JPH0631032B2 - Drive shaft assembly device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an assembling device for assembling a drive shaft to a knuckle, which is applied to an assembly line of an automobile or the like.

(Prior Art) In an automobile assembly line, in order to assemble a drive shaft to a knuckle, a spline of a joint member provided at an end of the drive shaft and a spline provided on an inner surface of a bearing of a hub disk must be fitted to each other. Although this has to be done, conventionally, this process has not been automated and has been done manually.

(Problems to be solved by the invention) When the drive shaft is assembled to the knuckle by hand, it takes time to align the phase of the spline groove with the drive shaft, resulting in poor productivity, and the drive shaft fitting and nut. Since it is not possible to tighten up to the same step, it is not possible to consolidate this step.

(Means for Solving Problems) In order to solve the above problems, the present invention provides a drive shaft supply device having a pressing piece for pressing an end portion of a drive shaft on one side of a knuckle, and a drive shaft holding device. A chuck device having openable and closable fingers is provided, and the drive shaft supply device and the chuck device are integrally advanced and retracted toward a knuckle by a common drive source.

Then, a separate and independent drive source is connected to the pressing piece so that the pressing piece can be independently moved toward and away from the knuckle.

Further, on the other side of the knuckle, a positioning device having a positioning head capable of phase matching with the knuckle side, and a nut runner device for tightening a nut at the drive shaft tip portion projecting through the knuckle are arranged to face each other. The positioning device and nut runner device can be moved forward and backward toward the knuckle by their respective drive sources, and the assembly process of the drive shaft is automated.

(Function) The drive shaft is held by the chuck device on one side across the knuckle, and the drive shaft is inserted into the knuckle by pressing the end of this drive shaft with the pressing piece of the drive shaft supply device. Is performed by a combination of a common drive source and a separate and independent drive source,
For example, by gently pressing the spline when it is inserted at the time of insertion, galling is prevented and smooth insertion is possible.

Further, by providing the positioning device with a positioning head capable of performing phase matching with respect to the knuckle side, the knuckle can be positioned reliably and easily.

Then, this phase matching is performed, for example, by fitting the recessed portion provided in the positioning head into the hub bolt of the hub press-fitted into the knuckle.

(Example) Below, the Example of this invention is described based on an accompanying drawing.

FIG. 1 is a schematic view showing an example in which the carrier device according to the present invention is applied to a line for assembling members such as a drive shaft to a knuckle arm, and FIGS. 2 (A) to (I) are views showing an assembling order. Is.

The outline of the assembly of the knuckle arm and other members will be described below with reference to FIGS. 1 and 2.

Two transport paths (2), (3) are formed in the upstream part of the base (1), a traveling body (4) is provided on one of the transport paths (2), and this traveling body (4) is provided on this traveling body (4). A pallet (5) is attached, a knuckle (6) is held on this pallet (5), while a hub (8) to which a brake disc (7) is fixed is placed on the transport path (3).
Carried in parallel with the knuckle (6). By the way, as shown in FIG. 2 (A), the knuckle (6) has a hole (9) into which a hub (8) and a joint are fitted, and an arm (10) which is connected to a lower arm from the base. ), The arm (11) coupled to the shock absorber is extended, and the brake caliper mounting bracket (12) is integrally formed.

Then, the knuckle (6) held on the pallet (5) is driven by the traveling body (4) to move the wheel bearing supply device (1).
3) and the position of the dust seal supply device (14), and at this position, as shown in FIG. 2 (B), the wheel bearing (15) and the dust seal (16) are placed in the hole (9) of the knuckle (6). ) Is press-fitted.

Next, the knuckle (6) is conveyed to the position of the circlip supply device (17) by traveling of the traveling body (4), and at this position, the circlip (18) is supplied by press-fitting as shown in FIG. 2 (C). Then, after that, the knuckle (6) is further conveyed, and the splash guard (20) is attached and tightened and fixed at the position of the splash guard supply device (19) as shown in FIG. 2 (D).

