CN102986361A - Cutting element - Google Patents
Cutting element Download PDFInfo
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- CN102986361A CN102986361A CN2011102783869A CN201110278386A CN102986361A CN 102986361 A CN102986361 A CN 102986361A CN 2011102783869 A CN2011102783869 A CN 2011102783869A CN 201110278386 A CN201110278386 A CN 201110278386A CN 102986361 A CN102986361 A CN 102986361A
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- cutting element
- installing hole
- abutting part
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Abstract
The invention relates to a cutting element comprising an element main body, an installation hole which is arranged in the element main body, and at least two cutting parts which are arranged on the edge of the element main body; the cutting element also comprises jointed parts which correspond to the cutting parts one by one; and the angles between the connecting lines of the cutting parts and the corresponding jointed parts and the radial connecting lines of the jointed parts and the center of the cutting element are 0 degree to 60 degrees. The cutting element is provided with a plurality of cutting parts, and thus has longer service life.
Description
Technical field
The present invention relates to a kind of cutting element.
Background technology
In some garden tools, in order to cut weeds or the trees in the garden, need to cutting tool be installed at the working head of instrument.Thereby then driving the cutting tool motion in manual or electronic mode cuts object.Such cutting tool has many kinds, such as the metal wire with larger intensity or plastic cord, with the rotary-chain of sharp knife edges, the cutting blade that metal material is made etc.
But in the work of reality, particularly in the situation that the cutting tool High Rotation Speed, cutting tool often weares and teares comparatively fast.Will cause the obvious decline of cutting effect even can't finish cutting work in case produce wearing and tearing, so force the user to change continually cutting tool.Loaded down with trivial details more changes jobs meeting labor intensive and time, and buys the rising that cutting tool for subsequent use also can cause cost.
When carrying out ground cutting work, often have the barrier of the impact cuttings such as stone, tree root on the ground in addition.The hardness ratio of these barriers is larger, and cutting tool further strengthens its rate of wear and renewal frequency behind the collision obstacle it being caused very large damage rigidly.Therefore, be necessary to design when a kind of cutting tool makes it run into barrier and can automatically avoid, avoid and its collision.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of cutting element that has than the long life.
The present invention solves the technical scheme that the prior art problem adopts: a kind of cutting element, comprise main body, be located at installing hole on the main body, be located at least two cutting parts of body rim, cutting element also comprises and cutting part abutting part one to one, and the angular range of the radially line at the line between cutting part and the corresponding abutting part and the center of abutting part and cutting element is that 0 degree is to 60 degree.
Preferably, abutting part is positioned at from the installing hole extension and with installing hole and is communicated with.
Preferably, abutting part is about the Central Symmetry of cutting element.
Preferably, abutting part has arc-shaped curved surface.
Preferably, cutting element comprises from installing hole outward extending some with respect to the centrosymmetric extension of cutting element, and cutting part is on extension.
Preferably, extension narrows down gradually along its bearing of trend.
Preferably, cutting part is on a side surface of extension.
Preferably, cutting part is on two side surfaces of extension.
Another object of the present invention is to provide the cutting element of the movable cooperation of a kind of bearing pin.The technical scheme that adopts is: a kind of cutting element, comprise main body, be located at installing hole on the main body, be located at least two cutting parts of body rim, cutting element also comprises and cutting part abutting part one to one, abutting part is communicated with from the installing hole extension and with installing hole, and the radius of installing hole is not less than 8 millimeters.
Preferably, the radius of installing hole is 13 millimeters.
Compared with prior art, beneficial effect of the present invention is: cutting element has a plurality of cutting parts, and the movable cooperation bearing pin of these a plurality of cutting parts to be alternately carrying out cutting work, thereby has than the long life.
Description of drawings
Above-described purpose of the present invention, technical scheme and beneficial effect can by the following detailed description that can realize specific embodiments of the invention, be described and clearly acquisition simultaneously by reference to the accompanying drawings.
Identical label in accompanying drawing and the specification is used for representing element identical or that be equal to symbol.
Fig. 1 is the cutting tool schematic diagram with cutting assembly of first embodiment of the invention.
Fig. 2 is cutting assembly schematic diagram shown in Figure 1.
Fig. 3 is the cutting assembly schematic diagram of second embodiment of the invention.
Fig. 4 is the cutting assembly schematic diagram of third embodiment of the invention.
