AutoCAD More commands and practice drawings ~ Ourengineeringlabs

AutoCAD More commands and practice drawings

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POLYLINE

Purpose: Draws a series of connected line segments.

Syntax: PLINE <start_point> <end_point>

Example: PLINE 0,0 50,50 100,0

ARC

Purpose: Draws an arc defined by a center point, start angle, and end angle.

Syntax: ARC <center_point> <start_angle> <end_angle>

Example: ARC 0,0 10 0 90

ELLIPSE

Purpose: Draws an ellipse with specified parameters.

Syntax: ELLIPSE <center_point> <major_axis_length> <minor_axis_length>

Example: ELLIPSE 0,0 50 30

SPLINE

Purpose: Draws a smooth curve through a series of points.

Syntax: SPLINE <point1> <point2> ...

Example: SPLINE

0,0 10,20 20,0

HATCH

Purpose: Fills an enclosed area or selected objects with a pattern or solid fill.

Syntax: HATCH <boundary> <pattern>

Example: HATCH <boundary> "ANSI31"

AutoCAD Practice Drawings

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Tin-Smithy viva questions and answers page 2

Q: What are some essential tools used in tin smithing? A: Some essential tools used in tin smithing include tin snips, hammers, mallets, soldering irons, soldering flux, soldering paste, tinsnips, stakes, anvils, shears, and bench vices. Q: Can you explain the purpose of tin snips in tin smithing? A: Tin snips are used in tin smithing to cut and shape tin sheets. They have specially designed blades that are capable of making clean and precise cuts in the metal. Q: What is the role of hammers in tin smithing? A: Hammers are used in tin smithing for various purposes, such as shaping, forming, and planishing tin. Different types of hammers, such as ball peen hammers, cross-peen hammers, and planishing hammers, are used to achieve specific effects and textures on the tin surface. Q: What is the function of a soldering iron in tin smithing? A: A soldering iron is used in tin smithing to heat and melt solder, which is then used to join pieces of tin together. It provides the necessary heat ...

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Viva questions and answers about CNC (Computer Numerical Control)

Q1: What is CNC? A1: CNC stands for Computer Numerical Control. It is a technology that uses computerized systems to control machine tools and automate manufacturing processes. Q2: What are the advantages of CNC machining? A2: Some advantages of CNC machining include: Increased precision and accuracy in manufacturing. Improved efficiency and productivity. Greater flexibility in producing complex parts. Reduced human error and increased repeatability. Ability to automate manufacturing processes. Enhanced safety for operators. Q3: How does CNC differ from traditional machining? A3: CNC differs from traditional machining in that it uses computerized control systems to operate machine tools. Traditional machining relies on manual operation, while CNC machines can execute precise instructions based on digital design data. Q4: What are the primary components of a CNC system? A4: The primary components of a CNC system are: Machine tool: The physical equipment such as a lathe, mill, or router....

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Isometric drawings for practice in AutoCAD

What is Isometric Drawing? Isometric drawing is a method of visually representing three-dimensional objects in two dimensions. It allows for a clear and comprehensive depiction of complex structures by keeping the scale consistent and eliminating distortion. Isometric drawings use a 30-degree angle from the horizontal in all three axes (X, Y, and Z), creating a pseudo-3D effect where the height, width, and depth are equally foreshortened. Creating Isometric Drawings in AutoCAD AutoCAD provides tools and settings that make creating isometric drawings straightforward. Here’s a step-by-step guide: Step 1: Set Up Isometric Snap/Grid 1. Enable Isometric Snap/Grid: - Type `SNAP` in the command line and press `Enter`. - Type `Style` and press `Enter`. - Choose `Isometric` and press `Enter`. 2. Switch Between Isoplanes: - Type `F5` or `CTRL+E` to toggle between the top, right, and left isoplanes. Step 2: Draw Isometric Circles and Arcs 1. Isom...

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AutoCAD practice parts for Learners

Hi all! The below table contains some of the AutoCAD practice drawings with step by step procedure links. please visit the links to see all details of the draiwngs. Practice drawing Details Remarks Intoduction to AutoCAD Procedure steps in AutoCAD. Procedure in YOUTUBE. Download AutoCAD drawing files. You have any projects or quaries please contact us! Basic settings of drawing in AutoCAD Procedure steps in AutoCAD. Procedure in YOUTUBE. Download AutoCAD drawing files. You have any projects or quaries please contact us! Drafting settings in AutoCAD Procedure steps in AutoCAD. Procedure in YOUTUBE. Download AutoCAD drawing files. You have any projects or quaries please contact us! ...

