JP2917800B2 - Drive shaft assembly equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive shaft assembling apparatus for a vehicle such as an automobile.

[0002]

2. Description of the Related Art FIG. 24 is a partially cutaway perspective view showing a front axle of a vehicle, FIG. 25 is a cross section of a drive shaft to which a constant velocity joint, a dustproof boot and the like are fixed, and FIG. 26 is a resin product mounted on the drive shaft. 27 schematically shows a method of tightening the dustproof boots of FIG. 27, and FIG. 27 schematically shows a method of tightening the rubber dustproof boots mounted on the drive shaft.

As shown in FIGS. 24 and 25, a drive shaft 11 has a constant velocity joint (Birfield Joint) 12 attached to an end on the wheel side, while a constant velocity joint is attached to an end on the differential side. A joint (Tripod Joint) 13 is attached, and dustproof boots 14 and 15 are attached to the constant velocity joints 12 and 13 respectively. Also,
A dynamic damper 16 is attached to an intermediate portion of the drive shaft 11. And drive shaft 1
One of the constant velocity joins 13 is connected to a transmission via a differential (not shown).
The other constant velocity join 1 of the drive shaft 11
Numeral 2 is connected to a hub 18 rotatably supported by a knuckle 17, and a wheel (not shown) is attached to the hub 18.

[0004] Generally, one of the illustrated dustproof boots 14 is shown.
Is made of resin and is formed in a hollow bellows shape.
a is fitted to the drive shaft 11 and fastened and fixed by the small-diameter boot band 21, and the large-diameter portion 14 b is fitted to the outer diameter of the constant-velocity join 12 to form the large-diameter boot band 2.
3 and fixed. On the other hand, the other dustproof boot 15 shown is made of rubber and formed in a hollow bellows shape, and the small-diameter portion 15a is fitted to the drive shaft 11 and fastened and fixed by the small-diameter boot band 22, and the large-diameter portion is formed. 15b is fitted to the outer diameter of the constant velocity join 13 and fastened and fixed by the large diameter boot band 24. Further, the dynamic damper 16 is fitted to the drive shaft 11 and fastened and fixed by the clamp band 25.

As shown in FIG. 26, small or large diameter boot bands 21 and 23 for tightening resin dustproof boots 14 have a plurality of locking claws 21a formed on one end and a plurality of locking claws 21a on the other end. The belt-shaped member 21c in which the locking hole 21b is formed is curved, and the locking claw 21a is locked in the locking hole 21b to form an annular shape. 21d is formed. On the other hand, as shown in FIG. 27, the small or large diameter boot bands 22 and 24 for tightening the rubber dustproof boots 15
The lever portion 22b is fixedly bent to a, and a pair of tongue pieces 22c for fixing the tip of the bent lever portion 22b are formed.

[0006]

The above-mentioned small or large diameter boot bands 21 and 23 are temporarily fastened to the outer peripheral surface of a resin-made dustproof boot 14 in advance, and the boot is assembled to the drive shaft 11 or the like. Later, pliers (hydraulic pliers)
By pressing and crimping the protruding portion 21d from the circumferential direction using P, the inner diameter of the small or large diameter boot bands 21 and 23 is reduced and fully tightened, and the dustproof boot 14 is fixed to the drive shaft 11 or the like. (See FIG. 26). On the other hand, the small-diameter or large-diameter boot bands 22 and 24 are temporarily fastened to the outer peripheral surface of the rubber dust-proof boot 15 in advance, similarly to the above-mentioned bands, and the drive shaft 11
After assembling, the lever portion 22b is manually operated by an operator.
Is bent in the circumferential direction, the inner diameter of the small-diameter or large-diameter boot bands 22, 24 is reduced and tightened, and the dustproof boot 15 can be fixed to the drive shaft 11 or the like. The tip of the lever portion 22b is a pair of tongue pieces 22c.
Is fixed by caulking in the axial direction with a hammer or the like (see FIG. 27).

However, in the conventional boot band tightening method described above, the work is performed manually by an operator, including a joint pull-out inspection before tightening and a work of confirming a boot assembling position. There is a problem that the burden on the worker is large and the work time is long.

In order to solve such a problem, Japanese Patent Application Laid-Open No. 2-104929 discloses an automatic caulking process.
Is disclosed in Japanese Patent Application Laid-Open Publication No. HEI 9-203 (1995). This is related to a boot band caulking device for caulking a boot band used for a universal joint assembly such as a constant velocity joint, and the swivel assembly supported by the support means is rotated to position the caulking portion of the boot band and press. The caulking portion pressed by the means to the boot band side is used to caulk the caulked portion.

