WO2018120274A1 - 分径移位麻花钻 - Google Patents

分径移位麻花钻 Download PDF

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Publication number
WO2018120274A1
WO2018120274A1 PCT/CN2017/000729 CN2017000729W WO2018120274A1 WO 2018120274 A1 WO2018120274 A1 WO 2018120274A1 CN 2017000729 W CN2017000729 W CN 2017000729W WO 2018120274 A1 WO2018120274 A1 WO 2018120274A1
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Prior art keywords
spiral
strength
millimeter
cutting
twist drill
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PCT/CN2017/000729
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English (en)
French (fr)
Inventor
李仕清
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李仕清
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Publication of WO2018120274A1 publication Critical patent/WO2018120274A1/zh

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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
    • B23B51/02—Twist drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2229/00—Details of boring bars or boring heads
    • B23B2229/12—Cutting inserts located on different radii

Definitions

  • the invention relates to a split-displacement twist drill, which is used in the drilling and milling process of mechanical machining and the repair of the fitter.
  • the new machining theory considers that the segmented stepped cutting edge has high cutting efficiency, however When the stepped cutting edge is gradually extended, the effect is noticeably reduced until it disappears, so the theory is still not a true theory.
  • the drilling tool used in machining consists of a chisel edge, a cutting edge, a spiral cutting edge and a side edge.
  • the cutting edge has a single in-situ cutting structure on a spiral cutting surface, and the centrifugal edge of the cutting edge in the rotary cutting Inside, the cutting edge is subjected to both the rotating cutting force and the center-out conduction force.
  • the edge of the intersection of the cutting edge and the helical cutting edge is always easily damaged under the action of the double force.
  • the existing hole machining tool is bored due to the structure. It is not absolutely balanced and there is a swing phenomenon.
  • the spiral cutting surface and the spiral cutting edge are damaged by the stable cutting tool on the spiral cutting surface.
  • the present invention has been made in view of the above problems, and aims to provide a split-displacement twist drill having the function of blocking the conductive force, high heat dissipation efficiency, high strength, long service life, and drilling processing. It is easy to locate and has high drilling precision. It is generally recognized that the smoother the surface, the higher the strength. In recent years, the new theory is that the surface strength with small gap is higher, and the essential structural characteristics of the substance are not revealed. In the case where the solid volume is the same, the surface area of the small-volume solid dispersed therein is larger than the surface area of the whole solid, and even if the whole structure of the solid reaches a certain volume limit, even the diamond may be broken, and the force is small by the volume force.
  • the sum of the strengths of the solids of the volume is much greater than the strength of the solids of the whole solid. It has been experimentally verified that the cutting tool in the conventional physical state has the most obvious high-strength characteristic, that is, the millimeter strength, and the present invention is in the division.
  • the radial displacement twist drill is used for applications with millimeter strength.
  • a split-diameter twist drill relating to a drilling tool for machining, comprising a tool shank and a tool head, the tool head being integrally provided with at least two spiral strips, and a surface facing each other in the cutting direction is formed as a spiral
  • the surface on the outer surface side of the spiral cutting surface in the rotation direction is a spiral auxiliary cutting surface
  • the spiral cutting surface and the spiral auxiliary cutting surface intersect to form a spiral cutting edge
  • the axial cutting end surface of the spiral cutting surface is formed as a surface.
  • the volume limit of solids is affected by temperature and gravity of the earth.
  • the ultimate volume is relatively small.
  • the solid volume is reduced, its strength is appropriately enhanced, and the millimeter strength is more prominent.
  • the sum of the surface areas of the solids dispersed into a small volume is larger than the surface area of the solids of the same amount, and even if the whole structure of the solid reaches a certain volume limit, even the diamond may be broken.
  • volumetric force the sum of the strength of the small volume of solid is much greater than the strength of the solid.
  • the millimeter is the most obvious high-strength solid structure of the same solid.
  • the invention relates to the application of millimeter strength on a split-displacement twist drill, the cutting edge strength of the split-diameter twist drill is increased by at least 50% on the millimeter scale, and the diameter shift is on the millimeter scale.
  • the average pressure on the cutting surface of a twist drill can be increased by more than 50%.
  • the utility model is characterized in that: the spiral cutting surface of the split-displacement twist drill is integrally or connected and integrally formed with a micro-strength stress extension platform having a millimeter strength, a side micro-edge having a millimeter strength, and a millimeter strength. Spiral micro-section, cutting micro-edge with millimeter strength and spiral micro-cutting edge with millimeter strength,
  • the spiral cutting surface of the split-displacement twist drill is provided with a spiral micro-cut surface having a millimeter intensity from a spiral cutting edge of the outer circumference of the split-diameter twist drill to a spiral cutting surface in the axial center direction
  • the width of the helical micro-section having a millimeter strength is greater than or equal to 0.6 mm and less than or equal to 10 mm;
  • the spiral micro-cut surface having a millimeter-strength disposed on the spiral cutting surface intersects the inner convex spiral cutting surface to form a micro-strength stress extension platform having a millimeter strength; the micro-strength stress extension platform having a millimeter strength
  • the height is greater than or equal to 0.15 mm and less than or equal to 6 mm;
  • spiral micro-cut surface having a millimeter strength intersects the helical minor cutting surface of the outer circumference to form a spiral micro-cutting edge having a millimeter strength
  • the spiral micro-cut surface having a millimeter strength intersects with the rear cutting surface to form a cutting micro-blade having a millimeter strength; the length of the cutting micro-blade having a millimeter strength is 0.6 mm or more and 10 mm or less;
  • the micro-strength stress extension platform having a millimeter strength intersects the rear cutting surface to form a side micro-blade having a millimeter strength; the length of the side micro-blade having a millimeter strength is 0.15 mm or more and 6 mm or less.
  • a split-diameter twist drill relating to a drilling tool for machining, comprising a tool shank and a tool head, the tool head being integrally provided with at least two spiral strips, and a surface facing each other in the cutting direction is formed as a spiral
  • the surface on the outer surface side of the spiral cutting surface in the rotation direction is a spiral auxiliary cutting surface
  • the spiral cutting surface and the spiral auxiliary cutting surface intersect to form a spiral cutting edge
  • the axial cutting end surface of the spiral cutting surface is formed as a surface.
  • the invention is applied to a millimeter-strength drill with a split-displacement twist drill, and the cutting edge strength of the split-diameter twist drill is increased by at least 50% on a millimeter scale, and the split diameter is shifted on the order of millimeters.
  • the average pressure on the cutting surface of the twist drill can be increased by more than 50%.
  • the utility model is characterized in that: on the split-displacement twist drill, integrally or connected and formed integrally, the following technical solutions are arranged, and the inner side of the spiral cutting surface of the split-shift twist drill is near the axial center, a spiral stepped center table having a millimeter strength disposed on the spiral cutting surface; the height of the spiral step center table having a millimeter strength is 0.15 mm or more and 10 mm or less;
  • the inner side of the spiral step center table having a millimeter intensity is arranged toward the rotation direction and is provided with a spiral step center plane; the radius of the spiral step center plane is less than or equal to one third of the radius of the split displacement twist drill;
  • the spiral step center table having a millimeter strength intersects the spiral step center plane having a millimeter strength to form a spiral center edge having a millimeter strength.
  • a split-diameter twist drill relating to a drilling tool for machining, comprising a tool shank and a tool head, the tool head being integrally provided with at least two spiral strips, and a surface facing each other in the cutting direction is formed as a spiral
  • the surface on the outer surface side of the spiral cutting surface in the rotation direction is a spiral auxiliary cutting surface
  • the spiral cutting surface and the spiral auxiliary cutting surface intersect to form a spiral cutting edge
  • the axial cutting end surface of the spiral cutting surface is formed as a surface.
  • the invention is applied to a millimeter-strength drill with a split-displacement twist drill, and the cutting edge strength of the split-diameter twist drill is increased by at least 50% on a millimeter scale, and the split diameter is shifted on the order of millimeters.
  • the average pressure on the cutting surface of the twist drill can be increased by more than 50%.
  • the utility model is characterized in that: on the split-displacement twist drill, integrally, or connected and formed integrally, the following technical solutions are arranged, and the spiral of the spiral cutting edge from the axial center to the outer circumference of the split-diameter twist drill is arranged. a cutting surface having a stepped depression having a millimeter-strength spiral dividing table; the height of the spiral dividing table having a millimeter strength is 0.15 mm or more and 10 mm or less;
  • the spiral cutting surface of the upper inner side of the spiral hole dividing table having the millimeter strength is a spiral hole cutting surface, and the width of the spiral hole cutting surface is greater than or equal to one third of the radius of the diameter shifting twist drill, less than or equal to Two-thirds of the radius of the split-shift twist drill;
  • the top of the spiral sub-bore having millimeter strength intersects the inner raised helical cutting face to form a helical slit having a millimeter strength.
