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HAMAR LASER L-702 Operation Manual

And multi-turn alignment system
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Summary of Contents for HAMAR LASER L-702

  • Page 2 WARRANTY Hamar Laser Instruments, Inc., warrants each instrument and other articles of equipment manufactured by it to be free from defects in materials and workmanship under normal use and service, its obligation under this warranty being limited to making good at its factory any instrument and other article of...

  • Page 3: Table Of Contents

    Installing the (RS-232) USB to Serial Converter Cable Driver ..............9 Connecting to the R-358 Computer Interface ..................10 Qualifying the L-702 Laser Beam to its Mounting Stud ................. 11 Qualifying the L-702 Laser Beam to a Spindle AOR ................. 12 The NORMIN Method ..........................

  • Page 4: L-702/L-702Sp Spindle And Multi-Turn Alignment System

    L-702/L-702SP Spindle and Multi-Turn Alignment System The L-702/L-702SP 4-Axis Spindle & Multi-Turn Machine Alignment System is a complete alignment system for aligning spindles on lathes, turning centers and multi-turn machines. There are two configurations: • L-702 – This version is used only to...

  • Page 5: Hardware Overview

    Vertical and horizontal angular controls allow the user to fine-adjust the laser angle to the spindle’s precise axis of rotation. The L-702 is designed for applications where the distance between target and laser is approximately 100 ft.

  • Page 6: Laser Control Panel And Functions

    See Switching L-702SP Turret into Scan Mode on Page 19 for instructions. A/C Connector The L-702 comes with a rechargeable battery. The connector is shown below. Figure 3– L-702/L-702SP Control Panel Pitch/Roll Adjustment Knob The adjustment knobs use differential micrometers, allowing both coarse and fine functions.

  • Page 7: L-702/L-702Sp Laser Dimensions

    L-702/L-702SP Laser Dimensions...

  • Page 8: The T-261A Four-Axis Target

    HLI-supplied calibration factors into Lathe 9, before use. An alignment\calibration fixture and a target stand, available from Hamar Laser, are required for calibration. The procedure is outlined in Appendix C, beginning on Page 31.

  • Page 9: Interpreting The Plus And Minus Signs In The Live Displays

    Interpreting the Plus and Minus Signs in the Live Displays The signs of the data displays indicate the position (high/low or left/right) of the target is relative to the laser beam. See the interpretation below. Note the T-261 provide 4 simultaneous axes: •...

  • Page 10: Preparing For An Alignment

    In lathe alignment, the L-702/L-702SP is mounted in the headstock spindle and aligned to the AOR. The T-261 Target is then mounted in the tailstock chuck or in a fixture on the saddle, and then the straightness and flatness of the guideways is measured relative to the L-702/L-702SP laser.

  • Page 11: Qualifying Lasers And Target Calibration

    Qualifying Lasers and Target Calibration In the case of the L-702 Laser, the laser beam needs to be parallel to the axis of its mounting stud, providing the maximum amount of adjustment range. This is done by aligning the L-702 Base cover with the thin white line on the L-702’s mounting base (see Qualifying the L-702 Laser Beam to its Mounting Stud on Page 11).

  • Page 12: Installing The (Rs-232) Usb To Serial Converter Cable Driver

    Installing the (RS-232) USB to Serial Converter Cable Driver This driver is required for the R-358 Transceiver and to communicate with targets via the computer USB port. The driver creates a virtual COM Port that is recognized by the applications as a standard serial port. Note: You must pre-install this driver prior to connecting the device(s) to the computer through the USB port.

  • Page 13: Connecting To The R-358 Computer Interface

    Connecting to the R-358 Computer Interface The R-358 Computer Interface connects the T-261 Target to a computer for automatic downloading of the target data into Lathe9 or other HLI software. This enables the software to offer real-time data displays, perform calculations, and plot results.

  • Page 14: Qualifying The L-702 Laser Beam To Its Mounting Stud

    Pitch and Roll COARSE adjustment axes Figure 11—Returning the L-702 Pitch/Roll Adjustments to the middle of their range so that the bottom of the L-702 base cover is aligned to the white line on the mounting...