After that, the knuckle (6) is conveyed to the position of the hub supply device (21), and as shown in Fig. 2 (E), the hub (8) with the preliminarily brake disc (7) fixed to the knuckle (6). Supply press fit,
Drive the traveling body (4) and swing the pallet (5) so that the knuckle (6) is swung 90 °, that is, the hole (9) of the knuckle (6) is in a horizontal position. After transporting to the position of the supply device (22), the joint member (24) of the drive shaft (23) is spline-fitted to the hub (8) as shown in FIGS. 2 (F) and (G), and the spindle nut (25) ) To fix it.

After this, the spindle nut (25) is crimped by the crimping device (26), and the brake caliper (27) is fixed to the bracket (12) of the knuckle (6) as shown in FIG. 2 (H). (I)
An assembly (28) as shown in is obtained.

To assemble the drive shaft (23) to the knuckle (6),
A constant velocity joint member (24) is attached to one end of the drive shaft (23), and this joint member (24) is
A joint member (24) protruding from the hub (8) to the opposite side after spline-fitting to the hub (8) rotatably mounted in the hole (9) of the knuckle (6) via the wheel bearing (15).
The spindle nut (25) is tightened at the tip of the assembly. This assembly device will be described with reference to FIGS. 3 and 4. Here, Fig. 3 is a general view of the assembling device (100) viewed in a direction orthogonal to the conveying direction of the knuckle (6), and Fig. 4 is a relationship between the nut runner device (101) and the positioning device (102). FIG.

The assembly device (100) has a nut runner device (101) and a positioning device (102) on one side (left side in FIG. 3) and a drive shaft on the other side (right side in FIG. 3) based on the knuckle (6). A supply device (22) and a chuck device (103) are arranged.

First, the drive shaft supply device (22) and the chuck device (1
03), knuckle (6) on base (1)
Rails (104) are laid in the direction orthogonal to the transport direction of
The legs (106) of the table (105) are engaged with the rails (104), and the cylinder unit (107) fixed to the base (1) is actuated to move the table (105) forward and backward with respect to the knuckle (6). I'm trying to retreat.

And the connecting rod (1
The chuck device (103) is attached via the (08), and this chuck device (103) is provided with the finger (110) which is opened and closed by the cylinder unit (109), and the rail (104).
Is engaged with. Thus, the chuck device (103) also moves back and forth with respect to the knuckle (6) integrally with the table (105).

On the table (105) there are rails parallel to the rails (104).
(111) is laid and a support plate (112) is erected at the rear part, and the hydraulic cylinder unit (113) is fixed to this support plate (112). The rod (114) of this hydraulic cylinder unit (113) extends onto the table (105) and
The leg (115) attached to the rail engages with the rail (111), and the tip of the rod (114) is attached with a pressing piece (117) through an elastic mechanism (116). ) Is the rod (11
4) The air cylinder unit (118) fixed on the top of the hydraulic cylinder unit (113) separates and pushes it out to the knuckle (6) side.

Next, the nut runner device (101) and the positioning device (102) will be described. Nut runner device (101) is the base
(1) The leg (121) engages with the rail (120) laid above,
The cylinder unit (122) operates to move back and forth with respect to the knuckle (6), and the positioning device (102) engages the rail (123) laid on the base (1) with the legs (124), and The unit (125) is operated to move back and forth with respect to the knuckle (6).

By the way, FIG. 4 shows a state in which the upper half is tightening the spindle nut and the lower half is in a standby state.
The positioning device (102) will be described in detail with reference to the drawings. The positioning device (102) is mounted on the rail (123) on the leg (1) of the base (126).
24) engages with each other, and the tubular member (128) is laterally fixed to the support plate (127) provided upright on the base (126). Then, the rotating member is mounted on the outer peripheral portion of the tubular member (128) through the bearing (129).
(130) is installed.

A bearing receiver (132) is fixed to the rear end surface of the rotating body (130) by a screw (131), and a gear part (1) is attached to the rear outer peripheral surface.
33) is engraved, and the rack (134) meshes with the gear (133). The lower surface of the rack (134) has a receiving member (13
5) and reciprocates in the direction perpendicular to the paper surface of FIG. 4 by a cylinder unit (not shown).

