JPH078111Y2 - Gear shaft disassembly / assembly device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a gear shaft disassembling / assembling device, and more particularly, to assembling and disassembling gears and other parts to various gear shafts. The present invention relates to a highly versatile gear shaft disassembling / assembling device.

(Prior Art) For example, in a gear shaft of an automobile transmission, parts of gears and bearings are often fitted and fixed. Generally, in an assembly line for assembling parts to such a gear shaft, several press-fitting press devices are provided along the line, and each part is fitted and fixed to the gear shaft one after another in a predetermined order.

In the assembly line as described above, the finished product may be defective due to improper press-fitting of the component into the gear shaft. When such a defective product occurs, it is desirable to take it out from the assembly line and redo the assembly of parts outside the line. Such work is often performed not only when the defective product is generated, but also when repairing a transmission or the like.

Conventionally, the above-mentioned work is often performed in a state that is considerably close to manual work, using a puller for pulling out and disassembling parts from a gear shaft and a relatively simple press-fitting press device. That is, when handling various gear shafts such as a primary shaft and a secondary shaft as in the case of the transmission, it is desired that the gear shaft disassembling device and the assembling device have high versatility.

As a device exclusively for press-fitting parts into a shaft such as a gear shaft, for example, a device disclosed in Japanese Utility Model Laid-Open No. 63-32727 is known. In this press-fitting and assembling device, holding means for supporting both ends of the shaft is provided so as to be movable back and forth with respect to the shaft, and a holder for supporting one of the holding means is provided with a fitting portion for supporting a press-fitting component, and the holding means is provided. The holder that supports the other of the two supports a pressing portion that presses the shaft toward the press-fitting component.

(Problems to be solved by the invention) However, if the gear shaft is disassembled and assembled using the dedicated devices as described above, the equipment cost for the work is increased and the work efficiency is increased. Also gets worse.

Further, it is conceivable that the device disclosed in Japanese Utility Model Laid-Open No. 63-32727 can be configured not only to assemble the gear shaft but also to disassemble the gear shaft. It is necessary to interpose an attachment between the gear shaft and the pressing portion in order to deal with the change in the direction of the press and the press-fitted parts. Then, because of this attachment, the gear shaft center and the component center are likely to deviate, and the shaft center alignment becomes difficult.

The present invention has been made in view of the above circumstances, and it is possible to disassemble and assemble parts by one unit for various gear shafts without causing a deviation between the gear shaft core and the parts center. It is an object of the present invention to provide a highly versatile gear shaft disassembling / assembling device that can be carried out.

(Means for Solving the Problems) In the gear shaft disassembling / assembling device of the present invention, a linearly extending guide rod and a gear shaft to which parts such as gears are fitted are parallel to the guide rod. A gear shaft holding means that holds the gear shaft so as to be movable in the long axis direction, a gear shaft holding means that is detachably provided to the gear shaft holding means and that prevents the movement of the gear shaft, and a gear shaft holding means on one end side. A pressing cylinder that moves the pressing portion that engages with the one end of the held gear shaft toward the other end, an intermediate receiving member that is movably combined with the guide rod, and A plurality of attachments that are selectively assembled to the gear shaft holding means and the gear shaft and that abut on one end side of the gear shaft or one surface of the component when the pressure cylinder is driven, and the intermediate receiving member. A plurality of component receiving tools that are attached to receive components such as gears and prevent movement of the gears in the longitudinal direction of the gear shaft, and selectively intervene between the member that supports the guide rod and the intermediate receiving member. And a plurality of spacers that are provided to define the position of the intermediate receiving member in the direction along the guide rod.

(Operation) According to the above configuration, for example, the movement of the gear shaft in the long axis direction is prevented by the gear shaft pressing means, and the fitting component is pressed by the pressure cylinder via some of the attachments. This component can be press-fitted and fitted to the gear shaft. In addition, if the direction of the gear shaft is reversed, it is possible to remove the fitted parts from the gear shaft in the same manner as above.

On the other hand, while releasing the gear shaft holding means and allowing the gear shaft to move in the long axis direction, while the parts are received by the parts receiving tool and the intermediate receiving member, the gear shaft is pressed by the pressure cylinder through the attachment. When pushed, this gear shaft moves in the longitudinal direction relative to the component, so that the component can be pulled out from this gear shaft, or conversely, the component can be press-fitted and fitted therein.

