WO2018094816A1 - Dispositif ayant des filets internes et outil de façonnage de filet femelle - Google Patents

Dispositif ayant des filets internes et outil de façonnage de filet femelle Download PDF

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Publication number
WO2018094816A1
WO2018094816A1 PCT/CN2016/112985 CN2016112985W WO2018094816A1 WO 2018094816 A1 WO2018094816 A1 WO 2018094816A1 CN 2016112985 W CN2016112985 W CN 2016112985W WO 2018094816 A1 WO2018094816 A1 WO 2018094816A1
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WO
WIPO (PCT)
Prior art keywords
thread
threaded member
special
internally threaded
central axis
Prior art date
Application number
PCT/CN2016/112985
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English (en)
Chinese (zh)
Inventor
吴叁贵
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诠丰精密工具股份有限公司
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Publication of WO2018094816A1 publication Critical patent/WO2018094816A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G5/00—Thread-cutting tools; Die-heads
    • B23G5/02—Thread-cutting tools; Die-heads without means for adjustment
    • B23G5/06—Taps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/004—Sealing; Insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • F16B39/16—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/30—Locking exclusively by special shape of the screw-thread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G2210/00—Details of threads produced
    • B23G2210/04—Internal threads

Definitions

  • the present invention relates to a locking member and a tool for forming the locking member, and more particularly to an internally threaded member and an internally thread forming tool for machining the inner threaded member by the internally thread forming tool Thread.
  • Common internal threaded parts include nuts and internal pipe joints (such as straight-through, elbow or tee fittings), etc., taking a nut as an example, please refer to Figure 1, which is a conventional nut 91 and a screw 92 having an inner circumferential surface of the nut 91 having a plurality of internal threads 911 connected in a spiral shape, and the distance between the spiral valleys (ie, the bottoms) of the internal threads 911 to the central axis S1 of the nut 91 is equal;
  • the outer peripheral surface of the screw 92 has a plurality of external threads 921 connected in a spiral shape, and the distance between the peak of each of the external threads 921 (ie, the crest) to the central axis S2 of the screw 92 is equal, and each of the outer surfaces
  • the tooth shape and pitch of the thread 921 are also the same.
  • the central axis S1 of the nut 91 is coaxial with the central axis S2 of the screw 92, and the plurality of external threads 921 of the screw 92 and the screw The plurality of internal threads 911 of the cap 91 are screwed together.
  • the current practice is to clamp the nut 91 and the screw 92, and additionally use a tool to clamp the nut 91, so that the nut 91 is slightly deformed to reduce the nut 91 and The gap of the screw 92 further delays the loosening of the nut 91 and the screw 92 due to vibration, but it is necessary to re-examine and improve the looseness of the screw after each time. It has been difficult for a long time to reduce the labor and time costs required for maintenance; and once the maintenance is neglected, it is possible that unnecessary accidents may occur due to loosening of the nut 91 and the screw 92, so that it is necessary to improve.
  • the aforementioned small gap is also formed, so that it is necessary to wrap such as a leak-proof tape to determine the adhesion of the two to prevent leakage.
  • the construction steps are cumbersome and costly.
  • the articles such as the leak-proof tape may deteriorate due to the use time, so that the leakage prevention effect is gradually deteriorated, and regular maintenance is required, so the labor, time, and consumables required for maintenance are hard to be reduced.
  • the present invention provides an internally threaded member having an inner circumferential surface provided with a plurality of internal threads, and the internally threaded member may be fastened by at least one internal thread and an external thread having an externally threaded member.
  • the internally threaded member and the externally threaded member which are screwed together are not easily loosened or a good leakproof effect can be achieved.
  • the present invention further provides an internal thread forming tool for processing and forming the internal thread of the internal threaded member, so that the obtained internally threaded member is not easily loosened after being screwed with the externally threaded member or can achieve good protection. Leakage effect.
