Related Manuals for Renishaw MIH
Summary of Contents for Renishaw MIH
- Page 1 MIH user's guide www.renishaw.com MIH user's guide Document part number H-1000-5200-09-D Issued 02 2020...
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Page 2: General Information
Renishaw distributor. Warranty Renishaw plc warrants its equipment for a limited period (as set out in our Standard Terms and Conditions of Sale) 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. Failure to comply with this will invalidate the Renishaw warranty. -
Page 3: 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 Renishaw products 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. Packaging... -
Page 4: Product Compliance
Information to user (47 CFR 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. -
Page 5: Reach Regulation
Information required by Article 33﴾1﴿ of Regulation ﴾EC﴿ No. 1907/2006 ﴾“REACH”﴿ relating to products containing substances of very high concern (SVHCs) is available at: www.renishaw.com/REACH China RoHS Contact Renishaw plc or visit www.renishaw.com/ChinaRoHS for the full China RoHS tabulation. Issued 02 2020... - Page 6 (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.
- Page 7 MIH user's guide www.renishaw.com Recommendations DO mount the head as rigidly as possible in the CMM quill. DO ensure that the head is properly locked before attempting to use the probe to take points. DO support probe / extension set-ups of longer than 150 mm by hand when locking or unlocking the head.
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Page 8: Major Components
Mounting shank Lock / unlock thumbwheel LCD display Probe status LED LCD memory programming buttons Probe autojoint lock / unlock access window Renishaw autojoint probe mounting (recessed into A-axis swivel) A-axis zero position markers B-axis zero position markers Issued 02 2020... - Page 9 MIH user's guide www.renishaw.com MIH - back Description Battery housing 5-pin DIN connector Serial number Issued 02 2020...
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Page 10: Lcd Display
MIH user's guide www.renishaw.com LCD display Description A-axis positional data (0 to +105) B-axis positional data (-180 to +180) Low battery indicator Head locked symbol Rotation direction arrows Position confirmation symbol Sequence store indicator Memory mode indicator Memory number Issued 02 2020... -
Page 11: Installation
4. Insert battery as shown (negative end first). 5. Close door and secure retaining screw (do not overtighten). 6. Reset datum (See 'Datum mode'). NOTE: Incorrect insertion of the battery will not cause damage to the MIH. Issued 02 2020... -
Page 12: Fitting The Probe
4. Once qualified, probe / stylus combinations may be interchanged without the need to re-qualify. 5. After changing a probe, unlock and re-lock the head to ensure repeatability. Pin connections 1. Insert Renishaw 5-pin DIN plug into socket. 2. Head LED cathode 3. Ground 4. - Page 13 MIH user's guide www.renishaw.com Quill mounting Ensure that the head is securely mounted onto the CMM quill. Any rotational movement occurring during use will result in a loss of repeatability of positional data. CAUTION: Always fit mounting shanks with the screws supplied ﴾M3 × 5 mm ﴾0.20 in﴿ long﴿. The use of incorrect screws may cause serious internal damage to the head.
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Page 14: Locking The Head
MIH user's guide www.renishaw.com Using the MIH Unlocking the head Both A and B-axes are unlocked by a single turn of the thumbwheel in a counter-clockwise direction. The locked (key) symbol on the LCD will disappear. Probes / extensions longer than 150 mm should be supported by hand when locking or unlocking the head. - Page 15 MIH user's guide www.renishaw.com Positioning the head Rotation of each axis is achieved against a built‐in kinematic mechanism. This provides the user with discreet 7.5° incremental positions so that the head cannot be locked in a non-repeatable position. The B-axis is positioned by holding the lower housing and rotating until the required position is reached.
- Page 16 Memory mode The user can enter memory mode from simple mode by pressing either the M+ or M- button. In this mode the MIH memory can be programmed or used. In memory mode, chosen head positions can be stored in up to 20 memory stores. Each position is allocated a memory number (0 to 19).
