Harbor Freight Tools 44991 User Manual

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MINI VERMINI VER

MINI VER

MINI VERMINI VER

DRILLING MACHINEDRILLING MACHINE

DRILLING MACHINE

DRILLING MACHINEDRILLING MACHINE

TICAL MILLING/TICAL MILLING/

TICAL MILLING/

TICAL MILLING/TICAL MILLING/

44991

ASSEMBLY AND OPERATING INSTRUCTIONS

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www.harborfreight.com

Copyright © 2000 by Harbor Freight Tools®. All rights reser ved. No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools.

For technical questions and replacement parts, please call 1-800-444-3353

Specifications

ITEM DESCRIPT IO N

Power Consumpt ion 120 VAC, 60 Hz, single phase Motor 4/5 HP Speed Ranges 0 ~ 1100 low RPM and 0 ~ 2500 high RPM Spindle R-8 Taper Chuck JT33 Taper; 7/64 to 1/2 i nch capacity End Mill Capacity 1/2 inch Face Mill Capacity 1 inch Drill Capacity 1/2 inch Micro Feed Scale 0.002 inch per line Depth Scale 0 to 12 inches in 1/16 inch increments

Table Slot W idth 1/2 inch Table Size 15-7/8 (L) x 3-11/16 (W) inches

Unit Height 33-11/16 inches

Weight 115 lbs.

Save This Manual

You will need the manual for the safety warnings and precautions, assembly instructions, operating and maintenance procedures, parts list and diagram. Keep your invoice with this manual. Write the invoice number on the inside of the front cover. Keep the manual and invoice in a safe and dry place for future reference.

Safety Warnings and Precautions

WARNING: When using tool, basic safety precautions should always be followed to reduce the risk of personal injury and damage to equipment.

Read all instructions before using this tool!

1. Keep work area clean. Cluttered areas invite injuries.

2. Observe work area conditions. Do not use machines or power tools in damp or wet locations. Don’t expose to rain. Keep work area well lighted. Do not use electrically powered tools in the presence of flammable gases or liquids.

3. Keep children away. Children must never be allowed in the work area. Do not let them handle machines, tools, or extension cords.

4. Store idle equipment. When not in use, tools must be stored in a dry location to inhibit rust. Always lock up tools and keep out of reach of children.

5. Do not force tool. It will do the job better and more safely at the rate for which it was intended. Do not use inappropriate attachments in an attempt to exceed the tool capacity.

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6. Use the right tool for the job. Do not attempt to force a small tool or attachment to do the work of a larger industrial tool. There are certain applications for which this tool was designed. Do not modify this tool and do not use this tool for a purpose for which it was not intended.

7. Dress properly. Do not wear loose clothing or jewelry as they can be caught in moving parts. Protective, electrically non-conductive clothes and non-skid footwear are recommended when working. Wear restrictive hair covering to contain long hair.

8. Use eye and ear protection. Always wear ANSI approved impact safety goggles. Wear a full face shield if you are producing metal filings. Wear an ANSI approved dust mask or respirator when working around metal and chemical dusts and mists.

9. Do not overreach. Keep proper f ooting and balance at all times. Do not reach over or across running machines.

10. Maintain tools with care. Keep tools sharp and clean for better and safer performance. Follow instructions for lubricating and changing accessories. Inspect tool cords periodically and, if damaged, have them repaired by an authorized technician. The handles must be kept clean, dry, and free from oil and grease at all times.

11. Disconnect power. Unplug tool when not in use.

12. Remove adjusting keys and wrenches. Check that keys and adjusting wrenches are removed from the tool or machine work surface before plugging it in.

13. Avoid unintentional starting. Be sure the switch is in the Off position when not in use and before plugging in.

14. Stay alert. Watch what you are doing, use common sense. Do not operate any tool when you are tired.

15. Check for damaged parts. Before using any tool, any part that appears damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment and binding of moving parts; any broken parts or mounting fixtures; and any other condition that may affect proper operation. Any part that is damaged should be proper ly repaired or replaced by a qualified technician. Do not use the tool if any switch does not turn On and Off properly.

16. Guard against electric shock. Prevent body contact with grounded surfaces such as pipes, radiators, ranges, and refrigerator enclosures.

17. Replacement parts and accessories. When servicing, use only identical replacement parts. Use of any other parts will void the warranty. Only use accessories intended for use with this tool. Approved accessories are available from Harbor Freight Tools.

18. Do not operate tool if under the influence of alcohol or drugs. Read warning labels on prescriptions to determine if your judgment or reflexes are impaired while taking drugs. If there is any doubt, do not operate the tool.

