JP2537363B2 - How to attach the work to the rotating member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a bolt insertion hole formed in a work by superposing a work on an end surface of a rotary member mounted on a rotary shaft axially mounted on an object to be assembled. The present invention relates to an assembling method in which a fixed bolt to be inserted is tightened into a screw hole formed in a rotary member to fasten a work to the rotary member.

(Prior Art) Conventionally, when assembling a work to a rotary member, the work is manually overlapped by phase matching the screw insertion holes formed in the end face of the rotary member so that the bolts of the work match. Then, the fixing bolt is tightened with an impact wrench or the like.

(Problems to be Solved by the Invention) Since the productivity is low in the above-mentioned manual assembly, it is desired to automate the assembly.

Here, a work supply device, an assembly device having a work holding device and a nut runner, in an assembly station having a setting place for setting the object to be assembled so that the end surface of the rotating member faces upward. And the assembly object is set at the setting place, the assembly device is made to receive the work from the work supply device, and then the assembly object is set at the setting place by the assembly device. It is conceivable that the fixing bolt is placed on the end surface of the rotating member and the fixing bolt is tightened by the nut runner. The problem is how to align the phases so that the insertion hole and the nut runner are aligned on the same axis.

An object of the present invention is to provide an assembling method that solves such problems.

(Means for Solving the Problems) In order to achieve such an object, the present invention is a bolt formed on a work by superposing a work on an end surface of a rotary member attached to a rotary shaft axially mounted on an object to be assembled. In the assembling method for fastening a workpiece to a rotating member by tightening a fixing bolt inserted into the insertion hole into a screw hole formed in the rotating member, a set in which an object to be assembled is fixed so that the end surface of the rotating member faces upward. A first phasing device having a phasing jig for rotating a rotating member, a work supplying device, a second phasing device having a turntable for placing a work, in an assembly station having a place; A holding tool for holding and an assembling device having a nut runner are arranged, and an object to be assembled is set at a setting place, and then the rotating member is rotated by the first phase adjusting device so as to have a predetermined phase. Together with First, the work received from the work supply device by the assembling device was once placed on the turntable, and the turntable was rotated to align the work so that the bolt insertion hole of the worktable was aligned with the nut runner. After that, the assembling device is made to receive the work on the turntable, and then the work is mounted on the end surface of the rotating member by the assembling device so that the bolt insertion hole of the work matches the screw hole of the rotating member. The nut runner is used to tighten the fixing bolt.

(Operation) Since the work is pre-phased by the second phasing device, the assembling device can receive the work at a predetermined phase such that the bolt insertion hole matches the axis of the nut runner.
Further, since the rotating member is also pre-aligned with the first phase aligning device, it is possible to align the axis line of the nut runner with the screw hole of the rotating member when the assembling device is moved to the setting place, and thus the axis line of the nut runner. If the bolt insertion hole and the screw hole are aligned with each other and the nut runner is operated in this state, the fixing bolt is screwed into the screw hole through the bolt insertion hole, and the work is securely fastened to the rotating member.

(Embodiment) The illustrated embodiment is an ACG which is a rotary member attached to a crankshaft B which is a rotary shaft axially installed in an engine A which is an assembly object.
A cooling fan D, which is a work, is superposed on the end face of the flywheel C, and each fixing bolt F inserted into a pair of bolt insertion holes E formed in the cooling fan D is tightened in each screw hole G formed in the ACG flywheel C. Incorporating the cooling fan D into the ACG flywheel C allows the engine A to be connected to the ACG flywheel C.
It is a setting place of the assembling station where the end face of the flywheel C faces upward, and the engine A is placed on the pallet H with the end face of the ACG flywheel C facing upward. It was made possible to convey to the set place (1).

At the assembling station, a first phase matching device (4) having a phase matching jig (3) for rotating the ACG flywheel C, a work supply device (5), and a turntable on which a cooling fan D is mounted. A second phasing device (7) having (6) and a fifth phasing device for holding the cooling fan D.
Retainer (8) and nut runner (9) as clearly shown
And an assembling device (10) each of which is provided with, and after the engine A is loaded into the setting place (1) and set, the ACG flywheel C is set to a predetermined phase by the first phasing device (4). The cooling fan D received from the work supply device (5) by the assembling device (10) is once placed on the turntable (6), and the turntable (6) is rotated. After rotating, the cooling fan D is phased so that the bolt insertion hole E thereof matches the nut runner (9), and then the cooling fan D on the turntable (6) is received by the assembling device (10). Then, the cooling fan D is mounted on the end surface of the ACG flywheel C by the assembling device (10) so that the bolt insertion hole E of the cooling fan D matches the screw hole G of the flywheel C. hand, And to fastening the fixing bolt F by the nut runner (9).

