World Precision Instruments KITE Manuale di manutenzione

WORLD

PRECISION

INSTRUMENTS

MANIPULATORS

Care and Maintenance

Serial No._____________________

www.wpiinc.com

INSTRUCTION MANUAL

082620

Manipulators

World Precision Instruments i

may be reproduced or translated into any language, in any form, without prior written permission of

World Precision Instruments, Inc.

CONTENTS

ABOUT THIS MANUAL ................................................................................................................... 1

INTRODUCTION .............................................................................................................................. 1

Notes and Warnings................................................................................................................. 1

INSTALLING THE TILT BASE.......................................................................................................... 2

ADJUSTING THE ANTI-DRIFT TENSION ON MICROMANIPULATORS .................................. 2

Adjusting the X Coarse Axis Drift........................................................................................... 3

Adjusting the Y-Axis Drift......................................................................................................... 6

Adjusting the Z Axis Drift......................................................................................................... 7

ACCESSORIES................................................................................................................................... 9

Manipulators.............................................................................................................................. 9

Optional Accessories................................................................................................................ 9

SPECIFICATIONS.............................................................................................................................. 9

KITE............................................................................................................................................... 9

M3301........................................................................................................................................10

MD4R .........................................................................................................................................10

MMJ.............................................................................................................................................10

WARRANTY .....................................................................................................................................11

Claims and Returns ................................................................................................................11

Repairs.......................................................................................................................................11

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Manipulators

World Precision Instruments 1

ABOUT THIS MANUAL

The following symbols are used in this guide:

This symbol indicates a CAUTION. Cautions warn against actions that can cause

damage to equipment. Please read these carefully.

This symbol indicates a WARNING. Warnings alert you to actions that can cause

personal injury or pose a physical threat. Please read these carefully.

NOTES and TIPS contain helpful information.

INTRODUCTION

Your micromanipulator is a precision instrument. It has been calibrated at the factory

and is ready for use. As with any delicate mechanical device, it needs your care and

attention for long term accurate performance. The following are some helpful hints to

make this possible.

Notes and Warnings

CAUTION: When handling a micromanipulator, set it down gently. Dropping it

(even a short distance) can be damaging to the general alignment and

adjustment.

CAUTION: When not in use, adjust the three (X-Y-Z) guide surfaces in such a

way that they are not exposed and cover the manipulator with a plastic bag.

Dirt is your biggest enemy.

CAUTION: If the manipulator is not in use for a prolonged time, occasionally

work the three surfaces repeatedly back and forth to keep the grease pliable.

Never oil the guide surfaces and under normal use you should not have to

apply grease for many years.

CAUTION: When using the motorized version always be sure to check that the

edge of the micrometer is aligned with the red dots on the motor housing in

each axis before using the manual control for coarse positioning. Running the

motorized axes repeatedly against either end limit can damage the motor. Be advised

that this damage is not covered by any warranty.

CAUTION: When using the dual tool holder micromanipulators, Models MD4R

and MD4L, be careful not to twist the revolving, spring-loaded axes too hard or

too far. This may damage the spring.

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INSTALLING THE TILT BASE

Fig. 1 (Left) M3 Tilting Base.

Fig. 2 (Right) The M3301 is installed on an M3 Tilting Base with an optional 5 lb. weight

(WPI# 5464).

To install the M3 Tilting Base, remove the ring clamp by removing the two screws with

the Allen wrench provided. Attach the manipulator to the tilting base by using the two

screws provided with the M3. Only two screws are required, because two holes are

used with a right-handed manipulator, and the other two holes in the tilting base are

used for the left-handed version.

ADJUSTING THE ANTI-DRIFT TENSION ON

MICROMANIPULATORS

Fig. 2 shows a side view of the M3301L manual micromanipulator. Depending on the

angle of application and the weight carried on any one guide-way, you may experience

some drift. This can be easily corrected. Follow the procedure on the following pages

to tighten the drag on the coarse manual slides.

In this manual, you can see how to adjust the anti-drift tension on the M3301, but

the procedure is similar for the DC3001R, DC3001L, MD4R, MD4L, KITE-L, KITE-R,

MMJR and MMJL. A micromanipulator axis may begin to move gradually under its own

weight even if it’s not being touched. This phenomenon is referred to as mechanical

drift. It occurs from normal use of the of the manipulator axes over time. Each coarse

axis control (shown below) of the micromanipulator has its own separate adjustment

to counteract drift. What follows is the basic procedure to eliminate drift in each of the

axes through adjustment of the anti-drift tension.

