Scientifica LBM-7 User manual

LBM-7 Manual
Manipulator
Copyright © Scientifica Ltd 1998
All Rights Reserved

2
TABLE OF CONTENTS
1. INTRODUCTION
1.1. Overview
2. INITIAL INSPECTION
2.1. Visual Inspection
2.2. Quality Control
3. INSTALLATION
3.1. Installing the Microscope Mount
3.1.1. PCS-500 Series Microscope Mounts (Optional)
3.1.2. Universal Post and Platform Mount (Optional)
3.2. Mounting the LBM-7 Manual manipulator to your Microscope Mount
3.3. Configuring the LBM-7 Manual manipulator
3.3.1. Right-Sided Operation
3.3.2. Left-Sided Operation
3.4. Mounting a Pipette
3.4.1. Accessing the V groove.
3.4.2. Setting the angle of the probe clamping assembly
3.5. Mounting an Extension Bracket (Optional)
3.6. Mounting an L-shaped Bracket (Optional)
3.7. Mounting a Sliding Bracket (Optional)
3.8. Mounting the Burleigh Inchworm Motor™ Mounting Bracket (Optional)
3.9. Fitting the Extra Smooth Adjusters (Optional)
4. OPERATION
4.1. Adjusting the Approach Angle
4.2. Changing Pipettes
4.3. Setting the Adjustable Stop (in base rotary stage)
5. MAINTENANCE AND SERVICE
5.1. Troubleshooting
6. SPECIFICATIONS
7. DIMENSIONAL DRAWINGS
8. WARRANTY - Please complete and return

3
1. INTRODUCTION
1.1. Overview
The LBM-7 Manual manipulator is a compact, stable and robust 7-Axis micropositioner
for high precision 3D manual positioning. Micron resolution means that you are assured
of fingertip control.
Although it has been designed for the alignment of stimulation electrodes and
perfusion pipettes during patch clamp recording experiments, the characteristics of
the instrument are useful for many other applications requiring manual precision
positioning capabilities.
The manipulator is easily mounted on or next to your microscope. A custom built probe
clamping assembly, with user selectable mechanical stops, is provided for holding
stimulation electrodes and perfusion pipettes with a diameter of up to 10 mm. High
quality, pre-stressed linear ball bearing stages with 25mm of travel (12.7mm in the Y
axis) guarantee consistent performance and reliability. Special rotational adjustments
optimise pipette working angles and ensure quick and easy pipette exchange.
2. INITIAL INSPECTION
2.1. Visual Inspection
The LBM-7 Manual manipulator has been packaged in a special carton designed to
give maximum protection during shipment. If the outside of the shipping carton is
damaged, notify your shipping department immediately. The shipping department may
wish to notify the carrier at this point.
a) If the shipping carton is undamaged externally, carefully remove and identify
all of the components listed below.
The LBM-7 Manual manipulator consists of the following components:
•LBM-7 Manipulator Assembly (4 linear stages; 2 rotary adjustments and
probe clamping assembly)
•Mounting Kit
•The LBM-7 can be attached directly to metric or imperial through holed
patterns
Metric: Imperial: Allen Keys:
M6 x 40mm screws (Qty: 4) ¼-20 x 1.5” (Qty: 4) 2mm (Qty: 1)
M6 x 25mm (Qty:4) ¼-20 x 1” (Qty: 4) 2.5mm (Qty: 1)
M6 Nuts (Qty: 4) ¼-20 nuts 5mm (Qty: 1)
M6 Washers (Qty: 4) ¼-20 washers 3/16” (Qty: 1
b) Optional Components may include:
•Extension Bracket for probe clamping assembly
•Sliding Extension Bracket for probe clamping assembly
•Burleigh Inchwormmotor mounting Bracket
•L-shaped off-set bracket
•Extra Smooth Adjusters

