CNC-1240 INSTALLATION & SET-UP SET-UP CLEARANCES & CONDITIONS When considering the permanent location for your SmithyCNC bed mill the following should be taken into consideration: The machine should be installed on a flat surface so that the machine does not rock or slide during operation. This location should be considered the machine s permanent location for your machine. If you need to move it, remove it from the stand first. Make sure your stand is level prior to placing the machine on the stand. Improper installation and an unleveled machine can cause both numerical error and loss of precision in your machining operation. The maximum temperature of your shop or working environment should not exceed 125 ºF. Humidity levels should not exceed 80%. Set up the bed mill stand so you have plenty of working space. Leave at least 3 to 4 feet of clearance on the operating side of the machine. Note the suggested clearances of the other sides of the machine in table 4.1. Figure 4.1 Set-up Clearances SmithyCNC 1240 Operator s Manual CNC 1240 Mill A Dimension B Dimension C Dimension D Dimension 83 in 20 in 67 in 81 in 2110 mm 500 mm 1700 mm 1700 mm Table 4.1 Clearance Dimensions POWER REQUIREMENTS Voltage Amps Amps CNC 1240 Mill 220 15 Single
Power Requirements 220 Plug Configuration The power cord/plug that is supplied with the SmithyCNC EZ-Trol System and SmithyCNC PC Control option is a 220 volt NEMA 6-15P plug. This plug will fit into a 220 volt NEMA 6-15R or 6-20R receptacle. NOTE: Smithy recommends that you run your machine on a dedicated 20 amp breaker. STAND REQUIREMENTS You will need a stand that is capable of supporting the weight of your machine plus the maximum allowable workpiece depending on your bed mill. (Please refer to the specifications chart for the bed mill that you ordered to obtain this specification.) You will also need to add into this figure additional weight for work holding devices, cutters and coolant. A good rule is to build a stand that can support 5 to 6 times the weight of the machine without any appreciable, permanent deformation. The benchtop should be rigid, level and well-supported. If you purchased one of the optional bed mill stands available from Smithy, these stands have been designed to support the weight of the specified machine. Your work bench should be located in a vibration-free area with a floor that is designed to support the full weight of the bench, machine, accessories, and materials. If you purchased the optional Smithy Stand (Item 80-040 for the CN-1240 Mill then the holes for mounting your machine are pre-drilled and tapped. If you are making your own stand use the bolt pattern below. NOTE: The mounting holes in the base of the machine are 10 mm. DANGER SmithyCNC strongly discourage the use of casters or wheels on metalworking machine stands. The weight of the machine could result in the stand tipping while being moved. Once the machine is mounted, consider your work bench to be permanent. If you must move the machine, first remove it from the bench. 4.4 LEVELING Before any machining of the workpiece is done, it is crucial to level your machine for best results. Step 1: Find a relatively flat place for the installation of the machine and place the machine stand in this spot taking note of the suggested clearance in table 4-1. Step 2: Position the X & Y axes slides as close to the mid-stroke position as possible. The X & Y axes can be repositioned manually with the knurled wheels at the end of the axes screws (For leveling purposes, position of the Z axis is not as crucial as the X & Y axes slides). Figure 4-4 : Level Shown parallel to the Y-axis.
Step 3: Make sure your stand's feet or leveling pads are touching the ground at the same time. If not, adjust the feet to make sure the machine stand does not physically rock. Step 4: Once all the feet or leveling pads are touching the ground and the machine is not rocking, adjust the middle two feet (on both sides of the machine) off the ground by about ¼ inch while the front and rear feet are on the ground. NOTE: Pictures shown in this document SmithyCNC 1240 Operator s Manual Step 3: Place an appropriate size rod through the lifting hole in the base of the column at the back of the machine. See Figure 4.7. Step 4: Place an end of the rod through one loop of the a tow strap. Step 5: Clip the other end of the tow strap into the clevis/eye hook at the front of the machine. Be certain to secure the clevis before lifting. Figure 4.8 Close up lifting strap, clevis and eye hook Figure 4.9 Moving with a Forklift Step 6: Repeat step 5 with another tow strap on the opposite side of the machine. Step 7: Slide the tow straps over the forks and slowly raise the machine from the pallet. Before raising the machine high enough to place on the machine stand, check to make sure the machine is relatively level. If it does not appear level, lower the machine back to the pallet and adjust the tow straps so that the machine is balanced.