Then, press-fit and fit the parts to the gear shaft as described above,
Alternatively, when removing from it, if a plurality of attachments and spacers having a predetermined length according to the mounting position of each component is used, various gear shafts having different total lengths and component mounting positions can be handled, Furthermore, disassembly of the gear shaft,
It is possible to minimize the moving length of the parts or the gear shaft for assembling.

(Embodiment) Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

1, 2 and 3 respectively show a plan view, a side view and a front view of a gear shaft disassembling / assembling device according to an embodiment of the present invention. Further, FIG. 4 shows in detail the gear shaft holding portion of the gear shaft disassembling / assembling device. Stand
Two rod supporting members 11a and 11b are fixed to each other on the top of the rod 10, and two guide rods 12 and 12 are fixed to the rod supporting members 11a and 11b in parallel with each other. There is. A gear shaft holding member 13 is attached to one of the rod supporting members 11a (the upper one in FIG. 1). As shown in detail in FIG. 4, this gear shaft holding member 13 has a cylindrical guide portion 13a that slides in a guide member 14 fixed to a rod support member 11a, and a coil spring 15
Is urged to the right in FIG. In addition, the gear shaft holding member 13 sandwiches the flange portion 13b, and the guide portion 1
A cylindrical attachment receiving portion 13c is provided on the side opposite to 3a.

Further, at a position near the other rod support member 11b,
Gear bearings 16 and 17 for supporting an attachment to be described later from below are fixed on the 0. As shown in detail in FIG. 4, the piston rod 19 of the hydraulic cylinder 18 is inserted into the rod support member 11b so as to be movable in the left-right direction in the figure. A gear shaft holding member 20 is fixed to the piston rod 19. The gear shaft holding member 20 has a cylindrical attachment receiving portion 20a and a flange portion 20b, and the flange portion 20b and the hydraulic cylinder 18 are connected by a coil spring 21 in a tensioned state. The hydraulic cylinder 18 is supplied with hydraulic oil by the pump unit 22 and drives the piston rod 19 to extend.
That is, the hydraulic oil is supplied to and discharged from the hydraulic cylinder 18 by the lever 23 of the pump unit 22 that is reciprocally rocked and the handle 24 that is rotated.

An intermediate receiving member 25 is combined with the two guide rods 12 and 12 so as to be movable along the guide rods 12. As shown in FIG. 1, the intermediate receiving member 25 is provided with a notch 25a for passing various gear shafts, which will be described later, and a notch 25b for receiving a component receiving tool.

On the other hand, a spacer storage shelf 26 and an attachment storage shelf 27 are provided on the gantry 10, and rod supporting members 11a and 11b are also provided.
Attachment storage shelves 28 and 29 are also provided on the top. Further, on the front surface of the pedestal 10, a tool storage box 30 for storing a square-shaped component receiving tool attached to the intermediate receiving member 25, and an attachment storage panel.
31 and are provided. A work pedestal 32 is fixed to the side of the storage panel 31, and the work pedestal 32 is further fixed.
A work holder 33 is rotatably attached to the work piece 32. Further, another work holder 34 is fixed to the front surface of the gantry 10.

The disassembling and assembling of the gear shaft by the device having the above configuration will be described below. As an example, the gear shaft disassembling / assembling device of the present embodiment is intended for a gear shaft of an automobile transmission as described above, and includes a work primary shaft 40, a secondary shaft 41, and a differential gear case 42. Are work pedestals 32, 33 and 34, respectively.
It can be held upright. As described above, these workpieces are, for example, defective ones on an assembly line or repaired.