  • the spiral step center surface or the spiral hole cutting surface or the spiral micro-cut surface having the millimeter strength is disposed in the axial direction of the spiral triangular groove;
  • the spiral stepped center surface or the spiral minute-cut cutting surface having a millimeter-strength or the spiral micro-cut surface having a millimeter-strength is axially disposed with a spiral trapezoidal groove.
  • the spiral stepped central table having a millimeter-strength of the split-shift twist drill intersects the rear cutting face to form a side micro-edge having a millimeter strength
  • spiral sub-aperture having a millimeter strength intersects the rear cutting face to form a side micro-edge having a millimeter strength
  • the length of the side micro-blade having a millimeter strength is 0.15 mm or more and 6 mm or less.
  • the spiral step center surface or the spiral hole-cutting surface or the spiral micro-cut surface having the millimeter-strength is axially disposed in a spiral groove shape.
  • the rear cutting faces on both sides of the split-shift twist drill are intersected at the axial center to form a chisel edge;
  • the chamfered sides of the chisel side of the split-shift twist drill are formed with a chamfered surface and a reduced chisel edge or a sharpened blade without a chisel edge.
  • the tool shank of the split-shifted twist drill and the spiral strip of the tool head are provided with cooling holes.
  • the split-shift twist drill is provided with at least one step from the center chisel edge in such a manner that the height of the rear cutting face in the side edge direction of the outer side is lowered.
  • the cutting edge of the split-shift twist drill is provided with at least one notch blade, and the rear cutting face is extended to form at least one groove.
  • the angle at which the outermost cutting edge of the split-shift twist drill intersects the helical minor cutting edge is an acute angle or a right angle, or an obtuse angle.
  • the twist drill with the diameter of 10.15 was used as the experiment, and the cobalt-containing high-speed steel of the same M35 was used, and the heat treatment was carried out in the same batch.
  • the drilling target was the forging and tempering gear finishing price. Drilling depth 35mm, blind hole, the twisting speed and the feeding amount of the common structure reach the limit, the split-diameter twist drill can also increase the speed by 25%, increase the feed rate by 25%, and improve the comprehensive drilling efficiency. More than double, the number of drilled holes is more than three times more than the twist drill of the ordinary structure.
  • FIG. 1 is a schematic view of a split-shift twist drill of a first embodiment of the present invention.
  • FIG. 2 is a schematic view of a split-shift twist drill of a second embodiment of the present invention.
  • FIG 3 is a schematic view of a split-shift twist drill of a third embodiment of the present invention.
  • FIG. 4 is a schematic view of a split-shift twist drill of a fourth embodiment of the present invention.
  • Fig. 5 is a schematic view showing a split-shift twist drill of a fifth embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a split-shift twist drill of a first embodiment of the present invention mainly relates to a drilling tool for machining, including a tool shank (not shown) and a tool head.
  • the cutter head 1 is integrally provided with at least two spiral strips 4, and a surface of each spiral strip 4 facing the cutting direction is formed as a spiral cutting surface 13, and a surface of the outer surface side of the spiral cutting surface 13 rearward in the rotational direction is
  • the spiral auxiliary cutting surface 8 has a spiral cutting edge formed by intersecting the helical cutting surface 13 and the helical minor cutting surface 8, and the surface of the spiral cutting surface 13 on the front end side of the axial cutting surface is formed as a rear cutting surface 5, and at least the rear cutting surfaces of the two sides intersect each other.
  • a chisel edge is formed, and chamfered faces 22 and chamfered edges 2 are formed at both ends of the chisel edge, and the spiral cutting face 13 and the rear cutting face 5 intersect to form a cutting edge 6, a helical minor cutting face 8 and a rear cutting face 5.
  • the intersection is formed with a side edge 7, and according to the same volume of the two solids, the surface area of the small volume of solid dispersed therein is larger than the surface area of the whole solid, and even if the whole structure of the solid reaches a certain volume limit, even the diamond may be broken. According to the volume of force In this case, the sum of the strengths of the small-volume solids is much greater than the strength of the solids in the whole.
  • the millimeter In the conventional physical state, the millimeter is the most obvious high-strength, ie, millimeter-strength.
  • the present invention is a split-diameter twist drill.
  • the cutting edge strength of the split-diameter twist drill is increased by at least 50% over the millimeter scale, and the average of the helical cutting surface 13 of the split-diameter twist drill on the millimeter scale
  • the pressure can be increased by more than 50%.
  • the spiral cutting face 13 of the split-shift twist drill is integrally or connected and integrally formed as a micro-strengthened stress extension table 20 having a millimeter strength, a side micro-blade 19 having a millimeter strength, and having a millimeter strength a spiral micro-cut surface 18, a cutting micro-blade 16 having a millimeter strength, and a spiral micro-cutting edge 17 having a millimeter strength,
  • the spiral cutting surface 13 of the split-shift twist drill is provided with a spiral having a millimeter strength from a spiral cutting edge of the outer peripheral edge of the split-diameter twist drill to a spiral cut surface 13 in the axial center direction a micro-cut surface 18; the width of the spiral micro-cut surface 18 having a millimeter strength is greater than or equal to 0.6 mm, less than or equal to 10 mm;
  • the spiral micro-cut surface 18 having a millimeter-strength disposed on the spiral cutting surface 13 intersects the inner convex spiral cutting surface 13 to form a micro-strength stress extension platform 20 having a millimeter strength; the micro-reinforcement with millimeter strength
  • the height of the stress extension platform 20 is 0.15 mm or more and 6 mm or less;
  • the spiral micro-cut surface 18 having a millimeter strength intersects the helical minor cutting surface of the outer circumference to form a spiral micro-cutting edge 17 having a millimeter strength;
  • the spiral micro-cut surface 18 having a millimeter intensity intersects with the rear cutting surface to form a cutting micro-blade 16 having a millimeter strength; the length of the cutting micro-blade 16 having a millimeter strength is 0.6 mm or more and 10 mm or less;
  • the micro-strength stress extension table 20 having a millimeter strength intersects the rear cutting surface to form a side micro-blade 19 having a millimeter strength; the length of the side micro-blade 19 having a millimeter-strength is 0.15 mm or more, and less than or equal to 6 Millimeter.
  • a spiral micro-cut surface 18 having a millimeter-intensity intersects the helical minor cutting surface 8 to form a spiral micro-cutting edge 17, and a micro-reinforcing stress extending table 20 having a millimeter-strength is formed between the adjacent micro-cut surface 18 having a millimeter-strength.
  • the micro-strength stress extension table 20 having the millimeter strength is provided to enhance the strength of the spiral micro-cut surface 18 having the millimeter strength, and has the millimeter strength.
  • the spiral micro-cut surface 18 itself is characterized by small area and small composite strength. The characteristic is that the same material is calculated according to its volume. The average surface intensity of one side surface area is greater than centimeter level, and the centimeter level is larger than decimeter level, 1 cubic centimeter.
  • the surface area of cubic millimeters is calculated by one tenth, so the millimeter-scale withstand pressure limit is much larger than the centimeter level, plus the force of the micro-strength stress extension table 20 of the spiral with millimeter strength, with support and reinforcement with millimeter strength
  • the effect of the spiral micro-cut surface 18 strength, and thus the setting on the same tool has a high strength and stability compared to ordinary reaming Drilling has the advantage of more durability and stability of the strength of the blade, so it has the advantage of high efficiency and higher drilling accuracy.
  • a chamfered surface 22 is formed by intersecting the rear cutting faces on both sides of the split-diameter twist drill, or a chamfered surface 22 is formed at the both ends of the chisel edge O, and the chamfered edge 2 is formed with the chamfering edge 2
  • the sharpened edge O which is later formed as a reduced chisel edge O or without the chisel edge O, greatly reduces the large resistance due to the excessive length of the chisel edge due to the reduction or elimination of the chisel edge.
  • the cutting edge 6 forms a centrifugally-conducting carrier, the helical cutting surface 13 and the adjacent spiral micro-strengthened stress extension table 16 and have a millimeter
  • the helical micro-cutting surface 18, the side micro-blade 19 and the cutting micro-blade 16 formed by the intersection of the intensity spiral micro-cut surface 18 and the rear cutting surface separate the cutting edge 6 and differentiate the conduction force, thereby reducing the overall cutting force.