However, in the above-described apparatus, since the swaging is performed in a state where the universal joint assembly such as a constant velocity joint is laid down, there is a disadvantage that the apparatus becomes large, and only the swaging is automated. However, the workability was still poor because the operator still performed the joint pull-out inspection and the boot assembly position check before tightening.

The present invention has been made to solve such a problem, and has as its object to provide a compact drive shaft assembling apparatus capable of greatly improving workability.

[0011]

A drive shaft assembling apparatus according to the present invention for achieving the above object is configured as follows. A mounting jig capable of holding the drive shaft upright is provided on the front surface of a column erected on the bed, and the front surface of the column above the mounting jig can be moved vertically by an actuator. A joint pull-out inspection device that performs a pull-out inspection of the joint connected to the shaft end of the drive shaft on the head, a boot assembly position detection device that checks the assembly height of the boot with respect to the joint,
A boot band tightening device for permanently tightening a boot band temporarily tightened in advance is provided on the outer periphery of the boot.

[0012]

The joint pull-out inspection device includes a hollow shaft movable vertically in the head and supported in an upwardly biased state, and a lifting shaft movable vertically in the hollow shaft and inserted in the upwardly biased state. A bar, an actuator capable of lowering the lifting bar against an urging force, and a lower end of the lifting bar connected to a lower end of the lifting bar to reduce a diameter of the lifting bar in a state of being biased upward to clamp a joint and to perform a lowering operation by the actuator And a collet chuck for unclamping the joint by expanding the diameter.

[0014]

[0015] With the boot band clamping device includes a clamping device and with a resin boot for clamping apparatus for a rubber boot is Ri Na is arranged in a slide table slidably mounted horizontally in a head lower surface portion, the The tightening device for rubber boots
Rotate the shaft to position the boot band in the circumferential direction.
The circumferential positioning means to be performed and the boot band
A rubber boot that temporarily holds the rubber boot in the positioned state
And a boot band positioned as described above.
Of the boot band by bending the lever part of the
Bending tightening means for tightening by reducing the inner diameter, and said means
The tip of the lever bent with the tongue of the boot band
Lever fixing means for fixing by caulking the part in the axial direction
And the resin boot tightening device is provided with a driveshaft.
Rotate the shaft to position the boot band in the circumferential direction.
Peripheral positioning means, and a block positioned by the means.
Boot band temporary holding means to temporarily hold the art band
And the outwardly protruding boot band temporarily held by the means.
The inside diameter of the boot band is reduced by crimping the part from the circumferential direction.
It is characterized in that it is provided with
Sign.

[0016]

[0017]

[0018]

According to the structure of [Action], with the drive shaft upright,
The pull-out inspection of the joint and the confirmation of the mounting height of the boot are automatically performed, and then, in the same state, the boot band is automatically tightened automatically.

[0019]

According to the configuration of (1), the joint is clamped and unclamped with one touch by the raising and lowering operation of the lifting bar by the actuator, and after the joint is clamped by the collet chuck, the entire head is raised.
Pull-out inspection of the joint is performed automatically.

[0021]

According to the structure, the tightening device for the rubber boot and the tightening device for the resin boot are automatically selected according to the type of the vehicle by moving the slide table. Also boots
The band is positioned in the circumferential direction and the rubber boot is temporarily held down
After that, bend the lever part of the boot band
Then the rubber boots are tightened and fixed.
The end is swaged with a tongue piece and fixed. Also, boots
After the command is positioned in the circumferential direction and temporarily held down,
By caulking the protrusion, the resin boot is tightened and fixed
You.

[0023]

[0024]

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view of a drive shaft assembling apparatus according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. 5 is a side view, FIG. 6 is a plan view, FIG.
FIG. 8 is a side view of a rubber boot temporary holding means, FIG. 9 is a plan view of the same, FIG. 10 is a front view of a boot assembling position detecting device, FIG. 11 is a side view of FIG. 13 is a plan view, FIG. 13 is a right side view of a tightening device for a rubber boot, FIG. 14 is a plan view thereof, FIG. 15 is a front view thereof, FIG. 16 is a left side view thereof, and FIG. FIG. 18 is a plan view, FIG. 19 is a front view, FIG.
Is a plan view of the caulking portion, FIG. 22 is an operation state diagram of the caulking portion, and FIG. 23 is a plan view showing an assembly line of the drive shaft including the drive shaft assembling apparatus of the present embodiment.

