JPH0445786Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a hanging device for suspending a tool body such as a multi-axis nut runner body, and more specifically, a hanging device for suspending a tool body such as a multi-axis nut runner body, and more specifically, a hanging device for suspending a workpiece to which a large number of tightening bolts etc. are attached. This invention relates to a hanging device that allows work to be carried out by following the posture even if there is an inclination.

[Conventional technology]

Conventionally, in this type of multi-axis nut runner, it is necessary to align the phases of the numerous bolts and sockets attached to the workpiece, so it is generally done to suspend the workpiece using a hanging device that matches the posture of the workpiece. If this posture changes due to the deflection or inclination of the workpiece, the tightening may become defective. To prevent this defective tightening, adjust the deflection or inclination toward the workpiece using mechanical means such as a work guide or work stopper. It was necessary to provide a mechanism for this purpose.

For this reason, for example, as Utility Model Application No. 58-44171,
The socket is equipped with a translational motion generation mechanism for translating the nut and a rotational motion generation mechanism for controlling the attitude of the nut, and the rotational motion generation mechanism includes a hemispherical plate movably provided inside a dish-shaped disc, and an intermediate disk having a concave curved surface corresponding to the spherical surface of the hemisphere and provided on the upper part of the hemisphere via a ball bearing and a transmission pin, and the translational motion generating mechanism is attached to the dish-shaped disk. A nut tightening device consisting of an inverted cup-shaped disc fixedly fixed to the intermediate disc, covering the upper member and side portion thereof, and provided to the intermediate disc via a ball bearing and a transmission pin, was also developed in 1983. −
As No. 93469, the screw fixing head part is loosely inserted into the support block that is raised and lowered in conjunction with the raising and lowering operation so as to be able to swing in the circumferential direction, and the support block is inserted in order to regulate the amount of swing. Adjustment blocks are arranged side by side with a slight gap on both sides thereof, and the head portion is supported by a screw which is held by a plurality of pairs of spring pieces which are attached to the support block by climbing over both adjustment blocks. The screw alignment device in the stopper is further disclosed in Japanese Utility Model Application Publication No. 58-102024, and includes a tool body rotatably connected to a hanging tool via a shaft, and one end rotatably connected to the lifting tool, while the other end is rotatably connected to the hanging tool. and a fluid cylinder connected to the edge of the tool body, and a tool with a tilting mechanism that allows the suspension body to be tilted freely by the operation of the fluid cylinder, and also disclosed in Utility Model Application No. 55-60969.
In addition to providing a cam follower in the tightening socket that is swingably connected to the unit body that is movable with respect to the object to be tightened, the unit body can move in the direction of movement without moving relative to the object to be tightened. Various socket release devices for automatic tightening units have been proposed, each of which is characterized by a fixed cam that guides a cam follower.

[Problem that the invention attempts to solve]

However, all of the above conventional devices are capable of rotational movement in only one direction.
It lacks responsiveness when it is necessary to rotate the workpiece in two directions, horizontal and vertical, such as when the workpiece shakes and tilts at the same time, and may not be able to adequately follow variations in the workpiece posture. It is considered impossible.

[Means for solving problems]

In view of the above-mentioned conventional problems, the present invention allows the machine to flexibly respond to variations in position settings for individual workpieces, thereby improving the mechanical mechanism for stoppers and positioning of workpieces. The purpose of this is to provide a device that is not necessary and can sufficiently follow vibrations and tilts that occur at the same time. A pair of shafts supported in a cantilever manner, a hanging plate supported by the tip of the shaft by inserting the tip of the shaft through the insertion hole with point contact at both upper and lower ends, and the upper end of the shaft is rotatably attached to the hanging plate. a plurality of lifting cylinders, a bottom plate connected to the lower ends of the lifting cylinders, and a tool body such as a nut runner body having an upper end rotatably supported on the hanging plate and a lower end protruding from the bottom plate; A hanging device is characterized by comprising:

(Function) Therefore, when the workpiece shakes, that is, horizontal rotation occurs, the tool body is moved horizontally, and when the workpiece is tilted, that is, vertically rotated, the tool body is moved vertically. By rotating the workpiece, it is possible to reliably follow all variations in the workpiece.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in the drawings. In the drawing, reference numeral 1 denotes a fixed hanging device, and swinging shafts 2, 2 are respectively disposed on both sides of the hanging tool. 2 is supported by slide bearings 3, 3 so as to be movable back and forth, and a hanging plate 4 is connected to its tip.