  • the internally threaded member of the present invention has a central axis, and the farthest distance between the opposite sides of an internal thread from the central axis in the direction orthogonal to the central axis is defined as "large diameter"; The closest distance between the inner threads from opposite sides of the central axis is defined as “small diameter”; the present invention further defines that the average of the major and minor diameters of an internal thread is "Pitch Diameter”.
  • the internally threaded member of the present invention has a plurality of internal threads arranged in a spiral shape on the inner circumferential surface thereof; at least one of the internal threads forms a special thread, and the pitch diameter of the special thread is different from the pitch diameter of the other internal threads.
  • the internally threaded member of the present invention can be fastened by the special thread and the external thread of the externally threaded member, so that the internally threaded member and the externally threaded member are not easily loosened, so when When the internally threaded member is a nut, the nut does not need to be clamped to deform after the nut is installed; when the internally threaded member is an inner tube joint, the inner tube joint can be installed without using it.
  • the leakage preventing tape and the like can ensure a good leakproof effect, so that the internally threaded member of the present invention can improve assembly convenience and efficiency.
  • the internally threaded member of the present invention can be kept in close contact with the externally threaded member and is not easily loosened, the frequency of re-examining and improving the looseness of both can be reduced, which helps to reduce maintenance. Manpower and time costs to solve problems that are long-standing and difficult to improve.
  • the large diameters of the internal threads can be selected to be equal, and the small diameter of the special thread is smaller than the small diameters of the other internal threads; the structure is simple and convenient to manufacture, and the internal threaded member of the present invention can be ensured with the externally threaded member. Fasten the cassette.
  • the thread of the special thread has a convex portion protruding from at least one surface of the two sides of the spiral peak forming the special thread, so that the protruding portion of the special thread can be provided
  • the external thread of the externally threaded member is deformed or even broken to improve the screw tightness of the internally threaded member and the externally threaded member.
  • the diameters of the internal threads may be equal, and the large diameter of the special thread is smaller than the large diameter of the other internal threads; the structure is simple and convenient to manufacture, and the internal threaded member of the present invention can be ensured
  • the male screw is fastened to the cassette.
  • the special valley of the special thread has a concave portion recessed on at least one surface on both sides of the spiral valley forming the special thread, so that the screw peak of the external thread aligned at the special thread It can be deformed or even destroyed by the special thread to fill the concave portion of the special thread to achieve the screwing tightness of the internally threaded member and the externally threaded member.
  • the internally threaded member has a central shaft, and the plurality of internal threads are spirally connected around the central axis, and the special thread is disposed on the centrally threaded member in the direction of the central axis One end to improve the ease of operation when screwing.
  • the internal thread forming tool of the present invention comprises: a shank having a central shaft; and a cutter head coaxially connected to one end of the shank, the circumferential surface of the cutter head being provided a plurality of cutting edges, wherein at least one of the cutting edges forms a special edge, and the maximum diameter of each of the cutting edges is equal in a direction orthogonal to the central axis, and the minimum diameter of the special blade is smaller than that of the other cutting edges Minimum diameter.
  • another internal thread forming tool of the present invention includes: a shank having a central shaft; and a cutter head coaxially coupled to one end of the shank, the ring of the cutter head
  • the peripheral surface is provided with a plurality of cutting edges, wherein at least one of the cutting edges forms a special edge, and the minimum diameter and width of each of the cutting edges are equal in a direction orthogonal to the central axis, and the maximum diameter of the special blade is smaller than other The maximum diameter of the cutting edge.
  • the internal thread forming tool of the present invention can be used to machine the internal thread of the internally threaded member, and the internal thread forming tool itself has a simple structure and is easy to manufacture, and has the technical effect of reducing the manufacturing cost.
  • the plurality of cutting edges are disposed at equal intervals on the circumferential surface of the cutter head, and the plurality of cutting edges are not spirally connected; or the plurality of cutting edges are spirally connected to the cutter head The circumferential surface of the ring. Accordingly, the internal thread forming tool of the present invention can be formed into the internal thread of the aforementioned internally threaded member by different processing methods.
