CN112238272A - Special-shaped thin-wall fan-shaped part machining control process - Google Patents
Special-shaped thin-wall fan-shaped part machining control process Download PDFInfo
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- CN112238272A CN112238272A CN202011120160.1A CN202011120160A CN112238272A CN 112238272 A CN112238272 A CN 112238272A CN 202011120160 A CN202011120160 A CN 202011120160A CN 112238272 A CN112238272 A CN 112238272A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention belongs to the technical field of machining, and discloses a machining control process for special-shaped thin-wall fan-shaped parts, which aims to solve the problem of low machining size precision of the special-shaped thin-wall parts and comprises the following steps: taking the circle center of the integral workpiece as a cutting starting point, and performing linear cutting on the integral workpiece from inside to outside in the radial direction; stopping radial cutting after the cutting tool is away from the outer edge of the integral workpiece by a certain distance, and cutting along the circumferential direction of the integral workpiece; performing linear cutting on the whole workpiece from outside to inside in the radial direction, returning to the cutting starting point, and forming a triangular cavity and a connecting rib between two adjacent fan-shaped cavities on the whole workpiece; repeating the above steps one less number of times than the number of the fan-shaped cavities on the whole workpiece; separating the middle of a plurality of connecting ribs formed on the integral workpiece to form a plurality of fan-like semi-finished products; and cutting the connecting rib excess materials on the two sides of the fan-shaped semi-finished products to form fan-shaped part finished products. The process can increase the number of qualified products from 25% to 100%, and improve the yield of finished products.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a machining control process for a special-shaped thin-wall fan-shaped part.
Background
The processing of the special-shaped thin-wall parts is to adopt a slow-moving-wire machine tool to process the appearance through wire cutting, and the traditional process is to clamp an integral workpiece, process a straight edge of a lightening hole on the integral workpiece through a correction milling mode, and start processing by taking the outer edge of the integral workpiece as a feed point, so that one integral workpiece is processed intermittently in sequence to obtain more than two special-shaped thin-wall parts one by one, such as a special-shaped thin-wall sector gear finished product shown in figure 1.
However, the thickness h of the ribs on the two sides in the external dimension of the special-shaped thin-wall sector gear part obtained in the machining process has a deviation, namely the thickness tolerance of the ribs on the two sides of the first cut part from the feed point is within the range of h +/-0.1, and a certain out-of-tolerance will occur on the subsequent second part, but the out-of-tolerance is relatively small until the out-of-tolerance of the last cut part is the most serious. Therefore, only one of the plurality of special-shaped thin-wall sector gear parts processed by the whole workpiece can completely meet the size requirement, and the other parts have certain out-of-tolerance, and the out-of-tolerance phenomenon is irregular, so that more waste products and fewer qualified products are caused.
Disclosure of Invention
In view of this, the invention aims to provide a processing control process for a special-shaped thin-wall fan-shaped part, which aims to solve the problem of low processing dimensional precision of the special-shaped thin-wall part.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a processing control process of a special-shaped thin-wall fan-shaped part, which comprises the following steps:
b1, taking the circle center of the integral workpiece as a cutting starting point, and performing linear cutting on the integral workpiece from inside to outside in the radial direction;
b2, stopping radial cutting after a certain distance is formed between the outer edge of the integral workpiece and the outer edge of the integral workpiece, and cutting along the circumferential direction of the integral workpiece;
b3, performing linear cutting on the whole workpiece from outside to inside in the radial direction, returning to the cutting starting point, and forming a triangular cavity and a connecting rib between two adjacent fan-shaped cavities on the whole workpiece;
b4, repeating the steps B1-B3 by the times of one less than the number of the fan-shaped cavities on the whole workpiece;
b5, performing intermediate separation on a plurality of connecting ribs formed on the integral workpiece to form a plurality of fan-shaped semi-finished products;
and B6, cutting the connecting rib residual materials on two sides of the fan-shaped semi-finished products to form fan-shaped part finished products.
Preferably, the predetermined distance in step B2 is 1 to 3 mm.
