CAM for 3-Axis Milling Professional Certification Prep

Outline

Pre-test

Before you begin this course, test your skills by taking the following assessment to see where you stand. Keep track of your incorrect answers to know which skills you should study. You'll have a chance to take this same practice test again at the end of the course to see how you've improved.

All questions must be answered to submit your assessment.

Pre-assessment

45 questions

1. A CNC programmer is preparing to machine a part that will have its profiled turned in a lathe before being moved to a mill. Which of the following is the best practice for preparing the model?

Define the stock as a fixed size cylinder when creating the setup.
Duplicate the body to remove mill features for stock, then continue to mill the part.
Define the stock as a fixed size tube when creating the setup.
Revolve a sketch that represents the lathe profile, then continue to mill the part.

Error: Select an answer

2. A CNC programmer needs to create a partial 2D contour toolpath without creating a sketch to draw the required geometry. How can this be accomplished?

Use Open contour selection on existing model edges using chaining
Project the required geometry onto an active sketch plane
Add a work point at the desired start and stop points
Use Avoid Touch Surfaces to limit where the tool can cut

Error: Select an answer

3. A part being machined has a toolpath that extends beyond the outer boundary of the part. How can this be modified?

Enable Rest machining from previous operations
Enable Stock Contours
Enable Rest machining from setup stock
Disable Stock Contours

Error: Select an answer

4. A CNC programmer is setting up a probe to reset a work coordinate system based on machine surfaces. What would they configure If they wanted to probe the stock instead of the model?

Increase bottom height offset
Increase top height offset
The Probe Mode
The probe used for the probing cycle

Error: Select an answer

5. A CNC programmer is creating an NC Program to simultaneously machine the front and rear stations of a part using a dual station vise. They notice that the different tools are being used for the work offsets for both setups, and that the tools are running each work offset sequentially. If they wanted to save time so that both tools are used simultaneously in both setups using one program, what would be an effective option?

Enable Reorder to Minimize Tool Changes
Rearrange the toolpaths in the order they should be machined
Enable Order by Tool
Enable Order by Operation

Error: Select an answer

6. A CNC programmer wants to configure a toolpath to descend directly into the part. Which of the following accomplishes this?

Increase ramp taper angle
Increase ramp diameter
Set Ramp Type to Plunge
Increase ramp taper angle

Error: Select an answer

7. A part is being manufactured using a three-axis vertical machining center. In which direction should the Work Coordinate System Z-axis face?

Towards the top face of part
Away from the top face of part
Perpendicular to the top face of the part towards the front face of the machine
Perpendicular to the top face of part towards the back of the machine

Error: Select an answer

8. A team of designers and CNC programmers wish to ensure no burrs are found on a part after it is machined. Which of the following is best to record this kind of inspection?

Pass/Fail
Bluetooth calipers
Setting tolerances in Fusion 360
Measurement input

Error: Select an answer

9. When using 3D Adaptive Clearing, a CNC programmer wants to limit operation of the machine to only remove material not yet removed by previous operations. How can this be accomplished?

Use a containment boundary
Enable stock contours
Slope Containment
Rest Machining

Error: Select an answer

10. A CNC programmer wishes to machine all the stock of a part without limitation. Which of the following options allows for this?

Enable Stock Contours
Set Machining Boundary to None
Enable rest machining from previous operations
Enable slope

Error: Select an answer

11. A simulated toolpath currently retracts and descends to different contours of the model before finishing clearing the area where it is located. How can this be optimized?

Enable Rest machining from previous operations
Enable Order By Area
Decrease Retract Height
Enable Stock Contours

Error: Select an answer

12. On a setup sheet, where could you find information about the part size?

In the operation list
Under Setup
In the file name
In the tool list

Error: Select an answer

13. A CNC programmer needs to configure a toolpath so that the tool moves directly to the safest, lowest height where the tool clears the workpiece. How is this done?

Enable minimal retraction
Decrease the feed height
Decrease the bottom height offset
Decrease the top height offset

Error: Select an answer

14. A file has two setups, one for the front operation and one for the back operation. Roughing, finishing, and chamfering toolpaths have been applied to both operations. If you wanted to only post the code for the face and the chamfer of the front operation, which of the following would be a valid option?

