gazebo_models/simple_gripper/model-1_2.sdf

<?xml version="1.0" ?>
<gazebo version="1.2">
  <model name="simple_gripper">
    <link name="riser">
      <pose>-0.15 0.0 0.5 0 0 0</pose>
      <inertial>
        <mass>10</mass>
      </inertial>
      <collision name="collision">
        <geometry>
          <box>
            <size>0.05 0.05 1.0</size>
          </box>
        </geometry>
        <surface>
          <contact>
            <ode>
              <max_vel>0.0</max_vel>
            </ode>
          </contact>
        </surface>
      </collision>
      <visual name="visual">
        <geometry>
          <box>
            <size>0.05 0.05 1.0</size>
          </box>
        </geometry>
      </visual>
    </link>
    <link name="palm">
      <pose>0.0 0.0 0.05 0 0 0</pose>
      <inertial>
        <mass>0.5</mass>
      </inertial>
      <collision name="collision">
        <geometry>
          <box>
            <size>0.1 0.2 0.1</size>
          </box>
        </geometry>
        <surface>
          <contact>
            <ode>
              <max_vel>0.0</max_vel>
            </ode>
          </contact>
        </surface>
      </collision>
      <visual name="visual">
        <geometry>
          <box>
            <size>0.1 0.2 0.1</size>
          </box>
        </geometry>
      </visual>
    </link>
    <link name="left_finger">
      <pose>0.1 0.2 0.05 0 0 -0.78539</pose>
      <inertial>
        <mass>0.1</mass>
      </inertial>
      <collision name="collision">
        <geometry>
          <box>
            <size>0.1 0.3 0.1</size>
          </box>
        </geometry>
        <surface>
          <friction>
            <ode>
              <mu>0.1</mu>
              <mu2>0</mu2>
            </ode>
          </friction>
          <contact>
            <ode>
              <max_vel>0.0</max_vel>
            </ode>
          </contact>
        </surface>
      </collision>
      <visual name="visual">
        <geometry>
          <box>
            <size>0.1 0.3 0.1</size>
          </box>
        </geometry>
      </visual>
    </link>
    <link name="left_finger_tip">
      <pose>0.336 0.3 0.05 0 0 1.5707</pose>
      <inertial>
        <mass>0.5</mass>
      </inertial>
      <collision name="collision">
        <geometry>
          <box>
            <size>0.1 0.2 0.1</size>
          </box>
        </geometry>
        <surface>
          <friction>
            <ode>
              <mu>.1</mu>
              <mu2>0</mu2>
            </ode>
          </friction>
          <contact>
            <ode>
              <max_vel>0.0</max_vel>
            </ode>
          </contact>
        </surface>
      </collision>
      <visual name="visual">
        <geometry>
          <box>
            <size>0.1 0.2 0.1</size>
          </box>
        </geometry>
      </visual>
    </link>
    <link name="right_finger">
      <pose>0.1 -0.2 0.05 0 0 .78539</pose>
      <inertial>
        <mass>0.1</mass>
      </inertial>
      <collision name="collision">
        <geometry>
          <box>
            <size>0.1 0.3 0.1</size>
          </box>
        </geometry>
        <surface>
          <friction>
            <ode>
              <mu>0.1</mu>
              <mu2>0</mu2>
            </ode>
          </friction>
          <contact>
            <ode>
              <max_vel>0.0</max_vel>
            </ode>
          </contact>
        </surface>
      </collision>
      <visual name="visual">
        <geometry>
          <box>
            <size>0.1 0.3 0.1</size>
          </box>
        </geometry>
      </visual>
    </link>
    <link name="right_finger_tip">
      <pose>0.336 -0.3 0.05 0 0 1.5707</pose>
      <inertial>
        <mass>0.1</mass>
      </inertial>
      <collision name="collision">
        <geometry>
          <box>
            <size>0.1 0.2 0.1</size>
          </box>
        </geometry>
        <surface>
          <friction>
            <ode>
              <mu>0.1</mu>
              <mu2>0</mu2>
            </ode>
          </friction>
          <contact>
            <ode>
              <max_vel>0.0</max_vel>
            </ode>
          </contact>
        </surface>
      </collision>
      <visual name="visual">
        <geometry>
          <box>
            <size>0.1 0.2 0.1</size>
          </box>
        </geometry>
      </visual>
    </link>
    <joint name="palm_left_finger" type="revolute">
      <pose>0 -0.15 0 0 0 0</pose>
      <child>left_finger</child>
      <parent>palm</parent>
      <axis>
        <limit><lower>-0.8</lower><upper>0.8</upper></limit>
        <xyz>0 0 1</xyz>
      </axis>
    </joint>
    <joint name="left_finger_tip" type="revolute">
      <pose>0 0.1 0 0 0 0</pose>
      <child>left_finger_tip</child>
      <parent>left_finger</parent>
      <axis>
        <limit><lower>-0.8</lower><upper>0.8</upper></limit>
        <xyz>0 0 1</xyz>
      </axis>
    </joint>
    <joint name="palm_right_finger" type="revolute">
      <pose>0 0.15 0 0 0 0</pose>
      <child>right_finger</child>
      <parent>palm</parent>
      <axis>
        <limit><lower>-0.8</lower><upper>0.8</upper></limit>
        <xyz>0 0 1</xyz>
      </axis>
    </joint>
    <joint name="right_finger_tip" type="revolute">
      <pose>0 0.1 0 0 0 0</pose>
      <child>right_finger_tip</child>
      <parent>right_finger</parent>
      <axis>
        <limit><lower>-0.8</lower><upper>0.8</upper></limit>
        <xyz>0 0 1</xyz>
      </axis>
    </joint>
    <joint name="palm_riser" type="prismatic">
      <child>palm</child>
      <parent>riser</parent>
      <axis>
        <limit><lower>0</lower><upper>0.9</upper></limit>
        <xyz>0 0 1</xyz>
      </axis>
    </joint>

    <gripper name="simple_gripper">
      <grasp_check>
        <detach_steps>40</detach_steps>
        <attach_steps>20</attach_steps>
        <min_contact_count>2</min_contact_count>
      </grasp_check>
      <gripper_link>right_finger</gripper_link>
      <gripper_link>right_finger_tip</gripper_link>
      <gripper_link>left_finger</gripper_link>
      <gripper_link>left_finger_tip</gripper_link>
      <palm_link>palm</palm_link>
    </gripper>
  </model>
</gazebo>