M20 user guide.book - Newall Electronics Inc.
Contents
1. 0 0 0 0 2 3 Implementing the tool offset 4 4 Machine error eee 2 3 Notes and cautions 4 5 Calibration process 2 3 Calculator function 0 00000 eee 4 5 Setting the keyboard lock 2 4 Display and key modes 4 5 Setting the beep status 2 4 Operation ee 4 6 Saving the changes 2 4 Special features aan 5 1 Factory default settings 2 4 Selectable counting direction 5 1 Basic functions 000 ce eee eee es 3 1 Floating negative sign 5 1 Reset function a 3 1 Non volatile memory 000 eee 5 1 Setting a value A A A AAA a 3 1 Near zero warning s an anana 5 1 Smart numeric entry n anana naana 3 1 Keyboard lock 0 0 0 eee eee 5 1 Abs Inc mode a 3 1 NEWALL Appendix 1 Other information Pin connections NEWALL This manual explains the operation of the M20 DRO You should follow the basic steps systematically and take care to ensure that you perform all procedures carefully The M20 measures the displacement precisely and accurately To ensure the specified accuracies you must install the M20 correctly and precisely You should read this manual carefully and thoroughly before using the product Main f2. In cases where the current tool position is negative the negative sign is shown by the first digit of the value As the value increases the negative sign moves to the next digit This feature improves the readability of the display as compared to having the negative sign at the last digit Non volatile memory This memory is used to store 20 SDM values 4 tool offsets the settings of the DRO and the machine reference values Near zero warning This feature is to alert you when the tool is approaching the required position towards zero Keyboard lock During machining if you accidently reset any one of the axes then the current work piece may be damage To avoid this you can use the keyboard lock facility See Setting the keyboard lock on page 2 4 for further details 5 1 NEWALL Connector Sit e pam This appendix gives some further information that you may find useful when using the M20 Pin connections Pin connection details for 9 pin D F type connector DRO side Axis x y viewed from rear Recommended spares e Glass fuse slow blow as specified in DRO Specifications e Mains Cord e CPU PCB Assembly e Power supply Assembly with Back Plate Pin connections Connector For line receiver TTL interface optional Phase RM ee tl Phase RM VCC 5 Shield Gnd 0v Phase A 6 1 NEWALL A ABS pulse 3 3 ABS reference 3 3 Absolute mode 1 3 C Calibration fact
3. Setting the display resolution The same options are available for the display resolution The display resolution can never be lower than the scale resolution if you set the display resolution to be less than the scale resolution then it automatically changes it to the scale resolution To set the display resolution 1 Use the LEFT and RIGHT arrow keys to highlight the options 2 Press ENTER to select the required resolution While the display is showing displacement you can select the least count with which the display is updated For example If a reading is 5 456mm then it displays as 5 456 if the display resolution is 1 micron and 4 5 if the display resolution is 10 microns 2 2 Once you have selected the display resolution the decimal point is set automatically Once you have selected the display resolution the calibration factor is calculated and set The DRO is calibrated for machine errors using the calibration factor see for further information Setting the measurement units You can select inch or mm MM indicates metric measurement This applies to all the axes INCH indicates imperial measurement This applies to all the axes To select the measurement units 1 Use the LEFT and RIGHT arrow keys to highlight the options 2 Press ENTER to select the required measurement units Once you have selected the measurement units the DRO remains in this mode permanently and on line conversion to the o
4. If you select this mode in Engineering mode then keyboard entry is enabled You cannot lock the keyboard for a single axis Locking means that all the axes are locked simultaneously You can toggle these options by pressing the LEFT or RIGHT arrow key in Engineering mode To set the keyboard lock 1 Use the LEFT and RIGHT arrow keys to highlight the options 2 Press ENTER to select whether the keyboard lock is on or off 2 4 Setting the beep status BEEP ON If you select this mode then the Beep at keyboard entry is enabled BEEP OFF If you select this mode then the Beep at keyboard entry is disabled You can toggle these options by pressing the LEFT or RIGHT arrow key in Engineering mode To set the beep status 1 Use the LEFT and RIGHT arrow keys to highlight the options 2 Press ENTER to select whether the beep is on or off Saving the changes In Engineering mode when you change any single field then when the SAV CHG message appears you need to press the ENTER key to save the changes permanently otherwise the changes will be not be applied Factory default settings You can revert to the following factory default settings for the currently selected axis by pressing the ENTER key when the RST DFT message appears Parameter Default Setting DRO type MILL Scale Resolution 5 micron Display Resolution 5 micron NEWALL Parameter Measurement Unit Measurement Mode Coun