First, the assembly line of the drive shaft of this embodiment will be described. As shown in FIG. 23, supply tables 31 and 32 for supplying two types of drive shafts 11 having different lengths are provided side by side at one end of the floor. Is transported in a horizontal state. A supply table 34 for supplying the dynamic damper 16 and supply tables 35 and 36 for supplying two types of boots 14 and 15 are connected to one side of the first transfer device 33. Boots 1 of each supply stand 35, 36
Drive shafts 11 on the first transfer device 33
Is provided with a multi-joint mounting robot 37 to be mounted on the vehicle.

The dynamic damper 1 is located on the first transfer device 33 before and after the articulated robot 37.
There are provided a clamp band tightening device 38 for tightening the 6 by the clamp band 23 and fixing, and a boot band tightening device 39 for tightening and fixing the small diameter portions of the boots 14 and 15 by the boot bands 21 and 22.

A shuttle-type second transfer device 40A for transferring the drive shaft 11 in a vertical state is provided on the floor, and is provided between the downstream side of the first transfer device 33 and the upstream side of the second transfer device 40A. An articulated transfer robot 41 that transfers the drive shaft 11 in the horizontal state on the first transfer device 33 to the second transfer device 40A in a vertical state is provided therebetween. A vertically supported drive shaft 11 is vertically moved 180 ° between the second transfer device 40A and the shuttle-type third transfer device 40B in the next step.
A reversing device 42 for reversing is provided. A supply table 43 for supplying the constant velocity joint 12 is connected to the second transfer device 40A, and the constant velocity joint 12 of the supply table 43 is mounted on the drive shaft 11 on the second transfer device 40A. A joint mounting robot 45 is provided,
Further, a pull-out inspection of the constant velocity joint 12 is performed adjacent to the articulated robot 45, or the boot 14 or 15 is checked.
The large diameter portion 14b or 15b of the boot band 23 or 24
Drive shaft assembly device 4 for tightening and fixing
6 are provided.

A supply table 47 for supplying a spider (not shown) and a supply table 48 for supplying the constant velocity joint 13 are connected to the third transfer device 40B. An articulated mounting robot 49 and a spider pull-out inspection device 50 for mounting the spider on the drive shaft 11 on the third transfer device 40B are provided near the supply table 47, and the constant velocity joint 13 is provided near the supply table 48. Articulated mounting robot 5 that mounts on the drive shaft 11 on the third transfer device 40B
1 is provided. Furthermore, this articulated robot 5
And a boot band tightening device 5 for tightening and fixing the large diameter portion 15b of the boot 15 by a boot band 24 adjacent to the boot band 1
2 are provided. An articulated unloading robot 53 that unloads the drive shaft 11 on the assembled third transfer device 40B is provided at the downstream end of the third transfer device 40B.

Accordingly, the drive shaft 11 is
After being carried into the first transfer device 33 from the first and second transfer devices 32 and transferred by the first transfer device 33 in a horizontal state, the multi-joint mounting robot 37 first mounts the dynamic damper 16 on the supply table 34 to the drive shaft 11. Then, the clamp band tightening device 38 tightens the clamp band 25 to fix the dynamic damper 16. Next, the articulated mounting robot 37 mounts the boot 14 or 15 on the supply table 35 or 36 on the drive shaft 11 and the boot band tightening device 39 tightens the boot bands 21 and 22 to reduce the diameter of each of the boots 14 or 15. Fix the part. The drive shaft 11 to which the dynamic damper 16 and the boot 14 or 15 are fixed is transferred from the horizontal state to the vertical state by the articulated transfer robot 41 to the second transfer device 40.
On the upstream side of the second transfer device 40, the articulated robot 45 mounted the constant velocity joint 12 on the supply table 43 to the drive shaft 11, and then performed a joint pull-out inspection by the drive shaft assembly device 46. The rear boot band 23 is tightened to fix the large diameter portion of the boot 14.

When the assembling operation of one end of the drive shaft 11 is completed, the reversing device 42 reverses the drive shaft 11 up and down by 180 °. Then, the third transport device 40
In B, the articulated mounting robot 49 mounts the spider on the supply table 47 on the drive shaft 11 and the pull-out inspection device 50 performs the pull-out inspection work. Further, the articulated mounting robot 51 mounts the constant velocity joint 13 on the supply table 48 to the drive shaft 11 and the boot band tightening device 5.
2 fastens the boot band 24 to fix the large diameter portion of the boot 15. Finally, the multi-joint carrying-out robot 53 carries out the drive shaft 11 on the third carrying device 40B in which all the assembly is completed, from the third carrying device 40B to a predetermined position.

