Thank you for purchasing a 3DTek.xyz Heavy Mill.

Please allow for several solid days in build and tune to get the Heavy Mill ready for use. Don’t rush – try to enjoy the build process.  

Having an online guide will enable the use of videos and easily updated content.  If there is any part of this build you think needs more documentation attention or clarification – please email [email protected] or place a comment in the new Heavy Mill area of the discussion forum.

Precautions

  • Please note – this is not an appliance – it is an industrial tool.
  • The construction and use of this machine poses many hazards to your safety.
  • This is not a tool to be left running unintended, as you would not leave any other power tool operating in your absence.
  • As for all power tools, Loose clothing / hair etc should be secured before approaching the machine.
  • Get used to wearing glasses when in the vicinity of this machine. Milling bits and other debris do get thrown from the machine.

 ELECTRIC SHOCK!

 The VFD, and power supplies pose significant risk to your safety.

  • A licensed electrician should commission these items.
  • These items should be enclosed in a grounded or otherwise appropriate enclosure and kept clean of dust and moisture.
  • The machine should be installed on a circuit that is protected by an RCD and breaker

 VFD (Variable Frequency Drive) also Known as VSD (Variable Speed Drive) aries the frequency of the output from the 50hz its supplied to within the range of 0-400HZ in order to manage speed of the spindle.

This device has large capacitors, which can hold a charge for quite some time. Your electrician must commission this and the other power supplies on your behalf.

 

Kit Contents

Contents of the kits vary depending on the options selected at time of purchase.

The base kit consists of:

Anodized Plates:

Plate Parts Description QTY
SCP Spindle Carriage 1
YPA Y_Plate_Type_A 2
YPB Y_Plate_Type_B 2
XHP_Top X Horizontal Top 1
XVP_Front X Carriage Plate Front 1
XVP_Back X Carriage Plate Back 1
XHP_Bot X Horizontal Bottom 1
XHP_Mid X Horizontal Mid 1
XMP X Motor Plate 1
YMP Y Motor Plate 2
XPP X Pulley Plate 1
YPP Y Pulley Plate 2
BCT Belt Clamp Top 3
BCB Belt Clamp Bottom 3
YCP Y Carriage Plate Left 1
YCP Y Carriage Plate Right 1

 Plate Parts

 

Aluminium Extrusions:

Extrusions

Part Description 1000mm Qty 1500mm Qty
4040 Rail 4040 Rail – Base Structure 4 6
X Axis Rail 8080 –  Tapped Both Ends M8 * 15mm 1 1
Y Axis Rails 40120 –  Tapped Both Ends M8 * 15mm + Drilled & Counter bored holes. 2 2
XDGRail X Axis Drag Chain Support Rail 2040 T Slot 1 1
YDGRail Y Axis Drag Chain Support Rail 2040 Tslot 1 1

 

If you chose the T-Slot bed option, the following extrusions will also be included 

Part Description 1000mm Qty 1500mm Qty
Bed Tslot 15180 – Tslot Bed Extrusion – If bed option taken 3 5
Bed TslotLeftSide 15180 –  4-6 holes – if bed option taken 1 1
Bed TslotRightSide 15180 –  4-6 holes – if bed option taken 1 1
T-SlotTeeExtrusion T-Slot Connectors – if bed option taken 4 6

Water Block Strip

12×3 MM Alloy Flat Bar strip

1 1

 

Linear Motion

Part Description 1000mm Qty 1500mm Qty
WC20 WC20 Hiwin Linear Bearing Blocks 6 6
Hiwin HG20 Hiwin Linear Rail – ~990 / ~1490 mm 2 2
Hiwin HG20 Hiwin Linear Rail – ~1100 / ~1490 mm 2 2

Part Description 1000mm Qty 1500mm Qty
HSS 16mm hardened Steel Shaft 225mm 2 2
PB Pillow Bearing Blocks SC16LUU 2 2

