CN107755718B - The design method of involute blade - Google Patents

The design method of involute blade Download PDF

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Publication number
CN107755718B
CN107755718B CN201610681868.1A CN201610681868A CN107755718B CN 107755718 B CN107755718 B CN 107755718B CN 201610681868 A CN201610681868 A CN 201610681868A CN 107755718 B CN107755718 B CN 107755718B
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Prior art keywords
knife
edge
bottle cap
cutterhead
sectional area
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CN107755718A (en
Inventor
王炜
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Tianjin Rui Pu Precision Die Co Ltd
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Tianjin Rui Pu Precision Die Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B27/00Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006Cutting members therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/10Making cuts of other than simple rectilinear form
    • GPHYSICS
    • G16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16ZINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR
    • G16Z99/00Subject matter not provided for in other main groups of this subclass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006Cutting members therefor
    • B26D2001/006Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Closures For Containers (AREA)

Abstract

A kind of design method of involute blade, the blade includes cutterhead, and the upper end of the cutterhead is equipped with the knife edge, the left and right ends of the cutterhead are equipped with guide pillar hole, the middle part of the cutterhead is equipped with fixation hole, and the knife edge is equipped with the edge of a knife, and the two sides of the edge of a knife are arcuate structure.The blade type of the involute knife group includes A type knife, Type B knife, c-type knife, D type knife.The beneficial effect is that: the matching of existing involute cutting machine can be realized by more tool changing group, can be produced in batches, without being individually opened to every kind of cutter, reduce production cost.By the improvement of knife edge structure, the abrasion to the edge of a knife is reduced, guarantees the sharp of the edge of a knife, prolongs the service life.