5. The value is stored and the current value becomes zero as this is the Job Zero position NEWALL Use the LEFT and RIGHT arrow keys to change the parameters in the field Recall or execute the Machine Reference 1 5 Press the REF key Select HOME gt MAC REF gt SET MC Select the axis for which you want the Machine Reference to be performed The last digit displayed on that axis starts to blink The DRO is waiting for an ABS pulse input from the scale Move the slide to sense an ABS pulse After receiving an ABS input from the scale the DRO inverts the current stored value of Machine Reference and shows it on the display Thus the Job Zero is achieved The DRO returns to normal counting mode Use the LEFT and RIGHT arrow keys to change the parameters in the field Preset mode You use Preset mode to travel a predetermined distance on the selected axis It is generally more convenient to locate the zero position on the display rather than reaching a complex figure such as say 10 675 by moving the slide You can do this with the Preset mode by making the destination point zero 3 5 NEWALL This chapter describes the M20 s special functions Circular bolt hole function You use this function to create a table of coordinates of holes on the perimeter of a circle You enter the geometrical data from the drawing circle centre coordinates starting angle r
6. Inch mode the decimal point is moved one position to the left You can also use this feature to avoid complicated calculation of conversion of units during setting and machining operations To change between units press the INCH MM key You can only toggle between the two options if you selected Inch MM for the X axis in Engineering mode Otherwise it remains as either Inch or mm Example If the counter is in MM mode MM LED is lit with the display showing 25 400 when you press the INCH MM key the display changes to 1 0000 which is the equivalent measurement in inches The Inch LED is then lit NEWALL 1 2 function You use this function to directly halve the current value on the axis You can use this function to find the centre of the job 1 Press the 1 2 key You are prompted by the message SELECT 2 Select the desired axis whose value needs to be halved by pressing the X or Y key on the front panel The value displayed on the desired axis is halved Executing the 1 2 function alters the origin of the axis Setting the reference Referencing The DRO has a built in feature to save the last reading at power off and restore the same reading at power on It is possible that the slide may have moved while DRO is powered off Hence the last reading stored by the DRO may not indicate the true position of the slide so you need to reference the DRO to the Datum With the M20 you can set a reference for
7. indicate that the corresponding axis is using diametric counting If these LEDs are off then the corresponding axis is using radial counting Blinks when the DRO is in Sleep mode General information Use the keypad to enter numeric values Use the ENTER key to confirm your numeric entry and return to the previous display while saving the parameters Use the C key to clear your numeric entries and return to the previous display without saving the parameters When DRO is not in numeric entry the 8 2 4 and 6 numeric keys work as UP DOWN LEFT and RIGHT arrow keys respectively Use the UP and DOWN arrow keys to move between different fields Use the LEFT and RIGHT arrow keys to toggle the parameters in a single field NEWALL Use the key to change the sign of your numeric entry value at any time The decimal point at the 7th digit and the INC LED on indicate that you are in Preset mode In Preset mode the display indicates the distance to go to target In this manual name denotes a dedicated key name 1 4 NEWALL This chapter describes how to setup the M20 You use this mode to set up the M20 to the required needs and specifications You should not use this mode during the normal working and usage of the M20 We recommend that you read the complete procedure for setting up the M20 before you implement the instructions The following sections describe each of th
8. machining or settings at predefined locations on a selected axis These predefined points are called ABS references or pulses and they are marked on the scale or transducer They are encountered by the DRO when it moves along the slide However this can only be used when the referencing function is enabled There are two methods for referencing Home Function mode and Machine Reference mode In the Home Function mode the display is set to 0 000 when the DRO senses the first Reference ABS pulse In the Machine Reference mode you can set the display to any predefined value after the DRO senses the first Reference ABS pulse 3 3 You move the slide to sense the ABS pulse All relevant points on work piece are then referenced from this ABS pulse position Home function The reference marks ABS pulses are located throughout the length of the scale or transducer You can always select any one ABS pulse as the reference The Home Function sets the display to 0 000 on encountering the first ABS pulse Thus you can permanently set a point on the machine table to be the origin This is useful in batch production The DRO can sense the ABS Reference pulse in both the directions However for repeat accuracies you must ensure that you only sense it in one You should always sense the same ABS Reference mark on the transducer that the DRO sensed the first time because the fob dimensions are referenced to this mark Setting the Home Functio
