CN110497005B - Efficient hole drilling tool and inclined-angle hole drilling method for carbon fiber composite material - Google Patents
Efficient hole drilling tool and inclined-angle hole drilling method for carbon fiber composite material Download PDFInfo
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- CN110497005B CN110497005B CN201910806324.7A CN201910806324A CN110497005B CN 110497005 B CN110497005 B CN 110497005B CN 201910806324 A CN201910806324 A CN 201910806324A CN 110497005 B CN110497005 B CN 110497005B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
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Abstract
The invention discloses a carbon fiber composite material efficient hole making cutter and an inclination angle hole making method, and belongs to the field of carbon fiber composite material machining. The inclined hole making method mainly comprises the following steps: calculating parameters; the cutter is parallel to the axis of the aperture, rotates and feeds downwards along the axial direction, and performs split-flow machining layer by layer, so that the aperture error is kept IT7-IT8 finally; if the aperture error does not meet IT8-IT9, adjusting the inclination angle of the cutter and the aperture axis, pre-milling the hole, performing zero idle stroke finish hole supplement milling, adjusting the cutter axis to be parallel to the aperture axis and the eccentricity, and removing the aperture allowance; if the cutter does not meet IT7-IT8, the inclination angle of the cutter and the axis of the aperture is kept, the hole is pre-milled and the final hole is milled in a supplementing way, the cutter returns to the initial zero point after the hole is made, and the quality detection is carried out. The efficient hole making cutter and the inclination angle hole making method for the carbon fiber composite material can avoid the processing defects of burrs, layering and the like of the composite material.
Description
Technical Field
The invention relates to the field of machining of carbon fiber composites, in particular to a high-efficiency hole-making cutter and an inclination hole-making method for carbon fiber composites.
Background
With the development of aerospace technology, lightweight and high-quality equipment is highly concerned by all countries, a carbon fiber composite material (CFRP) is a resin matrix composite material taking carbon fibers as a reinforcement, has excellent performances of light weight, high specific strength, high specific modulus, high corrosion resistance, strong designability and the like, and is widely applied to the field of aerospace, wherein CFRP materials are adopted by Boeing-series passenger planes by more than 50%, only 3 body section connecting holes of an A380 plane are more than 10000, and each pair of wings needs 8000 connecting holes. The traditional drilling technology mainly reduces the layering and the generation of tearing processing defects by reducing the length of a cutter chisel edge, increasing the design of a front angle and supporting the outlet side of a carbon fiber composite material, but the generated burr defects cannot be effectively removed or repaired through the same drilling processing procedure, the processing efficiency is restricted, and the aperture quality is difficult to guarantee. The spiral hole milling process reduces the hole-making burrs by reducing the axial force, easily causes the local abrasion of the cutter to be aggravated, reduces the service life of the cutter, also cannot finish the burr removal or the trimming by one-time processing, and restricts the production efficiency and the quality of workpieces. Therefore, an efficient carbon fiber composite material hole making cutter and a reliable hole making method are urgently needed, the possibility of defects such as burrs or layering is reduced by one-time hole making processing, the hole making method of layer-by-layer processing and inclination angle trimming is realized, the service life of the cutter and the quality of hole parts are prolonged, and high-quality and efficient hole making is realized.