  • Page 15: Qualifying The L-702 Laser Beam To A Spindle Aor

    Qualifying the L-702 Laser Beam to a Spindle AOR In spindle alignments on lathes and turning centers, it is important to ensure that the L-702 laser beam is aligned, or qualified, to the axis of rotation (AOR) of the spindle. This is so the alignment of the headstock to the machine’s guideways can be checked.

  • Page 16: Adjustments

    12-times finer adjustment resolution. Hardware Requirements To qualify the L-702 to the spindle’s AOR you will also need the L-702 Laser, T- 261 Four-Axis Target, the R-358 Computer Interface and Lathe9 or Spindle8. If using the manual procedure, then you will need two R-1307 readouts, one for the center readings and one for the angular readings.

  • Page 17: Spindle Qualifying Procedure Using Lathe9 Software

    Spindle Qualifying Laser Procedure Using Lathe9 Software The following procedure explains how to qualify (align) the L-702 laser to the spindle’s rotation axis using a 4-axis target and Lathe9 software. Setup 1. Connect the T-261 Target to the R-358 Computer Interface.
  • Page 18 5. Go to Step 2: Qualify Laser Go to Step 2: Qualify Laser and ensure you are getting readings in all four displays. 6. Rotate the spindle/L-702 to the INverted Position. Rotate the spindle/L-702 to the INverted position (A/C connector panel is facing toward you), with the target in the NORMal (cable down) position.
  • Page 19 Turn the Pitch and Roll adjustment knobs until the Slope values in the Step 2 display are within ±.0001 in/ft (0.012 mm/m) of zero. Here are the L-702 V and H Angular (Slope) values in or close to tolerance. Note: There are no center adjustments with the L-702 since any small centering errors, will be averaged-out by using the NORMIN procedure in Step 5.
  • Page 20 12. See the Lathe9 Manual for information on how to check straightness of the lathe bed guideways and parallelism of the headstock to the guideways.

  • Page 21: Measuring Cross-Slide Squareness And Straightness With L-702Sp

    Measuring Cross-Slide Squareness and Straightness with L-702SP With the L-702SP Laser, a rotating turret is added to the L-702 Laser to create a scanning laser plane that is perpendicular to the laser beam to 1 arc second (.00006 in/ft or 0.005 mm/m). The L-702SP scanning laser plane is flat to 0.5 arc seconds (.00003 in/ft or 0.0025 mm/m) and can measure straightness and squareness of a cross-slide axis or of a multi-...

  • Page 22: Switching L-702Sp Turret To Scan Mode

    Switching L-702SP Turret to Scan Mode To create the L-702SP perpendicular laser scan plane a flip mechanism is used to move a pentaprism into the laser beam that bends the beam 90 degrees. This creates a perpendicular laser beam that emits from the side of the spindle, which is then rotated to create the scanning laser plane.

  • Page 23: Procedure To Measure Cross-Slide Squareness/Straightness

    Procedure to Measure Cross-Slide Squareness/Straightness Align L-702SP Beam to Spindle Rotation Axis. As shown in Qualifying L-702 Laser on Page 11, align the L-702SP laser beam to the spindle rotation axis. Flip prism in turret to Scan Mode (see Page 19).
  • Page 24 4. Move the Cross Slide Axis and Take Measurements Move the cross slide axis a short distance and note the value on the readout. Write down the readings and the distance traveled. Any deviations from zero are a measure of squareness but also straightness.