9. ABS pulse At A the counter shows a value say 11 875 This is the machine reference value 5 Now follow the procedure for storing the Machine Reference value see Setting the machine reference value on page 3 4 3 4 You have now successfully saved the machine reference figure and the current tool position of the axis i e A is marked as the Job Zero A becomes the new origin Setting the machine reference You can set the Machine Reference value on the axis as and when required to establish the Job Zero 1 Execute the setting machine reference function and move the slide towards B 2 Asthe ABS pulse is sensed at B the DRO restarts counting from the machine reference value stored earlier with sign reverse i e 11 875 This is the distance of the Home Zero from the Job Zero 3 In the example shown on page 3 4 if the slide is moved to A then the display shows zero as desired as A is the Job Zero The DRO can sense the ABS Reference pulse in both the directions However for repeat accuracies you must ensure that you only sense it in one You should always sense the same ABS Reference mark on the transducer that the DRO sensed the first time because the job dimensions are referenced to this mark Setting the machine reference value 1 Press the REF key 2 Select HOME gt MAC REF gt SET MC 3 elect the axis where you want to store the value for the Machine Reference 4 Enter 0 000
10. TSE M20 DRO Operation and Maintenance Manual NEWALL Introduction 00000 eee eee ee aaa 1 1 Rad Dia mode 0 00 cee eee eee eae 3 2 Main features 0 0 0 0 ce eee 1 1 Inch MM mode 2 0 0c eee ees 3 2 Specifications Aa 1 1 1 2 function a 3 3 Front panel aa 1 2 Setting the reference 3 3 END bha es Cee E E E ee 1 2 Referencing aaa 3 3 LCD indications 0 000 e eae 1 3 Home function aa 3 3 General information 000 eee 1 3 Machine reference function 3 4 Setup mode Engineering mode 2 1 Preset mode a nA a MAA AA NG ww sees 3 5 Entering engineering mode 2 1 Special functi0Ns aan 4 1 Selecting the DRO mode 2 1 Circular bolt hole function 4 1 Setting the scale resolution 2 2 Angular bolt hole function 4 2 Setting the display resolution 2 2 SDM function 4 2 Setting the measurement units 2 2 Programming the positions 4 2 Setting the measurement mode 2 2 sA EP 4 3 Setting the counting direction 2 3 Tool offset function 0 00000 ee 4 4 Setting the calibration 2 3 Entering tool offset values 4 4 Calibration factor
11. adius and number of holes to drill The DRO automatically generates the required coordinates for each hole The DRO showss the distance between the current tool position and the hole To achieve the desired hole position move the slide so that the DRO down counts to zero Parameters to be entered for a bolt hole ENTCNT O X coordinate of the centre ENTCNT 1 Y coordinates of the centre Radius Radius of the circle Angle a Starting angle for first hole Holes No of holes max 10 In the following diagram for the circle on the left the starting hole lies on the X axis so you must enter the angle as 0 000 For the circle on the right the desired holes are shifted by same angle with respect to the X axis so you must enter the the offset angle a 4 1 Y gt x If you enter a number greater than 10 for the number of holes then the message nvalid is shown You must then press the C key It is assumed that holes are equally spaced on the circle To set up a bolt hole Press the PCD key Select B HOLE Press the ENTER key Enter the X coordinate for the centre of the circle Enter the Y coordinate for the centre of the circle Enter the radius of the circle Enter the starting angle for the first hole o oe ae Se eS Enter the number of holes maximum 10 As the machine works the holes the display shows the number of the hole that the machine is drilling and the distance to the next hole When the j
12. e When you delete the last entered number ithe X axis shows 0 3 When you have entered the number press the Y axis key The Y axis legend shows Add 4 Toselect a different mathematical function press the Y axis key until the required option is displayed When you press the Y key the result of the current calculation is displayed in the X axis Thus if no sum has yet been performed the current entered number is displayed 5 You can now enter the next number Entering this number changes the X axis display 6 You can now either press ENTER to complete your mathematical operation See Example 1 or press the Y axis key again and keep the mathematical operations going See Example 2 7 Ifyou press ENTER the X axis shows the calculation result and the Y axis is blank You can press the CALC key at any time to exit the calculator function 4 6 Example 1 To perform the calculation 43 5 10 2 33 3 1 Press the CALC key to enter the calculation function Press the keys 4 3 5 2 3 Press the Y axis key until Sub appears on the display 4 Press the keys 1 0 2 5 Press the ENTER key to complete the calculation The result is shown in the X axis window 6 Press the CALC key to exit the calculator function Once you have pressed the ENTER key and the calculation result is displayed you have several options available e Press the CALC key to exit calculato
