A kind of saw chain of felling saw
Technical field
The invention belongs to electronic felling saw field, and in particular to the saw vessel used to hold grain at the imperial sacrifice structure of felling saw.
Background technology
The saw vessel used to hold grain at the imperial sacrifice of existing common felling saw includes connection chain link, left cutter link and right cutter link, left cutting chain
Section and right cutter link are set in turn, and a connection chain link is equipped between adjacent left cutter link and right cutter link,
By driving piece to coordinate rivet interlacement between adjacent link;General cutter link includes two connection sheets, one of them
Substantially l-shaped cutting blade is connected with connection sheet, and the blade end of cutting blade front end slightly forward extends out, in knife
The moment that sword contacts with material to be cut body phase, cutting blade is by the active force reverse with cut direction, and the one of the active force
Individual component can to rivet produce radial direction shearing force, another component can to rivet produce axial direction pulling force, make manufactured head with
Pressure is produced between connection sheet, manufactured head is produced loosening with connection sheet contact portion, after rivet loosens with connection sheet, due to
The position of connection sheet produces different degrees of movement, and the anti-shear ability of rivet also declines therewith, and rivet is especially by cutter
Piece side stress is larger, easily produces strain and is even broken, larger potential safety hazard be present.
The content of the invention
The technical problems to be solved by the invention are:In view of the deficienciess of the prior art, a kind of clever structure is provided, by force
Degree is high, the saw vessel used to hold grain at the imperial sacrifice structure for the felling saw that cutting speed is fast and service life is relatively long.
To realize the purpose of the present invention, it is achieved using following technical scheme:A kind of saw chain of felling saw, includes logical
The connection chain link and cutter link that piece of overdriving is connected, pass through respectively between the driving piece and connection chain link, cutter link
Rivet is rotatablely connected, and the cutter link includes the left cutter link set in turn and right cutter link;
Described connection chain link is by two connection sheets and is integrally attached between two connection sheets and is located at length direction
The connecting portion in centre position is formed, and connection chain link is by a complete sheet metal punch forming;Opened up in one connection sheet
There are two huge linkage holes, the position of corresponding two huge linkage holes offers two small connecting holes in another described connection sheet, small
The aperture of connecting hole is less than the aperture of huge linkage hole;Between the inside and outside wall of the huge linkage hole, small connecting hole and connection sheet
Form chamfering;Periphery in the outside wall surface of the connection sheet for having opened up small connecting hole positioned at small connecting hole forms recessed circle a;
Each connection sheet forms two symmetrically arranged branch fasteners different from the side of connecting portion, and the outer end of branch fastener is curved;
The hardness of the connection sheet is HRC45-HRC50, the connecting portion, and connecting portion and connection sheet connecting part
Hardness is HRC40-HRC45;
A lasso, two ends of lasso are connected with the connection chain link between relative huge linkage hole and small connecting hole
The clamping flange collar being engaged with the chamfering position on huge linkage hole, small connecting hole, the periphery of lasso and drive are formed on face respectively
Connecting hole on moving plate is rotatably assorted connection, has a positioning step portion among the inner circumferential of lasso, and lasso inner circumferential is positioned at positioning
The both sides of stage portion are two different socket parts of aperture;
The hardness of the lasso periphery is HRC50-HRC55, and the hardness of lasso inner circumferential is HRC40-HRC45;
The left cutter link includes the main connection sheet on the left of cutting direction, the secondary connection on the right side of cutting direction
Piece, it is integrally attached to, between main connection sheet and secondary connection sheet and positioned at the connection part in length direction centre position, be integrally attached to