More specifically, as shown in FIG. 1, the first phasing device (4) is provided with a movable mechanism (11) that is movable in three axial directions orthogonal to the front-rear direction, the lateral direction, and the vertical direction. The frame (11a) is provided with the phasing jig (3) vertically installed, and the moving mechanism (11) is horizontally moved by a motor (11b) along a long rail (12). The first slider (11c) and the motor (11d).
The second slider (11f) moved in the front-back direction along the rail (11e) provided in c) and the second slider (11f) by the motor (11g).
The movable frame (11a) is vertically moved along a guide post (11h) vertically provided on a slider (11f), and the motors (11b) (11d) ( 11
By the operation of g), a predetermined phasing position above the ACG flywheel C of the engine A fixed at the setting place (1) through the first and second sliders (11c) (11f) and the movable frame (11a). Allowed movement to and from that side's retreat position.

Further, the positioning jig (3) is a jig frame (3a) attached to the movable frame (11a) as shown in FIGS. 2 and 3.
Is provided with a rotary shaft (3b) and a positioning stopper (3c) with which the trigger I on the outer peripheral surface of the ACG flywheel C abuts, and the stopper (3c) is prevented from rotating below the jig frame (3a). In addition, it is suspended vertically against the spring (3d), and the projecting piece (3e) is moved to the lower end of the rotary shaft (3a) by the phase adjusting jig (3) to the predetermined phase adjusting position. When mounted so as to face the outer peripheral surface of the ACG flywheel C, the rotary shaft (3b)
Is connected to the output shaft of a rotary actuator (3f) provided on the upper side of the jig frame (3a), and an ACG flywheel C is operated by the actuator (3f) to move the flywheel C through the projecting piece (3e). The end surface of the trigger I of the wheel C is adapted to rotate in a predetermined phase in which it is brought into contact with the positioning stopper (3c).

The work supply device (5) is as shown in FIG.
Index rotatable table (5a) and motor (5
b) is moved up and down, and is composed of a lifter (5c) on the side of the table (5a), and a plurality of magazines J, each having a plurality of cooling fans D stacked, are placed on the table (5a), The index-rotated magazine J cooling fan D can be raised to a predetermined feeding position by one pitch by the lifter (5c).

Further, the second phase adjusting device (7) includes the turntable (6) on the upper side of the machine casing (7a), as clearly shown in FIG.
And a sensor (13) comprising a proximity switch for detecting a metal sleeve fitted with the bolt insertion hole E of the cooling fan D mounted on the turntable (6). A cylindrical support block (7a) is provided on the upper surface of the machine frame (7a), the turntable (6) is provided outside the block (7b), and the inside of the block (7b) is provided. A centering support member (6a) that supports the center of the lower side of the cooling fan D is rotatably supported via bearings, respectively, and a gear (6a) mounted below the turntable (6). ) To the machine frame (7a)
Pinion gear (7d) on the output shaft of the motor (7c) installed in
The turntable (6) and the motor (7c)
Rotation is given by the operation of the sensor, and the sensor (13) is attached to one side of the support block (7b).
Of the cooling fan D placed on the turntable (6) such that its axis matches the nutrunner (9) of the cooling fan D and the pitch circle of the bolt insertion hole E of the cooling fan D is mounted on the other side of the block (7b). A positioning pin (14) which can be inserted into the bolt insertion hole E is slidably supported on the portion, and the positioning pin (14) is connected to a piston rod of a cylinder (14a) provided on the lower side of the machine frame (7a). So that the pin (14) can be projected.

Further, the machine frame (7a) is provided with a slider (15b) that is moved forward and backward by the cylinder (15a) toward the turntable (6), and the cylinder (15b) is attached to the slider (15b).
a movable frame (15d) that is moved up and down by c), and a work retainer (15) is rotatably and vertically slidably provided on the movable frame (15d). By the operation of both cylinders (15a) (15c), a predetermined operating position above the cooling fan D mounted on the turntable (6) via the slider (15b) and the movable frame (15d) A movement to the sideward retreat position is given, and the cooling fan D on the turntable (6) is pressed by its work weight (15) by its own weight.

