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Sherline Products WETTROTH 8100, Руководство пользователя

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Sherline Products WETTROTH 8100 Скачать руководство пользователя страница 6

 

FIGURE 7-Mounting the sensor to the belt housing 

NOTE: If you have a mill with an older AC/DC motor that does not have a plastic belt guard, the 
RPM sensor can be mounted in the proper position over the pulley by attaching it to the motor 
mounting bracket. Locate and mark where the hole should be drilled. Remove the motor and drill 
a hole through the bracket. You can use a self-tapping sheet metal screw or a bolt and nut 
through the hole or you can tap the hole to match the thread of the bolt you use. 

Hooking up the connecting cables 

Plug the cable connector from each encoder unit into is respective port on the display unit. The 
telephone type cable connectors go in with the locking tab facing up when the unit is lying on its 
back. The RPM sensor cable goes into the port marked "Tach In". 

Plug the power adapter into the bottom hole marked "DC In", and plug the transformer into a 
115VAC (60 Hz.) source. Check to make sure all three axes are functioning. Turn on the motor 
and check to see that the RPM indicator is functioning. 

Initializing your display for inch or metric leadscrews 

When you press the "Power" button to turn your system on, the upper right corner of the display 
will read either "inch" or "metric" mode. Normally, the DRO will be set up properly when you 
receive it, but there is always a possibility it could be set wrong. To set or change the system of 
measurement your unit displays, follow these steps: 

1. With the power off, unplug the power cable from the display unit. 

Содержание WETTROTH 8100

Страница 1: ...ital ReadOut for Sherline mills The kit can be installed on any Sherline mill regardless of age Two axis kits will also soon be available for Sherline lathes The compact electronics package and clever backlash compensation feature were designed by John Wettroth On expensive industrial DRO s a sensor reads a highly accurate external scale On Sherline s DRO the sensor reads rotation of the leadscrew...

Страница 2: ...wheel units It is suggested that you remove the headstock and motor assembly from the mill to make it easier to install the D R O components 1 Move the table all the way to the left This will help center the leadscrew in the collar and keep it from binding See figure 2 2 Move the table all the way to the front toward the operator 3 Raise the headstock all the way up to the to the top of its travel...

Страница 3: ...n the X axis push the table AWAY from the handwheel while pushing the handwheel onto the leadscrew shaft On the Y axis hold the table not the base with one hand and push the handwheel onto the shaft with the other Rotate the handwheel so that the set screw tightens on a new part of the shaft If you don t it will tend to pick up it s old indentation making it difficult to tighten it in a new positi...

Страница 4: ...e tight enough so that it doesn t move accidentally once positioned If too loose a spot of instant glue can be used to hold the housing in place on the collar Another method would be to remove the housing shell and sand the mating surfaces on a piece of sandpaper on a flat surface until they grip the collar tightly enough FIGURE 4 Installing the encoder unit over the thrust collar The unit is inst...

Страница 5: ...lar Then push down on the handwheel and tighten its set screw being sure to tighten it against a new spot on the shaft Install the pickup housing over the handwheel unit as shown in Figures 4 and 5 When finished the cable should exit toward the left when viewed from the front Installing the RPM sensor 1 Reinstall the headstock motor speed control onto the mill 2 Apply the 2 1 2 round decal to the ...

Страница 6: ...phone type cable connectors go in with the locking tab facing up when the unit is lying on its back The RPM sensor cable goes into the port marked Tach In Plug the power adapter into the bottom hole marked DC In and plug the transformer into a 115VAC 60 Hz source Check to make sure all three axes are functioning Turn on the motor and check to see that the RPM indicator is functioning Initializing ...

Страница 7: ...heel on each axis rotates before the table starts to move If this amount is excessive see your instruction manual for instructions on setting backlash It should ideally be in the 003 to 005 range Once the amount is determined the backlash is compensated for by setting it into the display unit s memory To do so complete the following steps for each axis 1 Turn the handwheel for each axis one full t...

Страница 8: ...th your DRO so you can stand the unit up on your workbench This makes it easier to read while you work If you wish to secure the box to the stand a piece of double sided foam tape is a good method Reversing the direction of the reading on the X axis The X axis readout is designed to read negative numbers when the handwheel is turned in the clockwise direction and positive when turned counter clock...

Страница 9: ...g a machine equipped with a digital readout I find it is best to use either the readout or the handwheels but not both If the displayed accuracy of 0005 01mm is satisfactory for the job you are doing use just the digital readout and disregard the handwheel settings In cases where you might want to interpolate to a higher degree of accuracy the markings on the handwheels will allow you to do this A...

Страница 10: ...shop technology down to tabletop size and makes your Sherline tools easier and more fun to use I think you will find the digital readout to be a great addition to your Sherline machine shop Joe Martin President and Owner DRO Frequently Asked Questions Answers from developer John Wettroth CLICK HERE for a page of answers to the most common technical questions received on the DRO system There are al...

Страница 11: ...81340 1 2 5 Z axis handwheel w out gear Larger size handwheel 81500 1 Tachometer encoder w cable 81510 1 Tachometer pickup decal 81280 12 2 x 3 8 Self tapping screws DRO housing to upper cap 40440 1 2 x 1 4 Self tapping screw holds tach housing to belt cover housing 81050 1 115VAC Power supply transformer 81150 1 Metal stand for display box 81080 1 Plastic tie wrap 81270 9 2 56 x 3 8 pan head Phil...

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