Description

The design method of involute blade
Technical field
The present invention relates to special processing knife group field, especially a kind of design method of involute blade.
Background technique
Bottle cap involute is to cut to be formed by the special tool with multiple edges of a knife.Existing cutter it is various informative, The involute cutting machine structure that this is primarily due to for fixing with opening and closing cutter is different, cannot same batch production and sale, Production is individually opened to every kind of blade, and will increase production cost.
In addition, the cutting tool of bottle cap involute as other cutters, belongs to consumptive material, and involute cutting tool It is easier to consume than other cutters, this, which is primarily due to the place that cutter is easiest to consume, is the end of cutter, and gradually opens For line cutter due to the presence of the edge of a knife, the top inlet of each edge of a knife is easy to happen abrasion.The level of the edge of a knife of existing cutter is cut Face is rectangular configuration, and the top inlet of the edge of a knife is right-angle structure, and the left and right sides of the edge of a knife is linear structure, is easy to happen abrasion, Blade becoming dull after abrasion can not achieve the cutting of involute, can only replace, service life is short.
In production process, bottle cap pulling force as needed is needed, the area of section needed after bottle cap cutting is calculated, To calculate the parameter of knife-edge part, it is driven the notch of cutter for rectangular configuration, area and the very good calculating of edge of a knife parameter, still Existing manufacturer will not calculate edge of a knife parameter, but rule of thumb design cutter, after cutting bottle cap by cutter, bottle cap Pulling force measures and (by measuring bottle cap torsion, measures value of thrust), is adjusted according to measured value, then to edge of a knife parameter, It tests repeatedly, obtains the design parameter of the edge of a knife, low efficiency.
If designed using involute, the calculating of edge of a knife parameter is extremely complex, can not be completed by way of testing repeatedly Cutter production because conventional tool only has the facewidth and deep two parameters of diameter, and when the one of parameter of change, will not influence another One parameter, but using any one parameter of the edge of a knife change of involute design, it can all cause the variation of other parameters.
Summary of the invention
The purpose of the present invention is to solve the above problems, devise a kind of design method of involute blade.Specifically set Meter scheme are as follows:
A kind of involute knife group,
The blade includes cutterhead, and the upper end of the cutterhead is equipped with the knife edge, and the left and right ends of the cutterhead are equipped with guide pillar hole, The middle part of the cutterhead is equipped with fixation hole, and the knife edge is equipped with the edge of a knife, and the two sides of the edge of a knife are arcuate structure.
The blade type of the involute knife group includes A type knife, Type B knife, c-type knife, D type knife.
In the A type knife, the knife edge is the arcuate structure to lower recess, and the cutterhead is rectangular configuration, the knife edge Lead angle is connect between cutterhead, and the quantity of the fixation hole is multiple, middle line of the fixation hole along the cutterhead rectangular configuration Symmetrically, the quantity of the edge of a knife is multiple, arcuate structure curved array distribution of the multiple edge of a knife along the knife edge.
In the Type B knife, the knife edge is the arcuate structure to lower recess, and the cutterhead is rectangular configuration, the knife edge Lead angle is connect between cutterhead, and the quantity of the guide pillar hole is multiple, middle line of the guide pillar hole along the cutterhead rectangular configuration Symmetrically, the fixed hole position is in the middle part of the cutterhead, the quantity of the edge of a knife be it is multiple, the multiple edge of a knife is along the knife edge The left and right sides of the curved array distribution of arcuate structure, the cutterhead is equipped with fixing port.
In the c-type knife, the knife edge, cutterhead are the arcuate structure to raise upward, the left and right sides of the knife edge with The arcuate structure of the cutterhead is orthogonal, and the guide pillar hole is located at the left and right sides of the cutterhead, and the quantity of the edge of a knife is It is multiple, arcuate structure curved array distribution of the multiple edge of a knife along the knife edge, the inside of the arcuate structure of the cutterhead Equipped with groove.
In the D type knife, the knife edge is the arcuate structure to raise upward, the left and right sides of the knife edge and the cutterhead Arcuate structure it is orthogonal, the guide pillar hole is located at the left and right sides of the cutterhead, the quantity of the edge of a knife be it is multiple, it is described For multiple edges of a knife along the curved array distribution of arcuate structure of the knife edge, the top of the cutterhead is the arc knot to raise upward The bottom end of structure, the cutterhead is equipped with rectangle abaculus.
The top inlet bore of the edge of a knife 5 is 0.4-2mm,
The bottom end bore of the edge of a knife 5 is 0.2-1.5mm,
The mouth internal diameter depth of the edge of a knife 5 is 0.6-2.5mm,
The base circle diameter (BCD) of 5 left and right sides arcuate structure of the edge of a knife is 10-60mm,
The pressure angle of involute of the left and right sides arcuate structure of the edge of a knife 5 is 10 ° -30 °.
Edge of a knife quantity on the knife edge is 6-30.
A kind of calculation method of the edge of a knife parameter of involute cutter, design procedure are as follows:
The bottle cap sectional area of needs is first calculated,
The bottle cap sectional area of bottle cap sectional area and edge of a knife parameter and needs further according to needs is calculated and is embedded in bottle cap The theoretical sectional area value range obtained after the edge of a knife,
According to teachings value, the depth that bottle cap is embedded in the edge of a knife is adjusted, it is made to obtain needs after the edge of a knife Bottle cap sectional area,
