JPH1177452A - Socket for bolt and nut fastening device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To automatically correct misalignment of a socket with respect to a bolt / nut without modifying a current nut runner having a normal socket. A guide attachment having an arc-shaped step guide surface inclined in the rotation direction on the circumference of an end surface of a ring member is fitted to an outer periphery of an end surface of the socket, and the socket is attached to a nut. Alignment is automatically corrected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt and a nut capable of automatically correcting a misalignment of a socket with respect to a bolt and a nut.
The present invention relates to a nut fastening device socket.

[0002]

2. Description of the Related Art When a bolt or a nut is fastened by a nut runner provided in an automatic fastening device, a socket of a positioned nut runner may be misaligned with respect to the bolt / nut. In order to automatically correct the misalignment of the socket, an introductory portion is provided at the end face of the socket so as to be divergent, and the socket is automatically mounted on the drive shaft of the nut runner so that the bolt can be floated. Floating socket is disclosed in
No. 253,768.

[0003]

In the above prior art, the socket itself and the filling mechanism must be specially manufactured and attached to the nut runner through a special adapter, and have a normal socket. However, there is a problem that it cannot be used immediately for a currently used nut runner, requires a large number of parts, and increases the cost.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a conventional nutrunner having a normal socket without extensive modification.
An object of the present invention is to provide a socket for a bolt and nut fastening device which can automatically correct the misalignment of the socket with respect to the bolt and nut.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a nut runner socket provided in an automatic fastening device, wherein the nut runner socket is provided on a circumference of an end face of a ring member in a rotational direction. A guide attachment having an inclined arc-shaped step guide surface is fitted to the outer periphery of the end face of the socket.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a normal socket having a hexagonal hole 2 fitted on a bolt head or a nut on an end face thereof, although not shown, a nut provided in a known automatic fastening device. Mounted on the drive shaft of the runner.

According to the present invention, an inductive attachment 3 for automatically correcting the misalignment of the socket 1 with respect to a bolt or a nut is fitted around the outer periphery of the end face of the socket 1.

[0008] The attraction attachment 3 is shown in Figs.
As shown in the figure, the rotation direction N
This is a configuration in which an arc-shaped step guide surface 4 that is inclined at an angle is formed.

Since the present invention is configured as described above, the centering attachment 3 is fitted around the end face of the ordinary socket 1 and fixed with the screw 5, so that the misalignment of the socket 1 with respect to the bolt or nut can be automatically adjusted. The setting is completed in a state where correction is possible.

As shown in FIG. 3, when the nut 6 is tightened by the socket 1 on which the guide attachment 3 is set, if the socket 1 is misaligned with respect to the nut 6, the guide rotates integrally with the socket 1. The step guide surface 4 of the attachment 3 comes into contact with the nut 6, and the socket 1 is forcibly displaced coaxially with the nut 6 by the step guide surface 4 together with the nut runner provided in the automatic fastening device. And tighten the nut.
Although the above embodiment has been described with the nut 6, the same applies to the bolt.

[0011]

As described above, according to the present invention, an inductive attachment having an arc-shaped step guide surface inclined in the rotation direction on the circumference of the end face of the ring member is fitted to the outer circumference of the end face of the socket. Because of the configuration, it can be used immediately for an existing nut runner having a normal socket, and has an advantage that the structure is simple and can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a side view of the present invention.

FIG. 3 is a front view of the use state of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket 2 Hexagon hole 3 Attraction attachment 4 Step guide surface 5 Screw 6 Nut

Claims (1)

[Claims] 1. A nut runner socket provided in an automatic fastening device, comprising: an inductive attachment having an arc-shaped step guide surface inclined in a rotational direction on a circumference of an end surface of a ring member; A socket for a bolt and nut fastening device, wherein the socket is fitted around the end face of the socket.