Fig. 5 is the exploded perspective view of cutting assembly shown in Figure 1.
Fig. 6 is the exploded perspective view of another angle of cutting assembly shown in Figure 1.
Fig. 7 is cutting element in the cutting assembly shown in Figure 1 and the schematic diagram of bearing pin.
Fig. 8 is cutting element in the cutting assembly of fourth embodiment of the invention and the schematic diagram of bearing pin.
Fig. 9 is cutting element in the cutting assembly of fifth embodiment of the invention and the schematic diagram of bearing pin.
Figure 10 is cutting element in the cutting assembly of sixth embodiment of the invention and the schematic diagram of bearing pin.
Figure 11 is cutting element in the cutting assembly of seventh embodiment of the invention and the schematic diagram of bearing pin.
Figure 12 is cutting element in the cutting assembly of eighth embodiment of the invention and the schematic diagram of bearing pin.
Figure 13 is cutting element in the cutting assembly of ninth embodiment of the invention and the schematic diagram of bearing pin.
Figure 14 is cutting element in the cutting assembly of tenth embodiment of the invention and the schematic diagram of bearing pin.
Figure 15 is cutting element in the cutting assembly of eleventh embodiment of the invention and the schematic diagram of bearing pin.
Figure 16 is the schematic diagram of the first cutting part when primary importance of the cutting element among Fig. 1.
Figure 17 is the schematic diagram of the first cutting part of the cutting element among Fig. 1 when running into barrier.
Figure 18 is that the cutting element among Fig. 1 runs into the schematic diagram that moves relative to bearing pin behind the barrier.
Figure 19 is the schematic diagram of the second cutting part when the second place of the cutting element among Fig. 1.
1, mower 2, housing 3, power source
4, cutting assembly 5, rotating shaft 6, rotating shaft axis
7, output shaft 8, transmission device 9, chassis
10, retaining element 11, cutting element 12, top bottom-disc
13, low bottom-disc 14, drive link 15, bearing pin
16, bearing pin axis 17, pin shaft hole 18, installing hole
19, contact-making surface 20, through hole 21, retaining wall
22, side surface 23, cannelure 24, abutting part
25, cutting part 26, extension 27, fixture
28, barrier 29, bottom 30, top
31, the first side 32, the second side 33, boss
34, main body 241, the first abutting part 242, the second abutting part
251, the first cutting part 252, the second cutting part A, installing hole cross-sectional area
B, bearing pin cross-sectional area L1, radially line L2, line
O, center
Embodiment
Be illustrated in figure 1 as the mower 1 of one embodiment of the invention.Mower 1 has housing 2, has in the housing 2 as power source 3, and power source 3 can be motor or other forms of power supplying apparatus.Power source 3 has output shaft 7.Mower 1 also comprises cutting assembly 4 towards the bottom on ground.Certainly cutting assembly 4 is not limited to be arranged on the bottom of mower 1, and this cutting assembly 4 also can be installed in the positions such as its front portion or rear portion.After mower 1 normal operation, behind cutting assembly 4 high-speed motions ground grass is cut.The forms of motion of cutting assembly 4 can be the forms such as rotation, straight reciprocating motion or rolling.And cutting assembly 4 also is not limited to be installed on the mower 1, and garden tools such as shrub machine, mower can be installed the cutting assembly 4 that the present invention protects, and all have the instrument of cutting power can install the cutting assembly 4 that the present invention protects.
Be the cutting assembly 4 of one embodiment of the invention as depicted in figs. 1 and 2.Cutting assembly 4 has rotating shaft 5, and cutting assembly 4 can rotate around the axis 6 of rotating shaft 5.Be provided with transmission device 8 between the output shaft 7 of rotating shaft 5 and power source 3, drive rotating shaft 5 by transmission device 8 power sources 3 and be rotated.Power source 3 control ground drive rotating shaft 5 and are rotated in the forward or counter-rotate.Transmission device 8 can be the common Planetary Gear Transmission in this area or belt transmission.In the present embodiment, cutting assembly 4 also comprises the chassis 9 of rotating around the axis 6 of rotating shaft 5.Chassis 9 is disks of a thin type.Chassis 9 consists of the plane of a vertical rotating shaft axis 6, its central openings and this perforate and rotating shaft 5 sockets.Rotating shaft 5 is positioned at the center on chassis 9.By axial retaining element 10, chassis 9 can not produce with rotating shaft 5 and move axially, and rotate with rotating shaft 5 on chassis 9.
