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Production method of extruder screw

A production method and screw technology, which are applied in the production field of extruder screws, can solve the problems of complex processing, low productivity and high production cost, and achieve the effects of reducing costs, improving efficiency and qualification rate, and simplifying design and production.

Inactive Publication Date: 2012-07-25
NINGBO FANGLI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The design, modeling, and post-processing of the screw are relatively complicated, and the screw processed by manual intervention has a low pass rate, low productivity, and high production costs.

Method used

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  • Production method of extruder screw
  • Production method of extruder screw

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Embodiment Construction

[0018] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] The production method of a kind of extruder screw rod of the present invention is as figure 1 As shown, according to the theoretical calculation, the statistical technical data of various existing screws at home and abroad and the experience of practical test run determine the screw parameters. Include the following steps:

[0020] Step 1, obtain the accurate screw rod size;

[0021] Step 2, obtaining accurate screw clearances of each section;

[0022] Step 3, obtain the correct phase relationship of each thread;

[0023] Step 4, obtain the correct phase relationship between each thread and the spline;

[0024] Step 5, establishing a three-dimensional model of ...

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Abstract

The invention discloses a production method of an extruder screw, which comprises the following steps: step 1, acquiring the size of a screw; step 2, acquiring gaps between sections of screws; step 3, acquiring a correct phase relation of the sections of threads; step 4, acquiring a correct phase relation between each section of threads and a spline; step 5, establishing a three-dimensional model for the screw according to the acquired size of the screw, the gap between the sections of screws, the correct phase relation of the sections of threads and the correct phase relation between each section of threads and the spline; step 6, processing the three-dimensional model to determine a track that a milling cutter is processed by the screw; and step 7, machining a material to be machined on a milling machine according to the track that the milling cutter is processed by the screw so as to acquire the extruder screw. With the adoption of the production method of the extruder screw, the design and the manufacture of the screw are simpler, so that the production efficiency and the qualification ratio of the screw are improved, and the production cost of the screw is reduced.

Description

technical field [0001] The invention relates to the technical field of extruders, in particular to a production method of extruder screws. Background technique [0002] The design of the extruder screw is a very professional, theoretical and practical work. At present, domestic and foreign, according to theoretical calculations, practical test experience to determine the screw parameters, and calculate and determine the related structural parameters required for other transmissions ( Keys, splines, etc.), and then drawn into a two-dimensional engineering drawing, according to the two-dimensional engineering drawing of the screw, the method of manual intervention (pitch hanging wheel, forming milling cutter, manual correction, etc.) is used for processing on an ordinary screw milling machine. Keys and other transmission structures are processed on other machine tools. For special screws (especially meshing: variable pitch cone double, and other complex screws), CNC programmin...

Claims

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Application Information

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IPC IPC(8): B23G1/32G06F17/50
Inventor 王尚锋
Owner NINGBO FANGLI TECH
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