The connection between the swinging shaft 2 and the hanging plate 4 is as follows:
As shown in FIGS. 4 and 5, when both sides of the tip of the swinging shaft 2 are cut out, the hanging plate 4 is cut out.
A horizontally expanding elliptical hole 5a is drilled in the deflection guide 5 fixed to the shaft, and the tip of the deflection shaft 2 is inserted into the hole 5a so that the two are brought into point contact at the upper and lower ends. By doing so, it is configured such that the swinging shaft 2 and the hanging plate 4 can be supported even if they do not intersect at right angles, and a stopper bolt 6 is inserted into the swinging guide 5 and the swinging shaft 2.

By adjusting the protruding lengths l ₁ and l ₂ of the swinging shafts 2, 2 from the tip of the hanging tool 1, respectively, the hanging plate 4 can be moved horizontally as shown in FIG. By rotating the tool body 8 described below in the horizontal direction along with this rotation,
Even if there are variations in the workpiece W due to runout,
The tool body 8 is made to follow this variation.

Lifting cylinders 7 are provided at both ends of the hanging plate 4,
7 is rotatably supported, and the lower ends of the lifting cylinders 7, 7 are connected to the bottom plate 9 of a tool body 8 such as a nut runner body. ,10
The upper end of is rotatably connected to the hanging plate 4. That is, as shown in FIG. 6, a rotating body 11 is fixed to the upper end of each guide rod 10, and a rotating bearing is installed between the boss portion of this rotating body 11 and a bearing case 12 attached to the hanging plate 4. 13
is attached to connect the two, and a bearing stopper 14 prevents the rotation bearing 13 from coming off.

Further, the lower end of each guide rod 10 is made to protrude below the bottom plate 9, and is supported by a bush 15 fixed to the bottom plate 9, so that the rotation of the guide rod 10 is not inhibited. Note that 16 in the figure is a socket that projects downward from the tool body 8.

By adjusting the operating amount of the lifting cylinders 7, 7, that is, the protruding lengths _l3 and _l4 of the piston rod, the tool body 8 is rotated in the vertical direction as shown in FIG. Even if variations occur in the workpiece W due to inclination due to rotation, the tool body 8 is made to follow these variations.

That is, when the workpiece shakes, that is, rotates in the horizontal direction, the swinging shafts 2, 2 are adjusted to rotate the hanging plate 4 in the horizontal direction, thereby tilting the tool body horizontally toward the workpiece, i.e. When rotation occurs in the vertical direction, the tool body is rotated vertically independently by adjusting the lifting cylinders 7, 7, thereby ensuring that all variations in the workpiece are followed and the socket 16 is rotated. , 16 of the bolts B, B of the work W
Tightening is performed.

[Effect of idea]

As described above, the hanging device according to the present invention includes a pair of shafts that are horizontally mounted and cantilevered so as to be movable back and forth, and the tips of the shafts are inserted through the insertion hole by point contact at both the upper and lower ends. a hanging plate supported at the tip of the shaft; a plurality of lifting cylinders whose upper ends are rotatably attached to the hanging plates;
Since it is composed of a bottom plate connected to the lower end of the lifting cylinder, and a tool body such as a nut runner body whose upper end is rotatably supported by the hanging plate and whose lower end is attached so as to protrude from the bottom plate, each Even if the position settings for the workpiece vary, by flexibly responding to this variation on the equipment side, there is no need for a stopper or mechanical mechanism for positioning the workpiece, and moreover, it is possible to prevent runout and tilt at the same time. It is possible to sufficiently follow the occurrence of such occurrences.

Therefore, it is possible to finely adjust the attitude of the tool body without restricting the attitude of the workpiece, and there are various effects such as eliminating the need for modifying the transport form of the workpiece.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 shows a rear view, Fig. 2 shows a side view, Fig. 3 shows a plan view, and Figs. 4 and 5 show a state in which the swinging shaft and the hanging plate are connected. Figure 4 is a partially cutaway side view, Figure 5 is an enlarged view showing
The figure is a sectional view taken along the line -- in FIG. 4, and FIG. 6 is an enlarged vertical sectional side view showing a state in which the suspension plate and the guide rod are connected. 1... Hanging equipment, 2... Shaking shaft, 3...
Slide bearing, 4... Hanging plate, 7... Lifting cylinder, 8... Tool body (nut runner body), 9... Bottom plate, 10... Kairod, 13
...Rotating bearing.

Claims (1)

[Scope of utility model registration request] A pair of shafts mounted horizontally and cantilevered so as to be movable back and forth, a hanging plate in which the tips of the shafts are inserted through the insertion holes with point contact at both upper and lower ends and supported on the tips of the shafts, and the hanging plates. a plurality of lifting cylinders whose upper ends are rotatably attached to a plate; a bottom plate connected to the lower ends of the lifting cylinders;
A hanging device comprising a tool body such as a nut runner body whose upper end is rotatably supported by the hanging plate and whose lower end is attached so as to protrude from the bottom plate.