CN103157764A - Patternless casting digital partition machining method - Google Patents

Patternless casting digital partition machining method Download PDF

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Publication number
CN103157764A
CN103157764A CN2013101257738A CN201310125773A CN103157764A CN 103157764 A CN103157764 A CN 103157764A CN 2013101257738 A CN2013101257738 A CN 2013101257738A CN 201310125773 A CN201310125773 A CN 201310125773A CN 103157764 A CN103157764 A CN 103157764A
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CN
China
Prior art keywords
forming machine
machining
die
processing
casting type
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Application number
CN2013101257738A
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Chinese (zh)
Inventor
单忠德
徐先宜
庄百亮
陈文刚
王超义
王江南
Original Assignee
机械科学研究总院江苏分院
机械科学研究总院先进制造技术研究中心
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Application filed by 机械科学研究总院江苏分院, 机械科学研究总院先进制造技术研究中心 filed Critical 机械科学研究总院江苏分院
Priority to CN2013101257738A priority Critical patent/CN103157764A/en
Publication of CN103157764A publication Critical patent/CN103157764A/en

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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

A kind of digitlization using zone-division LASIK processing method of non die-casting type

Technical field

The present invention relates to a kind of digitlization using zone-division LASIK processing method of non die-casting type, belong to the Computerized Numerical Control processing technology field.

Background technology

At present, the demand of single-piece, small lot foundry goods increases day by day, and in three kinds of modes of production of casting mold (the Traditional Wood model sand mold is made, the Quick-forming sand mold is made and based on the sand mold manufacturing of non die-casting type forming machine), the manufacturing of wooden model sand mold is applicable to castings production in enormous quantities, and the Quick-forming sand mold is made and relatively is fit to single-piece, small lot castings production based on the sand mold manufacturing of non die-casting type forming machine.And the sand mold that is beneficial to the RP technique manufacturing has the following disadvantages: successively working (machining) efficiency is low, be not suitable for the processing of heavy castings, and binding agent or laser sintered sand mold is bonded together form the closely knit casting mold of inner surface, gas permeability is relatively poor, foundry goods easily produces defective, in addition, easily produce the step effect when the processed complex profile.Adopting the non die-casting type forming machine to carry out the sand mold cutting has the following disadvantages: during the machining large foundry goods, or adopt large-scale non die-casting type forming machine processing, or adopt partitioned mode processing, increased cost, and piecemeal processing location difficulty, dimensional discrepancy easily appears.

For small-sized non die-casting type forming machine can't the machining large metallic element a difficult problem, the present invention proposes a kind of digitlization using zone-division LASIK processing method of non die-casting type, can effectively solve the equipment processing dimension less than the problem of accessory size, increased the range of work of non die-casting type forming machine, effectively saved cost, and reduced piecemeal quantity, promoted the success rate of mo(u)lded piece, for enterprise's machining large foundry goods provides new efficient solution.

Summary of the invention

The present invention relates to a kind of digitlization using zone-division LASIK processing method of non die-casting type, mainly solve the problem that present non die-casting type forming machine is difficult to the machining large part.

The inventive method is based on the non die-casting type quick forming method, because the range of work of non die-casting type forming machine is little a lot of than platform size, can't take full advantage of the platform area, namely the processing dimension for the non die-casting type forming machine limits, the using zone-division LASIK processing method is proposed, to large-scale part, according to the part shape characteristics, adopt twice or processing mode repeatedly.

A kind of digitlization using zone-division LASIK processing method of non die-casting type, adopt non die-casting type forming machine processing sand mold, due to the processing dimension scope of forming machine much smaller than platform size, it is the range of work less of non die-casting type forming machine, put forward the methods of the present invention is characterised in that, in non die-casting type forming machine platform size, length direction and width are surpassed the heavy parts of the forming machine range of work, adopt the using zone-division LASIK processing mode.It is characterized in that, in cutting process, area principle is: adopt the smallest partition number, avoid splitting circular hole and cylinder.For better solving the problem that subregion runs into, in the time of namely can't avoiding splitting circular hole or cylinder, circular hole and cylinder are split as small semicircle and large semicircle when subregion, preferably process small semicircle circular hole and subregion corresponding to large semicircle cylinder.