Hardware

Assembly / Use Code Description 1000mm Qty 1500mm Qty
Z Axis Lead Nut LN Delrin ACME Lead Nut 1  
Belt Clamp Bottom and Stepper Motors BHCS-M5x25 M5 x 25 Button Head Cap Screws 18  
X Stepper Motor BHCS-M5x25 M5 x 20 Button Head Cap Screws 4  
Belt Clamp Top SHCS-M4x25 M4 x 25mm Scoket Head Cap Screws 6  
Bolting together X Carriage and other smaller plates FSHCS-M5x20 M5 x 20mm Countersunk 28  
Some shorter FHCS as several thread bores are shallower FSHCS-M5x16 M5 x 16mm Countersunk 10  
Motor Plates, Pulley Plates FSHCS-M5x20 M5 x 20mm Countersunk 18  
Drag Chain Extrusions BHCS-M5x45 M5 x 45 Button Head Cap Screws 6  
Drag Chain Mount BHCS-M5x16 M5 x 16 Button Head Cap Screws 4  
Drag Chain Mount M5TeeNut 8  
Dragin Chain and Mounts BHCS-M5x12 M5 x 12 Button Head Cap Screws 8  
Dragin Chain and Mounts M5Nylock M5 Nylock 8  
Dragin Chain and Mounts BHCS-M4x12 M4 x 12 Button Head Cap Screws 4  
Dragin Chain and Mounts M4Nylock M4 Nylock Nut 4  
Hiwin Bearings In X Axis Plates FSHCS-M6x20 M6 x 20mm Countesunk 8  
Hiwin Bearings In Y Axis SHCS-M6x20 M6 x 20 Socket Head Cap Screws 16  
Hiwin Bearings In Y Axis M6Star M6 Star External Star Washer 16  
Hiwin Bearings In Y Axis M6Spring M6 Split/Spring washer 16  
Idler Pulley Axels BHCS-M5x30 M5 x 30 Button Head Cap Screws 3  
Idler External Pulley Spacer 5Spacer 5mm Alloy Spacer – 5mm bore 3  
Idler Bearings – Two per idler Ibear 5×16×5 Bearing 625 2RS 6  
Idler Internal Spacer 1Spacer Custom Spacer/Washer 3  
Securing Hiwin Rail to TeeNutBar through Tslot SHCS-M6x20 M5 x 20 Socket Head Cap Screw  70 100
Securing Y Rails to Base SHCS-M8x40 M8 x 40 Sutton Head Cap Screw 8 12
Securing Bed Extrusions and drip tray M6TNut M6 Tee Nuts 29 53
Securing Drip Tray BHCS M6x12 M6 x 12 Button Head Cap Screws 5  
Shaft Grubs Screws BHCS-M3x10 M3 x 10 Button Head Cap Screws 4  
Securing Spindle into Mount SHCS-M8x30 M8 x 30mm Socket Head Cap Screws 2  
Spindle Mount SHCS-M8x25 M8 x 25 Scoket Head Cap Screws 4  
Spindle Mount M8Split M8 Star Washer 4  
Spindle Mount M8Split M8 Split Washer 4  
Spreading mount for spindle insertion SHCS-M8x50 M8 x 50 – Stainless/Steel 1  
Stepper Motors M5Star M5 Star Washer 16  
Stepper Motors M5Nylock M5 Nylock Nut 16  
Stepper Motors M5Washer M5 Flat Washer 16  
X & Y Limit switches SHCS-M3x25 M3 x 25mm Socket Head Cap Screws 8  
X & Y Limit switches M3Nylock M3 Nylock nut 8  
X & Y Limit switches M3 Washer M3 Washer 8  
X Axis Limit Switch Triggers SHCS-M5x70 M5 x 70mm Socket Head Cap Screws 2  
Y Axis Limit Switch Triggers BHCS-M5x40 M5 x 40mm Socket Head Cap Screws 2  
Y Plates to X Axis Extrusion / End Plates to Y Extrusion M8Star M8 Star washers 20  
Y Plates to X Axis Extrusion / End Plates to Y Extrusion M8Spring M8 spring washers 20  
Y Plates to X Axis Extrusion / End Plates to Y Extrusion SHCS-M8X20 M8 x 20mm Socket Head Cap Screws 20  
Z Limit Switch SHCS-M3x16 M3 x 16mm Socket Head Cap Screws 2  
Securing Custom Bed Extrusion FSHCS-M6x25 M6 x 25 Flat Socket Head Cap Screw 24 48