  • the limit reduces the force acting on the cutting edge and the helical cutting edge where the outer spiral cutting face 13 intersects the rear cutting face, reduces the temperature of the tool head 1, and decomposes the force of the cutting edge of the outermost damage of the tool, so that the tool is used. Long life and high strength throughout the process.
  • the twist drill with a diameter of 10.5 was used as the experiment, and the cobalt-containing high-speed steel of the same M35 was used, and the heat treatment was carried out in the same batch.
  • the drilling target was the forging and tempering gear finishing price.
  • the drilling depth is 35mm
  • the blind micro-cut surface of the blind hole and the split-diameter twist drill is 1817 wide and 1.5mm
  • the micro-strength stress extension stand is 0.6mm high.
  • the split-diameter twist drill can also increase the rotational speed by 25%, increase the feed rate by 25%, and improve the comprehensive drilling efficiency by 0.56 times.
  • the number of holes and the diameter of the twist drill are more than three times larger than the twist drill of the ordinary structure.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the split-displacement twist drill of the second embodiment of the present invention is integrated with the first embodiment, and relates to a drilling tool for machining, including a cutter.
  • a shank (not shown) and a tool head 1
  • the cutter head 1 is integrally provided with at least two spiral strips 4, and a surface of each spiral strip 4 facing the cutting direction is formed as a spiral cutting surface 13 in the direction of rotation backward
  • the surface on the outer surface side of the spiral cutting surface 13 is a helical auxiliary cutting surface 8, and the spiral cutting surface 13 and the helical auxiliary cutting surface 8 intersect with each other to form a spiral cutting edge, and the surface of the spiral cutting surface 13 on the front end side of the axial cutting surface is formed as a rear cutting surface 5
  • At least the rear cutting faces of the two sides intersect to form a chisel edge 7, and the spiral cutting face 13 and the rear cutting face 5 intersect to form a cutting edge 6, and the helical minor cutting face 8 and the rear cutting face 5 intersect to form a side edge 7, which is
  • the millimeter The order of magnitude is the most obvious high strength, that is, millimeter strength.
  • the present invention is applied to a millimeter-strength drill with a split-displacement twist drill, and the cutting edge strength of the split-diameter twist drill is increased by at least 5% on a millimeter scale.
  • the average pressure on the cutting face of the split-diameter twist drill on the millimeter scale can be increased by more than 50%, and the inner side of the spiral cutting face 13 of the split-distance twist drill is close to the axial center.
  • a spiral step center table 10 having a millimeter-strength and a convex spiral step center surface 12 are provided, and a spiral step center table 10 having a millimeter-strength connection is provided on the spiral cutting surface 13, a spiral having a millimeter-strength
  • An angle between the stepped center stage 10 and the intersecting spiral step center surface 12 is formed by an angle of 90° or more, and the spiral step center stage 10 having a millimeter strength and the adjacent spiral cutting surface 13 intersecting to form an angle of greater than or equal to 90°, a spiral stepped center stage 10 having a millimeter strength intersecting the spiral stepped center plane 12 to form a spiral center edge 11, a spiral cutting surface 13, a spiral stepped center stage 10 having a
  • the inner side of the spiral cutting surface 13 of the split-shift twist drill is near the axial center, and the spiral cutting surface 13 is provided with a spiral step center table 10 having a millimeter strength; the height of the spiral step center table 10 having a millimeter strength is 0.15 mm or more and 10 mm or less;
  • the inner side of the spiral stepped center stage 10 having a millimeter-strength is arranged in a direction of rotation, and the spiral step center surface 12 is provided; the width of the spiral step center surface 12 is less than or equal to the three-point radius of the split-distance twist drill one;
  • the spiral stepped center stage 10 having a millimeter strength intersects the spiral step center plane 12 having a millimeter strength to form a spiral center edge 11 having a millimeter strength.
  • the above setting is equivalent to first drilling the process hole in the drilling process and then drilling. Since it is set on the same tool, it has high stability and has a more stable advantage than the ordinary reamer. The advantages of high efficiency and drilling accuracy are also higher.
  • the twist drill with the diameter of 10.15 was used as the experiment, and the cobalt-containing high-speed steel of the same M35 was used, and the heat treatment was carried out in the same batch.
  • the drilling target was the forging and tempering gear finishing price.
  • the drilling depth is 35mm
  • the blind cutting hole of the blind hole and the split diameter shifting drill is 13mm wide
  • the spiral step center table 10 is 0.6mm high.
  • the diameter shift twist drill can also increase the rotation speed by 25%, increase the feed rate by 25%, the comprehensive drilling efficiency by 0.56 times, the conventional structure of the twist drill drilling 312, the split diameter shift twist drill 798, the drilling The number-division-shifted twist drill more than doubles the twist of the conventional structure.
  • the use efficiency of the twist drill is very high, but the service life is obviously not as good as that of the outer spiral micro-section 18 and the micro-strength stress extension 20, but the structure has a longer service life and higher efficiency than the ordinary twist drill. Effect.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the split-displacement twist drill of the third embodiment of the present invention is comprehensively applied on the basis of the first to second embodiments, mainly involving drilling for machining.
  • the tool comprising a tool shank (not shown) and a tool head 1, the cutter head 1 is integrally provided with at least two spiral strips 4, and a surface of each spiral strip 4 facing the cutting direction is formed as a spiral cutting surface 13, the direction of rotation
  • the surface on the outer surface side of the upward spiral cutting surface 13 is a helical auxiliary cutting surface 8, and the spiral cutting surface 13 and the helical auxiliary cutting surface 8 intersect with each other to form a spiral cutting edge, and the surface of the spiral cutting surface 13 on the front end side in the axial direction is formed as
  • the face 24 is intersected with the spiral hole dividing table 23 having a millimeter strength to form a spiral micro cutting edge 17, and the spiral hole dividing face 24 and the spiral dividing hole table 23 having the millimeter strength intersect with the rear cutting face 5 to form the cutting edge 6 and the side Micro blade 19.
  • the following technical solutions are provided, on the helical cutting face 13 of the helical cutting edge of the split-diameter twist drill from the axial center to the outer periphery a stepped depression having a millimeter-strength spiral sub-bore table 23; the height of the spiral-divided stage 23 having a millimeter-strength is 0.15 mm or more and 10 mm or less;
  • the upper inner convex spiral cutting surface 13 of the millimeter-strength spiral sub-stage 23 is a spiral splitting cutting surface 24, and the spiral splitting cutting surface 24 has a width greater than or equal to a three-thirds of the radius of the split-distance twist drill. First, less than or equal to two-thirds of the radius of the split-shift twist drill;
  • the top of the spiral sub-bore table 23 having a millimeter strength intersects the inner raised spiral cutting face 13 to form a helical slitting edge 26 having a millimeter strength.
  • the twist drill with a diameter of 10.5 was used as the experiment, and the cobalt-containing high-speed steel of the same M35 was used, and the heat treatment was carried out in the same batch.
  • the drilling target was the forging and tempering gear finishing price.
  • the drilling depth is 35mm
  • the blind hole the split-diameter twist drill has a spiral hole-cutting surface 24 width of 2.5mm, and the spiral hole-distributing table 23 is 0.8mm high.
  • the split-diameter twist drill can also increase the rotational speed by 20%, increase the feed rate by 20%, and improve the comprehensive drilling efficiency by 0.44 times.
  • the number of drilled holes is more than twice that of the conventionally-structured twist drill than the split-diameter twist drill.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the split-displacement twist drill of the fourth embodiment of the present invention is comprehensively applied on the basis of the first to third embodiments, mainly involving drilling for machining.
  • the tool comprising a tool shank (not shown) and a tool head 1, the cutter head 1 is integrally provided with at least two spiral strips 4, and a surface of each spiral strip 4 facing the cutting direction is formed as a spiral cutting surface 13, the direction of rotation
  • the surface on the outer surface side of the upward spiral cutting surface 13 is a helical auxiliary cutting surface 8, and the spiral cutting surface 13 and the helical auxiliary cutting surface 8 intersect with each other to form a spiral cutting edge, and the surface of the spiral cutting surface 13 on the front end side in the axial direction is formed as
  • the connection that has been established has The spiral step center table 10 of strength, the spiral step center table 10 having a millimeter strength and the connected spiral step center surface 12 form an angle of 90° or more, the spiral step center surface 12 and the spiral step center table having the millimeter intensity 10 intersecting to form a spiral micro-cutting edge 17; or at the outer end of the helical cutting face 13 of the split-displacement twist drill close to the helical cutting edge portion, the recessed micro-reinforcing stress extension platform with milli-strength provided with micro-strengthening technology 20 and a spiral micro-section 18 having a millimeter-strength, a micro-strengthened stress extension 20 having a millimeter-strength and an angle of greater than or equal to 90° formed between
  • the micro-strength stress extension table 20 having the millimeter strength is provided to enhance the strength of the spiral micro-cut surface 18 having the millimeter strength, and has the millimeter strength.