19. Use proper size and type extension cord. If an extension cord is required, it must be

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of the proper size and type to supply the correct current to the tool without heating up. Otherwise, the extension cord could melt and catch fire, or cause electrical damage to the tool. This tool requires use of an extension cord of 0 to 10 amps capability (up to 50 feet), with wire size rated at 18 AWG. Longer extension cords require larger size wire. If you are using the tool outdoors, use an extension cord rated for outdoor use. (signified by “WA” on the jacket).

21. Maintenance. For your saf ety, service and maintenance should be performed regularly by a qualified technician.

Note: P erformance of this tool (if powered by line v oltage) may vary depending on varia-

tions in local line voltage. Extension cord usage may also affect tool performance. Warning: The warnings, cautions, and instructions discussed in this instruction manual

cannot cover all possible conditions and situations that may occur. It must be understood by the operator that common sense and caution are factors which cannot be built into this product, but must be supplied b y the operator.

Unpacking

When unpacking, check to make sure the following parts and accessories are included.

ITEM DESCRIPTION

A La rge Wrench

L J

B 13 mm Dri ll Chuck wi th Ta per Shank C Oil Bottle D Fixing Pin E L - Hex. Wrenche s, S: 3, 4, 5, 6 F Socket H ead Wrench, D: 45-52 G Dou ble-end Wrenche s, 8-10, 14-17 , 17-19 HChuck Key

IHandle

J T-nut

K F use, 5A (110 VAC )

LDraw Bar

If any parts are missing or broken, please call Harbor Freight Tools at the number on the cover of this manual as soon as possible.

Installation

1. Place the machine on a level, flat, and heavy work table or bench; sufficient to support weight and use of product and with sufficient light, and enough side room to allow movement of the W orking Table (#19).

2. Secure the machine to the appropriate table or bench using four hex screws (not supplied), by screwing them through the base mounting holes.

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REV 11/02

3. An optional oil pan can be placed under the machine before it is mounted to the table.

4. Before operation, loosen the slide, worktable, and drill-mill spindle. They were locked for shipping.

5. Remove all packing material and clean machine with nonflammable solvent. Oil the machine according to the lubrication requirements before running the machine.

Assembly

1. Install the Chuck.

- Thoroughly clean the tapered hole in the Chuck (164) and the Spindle (79) shaft of all dirt, grease, oil, and protective coatings (paint thinner may be necessary).

- Slide the Chuck onto the Spindle shaft.

- Turn the Chuck sleeve clockwise and open the jaws completely.

- Tap the nose of the Chuck lightly with a piece of wood to securely set the Chuck.

2. If necessary, screw the Handles into the Small Hand Wheels.

3. Check the angle of the Vertical Support (68) for true vertical. Check all bolts for tightness.

Operation

This Mini Milling/Drilling Machine is capable of machining metal and nonmetallic stock by cutting, drilling, and milling. It can cut circular surfaces, both inside and out, cones, mill planes or grooves, and other cutting functions depending on the tools used.

The machine consists of the following main components as shown in the photo below.

Motor (127)

Electrical Box (69)

V ertical Support (68)

Balance Mechanism Assy.

Emergency Stop Switch (37)

Limit Block (65)

Connecting Strut (72)

Small (fine) Feed Wheel (93)

Headstock and Spindle Box (49)

Speed Control Knob (134)

Longitudinal Feed Hand Wheel

Base (1)

Working T ab le (19) Saddle (35)

Cross Feed Hand Wheel (5)

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Checks before Operation

1. Turn on the machine by lifting the cov er and pulling out the Emergency Stop Switch (137).

2. Tur n the Speed Control Knob (134) and verify spindle speed changes.

3. Verify that the spindle is rotating clockwise.

4. Operate the Longitudinal Axis (Working Table), Cross Axis (Saddle Seat), and Ver tical Axis (Vertical Support), and verify their proper operation and movement.

Caution: Avoid injury to you or damage to machine. Unplug the power cord from the electrical outlet before performing an y adjustments, tool replacement, or maintenance.

Installation of the Taper Shank Cutter

1. Pull off the Protective Cover (126).

2. Wipe the spindle sleeve and taper of all dirt and grease.

3. Unscrew Clamp Bolt (101) and remove Dust Guard

(126)

(A)

(100).

4. Place the Taper Shank (B) into the Spindle (79) sleeve.

(G)

Cover the Cutter (C) (not included) end with an oil cloth

to protect hands and machinery .

5. Insert the Fixing Pin (accessory D) on the right side of

(101)

(100)

the Spindle sleeve. Refer to page 4.

6. Using the #14 open end wrench (accessory G), tighten (clockwise) the Spindle draw bar (A) to lock in the Taper Shank Cutter into the Spindle.

