WO2017090913A1 - Dispositif pour fixer des parties rotatives des deux extrémités d'une vis mère sphérique et appareil de déplacement linéaire le comprenant - Google Patents

Dispositif pour fixer des parties rotatives des deux extrémités d'une vis mère sphérique et appareil de déplacement linéaire le comprenant Download PDF

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Publication number
WO2017090913A1
WO2017090913A1 PCT/KR2016/012675 KR2016012675W WO2017090913A1 WO 2017090913 A1 WO2017090913 A1 WO 2017090913A1 KR 2016012675 W KR2016012675 W KR 2016012675W WO 2017090913 A1 WO2017090913 A1 WO 2017090913A1
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WO
WIPO (PCT)
Prior art keywords
ball screw
shaft
lead ball
bearing
coupler
Prior art date
Application number
PCT/KR2016/012675
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English (en)
Korean (ko)
Inventor
이종기
Original Assignee
이종기
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Filing date
Publication date
Application filed by 이종기 filed Critical 이종기
Publication of WO2017090913A1 publication Critical patent/WO2017090913A1/fr

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    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines

Definitions

  • the present invention relates to a device for fixing both ends of the lead ball screw and a linear motion device including the same.
  • Lead ball screw is a key component to position control and direction change in various automation equipments and is widely used throughout the industry.
  • the lead ball screw includes a long rod-shaped screw with a thread formed around its outer circumference and a ball nut coupled to the screw.
  • both ends of the screw 40a are individually processed (screw 42a, bearing mounting portion 42b, motor shaft connecting portion 42c, etc.) to connect a bearing, a motor, and the like.
  • screw 42a screw 42a, bearing mounting portion 42b, motor shaft connecting portion 42c, etc.
  • the rotational quality of the screw 40a was often uneven because the center of the machining site and the center of the screw did not coincide exactly.
  • one end of the screw is a fixed end (50a) and the other end is composed of a support end (60a), so that the high-speed rotation of the screw 40a is limited, it is necessary to improve this in both ends fixed method.
  • the motor shaft coupling must also be improved to more precisely match the center of rotation of each component.
  • the present invention provides a technique for fixing both ends of the screw of the linear motion device to match the center of rotation of the motor shaft and the screw to increase the rotation quality and higher speed rotation.
  • the rotating device for fixing both ends of the lead ball screw is to fix and support both ends of the lead ball screw, the first assembly for fixing one end of the lead ball screw to rotate and the other end of the lead ball screw And a second assembly for securely fixing the first assembly, wherein the first assembly includes a first pressing member for urging one end of the lead ball screw toward the second assembly as the first assembly is coupled. And a second pressing member for pressing the other end of the ball screw in the direction of the first assembly, and rotating the lid by pressing the lead ball screw in which the first pressing member and the second pressing member rotate in a direction facing each other. Even if an impact is applied to the ball screw in the axial direction, the lead ball screw does not generate axial push.
  • the first assembly includes a first housing, a first bearing disposed inside the first housing, and a first bearing shaft through which at least a portion of the lead ball screw is inserted and through which the at least one lead is inserted.
  • the first pressing member may be coupled to the first bearing shaft to press the lead ball screw in the direction of the second assembly.
  • the first bearing shaft includes a shaft flange through which the lead ball screw penetrates and has an incision formed from one edge to the opposite edge through the axis center, and the inner circumference surrounds and fixes the lead ball screw by narrowing the incision.
  • a shaft housing connected to the shaft flange and penetrating the first bearing and having an insertion hole into which the lead ball screw is inserted, and disposed on the upper and lower sides of the shaft center to penetrate the cutout and narrow the cutout. It may include a pair of flange tightening member, the first pressing member may be coupled to the shaft housing at the center of the shaft and press the lead ball screw toward the second assembly direction.
  • the first bearing may include a first thrust ball bearing and a second thrust ball bearing facing each other with the stepped inside of the housing, wherein the first thrust ball bearing is connected to the stepped direction by a motor shaft coupling device.
  • the second thrust ball bearing may be pressed in the stepped direction by the shaft flange.
  • the rotating device for fixing both ends of the lead ball screw may further include a motor shaft connecting device for power connecting the first bearing shaft and the motor.
  • the motor shaft coupling device includes a first coupler that can be coupled to a drive shaft of the motor, a second coupler engaged with the first coupler and coupled with the first bearing shaft, and an engagement of the first coupler and the second coupler. It may include a hub coupled to a location.
