WO2016163628A1 - 풀림방지용 나사산 구조 및 그 가공공구 - Google Patents
풀림방지용 나사산 구조 및 그 가공공구 Download PDFInfo
- Publication number
- WO2016163628A1 WO2016163628A1 PCT/KR2016/000027 KR2016000027W WO2016163628A1 WO 2016163628 A1 WO2016163628 A1 WO 2016163628A1 KR 2016000027 W KR2016000027 W KR 2016000027W WO 2016163628 A1 WO2016163628 A1 WO 2016163628A1
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- WIPO (PCT)
- Prior art keywords
- thread
- tangential
- loosening
- contact
- tangential portion
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000012545 processing Methods 0.000 claims description 33
- 230000013011 mating Effects 0.000 claims description 16
- 230000002265 prevention Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000035939 shock Effects 0.000 description 7
- 239000011295 pitch Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Images
Classifications
-
- 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/08—Making helical bodies or bodies having parts of helical shape internal screw-threads
-
- 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
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
-
- 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
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by 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
- F16B33/02—Shape of thread; Special thread-forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/025—Rolling locking screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/06—Profile cutting tools, i.e. forming-tools
- B23B27/065—Thread-turning tools
-
- 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
- B23G2210/48—Threads having a special form or profile not otherwise provided for
-
- 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
- B23G5/04—Dies
-
- 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
Definitions
- the present invention relates to a thread structure for preventing loosening and a processing tool thereof, and more particularly, to form a first contact portion and a second contact portion on a no-load side flank of the thread to minimize loosening due to external shock or vibration.
- the present invention relates to a thread structure for preventing loosening and processing tools thereof.
- a screw is a basic function by mating male and female threads of appropriate dimensions, and is mainly used to fasten an object to an object.
- flank surface which is divided into a no-load flank surface forming the entry direction of the thread and a load side flank surface forming the retraction direction of the screw. do.
- an assembly tolerance C is generally present between the outer diameter of the conventional bolt 109 and the inner diameter of the nut 105 for ease of assembly.
- the fastening of the bolt 109 and the nut 105 is performed.
- the state is maintained only by the frictional force acting between the load side flank 108 of the nut 105 and the load flank 112 of the bolt 109, it is caused by the assembly tolerance C when an external shock or vibration is applied. Due to the gap between the load side flank surface 108 of the nut 105 and the load side flank surface 112 of the bolt 109 that are in close contact with each other, the friction force acting only in the close state is easily weakened or dissipated. Or there is a problem that the loosening of the nut 105 occurs frequently.
- the bolt and the nut are coupled with the spring or the ring provided with the anti-rotation protrusion with the release preventing function, or the adhesive, silicone or nylon is filled between the outer diameter of the bolt and the inner diameter of the nut. I was using the way.
- the screw fastening method using the conventional loosening prevention means as described above is fastened with almost no assembly tolerance (C), so that the fastening is not easy, and the configuration is complicated and the production process is increased, resulting in overall production cost.
- C assembly tolerance
- the present invention has been made in order to solve the above problems of the prior art, to securely maintain the friction force acting between the load-side flank surface after screw fastening to effectively prevent loosening due to external impact or vibration Has a purpose.
- the loosening thread structure of the present invention for achieving the above object is provided with a thread having a constant pitch, and on both sides of each thread a load-side flank that forms an unloaded side flank and a retracted oblique side of the thread forming the entry direction of the thread
- the no-load side flank of the thread forms a first angle contacting an arc portion formed at a top of a thread formed on a top of a thread of a corresponding mating member and a predetermined angle from the first tangent portion.
- a second tangent portion in contact with the portion.
- the first tangential portion and the second tangential portion may be in close contact with the arc portion at the same time in a state of being engaged with a corresponding mating fastener.
- the second tangential portion may be formed to have an angle greater than that of the first tangential portion with respect to a horizontal line.
- the first tangential portion and the second tangential portion may be formed to have an angle smaller than the load side flank surface with respect to a horizontal line.
- the screw thread is formed in a dimension satisfying the international standard, the first tangential portion may have an angle between 4 ° and 6 ° with respect to the horizontal line.
- the first tangential portion may have an angle of 5 ° with respect to a horizontal line.
- the second tangent portion may have an angle of 35 ° with respect to the horizontal line.
- the anti-loosening thread processing tool according to the present invention may include various types of processing tools for processing the anti-loosening screw thread structure with female or male threads.
- the loosening thread structure and the processing tool of the present invention for solving the above problems have the following effects.
