JPH0771399A - Manufacture of disc wheel and jig device for manufacture - Google Patents

Abstract

PURPOSE:To improve stability to hold blades and to adjust positioning by making a disc wheel by way of connecting a large number of the blades and a shell. CONSTITUTION:On a fixed table 11 and a rotary table 12, fixed pins 14, 16 energized in the circumferential direction by a spring and taking fixed positions for each blade 1 and movable pins 15, 16 free to relatively move in the circumferential direction are provided. The blades 1 are initially held in the laid state by the fixed pins 14, 16, erected by relative movement of the movable pins 15, 16 and aligned. Thereafter, by pressing a shell 8 on the blades 1 from above by a shell pressing tool 30 and making the blades 1 in the normal state by way of releasing the fixed pins 14, 15 by the spring at this time, the blades l and the shell 8 are connected to each other by beam welding in this state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impeller manufacturing method for manufacturing an impeller by joining a large number of blades and a shell, and
The present invention relates to a jig device for manufacturing an impeller, which positions and holds a large number of blades and shells for its manufacture.

[0002]

2. Description of the Related Art As a conventional jig device for manufacturing an impeller, there is one for joining a blade and a core.
-66530 reference). This includes, as shown in FIG. 14, a holding seat 51 for aligning and holding a large number of blades Wa in the circumferential direction, a positioning member 52 for abutting the edge of the blade Wa and radially positioning the blade Wa. A jig device for manufacturing an impeller, which comprises a clamp member 53 for pressing a peripheral edge of a core Wb mounted on a blade Wa from its upper surface, wherein the clamp member 53 is independent of the positioning member 52. It is designed to be lifted and lowered.

[0003]

However, the conventional jig device for manufacturing an impeller is for joining the blade and the core, and if this method is applied to the joining of the blade and the shell, the blade is In this state, as shown in FIG. 15, the area of the holding seat 51 ′ is smaller than that of 51 in FIG. 14, so that the blade holding becomes unstable. Further, if H in FIG. 15 is reduced to increase the area, the holding seat 51 ′ by welding from the outside of the shell is formed.
May be damaged and the jig may be damaged.

In view of the above-mentioned conventional problems, the present invention provides an optimum method for manufacturing an impeller by bonding a large number of blades and shells to each other, and a large number of blades for manufacturing the same. It is an object of the present invention to provide a jig device for manufacturing an impeller, which is optimal for positioning and holding the blade and the shell.

[0005]

Therefore, in the method for manufacturing an impeller according to the present invention, when a large number of blades and shells are joined to manufacture an impeller, a fixed pin and a movable pin that project onto a table are provided. By holding each blade in a laid state by, by the relative movement of the movable pin with respect to the fixed pin in the circumferential direction, each blade is erected up to a regular mounting angle or more,
A large number of blades are aligned on the table, the shell is pressed against the large number of blades from above, and at this time, the fixing pin is moved against the elastic force that fixes and supports the fixing pin until the blade reaches the regular mounting angle. In this state, a large number of blades and shells are joined together.

Further, in the above method, as a jig device for manufacturing an impeller used for positioning and holding a large number of blades and a shell, a large number of blades are aligned on a table. It has a fixed pin that projects upward and is urged in the circumferential direction by an elastic body to take a fixed position, and a movable pin that projects on the table and is movable in the circumferential direction relative to the fixed pin. The blade is held in a lying state by the movable pin, and the blade holder that raises the blade up to a regular mounting angle or more by the relative movement of the movable pin, and the shell that is raised from above the many blades that are raised by this blade holder. Provided is a shell pressing tool for pressing.

[0007]

In the above-described method for manufacturing an impeller and the jig device for manufacturing the same, the blade can be easily set at the initial position of the movable pin, and then the blade is erected and aligned by the relative movement of the movable pin. In addition, when the shell is pressed, the variation of the blade is absorbed by the bending of the spring that fixes and supports the fixing pin, so that the blade can be accurately positioned, and the outside of the shell is also joined when the blade and the shell are joined. Can be welded from.

[0008]

EXAMPLES Examples of the present invention will be described below. FIG. 1 shows a jig device for manufacturing an impeller for positioning and holding the large number of blades 1 and the shell 8 in order to join the large number of blades 1 and the shell 8 to manufacture an impeller. The vehicle manufacturing jig device includes a blade holder 10 and a shell pressing member 30.

