JPH0631926U - Self-aligning clamp device - Google Patents

Abstract

(57) [Summary] [Purpose] Self-alignment of insert clamps that clamp insert screws with low accuracy is possible. [Structure] The bolt 1 that rotates the insert clamp 3
A pair of left and right chuck slide bodies 6 swingably supported by the main body head 4 moving toward and away from the main body head, and a pair of left and right chuck slide bodies 6 supported by the chuck slide body 6 slidably in the left and right directions via an air cylinder 7. It is characterized in that it is formed of a chuck body 8 and a chuck base 10 which is suspended from the front surface of the chuck body 8 via a spring 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to, for example, a self-aligning clamp device in which an insert screw that cannot be manually gripped by hot work is screwed into a separately rotating bolt while holding it in a fixed position.

[0002]

[Prior art]

 In this type of device, when holding the insert screw in place, set the insert clamp that holds the insert screw so that it matches the fixed position on the center line of the rotating bolt, and then move it back and forth in the bolt direction to screw it in. I'm out.

[0003]

[Problems to be solved by the device]

 However, in this case, even if the insert clamp is set so as to match the fixed position on the center line of the bolt and moved forward and backward in the direction of the bolt, unless the two are so accurate, generally, eccentricity, step, screw inclination, Since the misalignment such as the core deviation of the bolt rotation was integrated, the screwing insertion process was extremely difficult.

The present invention was developed to address such a problem, and its object is to ensure that the insert screw is always centered and held in the center of the bolt.

[0005]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above object will be described with reference to FIGS. 1 and 2 corresponding to an embodiment. The present invention rotates an insert clamp 3 which holds an insert screw 2 screwed into a bolt 1. In a clamp device adapted to advance and retreat toward the bolt 1, a pair of left and right chuck slide bodies 6 which are swingably supported by a body head 4 which advances and retracts the insert clamp 3 toward and from the bolt 1, A pair of left and right chuck bodies 8 supported on the chuck slide body 6 via an air cylinder 7 so as to be able to move back and forth in the left-right direction, and a chuck mouthpiece 10 suspended on the front surface of the chuck body 8 via a spring 9. It is characterized by being formed from.

[0006]

[Action]

 According to the present invention, the chuck body slides left and right by the operation of the air cylinder by the above-mentioned means, and the chuck ferrule suspended from the front surface of the chuck by the spring and holding the insert screw is located substantially at the center of the chuck body. The tilt of the chuck body moves forward and backward toward the bolt, and the tilt of the chuck slide body that is swingably supported by the body head allows the insert screw to be screwed into the bolt. When they are screwed together, they can be screwed in while absorbing the overall meshing failure such as axial step between them, twisting, tilting, and shaking.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. 1 is a rotating bolt, 2 is an insert screw that is screwed into a rotating bolt 1, and 3 is a bolt that holds the insert screw 2 and is attached to the bolt 1. An insert clamp that moves forward and backward is shown, and the insert clamp 3 is swingable through a pivot 5 to a pair of left and right pedestals 4a, 4a provided on the upper surface of a main body head 4 that moves forward and backward toward the bolt 1. A pair of left and right chuck slide bodies 6 and 6 supported on the slide bodies 6 and a pair of left and right chuck bodies 8 which are supported on the slide bodies 6 and 6 through air cylinders 7 and 7 so as to be slidable in the left and right directions. 8 and V-shaped chuck caps 10, 10 which are suspended and suspended via four coil springs 9 on V-shaped receiving surfaces 8a, 8a on the front surfaces of the chuck bodies 8, 8. There is.

[0008] Thus, the insert screw 2 is a mass-produced product of grade 3 or less that does not require precision such as hot and rolling for reinforced concrete having an uneven outer shape, and the quality difference between products is extremely eccentric and stepped. ， Even if the chamfering is defective, the screw is slanted, or the diameter is different, it is suspended by a chuck body that slides left and right by an air cylinder via a spring. At the same time, the tilt is adjusted by the chuck slide body that is swung by the body head that moves back and forth toward the bolt, and is smoothly screwed into the rotating bolt.

[0009]

[Effect of device]

 As described above, according to the present invention, a pair of left and right chuck slide bodies that are swingably supported by the body head that advances and retreats toward the rotating bolt of the insert clamp and slides in the left and right directions on the chuck slide bodies via the air cylinder. The insert clamp is formed by a pair of left and right chuck bodies that are freely supported and a chuck mouthpiece that is suspended on the front surface of the chuck body through a spring. Therefore, the insert clamp automatically aligns the insert screw clamped to this. When the insert screw is screwed into the bolt, it has the effect that it can be screwed while absorbing the overall meshing failure such as axial step difference between the two, the twist, and tilting head runout.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a front view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Bolt 2 Insert Screw 3 Insert Clamp 4 Body Head 6 Chuck Slide Body 7 Air Cylinder 8 Chuck Body 9 Spring 10 Chuck Mouth

Claims (1)

[Scope of utility model registration request] 1. A clamp device in which an insert clamp that holds an insert screw that is screwed into a bolt is advanced and retracted toward a rotating bolt, and the insert clamp is swingable to a body head that is advanced and retracted toward the bolt. And a pair of left and right chuck slide bodies supported on the chuck slide body, a pair of left and right chuck bodies supported on the chuck slide body so as to be slidable in the left and right directions via an air cylinder, and floating on the front surface of the chuck body via springs. A self-aligning clamp device characterized by being formed from a suspended chuck base.