Here, the drive shaft assembling apparatus 46 according to the present invention, which is incorporated in the above-described drive shaft assembling line, will be described. As shown in FIGS. 1 to 3, a column 61 is erected on a bed 60, and two long and short drive shaft feet 1 are provided on a front surface of the column 61.
A mounting jig 62 is provided which can hold the head 1 vertically (vertically), and a head 63 is provided above the mounting jig 62 so as to be able to move up and down.

In the illustrated example, the mounting jig 62 is provided for two types of vehicles, that is, a pair of upper and lower clamp portions 64 are provided adjacent to two long and short sets of the drive shaft 11, respectively. The mounting jig 62 includes the linear guide 65 and the cylinder 6.
6 is provided so as to be movable in the left-right direction (horizontal direction), and is regulated by a predetermined stopper 67 to position a predetermined drive shaft 11 at a working position.

As described above, predetermined boots 14 and 15, a constant velocity joint 12, and a dynamic damper 16 are assembled to the drive shaft 11 in the previous step, as described above. Then, as described above, the two long and short drive shafts 11 are transported as a set to the drive shaft assembling device 46 by the shuttle type second transport device 40A which can move back and forth and left and right, and the mounting jig is fixed. It is attached to the clamp part 64 of the tool 62.

The head 63 is connected to a column 61 via a linear guide 68 and a ball screw 69 by an AC servomotor 70 to be driven up and down by a main body 63a. Is mounted on the slide table 74, which can move the lower surface of the main body 63a in the left-right direction by the linear guide 72 and the cylinder 73, to check the mounting height of the boot 14 or 15 with respect to the constant velocity joint 12. A position detecting device 75 and a rubber boot tightening device 76 for fully tightening the boot band 23 or 24 temporarily tightened on the outer periphery of these boots in advance, as well as a resin boot tightening device 77 are arranged in parallel.

The column 61 positioned between the mounting jig 62 and the head 63 has a joint positioning device 78 for positioning the constant velocity joint 12 and a rubber boot for temporarily pressing the rubber boot 15. Temporary holding device 79
Are provided.

The joint positioning device 78 is shown in FIG.
As shown in FIG.
And a pair of right and left claws 82 through a link mechanism (not shown) due to the expansion and contraction of a cylinder 81 attached forward through
Is a so-called wide-angle hand that opens and closes.
2a is fixed to the working position, and is a component of the joint pull-out inspection device 71.

The rubber boot temporary holding device 79 is shown in FIG.
As shown in FIG. 9, a cylinder 84 which is attached to the front surface of the column 61 through the same spacer 83.
A so-called wide-angle hand that opens and closes a pair of left and right asymmetrical claws 85 via a link mechanism (not shown) due to expansion and contraction of
When the claw 85 is closed, the boot 15 is pressed to prevent twisting and the like when the boot band 24 is fully tightened, and is a component of the rubber boot tightening device 76.

The joint pull-out inspection device 71 shown in FIG.
As shown in FIG. 6, in addition to the joint positioning device 78, the head 63 is supported by the main body 63a of the head 63 via both upper and lower brackets 90 so as to be rotatable and movable in the vertical direction. A hollow shaft 92 which is urged upward by an upward movement, and an elevating bar 94 which is vertically movably inserted into the hollow shaft 92 and is urged upward by a compression spring 93 having a smaller spring load than the compression spring 91. A cylinder 96 attached downward to the main body portion 63a via an L-shaped bracket 95 and capable of descending the elevating bar 94 against an urging force by extension thereof;
The diameter of the elevating bar 94 is reduced by the upward movement of the elevating bar 94 by being connected to the lower end of the elevating bar 94 to clamp the shaft portion 12 a of the constant velocity joint 12, and the diameter is expanded by the descending operation of the cylinder 96 to increase the constant velocity A collet chuck 97 for unclamping the shaft portion 12a of the joint 12

Accordingly, with the collet chuck 97 clamping the shaft portion 12a of the constant velocity joint 12, the entire main body 63a is moved to the linear guide 68 and the ball screw 6
By pulling up the column 61 by the AC servomotor 70 via the line 9, the pull-out inspection of the joint portion 12 b of the constant velocity joint 12 with respect to the shaft end of the drive shaft 11 can be performed.