  • the special blade is provided with a concave portion recessed toward the central axis at a position closest to the central axis, so that a corresponding protruding portion can be formed at the peak of the special thread having the internally threaded member.
  • the special blade is provided with a protruding portion farthest from the central axis, so that the threaded valley of the special thread having the internally threaded member can be formed into a corresponding concave portion.
  • each of the cutting edges has two inclined faces and an outer end edge farthest from the central axis, and the protruding portion preferably protrudes from at least one inclined surface of the special blade, so that the formed internal threaded member
  • the protruding portion of the special thread can be deformed or even broken by the external thread of the externally threaded member to improve the screw tightness of the internally threaded member and the externally threaded member.
  • the special blade is disposed on the cutter head at an end farther away from the shank, so that the formed internal threaded member and the externally threaded member are screwed together for better convenience.
  • Figure 1 Schematic diagram of a side cross-sectional view of a conventional nut and screw.
  • Fig. 2 is a partially cross-sectional perspective view showing the internal threaded member of the first embodiment of the present invention.
  • Fig. 4 is a side cross-sectional structural view showing the first embodiment of the present invention with an internally threaded member and an externally threaded member.
  • Fig. 5 is a partially enlarged schematic view of Fig. 4.
  • Fig. 6 is a perspective view showing the three-dimensional structure of the internally thread forming tool of the first embodiment of the present invention.
  • Fig. 7 is a side sectional view showing the internal thread forming tool of the first embodiment of the present invention.
  • Fig. 8 is a perspective view showing the inner peripheral surface of the internally threaded member of the internally thread forming tool and the tool according to the first embodiment of the present invention.
  • Fig. 9 is a perspective view showing the structure of another internally thread forming tool of the first embodiment of the present invention.
  • Fig. 10 is a side sectional structural view showing another internal thread forming tool of the first embodiment of the present invention.
  • Figure 11 is a schematic view showing the implementation of the inner peripheral surface of the internally threaded tool and the internally threaded member of the tool according to the first embodiment of the present invention.
  • Figure 12 is a partial side cross-sectional view showing the second embodiment of the present invention with an internally threaded member.
  • Figure 13 is a side cross-sectional structural view showing the second embodiment of the present invention with an internally threaded member and an externally threaded member.
  • Figure 14 is a partially enlarged schematic view of Figure 13.
  • Figure 15 is a side cross-sectional view showing the internal thread forming tool of the second embodiment of the present invention.
  • Figure 16 is a side cross-sectional structural view showing the internal threaded member of the present invention forming a tapered internal thread.
  • the internally threaded member 1 is represented by a nut type, but is not limited thereto.
  • the internally threaded member 1 has a central axis A1, and the inner peripheral surface of the internally threaded member 1 is provided with a plurality of internal threads 11 which are spirally connected about the central axis A1.
  • the inner peripheral surface of the internally threaded member 1 can be substantially straight-shaped or expanded in a tapered shape at a portion where the plurality of internal threads 11 are provided; in this embodiment, a straight cylindrical shape of equal diameter is taken as an example. The description, while the tapered shape of the expansion is described in detail later.
  • At least one of the internal threads 11 of the internally threaded member 1 forms a special thread S having a pitch diameter P' which is different from the pitch diameter P of the other internal threads 11.
  • the large diameters of the internal threads 11 are selected to be equal, and the small diameter of the special thread S is smaller than the small diameters of the other internal threads 11 so that the pitch diameter P′ of the special thread S is different from that of the other internal threads 11 .
  • the thread angles of the internal threads 11 are equal, and in the direction orthogonal to the central axis A1, the internal threads 11 are farthest from the opposite sides of the central axis A1.
  • the distance D1 between (the respective valleys of the internal threads 11) is equal; that is, the major diameters of the internal threads 11 are equal.
