JPS585154B2 - centering tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tool for centering a shaft insertion portion when overhauling an automobile clutch.

Regarding clutch overhaul, after removing the transmission and propeller shaft from the clutch section, remove the clutch disc and clutch cover from the flyhole.

Then, a new clutch disc and clutch cover will be installed, but at this time it is necessary to center the clutch disc and pilot bearing accurately (the two must match).

). Otherwise, the transmission device (specifically, the insertion of the main drive shaft directly connected to the transmission) will not be able to operate smoothly.

In order to center the car, dealers are equipped with an input shaft and 5ST (special service tool).

In the case of a dealer, the types of cars they handle are fixed, so it is easy to equip them with tools that match the models.

However, in the case of general maintenance shops, etc., the types of vehicles they handle are not fixed, and the inner diameter of the clutch disc pline portion also varies depending on the type of vehicle.

Therefore, it is necessary to prepare separate tools for each car model, but this is extremely difficult and uneconomical, and in reality, more than 10 types of tools are needed for the centers of the pilot bearing part and clutch disc spline part. I put them together and center them, and if I can't find anything that matches, I wrap them in tape, etc.

However, this is an inefficient and labor-intensive task.

Other general machines may also have similar drawbacks when centering the shaft insertion portion.

Therefore, the object of the invention is to eliminate the drawbacks and inconveniences caused by these conventional methods and to provide a centering tool that can reliably and quickly center any car or model with simple operation. It is something.

In the invention, a shaft is slidably inserted into a cylindrical body, a tapered pilot bearing center is fixed at the tip of the shaft, and an adjustment plate with several notches on the periphery is installed close to the pilot bearing center. In addition, an adjustment plate similar to the above is fixed and opposed to the front end of the cylindrical body, and a plurality of rollers with tapered sides on both sides are arranged between the two adjustment plates, and the rollers are constantly pressed into the notch of the adjustment plate by a spring or the like. The centering tool is characterized in that the cylindrical body and the shaft are movable in the probe direction by gripping and pressurizing an adjustment bundle connected to them, and the drawings show an example of the centering tool. It shows.

In the figure, 1 is a cylinder, into which a long shaft 2 is slidably inserted.

3 is a tapered pilot bearing center fixed at the tip of the shaft 2, and is used to center the pilot bearing.

Normally, the pilot bearing center 3 is fixed by threading the tip of the shaft 2 and screwing it into the thread.

Reference numeral 4 designates an adjustment plate, which is fixed at a position near the pilot bearing center 3 at the tip of the shaft 2.

Notches 5 are provided at several locations on the periphery of the adjustment plate 4.

The illustrated one has fan-shaped cutouts 5 at four locations.

Reference numeral 6 denotes an adjustment plate having the same shape as the adjustment plate 4, and the cylindrical body 1 is placed so as to face the adjustment plate 4.
It settles on the front end of.

7 is a notch in the adjustment plate 6.

Reference numeral 8 denotes a roller having tapered sides and a small diameter portion in the center for hanging and rotating a spring 9, and is prepared in a number corresponding to the notches 5 and 7.

The rollers 8 are arranged such that their opposite ends come into contact with opposing notches 5.7 of the adjustment plates 4 and 6, respectively, when the adjustment bundle is opened (when the adjustment plates 4 and 6 are farthest apart), which will be described later. (The state shown by the solid line in the figure).

The spring 9 is for constantly pressing each roller 8 in the shaft direction, and its action means that any part of the tapered portion of the roller 8 is always in contact with the notches 5 and 7.

The spring 9 is usually a leaf spring, but any material such as a rubber band that has the same effect as the spring 9 can be used in place of the spring 9.

10 is the adjustment bundle, and the gripping rod 10a in front of it
is connected to the cylindrical body 1 via an auxiliary arm 11, and the rear gripping rod 10b is connected to the shaft 2f via an auxiliary arm 12.

The gripping rod 10a and the gripping rod 10b are connected by a connecting piece 13, and a return spring 14 is interposed between the auxiliary arms 11 and 12.

The gripping rod 10a, the auxiliary arm 11, and the connecting piece 13, and the gripping rod 10b, the auxiliary arm 12, and the connecting piece 13 are respectively pivotally connected.