Cutting tip away from connection part side in main connection sheet, and be integrally attached in main connection sheet and be located in front of cutting tip
Spacing head, a breach is left between spacing head and cutting tip;The left cutter link is rushed by a complete sheet metal
It is molded;Two huge linkage holes are offered in the main connection sheet, the position of two huge linkage holes is corresponded in the secondary connection sheet
Two small connecting holes are offered, the aperture of small connecting hole is less than the aperture of huge linkage hole;The huge linkage hole, small connecting hole and company
Chamfering is formed between the inside and outside wall of contact pin;Periphery in the outside wall surface of the secondary connection sheet positioned at small connecting hole forms
Recessed circle b;Also described lasso is connected with the left cutter link between relative huge linkage hole, small connecting hole;
Described cutting tip is in integrally front wide and rear narrow taper cambered surface, and cutting tip and main connection sheet connected component are close
One end outward bending of spacing head, the front end of cutting tip form close to the first blade of main connection sheet side and connected close to secondary
Second blade of contact pin side, the first blade and the second blade joint form the point of a knife extended to cutting direction;The cutting
Machine-shaping has to form first blade, the first of the second blade respectively with cutting tip internal face crossover position for blade front end
Grinding surface and the second grinding surface;
The ratio between radius of periphery residing for first grinding surface and the second grinding surface is 4 ﹕ 5-5 ﹕ 6, the first grinding surface institute
The radius for locating periphery is 8-12mm;The axis p of circumference and left cut residing for first grinding surface are cut between zip length direction
The angle a of 41-43 degree is formed, is formed residing for first grinding surface between the axis of circumference and left cutter link width
The angle c of 46-48 degree;The axis q of circumference and left cut form 47-49 between cutting zip length direction residing for second grinding surface
The angle b of degree, 126-128 degree is formed residing for second grinding surface between the axis of circumference and left cutter link width
Angle d;
The point of a knife cut in left cut it is relative with spacing head on zip length direction, and among point of a knife and spacing head thickness direction
The distance between point t is 0-0.1mm;The distance between cutting tip front end outside wall surface and main connection sheet outer face s are 1-
3mm;
The main connection sheet, the hardness of secondary connection sheet are HRC45-HRC50, the connection part, and connection part and main company
Contact pin, the hardness of secondary connection sheet connecting part are HRC40-HRC45, and cutting tip front portion hardness is HRC55-HRC60, institute
It is HRC50-HRC55 to state cutting tip rear portion hardness;
Cutting tip, spacing head, huge linkage hole and the small connecting hole of the right cutter link cut cutting for chain link with respect to left cut
Paring blade, spacing head, huge linkage hole and small connecting hole specular are set, and the mirror image face of the specular is and main connection
Piece, secondary connection sheet be parallel and equidistant plane;
The rivet is made up of the manufactured head of integrally connected successively, thick bar portion, thin rod part and riveting end, thick bar portion and thin bar
Portion's connecting position forms a positioning shoulder;Rivet penetrates from huge linkage hole, is passed from small connecting hole, the positioning shoulder and lasso
Positioning step portion is engaged, and thick bar portion, thin rod part are interference fitted with two socket parts of lasso inner circumferential connect respectively;The riveting
After end forms riveting head by pendulum stone roller riveting, the inwall of riveting head corresponds to recessed circle a, recessed circle b position formation and recessed circle a, recessed circle b
The riveting ring being engaged;
The periphery hardness that the rivet is located at thin rod part and riveting end junction is HRC28-HRC30, the riveting end its
The hardness of its part is HRC35-HRC37, and the hardness of the rivet other parts is HRC58-HRC60;
The HRC is the C scale of Rockwell hardness scale.
