JPH0442074Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a pressure welding device, and particularly to one that rotates and presses a pair of objects to be pressed relative to each other, and also that suddenly stops the rotation and presses them. For example, the present invention relates to something useful for manufacturing a torque rod to be mounted on a rear-wheel two-axle vehicle.

[Conventional technology]

There is a torque rod as shown in FIG. 6 that is mounted on a rear wheel two-axle vehicle, and a pressure welding device is sometimes used to manufacture this torque rod. That is, the torque rod shown in FIG. 6 consists of ring-shaped shaft coupling members 2A and 2B fixed to both ends of the rod body 1, respectively, and the pair of shaft coupling members 2A and 2B are attached to the rod body 1 by a pressure-welding device. are pressed into contact with each other.

In this case, a predetermined correlation is set in the axial direction between the shaft coupling members 2A and 2B at both ends. Incidentally, in FIG. 6, the axes of the shaft coupling members 2A and 2B are parallel to each other, and the rod body 1
are set to be perpendicular to the axis of each. Therefore, when one shaft coupling member 2A is pressed against the rod main body 1, it is necessary to finish the pressure contact and fix the shaft joint member 2B at a predetermined relative position (phase) with respect to the axial direction of the other shaft joint member 2B.

As a pressure welding device that meets this requirement, there is one shown in FIGS. 7 and 8. This pressure welding device 40 includes one shaft coupling member 2 as a press welded object.
A rotation transmission gear device 42 for transmitting the rotation of the rotation shaft 41 gripping A, a clutch device 43 interposed between the pressurized object rotation shaft 41 and the rotation transmission gear device 42, and a rotation transmission gear device The shaft coupling member 2A is provided with a pinion rack device 44 for converting the rotational motion of the rack device 42 into a direct motion, and a stop device 45 for stopping the linear motion of the rack device 44. When the rotation angle is reached, the clutch device 43 connects the rotary shaft 41 and the rotation transmission gear device 42, and the rotation of the rotation transmission gear device 42 is stopped by the stop device 45 via the pinion/rack device 44. By this,
Some devices are configured to relatively suddenly stop the pressurized object rotation shaft 41 at a predetermined phase.

[Problem that the invention attempts to solve]

In such a pressure welding device, an extremely large impact is applied to the stop device 45 during a sudden stop;
There is a problem in that the stop device 45 is subject to significant wear and tear, resulting in increased downtime of the pressure welding device and increased running costs.

An object of the present invention is to provide a pressure welding device that is easy to maintain and manage and can provide high positional accuracy.

[Means for solving problems]

The pressure welding device according to the present invention includes a bed 4, a first chuck device 5 disposed on the bed 4 and fixedly gripping the first object 1 to be pressed, and a pressure welding device 5 disposed on the bed 4 opposite to the first chuck device 5. A bearing device 6 disposed in A rotating shaft 8 is supported and rotationally driven by a drive device 9, and a second chuck device 10 is mounted to rotate integrally with the rotating shaft 8 and fixedly grips the second object to be pressed 2A. , a pressure welding device including a phase control device 11 that suddenly stops the rotating shaft 8 when the second pressure welding object 2A reaches a predetermined phase during pressure welding, the phase control device 11 a cam 12 disposed at the rear end of the second chuck device 10 so as to rotate integrally with the cam 12 and having a contact portion 13 protruding from its outer periphery; a holder 17 which is disposed opposite to the cam 12 so as to be movable in the radial direction of the cam 12 and is driven to advance and retreat in that direction by a drive device 16; a stopper 19 whose one end contacts the contact portion 13 of the cam 12 when the holder 17 is in the forward position; The stopper regulating device 21 is provided with a stopper regulating device 21 that cushions the impact of the stopper 19 at the time of an impact, and the stopper regulating device 21 further includes a housing 23 fixed to face the other end of the stopper 19; a first cushion member 27 and a second cushion member 28 that are housed in the housing 23 adjacent to each other in the direction of the impact of the stopper 19; The second cushion member 28 is formed to have a harder cushion than the first cushion member 27, and the first cushion member 27 and the second cushion member 28 are such that the stopper 19 is connected to the impact receiving member. 29, the first cushion member 27
The second cushion member 28 is characterized in that the cushioning member 28 is configured so that the second cushion member 28 performs the cushioning after the cushioning is performed.

[Effect]

When a sudden stop occurs at the end of the pressure welding action, when the impact is applied to the regulating device, this regulating device is essentially configured as a shock absorber, so the impact is very effectively alleviated and a repulsive force is applied. stop the vehicle properly and reliably.

