CN111813049B - Hole flanging female die, manufacturing method thereof, storage medium and CNC (computer numerical control) machine tool - Google Patents
Hole flanging female die, manufacturing method thereof, storage medium and CNC (computer numerical control) machine tool Download PDFInfo
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- CN111813049B CN111813049B CN202010759226.5A CN202010759226A CN111813049B CN 111813049 B CN111813049 B CN 111813049B CN 202010759226 A CN202010759226 A CN 202010759226A CN 111813049 B CN111813049 B CN 111813049B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
- G05B19/4099—Surface or curve machining, making 3D objects, e.g. desktop manufacturing
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32153—Exchange data between user, cad, caq, nc, capp
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention relates to the field of machine tool machining, in particular to a hole flanging female die, a manufacturing method thereof, a storage medium and a CNC machine tool, wherein the method comprises the following steps: reading a 3D picture of the hole flanging female die; defining the opening orientation of a concave hole for hole flanging on a hole flanging female die as a vertical direction, and acquiring the concave hole and the material thickness t0, the hole flanging punch diameter D, the hole flanging inner corner radius r, the pre-punching diameter D and the hole flanging straight height h which are specified by an engineer on a 3D (three-dimensional) diagram; calculating a die drawing angle x required by the appointed concave hole according to the material thickness t0, the diameter D of the hole flanging punch, the inner angle radius r of the hole flanging, the diameter D of the pre-punched hole and the straight height h of the hole flanging, and inwards folding the bottom edge of the side wall surface of the appointed concave hole until an included angle formed by the side wall surface and the vertical direction reaches the die drawing angle x; and converting the 3D picture after correction of the concave hole into an NC code, and conveying the NC code to an external CNC machine tool for machining. The invention is used for solving the problem of non-straight hole flanging and reducing the die repairing cost.
Description
Technical Field
The invention relates to the field of machine tool machining, in particular to a hole flanging female die, a manufacturing method of the hole flanging female die, a storage medium and a CNC machine tool, wherein the storage medium is internally stored with a computer program, and the computer program can be executed by a processor of the CNC machine tool and realizes the method.
Background
At the hole flanging in-process, treat that the hole flanging material can the hoop extension lead to its thickness attenuate, because clearance between the hole flanging punch-die is one time the material thickness, when treating the hole flanging material thickness attenuate, hole flanging punch-die and material laminating just can not be fine lead to having certain clearance, cause the hole flanging to produce curls, not straight, conventional solution is that the hole flanging clearance is whole to be done for a short time, but this can make the hole flanging power grow, shorten the mould life-span, also make whole hole flanging position become too thin, reduce the intensity at hole flanging position.
Disclosure of Invention
The invention aims to solve the problem of non-straight hole flanging and reduce the die repairing cost, and is realized by the following technical scheme:
the hole flanging female die manufacturing method comprises the following steps:
a drawing reading step, which is used for reading a 3D drawing of the hole flanging female die;
further comprising the following steps performed after the drawing reading step:
a parameter obtaining step, namely defining the opening orientation of a concave hole for hole flanging on a hole flanging female die as a vertical direction, and obtaining the concave hole and the material thickness t0, the hole flanging punch diameter D, the hole flanging inner corner radius r, the pre-punching diameter D and the hole flanging straight height h which are specified by an engineer on a 3D diagram;
a concave hole correction step, which is used for calculating a die drawing angle x required by the appointed concave hole according to the material thickness t0, the hole flanging punch diameter D, the hole flanging inner angle radius r, the pre-punching diameter D and the hole flanging straight height h, and inwards folding the bottom edge of the side wall surface of the appointed concave hole until the included angle formed by the side wall surface and the vertical direction reaches the die drawing angle x;
and a processing step, converting the 3D picture after the correction of the concave hole into an NC code and transmitting the NC code to an external CNC machine tool for processing.
Wherein the pit correction step further comprises: and traversing all the curved surfaces of the selected concave hole, and selecting a cylindrical surface from the curved surfaces as a side wall surface of the concave hole.
The method for selecting the cylindrical surfaces comprises the following steps: and analyzing the radian of each curved surface in the concave hole one by one, and finding out the curved surface with the radian of 2 pi as the cylindrical surface.
Wherein the pit correction step further comprises: and fixing the spatial position of the top edge of the side wall surface of the concave hole.
Wherein the pit correction step further comprises:
combined stand
And
to find the die angle x.
Still provide a hole flanging die, the lateral wall face base that is used for the shrinkage pool of hole flanging on the hole flanging die draws in inwards, and this lateral wall face and vertical direction form the contained angle and be dialling die angle x, it is for dialling die angle x to dial die angle x
In the formula (I), the compound is shown in the specification,
t0 is the material thickness of the material to be flanged, D is the diameter of the flanging punch, r is the inner corner radius of the flanging hole, D is the diameter of the pre-punched hole, and h is the straight height of the flanging hole.