7. Pull out the Fixing Pin and replace the Protective Cover.

Note: For illustration

Removal of the Taper Shank Cutter

1. Pull off the Protective Cover (126).

purposes only. Only Chuck with Taper Shank (164) is included.

(C)

2. Insert the Fixing Pin (accessory D) on the right side of the Spindle sleeve.

(D)

(B)

3. Using the #14 open end wrench (accessory G), loosen (counterclockwise) the Spindle draw bar (A) to unlock the Taper Shank Cutter in the Spindle.

4. Using a plastic hammer, gently tap the Taper Shank (B) until it breaks free.

Place a cushion on the Working Table (19) to protect the assembly if it falls out.

5. Replace the Taper Shank Cutter with the Drill Chuck (or other tool) if desired.

Travel Adjustment

Adjusting the Limit Block (65) can control the travel of the Spindle Box.

1. Loosen Handle (30) attached to the Limit Block (65).

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REV 12/04

2. Adjust the position of the Limit Block (65) up or down. Refer to the Ruler (67) on the side of the Vertical Support (68).

3. Tighten the Handle.

Adjusting the Vertical Support Angle

1. Using the Large Wrench (accessory A),

(68)

loosen Lock Nut (70) only enough to allow movement of the Vertical Support (68).

(70)

Caution: A void injury or damaging machine, hold the Vertical Support in place to keep it from falling to the left or right during adjustment.

2. Adjust the Vertical Support angle as needed (45 degrees left or right, maximum). Check Ruler (44) for angle.

3. When the Vertical Support is at the desired angle, tighten Lock Nut (70) again.

Basic Drilling and Milling Procedure

During the following procedure, it may be helpful to refer to the machine photo on page 5.

1. Make desired changes and adjustments to the machine for drilling or milling.

2. Set an appropriate speed for drilling or milling the workpiece.

Use the Speed Control Knob (134) to adjust the Spindle speed. For cutting metal, the

speed range should be between 200 to 2500 RPM. Faster speeds are generally used when milling softer materials and drilling small holes; And slower speeds for milling harder material and drilling larger holes.

3. Using a fixture (not supplied) mount the workpiece to the Working Table (19).

4. Adjust the Limit Block (65) height.

This will enable Spindle movement to the desired cut, and disable an over cut which

could damage the workpiece fixture or Work Table.

5. Adjust the Working Table Longitudinal Feed Hand Wheel (X-Axis) and the Cross Feed (Y-Axis) Hand Wheel (5) into position for milling or drilling.

One step turn of the Hand Wheel moves the Work Table 0.03 mm; one complete turn

moves it 1.5 mm.

6. Remove any tools or obstacles from in and around the Work Table.

7. Tur n the machine on. Lift the Emergency Stop Switch (137) cover, and pull button out.

8. If necessary, adjust the Spindle speed with the Speed Control Knob (134).

9. Begin milling or drilling.

Use the Operating Lever (58) to make large adjustments to the Spindle height. For fine

adjustments, use the Fine Feeding Wheel (93). Refer to the ruler on the Vertical Support to determine drilling or milling depth. Caution: Keep hands and fingers clear of the working table and workpiece while the machine is in operation.

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10. When the drilling or milling is completed, press in on the Emergency Stop Switch and close its cover.

11. Unplug the line cord from the electrical outlet and clean the machine of all debris.

Maintenance

Caution: Avoid injuries or damage to equipment. Before performing any maintenance on this machine, unplug the power cord from the electrical outlet.

Lubrication Requirements

1. Using a light oil and clean cloth, after each use, wipe down all metal parts of the machine to prevent rusting.

2. Using machine lubrication grease, periodically apply to the X-axis feed screw (saddle seat), Y-axis feed screw (working table), and Z-axis feed gear rack (vertical support).

Periodic General Maintenance

1. Inspect all moving parts for lack of lubrication. If necessary, lubricate as described above.

2. Using compressed air, blow the machine clean of all foreign material. Wear eye protection during this operation.

3. Check all adjustment screws, bolts, and handles for tightness.

4. Store cutting tools in a wooden box or other moisture proof package.

5. Cover the machine when not in use.

6. Sharpen cutting tools as soon as they become dull.

7. Always keep the taper shank clean.

8. Store all tools and accessories in a clean and dry location, near the machine.

9. Always use the supplied tools and wrenches to make repairs and adjustments.

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUF ACTURER AND/OR DISTRIBUT OR HAS PRO VIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUF ACTURER NOR DISTRIBUT OR MAKES ANY REPRESENTA TION OR W ARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THA T ALL REP AIRS AND PARTS REPLA CEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NO T BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INST ALLATION OF REPLACEMENT PARTS THERETO .

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