The calculation formula of the bottle cap area of section of the needs are as follows:
N*S=9.8Fn/ δ,
FN is demand pulling force,
δ is materials theory tensile strength,
9.8 be constant,
N is edge of a knife quantity;
The bottle cap area peak computational formula are as follows:
S1=B (A1+A2)/2,
Wherein:
B is bottle cap cut portion wall thickness,
A1It is the base square of cutting section approximate trapezoid,
A2It is the water table opening of cutting section approximate trapezoid,
The calculation formula of the bottle cap area valley are as follows:
S2=B (A1+A2)/2-[rL-C(r-h)]
Wherein:
R is the radius of approximate circular arc,
L is the arc length of approximate circular arc:
L=(C2+4h2)r/8h
H is the action of approximate circular arc:
C is the chord length of approximate circular arc:
B is bottle cap cut portion wall thickness,
A3It is the base square of cutting section approximate trapezoid,
A4It is the water table opening of cutting section approximate trapezoid,
A4>=0.3mm,
S3=[rL-C (r-h)]/2
S3For the bow-shaped area of approximate circular arc,
S2< S < S1,
The depth that bottle cap is embedded in the edge of a knife is B '.
The design method for the involute blade that above-mentioned technical proposal through the invention obtains, the beneficial effect is that:
The matching that existing involute cutting machine can be realized by more tool changing group, can produce in batches, not have to every kind Cutter is individually opened, and production cost is reduced.
By the improvement of knife edge structure, the abrasion to the edge of a knife is reduced, guarantees the sharp of the edge of a knife, prolongs the service life.Simultaneously It is desirable according to formula
Detailed description of the invention
Fig. 1 is the structural schematic diagram of A type knife of the present invention;
Fig. 2 is the structural schematic diagram of Type B knife of the present invention;
Fig. 3 is the structural schematic diagram of c-type knife of the present invention;
Fig. 4 is the structural schematic diagram of D type knife of the present invention;
Fig. 5 is the structural schematic diagram of the edge of a knife of the present invention;
Structural schematic diagram when Fig. 6 is D type knife of the present invention work, when bottle cap is rolled along D type knife;
Fig. 7 is the structural schematic diagram of the existing rectangle edge of a knife of the present invention;
Fig. 8 is the structural schematic diagram after existing rectangle edge of a knife use of the present invention;
Fig. 9 is the structural schematic diagram for the edge of a knife parameter that the present invention is obtained using peak computational formula;
Figure 10 is the structural schematic diagram for the edge of a knife parameter that the present invention is obtained using valley calculation formula;In figure, 1, cutterhead;2, The knife edge;3, guide pillar hole;4, fixation hole;5, the edge of a knife;6, fixing port;7, groove;8, abaculus;9, bottle cap;10, right-angle structure;11, it grinds Damage part.
Specific embodiment
The present invention is specifically described with reference to the accompanying drawing.
As shown in Figs 1-4, a kind of involute knife group,
The blade includes cutterhead 1, and the upper end of the cutterhead 1 is equipped with the knife edge 2, and the left and right ends of the cutterhead 1, which are equipped with, leads Post holes 3, the middle part of the cutterhead 1 are equipped with fixation hole 4, and the knife edge 2 is equipped with the edge of a knife 5, and the two sides of the edge of a knife 5 are arc knot Structure.
The blade type of the involute knife group includes A type knife, Type B knife, c-type knife, D type knife.
In the A type knife, the knife edge 2 is the arcuate structure to lower recess, and the cutterhead 1 is rectangular configuration, the knife Lead angle connects between cutting edge of a knife or a sword 2 and cutterhead 1, the quantity of the fixation hole 4 be it is multiple, the fixation hole 4 is along 1 rectangular configuration of cutterhead Middle line it is symmetrical, the quantity of the edge of a knife 5 is multiple, arcuate structure curved array of the multiple edge of a knife 5 along the knife edge 2 Distribution.
In the Type B knife, the knife edge 2 is the arcuate structure to lower recess, and the cutterhead 1 is rectangular configuration, the knife Lead angle connects between cutting edge of a knife or a sword 2 and cutterhead 1, the quantity of the guide pillar hole 3 be it is multiple, the guide pillar hole 3 is along 1 rectangular configuration of cutterhead Middle line it is symmetrical, the fixation hole 4 is located at 1 middle part of the cutterhead, and the quantity of the edge of a knife 5 is multiple, the multiple 5 edge of the edge of a knife The left and right sides of the curved array distribution of arcuate structure of the knife edge 2, the cutterhead 1 is equipped with fixing port 6.
In the c-type knife, the knife edge 2, cutterhead 1 are the arcuate structure to raise upward, the left and right sides of the knife edge 2 Orthogonal with the arcuate structure of the cutterhead 1, the guide pillar hole 3 is located at the left and right sides of the cutterhead 1, the edge of a knife 5 Quantity is multiple, arcuate structure curved array distribution of the multiple edge of a knife 5 along the knife edge 2, the arc knot of the cutterhead 1 The inside of structure is equipped with groove 7.
In the D type knife, the knife edge 2 is the arcuate structure to raise upward, the left and right sides of the knife edge 2 and the knife The arcuate structure of disk 1 is orthogonal, and the guide pillar hole 3 is located at the left and right sides of the cutterhead 1, and the quantity of the edge of a knife 5 is more A, for the multiple edge of a knife 5 along the curved array distribution of arcuate structure of the knife edge 2, the top of the cutterhead 1 is to raise upward Arcuate structure, the bottom end of the cutterhead 1 is equipped with rectangle abaculus 8.
Edge of a knife quantity on the knife edge 2 is 6-30.
As shown in figure 5, the top inlet bore of the edge of a knife 5 is 0.4-2mm,
The bottom end bore of the edge of a knife 5 is 0.2-1.5mm,
The mouth internal diameter depth of the edge of a knife 5 is 0.6-2.5mm,
The base circle diameter (BCD) of 5 left and right sides arcuate structure of the edge of a knife is 10-60mm,