 

Other Parts

Part Description 1000mm Qty 1500mm Qty
T5B10 T5_Delrin Idler 3 3
DC Drag Chain / m 3 3
ZACME Z Axis Acme Thread 202mm 1 1
T5P10 T5 Pulley 10-15 tooth With flange 4 4
T5P20 T5 Pulley 20-24 tooth With flange 1 1
FB Flanged Bearing 2 2
CN Coolant Nozzle (Tslot Bed Option Only) 1 1
MBC Misumi Black Cap 2040 (like from ordbot) 4 4
Gusset Set for 4040 Set of 8 Gussets (8 only regardless of Size) 1 1
Spindle None, 800W, 1.5 KW, 2.2kw as per option selected 1 1
SpindleMnt 80mm Spindle Mounts if spindle option selected 1 1
NEMA23_51 Stepper Motors Nema 23 – 51mm Single Shaft 1 1
NEMA23_76 Stepper Motors Nema 23 – 76mm Single Shaft 4 4
CP Coolant Pump (Qty 2 if Tslot bed option taken) 1 1
Belt AT5 Open Loop Belt – meters 7.5 10
DT Drip Tray – (With Tslot Bed Option) 990 1400

 

Things you will need to complete the build

  • Soldering Iron – (possibly)
  • Basic Hand Tools
  • Couple of tubes of clear kitchen/bathroom silicone (Tslot Bed Option)
  • Enclosure to secure the electronics / power supplies

 

Electronic Components

Depending on the options you have selected the electronics kit may include one of the following:

 

Other included electronic components (option specific):

Part Description 1000mm Qty 1500mm Qty
VFD Variabe Frequency/Speed Drive 1 1
PMP 240V AC or 12V DC Water Pump 1 1
DCP One or two DC Power Supply 1  
VFDCbl Shielded 4 Core VFD Spindle Cable 5 7
StpCbl 4 Core Stepper Motor Cable 25 30
LimCbl2 Shielded Limit Switch Cable – Two Core (Y Axis) 5 7
LimCbl6 Shielded Limit Switch Cable – 6 Core (X & Z Axis) 5 7

 

 

Variable Frequency/Speed drive (VFD / VSD) 

Your inverter must be installed by a Licensed Electrician – these notes are for the electrician.

Notes:

  • Your inverter must have a ground connection.
  • Your spindle will die, very quickly, without coolant flow, don’t run it without first setting up the coolant pump!
  • Setup the VFD parameters before running the spindle!
  • There is no polarity to the spindle connections. Active outputs from the vfd connect to any of pins 1, 2 & 3 on the Spindle. The Spindle will run in an arbitrary direction.  You want it to run clockwise when looking from above. (Above when the spindle is mounted!). If the spindle is not turning clockwise, you can simply swap over any two of the 3 active spindle connections at either end.   Just pick two of the three active wires and swap them, clearly not the ground line it must stay connected to pin 4 on the spindle.

  • Shielded Cable is provided to help keep this noisy appliance from interfering with the limit switch signal lines.
  • The front panel of the VFD can be removed and a PC network cable used to mount the control panel in a convenient place.
  • Do not run the spindle without first ensuring coolant is flowing to it, and setting these parameters!

 

Heavy Mill Assembly.

