CN116796456A - Method for generating and manufacturing zero part graph by digital model lofting of arc door leaf - Google Patents
Method for generating and manufacturing zero part graph by digital model lofting of arc door leaf Download PDFInfo
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Abstract
The invention discloses a method for generating and manufacturing a zero part diagram by digital model lofting of an arc door leaf, belonging to the technical field of hydraulic metal structure manufacturing; three-dimensional modeling lofting is performed based on Autodesk Inventor software, and an engineering drawing is obtained; generating a part map in an Auto CAD format through format conversion; after editing the part drawing, introducing a numerical control cutting machine to automatically cut and discharge; the method comprises the following steps: a1, establishing a middle beam; a2, creating an edge separation beam: modifying the middle beam file to obtain an edge beam file; a3, creating edge beams: modifying the middle beam file to obtain an edge beam file; a4, creating a door leaf assembly; a5, creating an engineering drawing of the three-dimensional model and an Auto CAD drawing; a6, editing the graph by Auto CAD software. The digital driving software is convenient for graph modification, and reduces the workload of drawing; the automatic CAD software is utilized to simplify the graph editing, so that the blanking programming procedure is reduced; the size and the shape are more accurate, and the parts do not need to be corrected when assembled, so that the manufacturing quality and the efficiency are improved.
Description
Technical Field
The invention relates to the technical field of hydraulic metal structure manufacturing, in particular to a method for generating and manufacturing a zero part diagram by digital model lofting of arc door leaves.
Background
The radial gate generally adopts a main beam type frame structure and is formed by welding parts such as a main beam, a top beam, a bottom beam, a horizontal secondary beam, a side beam, a separation beam, a radial panel and the like. Because the welding process has the electrothermal release effect of melting the welding rod and the thermal expansion and cold contraction deformation of the heating weld bead, the curvature radius and the transverse dimension of the arc door leaf after welding molding can be contracted and reduced. In order to ensure that the manufactured size and shape are consistent with the design, the size and shape of each part need to be amplified before manufacturing, which is a so-called arc door lofting process.
The welding shrinkage of the door leaf is an empirical value and is closely related to the thickness of the plate, the welding method and the welding process; the manufacturing units are determined empirically. The shrinkage of manual arc welding is generally 1.5/1000 of the welding length, and the gas shielded welding is 2/3000 of the welding length. The side beams, the separation beams and the panel sides of the arc door leaf are arc-shaped, the arc door leaf can shrink along the arc direction after being welded, the top and the bottom of the door leaf can tilt by a distance delta (0.4/1000-0.5/1000) L, and L represents the arc length of the panel, so that the curvature radius of the arc door is reduced. The lofting procedure before manufacturing is to amplify the curvature radius R of the arc door design into R', and perform blanking manufacture of parts.
The existing lofting method of the curvature radius of the arc door comprises the following steps: a field amplification sampling method and a curvature radius formula calculation method.
1. Site-enlarging sampling method.
Firstly, a center point O is defined on a lofting platform, the designed arc length AA' of an arc door leaf is drawn, and a straight line is drawn through an arc midpoint M and the center point O; and connecting the central point with two ends AO, A' O of the arc, wherein the included angle 2 alpha between the two lines is the central angle corresponding to the arc length of the door leaf; then, respectively extending the deformation delta of the welded door leaves outwards along the radii of AO and A 'O to obtain two points B, B', and obtaining an O 'point, namely a lofting center point of the door leaf by using a B, M, B' three-point co-circle method; b O ', M O ' and B ' O ' are the loft radii R ' of the door leaf. Measuring the chord length C and the vector height h of the arc BB ', and directly calculating the lofting radius R':
。
paving a cowfelt, a sheet iron or a polyester drawing and shaping film on a lofting platform, re-drawing an arc with a door leaf lofting radius R', drawing an arc on the inner side of a door leaf panel, and respectively drawing the angle positions of a bottom beam, a main beam, a horizontal secondary beam and a top beam according to the designed arc length and the welding shrinkage, wherein the welding shrinkage is added to the height of the main beam (the welding shrinkage is not added when the top beam, the bottom beam and the horizontal secondary beam are steel); and drawing the contour lines of the webs of the side beams and the partition beams, cutting out the laid polyester drawing shaping films and the like to obtain lofting templates of the webs of the side beams and the partition beams, and scribing and blanking on the steel plate by using the templates.
2. Radius of curvature formula calculation method.
According to the formation mechanism of arc door leaf welding deformation, a lofting formula of the curvature radius is summarized by engineering practice predecessor:
。
the code in the formula: r' -the leaf lofting radius; r- -arc door design radius; delta-deformation delta of two ends of the welded door leaf is approximately equal to (0.4/1000-0.5/1000) L, and arc length is designed at the top and bottom ends of the L-panel; 2 alpha-the central angle corresponding to the arc length is designed at the top and bottom ends of the panel.
The radius of the door She Fangyang can be determined by substituting the design value of the door leaf into the above formula. Drawing a lofting by adopting CAD software, drawing an inner arc line and an outer arc line of a door leaf panel by using a door leaf lofting radius R', setting welding shrinkage according to a plate thickness and a welding method, adding the welding shrinkage to the designed arc length (or angle) of a corresponding horizontal beam, and drawing the angle positions of a bottom beam, a main beam, a horizontal secondary beam and a top beam respectively; the height of the main beam is also required to be added with welding shrinkage (the welding shrinkage is not added when the top beam, the bottom beam and the horizontal secondary beam are steel); after the horizontal beam system position is determined, the shape and the size of the side beam, the web plate of the partition beam, the rear wing plate and the like are respectively drawn. Thereby obtaining a plan view of parts such as side beams, beam separating webs and the like, and scribing and blanking on the steel plate; and then the plates are assembled and welded into parts, and the whole assembly welding of the beam body and the door leaf panel is carried out on the arc-shaped platform.
From the above, in the existing arc door leaf manufacturing technology, the site amplification sample method is to manufacture a sample plate by a site sample for blanking, then to assemble and weld the plate materials into parts, and to carry out integral assembly and welding of the beam body and the door leaf panel on the arc platform; the radius of the door She Fangyang is calculated by the radius formula calculation method, lofting is carried out by CAD software, so that a part drawing is obtained, blanking and assembling welding of plates are carried out to form parts, and integral assembling welding of a beam body and a door leaf panel is carried out on an arc-shaped platform.
The precision of the sample plate manufactured by the site amplified sample is not high, and the process error accumulation exists in the process of sample plate blanking, so that the method can be only used for manufacturing low-grade arc doors, and the manufacturing quality of high-grade arc doors is difficult to ensure. CAD is drawing software without numerical drive function; in the use process, numerical values are input firstly, positions are designated, line segments or graphs are generated, then the sizes, the lengths, the positions and the shapes are marked, and the graphs need to be modified again when the sizes, the lengths, the positions and the shapes are incorrect. Each horizontal beam of the arc door is positioned at an angle or arc length, the lofting process is very tedious, time and labor are wasted, the efficiency is low, and mistakes are easy to make. The obtained plan view cannot be recycled, and the redrawing needs to be deleted for one time at a plurality of positions during modification. With the rapid development of electronic technology, advanced digital technology is introduced in traditional manufacturing, so that high-quality manufacturing and green development can be brought.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for generating and manufacturing a zero part graph by digital model lofting of arc door leaves.
A method for generating and manufacturing a zero part graph by arc door leaf digital model lofting, which is based on Autodesk Inventor software three-dimensional modeling lofting and acquires an engineering graph; generating a part map in an Auto CAD format through format conversion; after editing the part drawing, introducing a numerical control cutting machine to automatically cut and discharge;
the method comprises the following steps:
a1, establishing a middle beam;
a2, creating an edge separation beam: modifying the middle beam file to obtain an edge beam file;
a3, creating edge beams: modifying the middle beam file to obtain an edge beam file;
a4, creating a door leaf assembly;
a5, creating an engineering drawing of the three-dimensional model and an Auto CAD drawing;
a6, editing a graph by Auto CAD software: when the device is used for blanking by a numerical control cutting machine, the secondary welding shrinkage and the machining allowance are added to the width and length dimensions, and the size and shape of the graph are modified; and reasonably discharging according to the specification of the steel plate, and inputting the steel plate into a control system of a numerical control cutting machine to cut the shape of the part.
Preferably, in step A1, the following steps are included:
s1, establishing a two-dimensional sketch of the cross section of a beam in a portal by using Autodesk Inventor software;
S2, creating a septum Liang Moxing: after the sketch is completed, the three-dimensional model is obtained by 'stretching'.
Preferably:
in step A2, the following steps are included:
the middle beam model is stored as an edge middle beam file ". Ipt format"; different size shapes on the sketch are modified through an 'edit sketch' command, and different sizes generated by stretching are modified through an 'edit feature'; the shape and the size of the web wing plate of the middle diaphragm beam are changed into side diaphragm beams;
in step A3, the following steps are included:
the middle beam model is stored as a boundary beam file ". Ipt format"; different size shapes on the sketch are modified through an 'edit sketch' command, and different sizes generated by stretching are modified through an 'edit feature'; and after modification, the side beam is changed.
Preferably, in step A4, a door leaf assembly model is created at a software component environment interface; the method comprises the following steps:
t1, adjusting the side beam into an assembly drawing; selecting a Weldment/iam template to create a sheet metal part, and entering a welding part environment interface; a button is placed under the 'assembling' plate, and the boundary beam is selected to be adjusted in and fixed in an assembling coordinate system;
t2, adjusting the side separation beams and the middle separation beam into an assembly drawing; a button is placed under the assembly plate, and the side separation beam and the middle separation beam are selected to be adjusted to the corresponding position of the assembly drawing and fixed;
T3, creating a bottom beam and top beam part;
t4, creating a horizontal secondary beam part;
t5, creating a boundary beam front wing plate;
t6, creating a panel bottom edge reinforcing plate;
t7, creating an upper main beam part;
t8, creating a lower main beam part;
t9, checking whether the door leaf horizontal beam system and the vertical beam system interfere or not;
and T10, door leaf panel creation.
