CN102672268B - Saw cutting cutter - Google Patents
Saw cutting cutter Download PDFInfo
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- CN102672268B CN102672268B CN201110061962.4A CN201110061962A CN102672268B CN 102672268 B CN102672268 B CN 102672268B CN 201110061962 A CN201110061962 A CN 201110061962A CN 102672268 B CN102672268 B CN 102672268B
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- center line
- cutter
- grip portions
- sawing
- motor
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Abstract
The invention provides a saw cutting cutter, which comprises a shell, a motor arranged in the shell, a switch for starting the motor, a transmission mechanism driven by the motor, a first rod, a second rod and a first cutter, wherein 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 spin axis, the first rod is driven by the first eccentric block to do reciprocating motion, and the second rod is driven by the second eccentric block to do reciprocating motion; the first cutter comprises a first blade arranged on the first rod and a second blade arranged on the second rod; and a distance between a blade binding face of the first cutter and a central line of the motor is less than or equal to 10mm. Through the technical scheme, when the saw cutting cutter is used by an operator, stable saw cutting can be realized, and the saw cutting efficiency is greatly improved.
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 in some cases, still there is certain instability in two saw blade sawing, cause the stationarity of utensil still poor, thus operator is when operation utensil, fluctuation of service, 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, the bevel pinion that transmission mechanism also comprises bevel gear wheel and engages 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, the distance of the blade binding face distance motor center line of the first cutter is less than or equal to 10mm.
By such scheme, operator uses sawing tool of the present invention can realize stable sawing, greatly improves 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 blade binding face of the first cutter of sawing tool of the present invention and the position relationship of motor center line and blade.
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 more than or equal to 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 illustrated in figs. 8-11, show the second cutter 200. second cutter 200 of the present invention to 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 saw blade binding face Z2-Z2, and angle angle1 is preferably not less than 90 °, and angle2 is not more than 90 degree.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.
As shown in figure 12, in practical situations both, first blade 100a of the first cutter 100 and the second blade 100b is when cutting soft material, the frictional force be subject to because of the first bar 10a of driving the 100b of the first blade 100a and the second blade reciprocal and the second bar 10b is not etc., and synchronization, the number of teeth that first blade 100a and the second blade 100b participate in cutting not etc. factor, cause and be not applied to directed force F 1 on the first blade 100a and the second blade 100b and F2 not etc., there is the binding face P of a △ F. first blade 100a and the second blade 100b and the distance of motor center line Q is L, then out-of-balance force △ F is to the moment M=△ F × L at motor 6 center.The existence of M can make the first blade 100a and the second blade 100b in cutting process, be subject to a moment of torsion around motor 6 center, thus the first blade 100a and the second blade 100b constantly swings, and causes cutting efficiency to decline.Because the restriction △ F of structure can not reduce, reduce out-of-balance force △ F to the moment M at motor 6 center by reducing L, when L is not more than 10mm, utensil can more steadily cut.Preferably, the binding face P of the first blade 100a and the second blade 100b and motor center line Q is coplanar.In addition, the center line Q of motor 6 and the centerline parallel of the second grip portions 3, preferably overlap and be same center line X, the center line of the second grip portions 3 and the centerline parallel of the first grip portions 2, preferably overlap, thus the center line of the binding face P of the first blade 100a and the second blade 100b and motor center line Q, the first grip portions 2 and the center line of the second grip portions 3 coplanar, such structure, when utensil cuts, utensil is more steadily, cutting efficiency is higher.Equally, when utensil uses the second cutter, because sawing is to liking branch, be more prone to rock, the swing of the first saw blade 200a and the second saw blade 200b and branch rock admixed together after, whole sawing process can be more not steady, cause cutting efficiency sharply to decline, even cannot work.When the binding face of the first saw blade 200a and the second saw blade 200b and the distance of motor center line are not more than 10mm, utensil can realize more steadily sawing.Preferably, the binding face of the first saw blade 200a and the second saw blade 200b and motor center line coplanar.In addition, the center line of motor center line, the first grip portions 2 and the centerline parallel of the second grip portions 3, preferably overlap.The center line of the binding face of the first saw blade 200a and the second saw blade 200b and motor center line, the first grip portions 2 and the center line of the second grip portions 3 coplanar, such structure, when utensil sawing more steadily, cutting efficiency is higher.
