Investment casting method of knotter rack

Abstract

The invention relates to an investment casting method of a knotter rack. The investment casting method is characterized by comprising the steps of 1) establishing a three-dimensional model of the knotter rack through three-dimensional software; 2) carrying out data processing on the three-dimensional model through hierarchical processing software; 3) sending model manufacturing data obtained after data processing into a rapid forming machine for rapid formation of a rack model; 4) carrying out investment casting through adopting the rack model as a wax model, so as to obtain a metal casting of the knotter rack; and 5) carrying out machining treatment on the metal casting. According to the investment casting method, a rapid forming technology and an investment casting technology are combined, so that the metal casting of the knotter rack can be obtained in a short time, and the manufacturing cycle is shortened; the rack model is manufactured through adopting the rapid forming technology, so that the manufactured rack model is high in accuracy, the used time is short, the wax model is not required to be developed, and the cost is reduced; and besides, the metal casting of the knotter rack is manufactured through adopting investment casting, so that the knotter rack with complex axial spatial position can be manufactured.

Description

technical field [0001] The invention relates to an investment casting method for a knotter frame and belongs to the field of precision casting. Background technique [0002] Agricultural machinery equipment is one of the ten strategic key areas of "Made in China 2025". It is imperative to improve the manufacturing level of agricultural machinery equipment in my country and promote the innovative research and development of agricultural machinery equipment. The knotter is a key part of the square bale picker and baler. When working, the picker baler presses the bulk grass placed on the ground into a rectangular bale, and then the knotter automatically knots the bale, which is convenient for subsequent Loading, unloading, transport and storage work. At present, common knotters are C-type knotters for slipknots and D-type knotters for dead knots. Among them, the D-type knotter has a complex structure and is difficult to manufacture and process, which is a difficult problem in...

AI Technical Summary

Problems solved by technology

However, the traditional investment casting processing frame needs to obtain the wax model of the frame through mold or machining, which consumes a lot of manpower, material resources and financial resources.

At the same time, for the knotter frame, which has a complex spatial structure, difficult wax mold demoulding, and high precision parts, the wax mold manufacturing is more difficult. Not only the production process is complicated, the manufacturing cycle is long, but the wax mold is fragile and melts. , which is not conducive to the casting of subsequent racks

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