JPH09193076A - Grip temporary gear assembly - Google Patents

Abstract

(57) An object of the present invention is to provide a gripping device capable of setting a pinion gear (temporary assembly) at a predetermined position of a planetary carrier by a one-step motion. A structural feature is that a turning center point 59 is offset toward a front side (close to the protruding pressing piece 33) from a gear center 58 by a constant distance δ. As a result, the tips of the gripping claws 32L and 32R indicated by the imaginary line move on the locus of the arrow (circumference about the point 59), so that the wall 56
-Return to the position indicated by the solid line through the narrow gap between the link plates 4 (or gears 2L, 2R). [Effect] Left and right gripping claws 32L, 3 when unclamping
There is no concern that the 2R hits the left and right walls 56, 56, which allows the temporary gear assembly 1 to be installed in a desired position on the carrier plate 54 in a desired posture in one motion in this embodiment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary gear assembly gripping device suitable for setting a temporary gear assembly at a predetermined position of a planetary carrier of a planetary gear mechanism.

[0002]

2. Description of the Related Art "Planetary gear assembling apparatus" disclosed in Japanese Patent Laid-Open No. 7-88734 is an apparatus capable of efficiently assembling a pinion gear to a planetary carrier body. In this device, the pinion gear (temporary assembly) sandwiched by the chuck claws 25 of the pushing means 4 is pushed into the carrier body H in FIG. 2 of the above publication, and then the cylinder 31 of the aligning means 7 is moved. Then, the pinion gear (temporary assembly) is slightly rotated counterclockwise in the drawing to align the center of the pinion gear with the receiving holes 44a, 44a on the carrier body H side. As is clear from FIG.
It is characterized in that the pinion gear (temporary assembly) is inserted from the direction in which the chuck claws 25 do not interfere with the wall of the carrier body. As a result, the pushing means 4 and the positioning means 7
Since individual means are required and the two-step motion is performed, there are problems that the operation becomes complicated and the operation time becomes long.

Pinion gear with one-step motion (temporary assembly)
Is preferably set at a desired position. For that purpose, for example, it is conceivable to employ the timber clamping device of Japanese Utility Model Laid-Open No. 56-154980 and the gripping device of Japanese Utility Model Laid-Open No. 59-90592. Is a so-called crab sandwich. Arranges the movable bodies 31 and 32 at the ends of the parallel links,
Since the movable bodies 31 and 32 can be moved opposite to each other on the same line, the work 5 can be reliably gripped.

[0004]

Since the crab is sandwiched, a space on the left and right is required for opening and closing, and if there is a wall of the carrier body in this space, it cannot be adopted because of interference. Specifically, after placing the pinion at a predetermined position, it is necessary to open the pair of claws to the left and right in order to unclamp, and there is a disadvantage that the claws opened at this time interfere with the wall of the carrier body. Since the movable bodies 31 and 32 greatly extend to the left and right, is not suitable for incorporating a pinion gear (temporary assembly).

Therefore, an object of the present invention is to provide a gripping device capable of setting a pinion gear (temporary assembly) at a predetermined position of a planetary carrier by a one-step motion.

[0006]

In order to solve the above-mentioned problems, the first aspect of the present invention is to provide a projecting type pressing piece which comes into contact with a concave portion at the front center of a temporary gear assembly in which a pair of gears are arranged on the left and right sides. It consists of a left gripping claw that presses the left gear against the left hypotenuse of the projecting pressing piece, a right gripping claw that presses the right gear against the right hypotenuse of the projecting pressing piece, and a claw turning mechanism that swivels the left and right gripping claws. The claw turning mechanism is characterized in that the left and right grip claws are turned so as to hold the temporary gear assembly from the left and right with reference to a turning center point that is a certain distance in front of the center of the left and right gears. .

Since the left and right gripping claws are swung so as to hold the temporary gear assembly from the left and right with reference to the turning center point which is a certain distance in front of the center of the left and right gears, the gear can be moved to a very narrow place. The temporary assembly can be installed and the left and right gripping claws can be unclamped. As a result, the temporary gear assembly can be installed at a predetermined position in a desired posture with a one-step motion, and the work efficiency can be improved. .

