CN112238272B - Machining control process for special-shaped thin-wall fan-shaped part - Google Patents
Machining control process for special-shaped thin-wall fan-shaped part Download PDFInfo
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- CN112238272B CN112238272B CN202011120160.1A CN202011120160A CN112238272B CN 112238272 B CN112238272 B CN 112238272B CN 202011120160 A CN202011120160 A CN 202011120160A CN 112238272 B CN112238272 B CN 112238272B
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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 a special-shaped thin-wall fan-shaped part, which aims to solve the problem of low machining dimensional accuracy of the special-shaped thin-wall fan-shaped part, and comprises the following steps: taking the circle center of the integral workpiece as a cutting starting point, and performing linear cutting on the radial direction of the integral workpiece from inside to outside; stopping radial cutting after a certain distance is formed between the radial cutting and the outer edge of the integral workpiece, and cutting along the circumferential direction of the integral workpiece; then, linearly cutting the integral workpiece from outside to inside in the radial direction, returning to a cutting starting point, and forming a triangular cavity and a connecting rib between two adjacent fan-shaped cavities on the integral workpiece; repeating the steps one less than the number of fan-shaped cavities on the unitary workpiece; intermediate separation is carried out on a plurality of connecting ribs formed on the integral workpiece so as to form a plurality of fan-like semi-finished products; and cutting the connection rib surplus materials on two sides of the fan-like semi-finished products to form fan-like part finished products. The process can increase the number of qualified products from 25% to 100%, and improves 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 special-shaped thin-wall part is machined by adopting a slow wire-moving machine tool through linear cutting, the traditional process is to clamp the whole workpiece, then correct and mill the straight edge of a lightening hole on the whole workpiece, and start machining by taking the outer edge of the whole workpiece as a feed point, so that more than two special-shaped thin-wall parts are obtained one by intermittently machining one whole workpiece, such as the special-shaped thin-wall sector gear finished product shown in fig. 1.
However, the thicknesses h of the two side ribs in the external dimensions of the special-shaped thin-wall sector gear part obtained in the processing have deviation, namely, the tolerance of the thicknesses of the two side ribs of the first cut part from the feed point is within the range of h+/-0.1, and the subsequent second part has certain out-of-tolerance, but the out-of-tolerance is relatively less 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 machined by one integral workpiece can completely ensure 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 the above, 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 accuracy of the special-shaped thin-wall fan-shaped part.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a processing control process of a special-shaped thin-wall fan-shaped part, which comprises the following steps of:
b1, taking the circle center of the integral workpiece as a cutting starting point, and performing linear cutting on the radial direction of the integral workpiece from inside to outside;
b2, stopping radial cutting after a preset distance is reserved between the outer edge of the integral workpiece and the periphery of the integral workpiece, and cutting along the periphery of the integral workpiece;
b3, linearly cutting the integral workpiece from outside to inside in the radial direction, returning to a cutting start point, and forming a triangular cavity and a connecting rib between two adjacent fan-shaped cavities on the integral workpiece;
b4, repeating the steps B1-B3 one times less than the number of the fan-shaped cavities on the whole workpiece;
b5, middle separation is carried out on a plurality of connecting ribs formed on the integral workpiece so as to form a plurality of fan-like semi-finished products;
and B6, cutting the connection rib surplus materials on two sides of the fan-like semi-finished products to form fan-like part finished products.
Preferably, the distance specified in step B2 is 1 to 3 mm.
Preferably, the cutting is made in step B2 as a straight cut or an arc cut along the entire workpiece circumference.
Preferably, the finished sector part is a sector gear.
Preferably, the cutting is performed by slow wire cutting.
The beneficial effects of the invention are as follows: the processing control process of the special-shaped thin-wall fan-shaped part changes the single-piece forming processing into the processing of a plurality of semi-finished products, reserves the connecting part of the appearance of the whole workpiece, and finally processes the appearance of the semi-finished products to obtain the finished product part, so that the number of qualified products can be increased from 25% to 100%, 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, strong in reliability, convenient to operate, low in cost and suitable for popularization and use.
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 objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of the outline structure of the special-shaped thin-wall fan-shaped part, wherein the upper part is a plan view, and the lower part is a front view.
