimed in claim 14, it is characterized in that, described angle is between 0 degree to 90 degree.
16. sawing tools as claimed in claim 15, is characterized in that, the angle ranging from 30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110061964.3A CN102672267B (en) | 2011-03-11 | 2011-03-11 | Sawing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110061964.3A CN102672267B (en) | 2011-03-11 | 2011-03-11 | Sawing cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102672267A CN102672267A (en) | 2012-09-19 |
| CN102672267B true CN102672267B (en) | 2015-07-15 |
Family
ID=46805184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110061964.3A Expired - Fee Related CN102672267B (en) | 2011-03-11 | 2011-03-11 | Sawing cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102672267B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2840125A (en) * | 1955-05-10 | 1958-06-24 | Waller | Portable power saw having oppositely reciprocating blades |
| CN1143448A (en) * | 1995-06-28 | 1997-02-26 | 罗伯特-博希股份公司 | Hedge shears |
| CN1356193A (en) * | 2000-11-02 | 2002-07-03 | 密尔沃基电力工具公司 | Handle set for reciprocating saw |
| CN202114343U (en) * | 2011-03-11 | 2012-01-18 | 南京德朔实业有限公司 | Sawing cutter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU707795A1 (en) * | 1978-01-13 | 1980-01-08 | Всесоюзный научно-исследовательский институт горноспасательного дела | Wood-cutting apparatus |
| US4819334A (en) * | 1983-05-06 | 1989-04-11 | Minnesota Mining And Manufacturing Company | Orbital saw device |
| CN2046784U (en) * | 1989-03-01 | 1989-11-01 | *** | Electric hand saw |
| JP4029579B2 (en) * | 2001-03-28 | 2008-01-09 | 日立工機株式会社 | Saver saw |
| US7757405B2 (en) * | 2006-09-19 | 2010-07-20 | Echo, Incorporated | Trimmer with reciprocating blades |
| DE102008062603A1 (en) * | 2008-12-17 | 2010-10-21 | Andreas Stihl Ag & Co. Kg | implement |
-
2011
- 2011-03-11 CN CN201110061964.3A patent/CN102672267B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2840125A (en) * | 1955-05-10 | 1958-06-24 | Waller | Portable power saw having oppositely reciprocating blades |
| CN1143448A (en) * | 1995-06-28 | 1997-02-26 | 罗伯特-博希股份公司 | Hedge shears |
| CN1356193A (en) * | 2000-11-02 | 2002-07-03 | 密尔沃基电力工具公司 | Handle set for reciprocating saw |
| CN202114343U (en) * | 2011-03-11 | 2012-01-18 | 南京德朔实业有限公司 | Sawing cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102672267A (en) | 2012-09-19 |
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