Creating a drawing in Compass–Graph

Course work

In the discipline “Design and technological informatics”

Option number 5

on the topic: Designing a part of the “Wedge” type in a software environment

Compass 3D V14

Checked by Knyazev S.N.

Made by Gavrilov N.V.

student of group B04-711-2zt

IZHEVSK 2016

Content

Introduction……………………………………………………………………………………3

1 Task…………………………………………………………………………………..5

2 Progress of work…………………………………………………………………………………6

2.1 Creation of a 3D model…………………………………………………………………6

2.2 Creating a drawing in Compass-Graph……………………………………………10

2.3 Printing.………………………………………………………………….12

Conclusion……………………………………………………………………………………..13

References ………………………………………………………………….

Appendix А…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Introduction

The work of a modern designer is almost impossible to imagine without the use of computer-aided design systems. Indeed, the use of a computer allows not only to simplify the development process and speed up the final result, but with their help it is possible to automate many stages of development. The capabilities of modern CAD make it possible to detect flaws already at the stage of creation and avoid many typical mistakes, which ultimately leads to an increase in the reliability of design and construction.

For this purpose, the Ascon company has developed the Compass 3D program. This program has now become a very powerful product, with which the creation of a product becomes a simple task and allows the developer to concentrate his efforts on the development process itself. To date, the program allows not only to design models of parts and assemblies, but also to create all the necessary documentation, drawings, technical requirements.

The key feature of KOMPAS-3D is the use of its own mathematical core and parametric technologies developed by Ascon specialists

The basic functionality of the system includes: advanced 3D modeling tools; tools for working on projects that include several thousand subassemblies of parts and standard products; functionality for modeling parts from sheet material – commands for creating a sheet body, bends, holes, blinds, flanges, stampings and cuts in a sheet body, closing corners, etc. as well as performing an unfolding of the resulting sheet body (including the formation of an associative unfolding drawing); special features that facilitate the construction of casting molds – casting slopes of the parting line of the cavity according to the shape of the part (including with the task of shrinkage); means of creating surfaces; tools for creating custom parametric libraries of typical elements; the possibility of obtaining design and technological documentation. The built-in system “KOMPAS-Graph” allows you to issue drawings of the specification of the scheme of the table; text documents; the ability to set dimensions and designations in three-dimensional models (support for the GOST 2.052–2006 ESKD standard. Electronic model of the product “); support for the Unicode standard; integration tools with various CAD / CAM / CAE systems; means of protecting user data of intellectual property and information constituting commercial and government secret (implemented by a separate software module “KOMPAS-Protection”).

A simple intuitive interface, a powerful help system and a built-in interactive training guide “ABC KOMPAS” allow you to master the work with the system in the shortest possible time and without effort.

To automate the development and release of design documentation, Ascon offers a universal computer-aided design system KOMPAS-Graph that allows you to quickly produce product drawings of the specification scheme, various text documents, instruction tables and other documents. Flexibility of system settings and a large number of application libraries and applications for “KOMPAS-Graph” allow you to close almost all user tasks related to the release of technical documentation. The KOMPAS-Graphic system provides the widest possibilities for automating design work in various industries and is successfully used in machine-building design during design and construction work, drawing up various plans and schemes.

Exercise

Make a drawing of a part using the Compass 3D V14 software environment. To do this, first create a 3D model of the part shown in Figure 1, according to the dimensions given in Table 1. Then, using the resulting 3D model, draw a drawing in two projections.

Figure 1 – Parametric drawing of a given part

Table 1 – Parameters of specified components

Working process

Creation of a 3D model

Launch the Compass 3D program by double-clicking on the icon on the desktop. To create a new part, execute the command File – New, In the New Document window, specify the type of the document to be created Detail and click the “OK” button. Right-click anywhere in the model window. From the context menu, execute the “Properties” command. We click in the “Designation” field on the “Property Panel” and enter MiTOMDiSP, this will be the designation of the part. We click in the “Name” field and enter the name of the “Wedge” part. Go to the tab “Parameters of the ICC”. To set a material, on the “Material Name” panel, press the “Select” button and select the desired material from the list of materials. To exit the mode of determining the properties of a part with saving the data, press the “Create object” button on the “Special Control Panel”.