In addition, a spline (136) is formed at the tip of the rotating body (130), and the spline groove (138) of the sliding body (137) is fitted into this spline (136), and the rear surface of this sliding body (137). And the rotating body
(130) Spring between the seat (139) fixed to the outer circumference
Via (140).

Further, a positioning head (142) is fixed to the front end surface of the sliding body (137) with a bolt (141). This positioning head
A recess (143) where the hub bolt (8a) fits in the key part of (142)
Are formed.

On the other hand, the support plate (127) has a cylinder unit (144).
(See FIG. 3) is fixed in the vertical direction, and a receiving plate (146) having a bifurcated lower part is fixed to a rod (145) protruding downward of the cylinder unit (144). This backing plate
(146) is the positioning device (102) is moved forward and the positioning head
(142) It acts as a reaction force receiving when the hub bolt (8a) contacts the tip. That is, the cylinder unit (12
When the positioning device (102) moves forward by the operation of 5), the cylinder unit (144) operates to lower the receiving plate (146), and the receiving plate (146) supports the rear surface of the bearing receiver (132). As a result, the retreat of the rotating body (130) is prevented, and when the hub bolt (8a) does not enter the recess (143) of the head (142) and hits the end surface of the head (142), the sliding body (137) and the head (142). Only) retracts against the spring (140).

In the nut runner device (101), a motor (151) and a rotary shaft (152) rotated by the motor (151) are supported on a base (150) as shown in FIG. 3, and a tip of the rotary shaft (152) is supported. A nut holder (153) is attached to the portion as shown in FIG. The nut holder (153) has a substantially tubular shape, and a tip (15) into which the spindle nut is fitted is inserted.
4) is formed, and a square hole (155) is formed in the rear part, and the corner portion of the tip of the rotating shaft (152) engages with this square hole (155), and the rotating shaft (152) and nut holder The pin (156) engages with the slit of (153), and the rotating shaft (152) and nut holder (15
3) and are designed to rotate together. In addition, a spring (157) is provided between the nut holder (153) and the rear end face of the rotary shaft, and the nut holder (153) is urged forward, and further inside the nut holder (153). Has a holder (158) for receiving and holding the spindle nut, and the holder (158) is biased forward by a spring (159).

Next, the operation of the drive shaft assembling device will be described.

First, activate the cylinder unit (107) to move the table (1
05) and the chuck device (103) are retracted, and in this state, the drive shaft (23) is delivered to the chuck device (103) by using a loading device (not shown) and driven by the finger (110) by the operation of the cylinder unit (109). Hold the shaft (23). When the table (105) is retracted, the hydraulic cylinder unit (113) is also operated to retract the rod (114) and the pressing piece (117). The amount is based on the length of (23).

From this state, the cylinder unit (107) is actuated to move and fix the drive shaft (23) in accordance with its length. Then, move the hydraulic cylinder unit (113) forward, and
When the tip of (24) approaches the hub (8), the hydraulic cylinder unit (113) is deactivated, and then the air cylinder unit (118) is activated and the pushing piece (117) is used to drive the drive shaft (23). Loosely push into the mating part of the hub (8). At this time, if the phase of the hub (8), the fitting part, and the joint member (24) is out of phase, the operation of the air cylinder (118) will stop, so after performing phase alignment again, the tip of the joint member (24) Plug into the mating part of the hub (8).

Then, the hydraulic cylinder unit (113) is actuated to push
The tip of the joint member (24) is strongly pushed into the fitting portion of the hub (8) via the (117), and the tip of the joint member (24) is projected toward the nut runner device (101). In this way, the air cylinder (11
8) Use to loosely insert to prevent galling.

Next, the tightening action of the spindle nut (25) will be described.

First, using a parts feeder (not shown), the spindle holder (25) is supplied and held in advance to the nut holder (158) at the tip of the nut holder (153) of the nut runner device (101).

Then, the cylinder unit (125) is operated to advance the positioning device (102), and the recess (1) of the positioning head (142) is moved.
Fit the hub bolt (8a) into 43). Where the hub bolt
Since it is possible that the hub bolt (8a) will not fit into the recess (143) due to the phase shift of (8a), in this embodiment, the rack (134) is moved, the tubular member (130), and the rotation member are rotated. Body (1
37) Rotate the positioning head (142) and move it forward.