13. e the display shows SELECT on the X axis This message indicates that you have entered the Engineering mode This message also indicates the selection of an axis There is no need to re enter the Engineering mode to set another axis Selecting an axis allows you to enter the Engineering mode When you enter the Engineering mode the display shows the previously set parameters You set new parameters using the procedures given in the following sections If you have entered Engineering mode to make one particular change e g RAD to DIA you must press the ENTER key to validate this change Selecting the DRO mode The M20 has two modes Mill and Lathe You should select the one that you require Your selection affects the functions that are available e Mill mode includes Bolt hole functions e Lathe Mode includes Tool offset functions In Mill mode the TOOLS key has no function and in Lathe mode the PCD key has no function NEWALL To select the required mode 1 Select X or Y to select the axis 2 Use the LEFT and RIGHT arrow keys to highlight the options 3 Press ENTER to select Mill or Lathe Setting the scale resolution You can set the scale resolution to be 1 0 2 0 5 0 10 0 20 0 or 50 0 microns To set the scale resolution 1 Select X or Y to select the axis 2 Use the LEFT and RIGHT arrow keys to highlight the options 3 Press ENTER to select the required resolution
14. e parameters and the procedure for setting them In these instructions all the messages in quotes are actual displays on the selected axis Pressing the C key at any time suspends Engineering mode and shows the message END If you press the C key again the DRO shows the message SELECT If you press the ENTER key the DRO goes to normal counting mode Entering engineering mode To enter Engineering mode to setup the parameters for using the DRO 1 Turm on the DRO 2 Press ON OFF gt ABS INC gt ON OFF In Engineering mode only authorized users can set or check the parameters To accomplish this there is a password facility Software Lock The Software Lock Code has already been set in the DRO Software It is 123 You can ask for the Software Lock facility to be disabled The following messages appear ENTER at the X axis display position LOC at the Y axis display position If you enter an invalid Lock Code You have three chances to enter the correct code 2 1 If during these three chances you enter the wrong loc code number initially on the X axis then the message INVALID is displayed in a blinking form for 2 second and you then see the following messages TRY at the X axis display position AGAIN at the Y axis display position You can then enter the code again If you have entered the code incorrectly three times then the display shows END on the X axis If you enter a valid Lock Cod
15. eatures The M20 has the following features e Reset mode e Seta value e Abs Inc mode e nch mm mode e Setting the Reference e Rad Dia mode e Bolt hole pattern e Angular bolt hole function e 20 values SDM functions e 4 tool offsets e Calculator e Selectable counting direction e Floating negative sign e Non volatile memory e Near zero warning 1 1 e Keyboard lock e Fault signal indication e Self diagnostic mode Specifications The M20 has the following specifications Mains supply 90 265VAC 50 60Hz Fuse rating T800 Slow blow Power consumption 20 Watts max Operating temperature 0 C to 45 C Relative humidity 20 to 85 Non condensing Dimensions 267mm x 152mm x 82mm LxHxD Net weight 1kg Transducer input 5V TTL signal Dedicated Connector types 9 pin D F for transducer Maximum count 10000 000 For 1 Micron 100000 00 For 10 Micron Resolution 1 2 5 10 20 50 Micron Display t 7 digit 0 56 inch Quantization error 1 digit NEWALL Front panel Numeric keys The M20 DRO has a user friendly keyboard with positive touch keys The to 9 keyboard is a silicon type The keyboard panel houses the common indications for all axes namely INCH MM ABS INC A separate set of indications for diametric mode are provided for each axis when indication is disabled it is in radial mode The display consists of three rows of 7 e Decimal point numeric key segment LED displays The r
16. he DRO calculates the actual offsets for different tools as follows At point Q the DRO shows the reading as 15 5 The desired reading at point Q is 10 5 This means that the actual offset values are X 10 15 25 Y 5 5 10 NEWALL At point R the normal DRO reading is 25 10 but because of the offset values the DRO shows it as 0 0 once you have implemented the tool offset The DRO calculates the actual offset values for all tools as described above To implement the tool offset 1 Press the TOOLS key The display shows the current reading plus the actual tool offset 2 Use the UP and DOWN arrow keys to find the tool that you want 3 Enter the tool number that you want to implement 4 Press the ENTER key You can press the C key at any time to return to normal counting mode Notes and cautions You must ensure that the Home Zero position is the same while editing and implementing The values that you can enter are dependent on the counting direction For the shown example if the counting directions are reversed the desired value at point Q must be entered as 10 5 to make point R 0 0 You can program up to 4 tools If you enter a tool no greater than 4 then the message invalid is shown You must press the C key to clear this If you are scrolling through the tool numbers with the LEFT and RIGHT arrow keys then after 4 the number rolls back to 1 You mus
