WO2006126742A1 - ボルト締め付け方法およびボルト締め付け装置 - Google Patents
ボルト締め付け方法およびボルト締め付け装置 Download PDFInfo
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- WO2006126742A1 WO2006126742A1 PCT/JP2006/311040 JP2006311040W WO2006126742A1 WO 2006126742 A1 WO2006126742 A1 WO 2006126742A1 JP 2006311040 W JP2006311040 W JP 2006311040W WO 2006126742 A1 WO2006126742 A1 WO 2006126742A1
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- WIPO (PCT)
- Prior art keywords
- bolt
- tightening
- lateral load
- head
- port
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000006073 displacement reaction Methods 0.000 claims description 36
- 238000001514 detection method Methods 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 239000003381 stabilizer Substances 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 241000566113 Branta sandvicensis Species 0.000 description 1
- 241000206607 Porphyra umbilicalis Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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
- F16B39/284—Locking by means of elastic deformation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/065—Arrangements for torque limiters or torque indicators in screw or nut setting machines
- B23P19/066—Arrangements for torque limiters or torque indicators in screw or nut setting machines by electrical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49947—Assembling or joining by applying separate fastener
- Y10T29/49963—Threaded fastener
Definitions
- the present invention relates to a bolt tightening method for fastening each component to be fastened using bolts, and a bolt tightening for realizing the bolt tightening method.
- the present invention relates to a bolt fastening method and a bolt fastening device that realizes the bolt fastening method.
- One method for fastening a plurality of parts to be fastened together is to fasten each part to be fastened using bolts.
- bolts to fasten the parts to be fastened to each other use bolts to prevent slippage between the parts to be fastened, especially when a shear external force is applied, by friction joining between the parts to be fastened.
- bolt axial force the force in the bolt axis direction
- the friction coefficient stabilizer is attached to a fastening material such as a screw part to stabilize the friction coefficient at the time of fastening the screw part. It has been shown that the friction coefficient value can be given and that problems such as looseness and breakage of fastening materials such as screw parts can be solved. Inexpensive invention
- the expression “the screw part is self-supporting” means that the male screw part engages with the female screw part when the male screw part of the bolt is inserted into the female screw part from the vertical direction (Hereinafter referred to as the screw surface)
- the friction coefficient of the bolt is too small, even though the rotational torque is not applied to the bolt head, the bolt will not rotate only by its own weight. Intended
- the present invention is the same as reducing the friction coefficient of the screw surface without changing the friction coefficient of the screw surface in order to increase the axial force of the bolt generated when tightening the port.
- An object of the present invention is to provide a bolt tightening device.
- the bolt tightening method for fastening a fastened body using a port having a port head and a bolt shaft portion having a male screw portion the bolt In a state where a lateral load parallel to the bolt seat surface is applied to the head of the pole rod in order to intentionally bias the surface pressure of the screw surface and the bolt seat surface brought about when tightening
- a bolt tightening method characterized in that a rotational torque for rotating the portion is applied to the bolt head and the bolt is tightened.
- a lateral load parallel to the port seating surface is applied to the bolt head to thereby provide a surface of the screw surface and the bolt seating surface.
- a rotational torque that rotates the male screw of the bolt is applied to the Porto head, and the bolt is tightened.
- the bolt axis is aligned with the perpendicular to the bolt seat surface. While tilting at a very small angle but with a predetermined angle, and tilting the bolt head with a predetermined angle but with a very small angle with respect to the bolt seat surface, Bolts can be tightened, so that it is possible to bias the surface pressure of the screw surface and the bolt seat surface brought about when tightening the port to a desired state.
- the male screw part and the female screw part are caused by the frictional force generated according to the friction coefficient of the nene surface itself. Can be maintained.
- the friction coefficient stabilizer is used without being restricted by the self-supporting screw, which is a problem when using a friction coefficient stabilizer to increase the bolt axial force. Compared with the case, it is possible to bring higher port force.
- the threaded surface is intended to be a surface where the male threaded portion of Porto and the female threaded portion corresponding to the male threaded portion are engaged.
- the bolt seat surface is intended to be a surface where the fastened body and the bolt head are engaged, and a washer such as a flat washer or a panel washer is disposed between the bolt head and the fastened body. In this case, the face where the washer and the port or the washer and the fastened body are engaged is intended.
- the female threaded portion that engages with the male threaded portion is disposed in the female threaded portion so as to be inclined with respect to the normal force of the axial force ⁇ ⁇ tilting surface.
- the bolt tightening method according to claim 1 is provided.
- the central axis of the female threaded portion that engages with the male threaded portion of the bolt rod is disposed so as to be inclined at a predetermined angle with respect to the perpendicular of the pole seat surface.
- the bolt shaft is tilted at a predetermined angle with respect to the normal of the bolt seat surface, and the bolt head is tilted at a predetermined angle with respect to the seat surface. It can be tightened.
- the central axis of the female screw portion engaged with the male screw portion should be inclined with respect to the perpendicular of the bolt seat surface, and one of the threads of the H screw portion. 3.
- the central axis of the female screw portion is made perpendicular to the bolt seat surface. Tilt against.
- the male screw portion is formed such that a central axis of the male screw portion is inclined with respect to a central axis of the bolt head.
- the center axis of the male threaded portion of the port is formed to be inclined at a predetermined angle with respect to the center axis of the bolt head, so that the bolt head is Bolts can be tightened while tilting at a predetermined angle with respect to the surface.