Then, for example, the hub bolt (8a) is attached to the recess (1) of the head (142).
Even if the head (142) hits the end face of the head (142) without entering the (43), the head bolt (142) rotates while retracting against the spring (140), so that the hub bolt (8a) is securely inserted in the recess (143). Fit in. And the reaction force in the axial direction at this time is the receiving plate (146).
By.

In parallel with the above operation, or after the phase adjustment of the hub (8) is completed, the cylinder unit (122) is operated to move the nut runner device (101) forward, and the rotation axis of the nut runner device (101) ( 152) is inserted into the tubular member (128) of the positioning device (102) as shown in the upper half of FIG. 4, and is preliminarily held by the nut holder (158) in the nut holder (153). Fit the spindle nut (25) into the tip of the joint member (24) protruding from the hub (8), then drive the motor (151) to rotate the rotating shaft (152) and the nut holder (153), Tighten the spindle nut (25) onto the joint member (24).

By the above operation, the assembly in which the hub (8) and the drive shaft (23) are attached to the knuckle (6) can be obtained.

As described above, when the spindle nut (25) is fastened to the tip of the joint member (24) by the nut runner device (101), the knuckle (6) and the drive shaft (2
While holding 3) on the pallet (5), convey it to the position of the caulking device (26) and then caulk the spindle nut (25).

As described above, according to the present invention, the drive shaft supply device and the chuck device are arranged on one side and the positioning device and the nut runner device are arranged on the other side through the knuckle. Can be quickly and surely assembled to the knuckle, the productivity can be improved, and the fitting of the drive shaft and the tightening of the nut can be performed in the same step, so that the steps can be integrated.

Moreover, since a common drive source and a separate and independent drive source are combined as the drive source for the pressing piece of the drive shaft supply device, the drive shaft can be smoothly inserted into the knuckle.

Further, by providing the positioning device with a positioning head capable of phase matching, positioning on the knuckle side can be performed reliably and easily.

[Brief description of drawings]

FIG. 1 is a schematic view of an assembly line centering on a knuckle, FIGS. 2 (A) to (I) are perspective views showing an assembling procedure of a knuckle and other members, and FIG. 3 is a spindle nut assembling device. The general view and FIG. 4 are cross-sectional views showing the relationship between the nut runner device and the positioning device. In the drawing, (1) is the base, (2) and (3) are the transport paths, (4) is the moving body, (5) is the pallet, (6) is the knuckle, (8) is the hub,
(8a) is a hub bolt, (22) is a drive shaft supply device,
(23) is a drive shaft, (100) is an assembly device, (101)
Is a nut runner device, (102) is a positioning device, (103)
Is a chuck device, (107), (109), (122), (125), (144) are cylinder units, (110) is fingers, (113) is a hydraulic cylinder unit, (114) is a rod, (118) Is the air cylinder unit, (130) is the rotating body, (134) is the rack, (14)
2) is a positioning head, (152) is a rotating shaft, and (153) is a nut holder.

Continuation of the front page (56) Reference JP-A-59-199380 (JP, A) Actually opened 58-164633 (JP, U) Actually opened 60-35 (JP, U)

Claims (1)

[Claims] 1. An assembling device for assembling a drive shaft to a knuckle, comprising: a drive shaft supply device having a pressing piece for pressing an end portion of the drive shaft on one side of the knuckle, and an opening / closing means for holding the drive shaft. A chuck device having free fingers is provided so that the drive shaft supply device and the chuck device can be integrally advanced and retracted toward a knuckle by a common drive source, and the pressing piece is independent of each other. A drive source is connected to the knuckle to allow it to move back and forth independently, and on the other hand a positioning device equipped with a positioning head that can adjust the phase to the knuckle side, and a nut at the tip of the drive shaft protruding through the knuckle. The nut runner devices for tightening the Thus assembling device of the drive shaft, characterized in that the freely advancing and retreating toward the knuckle.