  • the spiral micro-cut surface 18 itself has a small and strong composite area, and the force of the micro-strength stress extension table 20 having a millimeter-strength has the effect of supporting and reinforcing the strength of the spiral micro-cut surface 18 having a millimeter-strength. Therefore, the setting on the same tool has high strength and stability, and has the advantages of more durability and stability of the strength of the edge than the ordinary reamer, so it has the advantage of high efficiency and higher drilling accuracy. .
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the embodiment of the present invention performs comprehensive selective use on the basis of the first-fourth embodiment, and a concave surface is formed on the cutting edge 6.
  • a mouth edge 29, the notch edge 29 is formed with a groove 26 extending toward the rear cutting face; or one or more steps are formed on the rear cutting face from the vicinity of the center of the tool head 1 to the outer side edge with a gradually decreasing height That is, the boss 27, the rear cutting face 5 intersects with the boss 27 to form a side edge 7, and the boss 27 intersects the spiral cutting face 13 to form a vertical edge 28; or at least one stepped rear cutting face At least one notch edge 29 extends toward the rear cutting face 5 to form at least one groove 30;
  • the twist drill with the diameter of 10.15 was used as the experiment, and the cobalt-containing high-speed steel of the same M35 was used, and the heat treatment was carried out in the same batch.
  • the drilling target was the forging and tempering gear finishing price.
  • the notch edge 29 is 1.3mm wide.
  • the split-diameter twist drill can also increase the rotation speed by 35%, increase the feed rate by 35%, and comprehensive drilling efficiency. The increase is 0.8225 times.
  • the transverse edge O formed by the intersection of the rear cutting faces on both sides is comprehensively selectively applied, and the chamfered surface 22 and the chamfered edge 2 are formed at both ends of the chamfering, and the original transverse edge O is formed. After chamfering, it is formed as a reduced chisel edge O or a sharp edge O without a chisel edge O, which greatly reduces the large resistance due to the excessive length of the chisel edge due to the reduction or elimination of the chisel edge.
  • the cutter of the present invention may have a plurality of spiral strips 4, and the structure of the embodiment as described above and the like may be employed for each of the spiral strips 4. a combination of forms.

Abstract

一种分径移位麻花钻，主要涉及用于机械加工的钻孔刀具，包括刀具柄和刀具头（1），该种刀具稳定性强，散热效率高，寿命长，且在钻削加工时容易定位，在材质相同的情况下，在分径移位麻花钻进行具有毫米强度的应用，在毫米量级上分径移位麻花钻的强度同比普通结构的麻花钻至少提高百分之五十以上，在毫米量级的分径移位麻花钻切削面上平均承受的压强可提高百分之五十以上。

Description

分径移位麻花钻 技术领域：
本发明涉及一种分径移位麻花钻，该分径移位麻花钻用于机械加工的钻铣工艺及钳工维修中，新的机械加工理论认为分段即阶梯状切削刃切削效率高，然而当阶梯状切削刃逐渐延长后就会发现其效果明显下降直至消失，因此该理论仍然不是真正正确的理论。
背景技术：
目前，机械加工中使用的钻孔刀具由横刃，切削刃，螺旋切削刃，侧刃构成，切削刃在一个螺旋切削面上，呈单一的同位切削结构，切削刃在旋转切削的离心力传导范围内，切削刃同时受到旋转切削力和中心向外的传导力，在双力作用下切削刃和螺旋切削刃相交处的刃口总是极易损坏，现有孔加工刀具在钻孔时由于结构并不绝对平衡而出现摆动现象，单纯靠螺旋切削面稳定刀具造成螺旋切削面和螺旋切削刃损坏，人们普遍的认识是表面越光滑强度越高，新的理论则是有微小间隙的面强度更高，都没有揭露物质的本质结构特性，因此，现有孔加工刀具效率低，易损坏，稳定性差，钻孔精度差。
发明内容：
本发明就是鉴于上述的问题而提出的，以提供一种分径移位麻花钻为目的，该种刀具具有阻断传导力的功能，散热效率高，强度大，寿命长，且在钻削加工时容易定位，钻孔精度高，人们普遍的认识是表面越光滑强度越高，最近几年的新的理论则是有微小间隙的面强度更高，都没有揭露物质的本质结构特性，在两个固体体积相同的情况下，其中分散成的小体积的固体的表面积大于整体的固体的表面积，固体的整体结构达到一定体积极限时即使是金刚石也会碎裂，按体积受力的情况下小体积的固体受力强度之和远大于整体的固体的受力强度，经过实验验证在常规物理状态下的切削工具上，毫米量级有最明显的高强度特性即毫米强度，本发明是在分径移位麻花钻进行具有毫米强度的应用。