FIG. 1 is a sectional view taken along the line AA of FIG.
Although FIG. 2 is a plan view, the shell 8 and the shell pressing tool 30 are not shown in FIG. Further, FIG. 3 shows B- in FIG.
It is an enlarged view of the B section. 4 is the same sectional view as FIG. 1, but shows a state in which the shell pressing tool 30 presses the shell 8. First, the blade 1 will be described with reference to FIGS.

The blade 1 has an outlet bent portion 2 at one end and a discard flange 3 at the other end. Here, a hole 4 and a notch 5 are formed in the outlet bent portion 2. Further, a hole 6 is formed in the discard flange 3, and a corner portion 7 of the discard flange 3 is used instead of forming a notch. In the jig manufacturing jig device shown in FIGS. 1 and 2, the blade holder 10 has a fixed table 11 and a shaft portion 12a which is covered on the upper surface thereof and is rotatably supported in a central hole of the fixed table 11. It is equipped with a turntable 12 and this turntable 12
Is driven to rotate by a motor 13.

The outermost circumference of the fixed table 11 (the rotary table 12
The same number of fixing pins 14 as the blades 1 are erected at equal intervals in the circumferential direction on the upper surface of the portion (not covered by the blade).
Further, the blade 1 is attached to the outermost upper surface of the rotary table 12.
The same number of movable pins (pins that move integrally with the rotary table 12) 15 are erected side by side at equal intervals in the circumferential direction.

Further, the same number of fixing pins 16 as the blades 1 are provided upright on the inner peripheral upper surface of the fixed table 11 at equal intervals in the circumferential direction. In addition, a through hole 18 having a long hole shape is formed in the rotary table 12 so that the fixed pin 16 penetrates the rotary table 12 and is projected. Further, the same number of movable pins (pins that move integrally with the rotary table 12) 17 as the blades 1 are provided upright on the inner peripheral upper surface of the rotary table 12 at equal intervals in the circumferential direction.

The fixed pin 14, the movable pin 15, the fixed pin 16, and the movable pin 17 correspond to the hole 4, the notch 5, the hole 6, and the corner portion 7 of the blade 1, respectively. In addition, the fixing pins 14 and 16 are not completely fixed, and in FIG.
As shown in the enlarged view of the −B cross section, the bases of the fixing pins 14 and 16 are housed in the grooves 19 and 20 formed in the circumferential direction on the fixed table 11 and can be moved in the grooves 19 and 20. Yes, it is biased by the springs 21 and 22 and is fixedly supported at the initial position (position on the side closer to the movable pins 15 and 17). 23 and 24 are retaining plates for retaining.

Out of the jig device for manufacturing an impeller, a shell pressing tool
30 is arranged above the fixed and rotary tables 11 and 12 and can be raised and lowered, and serves to press the shell 8 against the blades 1 aligned on the fixed and rotary tables 11 and 12. Next, a manufacturing procedure using this jig device for manufacturing an impeller will be described. (1) Before attaching the blade 1 to the blade holder 10, the movable pins 15 and 17 on the rotary table 12 are rotated about 2 ° counterclockwise (away from the fixed pins 14 and 16) in FIG. 2 from the normal position. It is in a rotated state. This allows
By fitting the holes 4 and 6 into the fixing pins 14 and 16 in a state where the blade 1 is laid down, the blade 1 can be easily attached to the blade holder 10 (see FIG. 7).

(2) After mounting all the blades 1, the rotary table 12 is rotated about 2 ° clockwise in FIG. 2 by the motor 13.
The movable pins 15 and 17 are fixed by rotating them.
The blade 1 is moved toward the notch 5 and the corner portion 7 of the blade 1 in cooperation with the fixing pins 14 and 16 to cause the blade 1 to be pinched (FIG. 8).
reference).

(3) When the movable pins 15 and 17 are stopped, the blade 1 has risen too slightly from the normal state, and the movable pins 15 and 17 are too close to the fixed pins 14 and 16 by about 0.2 mm. (See Fig. 9). (4) Next, the shell 8 is placed on the blade 1 and the shell pressing tool 30 is lowered to press the shell 8 against the blade 1. The pressing force at this time is transmitted from the blade 1 through the fixing pins 14 and 16 to the springs 21 and 22 supporting the fixing pins 14 and 16, and the stroke of the spring 20 (until the shell 8 reaches the normal position). Fixed pin 14 within approx. 0.2 mm)
16 escapes in the direction away from the movable pins 15 and 17, and the shell 8
Descends (see Figure 10).