Fig. 2 is a schematic diagram of a cutting track of the processing control of the special-shaped thin-wall fan-shaped part.
Fig. 3 is a schematic diagram of a semi-finished product structure of the special-shaped thin-wall fan-shaped part after the middle connecting rib is cut by linear cutting.
Detailed Description
The invention is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated 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 processing control process for the special-shaped thin-wall fan-shaped part in the embodiment includes: firstly, taking a region between two adjacent decompression holes of a single fan-shaped cavity on an integral workpiece as a clamping part for clamping the integral workpiece, and correcting and milling straight edges of the decompression holes on the integral workpiece; then, taking the circle center of the integral workpiece as a cutting starting point, and adopting slow wire cutting to make linear cutting in the radial direction of the integral workpiece from inside to outside; stopping radial cutting after a distance of 2mm from the outer edge of the integral workpiece, and continuously adopting slow wire cutting to perform arc or linear cutting along the circumferential direction of the integral workpiece; then, linear cutting is carried out on the integral workpiece from outside to inside in the radial direction by adopting slow wire cutting, the workpiece returns to a cutting start point, and a triangular cavity (a thick solid line in fig. 2 is a cutting track of a linear cutting machine tool) and a connecting rib are formed between two adjacent fan-shaped cavities on the integral workpiece; repeating the steps for a time less than one time of the number of the fan-shaped cavities on the whole workpiece, namely arranging four fan-shaped cavities on one whole workpiece in the embodiment, wherein the repeating time is three times, and forming four mirror-symmetrically arranged triangle-like cavities and connecting ribs respectively; performing wire-cut middle separation on four connecting ribs formed on the integral workpiece to form four fan-like semi-finished products; and performing wire cutting and trimming on the surplus materials of the connecting ribs on 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 parts of the special-shaped thin-wall parts, namely, the internal cavity is machined in a linear cutting mode, but the whole appearance is reserved, and the machining is not carried out. After the whole inner cavity is machined, the working procedure of machining the appearance is carried out, so that the appearance is not changed in the process of machining the inner cavity. Compared with the traditional process that the single-piece molding processing is changed into the processing of a plurality of semi-finished products, the connecting part of the appearance of the whole workpiece is reserved, and finally, the appearance of the semi-finished product is processed to obtain the finished product 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, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (5)
1. The processing 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 radial direction of the integral workpiece from inside to outside;
b2, stopping radial cutting after a preset distance is reserved between the outer edge of the integral workpiece and the periphery of the integral workpiece, and cutting along the periphery of the integral workpiece;
b3, linearly cutting the integral workpiece from outside to inside in the radial direction, returning to a cutting start point, and forming a triangular cavity and a connecting rib between two adjacent fan-shaped cavities on the integral workpiece;
b4, repeating the steps B1-B3 one times less than the number of the fan-shaped cavities on the whole workpiece;
b5, middle separation is carried out on a plurality of connecting ribs formed on the integral workpiece so as to form a plurality of fan-like semi-finished products;
and B6, cutting the connection rib surplus materials on two sides of the fan-like semi-finished products to form fan-like part finished products.
2. The process for controlling the machining of a profiled thin-walled sector part according to claim 1, characterized in that the distance defined in step B2 is 1 to 3 mm.
3. The process for controlling the machining of the special-shaped thin-wall fan-shaped part according to claim 1, wherein the cutting in the step B2 is performed as a linear cutting or an arc cutting along the circumferential direction of the whole workpiece.
4. The process for controlling the machining 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 process for controlling the machining of the special-shaped thin-wall fan-shaped part according to claim 1, wherein the cutting is performed by adopting a slow wire cutting mode.
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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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| CN112238272B true CN112238272B (en) | 2023-05-02 |
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Family Cites Families (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 |
| CN101497144B (en) * | 2009-02-27 | 2010-09-08 | 江苏万工科技集团有限公司 | Method for processing sector part with hole |
| CN102554292B (en) * | 2010-12-23 | 2014-03-12 | 宁波江丰电子材料有限公司 | Target machining tool |
| CN103506721B (en) * | 2013-09-29 | 2016-05-04 | 青岛元通机械有限公司 | The wire-electrode cutting and processing method of annular workpiece and device |
| 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 |
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