A computer readable storage medium is also provided, wherein the computer readable storage medium stores one or more programs which, when executed by a processor, implement the above-described method.
There is also provided a CNC machine comprising:
a processor; and the number of the first and second groups,
a memory arranged to store computer executable instructions that, when executed, cause the processor to perform the method described above.
According to the invention, the side wall surface of the concave hole in the hole flanging female die is modified from a vertical surface into an inclined surface with a specific die shifting angle, and the side wall surface of the hole flanging male die is kept to be a conventional vertical surface, so that when the male and female dies are pressed to the bottom, the male and female dies can be completely attached to the thinned material, the gap generated by thinning is eliminated, and the vertical side wall of the inner ring after hole flanging is ensured.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
FIG. 1 is a schematic view showing that the side wall surface of a concave hole in a hole flanging die of the present invention is inclined to a draft angle.
Detailed Description
In this embodiment, UG software is used as a CAD platform, a VS2015 (with an internal compiler being Microsoft Visual studio 2010) integration environment is used, and in a Windows operating system, the UG function and the NXOpenC + + library are compiled by the VS2015 to generate a DLL (dynamic link library) for the UG software to call and generate a code for controlling the CNC machine tool to process, and the code is input to the CNC machine tool to control the CNC machine tool to process. Among the above, UG software is called unicraphics NX, which is an interactive CAD/CAM/CAE/PDM (computer aided design, aided manufacturing, aided engineering, product data management) software system applied to PC, and provides a good solution for virtual product design and process design, and is commonly used for designing, machining, simulating, and NC code generation of hardware parts, wherein the NC code can be input into a CNC machine tool to control the CNC machine tool to perform part machining.
The 3D images referred to in the embodiment are all standard 3D images in the hardware manufacturing industry.
The manufacturing method of the hole flanging female die of the embodiment includes the steps that when the manufacturing method is implemented, firstly, a 3D image of the hole flanging female die is guided into UG software to be read, the 3D image is displayed in the UG software after the reading is successful, then an engineer manually adjusts the orientation of a coordinate system in the 3D image, specifically defines the opening orientation of a concave hole for hole flanging on the hole flanging female die to be the vertical direction, namely the Z-axis direction, then designates a concave hole, selects a program code module written in the UG software in advance, and automatically executes the following steps after inputting parameters such as material thickness t0, hole flanging punch diameter D, hole flanging internal corner radius r, pre-punching diameter D, hole flanging straight height h and the like corresponding to the concave hole shown in FIG. 1 into the program code module:
s1, traversing all the curved surfaces on the selected concave hole, analyzing each curved surface one by one, and picking out the cylindrical surface, specifically, because the side wall surface of the concave hole is necessarily the cylindrical surface, only the radian of each curved surface needs to be analyzed one by one, and the curved surface with the radian of 2 pi is found out, so that the curved surface can be identified as the cylindrical surface;
s2, fixing the spatial position of the top edge of the cylindrical surface, and inwards folding the bottom edge of the cylindrical surface until an included angle formed by the cylindrical surface and the vertical direction reaches the calculated die-shifting angle x. Wherein, the die drawing angle x is calculated according to the input material thickness t0, the hole flanging punch diameter D, the hole flanging inner corner radius r, the pre-punching diameter D and the hole flanging straight height h, and specifically:
referring to fig. 1, in the drawing, 1 is a material to be flanged, 2 is a flanging female die, and as the flanging edge is only subjected to hoop tensile stress, the flanging female die comprises:
in the formula, epsilontIs thickness strain,. epsilonθIs circumferential strain, t is the thickness after hole flanging, epsilonTheta outerFor outer ring strain after hole flangingWithin thetaStrain of the inner ring after hole flanging;
in conjunction with the above formula, one can obtain:
and after each concave hole forms a proper die shifting angle x according to the parameters of the concave hole, triggering to convert the modified 3D image of the hole flanging concave die into an NC code according to an input instruction of an engineer and transmitting the NC code to a CNC machine tool for machining so as to mill out the hole flanging concave die.
According to the invention, the side wall surface of the concave hole in the hole flanging female die is modified from a vertical surface into an inclined surface with a specific die shifting angle, and the side wall surface of the hole flanging male die is kept to be a conventional vertical surface, so that when the male and female dies are pressed to the bottom, the male and female dies can be completely attached to the thinned material, the gap generated by thinning is eliminated, and the vertical side wall of the inner ring after hole flanging is ensured.