Disclosure of Invention
The invention aims to provide a carbon fiber composite material efficient hole making cutter and an inclination angle hole making method, which are used for solving the problems in the prior art, realizing a layer-by-layer machining and inclination angle trimming hole making method, prolonging the service life of the cutter and the quality of a hole piece, and realizing high-quality and efficient hole making.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides an inclination angle hole making method of a high-efficiency hole making cutter adopting a carbon fiber composite material, which comprises the following steps of:
s1, calculating the aperture, the cutter parameters, the material thickness, the eccentricity and the process parameters; the carbon fiber composite material efficient hole-making cutter is parallel to the aperture axis, autorotates and feeds downwards along the axial direction, a cutter bottom cutting part and a composite cutting part are used for sequentially performing compact inner contour circumferential hole milling, laminar rough machining, semi-finish machining and finish machining are finished layer by layer, the aperture error meets IT8-IT9, and IT7-IT8 are finally maintained; adjusting the eccentricity to zero to avoid interference between the cutter and the hole wall, returning the cutter to the initial zero point, finishing machining and performing quality detection;
s2, if the aperture error does not meet the range of IT8-IT9, adjusting the inclination angle range of the axis of the carbon fiber composite efficient hole-making cutter and the aperture axis to be 1-3 degrees, making the inner contour circumferential hole-milling technological parameters, keeping the inclination angle of the cutter, completing laminar feeding layer by layer downwards along the axial direction, performing compact inner contour circumferential inclination angle pre-hole milling, and keeping the balance of 0.01-0.05 mm; finally, a final hole is subjected to additional milling, a zero idle stroke additional milling final hole is introduced, the axis of the cutter is kept parallel to the axis of the aperture, the eccentricity of the cutter is adjusted to remove the aperture allowance, the aperture requirement is met, the additional milling cutting edge is applied to perform inner contour circumference additional milling of the final hole upwards along with the autorotation axis of the cutter until the aperture error meets the range of IT8-IT9, the machining is completed, and the quality detection is performed;
s3, if the aperture error meets the range of IT8-IT9 and does not meet the range of IT7-IT8, adjusting the inclination angle range of the axis of the carbon fiber composite material efficient hole-making cutter and the aperture axis to be 1-3 degrees and the allowance to be 0.01-0.03 mm, formulating inner contour circumferential hole milling technological parameters, performing layer-by-layer inclination angle pre-milling, keeping the inclination angle of the cutter, completing layer-by-layer flow feeding downwards along the axial direction, and performing compaction type inner contour circumferential inclination angle pre-milling; and finally, milling the final hole in a supplementing way, keeping the inclination angle unchanged, adjusting the eccentricity to remove allowance, applying a milling-supplementing cutting edge to carry out zero idle stroke milling on the final hole upwards along with the rotation axis of the cutter until the aperture error meets the range of IT7-IT8, finishing processing, and carrying out quality detection.
The invention also provides a carbon fiber composite material efficient hole-making cutter, which comprises a cutter bar, wherein the bottom of the cutter bar is connected with a milling-supplementing cutting edge, the bottom of the milling-supplementing cutting edge is connected with a composite cutting part, and the composite cutting part is connected with a bottom cutting part; the diameter D1 of the cutter rod is smaller than the diameter D2 of the milling cutting edge, and the size of (D2-D1)/2 is 0.1-0.5 mm; the composite cutting part is provided with a top blade connected with the milling supplementing cutting blade and a tail blade connected with the bottom cutting part, and a peripheral blade is connected between the top blade and the tail blade; the peripheral edge is provided with a right-handed cutting edge and a left-handed cutting edge which are connected in an angle; the right-handed cutting edge is provided with a right-handed cutting edge front cutter surface and a right-handed cutting edge rear cutter surface, and the left-handed cutting edge is provided with a left-handed cutting edge front cutter surface and a left-handed cutting edge rear cutter surface; the bottom cutting portion has a plurality of teeth, each tooth having a bottom cutting edge with a bottom edge rake surface and a bottom edge relief surface.
Optionally, the diameter D3(i) ═ D4+2H of the composite cutting portion3(i)·tan，i＝1,..,max，H3(1)＝1.5HCFRP，H3(max)＝3HCFRP(ii) a Wherein H3(i) D4 is the diameter of the bottom cutting part, D hole/D4 is 1.2-1.4, D hole is the diameter of the hole to be processed, HCFRPThe thickness of the carbon fiber composite material is the included angle between the peripheral edge and the axis of the cutter, and the included angle is 1-3 degrees, D2 is D3 (i).
Optionally, the milling cutting edge has 4-8 teeth with different tooth spacing distribution, and the tooth spacing angles are theta1、θ2、θ3Are arranged centrosymmetrically, and theta1＞θ2＞θ3。
Optionally, the milling and cutting edge adopts a straight edge structure or a chip removal edge structure or a structure that the straight edge structure is combined with the chip removal edge structure and is distributed at intervals.
Optionally, the top edge is a straight cutting edge or a fillet cutting edge with a fillet radius of 0.01-0.05 mm.
Optionally, the helix angle β of the left hand cutting edge1Helix angle β to said right-hand cutting edge2For equal helix angle designs or for unequal helix angle designs.
Optionally, the teeth of the bottom cutting part comprise two core-passing teeth and a plurality of non-core-passing teeth, the core-passing teeth are straight edge bottom cutting edges and adopt straight teeth or Z-shaped teeth arranged at 180 degrees, the teeth of the bottom cutting part are distributed with unequal tooth spacing in central symmetry, the unequal tooth design of L1 & gt L2 & gt L3 is met, and L is the length of the teeth.