- This makes it possible to apply a smaller lateral load to the Porto head than when using bolts where the center axis of the male threaded part of the bolt is aligned with the center axis of the bolt head. It is possible to bias the surface pressure of the screw surface and the bolt seat surface that are brought about when tightening the screw to a desired state.
- the bolt shaft portion is formed with a hole in a part thereof.
- a method for tightening a port according to claim 1 is provided.
- an appropriate hole is provided in the bolt shaft.
- the bending resistance of the port shaft portion against lateral loads parallel to the bolt bearing surface can be reduced.
- a smaller lateral load is applied to the bolt head, resulting in screw surfaces and bolt bearing surfaces that are provided when tightening the bolts. It is possible to bias the surface pressure of the lens to a desired state.
- the lateral load applied in parallel to the bolt seat surface intentionally biases the surface pressure of the screw surface and the bolt seat surface, and the 2.
- the male screw portion is rotated by a tightening rotation torque applying means for applying a rotational torque to the Porto head for rotating the male screw portion, and the tightening rotation torque applying means.
- a lateral load applying means for applying a lateral load parallel to the port seat surface to the bolt head in order to intentionally bias the resulting surface pressure of the screw surface and the bolt seat surface.
- the bolt tightening device has a lateral load applying means for applying a lateral load parallel to the bolt seat surface to the bolt head in order to intentionally bias the surface pressure of the screw surface and the bolt seat surface.
- the surface pressure of the screw surface and the seat surface brought about when the screw is tightened can be biased to a desired state, and the actual time when the bolt is tightened
- the center of rotation of the bolt can be moved from the port shaft toward the high pressure side of the thread surface and bolt seat surface.
- the torsional stress generated in the screw part can be reduced, the tensile allowable stress of the screw part can be fully exerted, and the limit bolt axial force that yields can be increased. It becomes possible to increase the axial force.
- the male threaded portion is caused by the frictional force generated according to the friction coefficient of the screw surface itself.
- the female screw part can be maintained, and a higher bolt axial force can be produced as compared with the case where a friction coefficient stabilizer is used.
- the lateral load applying means is configured such that the port is tightened by the tightening rotational torque applying means.
- Displacement detecting means for detecting parallel movement of the bolt head with respect to the bolt seat surface, and based on the parallel movement of the bolt head with respect to the bolt seat surface detected from the displacement detecting means,
- a lateral load control means for controlling a lateral load, while intentionally biasing the surface pressure of the screw surface and the bolt seat surface when tightening the port, and the bolt head is The lateral load is controlled by the lateral load control means so that the bolt can be tightened while sliding parallel to the port seating surface.
- the bolt fastening device described in 7 is provided.
- the lateral load applying means includes the displacement detection means and the lateral load control means, the surface pressure of the screw surface and the bolt seat surface is intentionally biased when tightening the port.
- the bolt can be tightened with the bolt head sliding in parallel to the bolt seating surface.
- the port can be tightened with the surface pressure of the screw surface and the bolt seat surface intentionally biased, and the friction coefficient of the screw portion itself can be changed.
- the same effect is achieved in that the bolt axial force can be increased.
- Fig. 1 is a diagram showing one state of the bolt before a lateral load parallel to the bolt seat is applied to the bolt head.
- Fig. 2 shows that the lateral load parallel to the bolt seating surface starts from the state shown in Fig. 1 '. It is a figure which shows the state of the volt
- FIG. 3 is a diagram showing a first embodiment for realizing the porting tightening method of the present invention.
- FIG. 4 is a diagram showing a more specific embodiment of the tightening rotational torque applying means and the lateral load applying means of the first embodiment shown in FIG.
- FIG. 5 is a view showing the female thread portion in the second embodiment for realizing the porting tightening method of the present invention.
- FIG. 6 is a view showing a female screw portion in the third embodiment for realizing the bolt fastening method of the present invention.
- FIG. 7 is a view showing a male thread portion in the fourth embodiment for realizing the porting tightening method of the present invention.
- FIG. 8 is an assembly diagram of the port according to the fourth embodiment and a rotating hammer that is a bolt fastening device that can synchronize the direction of application of the lateral load applied to the Porto head with the rotation of the bolt. is there.
- FIG. 9 is a cross-sectional view of the rotary hammer device taken along line A_A in FIG.
- FIG. 10 is a view showing a male screw portion in a fifth embodiment for realizing the method for tightening a porcelain of the present invention.
- FIG. 11 is a diagram showing a sixth embodiment for realizing the bolt tightening method of the present invention.
- FIG. 12 is a flow chart showing one embodiment of a bolt tightening control routine executed in the bolt tightening apparatus according to the present invention shown in FIG.
- Fig. 13 shows the parallel movement of the socket against the bolt seat when the port tightening control routine shown in Fig. 12 is executed. It is a figure which shows an example of the time transition of displacement.
- FIG. 1 is a diagram showing one state of the bolt before a lateral load parallel to the bolt seat surface is applied to the bolt head.
- 1 is a bolt
- 2 is a port head
- 3 is a port shaft
- 4 is a male screw provided on the port shaft 3
- 3 is a part to be fastened
- 6 is engaged with a male screw.
- 7 is a socket ⁇ ⁇ that transmits rotational torque to the bolt head 2
- 8 is a port seat surface that is a surface where the bolt head 2 and the component to be fastened 5 are engaged
- 9 is a male screw portion.
- Reference numeral 4 denotes a thread surface which is a surface where the female thread portion 6 engages
- 10 denotes a frictional joint surface between the parts to be fastened.
