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Micromat MM 470A Operator's Manual

Pcb drilling system manual tool change - air
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MICROMAT
PCB DRILLING SYSTEM

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Summary of Contents for Micromat MM 470A

  • Page 1 MICROMAT PCB DRILLING SYSTEM...
  • Page 2 INTRODUCTION The Micromat has been designed to enable the drilling and routing of printed circuit boards to be carried out quickly and efficiently by non-technical personnel. The machine is first taught the pattern of holes to be drilled and from then on the same pattern can be drilled as many times as required until the machine is re-programmed.

  • Page 3: Installation

    Compressed air must be clean and dry and regulated to not more than 80 p.s.i. (5.5 bar) Although the Micromat will operate under a wide variety of conditions, the machine must not be subjected to extremes of temperature as this will obviously affect its accuracy.

  • Page 4: Routine Servicing

    ROUTINE SERVICING The only basic attention required by the Micromat is that it is kept clean and free from dust and grease. The swarf extraction unit should be emptied at least daily and the filter bags well shaken to avoid dust clogging and subsequent overheating and destruction of the motor. The motor brushes should be inspected monthly and replaced if required.

  • Page 5: Prog (Program)

    Section CONTROL SWITCHES AND FUNCTIONS RESET (momentary action) Places the control system in an idle mode waiting for a command from one of the following switches:- M/EXP, HOME, PROG and RUN. DRILL or M/EXP (momentary action) If the system is in the PROG mode, then the MOVE or EXPAND routine will be operated. (See also Section 11).
  • Page 6 Section JOY-STICK This is used to move the TV target to the position on the circuit board to be drilled or routed. It should always be moved away from any illuminated INCR buttons to avoid driving the table to its limit position. If this should happen, HOME must be pressed to enable further movement.
  • Page 7 This command must be entered at the end of a program to signify that no further instructions are entered. If omitted, the Micromat will continue past any programmed information and pull from its memory old data which may destroy the pattern which has already been drilled.
  • Page 8 Use only top grade C30 computer type data cassettes. Do not use C60, C90 or C120 audio cassettes. X Y SWAP If the X and Y values need to be exchanged to fit the program on to the Micromat table: 1) Press RESET.

  • Page 9: Routing Commands

    Section ROUTING COMMANDS DOWN (momentary action) This button enters the position at which the routing cutter is to be fed into the circuit board along with the setting of the TOOL SWITCH. If followed immediately by an UP command the cutter will be fed into the board and then withdrawn, making a single hole the same diameter as the cutter.
  • Page 10 Section CIRCULAR ROUTING CTR CCW (CTR) (momentary action) CTR CW (RAD) (momentary action) The CTRCW (Centre Clockwise) and CTRCCW (Centre Counterclockwise) commands are used to program the centre point of circles or part circles whose radii must not be greater than 325.00 mm.
  • Page 11 Section ROUTING NOTES An allowance must be made for the cutter diameter in all routing programs. The INCR function can be used for cutter offset if a value of half the cutter diameter is selected but will, of course, only be fully effective if used parallel to the axes of the machine. For best results with the 125 watt spindle, use a 1.6 mm dia.
  • Page 12 Section LINEAR ROUTING EXAMPLES Position No Command DOWN DOWN DOWN DOWN DOWN Note that there are three commands at position 5. Positions 1 to 11 are programmed sequentially with DOWN commands at each point. Position 12 is then programmed with 3 commands:- DOWN, UP and END. Note that points 6 and 8 are in the same position.
  • Page 13 Section CIRCULAR ROUTING EXAMPLES OUTSIDE CIRCLE Position 1 is programmed with a DOWN command, position 2 with a CTRCW command and then position 1 again with a DOWN and an UP command at the same position. INSIDE CIRCLE As above but position 2 is programmed with CTR CCW 90 DEGREE ARC Position...
  • Page 14 Section DRILL CHANGE AND DEPTH SETTING MANUAL TOOL CHANGE SPINDLES TYPE 4025, 4026 AND 4032. 1) Drive mechanics to HOME position and remove TV camera. 2) Unplug the spindle cable and carefully remove the spindle after loosening the two retaining screws. 3) Position a piece of 0.8 mm laminate under the pressure foot.
  • Page 15 Section TV TARGET ALIGNMENT 1/ Allow 30 minutes TV warm up time. 2/ Press PROG and allow the machine to travel to its HOME position. 3/ Pin a piece of unclad laminate and backup material to the drilling bed. 4/ Using the joy-stick, (see Section 1), position the TV target over the laminate and enter six holes by holding down one of the INCR buttons for six bleeps, ensuring that the target is still over the laminate, and then press END.
  • Page 16 Section HOW TO ENTER A PROGRAM In order to fully understand the operation of the Micromat, it is strongly advised that these instructions are followed step by step until the procedures become second nature to the operator. The basic controls will be dealt with first, and after becoming fully conversant with these the operator should progress to the section covering RPT, BRACKET, SIL, MOVE, EXPAND and ASCOPP commands.