The present invention provides the saw chain of another felling saw, includes by driving the connection chain link and cutting chain that piece is connected
Section, drive and be rotatablely connected respectively by rivet between piece and connection chain link, cutter link, the cutter link includes setting in turn
Left cutter link and right cutter link;
The left cutter link includes the main connection sheet on the left of cutting direction, the secondary connection on the right side of cutting direction
Piece, it is integrally attached to, between main connection sheet and secondary connection sheet and positioned at the connection part in length direction centre position, be integrally attached to
Cutting tip away from connection part side in main connection sheet, and be integrally attached in main connection sheet and be located in front of cutting tip
Spacing head, a breach is left between spacing head and cutting tip;The left cutter link is rushed by a complete sheet metal
It is molded;Two huge linkage holes are offered in the main connection sheet, the position of two huge linkage holes is corresponded in the secondary connection sheet
Two small connecting holes are offered, the aperture of small connecting hole is less than the aperture of huge linkage hole;
Described cutting tip is in integrally front wide and rear narrow taper cambered surface, and cutting tip and main connection sheet connected component are close
One end outward bending of spacing head, the front end of cutting tip form the first blade and the second blade, the first blade and the second knife
Sword joint forms the point of a knife extended to cutting direction;Distinguish with cutting tip internal face crossover position the cutting tip front end
Machine-shaping has to form the first grinding surface and the second grinding surface of first blade, the second blade;
Cutting tip, spacing head, huge linkage hole and the small connecting hole of the right cutter link cut cutting for chain link with respect to left cut
Paring blade, spacing head, huge linkage hole and small connecting hole specular are set, and the mirror image face of the specular is and main connection
Piece, secondary connection sheet be parallel and equidistant plane;
Described connection chain link is by two connection sheets and is integrally attached between two connection sheets and is located at length direction
The connecting portion in centre position is formed, and two huge linkage holes are offered in a connection sheet, right in another described connection sheet
The position of two huge linkage holes is answered to offer two small connecting holes, the aperture of small connecting hole is less than the aperture of huge linkage hole;It is described
Open up the periphery in the outside wall surface of the connection sheet of small connecting hole positioned at small connecting hole and form recessed circle a;Each connection sheet
Side different from connecting portion is the arc of evagination, and the outer end of arc forms jagged cutting.
As preferred:A lasso is connected with the connection chain link between relative huge linkage hole and small connecting hole, is covered
The periphery of circle is rotatably assorted with the connecting hole on driving piece and is connected, and has a positioning step portion, lasso among the inner circumferential of lasso
The both sides that inner circumferential is located at positioning step portion are two different socket parts of aperture.
As preferred:The rivet is made up of the manufactured head of integrally connected successively, thick bar portion, thin rod part and riveting end, slightly
Bar portion forms a positioning shoulder with thin rod part connecting position, and the positioning shoulder is engaged with the positioning step portion of lasso, thick bar portion,
Thin rod part is interference fitted with two socket parts of lasso inner circumferential connects respectively.
Compared with prior art, the beneficial effects of the invention are as follows:The rivet is made up of different two sections of thickness, with set
The integrative-structure of interference fit is formed after circle connection, and two connections are made by connecting portion connection between the connection sheet of connection chain link
Relatively-stationary state is between piece, is made between the main connection sheet and secondary connection sheet of cutter link again by connection part connection
Be in relatively-stationary state between main connection sheet and secondary connection sheet, such lasso insert when mounted driving piece connecting hole it
It is caught in again between the huge linkage hole between two connection sheets and small connecting hole afterwards, then penetrates rivet again and fix, assembling is accurate to
Position;After at riveting end, riveting is shaped to riveting head, riveting ring and recessed circle that riveting head inwall is formed are interlocked, and improve rivet
Soundness after connection;Other thin rod part other positions relative with the hardness of the periphery of riveting end crossover position are minimum, this
After the shaping of riveting end riveting, the minimum region of the hardness is squeezed to form higher density sample, and with small connecting hole shape
Into closely pretightning force is produced with merging, loosening is not likely to produce;And one section of thick bar portion one side has larger diameter and higher
Hardness, anti-shear performance is excellent, and manufactured head is advance comprising and to have higher hardness, in main connection sheet by the axle along rivet
It is not easy to deform to manufactured head position during component;The firmness and security performance of rivet interlacement are ensure that on the whole.The cutting
The cutting tip of chain link employs the structure of two blades, and the position of the point of a knife and spacing head of two blade connecting positions formation
Relatively, point of a knife contacts with cut object at first when such cutter link is cut, to two blades completely and material to be cut
During body contacts, the pressure between blade and cut object remains larger, and cutting efficiency is high, and blade and cutting
Blade touches with cutting object join on skew in object contact process, and blade can be kept sharp the long period by oblique friction
State.In addition, the setting angle of two blades is suitable so that stress of the cutter link in cutting is axially hung down with rivet substantially
Directly, reduce saw vessel used to hold grain at the imperial sacrifice by radial component caused radial wobble, integrally extend saw vessel used to hold grain at the imperial sacrifice safe operating life.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is connection chain link and the assembling structure schematic diagram of rivet,
Fig. 3 is the cross section structure diagram of connection chain link and rivet confined state.