The new document must then be saved to a data carrier in a specific folder and given a name. To do this, click the Save button in the Standard panel. After making sure that the “Name” field is filled with data from the model properties, click the “Save” button, and the document will be saved to disk.

Let’s start building the part by creating the base. The construction of the base begins with the creation of its flat sketch. To build a sketch of the base, select one of the standard projection planes. In the Model Tree, expand the “branch” Origin of Coordinates by clicking on the “+” sign to the left of the branch name, and specify the XY plane (frontal plane). The plane icon will become highlighted. Click the Sketch button on the Current State panel. The system switched to the sketch editing mode, the XY plane became parallel to the screen, and the item “Sketch 1” appeared in the model tree. Press the button “Geometry” on the “Toggle panel”. The toolbar of the same name opens below. On the “Geometry” panel, press the “Segment” button and draw a closed contour of the part, it can be seen in the front view (Fig. 1). We will start constructing segments from the center of coordinates.

Now you need to specify the dimensions of the resulting contour using the drawing (Figure 1) and table 1. To do this, click on the “Dimensions” toolbar and press the “Linear Dimensions” button. The dimensions are set as follows: at the ends of the segments, click the pointer, setting points 1 and 2 from which the size will then be set aside. We right-click and, in the expanded context menu, select the orientation of the size position (parallel to the object, vertically or horizontally). Click the left mouse button and specify the size value in the “Expression” field and click “OK”. Set the rest of the dimensions in the same way. Sketch drawing 1 took the following form (Figure 2)

Figure 2 – Sketch 1 with dimensions

Let’s close the sketch. To do this, click the “Sketch” button again. Press the button “Operation” extrude on the “Editing” panel. A phantom of a three-dimensional element appeared on the screen, this is a temporary image showing the current state of the object being created. Enter the number 24 in the “Distance 1” field on the Property Bar. Press the “Enter” key to fix the value. Press the “Create Object” button on the “Special Control Panel” – the base of the part is built.

The next step is to build holes. Press the “Scroll” button on the mouse and moving it, rotate the image of the part so that it is possible to select the bottom area on which the holes will be made. After selection, press the right mouse button and select the item “Normal to” in the context menu. Turn on sketch editing mode. Click the Circle button on the Geometry panel. Let’s draw four circles with centers approximately in the same places as in the drawing (Figure 1). Click on the “Diameter dimension” button on the “Dimensions” panel and set the diameter dimensions of the circles. Let’s set the dimensions between the centers of the circles, to do this, click on the “Linear Dimension” button on the “Dimensions” panel. Now you need to align the circles with the centerlines of the rectangle. To do this, press the “Align” points vertically button on the toolbar and click on the centers of the two left and then two right circles connecting them with dashed lines. The circles are aligned vertically, similarly align them horizontally. Let’s set the dimensions from the center of coordinates to the nearest circles. Exit sketch editing mode by clicking the Sketch button on the View panel. Activate the part editing panel and click on the “Cut by extrusion” button. Check the status of the Construction Direction field to make sure it is set to Forward Direction. Open the “Build type” list and select “Through all”. Click the “Create Object” button on the “Special Control Panel”. In the field of the part, we observe how four through holes were formed in the part.

Now let’s make bevels. Click the Wireframe button on the View panel to show all the edges of the model. By pressing “Ctrl” on the keyboard, select four edges on which you need to chamfer. Release the “Ctrl” button. The specified edges will be highlighted in the model window. Press the “Round” button and hold down the mouse button and select the Chamfer mode. Let’s enter a value of 10 mm. The value will appear in the “Length 1” field on the “Property Bar”. Let’s make sure that the reference field on the “Property Bar” displays information about the selection of four edges. Click the “Create Object” button. The chamfers are ready, switch the view from Wireframe to Halftone.

