CN114535665B - Hole making method for weak rigid member - Google Patents
Hole making method for weak rigid member Download PDFInfo
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- CN114535665B CN114535665B CN202210438337.5A CN202210438337A CN114535665B CN 114535665 B CN114535665 B CN 114535665B CN 202210438337 A CN202210438337 A CN 202210438337A CN 114535665 B CN114535665 B CN 114535665B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
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Abstract
The invention discloses a hole making method of a weak rigid member, and relates to a hole making cutter for the weak rigid member, which comprises a cutter body, a rough machining blade, a finish machining blade and an annular transition groove which surrounds the cutter body for one circle. The hole making method of the weak rigid member comprises the following processing steps: drilling a primary hole on the component; and (5) adopting a hole making cutter to make a final hole on the component. According to the hole making tool and the hole making method, the technical problems of large deformation and low hole making precision in the hole making process caused by the traditional machining tool and the traditional machining method are solved. The invention reduces the deformation in the hole making process, thereby improving the hole site deviation, the aperture deviation and the roundness deviation and improving the hole making precision.
Description
Technical Field
The application relates to the field of boring, in particular to a hole making method for a weak rigid member.
Background
With the development of material preparation technology and equipment technology, the application of the laminated material of the weak rigid member in the field of aviation is more and more extensive, and simultaneously, the processing requirement is higher and higherThe processing difficulty is getting bigger and bigger. For example, the hole site precision of the weak rigid laminated member with the height of the edge strip of 50 mm-100 mm and the wall thickness of 1.5 mm-3 mm
High-precision holes with the hole diameter precision of 0.03mm-0.05 mm.
Aiming at the high-precision hole machining of the laminated material of the weak rigid member, at present, the traditional machining method is to directly use a drill bit to drill a final hole. The traditional machining tool and the traditional machining method can cause that holes are changed into elliptical holes, and the final hole positions, roundness and hole diameters all have deviations, so that the final hole making precision is low, and the use requirements cannot be met.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
Disclosure of Invention
The application mainly aims to provide a hole making method for a weak-rigidity member, and aims to solve the technical problem of low hole making precision.
In order to achieve the aim, the invention provides a hole making cutter for a weak rigid component, which comprises a cutter body, a rough machining blade, a finish machining blade and an annular transition groove, wherein the cutter body comprises a cutter body cutting end and a cutter body mounting end;
the rough machining blade, the annular transition groove and the finish machining blade are all arranged on the cutter body, and the rough machining blade, the annular transition groove and the finish machining blade are sequentially arranged along the direction from the cutting end of the cutter body to the mounting end of the cutter body;
the diameter of the roughing edge is smaller than the diameter of the finishing edge;
the width of the annular transition groove is larger than the thickness of the component to be processed.
Optionally, the cutter body is provided with at least one chip groove.
Optionally, the flutes extend from the end surface of the cutting end of the cutter body to or above the upper end of the finishing edge.
Optionally, the roughing edge and the finishing edge are located in the same plane.
Optionally, the chip groove is L type structure, the chip groove includes chip groove bottom surface and chip groove side, the one end of chip groove bottom surface with chip groove side connection form L type structure, the other end of chip groove bottom surface extends and forms the rough machining sword with the finish machining sword.
Optionally, the flute side face is of an arc-shaped structure.
Optionally, an included angle between the bottom surface of the chip removal groove and the axis of the cutter body is alpha, and alpha is 5-10 degrees.
Optionally, the cutter body still includes the cutter arbor, the cutter arbor is located finish machining sword with between the cutter body installation end, the diameter of cutter arbor is less than the diameter of rough machining sword, the chip groove extends to cutter arbor department.
Further, to achieve the above object, the present invention provides a method for making a weak rigid member, the method comprising: drilling a primary hole on a component to be machined to obtain a primary machined component comprising the primary hole;
and (4) adopting a hole making cutter to make a final hole on the primary processing member to obtain the member with the hole.
