Tormach 1100M User manual

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©Tormach® 2020
TECHNICAL DOCUMENT Version 0520A
OWNER'S GUIDE
1100M POWER DRAWBAR

TECHNICAL DOCUMENT
PURPOSE
This document gives instructions on installing a 1100M Power Drawbar.
LOOKING FOR A VIDEO?
Before you begin, select the image below to watch a walk-through video of this entire installation
procedure.
PRODUCT INFORMATION
Product: 1100M/770M Power Drawbar Kit (PN38436)
Quantity Description
1 1/4 in. Plastic Tube
1 1/4 in. Push-to-Connect Air Fitting Adapter
4 4 in. Nylon Cable Tie (PN31719)
1Anti-Seize (PN 31273)
1 Extend (Red) Air Line
1FRLFilter-Regulator-Lubricator (PN 32457)
1 M10 × 16 mm Shoulder Screw (PN 35926)
1 Power Drawbar Button Assembly (PN 38216)
1 Power Drawbar Cylinder Assembly (PN37750)
1 Quick-Release Pin (PN 37284)
1 Retract (White)Air Line
8Power Drawbar Spring Washer (PN 31319)
Note: If any items are missing, we can help. Email [e-mail] to contact Tormach Technical
Support for guidance on how to proceed.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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SETUP
Complete the following steps in the order listed:
Required Tools 3
Air Requirements 3
Install the Power Drawbar 3
Adjust the Power Drawbar 17
Required Tools
This procedure requires the following tools. Collect them before you begin.
lAdjustable wrench (two)
lClean cloth
lElectric drill
lHardware to install the FRLFilter-Regulator-Lubricator
lMetric hex wrench set
lPaint pen
lTooling to drill holes for the FRLFilter-Regulator-Lubricator
Air Requirements
You must verify that the site conforms to the following air supply requirements.
The Power Drawbar uses compressed air to release tools held in the spindle.
lAir Pressure Between 90 psi and 120 psi (620 kPa to 825 kPa).
If the air supply is more than 120 psi (825 kPa), you must use a regulator.
lDry Air We recommend using a compressed air dryer, desiccator, or filter between the air compressor and
the machine.
lLubricated Air You must lubricate the air with air tool oil.
Use the FRLFilter-Regulator-Lubricator (PN 32457) or similar for this purpose.
Install the Power Drawbar
Complete the following steps in the order listed:
Prepare the Machine 4
Disassemble the Original Drawbar 4
Assemble the Power Drawbar 6
Install the FRL 12
Set Up the FRL 13
Make Air Connections 14
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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Prepare the Machine
1. If there's already a Tormach Tooling System (TTS) tool holder in the spindle, remove it.
2. Verify that you can access the inside of the spindle cabinet: jog the Z-axis down (-Z) until it is about 6 in. (15
cm) from the machine table.
3. Power off the machine and the PathPilot controller.
a. Push in the Emergency Stop button on the operator box, which removes power to motion control.
b. From the PathPilot interface, select Exit.
c. Turn the Main Disconnect switch to OFF on the side of the electrical cabinet.
Disassemble the Original Drawbar
CAUTION! Loose Objects Hazard: The original drawbar contains spring-loaded hardware, which could
quickly become loose, causing serious injury. Before disassembling the original drawbar, you must put on
safety eyewear that meets ANSI Z87+.
1. Put on safety eyewear.
2. Open the spindle door.
3. While using one hand to support the Tormach Tooling System (TTS) collet, use the other to turn and remove
the original drawbar.
4. Set the collet and the original drawbar aside.
5. While using one hand to hold the spindle lock arm, use the other to remove the spindle lock arm pivot screw
with a 5 mm hex wrench.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)
Figure 1: Spindle lock arm pivot screw removed from the original drawbar assembly.