Preferably, in step T7, the following steps are included:
t701, creating a main beam part;
t702, editing the main beam part;
a. cutting the end part of the main beam:
b. creating inclined wing plates of the main cross beam;
c. and creating a connecting hole of the rear wing plate of the main beam.
Preferably, in step A5, the following steps are included:
v1, creating a door leaf assembly engineering drawing;
v2, creating an Auto CAD graph of the door leaf assembly.
Preferably, in step V1, the following steps are included:
v101, transferring a door leaf assembly model into an engineering drawing: creating an engineering drawing, and selecting a door leaf assembly model to call in;
v102, creating a door leaf left view;
v103, creating a cross section of the portal beam;
v104, editing the labeling graph;
the 'size' command marks the included angle between the upper main beam and the lower main beam, the included angle between the top beam and the horizontal secondary beam, and the included angle between the bottom beam and the lower main beam, and generates the center line of the section of the main beam and the center line of the section of the horizontal secondary beam;
V105, insert part list, lead part number: the "export BOM table" is named part detail table, and the door leaf assembly engineering drawing and the door leaf assembly model are stored in the same folder.
Compared with the prior art, the invention provides a method for generating and manufacturing the zero part graph by digital model lofting of the arc door leaf, which has the following beneficial effects.
1. The invention has the advantages that the digital driving software is convenient for graph modification, and the structure of the same type can be changed into a new part after being slightly modified, so that the workload of drawing is reduced; the automatic CAD software is utilized to simplify the graph editing, so that the blanking programming procedure is reduced; the size and the shape are more accurate, and the parts are assembled without correction and are directly used, so that the manufacturing quality and the manufacturing efficiency are improved.
2. The invention can directly print out paper version drawings for guiding the production process; unnecessary adjustment and correction in the assembly process are reduced, so that the workload and labor intensity in the assembly process are reduced; the three-dimensional PDF file is exported for omnibearing observation and is used for technical intersection before manufacturing, so that workers can more easily understand the spatial three-dimensional structure of the arc gate leaves, and unnecessary errors in the manufacturing process are reduced.
3. The invention uses the 'detection' function of the software to guide the dimension measurement, dimension inspection and the like in the checking assembly process, so that the quality control is easier to realize and ensure, and the manufacturing quality and the detection level of the door leaf are improved.
4. According to the invention, the three-dimensional modeling of the arc door leaves, the engineering drawing, the blanking of the Auto CAD drawing leading part, the part manufacturing, the alignment, the inspection, the measurement and the like in the door leaf assembling process are used for providing direct technical guidance and theoretical reference for manufacturing procedures, facilitating the operation of each procedure, ensuring the easier realization of manufacturing quality control, and having innovative and practical significance.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows; and will be apparent to those skilled in the art in part based upon a review of the following; alternatively, the teachings may be directed to practice of the present invention.
Drawings
FIG. 1 is a two-dimensional sketch of a septum.
Fig. 2 is a three-dimensional model of the septum Liang Lingjian.
FIG. 3 is a three-dimensional model of a side spacer part.
Fig. 4 is a three-dimensional model of a boundary beam part.
FIG. 5 is a header part edit.
Fig. 6 shows an arc door leaf assembly (flat).
Fig. 7 is a three-dimensional model of the main beam part.
Fig. 8 is an arc door leaf assembly (three-dimensional).
Fig. 9 is a door leaf assembly engineering drawing.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
1-9, a method for generating a zero part graph by arc door leaf digital model lofting is based on Autodesk Inventor software three-dimensional modeling lofting, and engineering graphs are obtained; generating a part map in an Auto CAD format through format conversion; after editing the part drawing, introducing a numerical control cutting machine to automatically cut and discharge;
the method comprises the following steps:
a1, establishing a middle beam;
a2, creating an edge separation beam: modifying the middle beam file to obtain an edge beam file;
a3, creating edge beams: modifying the middle beam file to obtain an edge beam file;
a4, creating a door leaf assembly;
a5, creating an engineering drawing of the three-dimensional model and an Auto CAD drawing;
a6, editing a graph by Auto CAD software: when the device is used for blanking by a numerical control cutting machine, the secondary welding shrinkage and the machining allowance are added to the width and length dimensions, and the size and shape of the graph are modified; and reasonably discharging according to the specification of the steel plate, and inputting the steel plate into a control system of a numerical control cutting machine to cut the shape of the part.
A septum is created comprising the steps of.
S1, establishing a two-dimensional sketch of the cross section of a beam in a portal by using Autodesk Inventor software; as shown in fig. 1.
S101, setting unit precision: opening Autodesk Inventor software, creating a first file "Sheet metal. Ipt" to enter an environment for creating Sheet metal parts, clicking a menu "tool" under column "document setting", and adjusting the linear dimension precision to be 0.001mm and the angle precision to be more than 0.00001 degrees.
S102, drawing a center line of a main beam and a rear wing plate:
in the sheet metal part environment, clicking a section of a ' three-dimensional model ' of a secondary menu bar to start to create a two-dimensional sketch ' command; newly creating a sketch on an xy plane, and drawing a cross section of a diaphragm in a door leaf design drawing; drawing a central line of the cross section of the lower main beam by using an arc door lofting radius R', positioning the right end at an original coordinate point, and restricting the position to be horizontal; drawing a rectangle of the rear wing plate section of the main beam and being perpendicular to the central line of the lower main beam, and marking the shrinkage of the left end point size of the central line = panel thickness + main beam design height + thousandth; drawing the central line of the upper main beam by the original coordinate point and the length R', wherein the angle is the corresponding value of arc length between the two main beams plus one thousandth of shrinkage; drawing a rectangle of the cross section of the rear wing plate of the upper main beam, restraining the rectangle perpendicularly to the central line, and adding 1/1000 contraction amount to the left end point of the central line.
According to 7.5.1 requirements of the current specification of manufacturing, mounting and acceptance of steel gates for water conservancy and hydropower engineering (GB/T14173-2008), the center distance between two main beams is + -3 mm, and the deviation of the gate leaves after lofting must be 1-2mm larger than the standard value. The welding shrinkage is increased when the center distance between the upper main beam and the lower main beam is measured to be smaller than the value, and the welding shrinkage is continued when the requirement is met, so that reworking is avoided.
S103, drawing a panel arc line:
clicking a pull-down menu of an arc on a sketch edition of a menu bar, selecting a circle center arc button, and drawing an arc line on the outer edge of the door leaf panel by taking an original coordinate point as a circle center and R' as a radius; the angle between the lower end point of the arc and the central line of the lower main beam is equal to the corresponding angle value of 'design arc length + shrinkage +20 mm'; an upper end point of the arc line reaches a corresponding angle value of 'design arc length + shrinkage +20 mm' to the central line angle of the upper main beam; the outer edge arc line of the panel is offset inwards by one panel thickness to obtain an inner edge arc line.
S104, drawing a main beam section:
the section of the main beam is I-shaped, a 'rectangle' drop-down menu on a 'sketch' section of a menu bar is clicked, a 'three-point rectangle' command is selected, an arbitrary rectangle is drawn, and the design size of the section of the front wing plate is marked; the long sides are respectively restrained and vertically symmetrical with the central lines of the upper main beam and the lower main beam, the long sides adjacent to the panel are restrained in a tangential mode with the inner circular arc line, and the section drawing of the front wing plate is completed; a girder web section rectangle is drawn as well, and the short sides are respectively collinear with the front wing plate and the rear wing plate and are symmetrically restrained with the central lines of the upper main beam and the lower main beam.
S105, drawing a horizontal secondary beam section of the bottom beam top beam:
The bottom beam and the top beam are generally standard channel steel; clicking an insert button on a sketch edition of a menu bar, and selecting CAD image blocks with the same specification of channel steel section to insert near a bottom beam; position size constraint and upward opening are added to the CAD graph block, back surface line and original coordinate point constraint are overlapped, the front limb angle line constraint is tangential to the inner circular arc line, and the included angle between the front limb angle line constraint and the central line of the lower main beam is equal to the corresponding angle of the design arc length plus one thousandth of shrinkage.
Repeating the operation to create the section of the top beam channel steel.
The horizontal secondary beam is generally standard I-steel; inserting CAD blocks with the same specification of I-steel sections, adding shape, position and size constraints, wherein the centerline of the I-steel web is 'coincident' with the constraints of the original coordinate points, the constraints of two end points of a straight line of a forelimb angle are 'coincident' with the inner circular arc line, and the included angle between the two end points and the centerline of the main beam section is equal to the contraction amount added by the design arc length; the creation of the horizontal secondary beam section is completed.
S106, drawing the profile of a middle beam web plate:
the middle beam is divided into three parts by the upper main beam and the lower main beam: upper, middle and bottom spacer beams. When the door leaf size is higher, the door leaf needs to be manufactured in sections so as to be convenient to transport. According to transportation limitation and structural characteristics, firstly determining the section positions of the webs of the middle spacing beam, and respectively manufacturing two webs from top to bottom by section joints; therefore, the middle separation beam is divided into an upper section and a lower section: middle partition beam in the upper section and middle partition beam in the lower section.
Drawing the web profile of the bottom spacer:
drawing between the lower main beam and the bottom beam, respectively drawing chamfers at the welding seam of the web plate and the wing plate and at the right angle of the front wing plate of the section of the lower main beam, and drawing chamfers at the fillets of the bottom beam; connecting the upper end point of the limb angle of the bottom beam (channel steel) with the lower end point of the rear wing plate of the lower main beam, and drawing a straight line; and forming a closed area by the profile of the bottom spacer web, and drawing the cross section of the bottom spacer web.