Further, as shown in FIG. 1, the assembling device (10) is held by the movable frame (16a) provided in a moving mechanism (16) which is movable in three axial directions orthogonal to the front-rear direction, the lateral direction and the vertical direction. Ingredients (8)
And a nut runner (9) as shown in FIG. 5, an assembling jig (17) is provided, and the moving mechanism (16) includes a rail (12) which is laterally elongated by a motor (16b). A first slider (16c) laterally moved along the first slider (16c) and a second slider (1c) moved forward and backward along a rail (16e) provided on the first slider (16c) by a motor (16d).
6f) and the movable frame (16a) vertically moved by a motor (16g) along a guide post (16h) suspended from the second slider (16f). (1
7), by operating these motors (16a) (16d) (16g), the first and second sliders (16c) (16f) and the movable frame (16a)
Via a predetermined supply position above the work supply device (5), a predetermined transfer position above the turntable (6), and a predetermined position above the ACG flywheel C of the engine A that is fixed at the set location. The movement to the assembling position of and was given.

Further, as shown in FIG. 5, the assembling apparatus (17) has a support plate (17c) below a jig frame (17a) attached to a movable frame (16a) via a guide rod (17b). The jig frame (17
The holder (8) and the nut runner (9) are provided on the support frame (17c) so that the holder (8) is suspended from the holder (a), and the holder (8) is composed of a suction cup. And a guide cylinder (9b) having a nut runner (9) and a bolt insertion port (9a) on the upper side,
Lower socket (9c) that can be fitted to the head of the fixing bolt F
A part (not shown) that includes a tightening shaft (9d) and a drive source (9e) that rotationally drives the tightening shaft (9d), and the bolt input port (9a) is provided via a supply pipe (9f). In addition to being connected to a feeder or other bolt supply source, the lower part of the guide cylinder (9b) is opened from a reduced diameter state in which the fixing bolt F does not pass to an enlarged diameter state in which the bolt F can pass against its own elasticity. A bolt holder (9g) consisting of a plurality of expandable spring plates is provided, and a tightening shaft (9d) is rotatably attached to the jig frame (17a) and is insertable from above into the guide tube (9b), The output shaft of the drive source (9e) standing on the upper side of the jig frame (17a) was connected to the tightening shaft (9b) via a gear train (9h).

In the drawing, (17d) shows four guide pins for centering provided on the lower surface of the support plate (17c) that abuts the outer periphery of the flange of the cooling fan D.

 Next, the operation of the embodiment will be described.

First, the engine A is loaded and set in the setting place on the pallet H with the end surface of the ACG flywheel C facing upward, and then the phasing jig (3) is set by the operation of the moving mechanism (11). To the phase alignment position of
The rotary actuator (3f) is actuated, whereby the lower end projection (3e) is rotated via the rotary shaft (3a) and this abuts on one end of the trigger I on the outer peripheral surface of the flywheel C, and the subsequent actuator. By the operation of (3f), the flywheel C is rotated via the projecting piece (3e), the other end of the trigger I comes into contact with the positioning stopper (3c) to stop the rotation, and the flywheel C is moved to a predetermined position. Rotated in phase.

In this case, the positioning stopper (3c) of the phase matching jig (3) is attached to the center portion of each magnet on the inner peripheral surface of the flywheel C where each ACG coil assembled to the engine A is stopped by the stopper (3c). By setting the position so that the ACG flywheel C is stably held in the predetermined phase by the magnetic force of each magnet.

Further, by operating the moving mechanism (16), the assembly jig (17) is moved to a predetermined supply position above the work supply device (5), and the cooling fan D is adsorbed and held by the holder (8). The assembly jig (17) is moved to a predetermined delivery position above the turntable (6), the cooling fan D is once placed on the turntable (6), and then the assembly jig (17) is placed on the side. After moving it away, press the cooling fan D on the turntable (6) from above with the work clamp (15),
The turntable (6) is rotated by the operation of the motor (7c), and when the sensor (13) detects the metal sleeve fitted in the bolt insertion hole E of the cooling fan D, the rotation is stopped and the positioning pin (14) is also provided. To detect.

At this time, the positioning pin (14) is inserted into the bolt insertion hole E of the cooling fan D to position and hold the cooling fan D in a predetermined phase. It is repaired by inserting 14) into the insertion hole E. When the bolt insertion hole E does not match the positioning pin (14), the positioning pin (14) pushes up the cooling fan D and separates it from the sensor (13). ) Malfunction can be detected.

Then, after the work retainer (15) is withdrawn, the assembling jig (17) of the assembling device (10) is moved to a predetermined delivery position above the turntable (6) and placed on the table (6). The cooling fan D is suction-held by the holder (8), and then the assembling jig (17) is moved to the setting place (1).

