Method for simultaneous roll-forming of threads and splines of shaft parts

A technology for roll forming and shaft parts, which is applied to threaded products, other household appliances, household appliances, etc., can solve problems such as troublesome adjustment of various types of workpieces, production quality, processing range and application limitations, etc. Achieve the effect of improving forming quality, consistent relative position and reducing forming time

Active Publication Date: 2014-12-10
陕西格致精成智能制造有限公司
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AI Technical Summary

Problems solved by technology

However, due to the limitation of the structural principle of the plate-type thread rolling machine, there are limitations in production quality, processing technology, processing range and application, and it is troublesome to adjust multi-specification and multi-variety workpieces.

Method used

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  • Method for simultaneous roll-forming of threads and splines of shaft parts
  • Method for simultaneous roll-forming of threads and splines of shaft parts
  • Method for simultaneous roll-forming of threads and splines of shaft parts

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] The material of the workpiece 3 in this embodiment is 45 steel, and the formed part 4 has a spline part 41 and a thread part 42 at the same time.

[0021] A method for simultaneous roll forming of shaft parts with threaded splines, comprising the following steps:

[0022] Step 1, refer to figure 1 , the workpiece 3 is clamped, and the workpiece 3 is clamped by the top 1, ensuring that the axis of the workpiece 3 is on the same level as the axes of the two rolling dies 2, and the axes of the two rolling dies 2 are parallel and symmetrically distributed on both sides of the workpiece 3;

[0023] Step 2, the workpiece 3 is fed in the direction of the rolling die 2; refer to figure 2 , there is a first roll forming part 31 and a second roll forming part 32 on the workpiece 3, referring to image 3 , there is spline shape part 21 and thread shap...

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Abstract

The invention relates to a method for simultaneous roll-forming of threads and splines of shaft parts. According to the method, a workpiece is first clamped and fed toward the direction of a rolling mold, the workpiece is provided with a first roll-forming part and a second roll-forming part, the rolling mold is provided with a spline-shaped part and a thread-shaped part, the first roll-forming part of the workpiece enters into the working scope with the spline-shaped part, and splines are formed by the spline-shaped part in a rolling mode. Meanwhile, the second roll-forming part of the workpiece enters into the working scope with the thread-shaped part, and threads are formed by the thread-shaped part in a rolling mode. At last, the workpiece is clamped by a center, reversely returned and unloaded. The method integrates thread rolling and spline rolling, achieves simultaneous roll-forming of threads and splines of thread-spline-coaxial parts, reduces the time of part roll-forming and promotes the quality of formed workpieces, can ensure that the relative positions of he threads and the splines are relative stable, and has the advantages of being high in manufacturing efficiency, stable in forming quality, wide in machining range and convenient to adjust.

Description

technical field [0001] The invention belongs to the technical field of advanced material forming, and in particular relates to a method for simultaneous roll forming of threaded splines and shaft parts. Background technique [0002] Key shaft parts that transmit force and torque in automotive steering shafts, transmissions, and planetary roller screw pairs often feature both threads and splines or small modulus gears. With the rapid development of automobile and equipment manufacturing industry, the requirements and demand for the precision and performance of such parts are increasing. [0003] However, at present, the threaded spline coaxial parts in the planetary roller screw pair are mostly processed by cutting, and the threads and splines are formed separately at different times. Not only is the efficiency low, cutting the metal fibers also affects the mechanical properties of the part. For parts such as steering shafts and transmission output shafts, the existing non-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21H3/04
Inventor 张大伟赵升吨张琦
Owner 陕西格致精成智能制造有限公司
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