According to a second aspect of the present invention, a gourd-shaped link plate is provided on the upper and lower sides of the temporary gear assembly, and on the other hand, the protruding pressing piece and the left and right gripping claws are provided with a collar for gripping the link plate. . Since the link plate can be gripped at the same time, the planetary gear can be incorporated in the planetary carrier.

A third aspect of the present invention is characterized in that the temporary gear assembly is attached to the tip of the linear moving means for linearly moving in the front-rear direction. By combining with the turntable, the planetary gear can be easily incorporated into the planetary carrier.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. Furthermore, “left” and “right” are based on the orientation when the temporary gear assembly being gripped is viewed from the second cylinder side, which will be described later. FIG. 1 is an exploded perspective view of a temporary gear assembly according to the present invention. The temporary gear assembly 1 includes a pair of gears (for convenience, referred to as a left gear 2L and a right gear 2R) and four gears. The washers 3 ... (... indicates a plurality, the same applies hereinafter) and two gourd-shaped link plates 4 and 4. The gourd type is a name for convenience, and the link plate 4 has a shape in which circular plates having the same diameter are connected. Reference numeral 5 is a recess in the front center of the temporary gear assembly.

FIG. 2 is a front view of a temporary gear assembly according to the present invention. A temporary gear assembly is formed by stacking washers 3 ... And link plates 4 and 4 above and below the left and right gears 2L and 2R meshed with each other. The assembly 1 is assembled as shown in the figure in the previous step, and is assembled at a predetermined location by a gripping device described later.

FIG. 3 is an exploded perspective view of the temporary gear assembly holding device according to the present invention. The temporary gear assembly holding device 10 (hereinafter abbreviated as "holding mechanism 10") is mounted on a machine base 11. As shown in FIG. It comprises a first cylinder 13 as a linear moving means attached by bolts 12 ..., a floating base 15 suspended by a piston rod 14 of this cylinder 13, and a claw turning mechanism 20 attached to this floating base 15. The claw swivel mechanism 20 includes a second cylinder 22 attached to the lower surface of the floating base 15 with bolts 21 ..., a movable member 24 attached to piston rods 23 of the cylinder 22, and the movable member. A pair of left and right links 26L and 26R swingably locked to the upper part of the front surface of the pin 24 by a pin 25;
Pins 28, 28 are attached to the tips of these links 26L, 26R.
Rocking arms 29L and 29R locked so that they can be rocked by the floating base 1 and the rocking arms 29L and 29R.
5, the support columns 31 and 31, and the swing arms 29L and 2
Left and right grip claws 32L, 3 integrally formed on the lower part of 9R
2R and a protruding pressing piece 33 attached to the lower part of the front surface of the movable member 24.

The left and right grip claws 32L and 32R are provided with flanges 35 and 35 above and below the pressing portion 34, respectively. Further, the flange 38 is also provided above and below the left hypotenuse 36 and the right hypotenuse 37 of the protruding pressing piece 33.
・ Prepare. The pressing portion 34 and the left and right hypotenuses 36 and 37
The height dimension of is the same as the thickness of the gears 2L and 2R.

FIG. 4 is a side view of the holding device for the temporary gear assembly according to the present invention, which corresponds to the assembly view of FIG. 3, in which the floating base 15 is linearly moved to the left and right in the figure by the action of the first cylinder 13. The movable member 2 is moved by the action of the second cylinder 22.
4 and the protruding pressing piece 33 move linearly, and the swing arms 2 centering around the column 31 by the action of the links 26L and 26R.
9L and the grip claw 32L are shown to swing. The same applies to the swing arm 29R and the grip claw 32R (not shown). 41
Is a stop plate, and 42 is a mounting bolt, which is a member for preventing the rotatable ring portion 29a from coming off.

The operation of the gripping device 10 and the claw turning mechanism 20 described above will be described below. 5 (a) and 5 (b) are shown in FIG.
5A and 5B are views for explaining the action corresponding to the view from arrow 5, in which FIG. 9A shows the grip claw before turning, and FIG. In (a), by pushing out the protruding pressing piece 33, the link 26
The rocking arms 29L and 29R are rocked around the columns 31 and 31 as indicated by arrows via L and 26R. (B)
Shows a figure after turning, 43 and 43 are notches provided on the support, and 44 and 44 are notches provided on the link plate, which are structures adopted to avoid mutual interference.