Preferably, the cutting along the circumferential direction of the whole workpiece in step B2 is a straight cutting or an arc cutting.
Preferably, the sector piece finished product is a sector gear.
Preferably, the cutting is slow wire cutting.
The invention has the beneficial effects that: the processing control process for the special-shaped thin-wall fan-shaped part changes single piece forming processing into multi-piece semi-finished product processing, keeps the connecting part of the appearance of the whole workpiece, and finally processes the appearance of the semi-finished product to obtain the finished product part, can increase the number of qualified products from 25% to 100%, so that the raw materials of the whole workpiece can be fully utilized, the production cost is reduced, and the production profit is maximized. Compared with the traditional processing technology, the processing control technology is simple, convenient to operate, low in cost and suitable for popularization and use, and has strong reliability.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of the profile structure of the special-shaped thin-walled fan-shaped part of the present invention, which is a plan view on the top and a front view on the bottom.
FIG. 2 is a schematic diagram of a cutting track for machining control of the special-shaped thin-wall sector-shaped part.
FIG. 3 is a schematic structural diagram of a semi-finished product obtained by cutting the middle connecting rib by the wire-electrode cutting of the special-shaped thin-wall fan-shaped part.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
As shown in fig. 2-3, the machining control process for the special-shaped thin-wall fan-shaped part in the embodiment includes: firstly, taking the area between two adjacent pressure reducing holes of a single fan-shaped cavity on the whole workpiece as a clamping part for clamping the whole workpiece, and correcting and milling the straight edges of the lightening holes on the whole workpiece; then, taking the circle center of the integral workpiece as a cutting starting point, and cutting the integral workpiece from inside to outside in the radial direction by adopting a slow-moving wire to perform linear cutting; stopping radial cutting after the distance of 2mm from the outer edge of the integral workpiece, and continuously performing arc-shaped or linear cutting by adopting slow-speed wire cutting along the circumferential direction of the integral workpiece; then, linear cutting is carried out on the whole workpiece from outside to inside in the radial direction by adopting a slow-moving wire cutting method, and then the workpiece returns to the cutting starting point, and a triangular cavity (the thick solid line in figure 2 is the cutting track of the wire cutting machine) and a connecting rib are formed between two adjacent fan-shaped cavities on the whole workpiece; repeating the steps by times which are one less than the number of the fan-shaped cavities on the integral workpiece, namely, in the embodiment, four fan-shaped cavities are arranged on one integral workpiece, the repeated times are three times, and four triangular-like cavities and connecting ribs which are arranged in a mirror symmetry mode are formed in total; performing middle separation of linear cutting on the four connecting ribs formed on the integral workpiece to form four fan-like semi-finished products; and performing line cutting and trimming on the connecting rib excess materials on the two sides of the four fan-shaped semi-finished products to form four fan-shaped part finished products. The machining mode has certain reference significance for machining the tooth part of the special-shaped thin-wall part, namely the internal cavity is machined in a linear cutting mode, the overall appearance is kept, and machining is not conducted for the moment. After the whole inner cavity is machined, the process of machining the shape is carried out so as to ensure that the shape is not changed in the process of machining the inner cavity. Compared with the traditional process that a single piece is changed into a plurality of semi-finished products, the connecting part of the appearance of the whole workpiece is reserved, and the appearance of the semi-finished product is processed to obtain a finished part, the number of qualified products can be increased from 25% to 100%, so that the raw materials of the whole workpiece can be fully utilized, the production cost is reduced, and the production profit is maximized. The method has the advantages of simple process, high reliability, convenient operation and low cost, and is suitable for popularization and application.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (5)
1. The machining control process of the special-shaped thin-wall fan-shaped part is characterized by comprising the following steps of:
b1, taking the circle center of the integral workpiece as a cutting starting point, and performing linear cutting on the integral workpiece from inside to outside in the radial direction;
b2, stopping radial cutting after a certain distance is formed between the outer edge of the integral workpiece and the outer edge of the integral workpiece, and cutting along the circumferential direction of the integral workpiece;
b3, performing linear cutting on the whole workpiece from outside to inside in the radial direction, returning to the cutting starting point, and forming a triangular cavity and a connecting rib between two adjacent fan-shaped cavities on the whole workpiece;
b4, repeating the steps B1-B3 by the times of one less than the number of the fan-shaped cavities on the whole workpiece;
b5, performing intermediate separation on a plurality of connecting ribs formed on the integral workpiece to form a plurality of fan-shaped semi-finished products;
and B6, cutting the connecting rib residual materials on two sides of the fan-shaped semi-finished products to form fan-shaped part finished products.