为达到上述目的，本发明采用下述技术方案：
分径移位麻花钻，涉及用于机械加工的钻孔刀具，包括刀具柄和刀具头，刀具头一体地设置有至少两个螺旋条，在每个螺旋条的朝向切削方向的面形成为螺旋切削面，旋转方向上向后的螺旋切削面外面侧的面为螺旋副切削面，螺旋切削面与螺旋副切削面相交形成有螺旋切削刃，螺旋切削面的轴向前端背面侧的面形成为后切削面，至少两侧的后切削面相交形成有横刃，螺旋切削面与后切削面相交形成有切削刃，螺旋副切削面与后切削面相交形成有侧刃，
在人们日常接触的环境下，固体的体积极限受温度和地球引力的影响，极限体积相对要小很多，当固体体积在减小的情况下其强度却在适当的增强，其中毫米强度是比较突出的例子，根据两个固体体积相同的情况下，其中分散成小体积的固体的表面积之和大于等量整体的固体的表面积，固体的整体结构达到一定体积极限时即使是金刚石也会碎裂，按体积受力的情况下小体积的固体受力强度之 和远大于整体的固体的受力强度，在常规物理状态下，毫米量级是同种固体最明显的高强度的固体结构，
本发明是在分径移位麻花钻上进行具有毫米强度的应用，在毫米量级上分径移位麻花钻的切削刃强度至少提高百分之五十以上，在毫米量级上分径移位麻花钻的切削面上平均承受的压强可提高百分之五十以上，
其特征在于：所述的分径移位麻花钻的螺旋切削面上，一体地或连接并形成为一体地进行具有毫米强度的微强化应力延展台、具有毫米强度的侧微刃、具有毫米强度的螺旋微切面、具有毫米强度的切削微刃和具有毫米强度的螺旋微切刃的设置，
所述的分径移位麻花钻的螺旋切削面上，从分径移位麻花钻的外周缘的螺旋切削刃开始向轴向中心方向的螺旋切削面上凹陷的设置具有毫米强度的螺旋微切面；所述的具有毫米强度的螺旋微切面的宽度为大于等于0.6毫米，小于等于10毫米；
所述的螺旋切削面上凹陷设置的具有毫米强度的螺旋微切面与内侧凸起的螺旋切削面相交形成具有毫米强度的微强化应力延展台；所述的具有毫米强度的微强化应力延展台的高度为大于等于0.15毫米，小于等于6毫米；
所述的具有毫米强度的螺旋微切面与外周缘的螺旋副切削面相交形成具有毫米强度的螺旋微切刃；
所述的具有毫米强度的螺旋微切面与后切削面相交形成具有毫米强度的切削微刃；所述的具有毫米强度的切削微刃的长度为大于等于0.6毫米，小于等于10毫米；
所述的具有毫米强度的微强化应力延展台与后切削面相交形成具有毫米强度的侧微刃；所述的具有毫米强度的侧微刃的长度为大于等于0.15毫米，小于等于6毫米。
分径移位麻花钻，涉及用于机械加工的钻孔刀具，包括刀具柄和刀具头，刀具头一体地设置有至少两个螺旋条，在每个螺旋条的朝向切削方向的面形成为螺旋切削面，旋转方向上向后的螺旋切削面外面侧的面为螺旋副切削面，螺旋切削面与螺旋副切削面相交形成有螺旋切削刃，螺旋切削面的轴向前端背面侧的面形成为后切削面，至少两侧的后切削面相交形成有横刃，螺旋切削面与后切削面相交形成有切削刃，螺旋副切削面与后切削面相交形成有侧刃，
本发明是在分径移位麻花钻进行具有毫米强度的应用，在毫米量级上分径移位麻花钻的切削刃强度至少提高百分之五十以上，在毫米量级上分径移位麻花钻的切削面上平均承受的压强可提高百分之五十以上，
其特征在于：在分径移位麻花钻上，一体地，或连接并形成为一体地进行以下技术方案的设置，在该分径移位麻花钻的螺旋切削面的内侧靠近轴向中心附近，螺旋切削面上立起的设置具有毫米强度的螺旋阶梯中心台；所述的具有毫米强度的螺旋阶梯中心台的高度为大于等于0.15毫米，小于等于10毫米；
所述的具有毫米强度的螺旋阶梯中心台的内侧朝向旋转方向上凸起的设置螺旋阶梯中心面；所述的螺旋阶梯中心面的半径小于等于分径移位麻花钻半径的三分之一；
所述的具有毫米强度的螺旋阶梯中心台与具有毫米强度的螺旋阶梯中心面相交形成有具有毫米强度的螺旋中心刃。
分径移位麻花钻，涉及用于机械加工的钻孔刀具，包括刀具柄和刀具头，刀具头一体地设置有至少两个螺旋条，在每个螺旋条的朝向切削方向的面形成为螺旋切削面，旋转方向上向后的螺旋切削面外面侧的面为螺旋副切削面，螺旋切削面与螺旋副切削面相交形成有螺旋切削刃，螺旋切削面的轴向前端背面侧的面形成为后切削面，至少两侧的后切削面相交形成有横刃，螺旋切削面与后切削面相交形成有切削刃，螺旋副切削面与后切削面相交形成有侧刃，
本发明是在分径移位麻花钻进行具有毫米强度的应用，在毫米量级上分径移位麻花钻的切削刃强度至少提高百分之五十以上，在毫米量级上分径移位麻花钻的切削面上平均承受的压强可提高百分之五十以上，
其特征在于：在分径移位麻花钻上，一体地，或连接并形成为一体地进行以下技术方案的设置，在分径移位麻花钻从轴向中心向外周缘的螺旋切削刃的螺旋切削面上，阶梯状凹陷的设置具有毫米强度的螺旋分孔台；所述具有毫米强度的螺旋分孔台的高度为大于等于0.15毫米，小于等于10毫米；
所述具有毫米强度的螺旋分孔台的上部内侧凸起的螺旋切削面为螺旋分孔切削面，螺旋分孔切削面的宽度大于等于分径移位麻花钻半径的三分之一，小于等于分径移位麻花钻半径的三分之二；
所述具有毫米强度的螺旋分孔台的顶部与内侧凸起的螺旋切削面相交形成有具有毫米强度的螺旋分切刃。
优选地，所述的螺旋阶梯中心面或螺旋分孔切削面或具有毫米强度的螺旋微切面上沿轴向设置螺旋三角槽；
优选地，所述的具有毫米强度的螺旋阶梯中心面或螺旋分孔切削面或具有毫米强度的螺旋微切面上沿轴向设置螺旋梯形槽。
优选地，所述的分径移位麻花钻的具有毫米强度的螺旋阶梯中心台与后切削面相交形成具有毫米强度的侧微刃；
或所述的具有毫米强度的螺旋分孔台与后切削面相交形成具有毫米强度的侧微刃；
所述的具有毫米强度的侧微刃的长度为大于等于0.15毫米，小于等于6毫米。
优选地，所述的螺旋阶梯中心面或螺旋分孔切削面或具有毫米强度的螺旋微切面上沿轴向设置成螺旋沟槽状。
优选地，所述的分径移位麻花钻两侧的后切削面在轴向中心相交形成有横刃；
或所述的分径移位麻花钻的横刃的两侧倒角形成有倒角面和减小的横刃或 无横刃的尖刃。
优选地，所述的分径移位麻花钻的刀具柄和刀具头的螺旋条中设置有冷却孔。
优选地，所述的分径移位麻花钻从中心横刃开始以向外侧的侧刃方向的后切削面上高度降低的方式设置至少一级台阶。
优选地，所述的分径移位麻花钻的切削刃上设置有至少一个凹口刃，向后切削面延伸形成有至少一个凹槽。
优选地，在所述的分径移位麻花钻最外侧的切削刃与螺旋副切削刃相交的夹角为锐角或直角，或钝角。
有益效果：
在钻床上进行的对比实验中，以直径10.15的麻花钻为实验，同为M35的含钴高速钢，同时热处理，同批次生产，钻孔对象为锻打调质的齿轮精车加工价，钻孔深度35mm，盲孔，普通结构的麻花钻转速和进刀量达到极限的情况下，分径移位麻花钻还可以提高转速25％，提高进刀量25％，综合钻孔效率提高一倍以上，钻孔数量分径移位麻花钻比普通结构的麻花钻多增加三倍多。
附图说明：
本发明的技术方案和优点将通过结合附图进行详细的说明，在该附图中：
图1是本发明的第一实施方式的分径移位麻花钻的示意图。
图2是本发明的第二实施方式的分径移位麻花钻的示意图。
图3是本发明的第三实施方式的分径移位麻花钻的示意图。
图4是本发明的第四实施方式的分径移位麻花钻的示意图。
图5是本发明的第五实施方式的分径移位麻花钻的示意图。
具体实施方式：
下面将结合附图详细地说明本发明的分径移位麻花钻的优选实施方式，在实施方式1-5中主要以具有两个螺旋条的刀具为例进行说明。
实施方式1：