As shown in Figure 5 and Figure 6, cutting assembly 4 also comprises bearing pin 15.In the present embodiment, bearing pin 15 is arranged on the chassis 9 regularly, thereby so that bearing pin 15 itself rotate around rotating shaft axis 6 along with the rotation on chassis 9.The axis 16 of bearing pin 15 be arranged in parallel with the axis 6 of rotating shaft 5.9 circumferential edges also is provided with pin shaft hole 17 on the chassis, and the inwall of pin shaft hole 17 is provided with screw thread, and pin shaft hole 17 and fixture 27 are fixed on bearing pin 15 on the chassis 9 together.Fixture 27 is pad in the present embodiment.Pad can be wholely set with bearing pin 15, also can non-ly be wholely set.In the present embodiment, the diameter of bearing pin 15 is 5 millimeters to 6 millimeters.This is because bearing pin 15 in the course of the work can High Rotation Speed, if bearing pin 15 is meticulous, internal stress not and easily damages.If bearing pin 15 is excessively thick, quality is just larger, rotates equally and the energy that consumes is also just larger.Bearing pin 15 and cutting element 11 connect one by one, so bearing pin 15 and quantity are greater than or equal to the quantity of cutting element 11.
Among the first embodiment as shown in Figure 7, cutting element 11 integral body are roughly centrosymmetric structure.Cutting element 11 has main body 34, and main body 34 is provided with installing hole 18 and axially passes to hold bearing pin 15.The cross-sectional area A of installing hole 18 on vertical rotating shaft axis 6 directions is greater than the cross-sectional area B of bearing pin 15, so that bearing pin 15 can axially pass this installing hole 18 easily.And after bearing pin 15 passed installing hole 18, installing hole 18 also had certain space.The radius of installing hole 18 can not be less than 8 millimeters.This is because because the diameter of bearing pin 15 is 5 to 6 millimeters, unhinderedly passes installing hole 18 for making bearing pin 15 millis, and the radius of installing hole 18 just can not be less than 8 millimeters.In the present embodiment, the radius of installing hole 18 is 13 millimeters.Installing hole 18 is loose fit with bearing pin 15, and bearing pin 15 can be radially mobile in installing hole 18.Installing hole 18 also has the contact-making surface 19 that contacts with bearing pin 15.Just produce interaction force behind the contact-making surface 19 of installing hole 18 and the side butt of bearing pin 15.When cutting element 11 with chassis 9 after rotating shaft axis 6 rotates, cutting element 11 will produce along rotating shaft 5 centrifugal force radially.The generation of centrifugal force is caused around rotating shaft axis 6 rotations by cutting element 11, as long as cutting element 11 produces rotation, it just produces centrifugal force.The effect of centrifugal force is radially extrapolated cutting element 11.Because bearing pin 15 is fixed on the chassis 9, itself can not move.Behind centrifugal force pulls cutting element 11, cutting element 11 is relative the moving radially of bearing pin 15 generations just.Thereby the position of bearing pin 15 in installing hole 18 produced variation.Behind contact-making surface 19 butts of the side of bearing pin 15 and cutting element 11, bearing pin 15 just can offer cutting element 11 radial effect power and offset centrifugal force.In the present embodiment, installing hole 18 is for being arranged on the through hole 20 of cutting element 11 central authorities.The center superposition of the center of through hole 20 and cutting element 11.In other embodiment, the center of through hole 20 can not overlap with the center of cutting element 11 yet.In the present embodiment, contact-making surface 19 is for forming the retaining wall 21 of through hole 20.Retaining wall 21 is positioned at the circumference side of through hole 20, and retaining wall 21 can contact with the side surface 22 of bearing pin 15.