Compared with the prior art, the invention has the following technical effects:
the invention can realize one-time hole making, and shunt finish rough machining, semi-finish machining and finish machining, meets the hole making precision requirement, improves the production efficiency, reduces the local abrasion of the cutter and reduces the production cost. The inclination angle pre-milling method is introduced, so that the drilling, reaming and hole repairing are finished layer by layer, the defects such as burrs and the like are effectively removed, the aperture precision is improved, the local abrasion of a cutter is reduced, the aperture repairing and milling cutting edge is applied to carry out aperture repairing, the possibility of hole manufacturing defects is reduced, and the hole manufacturing efficiency is improved. The prefabricated hole is milled layer by using the inclination angle and the final hole is milled in a complementary manner by using the inclination angle, so that the cutting force can be effectively reduced, the defects of fiber burrs are overcome, the generation of layering and tearing is avoided, and high-quality and high-efficiency processing is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of an efficient hole-making tool made of carbon fiber composite material according to the present invention;
FIG. 2 is a schematic view of a composite cutting portion;
FIG. 3 is a schematic structural view of a straight edge with unequal tooth spacing for a milling and cutting edge;
FIG. 4 is a schematic view of a chip removal blade with unequal tooth spacing for a milling and cutting edge;
FIG. 5 is a schematic view of the combination of a milling-supplementing cutting edge with a straight edge having unequal tooth spacing and a chip removal edge;
FIG. 6 is a schematic view of a straight cutting edge structure for the top edge;
FIG. 7 is a schematic view of a configuration in which the top edge employs a radiused cutting edge;
FIG. 8 is a schematic view of the bottom cutting portion and the unequal tooth spacing;
FIG. 9 is a schematic view of a straight tooth configuration of a bottom cutting edge;
FIG. 10 is a view showing the zigzag tooth structure of the bottom cutting edge;
FIG. 11 is a schematic view of a bottom cutting edge with a non-uniform tooth structure;
FIG. 12 is a schematic flow chart of an inclination angle hole drilling method of the high-efficiency hole drilling tool made of carbon fiber composite material according to the present invention;
FIG. 13 is a schematic view of a process of pre-milling holes and post-milling finish holes with inclination angles layer by layer;
wherein, 1 is a cutter bar, 2 is a milling cutter edge, 3 is a composite cutting part, 31 is a top edge, 32 is a peripheral edge, 321 is a right-handed cutting edge, 3211 is a right-handed cutting edge rake face, 3212 is a right-handed cutting edge flank face, 322 is a left-handed cutting edge, 3221 is a left-handed cutting edge rake face, 3222 is a left-handed cutting edge flank face, 33 is a tail edge, 4 is a bottom cutting part, 41 is a bottom cutting edge, 42 is a bottom edge rake face, and 43 is a bottom edge flank face.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a carbon fiber composite material efficient hole making cutter and an inclination angle hole making method, which are used for solving the problems in the prior art, realizing a layer-by-layer machining and inclination angle trimming hole making method, prolonging the service life of the cutter and the quality of a hole piece, and realizing high-quality and efficient hole making.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the carbon fiber composite material efficient hole-making tool provided by the invention comprises a tool bar 1, a milling-repairing cutting edge 2, a composite cutting part 3 and a bottom cutting part 4. As shown in fig. 2, the composite cutting portion 3 has a top edge 31, a peripheral edge 32, and a tip edge 33, and the peripheral edge 32 has a right-hand cutting edge 321, a right-hand cutting edge rake surface 3211, a right-hand cutting edge flank surface 3212, and a left-hand cutting edge 322A left-handed cutting edge front tool surface 3221 and a left-handed cutting edge rear tool surface 3222. the milling cutting edge 2 is connected with the combined cutting part 3 through a top edge 31, the combined cutting part 3 is connected with the bottom cutting part 4 through a tail edge 33, and a right-handed cutting edge helix angle β1Left hand cutting edge helix angle β2。
As shown in FIGS. 3-11, the left-hand cutting edge 322 and the right-hand cutting edge 321 are designed with equal helix angles, such as the helix angle β of the right-hand cutting edge 3211At 20 deg., left hand cutting edge 322 helix angle β220 degrees, or the left-hand cutting edge 322 and the right-hand cutting edge 321 are designed with unequal helix angles, such as the helix angle β of the right-hand cutting edge 3211At 27 deg., left hand cutting edge 322 helix angle β225 deg. or the left-hand cutting edge 322 and the right-hand cutting edge 321 are designed with a variable helix angle, such as the helix angle β of the right-hand cutting edge 3211Is a gradient of 27 to 20 degrees, and the left-hand cutting edge 322 has a helix angle β2The gradient is 27 degrees to 20 degrees.