如图1所示，本发明的第一实施方式的分径移位麻花钻，分径移位麻花钻，主要涉及用于机械加工的钻孔刀具，包括刀具柄(未示出)和刀具头1，刀具头1一体地设置有至少两个螺旋条4，在每个螺旋条4的朝向切削方向的面形成为螺旋切削面13，旋转方向上向后的螺旋切削面13外面侧的面为螺旋副切削面8，螺旋切削面13与螺旋副切削面8相交形成有螺旋切削刃，螺旋切削面13的轴向前端背面侧的面形成为后切削面5，至少两侧的后切削面相交形成有横刃，横刃的两端倒角形成有倒角面22和倒角刃2，螺旋切削面13与后切削面5相交形成有切削刃6，螺旋副切削面8与后切削面5相交形成有侧刃7，根据两个固体体积相同的情况下，其中分散成的小体积的固体的表面积大于整体的固体的表面积，固体的整体结构达到一定体积极限时即使是金刚石也会碎裂，按体积受力的情况下小体积的固体受力强度之和远大于整体的固体的受力强度，在常规物理状态下， 毫米量级是最明显的高强度即毫米强度，本发明是在分径移位麻花钻进行具有毫米强度的应用，在毫米量级上分径移位麻花钻的切削刃强度至少提高百分之五十以上，在毫米量级上分径移位麻花钻的螺旋切削面13上平均承受的压强可提高百分之五十以上，
所述的分径移位麻花钻的螺旋切削面13上，一体地或连接并形成为一体地进行具有毫米强度的微强化应力延展台20、具有毫米强度的侧微刃19、具有毫米强度的螺旋微切面18、具有毫米强度的切削微刃16和具有毫米强度的螺旋微切刃17的设置，
所述的分径移位麻花钻的螺旋切削面13上，从分径移位麻花钻的外周缘的螺旋切削刃开始向轴向中心方向的螺旋切削面13上凹陷的设置具有毫米强度的螺旋微切面18；所述的具有毫米强度的螺旋微切面18的宽度为大于等于0.6毫米，小于等于10毫米；
所述的螺旋切削面13上凹陷设置的具有毫米强度的螺旋微切面18与内侧凸起的螺旋切削面13相交形成具有毫米强度的微强化应力延展台20；所述的具有毫米强度的微强化应力延展台20的高度为大于等于0.15毫米，小于等于6毫米；
所述的具有毫米强度的螺旋微切面18与外周缘的螺旋副切削面相交形成具有毫米强度的螺旋微切刃17；
所述的具有毫米强度的螺旋微切面18与后切削面相交形成具有毫米强度的切削微刃16；所述的具有毫米强度的切削微刃16的长度为大于等于0.6毫米，小于等于10毫米；
所述的具有毫米强度的微强化应力延展台20与后切削面相交形成具有毫米强度的侧微刃19；所述的具有毫米强度的侧微刃19的长度为大于等于0.15毫米，小于等于6毫米。
在该分径移位麻花钻的螺旋切削面13上靠近螺旋副切削面8的部分，凹陷的设置有微强化技术的具有毫米强度的微强化应力延展台20和具有毫米强度的螺旋微切面18，具有毫米强度的螺旋微切面18与螺旋副切削面8相交形成有螺旋微切刃17，具有毫米强度的微强化应力延展台20与相邻的的具有毫米强度的螺旋微切面18间形成有大于等于90°的夹角，具有毫米强度的微强化应力延展台20和具有毫米强度的螺旋微切面18延伸至前端与后切削面5相交形成有侧微刃19和切削微刃16。
通过上述设置相当于在钻孔过程中先打了工艺孔再进行钻削，由于设置了具有毫米强度的微强化应力延展台20增强了具有毫米强度的螺旋微切面18的强度，而具有毫米强度的螺旋微切面18本身由于面积变小复合小而强的特点，特点是相同的材质按其体积计算其一侧表面积毫米级的平均强度大于厘米级，而厘米级大于分米级，1立方厘米＝1千立方毫米，而面积则是1立方厘米的表面积＝6百平方毫米的表面积，1千个立方毫米的表面积是6千平方毫米，按体积平均施加的力在1立方厘米是1千个立方毫米的表面积计算的十分之一，因此毫米 级承受压强极限远大于远大于厘米级，再加上螺旋具有毫米强度的微强化应力延展台20所延伸的力，具有支撑和加强具有毫米强度的螺旋微切面18强度的效果，因而是在同一刀具上的设置具有很高的强度和稳定性，相比普通扩孔钻具有更加耐用和强度刃度的稳定性的优势，因此具备高效率的优势，钻孔精度也更高。
通过在分径移位麻花钻两侧的后切削面相交形成有横刃O，或在横刃O的两端倒角形成有倒角面22，形成有倒角刃2原横刃O倒角后形成为缩小的横刃O或无横刃O的尖刃O，由于横刃的减小或消除极大地降低了由于横刃过长所产生的巨大阻力。
根据上述结构，由于钻孔切削是圆周运动，在圆周运动的过程中产生了离心力，切削刃6形成了离心力的传导载体，螺旋切削面13与相邻的螺旋微强化应力延展台16和具有毫米强度的螺旋微切面18与后切削面相交形成的螺旋微切刃17、侧微刃19和切削微刃16将切削刃6分开，并将传导力进行了分化，减小了整体切削力，最大限度的减小了外侧螺旋切削面13与后切削面相交的切削刃和螺旋切削刃的受力作用，降低刀具头1温度，分解刀具最易损坏的外端的切削刃的受力，使刀具使用寿命延长，并在加工过程中一直保持高强度。
在钻床上进行的对比实验中，以直径10.5的麻花钻为实验，同为M35的含钴高速钢，同时热处理，同批次生产，钻孔对象为锻打调质的齿轮精车加工价，钻孔深度35mm，盲孔，分径移位麻花钻的螺旋微切面1817宽1.5mm，微强化应力延展台2016高0.6mm，在普通结构的麻花钻转速和进刀量达到极限的情况下，分径移位麻花钻还可以提高转速25％，提高进刀量25％，综合钻孔效率提高0.56倍，普通结构的麻花钻钻孔312个，分径移位麻花钻钻孔1308个，钻孔数量分径移位麻花钻比普通结构的麻花钻多增加三倍多。
根据上述实验结果麻花钻的使用效率和使用寿命明显大幅度提高，证明该种结构是延长使用寿命和提高效率的有效方式。
实施方式2：
如图2所示，本发明的第二实施方式的分径移位麻花钻，本发明的实施方式实在第一实施方式的基础上进行综合运用，涉及用于机械加工的钻孔刀具，包括刀具柄(未示出)和刀具头1，刀具头1一体地设置有至少两个螺旋条4，在每个螺旋条4的朝向切削方向的面形成为螺旋切削面13，旋转方向上向后的螺旋切削面13外面侧的面为螺旋副切削面8，螺旋切削面13与螺旋副切削面8相交形成有螺旋切削刃，螺旋切削面13的轴向前端背面侧的面形成为后切削面5，至少两侧的后切削面相交形成有横刃7，螺旋切削面13与后切削面5相交形成有切削刃6，螺旋副切削面8与后切削面5相交形成有侧刃7，在分径移位麻花钻上，一体地，或连接并形成为一体地进行以下技术方案的设置，根据两个固体体积相同的情况下，其中分散成的小体积的固体的表面积大于整体的固体的表面积，固体的整体 结构达到一定体积极限时即使是金刚石也会碎裂，按体积受力的情况下小体积的固体受力强度之和远大于整体的固体的受力强度，在常规物理状态下，毫米量级是最明显的高强度即毫米强度，本发明是在分径移位麻花钻进行具有毫米强度的应用，在毫米量级上分径移位麻花钻的切削刃强度至少提高百分之五十以上，在毫米量级上分径移位麻花钻的切削面上平均承受的压强可提高百分之五十以上，在该分径移位麻花钻的螺旋切削面13的内侧靠近轴向中心附近，立起的设置具有毫米强度的螺旋阶梯中心台10和凸起的设置螺旋阶梯中心面12，螺旋切削面13上立起的连接具有毫米强度的螺旋阶梯中心台10，具有毫米强度的螺旋阶梯中心台10与相交的螺旋阶梯中心面12间形成有大于等于90°的夹角，具有毫米强度的螺旋阶梯中心台10与相邻的螺旋切削面13相交形成有大于等于90°的夹角，具有毫米强度的螺旋阶梯中心台10与螺旋阶梯中心面12相交形成有螺旋中心刃11，螺旋切削面13、具有毫米强度的螺旋阶梯中心台10和螺旋阶梯中心面12沿轴向延伸之前端与后切削面5相交形成有侧微刃19和切削中刃3。
在分径移位麻花钻上，一体地，或连接并形成为一体地进行以下技术方案的设置，在该分径移位麻花钻的螺旋切削面13的内侧靠近轴向中心附近，螺旋切削面13上立起的设置具有毫米强度的螺旋阶梯中心台10；所述的具有毫米强度的螺旋阶梯中心台10的高度为大于等于0.15毫米，小于等于10毫米；
所述的具有毫米强度的螺旋阶梯中心台10的内侧朝向旋转方向上凸起的设置螺旋阶梯中心面12；所述的螺旋阶梯中心面12的宽度小于等于分径移位麻花钻半径的三分之一；
所述的具有毫米强度的螺旋阶梯中心台10与具有毫米强度的螺旋阶梯中心面12相交形成有具有毫米强度的螺旋中心刃11。
通过上述设置相当于在钻孔过程中先打了工艺孔再进行钻削，由于是在同一刀具上的设置因此有很高的稳定性，相比普通扩孔钻具有更加稳定的优势，因此具备高效率的优势，钻孔精度也更高。
在钻床上进行的对比实验中，以直径10.15的麻花钻为实验，同为M35的含钴高速钢，同时热处理，同批次生产，钻孔对象为锻打调质的齿轮精车加工价，钻孔深度35mm，盲孔，分径移位麻花钻的螺旋切削面13宽3.5mm，螺旋阶梯中心台10高0.6mm，在普通结构的麻花钻转速和进刀量达到极限的情况下，分径移位麻花钻还可以提高转速25％，提高进刀量25％，综合钻孔效率提高0.56倍，普通结构的麻花钻钻孔312个，分径移位麻花钻钻孔798个，钻孔数量比分径移位麻花钻比普通结构的麻花钻多增加一倍多。
