CN109845610A - A kind of bamboo cutting method - Google Patents
A kind of bamboo cutting method Download PDFInfo
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- CN109845610A CN109845610A CN201910282197.5A CN201910282197A CN109845610A CN 109845610 A CN109845610 A CN 109845610A CN 201910282197 A CN201910282197 A CN 201910282197A CN 109845610 A CN109845610 A CN 109845610A
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Abstract
The present invention relates to bamboo harvesting and processing technique fields, disclose a kind of bamboo cutting method: one group is located on same circumference, the disk tooth knife rotation that is arranged symmetrically and revolves cutting bamboo around bamboo central axis；It realizes that the multi-cutter-disk of bamboo is symmetrical, circumferentially successively cuts, makes uniform force in bamboo cutting process, bamboo is avoided to crack, it is ensured that bamboo radial direction quality of tube cutting reduces waste of the bamboo wood in harvesting and process.
Description
Technical field
The present invention relates to a kind of bamboo cutting methods, belong to bamboo harvesting and processing technique field.
Background technique
China occupies first place in the world in terms of the cultivated area of bamboo, accumulation, yield and export amount, is known as " bamboo king
State " good reputation.Bamboo timber resource has extensive economic use value and environmental protection, greening ornamental value, it has become China's forestry money
Source utilizes and the important component of exploitation.China also much can not meet people for the development and utilization of bamboo timber resource at present
Demand, greatly the reason is that because bamboo itself is more crisp the characteristics of bamboo wood itself, fell easily split, hollow unbalance stress
It is easy to split.
The bamboo style of cutting mainly has 2 kinds at present: manually being felled with chopper, is manually felled with dedicated chain saw.Traditional people
Work chopper felling the drawbacks of being still the most common style of cutting, being primarily present is that large labor intensity, low efficiency, kerf quality are low
(notch out-of-flatness and be easy torn because of unbalance stress) etc.；When felling bamboo with dedicated chain saw, the notch of bamboo is more smooth,
But bamboo banking will appear the problem of not sawed-off bamboo is torn from incision in sawing process.It is now more advanced
The bamboo style of cutting be using reciprocating Cutting with chain saw, although working efficiency increases, chain saw quality is big, in addition sawtooth
It crosses slightly, is easy to tear off bamboo bamboo blueness and bursts.Above several methods for felling bamboo, which are not able to achieve, to guarantee to cut after bamboo is cut down
Mouth is smooth and does not crack.Therefore for bamboo it is hollow cutting be easy to appear tearing aiming at the problem that, explore it is a kind of reduction bamboo crack
Bamboo, which cuts new method, has practical application value.
Summary of the invention
The invention aims to provide a kind of bamboo cutting method, realize that the multi-cutter-disk of bamboo is symmetrical, circumferentially layer-by-layer
Cutting, makes uniform force in bamboo cutting process, bamboo is avoided to crack, it is ensured that bamboo radial direction quality of tube cutting.