The invention has the advantages that, adopt the inventive method processing sand mold, the range of work of the forming machine that can enlarge can be processed all parts in non die-casting type forming machine platform size scope, and has effectively avoided the defectives such as location difficulty that piecemeal processing produces and dimensional discrepancy.

Figure of description

Fig. 1. monoblock sand mold cutting schematic diagram;

Fig. 2. sand mold using zone-division LASIK schematic diagram;

Fig. 3. the External Shape schematic diagram;

Fig. 4. sand mold using zone-division LASIK schematic diagram.

The specific embodiment

Below by embodiment, the present invention is carried out concrete description; be necessary to be pointed out that at this present embodiment only is used for the present invention is further illustrated; can not be interpreted as limiting the scope of the invention, this art skilled person can make some nonessential improvement and adjustment according to the invention described above content.

Embodiment 1

Certain model non die-casting type forming machine platform size is 2000 * 1500 mm, the range of work is 1500 * 1000 * 600 mm, certain spare part outside measurement is 1800 * 800 * 200 mm, surpassed the forming machine range of work on length, shown in Figure 1, traditional solution is piecemeal processing, and the problem that piecemeal processing brings is location difficulty, affect machining accuracy, waste product easily occurs.The present invention proposes a kind of subregion processing method, by modeling again, adopts the curve partitioned mode, avoids destroying circular hole, and the code that programs is preferentially processed part subregion shown in Figure 2, then cuts remainder.

Embodiment 2

Certain model non die-casting type forming machine platform size is 2000 * 1500 mm, the range of work is 1500 * 1000 * 600 mm, certain External Shape as shown in Figure 3, be of a size of 1700 * 900 * 300 mm, surpassed the forming machine range of work on length, utilize the present invention to propose a kind of subregion processing method, because the cylindroid size in sand mold is larger, can't process by one-time programming, cylindroid is divided into smaller part cylinder and more than half cylinder, preferential processing part subregion shown in Figure 4, namely more than half cylinder place subregion, then cut remainder.

Claims (3)

1. the digitlization using zone-division LASIK processing method of a non die-casting type, adopt non die-casting type forming machine processing sand mold, it is characterized in that, in non die-casting type forming machine platform size, the large scale sand mo(u)ld that length direction and width is surpassed the forming machine range of work adopts the using zone-division LASIK processing mode.
2. the digitlization using zone-division LASIK processing method of a kind of non die-casting type according to claim 1, is characterized in that, in cutting process, the quantity of subregion is the least possible, and subregion avoids destroying shape and the structures such as circular hole, cylinder as far as possible.
3. the digitlization using zone-division LASIK processing method of a kind of non die-casting type according to claim 1, it is characterized in that, in cutting process, in the time of can't avoiding destroying the shapes such as circular hole, cylinder and structure during subregion, circular hole and cylinder are split as small semicircle and large semicircle, preferably process small semicircle circular hole and subregion corresponding to large semicircle cylinder.
CN2013101257738A 2013-04-12 2013-04-12 Patternless casting digital partition machining method CN103157764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013101257738A CN103157764A (en) 2013-04-12 2013-04-12 Patternless casting digital partition machining method

Publications (1)

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CN103157764A true CN103157764A (en) 2013-06-19

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* Cited by examiner, † Cited by third party
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CN104889321A (en) * 2015-05-28 2015-09-09 机械科学研究总院先进制造技术研究中心 Method for machining sand mold through multi-robot linkage
CN105689641A (en) * 2015-12-24 2016-06-22 机械科学研究总院先进制造技术研究中心 Digital moldless casting island

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CN104889321A (en) * 2015-05-28 2015-09-09 机械科学研究总院先进制造技术研究中心 Method for machining sand mold through multi-robot linkage
CN105689641A (en) * 2015-12-24 2016-06-22 机械科学研究总院先进制造技术研究中心 Digital moldless casting island

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Application publication date: 20130619