JP2718003B2 - Moving device of working part in pipe cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for moving a work part including a cutting device in an automatic cutting machine for a pipe having a relatively large diameter and a long length.

[0002]

2. Description of the Related Art Heretofore, the driving of a cutting device in this type of pipe cutting machine has been performed by rotating a pinion which meshes with a rack disposed in parallel with a holding table of a pipe as a processing material. However, when only the rack and pinion mechanism is used, the backlash is relatively large, and there is a problem in maintaining precision when precise and complicated curved cutting is required.

On the other hand, when cutting a relatively large-diameter and long pipe as described above, all movements of a worktable equipped with a cutting device must be performed using precise feeding means with almost no backlash. Has had a disadvantage in terms of efficiency in that it takes too much time to move the cutting device to a predetermined position.

[0004]

SUMMARY OF THE INVENTION In this invention, a torch table as a working table is moved to a position near a predetermined position, and then the torch block is moved on the torch table with high precision reciprocating means. The purpose of the present invention is to finely adjust the working position by using the above method.

[0005]

In other words, the present invention is characterized in that it is gripped on a gantry base by a chucking mechanism.
A traveling rail for a pipe cradle, on which a pipe cradle supporting a pipe as a processing material is mounted, and a torch pedestal traveling rail installed in parallel with the traveling rail for the pipe cradle, A rack and pinion mechanism for reciprocating the torch along the torch travel rail is provided, and the torch mounted on the torch is provided with the torch. A reciprocating means for moving the cutting device mounted on the torch block up and down; and a reciprocating means for moving the cutting device mounted on the torch block up and down on the torch table. A mobile device is proposed.

[0006]

In the above apparatus according to the present invention, the torch table is first moved to the vicinity of a predetermined work place by using the rack and pinion mechanism, and then the torch block mounted on the torch table is raised. The precision reciprocating motion and the high-precision vertical movement of the cutting device on the torch block perform precise positioning of the cutting device.

[0007]

1 and 2 are a side view and a plan view, respectively, of the entire pipe cutting machine, partially omitted, which is to be gripped on a gantry base 1 by a chucking mechanism 2. FIG. A traveling rail 4 for a pipe cradle on which a pipe cradle 3 for supporting a pipe (not shown) as a processing material is provided; and a torch installed in parallel with the traveling rail 4 for the pipe cradle. And a table running rail 5.

Along the torch stand running rail 5, the torch
A rack and pinion mechanism 7 for reciprocating the torch 6 is provided, and the torch 8 mounted on the torch 6 is moved on the torch 6. High-precision reciprocating means 9 for moving the cutting device 10 mounted on the torch block 8 up and down.
1 is provided. In the above figure, 12 and 13
Are bellows for protecting the torch movement.

FIGS. 3 and 4 are a partial plan view and a side view, respectively, showing the relationship between the torch base 6 and the torch block 8. The torch is reciprocated by the rack and pinion mechanism 7. FIG. The torch block 8 implanted on the torch table 6 is provided with a high-precision reciprocating means including a servo motor 14 and a precision screw rod 15 in parallel with the torch table running rail 5. 9 is reciprocated.

The torch block 8 is reciprocated by a high-precision reciprocating means 11 including a servomotor 16 and a screw rod 17 in a direction orthogonal to the reciprocation by the high-precision reciprocating means 9. It is movable.

A reciprocating means 23 including a roller chain 21 and a sprocket wheel 22 is provided on the torch block 8 for vertically moving a cutting device 10 including a cutting torch 18 and a copying roller device 19 (FIG. 1). 5),
The high-precision reciprocating means 9 and 11 and the reciprocating means 23
With this, the positioning of the cutting torch 18 supported by the cutting device 10 is performed.

In using the apparatus of the present invention having the above structure, pipes are mounted on the front chucking mechanism 2 and the pipe receiving base 3 by a predetermined procedure, and then the torch table 6 is moved by the rack and pinion mechanism 7. The torch stand running rail 5
The cutting torch 18 is moved by moving the cutting torch 18 approximately to a predetermined position, and then the torch block 8 is finely adjusted by the high-precision reciprocating means 9 and the high-precision reciprocating means 11 to position the cutting torch 18.

[0013]

According to the apparatus having the above-described structure of the present invention, the torch table is moved at a high speed to the vicinity of the work position by the rack and pinion mechanism, and then the torch table is moved to the position above the torch table. Since the positioning of the cutting device can be performed by finely moving the torch block in the left-right and front-back directions, it is possible to shorten the time required to start the work for cutting a large-diameter and long pipe. This makes it possible to improve the positioning accuracy.

[Brief description of the drawings]

FIG. 1 is a partially omitted side view of a pipe cutting machine including an apparatus of the present invention.

FIG. 2 is a plan view of the device shown in FIG.

FIG. 3 is an enlarged plan view showing a relationship between a torch base and a torch block according to the present invention.

FIG. 4 is a side view of the portion shown in FIG.

FIG. 5 is an enlarged sectional view of a torch block portion.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 mounting base 2 chucking mechanism 3 pipe receiving stand 4 pipe receiving stand traveling rail 5 torch stand traveling rail 6 torch stand 7 rack and pinion mechanism 8 torch block 9 high precision reciprocating means 10 Cutting device 11 High-precision reciprocating means 23 Reciprocating means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B23K 37/02 301 B23K 37/02 301Z

Claims (1)

(57) [Claims] 1. A travel rail for a pipe cradle on which a pipe cradle for supporting a pipe as a processing material, which is gripped by a chucking mechanism, is mounted on a gantry base, and is parallel to the travel rail for the pipe cradle. And a rack and pinion mechanism to reciprocate the torch table along this torch table travel rail,
The torch block mounted on the torch table has high-precision reciprocating means for moving the torch block back and forth on the torch table, and reciprocating means for vertically moving a cutting device mounted on the torch block. A moving device for a working part in a pipe cutting machine, comprising: