Renishaw MIH User manual

User’s guide
H-1000-5200-08-A
MIH

© 2001 - 2004 Renishaw plc. All rights reserved.
Renishaw® is a registered trademark of Renishaw plc.
This document may not be copied or reproduced in whole or
in part, or transferred to any other media or language, by any
means, without the prior written permission of Renishaw.
The publication of material within this document does not imply
freedom from the patent rights of Renishaw plc.
Disclaimer
Considerable effort has been made to ensure that the contents
of this document are free from inaccuracies and omissions.
However, Renishaw makes no warranties with respect to the
contents of this document and specifically disclaims any implied
warranties. Renishaw reserves the right to make changes to this
document and to the product described herein without obligation
to notify any person of such changes.
Trademarks
All brand names and product names used in this document
are trade names, service marks, trademarks, or registered
trademarks of their respective owners.
Renishaw part no: H-1000-5200-08-A
Issued: 07 2004

1
MIH
user’s guide

2
FCC
(U.S.A)
Information to user (FCC Section 15.105)
This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15
of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This
equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
installation manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential
area is likely to cause harmful interference, in which case
you will be required to correct the interference at your own
expense.
Information to user (FCC Section 15.21)
The user is cautioned that any changes or modifications
not expressly approved by Renishaw plc or authorised
representative could void the user’s authority to operate the
equipment.
Special accessories (FCC Section 15.27)
The user is also cautioned that any peripheral device
installed with this equipment such as a computer, must
be connected via a high-quality shielded cable to insure
compliance with FCC limits.

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Care of equipment
Renishaw probes and associated systems are precision tools used for
obtaining precise measurements and must therefore be treated with
care.
Changes to equipment
Renishaw reserves the right to improve, change or modify its hardware
or software without incurring any obligations to make changes to
Renishaw equipment previously sold.
Warranty
Renishaw plc warrants its equipment provided that it is installed
exactly as defined in associated Renishaw documentation.
Prior consent must be obtained from Renishaw if non-Renishaw
equipment (e.g. interfaces and/or cabling) is to be used or substituted
for Renishaw equipment. Failure to comply with this will invalidate the
Renishaw warranty.
Claims under warranty must be made from authorised service centres
only, which may be advised by the supplier or distributor.
Patents
The features of Renishaw’s manual indexable head and associated
products are the subject of the following patents, patent applications
and registered designs.
EP 0142373 JP 2,098,080 US 4651405
EP 0293036 JP 3,018,015 US 5,088,337
EP 0392660 US Des 327854
Registered design (France): FR 278857

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Contents
Contents
1 Introduction ...................................................................................7
1.1 The MIH ...............................................................................7
1.2 Features ...............................................................................8
2 Recommendations ........................................................................9
3 Major components.......................................................................10
3.1 MIH - front ..........................................................................10
3.2 MIH - back..........................................................................10
3.3 LCD display ........................................................................12
4 Installation ...................................................................................14
4.1 Fitting the battery ...............................................................14
4.2 Fitting the probe .................................................................14
4.3 Connection .........................................................................15
4.4 Quill mounting ....................................................................15
5 Using the MIH .............................................................................17
5.1 Unlocking the head ............................................................17
5.2 Locking the head................................................................17
5.3 Positioning the head...........................................................17
6 The LCD/software facility ............................................................20
6.1 Introduction ........................................................................20
6.1.1 Datum mode ............................................................20
6.1.2 Simple mode ............................................................20
6.1.3 Memory mode..........................................................21
6.1.4 Sequence mode.......................................................21
6.1.5 Conserving battery life .............................................22

6Contents
6.2 Datum mode.......................................................................23
6.3 Simple mode ............................................................25
6.4 Memory mode ....................................................................28
6.5 Sequence mode .................................................................33
6.6 Using a sequence ..............................................................39
7 Summary of button operation......................................................42
8 Accessories.................................................................................45
8.1 MAPS (manual autojoint probe stand) ...............................45
8.2 Autojoint extensions/adaptors ............................................46
8.3 Shanks ...............................................................................47
8.4 AM1 adjustment module ....................................................47
9 Dimensions .................................................................................48
11 Electrical specification.................................................................50
11.1 Battery life ..........................................................................50
12 Troubleshooting...........................................................................51
13 MIH self test ................................................................................54
13.1 LCD test .............................................................................54
13.3 Battery test.........................................................................56
14 Maintenance................................................................................57

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Introduction
1 Introduction
1.1 The MIH
Renishaw’s MIH is a compact manual indexable probe head which
offers the flexibility and time saving normally associated with direct
computer controlled (DCC) machines and motorised probe heads.
The MIH is adjustable in two axes, both of which can be unlocked by
a single thumbwheel operation. A probe/stylus combination can be
orientated to 720 different positions and, once the head is locked,
each position will be repeatable to 1 µm* (0.00004 in) (2σ). Hence the
user can return to any chosen position without having to requalify the
probe/stylus tip.
The current position is shown on the integral liquid crystal display
(LCD) and is constantly updated during moves.
The programmable memory facility allows pre-datumed positions to be
stored in a memory within the head. Direction arrows shown on the
LCD take the user back to any one of 20 memorised positions which
can be arranged in any order to suit a particular inspection sequence.
The sequence can be edited as required.
Probes are attached to the MIH by means of the Renishaw autojoint,
allowing the user to easily exchange probes whilst maintaining
repeatability to 0.5 µm* (0.00002 in) (2σ). The autojoint is recessed
into the head, thus maximising the valuable working volume of the
machine.
*Measured at 67 mm (2.64 in) from autojoint (TP6A probe with
21 mm (0.83 in) stylus).

8Introduction
1.2 Features
• Manually indexable in 2 axes
• Positionally repeatable to 1 µm* (0.00004 in) (2σ)
• 720 selectable positions
• LCD display
• Programmable memory function
• Simple operation
• Compact size
• Renishaw autojoint probe mounting
• No special installation required
*Measured at 67 mm (2.64 in) from autojoint (TP6A probe with
21 mm (0.83 in) stylus).