  • the inner circumference of the first coupler is smaller than the diameter of the drive shaft of the motor and may be coupled to the drive shaft while the first coupler is heated, and the inner circumference of the first coupler may be in close contact with the drive shaft by cooling.
  • the motor shaft connecting device may further include a tannery bolt fastened to the first coupler and in contact with the driving shaft.
  • the second assembly may include a second housing, a second bearing disposed inside the second housing, a second bearing shaft at least partially penetrating the second bearing, and the other end of the lead ball screw inserted therein and the second bearing shaft. And a lock nut coupled to and pressurizing the second bearing into the second housing.
  • the second bearing shaft has a cutout formed from one edge to the opposite edge past the center of the shaft, the shaft flange for tightening the lead ball screw while the lead ball screw penetrates and the inner circumferential diameter decreases as the cutout is narrowed, A pair of flanges connected to the shaft flange and penetrating the second bearing, the shaft housing into which the lead ball screw is inserted, and the upper and lower sides of the shaft center, respectively, penetrating the incision and narrowing the incision. It may include a tightening member, the second pressing member may be coupled to the shaft housing at the center of the shaft and may press the lead ball screw toward the first assembly direction.
  • the hub has a predetermined hardness and is made of polyurethane, and the ring member may be positioned between the boss of the first coupler and the second coupler to surround the pair of bite protrusions.
  • the second coupler has a cutout formed from one edge to the opposite edge through the center of the shaft, and is disposed on the upper and lower sides of the shaft center, respectively, and a pair of coupler tightening members penetrating the cutout and narrowing the cutout. Further, the inner circumference of the second coupler may be narrowed while the cutout is narrowed by tightening the coupler fastening member.
  • the lead ball screw may include a screw secured to the first assembly and the other end secured to the second assembly, and a ball nut coupled to the screw, the screw being coupled to the ball nut. Only helix grooves are processed, and individual machining parts such as planes, screw holes, and circles for engaging bearings, motor shafts, etc. may not be formed.
  • Motor shaft of both ends rotating part fixing device of the lead ball screw described above, both ends are fixed by both ends rotating device fixing device of the lead ball screw, both ends rotating device of the lead ball screw according to an embodiment of the present invention It includes a motor connected to the connecting device, a table connected to the ball nut of the lead ball screw, and a rotating device for fixing both ends of the lead ball screw and includes a base for guiding the movement of the table.
  • the first pressing member of the first assembly coupled with one end of the lead ball screw presses the one end toward the second assembly
  • the second pressing member of the second assembly coupled with the other end of the lead ball screw Presses the other end toward the first assembly.
  • the pressure of the first and second pressing members does not cause the lead ball screw to be pushed in the axial direction. Since both ends of the lead ball screw are pressurized and fixed, rotation quality of the lead ball screw may be increased and high speed rotation may be easily performed.
  • the thrust ball bearing supports the first bearing shaft and the second bearing shaft, shaking of the lead ball screw does not occur in the radial direction.
  • the diameter of the insertion hole is reduced while narrowing the spacing of the incision.
  • a pair of flange fastening members are disposed on the upper and lower sides with respect to the center of the shaft so that the diameter of the insertion hole is reduced in the concentric state.
  • the circumference of the insertion hole is in close contact with the outer surface of the filling member without being eccentric to one side.
  • FIG. 1 is a perspective view of according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of FIG. 1 taken along line II-II.
  • FIG. 3 is an exploded perspective view of the first assembly of FIG. 1.
  • FIG. 4 is an enlarged view of the first assembly of FIG. 2.
  • FIG. 5 is an enlarged view of the bearing shaft of FIG. 4.
  • FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 4.
  • FIG. 7 is an exploded perspective view of the second assembly of FIG. 1.
  • FIG. 8 is an enlarged view of the second assembly of FIG. 2.
  • FIG. 9 is a perspective view showing the motor shaft connecting device of FIG.
  • FIG. 10 is an exploded perspective view of FIG. 9;
  • FIG. 11 is a cross-sectional view taken along the line XI- of FIG. 9; FIG.
  • FIG. 12 is a cross-sectional view taken along the line XII- of FIG. 9.
  • FIG. 13 is a cross-sectional view taken along line XIII- of FIG. 9;
  • FIG. 14 is a perspective view showing an end processing state of a conventional lead ball screw.
  • Both ends of the lead ball screw fixing device and the motor shaft connecting device according to an embodiment of the present invention can be applied to the embodiment of the present invention, hereinafter will be described mainly the application of both ends of the rotating ball fixing device and the motor shaft connecting device of the lead ball screw.