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Page 17: Conserving Battery Life
MIH user's guide www.renishaw.com Conserving battery life To conserve battery life, the LCD will automatically power down if the head is left in an unlocked state and remains unused for more than 20 seconds. The LCD will return to its exact display before the 20 second time-out upon lock-up. - Page 18 Datum mode When the battery is first inserted or replaced, the MIH enters a datum mode routine which must be successfully completed prior to use. The A and B-axis position detectors within the head require datuming to a zero position before the LCD will display the correct A and B-axis positions.
- Page 19 MIH user's guide www.renishaw.com Step 4 The display will now change to show A and B-axis data at A0.0, B0.0. Datum is now set and the A and B-axis displays will show positional data when the head is locked and unlocked.
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Page 20: Simple Mode
Simple mode Following insertion of the battery and datuming of the head, the MIH is now ready to be used in simple mode. All data shown in the A and B- axis positions on the LCD will be 'live'. - Page 21 Attempting to move the head axes whilst locked will cause damage and may result in movement of the axis position detectors in severe cases. Should this occur, the MIH software will signal an axis error message and will ask for a datum reset when unlocked. See step 2 of the 'Datum mode' page for details of this routine.
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Page 22: Memory Mode
MIH user's guide www.renishaw.com Memory mode When the battery is first fitted, all memory locations are pre-set to A0.0, B0.0. Pressing either the M+ or M- button when in simple mode activates memory mode. Step 1 In this example the head is positioned and locked at A0.0, B0.0 in simple mode. - Page 23 MIH user's guide www.renishaw.com Step 3 The head is unlocked, repositioned and locked at A30.0, B30.0 in simple mode. Press M+ to activate memory mode. Step 4 Memory location M1 is displayed (A0.0, B0.0) since this was the last memory number used.
- Page 24 MIH user's guide www.renishaw.com Step 6 Pressing the M+ and M- buttons simultaneously for longer than half a second will store A30.0, B30.0 in memory location 2. The display will then 'blink' to show that the position data is stored in the memory.
- Page 25 MIH user's guide www.renishaw.com Step 9 Rotate the A and B-axes in the directions indicated by the arrows until both arrows disappear and the position confirmation block comes on. This confirms that the head is now in the position stored in the memory location indicated.
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Page 26: Sequence Mode
MIH user's guide www.renishaw.com Sequence mode When the battery is first inserted, sequence step 1 contains the contents of memory 1, sequence step 2 contains the contents of memory 2 and so on up to sequence step 19. Step 20 contains an end of sequence marker (E). - Page 27 MIH user's guide www.renishaw.com Step 3 Once the sequence step to be changed is chosen (in this example step 3 currently containing memory number 3), pressing the M+ and M- buttons simultaneously for between half a second and 3 seconds* changes the display.
- Page 28 MIH user's guide www.renishaw.com Step 5 The sequence now has three steps: step 1 containing memory 1 step 2 containing memory 2 step 3 containing memory 5. To end the sequence, the end of sequence marker (E) must be placed in sequence step 4. Pressing the M+ button will increment the sequence to step 4 and the display will show the current contents as memory 4.
- Page 29 MIH user's guide www.renishaw.com The sequence is now complete and is as follows: Step 1 (M1), Step 2 (M2), Step 3 (M5), Step 4 (E). Step 7 To exit from editing a sequence, press the M+ and M- buttons simultaneously for longer than 3 seconds. The display will give a choice of either ending sequence mode or using the sequence.
- Page 30 Using a sequence with MIH When using a sequence, the only requirement is to position the MIH following the axis direction arrows and lock up once the correct position is reached. On unlock, the sequence will automatically increment to the next step and the direction arrows will indicate the direction each axis must be rotated to, in order to achieve the position stored in that step.
- Page 31 MIH user's guide www.renishaw.com Step 3 When the head is next unlocked, the direction arrows will show the way to achieve the position stored in sequence step 3. On locking up in the correct position, the display will show sequence step 3 and its memory contents, along with the position confirmation block.