2. The machining control process for the special-shaped thin-wall fan-shaped part according to claim 1, wherein the determined distance in the step B2 is 1-3 mm.
3. The machining control process for the fan-shaped parts with the special-shaped thin walls as claimed in claim 1, wherein the cutting in the step B2 along the circumferential direction of the whole workpiece is a straight cutting or an arc cutting.
4. The machining control process of the special-shaped thin-wall fan-shaped part according to claim 1, wherein the finished fan-shaped part is a fan-shaped gear.
5. The machining control process for the special-shaped thin-wall fan-shaped part according to claim 1, characterized in that the cutting is performed by slow-wire cutting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011120160.1A CN112238272B (en) | 2020-10-19 | 2020-10-19 | Machining control process for special-shaped thin-wall fan-shaped part |
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| CN202011120160.1A CN112238272B (en) | 2020-10-19 | 2020-10-19 | Machining control process for special-shaped thin-wall fan-shaped part |
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| CN112238272A true CN112238272A (en) | 2021-01-19 |
| CN112238272B CN112238272B (en) | 2023-05-02 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU648369A1 (en) * | 1972-12-22 | 1979-02-25 | Предприятие П/Я Р-6760 | Apparatus for electrochemical rounding of gear edges |
| CN101497144A (en) * | 2009-02-27 | 2009-08-05 | 江苏万工科技集团有限公司 | Machining method of sector part with hole |
| CN102554292A (en) * | 2010-12-23 | 2012-07-11 | 宁波江丰电子材料有限公司 | Target machining tool |
| CN103506721A (en) * | 2013-09-29 | 2014-01-15 | 青岛元通机械有限公司 | Wire-electrode cutting machining method and device for ring-shaped workpieces |
| CN205110992U (en) * | 2015-11-20 | 2016-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Anchor clamps are cut off to fan -shaped section wire -electrode cutting of t -shaped plate series |
| CN208357956U (en) * | 2018-04-12 | 2019-01-11 | 东莞市加穗精密夹具有限公司 | A kind of strength locating plate |
| CN111774677A (en) * | 2020-07-24 | 2020-10-16 | 四川航天烽火伺服控制技术有限公司 | Machining method of thin-wall part |
-
2020
- 2020-10-19 CN CN202011120160.1A patent/CN112238272B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU648369A1 (en) * | 1972-12-22 | 1979-02-25 | Предприятие П/Я Р-6760 | Apparatus for electrochemical rounding of gear edges |
| CN101497144A (en) * | 2009-02-27 | 2009-08-05 | 江苏万工科技集团有限公司 | Machining method of sector part with hole |
| CN102554292A (en) * | 2010-12-23 | 2012-07-11 | 宁波江丰电子材料有限公司 | Target machining tool |
| CN103506721A (en) * | 2013-09-29 | 2014-01-15 | 青岛元通机械有限公司 | Wire-electrode cutting machining method and device for ring-shaped workpieces |
| CN205110992U (en) * | 2015-11-20 | 2016-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Anchor clamps are cut off to fan -shaped section wire -electrode cutting of t -shaped plate series |
| CN208357956U (en) * | 2018-04-12 | 2019-01-11 | 东莞市加穗精密夹具有限公司 | A kind of strength locating plate |
| CN111774677A (en) * | 2020-07-24 | 2020-10-16 | 四川航天烽火伺服控制技术有限公司 | Machining method of thin-wall part |
Non-Patent Citations (1)
| Title |
|---|
| 王华龙等: "扇形齿轮加工工艺", 《机械工人.冷加工》 * |
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