It should be noted that the method used in this embodiment may be converted into program steps and apparatuses that can be stored in a computer storage medium, and implemented by being called and executed by the CNC machine controller.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The manufacturing method of the hole flanging female die comprises the following steps:
a drawing reading step, which is used for reading a 3D drawing of the hole flanging female die;
the method is characterized by further comprising the following steps executed after the drawing reading step:
a parameter obtaining step, namely defining the opening orientation of a concave hole for hole flanging on a hole flanging female die as a vertical direction, and obtaining the concave hole and the material thickness t0, the hole flanging punch diameter D, the hole flanging inner corner radius r, the pre-punching diameter D and the hole flanging straight height h of the concave hole selected by an engineer on a 3D diagram;
a concave hole correction step, which is used for calculating a die drawing angle x required by the appointed concave hole according to the material thickness t0, the hole flanging punch diameter D, the hole flanging inner angle radius r, the pre-punching diameter D and the hole flanging straight height h, and inwards folding the bottom edge of the side wall surface of the appointed concave hole until the included angle formed by the side wall surface and the vertical direction reaches the die drawing angle x;
and a processing step, converting the 3D picture after the correction of the concave hole into an NC code and transmitting the NC code to an external CNC machine tool for processing.
2. The method of claim 1, wherein the pocket modification step further comprises: and traversing all the curved surfaces of the selected concave hole, and selecting a cylindrical surface from the curved surfaces as a side wall surface of the concave hole.
3. The method of claim 2, wherein the method of selecting a cylindrical surface comprises: and analyzing the radian of each curved surface in the concave hole one by one, and finding out the curved surface with the radian of 2 pi as the cylindrical surface.
4. The method of claim 1, wherein the pocket modification step further comprises: and fixing the spatial position of the top edge of the side wall surface of the concave hole.
5. The method of claim 1, wherein the pocket modification step further comprises:
combined stand
And
to find the die angle x.
6. The hole flanging die is characterized in that:
the bottom edges of the side wall surfaces of the concave holes used for hole flanging on the hole flanging female die are inwards folded, an included angle formed between the side wall surfaces and the vertical direction is a die shifting angle x, and the die shifting angle x is
In the formula (I), the compound is shown in the specification,
t0 is the material thickness of the material to be flanged, D is the diameter of the flanging punch, r is the inner corner radius of the flanging hole, D is the diameter of the pre-punched hole, and h is the straight height of the flanging hole.
7. A storage medium, wherein the storage medium stores one or more programs that, when executed by a processor, implement the method of any of claims 1-5.
A CNC machine comprising:
a processor; and the number of the first and second groups,
a memory arranged to store computer executable instructions that, when executed, cause the processor to perform the method of any one of claims 1-5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010759226.5A CN111813049B (en) | 2020-07-31 | 2020-07-31 | Hole flanging female die, manufacturing method thereof, storage medium and CNC (computer numerical control) machine tool |
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| CN202010759226.5A CN111813049B (en) | 2020-07-31 | 2020-07-31 | Hole flanging female die, manufacturing method thereof, storage medium and CNC (computer numerical control) machine tool |
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| CN111813049A CN111813049A (en) | 2020-10-23 |
| CN111813049B true CN111813049B (en) | 2021-10-08 |
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| US8801720B2 (en) * | 2002-05-15 | 2014-08-12 | Otismed Corporation | Total joint arthroplasty system |
| CN102979965A (en) * | 2011-09-07 | 2013-03-20 | 上海启鹏工程材料科技有限公司 | Fiber reinforced polymer (FRP) tendon and stainless steel tube composite and preparation technology thereof |
| CN202447483U (en) * | 2012-02-21 | 2012-09-26 | 陕西重型汽车有限公司 | Stamping die |
| CN103835520A (en) * | 2012-11-20 | 2014-06-04 | 王哲 | Strengthening method for exerting hooping force on columnar structure through multi-layer wound tension belt |
| CN103769453A (en) * | 2014-01-21 | 2014-05-07 | 浙江福多纳汽车部件有限公司 | Sheet metal extrusion hole flanging formation method and device |
| CN105107950B (en) * | 2015-09-07 | 2017-06-23 | 上海奥林汽车配件有限公司 | A kind of punch assembly for shape of a saddle stamping parts |
| DE102016204619B4 (en) * | 2016-03-21 | 2019-10-17 | Richard Bergner Verbindungstechnik Gmbh & Co. Kg | Press-in connection between a high-strength component and a press-in element, method for forming such a press-in connection and press-in element for such a press-in connection |
| CN107138589B (en) * | 2017-06-19 | 2021-04-23 | 中南大学 | Plate hole flanging forming device and forming method |
| EP3460760B1 (en) * | 2017-09-26 | 2021-05-19 | Dassault Systèmes | Generating a 2d drawing representing a mechanical part |
| JP2020032584A (en) * | 2018-08-29 | 2020-03-05 | トクラス株式会社 | Manufacturing method of matte concave molded product |
| CN109127909B (en) * | 2018-08-31 | 2020-05-19 | 中国航发南方工业有限公司 | Thinned hole flanging punch and punch design method |
| CN110899693B (en) * | 2019-12-09 | 2022-06-14 | 株洲钻石切削刀具股份有限公司 | Forming method and forming device for powder metallurgy part |
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