Manipulators

World Precision Instruments 3

X-Axis Coarse

Adjustment Knob

Z-Axis Coarse

Adjustment Knob

Y-Axis Coarse

Adjustment Knob

Adjustment Ring

Adjusting the X Coarse Axis Drift

1. TherststepistorotatetheX-AxisCoarseAdjustmentknobclockwiseuntilthex-

axis reaches the end of its travel in the fully extended position as indicated by the

black arrow in Fig. 3. This is necessary, because it provides better access to the

knob. In step 2, you will use a pair of pliers to secure this knob while loosening

the black locking nut so that the adjustment can be made.

Fig. 3 Fully extend the X-axis away from adjustment knob.

4 World Precision Instruments

2. If you have an M3301, use the hex key provided and loosen the set screw in the

X-Axis Coarse Adjustment knob (Fig. 4). For a KITE, see below.

Fig. 4 Loosen the set screw on the M3301.

If you have a KITE, use a pair of pliers to secure the X-Axis Coarse Adjustment

knob to prevent it from rotating (Fig. 5). Don’t grab the knob with the pliers

directly, because the jaws will cut into the aluminum knob. Instead, take a piece

of paper and fold it about ½“ wide over upon itself 5 or 6 times to make it thicker.

Then, wrap it around the knob to protect the knob.

0.5” wide paper

folded over

several times

Fig. 5 Wrap the knob with a thick layer of papers so the pliers do not gouge the

aluminum knob.

3. If you are right-handed, hold the pliers in your left hand. With your right hand

insert the special tool (WPI# 502105) (Fig. 6) into the black slot on the end of the

knob. Prevent the silver knob from turning, and rotate the tool counter-clockwise

to unscrew the black locking nut (Fig. 7).

Manipulators

World Precision Instruments 5

Hold knob and turn

screw counter-

clockwise.

Fig. 6 (Left) 502105 Manipulator Adjustment Tool

Fig. 7 (Right) The outer ring of the knob remains stationary, while you turn the inner

screw counter-clockwise.

4. Once the black locking nut is loose, the silver knob can be freely tightened or loos-

ened to adjust the amount of resistance to drift. To prevent the axis from moving

while making the tension adjustment, use your left hand to hold the body of the

axis securely while adjusting the silver knob (clockwise to increase tension) with

your right hand. At some point you will feel the resistance of the knob increase

as it begins to compress against the spring steel and nylon friction components.

Adjustment is somewhat arbitrary. When the amount of tension feels about right,

use the 502105 tool to re-tighten the black locking nut to secure the adjustment.

Then, test the anti-drift tension.

5. Test the drift resistance of the axis by pushing on it with your hand to see how

easily it moves. A good technique for doing this is to push on the axis body with

your left thumb while providing a counteracting force on the lower part of ma-

nipulator using your right hand (Fig. 8). When the tension is adjusted correctly, it

will not be easy to move the axis by pushing it.

6 World Precision Instruments

Apply mechanical

pressure on the X-

axis with left hand

thumb to test for

drift resistance.

Fig. 8 To test the drift resistance, press on the x-axis. It should not move easily.

NOTE: The correct amount of drift resistance depends upon the working orientation

of the manipulator, the load on the axis, and personal preference.

6. If the action feels too tight or too loose, unscrew the black locking nut again and

re-adjust the tension accordingly. It may be necessary to repeat this procedure

several times. Typically, the goal is to get the tension just tight enough to prevent

the axis from drifting under its own weight (while loaded), but not any tighter than

necessary to achieve this end. The correct amount of tension often occurs within

a narrow range of adjustment. If you make it too tight, the knob will be harder

than necessary to turn and the friction components will wear faster. This proce-

dure requires patience!

Adjusting the Y-Axis Drift

The adjustment of the Y-axis tension is performed with essentially the same

techniques as that described for the X coarse axis. The Y-axis is controlled by the

Y-Axis Coarse Adjustment knob shown in Fig. 9.

If the manipulator is operated in standard position (with the electrode clamp located

above the manipulator body as shown in Fig. 2, then the Y-axis does not typically have

a tendency to drift unless the manipulator body is tilted to the left or right relative to

the vertical plane passing parallel through the X-axis.

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