4
If any components are missing, contact Scientifica in the UK or your local
representative. Save the special carton for future storage or transportation of the
LBM-7 Manual manipulator.
2.2.1 Quality Control
Each LBM-7 Manual manipulator undergoes many stages of inspection, including a
pre-shipment burn-in. It is designed for years of trouble-free operation. In the unlikely
event that problems occur, please contact Scientifica in the UK or your local
representative for instructions. Our Customer Service team are ready to help with
advice, parts and repair services.
3. INSTALLATION
Correct mounting is essential for providing good system performance. It is important
that the mounting system be mechanically and thermally stable, whilst providing
flexibility for different experimental set-ups.
3.1. Installing the Microscope Mount
Scientifica recommends using a microscope mount that attaches directly to the
user’s microscope or a post and platform style mount. These methods provide
excellent stability and convenience.
3.1.1. Universal Post and Platform Mount (Optional)
The Post and Platform is available as an alternative to the microscope mounts. This is a
universal solution and particularly useful for upright microscopes. It can be secured to
the top surface of the isolation table either directly or via a magnetic base.
Two options are available:
Model Description
PCS-500-MD11 Universal Post and Platform with Magnetic Base
PCS-500-MD12 Universal Post and Platform without Magnetic Base
Please note that because the post is mounted separately from the microscope, it is
important for the microscope to be rigidly mounted to the same surface as the post
mount. This may require modification to the microscope, for example, removing the
rubber feet, and/or clamping the microscope to the base plate. If this is not carried out
then the two items may move in relation to one another and drift may be apparent.
3.2. Mounting the LBM-7 Manual manipulator to your Microscope
Mount
The LBM-7 Manual manipulator is compatible with both metric and imperial sized
through patterned holed mounts.
3.3. Configuring the LBM-7 Manual manipulator
The symmetrical design of the LBM-7 Manual manipulator makes it easy to
configure for right-sided operation (Section 3.3.1) or left-sided operation (Section
3.3.2) without the need for any adapter kits.
CAUTION: Do not tighten, loosen or remove any of the bearing adjustment screws
on the side of each stage otherwise the manipulator will need to be returned to
Scientifica for adjustment or reassembly. This is not covered under warranty.

5
3.3.1. Right Sided Operation
When shipped, the LBM-7 Manual manipulator is configured for right-sided
operation. To convert a LBM-7 Manual manipulator to left-sided operation, please
follow the instructions in 3.3.2
3.3.2. Left Sided Operation
To reconfigure the LBM-7 Manual manipulator for left-sided operation:
•If the Manipulator is already configured for right-sided operation, remove any
items attached (e.g. pipette, stimulation electrode etc). Detach the
manipulator from microscope mount and mounting adapter plate (Section 3.1).
•Carefully turn the manipulator upside down so that the base of the manipulator
is visible. (Fig. 1)
•Insert the 5mm allen wrench into the
centre hole and use it to unscrew (turn
anticlockwise) the M5 screw holding the
X and Y stages together (Fig. 2). This
screw is captured and so will not be
able to be removed.
•The manipulator can now be divided into two pieces with Y, Z and approach
axes forming one piece (Fig. 3) and the X axis and base rotary stage forming
the other (Fig. 4). Due to the tight manufacturing tolerances during, these parts
may be quite stiff to pull apart but will separate once the allen bolt has been
unscrewed.
•Using the 2mm allen wrench, loosen both of the recessed grub screws, one on
either end of the black base (Fig. 5). These grub screws set a mechanical stop
located within the base of the manipulator. Only one of these grub screws is
needed to set the mechanical stop depending on which is easiest to access.
Fig. 3 Fig. 4
Fig. 2
Fig. 1

6
Loosen the base rotary stage by pushing the lever on the base of the
manipulator to the left (Fig. 6). This will allow the stage to be rotated through
180oso that it is repositioned on the left hand side (Fig. 7).
Reassemble the two pieces of the manipulator
together using the 5mm allen wrench. To aid
alignment and make sure that the X & Y axes
are at ninety degrees to each other, there is a
male and female square area milled in to the X
and Y stages.
Fig. 8
Finally, release the approach axis using the 5mm allen wrench (Fig. 9) and rotate it
through 90 degrees so that the manual adjuster is repositioned on the left hand side (Fig.
10).
3.4 Mounting a Pipette
The LBM-7 Manual manipulator comes with a custom built ‘probe clamping
assembly’. This allows a holder with a diameter of up to 10 mm to be mounted.
Fig. 11
Fig. 6 Fig. 7Fig. 5
Fi
g
.10
Fig. 9

7
3.3.3. Accessing the V groove for mounting or removing a rod based holder.
At the end of the assembly is a recessed M3 allen bolt (Fig. 13). Using the 2 mm
allen key provided loosen the spring assembly to give the required amount of
access. Insert your rod based holder and tighten the allen screw until the rod is
securely clamped.
3.3.4. Setting the angle and repeatable rotation.
The clamping assembly has been designed so that it is possible to maintain the
approach angle (independent to the angle selected on the approach axis) by
setting a repeatable stop. This allows easy interchange of the pipette (or similar
device) as the whole assembly can be rotated upwards and then, relocated back
to its original position when finished. This can be done by releasing the black
thumbscrew on the front of the assembly which clamps it to the approach axis
stage (Fig. 14).
To change the position of the repeatable stop, use the 2mm
allen wrench supplied to slightly loosen the grub screws
located on either side of the approach axis stage. It is only
necessary to tighten the most convenient upper grub screw.
This allows a trapped insert which has a 180 degree slot cut
into it to rotate freely (Fig. 12). The home position is achieved
by a metal pin that protrudes from the back of the clamping
assembly coming to rest at either end of this slot (Fig. 13).
Simply rotate the assembly to the position that you require.
When you have found your desired position, rotate the
assembly anticlockwise for a full turn. This engages the insert
which sets the repeatable stop. Once back to the original
position, tighten the black thumbscrew, as any additional
movements to the assembly will alter the position of the insert.
Finally, tighten the grub screw on the side of the approach
axis stage to lock the position of the trapped insert.
Trapped insert.
Fi
g
. 14Fi
g
.13
Arrows indicate location of grub screws
on the approach axis stage.
Patch
Clamping
Assembly