6 (a) and 6 (b) are explanatory views of the operation corresponding to the view from the arrow 6 in FIG. 4, in which FIG.
(B) shows after the same turn. In (a), by pushing out the protruding pressing piece 33, the grip claws 32L and 32R can be swung as shown by arrows. Gripping claw 32L,
This is because 32R is integral with the swing arms 29L and 29R in FIG. (B) shows the shape after turning, and the link plate 4 is provided with the flanges 38, 38 of the protruding pressing piece 33 and the left and right gripping claws 32.
It shows that it is sandwiched by L and 32R tsuba 35 and 35,
After that, the link plate 4 can be moved as indicated by the white arrow.

7 (a) and 7 (b) are explanatory views of the operation corresponding to the arrow 7 view of FIG. 4, and FIG.
(B) shows after the same turn. In (a), by pushing out the protruding pressing piece 33, the grip claws 32L and 32R can be swung as shown by arrows. (B) shows the figure after turning, and the left gear 2L is attached to the left hypotenuse 3 of the protruding pressing piece 33.
6 and the pressing portion 34 of the left grip claw 32L, and the right gear 2
It is shown that R is held between the right oblique side 37 of the protruding pressing piece 33 and the pressing portion 34 of the right grip claw 32R, and thereafter, the pair of gears 2L and 2R can be moved as shown by the white arrow. .

FIG. 8 is a view for explaining the first operation of the gripping device of the present invention. The gripping device 10 is on standby, the temporary gear assembly 1 is placed on one end of the workbench 51, and the first positioning pin 52 is placed. Position with. On the other hand, the carrier body 54 is placed on the turntable 53.

FIG. 9 is a diagram for explaining the second action of the gripping device of the present invention. The piston rod 23 of the second cylinder 22 is advanced (arrow) to grip the temporary gear assembly 1 by the gripping device 10. This gripped state is as shown in FIGS. 6 (b) and 7 (b).

FIG. 10 is a diagram for explaining the third action of the gripping device of the present invention, in which the first positioning pin 52 is lowered and the piston rod 14 of the first cylinder 13 is moved forward (arrow) to hold the temporary gear assembly. 1 is placed at a predetermined position on the carrier body 54, and is positioned by the second positioning pin 55.

FIG. 11 is a view for explaining the fourth action of the gripping device of the present invention. As a result of the above FIG. 10, it can be seen that the temporary gear assembly 1 can be placed at a predetermined position of the carrier body 54 as shown by the white arrow. Show. The carrier body 54 has three walls 56 ... Between the upper and lower plates, and the left and right grip claws 32L, 32
R indicates that the entry has been made without interfering with the walls 56, 56. After that, the second positioning pin 55 is lowered, and the pins 57 ... Are driven by a pin driving mechanism (not shown) to complete the assembly.

FIG. 12 is a view for explaining the fifth action of the gripping device of the present invention. Although not described in the section of the configuration, there is a structural feature in that the turning center point 59 is offset toward the front side (close to the protruding pressing piece 33) from the center 58 of the gear by a constant distance δ. As a result, the grip claws 32L and 32 shown by the imaginary line
Since the tip of R moves on the locus of arrow, (the circumference around the point 59), it returns to the position of the solid line through the narrow gap between the wall 56 and the link plate 4 (or gears 2L, 2R). Therefore, the left and right gripping claws 32 are unclamped.
There is no concern that the L and 32R will hit the left and right walls 56 and 56, and this embodiment succeeded in assembling the temporary gear assembly 1 at a predetermined position of the carrier body 54 in a desired posture by a one-step motion. That is why.

The pawl swivel mechanism 20 is not limited to the link of this embodiment, but may be a gear set, a belt / pulley, or a pinion rack. In short, the grip claws 32L, 32R are rotated around the swivel center point 59. Any mechanism that can be moved may be used. In addition, the first cylinder 13 which is a linear moving means
May be changed to a robot hand, and the point is that the mechanism and type are not limited as long as the mechanism is capable of linearly reciprocating the floating base 15.