In the illustrated example, as shown in FIG. 7, the metal fitting 98 attached to the lower end of the elevating bar 94 moves up and down in the block 99, thereby causing the elastic claws 9 of the collet chuck 97 to move.
7a moves up and down in the outer cylinder 97b to expand and contract, and when the tip metal fitting 98 moves upward, the tip metal fitting 98 pushes the frame 100 from the outer periphery of the block 99 to the upper end of the outer cylinder 97b. The block 99 is mechanically prevented from moving downward with respect to the outer cylinder 97b of the block 99, that is, the elastic claw 97a (see the state of FIG. 4).

The upper surface of the lower bracket 90 surrounds the hollow shaft 92 so as to surround the load cell 101.
Is provided to measure the pull-out force during the pull-out inspection.

A gear 102 is fixed to the outer periphery of the upper portion of the hollow shaft 92 with a nut 103.
The gear 104 that meshes with the bracket 2
05 is fixed to the output shaft of the motor 106 attached downward. This motor 106 and both gears 1
02 and 104 constitute a part of the circumferential positioning means in the rubber boot tightening device 76 and the resin boot tightening device 77. That is, when the motor 106 rotates while the shaft portion 12a of the constant velocity joint 12 is clamped by the collet chuck 97, the hollow shaft 92 is rotated via the two gears 102 and 104, and the constant velocity joint 12 integrated therewith is rotated. Also rotates with the boot band 23 or 24.

The boot assembly position detecting device 75 is shown in FIG.
As shown in FIGS. 0 to 12, a C-shaped mounting bracket 113 which can be moved vertically by a linear guide 111 and a cylinder 112 on a support bracket 110 vertically provided on the lower surface of the slide table 74, The mounting bracket 113 is vertically movable via a boss 114 and supported in a downwardly urged state by a compression spring 115, and abuts against the end surface of a boot 14 or 15 assembled to the constant velocity joint 12. A pin 116 (axial positioning member) that can rise against the force;
A photoelectric switch 117 for detecting the vertical position of 16;
Stop control means (not shown) for stopping the lowering of the mounting bracket 113 based on the output of the photoelectric switch 117 is provided.

In the illustrated example, the pins 116 are provided at three places at equal intervals around the axis of the constant velocity joint 12 together with the photoelectric switch 117 so that the assembling position can be detected over substantially the entire circumference of the boot 14 or 15. It has become. The photoelectric switch 117 has two types of boots 14.
And 15, two upper and lower detectors 118a, 118 corresponding to
b is provided.

The rubber boot tightening device 76 is shown in FIG.
As shown in FIG. 16, as the circumferential positioning means for rotating the drive shaft 11 to position the boot band 24 in the circumferential direction, the motor 106, the two gears 102 and 104, and the slide table 74 are connected to the slide table 74 via a bracket 120. And a photoelectric switch 121 for detecting the position of the tongue piece 22c of the boot band 24, and for temporarily pressing the rubber boot 15 in a state where the boot band 24 is positioned by the means. 79.

Further, the rubber boot tightening device 76
Is a bending and tightening device 122 for bending the lever portion 22b of the boot band 24 positioned by the circumferential positioning means in the circumferential direction to reduce the inner diameter of the boot band 24 and tighten the same. The tip of the lever part 22b is connected to the tongue piece part 22c of the boot band 24.
Lever fixing device 1 for fixing by caulking the shaft in the axial direction
23.

The bending and tightening device 122 includes a substrate 126 fixed to the lower surface of the slide table 74 with an adjusting screw 124, an adjusting block 125, and the like so that the mounting position in the left-right direction can be finely adjusted. A rearward facing first cylinder 131 having a pin 130 coupled to one end of a first link 129 having an L-shape in plan view via a knuckle 128 with a cylinder base end pivotally supported via 127 and a knuckle 128; The intermediate portion and the other end of the link 129 are separately connected to the one end with pins 132, respectively, and the other end is separately connected to the substrate 126 via the bracket 133 with the pins 134 to form mutually parallel links. A pair of connecting links 135, and intermediate portions of the connecting links 135 are respectively connected to the pins 136 to form the first link. A second link 137 forming a parallel link with the second link 129; a lever 140 having an intermediate portion connected to a pin 138 at one end of the second link 137 and having a cam follower 139 at the distal end; The tip of the piston rod is connected to a pin 142 via a knuckle 141 and the cylinder base is connected to the second link 137.
And a second facing cylinder 143 pivotally supported at the other end of the cylinder.