  • the special screw thread S has a protruding portion 12 at a peak thereof, and the protruding portion 12 protrudes from at least one surface of the two sides of the spiral peak forming the special thread S, preferably symmetrically protruding to form the The upper surface and the lower surface of both sides of the spiral peak of the special thread S; and in orthogonal In the direction of the central axis A1, the distance D2' between the opposite sides of the special thread S that is closest to the central axis A1 (the projection 12) is smaller than the closest of the other internal threads 11 to the central axis A1.
  • the special thread S is preferably provided at one end of the internally threaded member 1 in the direction of the central axis A1.
  • each of the internal threads 11 of the internally threaded member 1 of the present invention can be respectively associated with a plurality of external threads 71 corresponding to a conventional externally threaded member 7.
  • a plurality of external threads 71 can pass through the special thread S. Accordingly, the internally threaded internally threaded member 1 and the externally threaded member 7 can be deformed by the external thread 71 aligned at the special thread S and even deform the projection 12 of the special thread S.
  • the effect of preventing the external threaded member 7 from being loosened can be greatly improved, so that The internally threaded internally threaded member 1 and the externally threaded member 7 are hardly released by vibration.
  • the number of the special thread S should be determined according to the difference between the pitch diameter P' of the special thread S and the pitch diameter P of the other internal thread 11, and when the difference between the two pitches P' and P is large, the special The number of gauge threads S should be reduced, for example, two; when the two pitch diameters P' and P are small, the number of the special thread S can be increased, for example, four or five, so that the outer shield can be avoided.
  • the operation difficulty of the screw member 7 when screwed with the female screw member 1 is difficult.
  • the present invention further discloses an internal thread forming tool 2 for processing the plurality of internal threads 11 of the first embodiment with the internally threaded member 1; the internal thread forming tool 2 Generally, a shank 2a and a cutter head 2b are attached, and the cutter head 2b is coupled to one end of the shank 2a.
  • the shank 2a has a central axis A2, which can be clamped on a chuck of a rotary processing machine such as a lathe or a milling machine, so that the cutter head 2b of the internally thread forming tool 2 can accurately align with the workpiece. And the machining of the workpiece is performed on the workpiece.
  • a rotary processing machine such as a lathe or a milling machine
  • the cutter head 2b is coaxially coupled to one end of the shank 2a so as to be synchronously rotated by the shank 2a.
  • a plurality of cutting edges 21 are disposed on the circumferential surface of the cutting head 2b, that is, the plurality of cutting edges 21 are respectively a convex ring on the circumferential surface of the cutting head 2b, and the plurality of cutting edges 21 are Not connected in a spiral.
  • the cutter head 2b is further provided with at least one chip flute 22 which passes through the plurality of cutting edges 21 and extends toward the shank 2a by the free end surface of the cutter head 2b, so as to generate chips when cutting the workpiece. The material can be removed by the chip flute 22, thereby maintaining the smoothness of the cutting process.
  • Each of the cutting edges 21 includes two inclined faces 211, and an angle ⁇ is formed between the two inclined faces 211, and the angle ⁇ of each of the cutting edges 21 is preferably equal.
  • Each of the cutting edges 21 has an outer end edge 212 that is furthest from the central axis A2.
  • At least one of the cutting edges 21 forms a special edge B, in the positive In the direction of the central axis A2, the maximum diameter W1 of each of the cutting edges 21 is equal, and the minimum diameter W2' of the special edge B is smaller than the minimum diameter W2 of the other cutting edges 21; for example,
  • the blade B is provided at a position closest to the central axis A2 with a recess 23 recessed toward the central axis A2.
  • the special blade B is preferably disposed on an end of the bit 2b that is farther away from the shank 2a.
  • the internal thread forming tool 2 of the present invention can be used to machine the inner circumferential surface of the internally threaded member 1 for an internal thread to be cut, so as to have the internal thread to be cut.
  • the inner peripheral surface of the internally threaded member 1 is formed with the aforementioned plurality of internal threads 11.