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Page 32: Summary Of Button Operation
MIH user's guide www.renishaw.com Summary of button operation Datum mode Button operation Effect [M+] or [M-] [No change] [M+] and [M-] Simple mode entered Simple mode Button operation Effect [M+] or [M-] Memory mode entered [M+] and [M-] held for longer than 5 seconds... - Page 33 MIH user's guide www.renishaw.com Select sequence step in sequence edit Button operation Effect [M+] Increments step number [M-] Decrements step number [M+] held for longer than 0.5 seconds Scrolls up step number [M-] held for longer than 0.5 seconds Scrolls down step number [M+] and [M-] held for longer than 0.5 seconds...
- Page 34 MAPS (manual autojoint probe stand) The Renishaw manual autojoint probe stand (MAPS) is a low-cost storage rack for up to six autojointed probe / extension combinations. As a complementary product to the MIH, MAPS allows the user to manually insert or remove pre-datumed probe / extension set-ups for protective storage or use with the MIH.
- Page 35 A large range of autojoint probe extensions / adaptors are available from Renishaw providing easy access to the deepest of features. Utilising the patented Renishaw autojoint, probing set-ups can be simply locked onto the MIH without the need to requalify each time, yielding maximum flexbility and valuable time saving.
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Page 36: Am1 Adjustment Module
Shanks Renishaw provide an extensive range of machine mounting shanks to fit most makes of CMM. Please take care when mounting the MIH with a parallel shank, as any rotational movements will invalidate any stored data. CAUTION: Always fit mounting shanks to the MIH by using the screws supplied (M3 5 mm (0.20 in) long). The use of longer screws will cause serious internal damage to the head. - Page 37 MIH user's guide www.renishaw.com Dimensions Issued 02 2020...
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Page 38: Mechanical Specification
0.5 μm ﴾0.00002 in﴿ * Probe status indicator Swept radius 62 mm (5.44 in) * MIH positional repeatability ﴾at the stylus tip﴿ ﴾2σ﴿ 1 μm ﴾0.00004 in﴿ * Accuracy of step spacing from theoretical position in each ±0.3 mm ﴾±0.012 in﴿ *... -
Page 39: Battery Life
MIH user's guide www.renishaw.com Battery life Typical battery life (10 minutes / day unlock time): Before low battery warning 40 weeks After low battery warning 11 days Battery life with heavy usage (20 minutes / day unlock time): Before low battery warning... -
Page 40: Troubleshooting
MIH user's guide www.renishaw.com Troubleshooting Poor repeatability (probe changing) Possible causes Checks / remedial action Loose mounting Ensure shank mounting screws are thight and shank is securely mounted in machine quill. Dirty or damaged autojoint Inspect autojoint probe connection contacts for damage and contamination. - Page 41 Check continuity of cabling from head to interface / machine control (refer to installation section for pin connections). Check probe / extensions are working correctly by exchange / elimination / continuity check - if faulty return to Renishaw service centre for repair.
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Page 42: Encoder Test
This test cycles round the LCD displaying each segment in turn. Pressing the M+ button will display all LCD segments simultaneously. Pressing the M- button will display the MIH software version number. Press the M+ and M- buttons simultaneously to transfer to the encoder test. -
Page 43: Battery Test
MIH user's guide www.renishaw.com Battery test This function is used by Renishaw when setting the low battery indicator threshold. To step through this function, press the M+ and M- buttons simultaneously to transfer to 'Datum mode'. Issued 02 2020... -
Page 44: Maintenance
MIH user's guide www.renishaw.com Maintenance The MIH contains no user serviceable parts. The MIH may be cleaned by wiping with a dry, lint-free cloth. Issued 02 2020... - Page 45 Renishaw plc +44 (0)1453 524524 New Mills, Wotton-under-Edge, +44 (0)1453 524901 Gloucestershire, GL12 8JR United Kingdom www.renishaw.com/cmmsupport For worldwide contact details, please visit our main website at www.renishaw.com/contact Issued 02 2020...
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