Accordingly, when the second cylinder 143 is first extended from the state in which the first cylinder 131 is extended and the second cylinder 143 is contracted as shown in FIG.
14 rotates clockwise in FIG. As a result, the cam follower 139 at the tip of the lever moves forward in an arc shape to bend the lever portion 22b of the boot band 24 from the loosely tightened state to the tightened state. Next, when the first cylinder 131 is contracted in this state, the first link 1
29 rotates counterclockwise in FIG. 14 around the pin 134 via the connecting link 135. As a result, the second link 137 supported by the connecting link 135 performs the same operation. As a result, the cam follower 139 at the tip of the lever moves backward in an arc shape, and the lever portion 2 of the boot band 24 moves.
2b is moved from the tightened state to the fixed position (see a two-dot chain line in FIG. 14).

The lever fixing device 123 includes a wide-angle hand 146 attached to the lower surface of the slide table 74 via a linear guide 145 so as to be movable in the front-rear direction, and a cylinder for moving the wide-angle hand 146. The base end is the bracket 14 on the lower surface of the slide table 74.
7, a bracket 148 coupled with a pin 148 and having a piston rod tip attached to the side surface of the wide-angle hand 146
9 and a cylinder 152 connected to a pin 151 via a knuckle 150. The wide-angle hand 146 is a normal one in which a pair of upper and lower claws 154 are opened and closed via a wedge mechanism, a link mechanism, and the like (not shown) by expansion and contraction of a cylinder 153.

Accordingly, after the lever 22b of the boot band 24 is bent from the loosely tightened state to the tightened state by the bending and tightening device 122, the cylinder 152 is extended and the wide-angle hand 146 is directed toward the boot band 24. Make them come closer, claws 1
Closing 54 allows the tongue piece 22c of the boot band 24 to be closed.
Is caulked in the axial direction, and the tip of the lever portion 22b is fixed (see FIG. 27).

On the other hand, the tightening device 77 for the resin boot is shown in FIG.
As shown in FIGS. 7 to 20, a bracket 160 is mounted on the motor 106, the gears 102 and 104, and the slide table 74 as a circumferential positioning means for positioning the boot band 23 in the circumferential direction by rotating the drive shaft 11. A pair of left and right photoelectric switches 16 which are fixed through the pair and detect the position of the protrusion 21d of the boot band 23
1 and a stopper device 162 that engages with the protruding portion 21d at a predetermined tightening position to prevent the rotation of the boot band 23, and that the boot band temporary presser temporarily presses the boot band 23 positioned by the means. Device 163
And the boot band 23 temporarily held by the device 163
Of the boot band 23 by caulking the protruding portion 21d of the boot band 23 from the circumferential direction.
64.

The stopper device 162 includes a bracket 172 fixed to the lower surface of the slide table 74 with an adjusting screw 170, an adjusting block 171 or the like so that the mounting position in the left-right direction can be finely adjusted.
A plate 173 mounted diagonally on the lower surface of the base 72;
A pair of front and rear brackets 174 are provided on the lower surface of the plate 173.
And a cylindrical guide 176 attached to the lower surface of the plate 173 to slidably guide the tip of the piston rod of the cylinder 175 through the cylinder 175. And a tip metal fitting 178 which is supported at the tip of the piston rod so as to be freely retractable and urged in the projecting direction by a compression spring 177.

The boot band temporary holding device 163 includes:
A pair of front and rear brackets 18 are provided on the lower surface of the plate 173.
The cylinder 181 includes a cylinder 181 having a cylinder portion fixed to the rear side alongside the cylindrical guide 175 via a zero, and a stopper bolt with urethane 182 connected to the tip of the piston rod of the cylinder 181.

The caulking / clamping device 164 includes a wide-angle hand 186 attached to the lower surface of the slide table 74 via a linear guide 185 so as to be movable in the front-rear direction, and a cylinder for moving the wide-angle hand 186. The base end is a bracket 187 on the lower surface of the slide table 74.
And the tip of the piston rod is wide-angle hand 18
6 comprises a cylinder 191 connected to a bracket 188 attached to the side surface of the motor 6 by a pin 190 via a knuckle 189.

The wide-angle hand 186 is shown in FIGS.
As shown in FIG.
Moves back and forth inside the boss 194 and the pin 19
It is a normal one that opens and closes a pair of left and right levers 196 that are coupled together. Claws 197 are fixed to the tips of the levers 196, respectively, and a compression spring 198 for urging these claws 197 in the opening direction is interposed between the levers 196 near the tip. Further, a roller follower 199 that is in rolling contact with the wedge 193 is attached to a base end of the lever 196.

