JPS5993243A - Assembly device - Google Patents

Abstract

PURPOSE:To enable a rotary part to be assembled by unmanned operation, by aligning a rolling bearing nut groove to be tightened in the position of a tooth of a rolling bearing washer and automatically detecting said position so as to fold the tooth of the washer, in the case of locking work of looseness for the rotary part or the like. CONSTITUTION:After a rolling bearing is press fitted to a shaft 6 of the assembly device, arranging a groove inserting the tongue part of a bearing washer in the fixed direction and inserting a washer 2 further screwing a nut 1 about a turn to be mounted, by a robot or the like positioning is performed immediately below a tightening device 14 by a self-propelled running bed 8. Next, the nut is chucked by a chuck 15, rotated and stopped at a point of time completing its tightening by detecting a detecting hole, provided in an indexing disc 18 and numbering a quantity multiplying a number of the grooves in the nut 1 and a number of teeth in the washer 2, through a photoelectric switch 21, thus the groove is aligned to a folding position of the tooth of the washer 2. And next, the rolling bearing is positioned below a folding device 27 by releasing the chuck 15, and a folding pawl 30 is positioned in a folding position by a detecting disc 34 and a photoelectric switch 35, thus performing folding. In such way, lcoking work of looseness of a rotary part or the like can be automatically performed.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an assembly device, and is particularly suitable for automatic assembly of rotating parts using a rolling bearing nut and a rolling bearing washer. Regarding assembly equipment.

[Prior art]

Conventionally, as shown in Fig. 1, tightening of a rolling pin bearing nut 1 used for rotating parts, etc. is carried out by attaching teeth 3 of a rolling bearing washer 2 to the grooves of the rolling bearing nut. 4 are aligned and tightened using a hand tool (not shown). In addition, for general tightening equipment, the specified tightening torque cannot be reached.
Although it can be tightened automatically, it is not possible to tighten the teeth 3 of the υ bearing washer 2 together, so there is a drawback that assembly cannot be automated.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an assembly device that can automate the loosening work of rotating parts using a nut for a 9-roll bearing and a washer for a 9-roll bearing.

[Summary of the invention]

The main point of the present invention is to automate the loosening work of rotating parts using a rolling bearing nut and a rolling p bearing washer. Insert the roller bearing washer into the shaft to be tightened, keeping the groove in the same direction, insert the locking groove provided in the roller bearing nut, and use the chuck of the device to tighten. This tightening should match the chuck position of the device, and when the tightening is completed, the number of grooves on the roller bearing nut multiplied by the number of teeth on the roller bearing washer should be the combined number. In order to stop at equally divided positions on the circumference, the position of the groove on the bearing nut, the position of the tooth of the bearing washer, the position of the tooth of the bearing washer, and the tooth position of the bearing washer. This method focuses on the fact that the bending positions match.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 to 5 for the case where the rotating parts shown in FIG. 1 are automatically assembled.

Fig. 2 shows the entire assembly device, Fig. 3 shows the tightening device, and Fig. 4 shows the bending device for locking nuts for rolling bearings. Moreover, FIG. 5 is a diagram for explaining the index detection of the tightening position and the bending position.

After the shaft bearing 5 is press-fitted into the shaft 6 shown in FIG. 1, the keyway (not shown) of the shaft 6 is used to attach it to the stand 9 of the self-propelled traveling platform 8 shown in FIG. 2 by a robot or the like. The direction of the groove into which the tongue 7 of the bearing washer is inserted (keeping the direction of rotation constant) Insert the washer 2 into the shaft 6, and then attach the roller bearing to the robot, etc., to the shaft 6.
Screw it in about one turn to install it (tightening chuck 1!1
It is also possible to supply and hold it with a 14-point robot, etc.). After this, the shaft 6 is moved to the second self-propelled carriage 8 on the running rail lo.
The tightening shown in the figure is done by positioning the device 14 directly below the frame 11.
The nut 14 is mounted on a rail 12 fixed perpendicularly to the rail 12 so that it can be raised and lowered by a cylinder 13.The tightening is performed by lowering the nut 1 to the height of the bearing nut 1 by rolling it with the cylinder 14t-cylinder 13, and tightening it by rolling it with the chuck 15 of the device 14. Chuck the shaft bearing nut 1. Thereafter, the drive motor 16 rotates the chuck 15'fr and tightens it. At this time, the tightening device 14 balances its own weight with the air cylinder 17 and is allowed to descend freely. In addition, a chuck force is applied so that the jaws of the chuck 15 roll into the grooves 4 of the bearing nut 1 during the tightening process. The tightening operation is stopped using a pressure switch (not shown) when a constant torque is reached. after this,
The drive motor 16 is controlled by a pressure control valve (not shown) or the like.
1 provided on the bearing washer 2 (switch to high pressure, roll)
The chuck 15 is rotated to a position where one of the seven teeth 3 and one of the four grooves 4 provided in the nut 1 for the roller bearing are closest to each other. This retightening process will be explained in detail with reference to FIGS. 3 and 4.

