Doosan-Servo-Driven-Tail-Stock-MANUAL-ENG

Tail Stock (Servo Driven)

Tail Stock servo system (B-axis) specification.

Thrust status

sensor(SX74)

Servo motor (B-axis)

2.34.1 Tail Stock operation

 1) Tail stock operation mode

	P2100/2600 Series		P3100 Series

 

Tail stock is controlled by servo motor. The axis name is B-axis.

General traverse control is valid like speed and position control.

And torque control can be executed to support workpiece by G300 or

foot switch operation.

     B-axis of tail stock has two operation modes as the followings.

▶ Traverse mode : Speed and position control is valid. (JOG button, MPG, G00/G01 command)

▶ Thrust mode : Torque control is valid (Foot Switch, G300 / 301 commanded)

 2) Traverse mode

     There are some restrictions in traverse operation as follows,

   - Tail stock thrust should be released.

   - Main spindle should be stopped

① Manual reference return

         - If the Jog + button are pressed in "REF" mode after selection of B-axis, B-axis is returned to reference position.

         - Traverse speed has F0% or 25% in operation panel.

② Manual feed traverse

         - If the Jog +/- button is pressed in "JOG" mode after selection of B-axis, B-axis is traversed.

         - Traverse speed override has 10% steps from 0% to 200%. When override is 100%, speed is 1000 mm/min.

③ Manual rapid traverse

         - If the Jog +/- button and rapid button is pressed in "JOG" mode after selection of B-axis, B-axis is traversed with rapid.

         - Traverse speed has F0%, F25% and 100% when override is 100%, speed is 7000 mm/min.

④ MPG traverse

         - If the handle of MPG is turned in "HANDLE" mode after selection of B-axis.

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⑤ Auto feed traverse

         - B-axis can be traversed by "G01 Bxxx.xxx Fxxx.xxx" command in auto mode.

         - Traverse speed override has 10% steps from 0% to 200%. The maximum speed is 1000 mm/min.

         - Incremental command is not valid.

⑥ Auto rapid traverse.

         - B-axis can be traversed rapidly by "G00 Bxxx.xxx Fxxx.xxx" command in auto mode.

         - Traverse speed has F0%, F25% and 100% when override is 100%, speed is 7000 mm/min.

   If the tail stock is moved on the thrust mode or thrust is activated, the general traverse command is not valid.

   If general traverse command is issued, the following alarm is happened at the machine.

   Thrust mode will be released by pressing foot switch or command G301.

     NC PS alarm  : No.130 “NC AND PMC AXIS ARE CONFLICTED”

     PMC alarm    : No.2092 “TAILSTOCK COMMAND ALARM”

3) Thrust mode

① Auto command with thrust

 G300 B-xxxx. ; (Tail stock is moved to minus direction with thrust)

G301 ; (Thrust is released and tail stock keep the position)

      Tail stock starts moving to chuck side with commanded thrust by G300 command.

      G300 is finished after the commanded thrust is activated and tailstock is stop.

       - Traverse Speed with thrust  : 360mm/min

       - Thrust : Thrust can be issued by "B-xxxx", command unit is kgf.

      After G300 command, if the traverse distance is over 1000mm, the following alarm is happened.

      Alarm level of traverse distance can be set at D2000. (Standard setting value is 100000, unit 0.001mm)

         No. 2191 “TORQUE CONTROL COMMAND ERROR” (Message alarm level)

      Tail stock thrust is released by G301 command. Tail stock is changed to general traverse mode.

      After G301, tail stock should be traversed to opposite direction of thrust immediately.

② Manual command with thrust.

     There are some restrictions in manual thrust operation as follows,

 - Machine is not under auto running with the excepting of M00/M01

 - Main spindle is under stop with the exception that M31 is commanded in advance.

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      Tail stock is moved to chuck side with commanded thrust by pressing tail stock foot switch.

      If the foot switch is taken off, tail stock is stopped and thrust is activated.

      Although foot switch is taken off without workpiece support, tail stock is stopped on the thrust mode.

      If the foot switch is pressed, again, tail stock is moved to opposite direction and thrust mode is released.

      Tail stock keep moving for pressing foot switch.

 

B-

T

      There are soft buttons (100kgf~800kgf) on the bottom of "Tail Stock Thrust Setting Screen". If the any button is pressed, 

      Manual thrust value is decided and the current value is displayed on the 'INPUT THRUST VALUE" window.

      Thrust value can be decided by input directly, too. Thrust input window is activated by pressing right cursor direction button

       on MDI. The window color is changed to yellow, type thrust value on the "INPUT" window.

      At that time Thrust value can be input directly by pressing "INPUT" button on MDI after input thrust value

Caution

 1. There are some difference between real thrust and commanded thrust.

 2. The maximum thrust value .

      - Puma 2100/2600 Series max.thrust : 800kgf

      - Puma 3100 Series max,thrust : 800kgf

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4) Servo Driven tail stock power setting screen

① Search screen

▶ Press "CUSTOM1” on MDI keyboard.

▶ Press " 9. TAIL-S"

 

② Thrust setting

      There are soft buttons (100kgf~800kgf) on the bottom of "Tail Stock Thrust Setting Screen". If the any button is pressed,

      Manual thrust value is decided and the current value is displayed on the 'INPUT THRUST VALUE" window.

      Thrust value can be decided by input directly, too. Thrust input window is activated by pressing right cursor direction button

       on MDI. The window color is changed to yellow, type thrust value on the "INPUT" window.

      At that time Thrust value can be input directly by pressing "INPUT" button on MDI after input thrust value

           - Puma 2100/2600 Series max.thrust : 800kgf

           - Puma 3100 Series max,thrust : 800kgf

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  ③ Status display

      B-axis position is displayed during tail stock is traversed with thrust.

     “THRUST” marking is changed from "NG” to “OK” and X12.7 is changed from "on" to "off" after tail stock support the workpiece.

     If SX74 is turned on before thrust is released, alarm 2092 is happened to the machine and main spindle is stop.

5) Alarm

 ① NC alarm

▶  PS ALARM No.130 “NC AND PMC AXIS ARE CONFLICTED”

      B-axis moving command was issued on the traverse mode and thrust mode at the same time.

② PMC alarm

▶  NO.2092 “TAILSTOCK COMMAND ALARM”(FEED HOLD LEVEL ALARM)

       B-axis jog traverse command was issued when thrust is activated. It’s need to command B-axis jog traverse after release thrust.

       SX74 was turned on before thrust is released, It’s need to check tail stock and sensor connection (X12.7).

▶   NO.2191 “TORQUE CONTROL COMMAND ERROR”(MESSAGE LEVEL ALARM)

      After G300 command, If the traverse distance is over 1000mm, the following alarm is happened.

      Alarm level of traverse distance can be set at D2000. (Standard setting value is 100000, unit 0.001mm)

6) PARAMETER

① NO.2007 Bit7 , FRCA(#7) Torque control function is used (1)

② NO.1803

Bit0 TQI, Within a torque limit, an in-position check is not made(1)

Bit1 TQA, Within a torque limit, an excessive stop-time/move-time error is Checked (1)

Bit4 TQF, When torque control is performed by the PMC, follow-up operation is performed (1)

③ NO.8010 (PMC AXIS GROUP SETTING)

“2” DI/DO 2nd Group (G154 to G165) is used.-> B-AXIS (G300, G301, Servo Driven Tail stock)

⑤ Keep relay

       K16.5 : Servo driven Tail stock is used (1), not used(0)

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