Optionally, the step of finishing the hole of the preliminary processed member by using a hole-making tool to obtain a holed member includes:
controlling the cutter body cutting end of the hole making cutter to drill into the primary hole of the primary processing component so as to perform primary deviation correction on the primary hole by using the rough processing blade;
controlling the hole drilling tool to continuously drill the primary hole, so that the primary hole after primary deviation correction moves into the annular transition groove, and the primary machining component after primary deviation correction generates deformation resilience in the annular transition groove;
and controlling the hole-making cutter to continuously drill towards the initial hole so as to perform secondary deviation correction on the initial hole by using the finish machining blade to make a final hole and obtain the member with the hole.
Has the advantages that:
according to the hole making cutter for the weak rigid member, the rough machining blade, the finish machining blade and the annular transition groove are arranged on the cutter body, the hole making is made of the rough machining blade and the finish machining blade, so that the cutting allowance is cut by the two blades, the cutting allowance of a single blade is reduced, the hole making cutting force is reduced, and the deformation in the hole making process is reduced; and after the rough machining blade is machined, the weak rigid structure is positioned between the rough machining blade and the finish machining blade at the moment, namely the weak rigid structure is positioned in the annular transition groove, at the stage, the cutter is not in contact with the weak rigid member, the weak rigid member naturally deforms and rebounds under the action of elastic potential energy, after rebounding, a final hole is manufactured by the finish machining blade, and the deviation of the hole site caused by deformation and rebounding after the final hole is formed is very small, so that the deviation of the hole site, the deviation of the hole diameter and the deviation of the roundness are improved, and the hole manufacturing precision is improved.
According to the hole making method for the weak-rigidity member, the technical problems of large deformation, large hole site deviation, large aperture deviation and large roundness deviation in the hole making process caused by a traditional machining tool and a traditional machining method are solved through the hole making tool and the hole making method. The invention reduces the cutting force when processing the final hole and reduces the deformation in the hole making process, thereby improving the hole position deviation, the aperture deviation and the roundness deviation and improving the hole making precision.
Drawings
FIG. 1 is a schematic perspective view of a hole forming tool according to the present invention;
FIG. 2 is a schematic plan view of the hole making tool of the present invention;
fig. 3 is a schematic structural view of an included angle alpha between the bottom surface of a chip removal groove and an axis of the drilling cutter;
FIG. 4 is a schematic structural view of a primary machined component in the hole making method of the present invention;
FIG. 5 is a schematic view showing the structure of an apertured member in the method of making an aperture according to the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
reference numerals: 1, a cutter body; 101-a cutter body cutting end; 102-a cutter body mounting end; 2-finishing the blade; 3-chip removal groove; 301-chip removal groove bottom; 302-flute sides; 4-an annular transition groove; 5-rough machining of the blade; 6-primary hole; 7-final pore; 8-primary processing the component; 9-a cutter bar; 10-a foraminous member; l-cutter body axis; s-width of annular transition groove; the included angle between the bottom surface of the alpha-chip removal groove and the axis of the cutter body; d1-diameter of roughing edge; d2-diameter of finishing edge; d3-diameter of the blade;
the implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, 2 and 3, wherein the left end in fig. 2 and 3 is a cutter body cutting end 101, and the right end is a cutter body mounting end 102, the first embodiment of the hole forming method for a weak rigid member of the present application provides a hole forming cutter for a weak rigid member, which comprises a cutter body 1, wherein the cutter body 1 comprises a cutter body cutting end 101 and a cutter body mounting end 102, and further comprises a rough machining edge 5, a finish machining edge 2 and an annular transition groove 4 which surrounds the cutter body 1 for one circle;
the rough machining blade 5, the annular transition groove 4 and the finish machining blade 2 are all arranged on the cutter body 1, and the rough machining blade 5, the annular transition groove 4 and the finish machining blade 2 are sequentially arranged from the cutter body cutting end 101 to the cutter body mounting end 102;
the diameter of the roughing edge 5 is smaller than the diameter of the finishing edge 2;
the width of the annular transition groove 4 is larger than the thickness of the component to be processed.