As shown in Figure 7, be positioned on the contact-making surface 19 at installing hole 18 edges and also have abutting part 24.Abutting part 24 and installing hole 18 are that the space is communicated with, so bearing pin 15 can move freely in abutting part 24 He in the installing hole 18.Bearing pin 15 can be at 24 li of abutting parts and cutting element 11 butts.Bearing pin 15 also can move to the installing hole 18 from abutting part 24.Abutting part 24 mainly carries out spacing to bearing pin 15.Because cutting element 11 and bearing pin 15 cooperate for activity radially, bearing pin 15 can contact with cutting element 11 in any one position of contact-making surface 19.But this contact position is also unstable, can make bearing pin 15 leave this contact position if having once very little External Force Acting, thereby enter the another one contact position.And the effect of abutting part 24 is exactly when bearing pin 15 contacts with cutting element 11, limits bearing pin 15 in the abutting part 24 interior contacts of predefined contact-making surface 19, and keeps stable state.Unless have enough large external force to reach or surpass preset value, otherwise bearing pin 15 can be all the time at these abutting part 24 interior contact cutting elements 11.In addition, the quantity of abutting part 24 is at least two, namely has at least two abutting parts 24 so that bearing pin can or switch between these two abutting parts 24 in contact in these two abutting parts respectively.In the present embodiment, abutting part 24 is 6, and is evenly distributed on the contact-making surface 19.The center of two adjacent abutting parts 24 is 60 degree to the angle at the center of installing hole 18.In addition, the abutting part 24 that is positioned on the contact-making surface 19 is arc-shaped curved surface.Mate on the surface of this arc-shaped curved surface and bearing pin 15, closely contacts with abutting part 24 thereby be convenient to bearing pin 15.This arc-shaped curved surface directly makes progress away from the center evagination of cutting element 11, and the subsequent corrosion of abutting part 24 is less than the subsequent corrosion of installing hole 18.Certainly, this abutting part 24 is not limited to the form of arc-shaped curved surface, and abutting part 24 can be the form of the convenient location such as groove, claw, wedge shape.
For realizing dissection, cutting element 11 also has the cutting part 25 at the main body of being located at 34 edges.As shown in Figure 7, cutting element 11 is along extending outward extension 26 from installing hole 18.And extension 26 is positioned at the outer fringe position of cutting element 11.In the present embodiment, cutting element 11 comprises 6 extensions 26, and extension 26 is about the Central Symmetry setting of cutting element 11.Each extension 26 has two roughly along the side that cutting element 11 radially extends, these two sides toward the outer side, and these two sides are not strict being parallel to each other.Its extended line can intersect.In the present embodiment, the cross section of extension 26 be roughly one trapezoidal, have substantially parallel bottom 29 and top 30, and two sides that connect bottom 29 and top 30.Two sides are the first side 31 and the second side 32.Two sides 31 and 32 extension line can intersect.Bottom 29 is arranged on the place of the installing hole 18 of more close cutting element 11, and top 30 is arranged on further from the place of installing hole 18.Cutting part 25 namely is positioned on the first side 31 of extension 26.And cutting part 25 is arranged at from top 30 basically until on the first side 31 of bottom 29.Owing on the first side 31 of each extension 26 cutting part 25 being set, therefore in the present embodiment, the quantity of cutting part 25 is 6, also is the Central Symmetry about cutting element 11.The benefit that arranges like this is that the duty of each cutting part 25 of cutting element 11 is consistent.
It should be noted that in the present embodiment, the abutting part 24 of cutting element 11 and cutting part 25 all are the Central Symmetries about cutting element 11, and the quantity of abutting part 24 is equal with cutting part 25 quantity.There is one to one relation in cutting part 25 with the abutting part 24 of contact-making surface 19 in addition.As shown in Figure 7, take the first cutting part 251 and first abutting part 241 corresponding with the first cutting part 251 as example.The first cutting part 251 and the first abutting part 241 lay respectively at the both sides at cutting element 11 centers.And the line between the first cutting part 251 and the first abutting part 241 has roughly passed through the center of cutting element 11, therefore can say that also the first cutting part 251 and the first abutting part 241 roughly are positioned at the two ends of cutting element 11 diameters.Certainly, the present invention does not limit the center that line between the first cutting part 251 and the first abutting part 241 necessarily passes through cutting element 11, but the corresponding relation of between gets final product within the specific limits.Show according to experimental data, line L2 between radially line L1 between the center of the first abutting part 241 and cutting element 11 and the first cutting part 251 and corresponding the first abutting part 241, radially between line L1 and the line L2 formed angular range at 0 degree to 60 degree.The benefit that arranges like this is that the blade of cutting part 25 forms more satisfactory line of cut, helps to improve cutting efficiency when cutting element 11 centers on rotating shaft axis 6 rotary work.Certainly in preferred embodiment, radially the angular range between line L1 and the line L2 is spent to 30 degree 0.In the present embodiment, radially the angle between line L1 and the line L2 is 0 degree.