First, with reference to FIG. 4, a case where components are press-fitted into the primary shaft 40 will be described. The press-fit component in this case is the bearing 50. The total length of the primary shaft 40 is within the range indicated by L ₁ in the figure. When this component is press-fitted, the flange portion 13b of the gear shaft holding member 13 and the guide member 1
A gear shaft pressing tool 43 is arranged between the gear 4 and the gear 4. This tool 43 is of a two-part shape having a circular hole for passing the guide portion 13a in the center, and both are connected via a hinge.
They are opened by operating the engaging member 44 when detaching from the gear shaft holding member 13, and integrated with the engaging member 44 after being mounted on the gear shaft holding member 13. After the gear shaft pressing tool 43 is arranged as described above, the connecting shaft 60a at the center of the attachment 60 having a substantially cylindrical shape is inserted into the inner hole of the attachment receiving portion 13c of the gear shaft holding member 13. An annular groove having a V-shaped cross section is formed at the tip of the connecting shaft 60a, while the attachment receiving portion 13c is provided with a plurality of ball notch mechanisms having steel balls that fit into the annular groove. Are securely connected coaxially. An attachment 61 is connected to the attachment 60. This attachment 61 has a cylindrical portion that fits into the cylindrical portion 60b at the tip of the attachment 60 from the outside, and a half-divided cylindrical portion that communicates with this portion, and the latter portion of the primary shaft 40 The end is inserted. In the tapered hole at the tip of the primary shaft 40, a tapered connecting shaft 60c that is stepped out and projects from the cylindrical portion 60b is fitted, whereby the primary shaft 40 is attached to the attachment 60, that is, a gear. It is held coaxially with the shaft holding member 13.

A bearing 50 is fitted from one end (right end in FIG. 4) of the primary shaft 40. A relatively long attachment 62 having a substantially cylindrical shape is loosely fitted to one end of the primary shaft 40. In addition, a cylindrical portion 63a at the tip of the attachment 63 is inserted into the inner hole at the rear end of the attachment 62 to connect the both attachments 62, 63. This attachment 63 also has a connecting shaft 63b similar to the connecting shaft 60c of the attachment 60, and this connecting shaft 63b enters into the tapered hole at one end of the primary shaft 40, and the primary shaft 40 is coaxial with the attachment 63. Aligned. One end side of the primary shaft 40 is supported on the gear bearings 16 and 17 via the attachments 62 and 63, and the other end side is held by the gear shaft holding member 13 as described above. Held parallel to.

On the other hand, the connecting shaft 64a of the attachment 64 is inserted into the circular hole at the center of the gear shaft holding member 20. The connecting shaft 64a is similar to the connecting shaft 60a described above, and the gear shaft holding member 2
A ball notch mechanism is provided at 0, whereby the attachment 64 is held coaxially with the gear shaft holding member 20. Also, this attachment 64 is on the tip side,
It has an elastic connecting shaft 64b with a tapered tip.

From the above state, the hydraulic cylinder 18 is driven by the operation of the pump unit 22, and the piston rod 19 thereof is extended. Then, the gear shaft holding member 20 becomes the primary shaft 40.
Moving toward the side, the connecting shaft 64b of the attachment 64 becomes a tapered inner hole 63 provided at the center of the rear end of the attachment 63.
It is fitted into c and both attachments 63 and 64 are coaxially connected. The hydraulic cylinder 18 continues to be driven as it is,
Since the gear shaft pressing tool 43 described above is arranged, the primary shaft 40 cannot move. Therefore, the attachment 62 moves relative to the primary shaft 40 while the connecting shaft 63b is elastically compressed. Then, the tip end surface of the attachment 62 pushes the bearing 50, and the bearing 50 is press-fitted and fixed to the primary shaft 40. The bearing 50 is pressed into the position shown by the arrow A in FIG. When this press-fitting of the bearing is completed, the hydraulic oil in the hydraulic cylinder 18 is discharged by the operation of the pump unit 22, and the piston rod 19 contracts to the original position by the force of the coil spring 21.

The above-mentioned attachments 60, 61, 62, 63, 64 having a substantially cylindrical shape or a substantially cylindrical shape, and the attachments having a similar shape and used for press-fitting and disassembling other parts are described above. Attachment storage shelves 27, 2
It is stored in 8, 29 and a storage panel 31, and is selectively taken out from there according to each work.