The chucks 15 shown in FIG. 3 are provided at four locations at right angles, and an index disk 18 is attached so as to rotate in the same manner as the shaft 19. is the total number of grooves 4 provided in the rolling bearing nut 1 and the number of teeth 3 of the rolling bearing washer 2, i.e., 4X17=68 detection holes 2.
0, and the position of this detection hole 20 is set by the photoelectric switch 21.
The rotation of the drive motor 17 is stopped approximately at the center of the detection hole. This operation causes the chuck 15 at the tip of the drive motor 17 to be moved to any position in the chuck 15, that is, to the groove 4 of the nut 1 for the roller bearing and the tooth 3 of the washer 2 for the υ bearing.
This means that one of the positions is correct. Furthermore, in order to detect which of the above positions matches the groove 4 of the rolling bearing nut 1 and the teeth 3 of the rolling bearing washer 2, that is, the bending position where locking is performed, it is necessary to In the index disk 22 at the bending position that rotates the same as the rotating shaft 19 in FIG.
17 photoelectric switches 24 corresponding to the teeth 3 of the roller bearing washer 2 are equally divided and fixed on the outside thereof, and the position detected by the photoelectric switch 24 of the detection hole 23 is determined by the roller shaft. It is detected that the tooth 3 is at the bending position based on the tongue 7 of the bearing washer 2. For example, in FIG. 5, a position 26 where the detection hole 23 of the index disk 22 and the photoelectric switch 24 match is the bending position.

After the roller bearing washer 2 is inserted into the shaft 6 by the above-mentioned operation, the roller υ bearing nut 1 is tightened, and the tightening is completed by aligning the bent position to prevent loosening. Tightening releases the chuck 15 of the device 14, and tightening the cylinder 13 raises the device 14. Next, the self-propelled carriage 8 is positioned at the station of the bending device 27. The bending device 27 is mounted on a rail 28 with a cylinder 29 so as to be able to rise and fall freely, and includes a bending claw 3o, a cylinder 31 that pushes out the claw 3o, and a guide pin that holds the shaft 6 and is mounted in a cylindrical manner so that it can be pushed and pulled freely. 32, (Fig. 4) Bending claw 3
The drive motor 3 rotates o to adjust the bending position.
3. Consists of a detection disk 34 and a photoelectric switch 35 for detecting the bending position. The bending position is detected when the tightening is completed by the device 14. For example, the position 26 in FIG. Control device (not shown) in the second position
The 17 detection holes 36 provided in the indexing disk 34 of the bending device 27 are stored in is detected by the charging switch 35, and the tightening is first memorized by the device 14! (
The rotation of the drive motor 33 of the bending device 27 is stopped at the position (number) that matches the number. After this, bending device 2
7. Lower all cylinders and use a limit switch (not shown) etc. to raise the cylinder 29 of the bearing washer 2.
, and hold the shaft 6 with the guide pin 32 shown in Fig. 5.
The bending claw 3o is pushed out by the cylinder 31. like this,
The bending device 27 is raised by the cylinder 29 to perform the bending operation. In order to take out the assembled shaft 6 from the stand 9 for the next process using a robot or the like, the self-propelled carriage 8 is returned to its origin and a series of bending operations are carried out. Complete the work.

〔Effect of the invention〕

According to the present invention, the groove of the rolling bearing nut is aligned with the position of the teeth of the rolling bearing washer, and the nut is tightened, the position is automatically detected, the teeth of the rolling bearing washer are bent, and the rotating parts are rotated. It is possible to automate work to prevent loosening, such as work to prevent loosening, and unmanned assembly becomes possible.

[Brief explanation of drawings]

1 to 5 are views showing one embodiment of the present invention, in which FIG. 1(a) is a plan view of the object to be assembled, FIG. 2(b) is a sectional view of the object, and FIG. A perspective view of the assembly device, Figure 3 is a front view of the device for tightening the nut for the roller bearing, Figure 4 is a front view of the device for folding the teeth of the washer for the roller bearing, and Figure 5 is the bearing. The tightening of the nuts will be shown in the front view of the monthly indexing board. 1... Nut for rolling bearing, 2... Washer for rolling bearing, 6... Shaft, 14... Tightening. is the device, 16.33・
... Drive motor, 18, 22. 34 ... Index disk,
21゜24.35...Photoelectric switch, 20,23.3
6...th IM (a) σ (0)

Claims (1)

[Claims] 1. A tightening device that aligns the groove of the nut for the roller bearing with the bent position of the tooth of the washer for the roller P bearing, and In an assembly device comprising a bending device that bends the nut into the groove of the roller bearing nut to prevent the nut from loosening, and a traveling platform for moving the assembled product, the tightening is performed by the device. The bending device is provided with a detection and tightening mechanism for aligning the position of the tooth of the roller bearing washer with the groove of the roller bearing nut. The assembly device is characterized in that the tightening is provided with a detection mechanism for rotating and aligning the bending pawl with the bending position detected by the device.