Create an NC program and select only the roughing, finishing, and chamfering toolpaths
Create an NC Program and select the second setup
Create an NC program and select the first setup
Create an NC program for each of the desired toolpaths

Error: Select an answer

15. A CNC programmer is preparing to machine a part and needs to edit the part to mimic starting stock. Which Workspace should this happen within?

Design
Animate
Render
Drawing

Error: Select an answer

16. When simulating a toolpath, the toolholder collides with the workholding. Which of the following can be changed to mitigate this?

The part must be manufactured on another machine
The toolpath can be removed
The size of the toolholder can be updated
The toolpath can be used to derive another operation

Error: Select an answer

17. A part includes flat areas that need to be cleared that fall between the maximum roughing stepdown and the fine stepdown values. Which of the following allows for this?

Enable rest machining from previous operations
Enable stock contours
Increase maximum roughing stepdown
Enable Flat Area Detection

Error: Select an answer

18. A part has both a parallel and a contour toolpath applied to a sloped area. How can the toolpaths be configured so they do not overlap?

Enable Touch/Avoid Surface
Contain the toolpath based on heights
Enable Slope
Enable rest machining from previous operation

Error: Select an answer

19. When preparing a model to act as starting stock, which of the following heals the surfaces of holes and edges?

Delete Face
Replace face
Press Pull
Surface patch

Error: Select an answer

20. A CNC programmer is setting up stock for a model. After a stock selection method is complete, which of the following is the next step?

Orient the Work Coordinate System
Specify the model to be used in the setup
Choose the Work Coordinate System location
Check the stock against workholding equipment

Error: Select an answer

21. A bullnose is machining a part and making excessive chatter. Which of the following might this indicate?

Excessive chip load
The tool is leaving too much stock behind
Stringy chips in the drill
The tool is hitting the vise jaw

Error: Select an answer

22. A CNC programmer wishes to see if the toolpaths applied will leave gouges in a machined part. Which of the following Colorization options allows for this to be shown?

Comparison in simulation
Tool in simulation
Model in simulation
Operation in simulation

Error: Select an answer

23. A Scallop toolpath is applied to a part. During simulation, the toolholder for the toolpath collides with the part. How can this be automatically mitigated?

Edit the tool and change its length below the holder
Enable Detect tool length
Edit the tool and add a custom shaft segment
Increase the flute length

Error: Select an answer

24. A CNC programmer needs to position a part within a digital vice. How can the part be positioned parametrically?

Create a rigid group.
Use the Joint command.
Use the Move command with the Point-to-point option.
Use the Align command.

Error: Select an answer

25. A CNC programmer has several toolpaths applied to a part, but only needs to review the adaptive toolpath. How can this be achieved?

Choose the proceeding toolpaths and adaptive from the browser and then configure the Set Mode to All toolpath
Choose the proceeding toolpaths and adaptive from the browser and then configure the Set Mode to Tail
Choose the adaptive toolpath from the browser and then configure the Set Mode to All toolpath
Choose the setup from the browser and then configure the Set Mode to All toolpath

Error: Select an answer

26. A CNC programmer wishes to inspect the Z location of a tool during a specific toolpath operation at a specific time in the operation. Which of the following allows for this?

Enabling the show points option
Using the Simulation Player to slow simulation and reviewing the Simulation dialog
Watching the Statistics tab while the tool runs
Setting the simulation Colorization to Comparison

Error: Select an answer

27. A CNC programmer wishes to create a toolpath with a maximum stepover that is equal to 20% of the tool diameter. How can this occur?

Create a template with a stored stepover value
Enable Stock to Leave
Edit the Optimal Load expression
Manually calculate 20% of the tool diameter

Error: Select an answer

28. When you wish to quickly apply appropriate toolholders, which of the following can be effective?

Import a solid model of the holder from the vendor’s website.
Create a holder while creating the tool in the library.
Create a toolholder library according to your personal machine configurations.
Import a DXF file of the toolholder profile and revolve the profile as a form tool.

