JPS59191521A - Straightening device for deformation of cast wheel for motorcycle for which light alloy is mainly used - Google Patents

Abstract

PURPOSE:To straighten the deformation of a cast wheel for a motorcycle with ease in the stage of straightening the deformation such as twist, bend, etc. of the cast wheel by fixing the wheel by a clamping device and an attaching device and using a straightening device provided with supporting pieces and a pressing piece for straightening the deformed part. CONSTITUTION:A cast wheel formed of an Al alloy, etc. which is subjected to a relatively light degree of deformation such as twist, bend, etc. by collision, fall, etc. is attached freely rotatably in an attaching position 2 of a straightening device by inserting fulcrum shafts 5, 5 into the shaft wheel of the cast wheel from both sides. The deformed part is positioned downward and the fixing piece 25 of a clamping device 21 is pressed to the side face of the rim to clamp the wheel. Supporting pieces 13a, 13b on the opposite side to a pressing piece 8 on the side where the wheel is pressed to straighten the deformation are advanced and are pressed to the side face of the rim, and with said position as a base end, the wheel is pressed by the piece 8, by which the deformation is straightened.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a deformation correction device for a cast wheel for a motorcycle, which mainly uses a light alloy.

When a motorcycle receives an impact due to a collision, fall, etc., the cast wheels often make deformation noises as well. Conventionally,
Among these deformed cast wheels, extremely deformed ones cannot be used for safety reasons.
Most collisions occur from a diagonal direction to the wheel, and most wheels that are twisted, bent, or otherwise deformed as a result of this can be used once the deformation is corrected. there were. However, in the past, there was no device capable of correcting cast wheels that had been deformed, such as twisting, into a proper state, so these cast wheels were often abandoned.

The present invention was made in view of these circumstances, and
A cast wheel mounting device is provided on the base, and a suppressing piece that presses a wide side surface of the cast wheel;
The orthodontic device gold film has a supporting piece located between the pressing piece and the cast wheel mounting device and abutting the rim side surface on the opposite side of the pressing piece, and in a part other than the orthodontic device,
A clamp device that engages with the cast wheel is provided so that the cast wheel can be easily corrected to a proper state depending on the state of deformation such as twisting.

The present invention will be described in detail below based on illustrated embodiments. FIGS. 1 to 4 show an embodiment of the present invention, and reference numeral 1
is a base, which is made of a suitable steel plate or the like. The cast wheel mounting device 2 is shifted to the base 1, and its configuration is, for example, to establish a pair of frames 3 and 3 at appropriate intervals on the upper surface of the base 1, Combine in a gate shape. Bearing holes 4. are placed horizontally in both frames.
4 is drilled, and a supporting shaft 5.5 is inserted therein so that the compatible shafts meet at the center of the gate-shaped frame.
．． 5 is inserted into the shaft hole C" of the cast wheel C, and the cast wheel C is rotatably supported. The reference numeral 6.6 is a support shaft removal screw that is screwed into the male thread carved in the support shaft 5.5. It is a nut.In addition, cast wheel mounting device 2
As an example, the above configuration was used, but the cast wheel could be fixed to a predetermined position on the frame.
It does not necessarily need to be supported in the shaft hole, and may be arranged to support a hub or the like. Further supported cast wheel straightening device 7.7'jr7 frame 3.3
I give it a 9. The illustrated embodiment takes into account the convenience of straightening work, and as an example, below the cast wheel,
Although a pair of straightening devices 7.7 having the same configuration are mounted oppositely, it is sufficient that at least one of them is provided, and it is not limited to forming them below the cast wheel.

