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Method for determining mould structure for simultaneously forming threads and splines in rolling mode

A rolling forming and thread flower technology, applied in the field of mold structure for simultaneous rolling forming of screw splines

Active Publication Date: 2015-06-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the rolling die only meets the requirements of the number of teeth, the parameters of the two rolling dies are exactly the same, and the adjustment method of the phase difference of the thread or spline rolling forming die may not necessarily be able to complete the phase of the threaded section and the spline section of the rolling die difference adjustment

Method used

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  • Method for determining mould structure for simultaneously forming threads and splines in rolling mode
  • Method for determining mould structure for simultaneously forming threads and splines in rolling mode
  • Method for determining mould structure for simultaneously forming threads and splines in rolling mode

Examples

Experimental program
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Effect test

Embodiment 1

[0057] The part 1 of the present embodiment has a spline part 11 and a thread part 12 at the same time, the number of teeth Z of the spline part 11 is 34, and the number n of the thread part 12 is 2.

[0058] Reference figure 1 , A method for determining the mold structure for simultaneous roll forming of threaded splines, including the following steps:

[0059] Step 1. Determine the number of threads in the rolling die and the number of teeth in the spline segment;

[0060] Reference figure 2 , The part 1 has both a spline part 11 and a thread part 12, the number of teeth of the spline part 11 is Z, and the number of thread heads of the thread part 12 is n; the first rolling die 2 has a first spline part with a spline shape part The key segment 21 and the first thread segment 22 having a thread-shaped portion, the number of teeth of the first spline segment 21 having a spline-shaped portion is Z 2 , The number of thread heads of the first thread section 22 with the thread-shaped po...

Embodiment 2

[0081] The part 1 of the present embodiment has a spline part 11 and a thread part 12 at the same time. The number of teeth Z of the spline part 11 is 34, and the number n of the thread part 12 is 3.

[0082] Reference figure 1 , A method for determining the mold structure for simultaneous roll forming of threaded splines, including the following steps:

[0083] Step 1. Determine the number of threads in the rolling die and the number of teeth in the spline segment;

[0084] Reference Figure 5 , The part 1 has both a spline part 11 and a thread part 12, the number of teeth of the spline part 11 is Z, and the number of thread heads of the thread part 12 is n; the first rolling die 2 has a first spline part with a spline shape part The key segment 21 and the first thread segment 22 having a thread-shaped portion, the number of teeth of the first spline segment 21 having a spline-shaped portion is Z 2 , The number of thread heads of the first thread section 22 with the thread-shaped po...

Embodiment 3

[0105] The part 1 of the present embodiment has a spline part 11 and a thread part 12 at the same time, the number of teeth Z of the spline part 11 is 33, and the number n of the thread part 12 is 2.

[0106] Reference figure 1 , A method for determining the mold structure for simultaneous roll forming of threaded splines, including the following steps:

[0107] Step 1. Determine the number of threads in the rolling die and the number of teeth in the spline segment;

[0108] Reference Picture 9 , The part 1 has both a spline part 11 and a thread part 12, the number of teeth of the spline part 11 is Z, and the number of thread heads of the thread part 12 is n; the first rolling die 2 has a first spline part with a spline shape part The key segment 21 and the first thread segment 22 having a thread-shaped portion, the number of teeth of the first spline segment 21 having a spline-shaped portion is Z 2 , The number of thread heads of the second threaded section 22 with a threaded porti...

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Abstract

Disclosed is a method for determining a mould structure for simultaneously forming threads and splines in a rolling mode. The head number of a thread section and the tooth number of a spline section of each rolling mould are determined firstly. The phase difference of the thread sections of the two rolling moulds before rolling is determined. The phase difference of the spline sections of the two rolling moulds before rolling is determined. The relationship between the phase difference of the thread sections and the phase difference of the spline sections of the rolling moulds before rolling is determined. The mould structure for simultaneously forming the threads and the splines in the rolling mode is determined according to the phase difference of the thread sections and the phase difference of the spline sections of the rolling moulds before rolling and parameters of a part. Finally, the phase differences of the two rolling moulds are adjusted according to the rolling mould structure according to the rolling mould structure. The rolling mould structure is determined according part forming parameters, adjustment of the phase difference of the thread sections and the phase difference of the spline sections of the moulds before rolling forming is achieved, and the forming quality requirements of workpieces are met.

Description

Technical field [0001] The invention belongs to the technical field of advanced material forming, and in particular relates to a method for determining a mold structure for simultaneous roll forming of a threaded spline. Background technique [0002] Thread and spline coaxial parts are widely used in steering systems, transmissions, and planetary roller wire pairs. They are core transmission load-bearing parts that transmit system power and carry complex torque, and play a key role in the normal operation of equipment. With the rapid development of the automobile industry and equipment manufacturing industry, especially under high-speed, heavy-duty, and harsh working conditions, the demand for high-performance, high-precision shaft parts with threads and splines is increasing. [0003] If the threads and splines can be rolled synchronously, the time for forming parts can be effectively reduced. At the same time, the engagement of the thread segments during the forming process can p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21H3/02
Inventor 张大伟赵升吨吴士波
Owner XI AN JIAOTONG UNIV