Let’s create an auxiliary plane. Select the plane of the base on which the holes were drawn. Click on the Auxiliary Geometry button, then on the Offset Plane button. Let’s choose the offset direction, in our case the reverse one, and enter a distance of 24 mm. Click the “Create Object” button.

On the created plane, click with the mouse to highlight it with color, click on the Sketch button, and also, in the context menu, on the Normal to tab. Activate the Geometry toolbar and click on the Circle button. We create four circles with centers in the already created sketch circles 2. We put down the dimensions of the diameters of the circles. To do this, press the “Diameter dimension” button on the “Dimensions” toolbar and mark the circles, one by one entering the values of the “Expression” field to set the dimension values. Click the Extrude Cut button on the Part Edit panel. Let’s check the state of the “Construction direction” field and make sure that the direct direction is set. Open the Build Type list and select “Through All”. Click the “Create Object” button on the “Special Control Panel”. This completes the construction of the 3D part, now you can proceed to the creation of views.

Let’s orient the part model so that it takes the position of the main view in the drawing, it is more convenient to do this using the keyboard by pressing “Ctrl” + arrow. In our case, you do not need to do this, just select the standard top view by clicking on the triangle next to the “Views” button. Now click on the Orientation button itself and in the View Orientation window, click the Add button. Enter a name for the projection (for example, “Main view”) and click the “OK” button. Save the model to disk by clicking on the “Save” button. The appearance of a three-dimensional part is shown in Figure A 1.

Creating a drawing in Compass–Graph

To create a new drawing, execute the command File – New. Specify the type of the created document “Drawing” and click the “OK” button. A new drawing window will appear on the screen. Let’s save the drawing on disk under the name “Wedge” in the same folder as the 3D model file. Click the Document Manager button on the Standard panel. Click on the sheet options bar on the right side of the Document Manager window. Expand the list of formats and specify A4. Let’s press the “OK” button.

Now, after creating all the necessary views, the drawing needs to be drawn up: put down dimensions and technological designations in it, draw axial lines, build hole center designations, etc. An associative link is formed between the drawing and the model: any change in the model will be automatically displayed on the drawing. If it is necessary that dimension values and their position in the drawing, as well as the position of technological symbols, change automatically when the model is changed, then for this the design of the drawing must be performed in the parametric mode. This will allow you to form associative links between geometric objects and design elements.

Enable the “Parametric Mode” button on the “Current State” panel. Click the “Standard Views” button on the “Views” toolbar and click the “From File” button and specify the position of the part on disk. On the “Property Bar” select the image orientation for the main view – the custom orientation “Main View” created in the model. Click the “View Scheme” button to select the desired views. Select Front View and Top View and click OK. Let’s choose a scale of 1:2. On the Properties panel, open the Lines tab and enable the Show button in the Hidden Lines group. Specify the position of the views on the drawing with the mouse. As a result, the indicated views were built, and the columns of the title block were filled with data from the 3D model.

Place the cursor on the dotted frame of the “Front” view. A dotted box is a sign of an associative view, that is, a view associated with a 3D model. It is not printed and is a view control. Press the left mouse button and, without releasing the keys, drag the view up to the free space. Because the views are in a projection relationship, this view can only be moved in the vertical direction.

Let’s make the front view current. On the Current State panel, expand the View State list and select view number 1. One of the drawing views is current. All new objects are created in the current view and then belong to this view. Therefore, if we want to work with a particular view (set dimensions in it, add symbols, etc.), we must make this view current.

On the current view, let’s start dimensioning. Click the “Auto Size” button on the “Dimensions” panel. We set the dimensions by indicating two points in the places from which they are deposited. Where it is necessary to set the diameter, or specify the size tolerance, press the “Linear dimension” button of the “Dimensions” panel and edit the dimension panel. We put down the angular dimensions. Selecting the “Angular Dimension” of the “Dimensions” panel, mark with the target the segments between which you need to set the dimension. If necessary, on the “Size” panel, select the desired type of angle (minimum, maximum, angle greater than 180°). Any dimension in the drawing can be moved or moved by selecting it with a left mouse button click and moving it by reference points.