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FEA on Tension bracket using Solidworks

Finite Element analysis on tension bracket using solidworks 1. Create the solidworks 3D model using part modeling tool of solidworks. 2. Now start simulation tab. Then assign material to the component and assign fixed constrain on back side surface of the tension bracket. Then assign Force to the circular cut vertically. the Stress plot is shown above The displacement plot show above. The Factor of safety plot shown above. The Tension bracket component in 3D dimension isometric view along with dimensions.

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Welding-TEE FILLET JOINT

Ex. No : Date : TEE FILLET JOINT Aim To join the given two work pieces as a ‘Tee fillet joint’ by arc Welding. Material used Mild steel plates. Tools required • Welding power supply • Flat file • Welding rod • Chipping hammer • Electrode holder • Wire brush • Gloves and apron • Earthing clamps • Shield and goggles Procedure The given workpieces are thoroughly cleaned, i.e. rust, scales are removed and the edges are filed. The electrode is held in an electrode holder and ground clamp is clamped to the welding plates and the power is supplied. The workpieces are positioned on the table to form a “Tee fillet joint”. The tag weld is done on the bo...

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sheet metal 2

Straight snip:- For cutting along straight line, straight snip is used whose blades are straight. It is used to cut 22 S.W.G or lighter. To cut sheets of greater thickness lever shearing m/c is used. Hollow punch:- When circular holes are to be cut in the sheet then hollow punch is used for thin sheets. The sheet should be placed over the wood or thick block of lead to avoid chipping of edges of the punch. Chisels:- These are generally used in sheet metal shop for cutting sheets, rivets and bolts. Taper stake:- It is used for rounding of tapering jobs such as conical jobs. Hose stake:- There are two square holes for holding two stakes at a time for carrying out different operations. Half Round Stake:- It is used for pressing round seam joint on inner side. Grooving stake:- It is made up of forged steel and is used to make grooves of different sizes. Grooves are made to impart strength. Soldering iron:- Soldering iron is composed of a heated metal tip and an insulated handle. Heat...

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Welding-LAP JOINT

Ex. No : Date : LAP JOINT Aim To join the given two work pieces as a lap joint by arc welding. Material used Mild Steel plates. Tools required Welding power supply Flat file Welding rod Chipping hammer Electrode holder Wire brush Gloves and apron Earthing clamps Shield and goggles Procedure The given workpieces are thoroughly cleaned, i.e. rust, scales are removed and the edges are filed. The electrode is held in an electrode holder and ground clamp is clamped to the welding plates and the power is supplied. The workpieces are positioned on the table to form a “Lab joint”. The tag weld is done on the both the ends of joining plates to avoid the m...

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Fluid mechanics VIVA QUESTIONS and ANSWERS

1. Define density? Ans: It is defined as the ratio of mass per unit volume of the fluid. 2. Define viscosity? Ans: It is defined as the property of fluid which offers resistance to the movement of fluid over another adjacent layer of the fluid. 3. Differentiate between real fluids and ideal fluids? Ans: A fluid, which is in-compressible and is having no viscosity, is known as ideal fluid while the fluid, which possesses viscosity, is known as real fluid. 4. What is a venturimeter? Ans: It is a device which is used for measuring the rate of flow of fluid flowing through pipe. 5. What is a notch? Ans: A notch is a device used for measuring the rate of flow of a fluid through a small channel or a tank. 6. Define buoyancy? Ans: When a body is immersed in a fluid, an upward force is exerted by the fluid on the body. This upward force is equal to the weight of the fluid displaced by the body. 7. Define meta-centre? Ans: It is defined as the point about which a body...

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Coordinate systems in AutoCAD

World Coordinate System (WCS), User Coordinate System (UCS). There is 4 AutoCAD coordinates system you should know. Absolute coordinate system , Relative Rectangular coordinate system, Relative Polar coordinate system and Interactive system(Direct coordinate system). Absolute Coordinate system: Absolute Coordinates uses the Cartesian System to specify a position in the X, Y, and (if needed) Z axes to locate a point from the 0-X, 0-Y, and 0-Z (0,0,0) point. To locate a point using the Absolute Coordinate system, type the X-value, Y-value, and, if needed, the Z-value separated by commas (with no spaces). Syn: Enter LINE command: L [Enter] Start line at point A: 0,0 [Enter] End first line at point B: 2,2 [Enter] End of second line at point C: 2,3 [Enter] Examples shown bellow. Relative Rectangular Coordinate system: After first points entered, your next points can be entered by specifying the next coordinate compare/relative f...

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