Therefore, first, when the cylinder 175 of the stopper device 162 is extended and the tip metal member 178 is engaged with the projecting portion 21d of the boot band 23 to complete the positioning of the boot band 23 in the circumferential direction, the boot band temporary holding member is pressed. The cylinder 181 of the device 163 is extended, and the boot band 23 is temporarily held by the stopper bolt 182 with urethane. Next, the cylinder 174 is contracted to
7 is retracted, the cylinder 191 of the caulking and tightening device 164 is extended, and the wide-angle hand 186 is moved to the boot band 2.
3 and then the cylinder 192 is extended to close the pawl 154 against the urging force of the compression spring 198, so that the protrusion 21d is crimped in the circumferential direction and the boot band 23 is tightened.

With this configuration, according to the drive shaft assembling apparatus 46 according to the present embodiment, the second transporting device 40A moves toward the mounting jig 62 and the two long and short drive When the shaft 11 is attached,
First, the pawl 82 of the joint positioning device (wide-angle hand) 78 constituting the joint pull-out inspection device 71 is closed to position the shaft portion 12a of the constant velocity joint 12 at the working position.

Thereafter, the head 63 at the raised position is lowered, and the upward biasing state of the lifting bar 94 with respect to the hollow shaft 92 is maintained, and the collet chuck 97 clamps the shaft portion 12 a of the constant velocity joint 12.

In this state, the head 63 is driven to move up to drive the drive shaft 11 of the constant velocity joint 12.
A pull-out inspection. The pull-out force at this time is measured by the load cell 101. If the pull-out test is not performed with a predetermined pull-out force, it is determined that the pull-out inspection has been passed, the drive is stopped to raise the head 63, and the pull-out inspection is terminated.

Next, the mounting bracket 113 of the boot assembly position detecting device 75 is lowered from the above state, the pin 116 is brought into contact with the end surface of the boot 14 or 15, and the photoelectric switch 117 detects a predetermined assembly position. The lowering of the mounting bracket 113 is stopped.

If the mounting position of the boot 14 or 15 is proper, the slide table 74 is slid according to the type of the boot 14 or 15, and either the rubber boot tightening device 76 or the resin boot tightening device 77 is moved. Is positioned at the tightening position, and then the hollow shaft 92 and the collet chuck 97 through the motor 106 and the two gears 102 and 104.
To rotate the integral constant velocity joint 12 to position the boot band 23 or 24 in the circumferential direction.

In the case of the rubber boot 15, as described above, first, when the position of the tongue piece 22c of the boot band 24 is detected by the photoelectric switch 121, the rotation is stopped and the positioning is performed. The temporary holding device 79 is operated to temporarily hold the rubber boot 15.

Then, after the lever portion 22b of the boot band 24 is bent from the loosely tightened state to the tightened state by the bending and tightening device 122, the cylinder 152 of the lever portion fixing device 123 is extended to extend the wide-angle hand 146. Is brought closer to the boot band 24 and the claws 154 are closed, whereby the tongue piece 22c of the boot band 24 is crimped in the axial direction, the tip of the lever 22b is fixed, and the tightening operation is completed as described above. As you did.

On the other hand, in the case of the boot 14 made of resin, as described above, first, the metal fitting 178 of the stopper device 162 is engaged with the projection 21 d of the boot band 23 to position the boot band 23 in the circumferential direction. After that, the boot band temporary holding device 163 is operated to temporarily hold the boot band 23 with the urethane stopper bolt 182.

Next, after the cylinder 174 is contracted to retract the tip fitting 177, the caulking tightening device 164 is retracted.
To move the wide-angle hand 186 toward the boot band 23, and then extend the cylinder 192 to
As described above, by closing 54, the protruding portion 21d is swaged in the circumferential direction and the fastening operation is completed.

When the tightening operation of the boot band 23 or 24 on the first drive shaft 11 is completed in this way, the collet chuck 97 is unclamped to the constant velocity joint 12 by the lowering operation of the cylinder 96 and the head 63 Then, the mounting jig 62 is slid to set the second drive shaft 11 to the working position, and the assembling operation may be performed by the same operation as described above.

The present invention is not limited to the above embodiment,
It goes without saying that various changes can be made without departing from the spirit of the present invention, such as changing the number of drive shafts mounted on the mounting jig and the structure of the actuator and the wide-angle hand.

