Haas DT-1 User Manual

Haas Technical Documentation
Effective Date:
DT-1 - Spindle - Tool Clamp System - Service
DT -1 - Spindle - Tool Clamp System - Service
January, 2010
This document describes removal and replacement procedures for the three spindle clamp components
of the DT-1 toolchanging system: The external cam from the toolchanger cambox, the rocker arm assem-
bly, and the air cylinder.
These components control drawbar clamping during tool changes. The DT-1 does not use a TRP; in-
stead, tool clamping/unclamping action is controlled by a cam (during tool changes) or an air cylinder
(during manual tool loading) that acts on a rocker arm, which in turn controls the clamp/unclamp action of
the drawbar.
The basic assemblies are shown in the following illustration, with all surrounding parts removed for clarity:
Drawbar
Cam
Rocker Arm
Air Cylinder
Cam
Follower
Basic Tool Clamp/UnclampAssembly
Rocker Arm
Tension S pring
Clevis
Pivot Block
Pivot Block
(two part)
Air Cylinder
Ret ainer Blocks
Manual
Release Arm
Drawbar
Cam Bearing
Release
Guide
To access components for all of these procedures, remove both panels of the spindle head cover. It may
be necessary to remove the inner part of the tool changer carousel cover to reach some of the sheetmetal
fasteners on the left-hand panel. There is a chip shield inside the left-hand panel that covers the drawbar
cam bearing through Z-axis travel that must also be removed.
Assemblies
Introduction
© Copyright 2015 by Haas Automation, Inc. No unauthorized reproduction.
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Haas DT-1 Specifications

General

Spindle Speed	15, 000 RPM
Table Size	30 in x 16 in
Control	Haas CNC
Travels X Axis	20 in
Travels Y Axis	16 in
Rapid Traverse X Axis	1, 575 ipm
Rapid Traverse Y Axis	1, 575 ipm
Rapid Traverse Z Axis	1, 575 ipm
Max Weight on Table	500 lbs
Spindle Taper	BT-40

Summary

Spindle Tool Clamp System Overview

Basic Tool Clamp/Unclamp Assembly Diagram

Diagram illustrating the core components of the spindle tool clamp system, including drawbar cam, rocker arm, and air cylinder.

DT-1 Spindle Rocker Arm Removal Procedure

Accessing Clevis Pin

Procedure for removing the C-clip and clevis pin from the air cylinder to access the rocker arm assembly.

DT-1 Spindle Rocker Arm Installation Procedure

Installing Pivot Blocks

Guidance on correctly installing the two-part pivot block onto the rocker arm shaft with attention to orientation.

DT-1 Spindle Air Cylinder Replacement

Air Cylinder Removal and Installation

Steps for removing the air cylinder from the assembly and installing a new one, including adjustment.

DT-1 Spindle Drawbar Cam Replacement

Drawbar Cam Access and Removal

Instructions for accessing the drawbar cam by removing the spindle motor fan and unfastening the cam.

DT-1 Spindle Manual Push-Out Adjustment

Measuring Tool Push-Out

Procedure to measure tool push-out using a split tool and indicator, aiming for a 0.030" value.

DT-1 Spindle Automatic Push-Out Adjustment

Automatic Push-Out Adjustment Steps

Steps for adjusting tool push-out controlled by the drawbar cam during automatic tool changes.

DT-1 Spindle Rocker Arm Release Guide Gap Adjustment

Checking and Adjusting Gap

Using feeler gauges to check and adjust the gap between rocker arm cam followers and the release guide.