- Fig. 2 shows that from the state shown in Fig. 1, a lateral load parallel to the Porto seating surface 8 is applied to the Porto head 2, and further, a rotational torque that rotates the Porto head 2 is applied to the socket 7.
- a lateral load parallel to the port seating surface 8 is applied to the bolt head 2 via the socket 7, as shown in FIG. 1 1 is inclined with respect to the perpendicular 1 2 of the bolt bearing surface, and the Porto head 2 is inclined with respect to the bolt bearing surface 8.
- these inclinations are illustrated to clarify the state, but in reality, the angle 0 1 of these inclinations is very small, for example, 0.0 1 °. Is an angle.
- the present applicant applies a lateral load parallel to the port seating surface 8 to the bolt head 2 and biases the surface pressure of the bolt seating surface 8 and the screw surface 9 caused when the bolt 1 is tightened.
- the actual rotation center line also called the instantaneous rotation center line
- FEM finite element analysis
- the applicant first conducted a finite element method analysis to verify the behavior of the rotational torque necessary for tightening the port when a shear-type load was applied to the fastened parts fastened at the port. It went by.
- Applicant is an analytical model corresponding to the case where a shear-type load is applied to a body to be fastened with a bolt and the case where a shear-type load is not applied. 0. 0 0 5 Not an extremely small value of ⁇ 0.02, but an analytical model with a constraint condition that maintains the actual friction coefficient inherent to the bolt bearing surface and the screw surface, for example, about 0.1 is formed. And proof of this theory.
- the actual rotation center line of the bolt caused by the bias of the surface pressure of the Porto seat surface and the screw surface is ideally a straight line connecting the high surface pressure part of the Porto seat surface and the high surface pressure part of the screw surface. It is possible to become. This is because it is appropriate to consider that the part with high surface pressure is difficult to move and that the high surface pressure part rotates around the center of rotation.
- the bolt bearing surface it is difficult to conceive that the surface pressure bias of the screw surface is concentrated at a single point, and it is common to have a distribution over a certain area.
- the actual rotation center line of the bolt caused by the bias of the bolt seat surface and the screw surface is the straight line connecting the portion close to the high pressure surface portion of the bolt seat surface and the portion close to the high pressure surface portion of the screw surface.
- the actual rotation center line of the bolt which is caused by uneven surface pressure on the bolt seat surface and screw surface, is divided into a portion close to the high pressure surface portion of the bolt seat surface and a portion close to the high pressure surface portion of the bolt surface.
- this is a connecting line
- the center of rotation of Porto moves from the bolt axis toward the high pressure area
- the shortest distance from the center of rotation of Porto to the high pressure area is It will be shorter and this will easily lead to an explanation of the phenomenon that the rotational torque required to rotate the port is smaller. If it is assumed that the actual bolt rotation center line moves in a direction away from the high contact pressure part, the shortest distance from the rotation center axis of the bolt to the high contact pressure part becomes longer, and the port rotates. The torque required to make it increase should be inconsistent with the analysis results
- the surface of the bolt seat surface 8 and the screw seat surface 9 is obtained by applying a lateral load to the bolt head 2 in the same manner as when a shear-type load is applied to the body to be fastened with bolts.
- the friction coefficient of the bolt bearing surface 8 and the screw surface 9 is maintained as the original friction coefficient, that is, the bolt bearing surface 8 and the screw surface.
- the friction coefficient of 9 is not set to an extremely small value such as 0.05 to 0.02
- the bolt head is moved by moving the rotation center line of the bolt from the bolt axis 11 toward the high pressure surface side. It was found that the torque required to rotate bolt 1 is lower than that in case 2 where no lateral load is applied.
- the torsional stress generated when the bolt is tightened should be reduced.
- the decrease in the rotational torque required when tightening the bolt reduces the torsional stress generated when tightening the bolt, and the tensile stress ⁇ corresponding to the bolt axial force is reduced. This is because the allowable range is wide. This increases the critical port axial force at which the bolt yields, and can provide a bolt shaft with a higher height than when no lateral load is applied to the bolt head 2. It becomes.
- the friction coefficient itself is not changed, but the tightening method is changed, specifically, the bias pressure on the bolt seat surface 8 and the screw surface 9 is biased.
- the male screw portion is caused by the frictional force generated according to the friction coefficient of the screw surface 9 itself. And the female threaded portion can be maintained.
- the friction coefficient stabilizer is used without being restricted by the self-supporting screw, which is a problem when using a friction coefficient stabilizer to increase the bolt axial force. Compared to the case, higher port axial force can be brought about.
- a higher bolt axial force provides a strong frictional joint at the frictional engagement surface 10 between each fastened part, and this strong frictional joint creates a shear external force. Therefore, it is possible to prevent slippage between the parts to be fastened when used, and thus prevent slippage between the parts to be fastened and prevent loosening of the rotation of the screw. Is possible o
- the male nen portion is inserted inclined with respect to the corresponding female screw portion, depending on the degree of the inclination.
- screwing is a problem.
- FIG. 3 shows a first embodiment for realizing the bolt tightening method of the present invention, in which 2 1 indicates a tightening rotational torque applying means and 2 2 indicates a lateral load applying means.
- the first embodiment shown in FIG. 3 is the most basic configuration for realizing the bolt tightening method of the present invention.
- Bolt 1 is a commonly used headed bolt, for example, a hexagonal headed bolt.
- the attached rotational torque applying means 2 1 plays a role of applying a tightening rotational torque required for port tightening to the bolt head 2, and the lateral load applying means 2 2 is provided by the tightening rotational torque applying means 2.