[0070]

As described above, according to the drive shaft assembling apparatus of the present invention, the drive shaft is set upright on the front surface of the column erected on the bed. A joint pull-out test for providing a pull-out test for a joint connected to a shaft end of a drive shaft to a head capable of vertically moving a column front surface above the mounting jig by an actuator while providing a mounting jig that can be held by the Since the device, a boot assembling position detecting device for confirming the mounting height of the boot with respect to the joint, and a boot band tightening device for fully tightening the boot band that has been temporarily tightened in advance around the boot are provided, the drive shaft is In the upright position, the pull-out inspection of the joint and the confirmation of the assembling height of the boots are automatically performed, and then the boot band is automatically tightened in the same state. It is. As a result, the workability can be greatly improved, while the effect that the assembling apparatus can be made compact can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a drive shaft assembling apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a longitudinal sectional view of a joint pull-out inspection device.

FIG. 5 is a side view of the same.

FIG. 6 is a plan view of the same.

FIG. 7 is an operation state diagram of the main part.

FIG. 8 is a side view of a rubber boot temporary pressing means.

FIG. 9 is a plan view of the same.

FIG. 10 is a front view of a boot assembly position detecting device.

FIG. 11 is a side view of the same.

FIG. 12 is a plan view of the same.

FIG. 13 is a right side view of a tightening device for a rubber boot.

FIG. 14 is a plan view of the same.

FIG. 15 is a front view of the same.

FIG. 16 is also a left side view.

FIG. 17 is a side view of a fastening device for a resin boot.

FIG. 18 is a plan view of the same.

FIG. 19 is a front view of the same.

FIG. 20 is an operation state diagram of the main part.

FIG. 21 is a plan view of the caulked portion.

FIG. 22 is an operation state diagram of the caulking portion.

FIG. 23 is a plan view showing a drive shaft assembling line including the drive shaft assembling apparatus of the present embodiment.

FIG. 24 is a partially cutaway perspective view showing a front axle of a vehicle.

FIG. 25 is a sectional view of a drive shaft to which a constant velocity joint, a dustproof boot, and the like are fixed.

FIG. 26 is a schematic view illustrating a method of tightening a resin dustproof boot mounted on a drive shaft.

FIG. 27 is a schematic view illustrating a method of tightening a rubber dustproof boot mounted on a drive shaft.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Drive shaft 12 Constant velocity joint 14 Resin boot 15 Rubber boot 23 Boot band 24 Boot band 60 Bed 61 Column 62 Mounting jig 63 Head 70 AC servomotor 71 Joint pull-out inspection device 74 Slide table 75 Boot assembling position Detection device 76 Tightening device for rubber boot 77 Tightening device for resin boot 78 Joint positioning device 79 Temporary holding device for rubber boot

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B23P 21/00 303 B23P 19/02 B62D 65/00

Claims (3)

(57) [Claims] 1. A front portion of a column erected on a bed,
A mounting jig capable of holding the drive shaft in an upright state is provided, and a column front surface above the mounting jig is coupled to a shaft end of the drive shaft by a head capable of moving vertically by an actuator. A joint pull-out inspection device that performs a pull-out inspection of a joint, a boot assembling position detecting device that checks the mounting height of the boot with respect to the joint, and a boot band tightening device that fully tightens a boot band that has been temporarily tightened in advance around the boot. And a drive shaft assembling apparatus characterized in that: 2. The joint pull-out inspection device is mounted on the head.
Hollow that can move downward and is supported in an upwardly biased state
The shaft and whether the hollow shaft can be moved up and down
Lifting bar inserted in the upwardly biased state, and the lifting bar
An actuator capable of descending against the urging force,
To the lower end of the
Clamp the joint and attach to the actuator
Unclamping the joint by expanding the diameter by the downward movement
The drive shaft assembling apparatus according to claim 1, further comprising a collet chuck . 3. A boot band tightening device for a rubber boot.
The tightening device and the resin boot tightening device are
Side by side with a slide table that is slidable in the horizontal direction
The tightening device for rubber boots is provided with a drive
Rotate the shaft to position the boot band in the circumferential direction
Circumferential positioning means for performing a boot band
Rubber that temporarily holds the rubber boot when the is positioned
Boot temporary holding means, and the positioned boot bun
Boot band by bending the lever part of the arm in the circumferential direction.
Bending means for tightening by reducing the inner diameter of the
The tip of the lever bent at the step is the tongue of the boot band
Lever fixing hand to fix by caulking one part in the axial direction
And the above-mentioned tightening device for resin boots has a drive system.
Rotate the shaft to position the boot band in the circumferential direction.
Circumferential positioning means for performing, and positioning by said means
Boot band temporary holding means for temporarily holding the boot band
And the outwardly protruding boot band temporarily held by the means.
The inside diameter of the boot band is reduced by crimping the part from the circumferential direction.
2. A caulking tightening means for tightening with a diameter.
A drive shaft assembling apparatus as described in the above .