In order to reach the technical solution that the purpose of the present invention is taken are as follows: one group is located on same circumference, is arranged symmetrically
The rotation of disk tooth knife and around bamboo central axis revolve cutting bamboo, specifically include:
1, cutter is arranged: the connecting rod of two equal lengths hingedly forms V-arrangement knife rest at one end, is in the same plane three
The equal disk tooth knife of diameter is connect on V-arrangement knife rest in isosceles triangle arrangement, respectively with two link rotatables, isoceles triangle
Shape and V-arrangement knife rest share the same axis of symmetry, and two connecting rods can change the angle α of V-arrangement knife rest around hinge joint rotation, realize cutter
Folding enter in cutter so as to bamboo, while when bamboo diameter d variation, α change to adapt to the bamboo of different-diameter, three
Disk tooth swivel move center be located at perpendicular on the same circumference of bamboo central axis, the center of circle of the circle be located at bamboo central axis
On line；If two disk tooth knife centers of rotation on same connecting rod are long away from h, i.e. isosceles triangle waist, disk tooth knife diameter f,
Bamboo wall thickness b, one of disk tooth knife center of rotation are overlapped with two connecting rod hinge points, other two disk tooth swivel is dynamic
Center is away from e=2hsin (α/2), disk tooth knife not interference condition: h > f and α > 2sin-1(f/2/h), bamboo enters cutting tool
Condition: α0>2sin-1[(d+f)/2/h] starts cutting condition: α1=2cos-1[h/ (d+f)] terminates cutting condition: α2=
2cos-1[h/(d+f-2b)]；
2, cutterhead rotation: three disk tooth knives on V-arrangement knife rest rotating around respective central axis constant speed, in the same direction from
Turn, bamboo is cut；
3, cutter revolves: V-arrangement knife rest revolves around bamboo central axis, completes the cutting of bamboo whole circumference；If disk tooth
Knife spin velocity ωr, V-arrangement knife rest revolve angular velocity omegae, take ωr>>ωe, ωeWith ωrIn the same direction, reversely alternating movement, V-arrangement knife
β<180 ° of frame reciprocally swinging corner meets β>2sin-1[h/ (d+f)] and the α of β > 21The cutting of bamboo complete cycle can be completed in condition；
4, tool feeding: changing α and realize Tool in Cutting feeding, circumferentially successively cuts, until cutting bamboo, V-arrangement knife rest
Angle α amount of feeding Δ α=α1-α2。
In above-mentioned bamboo cutting method, three disk tooth knife isosceles triangle arrangements are changed to four on V-arrangement knife rest
A disk tooth knife isosceles trapezoid arrangement is specifically included with adapting to the cutting of larger diameter bamboo:
1, cutter is arranged: the connecting rod of two equal lengths hingedly forms V-arrangement knife rest at one end, is in the same plane four
The equal disk tooth knife of diameter connect in isosceles trapezoid arrangement, respectively with two link rotatables on V-arrangement knife rest, isosceles trapezoid and
V-arrangement knife rest shares the same axis of symmetry, and two connecting rods can change the angle α of V-arrangement knife rest around hinge joint rotation, realize opening for cutter
Close and enter in cutter so as to bamboo, at the same when bamboo diameter d variation, α changes to adapt to the bamboo of different-diameter, four disks
Tooth form knife center of rotation be located at perpendicular on the same circumference of bamboo central axis, the center of circle of the circle be located at bamboo central axis
On；If two disk tooth knife centers of rotation on length of connecting rod g, same connecting rod are long away from h, i.e. isosceles trapezoid waist, disk tooth knife
Diameter f, bamboo wall thickness b, two disk tooth knife center of rotation of inside is away from e1=2 (g-h) sin (α/2), i.e. bottom in isosceles trapezoid
Long, two disk tooth knife center of rotation of outside is away from e2=2gsin (α/2), i.e. isosceles trapezoid bottom length, disk tooth knife are not interfered
Condition: h > f and α > 2sin-1[f/2/ (g-h)], bamboo enters cutting tool condition: 2sin-1[(d+f)/2/(g-h)]>α>
2sin-1[(d+f)/2/g] starts cutting condition: α1=2tan-1{[(d+f)2-h2]0.5/ (2g-h) }, terminate cutting condition: α2
=2tan-1{[(d+f-2b)2-h2]0.5/(2g-h)}；
2, cutterhead rotation: four disk tooth knives on V-arrangement knife rest rotating around respective central axis constant speed, in the same direction from
Turn, bamboo is cut；
3, cutter revolves: V-arrangement knife rest revolves around bamboo central axis, completes the cutting of bamboo whole circumference；If disk tooth
Knife spin velocity ωr, V-arrangement knife rest revolve angular velocity omegae, take ωr>>ωe, ωeWith ωrIn the same direction, reversely alternating movement, V-arrangement knife
β<180 ° of frame reciprocally swinging corner meets β>2sin-1[h/ (d+f)] and β > 2sin-1[2gsin(α1/ 2)/(d+f)] condition, i.e.,
Achievable bamboo complete cycle cutting；
4, tool feeding: changing α and realize Tool in Cutting feeding, circumferentially successively cuts, until cutting bamboo, V-arrangement knife rest
Angle α amount of feeding Δ α=α1-α2。
The beneficial effects of the present invention are the multiple disk tooth knife rotations proposed add the cutting method of revolution, realize
The multi-cutter-disk of bamboo is symmetrical, circumferentially successively cutting, makes uniform force in bamboo cutting process, bamboo is avoided to crack, it is ensured that
Bamboo radial direction quality of tube cutting reduces waste of the bamboo wood in harvesting and process, while multiple disk tooth knife up speed rotations
Improve the working efficiency of cutting bamboo.
