A gear unilateral forming machining method combined with a custom tool and a specific path

A technology of forming processing and single gear, which is applied in the direction of belt/chain/gear, gear teeth, components with teeth, etc., can solve the problems of high tool material cost, large tool diameter, sacrifice time cost, etc., and achieve low cost , The effect of small knife output and low material consumption

Active Publication Date: 2022-08-02
NANJING TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to ensure the machining accuracy, the time cost is greatly sacrificed
However, the method of forming finger-shaped milling cutters, especially for gears with wide tooth spaces, has the disadvantages of too large cutter diameter and high cost of cutter materials.

Method used

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  • A gear unilateral forming machining method combined with a custom tool and a specific path
  • A gear unilateral forming machining method combined with a custom tool and a specific path
  • A gear unilateral forming machining method combined with a custom tool and a specific path

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Experimental program
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Effect test

Embodiment

[0043] A method for unilateral forming of involute helical gears and herringbone teeth combined with a customized tool and a specific path, suitable for applications such as figure 1 machine shown.

[0044] The specific implementation steps are as follows:

[0045] Establish the gear end face coordinate system S (O-X, Y), such as figure 2 shown.

[0046] According to the gear parameters, calculate the involute contour of the gear end face and the tangent vector at the index circle.

[0047] Calculate the angle between the tangent vector and the X-axis, which is the C-axis rotation angle at the machining position relative to the theoretically calculated position.

[0048] The coordinates (x, y) of point M at the involute indexing circle of the gear end face are:

[0049]

[0050] where r b is the radius of the base circle, σ 0 is the half angle of the tooth slot, and u is the rolling angle at the index circle;

[0051] The tangent vector at the index circle is:

[0...

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PUM

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Abstract

The invention provides a gear unilateral forming processing method in which a customized tool is combined with a specific path. , Z, C four-axis machine tool, using the principle of space surface meshing to design custom tools, design the corresponding specific processing path, so as to achieve unilateral gear forming processing. According to the characteristics of the involute helical gear itself, the invention rotates the C-axis, and selects the position where the tangent at the index circle is parallel to the X-axis as the processing position; determines the offset position of the tool axis in the Y direction, determines the tool radius, and establishes the tool coordinate system; The cross-sectional profile of the tool shaft is obtained by the meshing principle of the space surface; according to the characteristics of the helical surface of the involute helical gear, the processing path is planned, so as to realize the processing; the invention saves the cost of the tool material, realizes the unilateral forming processing, and improves the processing efficiency. .

Description

technical field [0001] The invention relates to the fields of numerical control technology, digital manufacturing discipline and advanced manufacturing technology, in particular to a unilateral forming processing method for involute helical gears and herringbone teeth combining a customized tool with a specific path, in particular to a method for meshing with a space curved surface The method of designing a custom tool, and the CNC machining method based on the X, Y, Z, C four-axis machine tool to rotate the C axis, offset the Y axis, and perform helical motion to realize the unilateral forming of the helical gear. Background technique [0002] With the technological progress in aviation, aerospace, automobile, wind energy and other fields, gear cutting processing technology is developing in the direction of high efficiency, high precision, high flexibility, high reliability and environmental protection, and the demand for new gear processing principles and technologies Rapi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23F1/06
Inventor 孙小敏洪荣晶
Owner NANJING TECH UNIV
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