  • The assembly of your Heavy Mill is not overly dependent on order.
  • Please set the short videos on loop as you assemble each part.
  • The pre build notes in the next section may save allot of difficulties, read before starting assembly

Regarding Hardware: 

  • As a general rule, if it fits its the right bolt, nut or screw – it will fit don’t force it
  • There are several washer types included which provide different support. The Spring Washers help maintain pressure on the joint to reduce vibrations loosening the connection and the star washers to help keep the assembly in position where the bolt may be in a slot and not a hole. We tend to use both a star and a spring in the slotted holes – although this may be unorthodox.
  • There is a bag of considerable spares included, you should not need to find a hole for all of these
  • Following the short videos and cross referencing the hardware list above to select the right hardware for the assembly.

 Regarding Electronics:

  • Its very important to have an electricians support for commissioning.
  • The VFD cable supplied is an important part – its difficult to make use of such a thick cable however it has been designed for the tough job and should not be substituted.

Pre Build Notes:

 

The Hiwin Linear Bearing blocks used on X & Y axis need to be carefully installed.

There is a small black spacer inserted into the bearing, its not to be pulled out – doing so will release all the balls all over the floor and repacking is quite an episode.   Never remove the black spacer strip unless it’s a rail that’s pushing it out and taking its place!  

    

The tolerances of these bearings are very tight.   Where two bearing blocks must be used together the bolts securing at least one of the bearing blocks must be left loose.   Should the bolts be tight and there be no play in the alignment of the blocks, the rail will not be able to be slid through both blocks. In the image below as the rail attempts to enter the second block – it had better be perfectly aligned, or left loose. Otherwise at this point will need to be backed out and realigned and it’s a tough job to feed the black spacers back into the blocks carefully while retrieving a heavy rail out of the block!

 

CAD Video of how the install and remove rails without loosing balls

 

 

Stepper Motors

  • Never disassemble the stepper motors, after doing so they are ruined – if something is wrong with a stepper, its wiring or driver based – nothing can be fixed by opening the motor.
  • Consider grinding a flat spot onto the motor shafts.  Fit a pulley and see if you can get the grub screws tight enough or if a flat spot is required.  Its difficult to flat spot the motors with a file, a flap disk or grinding wheel on a small angle grinder makes light work.

 

Base Construction

 

The Heavy Mill base consists of 4 to 6 x 40*40 cross extrusions and 2 x 40*120 Y Extrusions.  

1000mm:

Parts List for 1000mm Base:

 

  • 4 x 40*40 Base Supports
  • 2 x 40*120 Y Rails
  • 8 x M8*40mm SHCS
  • 4 x T-Slot Connectors (With Tslot Base option only)
  • 24 x m6 Tee Nut
  • 24 x M6x25 FHCS
  •  

     

    1500mm:

    Parts List for 1500mm Base

    • 6 x 40*40 Base Supports
    • 2 x 40*120 Y Rails
    • 12 x M8*40mm SHCS
    • 6 x T-Slot Connector (With Tslot Base option only)
    • 48 x m6 Tee Nut
    • 48 x M6x25 FHCS

     

    CAD Assembly of the base 

     Timelapse Base Assembly

     

    X/Z Axis Setup

     

     

    X/Z Axis Parts

    Part Qty
    XHorizonalTop 1
    XCarriagePlateV2 1
    XCarriagePlateV2_Back 1
    XHorizonalBottomV2 1
    XHorizonal_V2 1

    Belt clamp_Top

    1
    BeltClamp_Bottom 1
    Nema 23 Stepper 1
    10-15 Tooth Pulley – Stepper Motor 1
    20-24 Tooth Pulley – Acme Thread 1
    Hiwin Bearing Blocks 2
    Acme Thread 1
    Steel Shafts 2
    Lead Nut 1
    Pillow Block Bearings 2
    Flanged Bearings 2
    M5*20 FHCS 18
    M6*20mm FHCS 8
    Limit Switches 2
    Closed loop belt 275mm 1
    M5*50 SHCS + Star washers + Nylock Nuts 4
    M3*10 Button Head Cap Screws (Shaft Grub Screws) 4
    1 inch Alloy Spacer 4