Fig. 4 is the structural representation of connection chain link.
Fig. 5 is the structural representation before the non-riveting of rivet.
Fig. 6 is the structural representation after rivet riveting.
Fig. 7, Fig. 8 are the structural representations of lasso.
Fig. 9, Figure 10 are the structural representations of left cutter link.
Figure 11 is the side structure schematic diagram of left cutter link.
Figure 12 is the structural representation of left cutter link front end.
Figure 13 is another structural representation of the present invention.
Figure 14, Figure 15 are another structural representations of connection chain link.
, connection chain link;11st, connection sheet;12nd, connecting portion;13rd, branch fastener;14th, recessed circle a;15th, cutting;2nd, piece is driven;3、
Left cutter link;31st, secondary connection sheet;311st, recessed circle b;32nd, main connection sheet;33rd, spacing head;34th, cutting tip;341st, the first knife
Sword;3411st, the first grinding surface;342nd, the second blade;3421st, the second grinding surface;343rd, point of a knife;35th, connection part;4th, right cutting chain
Section;5th, rivet;51st, manufactured head;52nd, thick bar portion;53rd, thin rod part;54th, shoulder is positioned;55th, riveting end;550th, riveting head;551st, riveting
Pressure ring;56th, lasso;561st, positioning step portion;562nd, clamping flange collar;61st, small connecting hole;62nd, huge linkage hole.
Embodiment
The embodiment of the present invention is made a detailed explanation below according to accompanying drawing.
Embodiment 1
According to Fig. 1 to Figure 12, the present embodiment is a kind of saw chain of felling saw, is included by driving piece 2 to be connected
Connection chain link 1 and cutter link, it is described driving piece and connection chain link, cutter link between be rotatablely connected respectively by rivet,
The cutter link includes the left cutter link 3 and right cutter link 4 set in turn.
Described connection chain link is by two connection sheets 11 and is integrally attached between two connection sheets and is located at length side
Formed to the connecting portion 12 in centre position, connection chain link is by a complete sheet metal punch forming;In one connection sheet
Two huge linkage holes 62 are offered, the position of corresponding two huge linkage holes offers two small connections in another described connection sheet
Hole 61, the aperture of small connecting hole are less than the aperture of huge linkage hole;The inside and outside wall of the huge linkage hole, small connecting hole and connection sheet
Between form chamfering;Periphery in the outside wall surface of the connection sheet for having opened up small connecting hole positioned at small connecting hole forms
Recessed circle a14;Each connection sheet forms two symmetrically arranged branch fasteners 13 different from the side of connecting portion, branch fastener it is outer
Hold curved.
The hardness of the connection sheet is HRC46, the connecting portion, and connecting portion and the hardness of connection sheet connecting part is
HRC42.Connecting portion position is slightly soft to enable following lassos to fit more easily into.
It is connected with a lasso 56 in the connection chain link between relative huge linkage hole and small connecting hole, two of lasso
The clamping flange collar 562 being engaged with the chamfering position on huge linkage hole, small connecting hole, the periphery of lasso are formed on end face respectively
It is rotatably assorted and is connected with the connecting hole on driving piece, there is a positioning step portion 561, lasso inner circumferential position among the inner circumferential of lasso
In the both sides in positioning step portion be different two socket parts in aperture.
The hardness of the lasso periphery is HRC55, and the hardness of lasso inner circumferential is HRC40.Lasso periphery is with driving on piece
Connecting hole is rotatablely connected, and for hardness compared with high wear resistance, lasso inner circumferential hardness is slightly lower, is fitted close with rivet and forms certain radial direction
Pretightning force.