  • Figure 1 is a perspective view showing according to an embodiment of the present invention
  • Figure 2 is a cross-sectional view taken along the line II-II.
  • the screw 42 of the lead ball screw 40 prevents radial shaking and axial sliding and prevents the center of the drive shaft 31 and the screw of the motor 30.
  • Aligning the center of the spiral groove of (42) (1) includes a motor 30, a lead ball screw 40, both ends of the lead ball screw fixing device and the motor shaft connecting device 70, the lead ball screw Both ends of the rotation fixing device includes a first assembly 50 and a second assembly (60).
  • the lead ball screw 40 includes a screw 42 having one end fixed to the first assembly 50 and the other end fixed to the second assembly 60 and a ball nut 41 coupled with the screw 42. do. Only the spiral groove for engaging with the ball nut 42 is machined in the screw 42. Thus, the two ends of the screw 42 are not formed with individual processing parts such as a plane, a screw hole, a circle, and the like for coupling with a bearing, a motor shaft, and the like. Only the screw groove is formed in the screw 42 according to the present embodiment. Since no individual machining is formed at both ends, the machining time of the screw 42 can be shortened, and the center of the screw groove and the motor shaft can be easily matched.
  • the spiral groove of the screw 42 may be machined by rolling or grinding.
  • Filling members 43a and 43b are coupled to the spiral grooves at one end and the other end of the rolled screw 42. However, the filling members 43a and 43b may not be coupled to the ground screw 42. In the present embodiment, the rolled screw 42 will be described below.
  • the ball nut 41 is connected to the table 20 placed on the base 10.
  • the table 20 may linearly move along the base 10 due to the movement of the ball nut 41.
  • the base 10 may be a body such as a processing apparatus.
  • a workpiece, a conveyed object, and the like may be placed.
  • the motor 30 is disposed on one side of the base 10 and is connected to the screw 42 through the motor shaft connecting device 70 and the first assembly 50.
  • the screw 42 is pressed against the first assembly 50 and the second assembly 60. Can rotate in the state.
  • the first assembly 50 is disposed on one side of the base 10, and the second assembly 60 is disposed on the other side of the base 10.
  • the first assembly 50 and the second assembly 60 face in parallel with the screws 42 interposed therebetween.
  • FIG. 3 is an exploded perspective view of the first assembly of FIG. 1
  • FIG. 4 is an enlarged view of the first assembly of FIG. 2
  • FIG. 5 is an enlarged view of the bearing shaft of FIG. 4
  • FIG. 6 is taken along line VI-VI of FIG. 4. It is a cut section.
  • the first assembly 50 includes a first housing 51, a first bearing 52, a first bearing shaft 53, and a first pressing member 54.
  • the pressure is fixed while supporting one end of the screw 42 to rotate.
  • the first housing 51 is fixed to the base 10. Inside the first housing 51, a bearing space 513 is formed into a first space and a second space by an arrangement space 512 and a step 511. The arrangement space 512 and the bearing space 513 are connected.
  • the first bearing 52 includes a first thrust ball bearing 521 disposed in a first space of the bearing space 513 and a second thrust ball bearing 522 disposed in a second space of the bearing space 513. do.
  • the first and second thrust ball bearings 521 and 522 include balls, rotary wheels, and fixed wheels, respectively.
  • the rotating wheel is in contact with the outer circumference of the bearing shaft 53 and the fixed wheel is in contact with the inner circumference of the step 511 and the bearing space 513.
  • the first bearing shaft 53 has an insertion hole 53a into which one end of the screw 42 is inserted, and has a shaft flange 531, a shaft housing 533, and a flange fastening member 534. It includes, and is supported on the first bearing 52 in one end of the screw 42 is inserted.
  • the shaft flange 531 and the shaft housing 533 are integrally formed, and the diameter of the shaft housing 533 is smaller than the diameter of the shaft flange 531.
  • the insertion hole 53a passes through the shaft flange 531 and is formed into the shaft housing 533. The insertion hole 53a does not completely penetrate the shaft housing 533.
  • the shaft housing 533 penetrates the first thrust ball bearing 521 and the second thrust ball bearing 522 and is supported by the rotating wheel. At least a portion of one side of the shaft housing 533 is formed with a screw 533a.
  • the shaft flange 531 is connected to the other side of the shaft housing 533.
  • the shaft flange 531 is in contact with the second thrust ball bearing 522.
  • the shaft flange 531 presses the second thrust ball bearing 522 toward the step 511 to prevent play between the rotating wheel, the fixed wheel, and the ball.
  • a cutout 532 is formed in a portion of the shaft flange 531 and the shaft housing 533.
  • the cutout 532 is formed from one edge to the opposite edge past the axial center CL of the screw 42.
  • the cutout 532 separates at least a portion of the shaft flange 531 and the shaft housing 533 into a first member and a second member.
