Milling mechanism for milling machines special for tube plate partitions

Abstract

The invention discloses a milling mechanism for milling machines special for tube plate partitions. The milling mechanism comprises a fixing rack, a small pulley, a large pulley, a V belt, and a speed regulating motor. The large pulley is fixedly connected with a spindle. A three-jaw chuck and a milling tool are mounted at the lower end of the spindle. After a milling machine special for slotting tube plate partitions finishes is manufactured, three partition slots of three tube plates with nominal diameters (DN800mm, DN1200mm and DN1800mm) are subjected to trial machining, operating conditions of the milling machine and machining quality of work pieces are assessed, and results show that machining quality, machining precision and surface roughness of work pieces can all meet the demands of drawings.

Description

technical field [0001] The invention relates to the field of milling machines, in particular to a milling mechanism of a special milling machine for tube plate partitions. Background technique [0002] Heat exchanger is the main equipment in chemical production, and heat exchanger manufacturing is an important part of pressure vessel manufacturing. In the manufacture of heat exchangers, the processing of the tube plate partition grooves of double-shell, double-tube and multi-tube heat exchangers is an important process, which has high requirements for dimensional tolerances, shape tolerances and surface roughness. . As the scale of chemical production continues to expand in recent years, the size of heat exchangers is also increasing. For the processing of large-scale heat exchanger partitions, large-scale planers or milling machines are required. The purchase price of such large-scale processing equipment is generally In the hundreds of thousands or millions, generall...

AI Technical Summary

Problems solved by technology

As the scale of chemical production continues to expand in recent years, the size of heat exchangers is also increasing. For the processing of large-scale heat exchanger partitions, large-scale planers or milling machines are required. The purchase price of such large-scale processing equipment is generally In the hundreds of thousands or millions, generally small and medium-sized pressure vessel manufacturers cannot bear it, and the utilization rate is not high

The processing of such tube plate partition grooves generally adopts the method of outsourcing processing, but the outsourcing processing time is long, the processing cost is high, and the round-trip transportation causes delays in the construction period and increased costs, which affects the economic benefits of the enterprise

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