The left cutter link includes the main connection sheet 32 on the left of cutting direction, and the pair on the right side of cutting direction is even
Contact pin 31, it is integrally attached between main connection sheet and secondary connection sheet and positioned at the connection part 35 in length direction centre position, one
The cutting tip 34 away from connection part side in main connection sheet is connected to, and is integrally attached in main connection sheet and is located at cutting
Spacing first 33 in front of blade, a breach is left between spacing head and cutting tip;The left cutter link is complete by one
Sheet metal punch forming;Two huge linkage holes 62 are offered in the main connection sheet, it is corresponding two big in the secondary connection sheet
The position of connecting hole offers two small connecting hole 61, and the aperture of small connecting hole is less than the aperture of huge linkage hole;The big connection
Chamfering is formed between the inside and outside wall in hole, small connecting hole and connection sheet;It is located at little Lian in the outside wall surface of the secondary connection sheet
The periphery for connecing hole forms recessed circle b311;Also it is connected between relative huge linkage hole, small connecting hole in the left cutter link
Described lasso.
Described cutting tip is in integrally front wide and rear narrow taper cambered surface, and cutting tip and main connection sheet connected component are close
One end outward bending of spacing head, the front end of cutting tip are formed close to the first blade 341 of main connection sheet side and close
Second blade 342 of secondary connection sheet side, the first blade and the second blade joint form the point of a knife extended to cutting direction
343;Machine-shaping to form first blade, the respectively for the cutting tip front end and cutting tip internal face crossover position
The first grinding surface 3411 and the second grinding surface 3421 of two blades.
The ratio between radius of periphery residing for first grinding surface and the second grinding surface is 4 ﹕ 5, is justified residing for the first grinding surface
The radius of side face is 10mm;The axis p of circumference and left cut form 42 between cutting zip length direction residing for first grinding surface
The angle a of degree, 47 degree of angle is formed residing for first grinding surface between the axis of circumference and left cutter link width
c;The axis q of circumference and left cut residing for second grinding surface are cut and 48 degree of angle b are formed between zip length direction, and described the
127 degree of angle d is formed between the axis of circumference residing for two grinding surfaces and left cutter link width.
The point of a knife cut in left cut it is relative with spacing head on zip length direction, and among point of a knife and spacing head thickness direction
The distance between point t is 0.05mm;The distance between cutting tip front end outside wall surface and main connection sheet outer face s are 2mm;
First blade extends to cutting tip front Middle face position from cutting tip top surface medium position, due to so being cut
The wood chip cut off can be shredded again by the part that the first blade is located in the middle part of side, will not be stuck in gap position.Two blade phases
Position is handed over to form a fin, point of a knife is located at the top of fin, and the tail end of fin extends to main connection sheet side, so by the
The wood chip that two blades are cut can be pushed open by fin toward secondary connection sheet side, will not be snapped into breach side and be caused saw vessel used to hold grain at the imperial sacrifice can not be normal
Work.
The main connection sheet, the hardness of secondary connection sheet are HRC47, the connection part, and connection part and main connection sheet, pair
The hardness of connection sheet connecting part is HRC43, and cutting tip front portion hardness is HRC60, cutting tip rear portion hardness
For HRC52.
Cutting tip, spacing head, huge linkage hole and the small connecting hole of the right cutter link cut cutting for chain link with respect to left cut
Paring blade, spacing head, huge linkage hole and small connecting hole specular are set, and the mirror image face of the specular is and main connection
Piece, secondary connection sheet be parallel and equidistant plane.The main connection sheet, the saying of secondary connection sheet are only easy for describing part
Position relationship, without the major-minor on essential meaning point.
The rivet is made up of the manufactured head 51 of integrally connected successively, thick bar portion 52, thin rod part 53 and riveting end 55, thick bar
Portion forms a positioning shoulder 54 with thin rod part connecting position;Rivet penetrates from huge linkage hole, is passed from small connecting hole, the positioning
Shoulder is engaged with the positioning step portion of lasso, and thick bar portion, thin rod part are interference fitted with two socket parts of lasso inner circumferential respectively to be connected
Connect;After the riveting end forms riveting first 550 by pendulum stone roller riveting, the inwall of riveting head corresponds to recessed circle a, recessed circle b position shape
Into the riveting ring 551 being engaged with recessed circle a, recessed circle b.