(5) With the shell 8 stopped, the spring 2
1 and 22 absorb all machining variations of the blade 1, and all the blades 1 are held at regular positions with respect to the shell 8 (see FIG. 11). (6) In this state, the blade 1 and the shell 8 are joined by beam welding from the outside of the shell 8 (see FIG. 12).

(7) After joining, the shell pressing tool 30 is raised, and the rotary table 12 is rotated about 2 ° counterclockwise in FIG. 2 by the motor 13, whereby the movable pins 15 and 17 are fixed. Move it away from 16 and return to the initial position. At the beginning of this moving process, the fixing pins 14 and 16 also return to their initial positions by the springs 21 and 22. Therefore, blade 1
Is released from the pressing force of the springs 21 and 22, and can be easily removed from the pins 14 to 17 (see FIG. 13).

(8) After removal, the sacrificial flange 3 of the blade 1 is processed and removed at the same time when the end surface 8a (FIG. 4) of the shell 8 is processed. The discard flange 3 is necessary in the case of a blade having a small tilt angle as in this embodiment, but is not necessary in a turbine blade or a torque converter without a core having a large tilt angle.

[0020]

As described above, according to the present invention, it is possible to improve the stability of blade holding and to achieve accurate positioning without being affected by blade variations. It is also easy to install and remove, and welding from the outside of the blade shell is also possible. It is also applicable to torque converters without cores.

[Brief description of drawings]

FIG. 1 is a sectional view of a jig device for manufacturing an impeller showing an embodiment of the present invention (a sectional view taken along the line AA in FIG. 2).

FIG. 2 is a plan view of the above-mentioned jig device for manufacturing an impeller.

FIG. 3 is an enlarged view of a BB cross section of FIG.

FIG. 4 is a sectional view with the shell pressed.

FIG. 5 is a plan view of a blade

FIG. 6 is a front view of the blade.

FIG. 7 is a diagram showing operating state (1).

FIG. 8 is a diagram showing operating state (2).

FIG. 9 is a diagram showing an operating state (3)

FIG. 10 is a diagram showing an operating state (4)

FIG. 11 is a diagram showing an operating state (5)

FIG. 12 is a diagram showing operating state (6).

FIG. 13 is a diagram showing operating state (7).

FIG. 14 is a sectional view showing a conventional example.

FIG. 15 is a diagram showing conventional problems.

[Explanation of symbols]

 1 blade 2 outlet bent part 3 discard flange 4 hole 5 notch 6 hole 7 corner part 8 shell 10 blade holder 11 fixed table 12 rotary table 13 motor 14, 16 fixed pin 15, 17 movable pin 21, 22 spring 30 shell Pressing tool

Claims (2)

[Claims] 1. When manufacturing an impeller by joining a large number of blades and shells, each blade is held in a lying state by a fixed pin and a movable pin projecting on a table, and the movable pin with respect to the fixed pin is held. By relative movement in the circumferential direction, each blade is raised up to a regular mounting angle or more, a large number of blades are aligned on the table, the shell is pressed against these many blades from above, and the fixing pin is fixed and supported at this time. A method for manufacturing an impeller, characterized in that the fixing pin is moved against the elastic force of the blade until the blade has a regular mounting angle, and in this state a large number of blades and shells are joined. 2. A jig device for positioning and holding a large number of blades and shells for joining a large number of blades and shells to manufacture an impeller, wherein the large number of blades are aligned on a table. Therefore, for each blade, having a fixed pin that projects on the table and is urged in the circumferential direction by the elastic body to take a fixed position, and a movable pin that projects on the table and is relatively movable in the circumferential direction relative to the fixed pin, A blade holder that holds the blade in a lying state by the fixed pin and the movable pin at the initial position of the movable pin, and raises the blade up to a regular mounting angle or more by the relative movement of the movable pin, and a large number of blade holders raised by this blade holder. A jig device for manufacturing an impeller, comprising: a shell pressing tool that presses the shell against the blade from above.