JPS5912895B2 - Wheel balance correction weight attachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for attaching a weight for correcting a misalignment of a shaft to the shaft.

Conventionally, in order to attach a weight for adjusting the thickness to the shaft body, first, the location of the adjustment and the weight of the adjustment are detected using a shear testing machine, and then the operator performs a test based on the detection results. A weight for adjusting the alignment having a predetermined weight was attached by driving it into the area of the shaft where the alignment was to be corrected.

However, such conventional shaft alignment correction weight mounting means relies on manual work by humans.
There is a problem of poor work efficiency.

The present invention aims to solve these problems5, and provides a shaft body that allows a weight for tension correction to be quickly and accurately attached to the tension correction location of the shaft body. The purpose of the present invention is to provide a weight mounting device for correcting tension.

For this reason, the shaft body alignment correction weight mounting device of the present invention is provided with a plurality of weight cartridges arranged radially with respect to the shaft body placed on the shaft body alignment correction table, and the above-mentioned weight cartridges are provided. An alignment mechanism is provided which can set the balance correction part of the shaft body to the required weight discharge end of the weight cartridge, and a weight is driven from the set 75 weight cartridge to balance the shaft body. It is characterized by the provision of a weight and a drive mechanism that can be attached to the repaired area.

Hereinafter, embodiments of the present invention will be explained with reference to the drawings.
Figures 1 to 4 show the first embodiment of the weight attachment device for correcting the weight of a ringless body. FIG. 3 is a perspective view showing the weight cartridge, and FIG. 4 is a block diagram showing the alignment mechanism.V) Shaft An automobile shaft body 2 is placed on a measuring stand 1 of a balance testing machine serving as a body balance correction stand.

As shown in FIG. 4, this measuring table 1 is connected to and supported by a rotating shaft 4 rotated by a main electric motor 3.
Furthermore, this rotating shaft 4 is rotatably supported by a cylindrical bearing 6 which is supported by an elastic bearing 5.

Further, a disc 7 with a dock Ia is coaxially fitted to the rotating shaft 4, and a resolver 8 as a 35-rotation position detector is attached to the lower part of the rotating shaft 4. 4 rotates, the resolver 8 outputs a signal, such as a sine wave, depending on the rotation angle.

Furthermore, as shown in FIGS. 1, 2, and 4, a ring-shaped rotating gear 9 is disposed so as to surround the wheel 2 placed on the measuring table 1, and this rotating gear 9 is provided with a driving gear. A small gear 10 is meshed with the small gear 10, and this small gear 10 is connected to a drive mechanism 11 including an electric motor and the like shown in FIG.

Further, on the plane part of the rotary gear 9, four weight cartridges 12, 121, 122, 123 are arranged at intervals in the circumferential direction and are movable up and down via hydraulic cylinders 13. As a result, these weight cartridges are disposed in a radial manner with respect to the wheel 2 placed on the measuring table 1, and are movable up and down.

Note that when the wheel 2 is placed on the measuring table 1, the weight discharge ends 12a, 121a, 122a, 12 of each weight cartridge
3a faces the edge of the wheel rim 2a of the wheel body 2.

By the way, as shown in FIG. 3, the weight cartridge 12 is provided with a body 12b having a cross-section [ ] shape.This body 12b has an unbalance correction weight of the same weight that is biased by a spring 12c. A large number of weights 14 are loaded.

In addition, the weight discharge end 12a of the weight cartridge 12 has a
A pair of elastic clamping members 12d that elastically clamp the weight 14.
and a pressing member 12e that holds the clamped weight 14 in its position so that it does not rotate. The weight 14 is held between the weight discharge end 12a so as not to rotate.

Note that the other weight cartridges 121, 122, and 123 have the same structure as the weight cartridge 12, but
The weights of the weights 14 loaded into the respective weight cartridges 12, 121, 122, 123 are different.

By the way, an alignment mechanism is provided which can set the alignment correction point of the wheel body 2 to the desired end of the weight cartridge.