That is, when an impact is applied to the impact receiving member, the impact receiving member first comes into contact with the first cushion member. By compressing and deforming the first cushion member, the applied impact is alleviated.
At this time, since the first cushion member is made of cork material or the like, it provides a very effective cushioning effect. When the first cushion member is compressed and deformed, the impact receiving member contacts the second cushion member. Since this second cushion member is configured to be hard, the shock receiving member 29, which has already been sufficiently cushioned by the first cushion member, is further cushioned.
It will be stopped precisely.

As a result, the rotating shaft, whose position is regulated by the impact receiving member, is properly and reliably buffered and regulated in position, so that the fixed shaft is precisely stopped with a predetermined phase without receiving any repulsive force, and the object to be pressed is stopped precisely. Both are properly pressed and fixed with a predetermined phase.

〔Example〕

FIG. 1 is a front sectional view showing a phase control device in a pressure welding device which is an embodiment of the present invention, FIG. 3 is an exploded perspective view showing the part shown in FIG. 2, FIG. 4 is an overall perspective view showing the pressure welding device, and FIG. 5 is an enlarged partial perspective view showing the main part of FIG. 4.

In this embodiment, the pressure welding device 3 is configured to press the shaft coupling member 2A, which is one object to be pressed, to the rod body 1, which is the other object to be pressed, and includes a bed 4. A chuck device 5 is fixedly disposed in the middle on the bed 4, and this chuck device 5 is configured to be able to fixedly hold the rod body 1 with its axis line horizontal. There is. A bearing device 6 is disposed on the bed 4 so as to face the chuck device 5 and is slidably installed in the longitudinal direction (hereinafter referred to as the front-back direction). It is configured to be driven forward and backward by a pair of cylinder devices 7 installed at one end (hereinafter referred to as the rear end). A rotary shaft 8 is rotatably supported on the bearing device 6 with its axis aligned with the chuck device 5, and the rotary shaft 8 is rotated by a motor 9 installed on the bearing device 6 via a wrap transmission device 9A. configured to be driven. A second chuck device 10 is mounted on one end of the rotating shaft 8 so as to rotate together with the second chuck device 10, and this chuck device 10 is configured to fixedly grip the shaft coupling member 2A.

The rotating shaft 8 has a cam 1 in a phase control device 11.
2 is arranged at the rear end of the second chuck device 10,
The cam 12 is packaged so as to rotate integrally with the cam 12, and a contact portion 13 is provided protruding from the outer periphery of the cam 12. on the other hand,
A support frame 14 of the phase control device 11 is arranged and fixed to the bearing device 6 so as to face the outer periphery of the cam 12, and a guide recess 15 extends in the radial direction of the cam 12 in the frame 14. It is formed like this. The holder 1 is placed in the guide recess 15.
7 is slidably fitted in the cam 12 so that it can move forward and backward in the radial direction, and this holder 17 is configured to be driven forward and backward by a cylinder device 16 fixed to the frame 14. A guide hole 18 is provided in the holder 17 and is arranged to extend in the tangential direction of the cam 12.
A stopper 19 is slidably fitted into and supported by the stopper 19. The stopper 19 is made of steel or the like, and includes a rectangular column-shaped portion 19a and a rectangular flat plate-shaped portion 19b connected orthogonally to one end thereof.
It is equipped with Flat plate shaped portion 19b and holder 17
A compression spring 20 is interposed between the guide hole 18 and the stopper 19 so that the stopper 19 is always urged in the direction of being pushed out from the guide hole 18.

In the bed 4, a stopper regulating device 21 according to the present invention in the phase control device 11 is attached to the shaft coupling member 2A.
The stopper regulating device 21 is arranged in a position where it can face one end of the stopper 19 during press-welding work with the rod main body 1, and is fixed via a support 22, and this stopper regulating device 21 is substantially configured as a shock absorbing device. .

That is, a housing 23 is fixedly supported on the support 22, and the housing 23 is assembled using structural steel or the like into a substantially regular hexahedral box shape with one side open. Inside the housing 23, a small-diameter chamber 24 and a large-diameter chamber 25 are formed separately on the bottom side and the opening side, and a shoulder is provided at the boundary between the small-diameter chamber 24 and the large-diameter chamber 25. 26 is formed into a rectangular frame shape. A first cushion member 27 is housed in the small diameter chamber 24 and is formed into a substantially rectangular parallelepiped shape so that a space remains on the shoulder 26 side of the small diameter chamber 24, and the first cushion member 27 will be described later. It is manufactured using a softer material than the second cushion member. On the other hand, a second cushion member 28 formed in the shape of a rectangular frame is housed in the large diameter chamber 25 and is arranged so as to come into contact with the shoulder 26. It is manufactured using a material harder than 27.

