JPH02232126A - Floating unit - Google Patents

Abstract

PURPOSE:To prevent the core dislocation of a floating plate and a reference plate by constructing the title device in such a way that the floating plate is rotated around its axis center when the reference plate is rotated so as to insert an assembling work into a work to be assembled. CONSTITUTION:This floating unit is formed of a reference plate 1 with a reference plane 101, a floating plate 2 movable relatively to the reference plate 1 in the parallel state to the reference plane 101, an intermediate plate 3 engaged with the plates 1 and 2, a first engaging part 14 provided between the intermediate plate 3 and the reference plate 1, and a second engaging part 16 provided between the intermediate plate 3 and the floating plate 2. Accordingly, the floating plate 2 is movable relatively to the reference plate 1 along the reference plate 101. Furthermore, when the reference plate 1 is rotated around the axis of the plate 1, the floating plate 2 can be rotated around the axis of the plate 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floating device used for assembling workpieces, etc.

[Prior Art] It is known that a conventional floating device is composed of a reference plate having a reference surface and a floating plate that is held parallel to the obstruction surface and movable relative to the reference surface. This floating plate moves relative to the reference plate along a reference plane, and the work to be assembled is assembled to the work to be assembled using a chuck or the like attached to the floating plate.

[Problems to be Solved by the Invention] However, in the case of the floating device as described above, although it is possible to move the floating plate relative to the assembly position of the workpiece to be assembled, it is possible to rotate the workpiece to be assembled. When you want to insert the floating plate into a workpiece, even if the floating plate is held by the reference plate, it does not have an engaging part related to the rotating direction of the reference plate, so if the reference plate is rotated, the floating plate will not be able to rotate. There was a drawback that the center misalignment occurred according to the axial center of the.

The present invention was devised in view of the above-mentioned drawbacks, and the floating plate is movable relative to the reference plate, and when the reference plate is rotated, the floating plate rotates according to the axis center of the floating plate, and the workpiece to be assembled is rotated. The technical problem is to provide a floating device that can be inserted into a workpiece while rotating it.

[Means for Solving the Problems] The floating device of the present invention includes a reference plate having a reference surface, a floating plate that is parallel to the reference surface and movable relative to the reference plate, and the reference plate and the floating plate. a first engaging portion provided between the intermediate plate and the reference plate and movable relative to the reference plane in one direction and immovable in the other direction intersecting the one direction; and a second engaging portion which is provided between the intermediate plate and the floating plate and is immovable relative to the reference plane in the one direction and capable of relative movement nJ in the other direction.

[Function] With the above configuration, the intermediate plate can perform the reference play i~
It becomes possible to move relative to the object in one direction. Further, the floating plate is movable relative to the intermediate plate in one direction and the other direction intersecting with the intermediate plate.

Therefore, the floating brake 1 becomes movable relative to the reference plate in two dimensions. On the other hand, both the first engaging part and the second engaging part cannot rotate relative to the rotational direction. Therefore, rotational motion is transmitted between the reference plate and the floating plate via the intermediate plate. Therefore, when the reference plate is rotated about the axis of the reference plate, the intermediate plate moves relative to the reference plate in one direction, and the floating plate moves relative to the intermediate plate in the other direction that intersects with the one direction. By doing so, the floating plate repeats relative movement in any direction with respect to the reference plate, and becomes rotatable according to the axial center of the floating plate. Therefore, when the reference plate is rotated along the axial center of the reference plate, the floating plate rotates along the axial center of the floating plate while moving relative to the reference plate.

[Example] As shown in FIGS. 1 and 2, the floating device of this example includes a reference plate 1 having a blocking surface 101, and a reference plate 1 that is parallel to the reference surface 101 and moves relative to the reference plate 1. An intermediate plate 3 that engages with the possible floating plate 2, %Q plate 1, and floating plate 2, respectively, a first engaging portion 14 provided between the intermediate plate 3 and the reference plate 1, the intermediate plate 3, and the floating plate. 2, and a second engaging portion 16 provided between the two.

The reference plate 1 is a ring-shaped disk having a circular hole 1a inside, and has two small circular holes 1b symmetrical about the axial center. First engaging portions 14 each consisting of a pin, which will be described later, are fitted and locked into these two small circular holes 1b. Furthermore, it has a small circular hole 1C that penetrates at a position different from the two small circular holes 1b.

The floating plate 2 has a shaft portion 20 in one direction around the shaft center.
1, and this shaft portion 201 has a first stepped portion 202.
and a second stepped portion 203.

Roughly speaking, the tip of the shaft portion 201 has a male screw portion 204 that screws into a nut 9, which will be described later. There are two small circular holes 2a roughly symmetrical about the axial center of the shaft portion 201. A second engaging portion 16 constituted by a pin, which will be described later, is inserted and fixed into this small circular hole 2a. It also has a hemispherical hole 2b at a position different from the small circular hole 2a.