根据上述实验结果麻花钻的使用效率很高但是使用寿命明显不如外侧设置螺旋微切面18和微强化应力延展台20的效果更好，但是该种结构比普通麻花钻还是有延长使用寿命和提高效率的效果。
实施方式3：
如图3所示，本发明的第三实施方式的分径移位麻花钻，本发明的实施方式实在第一——二实施方式的基础上进行综合运用，主要涉及用于机械加工的钻孔刀具，包括刀具柄(未示出)和刀具头1，刀具头1一体地设置有至少两个螺旋条4，在每个螺旋条4的朝向切削方向的面形成为螺旋切削面13，旋转方向上向后的螺旋切削面13外面侧的面为螺旋副切削面8，螺旋切削面13与螺旋副切削面8相交形成有螺旋切削刃，螺旋切削面13的轴向前端背面侧的面形成为后切削面5，至少两侧的后切削面5相交形成有横刃7，螺旋切削面13与后切削面5相交形成有切削刃6，螺旋副切削面8与后切削面5相交形成有侧刃7，在该分径移位麻花钻的螺旋切削面13上从轴向中心附近到螺旋副切削面8的半径中心附近及以该半径的中心或附近沿螺旋切削刃平行延伸的螺旋线上，形成凸起设置的具有毫米强度的螺旋分孔台23和螺旋分孔切削面24，螺旋切削面13上立起的连接具有毫米强度的螺旋分孔台23，具有毫米强度的螺旋分孔台23与相邻的螺旋分孔切削面24间形成有大于等于90°的夹角，具有毫米强度的螺旋分孔台23与内侧凸起相邻的螺旋切削面13相交形成有大于等于90°的夹角，螺旋分孔切削面24与具有毫米强度的螺旋分孔台23相交形成有螺旋微切刃17，螺旋分孔切削面24和具有毫米强度的螺旋分孔台23与后切削面5相交形成有切削刃6和侧微刃19。
在分径移位麻花钻上，一体地，或连接并形成为一体地进行以下技术方案的设置，在分径移位麻花钻从轴向中心向外周缘的螺旋切削刃的螺旋切削面13上，阶梯状凹陷的设置具有毫米强度的螺旋分孔台23；所述具有毫米强度的螺旋分孔台23的高度为大于等于0.15毫米，小于等于10毫米；
所述具有毫米强度的螺旋分孔台23的上部内侧凸起的螺旋切削面13为螺旋分孔切削面24，螺旋分孔切削面24的宽度大于等于分径移位麻花钻半径的三分之一，小于等于分径移位麻花钻半径的三分之二；
所述具有毫米强度的螺旋分孔台23的顶部与内侧凸起的螺旋切削面13相交形成有具有毫米强度的螺旋分切刃26。
在钻床上进行的对比实验中，以直径10.5的麻花钻为实验，同为M35的含钴高速钢，同时热处理，同批次生产，钻孔对象为锻打调质的齿轮精车加工价，钻孔深度35mm，盲孔，分径移位麻花钻的螺旋分孔切削面24宽2.5mm，螺旋分孔台23高0.8mm，在普通结构的麻花钻转速和进刀量达到极限的情况下，分径移位麻花钻还可以提高转速20％，提高进刀量20％，综合钻孔效率提高0.44倍，普通结构的麻花钻钻孔312个，分径移位麻花钻钻孔976个，钻孔数量比分径移位麻花钻比普通结构的麻花钻多增加二倍多。
实施方式4：
如图4所示，本发明的第四实施方式的分径移位麻花钻，本发明的实施方式实在第一——三实施方式的基础上进行综合运用，主要涉及用于机械加工的钻孔刀具，包括刀具柄(未示出)和刀具头1，刀具头1一体地设置有至少两个螺旋条4， 在每个螺旋条4的朝向切削方向的面形成为螺旋切削面13，旋转方向上向后的螺旋切削面13外面侧的面为螺旋副切削面8，螺旋切削面13与螺旋副切削面8相交形成有螺旋切削刃，螺旋切削面13的轴向前端背面侧的面形成为后切削面5，至少两侧的后切削面5相交形成有横刃7，螺旋切削面13与后切削面5相交形成有切削刃6，螺旋副切削面8与后切削面5相交形成有侧刃7，在该分径移位麻花钻的螺旋切削面13的内侧靠近轴向中心附近，凸起的设置有螺旋阶梯中心面12和具有毫米强度的螺旋阶梯中心台10，螺旋切削面13上立起的连接具有毫米强度的螺旋阶梯中心台10，具有毫米强度的螺旋阶梯中心台10与连接的螺旋阶梯中心面12间形成有大于等于90°的夹角，螺旋阶梯中心面12和具有毫米强度的螺旋阶梯中心台10相交形成有螺旋微切刃17；或在该分径移位麻花钻的螺旋切削面13的外端靠近螺旋切削刃部分，凹陷的设置有微强化技术的具有毫米强度的微强化应力延展台20和具有毫米强度的螺旋微切面18，具有毫米强度的微强化应力延展台20与连接的具有毫米强度的螺旋微切面18间形成有大于或等于90°的夹角，具有毫米强度的微强化应力延展台20与内侧凸起的螺旋切削面13相交形成有螺旋微切刃17，具有毫米强度的微强化应力延展台20和具有毫米强度的螺旋微切面18延伸至前端与后切削面5相交形成有螺旋微切刃17和侧微刃19；或在该分径移位麻花钻的螺旋切削面13上从轴向中心附近到螺旋副切削面8的半径的中心附近及以该半径的中心附近沿螺旋切削刃平行延伸的螺旋线上，形成凸起设置的具有毫米强度的螺旋分孔台23和螺旋分孔切削面24，螺旋切削面13上立起的连接具有毫米强度的螺旋分孔台23，具有毫米强度的螺旋分孔台23与连接的螺旋分孔切削面24间形成有大于等于90°的夹角，螺旋分孔切削面24与具有毫米强度的螺旋分孔台23相交形成有螺旋微切刃17，螺旋切削面13、具有毫米强度的螺旋阶梯中心台10和螺旋阶梯中心面12与后切削面5相交形成有侧微刃19和切削微刃16；或螺旋切削面13、具有毫米强度的微强化应力延展台20和具有毫米强度的螺旋微切面18与后切削面5相交形成有侧微刃19和螺旋微切刃17；或至少一级具有毫米强度的螺旋分孔台23和至少一级螺旋分孔切削面24沿轴向延伸与后切削面5相交形成有侧微刃19和切削微刃16。
通过上述设置相当于在钻孔过程中先打了工艺孔再进行钻削，由于设置了具有毫米强度的微强化应力延展台20增强了具有毫米强度的螺旋微切面18的强度，而具有毫米强度的螺旋微切面18本身由于面积变小复合小而强的特点，再加上具有毫米强度的微强化应力延展台20所延伸的力，具有支撑和加强具有毫米强度的螺旋微切面18强度的效果，因而是在同一刀具上的设置具有很高的强度和稳定性，相比普通扩孔钻具有更加耐用和强度刃度的稳定性的优势，因此具备高效率的优势，钻孔精度也更高。
实施方式5：
如图5所示，本发明的第四实施方式的分径移位麻花钻，本发明的实施方式实在第一——四实施方式的基础上进行综合选择性运用，在切削刃6上设置凹口 刃29，凹口刃29向后切削面延伸形成有凹槽26；或在后切削面上从刀具头1中心附近向外侧的侧刃上以高度逐渐降低的方式形成一级或多级台阶即凸起台27，后切削面5与凸起台27相交形成有侧刃7，凸起台27与螺旋切削面13相交形成有立刃28；或在至少一级阶梯状后切削面上设置至少一个凹口刃29向后切削面5延伸形成有至少一个凹槽30；
在钻床上进行的对比实验中，以直径10.15的麻花钻为实验，同为M35的含钴高速钢，同时热处理，同批次生产，钻孔对象为锻打调质的齿轮精车加工价，钻孔深度35mm，盲孔，分径移位麻花钻的螺旋微切面18宽1.5mm，微强化应力延展台2016高0.6mm，在切削刃6上设置凹口刃29，凹口刃29深1mm，凹口刃29宽1.3mm，在普通结构的麻花钻转速和进刀量达到极限的情况下，分径移位麻花钻还可以提高转速35％，提高进刀量35％，综合钻孔效率提高0.8225倍，普通结构的麻花钻钻孔312个，分径移位麻花钻钻孔1675个，钻孔数量分径移位麻花钻比普通结构的麻花钻多增加四倍多。
在第一——四实施方式的基础上进行综合选择性运用两侧的后切削面相交形成的横刃O上，两端倒角形成有倒角面22和倒角刃2，原横刃O倒角后形成为缩小的横刃O或无横刃O的尖刃O，由于横刃的减小或消除极大地降低了由于横刃过长所产生的巨大阻力。
以上虽然以具有两个螺旋条4的刀具为例进行了说明，但是本发明的刀具也可具有多个螺旋条4，在各螺旋条4上可以采用如所述实施方式的结构及其其它多种形式的组合。
以上所述的优选实施方式是说明性的而不是限制性的，在不脱离本发明的主旨和基本特征的情况下，本发明还可以以其他方式进行实施和具体化，本发明的范围由权利要求进行限定，在权利要求限定范围内的所有变形都落入本发明的范围内。

