Device for processing cold internal hole of tube blanks

Abstract

The present invention relates to cold centering device as one kind of mechanical device, and is especially one kind of autogenous cutting carbon arc device, in which electric arc generates between a carbon rod and a pipe blank serving as electrodes under the action of low voltage great current power source to smelt metal fast, and compressed air or water is used to blow off the molten metal. The present invention can realize automatic machining, and has high machining uniformity, in-situ machining and high production efficiency.

Description

technical field

[0001] The present invention relates to a mechanical device, in particular to a cold centering device. Background technique

[0002] The tube blank will form "iron ears" near the end of the piercing process. The "iron ears" will cause great damage to the subsequent equipment of steel pipe production, and cutting off the "iron ears" will cause a huge waste of materials. Machining a shallow hole at the center of the rear end face of the tube blank can prevent the occurrence of "iron ears", the so-called cold centering process. At present, the method of processing shallow holes is mainly to use drilling, and the production efficiency of this method is very low. SUMMARY OF THE INVENTION

[0003] The purpose of the present invention is to solve the problems existing in the tube blank cold centering hole processing device, and to provide a carbon arc gas cutting shallow hole processing device with high processing efficiency.

[0004] In order to achieve the pu...

Examples

Embodiment

[0010] Example: This tube blank cold centering hole processing device includes a clamp 1 that controls and clamps the tube blank 11 through a cylinder 2; a carbon rod 9 that generates an arc with the tube blank 11; a cathode power source 3 that makes the tube blank 11 carry a negative electrode ; The anode power supply 7 with the positive electrode of the carbon rod 9; The cathode power source 3 is connected to the tube blank 11 through a copper rod. The feeding mechanism includes a servo motor 4 , a screw rod 5 and a guide rail 10 .

[0011] The function of the clamp 1 driven by the cylinder is to fix the carbon arc gas cutting equipment on the tube blank 11 to be processed, and to align the carbon rod 9 with the center of the processing surface of the tube blank. According to the size of the tube blank 11, the alignment of the carbon rod 9 can be adjusted by changing the collet.

[0012] The copper rods add electrodes to the tube blank 11 so as to generate an electric arc ...

technical field

[0001] The present invention relates to a mechanical device, in particular to a cold centering device. Background technique

[0002] The tube blank will form "iron ears" near the end of the piercing process. The "iron ears" will cause great damage to the subsequent equipment of steel pipe production, and cutting off the "iron ears" will cause a huge waste of materials. Machining a shallow hole at the center of the rear end face of the tube blank can prevent the occurrence of "iron ears", the so-called cold centering process. At present, the method of processing shallow holes is mainly to use drilling, and the production efficiency of this method is very low. SUMMARY OF THE INVENTION

[0003] The purpose of the present invention is to solve the problems existing in the tube blank cold centering hole processing device, and to provide a carbon arc gas cutting shallow hole processing device with high processing efficiency.

[0004] In order to achieve the pu...

Examples

Embodiment

[0010] Example: This tube blank cold centering hole processing device includes a clamp 1 that controls and clamps the tube blank 11 through a cylinder 2; a carbon rod 9 that generates an arc with the tube blank 11; a cathode power source 3 that makes the tube blank 11 carry a negative electrode ; The anode power supply 7 with the positive electrode of the carbon rod 9; The cathode power source 3 is connected to the tube blank 11 through a copper rod. The feeding mechanism includes a servo motor 4 , a screw rod 5 and a guide rail 10 .

[0011] The function of the clamp 1 driven by the cylinder is to fix the carbon arc gas cutting equipment on the tube blank 11 to be processed, and to align the carbon rod 9 with the center of the processing surface of the tube blank. According to the size of the tube blank 11, the alignment of the carbon rod 9 can be adjusted by changing the collet.

[0012] The copper rods add electrodes to the tube blank 11 so as to generate an electric arc ...

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