Method for flexible design of spiral groove skew rolling roller

Abstract

The invention belongs to the field of rotation plastic processing and discloses a method for flexible design of a spiral groove skew rolling roller. The method is characterized by comprising the steps of firstly, setting and defining relevant parameters of a roller groove in 3D modeling software; secondly, establishing a cylinder solid feature through a stretching command with the base circle of the roller serving as the cross section outline; thirdly, establishing an initial flange spiral trajectory and an outline cross section, and establishing an initial spiral flange on the solid cylindrical surface with the screw pitch serving as the basic lead and the height serving as the radius of the portion, with the largest cross section, of a rolled piece by scanning the initial flange outline cross section along the spiral trajectory; fourthly, obtaining flange heights at different groove positions and achieving the purpose that the height of the flange of the roller changes according to a designed change rule; fifthly, achieving the variable-lead geometrical transformation feature of the spiral groove of the roller; sixthly, finishing all the three-dimensional design of the skew rolling roller. By the adoption of the method, a 3D solid model of the roller can be generated quickly and accurately, flexible design of the roller is achieved, and design efficiency and accuracy are improved remarkably.

Description

technical field [0001] The invention belongs to the field of rotary plastic processing, and in particular relates to a flexible design method for spiral pass skew rolling rolls of spherical, cylindrical or conical rotary parts. Background technique [0002] Spiral pass cross rolling (referred to as cross rolling) is an advanced rotary plastic forming technology for spherical, cylindrical, conical and other rotary parts. Compared with traditional forging, casting and turning processes, it has high quality, energy saving, material saving and high efficiency. It is widely used in the forming and manufacturing of rotating parts such as ball milling steel balls, bearing steel balls and rollers. In spiral pass cross rolling, accurate roll design is an important guarantee for roll manufacturing and precision of rolled products. However, due to the complex surface of the roll die pass, which is a helical pass with variable lead and variable height, there is no efficient and accurat...

AI Technical Summary

Problems solved by technology

However, due to the complex surface of the roll die pass, which is a spiral pass with variable lead and variable height, there is no efficient and accurate design method at present.

The traditional design is to use programming to calculate the data points of the characteristic curve on the pass surface, and then import them into the 3D software to fit each characteristic curve and surface in turn, and finally materialize the roll surface. This process is cumbersome and complicated. Reduced design accuracy

In addition, when designing rolls of different sizes and specifications, or needing to adjust and correct the structural parameters of the roll pass, the traditional method has to be re-started one by one, which consumes a lot of design time and effort

Therefore, the existing spiral pass cross rolling roll design process is complicated, low in efficiency, and poor in precision, which does not conform to the modern design concept, nor can it better meet the design requirements of the spiral pass cross rolling process.

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