  • Page 17: Operator Action

    Bleep... . target and pressing HOLE until the last position has been entered. 6) Press END once. Bleep. The Micromat is now programmed to drill the hole pattern which has just been entered.
  • Page 18 Section The program should be checked for accuracy BEFORE DRILLING as follows:- 7) Press BST once quickly. a) End light will come on. b) The bleeper will sound continuous bleeps. c) The target will not move. 8) Press BST once quickly a) The END light will go off.

  • Page 19: Practice Makes Perfect

    Section DELETE Unwanted commands can be removed from the program be pressing DEL (DELETE) immediately after the unwanted position has been reached with BST and SST. The information is deleted from the program when the DEL button is released. This action is indicated by a long bleep and the TV target will move forward through the program to the next position.
  • Page 20 Section DRILLING THE PATTERN The Micromat is able to drill the pattern of holes as follows:- 1) Release the PROG switch. 2) Press HOME. 3) Remove TV camera. 4) Replace the artwork with blank laminate and backup material pinned to the tool strips.
  • Page 21 Section SAVING PROGRAMS ON TAPE 1) Press PROG and allow table to go HOME. 2) Fully rewind tape. 3) Put tape machine into RECORD mode by pressing RECORD and PLAY together. 4) Press SAVE within 1 second of pressing RECORD/PLAY. 5) The SAVE light will come on and, after a 20 second delay to allow for any leader on the tape, will flash to indicate that the program is being recorded onto tape.
  • Page 22 Section LOADING PROGRAMS FROM TAPE 1) Press PROG and allow table to go HOME. 2) Fully rewind tape. 3) Press PLAY on tape machine. 4) Press LOAD within 1 second of pressing PLAY. For a TEST LOAD, the PROG switch should be released at this point. The machine will check the tape, and if faulty, the ERROR light and bleeper will come on and the tape will stop.

  • Page 23: Alternate Method

    Section CASSETTE PROGRAM CONCATENATION Cassette programs may be concatenated (joined together) as follows:- 1) Press PROG "ON". 2) Load the first program from cassette as normal. 3) Use only the LOAD button to enter and exit the cassette load operation. **** DO NOT PRESS RESET **** 4) Press HOLD "ON"...
  • Page 24 Section PAPER TAPE OPTION A serial paper tape reader/punch may be connected to the Micromat RS232 interface. PAPER TAPE READER The paper tape reader is accessed through the LOAD function of the keyboard. By pressing the LOAD button for at least one second the paper tape reader will be activated.
  • Page 25 Another possibility is that the paper tape is being fed in backwards. Many paper tapes have machine specific codes on them. The Micromat attempts to ignore any codes that it is not programmed to accept. Occasionally this will produce spurious values in memory, usually at the beginning of the program.
  • Page 26 The tool switch is used to set the required punched tape format. (see below) To cover as wide a range of machines as possible, the Micromat uses a very simple format that most equipment is capable of receiving.
  • Page 27 In most interconnection hook ups a straight pin to pin cable will suffice. To connect to another Micromat a swap-over cable is required with pins 2 and 3; and pins 4 and 5 swapped and pin 7 connected to pin 7.
  • Page 28 2400 4800 9600 MM-TALK SOFTWARE The left hand digit should be set to "9" when using the interface with a personal computer running "MM-TALK 2.2" software. e.g. TOOL switch to "9" (Micromat format) SIL switch to "99" (MM-TALK, 9600 baud)