That is, as shown in FIG. 4, a pair of vibration detection pick-ups 15, 15 are attached to the peripheral wall K of the cylindrical bearing 6, and signals from each pick-up 15 are input to an unbalance detection mechanism 16. It is becoming more and more like this. Also,
A disc 7 with a rotating shaft 4 is connected to this unbalance detection mechanism 16.
A synchronizing signal is also input from a synchronizing signal generating sensor 17 disposed so as to face the dock 7a attached to the peripheral wall of the dot 7a. Therefore, this unbalance detection mechanism 16 receives the synchronization signal from the sensor 17 and synchronizes, and detects the amount of unbalance and the arrangement position of the sensor 17 (hereinafter referred to as "
"Reference position".

), each angle up to the balance correction point can be detected and output from separate terminals.
A signal having unbalance amount information is transmitted to the control circuit 18 and indicators 19, 20, and a signal having angle information is transmitted to indicators 21, 22. Note that the indicator 19 indicates the amount of unbalance on the upper surface of the wheel body 2;
0 indicates the amount of misalignment on the bottom surface of the wheel body 2, the indicator 21 indicates the angle from the balance correction point on the top surface of the wheel body 2 to the above reference position, and the indicator 22 indicates the amount of misalignment on the bottom surface of the wheel body 2. This indicates the angle from the alignment correction point to the reference position. By the way, the indicators 21 and 22 are connected to a comparator 24 via a changeover switch 23, and this comparator 24 converts the angle signal coming from either one of the indicators 21 or 22 and the signal from the resolver 18. A brake signal can be output to the main electric motor 3 when both signals are compared and match. When this brake signal is issued, the main motor 3 is stopped and the balance correction point of the wheel body 2 is moved to the measuring table 1.
It is designed to stop at the position of index A provided near . Furthermore, the ring-shaped rotary gear 9 is fixed 4 in the outer circumferential direction.
Limit switches 25 and 28 are arranged, and each limit switch 25 to 28 is connected to a dock 9a with a gear 9.
It is configured to be in an on state when it hits the b1 dock 9a, and to be in an off state when it does not hit the b1 dock 9a.

Therefore, when the gear 9 rotates, the dock 9a also rotates, so that the limit switches 25 to 28 successively hit the dock 9a, thereby repeating the on-off state. Each of the limit switches 25 to 28 is connected to the drive mechanism 11 via a signal switch 29, and the drive mechanism 11 stops driving the small gear 10 and stops the rotating gear 9 when a signal is received from the limit switch. It's summery.

Furthermore, the unbalance amount signal from the control circuit 18 is input to the signal switch 29, and the limit switch 2 is switched depending on the type of signal from the control circuit 18.
Any one of the drive mechanisms 5 to 28 is connected to the drive mechanism 11.

That is, there are four types of signals from the control circuit 18, and each signal corresponds to the weight of the weight 14 in each weight cartridge, so the position of each weight cartridge can be determined depending on the type of signal. A limit switch for detecting the limit switch is selectively connected to the drive mechanism 11, and as a result, the weight cartridge corresponding to the selected limit switch is stopped at the position of the index A.

Therefore, as is clear from the above description that the balance correction part of the wheel body 2 stops at the index A position and the above description, a weight 14 having the weight to be attached to the balance correction part was loaded. The weight cartridge can be automatically set at this balance correction location.

By the way, as shown in FIGS. 1 and 2, a hydraulic cylinder 30 as a driving mechanism for the weight 1 is disposed above K of the wheel body 2, which is aligned with the index A. When the cartridge is set at the position of index A, the weight discharge end of the weight cartridge is directly below the hydraulic cylinder 30, so when this hydraulic cylinder 30 is operated, the weight 14 is removed from the set weight cartridge. 1 drive and attached to the balance correction location of the wheel body 2.

In this embodiment, in addition to the weight attachment mechanism on the top surface of the wheel body 2, a weight attachment mechanism on the bottom surface of the wheel body 2 having almost the same configuration is provided. A support member (not shown) may be provided to receive the force of the hydraulic cylinder 30 applied to the wheel body 2 on the back surface of the wheel body 2 .

Since the wheel balance correction weight attachment device of the present invention is configured as described above, in order to attach the required weight 14 to the balance correction location on the upper surface of the wheel body 2, first set the changeover switch 23 to the contact a side. , after raising the weight cartridge as shown by the chain line in Fig. 2,
It is placed on the measuring stand 1 of the AI tester, and the measuring stand 1 is rotated by operating the main motor 3.

