JP2005042824A - Assembling method and device of damper member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform highly accurate and effective press-fitting work by a simple structure and configuration. <P>SOLUTION: The assembly device 50 is equipped with a press-fitting mechanism 52 for holding both ends in the axial direction of a dynamic damper 22 and moving the dynamic damper 22 in the axial direction of a drive shaft 12, a drive mechanism 54 for rotating the drive shaft 12 in both normal and reverse directions, and a cleaning solution supply mechanism for supplying a cleaning solution to a sliding area between the dynamic damper 22 and the drive shaft 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a damper member assembling method and apparatus for assembling a damper member on the outer periphery of a shaft member.

  For example, in a power transmission device for an automobile, a constant velocity joint is employed in order to obtain a smooth rotational force without being affected by the angle of a drive shaft (shaft member) (see Patent Document 1). The constant velocity joint includes a bar field type constituted by a plurality of ball grooves provided in an outer member (outer ring member) and an inner member (inner ring member) with ball bearings, and an axial direction in the outer member. There is known a tripod type in which at least three roller grooves are provided, and a roller disposed on an inner member is fitted into the roller grooves.

Japanese Patent Laid-Open No. 9-317783 (FIG. 1)

  In this type of constant velocity joint, a dynamic damper (damper member) is mounted at a predetermined position of the drive shaft in order to suppress vibration. This dynamic damper is configured, for example, by fixing a metal vibrating body with a rubber material, and has a mechanism for canceling and suppressing the vibration of the drive shaft by the vibration of the vibrating body.

  By the way, when the dynamic damper is attached to the drive shaft, an operation of moving the dynamic damper in the axial direction of the drive shaft is performed with the dynamic damper clamped.

  However, since the rubber portion constituting the dynamic damper slides along the outer periphery of the shaft member, the rubber portion is likely to be bent. As a result, the variation in the mounting position of the dynamic damper with respect to the drive shaft becomes large, and it is pointed out that the band cannot be wound around the dynamic damper in a later process or interferes with a jig in another process. .

  The present invention solves this type of problem, and provides a damper member assembling method and apparatus capable of smoothly and accurately assembling a damper member on the outer periphery of a shaft member with a simple process and configuration. With the goal.

  In the damper member assembling method and apparatus according to the present invention, the damper member is relatively moved in the axial direction of the shaft member in a state where both ends of the damper member in the axial direction are gripped. At that time, the shaft member is rotated in both forward and reverse directions relative to the damper member, and the cleaning liquid is supplied to the sliding portion between the damper member and the shaft member.

  According to the present invention, when the damper member relatively moves in the axial direction of the shaft member, the shaft member rotates in both forward and reverse directions relative to the damper member. For this reason, compared with the case where the damper member is moved linearly along the axial direction of the shaft member, the rubber part constituting the damper member is not slid due to sliding, and the assembly operation of the damper member is performed. Smooth and reliable execution is possible.

  In addition, a cleaning liquid such as soapy water is supplied to the sliding portion between the damper member and the shaft member. Therefore, the damper member and the shaft member slide smoothly, and the rubber portion of the damper member is not caught on the outer periphery of the shaft member. Furthermore, when the soapy water is dried, it functions as a fixing material for holding the damper member on the shaft member, and can prevent displacement of the damper member.

  FIG. 1 is a partial cross-sectional explanatory view of a constant velocity joint 10 in which a method for assembling a damper member according to an embodiment of the present invention is implemented.

  The constant velocity joint 10 includes a drive shaft (shaft member) 12, an outboard component 14 attached to one end of the drive shaft 12, and an inboard component attached to the other end of the drive shaft 12. 16.

  Serration shaft portions 18a and 18b are provided at both ends of the drive shaft 12, and a circumferential groove 20 is formed at the tip edge portion of one serration shaft portion 18b. A dynamic damper (damper member) 22 is externally mounted on the drive shaft 12 so that the position can be adjusted.

  The dynamic damper 22 is configured, for example, by fixing a metal vibrating body with a rubber material, and is provided with a rubber tongue portion (rubber portion) 22 a that is in sliding contact with the outer periphery of the drive shaft 12. The dynamic damper 22 is fixed to a predetermined position of the drive shaft 12 by a band 23.

  The outboard component 14 includes an outer ring member 24 and an inner ring member 28 accommodated in the outer ring member 24 with a plurality of steel balls 26 interposed therebetween, and a drive shaft is disposed at the center of the inner ring member 28. Serration holes 30 for press-fitting the twelve serration shaft portions 18a are formed. Both ends of a boot 32 are attached to the outer ring member 24 and the drive shaft 12.