Drawing wing plates of the bottom spacer:
shifting the rear straight edge of the bottom spacer web to the outer side by a designed plate thickness to obtain a rear straight line of the wing plate, and connecting two ends of the straight line to form a rectangular section of the rear wing plate; reserving a break when the abutting angle of the short side and the bottom beam is smaller than 50 degrees, restraining the shape, marking the size and the angle, and finishing drawing the bottom spacer beam wing plate.
Repeating the operation to respectively draw webs and wing plates of the upper partition beam and the upper and lower sections of the middle partition beam; after the sketch is completed, the sketch is stored as a middle partition beam part.
S02: a septum Liang Moxing is created.
After the sketch is completed, the operation interface automatically returns to the environment of the three-dimensional model layout, clicks a menu bar stretching command, and selects: the profile surfaces of the webs of the bottom spacer beam, the middle spacer beam lower section, the middle longitudinal beam upper section and the upper spacer beam are stretched to the designed plate thickness in a two-way symmetry manner, so that a three-dimensional model of the corresponding web is obtained; clicking the menu bar stretching command again, and respectively selecting: and the wing plate sections of the bottom separation beam, the middle separation beam lower section, the middle separation beam upper section and the upper separation beam are stretched to the designed plate width in a two-way symmetry manner, so that a three-dimensional model of the corresponding wing plate is obtained.
After the creation of the septum model is completed, as shown in figure 2.
Creating side spacer beams, comprising the following steps.
The operation interface menu bar clicks a 'file' drop-down menu, and stores the middle beam model as an edge separation beam file.
The side separation beam is a side cross-sectional view of the joint part of the main beam of the door leaf and the support arm, and is parallel to the plane of the middle diaphragm beam and the side beam; the sections of the door leaf panel, the bottom beam, the horizontal secondary beam and the top beam are identical, and the differences are that the width and the plate thickness of the rear wing plate of the main beam, the plate thickness of the side separation beam web plate, the length and the width of the side separation beam wing plate and the like. Different size shapes on the sketch are modified by an "edit sketch" command, and different sizes generated by the stretch command are modified by an "edit feature".
Double-clicking a sketch by a left mouse button in a window of a model browser in a three-dimensional model edition block of a menu bar, entering a sketch editing interface, and modifying the width and plate thickness dimensions of a rear wing plate of a main beam to be consistent with design values, wherein the shape of the rear wing plate can be automatically changed; the length of the side separation beam wing plate is also changed, the original constraint is deleted when the length is not changed, and the new constraint is added at the corresponding position of the rear wing plate of the main beam, so that the length of the side separation beam wing plate can be automatically updated.
In the same manner, the plate thickness of the side spacer wing plate is modified.
And clicking a corresponding stretching command on the left key of a mouse in a window of a ' model ' browser in a three-dimensional model ' section of a menu bar, selecting an ' editing feature ' on a right key dish, automatically popping up a ' stretching command dialog box ', modifying the thickness of a web plate and the width of a wing plate to design values, and then ' determining ' to finish automatic updating.
The shape and the size of the web wing plate of the middle diaphragm beam are changed into the side diaphragm beam.
After the side sill model is created, it is shown in FIG. 3.
And creating the boundary beam, which comprises the following steps.
The operation interface menu bar clicks a 'file' drop-down menu, and stores the middle beam model as a boundary beam file.
The side beam design drawing is a side view or a side sectional view of the arc door leaf, and is parallel to the plane of the middle diaphragm beam and the side separation beam. The cross section of the side beam is asymmetric I-shaped, so that the radius of the side beam web plate needs to be reduced by one front wing plate thickness. The lengths of the bottom beams and the top beams are flush with the outer sides of the rear wing plates of the side beams, and the lengths of the front wing plates of the main cross beams and the horizontal secondary beams are connected with the side surfaces of the front wing plates of the side beams; the lengths of the web plates of the main beam, the web plates of the horizontal secondary beams and the rear wing plates extend to the inner side of the web plate of the side beam to be terminated. Therefore, the side beam web plate is not provided with a corresponding notch, and the rear wing plate of the main cross beam is connected with the side surface of the rear wing plate of the side beam, which is the main difference of the side beam.
The modification method of the middle partition beam part model is basically the same as that of the side partition beam, different sizes and shapes on the sketch are modified through a command of editing the sketch, and different sizes generated in the stretching process are modified through an editing feature; after the modification is completed, the side beam part model can be changed (fig. 4).
It should be noted that: the front wing plate of the boundary beam is arc-shaped in the length direction, so that the boundary beam is convenient to manufacture and does not need to be assembled with the boundary beam; when the door leaves are assembled, the door leaves are assembled together with the panel.
And creating a door leaf assembly model.
The middle partition beam, the side partition beams and the side beams are all created at the Autodesk Inventor software part environment interface, and the door leaf assembly model is created at the software part environment interface.
The door leaf assembly is the assembly process of the door leaf, the manufactured parts of the middle partition beam, the side partition beam and the side beam are adjusted into an assembly diagram to be simulated and assembled, and the part diagrams of the bottom beam, the main beam, the horizontal secondary beam, the top beam and the like are drawn according to the position of the assembly state; the correct assembly position is the most critical process for determining the manufacturing precision of the door leaf, and directly influences the manufacturing quality of the door leaf and the parts.
Comprising the following steps.
T1, the boundary beam is adjusted into an assembly drawing.
After the boundary beam part model is completed, clicking a first-level menu 'new file' to select a 'Weldment.iam' template to create a sheet metal part at Autodesk Inventor software part environment interface, and entering a welding part environment interface; clicking a button below an assembly section of the secondary menu bar, and selecting the created boundary beam to call in; clicking a constraint button, selecting a constraint type of 'surface flush', and respectively selecting the original coordinate system 'YZ, XZ and XY' planes of the assembly block to be aligned with the original coordinate system planes of the boundary beams one by one; the side beams are fixed in an assembly coordinate system.
T2, the side separation beam and the middle separation beam are adjusted into an assembly drawing.
Clicking a button below an assembly plate of a secondary menu bar, selecting the created side separation beam to be adjusted in, clicking a constraint button, selecting the constraint type as 'surface flush', and respectively selecting the original coordinate systems YZ and XZ planes of the assembly plate to be correspondingly aligned with the coordinate systems YZ and XZ planes of the side separation beam; the XY plane of the side separation beam coordinate system deviates from the XY plane of the original coordinate system of the assembly environment by a welding shrinkage amount of 'design interval plus one thousandth', a button end command is determined by clicking a dialog box, and the position of the side separation beam is fixed.
Repeating the operation, and adjusting the middle partition beam into the corresponding position of the assembly drawing and fixing.
And T3, creating bottom beam and top beam parts.
T301, creating side beams, side spacer beams and middle spacer beam symmetry.
In a 'assembling' section menu bar 'plane' drop-down menu, selecting a 'shift from plane' button, selecting an assembling original coordinate system XY plane, shifting the welding contraction amount of 1/2+1/1000 of the center distance of the side beam towards the side beam of the middle beam, and naming the welding contraction amount as a 'longitudinal center plane'; the door leaf longitudinal center plane is created.
Clicking a mirror image command on an assembly edition menu bar, selecting boundary beams, boundary separation beams and middle separation beams as objects in a pop-up mirror image part dialog box, clicking a mirror image plane button, selecting a longitudinal center plane of a door leaf, clicking a next step, and defaulting a system option.
For ease of viewing, the symmetry of the side septal beam, the septal beam, is hidden from view.
T302, creating bottom beam and top beam parts.
Clicking a command of creating parts on an assembly section menu bar, named as a bottom beam, and storing the parts in the same folder; and selecting a longitudinal center plane as a supporting plane to newly establish a sketch, enabling the sketch of the middle beam to be visible, projecting the contour line of the section of the bottom beam channel steel, and completing the sketch.
The operation interface automatically returns to a 'three-dimensional model' section of the part environment, clicks a 'stretching' command of a menu bar, selects a section profile of the bottom beam channel steel to stretch, and 'determines' after 'range' selects the outer side surfaces of the rear wing plates of the left and right side beams, so that the creation of the bottom beam part is completed; clicking a right-click menu on the drawing area by the mouse to finish editing, and automatically returning the welding part environment assembly layout by the operation interface.
Repeating the above operation steps to create the top beam part.
And T303, editing the top beam part.
The inner side surface of the front wing plate of the boundary beam is in butt joint with the front corner limb of the top beam (channel steel); therefore, the top beam end needs to be edited, and a corresponding opening is formed, so that interference with the front wing plate of the side beam during assembly is avoided.
Opening the top beam part stored in the folder, and automatically entering the part environment interface by software; clicking a command of creating a two-dimensional sketch on a three-dimensional model block of a secondary menu bar, selecting the back surface of a top beam channel steel as a sketch plane, projecting an end line, and taking a panel side angle limb line as a construction line; drawing a rectangle at each end, wherein the long side of the rectangle is parallel to the projection line of the angle limbs, and the marking size is equal to the thickness of the front wing plate of the boundary beam plus 1mm; the short side of the rectangle is parallel to the projection line of the end, the distance from the short side of the marked inner side to the projection line of the end is equal to the embedded width +1mm of the front wing plate of the boundary beam, and the other short side of the rectangle exceeds the length of the end, so that the two-dimensional sketch is completed.
The operation interface automatically returns to a 'three-dimensional model' edition, a 'stretching' command is selected, two rectangular cross sections on a sketch are selected for stretching, and a 'difference' button is clicked in a Boolean operation mode to 'determine'; selecting a chamfering command to chamfer the inner straight edge of the opening, and storing the closing part after finishing editing the top beam part (figure 5); the automatic updating can be completed in the assembly drawing.
And T4, creating a horizontal secondary beam part.
