~~DISCUSSION~~ ====== CNC Induction ====== In this induction you will learn * the safe operation of the Multicam CNC router * what you can achieve with router. * how to prepare a simple design for fabrication. * how to assign tool paths and export for the router. * Cutting and finishing your job. * how to identify problems and what to do when problems occur. ====== Requirements ====== * An State Library membership. * Closed footwear. * Participants must be over 16 years of age ====== Safe Usage of the CNC Cage ====== * The Edge staff supervisor to be present **at all times** * A Hot Work Permit must be in place **at all times** * Machine be used by inducted participants only. * No person other than the operator or other authorized persons should be in the working area ===== General Personal Safety ===== * {{ :facilities:fablab:ohs:sop:edge_sop-cnc_router_controlled.docx |SOP for Multicam CNC}} * Enclosed footwear must be worn at all times. * No loose or dangling jewelery or ID cards * Long hair or beards must be tied up * Avoid loose fitting clothing * Personal Protective Equipment (PPE) must be worn when operating, supervising or observing the router in operation. * {{ :facilities:fablab:ohs:sop:edge_sop-manual_handling_controlled.docx |SOP}} for Manual handling of materials ===== Machine Safety ===== * When machine is running, keep clear of any rotating or moving parts eg. the cutting bit, spindle moving gantry and head parts. * Do not lean on machine whilst in operation. * Parts of the machine , particularly cutting bits, will get hot so you may need gloves when handling/ or changing tooling. * Maintain a clean workspace-check that the gantry and rails for tooling/materials left behind. * Clean up as you work. The machine does the messy work for you to clean up! * Use the right tool for the job. Different tooling pieces have a specific purpose and material. ====== Safety - Emergency Stop ====== The CNC is fitted with an emergency stop. {{ :mobileupload:mick:20170603:20170603_123505.jpg?nolink&200 |}} This can be activated to bring the machine to an immediate stop in an emergency. **Note -if the machine is turned OFF mid operation, wait 1 minute to turn ON. After activating emergency stop, needs to be homed. ** ====== Safety - Operator Hazards ====== The CNC router is capable of **directly** causing death or serious injuries, including amputations, fractures, de-gloving, lacerations, contusions and crush injuries. The hazardous parts of the machine are: ==== The spindle ==== * The spindle spins at up to 18,000 rpm - capable of cutting at over 10 metres/minute (m/m) * through metal * (or flesh) * The bit takes at least 20 seconds to come to a complete stop. * Every time. * Even if you touch it. * The bit can fracture, break or shatter. * A bit rotating 18,000 RPM will fly out about 50 km/hr * at your eyeball ==== The Gantry and Machine Head ==== The gantry can move at over 10 meters/min and weighs over 100 KG. It can hit with enough force to knock a person over, or trap and mangle a limb. ===== Safety - Damage to Machine ====== * The vacuum bed is soft aluminium. If it is damaged the machine is unusable. * Drill bits are brittle, and will shatter or crack if dropped on concrete. * The router will cut through metal clamps and screws ===== Main parts on CNC machine ===== * Machine bed - with vacuum suction * Steel Gantry - X axis * Machine head - Y and Z axis * Spindle - routing bits and collets spins at 16000rpm average * Controller panel - Manually control the gantry and load jobs * Inverter enclosure- DO NOT OPEN! High Voltage. Main on/off switch is located here. * Vacuum Pump manifold - four sections can be isolated to increase vacuum. ====== Machine Operation ====== ===== Router Preparation ===== * Remove the waste cover board if required (2 person lift) * Check over the wasteboard for rough and uneven spots and sand down using scour pad * Use compressor to blow dust away. ===== File Preparation ===== The induction contains a introduction to VCarve to become familiar with creating tool paths and design orientation. We are going to make a simple stool from pre designed DXF files * Tool paths are demonstrated on predesigned shapes * Sending files to ouput so the CNC can fabricate ===== Prepare Files ===== Export your file as a DXF, PDF and the original format. ===== Vcarve ===== As of August 2017 we have moved to using Vcarve for inductions. You can download Vcarve Pro and authorize it with The Edge's makerspace code. **86B4F-F467A-280D9-9F4C6-9C56B-4C528-BEE6F** ==== ==== Create a new document {{ :facilities:fablab:inductions:multicamcnc:vcarve01.png?direct&200 |}} ==== ==== Define the Job {{ :facilities:fablab:inductions:multicamcnc:vcarve02.png?direct&200 |}} ==== ==== Make sure your material dimensions match your Job dimensions. For the inductions we use use a 2400x1200x17mm sheet. Measure all dimensions on the sheet! {{ :facilities:fablab:inductions:multicamcnc:vcarve03.png?direct |}} ==== ==== Ensure your Z Zero position is the **Machine Bed** {{ :facilities:fablab:inductions:multicamcnc:vcarve04.png?direct |}} ==== ==== Import your first DXF shape with the correct thickness from the {{ :facilities:fablab:inductions:multicamcnc:asgard_stool_17.7-17.9mm_thickness_h300mm_d250mm_t10.zip |zipped}} files. Drag and drop one file at a time. {{ :facilities:fablab:inductions:multicamcnc:vcarve05.png?direct |}} ==== ==== We need to check if the vectors need to be joined wtih the **join** tool. {{ :facilities:fablab:inductions:multicamcnc:vcarve07.png?direct |}} ==== ==== If you see open vectors, close them. {{ :facilities:fablab:inductions:multicamcnc:vcarve08.png?direct |}} ==== ==== Your shape should be solid black {{ :facilities:fablab:inductions:multicamcnc:vcarve09.png?direct&400 |}} ==== ==== Import your next shape - if it has separate parts - group to move all together. {{ :facilities:fablab:inductions:multicamcnc:vcarve13.png?direct&400 |}} ==== ==== You Can move them easier using the move tool {{ :facilities:fablab:inductions:multicamcnc:vcarve14.png?direct |}} ==== ==== {{ :facilities:fablab:inductions:multicamcnc:vcarve15.png?direct&400 |}} ==== Create Tool Paths ==== The router follows the tool paths to cut. - Right click on shape outline (or select from left menu) - Click Create toolpaths - Select routing type - Routing offset this is for whole, complete shapes with no breaks. Cuts around the edge of the shape. - Internal (female) cuts inside the shape. - external paths (male) cuts outside the shape. - Island Fill/Island Hatch - removes all material **inside** an area. - Engrave Paths - single lines that don't join to make a shape (appear with a small arrow) ==== Tool Type ==== Select the tool type you would like to use -For the induction we use either a 10mm 2 flute compression. You can import the entire {{ :facilities:fablab:software:vcarve:edgetooling.zip |edge tooling}} database into your version of Vcarve. ===== Depth, Feeds, Plunge and Speeds ===== These are the settings which the router uses to operate. It is up to you to set them, then the supervisor to double check any existing settings. ==== Depth ==== Set the depth in the path dialogue. * Depth - How far **above** the bottom of the waste board the router starts its cut. * Currently add an additional 0.3mm below your material thickness * This may change after each service and/or waste board planing, your supervisor * If your material is 17mm thick (make sure to measure) then the cut depth should be 17.3mm Your supervisor will help you select the correct feeds and speeds for your job. ==== Feeds, Plunge and Speeds ==== In the tool 'edit' menu set: * Feed - How FAST the router moves in the x,y dimensions. This is a constant linear speed in millimetres per minute (mm/min) * Feed rate = Number of cutting edges x chip per tooth x RPM * Plunge - How FAST the router move in the z dimension //into// the work material. * Speed - This is the rotation speed of the router bit on Revolutions per Minute (RPM) Click Save as.. if the tool path will be repeated or Ok when done ===== Moving Designs to Machine ===== ==== Sending Jobs to the Multicam ===== * Open the Multi Cam App Manager * Select File Manager * select Connect -Note CNC Machine must be on to connect * Once connected ,select your saved job and select the arrow to move to machine ===== Loading a Tool ===== Changing the tool is an operation only to be carried out by a Fabrication Lab Supervisor. ===== Loading the Router ===== * Load material onto the waste board. * Align with bottom left corner of the bed * Press TAB 1 * Load job using the folder button * Check the job preview ==== Cutting with the Router ===== * **Don PPE** * turn on bed suction * Turn extractor * start the job - the job will verify * if preview fails abort and review Enroute settings * Start cut with green button ===== While machine is operating ===== * Wear PPE!!! * Observe the machine in operation * Operator only inside yellow safety line ==== Pausing a Cut / Clearing Debris ==== If a piece is moving or get stuck in the extractor. * Pause the cut with the red stop button * Wait for the machine head to withdraw * Watch the controller * Wait for the spindle to stop * Watch the spindle - verify it has stopped. ====== Use emergency stop if necessary ====== ** Note -if the machine is turned OFF mid operation, wait 1 minute to turn ON. ** ==== Cleaning Up ==== Move the machine head clear Use the extractor as a vacuum to clean debris Turn of the vacuum bed remove your job blow off bed with compressed air sand back wasteboard ======Files====== {{ :facilities:fablab:inductions:multicamcnc:dxf_18.2mm_asgard.zip |}} {{ :facilities:fablab:inductions:multicamcnc:dxf_17.5mm_asgard_250_300.zip |}} {{ :facilities:fablab:inductions:multicamcnc:asgard_stool_17.3mm_thickness_h300mm_d250mm_t10.zip |}} {{ :facilities:fablab:inductions:multicamcnc:asgard_stool_17.9mm_thickness_h300mm_d250mm_t10.zip |}}