The periphery hardness that the rivet is located at thin rod part and riveting end junction is HRC29, riveting end other parts
Hardness be HRC36, the hardness of the rivet other parts is HRC59.Thin rod part is hard with the periphery of riveting end crossover position
The relative other positions of degree are minimum, so after the shaping of riveting end riveting, the minimum region of the hardness be squeezed to be formed compared with
High density, and formed closely with small connecting hole with generation pretightning force is merged, it is not likely to produce loosening.
HRC described in text is the C scale of Rockwell hardness scale.
Embodiment 2
With reference to shown in Fig. 5 to Figure 15, the present embodiment is a kind of saw chain of felling saw, is included by driving piece 2 to be connected
Connection chain link 1 and cutter link, it is described driving piece and connection chain link, cutter link between be rotatablely connected respectively by rivet,
The cutter link includes the left cutter link 3 and right cutter link 4 set in turn.
Described connection chain link is by two connection sheets 11 and is integrally attached between two connection sheets and is located at length side
Formed to the connecting portion 12 in centre position, connection chain link is by a complete sheet metal punch forming;In one connection sheet
Two huge linkage holes 62 are offered, the position of corresponding two huge linkage holes offers two small connections in another described connection sheet
Hole 61, the aperture of small connecting hole are less than the aperture of huge linkage hole;The inside and outside wall of the huge linkage hole, small connecting hole and connection sheet
Between form chamfering;Periphery in the outside wall surface of the connection sheet for having opened up small connecting hole positioned at small connecting hole forms
Recessed circle a14;For each connection sheet different from the arc that the side of connecting portion is evagination, the outer end of arc forms zigzag
Cutting 15.The one side of cutting 15 plays position-limiting action, effectively prevents from sawing vessel used to hold grain at the imperial sacrifice bounce-back, another aspect cutting is by cut material
The cutting position of material marks cut along cutting direction, although resistance increases, reduces the impulsive force that cutter link is subject to, and profit
In the cutting of blade, the cutting of the timber larger to hardness is particularly advantageous for.In addition, the cutting 15 is located at arc center section
Land it is narrower, beneficial to timber is scratched, the land that the cutting 15 is located at arc two end portions is wider, avoids land from being caught in wood
Material depth is excessive to cause stuck situation.
The hardness of the connection sheet is HRC46, the connecting portion, and connecting portion and the hardness of connection sheet connecting part is
HRC42.Connecting portion position is slightly soft to enable following lassos to fit more easily into.
It is connected with a lasso 56 in the connection chain link between relative huge linkage hole and small connecting hole, two of lasso
The clamping flange collar 562 being engaged with the chamfering position on huge linkage hole, small connecting hole, the periphery of lasso are formed on end face respectively
It is rotatably assorted and is connected with the connecting hole on driving piece, there is a positioning step portion 561, lasso inner circumferential position among the inner circumferential of lasso
In the both sides in positioning step portion be different two socket parts in aperture.
The hardness of the lasso periphery is HRC55, and the hardness of lasso inner circumferential is HRC40.Lasso periphery is with driving on piece
Connecting hole is rotatablely connected, and for hardness compared with high wear resistance, lasso inner circumferential hardness is slightly lower, is fitted close with rivet and forms certain radial direction
Pretightning force.
The left cutter link includes the main connection sheet 32 on the left of cutting direction, and the pair on the right side of cutting direction is even
Contact pin 31, it is integrally attached between main connection sheet and secondary connection sheet and positioned at the connection part 35 in length direction centre position, one
The cutting tip 34 away from connection part side in main connection sheet is connected to, and is integrally attached in main connection sheet and is located at cutting
Spacing first 33 in front of blade, a breach is left between spacing head and cutting tip;The left cutter link is complete by one
Sheet metal punch forming;Two huge linkage holes 62 are offered in the main connection sheet, it is corresponding two big in the secondary connection sheet
The position of connecting hole offers two small connecting hole 61, and the aperture of small connecting hole is less than the aperture of huge linkage hole;The big connection
Chamfering is formed between the inside and outside wall in hole, small connecting hole and connection sheet;It is located at little Lian in the outside wall surface of the secondary connection sheet
The periphery for connecing hole forms recessed circle b311;Also it is connected between relative huge linkage hole, small connecting hole in the left cutter link
Described lasso.