     

    Notes:

    • DO NOT remove the black tabs from inside the bearing blocks!!
    • The bearing blocks are not directly in line with each other, one is offset.
    • There are 3 horizontal plates and two verticals.
    • All plate screws are Countersunk M5 * 20’s
    • The red and green bearing blocks take M6 countersinks (leave them loose)
    • Do install the Flanged Bearings, Acme Thread, Hardened Shafts and Pillow Block bearings at this time so that it doesn’t have to come apart during installation of the Z Axis.
    • The tolerance of the 6 holes for the shafts and flanged bearings is very tight! You will likely have to lightly sand the inside of the holes with some emery cloth to install the shafts and bearings, this is a pain but by design and necessary.
    • The Star washers will help the Z motor grip in its slots, install at closest point to front, put on AT5 closed belt on then pull back tight and lock off nuts.
    • Once complete you can add the Z Axis parts as well as the main X 8080 rail. Watch the Video: Z Axis – Spindle Explosion

    X Axis Cad Explosion Video

     

     

    X Axis Linear Rails

    Parts:

    Part Description 1000mm Qty 1500mm Qty
    X Axis Rail 8080 – Tapped Both Ends M8 * 15mm 1 1
    Hiwin HG20 Hiwin Linear Rail –  longer of the two for 1000mm mill. 2 2
    Securing Hiwin Rail to TeeNutBar through Tslot M5 x 20 Socket Head Cap Screw 35 50
    Tee Nut Bar < 300mm Tnut Bar 7 10

     

     Notes:

    • When installing the Linear rails, note that they are offset as per the image below.  Take a look at your X Axis, if the bearing blocks are offset as per the instructions then make sure to offset the rails on the X Axis too – if you didn’t get that offset set correctly in the X carriage build – don’t pull it apart, just line up the Rails in this section instead of offsetting them.

     

    X Rail Cad Explosion Video

    X Rail Assembly Video

     

    Y Plates Build and Gantry Installation

    Parts:

    Parts Description 1000mm Qty 1500mm Qty
    YCP YCarriagePlate_V2_Left_20mmTaller 1 1
    YCP YCarriagePlate_V2_Right_20mmTaller 1 1
    SHCS-M6x20 M6 x 20 Socket Head Cap Screws 16 16
    M6Star M6 Star External Star Washer 16 16
    M6Spring M6 Split/Spring washer 16 16
    SHCS-M6x20 M5 x 20 Socket Head Cap Screw 35 50
    M8Star M8 Star washers 20 20
    M8Spring M8 spring washers 20 20
    SHCS-M8X20 M8 x 20mm Socket Head Cap Screws 20 20
    Hiwin HG20 Hiwin Linear Rail 2 2
    WC20 WC20 Hiwin Linear Bearing Blocks 4 4

     

     Notes:

    • Remember Again: Don’t tighten any bolts in the bearing blocks – must remain loose for alignment
    • Take note when installing bearing blocks, they should be on the opposite side of the 3 vertical countersinks in the Y plates
    • Here we are using a Star washer and a Split Washer on the bearing blocks. The star should be against the alloy plate and the split washer against the head of the bolt.  One or the other washer can be left out. 
    • Don’t tighten up the bearing blocks still – this is the last thing in the build!

    Y Plate Cad Explosion video

    Y Plate Assembly And Gantry Installation Video

     

    Y End Plate, Pulley Plate, Stepper Plate and Stepper Motor installation.