Detailed description of the invention
Fig. 1 is bamboo cutting method schematic diagram；
Fig. 2 is bamboo cutting method structural schematic diagram；
Fig. 3 is four cutterhead bamboo cutting method schematic diagrams；
Fig. 4 is four cutterhead bamboo cutting method structural schematic diagrams；
Fig. 5 is bamboo cutting process schematic diagram；
Fig. 6 is the layer-by-layer incision principle figure of bamboo；
In figure, 1: disk tooth knife；2: connecting rod；3: bamboo；4: fastening spring；5: belt wheel；6: belt；7: motor.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.
Embodiment 1
Bamboo cutting method schematic diagram shown in FIG. 1, three disk tooth knives for being located on same circumference, being arranged symmetrically
(1) rotation and around bamboo (3) central axis revolve cutting bamboo (3), specifically include:
1, cutter is arranged: the connecting rod (2) of two equal lengths hingedly forms V-arrangement knife rest at one end, is in the same plane
The equal disk tooth knife (1) of three diameters rotates company in isosceles triangle arrangement, respectively with two connecting rods (2) on V-arrangement knife rest
It connects, isosceles triangle and V-arrangement knife rest share the same axis of symmetry, and two connecting rods (2) can change V-arrangement knife rest around hinge joint rotation
Angle α, realize cutter folding so as to bamboo (3) enter cutter in, while when bamboo (3) diameter d variation when, α change with fit
The bamboo (3) of different-diameter is answered, three disk tooth knife (1) centers of rotation are located at perpendicular to the same of bamboo (3) central axis
On circumference, the center of circle of the circle is located on bamboo (3) central axis；Bamboo (3) diameter d=120mm is set, on same connecting rod (2)
Two disk tooth knife (1) centers of rotation it is long away from h=170mm, i.e. isosceles triangle waist, disk tooth knife (1) diameter f=
80mm, bamboo (3) wall thickness b=10mm, one of disk tooth knife (1) center of rotation are overlapped with two connecting rods (2) hinge joint, separately
Outer two disk tooth knives (1) center of rotation is away from e=2hsin (α/2), disk tooth knife (1) not interference condition: α > 2sin-1(f/
2/h)=27.3 °, i.e., the angle α minimum limit angle of V-arrangement knife rest must be greater than 27.3 °, and bamboo (3) enters cutting tool condition: α0>
2sin-1[(d+f)/2/h]=72.1 °, start cutting condition: α1=2cos-1[h/ (d+f)]=63.6 °, terminate cutting condition:
α2=2cos-1[h/ (d+f-2b)]=38.4 ° (as shown in Figure 5)；
2, cutterhead rotation: three disk tooth knives (1) on V-arrangement knife rest rotating around respective central axis constant speed, in the same direction
Bamboo (3) is cut in rotation；Motor (7) is mounted on connecting rod (2), and motor (7) output shaft drives a disk tooth knife
(1) it rotates while driving other two disk tooth knife (1) constant speed by belt wheel (5) and belt (6), rotating in same direction (such as Fig. 2
It is shown)；
3, cutter revolves: V-arrangement knife rest revolves around bamboo (3) central axis, completes the cutting of bamboo (3) whole circumference；If circle
Disk tooth form knife (1) spin velocity ωr=3000rpm, V-arrangement knife rest revolution angular velocity omegae, take ωr>>ωe, ωeWith ωrIn the same direction,
Reversed alternating movement, outer power drive V-arrangement knife rest are swung around bamboo (3) central axis, V-arrangement knife rest reciprocally swinging corner β < 180 °,
Meet β > 2sin-1[h/ (d+f)]=116.5 ° and β > 2 α1Bamboo can be completed when 180 ° > β > 127.2 ° in=127.2 ° of conditions
(3) complete cycle is cut；
4, tool feeding: changing α and realize Tool in Cutting feeding, circumferentially successively cuts, until cutting bamboo (3), V-arrangement knife
Angle α amount of feeding Δ α=α of frame1-α2=25.2 °；Fastening spring (4) is tension spring, and the both ends of fastening spring (4) are hingedly connected to
Two free ends of two connecting rods (2), the pulling force of fastening spring (4) become α with the layer-by-layer cutting in bamboo (3) cutting process
It is small, realize the auto-feed of cutter.