[0024]

The present invention has the following effects due to the above configuration. According to a first aspect of the present invention, there is provided a protruding pressing piece that comes into contact with a front central recess of the gear temporary assembly in which a pair of gears are arranged on the left and right sides,
From the left gripping claw that presses the left gear to the left hypotenuse of the projecting pressing piece, the right gripping claw that presses the right gear to the right hypotenuse of the projecting pressing piece, and the claw turning mechanism that swivels the left and right gripping claws. This claw turning mechanism is characterized by turning the left and right gripping claws so as to hold the temporary gear assembly from the left and right with reference to the turning center point located a certain distance in front of the center of the left and right gears. To do. Since the left and right gripping claws are swung so as to hold the temporary gear assembly from the left and right based on the center of rotation that is a certain distance in front of the center of the left and right gears, the temporary gear assembly can be used even in extremely narrow spaces. And the left and right gripping claws can be unclamped, and as a result, the temporary gear assembly can be assembled in a desired position in a desired position by one-step motion, and the work efficiency can be improved.

According to a second aspect of the present invention, the gourd-shaped link plates are provided on the upper and lower sides of the temporary gear assembly, while the protruding pressing pieces and the left and right holding claws are provided with a brim for holding the link plates. . Since the link plate can be gripped at the same time, the planetary gear can be incorporated in the planetary carrier.

A third aspect of the present invention is characterized in that the temporary gear assembly is attached to the tip of the linear moving means for linearly moving in the front-rear direction. By combining with the turntable, the planetary gear can be easily incorporated into the planetary carrier.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a temporary gear assembly according to the present invention.

FIG. 2 is a front view of a temporary gear assembly according to the present invention.

FIG. 3 is an exploded perspective view of a holding device for a temporary gear assembly according to the present invention.

FIG. 4 is a side view of a holding device for a temporary gear assembly according to the present invention.

5 is an operation explanatory view corresponding to the arrow 5 view in FIG. 4;

FIG. 6 is an operation explanatory view corresponding to the arrow 6 view of FIG. 4;

FIG. 7 is an operation explanatory view corresponding to the arrow 7 view of FIG. 4;

FIG. 8 is a first operation explanatory view of the gripping device of the present invention.

FIG. 9 is a second operation explanatory view of the gripping device of the present invention.

FIG. 10 is a third operation explanatory view of the gripping device of the present invention.

FIG. 11 is a fourth operation explanatory view of the gripping device of the present invention.

FIG. 12 is a fifth operation explanatory view of the gripping device of the present invention.

[Explanation of symbols]

1 ... temporary gear assembly, 2L ... left gear, 2R ... right gear, 4
... link plate, 5 ... recessed part in front center of temporary gear assembly,
10 ... Gripping device for temporary gear assembly, 13 ... Linear moving means (first cylinder), 15 ... Floating base, 20 ... Claw turning mechanism, 26L, 26R ... Link, 29L, 29R ... Swing arm, 31 ... Strut , 32L ... left gripping claw, 32R ... right gripping claw, 33 ... projecting pressing piece, 34 ... pressing part, 35, 38
... Tsuba, 36 ... Left hypotenuse, 37 ... Right hypotenuse, 53 ... Turntable, 54 ... Carrier body, 56 ... Wall, 58 ... Gear center, 59 ... Turning center point, .delta.

Claims (3)

[Claims] 1. A device for gripping a temporary gear assembly formed by meshing a pair of gears, wherein the gripping device is provided in a recess in the front center of the temporary gear assembly in which a pair of gears are arranged on the left and right. The protruding pressing piece that abuts, the left gripping claw that presses the left gear to the left oblique side of the protruding pressing piece, the right gripping claw that presses the right gear to the right oblique side of the protruding pressing piece, and the left and right gripping claws. It consists of a claw swivel mechanism that swivels the left and right claws.The claw swivel mechanism swivels the left and right grip claws so that the temporary gear assembly is held from the left and right with reference to the swivel center point that is a certain distance in front of the center of the left and right gears. A gripping device for a temporary gear assembly, which is characterized in that 2. The temporary gear assembly is provided with a gourd-shaped link plate on the upper and lower sides, while a flange for holding the link plate is provided on the protruding pressing piece and the left and right holding claws. The gripping device for the temporary gear assembly according to claim 1. 3. The gripping device for the temporary gear assembly according to claim 1, wherein the temporary gear assembly is attached to the tip of a linear moving means for linearly moving in the front-rear direction.