8
3.4. Mounting an extension bracket (Optional)
An optional extension bracket is available for the LBM-7 Manual manipulator. This is
useful for those trying to achieve either a very shallow or very steep approach
angle. Similarly it can be used when access does not allow the manipulator to be
mounted close enough to the preparation. When this is ordered, you will be
supplied with:
Extension Bracket Accessory Kit:
Screws:
M3 x 10mm (Qty: 1)
M4 x 8mm (Qty: 1)
Allen Wrenches
2mm (Qty: 1)
2.5mm (Qty: 1)
3mm (Qty: 1)
The extension bracket is shaped like a dumbbell and is 116 mm long. At one end
there is a trapped insert as in the approach axis stage (see Fig. 12 in 3.4 above).
The other end mimics the back of the probe clamping assembly and slots into the
trapped insert on the approach axis stage.
Front Back
Use the M4x8mm and M3x10mm screws, and 2.5mm and 3mm allen keys,
provided, to mount this end of the extension bracket to the two threaded holes in
the trapped insert on the approach axis. Rotate the extension bracket to the
desired angle by releasing the grub screw on the sides of the approach axis stage
to adjust the position of the trapped insert. (See 3.4.2 above)
Mount the probe clamping assembly to the other end of the extension bracket. Ensure
the metal pin on the back of the probe clamping assembly slots into the 180 degree
slot in the trapped insert. When the probe clamping assembly is mounted to the
approach axis, the clamping assembly can now be set to an angle independent from
that of the extension bracket. Release the grub screw on the top of the extension
bracket using the 2mm allen key and follow the instructions in 3.4.2. above to set the
clamping assembly to your desired angle and lock the repeatable stop.
Fig. 15 Fig. 16
Fig. 17

9
Fig. 18 Fig. 19
3.6 Mounting an L-shaped Bracket (Optional)
An optional L-shaped bracket is available for the LBM-7 Manual Manipulator.
This bracket allows heavy loads to be mounted and repositioning of the approach
axis, thus increasing the versatility of the manipulator.
NB. When using the L-shaped Bracket, movement from the z-axis will be
unavailable.
When this is ordered, you will be supplied with:
L-shaped Bracket Accessory Kit:
M4 x 10mm Screw (Qty: 4)
M6 x 10mm Screw (Qty: 1)
3mm Allen Key (Qty: 1)
M6 washer (Qty: 1)
The L-shaped Bracket is 97mm long and 77mm high.
It can be attached to the body of the manipulator by either end. (Fig. 20)
Use the 5mm allen key and unscrew the M5 bolt at the back of the manipulator.
This will release the approach axis assembly and reveal the four threaded holes on
the main body of the manipulator (Fig. 222). Use the M4 x 10mm screws and 3mm
allen key, provided, and attach the bracket in the desired orientation.
Fi
Fig. 21
Fig. 22

10
Use the M5 screw and the washer provided to bolt the approach axis to the
desired hole of the L-shaped bracket (Fig. 23).
3.7 Mounting a Sliding Bracket (Optional)
An optional sliding bracket is available for the LBM-7 Manual Manipulator. The
Sliding Bracket, with 75mm of sliding travel and featuring mechanical stops gives
easy and rapid pipette exchange with assured repeatability.
When this is ordered, you will be supplied with:
Sliding Bracket Accessory Kit:
Screws:
M5 x 10mm screw (Qty: 2)
M4 x 10mm screw (Qty: 1)
M3 x 10mm screw (Qty: 1)
Allen Wrenches:
4mm allen key (Qty: 1)
3mm allen key (Qty: 1)
2.5mm allen key (Qty: 1)
The sliding bracket guide is rectangular and is 125mm in length and 29mm in
width.
This is bolted to the approach axis and the probe clamping assembly is attached
to the carriage.
Using the 2.5mm allen key, provided, remove both blanking grub screws from the
approach axis (Fig. 25). Align the four holes of the sliding bracket to the threaded
holes on the approach axis. Loosen the trapped insert. By releasing the two grub
screws on the approach axis, it allows the insert to rotate freely.
Bolt the sliding bracket to the approach axis with the screws and allen keys as in
Fig. 25 and then mount the probe clamping assembly to carriage
Fi
g
.24Fi
g
.23
Fig. 25 Fig. 26