  • the internally thread forming tool 2 can be placed in a space surrounded by the inner circumferential surface of the internally threaded member 1 of the internal thread to be cut, and the internal thread forming tool 2 rotated by the high speed is used for the cutting head 2b thereof.
  • the outer edge 212 of the special blade B and the plurality of cutting edges 21 contacts the inner peripheral surface of the internally threaded member 1 of the internal thread to be cut, and controls the internally threaded member 1 of the internal thread to be cut to rotate slowly for one week, and During the rotation of the internally threaded member 1 , the internal thread forming tool 2 is controlled to be axially displaced by a pitch with respect to the internally threaded member 1; thus, within the internally threaded member 1 The plurality of internal threads 11 and the special thread S which are spirally connected are cut out on the circumferential surface.
  • the present invention further discloses another internal thread forming tool 3, which can be similar to the existing tapping tool, which can also be used to process the inside of the first embodiment.
  • a plurality of internal threads 11 of the threaded member 1; the internally thread forming tool 3 generally includes a shank 3a and a cutter head 3b coupled to one end of the shank 3a.
  • the shank 3a has a central axis A3, and the shank 3a can be clamped on the chuck of a rotary processing machine such as a lathe or a milling machine to make the cutter head of the internal thread forming tool 3.
  • 3b can accurately align with the workpiece and perform machining operations on the workpiece.
  • the cutter head 3b is coaxially coupled to one end of the shank 3a so as to be synchronously rotated by the shank 3a.
  • a plurality of cutting edges 31 are spirally connected to the circumferential surface of the cutting head 3b, and the cutting head 3b is further provided with at least one chip flute 32 for chip evacuation. Wherein, the free end of the cutter head 3b is reduced in diameter to improve the smoothness of the drilled hole.
  • Each of the cutting edges 31 includes two inclined faces 311, and an angle ⁇ is formed between the two inclined faces 311, and the angle ⁇ of each of the cutting edges 31 is preferably equal.
  • Each of the cutting edges 31 has an outer end edge 312 farthest from the central axis A3, wherein at least one cutting edge 31 forms a special edge B, and the maximum of each cutting edge 31 in a direction orthogonal to the central axis A3
  • the path width W3 is equal, and the minimum path width W4' of the special blade B is smaller than the minimum path width W4 of the other cutting edges 31; for example, the special blade B is disposed closest to the central axis A3 toward the central axis A recessed portion 33 of the recess A3; the special edge B is preferably disposed on an end of the cutter head 3b that is farther away from the shank 3a.
  • the internal thread forming tool 3 of the present invention can be used to machine the inner circumferential surface of the internally threaded member 1 for an internal thread to be cut, so as to have the internal thread to be cut.
  • the inner peripheral surface of the internally threaded member 1 is formed with the aforementioned plurality of internal threads 11.
  • the high-speed rotating internal thread forming tool 3 can be contacted by the free end of the cutter head 3b with the top surface of the internally threaded member 1 to be cut and internally tapped, and the special edge B of the cutter head 3b
  • the outer peripheral edge 312 of the plurality of cutting edges 31 drills the inner peripheral surface of the internally threaded member 1, and the plurality of internal threads 11 and the special thread S which are spirally connected are cut out on the inner peripheral surface.
  • the internally threaded member 4 of the present invention is a second embodiment of the internally threaded member 4 of the present invention
  • the main difference between the second embodiment of the present invention and the first embodiment described above is that the internally threaded member 4 of the second embodiment of the present invention
  • the diameters of the internal threads 41 are selected to be equal, and the large diameter of the special thread S is smaller than the large diameter of the other internal threads 41, so that the pitch diameter P' of the special thread S is different from the diameter of the other internal threads 41.
  • the internally threaded member 4 is represented by an internal tube joint type, but is not limited thereto.
  • the thread angles of the internal threads 41 are equal, and in the direction orthogonal to the central axis A4, the internal threads 41 are closest to opposite sides of the central axis A4 ( The distance D3 between the respective peaks of the internal threads 41 is equal; that is, the diameters of the internal threads 41 are equal.