17. matically and stores the new value 1 Press the ENTER key when the DRO shows the message DISPVAL 2 Position the machine at a datum point Zero the axis being calibrated by pressing the X or Y key 4 Move machine to the other end of slip gauge or measuring standard Take no notice of the actual reading on the display 5 Press the LEFT or RIGHT arrow key The display shows 0 Enter the slip value in Microns 6 Press the ENTER key CALFAC is displayed NEWALL 7 When you press the ENTER key again the Calibration Factor is displayed It is Calibration Factor microns pulse Length of Slip gauge in microns Value counted by DRO You can edit the Calibration Factor by pressing the LEFT and RIGHT arrow keys You can edit it up to 6 digit decimal places If you press the ENTER key then you can bypass the editing stage You may need to edit the Calibration Factor to fine tune it if small errors are found during production If the counter display reads longer than it should then you should reduce the value of the Calibration Factor If it reads shorter then increase the value Setting the keyboard lock During machining if you accidently reset any one of the axes then the current work piece may be damage To avoid this you can use the keyboard lock facility There are two possible options LOC ON If you select this mode in Engineering mode then keyboard entry is disabled LOC OFF
18. mental value is reset This is now the new incremental reference of the DRO If in Incremental mode you want to reset the incremental reference for any axis you can press the particular axis key in Incremental mode In this case the Absolute value remains unaltered and the incremental value is Zero The feature toggles all the axes simultaneously The incremental reference is a temporary reference When you power off the DRO this reference becomes zero Rad Dia mode You use this feature to display the measurement value in the required measurement mode i e Radial or Diametric It is particularly useful for lathe cross axis You select the required mode in the engineering parameter setting In this mode you can toggle the display between unit value display and double value display for the selected axis A corresponding LED indication is given near the front panel display for the respective axis The diagram below shows a cylindrical work piece with centre C If the DRO is reset at C and T indicates the tool position then A is the displayed distance in Radial mode In Diametric mode with the same tool position the displayed distance would be equal to B which is twice that of A 3 2 Inch MM mode You use this function to convert a display value from metric to imperial units of measurement It toggles between the two modes for all the axes simultaneously The corresponding LED indication is given near the front panel display In
19. n 1 Press the REF key 2 Select HOME 3 Select the required axis The last digit on the selected axis starts blinking The DRO is waiting for an ABS pulse input from the transducer 4 Move the transducer slide to sense the ABS pulse The ABS pulse is sensed The DRO changes to normal counting mode with the zero position set at the ABS position NEWALL Machine reference function This function is analogous to the Home function except that at the Reference Mark on the transducer the Home function sets the display to zero while Machine Reference function inserts the value that you saved as the Machine Reference The Machine Reference value is the distance of thet Job Zero from the Home Zero i e the ABS mark on the transducer The following diagram shows how to find and store the Machine Reference Cl LL B lt A C D zero If the tool is at position C then A D is the job length and B is the nearest point outside the job at which transducer gives an ABS pulse In this case setting the machine reference makes the count zero at A 1 Move the slide i e the tool near to position A preferably between A and B 2 Execute the Home function see Home function on page 3 3 and move the slide towards B as indicated by the arrow As the ABS pulse is encountered at B the display shows zero 4 Move the slide to A The displayed value is the distance between the job edge and its nearest