In its construction, first, a pressing piece 8.8 is provided corresponding to the rim side surface of the lower end of the cast wheel. This one is frame 3
．． A cylinder 10.10'i is attached to a substrate 9.9 whose position can be adjusted vertically along sliding grooves 3a, 3a formed in 3, and is attached to a rod of this cylinder lO%10. Pressing is performed using a pump, jack, etc., and in the illustrated embodiment, a manual hydraulic pump 12.12 is used as an example. On the other hand, between the pressing piece 8.8 and the cast wheel mounting device 2, a supporting piece 13.13 serving as a fulcrum is installed corresponding to the side surface of the rim opposite to the pressing piece 8.8. This device includes, for example, a pair of left and right support pieces 13a%13b'i, and is attached to a substrate 14, 14 established on the base 1 so that its position can be adjusted vertically and horizontally. That is, a horizontally long support piece mounting plate 15.15 is attached to the front surface of the board 14.14, and both ends of this plate are folded into the edge of the board 1'%14 in a U-shape so that it can slide up and down. At the same time, the clamp screw is 1♂, 1g, and 2 times can be freely adjusted. Furthermore, a pair of left and right moving pieces 16L and 16b are mounted on the support piece mounting plate 15.15.
is held in a horizontally long holding groove 17.17 so as to be slidable left and right, and can be clamped with a clamp screw 18.18. This moving piece 1k 16b has 1 female thread and 19 holes on the front.
b is carved, a rotary screw is screwed onto this, and support pieces 13a and 13b are attached to the tip of the rotary screw 20 and the rod 20b. This supports the support piece 13FL%13b'it
By rotating the rotating screw 20h 20b ft,
It can be set freely in the front and rear directions. Furthermore, this device is provided with a clamp device 21 (j) that engages with the cast wheel in a part other than the straightening device. It is installed in correspondence with the upper end of the wheel.That is, with respect to the sliding grooves 3 & 3a of the frame 3.3, a base plate 221 whose position can be freely adjusted up and down, female threads 23, 23 are formed horizontally in η, and a rotation line is connected to this. The rod is screwed together with 24-karat gold, and fixing pieces 25, 25'ii and 9 are attached to the tips of the rods, and these are used to clamp and clamp the rim from all sides of the rim. I have shown a device that clamps the upper end of the wheel, but the point is that even if a moment is applied to the upper part of the wheel during straightening, it would be a good idea to have a structure that can support it. There is no problem even if it is configured as follows.

In addition, the above-mentioned suppressing pieces 8, supporting pieces 13a, 13b, and fixing pieces are designed so that they can be easily secured to the rim side surface by forming a full step on the contact surface to match the step on the rim side surface, or by making them rotatable. Its configuration is currently being studied. The present invention has the configuration as described above, and operates as follows to correct a deformed cast wheel.

First, as a preparatory step for work, the cast wheel is inspected for all twists and the positions to be corrected are marked.
In this process, the cast wheel is supported by a horizontal shaft installed on the base in the gold shaft hole, and an indicator such as a dial gauge placed on the base is placed on the rim, and the cast wheel is rotated fully to measure the width of deflection. (See Figure 5). This corrects areas with large p deflection widths.
Note that this work can also be carried out with the cast wheel attached to the cast wheel attaching device 2 of this device. After marking the correction points, the entire cast wheel C is attached to the cast wheel mounting device 2 as shown in Fig. 5 (0), and the cast wheel C is placed in the middle of the frame 3.3. The support shaft 5.51 extended from both sides into the shaft hole C' of the wheel C is inserted into the shaft hole C'. As a result, since the cast wheel C is rotatably supported, it is positioned completely below the first correction point, and the clamp device 21 is used to fix the cast wheel C here, and the rotation line Rotate the rod 24 to bring it into contact with the side surface of the fixed piece 25 and 25, and clamp it. Next, as shown in FIG.
3 & 13b are advanced by fully rotating the rotary rod by 20 degrees, and brought into contact with the side surface of the rim. This support piece 1
38.13b serves as a fulcrum for the pressing piece 8 during correction, and the wheel is bent by the pressing action of the pressing piece 8 with its position as the base end. Therefore, for example, when a narrow area below the wheel is bent, the support pieces 13B and 13b are lowered and brought closer together, and on the other hand, when a wider area is bent, the support pieces 13B and 13b are raised and moved away from each other. Support piece 13k according to
The iab k position can be adjusted up and down and left and right. After such adjustment work, as shown in the same figure (c), operate the manual hydraulic pump 12 to supply all the pressure oil to the cylinder 10K, push out the pressing piece 8, and press the lower end of the rim. and make the necessary transformations. This amount of suppression can be adjusted manually in the case of a manual hydraulic pump. In this device, as shown in Fig. 5, after the straightening operation, the clamp of the clamp device 21 is loosened, and the indicator set on the base is used to inspect the deflection width on the side of the shim. Since the work can be repeated and fine adjustments can be made, correction work can be done easily and appropriately.
Furthermore, even if the wheel is bent in the opposite direction due to excessive pressure, it can be smoothly corrected using the correcting device of the same configuration on the opposite side. Since it is necessary to correct a wheel that mainly involves twisting metal from a plurality of different directions, the work efficiency and accuracy can be greatly improved if the staff is configured as in the above embodiment.

