low cost CNC Router From SketchUp to CNC Fabrication This video series shows how to get from CAD, to CAM, to a CNC fabricated product. The tools we will be using are SketchUp for CAD, CamBam for CAM, Mach3 for gcode reading/CNC control, and a CNC router (greenBull from BuildYourCNC.com) for part fabrication. Keep in mind during this tutorial that the particular hardware/software tools, materials and application of these instructions will vary from person-to-person, region-to-region, and project-to-project. You may be using a different CAD program, CAM program, CNC control program, CNC machine, material sizes and fastening methods, and you will likely be fabricating a wide variety of products in the end. So, keep in mind that this tutorial is one of many different ways of going from CAD to final product. In this example, we will be fabricating a cart for our blackTooth laser cutter ( Notice that as we are modelling the separate pieces, they are made into components.
Neat CNC Router-Made Standing Desk Requires No Fasteners - CNCCookbook CNCCookbook Before there was metal, there was wood, at least in my shop. I didn’t get into CNC at that point in my life, many years ago, but I was way into custom cabinetry. I always admired the Japanese designs that required no fasteners–everything was held together through a cunning combination of tension and pegs. Someday I hope to get a CNC Router table going in the shop and return, at least a little bit, to doing some projects in wood. Meanwhile, I do enjoy seeing what others are up to with their CNC Routers. This article is about a neat little standing desk that requires no fasteners. These neat little desks are 100% made in America of maple plywood using a process the makers call “Digital Manufacturing:” 3D printing and digital manufacturing have the potential to redefine what it means to be “Made in America”. Bravo to them on the ideal that we can start making things locally again. Desktop CNC Trends: From Cobbled Together to 3D Printers In "3D Printing" In "Beginner"
noiz architects: morphing furniture feb 05, 2010 noiz architects: morphing furniture noiz architects: morphing furnitureall images courtesy of noiz architects japan and taiwan-based noiz architecture, design and planning were recently commissioned to design a cultural salon for taiwan land corporation to enhance the corporate identity of the company. the design theme of the project was ‘transformation’. along with designing the new interior the firm developed furniture for the salon, which followed with this notion of transforming. their morphing table and chairs are derived from iconic pieces of modern designed furniture. the forms morph from one typology of a chair or table into another in one continuous form. profile of a morphing panton chair originally designed by verner panton profile of the tulip chair by eero saarinen morphing into the zig-zag chair by gerrit thomas rietveld overview of the morphing table profiles of the morphing tables and chairs the different chair and table typologies that were used
Stepper Quickstart Gather information on steps and gearing. The result of this is steps per user unit which is used for SCALE in the .ini file. Steps per revolution - is how many stepper-motor-steps it takes to turn the stepper motor one revolution. Typical is 200. Micro Steps - is how many steps the drive needs to move the stepper motor one full step. If microstepping is not used, this number will be 1. The net result you’re looking for is how many CNC-output-steps it takes to move one user unit (inches or mm). Example 1. Stepper = 200 steps per revolution Drive = 10 micro steps per step Motor Teeth = 20 Leadscrew Teeth = 40 Leadscrew Pitch = 0.2000 inches per turn From the above information, the leadscrew moves 0.200 inches per turn. - The motor turns 2.000 times per 1 leadscrew turn. - The drive takes 10 microstep inputs to make the stepper step once. - The drive needs 2000 steps to turn the stepper one revolution. Example 2.
DIY 80/20 Aluminum Extrusion CNC Machine | 8020CNC.com Joining | Dog Bone | makeLab™ A Dog Bone Joint is a friction fit joint used to join two pieces of sheet material. Typically, dog-bone joints are made using a CNC machine. They are called dog-bone joints because the corners are rounded out and resemble a cartoon-like bone. Your choice of cutting material Wood, MDF, etcDesired Rhino/PartWorks File CNC MachineScrew DriverScrews EarplugsSafety GlassesDust Mask Power blast dust from machineUse dustpan and mop to clean up floor CONTINUE ON TO STEPxSTEP PROCESS
CNC Workflow: SketchUp, MakerCam, Universal Gcode Sender | Jays Custom Creations The actual information that a CNC machine uses to determine where to move is called G-code. There are many ways to not only transfer the G-code to the CNC but also to actually generate the G-code. Today I’m going to show you a simple workflow that can be used with SketchUp, MakerCam, and Universal G-code Sender. There might be some better programs out there that can do it all but the main objective here is to get control of both the design phase and the tooling phase without spending money on expensive programs. Designing exactly what you want in SketchUp The benefit of designing in SketchUp is its incredibly easy to work with and it has great accuracy. Export Faces To SVG Plugin. After making sure all of the faces we need are on the same plane (they don’t technically have to be, it just makes things easier) we can select the faces to export and click on our Export Faces To SVG plugin (download link at the end). Defining exact toolpaths in MakerCam.com Downloads
FabHub - Digital Fabrication Hub Stepper motors Intro Stepper motors enable precise positioning without needing sensors to measure motor position. Each pulse to a stepper motor turns its shaft one step which for many steppers is 3.6 degrees. One hundered pulses will turn a 3.6 degree stepper exactly one revolution. Finding a stepper motor Stepper motors are available new, from surplus houses, or can be pulled from old electronic equipment such as floppy drives. Look for "unipolar" or "4-coil" or "4-phase" motor (they all mean the same thing) with 5 or 6 or 8 wires. Key specs are operating voltage (12V is convenient for robotics projects), and either coil current or coil resistance (given one spec you can get the other from V=IR). If you are pulling a motor from an old floppy drive, look for a flat motor with five or six leads. Identifying stepper motors If you are staring at a pile of stepper motors in a surplus shop, or have pulled one out of used equipment, here's how you can determine what you have. Next, read the label on the side.
DigiRout low cost CNC Router Gear template generator program The gear template generator program is a program for printing paper templates for cutting out gears. It can do everything that the online gear template generator can do, and much more. Things that the offline gear template generator can do: Involute spur gears (spur, ring, and rack) Planetary gear sets (using ring gears) Calculate small gear tooth undercut shapes Lantern / cycloid gear pairs Block chain and roller chain sprocket calculations Print gears across multiple pages Show grids with diagonals to help align multi-page printouts Support for metric and inches dimensions Right angle gear mode see hereNo internet connection required Export DXF, HPGL, CSV, Sketchup, PDF and bitmaps For more details, see the Online help or watch the Demonstration VideoThe doumentation is also available in French but the program is English only System requirements: Windows XP, Vista, or 7 or 8.
Backlash in Lead Screws: What It is and What to do About It What is Backlash? Take a large machine screw and thread a nut onto it. Now hold the head of the screw between the fingers of one hand and hold the nut between the finger of the other. Backlash is a measurable quantity. The problem with backlash is that it can impose positioning error in a positioning system. What Can Be Done About Backlash? There are a number of ways of dealing with backlash in a linear positioning system. Ignore it If the positioning accuracy requirement of the system you are designing is less than that of the backlash in the linear drive components you intend to use then the backlash can simply be ignored. This is a good place to discuss the backlash specifications of various screws that could be used as linear positioning devices in shop-built machines. Applications which need linear positioning in machines that will see heavy and continuous duty will generally make use of Acme threaded rod and Acme nuts. Software Backlash Compensation The software works like this.