Described cutting tip is in integrally front wide and rear narrow taper cambered surface, and cutting tip and main connection sheet connected component are close
One end outward bending of spacing head, the front end of cutting tip are formed close to the first blade 341 of main connection sheet side and close
Second blade 342 of secondary connection sheet side, the first blade and the second blade joint form the point of a knife extended to cutting direction
343;Machine-shaping to form first blade, the respectively for the cutting tip front end and cutting tip internal face crossover position
The first grinding surface 3411 and the second grinding surface 3421 of two blades.
The ratio between radius of periphery residing for first grinding surface and the second grinding surface is 5 ﹕ 6, is justified residing for the first grinding surface
The radius of side face is 8.5mm;The axis p of circumference and left cut form 42 between cutting zip length direction residing for first grinding surface
The angle a of degree, 47 degree of angle is formed residing for first grinding surface between the axis of circumference and left cutter link width
c;The axis q of circumference and left cut residing for second grinding surface are cut and 48 degree of angle b are formed between zip length direction, and described the
127 degree of angle d is formed between the axis of circumference residing for two grinding surfaces and left cutter link width.
The point of a knife cut in left cut it is relative with spacing head on zip length direction, and among point of a knife and spacing head thickness direction
Point is completely corresponding;The distance between cutting tip front end outside wall surface and main connection sheet outer face s are 2.5mm;Described first
Blade extends to cutting tip front Middle face position from cutting tip top surface medium position, due to the wood under being so cut
Bits can be shredded again by the part that the first blade is located in the middle part of side, will not be stuck in gap position.Two blade intersection location shapes
Into a fin, point of a knife is located at the top of fin, and the tail end of fin extends to main connection sheet side, is so cut by the second blade
Under wood chip can be pushed open by fin toward secondary connection sheet side, breach side will not be snapped into and cause saw vessel used to hold grain at the imperial sacrifice cisco unity malfunction.
The main connection sheet, the hardness of secondary connection sheet are HRC48, the connection part, and connection part and main connection sheet, pair
The hardness of connection sheet connecting part is HRC45, and cutting tip front portion hardness is HRC60, cutting tip rear portion hardness
For HRC55.
Cutting tip, spacing head, huge linkage hole and the small connecting hole of the right cutter link cut cutting for chain link with respect to left cut
Paring blade, spacing head, huge linkage hole and small connecting hole specular are set, and the mirror image face of the specular is and main connection
Piece, secondary connection sheet be parallel and equidistant plane.The main connection sheet, the saying of secondary connection sheet are only easy for describing part
Position relationship, without the major-minor on essential meaning point.
The rivet is made up of the manufactured head 51 of integrally connected successively, thick bar portion 52, thin rod part 53 and riveting end 55, thick bar
Portion forms a positioning shoulder 54 with thin rod part connecting position;Rivet penetrates from huge linkage hole, is passed from small connecting hole, the positioning
Shoulder is engaged with the positioning step portion of lasso, and thick bar portion, thin rod part are interference fitted with two socket parts of lasso inner circumferential respectively to be connected
Connect;After the riveting end forms riveting first 550 by pendulum stone roller riveting, the inwall of riveting head corresponds to recessed circle a, recessed circle b position shape
Into the riveting ring 551 being engaged with recessed circle a, recessed circle b.
The periphery hardness that the rivet is located at thin rod part and riveting end junction is HRC29, riveting end other parts
Hardness be HRC36, the hardness of the rivet other parts is HRC59.Thin rod part is hard with the periphery of riveting end crossover position
The relative other positions of degree are minimum, so after the shaping of riveting end riveting, the minimum region of the hardness be squeezed to be formed compared with
High density, and formed closely with small connecting hole with generation pretightning force is merged, it is not likely to produce loosening.
Above-described embodiment is only the preferable embodiment of the present invention, and in addition, the present invention can also have other realizations
Mode.It should be noted that on the premise of without departing from present inventive concept, any conspicuously improved and modification all should fall
Enter within protection scope of the present invention.