JPH08323647A - Stamping device - Google Patents

Abstract

PURPOSE: To limit the movement of a body to be inserted loosely onto a shaft body to a specified range on the shaft body and prevent extraction by forming projected pressing parts on a stamping device main body apart from each other by a distance smaller than the diameter of a stamping shaft body. CONSTITUTION: Projected pressing parts 2 are formed on a stamping device main body 1 apart from each other by a distance smaller than the diameter of a stamping shaft body (a). Also the string device main body 1 is pressed against the shaft body (a) by the pressing part 2. By this, the right and left pressing part 2 can form dwelling parts 4 on the shaft body (a), respectively, by one driving. In addition, the dwelling parts 4 are larger than normal chisels. Thus the movement of a body to be inserted loosely onto the shaft body (a) is limited to a specified range on the shaft body (a), and the loosening-off of the body can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can easily form a structure capable of limiting an inserted body loosely fitted and inserted into a shaft body within a predetermined moving range with respect to the shaft body and preventing retaining. Uru stamping device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, an inserted body c loosely fitted into a shaft body a may be prevented from falling downward by a split pin b. Further, as shown in FIG. 5, there is also one in which notches d having a substantially V-shaped cross section are formed on the left and right on the circumferential surface of the shaft body a by "chisel".

[0003]

However, in the former configuration, a hole into which the split pin b can be inserted has to be machined in the shaft body a. Therefore, when the diameter of the shaft body a becomes small, the machining is extremely difficult. However, there is a problem that the strength of the shaft body is significantly reduced. On the other hand, in the latter configuration, it is necessary to form the notches at the opposite positions of the shaft body, and therefore, there is a problem in that machining requires labor.

[0004]

In order to solve the above-mentioned problems, the present invention, as shown in FIG. 1, presses the main body 2 at a distance smaller than the diameter of the shaft a, and presses it. 2 was formed and pressed against the circumferential portion of the shaft a.

[0005]

As a result of adopting the above configuration, the present invention provides
As shown in FIGS. 2 and 3, by pressing the engraving device 1 against the shaft body, the left and right pressing portions 2 and 2 respectively form the bulging portions 4 and 4 on the shaft body a by one-time driving. be able to. Moreover, the amount of swelling becomes larger than that of ordinary chisel.

[Brief description of drawings]

FIG. 1 shows a perspective view of an embossing device of the present invention.

FIG. 2 is a side view showing a state before embossing of the embossing device of the present invention.

FIG. 3 is a side view showing a state after stamping by the stamping device of the present invention.

FIG. 4 is a side view showing a state in which a split pin is used to prevent removal.

FIG. 5 is a side view showing a state in which a V-shaped notch is used to prevent retention.

[Explanation of symbols]

 1 main body 2 pressing portion 4 bulging portion a shaft body b split pin

Claims (1)

[Claims] 1. An engraving device comprising a main body 1 and pressing portions 2, 2 protruding at intervals smaller than the diameter of a shaft a to be engraved.