The intermediate plate 3 is a ring-shaped disk having a circular hole 3a inside, and has four notches 3b extending in the radial direction divided into four equal parts at 90' intervals on the outer peripheral surface. Furthermore, a circular hole 3c is provided at a position different from the four notches 3b.

The first engaging portion 14 includes a cylindrical engaging portion 141 having a diameter that is approximately equal to the width of the notch 3b and is inserted into and engaged with the notch 3b. It consists of a threaded portion 142 provided. The pin roughly constituting the second engaging part 16 also has the same shape as the first engaging part 14 and has an engaging part 161 and a threaded part 162.

The method of attaching silk to the floating device of this example will be described below.

First, the threaded parts 162 of the second engaging part 16 are fitted into the two small circular holes 2a of the floating plate 2 so that the engaging parts 161 of the second engaging part 16 are on the shaft part 201 side. Tighten the nut 17 on the opposite side to fix it. After that, the intermediate plate 3 is loosely inserted into the first stepped part 202 of the floating plate 2, and the two notches 3b are spaced apart by 180°.
is engaged with the engaging portion 161 of the second engaging portion 16 . Thereafter, a disc-shaped ring 5 having a circular hole 5a to be inserted into the second stepped portion 203 of the floating plate 2 is inserted into the floating plate 2 so as to be aligned with the side surface of the first stepped portion 202. This ring 5 has several small circular holes 5b at equal intervals in the circumferential direction. Balls 4 having a diameter slightly larger than the thickness of the ring 5 are respectively inserted into the small circular holes 5b.

On the other hand, the first engaging portion 1 is inserted into the two small circular holes 1b of the reference plate 1.
The threaded portions 142 are fitted so that the respective engaging portions 141 of 4 are in the same direction, and fixed with nuts 15. This reference plate 1 is loosely inserted into the second stage groove portion 203 of the floating plate 2 so that the pin serving as the first engaging portion 14 and the pin serving as the second engaging portion 16 are spaced apart by 90°. At this time, the bottle engaging portions 141, which are the first engaging portions 14, are respectively engaged with two notches 3b spaced apart by 1800 mm. Thereafter, a ring 7 having the same shape as the ring 5 is inserted into the second stepped portion 203, and a ball 6 having the same shape as the ball 4 is inserted into the small circular hole 7b. Thereafter, a ring-shaped disk 8 having a circular hole 8a inside is inserted into the ball 6 so that its side surface comes into contact with the ball 6. Thereafter, the screw portion 204 of the shaft portion 201 of the floating plate 2 protruding from the circle rA8 is fixed with a truncated conical nut 9.

When this assembly is completed, the semispherical hole 2b of the floating plate 2, the circular hole 3C of the intermediate plate 3, and the circular hole 1C of the reference plate 1 are aligned.

Then, the ball 10 is inserted into the hemispherical hole 2b, and the pin 12 is fixed in the circular hole 1C of the reference plate 1 with the interposition of the spring 11 inserted into the circular hole 3C of the intermediate plate 3. Fix the pin 12 with a nut 13. The ball 10 with the spring 11 interposed therebetween allows the axial center of the reference plate 1 to coincide with the axial center of the floating plate 2 to determine the initial position. This completes the assembly of the floating device.

As shown in FIG. 3, the cylinder device 18 to which this floating device is attached consists of a cylinder device main suspension 181 and four pillars 182 hanging downward from the cylinder device main body 181.
and a holding plate 184 horizontally fixed to the branch 182 with nuts 183. The reference plate 1 of the floating device is then fixed to the holding plate 184 in an aligned position by bolts 185. At this time, a large circular hole 184a is provided in the holding plate 184 so that the shaft portion 201 of the floating plate 2, the disk 8, etc. do not interfere with each other. Also, the shaft portion 20 of the floating plate 2
A chuck 19 is attached to the surface opposite to the chuck 1 for gripping the workpiece A to be assembled with the axis aligned.

The operation of the floating device of this embodiment will not be described below.

In this example, (P) Attachment of workpiece B to be assembled and workpiece A to be assembled. The figure shows how to insert the 1st node B and the work A to be assembled.
are fitted by spline connection.

If the axial center of the reference plate 1 and the axial center of the hole in the workpiece B to be assembled are misaligned, the axial center of the workpiece A to be assembled and the axial center of the workpiece B to be assembled are misaligned, as shown in Figure 4. . At this time, the workpiece A to be assembled is subjected to a component force in the horizontal direction by the workpiece B to be assembled, as shown in FIG. At this time, the floating plate 2 which is integral with the assembly work 8 attempts to move relatively along the reference surface 101 of the reference plate 1 due to the transfer of the balls 4 and 6. Here, the first engaging portion 14 of the reference plate 1
The notch 3b of the intermediate plate 3 allows for free movement in one direction, and the engagement between the second engaging portion 16 of the floating plate 2 and the notch 3b of the intermediate plate 3 allows for movement in one direction and the other direction. This allows the floating plate 2 to move relative to the reference plate 1 in any direction. As the workpiece A to be assembled is inserted from the tapered surface by the cylinder device 18, the workpiece A to be assembled gradually coincides with the axial center of the hole of the workpiece B to be assembled.