At present, for the hole making of the weak rigid member, namely the hole making of the member to be processed, the traditional processing method is to directly use a drill to carry out final hole drilling. Because the large-overhang thin-wall laminated component has a remarkable weak rigid structure, the edge strip deforms due to the axial force of a cutter in the hole making process, the actual hole making position has certain deviation from the theoretical position, and the hole position is out of tolerance after hole machining is finished. Meanwhile, after the component is drilled through, the axial force applied to the component is sharply reduced, the edge strip is rebounded, the hole is changed into an elliptical hole, and finally the hole position, the roundness and the hole diameter cannot meet the requirements. Particularly, to the system hole of weak rigidity component, traditional processing method directly uses the drill bit to carry out final hole drilling, at the drilling in-process, the component can be under the effect of drill bit axial force, downwards displacement, thereby lead to final hole position, the aperture all can't satisfy the demands, and use a drill bit to carry out final hole drilling, make the machining allowance of drill bit drilling more, required cutting force is just great, thereby the deflection in the system hole in-process is just great, simultaneously, after boring the material, the axial force that the component received can sharply diminish, the component can kick-back appears, lead to the hole to become the elliptical aperture, finally, the circularity can't satisfy the demands.
According to the hole making cutter for the weak-rigidity component, the rough machining blade 5, the finish machining blade 2 and the annular transition groove 4 are arranged on the cutter body 1, so that the component hole making process is divided into three steps, firstly, the rough machining blade 5 removes large allowance, namely most of cutting allowance, and the primary deviation rectifying stage is performed; in this stage, a large margin of the initial hole of the member is machined and removed by the roughing blade 5, and the hole site deviation of the initial hole is corrected for the first time, but local deformation is generated by the action of the cutting axial force. Then, the deformation rebound stage of the component between the rough machining edge 5 and the finish machining edge 2 is that the component is positioned in the annular transition groove 4, and in the stage, the cutter is not in contact with the component, and the component can naturally deform and rebound under the action of elastic potential energy. Because the cutter drills the component, the component can move downwards under the action of the axial force of the drill bit, after the rough machining blade 5 drills, the component can be positioned in the annular transition groove 4, at the moment, the component can naturally deform and rebound, namely move upwards and rebound to the initial position, so that the subsequent drilling of the finish machining blade 2 is facilitated, and the hole site deviation, the aperture deviation and the roundness deviation after the finish machining blade 2 drills are further reduced; finally, the finish hole of the finish machining blade 2 is formed, and a secondary deviation rectifying stage is adopted; at this stage it is ensured that: 1 final pore size: the aperture of the final hole is ensured by the size of the finish machining blade 2; 2 final hole site deviation: the finish machining blade 2 is used for secondarily correcting the hole site eccentricity caused by deformation springback, the single-side cutting allowance is small, the hole making cutting force is small, and the hole site deviation caused by deformation springback after the final hole is formed is small. The hole making process is made by two cutting edges, so that the cutting allowance is cut by the two cutting edges, the cutting allowance of a single cutting edge is reduced, and the hole making cutting force is reduced, so that the deformation in the hole making process is reduced, and the component is positioned between the rough machining edge 5 and the finish machining edge 2 at the moment after being machined by the rough machining edge 5, namely in the annular transition groove 4.
In order to enable the cutter to discharge the cutting chips generated during cutting in time during drilling and ensure the smoothness of the drilling process, the cutter can be further provided with a chip discharge groove 3, and the chip discharge groove 3 can be arranged on structures such as a cutting edge and a cutter body, specifically, in the embodiment, the cutter body 1 is at least provided with one chip discharge groove 3. This embodiment sets up a chip groove 3 on cutter body 1, and the number of chip groove 3 on the cutter body 1 can be for 1 or a plurality of, and a series of chip groove 3 structures such as current boring cutter, drill bit can be referred to its structure, thereby the number and the position of this embodiment comprehensive reference cutting edge set up the number of chip groove 3.
The structure of the tool chip groove 3 can refer to a series of existing chip groove 3 structures such as a boring tool, a milling tool, a drill and the like, for example, a straight groove, a spiral groove, an arc groove and the like are provided, and specifically, in the present embodiment, as shown in fig. 1, the chip groove 3 extends from the end surface of the cutting end 101 of the tool body to the upper end of the finishing blade 2 or above the upper end of the finishing blade 2. The chip groove 3 in the embodiment penetrates and communicates the rough machining blade 5 and the finish machining blade 2 from the end surface of the cutting end 101 of the cutter body, and finally penetrates through the upper end or more than the upper end of the finish machining blade 2, and the upper end of the finish machining blade 2 is the end, close to the cutter body mounting end 102, of the finish machining blade 2; run through intercommunication rough machining sword 5, finish machining sword 2 from the terminal surface of cutter body cutting end 101 through setting up chip groove 3 for rough machining sword 5, the produced cutting of finish machining sword 2 man-hour can be timely discharge from cutter body 1, guarantee the smoothness nature of rough machining sword 5 and the drilling of finish machining sword 2, set up the cutting that rough machining sword 5 and finish machining sword 2 produced in a chip groove 3 simultaneously, further increase the stability of drilling and chip removal, prevent that the cutting from hindering drilling.