- a lateral load parallel to the bolt seat surface 8 is always applied in one direction to the bolt head 2 via the socket 7.
- Torque is applied to the port head 2 and the bolt can be tightened. Therefore, while tilting the port axis 1 1 with respect to the normal 1 2 of the port seat surface with a predetermined angle, the bolt head 2 is brought into contact with the port seat surface 8.
- the bolt 1 can be tightened while tilting at a predetermined angle, but at a very small angle, and the surface pressure of the screw surface 9 and the bolt seat surface 8 brought about when the bolt 1 is tightened. Can be biased to a desired state.
- FIG. 4 A more specific embodiment of the tightening rotational torque applying means 21 and the lateral load applying means 22 is shown in FIG.
- 3 1 indicates a rotary drive
- 3 2 indicates a rotation controller
- 3 3 indicates a rotating shaft
- 3 4 indicates an electromagnet device
- 3 5 indicates a lateral load control unit
- 3 6 indicates a reaction force receiving unit.
- the tightening rotation torque applying means 21 includes a rotation drive device 31, a rotation controller 3 2, and a rotation shaft 3 3.
- the rotary drive 3 1 plays a role of generating a tightening rotational torque required when tightening the port 1, and various types of rotary drives such as an electric type and a compressed air type can be used.
- the rotation controller 3 2 plays a role of controlling the magnitude of the tightening rotation torque provided by the rotation driving device 3 1.
- the rotary shaft 3 3 is driven by the rotary drive 3 1 It plays the role of transmitting the resulting tightening torque to the socket 7.
- Tightening rotational torque applying means 2 1 Force S, rotary drive 3 1 and rotary shaft 3 3, so that when tightening the bolt, tightening rotational torque is socketed from rotary drive 3 1 through rotary shaft 3 3 7, and by having the rotation controller 3 2, it is possible to control the magnitude of the tightening rotational torque transmitted to the socket 7, thereby damaging Port 1. It is possible to prevent such an excessive tightening rotation torque from being transmitted to the socket 7.
- the lateral load applying means 2 2 includes an electromagnet device 3 4, a lateral load control unit 3 5, and a reaction force receiving unit 3 6.
- the magnet stone device 3 4 always applies a lateral load parallel to the bolt seat surface 8 to the socket 7 in one direction, and forcibly moves the socket 7 parallel to the bolt seat surface 8. It is.
- the lateral load control unit 35 plays a role of controlling the magnitude of the lateral load by the electromagnet device 34 applied to the socket 7.
- the reaction force receiving portion 3 6 plays a role of preventing relative movement of the electromagnet device 3 4 with respect to the bolt seat surface 8 .
- the socket 7 can be forcibly moved in parallel to the port bearing surface 8, so that the bolt axis line 1 1 can be tilted at a predetermined angle with respect to the perpendicular 1 2 of the bolt seat surface but at a predetermined angle, and the bolt head 2 can be tilted with respect to the bolt seat surface 8 very slightly. It is possible to incline at a predetermined angle but with a predetermined angle.
- lateral load applying means 2 2 force lateral load control unit 3 5
- the magnitude of the lateral load applied to the socket 7 and the timing for applying the lateral load to the socket 7 can be controlled.
- the rotational torque required to rotate bolt 1 is small, and it is considered unnecessary to apply a lateral load to socket 7 and approaches the final stage of bolt tightening.
- the second embodiment for realizing the bolt fastening method of the present invention is characterized in particular by the structure of the female screw portion 6 that engages with the male screw portion 4 of the bolt 1.
- FIG. 5 shows the female screw portion 6 in the second embodiment.
- the other components are the same as those of the first embodiment shown in FIG. 3, and the operational effects thereof are also the same.
- the female threaded portion 6 in the second embodiment shown in FIG. 5 is arranged such that the center line 4 1 of the female threaded portion 6 has an angle 0 3 with respect to the perpendicular line 1 2 of the bolt seat surface.
- the third embodiment for realizing the bolt fastening method of the present invention is particularly engaged with the male thread portion 4 of the port 1.
- FIG. 6 shows the female screw portion 6 in the third embodiment.
- the other components are the same as those in the first embodiment shown in FIG. 3, and the operational effects are also the same.
- the female screw portion 6 in the third embodiment shown in FIG. 6 is similar to the second embodiment in that the central axis 4 1 of the female screw portion 6 that engages with the male screw portion 4 is perpendicular to the bolt seat surface.
- particles are attached to a part of the screw thread of the female screw part 6, and preferably to one half-circumferential part of the screw part.
- the distribution of the surface pressure on the screw surface brought about during the port tightening is defined as the high surface pressure part at half the circumference of the screw part. The remaining half can be provided as a low surface pressure part.
- the particles may be attached to an appropriate place on the thread of the female thread portion 6 so as to bring the high surface pressure portion on the thread surface 9 to a desired place when the port 1 is tightened.
- the particles used are preferably fine particles such as metal or polymer in order to realize the inclination of the central axis 41 of the female screw portion 6 with high accuracy.
- the operational effect brought about by the central axis 41 of the female thread 6 having an angle 04 with respect to the perpendicular 12 of the bolt seat surface is the same as in the second embodiment.
- the fourth embodiment for realizing the port tightening method of the present invention is particularly characterized by the structure of a bolt, and the bolt in the fourth embodiment is shown in FIG.
- 50 is the port
- 5 1 is the bolt head
- 5 2 is the male threaded portion
- 5 3 is the central axis of the bolt head 51
- 5 4 is the central axis of the male threaded portion 52. Show.