- the first contact portion and the second contact portion which are in contact with the circular arc portion formed on the top of the counterpart of the counterpart when the screw is fastened, are formed on the unloaded flank surface constituting the inclination surface of the thread in the entry direction, and acts between the load side flank surfaces after the screw is fastened. Since the frictional force is maintained firmly, there is an advantage that can effectively prevent the loosening phenomenon due to external impact or vibration.
- the anti-loosening thread processing tool of the present invention there is an advantage in that the thread structure in which the first tangential portion and the second tangential portion are formed on the no-load side flank of the thread can be easily machined with a female thread or a male thread.
- FIG. 1 is a view showing a fastening process of a general bolt and nut
- FIG. 2 is a view showing a fastening state of a general bolt and nut
- Figure 3 is a view showing the thread structure for preventing loosening according to the present invention.
- 4 to 6 is a view showing an embodiment in which the loosening thread structure according to the invention applied to the nut;
- FIG. 7 and 8 are views showing a process of processing the thread structure for preventing loosening according to the present invention.
- FIG. 9 is a view showing the angle of the first tangential portion and the second tangential portion optimized for the thread structure for preventing loosening according to the present invention.
- FIG. 10 is a view showing a state of the contact point according to the change in the angle of the first tangential portion in the thread structure for preventing loosening according to the present invention
- FIG. 11 is a view showing the state of the contact point according to the change in the angle of the second tangential portion in the thread structure for preventing loosening according to the present invention
- FIG. 12 is a graph showing the amount of change in the fastening torque according to the change in the angle of the first tangential portion in the thread structure for preventing loosening according to the present invention
- 13 to 15 is a view showing an embodiment in which the loosening thread structure according to the invention applied to the bolt;
- 16 and 17 is a view showing a state of the test apparatus for testing the fastening force of the loosening thread structure of the present invention
- FIGS. 18 and 19 are views showing a machining tool for processing the loosening thread structure according to the present invention with a female thread
- 20 to 23 is a view showing a processing tool for processing the thread structure for preventing loosening according to the present invention with a male screw.
- FIG 3 is a view showing the thread structure for preventing loosening according to the present invention.
- the loosening thread structure of the present invention is provided with a thread (1) having a constant pitch, both sides of each thread (1) is a no-load side flank surface forming a slope in the entry direction of the thread (1) (2) and a load side flank 3 which forms the oblique side of the thread in the retracting direction.
- flank surface the inclined surface connecting between the top of the thread and the screw bone
- flank surface is the retraction direction of the unloaded side flank (2) and the thread (1) which form the inclined direction of the thread (1) in the entry direction of the thread (1) centered on the top of the thread. It is divided into the load-side flank surface 3 which forms a slanted surface.
- flanks formed on both sides of the screw thread 1 are divided into the no-load side flank 2 and the load side flank 3 are as follows.
- the non-load side flank (2) is in contact first, in which case no load is applied between the flanks in contact with each other.
- the load side flanks 3 are brought into contact with each other, because a strong load is applied between the flanks which are in contact with each other.
- the no-load side flank of the present invention includes a first tangential portion 2a and a second tangential portion 2b.
- the first tangential portion 2a and the second tangential portion 2a are respectively formed to be in contact with an arc portion 4a formed on the top of the threaded portion 4 of the corresponding mating fastener, respectively, in particular the second tangential portion ( 2b) is formed to have a predetermined angle from the first tangent portion 2a.
- the circular arc portion (4a) formed on the top of the screw thread (4) when the top of the screw thread is formed sharply during the threading process, the end portion is easily broken during the fastening process to prevent foreign matters from interfering with the fastening. In order to prevent it, it means the part where the top of the thread is rounded.
- the circular arc portion 4a formed on the top of the thread 4 provided in the mating fastener is formed on the first tangential portion 2a and the second tangential portion 2 formed on the unloaded side flank 2 of the thread 1.
- the arcuate portion 4a formed at the top of the thread 4 provided in the counterpart fastening firmly deforms the first tangential portion 2a and the second tangential portion 2b while locally deforming it. The state is formed.
- the fastening force may be further improved.
- the second tangential portion 2b is formed to have an angle greater than that of the first tangential portion 2a with respect to a horizontal line. This is for the first tangential portion 2a and the second tangential portion 2b to be in contact with each other so as to surround the arc portion 4a of the mating fastener.
- the first tangential portion 2a and the second tangential portion 2b are formed to have an angle smaller than the load side flank 3 with respect to the horizontal line. This is because the load-side flank surface 3 contacts the mating fastener over the entire area with the first and second tangent parts 2a and 2b being in contact with the arc portion 4a of the mating fastener. To make it possible.