Here, since the cooling fan D is pre-phased by the second phasing device (7), the cooling fan D is attached to the assembling device (10) so that the bolt insertion hole E has the nut runner (9).
Since it can be received at a predetermined phase that matches the axis of the tightening shaft (9d), and the ACG flywheel C is also pre-phased by the first phase aligning device, the assembling device (10) is set at the set place ( When moved to 1), the axis of the tightening shaft (9d) of the nut runner (9) and the screw hole G of the ACG flywheel C
And can be matched.

Next, the assembly device (10) is assembled so that the axis of the bolt insertion hole E of the cooling fan D held by the holder (8) matches the axis of the screw hole of the ACG flywheel C at the setting location (1). The assembly jig (17) is moved while the attachment jig (17) is positioned and the tightening shaft (9d) is rotated.
It is lowered by the operation of 6). At this time, the fixing bolt F is inserted into the guide tube (9b) from the bolt insertion port (9a), and the fixing bolt F is held in advance in the bolt holder (9g).

By lowering the assembly jig (17), the cooling fan D
The head of the fixing bolt F held by the bolt holder (9g) is stopped by contacting the end face of the ACG flywheel C and further lowering of the support plate (17c) is stopped. The socket (9c) of the tightening shaft (9d) comes into contact with the bolt (F), and the bolt (F) is pushed down by the socket (9c) to move downward. At this time, the head of the fixing bolt (F) is inserted into the hexagonal hole of the socket (9c). The head of the fixing bolt F is fitted into the socket (9c) when the phase of the fixing bolt F and the phase of
Through the screw hole G of the ACG flywheel C,
The cooling fan D is securely fastened to the ACG flywheel C (state shown in FIG. 6).

After that, the assembling jig (17) is raised and the above operation is repeated, whereby the cooling fan D is attached to the ACG flywheel C.
Is assembled.

(Effects of the Invention) As described above, according to the present invention, the rotating member of the assembly, the work, and the nut runner of the assembling device are the same as the screw hole of the rotating member, the bolt insertion hole of the work, and the nut runner. There is an effect that the phases can be surely aligned so as to match with each other on the axis, and thus the work can be automatically assembled to the rotating member.

[Brief description of drawings]

FIG. 1 is an overall plan view of an assembling apparatus for assembling a work on a rotary member by the method of the present invention, FIG. 2 is an enlarged sectional view of a phase matching jig, and FIG. 3 shows its operating state. FIG. 4 is a perspective view of a main part, FIG. 4 is an enlarged cross-sectional view of a second phase matching device,
5 is an enlarged sectional view taken along line VV of FIG. 1, and FIG. 6 is ACG.
FIG. 3 is a cross-sectional view of the engine with a cooling fan attached to a flywheel. A ... Engine (attached object) B ... Crankshaft (rotating shaft) C ... ACG flywheel (rotating member) D ... Work (cooling fan) E ... Bolt insertion hole F ... Fixing bolt G ... … Screw hole (1) …… Set place, (3) …… Phase alignment jig (4) …… First phase alignment device, (5) …… Work supply device (6) …… Turn table, (7) ...... Second phasing device (8) …… Holder, (9) …… Nutrunner (10)… Assembling device

Front page continuation (72) Inventor Shintaro Takami 3707 Kokufucho, Suzuka City, Mie Prefecture 205 Hamasaki Heights (72) Inventor Masahide Maeda 12-1 Tsukiji, Tamana City, Kumamoto Prefecture

Claims (1)

(57) [Claims] 1. A screw hole in which a fixed bolt is formed in a rotary member by superposing a work on an end surface of a rotary member attached to a rotary shaft axially installed in an object to be assembled and inserting a fixing bolt inserted into a bolt insertion hole formed in the work. In the assembling method of tightening the workpiece to the rotary member by tightening the workpiece, the assembly station having a set place for setting the object to be assembled so that the end surface of the rotary member faces upward,
A first phasing device having a phasing jig for rotating a rotating member, a work supplying device, a second phasing device having a turntable for mounting a work, a holder for holding the work, and a nut runner. And an assembling device including the
The rotating member is rotated by the phase adjusting device so as to have a predetermined phase, and the work received from the work supply device by the assembling device is once placed on the turntable,
After rotating the turntable to phase-align the work so that its bolt insertion hole matches the nut runner, the assembling device is made to receive the work on the turntable, and then the work is made by the assembling device. A workpiece for a rotating member, characterized in that a bolt insertion hole of the workpiece is placed on an end surface of the rotating member so as to match a screw hole of the rotating member, and a fixing bolt is tightened by the nut runner. Assembling method.