Reference numeral 15 designates a locking arm which is pivotally attached to an auxiliary piece 16f which is protruded from the rear end of the shaft 2, and has sawtooth notches 17 formed on its lower side.

Reference numeral 18 denotes a claw provided on the rear end edge of the cylindrical body 1, which engages with the notch 17 to lock the cylindrical body 1.

A spring 19 is attached to the pivot portion of the lock arm 15 to prevent the lock pin 15 from becoming unlocked when the tool is used horizontally or upside down.

Next, to explain the present invention in detail, when overhauling a clutch, the clutch cover and clutch disc are removed from the flywheel, and a new clutch disc and clutch cover are temporarily fastened to the flywheel.

Here, centering is performed using the tool according to the present invention. First, insert the tip of this tool through the spline part of the clutch disc with the adjustment bundle 10 open, and then insert the pilot bearing center 3 into the pilot bearing. Insert this.

When the adjustment bundle 10 is strongly gripped, the auxiliary pieces 11 and 12 open against the return spring 14, and the cylinder 1 moves forward and the shaft 2 moves backward.

Accordingly, the adjustment plate 6 moves forward and the adjustment plate 4 moves backward, and the two move closer together.

As the adjustment plates 4 and 6 move and approach each other as described above, the contact position of the roller 8 with respect to the notches 5 and 7 shifts from the outer small diameter portion to the inner large diameter portion.

Therefore, the closer the adjustment plates 4 and 6 are, the more each roller 8 will expand in the radial direction (as shown by the dashed line in the figure).

Then, each roller 8 eventually comes into contact with the spline portion of the clutch disc.

Until this state is reached, the claw 18 does not engage with the notch 17, but its slope portion contacts the slope portion of the notch 17, pushes up the lock arm 15, and moves forward to the notch 1γ one after another.

When the roller 8 is inscribed in the spline part of the clutch disc, when the grip pressure on the adjustment bundle 10 is removed, the return spring 14 causes the auxiliary arm 1L to
12 is pulled, the vertical part of the claw 18 and the vertical part of the notch 11 come into close contact, and the claw 18 is locked and the movement of the adjustment plates 4 and 6 is stopped.

In this state, you can center it and fully tighten the clutch disc and clutch cover.

Then, when the lock arm 15 is lifted to release the lock, the auxiliary arms 11 and 1 are moved by the return spring 14.
2 is pulled, and the adjustment plate 46 is separated by the opposite movement to that described above, and the roller 8 is also separated from the clutch disc spline portion, and is tightened in the shaft direction by the spring 9 and returned to its original position.

So I pulled out this tool and assembled the transmission.

Although the present invention has been described above for use in overhauling automobile clutches, the scope of use of the present tool is not limited to that case, and is applicable to various other applications that require centering as described above. Of course, it can also be used in the case of

Since the present invention is as described above, it is easy to operate, reliable,
It is possible to quickly center the clutch disc, etc., and it has the effect that it can be used in any type of car or model.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view thereof, and FIG. 2 is a diagram showing the engagement relationship between an adjustment plate and a roller. 1... Cylindrical body, 2... Shaft, 3... Pilot bearing center, 4... Adjustment plate, 5
... Notch, 6... Adjustment plate, 7...
Notch, 8...Roller, 9...Spring, 10
...Adjust bundle, 11.12...Auxiliary arm, 13...Connecting piece, 14...Return spring, 15...Lock arm, 16...Auxiliary piece, 17.
...notch, 18...claw, 19...spring.

Claims (1)

[Claims] 1. A shaft is slidably inserted into the cylindrical body, a tapered pilot bearing center is fixed at the tip of the shaft, and an adjustment plate with several notches on the periphery is installed close to the pilot bearing center, and Adjustment plates similar to those described above are fixed and opposed to each other at the front end of the cylindrical body, and a plurality of rollers with tapered sides on both sides are disposed between the two adjustment plates, and the rollers are constantly pressed against the notch of the adjustment plate by a spring or the like. A centering tool characterized in that the cylindrical body and the shaft are configured to be movable in opposite directions by gripping and applying pressure to an adjustment bundle connected thereto.