The two ends of the horizontal secondary beam are connected with the side beam web plate, the cross section of the side beam is in an asymmetric I shape, and the front wing plate extends to the inner side of the door leaf by a distance; therefore, the front corner limb of the horizontal secondary beam (I-steel) needs to be provided with a notch, so that interference is avoided.
The creation and editing process of the horizontal secondary beam parts is basically the same as that of the top beam, except that the stretching range is between the inner sides of the webs of the two side beams; the operation can be completed according to the steps T301-T302; door leaf assembly diagram condition after the horizontal secondary beam part creation is completed (fig. 6).
And T5, creating a boundary beam front wing plate.
T501, creating a boundary beam front wing plate part.
Clicking a command of creating parts on an assembly edition menu bar, named as an edge beam front wing plate, and storing the parts in the same folder; and selecting an XY plane of the boundary beam coordinate system as a newly-built sketch depending on the plane, making the sketch of the boundary beam bright, projecting an inner circular arc line of the panel, prolonging the lower end by 10mm, inwards shifting the inner circular arc line to the plate thickness of the front wing plate to obtain another circular arc line, and sealing two ends of the two circular arc lines by using a straight line to form a sealed section to finish the sketch.
The operation interface automatically returns to a 'three-dimensional model' edition, clicks a 'stretching' command of a menu bar, selects the bidirectional asymmetric stretching of the section outline of the front wing plate to the design width, and 'determines' after finishing, and finishes the creation of the front wing plate of the boundary beam; clicking a right-click menu on the drawing area by the mouse to finish editing, and automatically returning the welding part environment assembly layout by the operation interface.
T502, symmetrical front wing plate of side beam at the other side.
Clicking a mirror image command on an assembly edition menu bar, popping up a mirror image part dialog box, selecting a boundary beam front wing plate as a mirror image object, clicking a mirror image plane button, selecting a longitudinal center plane of a door leaf, clicking a next step, defaulting to system options and determining; the front wing plate of the side beam at the other side is symmetrically finished.
And T6, creating a panel bottom edge reinforcing plate.
The bottom edge reinforcing plate of the panel is arranged on the inner side of the front wing plate of the two side beams, and the front of the bottom beam plays a role in reinforcing the door She Deyuan.
Clicking a command of creating parts on an assembly edition menu bar, namely a bottom edge reinforcing plate, wherein the storage positions are in the same folder; selecting a longitudinal center plane as a supporting plane to create a sketch, enabling the sketch of the middle beam to be visible, projecting the contour line of the cross section of the bottom edge reinforcing plate, and completing the sketch; the operation interface automatically returns to a 'three-dimensional model' edition of the part environment, clicks a 'stretching' command of a menu bar, selects a section profile of a bottom edge reinforcing plate for stretching, and 'determines' after 'range' selects the inner side surfaces of the front wing plates of the left and right side beams, so that the part of the bottom edge reinforcing plate is completely created; clicking a right-click menu on the drawing area by the mouse to finish editing, and automatically returning the operation interface to the welding part environment assembly layout interface.
And T7, creating an upper main beam part.
The cross section of the main beam is I-shaped, the front wing plate, the web plate and the rear wing plate of the main beam are respectively and laterally connected with the front wing plate, the web plate and the rear wing plate of the boundary beam, and the variable cross section beam is arranged at the middle high end and the low end of the length direction of the main beam. And drawing the maximum shape when in creation, and completing editing in the part graph.
T701, creating a main beam part.
Clicking a command of creating parts on the 'assembly' menu bar section, named as a main beam, and storing the parts in the same folder; selecting a longitudinal center plane as a supporting plane to create a sketch, enabling the sketch of the middle beam to be visible, projecting the contour line of the cross section of the main beam, and completing the sketch; the operation interface automatically returns to a 'three-dimensional model' edition, clicks a menu bar 'stretching' command, selects a main beam section profile for stretching, and 'determines' after 'range' selects the inner sides of left and right side beam webs, so that the main beam part is established; clicking a right-click menu on the drawing area by the mouse to finish editing, and automatically returning the welding part environment assembly layout by the operation interface.
T702, editing the main beam part.
The main beam is a variable cross-section beam created in a maximum shape; therefore, the part map modification is to cut away unnecessary portions first.
a. Cutting the end part of the main beam:
opening a main beam part stored in a folder, and enabling software to automatically enter a part environment interface; clicking a command of creating a two-dimensional sketch on a three-dimensional model layout of a secondary menu bar, selecting a web plate of a main beam as a sketch plane, and taking projection ends and upper and lower wing plates as construction lines; drawing a boundary line of the butt joint part of the end head of the main beam and the cross section of the boundary beam, variable cross section oblique lines of a web plate of the main beam and a rear wing plate of the main beam at the joint part of the support arm to form a continuous folding line; corresponding constraint and size marking are carried out on the projection line; shifting the drawn fold line outwards by a distance exceeding the range of the main beam, and closing two ends to form a surface area; the two-dimensional sketch is completed, the operation interface automatically returns to a 'three-dimensional model' edition, a 'stretching' command is selected, a closed section on the sketch is selected for stretching, and a 'difference' button is clicked for 'determination'; one end of the main beam is cut.
b. Creation of a bevel wing plate of a main beam:
clicking a command of creating a two-dimensional sketch on a menu bar of a three-dimensional model, and selecting the side surface of a web plate of the main beam as a sketch plane; projecting oblique lines cut by the web plate of the main beam, outwards shifting the thickness of an oblique wing plate, and drawing welding grooves of the end head, the rear wing plate of the side beam and the horizontal rear wing plate of the main beam to form a closed section; the method comprises the steps of finishing a sketch, automatically returning a 'three-dimensional model' layout by an operation interface, selecting a 'stretching' command, selecting a closed section on the sketch for stretching, clicking a Boolean operation 'union' button, then stretching in a two-way asymmetric mode to the width of a wing plate, and inputting a width value for 'determination'; the rear wing plate of the main beam oblique head is established.
Repeating the above operation to create the rear wing plate at the joint of the main beam support arm.
c. And creating a connecting hole of the rear wing plate of the main beam.
Clicking a command of creating a two-dimensional sketch on a menu bar of a three-dimensional model, and selecting a new sketch on a rear wing plate plane of the main beam; projecting the side line of the rear wing plate of the main beam and the longitudinal center plane of the main beam as construction lines, drawing a cross center line of the connecting hole by taking the projection line as a reference, drawing all the connecting holes by taking the cross center line as a reference, and marking the design size and the constraint position; completing a two-dimensional sketch, automatically returning a 'three-dimensional model' edition block by an operation interface, clicking a 'stretching' command of a menu bar, selecting all Kong Lashen, clicking a 'difference set' button of Boolean operation, and 'determining' after 'range' selection 'is communicated', thereby completing the creation of a main beam connecting hole; clicking a chamfering command on a menu bar of the three-dimensional model, chamfering right angles at the welding seam, avoiding interference, and finishing editing one end of the main beam part.
Clicking a mirror image command on a menu bar of the three-dimensional model, selecting all modification characteristics of the end head, and taking a longitudinal center plane as a mirror image plane to be symmetrical to the other end; the main beam part editing is complete (fig. 7).
After completion, the closing part map is saved.
And updating the door leaf assembly model in the welding part environment, and automatically changing the shape of the main beam.
And T8, creating a lower main beam part.
In the ' assembly ' layout of the welding part environment, the sketch of the boundary beam is displayed, an axis command is created by selecting an axis drop-down menu on a menu bar through two points ', the center point of an arc panel of the sketch of the boundary beam on two sides is clicked, and the axis creation of the arc door leaf is completed.
Clicking an array command in an assembly layout of the welding component environment, popping up an array dialog box, selecting an upper main beam as an array part, clicking an annular array button of the dialog box, selecting the axis of a door leaf as a central line, inputting an arc length between the upper main beam and the lower main beam and determining an angle corresponding to welding shrinkage, and completing the creation of the lower main beam part.
And T9, checking whether the door leaf horizontal beam system and the door leaf vertical beam system interfere.
The side isolation beam MIR and the middle isolation beam MIR symmetrical parts created in the step of displaying the brightness T301; so far, all horizontal beam systems (comprising bottom beams, a panel bottom edge reinforcing plate, a lower main beam, a horizontal secondary beam, an upper main beam and a top beam) and all vertical beam systems (comprising side beams, front wing plates, side separation beams, middle separation beams, side separation beam MIR and middle separation beam MIR symmetrical parts) are completely established; checking whether an excessive gap exists at the butt joint or whether interference occurs at the contact part is a key for ensuring the assembly quality.
And selecting a 'check' layout in a secondary menu bar of the welding part environment, clicking a 'measure' command, and measuring gaps, sizes and distances of parts and the like at the butt joint position.
Clicking an interference check command on a second-level menu bar 'check' section of the welding part environment, selecting a 'definition selection set 1' button to click a horizontal beam system, selecting a 'definition selection set 2' button to click a vertical beam system, and then 'determining', wherein software automatically checks the interference quantity, the volume and a red display interference area; and returning to the part environment for modification and perfection according to the prompt.
And T10, door leaf panel creation.
Clicking a command of creating parts on an assembly section menu bar, namely a panel, wherein the storage positions are in the same folder; selecting a longitudinal center plane as a supporting plane to newly establish a sketch, enabling the sketch of the middle beam to be visible, projecting an inner arc line and an outer arc line of the panel, and closing two ends of the arc line to finish the sketch; the operation interface automatically returns to a 'three-dimensional model' edition, clicks a 'stretching' command of a menu bar, selects the bidirectional symmetrical stretching of the panel outline, inputs the stretching width equal to the panel design width +1/1000 welding shrinkage +40 correction quantity and then 'determines', and completes the creation of panel parts; clicking a right-click menu on the drawing area by the mouse to finish editing, and automatically returning the welding part environment assembly layout by the operation interface.