  The inboard component 16 includes an outer ring member 34 and a spider 38 that is accommodated in the outer ring member 34 with a plurality of rollers 36 interposed therebetween. A serration of the drive shaft 12 is provided at the center of the spider 38. A serration hole 40 for engaging the shaft portion 18b is formed. A snap ring 42 for retaining the spider 38 is attached to the circumferential groove 20 provided in the serration shaft portion 18b. Both ends of a boot 44 are attached to the outer ring member 34 and the drive shaft 12.

  FIG. 2 is a schematic plan view of an assembling apparatus 50 for assembling the dynamic damper 22 to the outer periphery of the drive shaft 12, and FIG. 3 is a schematic perspective explanatory view of the assembling apparatus 50.

  The assembly device 50 grips both ends of the dynamic damper 22 in the axial direction (arrow A direction), and moves the dynamic damper 22 in the axial direction of the drive shaft 12 (arrow A direction), and the drive shaft 12. And a cleaning liquid supply mechanism 56 for supplying a cleaning liquid to a sliding portion between the dynamic damper 22 and the drive shaft 12.

  As shown in FIGS. 2 to 4, the press-fitting mechanism 52 includes a movable base 60 that can move forward and backward along a pair of guide rails 58 a and 58 b extending in the direction of arrow A. A ball screw 62 is screwed onto the movable base 60, and the ball screw 62 extends in the direction of arrow A, and a motor (actuator) 64 is axially attached to the end. A support wall 66 is erected on the movable base 60. The support wall 66 is provided with a holding member 68 disposed at one end of the dynamic damper 22 and the other end of the dynamic damper 22. And a clamp member 70 to be provided.

  As shown in FIGS. 4 and 5, a pair of rails 72 a and 72 b are fixed to the support wall portion 66 so as to extend in the horizontal direction. A slide base 74 is mounted on the rails 72a and 72b so as to be able to advance and retreat, and a connecting plate 76 is fixed to the slide base 74. The connecting plate 76 is engaged with a rod 78 a that protrudes in the direction of arrow A from a first cylinder (pressing portion) 78 fixed to the support wall portion 66.

  The slide base 74 is provided with a fixed plate 80, and a swing plate 84 is swingably engaged with the fixed plate 80 with a shaft 82 as a fulcrum. A second cylinder 88 is swingably mounted on the slide base 74 via an attachment member 86, and a swing plate 84 is connected to a rod 88 a extending upward from the second cylinder 88 via a link 90. Connected.

  The holding member 68 includes a lower claw 92a and an upper claw 92b. The lower claw 92 a and the upper claw 92 b are made of a resin material, and the lower claw 92 a is fixed to the fixed plate 80, while the upper claw 92 b is fixed to the swing plate 84. The lower claw 92a and the upper claw 92b have a protruding portion shape that is inserted between the rubber tongue portion 22a of the dynamic damper 22 and the drive shaft 12 in a state of being joined to each other.

  The cleaning liquid supply mechanism 56 includes a conduit 94 having one end fixed to the swing plate 84. The other end of the conduit 94 communicates with a cleaning liquid reservoir (not shown). The swing plate 84 is formed with a passage (not shown) for supplying the cleaning liquid sent from the pipe 94 to the holding member 68.

  The clamp member 70 includes a fixed clamp 96a that is fixed to the support wall 66, and first and second swing clamps 96b and 96c that are swingably supported by the fixed clamp 96a with shafts 98a and 98b as fulcrums. With. The third and fourth cylinders 100 and 102 are swingably mounted on the support wall portion 66. A first swing clamp 96b is connected to the rod 100a extending upward from the third cylinder 100 via a link 104a, and a link 104b is connected to the rod 102a extending obliquely upward from the fourth cylinder 102. The second swing clamp 96c is connected via

  The fixed clamp 96a and the first and second swinging clamps 96b and 96c are close to each other (closed state), and an inner peripheral surface 106 for gripping the dynamic damper 22 is integrally formed therebetween. (See FIG. 4).

  As shown in FIGS. 2 and 3, the drive mechanism 54 includes a fifth cylinder 110, and one end of the swing lever 112 is connected to a rod 110 a extending upward from the fifth cylinder 110. A rotating shaft 114 is connected to the other end of the swing lever 112, and a grip 116 is provided at the end of the rotating shaft 114. The gripping part 116 includes a receiving part 118 fixed to the rotating shaft 114 and a movable part 122 that can swing via a sixth cylinder 120 attached to the receiving part 118. One end of the drive shaft 12 is gripped by the receiving portion 118 and the movable portion 122.

  The other end of the drive shaft 12 is centered and supported by a centering portion 124. The centering portion 124 includes a seventh cylinder 126 oriented in the horizontal direction, and a centering shaft portion 128 is provided at the tip of the rod 126 a of the seventh cylinder 126.