  • the bolt-tightening flange member 534 is formed in a pair and is disposed on the upper and lower sides with respect to the shaft center CL. Ends of the pair of flange fastening members 534 are fastened to the second member through the first member and the cutout 532.
  • the gap G of the cutout 532 may be narrowed.
  • the diameter of the circumference of the insertion hole 53a of the shaft flange 531 becomes small, and the shaft flange 531 is tightened while tightening one end of the screw 42.
  • the inner circumference of the shaft flange 531 is in close contact with the surface of the filling member 43a so that the first bearing shaft 53 is engaged with the screw 42.
  • the filling member 43a is omitted, the inner circumference of the shaft flange 531 is in close contact with the surface of the screw 42.
  • the insertion hole 53a may be reduced to a concentric state when the flange fastening member 534 is fastened to the second member. Accordingly, the diameter of the circumference of the insertion hole 53a is not eccentric but uniformly reduced, thereby preventing a problem caused by the incision being formed only on one side based on the axis center as in the related art.
  • a pair of flange tightening members 534 are described as being fastened to the second member through the first member, respectively, but the flange tightening member 534 located on the upper side of the shaft center CL. May be fastened to the second member by penetrating the first member, and the flange fastening member 534 located below may be fastened to the first member by penetrating the second member.
  • the first pressurizing member 54 which is a tannery bolt, is fastened to the fastening hole 533b of the shaft housing 533 in a state parallel to the shaft center CL, and the screw 42 moves toward the second assembly 60 as it is fastened. Pressurize.
  • FIG. 7 is an exploded perspective view of the second assembly of FIG. 1, and FIG. 8 is an enlarged view of the second assembly of FIG. 2.
  • the second assembly 60 includes a second housing 61, a second bearing 62, a second bearing shaft 63, a second pressing member 64, and a lock nut 65. ) And press-fixes while supporting the other end of the screw 42 to rotate.
  • the components of the second housing 61, the second bearing 62, the second bearing shaft 63, and the second pressing member 64 according to the present embodiment are the first assembly according to the embodiment of FIGS. 3 to 6. Since the first housing, the first bearing, the first bearing shaft, and the first pressing member of 50 are the same as in the embodiment, duplicated descriptions will be omitted.
  • the shaft flange 631 of the second bearing shaft 63 presses the first thrust ball bearing 621 of the second bearing 62 toward the step 611 of the second housing 61 so as to press the first thrust. There is no gap between the rotating wheel, the fixed wheel and the ball of the ball bearing 621.
  • a screw 65a is formed at least at a part of the inner circumference thereof.
  • the screws 65a and 633a are fastened to each other.
  • the lock nut 65 presses the second thrust ball bearing 622 of the second bearing 62 in the direction of the step 611 and the shaft flange 631 receives the first thrust ball bearing of the second bearing 62. 621 is pressed toward the step 611. Pressurization does not cause play between the rotating wheel, the fixed wheel, and the ball of the second bearing 62.
  • the lock nut 65 is fixed to the shaft housing 633 by a tanned bolt 651 so that the lock nut 65 does not move due to vibration and rotational force of the shaft housing 633.
  • the second bearing shaft 63 is the second bearing. It can rotate stably in the state supported by the rotating wheel of (62).
  • the second press member 64 which is a tannery bolt, is fastened to the fastening hole 633b of the shaft housing 633 in a state parallel to the shaft center CL.
  • the second pressing member 64 presses the screw 42 in the direction of the first assembly 50.
  • the screws 42 Since the first pressing member 54 and the second pressing member 64 press the screws 42 in a direction facing each other, even if an impact is applied to the screws 42 in the axial direction during the rotation of the screws 42, the screws 42 Does not cause axial slippage.
  • the insertion hole 63a may be reduced to a concentric state when the flange fastening member 634 is fastened to the second member.
  • the circumference of the insertion hole 63a of the shaft flange 631 can be in contact with the filling member 43b as a whole.
  • the center of the spiral groove of the screw 42 and the rotation center of the first bearing shaft 53 and the second bearing shaft 63 may be coincident with the filling member 43b.
  • FIG. 9 is a perspective view illustrating the motor shaft connecting apparatus of FIG. 2, FIG. 10 is an exploded perspective view of FIG. 9, FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 9, and FIG. 12 is a XII-XII of FIG. 9. 13 is a cross-sectional view taken along the line, and FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG. 9.
  • the motor shaft connecting device 70 includes a first coupler 71, a second coupler 72, a coupler fastening member 74, and a hub 73.
  • the motor 30 and the screw 42 are powered by the first bearing shaft 53.
  • the first coupler 71 protrudes from one surface of the boss 711 having the through hole 71 a and the boss 711 and extends the through hole 71 a. It includes 712 and is coupled to the drive shaft 31 of the motor 30 through the through hole (71a). In order to increase the coupling force between the first coupler 71 and the drive shaft 31, the first coupler 71 is fixed to the drive shaft 31 by a tanned bolt 713 (see FIG. 11).