To this end, the main components of the arc door leaf assembly are created (fig. 8).
The shape of the other stiffening plates is simple, so that common technicians can draw the stiffening plates smoothly and the stiffening plates are not repeated.
And creating an engineering drawing and an Auto CAD drawing of the three-dimensional model, wherein the engineering drawing and the Auto CAD drawing comprise the following steps.
And V1, creating a door leaf assembly engineering drawing.
V101, transferring a door leaf assembly model into an engineering drawing:
clicking a first-level menu 'new file' to select a 'Standard. Idw' template to create an engineering drawing at a Autodesk Inventor software welding component environment interface, and entering an engineering drawing environment; clicking a button of a second-level menu bar for placing a basic view under a view layout, and selecting a door leaf assembly model to call in; the view direction selects a self-defined view direction, an operation interface automatically jumps to a three-dimensional model interface, a rear end plate of a lower main beam is selected as a viewing direction, a right mouse button menu finishes the self-defined direction, and the interface automatically returns to an engineering drawing environment; and selecting proper proportion in the engineering drawing popup window, and after the hidden line option is not displayed, "determining", completing the creation of the main view.
V102, creating a door leaf left view:
clicking a projection view button under a view placement section of a menu bar, selecting a right position point of a right movement of a main view, positioning a left mouse button, selecting a creation menu, and completing the creation of a left door leaf view.
V103, creating a portal beam cross-section:
clicking a cross section button under a section of a view placement section of a menu bar, selecting a front view of a door leaf, clicking a point at a proper position above the door leaf, vertically moving downwards through a door leaf range, clicking a left mouse button termination section line, vertically moving rightwards in a defined direction, clicking a right mouse button menu continuation, and clicking a left mouse button confirm to a placement position; the creation of the portal beam cross-section is completed.
In the same way, a side cross-sectional view, a lower main cross-sectional view, etc. are created.
Cross-sectional views, partial views, etc. of the parts of the assembly drawing may be created as desired.
V104, editing the labeling graph:
on the Autodesk Inventor software engineering drawing environment interface, a secondary menu bar selects a 'marking' button to enter a dimension marking block, and a 'dimension' command is selected to mark an included angle between an upper main beam and a lower main beam, an included angle between a top beam and a horizontal secondary beam, an included angle between a bottom beam and a lower main beam and the like, so that the inner chord length of a panel can be directly marked for convenient measurement during assembly on an arc-shaped platform, and various control dimensions are required.
Selecting a symmetrical central line button in a menu bar section of the mark, clicking two side lines of a web plate of the main beam, and generating a central line of a cross section of the main beam; clicking two side lines of the horizontal secondary beam web plate to generate a central line of the horizontal secondary beam section.
In the same way, the bisector of the required part, the center line of each view, etc. can be obtained.
V105, insert part list, lead part number:
selecting a BOM list button in a management section of a secondary menu bar of a welding part environment, selecting a BOM list export from a pop-up BOM list dialog box, determining on a pop-up window, storing the selected BOM list export as a part list in the same folder, automatically generating a part list assembled by door leaves, editing the content of the list appropriately, and completing the insertion at a proper position of an engineering drawing.
Selecting an automatic leading-out serial number button on a section menu bar of the marking, selecting a placing mode and a leading-out serial number shape on an automatic leading-out serial number popup window, selecting a characteristic part of a marking part on a view, continuing a right button menu of the mouse, clicking a placing position on a left button, and selecting an application on the popup window. Automatically generating a part serial number of the door leaf assembly, and editing the leading-out serial number according to the detail list serial number; the leading-out serial numbers are moved to proper positions, so that the beautifying view is perfected; door leaf assembly engineering drawing creation is completed (fig. 9).
And storing the door leaf assembly engineering drawing and the door leaf assembly model in the same folder, wherein the engineering drawing is a follow-up file of the three-dimensional model, and the engineering drawing is updated and changed after the three-dimensional model is modified.
V2, creating an Auto CAD graph of the door leaf assembly.
After the door leaf assembly engineering drawing is established, clicking a drop-down menu of a secondary menu bar ' file ' on an engineering drawing environment interface, selecting a ' stored copy ' as a ' menu, popping up the ' stored copy ' as a ' window, selecting a ' AutoCAD DWG file ' of a stored type ', and generating and storing a proper version ' completed ' of an adjustment file in an ' option ', wherein the door leaf assembly drawing ' DWG ' format file is generated and stored in the same folder.
It is emphasized that: clicking a 'file' drop-down menu in a secondary menu bar of the welding part environment, selecting a 'export' command, and directly converting the drawn door leaf assembly model into Auto CAD '. Dwg' stereogram, photo, three-dimensional PDF and the like.
The parts stored in the door leaf assembly folder are opened by Autodesk Inventor software respectively: a main beam model, a bottom beam, a top beam, a horizontal secondary beam, a side separation beam, a middle separation beam, a side beam front wing plate and the like; creating engineering drawings according to the operation of the step V1 and storing the engineering drawings in the same folder; then operating according to the V2 step, and obtaining an AutoCAD DWG file of the same; the method of operation is substantially the same and will not be described in detail.
Auto CAD software edits the graphics.
The created ". Dwg" format graphics are opened in Auto CAD software, the line type and the set layer can be changed, and the simplified graphics can be edited according to the process requirement.
When the device is used for blanking by a numerical control cutting machine, the secondary welding shrinkage and the machining allowance are added to the width and length dimensions, and the size and shape of the graph are modified; deleting the marked size and other unnecessary line segment patterns, reasonably discharging according to the specification of the steel plate, and inputting the steel plate into a control system of the numerical control cutting machine to cut the shape of the part.
Since Auto CAD is a common software, it can be applied by a person of ordinary skill in the art, and will not be described in detail.
What needs to be clarified is: the CAD graph with the 'dwg' format converted from the engineering graph created by Autodesk Inventor software has the shape and the size of the parts of the CAD graph of 1 no matter how much the original engineering graph is: 1 ratio.
The part diagram created by Autodesk Inventor software is expressed as a whole, and is required to be split into single diagrams of different plates during discharging and blanking, and is required to be drawn into material list and the like during assembly of parts.
The invention provides an operation method for obtaining a manufacturing process diagram of a radial gate leaf based on Autodesk Inventor software three-dimensional modeling lofting; the software operating system is digitally driven, when in use, firstly straight lines or other geometric figures are drawn, then the positions are restrained, the sizes are marked, and after different numerical values are input, the corresponding lengths and angles of the marked sizes are automatically changed. The method is very suitable for the lofting process of the arc gate.
The invention utilizes Autodesk Inventor software to establish a door leaf side view: drawing the boundary beam plan, and generating a boundary beam model; the side beam sketch is modified into the size and the shape of the cross section of the partition beam and then updated, and the graph can automatically generate a partition beam model; the side beam and the partition beam model are adjusted into an assembly environment, so that other related part models, such as a main beam, a top beam, a bottom beam, a horizontal secondary beam and the like, can be drawn in an assembly drawing, and the newly built part models are generated; and drawing a part model in the assembly drawing environment, namely simulating the integral assembly process of the door leaves. After various parameters are detected without errors, the three-dimensional model is generated into an engineering drawing ". Idw", the engineering drawing is subjected to dimension marking editing and the like and then is converted into an Auto CAD drawing, and the Auto CAD software is simplified to edit and obtain a part drawing ". Dwg" required by each manufacturing process. And (3) inputting the discharged part images into a control program of a numerical control cutting machine for automatic cutting and discharging, wherein the part images guide the manufacturing procedure of assembling and welding the parts into parts, and the whole assembly process of the parts on the arc-shaped platform. Because the blanking of the parts is controlled by the size and the shape of the assembly state, the assembly of the door leaves can reach the requirement just like building blocks are put at corresponding positions. The arc door leaves with high quality can be manufactured through proper welding procedures.
According to the invention, the traditional steel structure manufacturing is led by a digital technology, the three-dimensional model not only meets the requirement of blanking of a numerical control cutting machine, but also can guide the alignment position and size detection in the assembly process of the parts, so that the manufacturing process is easier to realize and control, the product quality is improved, the working procedure time is saved, and the labor efficiency is improved.
Hereinafter, a description will be given of an example of a radial gate of a spillway of a certain reservoir.
Fig. 9 is a schematic diagram of a radial gate design for a spillway of a reservoir: the arc door has the design radius R=10m, the thickness of the panel is 10mm, the width is 7960mm, the distance from the outer edge of the panel to the rear wing plate of the main beam is 900mm, the included angle between the upper main beam and the lower main beam corresponds to 4000mm of arc length of the outer edge of the panel, the center distance between the upper main beam and the lower main beam is 3616mm, the allowable error of the current specification is +/-3 mm, the arc length of the bottom beam of the door leaf top beam is 7500mm, and the arc length L=7754 is designed at the top end and the bottom end of the panel. The central angle 2α= 44.427147 ° corresponding to the arc length is designed at the top and bottom ends of the panel, and the gate leaf lofting radius R' takes 10045mm according to the curvature radius lofting formula calculation and factory manufacturing experience. The welding shrinkage arc length and the width direction of the door leaf are controlled according to 1/1000mm, the top beam bottom beam is a channel steel (14 b), the horizontal secondary beam is I14I-steel, the welding shrinkage is not added to the section size, and 20mm cutting allowance is added to the four sides of the door plate.
The invention is based on Autodesk Inventor Professional 2018 software three-dimensional modeling lofting, and the editing and simplification of the part graph are completed in AutoCAD 2018 software; the implementation process comprises the following steps.
Creating a septum.
It should be noted that, the middle partition beam is located in the middle of the arc door leaf, which reflects the structural characteristics of the horizontal beam system, and is convenient to edit, and can be converted into side partition beam and side beam parts after being modified later.
1.1, creating a two-dimensional sketch of a cross section of a middle beam.