TECHNICAL DOCUMENT
Note: The spindle lock arm assembly contains spring-loaded hardware, which could quickly
become loose.
6. Carefully remove the spindle lock arm.
Figure 2: Spindle lock arm removed from the original drawbar assembly.
7. Remove the spindle lock base and its components with a 5 mm hex wrench.
Figure 3: Spindle lock base from the original drawbar assembly.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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Note: Keep all components for future use. The original drawbar, drawbar bushing, and spindle lock
are all required to operate the machine if you later decide to remove the Power Drawbar.
8. Wipe all exposed drawbar mounting surfaces inside the spindle motor cabinet with a clean cloth.
9. Remove the spindle lock arm on the spindle door.
Figure 4: Spindle lock arm on the spindle door.
Assemble the Power Drawbar
1. Find the drawbar that you set aside in "Disassemble the Original Drawbar" (page4).
2. Remove the drawbar bushing from the drawbar, and set it aside.
3. Put Anti-Seize (provided) on the bottom of the drawbar head.
4. Find the eight spring washers provided.
5. Move one spring washer on the drawbar, with the convex side of the spring washer toward the drawbar
head.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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Figure 5: Convex side of the spring washer toward the drawbar head.
6. Move another spring washer on the drawbar, with the concave side of the spring washer toward the concave
side of the spring washer from Step 5.
Figure 6: Concave sides of two spring washers together.
7. Put Anti-Seize on the edge of the contact surface between the pair of spring washers that you put on the
drawbar in Steps 5 and 6.
8. Repeat Steps 5 through 7 for the remaining six spring washers. Make sure that you put Anti-Seize on the
spring washers at every contact point.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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9. Examine the stack of spring washers. Make sure that all eight spring washers are on the drawbar and
arranged in four sets of opposing pairs.
Figure 7: All eight spring washers on the drawbar.
10. Find the drawbar bushing that you set aside in Step 2, and put it on the drawbar. Make sure that the smaller
diameter of the drawbar bushing is toward the bottom of the drawbar.
11. Put Anti-Seize on the top of the drawbar bushing.
12. Put Anti-Seize on the bottom threads of the drawbar.
Figure 8: Locations to apply Anti-Seize on the drawbar assembly.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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13. Put Anti-Seize on the outside taper of the Tormach Tooling System (TTS) collet. Make sure that there is no
Anti-Seize on the inside of the collet.
14. Put the drawbar assembly into the spindle.
15. While using one hand to insert the collet into the spindle, use the other to turn the drawbar into the collet.
Figure 9: Drawbar assembly installed in the spindle motor cabinet.
16. Hand-tighten the drawbar.
17. While using one hand to insert an empty Tormach Tooling System (TTS) tool holder into the collet, use the
other to tighten the collet into the drawbar with an adjustable wrench.
18. Use two large, adjustable wrenches to tighten the Power Drawbar until the spring washer stack is
compressed to a height of 3/4 in. (20 mm).
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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Figure 10: Correctly compressed spring washer stack.
Note: Later in this procedure, after you complete the initial installation, you'll do a final drawbar
tension adjustment. For more information, see "Adjust the Drawbar Tension" (page17).
19. Find the Power Drawbar cylinder assembly provided.
20. Identify the Power Drawbar mounting surfaces inside of the spindle motor cabinet, as shown in the following
image.
Figure 11: Power Drawbar mounting surfaces inside of the spindle motor cabinet.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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21. Put the Power Drawbar cylinder assembly on the mounting surface.
22. Find the 10 mm shoulder screw provided, and then put Anti-Seize on its threads.
23. Install the 10 mm shoulder screw on the Power Drawbar cylinder’s mount plate with a 5 mm hex wrench.
The unit, which floats by design, is now securely installed to the spindle head.
Figure 12: 10 mm shoulder screw installed on the Power Drawbar cylinder's mount plate.
24. Find the quick-release pin provided, and then insert it into the Power Drawbar cylinder’s mount plate.
The quick-release pin allows the Power Drawbar cylinder to pivot within the spindle motor cabinet.
Figure 13: Quick-release pin inserted into the Power Drawbar cylinder's mount plate.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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Install the FRL
1. Clean the FRL to make sure that it's free of dust.
2. Remove and discard the plastic inserts from the FRL.
3. Identify the dial provided, and then put two layers of thread seal tape on its threads.
4. Attach the dial on the front of the FRL.
5. Identify the two quick-connect bushings and the two NPT reducers provided. Connect the quick-connect
bushings to the NPTreducers.
6. Put two layers of thread seal tape on the threads of the NPT reducers.
7. Attach the NPT reducers to the valve housings on either side of the FRL.
8. Determine a location to install the FRL. We recommend installing it on the back of the machine's chip pans.
Figure 14: FRLinstalled on the machine.
9. Use the FRL bracket as a template to mark the two hole locations, and then drill two holes.
10. Install the FRL bracket on the machine with your own hardware.
11. Connect the air lines to the quick-connect bushings.
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Set Up the FRL
1. Open the fill port on the FRL with a hex wrench.
Figure 15: Fill port on an FRL.
2. Fill the lubricator bowl with standard air tool oil with a small funnel. You must only use oil specifically
designed for air tools.
3. Turn the adjustment knob halfway toward the +.
4. Flush all air bubbles from the system.
5. Examine the sight window for air bubbles. When there are no air bubbles in the sight window, and a drop of
lubricant is on the bottom of the stem, turn the adjustment knob one-quarter turn back.
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Figure 16: Components to flush the air from the FRL.
6. Close the fill port on the FRL with your hand.
NOTICE! Don't use a hex wrench to close the fill port. If you do, you could over-tighten it and break the
plastic cap.
Make Air Connections
Note: If you have an (optional) Automatic Tool Changer (ATC), install it now.
1. Find the button box assembly provided.
2. Remove four M5 × 0.8 - 10 button head screws securing the cover to the button box with a 3 mm hex
wrench. Then, remove the cover.
3. Install the button box base, standoffs, and button assembly on the mill head with two M4 × 0.7 - 50 socket
head cap screws.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

TECHNICAL DOCUMENT
Figure 17: Button box base installed on the mill head.
4. Remove and discard the shipping plugs on the Power Drawbar.
5. Find the Retract (white) air line provided. Then, connect one end to the Retract port on the Power Drawbar
button.
Figure 18: Power Drawbar air line routing.
6. Route the loose end of the Retract air line to the Power Drawbar cylinder, and then connect it to the lowest
elbow fitting.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

