Method for broaching ultra-deep inner hole of seat tube of cotton-picking head of cotton picker

A processing method and cotton picking head technology, which is applied to metal processing equipment, broaching machines, broaching devices, etc., can solve problems such as inability to lubricate, low roughness, and broken broaches, and achieve high geometric precision and simple process steps , to ensure the effect of smooth operation

Inactive Publication Date: 2012-09-19
XINJIANG ZHONGSHOU AGRI & ANIMAL HUSBANDRY MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The difference between the process scheme of the present invention and the traditional broaching process is that: the traditional broaching process cannot solve the

Method used

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  • Method for broaching ultra-deep inner hole of seat tube of cotton-picking head of cotton picker
  • Method for broaching ultra-deep inner hole of seat tube of cotton-picking head of cotton picker
  • Method for broaching ultra-deep inner hole of seat tube of cotton-picking head of cotton picker

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Example Embodiment

[0013] A method for broaching an ultra-deep inner hole of a seat tube of a cotton picking head of a cotton picking machine, the process steps are as follows:

[0014] (1) The seat tube blank is extruded by an extruder, the length-diameter ratio of the seat tube is 20-60, the diameter of the inner hole of the seat tube is φ27.7±0.1mm, and the coaxiality between the inner hole of the seat tube and the shape of the seat tube is less than 0.1;

[0015] (2) Milling the end face: Use a milling machine to mill the end faces on both sides of the seat tube to ensure that the end face is perpendicular to the center line of the seat tube shape as the reference;

[0016] (3) Broaching: such as figure 1 , figure 2 As shown, a broaching fixture is fixedly installed on the broaching machine 4 of the model L6120. The broaching fixture includes a horizontal base, and a V-shaped positioning seat arranged at an interval is vertically fixed on the front and rear sides of the horizontal base. ...

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Abstract

The invention discloses a method for broaching an ultra-deep inner hole of a seat tube of a cotton-picking head of a cotton picker. The method comprises the following steps: (1) extruding and molding a seat tube blank by using an extruding machine, wherein a length diameter ratio of the seat tube is 20-60 and the diameter of the inner hole of the seat tube is phi27.7+/-0.1mm; (2) milling an end face of the seat tube; and (3) broaching: while broaching, horizontally placing the seat tube on two positioning bases of a broaching clamp, respectively clamping two side parts of the seat tube by using clamping rods, causing axis of the seat tube to be consistent with the axis of a broaching tool, and broaching by using a circular hole broaching tool: roughly broaching the inner hole to be phi27.95mm at a roughly broaching speed of 5 meters per minute, and then finely broaching the inner hole to be phi28+/-0.026mm at a finely broaching speed of 1.8 meters per minute, wherein the feeding amount is 0.015mm and the CUT COOL7920 cutting liquid with a 5% mass percent concentration is selected as an emulsion. The processing steps are simple and practicable; the ultra-deep inner hole of the seat tube of the cotton-picking head is effectively processed according to the method; and the processed inner hole is high in geometric dimension precision and is beneficial to the smooth running of the cotton picker.

Description

technical field [0001] The invention relates to a mechanical broaching processing method of a workpiece, in particular to a broaching processing method for an ultra-deep inner hole of a cotton picker seat tube of a cotton picker. Background technique [0002] The cotton picking head is the core working part of the cotton picking machine. At present, domestic manufacturers of complete machines rely on imports. Only a few domestic manufacturers are also developing cotton picking heads, but they have not succeeded. One of the important factors is the cotton picking machine. The ultra-deep inner hole processing of the seat tube of the head can not always meet the design requirements. The diameter of the inner hole is less than 30mm, and the length-to-diameter ratio reaches 30. In the previous production process, deep hole drilling or boring was used to process the ultra-deep inner hole in the seat tube. As a result, the geometrical size, roundness, straightness and other geometr...

Claims

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Application Information

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IPC IPC(8): B23D41/06B23D41/00
Inventor 吕建文李林
Owner XINJIANG ZHONGSHOU AGRI & ANIMAL HUSBANDRY MACHINERY CO LTD
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