CN104252558B

CN104252558B - A kind of non-standard construction fender member digital control processing preprocess method based on BIM platform

Info

Publication number: CN104252558B
Application number: CN201410309471.0A
Authority: CN
Inventors: 孙澄; 杨阳; 夏楠; 曲大刚; 杨子孚
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2014-07-02
Filing date: 2014-07-02
Publication date: 2016-02-24
Anticipated expiration: 2034-07-02
Also published as: CN104252558A

Abstract

The present invention proposes a kind of non-standard construction fender member digital control processing preprocess method based on BIM platform, by the pre-service of building geometric shape, building structural component unit Deepen Design, process data process and output three steps, solve the problem of information loss between each sub-process in non-standard form building enclosure component NC Machining Process, and non-standard structural element two dimension detail drawing with associate transfer problem between three-dimensional model.

Description

A kind of non-standard construction fender member digital control processing preprocess method based on BIM platform

Technical field

The present invention relates to a kind of digital control processing preprocess method, be specifically related to a kind of non-standard construction fender member digital control processing preprocess method based on BIM platform.

Background technology

Over nearly more than 50 years, the fast development of digital technology impels scientific thought to there occurs major transformation, people to the thinking of Traditional Scientific normal form constraint break through by emerging complexity science.The chaos that current era Form of Architecture stream becomes and complexity features present polynary, heterogeneous and uncertain, and people start to create based on the Shaping language of nonlinear science ideation composing.At technical elements, architectural image platform is the surface modeling system of the seventies by the wire modeling System Development of the sixties, and breaches Solid Modelling bottleneck, finally develops into the parametrization Solid Modeling System of Solid of today.

The progress of scientific theory and Modeling Technology has inspired the creation of non-linear Form of Architecture, and the processing and manufacturing demand of building non-standard fender member is improved greatly.Because the form and different scale of building non-standard fender member are large, processing mold is of a great variety, and traditional machining manufacture is difficult to reply, and therefore Digital manufacturing manufactures the main path in order to produce non-standard fender member.But in the Digital manufacturing manufacture process of the non-standard fender member of building, still there is following problem: in the NC Machining Process of non-standard form building enclosure component, the model treatment method disunity of each sub-process, information loss is larger; The two-dimentional detail drawing of part non-standard structural element still needs manual modification, cannot ensure the accuracy of member unit.

Summary of the invention

The present invention proposes a kind of non-standard construction fender member digital control processing preprocess method based on BIM platform, solve the problem of information loss between each sub-process in non-standard form building enclosure component NC Machining Process, and non-standard structural element two dimension detail drawing with associate transfer problem between three-dimensional model.

The present invention includes following step:

Step one, the pre-service of building geometric shape

(1) body surface is split: main employing UV structure lines split plot design, input the horizontal and vertical lattice number of the graticule mesh of setting or ruling distance in Revit or Grasshopper platform after, utilizing UV dividing function with bi-directional configuration wire grid by curved surface body auto Segmentation, revising further by adjusting the alignment thereof of grid, the anglec of rotation and side-play amount subsequently.

(2) member unit is made: in BIM platform, create member unit with the form of race, its visioning procedure is preliminary setting, creates race's framework, definition same clan type, creates primitives, solid is constrained in reference plane, arranges visibility parameters, preserves newly-built race and be loaded into project renewal and test.Same clan's type of building enclosure component is defined as curtain wall panel class, make " curtain wall grid " in the reference plane of model midplane and facade and project that auto-associating occurs, arrange based on model, will the geometric figure circumference line of panel be formed be locked in 4 reference plane (left and right, top and bottom) of facade.

(3) member unit is embedded surface mesh: be attached on surface mesh node by the panel member that back makes counterclockwise according to the number order of self-adaptation point, embedded by " repetition " functional realiey batch again, according to self-adaptation point to the automatic trace performance of the geometric graphic elements such as reference line, make race's component intelligently with body or body surface mesh change and automatically adapt to.

(4) two dimension association launch member unit: in Revit or Grasshopper platform by the Report Parameters of adaptation function and formula variable and conditional statement drive, realize component two dimension association launch.

Step 2, building structural component unit Deepen Design

(1) the thin portion of designed component unit and additional material information: create material from " material browser " or " Material Editor ", to the pane units additional materials attribute of geometric format.

(2) determine the processing border of member unit: in detail drawing deepening process, based on the Revit platform being technical characterstic with " group ", namely boundary line is processed to all outline lines and confirm and pick up; When frame selects all visual objects, adopt Revit pel isolation features to be shown separately by the pel of identical same clan type, namely the working view in conjunction with orthogonal projection determines machining profile, directly derives DWG file and is used for plane drafting in-depth.