- the anti-loosening screw structure according to the present invention configured as described above can be applied to both female and male threads, but will be described first with reference to FIGS. 4 to 6.
- FIG. 6 when the nut 5 is rotated to fasten the female threaded portion 5a of the nut 5 to the male threaded portion 9a of the bolt 9, the nut ( The no-load side flanks 7 of the thread 6 constituting the female thread part 5a of 5) and the no-load side flanks 11 of the thread 10 constituting the male thread part 9a of the bolt 9 are Contact.
- the bolt (9) and the nut (5) is a non-load side flank surface 11 of the thread (10) constituting the male screw portion (9a) of the bolt (9) and the female screw portion (5a) of the nut (5).
- the no-load side flank 7 of the constituent threads 6 is not fastened in a state of being in surface contact over a large area, but is formed by an arc portion 10a and a nut formed on the top of the screw thread 10 of the bolt 9.
- the second tangential portion 7b of the no-load side flank 7 provided on the thread 6 of 5) is fastened in point contact.
- a circular arc portion 10a formed on the top of the screw thread 10 provided in the bolt 9 is formed on the unloaded side flank surface 7 of the screw thread 6 provided in the nut 5.
- the second contact portion 7b strongly, the arc portion 10a formed on the top of the thread 10 provided in the bolt 9 is the first contact portion 7a and the second contact portion 7b.
- FIG. 7 and 8 are views showing a process of processing the thread structure for preventing loosening according to the present invention
- Figure 9 is a view showing the angle of the first and second tangential portion optimized for the thread structure for preventing loosening according to the present invention. to be.
- the raw thread N is primarily processed to contact the reference curve S to form a second tangential portion.
- the reference curve S is set to correspond to the arc portion of the mating fastener in consideration of the effective diameter of the bolt or nut.
- the second tangential portion is machined in a straight line shape so as to contact the reference curve S, starting from the load side flank surface.
- the first threaded portion is formed by processing the raw thread N processed by the second tangent portion so as to contact the reference curve S.
- the first tangential portion is machined in a straight line in the direction of the second tangential portion so as to contact the reference curve S, starting from the load side flank surface.
- the threaded structure thus manufactured has an angle of 5 ° with respect to the horizontal line, and the second contact portion 7b has an angle of 35 ° with respect to the horizontal line. If it has a contact can be in close contact with the thread 10 of the mating fasteners at the same time.
- the threads of bolts and nuts are standardized according to the International Standard (ISO), so that the pitch, inner diameter, effective diameter and corrugation of the threads increase at a constant rate depending on the size of the bolts and nuts.
- Table 1 below shows the dimensions according to the size of the nut based on ISO68, ISO268.
- the ratio of the height of the thread to the pitch of the thread is constant, and the angle of the thread is fixed at 60 ° so that the optimum angle of the thread can be calculated equally for any size bolt and nut. Can be.
- FIG. 10 is a view showing a state of the contact point according to the change in the angle of the first tangential portion 7a in the anti-loosening screw structure according to the present invention
- FIG. 11 is a second anti-loosening screw structure according to the present invention. It is a figure which shows the state of a contact point according to the angle change of the tangential part 7b.
- first and second tangential portions 7a and 7b are simultaneously threaded to each other. It can be in contact with, thereby forming a maximum fastening force.
- FIG. 12 is a graph showing the amount of change in the fastening torque according to the change in the angle of the first tangential portion in the thread structure for preventing loosening according to the present invention.
- the derivative value of the graph is rapidly increased between 4 ° and 6 ° of the first tangential part, and accordingly, a fastening force is significantly increased at 4 ° to 6 °.
- the non-loading side flank surface 11 of the screw thread 10 provided in the male screw portion 9a of the bolt 9 is provided.
- the first tangential portion 11a and the second tangential portion 11b are formed.
- the no-load side flanks 15 of the constituent threads 14 are not fastened in a state of being in surface contact with each other over a large area, but are made of the no-load side flanks 11 provided in the screw threads 10 of the bolt 9.
- the two tangential portions 11b and the circular arc portions 14a formed on the tops of the threads 14 of the object 13 are fastened in a point contact state.
- the load side flank 16 of the target object 13 and the load side flank 12 of the bolt 9 are closely contacted in surface contact, and the arc part formed in the top of the screw thread 14 provided in the target object 13 is provided.
- 14a strongly contacts the first tangential portion 11a and the second tangential portion 11b formed on the unloaded side flank 11 of the thread 10 provided in the bolt 9.
- the first tangential portion 11a formed on the unloaded side flank 11 of the threaded portion 10 provided on the bolt 9 has an arc portion 14a formed on the top of the threaded portion 14 provided on the object 13.