Cutting element 11 has a plurality of cutting positions.Under each position, all exist a cutting part 25 and its corresponding abutting part 24 to be in the state of work, and other cutting part 25 and its corresponding abutting part 24 state of not being in work simultaneously.As shown in figure 16, power source 3 drives rotating shaft 5 rotations, drives chassis 9 and rotates around rotating shaft axis 6 with the bearing pin 15 that is fixed on the chassis 9.Because cutting element 11 is socketed on the bearing pin 15, cutting element 11 also rotates around rotating shaft axis 6, and has produced thus centrifugal force.This centrifugal force is along the radius of rotating shaft axis 6 and towards the direction away from axis 6.Therefore under the effect of centrifugal force, cutting element 11 relative bearing pins 15 produce and move radially, until bearing pin 15 and the first abutting part 241 butts.The first abutting part 241 is with after bearing pin 15 contacts, and bearing pin 15 offers cutting element 11 active forces with first abutting part 241.The centrifugal force equal and opposite in direction that this active force just in time produces with cutting element 11, opposite direction.This active force and centrifugal force are cancelled out each other thus, and bearing pin 15 is positioned at the first abutting part 241 and cutting element 11 butts all the time.Cutting element 11 just and bearing pin 15 maintain a metastable position relationship.And the first cutting part 251 of the first abutting part 241 correspondences just is in cut state at this moment, and the first cutting part 251 is positioned at the outermost on chassis 9, conveniently treats cut substrate (such as weeds, shrub etc.) and cuts.This moment, cutting element 11 just was in the first cutting position, remain a constant speed under the prerequisite of work keeping cutting tool 1, cutting element 11 is in the first cutting position all the time, and the first abutting part 241 all the time with bearing pin 15 butts, the first corresponding cutting part 251 is carrying out cutting work all the time; Other abutting part 24 discord bearing pins 15 butts, corresponding cutting part 25 does not carry out cutting work yet.But when cutting element 11 switches to the second cutting position, as shown in figure 19, the second abutting part 242 and bearing pin 15 butts, the second cutting part 252 just carries out cutting work.Therefore when cutting element 11 is positioned at cutting position, have and only have an abutting part 24 to contact with bearing pin 15, the cutting part 25 of these abutting part 24 correspondences carries out cutting work.When cutting element 11 ceaselessly changed cutting position around rotating shaft axis 6 rotations, the cutting part 25 on the cutting element 11 will be selected a ground and carry out cutting work.And each cutting part 25 has an opportunity to be in cut state, thereby makes a plurality of cutting part 25 alternatelies carry out cutting work.So just greatly improved the service life of cutting element 11.Suppose to have on the cutting element N cutting part, this cutting element just is increased to N its service life doubly compared to the common cutting element that only has 1 cutting part so.
As shown in Figure 8 the cutting element 11 of the 4th embodiment please.The cutting element 11 of cutting element 11 among the 4th embodiment and the first embodiment shown in Figure 7 is substantially similar.Unique distinctive points is the installing hole 18 of cutting element 11.In the 4th embodiment, the boss 33 on installing hole 18 and the chassis 9 complements each other to form cannelure.The radial width of this cannelure makes things convenient for bearing pin 15 to move in cannelure also greater than the diameter of bearing pin 15.The periphery wall of cannelure is the contact-making surface 19 that contacts with bearing pin 15.Abutting part 24 is positioned at too on the contact-making surface 19 and with installing hole 18 and is communicated with.Abutting part 24 and cutting part 25 be all about the Central Symmetry of cutting element 11, and have one to one relation.
As shown in Figure 9 the cutting element 11 of the 5th embodiment please.In the 5th embodiment, cutting element 11 has 4 abutting parts 24.Installing hole 18 is the structure of general square shape.Embodiment similarly is before, installing hole 18 same and 4 abutting part 24 spaces connections.And installing hole 18 and abutting part 24 have roughly formed cross-shaped groove structure.Bearing pin 15 can connect with installing hole 18 or abutting part 24 interior activities.Cutting element 11 has 4 extensions 26.Extension 26 is square structure, and cutting part 25 is positioned on its two sides.The benefit that arranges like this is, when cutting element 11 turned clockwise around rotating shaft axis 6, one of them cutting part 25 that is on the extension 26 of duty carried out cutting work.When cutting element 11 was rotated counterclockwise, another one cutting part 25 just can carry out cutting work, thereby when having avoided cutting tool 1 rotating to switch, also needed additionally to carry out the work of dismounting cutting element 11, had improved operating efficiency.