  The operation of the assembling apparatus 50 configured as described above will be described below.

  As shown in FIG. 5, the holding member 68 and the clamp member 70 that constitute the press-fitting mechanism 52 are respectively disposed in the open position. Specifically, when the rod 88 a moves downward under the action of the second cylinder 88, the swing plate 84 constituting the holding member 68 swings upward about the shaft 82 as a fulcrum. To do. On the other hand, the third and fourth cylinders 100 and 102 are driven to move the rods 100a and 102a inward. Accordingly, the first and second swing clamps 96b and 96c swing upward with the shafts 98a and 98b as fulcrums.

  In this state, the dynamic damper 22 is put on the fixed clamp 96a of the clamp member 70, and the third and fourth cylinders 100 and 102 are driven to project the rods 100a and 102a forward. Therefore, the first and second swing clamps 96b and 96c swing toward the fixed clamp 96a, and the dynamic damper 22 is integrated between the fixed clamp 96a and the first and second swing clamps 96b and 96c. The outer periphery is gripped by the inner peripheral surface 106 that is formed.

  Next, the swing plate 84 constituting the holding member 68 swings toward the fixed plate 80 under the action of the second cylinder 88. For this reason, a conical shape as a whole is obtained via the lower claw 92a and the upper claw 92b (see FIG. 6).

  Therefore, when the first cylinder 78 is driven and the rod 78a moves in the direction of the arrow A1, the connecting plate 76 and the slide base 74 engaged with the rod 78a integrally move in the direction of the arrow A1 (see FIG. 7). ). Accordingly, the lower claw 92a and the upper claw 92b move in the direction of the arrow A1 and are inserted into the rubber tongue portion 22a of the dynamic damper 22.

  As described above, the drive shaft 12 is inserted substantially simultaneously with the operation in which the dynamic damper 22 is fixed by the clamp member 70 and the holding member 68. As shown in FIG. 7, the drive shaft 12 is held by a movable V-shaped receiver 130 provided in the vicinity of the holding member 68 and in the vicinity (not shown) of the grip portion 116, and the centering portion 124. 7 is driven. Accordingly, the shaft portion 128 moves forward, and the other end of the drive shaft 12 is centered and supported by the shaft portion 128 (see FIG. 8). In the grip 116, the movable portion 122 swings toward the receiving portion 118 via the sixth cylinder 120, and the other end of the drive shaft 12 is gripped by the receiving portion 118 and the movable portion 122. On the other hand, the V-shaped receiver 130 is retracted to a position that does not interfere with the press-fitting operation of the dynamic damper 22.

  In this state, the drive mechanism 54 is driven. In the drive mechanism 54, as shown in FIGS. 2 and 3, the fifth cylinder 110 is driven and the rod 110a moves back and forth in the vertical direction, so that the swing lever 112 swings in the vertical direction. A rotating shaft 114 is connected to the swing lever 112, and the swing shaft 112 rotates in both forward and reverse directions when the swing lever 112 swings. The rotation of the rotating shaft 114 is transmitted to the drive shaft 12 through the grip portion 116, and the drive shaft 12 is rotated within a predetermined angle range in both the forward and reverse directions while being centered and supported by the centering portion 124. Do.

  In synchronization with the rotational operation of the drive shaft 12 described above, the motor 64 constituting the press-fitting mechanism 52 is driven and controlled. A ball screw 62 is pivotally attached to the motor 64, and when the ball screw 62 rotates in a predetermined direction, the movable base 60 moves in the arrow A2 direction (see FIG. 9). For this reason, the holding member 68 and the clamp member 70 move integrally with the dynamic damper 22 in the direction of the arrow A <b> 2 while gripping both axial ends of the dynamic damper 22. At that time, the cleaning liquid is supplied to the holding member 68 from the conduit 94 constituting the cleaning liquid supply mechanism 56. For example, soapy water is used as the cleaning liquid.

  Thus, in this embodiment, when the dynamic damper 22 moves in the direction of the arrow A2 along the axial direction of the drive shaft 12, the drive shaft 12 rotates in both the forward and reverse directions via the drive mechanism 54. .

  Therefore, compared with the case where the dynamic damper 22 is linearly moved along the axial direction of the drive shaft 12, the rubber tongue piece portion 22a constituting the dynamic damper 22 is not bent due to sliding. Thereby, the effect that the assembly | attachment operation | work of the dynamic damper 22 can be performed smoothly and reliably is acquired.