- the second tangential portion 11b are strongly in contact with each other, the arc portion 14a formed on the top of the thread 14 provided in the object 13 is connected to the first and second tangential portions 11a and 11b. Local deformation results in a firm fixation.
- T is the tightening torque
- q is the initial load in the form of axial force
- d p and d n are the diameters of the male and female threads
- ⁇ is the thread lead angle.
- ⁇ is a friction angle expressed by Equation 2 below.
- ⁇ p and ⁇ n are the coefficients of friction for male and female threads, respectively.
- the tightening force also changes according to the tightening torque value, and the tightening torque required for tightening is referred to the standard screw specification table.
- the tightening torque value changes according to the thread lead angle
- the tightening force formed according to the thread lead angle also changes. And such a fastening force change, it can be proved to have an anti-loosening effect during vibration.
- FIGS. 16 and 17 show the jig 50 and 60 for the vibration test used in this experiment.
- experimental conditions and the experimental process using the same are as follows.
- the assembly was then heated to a maximum operating temperature of ⁇ 5 ° C., specified in the nut's dimensional standards or drawings, and held at this temperature for 6 hours ⁇ 5 ° C.
- the assembly is then removed from the oven and slowly cooled to ambient temperature and the nut is removed.
- the spacer and the washer are fitted and the nut is assembled to the same bolt and tightened by applying the torque specified in the procurement specification. Then, loosen the nut so that the anti-loosening part is completely removed, mount the assembly in the block slot, repeat tightening and loosening three times, and tightening the same bolt four times.
- the assembly is then mounted in a suitable vibration generating device and the assembly is vibrated in a vibration region for 16 minutes 40 seconds, corresponding to 30,000 cycles. Then check that the assembly can move freely in the slot during the entire test.
- the first, second, and third products are the results of experiments on existing products, and the fourth is a product designed by the present invention.
- FIGS. 18 and 19 are views showing a processing tool for processing the loosening thread structure according to the present invention with a female thread.
- the processing tool shown in FIG. 18 is a processing tool formed in the form of a tab in which the cutting edge portion corresponding to the loosening thread structure of the present invention is spirally formed on the outer circumferential surface of the cylindrical body, and the processing tool shown in FIG. It is formed in the form of a cutting bite.
- the anti-loosening screw structure according to the present invention can be easily machined on the inner circumferential surface of the nut or the inner circumferential surface of the hole formed in the object.
- 20 to 23 are views showing a processing tool for processing the thread structure for preventing loosening according to the present invention with a male screw.
- the processing tool shown in FIG. 20 is formed in a die shape in which a cutting edge portion corresponding to the loosening thread structure according to the present invention is radially formed on an inner circumferential surface of the body, and the processing tool shown in FIG. 21 is formed in a cutting bite shape. do. And the processing tool shown in FIG. 22 and FIG. 23 is each formed in the form of a rolling die.
- the anti-loosening screw structure according to the present invention can be easily machined on the outer circumferential surface of the bolt or the outer circumferential surface of the object to be cylindrical.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bolts, Nuts, And Washers (AREA)
- Transmission Devices (AREA)
- Connection Of Plates (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
규격 | 피치 | 산높이 | 외경 | 유효경 | 골지름 |
M1 | 0.25 | 0.135 | 1 | 0.838 | 0.729 |
M2 | 0.4 | 0.217 | 2 | 1.740 | 1.567 |
M3 | 0.5 | 0.271 | 3 | 2.675 | 2.459 |
M4 | 0.7 | 0.379 | 4 | 3.545 | 3.242 |
M5 | 0.8 | 0.433 | 5 | 4.480 | 4.134 |
M6 | 1 | 0.541 | 6 | 5.350 | 4.917 |
M7 | 1 | 0.541 | 7 | 6.350 | 5.917 |
M8 | 1.25 | 0.677 | 8 | 7.188 | 6.647 |
M9 | 1.25 | 0.677 | 9 | 8.188 | 7.647 |
M10 | 1.5 | 0.812 | 10 | 9.026 | 8.376 |
M11 | 1.5 | 0.812 | 11 | 10.026 | 9.376 |
M12 | 1.75 | 0.947 | 12 | 10.863 | 10.106 |
M14 | 2 | 1.083 | 14 | 12.701 | 11.835 |
1 | 2 | 3 | 4 |
A사 | B사 | C사 | 본원발명 |
28050cycles | 22740cycles | 16050cycles | 30000cycles |
Claims (9)
- 일정한 피치를 갖는 나사산이 구비되며 각 나사산의 양측면에는 나사산의 진입방향 빗면을 이루는 무부하측 플랭크면과 나사산의 후퇴방향 빗면을 이루는 부하측 플랭크면이 형성되는 나사산 구조에 있어서,상기 나사산의 무부하측 플랭크면은, 대응되는 상대 체결물의 나사산 정상에 형성된 원호부에 접하는 제1접선부; 및 상기 제1접선부로부터 기 설정된 각도를 이루며, 상기 원호부에 접하는 제2접선부;를 포함하는 풀림방지용 나사산 구조.
