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Press-fitting operations

Question

Question

I would like to use a servo system to perform press-fitting operations.
What should I do?

Answer

Answer

Move to a specified position and return to the origin position in “PR posiotion control mode”.
Press-fitting can be easily done by switching to “torque control mode”.
Please refer to the following for the setting procedure.

Setup Steps

Connect the computer and AC servo system using the dedicated USB cable.
Start the configuration software: KSD-Soft and connect the AC servo driver via USB.

1. Reading parameters

Start the “Parameter Editor” and click “Read Parameter” from the icon to read the servo driver parameters.

2. Set the operation mode

Start the “Mode Setting” and set the operation mode to “[0x09]PR/T: Position control mode / Torque control mode”.
To enable the settings, turn the servo system power off -> on.
* If you turn the servo system power off -> on, KSD-Soft will go offline, so please reconnect.
servo-44-1

3. DIO settings

Start “Digital IO / JOG Control” screen and set the digital input.
This time, we will configure settings so that the following can be done from the external controller.
– Switching between position control (PR) mode / torque control mode (Figure below: red frame)
– Movement to a specified position in PR mode and return operation to the home position (below: orange frame)
– Switching the torque value (Figure below: purple frame)
servo-44-2

4. Setting PR mode

Launch the PR mode setting screen.
Set the homing setting.
Set “Move to specified position” in PR #1.
servo-44-3

Set “return operation to the home position” to PR #2.
servo-44-4

5. Setting the torque control value

– If you set three setting values and use them by switching, he should set them to P1.012 to P1.014.
( If the torque value is fixed, please set it to P1.012 )
– When controlling with an external analog signal, wire as shown below.
servo-33-1

6. operating

We will explain torque control using P1.012 as an example.
(Please decide the origin position in advance)

Steps Situation Input
DI1 DI2 DI3 DI4 DI6 DI7 DI8
1 Set PR mode OFF ON OFF OFF OFF OFF OFF
2 Servo ON ON ON OFF OFF OFF OFF OFF
3 Select PR #1 ON ON OFF OFF OFF ON OFF
4 Move into position ON ON OFF OFF ON ON OFF
5 Move completed ON ON OFF OFF OFF OFF OFF
6 Switch to Torque control
Press-fitting operation
ON OFF ON OFF OFF OFF OFF
7 Press-fit completed
Select PR #2
ON ON OFF OFF OFF OFF ON
8 Back to home posiotion ON ON OFF OFF ON OFF ON
9 Move completed ON ON OFF OFF OFF OFF OFF

*For the second cycle, go to step 3

7. Torque control with speed limit

Click here for details
Set speed limit switching (Figure below: blue frame)
servo-44-6

Steps Situation Input
DI1 DI2 DI3 DI4 DI6 DI7 DI8 DI9
1 Set PR mode OFF ON OFF OFF OFF OFF OFF OFF
2 Servo ON ON ON OFF OFF OFF OFF OFF OFF
3 Select PR #1 ON ON OFF OFF OFF ON OFF OFF
4 Move into position ON ON OFF OFF ON ON OFF OFF
5 Move completed ON ON OFF OFF OFF OFF OFF OFF
6 Switch to Torque control
Press-fitting operation
ON OFF ON OFF OFF OFF OFF ON
7 Press-fit completed
Select PR #2
ON ON OFF OFF OFF OFF ON OFF
8 Back to home posiotion ON ON OFF OFF ON OFF ON OFF
9 Move completed ON ON OFF OFF OFF OFF OFF OFF

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