Partially Threaded Through Hole Step Parameters
When creating or modifying a partially threaded through hole step, the application displays the PartThreadThroughH dialog box. The partially threaded through hole step parameters are described in the table below.
When using the modifying commands, the existing parameter values are loaded from the model into the dialog box where they can be edited.
Use Show Image to display a graphical representation of the partially threaded through hole step. Use Show T&Q to add the tolerance and surface quality options to the dialog box.
Hole Dimensions
Dialog Field (Keyword) | Type | Label | Description |
|---|---|---|---|
TAP Units (TAP_UNITS) | Keyword | :METRIC :INCH :BSW :BSF :BSP :UNC :UNF :NPT :PIPE_RP :PIPE_G :TRAPEZOID :FLAT_TRAPEZOID :SAW :ROUND :ROUND_MINING :EDISON :PIPE_JIS_B_0203 :PIPE_PG :METRIC_FINE The default is :METRIC threads, if you have a metric length unit set within Creo Elements/Direct Modeling and :INCH if you have set an imperial length unit. | |
ThreadDia (THREAD_DIA) | Length | D1 | The nominal diameter of the thread. |
ThreadSize (THREAD_SIZE) | Length | The pitch of the thread. | |
ThreadTpi (THREAD_TPI) | Number | Alternative method to specify the pitch of the thread by entering the Thread Per Inch value for all imperial style threads and pipe threads. | |
Starts (THREAD_STARTS) | Number | The number of thread starts. This value has no effect upon the geometrical representation of the threaded hole, but the data is needed for complete specification of the thread in order to create correct manufacturing documents. The default is 1. | |
Direction (THREAD_HAND) | Keyword | The direction of the thread. This value has no effect upon the geometrical representation of the threaded hole, but the data is needed for complete specification of the thread in order to create correct manufacturing documents. The following keywords are possible : :RIGHT (the default) :LEFT | |
Nom.PipeDia. (NOMINAL_PIPE_DIA) | Length | The nominal diameter of a pipe thread, which is not the "outer" diameter of the thread. This value has no effect upon the geometrical representation of the threaded hole, but the data is needed for complete specification of the pipe thread in order to create correct manufacturing documents. | |
Drill Dia (DRILL_DIA) | Length | The diameter of the hole to be drilled. | |
Tap Depth (TAP_DEPTH) | Toleranced Length | T2 | The depth of the thread. If you have added a tolerance to this parameter through the Creo Elements/Direct Annotation 3D module or by direct specification within the dialog box, it is written into the output file to be transferred to the receiving CAM system (in either ISO or values). See the description about specifying the Tolerance of a length value for further information. |
DrillDepth (DRILL_DEPTH) | Toleranced Length | T1 | Specifies the drilling depth. The depth is defined as the length of the drilled cylinder and does include the tip(s)of the drill tool(s) of the adjacent blind holes. The drill depth of the through hole step is a toleranced value because the depth is not given directly by start- and end-face and this dimension has to have a certain tolerance. If you have added a tolerance to this parameter through the Creo Elements/Direct Annotation 3D module or by direct specification within the dialog box, it is written into the output file to be transferred to the receiving CAM system (in either ISO or values). See the description about specifying the Tolerance of a length value for further information. See also comments about specifying hole depths for further information. See also Blind Hole Step Parameters. |
Cham Depth (CHAMFER_DEPTH) | Length | T3 | The depth of the chamfer measured in the direction of the axis. |
Cham.Angle (CHAMFER_ANGLE) | Angle | The tool tip angle of the sink tool. | |
BckChDepth (BACK_CHAMFER_DEPTH) | Length | T4 | The depth of the backside chamfer measured in the direction of the axis. |
BckChAngle (BACK_CHAMFER_ANGLE) | Angle | The tool tip angle of the sink tool. |
You can enter the following parameters as keyword value pairs at the user input line or in the customization tables:
Dialog Field (Keyword) | Type | Label | Description |
|---|---|---|---|
ThreadTpi Numerator (THREAD_TPI_NUM) | Non-negative Number | The numerator part of a rational thread per inch value for the thread pitch. This parameter is applicable to :NPT and :UNC type threads. For other type of threads, if a positive value occurs in a customization table, then the numerator value is forced to zero. | |
ThreadTpi Denominator (THREAD_TPI_DEN) | Positive Number | The denominator part of a rational thread per inch value for the thread pitch. This parameter is applicable to: NPT and :UNC type threads. For other type of threads, if the value in a customization table is greater than one, then the denominator value is forced to one. |
The remaining options in the dialog box do the following:
Dialog Field (Keyword) | Description |
|---|---|
Show/Hide Image (IMAGE_SHOWN) | Shows or hides the graphical representation of the machined hole. |
Show/Hide Tolerance & Quality (TOLERANCE_AND_QUALITY) | Shows or hides additional tolerance-related input fields. |
As soon as the application has enough data it provides a graphical feedback to outline the size of the feature being defined. This feedback is updated with every new parameter. Normally, feedback is displayed as soon as a face is selected and a diameter is specified.