TECHNICAL INFORMATION
NOTICE
DATE: April 15, 1998ISSUE NUMBER: 1108
SUBJECT: Frame A ATC Set-upSUPERSEDES NUMBER:
PRODUCT LINE: BMC30, BMC40/20PAGE 1 OF 6
1.0PNEUMATIC ATC SETUP
Set air pressure for 85 PSI with no activity._____
NOTE: AIR PRESSURE GUAGE MUST BE DUAL CALIBRATED
(PSI AND Kg/cm2).
Check air pressure drop during TC (must not exceed 10 PSI or volume may
may not be sufficient)._____
Check oil regulator for one-drop oil per 3 to 4 tool changes and adjust._____
Verify tool change height._____
Measured Height_____in._____mm
With shotpin retracted rotate magazine manually looking for tight spots in the
chain tension (because of sprocket ratio effect, both the upper and lower chains
should be inspected for approx. 1/8” deflection).
Unlock MagV1.XX: For BMC30 and BMC4020 jumper Mag Lock output
DC I/O J2-15 to 24VDC).
Unlock MagV2.XX: For BMC30 and BMC4020 go to ATC Diagnostics
Depress: Manual, Power, Start. Auxiliary, Enter, 100, Enter, F3
(mach set-up test), F4 (T/C Diagnostics), F4 (Toggle Lock)._____
Adjust low speed so that, after manually grabbing magazine, the volume
is high enough to resume motion check for 360 degrees, and both directions._____
After mechanical adjustment, verify 0 encoder count for Magazine Position 1;
for BMC30series and BMC4020 series. Verify encoder counts are displayed
correctly at each magazine position both CW and CCW._____
Check that the jam-nut on the Arm Cylinder is tight._____
ORIGINATOR: Tom Murden
REVISED BY:
PROPRIETARY INFORMATION
INFORMATION CONTAINED HEREIN IS THE PROPERTY OF HURCO MANUFACTURING COMPANY, INC. NO REPRODUCTION OR DISCLOSURE OF THIS INFORMATION SHALL BE MADE BY THE RECIPIENT TO ANY OTHER PERSON OR ORGANIZATION WITHOUT THE PRIOR WRITTEN CONSENT OF HURCO MANUFACTURING COMPANY, INC.
2.0ATC PNEUMATIC SETTINGS.
2.1PLUNGER CYLINDER
Plunger extend (locked) valve port A. Preset flow control (5) turns counter clockwise.
Plunger retracted (unlocked) switch location.
Plunger retract (unlocked) valve port B. Preset flow control (5) turns counter clockwise.
Plunger extended (locked) switch location.
2.2ATC ARM CYLINDER
Arm cylinder extend (ATC arm left) valve port B. Preset flow control (5) turns
counter clockwise.
Arm cylinder retract (ATC arm right) valve
port A. Preset flow control (5) turns
counter clockwise
Preset cylinder (Cap end)Preset cylinder (Rod end)
cusion needle valve (1.5) cusion needle valve (2) turnscounter clockwise turns counter clockwise
(arm right switch). (arm left switch).
*Note: All flow control and needle valve settings from fully closed postion.
2.3ATC DOOR CYLINDER
Door cylinder extend (open tool door) valve port A. Preset flow control (5) turns counter clockwise.
Tool door closed switch.
Preset both cylinder cushion screws (2.5) turns counter clockwise.
Tool door open switch.
Door cylinder retract (close tool door) valve port B. Preset flow control valve (5) turns counter clockwise.
2.4ATC PNEUMATIC MOTOR ASSEMBLY
Slow speed adjustment High speed adjustment
preset screw (6.75) turns preset screw full
counter clockwise. counter clockwise.
Magazine clockwise
rotation, port B.
Magazine counter-
clockwise, port A.
Verify operation with 24 tools loaded in the magazine and with no tools loaded
in the magazine, checking consecutive tool changes (both directions) and tool
changes that span several tools._____
3.0ATC Fine Tuning Adjustments
Enter ATC Diagnostics either from the Manual screen or from Auxiliary/
Configuration screen._____
3.1ATC Door Open/Close
Select Toggle door and Start. Did it bounce at the end of travel? If yes adjust
the cushion at the front side of the cylinder CCW. Make small adjustments until
the bounce is gone. Verify that the cylinder is not hitting hard (banging) at the end
of travel. If the cylinder is banging at the end of travel, adjust the cushion CW so
the travel of the cylinder is smooth across the entire travel stroke. Use the same
procedure to set the door close cushion._____
3.2Magazine Rotation
Check the speed of the magazine rotation. Push the rotate button and release so
the magazine indexes one position. Was the movement of the magazine smooth
or did the shot-pin engagement make the magazine jerk into position? If the
magazine is jerking into position you will have to adjust the low speed valve or
shot-pin valve to make tool engagement correct. Check both CW and CCW
directions._____
TIPS:
Magazine overshoots:
Is the magazine overshooting before the shot-pin engages. If overshooting, look
at the shot-pin through the left side of the ATC. Is the pin moving down slowly?