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Figure 19: Retract fitting on the Power Drawbar cylinder.
7. Find the Extend (red) air line provided. Then, connect one end to the Extend port on the Power Drawbar
button.
8. Route the loose end of the Extend air line to the Power Drawbar cylinder, and then connect it to the top tee
fitting.
Figure 20: Extend fitting on the Power Drawbar cylinder.
9. Use the three cable ties to secure both air lines together.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)

TECHNICAL DOCUMENT
10. Find the 1/4 in. plastic tube provided. Then, connect one end to the Air Supply push-to-connect elbow on the
Power Drawbar button.
11. Route the loose end of the 1/4 in. plastic tube through the energy chain and toward the FRL
Figure 21: Air line routing through the energy chain.
12. Connect the 1/4 in. plastic tube to the Output port on the FRL.
13. Find the 1/4 in. plastic tube provided. Then, connect one end to the Input port on the FRL.
14. Put the 1/4 in. push-connect air fitting adapter on the loose end of the 1/4 in. plastic tube.
15. Route the 1/4 in. plastic tube to your shop's air supply and connect it with the adapter.
16. Replace the button box cover with a 3 mm hex wrench and the screws that you set aside in Step 2.
Adjust the Power Drawbar
After installing the Power Drawbar, you must adjust it.
NOTICE! After the initial installation, you must complete a final drawbar tension adjustment. For more
information, see "Adjust the Drawbar Tension" (below). If you don't complete a drawbar tension adjustment,
there's a risk of tool pull-out.
Complete the following steps in the order listed:
Adjust the Drawbar Tension 17
About Drawbar Tension 18
Adjust the Initial Setup 18
Adjust the Drawbar Tension
This adjustment sets the highest possible drawbar tension while still allowing the Power Drawbar cylinder to
release the tool. For information, see "About Drawbar Tension" (on the next page).
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NOTICE! After the initial installation, you must examine the drawbar tension weekly. During periods of heavy
use, examine the drawbar tension more frequently. If you don't, there's a risk of tool pull-out.
To adjust the drawbar tension:
1. Put an empty Tormach Tooling System (TTS) tool holder into the collet.
2. While using one hand to support the tool holder, use the other to push the Release Tool button.
3. Dependingon whether the tool holder releases or not, do one of the following:
lIf the Tool Holder Releases Tighten the Power Drawbar in quarter-turn increments with two
adjustable wrenches. After each turn, push the Release Tool button. Stop when the tool holder does
not release. Then, loosen the Power Drawbar one quarter-turn with two adjustable wrenches.
lIf the Tool Holder Doesn't Release Loosen the Power Drawbar in quarter-turn increments with
two adjustable wrenches while pushing the Release Tool button. Stop when the tool holder releases.
4. Make a visual reference to help you set or adjust the drawbar tension in the future: use a paint pen to make
a witness mark on both the head of the drawbar and the end of the spindle.
About Drawbar Tension
While machining, the Tormach Tooling System (TTS) collet holds a Tormach Tooling System (TTS) tool holder in the
spindle by applying a clamping force to both the shank and the shoulder of the tool. The tension force that is
applied to the drawbar pulls the Tormach Tooling System (TTS) collet into the spindle taper, which then applies the
clamping force to the Tormach Tooling System (TTS) tool.
The force on the drawbar — known as drawbar tension — is applied differently depending on the tool changing
method:
lAutomatic (using the Power Drawbar) Tension is applied by the compressed spring washers.
lManual Tension is applied when you tighten the drawbar into the collet using a wrench.
Adjust the Initial Setup
In this adjustment, you'll verify that there's enough clearance between the end of the drawbar and the Power
Drawbar cylinder.
NOTICE! If you don't do this adjustment, there's a risk that the drawbar can loosen, or that operations can be
louder than normal.
1. Examine the space between the hex head screw on the Power Drawbar cylinder's rod and the top of the
drawbar.
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Figure 22: Correctly spaced drawbar and Power Drawbar cylinder.
2. Verify that the gap is between 3/64 in. and 1/8 in. (1 mm and 3 mm). Depending on the size of the gap, do
one of the following:
lBetween 3/64 in. and 1/8 in. (1 mm and 3 mm) You have completed adjusting the initial setup. Go
to "Operation" (page22).
lLess Than 3/64 in. (1 mm) Go to Step 3.
3. Disconnect the shop's air supply from the Power Drawbar button.
4. Pull out the quick-release pin.
5. Pivot the Power Drawbar cylinder assembly to the left so that you can access the Power Drawbar cylinder's
rod.
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Figure 23: Power Drawbar cylinder pivoted to the left.
6. Remove the hex head screw on the Power Drawbar cylinder’s rod with an adjustable wrench, and set it
aside.
Figure 24: Hex head screw on the Power Drawbar cylinder's rod.
7. Remove the M16 washer from the Power Drawbar cylinder’s rod, and set it aside.
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TD10542: Owner's Guide: 1100M® Power Drawbar (0520A)