  • Page 25: Procedure To Measure Multi-Turn Machines For Squareness And Straightness

    Procedure to Measure Multi-Turn Machines for Squareness and Straightness 1. Align L-702SP Beam to Spindle Rotation Axis. As shown in Qualifying L-702 Laser on Page 11, align the L-702SP laser beam to the spindle rotation axis. Flip the prism in the turret to Scan Mode (see Page 19).
  • Page 26 3. Turn on Scan Plane, Connect the Readout and Zero the Target Turn on the scan plane. Connect the R-1308 Readout or turn on the R-1356-2.4ZB PDA Readout and open Read15. Zero the target. 4. Take Measurements for the X Axis (in C) Move the X down a short distance and note the value on the readout.
  • Page 27 6. To Measure the Z Axis for Straightness and Parallelism to C Move the machining spindle to be on center to the headstock centerline. Install the T-261 4-Axis Target into the machining spindle. Move the machining spindle until the T-261 is close to the L-702SP within 4 in.
  • Page 28 7. Lathe9 Step 3 and Results Screen...

  • Page 29: Appendix A - The Normin Method (Bore And Spindle)

    Appendix A – The NORMIN Method (Bore and Spindle) The NORMIN method was developed by Hamar Laser Instruments as a way of compensating for laser or target mounting errors in bore or spindle work. The word is a contraction of “NORMal-INverted,” which briefly describes the method.
  • Page 30 The readout always shows the displacement between the Target Center and the Laser Beam Center. When the Target Center is not on the True Bore Center, the numbers and the signs on the readout will change when the target is rotated because the Target Center is moved to a different location in relationship to the laser beam.

  • Page 31: Appendix B - Qualifying The Laser

    A laser that has been qualified for a particular application may need to be re-adjusted for another. The following procedure is used to qualify the L-702 laser to a desired axis.

  • Page 32: Adjustments

    Hardware Requirements The common equipment required to perform a qualifying procedure would be a target, an L-702 laser, and the spindle or fixture to hold the laser and target. To measure both the angle and center, a two-axis target with an angle module (the T- 212) or a four-axis simultaneous target (such as the T-261A) is required.

  • Page 33: Adjusting The Laser Angle

    Adjusting the Laser Angle 1. INvert the laser with the target in the NORMal position. Set the laser in the Inverted (cable up) position, with the target in the NORMal (cable down) position and wait for the readings to stabilize (approx. 10 seconds). Write down the angular INverted reading. 2.

  • Page 34: Appendix C - Target Calibration

    1. Mount the laser and target. Note: Figure 22 shows the target mounted in the Hamar Laser A-807 fixture stand. In order to take advantage of the automated calibration features available with the Read8 software, this fixture stand must be used for calibrating center and slope targets.
  • Page 35 3. Start the Read8 program and select Target Setup from the Setup Screen. Click the New Target button. The New Target screen displays (see Figure 24). 4. Click the down arrow next to the Type list box to see a list of targets. Select the target you want to add.

  • Page 36: Calibrating A Center-Only Target

    Calibrating a Center-Only Target 1. For the first reading, (in this case V+), center the target using the centering micrometer. This corresponds to Step 1 on the Calibration Screen (see Figure 26). The display should read close to 0.000 (within ±.005 in.). Center in such a way as to remove the micrometer backlash; that is, for a positive calibration reading, approach zero from a negative reading by adjusting the micrometer in a positive direction.

  • Page 37: Calibrating A Center-And-Slope Target

    Calibrating a Center-and-Slope Target In order to use the automated features of the Read8 software, calibration for a center-and-slope target must be performed with the target mounted in the A-807 calibration mounting fixture (see Figure 23). This fixture is equipped with both a centering micrometer and an angle micrometer.

  • Page 38: Appendix D -Troubleshooting Guide

    Appendix D –Troubleshooting Guide Problem Possible Solutions • No laser beam Ensure laser is powered on and check switch. If LED on front of laser is dim, the battery is probably low. If LED is bright, diode has probably failed. •...

  • Page 39: Appendix E - Care And Cleaning Of Target Optics

    Appendix E – Care and Cleaning of Target Optics The proper care and cleaning of optical windows and/or lenses of Hamar Laser’s position-sensing devices (targets) assures optimum performance. Contaminants on an optical surface increase scatter, absorb laser energy, and eventually degrade the accuracy of the position-sensing devices.

This manual is also suitable for:

L-702sp

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