In the sheet metal part environment, a side cross-sectional view of the plane of the arc door She Zhongge beam is created, and the cross sections of the panel, the bottom beam, the main cross beam, the horizontal secondary beam and the top beam, the profile line of the middle beam web and the cross section of the rear wing plate are drawn.
The method is realized through the steps of S101-S106: opening Autodesk Inventor software, clicking a new button on a first-level menu bar, popping up a new file dialog box, and creating a sheet metal part by using a door leaf structure as a welding part to select a sheet metal.
1.1.1, the unit precision is set only to display precision, and the drawing precision depends on the input numerical precision.
1.1.2, drawing a main beam central line and a rear wing plate:
in the sheet metal part environment, clicking a section of a ' three-dimensional model ' of a secondary menu bar to start to create a two-dimensional sketch ' command; newly creating a sketch on an xy plane, drawing a cross section of a middle beam in a door leaf design drawing, drawing a center line of a cross section of a lower main beam by using an arc door lofting radius R', positioning the right end at an original coordinate point, and restricting the position to be horizontal; and drawing the center line of the upper main beam, and marking an included angle theta between the two center lines:
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L=4000 mm, r' =10045 mm, and the included angle θ= 22.83845706 ° between the upper and lower main beams.
Clicking a "rectangle" drop-down menu on a "sketch" section, selecting a "rectangle three-point" command, respectively drawing two rectangles at any positions near the left end of a central line, marking the width and thickness dimensions of the section of a rear wing plate of the main beam, restricting the long side to be perpendicular to the central line in a bisection manner, and marking the left end of the central line as a distance between the panel thickness and the height X (1+1/1000) mm of the main beam.
Wherein 1/1000 is the welding shrinkage allowance; marking the lofting center distance of the rear wing plates of the upper main beam and the lower main beam after finishing, wherein the lofting center distance is larger than the standard upper deviation by 1-2mm; and when the welding shrinkage is not satisfied, the welding shrinkage is increased.
Description: the door leaves cannot shrink at all when being welded, and the center distance of the upper main beam and the lower main beam after the door leaves are welded reaches standard upper deviation, so that the door leaves are judged to be qualified; the intention of this step is to verify that the added weld shrinkage is appropriate.
It is emphasized that: the arc door She Fangyang refers to the angle value, and the calculated value of the 'theta angle formula' is the reference, but not the angle of the original design drawing.
1.1.3, drawing a panel arc:
the "arc" drop-down menu on the "sketch" section menu bar selects the "circle center arc" button, and the outer edge arc line of the door leaf panel is drawn by taking the sketch original coordinate point as the circle center and R' as the radius. The straight line command can be also adopted, firstly, the construction lines at the upper end and the lower end of the panel are drawn, the angles corresponding to the lofting arc lengths of the central lines of the upper main beam and the lower main beam are respectively marked, then, the outer edge arc line of the panel is drawn through the trimming command in the whole circle, and then, the panel is deviated inwards by one plate thickness, namely the inner edge arc line of the panel.
1.1.4, drawing the cross section of the main beam:
the cross section of the main beam is I-shaped, the cross sections of the front wing plate and the web plate are rectangular, a rectangle at any position is drawn through a three-point rectangle command, and the simplest command is obtained by marking the length and width dimensions and then restraining the rectangle to a specified position; of course, a closed quadrangle is drawn by using a straight line command, and the same effect can be achieved by constraining the position marking size, and the steps are complicated.
1.1.5, drawing a horizontal secondary beam section of a bottom beam top beam:
the bottom beam and the top beam are standard channel steel, the horizontal secondary beam is standard I-steel, and the section shape of the horizontal secondary beam is standard size; therefore, the CAD image block is created by inserting the CAD image block, the image block is "fried" into line segments after being inserted into Autodesk Inventor software sketch, and the shape and size constraints are required to be added again to be fixed into a whole for use. In the sheet metal part environment, the section steel section can be created by using the straight line and circular arc commands of the sketch layout, and the section steel section can be repeatedly used by copying and pasting.
1.1.6, drawing the profile of a middle beam web:
the middle partition beam web is arranged between the bottom beam and the lower main beam, between the lower main beam and the upper main beam, between the upper main beam and the top beam, and between the end head and the side face of the beam, the front edge is connected with the inner arc of the panel, a notch crossing the horizontal secondary beam needs to be reserved, and an inclined chamfer is required to be drawn at the right-angle welding seam and the arc of the cross section, so that interference during assembly is avoided. The bottom beam and the lower main beam, the lower main beam and the upper main beam, and the upper main beam and the back wing plate inner side end points of the top beam are respectively connected to form a back wing plate front plane straight line, and the cross sections of the middle partition beam webs form three sealing surface areas (an upper partition beam web, a middle partition beam web and a bottom partition beam web). The length of the middle partition beam web is approximately 4 meters, the door leaves are required to be manufactured in a segmented mode, and the middle partition beam web is further required to be divided into an upper section and a lower section for convenient transportation; the straight line of the front plane of the rear wing plate of the middle diaphragm beam is deflected backwards by a designed plate thickness to obtain the straight line of the rear plane of the rear wing plate, butt joint grooves are drawn at two ends of the straight line, a closed area is formed, and the drawing of the section of the rear wing plate is completed (see figure 1).
1.2 creation of septum Liang Moxing:
the operation is completed through the step S02: in particular to the use of a "stretch" command. The enclosed area can generate the entity by the modeling commands such as stretching, rotating and the like of Autodesk Inventor software, so each connecting line segment must be enclosed. When the entity cannot be generated, a sketch needs to be edited to check the line segment sealing condition. The septum Liang Moxing is created as shown (see fig. 2).
Creating side spacer beams.
The creation of the step A2 is completed without drawing the graph again, the created middle partition Liang Moxing is stored as an edge partition file, the edge partition file is opened again in a sheet metal part environment, the sketch is modified into an edge partition shape by using an edit sketch command, and the plate thickness, the width and the like in the stretching process are modified by using edit characteristics, so that the edge partition creation can be completed (see figure 3).
And creating side beams.
The creation is completed through the step 'A3', and the method is basically the same as the method for creating the side separation beam.
It should be noted that: the side beam has a front wing plate, and the arc line of the side beam web plate needs to be subtracted by one front wing plate thickness. The main beam and the horizontal secondary beam are arranged on the inner side of the side beam web, so that no notch is formed in the side beam web. The side sill model creation is complete (see fig. 4).
Creating a door leaf assembly.
And (3) transferring the middle partition beam, the side partition beam and the side beam parts created by the sheet metal part environment into the welding part environment, creating a door leaf assembly drawing for simulation assembly, and drawing the parts such as the bottom beam, the main cross beam, the horizontal secondary beam, the top beam and the like according to the position of the assembly state.
And 4.1, adjusting the parts into an assembly drawing.
And (3) completing the adjustment of the side beams, the side separation beams and the middle separation beam through the step T1-T2.
T1, side beam adjustment assembly drawing: opening Autodesk Inventor software, clicking a first-level menu 'new file' to select a 'Weldment.iam' template to create a sheet metal part on an initial interface (or a sheet metal part environment), and entering a welding part environment interface; clicking a button below an assembly section of the secondary menu bar, and selecting the created boundary beam to call in; clicking a constraint button, selecting a constraint type of 'surface flush', and respectively selecting the original coordinate system 'YZ, XZ and XY' planes of the assembly block to be aligned with the original coordinate system planes of the boundary beams one by one; the side beams are fixed in an assembly coordinate system.
T2, side separation beams and middle separation beams are adjusted into an assembly drawing:
the operation method is basically the same as the step of 'T1', and is different in that only the 'YZ, XZ' planes of the part coordinate system are leveled; the "XY" plane is offset from the original coordinate system XY plane of the assembly environment (design pitch + weld shrinkage of one thousandth). According to the design drawing size and welding shrinkage: side spacer deflection 1400× (1+1/1000) = 1401.4mm; septum beam deflection 3000× (1+1/1000) =3003 mm.
The side beams, side spacer beams and middle spacer beam positions are fixed in the assembly drawing by the flush or offset distance of the coordinate system plane.
And 4.2, creating bottom beam and top beam parts.
T301: the leaflet longitudinal center plane is created with a "offset from plane" command. And creating symmetrical parts of the side beam, the side spacer and the middle spacer at the other side through a mirror image command. The left key of the mouse clicks symmetrical parts of a middle partition beam and a middle partition beam in an operation interface 'model browser', and the right key menu is hidden before 'visibility', namely, hidden.
T302, creating a bottom beam and a top beam part: clicking the command of creating parts on the 'assembly' section menu bar, named as a bottom beam, and storing the parts in the same folder. And selecting a longitudinal center plane as a supporting plane to newly establish a sketch, enabling the sketch of the middle beam to be visible, projecting the contour line of the section of the bottom beam channel steel, and completing the sketch. The operation interface automatically returns to the 'three-dimensional model' section of the part environment, clicks a 'stretching' command of a menu bar, selects the section outline of the bottom beam channel steel, and 'determines' after the stretching 'range' selects the outer side surfaces of the rear wing plates of the left and right side beams, so that the creation of the bottom beam part is completed. Clicking a right-click menu on the drawing area by the mouse to finish editing, and automatically returning the welding part environment assembly layout by the operation interface.
Repeating the above operation steps to create the top beam part.
Description: autodesk Inventor software creates parts in the part environment 'assembly' layout, and after the parts are named and the storage positions are designated, the operation interface automatically enters the part environment 'three-dimensional model' layout. The subsequent operation is exactly the same as when the part is created.