20. ob is complete the display shows the coordinates of the first hole You can press the C key at any time to bring the DRO back to normal counting mode NEWALL Angular bolt hole function You use this function to create a table of coordinates of holes on an arc i e part of a circle rather than a full circle You enter the geometrical data from the drawing circle centre coordinates starting angle ending angle radius and number of holes to drill The DRO automatically generates the required coordinates for each hole The DRO shows the distance between the current tool position and the hole To achieve the desired hole position move the slide so that the DRO down counts to zero If you enter a number greater than 10 for the number of holes then the message invalid is shown You must then press the C key It is assumed that holes are equally spaced on the circle To set up an angular bolt hole Press the PCD key Select ANGHOLE Press the ENTER key Enter the X coordinate for the centre of the circle Enter the Y coordinate for the centre of the circle Enter the radius of the circle Enter the starting angle for the first hole Enter the ending angle for the last hole ee DI aS KO PO ST Enter the number of holes maximum 10 As the machine works the holes the display shows the number of the hole that the machine is drilling and the distance to the next hole When the job is complete the displa
21. or 2 4 Connector types 1 1 D Dimensions 1 1 Display 1 1 F Fuse rating 1 1 H Home zero 3 4 4 4 4 5 Incremental mode 1 3 Invalid Lock Code 2 1 J Job zero 3 4 3 5 M Mains supply 1 1 Maximum count 1 1 X 1 O Operating temperature 1 1 p Power consumption 1 1 Q Quantization error 1 1 R Relative humidity 1 1 Resolution 1 1 S SDM learn mode 4 3 SDM program mode 4 2 SDM run 4 3 Software lock 2 1 T Transducer input 1 1 V Valid Lock Code 2 1 W Weight 1 1 NEWALL a company of Sch g Electric HEAD OFFICE Newall Measurement Systems Ltd Custom Sensors amp Technologies Technology Gateway Cornwall Road South Wigston Leicester LE18 4XH United Kingdom Telephone 44 0 116 264 2730 Facsimile 44 0 116 264 2731 Email sales newall co uk Newall Electronics Inc Custom Sensors amp Technologies 1778 Dividend Drive Columbus OH 43228 USA Telephone 1 614 771 0213 Toll Free 800 229 4376 Facsimile 1 614 771 0219 Email sales newall com Web www newall com 023 80500 UK 1
22. ows indicate the X and Y axes The display To confirm entry indicates a negative sign when the value is negative and blank if the value ENTER Cc is positive Invokes the tool offset function Cancel entry key Terminates the existing function or mode Stores count value as the Machine Reference and invokes the Home function Invokes the SDM programming function Invokes the calculator function Selects the positive or negative sign when you enter Keys y T values using the keyboard Set the X axis Selects the X axis for the function P CD Invokes the Bolt Hole function Set the Y axis Selects the Y axis for the function T NEWALL lt pi gt gJ o z Ol O L lt pat a I2 Jem A C Selects Absolute or Incremental mode Selects Imperial or Metric mode Invokes the half function Invokes the Exit Sleep mode or DRO setting up mode Numeric 4 Left Arrow key Numeric 6 Right Arrow key Numeric 8 Up Arrow key Numeric 2 Down Arrow key LCD indications The following table explains what the LEDs mean when they are lit up INCH MM ABS INC DIA LED Indicates that the DRO is counting in inches Indicates that the DRO is counting in millimeters Indicates that the DRO is in Absolute mode so it is counting the absolute travel from the set origin Indicates that the DRO is in Incremental mode so it is counting the incremental travel from the set point These LEDs
23. r mode e Press the C key to clear the X axis display to 0 to start a new calculation as if calculator mode had just been entered e Enter a new number as the start of a new calculation When you enter the number it automatically clears the existing calculation result and the new numbers appear in the X axis window The Y axis window is blank e With the result displayed in the X axis window you can press the Y axis key to select a mathematical function Here the value in the X axis window from the previous calculation is used as the first number in the new calculation Example 2 To perform the calculation 43 5 10 2 x 9 299 7 1 Press the CALC key to enter the calculation function 2 Press the keys 4 3 5 NEWALL 4 7 Press the Y axis key until Sub appears on the display Press the keys 1 0 2 Press the Y axis key This completes the calculationa dn the result is shown in the X axis window Press the Y axis key until Multi appears on the display Press the 9 key Press the ENTER key to complete the calculation The result is shown in the X axis window Press the CALC key to exit the calculator function NEWALL This chapter describes the M20 s special features Selectable counting direction This feature allows counting in either the left or right direction See Setting the counting direction on page 2 3 for further details Floating negative sign