In this embodiment, as the first cushion member 27, a material obtained by compressing and deforming cork material to remove distortion is used, and as the second cushion member 27, cork material is used.
8 is molded from hard urethane resin.

The opening of the housing 23 is made of steel and has a diameter of about 2 mm.
A shock receiving member 29 formed in the shape of a stepped plate is slidably fitted with its axes aligned, and the small diameter portion 30 of this shock receiving member 29 passes through the frame of the second cushion member 28. The large diameter section 31 of the housing 23 is connected to the small diameter chamber section 24 of the housing 23 .
5, respectively. Further, the impact receiving member 29 has a striking seat portion 32 formed in a substantially trapezoidal shape and integrally protruding from the impact receiving member 29. It is arranged so as to face the end face as close as possible. In this state, the end face of the small diameter portion 30 of the impact receiving member 29 is in contact with the first cushion member 27, and as a result, the end face of the large diameter portion 31 is slightly spaced apart from the second cushion member 28. It's summery.

Next, the action will be explained.

The rod main body 1 with one end of the shaft coupling member 2B press-welded is attached to the first chuck device 5 with the other end facing rearward so that the axial direction of the shaft coupling member 2B is in a predetermined direction (vertical in this embodiment). ) and is fixedly gripped. Further, the shaft coupling member 2A to be press-contacted is attached to the second chuck device 10 with the press-contact surface facing forward and its axial direction perpendicular, and is fixedly held.

Subsequently, the rotating shaft 8 is rotated by the motor 9 via the winding transmission device 9A, and the bearing device 6
is advanced by a cylinder device 7 for pressing. As the bearing device 6 moves forward, the shaft coupling member 2 held by the rotating shaft 8 via the second chuck device 10
Since the shaft coupling member 2A is rotated and pressed against the rod body 1 which is immovably held by the first chuck device 5, the shaft coupling member 2A and the rod body 1 are frictionally welded.

At the end of the friction welding, the rotary shaft 8 is stopped driving and rotates idly under the control of a timer or the like, and the cylinder device 16 in the phase control device 11 is extended under the control of a limit switch or the like. Due to the operation of this cylinder device 16, the holder 17 moves into the guide recess 15 of the frame 14.
Since the stopper 19 is guided by and moved inward in the radial direction of the cam 12, the stopper 19 is positioned on a tangent to the cam 12.

After the cylinder device 16 is activated, when the rotary shaft 8 rotates by a predetermined phase difference (rotation angle), the contact portion 13 of the cam 12 collides with the end surface of the flat plate-shaped portion 19b of the stopper 19 at right angles. At this time, since the stopper 19 is positionally regulated by the regulating device 21 at the end face of the square columnar section 19a, the rotation of the cam 12 is stopped at the contact section 13. Therefore, the rotating shaft 8 to which the cam 12 is fixed is stopped from rotating.

As a result, the shaft coupling member 2A is pressed against and fixed to the rod body 1 in a phase in which the rotating shaft 8 is stopped, that is, in a phase regulated by the stopper 19. The phase at which this shaft coupling member 2A is pressed against the rod body 1 has a preset correlation with the phase of the shaft coupling member 2B which is already pressed against the other end, that is, in this embodiment, both shafts are The center directions are perpendicular and parallel to each other.

By the way, in the phase control device 11, the cam 1
When the contact portion 13 of No. 2 collides with the stopper 19, the impact is applied by the stopper 19 to the regulating device 21 that regulates the position of the stopper 19. However, since this regulating device 21 is substantially configured as a shock absorbing device, the stopper 19 can very effectively reduce the impact, and can properly and properly move the cam 12 without applying a repulsive force to the contact portion 13. It will definitely bring you to a sudden stop.

That is, when an impact is applied to the impact receiving member 29 by the stopper 19 due to the collision of the contact portion 13 of the cam 12, the end surface of the small diameter portion 30 of the impact receiving member 29 is in contact with the first cushion member 27. As the first cushion member 27 is compressed and deformed, the applied impact is alleviated. At this time, since the first cushion member 27 is made of cork material, the cushioning effect is extremely effective. When the first cushion member 27 is compressed and deformed, the end surface of the large diameter portion 31 of the impact receiving member 29
It contacts the cushion member 28. Since the second cushion member 28 is hard, the shock receiving member 29, which has already been sufficiently damped by the first cushion member 27, is further damped and precisely stopped.

As a result, the stopper 19 whose position is regulated by the impact receiving member 29 is properly and reliably buffered and regulated in position, so that the cam 12 and the rotating shaft 8 are precisely stopped with a predetermined phase without being subjected to repulsive force. The shaft coupling member 2A is properly pressed and fixed to the rod main body 1 with a predetermined phase.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and may be modified without departing from the gist thereof.
It goes without saying that various changes are possible.