As shown in figure 1, the cutter bar 1 is connected with the milling-supplementing cutting edge 2, the diameter D1 of the cutter bar 1 is smaller than the diameter D2 of the milling-supplementing cutting edge 2, and the requirement (D2-D1)/2 is in the range of 0.1-0.5 mm. The diameter D3(i) of the composite cutting portion 3 is dependent on the composite cutting portion length H3(i) And the diameter D4 of the bottom cutting part 4, and satisfies the condition that D3(i) ═ D4+2H3(i)·tan，i＝1,..,max,H3(1)＝1.5HCFRP，H3(max)＝3HCFRPPreferably H3＝2HCFRP，HCFRPThe thickness of the carbon fiber composite material is 1-3 degrees, D2 is D3(i),
the diameter D4 of the bottom cutting part 4 satisfies D hole/D4 is 1.2-1.4, the number of teeth is 4-8, preferably 6 teeth, two teeth pass through the core to form core-passing teeth, and other teeth do not pass through the core.
H3＝1.5HCFRP，D3(i)＝D4+2H3(i) Tan, wherein HCFRPTaking 1-8mm, taking 6-12mm as D4, and taking 1-3 degrees.
In another embodiment, H3＝2HCFRP，D3(i)＝D4+2H3(i) Tan, wherein HCFRPTaking 1-8mm, taking 6-12mm as D4, and taking 1-3 degrees. Or H3＝3HCFRP，D3(i)＝D4+2H3(i) Tan, wherein HCFRP1-8mm is taken, 6-12mm is taken as D4, and 1-3 degrees is taken.
D2 ═ D3(i), (D2-D1)/2 taken as 0.2 mm.
In another embodiment, D2 ═ D3(i), (D2-D1)/2 is 0.3 mm. Or D2 ═ D3(i), (D2-D1)/2 is 0.5 mm.
As shown in FIGS. 3-5, the milling cutting edge 2 has 4-8 teeth, preferably 6 teeth, with 6 teeth having a non-uniform pitch distribution and a respective tooth pitch angle θ1、θ2、θ3Arranged according to centrosymmetry, theta1＞θ2＞θ3Preferably theta1＝80°，θ2＝60°，θ3＝40°。
In another embodiment, the milling cutting edge 2 is a straight edge with unequal tooth spacing, as shown in fig. 3. Or the milling supplementing cutting edge 2 adopts a chip removal edge structure with unequal tooth spacing, as shown in figure 4. Or the milling supplementing cutting edge 2 adopts a structure that straight edges with different tooth distances and chip removal edges are arranged at intervals, as shown in figure 5.
The top edge is a straight cutting edge as shown in fig. 6. In another embodiment, the top edge is a radiused cutting edge with a radius of 0.01-0.05mm, as shown in FIG. 7.
The teeth of the bottom cutting portion 4 include a bottom cutting edge 41, a bottom edge rake face 42, and a bottom edge flank face 43, as shown in fig. 8. The bottom cutting edge 41 adopts unequal tooth spacing distribution, and the tooth spacing angles are respectively theta1、θ2、θ3Arranged according to centrosymmetry, theta1＞θ2＞θ3Preferably theta1＝80°，θ2＝60°，θ3＝40°
In another embodiment, the two over-core teeth of the bottom cutting portion 4 are straight bottom cutting edges, and are arranged in a line at 180 ° as shown in fig. 9.
In another embodiment, the over-core teeth of the bottom cutting portion 4 are straight bottom cutting edges, are zigzag-shaped teeth, and are arranged at 180 °, as shown in fig. 10.
The 6 teeth of the bottom cutting portion 4 are of unequal tooth design, L1 > L2 > L3, and are arranged according to central symmetry, preferably L1 ═ D4/2, L2 ═ D4/3, L3 ═ D4/4, as shown in fig. 11.
The invention also provides an inclination angle hole making method adopting the carbon fiber composite material high-efficiency hole making cutter, which comprises the steps of firstly calculating the aperture, the cutter parameters, the material thickness, the eccentricity, the process parameters and the like, performing inclination angle prefabrication hole layer by layer, enabling the cutter axis to be parallel to the aperture axis, enabling the cutter to rotate and feed downwards along the axial direction, sequentially performing compaction type inner contour circumferential hole milling by using the bottom cutting part 4 and the composite cutting part 3, and performing laminar rough machining, semi-finish machining and finish machining layer by layer to enable the aperture error to meet IT8-IT9 and keeping IT7-IT 8; adjusting the eccentricity to zero to ensure the coaxiality of the cutter and the aperture, avoiding the interference between the cutter and the aperture wall, returning the cutter to the initial zero point, finishing the machining and carrying out the quality detection, as shown in fig. 12.
