Adjustment method of inner-profile radial floating tool rest and tool

Abstract

The invention relates to an internal profile modeling tool apron which is used in a steel pipe flat-end-face chamfering device in a large-dimensional and straightly welded seam pipe production line and floats along the radial direction; the tool apron comprises a cutter head, of which the end face are symmetrically provided with four sliding base bodies along the radial direction; each sliding base body is provided with a floating tool apron by a connecting screw rod; a cutter is vertical to the side wall of a steel pipe and arranged on the outer end of the floating tool apron, namely, the end far from an axis; the rear part of the cutter is provided with screw threads which are connected with a cutter adjusting mechanism; the end faces and the middle part of the sliding base bodies are provided with a spring slots; a plurality of dish-shape springs are sheathed on the connecting screw rod and arranged in the spring slots; the outer end of the connecting screw rod is provided with a spring adjusting nut; floating stroke adjusting nuts are arranged on the connecting screw rod and at the inner end of the spring adjusting nut; a profile modeling rolling is arranged at the inner end of the floating tool apron and rolls against the interior wall of the steel pipe; the position of the cutter and the steel pipe wall are relatively fixed, thereby simultaneous penetration of four cutters on the cutter head, even turning, no easy collision of the cutters and high production efficiency are ensured. The invention also relates to an adjusting method of the cutters.

Description

technical field [0001] The invention belongs to the field of metal cutting, in particular to an internal profiling radial floating tool seat used in a steel pipe flat end face chamfering machine for a large straight welded pipe production line. The invention also relates to a method for adjusting the tool. technical background [0002] The steel pipes used in oil pipelines, whether they are straight seam steel pipes or spiral welded seam steel pipes, all require welding grooves of a certain shape on the ends of the steel pipes. The steel pipe flat end face chamfering machine is a special equipment for processing the steel pipe end face welding groove after the steel pipe is formed. In the existing steel pipe flat end face chamfering machine, the cutterhead structure is that one cutterhead is equipped with two tool holders, the cutter on one cutter holder is used for flat ends, and the other cutter is used for chamfering, resulting in unstable processing, which cannot or is ...

AI Technical Summary

Problems solved by technology

In the existing steel pipe flat end face chamfering machine, the cutterhead structure is that one cutterhead is equipped with two tool holders, the cutter on one cutter holder is used for flat ends, and the other cutter is used for chamfering, resulting in unstable processing, which cannot or is very difficult It is difficult to guarantee the processing quality, easy to cut the knife, and the production efficiency is low; because the tool is placed perpendicular to the end face of the cutter head, it is difficult to adjust the tool, and the application of outer wall profiling limits the range of processing pipe diameters. If the pipe diameter is too large, it will lead to cost Increase too much, and reduce the stability of processing

In 2006, Baosteel invited bids for a straight seam steel pipe production line with an annual output of 500,000 tons. As mentioned above, because the steel pipe flat end face chamfering machine equipped on the original steel pipe production line had only one main cutting tool, it could process 5 to 6 steel pipes per hour. The maximum is no more than 300,000 tons, which cannot meet the production capacity of the entire production line

Aiming at the problem that the steel pipe flat end chamfering machine equipped on Baosteel's straight seam steel pipe production line with an annual output of 500,000 tons cannot complete the annual output of 500,000 tons of steel pipes, and the above-mentioned technical problems existing in the existing steel pipe flat end chamfering machine, our factory has carried out research and development. The technical research of the new processing cutterhead has achieved success

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