As shown in Figure 10 the cutting element 11 of the 6th embodiment please.In the 6th embodiment, cutting element 11 has two cutting parts 25 and two abutting parts 24.Installing hole 18 and two abutting part 24 same spaces are communicated with, thereby form yi word pattern groove structure.Abutting part 24 is positioned at the two ends of this yi word pattern groove.Bearing pin 15 can move in this yi word pattern groove.Have two square extensions 26 on the cutting element 11, extension 26 is about the Central Symmetry setting of cutting element 11.Each extension 26 is respectively equipped with cutting part 25.
As shown in Figure 11 the cutting element 11 of the 7th embodiment please.In the 7th embodiment, installing hole 18 and abutting part 24 among the installing hole 18 of cutting element 11 and abutting part 24 and the first embodiment are similar.Main distinctive points is extension 26.In the present embodiment, extension 26 same Central Symmetries about cutting element 11.And extension 26 has top 29, bottom 30, the first side 31 and the second side 32 equally.Top 29 is tapered.Bottom 30 more close installing holes 18.Cutting part 25 also is positioned on the first side 31.But main distinctive points is the second side 32.The second side 32 has bending part, so extension 26 has the irregular polygon structure.
As shown in Figure 12 the cutting element 11 of the 8th embodiment please.In the 8th embodiment, installing hole 18 and abutting part 24 among the installing hole 18 of cutting element 11 and abutting part 24 and the first embodiment are similar.Main distinctive points is the cutting part 25 on extension 26 and the extension 26.The first side 31 of extension 26 is identical with the shape of the second side 32, and axis is symmetrical.Has respectively cutting part 25 on the first side 31 and the second side 32.The reason that arranges like this and the situation of the 3rd embodiment are similar, for fear of cutting tool 1 rotating when switching, additionally carry out the work of dismounting cutting element 11.
As shown in Figure 13 the cutting element 11 of the 9th embodiment please.In the 9th embodiment, installing hole 18 and abutting part 24 among the installing hole 18 of cutting element 11 and abutting part 24 and the first embodiment are similar.Main distinctive points is extension 26.Extension 26 has top 29, bottom 30, the first side 31 and the second side 32 equally.Top 29 is tapered, and 29 intersect on the top the first side 31 and the second side 32.Bottom 30 more close installing holes 18.Cutting part 25 also is positioned on the first side 31.The first side 31 basic maintenance planar shaped, and the second side 32 has bending part.Whole extension 26 roughly is trapezoidal shape, and cutting part 25 is positioned on the trapezoidal base.
As shown in Figure 14 the cutting element 11 of the tenth embodiment please.In the tenth embodiment, installing hole 18 and abutting part 24 among the installing hole 18 of cutting element 11 and abutting part 24 and the first embodiment are similar.But abutting part 24 and cutting part 25 are not to concern one to one.In the present embodiment, cutting element 11 has 12 about its centrosymmetric extension 26.Each extension 26 is structure triangular in shape roughly.Cutting part 25 is positioned at this leg-of-mutton side.Cutting part 25 on all extensions 26 also is the Central Symmetry about cutting element 11.But, the cutting part 25 on each abutting part 24 corresponding 2 adjacent extension 26 and this extension 26.During work, behind abutting part 24 and bearing pin 15 butts, 2 corresponding cutting parts 25 just begin cutting work.The benefit that two cutting parts 25 are worked simultaneously is to have increased cut surface, has improved cutting efficiency.
As shown in Figure 15 the cutting element 11 of the 11 embodiment please.Installing hole 18 and abutting part 24 among the installing hole 18 of cutting element 11 and abutting part 24 and the first embodiment are similar.Main distinctive points is extension 26.The first side 31 of extension 26 is respectively the different curve of radian with the second side 32, rather than straight line.Cutting part 25 is positioned on the first side 31, and the blade of cutting part 25 also is that curve is arranged, and forms the cutting of tulwar formula.
