Tutorial: How to create a cavity in Hydroman.

Goal:

Creating your own cavities.

Steps:

• Preperations

  1. Start with a new, empty Hydroman file and adjust the dimensions of the manifold file to fit the desired cavity.

  2. Adjust the file properties, press and make sure ‘Drilling depth to tip of bit’ is unchecked and ‘Thread length from top’ is checked.

     

  3. Create a new hole on Face 1 (Right click -> ‘Create Hole at Cursor’)

  4. Select the hole, press [A] and make sure ‘Cartridge’ is checked.

  There are three frequently used menus while creating a cavity:

  Change Hole(s) [Enter]
  Here you can add and remove steps of the cavity and adjust the diameter, depth and thread. (For threads check ‘Tools -> Thread Table…’ and use column ‘Thread Type’ for the thread name)

  Attributes [A] Here you can make a step spotfaced and make it hidden in the drilling list.

  Extended Data [E] Here you can change the top angle of the drill and create the ports of the cavity per step.

• Creating the cavity.

  Now you can start adding steps and adjusting the top angle and/or create spotfaces. Keep in mind that in most datasheets the depth of the drillings is dimensioned from the spotface (locating shoulder). In Hydroman the depth is always dimensioned from the edge of the manifold, so you might need to add a certain value to the dimension to correct it for Hydroman We recommend working step by step, e.g.; Create step one, adjust the top angle of step one and then adjust the depth of step one. Add the thread and the ports of the cavity after all steps are created. The Sun T-10a cavity on the right is used as an example. After you’ve created all the steps of the manifold, adjusted the top angles of the drill and added the thread you need to specify which steps are required for manufacturing and thus shown in the drilling list. By default, all steps are shown, so some steps need to be hidden. These steps will also not be changeable while creating a manifold (Because it’s a cavity you shouldn’t be able to change them!)

  

• Select the cavity,

  

  press [A] and select all the steps you want to hide in the drilling list. Then check ‘Hidden’. All the holes that you can’t see in the drilling list are also greyed out in the ‘Change Hole(s)’ menu (You can still change them by unchecking ‘Lock Hidden Diameters’ but use extreme caution!). A detail drawing of the cavity (which you need from the manufacturer) will be placed on the production drawing, so the cavity for Hydroman must be the same as that. Also when the cavity has a step that is the locating shoulder (LS), this should be checked in the ‘Hole Attributes’ menu. This is the step the cavity is dimensioned from (The zero depth in the datasheet), this is usually the top spotface but as with multiple Sun cavities it can be anywhere in the cavity. If the locating shoulder is hidden in the drilling list as shown in the example. A remark in the shown step will be added; ‘LS=0,8’. This remark will automatically change when you set the cavity to another depth.

• After creating all the steps you can create the ports in the ‘Extended Data’ menu [E]. You can set where the port starts (‘Port min’) and ends (‘Port max’). You can also add a name to the port, if you leave it on ‘<>’ it will automatically name the ports (‘1’ on the bottom, ‘2’ the one above, etc.) Hydrosym will use these port names for exporting, so make sure the port names in the Hydrosym component and Hydroman cavity are corresponding.

  

  You’ll also notice the ‘Extra Diameters…’ button. Here you can set the extra diameters when the cavity is set deeper. With Sun cavities these extra diameters are specified in their datasheets, while other cavities simply need a large spotfaced extra step to make sure it fits. It is required for a locating shoulder (LS) to be set in the ‘Hole Attributes’ menu for the extra diameters.

  

• Adding information.
  Next we can fill in some information about the cavity. Under the ‘Valve List’, [V], press ‘Add’ and fill out the information. What’s important is the ‘Detail Drawing’, this is the filename of the detail drawing that will be placed on the production drawing.

  

  Subsequently select the cavity, right click and select ‘Hole Properties’, here you can fill in the title and description of the cavity that will be shown in the library (If no title is filled in, the filename of the Hydroman will be used for the title in the library).

  

• Check and save.

  Afterwards you can check the cavity by selecting the cavity and pressing [W]. A window will pop up with the manufacturer, title description and port info of the cavity. Here the port min. and max. are shown as well as the names, sizes and centers of the ports.

  

  If the cavity is correct and finished. Revert the file properties. Press

  

  and make sure ‘Drilling depth to tip of bit’ is checked and ‘Thread length from top’ is unchecked.

  

  Save the file in the desired folder in the ‘Hydroman Files’ library and refresh the library to make the cavity show up in the ‘Files’ library.