After the cutting part for determining bamboo (3), entire cutting tool is leaned on for bamboo cutting process schematic diagram shown in fig. 5
Nearly bamboo (3) position to be cut, the angle for increasing V-arrangement knife rest meet α0> 72.1 ° (as shown in Figure 5 a), enters bamboo (3) and cut
In cutter tool；When three disk tooth knives (1) are tangent simultaneously with bamboo (3), three disk tooth knife (1) centers of rotation, which are located at, hangs down
On the same circumference of straight Yu Zhuzi (3) central axis, the center of circle of the circle be located on bamboo (3) central axis, V-arrangement knife rest at this time
Angle α1=63.6 °, to start cut state (as shown in Figure 5 b)；After feed, successively cutting, the angle α of V-arrangement knife rest2
=38.4 °, to cut completion status (as shown in Figure 5 c).
The layer-by-layer incision principle figure of bamboo shown in fig. 6 starts motor (7), three disk teeths into after starting cut state
Shape knife (1) constant speed rotates in same direction, and starts to cut bamboo (3) (as shown in Figure 6 a)；Outer power drive V-arrangement knife rest is around bamboo (3) center
Axis reciprocally swinging realizes the revolution of V-arrangement knife rest, takes 180 ° > β > 127.2 °, completes primary whole circle cutting (as shown in Figure 6 b)；Often
Primary whole circle cutting is completed, cutter is primary (as fig. 6 c) by the pulling force effect auto-feed of fastening spring (4), passes through tune
The pulling force size of whole fastening spring (4) can change the cutting output fed every time, that is, change cutting feed number, and so on
Circulation, until cutting off bamboo (3).
Embodiment 2
Four cutterheads bamboo cutting method schematic diagram shown in Fig. 3, four disk teeths for being located on same circumference, being arranged symmetrically
(1) rotation of shape knife and around bamboo (3) central axis revolve cutting bamboo (3), specifically include:
1, cutter is arranged: the connecting rod (2) of two equal lengths hingedly forms V-arrangement knife rest at one end, is in the same plane
The equal disk tooth knife (1) of four diameters is rotatablely connected on V-arrangement knife rest in isosceles trapezoid arrangement, respectively with two connecting rods (2),
Isosceles trapezoid and V-arrangement knife rest share the same axis of symmetry, and two connecting rods (2) can change the angle of V-arrangement knife rest around hinge joint rotation
α, realize cutter folding so as to bamboo (3) enter cutter in, while when bamboo (3) diameter d variation when, α change to adapt to not
With the bamboo (3) of diameter, four disk tooth knife (1) centers of rotation are located at the same circumference perpendicular to bamboo (3) central axis
Upper, the circle the center of circle is located on bamboo (3) central axis；Set bamboo (3) diameter d=180mm, connecting rod (2) length g=
Two disk tooth knife (1) centers of rotation on 300mm, same connecting rod (2) are long away from h=160mm, i.e. isosceles trapezoid waist, disk teeth
Shape knife (1) diameter f=80mm, bamboo (3) wall thickness b=15mm, inside two disk tooth knife (1) center of rotation is away from e1=2 (g-h)
Sin (α/2), i.e. bottom is long in isosceles trapezoid, and outside two disk tooth knife (1) center of rotation is away from e2=2gsin (α/2), i.e. isosceles
Trapezoidal bottom length, disk tooth knife (1) not interference condition: h > f and α > 2sin-1[f/2/ (g-h)]=33.3 °, i.e. V-arrangement knife rest
Angle α minimum limit angle must be greater than 33.3 °, and bamboo (3) enters cutting tool condition: 2sin-1[(d+f)/2/(g-h)]>α0>
