JPS6317847Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combination of keys for fixing rotating members used in a press machine when a plurality of rotating members must be fixed in phase with each other.

Conventionally, a tangential key used for fixing a rotating member to a rotating shaft and transmitting rotational force consists of two members with inclined surfaces, as shown in Fig. 2(d), and when combined, forms a key with a rectangular cross section. It is generally known that the formation of If this is fixed using two sets as shown in Figure 2b, it will be difficult to adjust the two sets of tangent keys if you remove it and reassemble it to keep the mounting angle α with the shaft constant. angle α
The disadvantage is that it is time-consuming and inconvenient to measure.

The purpose of the present invention is to eliminate this drawback, and to provide a key for fixing a rotating member used in a press machine, which can be assembled to the initially adjusted mounting angle by simply assembling it, and is easy to handle by omitting complicated adjustment and measurement of the mounting angle. The aim is to provide a combination of Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a drive shaft 1 of a press machine is driven by an electric motor via a clutch and a brake. The rotating shaft 2 connects to the driving shaft 1 via a pinion 3, etc.
The slide of the press is raised and lowered via the connecting rod 8 and the like. Both the drive shaft 1 and the rotation shaft 2 are rotatably supported by a frame 10 of the press. A pinion 3 is fixed to the drive shaft 1,
It meshes with a gear 4 rotatably supported by a frame 10. The gear 4 is provided eccentrically with respect to the rotating shaft 2, and the end of the rotating shaft 2 extends into the inner diameter portion thereof. A rotating member 5 is fixed to the end of the rotating shaft 2 by a plurality of keys 7, as shown in FIG. 2b. Pin 4a provided on gear 4 and rotating member 5
A pin 5a provided on the arm of the arm is connected to the pin 5a by a link 6.

The rotation of the gear 4 at a constant speed is caused by a quick return mechanism consisting of a rotating member 5 and a link 6, which causes the gear 4 to rotate at a constant speed.
is transmitted as inconstant rotation. A similar mechanism is provided at the other end of the rotating shaft 2, and the rotating members 5, 5 at both ends are provided so as to rotate in phase with each other. The rotating shaft 2 is integrally provided with a plurality of eccentric shafts 2a. One end of a connecting rod 8 is rotatably held on the eccentric shaft 2a, and the other end of the connecting rod 8 is rotatably held on a shaft 9 provided on a slide of the press. Therefore, the slide of the press is made to descend slowly and rise rapidly by the above mechanism.

In FIG. 2, there are two rotating members 5 on the rotating shaft 2.
It is fixed by book keys 7,7. By matching the mounting angle α between the eccentric shaft 2a and the pin 5a of the rotating member 5 around the center of the rotating shaft 2 for the rotating members 5, 5 on both sides of the rotating shaft 2, the phases can be matched with each other. This ensures smooth rotation of the rotating shaft 2. In this invention, keys 7, 7
is inserted into the mounting part provided when the rotating shaft 2 and rotating member 5 are normally fixed with two tangential keys. A key 7a having a length of
The other one was a tangent key 7b shown in Figure d. By doing this, the rotating member 5 is positioned with respect to the rotating shaft 2 by the key 7a, and is tightened and fixed by the tangential key 7b. Therefore, no matter how many times the mounting angle α is remounted, it remains the initially determined angle and there is no risk of it changing. As long as there is no deformation of the key 7a and its mounting portion, the mounting angle α is maintained, so there is no need to measure each time, and the number of man-hours can be saved.

As is clear from the above explanation, according to the present invention, simply assembling the device secures the initially adjusted angle, and there is no need to perform complicated angle adjustments and measurements each time the device is assembled, making it easy to handle. The practical effects and advantages are extremely large.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view showing the main part of a press machine using the embodiment, and Fig. 2 is an explanatory diagram showing the operation and appearance. 1 is a drive shaft, 2 is a rotating shaft, 2a is an eccentric shaft, 3 is a pinion, 4 is a gear, 4a is a pin, 5 is a rotating member, 5a is a pin, 6 is a link, 7 is a key, 7a is a key, 7b is a normal tangential key, 8 is a connecting rod, 9 is a shaft, and 10 is a frame.

Claims (1)

[Scope of utility model registration request] In the combination of a rotating member to be fixed in phase with the rotating shaft of a press machine and a key for fixing the rotating shaft, two tangential keys are provided when the rotating shaft and the rotating member are normally fixed. A press characterized in that the mounting portion is provided with a combination of a key 7a having a rectangular cross section and a required length on one side, and a tangential key 7b having a rectangular cross section made by combining two keys with a slope on one side on the other side. A combination of keys for fixing rotating parts used in machinery.