- 제1항에 있어서, 상기 제1접선부 및 상기 제2접선부는 대응되는 상대 체결물과 체결된 상태에서 상기 원호부에 동시에 접하여 밀착되는 풀림방지용 나사산 구조.
- 제1항에 있어서, 상기 제2접선부는 수평선에 대해 상기 제1접선부보다 큰 각도를 가지도록 형성된 풀림방지용 나사산 구조.
- 제1항에 있어서, 상기 제1접선부 및 상기 제2접선부는 수평선에 대해 상기 부하측 플랭크면보다 작은 각도를 가지도록 형성된 풀림방지용 나사산 구조.
- 제1항에 있어서, 상기 나사산은 국제표준을 만족하는 치수로 형성되며, 상기 제1접선부는 수평선에 대해 4° 내지 6° 사이의 각도를 가지는 풀림방지용 나사산 구조.
- 제5항에 있어서, 상기 제1접선부는 수평선에 대해 5°의 각도를 가지는 풀림방지용 나사산 구조.
- 제5항에 있어서, 상기 제2접선부는 수평선에 대해 35°의 각도를 가지는 풀림방지용 나사산 구조.
- 제1항 내지 제7항 중 어느 한 항의 풀림방지용 나사산 구조를 암나사로 가공하기 위한 풀림방지용 나사산 가공공구.
- 제1항 내지 제7항 중 어느 한 항의 풀림방지용 나사산 구조를 수나사로 가공하기 위한 풀림방지용 나사산 가공공구.
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MYPI2017703700A MY187432A (en) | 2015-04-07 | 2016-01-05 | Screw thread structure for preventing being pulled out and tool for manufacturing same |
US15/541,022 US10871182B2 (en) | 2015-04-07 | 2016-01-05 | Screw thread structure for preventing being pulled out and tool for manufacturing same |
EP16776731.8A EP3282139B1 (en) | 2015-04-07 | 2016-01-05 | Screw thread structure for preventing being pulled out and tool for manufacturing same |
JP2017554224A JP6469888B2 (ja) | 2015-04-07 | 2016-01-05 | 緩み防止用ねじ山構造及びその加工工具 |
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KR1020150048798A KR101556265B1 (ko) | 2015-04-07 | 2015-04-07 | 풀림방지용 나사산 구조 및 그 가공공구 |
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US (1) | US10871182B2 (ko) |
EP (1) | EP3282139B1 (ko) |
JP (1) | JP6469888B2 (ko) |
KR (1) | KR101556265B1 (ko) |
CN (1) | CN106050861B (ko) |
MY (1) | MY187432A (ko) |
WO (1) | WO2016163628A1 (ko) |
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JP6684312B2 (ja) * | 2018-06-19 | 2020-04-22 | 株式会社八幡ねじ | ゆるみ防止金属製雄ねじ |
CN109654102A (zh) * | 2018-11-28 | 2019-04-19 | 浙江捷能汽车零部件有限公司 | 与楔形防松螺纹的内螺纹配合的外螺纹结构 |
CA3200098A1 (en) * | 2020-10-30 | 2022-05-05 | DePuy Synthes Products, Inc. | Bone plates having multi-use screw holes for locking and compression screws |
KR102278921B1 (ko) * | 2021-03-22 | 2021-07-19 | 김선태 | 소착방지 볼트 전조용 금형 |
KR20230018648A (ko) | 2021-07-30 | 2023-02-07 | 주식회사 대한볼트 | 풀림방지 나사산 가공용 다이스 |
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JP6469888B2 (ja) | 2019-02-13 |
CN106050861B (zh) | 2018-09-07 |
EP3282139A4 (en) | 2019-01-02 |
KR101556265B1 (ko) | 2015-09-30 |
MY187432A (en) | 2021-09-22 |
EP3282139A1 (en) | 2018-02-14 |
EP3282139B1 (en) | 2020-06-10 |
CN106050861A (zh) | 2016-10-26 |
US20180003212A1 (en) | 2018-01-04 |
JP2018508728A (ja) | 2018-03-29 |
US10871182B2 (en) | 2020-12-22 |
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