Double click on the dotted frame of the top view to make it current. On the Geometry panel, click the line segment button. In the “Style” tab, select the “Axial” line type. In the drawing, we draw a line of symmetry of the part, as well as the axial lines of the holes. We apply linear dimensions in the same way as in the front view. Where it is necessary to set the quality, or specify the size tolerance, click the “Linear dimension” button of the “Dimensions” panel and edit the dimension panel.

Activate the Symbols toolbar and click on the Roughness button. We put the roughness icons in the right places by editing the text of the inscription and clicking “OK”. Let’s add an unspecified roughness. Let’s execute the command “Insert” – “Unspecified roughness” – “Enter”, put a tick on “Add a sign in brackets”, edit the text (enter Ra 6.3), click “OK”. Let’s add technical requirements. Let’s execute the command “Insert” – “Technical requirements” – “Enter”. On the opened blank sheet, we will print the points of technical requirements according to the task. With the command “Insert” – “Technical requirements” – “Placement”, insert the technical requirements into the drawing, drag them with the mouse to the right place.

Double-click on the main inscription to activate it to adjust the inscriptions. Let’s enter the group (B04-711-2zt) and the names of the developer and inspector. Let’s set up the system in such a way that the “Scale” column of the main inscription is filled in automatically. To do this, execute the command “Service” – “Options”. Open the “branches” “Graphic Document” – “Document Options” – “View”. Enable the option “Create a reference to the scale in the title block”. We press the “OK” button.

Printout

It remains to print the drawing. Click the Preview button on the Standard panel. An output field appeared in the main window – several sheets of paper of a certain size and orientation. The output field displays the document itself, its dimensions and orientation. The Properties panel displays the name of the active document, the current image scale and the coordinates of the base point of the document sheet. By default, the document is printed at a scale of 1:1, we will not change anything here. Based on the image in the “Output Box” and the data in the “Message Line”, the current document cannot be printed on a single A4 sheet at 1:1 scale, a total of 4 pages are required. This is the result of the presence of “dead zones” in the design of the printing device. We need to fit it on one A4 sheet, so we will determine the optimal print scale.

Run the command “Tools” – “Fit Scale”. Let’s set the number of pages horizontally to 1. In the preview window, the image has been redrawn in accordance with the new scale. To start printing, press the “Print” button on the “Control Panel”. The resulting detail drawing is shown in Figure A 2.

Conclusion

In the course of work, we got acquainted with the basic methods of working in the KOMPAS-3D V14 software environment. We built a three-dimensional model of the part of the “Wedge” type, then, using this model, we created two projection views of the drawing of the part and printed it out. We can say that KOMPAS 3D is a full-fledged computer-aided design system and is quite suitable for developing both simple and complex drawings, part models, etc. There is a simple and clear interface. KOMPAS-Graph automatically generates associative views from 3D models (including sections, sections, local sections, local views along, views with a gap). All of them are associated with the model: changes in the model lead to a change in the image in the drawing. Standard views are automatically built in projection relationship. The data in the title block of the drawing (designation name mass) is synchronized with the data from the 3D model.

Bibliography

1 Compass. [Electronic resource]. – Access mode: http://kompas.ru/publications/docs/. – Educational materials. – (Date of access: 02.02.2016).

2 Wikipedia. [electronic resource]. – Access mode: https://ru.wikipedia.org/wiki/Ascon. – (Date of access: 02.02.16).

3 Ascon. [electronic resource].– Access mode: http://forum.ascon.ru/.– (Date of access: 02.02.16).

APPENDIX A


Figure A1 – 3D model of the part


Figure A2 – Drawing of the detail “Wedge”

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