(3) machining information of member unit is marked: be set to actual components measure-alike by the formula relationship of each Report Parameters in the size marking in building cell panel member race, obtain and build the size marking linking and change.

Step 3, process data process and output

(1) Classified into groups member unit: after each typonym pre-defined, distinguished by the different materials ingredient with adhesion property by the mode of nested race, uses filtering function be separated and be retained in newly-built view interface in batches.

(2) preliminary typesetting jacking: first in AutoCAD, sheet material is pressed 1: 1 scale according to figure paper size, then utilize this DWG graphic file process to generate and singly cut program accordingly, again these programs of singly cutting are arranged generation number on the sheet material of fixing specification and cut program, and number is cut program input cutting machine, so that realize robotization cutting.

(3) process data of output link unit is associated: first derive the drawing file comprising machining profile line, then adopt the pel under Revit platform and all kinds of attribute information of architecture information binding function ancillary statistics, the same period realizing component information statistics detail list and drawing file exports; The processed file of final output comprises the two dimension layout drawing of component and the information detail list of whole member unit.

Advantage of the present invention is: propose a kind of building enclosure component numerical control machining preprocessing method based on BIM platform and process step, determine between each sub-process and model treatment method between the inner different platform of sub-process, make the information loss between each flow process minimum; Adopt the technological means of 2 d plane picture and three-dimensional entity model associated modification, improve accuracy and the Graphic Exchanging efficiency of non-standard structural element unit.

Accompanying drawing explanation

Fig. 1 is based on the building enclosure component digital control processing pretreatment process framework of BIM platform.

Embodiment

Step one, the pre-service of building geometric shape

Step 2, building structural component unit Deepen Design

Step 3, process data process and output

Claims

1., based on a non-standard construction fender member digital control processing preprocess method for BIM platform, it is characterized in that comprising the steps:

Step one, the pre-service of building geometric shape

(1) body surface is split: main employing UV structure lines split plot design, input the horizontal and vertical lattice number of the graticule mesh of setting or ruling distance in Revit or Grasshopper platform after, utilizing UV dividing function with bi-directional configuration wire grid by curved surface body auto Segmentation, revising further by adjusting the alignment thereof of grid, the anglec of rotation and side-play amount subsequently;

(2) member unit is made: in BIM platform, create member unit with the form of race, its visioning procedure is preliminary setting, creates race's framework, definition same clan type, creates primitives, solid is constrained in reference plane, arranges visibility parameters, preserves newly-built race and be loaded into project renewal and test; Same clan's type of building enclosure component is defined as curtain wall panel class, make " curtain wall grid " in the reference plane of model midplane and facade and project that auto-associating occurs, arrange based on model, will form on left and right, top and 4, bottom reference plane that the geometric figure circumference line of panel is locked in facade;

(3) member unit is embedded surface mesh: be attached on surface mesh node by the panel member that back makes counterclockwise according to the number order of self-adaptation point, embedded by " repetition " functional realiey batch again, according to the automatic trace performance of self-adaptation point to reference line geometric graphic element, make race's component intelligently with body or body surface mesh change and automatically adapt to;

(4) two dimension association launches member unit: driven by the variable in the Report Parameters of adaptation function and formula and conditional statement in Revit or Grasshopper platform, and the two dimension association realizing component launches;

Step 2, building structural component unit Deepen Design

(1) the thin portion of designed component unit and additional material information: create material from " material browser " or " Material Editor ", to the pane units additional materials attribute of geometric format;

(2) determine the processing border of member unit: in detail drawing deepening process, based on the Revit platform being technical characterstic with " group ", namely boundary line is processed to all outline lines and confirm and pick up; When frame selects all visual objects, adopt Revit pel isolation features to be shown separately by the pel of identical same clan type, namely the working view in conjunction with orthogonal projection determines machining profile, directly derives DWG file and is used for plane drafting in-depth;

(3) machining information of member unit is marked: be set to actual components measure-alike by the formula relationship of each Report Parameters in the size marking in building cell panel member race, obtain and build the size marking linking and change;

Step 3, process data process and output

(1) Classified into groups member unit: after each typonym pre-defined, distinguished by the different materials ingredient with adhesion property by the mode of nested race, uses filtering function be separated and be retained in newly-built view interface in batches;

(2) preliminary typesetting jacking: first in AutoCAD, sheet material is pressed 1:1 scale according to figure paper size, then utilize this DWG graphic file process to generate and singly cut program accordingly, again these programs of singly cutting are arranged generation number on the sheet material of fixing specification and cut program, and number is cut program input cutting machine, so that realize robotization cutting;