CNC Pickup Winder Electronics Kit
Contents
1. button 2 returns to operating mode selection without storing Gear ratio buttons 4 amp 5 select motors gear ratio for main and traverse motor button 3 stores selection and skips to default tensioner setting button 2 returns to operating mode selection without storing for main motor faceplate motor this value depend just on number of teeth of your pulleys possible values are 1 1 2 1 and 4 1 eg if you have a 15 teeth pulley at motor and a 15 teeth pulley at faceplate you have to select 1 1 if you have a 20 teeth pulley at motor and a 10 teeth pulley at faceplate you have to select 2 1 if you have a 48 teeth pulley at motor and a 12 teeth pulley at faceplate you have to select 4 1 for traverse motor the value depends on pulleys ratio and pitch lead screw too refer to the table below Lead screw pitch and pulleys ratio used motor screw Option to select Imm or 20 Tpi pitch with 1 1 pulleys ratio 1 1 Imm or 20 Tpi pitch with 2 1 pulleys ratio 2 1 Imm or 20 Tpi pitch with 4 1 pulleys ratio 4 1 2mm or 10 Tpi pitch with 1 1 pulleys ratio 2 1 2mm or 10 Tpi pitch with 2 1 pulleys ratio 4 1 4mm or 5 Tpi pitch with 1 1 pulleys ratio 4 1 7 www labguitars com Default tension buttons 4 amp 5 select default tensioner value with 1 or 1 steps buttons 6 amp 7 select default tensioner value with 100 or 100 steps button 3 stores value and skips to default speed setting button 1 powers on2. amp 5 move traverse useful if you want adjust limit switches position button 3 confirms and skips to traverse mode selection button 2 returns to operating mode selection 9 www labguitars com traverse mode there are 3 modes for traverse movement single pitch enter a pitch for all layers in your pickup alternate pitch you can enter from 2 to 10 pitch values and the traverse rotates them in pickup winding layers random pitch you enter min and max values traverse rotates in layers random values between min and max buttons 4 amp 5 select mode button 3 confirms button 2 returns to operating mode selection if you select single pitch buttons 4 amp 5 select pitch value with 1 or 1 steps buttons 6 amp 7 select pitch value with 10 or 10 steps button 3 confirms and skips to tensioner setting button 2 returns to operating mode selection if you select alternate pitch enter number of pitch values you want rotate in layers buttons 4 amp 5 select number of values 1 or 1 steps button 3 confirms and skips to pitch values setting button 2 returns to operating mode selection 10 www labguitars com pitch values setting select values like in single pitch but for n times if you select random pitch select values like in single pitch but for min and max tensioner value display shows default value buttons 4 amp 5 modify tensioner value with 1 or 1 steps buttons 6 amp 7 mod
3. off tensioner useful for test button 2 returns to operating mode selection without storing Default speed buttons 6 amp 7 select default speed value with 200 or 200 steps button 3 stores value and skips to default ac deceleration setting button 2 returns to operating mode selection without storing Default ac deceleration buttons 4 amp 5 select default ac deceleration value with 1 or 1 steps buttons 6 amp 7 select default ac deceleration value with 100 or 100 steps button 3 stores value and returns to operating mode selection button 2 returns to operating mode selection without storing eg value of 20 means that the main motor goes from 0 to full speed and vice versa in 20 turns 8 www labguitars com Pickup winding mode wind direction buttons 4 amp 5 select wind direction button 3 confirms and skips to turns setting button 2 returns to operating mode selection turns setting buttons 4 amp 5 select turns value with 1 or 1 steps buttons 6 amp 7 select turns value with 100 or 100 steps button 3 confirms and skips to traverse travel measuring button 2 returns to operating mode selection travel measuring controller performs a measuring of traverse travel between limit switches and shows value for a perfect winding it have to be same at your pickup height bobbin besides controller needs this measure for TPL calculation too your options button 1 restarts measuring buttons 4
4. Lab Liuteria Antonio Buccafusca CNC Pickup Winder Electronics Kit www labeuitars com features e 1 30000 clockwise or counterclockwise turns e Pause resume and emergency stop functions during winding e 0 01 1 mm synchronized auto traverse in single pitch mode random mode between programmable min and max pitch values and alternate mode 2 10 programmable pitch values rotating in layers e Values displayed in mm inch and TPL e Programmable traverse travel with limit switches and measuring function e Max speed programmable in 10 steps from 200 to 2000 rpm max speed depends on your mechanics configuration and on motors included in your kit e Programmable acceleration and deceleration e Imm 2mm 4mm 20tp1 10tpi and 5tpi pitch lead screw traverse and 1 1 2 1 and 4 1 pulleys ratio faceplate main motor transmission supported e PWM output for tensioner experimental feature www labguitars com Cnc Winder kit wiring Main Motor mm inch traverse lead screw jumper mm open inch closed you also have to select it in configuration menu CNC Winder Controller Motor driver go X Y Main mot A i Main mot A i o N Main mot B Te A A Main mot B Right Limit switch Main mot dir Left Limit switch SISO OI gt Main mot step Gnd i 5v Out 5v In l Gnd Main mot step d e 24v In Main mot dir ENC Win