The pressure angle of involute of the left and right sides arcuate structure of the edge of a knife 5 is 10 ° -30 °.
A kind of calculation method of the edge of a knife parameter of involute cutter, design procedure are as follows:
The bottle cap sectional area of needs is first calculated,
The bottle cap sectional area of bottle cap sectional area and edge of a knife parameter and needs further according to needs is calculated and is embedded in bottle cap The theoretical sectional area value range obtained after the edge of a knife,
According to teachings value, the depth that bottle cap is embedded in the edge of a knife is adjusted, it is made to obtain needs after the edge of a knife Bottle cap sectional area.
The calculation formula of the bottle cap area of section of the needs are as follows:
N*S=9.8Fn/ δ,
FN is demand pulling force,
δ is materials theory tensile strength,
9.8 be constant,
N is edge of a knife quantity;
The bottle cap area peak computational formula are as follows:
S1=B (A1+A2)/2,
Wherein:
B is bottle cap cut portion wall thickness,
A1It is the base square of cutting section approximate trapezoid,
A2It is the water table opening of cutting section approximate trapezoid,
The calculation formula of the bottle cap area valley are as follows:
S2=B (A1+A2)/2-[rL-C(r-h)]
Wherein:
R is the radius of approximate circular arc,
L is the arc length of approximate circular arc:
L=(C2+4h2)r/8h
H is the action of approximate circular arc:
C is the chord length of approximate circular arc:
B is bottle cap cut portion wall thickness,
A3It is the base square of cutting section approximate trapezoid,
A4It is the water table opening of cutting section approximate trapezoid,
A4>=0.3mm,
S3=[rL-C (r-h)]/2
S3For the bow-shaped area of approximate circular arc,
S2< S < S1,
The depth that bottle cap is embedded in the edge of a knife is B '.
Embodiment 1
As shown in fig. 6, the edge of the bottle cap 9 is embedded in the knife edge 2 when bottle cap 9 is rolled along the knife edge 2, pass through knife Multiple edges of a knife 5 on cutting edge of a knife or a sword 2 realize the cutting to 9 involute of bottle cap, and the knife edge 2 between two adjacent edges of a knife 5 carries out bottle cap 9 Cutting, the part that the edge of bottle cap 9 is embedded in the edge of a knife 5 is not cut.
Embodiment 2
As shown in fig. 7, the inlet of the edge of a knife 5 in the prior art is right-angle structure 10,10 part of right-angle structure exists When bottle cap 9 prolongs its rolling, directly penetrate in bottle cap 9.
As shown in figure 8, the right-angle structure 10 is the part that most serious is worn in the knife edge 2 after Reusability, it can casting change The wearing part 11 of camber, the wearing part 11 are more than shape and change, and no longer sharp, can not achieve The cutting of bottle cap 9.
Embodiment 3
As shown in figure 5, the two sides of the edge of a knife 5 are arcuate structure, according to the diameter of bottle cap, unscrew when required pulling force Etc. parameters, calculate most suitable 5 parameter of the edge of a knife, guarantee that bottle cap 9 can cut the edge of a knife 5 with most suitable angle, increase cutting area and While cutting efficiency, the abrasion to the edge of a knife 5 is reduced, is prolonged the service life.
After part wears occurs in the edge of a knife 5, since the abrasion condition of the multiple edge of a knife 5 is essentially identical, the bottle cap 9 is embedding Also there is identical variation substantially in the depth for entering the knife edge 2, and the arcuate structure of 5 left and right sides of the edge of a knife still may be implemented to bottle The cutting of lid 9, further prolongs the service life.
Embodiment 4
Fig. 9 is the structural schematic diagram for the edge of a knife parameter that the present invention is obtained using peak computational formula;Figure 10 is that the present invention adopts With valley calculation formula obtain edge of a knife parameter structural schematic diagram, as shown in Figure 9, Figure 10,
Single-point sectional area is calculated so that bottle cap material is PP as an example: δ=30MPa, Fn=0.6kgf, bottle cap are national standard PCO1881 lid, in single-edge (N=1), preset pressure angle is 20 °:
S=9.8*0.8/30=0.2613mm2
S1=B (A1+A2)/2=0.6* (0.61+0.3)/2=0.273mm2
S2=B (A1+A2)/2- [rL-C (r-h)]=0.273-3.45*0.62+0.619 (3.45-0.014)= 0.261mm2
Embodiment 5
It uses in embodiment 4 and blade is made with the edge of a knife parameter that peak computational formula obtains, using the raw material of different batches, Carry out the production cutting experiment of bottle cap:
It uses in embodiment 4 and blade is made with the edge of a knife parameter that valley calculation formula obtains, using the raw material of different batches, Carry out the production cutting experiment of bottle cap:
Number Actual cross-sectional area (mm2) Practical value of thrust (kgf)
1 0.258 0.60
2 0.259 0.60
3 0.260 0.60
4 0.257 0.59
5 0.261 0.60
6 0.260 0.60
7 0.261 0.60
Experiments have shown that:
After reminding calculating and approximate arc to calculate the edge of a knife parameter obtained, practical cutting area is slightly less than theoretical value;
The edge of a knife parameter obtained is calculated closer to theoretical value using approximate arc, and error is smaller;
Using the knife group for the edge of a knife supplemental characteristic production that this calculation method obtains, can obtain in actual production expected Value of thrust.
Calculation method of the present invention describes the functional relation between edge of a knife parameter, can be by demand when production Variable becomes arbitrarily quantitative in the reasonable scope, such as demand pulling force area S1I.e. for according to fixed raw material material and fixed The set value that national standard demand pulling force obtains, and the wall thickness B of bottle cap is also the definite value determined according to bottle cap parameter, then according to definite value And calculation formula, that is, it can determine that the value function of variable, finally determine edge of a knife parameter.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art The principle of the present invention is embodied to some variations that some of them part may be made, belongs to the scope of protection of the present invention it It is interior.