For example, the shapes, structures, etc. of the cam, stopper, and holder are not limited to the configurations shown in the embodiments described above, but are desirably selected appropriately in accordance with the conditions of the objects to be pressed together and their pressure-bonded fixation.

The device for applying an impact to the regulating device to suddenly stop the rotation is not limited to the phase control device shown in the above embodiment.

In the above embodiment, when manufacturing a torque rod, the shaft coupling member is pressed against the rod main body with a predetermined phase. The present invention can be applied to any type of pressure welding device that performs pressure contact while rotating and suddenly stops rotation.

[Effect of idea]

As explained above, according to the present invention, by extremely effectively alleviating the impact applied to the position regulating device when the rotation suddenly stops, it is possible to avoid the adverse effects caused by its wear and tear.
It is possible to realize appropriate pressure welding and fixing work with high precision while easing maintenance and management.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing a phase control device in a pressure welding device which is an embodiment of the present invention, FIG. 3 is an exploded perspective view showing the part shown in FIG. 2, FIG. 4 is an overall perspective view showing the pressure welding device, and FIG. 5 is an enlarged partial perspective view showing the main part of FIG. 4. FIG. 6 is a perspective view showing a torque rod as a pressurized object, and FIGS. 7 and 8 are a partially cutaway front view and a perspective view showing a conventional example. 1...Torque rod main body (pressure contact object), 2A,
2B... Shaft coupling member (object to be pressed), 3... Pressure welding device, 4... Bed, 5... First chuck device, 6
... Bearing device, 7 ... Cylinder device, 8 ... Rotating shaft, 9 ... Motor, 9A ... Wrap transmission device, 10
...Second chuck device, 11...Phase control device,
12...Cam, 13...Contact portion, 14...Support frame, 15...Guide recess, 16...Cylinder device, 17...Holder, 18...Guide hole, 19
... Stopper, 20 ... Spring, 21 ... Stopper regulation device (shock device), 22 ... Support,
23...Housing, 24...Small diameter chamber, 25...
...Large diameter chamber part, 26...Shoulder part, 27...First cushion member (cork material), 28...Second cushion member (urethane resin), 29...Shock receiving member,
30... Small diameter part, 31... Large diameter part, 32... Batting seat.

Claims (1)

[Claims for Utility Model Registration] (1) A bed 4 and a first chuck device 5 disposed on the bed 4 to fixedly grip the first pressurized object 1.
a bearing device 6 disposed on the bed 4 to face the first chuck device 5; a drive device 7 for driving the first chuck device 5 and the bearing device 6 forward and backward relative to each other; A rotary shaft 8 which is rotatably supported in alignment with the first chuck device 5 and is rotatably driven by a drive device 9; A second chuck device 10 that fixedly grips the object 2A, and a phase control device 11 that suddenly stops the rotating shaft 8 when the second pressure object 2A reaches a predetermined phase during pressure welding.
In the pressure welding device, the phase control device 11 is disposed at the rear end of the second chuck device 10 on the rotating shaft 8 and is externally packaged so as to rotate together with the second chuck device 10, and is in contact with the outer periphery. A cam 1 with a protruding portion 13
2, a holder 17 which is disposed on the bearing device 6 to face the cam 12 and to be movable forward and backward in the radial direction of the cam 12, and which is driven forward and backward in that direction by the drive device 16; a stopper 19 that is slidably supported in the tangential direction of the cam 12 and has one end in contact with the contact portion 13 of the cam 12 when the holder 17 is in the forward position; and a position opposite to the other end of the stopper 19. The stopper 19 is disposed at the contact portion 13 and
The stopper regulating device 21 further includes a housing 23 fixed to face the other end of the stopper 19, and a housing 23 attached to the housing 23. The impact receiving member 29 is fitted so as to be in contact with the impact receiving member 29.
and, first and second parts housed in the housing 23 adjacent to each other in the impact direction of the stopper 19.
It includes a cushion member 27 and a second cushion member 28, the second cushion member 28 having a harder cushion than the first cushion member 27, and the first cushion member 27 and the second cushion member 28. is characterized in that when the stopper 19 comes into contact with the impact receiving member 29, the first cushion member 27 performs the shock absorption, and then the second cushion member 28 performs the shock absorption. pressure welding device. (2) The first cushion member 27 is made of cork material, and the second cushion member 28
The pressure welding device according to claim 1(G) of the utility model registration, characterized in that the pressure welding device is constructed using a hard urethane resin.