  • the bite protrusion 712 is formed at intervals along the circumferential direction with respect to the center of the through hole 71a. The end of the drive shaft 31 and the end of the bite protrusion 712 coincide.
  • the diameter of the through hole 71a is smaller than the diameter of the drive shaft 31.
  • the diameter of the through hole 71a and the diameter of the drive shaft 31 are about 0.01 mm.
  • the second coupler 72 includes a boss 721 having a through hole 72a and a stitching protrusion 722 which protrudes from one surface of the boss 721 and is inserted between the stitching protrusions 712 of the first coupler 71. It is coupled to the shaft housing 533.
  • the end of the bite protrusion 722 of the second coupler 72 faces one surface of the boss 711 of the first coupler 71, and the end of the bite protrusion 712 of the first coupler 71 is the second coupler 72.
  • the inside of the stitching protrusion 722 of the second coupler 72 faces the drive shaft 31.
  • the end of the drive shaft 31 is in close proximity to the shaft housing 533.
  • the contact area between the motor shaft coupling device 70 and the drive shaft 31 increases more than the driving shaft 31 is inserted up to the boss 711 position. ) And the driving force of the driving shaft 31 can be improved.
  • a side surface of the bite protrusion 722 of the second coupler 72 and the bite protrusion 711 of the first coupler 71 are separated to form a space B having a predetermined width therebetween.
  • One side of the shaft housing 533 is inserted into the boss 721 through the through hole 72a. At least a portion of the periphery of the through hole 72a is formed with a screw 721b engaged with the screw 533a of the shaft housing 533.
  • the shaft flange 531 presses the second thrust ball bearing 522 toward the step 511, and the boss 721 is the first thrust ball bearing 521. Is pressed toward the step 511. Pressurization does not cause play between the rotating wheel, the fixed wheel, and the ball of the first bearing 52 (see FIG. 4). Thus, the first bearing shaft 53 may rotate stably in a state supported by the rotation wheel of the first bearing 52.
  • the boss 721 of the second coupler 72 has a cutout 721a, and the cutout 721a is the same as the cutout embodiment according to the embodiment of FIGS. 3 to 6 and thus overlaps. The description will be omitted.
  • the cutout portion 721a may be narrowed by the fastening of the pair of coupler fastening members 74, and the boss 721 may tighten the shaft housing 533 as the circumferential diameter of the through hole 72a decreases.
  • the portion around the through hole 72a where the screw 721a is not formed and the portion where the screw 533a of the shaft housing 533 is not formed are in contact with each other. As a result, the center of rotation of the second coupler 72 and the center of rotation of the shaft housing 533 may coincide with each other.
  • Coupler tightening member 74 tightening structure is the same as the embodiment of the flange tightening member according to the embodiment of Figures 3 to 6 duplicated description will be omitted.
  • the hub 73 includes a ring member 731 and a rib 732 and transmits the rotational force of the first coupler 71 to the second coupler 72.
  • the hub 73 is processed by injection and can be made of polyurethane.
  • the ring member 731 surrounds the bite protrusion 712 of the first coupler 71 and the bite protrusion 722 of the second coupler 72.
  • the boss and the bite protrusion are stepped by the thickness of the ring member 731 so that the outer circumference of the ring member 731 coincides with the outer circumference of the boss 711, 721.
  • the rib 732 protrudes toward the center from the inner circumference of the ring member 731 and is arranged along the circumferential direction. One end of the rib 732 is connected to the inner circumference of the ring member 731, and the other end of the rib 732 does not extend freely to the virtual center 731a of the ring member 731. 731a). Connecting the other end of the ribs 731 can be a predetermined diameter. The diameter may be greater than or equal to the diameter of the drive shaft 31.
  • the center portion of the ring member 731 is empty so that the drive shaft 31 can penetrate the other end of the rib 732.
  • the rib 732 is located between the bite 712 and the bite 722 (see FIG. 13).
  • the width W1 of the rib 732 seen from the front of the hub 73 is formed to be wider than the space W2 between the adjacent bites 712 and 722.
  • the rib 732 made of polyurethane or the like has an elastic force while maintaining a predetermined strength.
  • the ribs 732 are compressed between the neighboring bites 712 and 722 when the bites 712 and 722 are inserted between the neighboring ribs 732.
  • the insertion protrusions 712 and 722 can be easily inserted between the adjacent ribs 732.
  • FIGS. 1 to 13 Another embodiment of the present invention has most of the components of the embodiment described with reference to FIGS. 1 to 13.
  • the second coupler 72 may be directly coupled to the screw 42 instead of the first bearing shaft 53 to tighten the screw 42.
  • the configuration of the embodiment of FIGS. 1 to 13 may be applied as it is.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Transmission Devices (AREA)