  • the special thread S has a concave portion 42 at the spiral valley, and the concave portion 42 is recessed on at least one surface of the two sides of the spiral valley forming the special thread S, preferably It is said to protrude from the upper surface and the lower surface of both sides of the spiral valley forming the special thread S; in the direction orthogonal to the central axis A4, the special thread S is farthest from the opposite sides of the central axis A4 ( The distance D4' between the recessed portions 42) is smaller than the distance D4 between the opposite sides of the other internal threads 41 farthest from the central axis A4 (at the valleys of the other internal threads 41); that is, the special thread S The large diameter is smaller than the large diameter of the other internal threads 11.
  • the special thread S is preferably provided at one end of the internally threaded member 1 in the direction of the central axis A4.
  • the internally threaded member 4 and the externally threaded member 8 are subjected to vibration, the external thread 81 and the special thread S which are fastened to each other are also blocked.
  • the internally threaded member 4 and the externally threaded member 8 are less likely to be loosened by vibration, thereby achieving the same technical effects as lifting the assembly convenience, improving the assembly efficiency, and reducing the labor and time required for maintenance.
  • the effect of preventing the loosening of the external thread member 8 can be greatly improved, so that The internally threaded internally threaded member 4 and the externally threaded member 8 are hardly released by vibration.
  • the present invention further discloses an internal thread forming tool 5 for processing a plurality of internal threads 41 of the second embodiment having the internally threaded member 4.
  • the internally thread forming tool 5 generally includes a shank 5a and a cutter head 5b attached to one end of the shank 5a.
  • the shank 5a has a central axis A5 coaxially coupled to one end of the shank 5a for simultaneous rotation by the shank 5a.
  • the circumferential surface of the cutter head 5b is convexly arranged, etc.
  • the plurality of cutting edges 51 are respectively a convex ring on the circumferential surface of the cutting head 5b, and the plurality of cutting edges 51 are not spirally connected, and the cutting head 5b is further At least one chip flute is provided for chip evacuation.
  • the free end of the cutter head 6b is reduced in diameter to improve the smoothness of the drilled hole.
  • Each of the cutting edges 51 includes two inclined faces 511, and an angle ⁇ is formed between the two inclined faces 511, and the angle ⁇ of each of the cutting edges 51 is preferably equal.
  • Each of the cutting edges 51 has an outer end edge 512 farthest from the central axis A5, wherein at least one cutting edge 51 forms a special edge B, and the cutting edge 51 is the most in the direction orthogonal to the central axis A5.
  • the minor diameter W5 is equal, and the maximum diameter W6' of the special blade B is smaller than the maximum diameter W6 of the other cutting edges 51; for example, the special blade B is provided with a projection 52 farthest from the central axis A6.
  • the protrusion 52 protrudes from at least one slope 511 of the special edge B, and preferably protrudes symmetrically from the two slopes 511 of the special edge B.
  • the special blade B is preferably disposed on an end of the bit 5b that is farther away from the shank 5a.
  • the present invention can machine the inner peripheral surface of the internally threaded member 4 of an internal thread to be cut, so as to have an internal thread of the internal thread to be cut.
  • the inner circumferential surface of the member 4 is formed with the aforementioned plurality of internal threads 41 and special thread S.
  • the inner circumferential surfaces of the internally threaded members of the above embodiments are all presented in a straight cylindrical shape of equal diameter, but the inner circumferential surface of the internally threaded member of the present invention may actually be an expanded diameter cone. Shape type. That is, referring to FIG. 16, the thread angles of the internal threads 41' of the internally threaded member 4' are still equal, but the large diameter and the small diameter of each of the internal threads 41' are increased toward the open end, so that the internal thread The inner peripheral surface of the piece 4' is tapered.
  • the internally threaded member 4' may be a nut or an internal pipe joint, but still have a special thread S in the plurality of internal threads 41' having a different diameter than the other internal threads 41' to achieve the foregoing.