During this assembly, the work A to be assembled and the work B to be assembled are spline-coupled, and therefore must be rotated. Therefore, the cylinder device 18 rotates the reference plate 1 around its axis. At this time, the axial center of the floating plate 2 is shifted from the axial center of the JlQj plate 1, but the pin, which is the first engaging part 14, is inserted into the notch 3b and the reference plate 1
The second engaging part 16 of the floating plate 2, the pin, engages with the notch 3b, so that it moves 90 degrees in the opposite direction to the first engaging part 14, which is the pin. Since the floating plate 2 is movable, it rotates around the axis of the floating plate 2 due to the force caused by the engagement between the workpiece A to be assembled and the workpiece B to be assembled.

This situation is shown in FIGS. 5 to 8. FIG. 5 shows a case where both the first engaging part 14 and the second engaging part 16 are moving relative to the intermediate plate 3, and the center of the reference plays 1 to 1 is
The center ■ of the intermediate plate 3 and the center ■ of the floating plate 2 are all located at different positions. Further, FIG. 6 shows a case where the first engaging portion 14 moves relative to the intermediate plate 3 and the second engaging portion 16 does not move relative to the intermediate plate 3. In this case, the center ■ of the floating plate 2 and the center ■ of the intermediate plate 3 coincide. FIG. 7 shows a case where the first engaging portion 14 is also moving relative to the intermediate plate 3, and the second engaging portion 16 is also moving relative to the intermediate plate 3. At this time, the center ■ of the reference plate 1 and the center ■ of the intermediate plate 3 are different, and furthermore, the center ■ of the intermediate plate 3 and the center ■ of the floating plate 2 are different. 8th
The figure shows a case where the first engaging part 14 and the intermediate plate 3 are not moving relative to each other, but the second engaging part 16 and the intermediate plate 3 are moving relatively. At this time, the centers (2) and (2) of the reference plate 1 and the intermediate plate 3 are the same, but the centers (2) and (2) of the intermediate plate 3 and the floating plate 2 are different.

When the reference plate 1 is rotated in this way, the axial center of the floating plate 2 can be moved to any position relative to the axial center of the reference plate 1, so that the floating plate 2 always rotates around the axial center of the floating plate 2. Can be done. Therefore, when the workpiece A to be assembled is fitted into the workpiece B to be assembled to some extent, it can be rotated along the axis of the workpiece A to be assembled, thereby facilitating assembly to the workpiece B to be assembled.

[Effects] The floating device of the present invention includes a reference plate having a reference surface, a floating plate that is parallel to the reference surface and movable relative to the reference plate, and an intermediate that engages with the reference plate and the floating plate, respectively. a first engaging portion provided between the intermediate plate and the reference plate and movable relative to the reference plane in one direction and immovable relative to the other direction intersecting the one direction; By having a second engaging portion provided between the floating plates, which is immovable relative to the one direction of the reference surface and movable relative to the other direction, the floating plate is fixed to the reference surface relative to the reference plate. and allows the floating plate to rotate about the axis of the floating plate when the reference plate rotates about the axis of the reference plate.

[Brief explanation of the drawing]

Figure 1 shows the floating example! It is a perspective view of A@, and FIG. 2 is an explanatory diagram showing assembly. FIG. 3A is a sectional view of a cylinder device equipped with a floating device according to an embodiment, FIG. 3B is a longitudinal sectional view of a workpiece to be assembled, and FIG. 3C
is a cross-sectional view of the assembled workpiece. FIG. 4 is a sectional view showing the state of the work to be assembled and the work to be assembled. Figures 5 to 8
The figure is an explanatory view showing the positional relationship between the intermediate plate, the first engaging part, and the second engaging part. 1... Reference plate 2... Floating plate 3... Intermediate plate 1. 14... First engaging part 16... Second engaging part

Claims (1)

[Claims] (1) A reference plate having a reference surface, a floating plate that is parallel to the reference surface and movable relative to the reference plate, an intermediate plate that engages with the reference plate and the floating plate, respectively, and the intermediate plate. and a first engaging portion provided between the reference plate and movable relative to the reference plane in one direction and not relatively movable in the other direction intersecting the one direction, and between the intermediate plate and the floating plate. A floating device comprising: a second engaging portion that is provided and is immovable relative to the one direction of the reference surface and movable relative to the other direction.