Claims (10)

  1. 分径移位麻花钻，包括刀具柄和刀具头，刀具头一体地设置有至少两个螺旋条，在每个螺旋条的朝向切削方向的面形成为螺旋切削面，旋转方向上向后的螺旋切削面外面侧的面为螺旋副切削面，螺旋切削面与螺旋副切削面相交形成有螺旋切削刃，螺旋切削面的轴向前端背面侧的面形成为后切削面，至少两侧的后切削面相交形成有横刃，螺旋切削面与后切削面相交形成有切削刃，螺旋副切削面与后切削面相交形成有侧刃，
    在人们日常接触的环境下，固体的体积极限受温度和地球引力的影响，极限体积相对要小很多，当固体体积在减小的情况下其强度却在适当的增强，其中毫米强度是比较突出的例子，根据两个固体体积相同的情况下，其中分散成小体积的固体的表面积之和大于等量整体的固体的表面积，固体的整体结构达到一定体积极限时即使是金刚石也会碎裂，按体积受力的情况下小体积的固体受力强度之和远大于整体的固体的受力强度，在常规物理状态下，毫米量级是同种固体最明显的高强度的固体结构，
    本发明是在分径移位麻花钻上进行具有毫米强度的应用，在毫米量级上分径移位麻花钻的切削刃强度至少提高百分之五十以上，在毫米量级上分径移位麻花钻的切削面上平均承受的压强可提高百分之五十以上，
    其特征在于：所述的分径移位麻花钻的螺旋切削面上，一体地或连接并形成为一体地进行具有毫米强度的微强化应力延展台、具有毫米强度的侧微刃、具有毫米强度的螺旋微切面、具有毫米强度的切削微刃和具有毫米强度的螺旋微切刃的设置，
    所述的分径移位麻花钻的螺旋切削面上，从分径移位麻花钻的外周缘的螺旋切削刃开始向轴向中心方向的螺旋切削面上凹陷的设置具有毫米强度的螺旋微切面；所述的具有毫米强度的螺旋微切面的宽度为大于等于0.6毫米，小于等于10毫米；
    所述的螺旋切削面上凹陷设置的具有毫米强度的螺旋微切面与内侧凸起的螺旋切削面相交形成具有毫米强度的微强化应力延展台；所述的具有毫米强度的微强化应力延展台的高度为大于等于0.15毫米，小于等于6毫米；
    所述的具有毫米强度的螺旋微切面与外周缘的螺旋副切削面相交形成具有毫米强度的螺旋微切刃；
    所述的具有毫米强度的螺旋微切面与后切削面相交形成具有毫米强度的切削微刃；所述的具有毫米强度的切削微刃的长度为大于等于0.6毫米，小于等于10毫米；
    所述的具有毫米强度的微强化应力延展台与后切削面相交形成具有毫米强度的侧微刃；所述的具有毫米强度的侧微刃的长度为大于等于0.15毫米，小于等于6毫米。
  2. 分径移位麻花钻，包括刀具柄和刀具头，刀具头一体地设置有至少两个螺旋条，在每个螺旋条的朝向切削方向的面形成为螺旋切削面，旋转方向上向后的 螺旋切削面外面侧的面为螺旋副切削面，螺旋切削面与螺旋副切削面相交形成有螺旋切削刃，螺旋切削面的轴向前端背面侧的面形成为后切削面，至少两侧的后切削面相交形成有横刃，螺旋切削面与后切削面相交形成有切削刃，螺旋副切削面与后切削面相交形成有侧刃，
    在人们日常接触的环境下，固体的体积极限受温度和地球引力的影响，极限体积相对要小很多，当固体体积在减小的情况下其强度却在适当的增强，其中毫米强度是比较突出的例子，根据两个固体体积相同的情况下，其中分散成小体积的固体的表面积之和大于等量整体的固体的表面积，固体的整体结构达到一定体积极限时即使是金刚石也会碎裂，按体积受力的情况下小体积的固体受力强度之和远大于整体的固体的受力强度，在常规物理状态下，毫米量级是同种固体最明显的高强度的固体结构，
    本发明是在分径移位麻花钻进行具有毫米强度的应用，在毫米量级上分径移位麻花钻的切削刃强度至少提高百分之五十以上，在毫米量级上分径移位麻花钻的切削面上平均承受的压强可提高百分之五十以上，
    其特征在于：在分径移位麻花钻上，一体地，或连接并形成为一体地进行以下技术方案的设置，在该分径移位麻花钻的螺旋切削面的内侧靠近轴向中心附近，螺旋切削面上立起的设置具有毫米强度的螺旋阶梯中心台；所述的具有毫米强度的螺旋阶梯中心台的高度为大于等于0.15毫米，小于等于10毫米；
    所述的具有毫米强度的螺旋阶梯中心台的内侧朝向旋转方向上凸起的设置螺旋阶梯中心面；所述的螺旋阶梯中心面的宽度小于等于分径移位麻花钻半径的三分之一；
    所述的具有毫米强度的螺旋阶梯中心台与具有毫米强度的螺旋阶梯中心面相交形成有具有毫米强度的螺旋中心刃。
  3. 分径移位麻花钻，涉及用于机械加工的钻孔刀具，包括刀具柄和刀具头，刀具头一体地设置有至少两个螺旋条，在每个螺旋条的朝向切削方向的面形成为螺旋切削面，旋转方向上向后的螺旋切削面外面侧的面为螺旋副切削面，螺旋切削面与螺旋副切削面相交形成有螺旋切削刃，螺旋切削面的轴向前端背面侧的面形成为后切削面，至少两侧的后切削面相交形成有横刃，螺旋切削面与后切削面相交形成有切削刃，螺旋副切削面与后切削面相交形成有侧刃，
    在人们日常接触的环境下，固体的体积极限受温度和地球引力的影响，极限体积相对要小很多，当固体体积在减小的情况下其强度却在适当的增强，其中毫米强度是比较突出的例子，根据两个固体体积相同的情况下，其中分散成小体积的固体的表面积之和大于等量整体的固体的表面积，固体的整体结构达到一定体积极限时即使是金刚石也会碎裂，按体积受力的情况下小体积的固体受力强度之和远大于整体的固体的受力强度，在常规物理状态下，毫米量级是同种固体最明显的高强度的固体结构，
    本发明是在分径移位麻花钻进行具有毫米强度的应用，在毫米量级上分径移 位麻花钻的切削刃强度至少提高百分之五十以上，在毫米量级上分径移位麻花钻的切削面上平均承受的压强可提高百分之五十以上，
    其特征在于：在分径移位麻花钻上，一体地，或连接并形成为一体地进行以下技术方案的设置，在分径移位麻花钻从轴向中心向外周缘的螺旋切削刃的螺旋切削面上，阶梯状凹陷的设置具有毫米强度的螺旋分孔台；所述具有毫米强度的螺旋分孔台的高度为大于等于0.15毫米，小于等于10毫米；
    所述具有毫米强度的螺旋分孔台的上部内侧凸起的螺旋切削面为螺旋分孔切削面，螺旋分孔切削面的宽度大于等于分径移位麻花钻半径的三分之一，小于等于分径移位麻花钻半径的三分之二；
    所述具有毫米强度的螺旋分孔台的顶部与内侧凸起的螺旋切削面相交形成具有毫米强度的螺旋分切刃。
  4. 如权利要求1-3任一所述的分径移位麻花钻，
    其特征在于：所述的螺旋阶梯中心面或螺旋分孔切削面或具有毫米强度的螺旋微切面上沿轴向设置螺旋三角槽；
    或所述的具有毫米强度的螺旋阶梯中心面或螺旋分孔切削面或具有毫米强度的螺旋微切面上沿轴向设置螺旋梯形槽。
  5. 如权利要求2所述的分径移位麻花钻，
    其特征在于：所述的分径移位麻花钻的具有毫米强度的螺旋阶梯中心台与后切削面相交形成具有毫米强度的侧微刃；
    或所述的具有毫米强度的螺旋分孔台与后切削面相交形成具有毫米强度的侧微刃；
    所述的具有毫米强度的侧微刃的长度为大于等于0.15毫米，小于等于6毫米。
  6. 如权利要求3所述的分径移位麻花钻，
    其特征在于：所述的螺旋阶梯中心面或螺旋分孔切削面或具有毫米强度的螺旋微切面上沿轴向设置成螺旋沟槽状。
  7. 如权利要求1-3任一所述的分径移位麻花钻，
    其特征在于：所述的分径移位麻花钻两侧的后切削面在轴向中心相交形成有横刃；或所述的分径移位麻花钻的横刃的两侧倒角形成有倒角面和减小的横刃或无横刃的尖刃。
  8. 如权利要求1-3任一所述的分径移位麻花钻，
    其特征在于：所述的分径移位麻花钻的刀具柄和刀具头的螺旋条中设置有冷却孔。
  9. 如权利要求1-3任一所述的分径移位麻花钻，
    其特征在于：所述的分径移位麻花钻从中心横刃开始以向外侧的侧刃方向的后切削面上高度降低的方式设置至少一级台阶。
  10. 如权利要求1-3任一所述的分径移位麻花钻，
    其特征在于：所述的分径移位麻花钻的切削刃上设置有至少一个凹口刃，
    所述的凹口刃向后切削面延伸形成有至少一个凹槽。
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