  • a special thread S in the plurality of internal threads 41' having a different diameter than the other internal threads 41' to achieve the foregoing.
  • the internally threaded member of the present invention can be fastened by at least one internal thread and an external thread having an externally threaded member, so that the internally threaded member and the externally threaded member are not easily loosened. Therefore, when the internally threaded member is a nut, the screw does not need to be clamped after the nut is installed. Cap to deformation; when the internally threaded member is an internal tube joint, the inner tube joint can be installed without using an article such as a leakproof tape to ensure a good leakproof effect, and therefore, the internally threaded member of the present invention Improve assembly convenience and efficiency.
  • the internally threaded member of the present invention can be kept in close contact with the externally threaded member and is not easily loosened, the frequency of re-examining and improving the looseness of both can be reduced, which helps to reduce maintenance. Manpower and time costs to solve problems that are long-standing and difficult to improve.
  • the internal thread forming tool of the present invention can be used to machine the internal thread having the internally threaded member, and the internal thread forming tool itself has a simple structure and is easy to manufacture, and has a technical effect of reducing the manufacturing cost.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Knives (AREA)

Abstract

L'invention concerne un dispositif (1) ayant des filets internes. Au moins un filet interne (11) est différent des autres filets internes au niveau du diamètre primitif, de sorte qu'au moins un filet interne du dispositif ayant des filets internes est attaché et fixé à un filet externe (71) d'un dispositif (7) ayant des filets externes, et le dispositif ayant des filets internes et le dispositif ayant des filets externes vissés ensemble ne sont pas faciles à détacher et ont un effet anti-fuite. L'invention concerne également un outil de façonnage de filet interne (2, 3) destiné à façonner des filets internes.
PCT/CN2016/112985 2016-11-25 2016-12-29 Dispositif ayant des filets internes et outil de façonnage de filet femelle WO2018094816A1 (fr)

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CN201611058622.5 2016-11-25
CN201611058622 2016-11-25

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WO2018094816A1 true WO2018094816A1 (fr) 2018-05-31

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CN (1) CN108105247A (fr)
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754871A (en) * 1952-09-04 1956-07-17 Stoll Albert Self-locking nut having a radially deformed thread portion and method for the production of the same
SE324677B (fr) * 1966-02-16 1970-06-08 Lamson & Sessions Co
CN1035870A (zh) * 1988-03-04 1989-09-27 杉村宣行 呈现优良抗疲劳性的阶梯形螺纹和截断形螺纹接头
DE69808453T2 (de) * 1997-04-16 2003-07-03 Huck International, Inc. Freilaufende mutter mit drehsicherungsmoment
CN103765021A (zh) * 2011-08-31 2014-04-30 株式会社青山制作所 防烧结螺母
CN204912968U (zh) * 2015-08-17 2015-12-30 上海诠丰工具有限公司 螺纹刀

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010015819U1 (de) * 2010-11-29 2011-01-20 Acument Gmbh & Co. Ohg Selbstsichernde Mutter
CN206647402U (zh) * 2016-11-25 2017-11-17 诠丰精密工具股份有限公司 具内螺纹件及内螺纹成型工具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754871A (en) * 1952-09-04 1956-07-17 Stoll Albert Self-locking nut having a radially deformed thread portion and method for the production of the same
SE324677B (fr) * 1966-02-16 1970-06-08 Lamson & Sessions Co
CN1035870A (zh) * 1988-03-04 1989-09-27 杉村宣行 呈现优良抗疲劳性的阶梯形螺纹和截断形螺纹接头
DE69808453T2 (de) * 1997-04-16 2003-07-03 Huck International, Inc. Freilaufende mutter mit drehsicherungsmoment
CN103765021A (zh) * 2011-08-31 2014-04-30 株式会社青山制作所 防烧结螺母
CN204912968U (zh) * 2015-08-17 2015-12-30 上海诠丰工具有限公司 螺纹刀

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CN108105247A (zh) 2018-06-01

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