Next, with reference to FIG. 5, an example of the arrangement of attachments when the parts are press-fitted into the primary shaft 40 from the side opposite to that of the bearing 50 will be described. In FIG. 5, the same elements as those in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted unless otherwise necessary (the same applies hereinafter). In this case, the primary shaft 40 is arranged in the direction opposite to the state shown in FIG. Therefore, the attachment 60 shown in FIG.
Attachments 65 and 66 are used instead of 61, respectively. That is, since the thickness of the tapered inner hole at the distal end portion of the primary shaft 40 has changed, the attachment 65 having the tapered connecting shaft 65a having the corresponding thickness is used. Further, since the outer diameter of the tip portion of the primary shaft 40 has changed, the attachment 66 having an inner hole having a diameter corresponding to that has been used. Furthermore, since the press-fitting position of the bearing 51, which is a press-fitting part, is different from that of the bearing 50,
Correspondingly, an attachment 67 shorter than that is used instead of the attachment 62 of FIG.

In this case as well, the press-fitting operation of the bearing 51 is performed in the same manner as in the case described above, and the bearing 51 is press-fitted to the position shown by the arrow B in FIG.

Next, with reference to FIG. 6, a case where the press-fitted parts are removed from the gear shaft will be described. As an example, FIG. 6 shows a state in which the third speed gear 52 and the second speed gear 53 are removed from the secondary shaft 41 shorter than the primary shaft 40. This secondary shaft
The total length of 41 is the range indicated by L ₂ in the figure. At this time, first, the gear shaft pressing tool 43 shown in FIG. 4 is removed. The attachment 60 is connected to the attachment receiving portion 13c of the gear shaft holding member 13. The connecting shaft 60c of the attachment 60 is combined with a tapered inner hole at the tip of the secondary shaft 41.

In addition, a substantially cylindrical attachment is formed in the tapered inner hole formed in the end of the secondary shaft 41 on the opposite side to the above.
68 tapered coupling shafts 68a are combined. An attachment 69, which is also in the shape of a substantially column, is connected to the attachment 68. A relatively long attachment 70 having a connecting shaft (not shown) similar to the connecting shaft 64a of the attachment 64 is connected to the gear shaft holding member 20, and the attachment 4 is connected to the tip of the attachment 70. To be done.

On the other hand, the second speed gear 53 fitted to the secondary shaft 41 is combined with the component receiving tool 80. As shown in FIG. 2, the component receiving tool 80 is composed of two members 80a and 80b that are openably and closably connected by a hinge 80c. When both the members 80a and 80b are closed, the outer shape is substantially the same. The shape is rectangular and has a circular hole 80d in the center.
Both members 80a and 80b can be kept closed by the engaging member 80e, and can be opened by operating the engaging member 80e. For example, as shown in FIG. 1, this component receiving tool 80 holds a secondary shaft 41 on a work support 32 in an upright state, and when both members 80a and 80b are opened, a predetermined portion of the secondary shaft 41 is held. By combining and then closing both members 80a, 80b,
It can be easily assembled to the secondary shaft 41. The component receiving tool 80 assembled to the secondary shaft 41 in this manner is incorporated into the cutout 25b of the intermediate receiving member 25.

The component receiving tool 80 described above, and the component receiving tool that is basically the same in shape and that is selected and used according to the press-fitted component,
It is stored in the tool storage box 30 described above.

On the other hand, a fixed spacer 81 and a replacement spacer 82 are arranged on the two guide rods 12 and 12 between the intermediate receiving member 25 and the rod supporting member 11a. These spacers 81,
Reference numeral 82 has a substantially U-shaped cross section, and the open portion is lowered downward on the guide rods 12 and 12 to be hung and held on the guide rods 12 and 12. Although only one guide rod 12 side is shown in FIG. 6, the same spacers 81 and 82 are also attached to the other guide rod 12.

The fixed spacer 81, the replacement spacer 82, and similar spacers that are selectively used instead of the spacer 82 according to the position of the press-fit component to be disassembled are stored in the spacer storage rack 26.

After the state shown in FIG. 6, when the hydraulic cylinder 18 is driven to extend the piston rod 18, the attachments 70, 6
The secondary shaft 41 is pushed to the left in the figure via 4, 69 and 68. At this time, the gear 53 is the component receiving tool 80,
Intermediate receiving member 25, replacement spacer 82 and fixed spacer 81
The secondary shaft 41 can be moved to the rod support member 11a side because there is no gear shaft pressing tool 43 described above. When the secondary shaft 41 moves relative to the gears 52 and 53 in this manner, the gears 52 and 53 are extracted from the secondary shaft 41.