T303, editing the top beam part; the inner side surface of the front wing plate of the boundary beam is in butt joint with the front corner limb of the top beam (channel steel), so that the end head of the top beam needs to be edited, and a corresponding gap is formed. Avoiding interference with the front wing plate of the boundary beam during assembly. And opening the top beam part stored in the folder to enter a part environment interface. Clicking a command of creating a two-dimensional sketch on a three-dimensional model block of a secondary menu bar, selecting the back surface of a top beam channel steel as a sketch plane, projecting an end line, and taking the corner limb line of the channel steel at the panel side as a construction line; drawing a rectangle at the end, wherein the long side of the rectangle is parallel to the projection line of the angle limbs, and the marking size is equal to the thickness of the front wing plate of the boundary beam plus 1mm; the short side of the rectangle is parallel to the projection line of the end, the distance from the short side of the marking inner side to the projection line of the end is equal to the embedded width +1mm of the front wing plate of the boundary beam, and the other short side of the rectangle exceeds the length of the end. Completing a two-dimensional sketch; the operation interface automatically returns to the 'three-dimensional model' edition, selects a 'stretching' command, selects two rectangular cross sections on the sketch to stretch, and clicks a 'difference' button in a Boolean operation mode to be 'determined'. And then selecting a chamfering command to chamfer the inner straight edge of the opening, and storing the closing part after finishing the editing of the top beam part (figure T03). The automatic updating can be completed in the assembly drawing.
Description: autodesk Inventor software "assembles" the part that the edition was created in the part environment, can edit directly in "assembling" edition "model browser", but the part of all around light and sound sight, so open the part and edit directly more succinctly.
4.3, creating a horizontal secondary side beam front wing plate.
T4, creating a horizontal secondary beam part:
the creation and editing steps of the horizontal secondary beam elements are essentially the same as the top beam except that the "stretching" ranges between the inner sides of the two beam webs. The operation according to T301-T302 is completed.
And T5, creating a boundary beam front wing plate.
Through the step T501, a front fender part of a side sill is first created. And the XY plane of the boundary beam coordinate system is selected as a supporting plane to create the boundary beam front wing plate, so that the interference of the light-display middle partition beam and the side partition beam can be reduced, and the inner edge arc line of the projection panel is facilitated. And (3) shifting the plate thickness of the front wing plate to obtain another arc line, and closing the two ends of the two arc lines by using a straight line to obtain the section of the front wing plate. And (5) stretching in a bidirectional asymmetric way to a design width to obtain the boundary beam front wing plate part.
T502 is symmetrical out of the front wing plate of the side beam at the other side through a mirror image command.
T6, creating a panel bottom edge reinforcing plate:
And selecting a longitudinal center plane as a depending plane to create a sketch, stretching a 'range' between the inner side surfaces of the front wing plates of the left and right side beams, and completing the creation of the bottom edge reinforcing plate part by the same operation of other steps.
4.4, creating an upper main beam part.
The upper main beam part is created by the T701 step.
Clicking the command of creating parts on the 'assembly' menu bar layout, named as the main beam, and storing the parts in the same folder. And selecting the longitudinal center plane as a supporting plane to newly establish a sketch, enabling the sketch of the middle beam to be visible, projecting the contour line of the cross section of the main beam, and completing the sketch. The operation interface automatically returns to the 'three-dimensional model' edition, clicks a menu bar 'stretching' command, selects the main beam section outline for stretching, and 'determines' after 'range' selects the inner sides of the left and right side beam webs, so that the main beam part is built. Clicking a right-click menu on the drawing area by the mouse to finish editing, and automatically returning the welding part environment assembly layout by the operation interface.
T702, editing a main beam part:
the main beam is a variable cross-section beam created in a maximum shape. Therefore, the part map modification is to cut away unnecessary portions first.
And opening the main beam part and editing the part environment interface. Newly-building a sketch on the web plane of the main beam, using projection ends and upper and lower wing plates as construction lines, drawing continuous folding lines of the cutting part by using a straight line command, marking the size and restraining the corresponding position of the construction lines, and closing the continuous folding lines into a surface area larger than the cutting part after finishing. Unwanted portions of the main beam ends are cut by "difference" of "stretch" commands.
The cut girder web bevel edge needs to be added with a rear wing plate, one end of the girder web bevel edge is connected with the side beam rear wing plate, and the other end of the girder web bevel edge is obliquely connected with the girder rear wing plate; the thickness and width of the rear wing plate at the joint of the main beam and the support arm are different, and the rear wing plate is respectively created through the operation steps of T07 (2)b).
And a step T702c, namely creating a sketch on the rear wing plate plane of the main beam, drawing a bolt round hole, and creating a main beam bolt hole by using a difference set of a stretching command. After one end of the main beam is modified, the other end is modified through a mirror image command. The main beam modification is completed (see fig. 5).
And 4.5, checking the clearance and interference condition of the door leaf assembly parts.
The parts created by assembling the door leaves are manufactured into solid parts, and the solid parts are assembled on the arc-shaped platform, so that checking whether the gaps between the parts are proper or not is a key procedure for ensuring the manufacturing quality of the door leaves, and avoiding interference.
And (3) highlighting all parts, and checking whether gaps exist between the horizontal beam system and the vertical beam system of the door leaf or the door leaf is interfered by the T9 step. Any two parts can be selected for inspection, and the part environment is returned for modification and perfection according to the inspection condition.
4.6, door leaf panel creation.
The final creation of the panel is convenient to observe the drawing and does not influence the line of sight. Completed by the "T10" operation step, the main component creation of the door leaf assembly of the arc door is completed (see fig. 6).
And creating an engineering drawing and an Auto CAD drawing of the three-dimensional model.
Engineering drawings are created at Autodesk Inventor in a software engineering drawing environment.
5.1 creating a door leaf assembly engineering drawing.
The door leaf assembly model is tuned into the engineering drawing by the step "V101".
And clicking a first-level menu 'new file' to select a 'Standard. Idw' template to create an engineering drawing and entering the engineering drawing environment at Autodesk Inventor software welding component environment interface. Clicking a button of a second-level menu bar for placing a basic view under a view layout, and selecting a door leaf assembly model to call in; the view direction selects a self-defined view direction, an operation interface automatically jumps to a three-dimensional model interface, a rear end plate of a lower main beam is selected as a viewing direction, a right mouse button menu finishes the self-defined direction, and the interface automatically returns to an engineering drawing environment; and selecting proper proportion in the engineering drawing popup window, and after the hidden line option is not displayed, "determining", completing the creation of the main view.
V102, creating a door leaf left view:
clicking a projection view button under a view placement section of a menu bar, selecting a right position point of a right movement of a main view, positioning a left mouse button, selecting a creation menu, and completing the creation of a left door leaf view.
V103, creating a portal beam cross-section:
clicking a cross section button under a section of a view placement section of a menu bar, selecting a front view of a door leaf, clicking a point at a proper position above the door leaf, vertically moving downwards to exceed the range of the door leaf, clicking a left mouse button termination section line, vertically moving rightwards to define a direction, clicking a right mouse button menu to continue, and clicking a left mouse button to confirm. The creation of the portal beam cross-section is completed. In the same way, a side cross-sectional view, a lower main cross-sectional view, etc. are created.
V104 editing the labeling graph:
on the Autodesk Inventor software engineering drawing environment interface, a secondary menu bar selects a 'marking' button to enter a dimension marking block, and a 'dimension' command is selected to mark an included angle between an upper main beam and a lower main beam, an included angle between a top beam and a horizontal secondary beam, an included angle between a bottom beam and a lower main beam and the like, so that the inner chord length of a panel can be directly marked for convenient measurement during assembly on an arc-shaped platform, and various control dimensions are required.
Selecting a symmetrical central line button in a menu bar section of the mark, clicking two side lines of a web plate of the main beam, and generating a central line of a cross section of the main beam; clicking two side lines of the horizontal secondary beam web plate to generate a central line of the horizontal secondary beam section. In the same way, the bisector of the required part, the center line of each view, etc. can be obtained.
Description: the precision of the engineering labeling size can be modified according to the requirement, the size is selected by a left button of the mouse, and the display digit can be modified by a precision command of a right button menu; the angle units are marked in degrees and minutes seconds by adopting templates, and the 'edit size style' command of the right key menu can be modified into a decimal system format.
V105, insert part list, lead part number:
selecting a BOM list button in a second-level menu bar of a welding part environment, selecting a BOM list export from a pop-up BOM list dialog box, storing the selected BOM list export on a pop-up window as a part list (xlsx) in the same folder, automatically generating a part list assembled by door leaves, editing the content of the list appropriately, and completing the insertion at a proper position of an engineering drawing.
Selecting an automatic leading-out serial number button on a section menu bar of the marking, selecting a placing mode and a leading-out serial number shape on an automatic leading-out serial number popup window, selecting a characteristic part of a marking part on a view, continuing a right button menu of the mouse, clicking a placing position on a left button, and selecting an application on the popup window. And automatically generating a part serial number of the door leaf assembly, and editing the leading-out serial number according to the list serial number. And (5) moving the leading-out sequence numbers to proper positions to perfect and beautify the view. Door leaf assembly engineering drawing creation is completed (see drawing V01). And storing the door leaf assembly engineering drawing (idw) in the same folder, wherein the engineering drawing is a follow-up file of the three-dimensional model, and the engineering drawing is updated and changed after the three-dimensional model is modified.
Description: in the engineering drawing environment, the second-level menu 'marks' layout 'detail list' can be inserted into the detail list of the parts, and editing and the like can be performed.
5.2, creating an Auto CAD graph of the door leaf assembly.
Auto CAD drawings of door leaf assembly were created by the "V2" step.
After the door leaf assembly engineering drawing is established, clicking a drop-down menu of a second-level menu bar 'file' on an engineering drawing environment interface, selecting a 'stored copy stored as' as a 'menu, and popping up the' stored copy as a 'window': selecting the storage type 'AutoCAD DWG file', 'proper version of the adjustment file' in option 'is completed', and generating and storing the portal assembly drawing (. DWG) format file in the same folder.