5. der rs enable switch E Mente eS Motors re Aia Trav mot step f b TORV OSEN Board Ta S Z Trav mot A Trav mot dir 5 Wav mot A Out Gnd Tensioner Is all C oro Ba V in Tensioner C Trav mot B Tensioner resistor not included S Trav mot dir ER eee Trav mot step Unconnected coil Tensioner Motor not included 24vDC PSU not included Please note if at first test your faceplate direction is not as displayed swap Main mot A and Main mot A wires Main switch not included In the same way swap Trav E It has to be connected on mot A and Trav mot A the main side of your PSU wires if direction of your traverse is not as displayed Main 230 110 Vac Traverse Motor The kit does not include any mechanical part so everyone has to find and or build what is needed to complete the winder This is not too simple then make sure you are capable of that Below there are some tips and pictures but anyone can adapt building for his own skills tools and imagination The Main motor and faceplate must be fixed on metal or wood frame The stepper motors are generally not very fast so it s better to speed up faceplate with a toothed pulleys belt transmission Supported transmission ratios by the controller are 1 1 2 1 and 4 1 the bigger pulley on motor shaft The images below show the building of the my main motor assembly It is built with soldered iron to re
6. duce unwanted vibrations but for an easier construction could be also made of screwed wood My pulleys belt transmission has a 2 1 transmission ratio 20 teeth pulley on motor and 10 teeth pulley on faceplate The shaft of the faceplate has been made with a bolt and kept in place by three bearings 3 www labguitars com Traverse assembly The traverse is the the most complex assembly in the winder The traverse moves on two rails and is driven by a leadscrew The controller supports 1 2 and 4 mm and 20 10 and 5 Tpi leadscrew pitch The leadscrew can be connected to the motor shaft by a pulleys belt transmission as in my winder or directly as shown on the render images below The best solution to have a most fast traverse is to have 4mm or 5tp1 pitch leadscrew with 1 1 directly or same pulleys transmission but equivalent configurations are 2mm pitch leadscrew with 2 1 transmission or 1mm pitch leadscrew with 4 1 transmission bigger pulley on motor shaft Other supported combining are shown in the table at page 7 The traverse moves between two limit switches that toggle direction and permit to adjust the travel To have travel adjusting limit switches have to be pushed by two adjusting screws You can see my arrangement in the picture of my winder and in the render images below In the image below you can see a pickup wound with a limit switch too far off b limit switches too closer and c limit switch placed exactly a
7. ify tensioner value with 100 or 100 steps button 3 confirms and skips to speed setting button 1 powers on off tensioner useful for test button 2 returns to operating mode selection speed value display shows default speed buttons 6 amp 7 modify speed value with 200 or 200 steps button 3 confirms and skips to ready to start button 2 returns to operating mode selection 1 www labguitars com ready to start and run with button 1 start pause winding go or stop with ac deceleration with button 2 emergency stop winding without deceleration and if you push again returns to operating mode selection buttons 6 amp 7 modify tensioner value with 1 or 1 step 12 www labguitars com
8. lues When you switch on the tensioner for the first time start from value 0 and increase it checking the holding torque and the motor temperature For the the pickup wires the tensioning should be adjustable between 0 and 30gr To avoid that the wire slides around the tensioner pulley it is necessary to wind it 2 turns and also it is necessary to add a small felt pre tensioner as shown in picture 5 www labguitars com Controller User Guide At start up display shows firmware version then you have to select the operating mode they are winding configuration jog control you can select operating mode with buttons 4 amp 5 and confirm with ok button 3 Jog mode jog mode is useful for motors movement test and for measuring the traverse travel between limit switches buttons 4 amp 5 move traverse buttons 6 amp 7 move main motor button 1 starts traverse movement for travel measuring at finish value will be shown button 2 returns to operating mode selection i E A ae E 6 www labguitars com Configuration mode Configuration mode allows you to set in order lead screw units mm or inch and pitch motors pulley ratio and default values of tensioner speed and ac deceleration Lead screw units buttons 4 amp 5 select mm or inch units for your traverse lead screw but you have to select it with jumper on the controller board too button 3 stores selection and skips to gear ratio setting
9. t pickup bobbin height my traverse assembly she pickup wound with different traverse travel setting 4 www labguitars com The controller has an adjustable PWM output to drive a tensioner built with a small stepper motor Ifa DC current flows in a coil of a stepper it causes a breaking torque proportional to it This Feature is labeled as experimental because the motor is not included in the kit you can find a small stepper motor for free in any broken pc printer or on ebay at few euros and also you have to find the right pulley dimension and right series resistor for your motor In my tensioner I turn a nylon pulley on lathe with an outer diameter of 40mm I think it should be the right diameter for any small stepper motor A stepper motor can have 4 5 6 or 8 wires then you have to find the two wires of a coil choose a wire and with a ohmeter find the other one it is the one with the lower resistance value Leave the other wires unconnected Usually 0 25 Ampere is enough for the maximum current of the tensioner to have this value you have to connect a resistor in series to the stepper motor coil A 100 ohm 7watt resistor should be the right value for any small stepper but you can decrease this value not less than 470hm if max tensioner holding torque 1s not enough or increase this value if the the range of tensioner is too wide and the useful range is confined in a narrow range of the settable controller va
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