If the aperture error does not meet the range of IT8-IT9, performing layer-by-layer inclination angle prefabrication, adjusting the inclination angle gamma range of the axis of the cutter and the aperture axis of the cutter to be 1-3 degrees, making inner contour circumferential hole milling technological parameters, keeping the inclination angle of the cutter according to the rotation speed ns, sequentially performing axial downward layer-by-layer flow type feeding by using the bottom cutting part 4 and the composite cutting part 3, performing compact inner contour circumferential inclination angle pre-milling according to the revolution speed nw, and performing layer-by-layer flow type hole making, namely inclination angle pre-milling, with the balance of 0.01-0.05 mm; and then, milling a final hole: introducing a zero idle stroke finish hole by means of additional milling, adjusting the axis of a cutter to be parallel to the axis of the aperture, namely gamma is equal to 0 degree, adjusting the eccentricity of the cutter, removing the aperture allowance, meeting the aperture requirement, and applying an additional milling cutting edge to perform inner contour circumference additional milling of the finish hole upwards along with the autorotation axis of the cutter, so that the aperture error is kept in the range of IT 7-TI 8; and returning the hole-making finishing tool to the initial zero point, finishing machining and performing quality detection, as shown in figures 12 and 13.
If the aperture error meets IT8-IT9 and does not meet the requirements of IT 7-TI 8, hole prefabrication is carried out by layer inclination angles, the inclination angle gamma range of the axis of the cutter and the aperture axis of the invention is adjusted to be 1-3 degrees, inner contour circumferential hole milling technological parameters are formulated, the cutter keeps the inclination angle according to the rotation speed ns, the bottom cutting part 4 and the composite cutting part 3 are applied, laminar feeding is completed layer by layer along the axial direction, layer by layer split flow type hole making is carried out, compact inner contour circumferential inclination angle pre-milling is carried out according to the revolution speed nw, and the allowance is 0.01-0.03 mm, and layer by layer inclination angle pre-milling is carried out; then, milling a final hole: keeping an inclination angle of 1-3 degrees, namely an inclination angle gamma between the axis of the cutter and the axis of the aperture, adjusting the eccentricity, removing allowance, performing zero idle stroke finish hole supplement milling, and applying a supplement milling cutting edge to perform inner contour circumference supplement milling on the finish hole upwards along with the autorotation axis of the cutter so that the aperture error is kept IT 7-TI 8; and finishing hole making. And (4) finishing the machining, performing quality detection, adjusting the coaxiality of the axis of the cutter and the axis of the hole, returning the cutter to the initial zero point, finishing the machining, and performing quality detection, as shown in fig. 12 and 13.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. The inclination angle hole making method of the carbon fiber composite material efficient hole making cutter comprises a cutter bar, wherein the bottom of the cutter bar is connected with a milling and repairing cutting edge, the bottom of the milling and repairing cutting edge is connected with a composite cutting part, and the composite cutting part is connected with a bottom cutting part; the diameter D1 of the cutter rod is smaller than the diameter D2 of the milling cutting edge, and the size of (D2-D1)/2 is 0.1-0.5 mm; the composite cutting part is provided with a top blade connected with the milling supplementing cutting blade and a tail blade connected with the bottom cutting part, and a peripheral blade is connected between the top blade and the tail blade; the peripheral edge is provided with a right-handed cutting edge and a left-handed cutting edge which are connected in an angle; the right-handed cutting edge is provided with a right-handed cutting edge front cutter surface and a right-handed cutting edge rear cutter surface, and the left-handed cutting edge is provided with a left-handed cutting edge front cutter surface and a left-handed cutting edge rear cutter surface; the bottom cutting portion has a plurality of teeth, each tooth having a bottom cutting edge having a bottom edge rake surface and a bottom edge relief surface, characterized in that: the inclined hole making method comprises the following steps:
s1, calculating the aperture, the cutter parameters, the material thickness, the eccentricity and the process parameters; the carbon fiber composite material efficient hole-making cutter is parallel to the aperture axis, autorotates and feeds downwards along the axial direction, a cutter bottom cutting part and a composite cutting part are used for sequentially performing compact inner contour circumferential hole milling, laminar rough machining, semi-finish machining and finish machining are finished layer by layer, the aperture error meets IT8-IT9, and IT7-IT8 are finally maintained; adjusting the eccentricity to zero to avoid interference between the cutter and the hole wall, returning the cutter to the initial zero point, finishing machining and performing quality detection;