Below introduce in detail the working method of lower cutting assembly: at first, under power drive, rotating shaft 5 drives bearing pin 15 and cutting element 11 together around rotating shaft axis 6 high speed rotating by chassis 9 or other modes.Because the radially movable relation that cooperates of cutting element 11 and bearing pin 15, cutting element 11 has under the centrifugal action along the outside trend that moves in axis 6 footpaths producing because of rotation, thereby makes contact-making surface 19 butts of bearing pin 15 and cutting element 11.In the first abutting part 241 of contact-making surface 19, the butt that bearing pin 15 and cutting element 11 are more stable.And this moment and this first abutting part 241 the first corresponding cutting parts 251 are in the first cutting position, carry out cutting work, as shown in figure 16.In cutting process, when the first cutting part 251 ran into barrier 27, barrier 27 touched the first cutting part 251 and offers its external force, as shown in figure 17.When external force met or exceeded preset value, cutting element 11 produced relative to bearing pin 15 and moves, so that bearing pin 15 breaks away from this first abutting part 241.And beginning in installing hole 18 interior movements until enter next abutting part 24, as shown in figure 18.This moving direction is random, i.e. next abutting part 24 and uncertain.Along with the movement of cutting element 11, first cutting part 251 has also left the first cutting position to avoid the collision with barrier.Certainly, cutting element 11 produces the reason that moves relative to bearing pin 15 and is not limited to the situation that cutting part 25 has run into barrier.When cutting element 11 when the rotating speed of rotating shaft axis 6 changes, cutting element 11 also can produce relative to bearing pin 15 and move.Those skilled in the art can know, after cutting element 11 changed rotating speeds, the centrifugal force that rotation produces is corresponding changing also, cutting element 11 all relatively bearing pin 15 generations move.After bearing pin 15 entered into the second abutting part 242, the second cutting part 252 of these the second abutting part 242 correspondences also entered into the second cutting position, thereby proceeded cutting, as shown in figure 19.Whole cutting element 11 has a plurality of cutting parts 25 and can cut, thereby has greatly prolonged the service life of cutting element 11, and cutting element 11 also can be avoided when running into barrier simultaneously, thereby avoids causing damage with the collision of barrier.
The present invention is not limited to aforementioned embodiments, and those skilled in the art also may make other changes under the enlightenment of the technology of the present invention marrow, but as long as function and the present invention of its realization are same or similar, all should be covered by in the protection domain of the present invention.
Claims (10)
1. cutting element, comprise main body, be located at installing hole on the described main body, be located at least two cutting parts of described body rim, it is characterized in that: described cutting element also comprises and described cutting part abutting part one to one, and the angular range of the radially line at the line between described cutting part and the corresponding described abutting part and the center of described abutting part and described cutting element is that 0 degree is to 60 degree.
2. cutting element according to claim 1 is characterized in that: described abutting part extends and is communicated with described installing hole from described installing hole.
3. cutting element according to claim 2, it is characterized in that: described abutting part is about the Central Symmetry of described cutting element.
4. cutting element according to claim 2, it is characterized in that: described abutting part has arc-shaped curved surface.
5. cutting element according to claim 1, it is characterized in that: described cutting element comprises from described installing hole outward extending some with respect to the centrosymmetric extension of described cutting element, and described cutting part is on described extension.
6. cutting element according to claim 5, it is characterized in that: described extension narrows down gradually along its bearing of trend.
7. cutting element according to claim 6, it is characterized in that: described cutting part is on a side surface of described extension.
8. cutting element according to claim 6, it is characterized in that: described cutting part is on two side surfaces of described extension.
9. cutting element, comprise main body, be located at installing hole on the described main body, be located at least two cutting parts of described body rim, it is characterized in that: described cutting element also comprises and described cutting part abutting part one to one, described abutting part is communicated with from described installing hole extension and with described installing hole, and the radius of described installing hole is not less than 8 millimeters.