When the measuring table 1 is rotated in this way, the balance correction point and the amount of unbalance of the wheel body 2 are detected by the unbalance detection mechanism 16.
is detected by the control circuit 18 based on the signal from there.
The comparator 24 is activated, and the balance correction portion of the wheel body 2 is stopped at the index A position, and a predetermined weight cartridge is stopped at the index A position.

As a result, a predetermined weight cartridge is set at the position of the balance correction point, and then the hydraulic cylinder 13 is actuated to lower the weight cartridge, and the hydraulic cylinder 30 is actuated to move the weight cartridge to the weight release end of the weight cartridge. The weight 14 held between the two is driven once to attach it to the balance adjustment location of the wheel body 2.

Furthermore, in order to attach the required weight 14 to the balance correction location on the lower surface of the wheel body 2, the same operation as described above can be performed after setting the changeover switch 23 to the b side.

As described above, the apparatus according to the first embodiment of the present invention has the advantage that the predetermined weight 14 can be quickly and accurately attached to the position of the wheel body 2 where the tension is to be corrected, and the work efficiency is greatly improved.

Figures 5 and 6 show a weight attachment device for correcting ring body misalignment as a second embodiment of the present invention. Figure 5 is a schematic plan view thereof, and Figure 6 explains its alignment mechanism. In FIGS. 5 and 6, the same reference numerals as in FIGS. 1 to 4 indicate substantially the same parts.

In this second embodiment, the weight cartridges 12, 121,
The mounting positions of 122 and 123 do not move, and only the measuring table 1 rotates, so that the balance correction point of the wheel 2 can be set below the weight discharge end of a predetermined weight cartridge. There is.

Therefore, a hydraulic cylinder 30' serving as a driving mechanism for the weight 1 is disposed above each weight discharge end. Here, to explain the alignment mechanism, as shown in FIG.
73 are provided, and each sensor is connected to the unbalance detection mechanism 16 via the signal switch 31. Also,
A mismatch amount signal from the control circuit 18 is input to the signal switch 31.
Depending on the type of signal from the sensor 17, 171, 17
2,173 can supply a signal to the unbalance detection mechanism 16.

Therefore, as shown in FIG. 6, when the first switch 31a of the signal changer 31 is closed, the synchronizing signal from the sensor 17 is supplied to the unbalance detection mechanism 16, thereby causing the sensor 17 to The reference angle is the indicator 21,
22.

Next, for example, when the second switch 31b of the signal switch 31 is closed in response to a signal from the control circuit 18, the sensor 17
1 is supplied to the discrepancy detection mechanism 16, and as a result, the angle with respect to the sensor 171, that is, the sensor 1
An angle obtained by subtracting the angle formed by the sensors 17 and 171 from the angle 7 is displayed on the indicators 21 and 22. Below, the third and fourth switches 31c and 31d of the signal switch 31
is closed, the synchronizing signals from the sensors 172 and 173 are supplied to the unbalance detection mechanism 16, and the sensor 172
, 173 as reference points are the indicators 21 and 22, respectively.
It is now displayed in Each of the switches 31a to 31d of the signal switching device 31 is configured such that when one of the switches 31a to 31d is turned on, all the others are turned off. The sensor 17 detects the reference position for pointing to the index A in this way,
171, 172, and 173 are arranged at a predetermined interval from each other, the reference position, that is, the position of the index A shifts depending on which sensor the misalignment detection mechanism 16 receives the synchronization signal from. .

Since the shift amount of this index A has a one-to-one relationship with the arrangement state of each weight cartridge, when the index A shifts, a predetermined weight cartridge will always exist above it. That is, in the case of the second embodiment, since the index A is shifted and set below the predetermined weight cartridge, the balance adjustment section of the wheel 2 is also set below the predetermined weight cartridge. It is something that

Here, the mechanism for stopping the balance correction point of the wheel body 2 at the position of the index A determined by the reference position detected by each sensor is the comparator 2 as in the case of the first embodiment described above.
Since a mechanism is used in which the main motor 3 is stopped by a brake command signal from the main motor 4, a detailed explanation will be omitted. After setting the balance correction point of the wheel 2 to the weight discharge end of the required weight cartridge in this way, the hydraulic cylinder 30' above the required weight cartridge is moved.
is operated to attach the weight 14 having a predetermined weight to the balance correction location of the wheel body 2. At that time, if necessary, a support member 32 may be provided to receive the force of the hydraulic cylinder 3σ applied to the wheel body 2 on the back surface of the wheel body 2.