  Moreover, for example, soapy water is supplied to the sliding portion between the dynamic damper 22 and the drive shaft 12 as the cleaning liquid from the cleaning liquid supply mechanism 56. Therefore, the dynamic damper 22 can smoothly slide on the outer peripheral surface of the drive shaft 12, and the rubber tongue piece portion 22 a of the dynamic damper 22 is not caught on the outer periphery of the drive shaft 12.

  Further, when the soapy water is dried, the dried product functions as a fixing material for holding the dynamic damper 22 on the drive shaft 12. Therefore, there is an advantage that the displacement of the dynamic damper 22 can be reliably prevented.

  By the way, after the dynamic damper 22 is assembled to the drive shaft 12, the motor 64 is stopped and the press-fitting mechanism 52 is stopped at a predetermined position. In the holding member 68, the connecting plate 76 moves in the direction of the arrow A <b> 2 under the action of the first cylinder 78, and the lower claw 92 a and the upper claw 92 b are dynamically moved via the slide base 74 fixed to the connecting plate 76. Separated from the damper 22. Further, the second cylinder 88 is driven and the swing plate 84 swings upward, so that the upper claw 92 b is separated from the drive shaft 12.

  Next, in the clamp member 70, the third and fourth cylinders 100 and 102 are driven, and the first and second swing clamps 96 b and 96 c swing upward and are separated from the drive shaft 12.

  On the other hand, in the grip portion 116, the movable portion 122 swings upward under the action of the sixth cylinder 120, and the movable portion 122 is detached from the drive shaft 12. Further, in the centering portion 124, the shaft portion 128 is detached from the end portion of the drive shaft 12 through the seventh cylinder 126.

  As a result, the drive shaft 12 is merely placed on the receiving portion 118 and the fixed clamp 96a, and the drive shaft 12 is taken out from the assembling apparatus 50 and transferred to the next work station.

It is a partial cross section explanatory drawing of the constant velocity joint by which the assembly method of the damper member concerning the embodiment of the present invention is carried out. It is a schematic plan view of the assembly apparatus. It is a schematic perspective view of the assembly apparatus. It is a perspective explanatory view of a press fit mechanism constituting the assembling apparatus. It is front explanatory drawing of the said press injection mechanism. It is side surface explanatory drawing of the said press injection mechanism. It is a side view at the time of hold | maintaining a dynamic damper with the said press injection mechanism. It is a side view at the time of centering support of a drive shaft by the press fit mechanism. FIG. 3 is a side view when the dynamic damper is press-fitted into the drive shaft by the press-fitting mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Constant velocity joint 12 ... Drive shaft 14 ... Outboard component 16 ... Inboard component 18a, 18b ... Serration shaft part 24, 34 ... Outer ring member 28 ... Inner ring member 30, 40 ... Serration hole 50 ... Assembly apparatus 52 ... Press-fit mechanism 54 ... Drive mechanism 56 ... Cleaning liquid supply mechanism 60 ... Movable base 62 ... Ball screw 64 ... Motor 68 ... Holding member 70 ... Clamp member 74 ... Slide base 78, 88, 100, 102, 110, 120, 126 ... Cylinder 80 ... Fixed Plate 84 ... Oscillating plate 92a ... Lower claw 92b ... Upper claw 94 ... Pipe 96a ... Fixed clamp 96b, 96c ... Oscillating clamp 114 ... Rotating shaft 116 ... Gripping part 118 ... Receiving part 122 ... Moving part 124 ... Centering part 128 ... shaft body

Claims (3)

A damper member assembly method for assembling a damper member on the outer periphery of a shaft member,
Gripping both axial ends of the damper member;
While the damper member is moved relatively in the axial direction of the shaft member, the shaft member is rotated in both forward and reverse directions relative to the damper member, and sliding between the damper member and the shaft member is performed. Supplying a cleaning solution to the site;
A method of assembling the damper member, comprising: A damper member assembling device for assembling the damper member on the outer periphery of the shaft member,
A press-fit mechanism that grips both axial ends of the damper member and moves the damper member in the axial direction of the shaft member;
A drive mechanism for rotating the shaft member in both forward and reverse directions;
A cleaning liquid supply mechanism for supplying a cleaning liquid to a sliding portion between the damper member and the shaft member;
A damper member assembling apparatus comprising: 3. The assembly apparatus according to claim 2, wherein the press-fitting mechanism is disposed at one end of the damper member, and is provided with a protrusion that is inserted between a rubber portion of the damper member and the shaft member. A holding member;
A clamp member disposed at the other end of the damper member and capable of opening and closing;
In order to grip the damper member with the holding member and the clamp member, a pressing portion that presses the holding member toward the clamp member,
An actuator capable of integrally moving the holding member and the clamp member in the axial direction of the shaft member;
A damper member assembling apparatus comprising:

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