    Parts:

    Parts Description QTY
    YPA Y_Plate_Type_A_120mm 2
    YPB Y_Plate_Type_B_120mm 2
    XMP XMotorPLate 1
    YMP YMotorPLate_120mm 2
    XPP XPulleyPLate 1
    YPP YPulleyPLate_120mm 2
    Belt Clamp Bottom and Stepper Motors M5 x 25 Button Head Cap Screws 22
    Belt Clamp Top M4 x 25mm Scoket Head Cap Screws 6
    Some shorter FHCS as several thread bores are shallower M5 x 16mm Countersunk 10
    Motor Plates, Pulley Plates M5 x 20mm Countersunk 18
    Idler Pulley Axels M5 x 30 Button Head Cap Screws 3
    Idler External Pulley Spacer 5mm Alloy Spacer – 5mm bore 3
    Idler Bearings – Two per idler 5×16×5 Bearing 625 2RS 6
    Idler Internal Spacer Custom Spacer/Washer 3
    Stepper Motors M5 Star Washer 16
    Stepper Motors M5 Nylock Nut 16
    Stepper Motors M5 Flat Washer 16

     

     Notes:

    • Y Plates have a small M5 Tapped hole that is to be positioned towards the top – as pictured
    • Idler pulley plates and motor plates also have an extra hole for a bolt that holds the drag chain support extrusions, these are installed with the hole at the bottom.

     

    Install Idler Bearings with spacer

    Attach Idler to Idler Pulley Plates

    Install Idler Plates, Motor Plates and Motors

    Note:

    • X Motor needs installing with 20mm BHCS not 25mm BHCS.

     

    Spindle Mount

    The back halves of spindle mount (at a minimum) must be installed onto the spindle carriage plate before the carriage plate is installed.

     

    Install Drag Chain Supports

    Description QTY
    X Axis Drag Chain Support Rail 2040 T Slot – Longer 1
    Y Axis Drag Chain Support Rail 2040 Tslot – Shorter 1
    M5 x 16 Button Head Cap Screws 4
    Misumi Black Cap 2040 4

     

    Drag Chain Supports Cad Video

     

    Install Drag Chain Mounts

    Description QTY
    M5 x 12 Button Head Cap Screws 4
    M5 x 10 Button Head Cap Screws 4
    M5 Nuts 5
    X Drag Chain Bracket 1
    Y Drag Chain Bracket 1
    M5 x 70mm Socket Head Cap Screw 1
    M5 x 20mm Button Head Cap Screw 1

     

    Notes:

    • The long M5x70 BHCS is the a trigger for the Limit switch on the X Axis. 

     Drag Chain Mounts Cad Explosion

     

    Drag Chain Installation

    Description QTY
    M5 x 12 Button Head Cap Screws 4
    M5 x 10 Button Head Cap Screws 4

    M5 Pre insertion Tee Nut

    4

     

    Notes:

    • You will need to break and join your drag chain to get the best length, considering bend radius. 
    • One male and one female drag chain end is required for each section of chain.
    • 4 * M5x12 BHCS and 4 M5 nuts secure the drag chain ends to the mounts.
    • 4 * M5x10 BHCS secure the other ends to the drag chain support extrusions using T-Nuts

     Build Video (2x Speed)

    Limit Switches

    Parts Description QTY
    LMS Limit Switches 5
    Y Axis Limit Swithces M3 x 16mm Socket Head Cap Screws 4
    X Axis Limit Switches M3 x 25mm Socket Head Cap Screws 4
    X Axis Limit Switches M3 Nylock nut 4
    X Axis Limit Switches M3 Washer 4
    Z Axis Limt Switch M3 x 16mm Socket Head Cap Screws 2

     

    Note:

    • One limits switch has no lever, this is for the Z axis – its triggered by the pillow block bearing case

    X & Y Limit Switch Cad Explosion

     

    X Limit Switch Cad Explosion

    Limit Switch Build Video

     