2sin-1[(d+f)/2/g], i.e. 136.5 ° > α0> 51.4 °, start cutting condition: α1=2tan-1{[(d+f)2-h2]0.5/(2g-
H) }=50.0 °, terminate cutting condition: α2=2tan-1{[(d+f-2b)2-h2]0.5/ (2g-h) }=41.2 °；
2, cutterhead rotation: four disk tooth knives (1) on V-arrangement knife rest rotating around respective central axis constant speed, in the same direction
Bamboo (3) is cut in rotation；Motor (7) is mounted on connecting rod (2), and motor (7) output shaft drives a disk tooth knife
(1) it rotates while the other three disk tooth knife (1) constant speed is driven by belt wheel (5) and belt (6), rotates in same direction (such as Fig. 4
It is shown)；
3, cutter revolves: V-arrangement knife rest revolves around bamboo (3) central axis, completes the cutting of bamboo (3) whole circumference；If circle
Disk tooth form knife (1) spin velocity ωr==3000rpm, V-arrangement knife rest revolution angular velocity omegae, take ωr>>ωe, ωeWith ωrTogether
To, reversed alternating movement, outer power drive V-arrangement knife rest is swung around bamboo (3) central axis, realizes the revolution of V-arrangement knife rest, V-arrangement knife rest
β<180 ° of reciprocally swinging corner meets β>2sin-1[h/ (d+f)]=76.0 ° and β > 2sin-1[2gsin(α1/ 2)/(d+f)]=
The cutting of bamboo (3) complete cycle can be completed when 180 ° > β > 154.5 ° in 154.5 ° of conditions；
4, tool feeding: changing α and realize Tool in Cutting feeding, circumferentially successively cuts, until cutting bamboo (3), V-arrangement knife
Angle α amount of feeding Δ α=α of frame1-α2=8.8 °；Fastening spring (4) is tension spring, and the both ends of fastening spring (4) connect with two respectively
Hingedly, the pulling force of fastening spring (4) makes α become smaller with the layer-by-layer cutting in bamboo (3) cutting process to bar (2), every completion
Primary whole circle cutting, cutter is primary by the pulling force effect auto-feed of fastening spring (4), by adjusting fastening spring (4)
Pulling force size can change the cutting output fed every time, that is, change cutting feed number, so on circulate, until cutting off bamboo
Sub (3).
Claims (2)
1. a kind of bamboo cutting method, which is characterized in that one group be located on same circumference, the disk tooth knife that is arranged symmetrically from
Turn and revolve around bamboo central axis to cut bamboo, specifically include:
(1), cutter is arranged: the connecting rod of two equal lengths hingedly forms V-arrangement knife rest at one end, is in the same plane three directly
The equal disk tooth knife of diameter is connect on V-arrangement knife rest in isosceles triangle arrangement, respectively with two link rotatables, isosceles triangle
The same axis of symmetry is shared with V-arrangement knife rest, two connecting rods can change the angle α of V-arrangement knife rest around hinge joint rotation, realize cutter
Folding enters in cutter so as to bamboo, at the same when bamboo diameter change, α changes to adapt to the bamboo of different-diameter, three circles
Disk tooth form knife center of rotation be located at perpendicular on the same circumference of bamboo central axis, the center of circle of the circle be located at bamboo central axis
On；
(2), cutterhead rotation: three disk tooth knives on V-arrangement knife rest are right rotating around respective central axis constant speed, rotation in the same direction
Bamboo is cut；
(3), cutter revolves: V-arrangement knife rest revolves around bamboo central axis, completes the cutting of bamboo whole circumference；
(4), tool feeding: changing α and realize Tool in Cutting feeding, circumferentially successively cuts, until cutting bamboo.