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 (18)
1. a sawing tool, 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, the bevel pinion that described transmission mechanism also comprises bevel gear wheel and engages 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, the distance of the blade binding face distance motor center line of described first cutter is less than or equal to 10mm, described casing front end is formed with the first grip portions, and described casing rear end is formed with the second grip portions, and described switch is between described first grip portions and described second grip portions.
2. sawing tool as claimed in claim 1, is characterized in that, described first cutter can be replaced by the second cutter, and 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.
3. sawing tool as claimed in claim 2, it is characterized in that, the distance of the saw blade binding face distance motor center line of described second cutter is less than or equal to 10mm, described bevel gear wheel limits a central axis, and the central axis of described bevel gear wheel is mutually vertical with the saw blade binding face of described second cutter with the blade binding face of described first cutter.
4. sawing tool as claimed in claim 3, it is characterized in that, saw blade binding face and the motor center line of described second cutter are coplanar.
5. the sawing tool as described in claim 1-4 any one, is characterized in that, blade binding face and the motor center line of described first cutter are coplanar.
6. the sawing tool as described in claim 1-4 any one, 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, described motor center line and described first center line or described second centerline parallel.
7. the sawing tool as described in claim 1-4 any one, 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, described motor center line and described first center line or described second center line coplanar.
8. the sawing tool as described in claim 1-4 any one, is characterized in that, described motor is positioned at described second grip portions.
9. the sawing tool as described in claim 1-4 any one, 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.
10. sawing tool as claimed in claim 9, it is characterized in that, described first grip portions is formed with the first center line, described second grip portions is formed with the second center line, described power brick forms the 3rd center line, and described 3rd center line and described first center line or described second center line are at an angle.
11. sawing tools as claimed in claim 10, it is characterized in that, described angle is between 0 degree to 90 degree.
12. sawing tools as claimed in claim 11, is characterized in that, the angle ranging from 30 degree.
13. sawing tools as described in claim 1-4 any one, 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.
14. sawing tools as claimed in claim 13, be characterised in that, the nominal voltage of described power brick is at least 10.8 volts.
15. sawing tools as claimed in claim 14, 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, described motor center line and described first center line or described second centerline parallel.
16. sawing tools as claimed in claim 15, is characterized in that, described power brick is connected to described second grip portions and is formed with the 3rd center line, and described 3rd center line and described first center line or described second center line are at an angle.
17. sawing tools as claimed in claim 16, is characterized in that, the angle ranging between 0 degree to 90 degree.
18. sawing tools as claimed in claim 17, is characterized in that, the angle ranging from 30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110061962.4A CN102672268B (en) | 2011-03-11 | 2011-03-11 | Saw cutting cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110061962.4A CN102672268B (en) | 2011-03-11 | 2011-03-11 | Saw cutting cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102672268A CN102672268A (en) | 2012-09-19 |
| CN102672268B true CN102672268B (en) | 2015-07-15 |
Family
ID=46805185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110061962.4A Expired - Fee Related CN102672268B (en) | 2011-03-11 | 2011-03-11 | Saw cutting cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102672268B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317189B (en) * | 2013-06-26 | 2015-10-21 | 宁波鲁茨工具有限公司 | A kind of paired saw blade structure of reciprocating saw |
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 |
| US3748738A (en) * | 1971-12-13 | 1973-07-31 | Wells Manuf Corp | Support means for reciprocating saw blade |
| CN201644927U (en) * | 2010-01-06 | 2010-11-24 | 南京东沛国际贸易集团有限公司 | Transmission mechanism of curved saw |
| CN202192327U (en) * | 2011-03-11 | 2012-04-18 | 南京德朔实业有限公司 | Sawing tool |
-
2011
- 2011-03-11 CN CN201110061962.4A patent/CN102672268B/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 |
| US3748738A (en) * | 1971-12-13 | 1973-07-31 | Wells Manuf Corp | Support means for reciprocating saw blade |
| CN201644927U (en) * | 2010-01-06 | 2010-11-24 | 南京东沛国际贸易集团有限公司 | Transmission mechanism of curved saw |
| CN202192327U (en) * | 2011-03-11 | 2012-04-18 | 南京德朔实业有限公司 | Sawing tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102672268A (en) | 2012-09-19 |
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Granted publication date: 20150715 Termination date: 20200311 |
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