Claims (1)

1. a kind of design method of involute blade, it is characterised in that:
The blade includes cutterhead (1), and the upper end of the cutterhead (1) is equipped with the knife edge (2), and the left and right ends of the cutterhead (1) are set Have guide pillar hole (3), the middle part of the cutterhead (1) is equipped with fixation hole (4), and the knife edge (2) is equipped with the edge of a knife (5), the edge of a knife (5) two sides are arcuate structure,
Design procedure are as follows:
The bottle cap sectional area of needs is first calculated,
The bottle cap sectional area of bottle cap sectional area and edge of a knife parameter and needs further according to needs calculates and is embedded in the edge of a knife in bottle cap The theoretical sectional area value range obtained afterwards,
According to teachings value, the depth that bottle cap is embedded in the edge of a knife is adjusted, makes it in the bottle cap for obtaining needs after the edge of a knife Sectional area,
The calculation formula of the bottle cap area of section of the needs are as follows:
N*S=9.8FN/ δ,
FN is demand pulling force,
δ is materials theory tensile strength,
9.8 be constant,
N is edge of a knife quantity;
The bottle cap area peak computational formula are as follows:
S1=B (A1+A2)/2,
Wherein:
B is bottle cap cut portion wall thickness,
A1It is the base square of cutting section approximate trapezoid,
A2It is the water table opening of cutting section approximate trapezoid,
The calculation formula of the bottle cap area valley are as follows:
S2=B (A1+A2)/2-[rL-C(r-h)]
Wherein:
R is the radius of approximate circular arc,
L is the arc length of approximate circular arc:
L=(C2+4h2)r/8h
H is the action of approximate circular arc:
C is the chord length of approximate circular arc:
B is bottle cap cut portion wall thickness,
A3It is the base square of cutting section approximate trapezoid,
A4It is the water table opening of cutting section approximate trapezoid,
A4>=0.3mm,
S3=[rL-C (r-h)]/2
S3For the bow-shaped area of approximate circular arc,
S2< S < S1,
The depth that bottle cap is embedded in the edge of a knife is B '.
CN201610681868.1A 2016-08-16 2016-08-16 The design method of involute blade Active CN107755718B (en)

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IT202000024511A1 (en) * 2020-10-16 2022-04-16 Sacmi CAPSULE ENGRAVING KNIFE

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CN1608777A (en) * 2004-11-12 2005-04-27 太原理工大学 Completely cutting tool for shaving and honing gear and its usage
CN102886791A (en) * 2011-07-21 2013-01-23 常州南苑塑料有限公司 Cutter of ring cutting machine
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