2. bamboo cutting method according to claim 1, which is characterized in that three disk tooth knives etc. on V-arrangement knife rest
Lumbar triangle shape arrangement is changed to four disk tooth knife isosceles trapezoid arrangements, specifically includes:
(1), cutter is arranged: the connecting rod of two equal lengths hingedly forms V-arrangement knife rest at one end, is in the same plane four directly
The equal disk tooth knife of diameter is connect on V-arrangement knife rest in isosceles trapezoid arrangement, respectively with two link rotatables, isosceles trapezoid and V
Shape knife rest shares the same axis of symmetry, and two connecting rods can change the angle α of V-arrangement knife rest around hinge joint rotation, realize opening for cutter
Close and enter in cutter so as to bamboo, at the same when bamboo diameter change, α changes to adapt to the bamboo of different-diameter, four disks
Tooth form knife center of rotation be located at perpendicular on the same circumference of bamboo central axis, the center of circle of the circle be located at bamboo central axis
On；
(2), cutterhead rotation: four disk tooth knives on V-arrangement knife rest are right rotating around respective central axis constant speed, rotation in the same direction
Bamboo is cut；
(3), cutter revolves: V-arrangement knife rest revolves around bamboo central axis, completes the cutting of bamboo whole circumference；
(4), tool feeding: changing α and realize Tool in Cutting feeding, circumferentially successively cuts, until cutting bamboo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910282197.5A CN109845610A (en) | 2019-04-09 | 2019-04-09 | A kind of bamboo cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910282197.5A CN109845610A (en) | 2019-04-09 | 2019-04-09 | A kind of bamboo cutting method |
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| Publication Number | Publication Date |
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| CN109845610A true CN109845610A (en) | 2019-06-07 |
Family
ID=66903596
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910282197.5A Pending CN109845610A (en) | 2019-04-09 | 2019-04-09 | A kind of bamboo cutting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115152576A (en) * | 2022-08-03 | 2022-10-11 | 四川锐诺生物科技有限公司 | Device for cutting bamboos |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4847997A (en) * | 1987-08-11 | 1989-07-18 | Troy Petty | Tubing cutters |
| EP0730933A1 (en) * | 1995-03-07 | 1996-09-11 | VULKAN LOKRING GmbH & Co. KG | Pipe cutting pliers |
| JP2011041476A (en) * | 2009-08-19 | 2011-03-03 | Marudai Tekko Kk | Bamboo cutter |
| CN104802246A (en) * | 2015-05-18 | 2015-07-29 | 湖州吴兴威国机械厂 | Moso bamboo cutter |
| US9908185B1 (en) * | 2016-11-21 | 2018-03-06 | Jiin Haur Industrial Co., Ltd. | Cutting device with wheeled blades |
-
2019
- 2019-04-09 CN CN201910282197.5A patent/CN109845610A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4847997A (en) * | 1987-08-11 | 1989-07-18 | Troy Petty | Tubing cutters |
| EP0730933A1 (en) * | 1995-03-07 | 1996-09-11 | VULKAN LOKRING GmbH & Co. KG | Pipe cutting pliers |
| JP2011041476A (en) * | 2009-08-19 | 2011-03-03 | Marudai Tekko Kk | Bamboo cutter |
| CN104802246A (en) * | 2015-05-18 | 2015-07-29 | 湖州吴兴威国机械厂 | Moso bamboo cutter |
| US9908185B1 (en) * | 2016-11-21 | 2018-03-06 | Jiin Haur Industrial Co., Ltd. | Cutting device with wheeled blades |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115152576A (en) * | 2022-08-03 | 2022-10-11 | 四川锐诺生物科技有限公司 | Device for cutting bamboos |
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Application publication date: 20190607 |