24. ress ENTER to select the required counting direction Setting the calibration The distance traveled by an encoder may differ from the actual travel This error can occur due to machine wear and tear misalignment of the scale and other factors This error can be linear or non linear Calibration factor DRO is calibrated for both resolution of the transducer and machine error by a common factor called the calibration factor After traveling a known distance using a slip gauge the DRO should display the value equal to length of slip gauge The value counted by the DRO may differ from the actual distance if the DRO is not calibrated for scale resolution and machine error 2 3 Machine error There may be some degree of error or inaccuracy in the machine due to at least one of the following e Gravity causes deflection in machine tool structure e The fit between mating surface is loose e Driving or cutting forces cause deflection e Distortion of machine geometry due to temperature gradient These errors can cause inaccuracies in the readings of the DRO even though the scales and the DRO counter are accurate Also this error is different in different parts of the machine table You can compensate for a linear error in the DRO by multiplying the actual DRO actual readings by an error correction factor Calibration process There is no need to delete the existing Calibration Factor calibrating the DRO counter does that auto
25. s easily found You can program a maximum of 20 SDM values SDM no 1 is always absolute If you enter an SDM step number greater than 20 then the display shows the message invalid You must press the C key to clear this Tool offset function An example of this function is shown in the following diagram Counting directions Surface A T Tool 5 00 H Z P 15 ome Zero Point P is the Home Zero position on the machine At point Q tool no 1 shows readings as 15 5 At the same point Q tool no 2 does not show the same reading because of the offset of the cutting edge of the second 4 4 tool with respect to the first tool With the tool offset function you can make the DRO display the same values when the cutting edges of different tools touch the same point on a work piece Entering tool offset values 1 Execute the Home function for both axes and establish the Home Zero position 2 Touch the tool to surface A of the job Select the tool offset function and enter the value for the X axis 10 000 in the example shown above 4 Press the C key to return to Normal counting mode Touch the tool to surface B of the job Select the tool offset function and enter the required value for the Y axis 5 000 in the example shown above 7 Press the C key You can repeat the sequence from step 2 for all tools and enter the required values Implementing the tool offset Using the example t
26. sson 8528000 no i000 mo 5000 re F resso nas 10000 me ox me 20000 You can program up to 20 SDM values in this way 4 3 Learn In this mode you don t use the numeric keypad for programming the SDM values Instead the current tool position is considered as the SDM value This mode is advantageous for large programs Using the same example as Program mode you program the points as follows 1 Reset the X and Y axes at point A 2 Bring the tool to point B 3 Ensure that Absolute mode is ON The display shows X 10 000 Y 10 000 Press the ENTER key to store the value Bring the tool to point C The display shows X 10 000 Y 30 000 6 Press the ENTER key to store the value You can program up to 20 SDM values in this way Run You use the Run option to recall the stored SDM values to run the same type of Job Example 1 Press the SDM key 2 Select RUN 3 Press 1 to recall SDM no 1 The display shows the distance from the current tool position to the NEWALL programmed SDM position The second decimal point at the seventh digit indicates that the DRO is in Preset mode 4 Move the tool to make displays zero The tool has reached the position of SDM 1 You can recall all the SDMs using this procedure You must ensure that the zero position for all the axes while programming and recalling is the same We recommend that the zero position is the Home Zero position since it i
27. t ensure that parameters such as RAD DIA INCH MM and CAL FAC are the same while programming and recalling 4 5 Calculator function You use this feature to perform the following calculator operations This means that you can perform simple on line calculations while machining e Add e Subtract e Multiply e Divide e Sine e Cosine e Tangent e Sine Inverse e Cosine Inverse e Tangent Inverse Display and key modes The X axis displays the number that you entered and the calculated result The Y axis is where you select the mathematical function to be performed Press the ENTER key to calculate the result of the current sum Press the C key to delete an entered number back to 0 if you have not pressed the Y axis key You use the number keys 0 9 to enter values The l key is yet to be implemented The decimal point key is yet to be implemented NEWALL Operation The basic operation is the same as a typical simple personal calculator The X axis represents the display of the calculator As the DRO does not have keys available for the mathematical operators these are expressed in the Y axis window 1 Toenter calculator mode press the CALC key The X axis shows 0 The Y axis is blank no display 2 You can enter a number using the 0 9 and keys This number is shown on the X axis If you make a mistake you can press the C key to delete the entered numbers one at a tim