10. cutting element according to claim 9, it is characterized in that: the radius of described installing hole is 13 millimeters.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102783869A CN102986361A (en) | 2011-09-19 | 2011-09-19 | Cutting element |
| PCT/CN2012/080984 WO2013040982A1 (en) | 2011-09-19 | 2012-09-05 | Cutting element, cutting assembly and cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102783869A CN102986361A (en) | 2011-09-19 | 2011-09-19 | Cutting element |
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|---|---|
| CN102986361A true CN102986361A (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102783869A Pending CN102986361A (en) | 2011-09-19 | 2011-09-19 | Cutting element |
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| WO2020063609A1 (en) * | 2018-09-27 | 2020-04-02 | 南京德朔实业有限公司 | Lawnmower |
| CN111631036A (en) * | 2020-06-11 | 2020-09-08 | 嘉兴卉景园林有限公司 | Garden branch trimmer capable of being sterilized synchronously |
| CN112166860A (en) * | 2020-09-25 | 2021-01-05 | 东北林业大学 | Forestry is cut irritates with class planet type serrated knife |
| US11122737B2 (en) | 2018-09-27 | 2021-09-21 | Nanjing Chervon Industry Co., Ltd. | Blade assembly for a lawn mower |
| CN114929008A (en) * | 2019-11-25 | 2022-08-19 | 森拉天时卢森堡有限公司 | Cutting element, use thereof and mobile cutting device with same |
| US11641795B2 (en) | 2018-09-27 | 2023-05-09 | Nanjing Chervon Industry Co., Ltd. | Lawn mower |
| USD995569S1 (en) | 2019-04-18 | 2023-08-15 | Nanjing Chervon Industry Co., Ltd. | Mower blade assembly |
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| CN103444353A (en) * | 2013-09-09 | 2013-12-18 | 苏州安必瑟斯机电技术有限公司 | Cutting blade |
| CN108990755A (en) * | 2018-07-09 | 2018-12-14 | 罗琴 | A kind of novel robot logger people |
| CN108990756A (en) * | 2018-07-09 | 2018-12-14 | 罗琴 | A kind of Multifucntional robot logger people |
| USD996471S1 (en) | 2018-09-27 | 2023-08-22 | Nanjing Chervon Industry Co., Ltd. | Mower blade assembly |
| USD997998S1 (en) | 2018-09-27 | 2023-09-05 | Nanjing Chervon Industry Co., Ltd. | Mower blade |
| US12041874B2 (en) | 2018-09-27 | 2024-07-23 | Nanjing Chervon Industry Co., Ltd. | Blade assembly for a lawn mower |
| US11122737B2 (en) | 2018-09-27 | 2021-09-21 | Nanjing Chervon Industry Co., Ltd. | Blade assembly for a lawn mower |
| US11246260B2 (en) | 2018-09-27 | 2022-02-15 | Nanjing Chervon Industry Co., Ltd. | Lawn mower with blade and mounting assembly |
| US11997944B2 (en) | 2018-09-27 | 2024-06-04 | Nanjing Chervon Industry Co., Ltd. | Blade assembly for a lawn mower |
| US11641795B2 (en) | 2018-09-27 | 2023-05-09 | Nanjing Chervon Industry Co., Ltd. | Lawn mower |
| USD987691S1 (en) | 2018-09-27 | 2023-05-30 | Nanjing Chervon Industry Co., Ltd. | Mower blade assembly |
| US11937545B2 (en) | 2018-09-27 | 2024-03-26 | Nanjing Chervon Industry Co., Ltd. | Blade assembly for a lawn mower |
| USD995567S1 (en) | 2018-09-27 | 2023-08-15 | Nanjing Chervon Industry Co., Ltd. | Mower blade assembly |
| USD995568S1 (en) | 2018-09-27 | 2023-08-15 | Nanjing Chervon Industry Co., Ltd. | Mower blade assembly |
| USD996470S1 (en) | 2018-09-27 | 2023-08-22 | Nanjing Chervon Industry Co., Ltd. | Mower blade assembly |
| WO2020063609A1 (en) * | 2018-09-27 | 2020-04-02 | 南京德朔实业有限公司 | Lawnmower |
| US11917939B2 (en) | 2018-09-27 | 2024-03-05 | Nanjing Chervon Industry Co., Ltd. | Blade assembly for a lawn mower |
| USD995569S1 (en) | 2019-04-18 | 2023-08-15 | Nanjing Chervon Industry Co., Ltd. | Mower blade assembly |
| CN114929008A (en) * | 2019-11-25 | 2022-08-19 | 森拉天时卢森堡有限公司 | Cutting element, use thereof and mobile cutting device with same |
| CN111631036A (en) * | 2020-06-11 | 2020-09-08 | 嘉兴卉景园林有限公司 | Garden branch trimmer capable of being sterilized synchronously |
| CN112166860A (en) * | 2020-09-25 | 2021-01-05 | 东北林业大学 | Forestry is cut irritates with class planet type serrated knife |
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Application publication date: 20130327 |