The rough machining edge 5 and the finish machining edge 2 can be arranged in a staggered mode or located in the same plane, and in the embodiment, in order to enhance the stability and the fluency of drilling and chip removal, the rough machining edge 5 and the finish machining edge 2 are located in the same plane.
The chip groove 3 can refer to the existing drilling parts such as boring cutters, milling cutters and drill bits, such as a U-shaped groove, an arc-shaped groove, a straight groove, a rectangular groove, a spiral groove and the like, in this embodiment, in order to ensure that the rough machining blade 5 and the finish machining blade 2 are located on the same plane, the cutting generated by the rough machining blade 5 and the finish machining blade 2 is located in one chip groove 3, and the chip groove 3 is ensured to be stably discharged, the chip groove 3 is of an L-shaped structure, the chip groove 3 comprises a chip groove bottom surface 301 and a chip groove side surface 302, one end of the chip groove bottom surface 301 is connected with the chip groove side surface 302 in the L-shaped structure, and the other end of the chip groove bottom surface 301 extends to form the rough machining blade 5 and the finish machining blade 2. The chip groove 3 runs through and communicates the rough machining blade 5 and the finish machining blade 2 from the end face opening of the cutter body cutting end 101, and the rough machining blade 5 and the finish machining blade 2 are arranged at one end of the chip groove bottom surface 301, so that the rough machining blade 5 and the finish machining blade 2 are located on the same plane, the chip groove 3 can be smoothly cut by the rough machining blade 5 and the finish machining blade 2, and chip removal can be normally carried out.
The flute side surfaces 302 may be vertical planes, curved surfaces, arc-shaped surfaces, etc., and in this embodiment, the flute side surfaces 302 are arc-shaped structures in order to reduce frictional resistance to cutting through the flute side surfaces 302. Due to the characteristic of tool drilling, the chip will be rotated and discharged out of the chip groove 3, and the chip groove side surface 302 is set to be of an arc-shaped structure, so that the frictional resistance of cutting through the chip groove side surface 302 is reduced, the discharging of cutting is accelerated, and the smoothness of drilling is guaranteed.
As shown in fig. 3, the bottom surface 301 of the chip discharge groove and the axis of the cutter body 1 may be parallel, that is, the included angle is zero, or may form an included angle, in order to reduce the resistance force applied when cutting through the bottom surface 301 of the chip discharge groove, accelerate the discharge of cutting, and ensure the smoothness of drilling, the included angle between the bottom surface 301 of the chip discharge groove and the axis of the cutter body 1 is α, and α is 5 ° to 10 °.
As shown in fig. 1, the cutter body 1 further includes a cutter bar 9, the cutter bar 9 is located between the finishing cutting edge 2 and the cutter body mounting end 102, the diameter of the cutter bar 9 is smaller than that of the roughing cutting edge 5, and the chip grooves 3 extend to the cutter bar 9. By setting the diameter of the cutter bar 9 to be smaller than that of the rough machining blade 5, the cutter bar 9 cannot contact with a component when the cutter body 1 moves downwards, normal machining is guaranteed, and the cutter bar 9 is prevented from damaging a machined hole; through extending chip groove 3 to cutter arbor 9 department, guarantee that the cutting can normally discharge, guarantee the smoothness nature of drilling, increase the stability of cutter.
A method of making a hole in a less rigid member, the method comprising:
drilling a primary hole 6 on a component to be machined to obtain a primary machined component 8 comprising the primary hole 6;
and (3) adopting a hole making cutter to make a final hole 7 on the primary processing member to obtain the perforated member 10.