- the male screw portion 5 2 in the fourth embodiment has a central axis 5 3 of the male screw portion having an angle ⁇ 5 with respect to the central axis 5 4 of the bolt head. It is formed.
- the port 50 when the port 50 is tightened by the tightening rotational torque applying means, the port head 51 is moved to the bolt seat.
- the bolt 50 can be tightened while being inclined at an angle with respect to the surface 8, so that the central axis of the bolt head is disposed parallel to the perpendicular of the bolt seat surface.
- the surface pressure of the screw surface 9 and the bolt seat surface 8 caused when the bolt 50 is tightened is biased to a desired state. Is possible.
- FIG. 8 shows a rotating hammer serving as a bolt tightening device that can synchronize the direction of lateral load applied to the bolt 50 of the fourth embodiment and the bolt head sound I; 5 1 with the rotation of the bolt 50.
- FIG. 9 is a cross-sectional view of the rotating hammer apparatus taken along line AA in FIG. 8 and 9, 6 1 is a rotating hammer device, 6 2 is a hammer, 6 3 is a roller bearing, 6 4 is a spring, 6 5 is a socket, 6 6 is a groove, 6 7 is a rotating shaft, Respectively.
- the rotary hammer device 6 1 has a hammer 6 2, a socket 6 5 and a rotary shaft 6 7, and the non-mmer 6 2 has a roller bearing 6 3 and a spring 6 4.
- the socket 6 5 has a role to give the bolt head 5 1 the rotational torque necessary for tightening the bolt 50.
- In the outer surface of the socket 65 there is provided a groove 66 that collides with a mouth laver ring 63, which will be described later.
- the octammer 6 2 plays a role of transmitting a rotational torque to the port head 51 via the socket 65 and simultaneously applying a lateral load.
- the roller bearing 6 3 When the rotational torque required for tightening the bolt 50 becomes high and exceeds a certain value, the roller bearing 6 3 is disengaged from the groove 6 6 and is hammered until it encounters the groove 6 6 again. 6 2, slides on the outer surface of the socket 65, and encounters the groove 66 again, it is brought into collision with the groove 6 6 of the socket 65 by the urging force of the spring 64, so that the socket It is possible to simultaneously apply a rotational torque around the rotary shaft 6 7 and a lateral load that presses the socket 65 in parallel to the bolt seat surface 8 to the bolt 65. By repeatedly executing this operation, the bolt 50 can be completely tightened.
- the rotating hammer unit 61 by using the rotating hammer unit 61, the direction of the lateral load applied to the bolt head 51 can be synchronized with the rotation of the bolt 50, and the bolt ⁇ 50 can be tightened. In this case, even in the case of the fourth embodiment in which the engagement surface between the bolt head 51 and the bolt seat surface 8 moves with the rotation of the bolt, the bolt tightening method of the present invention can be realized. be able to.
- an external force is used. Even if a lateral load is not applied to the bolt head, when tightening the port, the bolt axis is inclined at an angle with respect to the normal of the port seat and / or the bolt head is bolted Bolts can be tightened while tilting at an angle to the seating surface.
- the bolt when a bolt is tightened without applying a lateral load due to external force, the bolt itself balances the screw surface and the high and low surface pressure portions of the screw surface and bolt seat surface that are brought about when the bolt is tightened. In other words, there is a high possibility of being tightened with a deformation that eliminates the unevenness of the surface pressure, and it is difficult to provide a high surface pressure portion in a desired region.
- the bolt tightening methods of the second to fourth embodiments also require that a lateral load due to external force be applied to the Porto head when tightening the bolt.
- a lateral load due to external force be applied to the Porto head when tightening the bolt.
- the fifth embodiment for realizing the bolt fastening method of the present invention is particularly characterized by the structure of the bolt.
- the bolt in the fifth embodiment is shown in FIG.
- 70 represents a bolt
- 7 1 represents a bolt head
- 7 2 represents a bolt shaft
- 7 3 represents a hole.
- the bolt of the bolt 70 in the fifth embodiment is formed with a hole portion 7 3 in its.
- the hole is formed with a hole portion 7 3 in its.
- the hole 7 3 may penetrate the bolt shaft 7 2.
- a recess provided on the side surface of the port shaft portion 73 that does not penetrate the bolt shaft portion 73 may be used.
- the port shaft 7 2 has the hole 7 3, compared to the case where there is no hole in the bolt h shaft, the lateral load applied to the bolt head 7 1 can be reduced.
- the porch shaft part 7 2 is easily bent and deformed. Therefore, compared to the use of a bolt without a hole in the bolt shaft part, a smaller lateral load is applied to the bolt head part 71. Therefore, it is possible to bias the surface pressure of the screw surface and the bolt seat surface brought about when tightening the port 70 to a desired state.
- the lateral load applying means for applying a lateral load parallel to the bolt seat surface to the Porto head includes displacement detecting means for detecting a parallel movement of the bolt head with respect to the Porto seat surface, and the displacement And a lateral load control means for controlling the lateral load based on the parallel movement of the bolt head with respect to the bolt seat surface detected by the detection means.
- the porting tightening method of the present invention it is possible to tighten the port with a smaller tightening rotational torque by applying a lateral load parallel to the port seat surface to the bolt head when tightening the bolt.
- this effect may not be sufficiently obtained.
- the lateral load parallel to the Porto seat is excessively applied to the Porto head, It may be strongly pressed against the edge of the bolt hole provided and unexpectedly large friction may occur due to the surface condition of the contact part between the bolt shaft and the edge of the bolt hole.