By the way, in the device of the present invention, by using a suppressor such as a hydraulic pump, it is possible to provide a device that corrects slight irregularities on the rim surface caused by a light collision. 6th
~ Figure 7 shows an example of this, in which the inner circumferential surface abutting device and the outer circumferential surface abutting piece device of the rim are attached to the board I, and the outer circumferential surface abutting piece 29 is moved by a hydraulic pump. It is attached to the rod of the acting cylinder 30 and configured to be pushed out. When a concave portion is formed on the rim surface as shown in FIG. 7(a), the inner circumferential surface abutting piece 28ae! The unilateral circumferential surface abutting piece 29a is applied to the inwardly protruding part of the J.
A pair of abutting portions are placed on both sides of the concave portion at intervals, and the cylinder 30tl is extended and pressed. As a result, the recess is pushed out between the abutting portions on both sides by the inner abutting pieces 28a, and is eliminated. On the other hand, if a convex part occurs on the rim, see the same figure (b).
As shown in , the outer periphery contact piece 29b is applied to the convex portion, and the inner surface contact piece 28b on the opposite side is provided with a pair of contact portions at intervals on both sides of the entire outer periphery of the contact piece 29b, which is opposite to the above. The protrusion can be removed by manipulation.

It goes without saying that various types of these contact pieces are prepared as attachments and can be replaced as necessary. Further, the device of the present invention may be equipped with a press device that utilizes the degree of suppression to correct the bending of the front fork, handle, etc. that occurs during a collision. FIG. 8 shows, as an example, the case of correcting the front fork F'(r), in which a frame is assembled on the base 1 to form a press tool mounting base 31, and a cylinder 32 is actuated by a hydraulic pump, for example. It is mounted completely vertically, and on the other hand, a support stand 33 for the front fork F is provided on the base 1, and all bent positions are inspected in advance using a dial gauge, etc., and all cylinders 31 at that position are
Correction is performed by pressing with a suppressing member 34 attached to the rond.

As described above, according to the present invention, a cast wheel that has been deformed such as torsion due to a collision or the like can be corrected until its deflection width is reduced to several millimeters or less, so that it can be used again. Moreover, this device allows this operation to be performed easily. In addition, when the support piece is entirely adjustable in position vertically and horizontally as in this embodiment, the bending position can be adjusted in accordance with the state of deformation of the cast wheel, and appropriate correction can be performed.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional front view of the same, Fig. 3 is a longitudinal sectional side view of the same, and Fig. 4 is a sectional view showing an enlarged part of Fig. 3. , FIG. 5 is an explanatory view showing the operating process of this device, FIG. 6 is a perspective view showing the unevenness correction device,
Figure 7 is an explanatory diagram of the operating state of the same as above, and Figure 8 shows the curves of the front fork, handle, etc. It is a perspective view showing the press it which corrects ffi. 1; Base C; Cast wheel C'; Shaft hole 2
; Cast wheel number phrase device 7: Straightening device 8;
Pressing piece 13; Support piece 21; Clamping device @ Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 5 (c) (d) Fig. 6 Fig. 7 (a) Fig. 8

Claims (1)

[Claims] / A cast wheel mounting device is provided on the base, and a pressing piece that presses the rim side metal of the cast wheel, and a pressing piece located between the suppressing piece and the cast wheel mounting device, A motorcycle mainly made of light alloy, which is provided with a straightening device having a support piece that abuts the rim side surface on the opposite side, and in which parts other than the straightening device have a clamping device that engages with a cast wheel. Type 1 straightening device for cast wheels. A deformation correction device for a cast wheel for a motorcycle mainly made of a light alloy according to claim 1, wherein the supporting piece is vertically and horizontally adjustable.