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Purpose
This document gives instructions on installing a 1100M/770M Power Drawbar.
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 | Cable Tie, 4 in., Nylon, Black (PN 31719) |
1 | |
1 | Extend (Red) Air Line |
1 | |
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 |
8 |
NOTE: If any items are missing, we can help. Create a support ticket with Tormach Technical Support at tormach.com/how-to-submit-a-support-ticket for guidance on how to proceed.
Before You Begin
Required Tools
This procedure requires the following tools. Collect them before you begin.
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Air 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.Air Volume For successive back-to-back tool changes, at least 2 cfm at 90 psi is required.
Exact air volume depends on the frequency of tool changes.Dry Air We recommend using a compressed air dryer, desiccator, or filter between the air compressor and the machine.
Lubricated Air You must lubricate the air with air tool oil.
Use the FRL Filter-Regulator-Lubricator (PN 32457) (included with the power drawbar kit) for this purpose.
Installation
NOTE: We're continuously improving our products, so your machine may vary from the photos in our documents and videos. For example, on newer machines, the pneumatic lines are mounted on the front of the Power Drawbar to prevent them from getting entangled or pinched in the spindle door. While the images may vary, the concepts still apply.
Prepare the Machine
If there's already a Tormach Tooling System (TTS) tool holder in the spindle, remove it.
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.
Power off the machine and the PathPilot controller.
Push in the machine's red Emergency Stop button, which removes power to motion control.
From the PathPilot interface, select Exit.
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+.
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Wipe all exposed drawbar mounting surfaces inside the spindle motor cabinet with a clean cloth.
Remove the spindle lock arm on the spindle door.
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Assemble the Power Drawbar
Find the drawbar that you set aside in "Disassemble the Original Drawbar" (page 5).
Remove the drawbar bushing from the drawbar, and set it aside.
Put Anti-Seize (provided) on the bottom of the drawbar head.
Find the eight spring washers provided.
Move one spring washer on the drawbar, with the convex side of the spring washer toward the drawbar head.
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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.
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Install the FRL
NOTE: We're continuously improving our products, so your machine may vary from the photos in our documents and videos. While the images may vary, the concepts still apply.
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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.
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Connect the 1/4 in. plastic tube to the Output port on the FRL.
Find the 1/4 in. plastic tube provided. Then, connect one end to the Input port on the FRL.
Put the 1/4 in. push-connect air fitting adapter on the loose end of the 1/4 in. plastic tube.
Route the 1/4 in. plastic tube to your shop's air supply and connect it with the adapter.
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.
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Find the three provided M14 flat washers.
Put one M14 flat washer under each mounting post on the Power Drawbar cylinder.
Operation
| Anchor | ||||
|---|---|---|---|---|
|
Change Tools With the Power Drawbar
WARNING! Ejection Hazard: If a tool is released from a turning spindle, it can become a dangerous projectile, causing death or serious injury. You must wait until the spindle is completely stopped before pressing the Release Tool button. Never press the Release Tool button while the spindle is turning.
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Put a new tool holder into the spindle.
Let go of the Release Tool button.
The Power Drawbar reverts to clamp mode and secures the tool in the spindle.
Power Drawbar Best Practices
Tool Holding Force
The Power Drawbar is designed to provide more than sufficient tool holding force to resist regular cutting loads. Machining practices outside of these situations may result in tool holder pull-out.
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NOTE: In the event of an air pressure loss, the power drawbar reverts to clamp mode.
Maintenance
Examine Air Pressure
Appropriate air supply helps with smooth actuation, and prevents premature component failure.
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Regularly examine the following wear items:
Spring Washers Inspect all spring washers once a month for cracks. If they're damaged, immediately replace them with Power Drawbar Spring Washer (PN 31319).
Tormach Tooling System (TTS) Collet and Drawbar Using the Power Drawbar may cause these items to wear faster than with a manual drawbar. Inspect them regularly, and immediately replace any damaged items with the following:
Diagrams and Parts Lists
TTS Power Drawbar Cylinder Exploded View
TTS Power Drawbar Cylinder Assembly Parts List
ID | Description | Quantity |
1 | Power Drawbar Mount Plate (PN 37747) | 1 |
2 | Pneumatic Cylinder, Double Acting, 100 mm Bore, 12 mm Stroke, 3-Stack (PN 31313) | 1 |
3 | Power Drawbar Standoff, M14 × 2 (PN 38282) | 3 |
4 | 2 | |
5 | 2 | |
6 | Screw, Hex Head Cap, M16 × 1.5 - 25 (PN 31322) | 1 |
7 | Washer, Flat, M16 (PN 31445) | 1 |
8 | Screw, Flat-Head Cap, M14 × 2 - 40 (PN 38285) | 3 |
9 | Tube, 1/4 in. OD, Plastic (Red) - 125 mm (PN 38408) | 2 |
Power Drawbar Push Button Exploded View
Power Drawbar Push Button Parts List
ID | Description | Quantity |
1 | Power Drawbar Push Button Base (PN 38217) | 1 |
2 | Power Drawbar Push Button Cover (PN 38218) | 1 |
3 | Push Button Air Valve (4-Way, 5-Port) (PN 37295) | 1 |
4 | Fitting, Male Connector, 1/4 NPT to 1/4 in. PTC (PN 32212) | 2 |
5 | 1 | |
6 | Fitting, Muffler (Flat), 1/8 NPT (PN 37297) | 2 |
7 | Screw, Button Head Cap (Flanged), M5 × 0.8 - 10, Stainless Steel (PN 38205) | 4 |
8 | Screw, Socket Head Cap, M4 × 0.7 - 50 (PN 38220) | 2 |
9 | Power Drawbar Push Button Spacer (PN 38219) | 2 |
10 | Decal, Power Drawbar, Release Tool (PN 37340) | 1 |
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