As shown in fig. 4, 5 and 6, fig. 4 is a schematic structural view of a preliminary processed member 8 obtained by drilling a preliminary hole 6 in the member; FIG. 5 is a schematic view showing the structure of a perforated member 10 obtained by finishing holes 7 in a preliminary processed member 8; the hole making method of the weak rigid member of the invention, carry on the drilling primary hole 6 to the member at first; the tool for drilling the initial hole 6 can be any tool, such as a common boring tool, a twist drill and the like, and aims to drill an initial hole first, so that the initial hole can be subjected to primary deviation correction and secondary deviation correction by using the hole-making tool of the invention subsequently, and a primary processing member 8 shown in fig. 4 is obtained; and then, a hole making cutter is adopted to make a final hole 7 for the primary hole 6 of the primary processing component 8, and the hole making cutter provided by the invention has a rough processing blade, an annular transition groove and a finish processing blade, so that the deformation of the final hole 7 made by the hole making cutter in the hole making process is reduced, the technical problems of hole site deviation, aperture deviation and roundness deviation are solved, and the hole making precision is improved.
The step of finishing the hole 7 of the preliminary processed member by a hole-making tool to obtain a holed member 10 includes:
controlling the cutter body cutting end 101 of the hole making cutter to drill towards the primary hole 6 of the primary machining member 8 so as to perform primary deviation rectification on the primary hole 6 by using the rough machining blade 5;
controlling the hole making cutter to continuously drill the primary hole 6, so that the primary hole 6 after primary deviation correction moves into the annular transition groove 4, and the primary machining member 8 after primary deviation correction generates deformation and resilience in the annular transition groove 4;
and controlling the hole making cutter to continuously drill the initial hole 6 so as to perform secondary deviation correction on the initial hole 6 by using the finish machining blade 2 to make a final hole 7 and obtain the perforated member 10.
The process for preparing the final hole 7 comprises the following steps: the rough machining blade 5 removes most of cutting allowance and is in a primary deviation rectifying stage; in the stage, a rough machining blade 5 is used for machining and removing the large allowance of a primary machining component 8, the hole site deviation of a primary hole is corrected, and local deformation can be generated due to the action of axial force; then, a deformation rebound phase of the rough machined member 8 between the rough machined edge 5 and the finish machined edge 2; at this stage, the hole-making tool does not contact the workpiece 8, and the workpiece 8 is deformed and rebounded by the elastic potential energy. Finally, performing secondary deviation correction on the primary hole 6 by using the finish machining blade 2 to manufacture a final hole 7, and obtaining a perforated member 10; and (5) forming a final hole of the finish machining blade 2 and performing secondary deviation rectification. The primary and final pore size is guaranteed at this stage: the aperture of the final hole is ensured by the size of the finish machining blade 2; II, deviation of hole positions of final holes: the finish machining blade 2 performs secondary deviation correction on the hole site eccentricity caused by deformation and resilience, the single-side cutting allowance is small, the cutting force during hole making is small, and the hole site deviation caused by deformation and resilience after the final hole forming is small.
To better illustrate the method of making holes in a less rigid member, a specific example of the method is described below with specific data:
aiming at a certain beam test piece, the maximum overhanging size of the weak rigid structure is 90mm, the thickness is delta 3mm, 90 holes are required to be manufactured in the weak rigid area of the whole beam test piece, and the hole diameter is
The tolerance of the aperture is 0 mm-0.03 mm, and the hole position is manufacturedTolerance is
S1: made of ordinary hard alloy twist drill
Primary hole forming;
s2: using the hole-making tool of the present invention to make the final hole:
in S2, the machining parameters of the hole forming tool of the present invention are determined:
three stages of pore finishing:
the first stage is as follows: a rough machining blade 5 large allowance removing and primary deviation rectifying stage;
the unilateral margin delta of the rough machining edge is 0.13mm, and parameters required by machine tool machining can be obtained according to a calculation formula, a dynamometer, simulation software, working experience and other common modes in the prior art:
and a second stage: a deformation rebound phase of the weak rigid structure between the rough machining edge 5 and the finish machining edge 2;
and a third stage: a final hole forming and secondary deviation rectifying stage of the finish machining blade 2;
and (3) determining the machining parameters of the finishing edge according to the operation flow described in the first stage.
