Cam-Coordinates dialog-box

See Add Cam-Data FB


Edit a Cam-Data FB and select a 2D-Cam,

Then you can:

Calculate cam-coordinates in different formats - see below
Save the cam-coordinates as different file-types - see below

AND

Close the dialog
Analyse the cam with the data-types at the five output-connectors of the Cam-Data FB - see Cam Data FB.
hmtoggle_plus12D-Cam : Related Elements and Actions

2D-Cams have a number of related commands and dialog-boxes. Their relationships are indicated in the table below.

Action 1A

Add 2D-Cam

... optional ...

 

Action 1B

Edit 2D-Cam dialog-box

Action 2A                

Add Cam-Data FB

Action 2B

Edit the Cam-Data FB to link it to a 2D-Cam. Do 3A and 3B.

Action 3A

Do Cam-Analysis (with Graph FB)

Action 3B

Edit the Cam-Data FB again. Calculate Cam-Coordinates

*Force and Stress analysis only: Configure Power Source

2D-Cam Coordinates: File Formats and File-Types

 Save Cam Surface as :

Bi-Arcs

Equal Machine Angle Increments

STEP :

N/A

Internal, External as Surfaces

TEXT :

Internal, External

Internal, External, Pitch-Curve

DXF :

Internal, External

Internal, External

 


 

 

Direct export to SOLIDWORKS as :

Internal, External

Internal, External, Pitch-Curve

Table of 2D-Cam file-types and formats


Cam-Coordinates dialog-box

Cam Coordinates dialog-box - MD14.

Cam Coordinates dialog-box - MD14.

Top-Tip:

To 'paste' cam coordinate data directly into Excel®

1.Select the 'Tab' delimiterRed-14-11
2.Calculate the Data with the Recalculate buttonRed-14-8
3.Click the 'Copy all data to the Clipboard Red-14-3
4.In excel, Paste Special

1r

Icon-DialogCamCoords-Clear

Clear Data in the table

2r

Icon-DialogCamCoords-Save

Save as File types

STEP
DXF
ASC
TXT

3r

Icon-DialogCamCoords-Clip

Copy Data in table to Clipboard

4r

Icon-DialogCamCoords-Cam1

Icon-DialogCamCoords-Cam2

Icon-DialogCamCoords-Pitch

Calculate Coordinates for

Internal Cam 1
External Cam 2

5r

Icon-DialogCamCoords-Points

Icon-DialogCamCoords-Chords

Toggle :

Equal Increments: Calculate Cam-Coordinates with equal increments of Master Machine Angle with the 'Number-of-Points' as entered in '# Points' (10).

Chord Error: Calculate Cam with Biarcs, with a maximum Chord Error equal to the value in Box (10)

6r

Icon-DialogCamCoords-Lines

Icon-DialogCamCoords-BiArcs

Calculate Cam Coordinates as:

XY-Points as Equal Machine Angle Increments

Bi-Arcs with a Chord Error

7r

Icon-DialogCamCoords-SolidWorks

If SOLIDWORKS is not open, this button will start SOLIDWORKS®.

If SOLIDWORKS is not open, but a Part document is not active, nothing happens. You must open or start a SOLIDWORKS® Part document.

If a SOLIDWORKS Part document is open, this button sends the Cam data to the active SOLIDWORKS® Part document.


Bi-Arcs are sent to SOLIDWORKS as Arc sketch entities.

Points are sent to SOLIDWORKS as a list for the Curve feature. You use Convert-Entities to convert the Curve to a Spline sketch entity. See Note 4

8r

Icon-DialogCamCoords-RebuildRed

Icon-DialogCamCoords-RebuildGreen

Traffic-Light Red - Click to calculate coordinates.

Traffic Light Green - Cam Coordinates are ready. You can save them to disk or export to SOLIDWORKS®

When you click this icon, the Cam-Coordinates are calculated with the selections:

Red-14-4 : Cam 1 or Cam 2 or the Pitch Circle Coordinates
Red-14-5 : Equal increments of the Master Machine Angle(Points only) or Chord Error (Biarcs only)
Red-14-10a : Specified Number of Point or Chord Error.

 

 

Icon-DialogCamCoords-Open

(Does not do anything (MD14+)): Closed Cam: When you calculate the Cam-Coordinates, the first and last cam point become different.


Icon-DialogCamCoords-Closed

(Does do anything (MD14+))  Open Cam: The first and last coordinate become the same. The cam will be closed.

9r

Icon-DialogCamCoords-Measurment

Click to display a Cam 'plot' of actual cam-points that are calculated.

10r

Cam-ChordalError

Enter Maximum Chord Error

Use with Chord Error option. (Minimum ~0.1µm. Experiment!)

CamNumberofPoints

Enter Number-of-Points

Use with Equal Increments option. (Maximum ~100,000. Experiment!)

11r

Icon-DialogCamCoords-SaveOptions

'Save Options' button (See 'Save Options' box, below)

Delimiter for a Cam Save as TXT file: Comma (,); Tab (   ); Colon (:); Space ( ); Semi-Colon (;); Dash (-).

STEP File Options:

Spline with End Corrections?

Spline to Interpolate 'actual' Kinematic Points?

12r

The Cam Coordinates, using the button settings detailed above.

Save Options:

'Save Options' box.

'Save Options' box.

Click the Save Option buttons to show:

Delimiters

When you save the Cam data to a text file, you can add a different 'delimiter' between each column of data at each cam  'index'.

This is useful for those customers that have a ',' as a decimal-separator, and the default ',' as a number delimiter. The two ',' will confuse programs when they import the data.


STEP Save Options:

End Correction
Interpolate kinematic points.

Notes:

Note 1: For a rotating 2D-Cam (a standard 2D-Cam), make sure the centre of the Cam is Origin of the rotating-Part.

Note 2: The maximum error between the 'true' cam and the actual cam data is less with Chord Error with Arcs.

Note 4: The data will be on the Front of the SOLIDWORKS document, with Z columns as '0'. SOLIDWORKS fits a Spline to it immediately.

If you need to put the data on a different plane in SOLIDWORKS, then you will need to change the data slightly in Excel. Add a column of zeros in the X, Y or Z column. Possibly multiply the X-column by -1. to mirror the Part. Then import the data as a Curve entity into SOLIDWORKS.


The Cam as BiArc Data has six columns:

1

2

3

4

5

6

Arc Radius

Arc Start Point X Coordinate

Arc End Point X Coordinate

Arc Start Point Y Coordinate

Arc End Point Y Coordinate

Arc Angle Range (degs)

Tutorials and Reference Help Files for MechDesigner and MotionDesigner 14.2 + © Machine, Cam, Mechanism, and Motion Design Software by PSMotion Ltd