s2, if the aperture error does not meet the range of IT8-IT9, adjusting the inclination angle range of the axis of the carbon fiber composite efficient hole-making cutter and the aperture axis to be 1-3 degrees, making the inner contour circumferential hole-milling technological parameters, keeping the inclination angle of the cutter, completing laminar feeding layer by layer downwards along the axial direction, performing compact inner contour circumferential inclination angle pre-hole milling, and keeping the balance of 0.01-0.05 mm; finally, a final hole is subjected to additional milling, a zero idle stroke additional milling final hole is introduced, the axis of the cutter is kept parallel to the axis of the aperture, the eccentricity of the cutter is adjusted to remove the aperture allowance, the aperture requirement is met, the additional milling cutting edge is applied to perform inner contour circumference additional milling of the final hole upwards along with the autorotation axis of the cutter until the aperture error meets the range of IT8-IT9, the machining is completed, and the quality detection is performed;
s3, if the aperture error meets the range of IT8-IT9 and does not meet the range of IT7-IT8, adjusting the inclination angle range of the axis of the carbon fiber composite material efficient hole-making cutter and the aperture axis to be 1-3 degrees and the allowance to be 0.01-0.03 mm, formulating inner contour circumferential hole milling technological parameters, performing layer-by-layer inclination angle pre-milling, keeping the inclination angle of the cutter, completing layer-by-layer flow feeding downwards along the axial direction, and performing compaction type inner contour circumferential inclination angle pre-milling; and finally, milling the final hole in a supplementing way, keeping the inclination angle unchanged, adjusting the eccentricity to remove allowance, applying a milling-supplementing cutting edge to carry out zero idle stroke milling on the final hole upwards along with the rotation axis of the cutter until the aperture error meets the range of IT7-IT8, finishing processing, and carrying out quality detection.
2. The method of claim 1, wherein the hole is formed by using a carbon fiber composite material with a high efficiencyCharacterized in that: the diameter D3(i) of the composite cutting part is D4+2H3(i)·tan，i＝1,..,max，H3(1)＝1.5HCFRP，H3(max)＝3HCFRP(ii) a Wherein H3(i) D4 is the diameter of the bottom cutting part, D hole/D4 is 1.2-1.4, D hole is the diameter of the hole to be processed, HCFRPThe thickness of the carbon fiber composite material is the included angle between the peripheral edge and the axis of the cutter, and the included angle is 1-3 degrees, D2 is D3 (i).
3. The inclined-angle hole making method adopting the carbon fiber composite material efficient hole making cutter as claimed in claim 1, is characterized in that: the milling cutting edge has 4-8 teeth with unequal tooth spacing distribution, and the tooth spacing angles are theta1、θ2、θ3Are arranged centrosymmetrically, and theta1＞θ2＞θ3。
4. The inclined-angle hole making method adopting the carbon fiber composite material efficient hole making cutter as claimed in claim 1, is characterized in that: the supplementary milling cutting edge adopts a straight edge structure or a chip removal edge structure or a structure that the straight edge structure is combined with the chip removal edge structure and is distributed at intervals.
5. The inclined-angle hole making method adopting the carbon fiber composite material efficient hole making cutter as claimed in claim 1, is characterized in that: the top edge is a straight cutting edge or a fillet cutting edge with the fillet radius of 0.01-0.05 mm.
6. The method for drilling a hole with an inclination angle of a high-efficiency drilling tool made of carbon fiber composite material as claimed in claim 1, wherein the helix angle β of the left-hand cutting edge1Helix angle β to said right-hand cutting edge2For equal helix angle designs or for unequal helix angle designs.
7. The inclined-angle hole making method of the carbon fiber composite high-efficiency hole making cutter is characterized in that the teeth of the bottom cutting part comprise two core-passing teeth and a plurality of non-core-passing teeth, the core-passing teeth are straight-edge bottom cutting edges and are straight teeth or Z-shaped teeth arranged at 180 degrees, the teeth of the bottom cutting part are distributed by unequal tooth spacing in central symmetry, the unequal tooth design of L1 & gt L2 & gt L3 is met, and L is the length of the teeth.
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| JP3891727B2 (en) * | 1999-05-28 | 2007-03-14 | オーエスジー株式会社 | End mill |
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