- tightening the bolt while applying a lateral load parallel to the bolt seating surface to the bolt head has the effect of enabling the bolt to be tightened with a smaller tightening rotational torque. It is conceivable that it cannot be obtained sufficiently.
- the lateral load applying means has the displacement detection means and the lateral load control means, so that when tightening the bolt, the screw surface and the bolt The bolt can be tightened with the surface pressure of the surface deliberately deviated and with the pole head sliding in parallel with the bolt seat surface.
- the bolt shaft is not strongly pressed against the edge of the bolt hole provided in the member to be fastened. It is also considered that there is no contact between the port shaft and other parts other than the edge of the bolt hole, which greatly hinders the reduction of the tightening torque of the bolt.
- the lateral load applying means includes the displacement detection means and the lateral load control means
- the surface pressure of the screw surface and the port seat surface is intentionally biased
- a lateral load parallel to the bolt seat surface is generated. Because it is excessively applied to the bolt head, the port shaft is strongly pressed against the edge of the bolt hole provided in the fastened member, and the contact portion between the bolt shaft and the edge of the bolt hole Unexpectedly large friction due to each surface condition can be prevented.
- the lateral load applying means has the displacement detection means and the lateral load control means, it is possible to tighten the bolt while the bolt head slides parallel to the bolt seat surface.
- the tightening rotational torque required for tightening the port is Compared to the above, it is possible to further reduce, and it is possible to increase the axial force of the bolt axial force generated when the bolt is tightened.
- FIG. 11 is a diagram showing a sixth embodiment for realizing the method of tightening the port of the present invention.
- 1 3 1 is a rotary drive
- 1 3 2 is a rotation controller
- 1 3 3 is a rotating shaft
- 1 3 4 is an electromagnet device
- 1 3 5 is a lateral load control unit
- 1 3 6 is a reaction force
- the receiving part and 1 3 7 indicate displacement sensors, respectively.
- the tightening rotational torque applying means that plays the role of applying the tightening rotational torque necessary for bolting to the Porto head 2 is the rotary driving machine 1 3 1, rotating It has a controller 1 3 2 and a rotating shaft 1 3 3.
- the rotary drive machine 1 3 1 plays the role of generating the tightening rotational torque required when tightening the bolt 1 and is used by various types of rotary drive machines such as electric type and compressed air type. Can be done.
- the rotation controller 1 3 2 plays a role of controlling the magnitude of the tightening rotational torque provided by the rotary drive machine 1 3 1. Times
- the rotating shaft 1 3 3 plays a role of transmitting the tightening rotational torque generated by the rotary drive machine 1 3 1 to the socket 7.
- the tightening rotational torque applying means includes the rotary drive machine 1 3 1 and the rotary shaft 1 3 3, so that when tightening the bolt, the tightening rotational torque is socketed from the rotary drive machine 1 3 1 through the rotary shaft 1 3 3. , And the rotation controller 1 3 2 can control the magnitude of the tightening rotational torque transmitted to the socket 7. Excessive tightening that could damage the rotation Torque Torque transmission to socket 7 can be prevented.
- the lateral load applying means includes a displacement detection means and a lateral load control means.
- the displacement detection means serves to detect the parallel movement of the port head 2 with respect to the bolt seat surface 8 when the bolt 1 is tightened by the tightening rotational torque applying means.
- the displacement detection means has a displacement sensor 1 3 7 for detecting the amount of parallel movement of the socket 7 with respect to the bolt seat surface 8 when the port 1 is tightened, that is, the displacement amount.
- the parallel movement of the bolt head 2 with respect to the bolt seating surface 8 is detected based on information detected from 1 1 3 7, for example, a change state of the displacement amount.
- the lateral load control means controls the lateral load parallel to the bolt seat surface 8 applied to the bolt head 2 based on the parallel movement of the bolt head 2 to the bolt seat surface 8 detected from the displacement detection means. It plays a role.
- the lateral load control means includes an electromagnet device 1 3 4, a lateral load control unit 1 3 5, and a reaction force receiving unit 1 3 6.
- Electromagnet device 1 3 4 has a lateral load parallel to socket 7 and bolt seat 8
- the socket 7 is forcibly moved in parallel to the port seating surface 8.
- the electromagnet device 1 3 4 is configured so that a lateral load parallel to the bolt seat surface 8 can be applied to the socket 7 from an arbitrary direction.
- a lateral load parallel to the pole saddle surface 8 can be applied to the bolt head 2 from an arbitrary direction.
- the lateral load control unit 1 3 5 is based on the parallel movement of the port head 2 detected by the displacement means with respect to the bolt seating surface 8 and the magnitude of the lateral load by the electromagnet device 3 4 applied to the socket 7. It plays a role in controlling the height. Specifically, when the bolt 1 is tightened, the lateral load control unit 1 3 5 intentionally biases the surface pressure of the screw surface 9 and the bolt seat surface 8 and the bolt head 2 is bolted. The lateral load applied to the socket ⁇ 7 is controlled so that the bolt 1 can be tightened while sliding parallel to the seat surface 8.
- the reaction force receiving portion 1 3 6 plays a role of preventing the relative movement of the electromagnet device 1 3 4 with respect to the bolt seating surface 8.
- the electromagnet device 1 3 4 when the bolt is tightened, is configured to be temporarily fixed according to the shape of the fastened body.
- FIG. 12 is a flowchart showing an embodiment of a port tightening control routine executed in the bolt tightening apparatus according to the present invention shown in FIG.