28. ther measurement unit by pressing the INCH MM key is disabled INCH MM indicates that on line conversion to other measurement unit by pressing the INCH MM key is enabled and the DRO can switch between INCH or MM mode In this case the measurement mode at power on is same as the mode at power off e g if the DRO is turned off in INCH mode at power on it will still be in INCH mode Setting the measurement mode You can select RAD or DIA RAD indicates radial measurement Counts of the axis are shown in RAD only when you select this option DIA indicates diametric measurement Counts of the axis are shown in DIA only when you select this option NEWALL To select the measurement units 1 Use the LEFT and RIGHT arrow keys to highlight the options 2 Press ENTER to select the required measurement units Once you have selected the measurement mode the DRO remains in this mode permanently In this case measurement mode at power on is same as the mode at power off e g if the DRO is turned off in DIA mode at power on it will still be in DIA mode This mode is selected in Engineering mode only Setting the counting direction Here you select which direction of the slider movement will count as positive linear displacement You can toggle between the left and right options by pressing LEFT and RIGHT arrow keys To select the counting direction 1 Use the LEFT and RIGHT arrow keys to highlight the options 2 P
29. ting Direction Calibration Factor Keyboard Lock Beep Default Setting Inch MM Rad Left 1 0 OFF ON When you have set all the paramters in Engineering mode press the ENTER key to go to normal counting mode 2 5 NEWALL This chapter describes the M20 s basic functions Reset function During machining and setting operations you often need to bring the origin to a particular point With this feature you can redefine your origin at any desirable location For example to reference all relevant points on a work piece from a particular point such as the center of the work piece or a corner of the work piece To redefine your origin 1 Select the axis that you want to reset 2 Bring the tool to the reference point 3 Enter 0 000 to reset the axis This point is then used as the reference origin for all the relevant points on the work piece When the axis X or Y is in Linear mode the display becomes 0 000 in MM mode 0 0000 in Inch mode Setting a new origin deletes the existing origin Setting a value You use this feature to set any value within range to any position on the axis in Absolute mode For example to set a particular value to a corner or center of the work piece To set a value 1 Bring the tool to desired point 2 Select the X or Y axis 3 Enter the value and press the ENTER key 3 1 This new value is now shown for this position and a new origin is also set Se
30. tting a new value to a position deletes the existing origin Setting a new value to zero for all axes sets the new origin at the current position Once you have pressed the decimal point key you cannot enter an integer value Smart numeric entry The position of decimal point depends upon the setting you selected for the Display Resolution parameter in Engineering mode For example if you set the Display Resolution to 1 0 in Engineering mode then if you enter the value 5678 the integral part changes to 5678000 However if after 4 digits you do not press the decimal point key and you press another numeric key say 9 the display changes to 6789000 If you keep pressing numeric keys then the display keeps rolling over until you press the ENTER key or the decimal point key When you press the decimal point key you can edit the fractional part of the value Like the integral value this is also a rolling type entry until you press the ENTER key Abs Inc mode ABS is Absolute mode Here the reference is taken from a common point when measuring a distance INC is Incremental mode Here the reference is taken the first time that you press the ABS INC key 1 Power on the DRO 2 Press the ABS INC key The Incremental value is set to zero This is now the incremental reference datum of the DRO NEWALL If you reset the Absolute value then the first time that you press the ABS INC key after the reset the incre
31. y shows the coordinates of the first hole You can press the C key at any time to bring the DRO back to normal counting mode 4 2 SDM function The SDM function is mainly applicable for mass production In this function you store the coordinates of different tool positions on machine permanently in the memory You can then recall these stored coordinates for doing the same type of job Programming the positions There are two ways by which you can program the SDM values Program and Learn Program In this mode you manually enter the coordinates of the position using the numeric keyboard If the DRO is in ABS mode then the value that you enter is considered as an Absolute value from the zero position If the DRO is in INC mode the value that you enter is considered as an incremental distance from the previous SDM value To program SDM values Press the SDM key Select PROGRAM Press the ENTER key Enter the step number Press the RIGHT arrow key to go to the next step 1 2 3 4 5 Enter the coordinates for that point 6 7 Enter the coordinates for that point 8 Repeat steps 6 and 7 until you have entered all the SDM values NEWALL Example The following diagram shows an example 30 15 40 In the above diagram A B C D E and F are the points to be drilled You would program these as follows aw saro nano Mia pa 2 e reso a0 10000 me 1000 f e re
Download Pdf Manuals
Related Search