Punching method for smoke pipe circumferential holes

Abstract

The invention discloses a punching method for smoke pipe circumferential holes. The punching method comprises the following steps that: the two ends of a smoke pipe are positioned through two groups of pinch rollers in a compression manner, a three-jaw chuck is arranged at one end of the smoke pipe, the three-jaw chuck and one group of pinch rollers are mounted on a sliding seat, and the sliding seat is arranged on a linear guide rail in a sleeving manner and can move along the linear guide rail under the action of a screw driving system; after the three-jaw chuck fully enters the smoke pipe, a chuck driving cylinder is started, and the chuck driving cylinder drives the three-jaw chuck to stretch and grip the inner wall of the smoke pipe; the zero position of the chuck driving cylinder is set; in a step 6, when the chuck driving cylinder is confirmed to be at the zero position, a punch moves and punches the first row of round holes; a chuck driving motor rotates for a certain angle, the punch moves again and punches the second row of holes; operation is repeatedly carried out in this way until the chuck driving motor rotates n-1 times and the punch moves and punches the nth rows of holes; and the whole punching process is finished. The method adopted by the invention is high in automation degree, can realize multiple procedures, greatly improves the punching efficiency, reduces manual labor and reduces the production cost.

Description

technical field [0001] The invention relates to the field of tubular workpiece processing, in particular to a punching method for the circumferential hole of a smoke pipe. Background technique [0002] The smoke pipe is a pipe used for exhausting smoke. One end of the smoke pipe is punched with a circle of pin holes along the circumference, and a cap needs to be welded on this end; the other end of the smoke pipe usually needs to be flared, and two Mounting holes to mount the flue pipe to exhaust equipment through the flared end and the mounting holes. [0003] Traditional smoke pipe processing needs to go through four processes of flaring, punching installation holes, punching shaft holes and welding caps in sequence. These four processes are all for processing the single end of the smoke pipe, and need to use feeding equipment or manual feeding The smoke pipe is transported to the punching machine or welding device for welding, and then the clamping device is fixed before...

AI Technical Summary

Problems solved by technology

However, in the existing pipe peripheral hole punching device, a clamping cylinder is usually used to extend one end of the pipe into the punch press, and then another cylinder is used to drive the pipe to rotate; such clamping, feeding and rotating methods not only have low positioning accuracy , and the operation is relatively cumbersome, the degree of automation is low, and manual assistance is often required to complete the punching operation

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