If yes, increase port A air by screwing the thumbscrew CCW. Also, if the
magazine slow speed is too fast you will have to slow the speed with the low
speed adjustment screw (turn CW about a ¼ turn at a time).
Shot-pin engaging to soon:
If the shot-pin is engaging to soon, the magazine may be moving too slowly.
If so, adjust the low speed valve 1/4 turn CCW at a time.
3.3Setting the ATC Height:
Enter ATC Diagnostics, Depress Manual, Power,
Start. Auxiliary, Enter, 100, Enter, F3 (mach set-up test), F4 (T/C Diagnostics).
Retract the Z axis to zero and remove any tools from the spindle. Rotate the
magazine to an open location (one with no tool). Move the magazine right.
Slowly jog the Z axis down. Make sure the fingers are lying flat and are not
bent. Measure from the spindle nose to the lower flange on the tool fingers.
Adjust Z up or down until you have positioned to 16mm as shown in the following drawing
Press F7 (more) until F3 displays Set ATC height. Press F3, Set ATC height. The
ATC height is now set. Select F5 move the magazine left. Install a tool holder in
the spindle. Select F6, move the magazine right. Observe the tool fingers engage
the tool. Did the fingers move up or down? You may need to adjust the ATC
height up or down until the fingers engage the tool without deflecting._____
3.4Unclamp Cylinder Push Stud Adjustment
Check to make sure that the Push Stud on the Unclamp Cylinder
has GT Washer (rubber grommet) installed._____
Apply Red Loctite if Washer is not present._____
Ensure that Push Stud Locknut is tight._____
The Tool Release Stroke should be 11.0mm (ref: 003-1015-001)_____
Adjust the Push Stud gap for 5.0mm (minimum).
Record measurement._____
Measure the push-out of tool, should be 0.5-1.0mm (maximum)._____
3.5Magazine Left/Right Movement
Move the magazine left and right. The movement right and left must be smooth
without banging or bouncing. Adjust the cushions to obtain smooth movement in
both directions._____
TIPS:
Magazine bangs as it engages the tool:
Does the magazine hit hard (bang) as it engages the tool completely. If yes, adjust the cushion screw on the end opposite
the cylinder shaft CW ¼ turn at a time. Repeat if necessary until the magazine
engages the tool completely without banging at the end of travel.
Magazine bounces while engaging tool:
If the magazine bounces as it starts to engage the tool, then turn the cushion screw CCW ¼ turn at a time until the movement is smooth (no bounce or bang).
Repeat the same procedure for adjusting magazine left with the cushion at the shaft
end of the cylinder.
NOTE: Remember this is a basic setup procedure and the main air valves may
need a little more adjustment open or shut to obtain fast smooth operation of the
ATC.
4.0ATC Test Programs
At this time run programs to check adjacent tool and random tool changes. If
everything looks smooth, lock down all jam nuts on all valves and cylinders._____
Sequence of Operations for a CHIP to CHIP tool change
1. The spindle is running at 2000 rpm.
2. The spindle is shut down.
3. The Z-Axis will move 1/2 its full travel.
4. Change adjacent tools.
5. Bring spindle to 2000 rpm.
6. Move 1/2 the full Z-travel.
The time required to achieve this on BMC30 and BMC4020 series is 11 seconds._____
Sequence of Operations for a TOOL to TOOL change:
1. The spindle is oriented.
2. Puts current tool away.
3. Magazine indexes to adjacent tool.
4. Picks up adjacent tool.
The time required to achieve this on BMC30 and BMC4020 series is 7 seconds._____
5.0Encoder Verification Table
Check the machining accuracy of the tool magazine by positioning to each station and recording the actual encoder count.
STATION# / ENCODER COUNT / ACTUAL COUNT / TOLERANCE1 / 0 / pulses +/- 1
2 / 43 / pulses +/- 1
3 / 85 / pulses +/- 1
4 / 128 / pulses +/- 1
5 / 171 / pulses +/- 1
6 / 213 / pulses +/- 1
7 / 256 / pulses +/- 1
8 / 299 / pulses +/- 1
9 / 341 / pulses +/- 1
10 / 384 / pulses +/- 1
11 / 427 / pulses +/- 1
12 / 469 / pulses +/- 1
13 / 512 / pulses +/- 1
14 / 555 / pulses +/- 1
15 / 597 / pulses +/- 1
16 / 640 / pulses +/- 1
17 / 683 / pulses +/- 1
18 / 725 / pulses +/- 1
19 / 768 / pulses +/- 1
20 / 811 / pulses +/- 1
21 / 853 / pulses +/- 1
22 / 896 / pulses +/- 1
23 / 939 / pulses +/- 1
24 / 981 / pulses +/- 1
Note: Actual encoder counts are displayed on the diagnostics page.
TIN 1108 Page 1 of 6