Note that this second embodiment also has a weight attachment mechanism on the upper surface of the wheel body 2 having almost the same structure as the first embodiment described above. Almost the same effects or advantages as the device can be obtained.

Further, instead of using the hydraulic cylinders 30 and 3σ as the weight drive mechanism as in the aforementioned embodiments, an appropriate fluid pressure cylinder such as a pneumatic cylinder may be used.

Furthermore, the weight cartridges 12, 121, 122, 12
Instead of using the hydraulic cylinder 13 as the elevating mechanism of Fig. 3, a combination of a rack and a pinion may be used.

As the wheel balance correction table, the measuring table 1 of the balance tester is used, or a special correction station may be used.

In addition, as in each of the above-mentioned embodiments, in addition to arranging the weight cartridges in a radial pattern of four VCs around the wheel balance correction table, five or more weight cartridges are arranged around the wheel balance correction table. They may be arranged radially around the area.

In this case, each weight cartridge and the balance correction portion of the wheel body 2 can be aligned using an alignment mechanism substantially similar to the alignment mechanism in each of the embodiments described above. As detailed above,
The wheel body balance correction weight mounting device of the present invention includes a plurality of weight cartridges arranged radially with respect to the wheel body placed on the wheel body balance correction table, and the weight cartridges are arranged radially with respect to the wheel body placed on the wheel body balance correction table. A weight that is provided with an alignment mechanism that can be set to the weight release end of the required weight cartridge, and that can drive the weight from the set weight cartridge and attach it to the alignment correction location of the wheel body. Since one drive mechanism is provided, the balance correction weight can be quickly and accurately attached to the balance correction location of the wheel body, and work efficiency can be greatly improved.

[Brief explanation of the drawing]

1 to 4 show a weight mounting device for correcting the balance of a wheel as a first embodiment of the present invention. FIG. 1 is a schematic plan view thereof, and FIG. FIG. 3 is a perspective view showing the weight cartridge, FIG. 4 is a block diagram to explain the alignment mechanism, and FIGS. 5 is a schematic plan view thereof, and FIG. 6 is a block diagram for explaining its alignment mechanism. 1... Measuring stand of a balance testing machine as a wheel balance correction table, 2... Wheel body, 2a... Wheel rim, 3
... Main motor, 4... Rotating shaft, 5... Elastic bearing,
6...Cylindrical bearing, 7゛...Disc, 7a...Dock,
8... Resolver 9... Rotating gear, 9a... Dock, 10... Small gear, 11... Drive mechanism, 12...
... Weight cartridge, 12a ... Weight release end, 12
b... Weight cartridge body, 12 c... Spring, 12
d... Elastic clamping member, 12c... Pressing member, 13...
- Hydraulic cylinder, 14... Weight, 15... Pick-up, 16... Misalignment detection mechanism, 17... Synchronous signal generation sensor, 18... Control circuit, 19-22.
... Indicator, 23... Selector switch, 24... Comparator, 25-28... Limit switch, 29... Signal switch, 30, 30'... Hydraulic pressure as the weight 1 drive mechanism Cylinder, 31... Signal switch, 31a to 31d
... switch, 32 ... support member, 121, 122
, 123... Weight cartridge, 121a, 122a
, 123a... Weight release end, 171, 172, 173
...Sensor for generating a synchronization signal, A...Indicator.

Claims (1)

[Scope of Claims] 1. A plurality of weight cartridges are provided radially with respect to a wheel placed on a wheel balance correction table, and the balance correction portion of the wheel is adjusted to a required weight of the weight cartridge. It is characterized by being provided with an alignment mechanism that can be set to the weight discharge end, and a weight drive mechanism that can drive the weight from the set weight cartridge and attach it to the balance correction location of the wheel body. do. Weight attachment device for wheel balance correction.