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Patternless casting digital partition machining method

A cutting and die-casting technology, applied in the directions of casting mold composition, casting mold, casting molding equipment, etc., can solve problems such as difficulty in machining large parts, and achieve the effect of avoiding dimensional deviation, expanding the processing range, and avoiding positioning difficulties.

Inactive Publication Date: 2013-06-19
中国机械总院集团江苏分院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention relates to a digital divisional cutting method of a moldless mold, which mainly solves the problem that the current moldless mold forming machine is difficult to process large parts

Method used

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  • Patternless casting digital partition machining method
  • Patternless casting digital partition machining method
  • Patternless casting digital partition machining method

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Experimental program
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Effect test

Embodiment 1

[0015] The platform size of a certain type of moldless casting machine is 2000×1500 mm, and the processing range is 1500×1000×600 mm. figure 1 As shown, the traditional solution is block processing, and the problem brought by block processing is that positioning is difficult, which affects processing accuracy and is prone to waste. The invention proposes a partition processing method, through remodeling, adopts the curve partition method, avoids damage to the round hole, compiles the program code, and gives priority to processing figure 2 Partition the part shown, then cut the rest.

Embodiment 2

[0017] The platform size of a certain type of moldless casting machine is 2000×1500 mm, and the processing range is 1500×1000×600 mm. The shape of a certain part is as follows image 3 As shown, the size is 1700×900×300 mm, and the length exceeds the processing range of the molding machine. Using the present invention, a partition processing method is proposed. Because the size of the elliptical cylinder in the sand mold is large, it cannot be programmed and processed at one time. For small semi-cylindrical and large semi-cylindrical, priority processing Figure 4 Partition as shown, that is, the partition where the large half of the cylinder is located, and then cut the rest.

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Abstract

The invention provides a patternless casting digital partition machining method aiming at the sand mold processing characteristics of a patternless casting forming machine and belongs to the technical field of numerical control machining. The method is based on a rapid patternless casting forming method, because the machining range of the patternless casting forming machine is smaller than the platform size, the platform area can not be fully utilized, the partition machining method is provided aiming at the machining size limitation of the patternless casting forming machine; and for large-size parts, all parts within the platform size range of the patternless casting forming machine can be machined according to the part shape characteristics by employing a twice or multi-time machining mode, so that the machining range of the forming machine is enlarged, and the defects of positioning difficulty, dimensional deviation and the like generated by the partition machining are overcome.

Description

technical field [0001] The invention relates to a digital partition cutting processing method of a moldless casting mold, which belongs to the technical field of numerical control processing. Background technique [0002] At present, the demand for single-piece and small-batch castings is increasing, and among the three production methods of casting molds (traditional wood mold sand mold manufacturing, rapid prototyping sand mold manufacturing and sand mold manufacturing based on moldless mold forming machines), wood mold sand mold manufacturing It is suitable for the production of large quantities of castings, and the rapid forming sand mold manufacturing and the sand mold manufacturing based on the moldless mold forming machine are more suitable for the production of single pieces and small batches of castings. However, the sand molds manufactured by rapid prototyping technology have the following disadvantages: the layer-by-layer processing efficiency is low, and it is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/00B22C23/00
Inventor 单忠德徐先宜庄百亮陈文刚王超义王江南
Owner 中国机械总院集团江苏分院有限公司