  • Page 29: Host Computer

    Section RS 232 CONNECTIONS RS232 signals are available on the miniature 25 way "D" connector, signal functions and directions as listed are with respect to the Micromat interface. Pin No Name Interface Function Direction Ground (OV) Received Data input Transmitted Data...
  • Page 30 Section REPEAT PATTERNS The RPT (REPEAT) command is used for step and repeat programs where more than one identical circuit pattern is to be drilled on one large panel. First, identify the first hole to be drilled on each circuit and program each of these using the RPT button.
  • Page 31 1, followed by 2, etc., With the Micromat, tool numbers can be entered in any order and in any combination of sizes, the only exception being that OPEN and CLOSE bracket commands and the HOLEs entered within those brackets should normally all be programmed with the same tool number.
  • Page 32 Section RUN AND THE TOOL SWITCH If the machine is an Auto Tool Change type and the TOOL SWITCH is set to 0 (zero) when RUN is pressed, Auto Tool Change operation will begin and ALL the holes will be drilled, starting with tool number 1, or the lowest allocated tool number, and finishing with the highest allocated tool number.
  • Page 33 Section PROG/RUN - RUN/PROG RUN AND PROG modes can be started at points other than the very beginning of programs (i.e. command 1) provided they are initiated while the other mode is operative. PROG/RUN Assume SST and BST have been used to reach a specific hole in the program. (The PROG switch will be on at this time).
  • Page 34 Section SEARCH The SST function may also be used to SEARCH for a previously programmed position. The normal sequential action of SST, as previously described, will operate if the position of the table is not altered by use of the joy-stick or INCR buttons between presses of SST. If, after having been reached a position under SST or BST control, the table is moved with either the joy-stick or any of the INCR buttons, the next depression of SST will not drive to the next sequentially programmed position but will SEARCH for the nearest programmed...
  • Page 35 Section SINGLE-IN-LINE FACILITY ( SIL ) The SIL feature allows rows of up to 99 holes to be accurately and equally pitched over any required distance. Full linear interpolation exists within the operating software so that the row of holes may be pitched in any direction on the machine's table and not just parallel to the X and Y axis.
  • Page 36 PROGRAM MOVE AND EXPAND These functions are helpful to the programmer in that they allow patterns to be moved around the drilling bed of the Micromat and to be re-positioned to make the best use of laminate blanks. The MOVE routine simply re-positions a drilling or routing pattern, complete with any RPT or bracket commands.

  • Page 37: Program Move

    Section PROGRAM MOVE MOVING A COMPLETE PROGRAM 1) Switch PROG on and load the drill program. 2) SST or BST to the very first command in the program. 3) Ensure that the TOOL SWITCH is NOT set to 9. 4) Use the joy-stick to place the TV target over the new position for the first command. (The first command will be re-positioned here, with everything else relative to it.) 5) Press M/EXP and wait until the bleep finishes.
  • Page 38 With the Micromat in the PROG mode and the TOOL SWITCH set to 9 (nine), a single press of the M/EXP button will display the number of commands used in the original program on the upper part of the DRO, and the number of commands required in the expanded version of the program on the lower display.
  • Page 39 A situation can arise, where, due to the number of RPT and bracket commands used, the Micromat will believe it has enough memory to do the expansion when in fact it has not. In this case the conversion will begin but as soon as the computer reaches the end of its usable memory the routine will stop and this will be indicated by the error light coming on and the bleeper sounding.
  • Page 40 "ASCOPP" may also be used on conventional etched panels. In line with the basic philosophy behind the Micromat system, "ASCOPP" is extremely simple to use, in fact only two extra switches are used by the operator. These are located above the main control panel.
  • Page 41 With the PROG switch ON and the target stepped to the first hole position, selecting "A" and setting the ASCOPP switch to ON will cause the Micromat to step through each set of co-ordinates in the same order as originally programmed, re-centre the TV target on the new pad pip position and store the new co-ordinates in the control systems memory along with any previously entered tool size information.

  • Page 42: Initial Setting

    Section INITIAL SETTING 1) Position some black/white artwork securely on the table, switch PROG on and drive the TV target to one of the pad pips. 2) Switch the "ASCOPP" function switch to "M" and the control switch to "ON" and ensure that the small square to the lower left of the target comes on when the pad pip is within the inner target ring.

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