- the lateral load is applied to the bolt head 2 by the lateral load applying means, and the bolt head 2 port is determined based on the detection information from the displacement sensor 1 1 7.
- the presence or absence of parallel movement with respect to the seating surface 8 is detected, and when there is such movement, the bolt head 2 is applied with a lateral load by displacement control and the bolt Tightening is performed.
- the lateral load control means controls the lateral load application direction to the bolt head 2 to be changed. For example, bolt head
- the direction of the lateral load applied to 2 is controlled so that it is completely opposite to the lateral load direction applied up to now.
- the surface pressure of the screw surface and the bolt seat surface is intentionally biased, and the Porto head is sliding parallel to the bolt seat surface. It becomes possible to tighten the bolt.
- Step 2 0 the bolt head 2 is seated on the port seat 8 so that the bolt head 2 contacts the bolt seat 8.
- the washer or the like is arranged between the bolt head portion 2 and the bolt bearing surface 8, that bolt head 2 is seated so the bolt head 2 is brought into contact with the washer or the like Become.
- the process proceeds to the next step 2 0 2.
- a lateral load parallel to the bolt seat surface 8 is applied to the bolt head 2 by the lateral load applying means.
- the lateral load applying means applies a lateral load parallel to the port seating surface 8 to the socket 7 and transmits the lateral load to the bolt head 2 via the socket 7.
- a lateral load parallel to the bolt bearing surface 8 is applied to the bolt head 2.
- step 20 3 the presence / absence of parallel movement of the port head 2 with respect to the bolt seat surface 8 is detected based on the detection information from the displacement sensor 1 37 and the start of the movement is confirmed.
- the displacement sensor 1 3 7 detects the amount of parallel movement of the socket 7 with respect to the bolt seat surface 8 in m units, that is, the amount of displacement, and based on the change state of this displacement amount, the port seat surface 8 of the Porto head 2 It is confirmed that a parallel movement with respect to or has started.
- the state where there is a parallel movement of the bolt head 2 with respect to the port seat surface 8 is a state where the bolt head 2 is moving in parallel while being in contact with the bolt seat surface 8, that is, the bolt Corresponding to the state where the head 2 slides parallel to the bolt seating surface 8.
- step 20 3 it is confirmed that the parallel movement of the ball head 2 with respect to the port seat 8 has started.
- step 204 the bolt is tightened by the tightening rotational torque applying means while the lateral load by the displacement control is applied to the port head 2 by the lateral load control means. Also, changes in lateral load when the bolts are tightened are monitored.
- the lateral load by displacement control is a lateral load that is controlled so that the amount of parallel movement per unit time with respect to the port seating surface 8 of the bolt head 2, that is, the amount of displacement is constant. That is, the lateral load is controlled by the lateral load control means so that the amount of parallel movement per unit time with respect to the port seat surface 8 of the bolt head 2, that is, the amount of displacement is constant.
- the parallel movement of the bolt head 2 with respect to the port seating surface 8 after the start of the parallel movement of the bolt head 2 with respect to the bolt seating surface 8 is confirmed.
- Lateral load is applied so that the amount of parallel movement per unit time of the socket 7 of the socket 7 detected by the displacement detection sensor 1 37 is constant, corresponding to the parallel movement with respect to the surface 8.
- the lateral load is controlled by the control means.
- the bolts are tightened by means of tightening rotational torque.
- the change in the lateral load when the bolt is tightened depends on the lateral load control of the lateral load control means. Monitored by controls 1 3 5
- Step 2 0 5 following Step 2 0 4 it is determined whether or not the parallel movement of the Porto head 2 with respect to the bolt seat surface 8 is stopped during the bolt tightening in Step 2 0 4. Whether or not the parallel movement of the bolt head part 2 with respect to the bolt seating surface 8 is stopped may be determined by the displacement detection means based on the detection information from the displacement sensor 1 37, or the displacement control is performed. It may be judged by the presence or absence of a sudden change in the lateral load.
- Step 2 0 6 the lateral load control means performs the bolt head operation. It is controlled so that the direction of lateral load applied to 2 can be changed. In the present embodiment, the direction of the lateral load applied to the bolt head 2 is reversed, and the direction is controlled to be completely opposite to the lateral load direction applied up to now. As a result, when the port is tightened, the surface pressure of the screw surface and the bolt seat surface is intentionally biased, and the bolt head 2 slides parallel to the port seat surface 8. It is possible to tighten the bolt in the state of being.
- Step 2 0 5 if it is confirmed that there is no stop of the parallel movement of the bolt head 2 with respect to the Port seat 8, proceed to Step 2 0 7 to check whether the bolt tightening rotational torque has reached a predetermined value. It is judged by the rotation controller 1 3 2 of the tightening rotation torque applying means. When it is determined that the bolt tightening rotational torque has reached the predetermined value, this control routine is terminated.
- FIG. 13 shows an example of the movement of the socket 7 parallel to the port seat 8 when the port tightening control routine shown in Fig. 12 is executed.
- FIG. Region a shown in Fig. 13 corresponds to the displacement of socket 7 in step 2 0 2.
- the region b shown in Fig. 1 3 corresponds to Step 2 0 3 to Step 2 0 4.
- a lateral load by displacement control is applied to the bolt head 2 by the lateral load control means, and the Port head 2 is slid in parallel with the bolt seat surface 8 while being applied to the tightening rotational torque applying means.
- the bolt is tightened. Therefore, the parallel movement of the socket 7 with respect to the port bearing surface remains constant per unit time.