And V3, creating an engineering drawing and an Auto CAD drawing of the door leaf part.
The parts stored in the door leaf assembly folder are opened by Autodesk Inventor software respectively: a main beam, a bottom beam, a top beam, a horizontal secondary beam, a side separation beam, a middle separation beam, a side beam front wing plate and the like. Creating engineering drawings according to the operation of the step V01 and storing the engineering drawings in the same folder; and then operating according to the step V02, and obtaining the AutoCAD DWG file. The method of operation is substantially the same.
It should be noted that: clicking a 'file' drop-down menu in a secondary menu bar of the welding part environment, selecting a 'export' command, and directly converting the drawn door leaf assembly model into Auto CAD (dwg) stereogram, photo, three-dimensional PDF and the like.
Auto CAD software edits the graphics.
The created (. Dwg) format graphics are opened in Auto CAD software, the line type and the set layer can be changed, and the simplified graphics can be edited according to the process requirement. When the device is used for blanking of a numerical control cutting machine, the secondary welding shrinkage and the machining allowance are added to the width and length dimensions, and the size and shape of the graph are modified. Deleting the marked size and other unnecessary line segment patterns, reasonably discharging according to the specification of the steel plate, and inputting the steel plate into a control system of the numerical control cutting machine to cut the shape of the part. And the edited blanking diagram of the web plate of the side beam diaphragm main beam is shown in figure 7.
Description: the automatic CAD software is used for editing the graph, is mainly used for discharging and blanking parts, can make the changed graph into a graph fast, and is convenient for discharging to move.
In the invention, the lofting radius R' of the door leaf is firstly calculated according to a lofting formula of the curvature radius, the welding shrinkage of the arc door leaf is added according to 1/1000 arc length, the width of the door leaf and the height of the main beam are added with the same value, the welding shrinkage is not added to the section of the section steel beam, and the correction allowance of 20mm is reserved at the periphery of the door leaf. All the plate thicknesses are based on the drawing design. The secondary welding shrinkage when the main beam parts are assembled and welded into parts is increased, and welding allowance is added on a blanking diagram of the parts converted into CAD drawing; according to the characteristic of the arc door design door leaf structure, the longitudinal section shapes of the partition beams at the middle part of the door leaf and at different connecting positions of the main cross beam and the support arm are different, so that the partition beams are respectively established by dividing the partition beams into middle partition beams and side partition beams. Firstly, establishing a middle partition beam, an edge partition beam and an edge beam into a part model, and calling a part environment assembly block to establish other parts; the lofting process is based on Autodesk Inventor Professional 2018 software three-dimensional modeling, and editing and simplifying of part drawings are completed in AutoCAD 2018 software.
The edge beam, the edge separation beam, the middle separation beam and the door leaf assembly model obtained by the method mainly have the following purposes and effects:
1. the digital driving software is convenient for graphic modification, and the structure of the same type can be changed into a new part after being slightly modified, so that the workload of drawing is reduced. Such as edge beams, side separation beams, middle separation beams and the like of the arc gate leaves, only one part is needed to be established, and the arc gate leaves can be changed into another part for use through modifying sketches and modeling commands;
2. auto CAD pattern: the automatic CAD software is utilized to simplify graph editing, welding shrinkage, machining allowance and the like are added in the width-length direction, the graph is modified into a blanking process graph, after reasonable discharging is carried out according to different specifications of the steel plate, the steel plate is input into a numerical control cutting machine control system, and the size and the shape of the part can be directly cut; the blanking programming procedure is reduced. The parts are fed in the shape and the size of the assembly state, so that the size and the shape are more accurate, and the parts are directly used without correction when assembled, thereby improving the manufacturing quality and efficiency;
3. the engineering drawing and Auto CAD drawing can be directly printed to form paper board drawing for guiding the production process. Taking an engineering drawing and an Auto CAD drawing obtained by a door leaf assembly model as an example, because the main beam of the drawing is in a shape and size drawn at a simulated assembly position; the door leaf panel laid on the arc-shaped platform is drawn into an assembly line according to the size of the door leaf assembly state, and the main beam is placed on the arc-shaped platform after being manufactured and formed and aligned with the assembly line, so that the theoretical assembly state can be achieved. Unnecessary adjustment and correction in the assembly process are reduced, so that the workload and labor intensity in the assembly process are reduced;
4. The three-dimensional model of the parts of the door leaf structure can lead out a three-dimensional PDF file, and the rotation angle is moved to be observed in all directions, so that the three-dimensional model is used for technical mating before manufacturing, a worker can more easily understand the spatial three-dimensional structure of the door leaf of the arc-shaped gate, and unnecessary errors in the manufacturing process are reduced;
5. the relative position, length, angle, distance and the like of the parts can be measured by utilizing the detection function of Autodesk Inventor software, so that the dimension measurement, dimension detection and the like in the checking assembly process are guided, the quality control is easier to realize and ensure, and the manufacturing quality and the detection level of the door leaf are improved;
the method uses three-dimensional modeling of the arc door leaves, engineering drawings and Auto CAD drawings to lead the blanking of parts, and alignment, inspection, measurement and the like in the process of manufacturing parts and assembling the door leaves to provide direct technical guidance and theoretical reference for manufacturing procedures, facilitates the operation of each procedure, ensures the easier realization of manufacturing quality control, and has innovative and practical significance.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. A method for generating and manufacturing a zero part graph by arc door leaf digital model lofting is characterized in that the method is based on Autodesk Inventor software three-dimensional modeling lofting and obtains an engineering graph; generating a part map in an Auto CAD format through format conversion; after editing the part drawing, introducing a numerical control cutting machine to automatically cut and discharge;
the method comprises the following steps:
a1, establishing a middle beam;
a2, creating an edge separation beam: modifying the middle beam file to obtain an edge beam file;
a3, creating edge beams: modifying the middle beam file to obtain an edge beam file;
a4, creating a door leaf assembly;
a5, creating an engineering drawing of the three-dimensional model and an Auto CAD drawing;
a6, editing a graph by Auto CAD software: when the device is used for blanking of a numerical control cutting machine, the secondary welding shrinkage and the machining allowance are added to the width and length dimensions, and the size and shape of the pattern are modified; discharging according to the specification of the steel plate, and inputting the steel plate into a control system of a numerical control cutting machine to cut the shape of the part.
2. A method of manufacturing a zero-section map by digital model layout of arc door leaves according to claim 1, comprising the steps of, in step A1:
s1, establishing a two-dimensional sketch of the cross section of a beam in a portal by using Autodesk Inventor software;
S2, creating a septum Liang Moxing: after the sketch is completed, the three-dimensional model is obtained by 'stretching'.
3. A method of manufacturing a zero-section map by arc door leaf digital model layout generation according to claim 2, wherein:
in step A2, the following steps are included:
the middle beam model is stored as an edge middle beam file ". Ipt format"; different size shapes on the sketch are modified through an 'edit sketch' command, and different sizes generated by stretching are modified through an 'edit feature'; the shape and the size of the web wing plate of the middle diaphragm beam are changed into side diaphragm beams;
in step A3, the following steps are included:
the middle beam model is stored as a boundary beam file ". Ipt format"; different size shapes on the sketch are modified through an 'edit sketch' command, and different sizes generated by stretching are modified through an 'edit feature'; and after modification, the side beam is changed.
4. A method of manufacturing a zero-section map using digital model lofting of arc door leaves according to claim 3, wherein: in step A4, a door leaf assembly model is created on a software component environment interface;
the method comprises the following steps:
t1, adjusting the side beam into an assembly drawing; selecting a Weldment/iam template to create a sheet metal part, and entering a welding part environment interface; a button is placed under the 'assembling' plate, and the boundary beam is selected to be adjusted in and fixed in an assembling coordinate system;
T2, adjusting the side separation beams and the middle separation beam into an assembly drawing; a button is placed under the assembly plate, and the side separation beam and the middle separation beam are selected to be adjusted to the corresponding position of the assembly drawing and fixed;
t3, creating a bottom beam and top beam part;
t4, creating a horizontal secondary beam part;
t5, creating a boundary beam front wing plate;
t6, creating a panel bottom edge reinforcing plate;
t7, creating an upper main beam part;
t8, creating a lower main beam part;
t9, checking whether the door leaf horizontal beam system and the vertical beam system interfere or not;
and T10, door leaf panel creation.
5. A method of manufacturing a zero-section map by digital model layout of arc door leaves according to claim 4, comprising the steps of, in step T7:
t701, creating a main beam part;
t702, editing the main beam part;
a. cutting the end part of the main beam:
b. creating inclined wing plates of the main cross beam;
c. and creating a connecting hole of the rear wing plate of the main beam.
6. A method of manufacturing a zero-section map by digital model layout of arc door leaves according to claim 5, comprising the steps of, in step A5:
v1, creating a door leaf assembly engineering drawing;
v2, creating an Auto CAD graph of the door leaf assembly.
7. A method of manufacturing a zero-section map by digital model layout of arc door leaves according to claim 6, comprising the steps of, in step V1:
V101, transferring a door leaf assembly model into an engineering drawing: creating an engineering drawing, and selecting a door leaf assembly model to call in;
v102, creating a door leaf left view;
v103, creating a cross section of the portal beam;
v104, editing the labeling graph;
the 'size' command marks the included angle between the upper main beam and the lower main beam, the included angle between the top beam and the horizontal secondary beam, and the included angle between the bottom beam and the lower main beam, and generates the center line of the section of the main beam and the center line of the section of the horizontal secondary beam;
v105, insert part list, lead part number: the "export BOM table" is named part detail table, and the door leaf assembly engineering drawing and the door leaf assembly model are stored in the same folder.
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| CN202310581413.2A CN116796456A (en) | 2023-05-23 | 2023-05-23 | Method for generating and manufacturing zero part graph by digital model lofting of arc door leaf |
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