And (3) final hole making:
the parameters required for machining the machine tool can be obtained according to a calculation formula, a dynamometer, simulation software, working experience and other common modes in the prior art, and in the specific embodiment, the cutter is used to obtain the final machining parameters n of 1000r/min and F of 80mm/min
And (4) a hole.
The measurement results are obtained by experiments:
use of
Making primary holes by common hard alloy twist drillThe initial hole positions are all larger than
Mean deviation of
The longer the beam experiment piece is overhung, the larger the hole position deviation is.
After the final hole is manufactured by using the hole manufacturing cutter, the final hole is measured, and the deviation of the hole position of the final hole is smaller than
Average hole site deviation of
All the apertures are
In the range of (+0.03/0) mm, the average pore diameter was 6.373 mm.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.
Claims (8)
1. A hole making method of a weak rigid member is characterized in that a hole making cutter for the weak rigid member is adopted;
the hole making cutter comprises a cutter body (1), wherein the cutter body (1) comprises a cutter body cutting end (101) and a cutter body mounting end (102), and further comprises a rough machining blade (5), a finish machining blade (2) and an annular transition groove (4) which surrounds the cutter body (1) for one circle;
the rough machining blade (5), the annular transition groove (4) and the finish machining blade (2) are all arranged on the cutter body (1), and the rough machining blade (5), the annular transition groove (4) and the finish machining blade (2) are sequentially arranged along the direction from the cutter body cutting end (101) to the cutter body mounting end (102);
the diameter of the rough machining edge (5) is smaller than that of the fine machining edge (2);
the width of the annular transition groove (4) is larger than the thickness of a component to be machined;
the hole making method comprises the following steps:
drilling a primary hole (6) on a component to be machined to obtain a primary machined component (8) comprising the primary hole (6);
a hole making cutter is adopted to make a final hole (7) on the primary processing component, and a component (10) with a hole is obtained;
the step of using a hole-making tool to make a final hole (7) in the primary machined member to obtain a perforated member (10) comprises:
controlling the drilling of the body cutting end (101) of the hole making tool into the primary hole (6) of the primary member (8) to perform a primary deviation correction of the primary hole (6) by means of the roughing blade (5);
controlling the hole-making cutter to continuously drill towards the primary hole (6), so that the primary hole (6) after primary deviation correction moves into the annular transition groove (4), and the primary machining component (8) after primary deviation correction generates deformation and resilience in the annular transition groove (4);
and controlling the hole-making cutter to continuously drill towards the initial hole (6) so as to perform secondary deviation correction on the initial hole (6) by using the finish machining blade (2) to make a final hole (7) and obtain the perforated member (10).
2. A method for making a hole in a less rigid component according to claim 1, characterized in that the tool body (1) is provided with at least one chip space (3).
3. A method of drilling a hole in a less rigid member according to claim 2, wherein the chip groove (3) extends from the end surface of the cutting end (101) of the tool body to the upper end of the finishing edge (2) or above the upper end of the finishing edge (2).
4. A method for making a hole in a less rigid member according to claim 1, 2 or 3, characterized in that said roughing edge (5) and said finishing edge (2) are located on the same plane.
5. A method of drilling a hole in a less rigid member according to claim 2, characterized in that said chip groove (3) is of L-shaped configuration, said chip groove (3) comprises a chip groove bottom surface (301) and a chip groove side surface (302), said chip groove bottom surface (301) has one end connected to said chip groove side surface (302) in L-shaped configuration, and said chip groove bottom surface (301) has the other end extended to form said roughing edge (5) and said finishing edge (2).
6. A method of making a hole in a less rigid member as defined in claim 5, characterised in that said flute side surfaces (302) are of arcuate configuration.
7. A method of drilling a hole in a less rigid component according to claim 5, characterized in that the angle between the chip groove bottom surface (301) and the axis of the tool body (1) is α, which is 5 ° to 10 °.
8. A method of drilling a hole in a less rigid member as defined in claim 2, wherein the tool body (1) further comprises a tool shank (9), the tool shank (9) being located between the finishing edge (2) and the tool body mounting end (102), the tool shank (9) having a diameter smaller than the roughing edge (5), the flutes (3) extending to the tool shank (9).
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