    Install Belt Clamps and Belts

    Parts Description 1000mm Qty 1500mm Qty
    BCT BeltClamp_Top 3 3
    BCB BeltClamp_Bottom 3 3
    Belt Clamp Bottom and Stepper Motors M5 x 25 Button Head Cap Screws 6 6
    Belt Clamp Top M4 x 25mm Socket Head Cap Screws 6 6
    Belt Open Loop Belt – meters 7.5 10
    Belt Closed loop 275mm T5 Belt 1 1

     

     Notes:

    • Pull the motors towards the centre of the mill before installing belt, leave motor screws all loose.
    • Leave the top belt clam loose with at least 5mm so that you can fit a doubled over belt into it
    • Install the belt with as little slack as possible, but not with too much concern for tension, the motors are pulled back in their slots to add the required tension.
    • The belt loops over its self and is clamped down between the two belt clamps – as per the image below

       

      Belt Clamp Cad Explosion

      Belt Clamp and Belt install Build Video

       

      Wiring and Plumbing

       

      Parts Description 1000mm Qty 1500mm Qty
      VFDCbl Shielded 4 Core VFD Spindle Cable 5 7
      HRNS Stepper and Limit Switch Harness 1 1
      Hose 5mm Water line hose 2x5m 2x5m

       

      Notes:

      • There are two sets of drag chain.  One running with the X Axis and One Running with the Y.
      • All cables running though the X must also travel through Y chain
      • Its easier to remove one end of each drag chain and lay it flat to work in cables

      X Axis Notes:

      • Ensure there is enough VFD cable, and water line length for the Z axis to operate.  As the Z axis goes down, it will draw more cable down with it and it must still clear the X axis and the Z axis belts and pulleys on the top of the X axis.
      • From the X axis, all the way back through the X and Y drag chains,  the cables required are:
        • VFD Cable
        • 6 Core Limit Switch Cable
        • Z Stepper Motor Cable
        • 2 (or 3 if planning on running work coolant) 5mm water lines.

      Y Axis Notes

      • The furthest Y cable (away from the Y cable drag chain) runs down the back of the machine in the T slot of the back support 4040 base extrusion.
      • All Cables feeding the machine will end up exiting the Y drag chain at the back of the machine. (Other than the two Y motors which never enter the drag chains.)

         

        Wiring Video 1

        Note: Things should be easier now with a wiring harness instead of all separate wires.

         

        Limit Switch Termination

        Notes:

        • The limit switches have 3 terminals.    Common, Normally open, Normally Closed
        • Generally we use the common and normally open which are the terminal on the side and the closest terminal to the one on the side.
        • Each switch needs two wires, if necessary the common can be shared between any of the switches.

         

        X & Z Limit Switches  (3 Switches)

        • Take 3 pairs of wires from the 6 Core shielded cable that exits the X drag chain near the back of the X axis.  Write down the colours of the 3 pairs selected and a note of which pair your using for which switch.
        • From each pair, connect one wire to the Common, one to the Normally Open of each switch.

        Y Limit Witches

        • Take the 4 pair shielded cable that exits the Y drag chain.
        • Separate the 4 core shielded cable into two pairs and record the colours of each.
        • From each pair, connect one wire to the Common, one to the Normally Open of each switch.

         

        Stepper Motors

        Notes:

        • There are 4 Wires on each stepper motor.
        • The Stepper motors have two coils, and two pairs
        • If the wires of any one or more pair are touching each other, the motor will act like a break and be heard to spin by hand.  In this way its possible to identify the pairs, if you touch any two wires together and the motor doesn’t become hard to spin, those two are not a pair. When you find a combination of two wires that when joined make the motor difficult to spin, thats a pair – and by default the other two are the second pair.
        • The pairs are Red/Blue, and Green/Black.
        • Once connected – To identify in the mass of wires coming of the machine which white wire is which motor you can short out one of the pairs on a wire and see which axis becomes difficult to move, then mark this wire so it can be identified when you come to wiring your controller.

         

        Wiring Diagrams

        CNC Controllers

         

         

         


         

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