var app = angular.module('app', ['ngAnimate']);

app.controller('itemsController', function( $scope ) {

$scope.divisions    = [{id:12, div_name:' city1'},
                       {id:13, div_name:' city2'},
                       {id:14, div_name:' city3'}];

$scope.works        =[{wid:111, w_name:'work1'},
                      {wid:222, w_name:'work2'},
                      {wid:333, w_name:'work3'}];

 $scope.sub_works =[{wid:111, swid:001, swork:'swork1'},
                    {wid:222, swid:002, swork:'swork2'},
                    {wid:333, swid:003, swork:'swork3'},
                    {wid:111, swid:004, swork:'swork4'}];

$scope.save = function(data){
  alert(JSON.stringify(data));
 }
});

<table border="1">
    <tbody ng-repeat-start="division in divisions">
        <td>
            {{division.div_name}}
            <em>{{expanded}}</em>
        </td>
        <td>Values: {{divisions.length}}</td>
        <td>
            <button type="button" ng-click="expanded = !expanded">
                Expand
            </button>
        </td>
    </tbody>
    <tbody ng-repeat-end ng-show="expanded" ng-init='data={id:division.id,div_name:division.div_name,works:[]}'>
        <td colspan="3">

             <select ng-model="data.tt">
               <option value='01'>tt1..........</option>
               <option value='02'>tt2..........</option>
             </select><br/><br/>
                <ul ng-repeat="work in works" ng-init='data.works[$index]={wid:work.wid,w_name:work.w_name,sworks:[]}'>
                  <strong>{{$index+1}}.&nbsp;{{work.w_name}} </strong>
                   <li ng-repeat="sub in sub_works | filter : { wid : work.wid }"
                   ng-init="data.works[$index].sub_works[$index]={swid:sub.swid,swork:sub.swork}">

                     {{sub.swork}}
                      <input type=text ng-model='data.works[$index].sub_works[$index].input' />
                   </li>
                </ul><br/><br/>
                {{data | json}}
                 <button ng-click="save(data)">save</button>
        </td>
    </tbody>
</table>{{result |json}}