Abstract

La présente invention concerne un dispositif qui permet de fixer des parties rotatives des deux extrémités d'une vis mère sphérique, qui porte de façon fixe les deux extrémités de la vis sphérique et qui comprend : un premier ensemble pour fixer de manière rotative une extrémité de la vis mère sphérique ; un second ensemble pour fixer de manière rotative l'autre extrémité de la vis mère sphérique, le premier ensemble comprenant un premier élément de pression pressant une extrémité de la vis mère sphérique vers le second ensemble tout en étant progressivement couplé, le second ensemble comprenant un second élément de pression pressant l'autre extrémité de la vis mère sphérique vers le premier ensemble tout en étant progressivement couplé, le premier élément de pression et le second élément de pression pressant la vis mère sphérique rotative dans des directions se faisant face de façon à empêcher le déplacement vers l'arrière axial de la vis mère sphérique, même si un impact est appliqué à la vis mère sphérique rotative dans la direction axiale.
PCT/KR2016/012675 2015-11-23 2016-11-04 Dispositif pour fixer des parties rotatives des deux extrémités d'une vis mère sphérique et appareil de déplacement linéaire le comprenant WO2017090913A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2015-0164307 2015-11-23
KR1020150164307A KR101648808B1 (ko) 2015-11-23 2015-11-23 리드 볼 스크류의 양단 회전부 고정장치, 모터축 연결장치 및 이를 포함하는 직선운동장치

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WO2017090913A1 true WO2017090913A1 (fr) 2017-06-01

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PCT/KR2016/012675 WO2017090913A1 (fr) 2015-11-23 2016-11-04 Dispositif pour fixer des parties rotatives des deux extrémités d'une vis mère sphérique et appareil de déplacement linéaire le comprenant

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Cited By (3)

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CN109194020A (zh) * 2018-11-07 2019-01-11 扬州电力设备修造厂有限公司 一种自锁可靠的高精度电动推杆
CN110480388A (zh) * 2019-07-25 2019-11-22 天津职业技术师范大学(中国职业培训指导教师进修中心) 一种曲柄轴夹具及其使用方法
CN110588955A (zh) * 2019-09-03 2019-12-20 中国空空导弹研究院 一种滚珠丝杠副旋转作动器装置

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CN110588955B (zh) * 2019-09-03 2024-04-09 中国空空导弹研究院 一种滚珠丝杠副旋转作动器装置

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