Introduction
This manual provides comprehensive instructions for the Doall Engine Lathe models 13, LD 1320, LD 1340, and LD 1360. It covers essential information regarding the machine's transportation, setup, operation, maintenance, and electrical systems. This edition was published in November 1979 and contains 52 printed pages.
Setup
Transportation
Proper transportation is crucial to prevent damage to the lathe. Use appropriate lifting equipment and secure the machine to avoid movement during transit. Refer to the lifting points indicated on the machine for safe handling.
Figure 1: Proper lifting and placement of the Doall Engine Lathe. The top image shows the lathe being lifted by a crane, secured with straps. The bottom image shows the lathe resting on foundation supports, with an 'X' indicating an incorrect placement area.
Cleaning and Foundation
Upon arrival, thoroughly clean the machine to remove any protective coatings or debris. Prepare a stable and level foundation capable of supporting the lathe's weight and absorbing operational vibrations. Ensure the foundation meets all local safety and structural requirements.
Levelling
Accurate levelling of the lathe is critical for precision machining. Use a precision level to adjust the machine's feet until the bed is perfectly horizontal in all directions. Incorrect levelling can lead to inaccuracies in workpiece dimensions and premature wear of machine components.
Nomenclature and Dimensions
This section details the various components of the Doall Engine Lathe, including their names, functions, and overall dimensions. It provides a comprehensive identification of 28 different control parts, along with specific buttons, knobs, and switches located on the thread and feed gear box, essential for machine operation.
Operating Instructions
Controls
Familiarize yourself with all control elements before operating the machine. Understand the function of each lever, button, and switch to ensure safe and efficient operation.
Headstock Operation
Instructions for engaging and disengaging the headstock gears, selecting spindle speeds, and monitoring headstock performance.
Installation of Chuck on Camlock Spindle Nose
Detailed steps for safely mounting and dismounting chucks on the Camlock spindle nose, ensuring proper alignment and secure fastening.
Gear Box
Guidance on selecting appropriate gear settings for various machining operations, including threading and feeding.
Thread and Feed Gear Box
Specific instructions for utilizing the thread and feed gear box to achieve desired feed rates and thread pitches.
Apron Operation
Details on operating the apron controls for longitudinal and cross feeds, including engagement and disengagement procedures.
Saddle
Information on moving and locking the saddle for precise positioning along the lathe bed.
Tailstock
Instructions for positioning, clamping, and using the tailstock for drilling, reaming, and supporting long workpieces.
Safety Devices
An overview of all integrated safety features and their proper use to prevent accidents during operation.
Thread Dial Indicator
How to use the thread dial indicator for accurate thread cutting operations.
Cutting Speed Chart
Reference chart for recommended cutting speeds based on material type and tool selection to optimize machining performance and tool life.
Maintenance
Lubrication
Regular lubrication is essential for the longevity and performance of your Doall Engine Lathe. Refer to the following:
- Table of Equivalent Lubricants: Provides a list of suitable lubricants from various manufacturers.
- Recommended Lubricants: Specifies the exact types and grades of lubricants for different machine parts.
To Change Oil
Follow these procedures for oil changes in critical components:
- Headstock: Instructions for draining and refilling headstock oil.
- Feed Gear Box: Steps for maintaining the oil level and changing oil in the feed gear box.
- Apron: Guidelines for apron lubrication and oil replacement.
- General Lubrication: Schedule and methods for lubricating other moving parts and bearings.
Adjusting Main Spindle End Play
Procedure for checking and adjusting the main spindle end play to maintain machining accuracy and prevent excessive wear.
Motor Drive
Maintenance guidelines for the motor drive system, including inspection of belts, pulleys, and electrical connections.
Brake
Instructions for inspecting and adjusting the machine's braking system to ensure effective and safe stopping of the spindle.
Electrical Equipment
Wiring Diagrams
Detailed wiring diagrams are provided for the standard machine and for models with optional features. These diagrams are essential for troubleshooting electrical issues and performing authorized electrical maintenance.
Standard Accuracy Chart
This chart outlines the expected accuracy standards for the lathe, useful for calibration and performance verification.
Specifications
- Models Covered: Doall 13, LD 1320, LD 1340, LD 1360
- Publication Date: January 1, 1979
- Language: English
- Print Length: 52 pages
- Publisher: Doall
- ASIN: B00FNTM236
- Metric Version Lathe: Includes specific information for metric versions, identified as P82971C.
Troubleshooting
This section provides guidance on identifying and resolving common operational issues. Consult the relevant sections of this manual for detailed procedures related to specific components. If a problem persists, contact a qualified service technician.
Warranty and Support
For information regarding product warranty or technical support, please refer to the documentation provided at the time of purchase or contact your authorized Doall dealer. This manual serves as an operational guide and does not contain warranty specifics.