- the region c shown in Fig. 1 3 corresponds to the case where in Step 2 0 5, it is confirmed that the parallel movement of the port head 2 with respect to the bolt seat 8 is stopped.
- the bolt shaft portion is strongly pressed against the edge of the bolt hole provided in the fastened member, and the bolt head 2 A case where the parallel movement with respect to the bolt seat 8 stops is conceivable.
- the area d shown in Figure 13 corresponds to step 2 06.
- the direction of the lateral load applied to Porto head 2 is reversed and applied to the present. It is controlled so that it is in the opposite direction to the lateral load direction. Therefore, the parallel movement of the socket 7 with respect to the port seating surface 8 is the reverse movement of the b region.
- the screw surface and the port seat are The bolt can be tightened while the surface pressure of the surface is intentionally biased and the bolt head slides parallel to the bolt seat surface.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Bolts, Nuts, And Washers (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2006250323A AU2006250323B2 (en) | 2005-05-26 | 2006-05-26 | Bolt fastening method and bolt fastening device |
CA2608330A CA2608330C (en) | 2005-05-26 | 2006-05-26 | Bolt tightening method and bolt tightening device |
US11/920,553 US7836794B2 (en) | 2005-05-26 | 2006-05-26 | Bolt fastening method and bolt fastening device |
EP06766425A EP1884310B1 (en) | 2005-05-26 | 2006-05-26 | Bolt tightening method and bolt tightening device |
BRPI0611033-9A BRPI0611033A2 (pt) | 2005-05-26 | 2006-05-26 | método de fixação de parafuso e dispositivo de fixação de parafuso |
CN2006800089269A CN101146647B (zh) | 2005-05-26 | 2006-05-26 | 螺栓紧固装置 |
JP2006549734A JP4386076B2 (ja) | 2005-05-26 | 2006-05-26 | ボルト締め付け方法およびボルト締め付け装置 |
KR1020077020057A KR100875884B1 (ko) | 2005-05-26 | 2006-05-26 | 볼트 조임방법 및 볼트 조임장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005154479 | 2005-05-26 | ||
JP2005-154479 | 2005-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006126742A1 true WO2006126742A1 (ja) | 2006-11-30 |
Family
ID=37452149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/311040 WO2006126742A1 (ja) | 2005-05-26 | 2006-05-26 | ボルト締め付け方法およびボルト締め付け装置 |
Country Status (10)
Country | Link |
---|---|
US (1) | US7836794B2 (ja) |
EP (1) | EP1884310B1 (ja) |
JP (1) | JP4386076B2 (ja) |
KR (1) | KR100875884B1 (ja) |
CN (1) | CN101146647B (ja) |
AU (1) | AU2006250323B2 (ja) |
BR (1) | BRPI0611033A2 (ja) |
CA (1) | CA2608330C (ja) |
RU (1) | RU2359812C1 (ja) |
WO (1) | WO2006126742A1 (ja) |
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JP2008298264A (ja) * | 2007-06-04 | 2008-12-11 | Eco World Co Ltd | ボルト・ナットの締結方法とその締付構造 |
JP2009299882A (ja) * | 2008-06-10 | 2009-12-24 | Wakai & Co Ltd | 自穿孔ねじ |
CN118148997A (zh) * | 2023-03-29 | 2024-06-07 | 拉萨誉致信科技有限公司 | 一种防松紧固组件 |
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US8327741B2 (en) * | 2010-02-03 | 2012-12-11 | Chihching Hsieh | Torque wrench and method for determining rotational angle of torque wrench |
JP5592854B2 (ja) * | 2011-08-24 | 2014-09-17 | トヨタ自動車株式会社 | 締付装置 |
CN103807272B (zh) * | 2012-11-14 | 2016-01-20 | 江西昌河航空工业有限公司 | 一种带自锁功能的螺钉 |
DE102014113263A1 (de) * | 2014-09-15 | 2016-03-17 | Broetje-Automation Gmbh | Verfahren zum Schrauben eines Schließrings auf einen Gewindebolzen |
JP6202042B2 (ja) * | 2015-04-27 | 2017-09-27 | トヨタ自動車株式会社 | ボルト回収装置、及びボルト回収システム |
CN109477765A (zh) * | 2016-06-30 | 2019-03-15 | 株式会社华尔卡 | 紧固实践装置、紧固实践方法、紧固实践程序和紧固实践系统 |
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CN113297711B (zh) * | 2021-07-28 | 2022-01-07 | 广东电网有限责任公司中山供电局 | 一种无源松动预警螺栓的结构优化方法及装置 |
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Also Published As
Publication number | Publication date |
---|---|
EP1884310B1 (en) | 2013-03-13 |
BRPI0611033A2 (pt) | 2010-08-10 |
US20090064828A1 (en) | 2009-03-12 |
CA2608330C (en) | 2011-01-25 |
CA2608330A1 (en) | 2006-11-30 |
AU2006250323A1 (en) | 2006-11-30 |
KR20070094987A (ko) | 2007-09-27 |
JPWO2006126742A1 (ja) | 2008-12-25 |
JP4386076B2 (ja) | 2009-12-16 |
US7836794B2 (en) | 2010-11-23 |
CN101146647B (zh) | 2011-06-08 |
EP1884310A1 (en) | 2008-02-06 |
KR100875884B1 (ko) | 2008-12-26 |
CN101146647A (zh) | 2008-03-19 |
AU2006250323B2 (en) | 2011-06-09 |
EP1884310A4 (en) | 2011-11-02 |
RU2359812C1 (ru) | 2009-06-27 |
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