Installation & Set-up Figure 4.10 Engine Hoist Spreader correctly positioned for lifting SmithyCNC Mill Step 8: Now that the machine is relatively level, raise the machine so that it is hovering, no more then 6-10 inches, over the machine stand. Step 9: Using a straight rod (all-thread works well) to align the holes in the base of the machine to the holes in the stand. Align one corner on the front and one on the back. Step 10: Once the holes in the machine are aligned with holes in the stand, slowly lower the machine into position on the stand. Step 11: Secure the machine to the stand. (See the section in this document, securing machine to the stand.) Figure 4.11Chain Hook Up when using an engine hoist Or visit www.smithy.com
SmithyCNC 1240 Operator s Manual Using an engine hoist to remove the machine from the pallet Figure 14.12 Lifting with an engine hoist Step 1: Using an engine hoist requires 2, 6 feet pieces of chain and 4 clevis pins large enough to attach the links of the chain that you are using together. Remember to select chain that is rated for lifting the weight of your machine. NOTE: If you are renting an engine hoist make sure you are given the cradle/spreader plate that attaches to the arm of the engine hoist. Step 2: Attach a clevis to each of the two eye hooks located on the base of the machine forward the operator s side. Step 3: Place an appropriate sized rod through the lifting hole in the base of the column at the back of the machine. Step 4: Position the cradle/spreader so that the chains are hanging on either side of the millhead. Once the plate is attached to the hoist it should hang between the millhead drive motor and the Z- axis drive motor. Step 5: Place the chain around the rod extruding from the back of the casting so that there is enough chain to attach one end to the clevis which is locked into the eye hook at the front of the machine. Step 6: Attach the section of chain circling the bar extruding through the casting as well as the section of chain attached to the eyehook, to the chains hanging from the hoist spreader. Note: Before lifting the machine, check the chains to see if they will be pushing against any sheet metal part. If the chains are rubbing or pushing against any sheet metal parts, reposition the chains in order to prevent damage. It may be helpful to open the millhead motor door before attaching the chains to the hoist spreader. Step 7: Repeat step 5 and 6 on the other side. Call Us Toll Free 1-800-476-4849
Installation & Set-up Step 8: Attach the hoist spreader to the arm of the engine hoist if you have not done so already, and slowly raise the machine from the pallet. Check to make sure that the machine is relatively balanced between the front and back of the machine. If it is leaning too far to the front or the back, lower the machine back to the pallet and reposition the chains to achieve a better balance. Step 9: Now that the machine is relatively balanced, raise the machine so that it is hovering over the machine stand. Step 10: Using a straight rod (all- thread works well) align the holes in the base of the machine to the holes in the stand. Aligning one corner on the front and one on the back. Step 11: Once the holes in the machine are aligned with holes in the stand, slowly lower the machine into position on the stand. Step 12: Secure the machine to the stand. (See the section in this document, securing machine to the stand.) ATTACHING THE MACHINE TO THE STAND Now that your machine is in place, it is important to properly secure it to your machine stand. If you purchased a stand from Smithy, the holes in the stand are pre-drilled and tapped. If you make your own stand, please refer to the bolt pattern at the end of this document. These instructions assume that you have assembled your stand per the manufacturer instructions. Step 1: Once the holes in the base of the machine are aligned with those in the stand, secure the machine to the stand with the bolts provided with your Smithy stand. Step 2: If you have ordered the Kool-Catch Coolant Containment system with your machine, please follow the assembly instructions included with the Kool-Catch system. ATTACHING THE X & Z AXIS MOTORS The Z and X-Axes motors have been removed for shipping. Once the machine has been secured to the stand, re-attach the motors with the provided cap screws and couplings. Attach the cable leading out of the junction box to the motor. INSTALLING YOUR CONTROL BOX
Now that your machine has been set-up, you are ready to install your control system. If you purchased a SmithyCNC EZ-Trol system or PC Ready System, please refer to the documentation sent with your control. If you have purchased the base machine, we have supplied you with the a set plugs that match the sockets on the junction box of the SmithyCNC bed mill that you purchased. You will be able to use these to wire your control system of choice to your bed mill. Please reference chapter of this manual for pin-out information.