Pipe pulling and drawing lubricating device and pipe pulling and drawing machining method

Abstract

The invention discloses a pipe pulling and drawing lubricating device, and further discloses a pipe pulling and drawing machining method. The pipe pulling and drawing lubricating device comprises an oil supplying mechanism arranged on a chain broaching machine and a lubricating pipe connected with the oil supplying mechanism. The oil supplying mechanism comprises an oil box for storing lubricatingoil, an oil injecting pipe connected with the lubricating pipe and an oil injecting pump connected to the position between the oil box and the oil injecting pipe. The lubricating pipe is composed ofa flat and straight steel pipe, a sealing plate arranged at one end of the flat and straight steel pipe and a connecting rod mounted on the end face of the sealing plate and used for being connected with a pulling and drawing core head. The flat and straight steel pipe is composed of an oil injecting section, a clamping section and a connecting section. The pipe pulling and drawing machining method comprises the steps of 1, preparation of a to-be-pulled-drawn pipe blank, 2, mounting of a pulling and drawing external mold and the to-be-pulled-drawn pipe blank, 3, mounting of the lubricating device and the pulling and drawing core head, and 4, lubricating and pulling-drawing of the to-be-pulled-drawn pipe blank. According to the pipe pulling and drawing lubricating device, the purpose that the lubricating oil is continuously injected into the pipe blank can be achieved, the phenomena that adding of the lubricating oil is uneven, and the local lubricating oil of the inner wall of a pipe is absent cannot occur, and the quality of the inner surface of the pipe after being pulled and drawn is improved.

Description

technical field [0001] The invention relates to a lubricating device and a pipe material production method, in particular to a pipe material drawing lubricating device and a pipe material drawing processing method. Background technique [0002] As one of the common methods of pipe preparation, the drawing process is widely used in the industrial production of copper pipes and stainless steel pipes. The equipment used in the drawing process is mainly a chain broaching machine. By installing the drawing die on the chain broaching machine , the drawing die includes the drawing outer die and the drawing core head. Compared with the traditional rolling process, the drawing process of the pipe has the following advantages: it can improve the dimensional accuracy of the outer diameter and wall thickness of the pipe, and for the smaller diameter The high-quality pipe can achieve wall-reducing stretching, improve the quality of the inner surface of the pipe, and improve the distribut...

AI Technical Summary

Problems solved by technology

The lubrication method adopted in the existing drawing process is: manually inject lubricating oil into the inside of the tube blank to be drawn, and then install the drawing core for drawing. However, this lubrication method has the following disadvantages: 1. Due to the The drawn pipe is laid horizontally during drawing, so when liquid lubricating oil is used, the lubricating oil inside the pipe to be drawn will flow along the inner wall of the pipe to be drawn to the bottom of the pipe to be drawn, causing the inner wall of the pipe to be drawn to The lubricating oil is added unevenly, and the local lubricating oil on the inner wall of the pipe blank to be drawn is missing; 2. During the drawing process, the lubricating oil cannot be continuously injected, and a large amount of lubricating oil will flow out from the tail end of the pipe to be drawn. 3. When manually injecting lubricating oil, there is a risk of scratching the surface of the inner wall of the pipe to be drawn, and the production efficiency is low; in order to solve the above technical problems, a pipe drawing lubrication device and a pipe drawing processing method are now proposed

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