When removing the press-fitting parts other than the gears 52 and 53 of the secondary shaft 41 or the press-fitting parts of the other gear shafts, a predetermined length of a suitable length is used instead of the replacement spacer 82 depending on the press-fitting position. Spacers are used, and instead of the component receiving tool 80 depending on the shape of the press-fitted component, a predetermined component receiving tool having an appropriate shape is used.

In the embodiment described above, the gear shaft is fixed when the component is press-fitted into the gear shaft, and when the component is extracted from the gear shaft, the gear shaft is made movable and the component is fixed. On the contrary, when the component is press-fitted, the component may be fixed and the gear shaft may be moved, and when the component is extracted from the gear shaft, the gear shaft may be fixed and the component may be pressed.

(Effects of the Invention) As described in detail above, in the gear shaft disassembling / assembling device of the present invention, the gear shaft is fixed and the gear shaft is movable so that the assembled parts are the component receiving tool and the intermediate receiving member. And the position of the intermediate receiving member and the attachment that is pressed by the pressure cylinder and abuts against one end of the gear shaft or one surface of the assembled component. And a plurality of spacers that define
Since the component receiving tool and the spacer are configured so that they can be selected and used according to the shape and mounting position of the component, targeting various gear shafts with different lengths and mounting positions of components,
Both parts disassembly and assembly work can be performed.

Therefore, according to this device, one unit can efficiently perform the repair and repair of the above-mentioned defective product, and further, this device can disassemble and assemble parts for the gear shaft respectively. It can be formed at a lower cost than

Further, in this device, since the intermediate receiving member that regulates the position of the parts is combined with the guide rod parallel to the gear shaft holding means, the relative positional relationship between the gear shaft and the parts is basically determined by the gear shaft holding means. Therefore, even if there is an attachment between the pressing part and the gear shaft or component, the gear shaft core and the component center will not be displaced, and the gear shaft disassembly / assembly work will be performed. Can be performed reliably and easily.

[Brief description of drawings]

1, 2 and 3 are a plan view, a partially broken side view and a partially broken front view, respectively, of an embodiment device of the present invention, and FIGS. 4, 5 and 6 are gear shafts of the above embodiment device, respectively. It is a partial fracture top view showing each state at the time of three different operations of a holding part. 11a, 11b ...... Rod support member, 12 ...... Guide rod 13,20 ...... Gear shaft holding member, 15 ...... Coil spring 13c, 20a ...... Attachment receiving part 16, 17 ...... Gear bearing, 18 ...... Hydraulic cylinder 22 …… Pump unit, 25 …… Intermediate receiving member 26 …… Spacer storage rack 27, 28, 29 …… Attachment storage rack 30 …… Tool storage box 40 …… Primary shaft 41 …… Secondary shaft 42 …… Differential gear case 43 ...... Gear shaft holding tool, 50,51 …… Bearing 52,53 …… Gear 60 to 70 …… Attachment, 80 …… Part receiving tool 81 …… Fixed spacer, 82 …… Replacement spacer

Claims (1)

[Scope of utility model registration request] 1. A linearly extending guide rod, and a gear shaft holding means for holding a gear shaft, in which parts such as gears are fitted, in parallel with the guide rod and movably in a longitudinal direction thereof. One end side of the held gear shaft is provided with a gear shaft holding means that is detachably provided on the gear shaft holding means and that blocks the movement of the gear shaft, and a pressing portion that engages with the gear shaft holding means on one end side. To the other end side, an intermediate receiving member movably combined with the guide rod along the guide cylinder, and selectively attached to the gear shaft holding means and the gear shaft, and A plurality of attachments that abut on one end of the gear shaft or one surface of the component when the pressure cylinder is driven; and the attachment that is selectively attached to the intermediate receiving member to receive the component A plurality of component receiving tools that prevent movement in the longitudinal direction, a member that supports the guide rod, and the intermediate receiving member are selectively interposed between the intermediate receiving member and the guide rod of the intermediate receiving member. Gear shaft disassembling / assembling device consisting of multiple spacers that define the position in the direction.