Error: Select an answer

29. A toolpath currently has a maximum roughing stepdown of .75". Which of the following would smooth the rough steps?

Order by area
A smaller Fine Stepup value
A smaller Fine Stepdown value
Flat area detection

Error: Select an answer

30. A CNC programmer needs to machine several parts and is concerned about the machine and tools incurring wear and tear. How can the engineer reduce wear and tear of the machine?

Use a ball mill to rough the part
Use 2D Pocket with a large stepover and small depth of cut
Configure options for an Adaptive Clearing Toolpath
Use 2D Contour with a large depth of cut and stepover

Error: Select an answer

31. A CNC programmer is machining a part and needs to ensure that all stock is removed, even the stock left from tool deflection. Which of the following options can be enabled to achieve this?

Repeat Finishing Pass
Increase the finishing pass feedrate
Use a negative stock to leave value
Use a conventional pass for the finishing pass

Error: Select an answer

32. A CNC programmer needs to review the machining time and machining distance of a program. Which of the following displays that information?

Display tab in the Simulation dialog
Statistics tab in the Simulation dialog
Info tab in the Simulation dialog
Next to the setup in the browser

Error: Select an answer

33. A part needs a 2D contouring toolpath applied only to certain edges. Which of the following methods would be effective?

Use an open chain machining boundary
Create a surface patch and set the surface patch as a model body to block the tool.
Use Avoid Surfaces to exclude the areas where the toolpath should not go
Create a sketch to contain the toolpath

Error: Select an answer

34. A CNC programmer is configuring a probe to help reset a work coordinate system. If they wanted to use a different probe for this operation, where could they find the option to do so?

Right click on the probe operation and select edit tool
The probe mode on the geometry tab
The select tool option on the tool tab
The cycle type on the linking tab

Error: Select an answer

35. A part is being positioned within a vice. Which of the following is the correct configuration?

Bottom of stock above top of vise jaws.
Bottom of part resting directly on vise jaws.
Bottom of bard below vise jaws.
Stock material left within the vice jaws, with the part above the vice jaws.

Error: Select an answer

36. A part needs to be machined more efficiently. Which of the following would reduce movements in the Z-axis?

Enable a minimum retraction policy
Increase clearance height
Increase retract height
Increase rapid feed rate

Error: Select an answer

37. A model has several pockets that must be deleted. Which of the following is an efficient way to delete pockets?

Use a crossing selection to only delete those features.
Use a window selection to only delete those features.
Click each face to be deleted while holding the Shift key.
Click each face to be deleted while holding the enter key.

Error: Select an answer

38. When machining complex parts, which of the following is the benefit of creating a digital twin of the machining environment?

Stock will be removed at a faster rate.
The WCS is created automatically.
The ability to determine the appropriate fixturing method and ensure collision avoidance.
The machining times will be more accurate.

Error: Select an answer

39. A CNC programmer is preparing the tools to be used in the library. The sample library includes a tool that could be used, but the diameter is inaccurate. Which of the following could be done?

A new tool should be created in the desired library.
The sample tool can be duplicated and modified.
The tool should be derived into the desired library.
The tool could be modified in the sample library.

Error: Select an answer

40. In order to accurately verify stock removal and toolpath features that do not exist on the model, which of the following should occur?

Set Colorization to Model
Set Colorization to Operation
Model visibility should be toggled off
Set Colorization to Comparison

Error: Select an answer

41. A part has a 3D adaptive toolpath, but it does not reach certain parts. Which of the following can be applied to clear the remaining stock?

Use a smaller tool and enable Continue machining from previous setup
Use a smaller tool and specify a stock contour
Use a smaller tool and contain the toolpath using Slope
Use a smaller tool with rest machining from previous operations

Error: Select an answer

42. A CNC programmer is preparing a tool library for a team project. Which of the following methods lets the library be shared to the team?

Save the library to the cloud.
Save the library to a tools project that is accessible by the entire team.
Sync the tool library using a third-party cloud sharing system.
Save the library to a read-only project file.

Error: Select an answer

43. A CNC programmer wants to tool a part, but they need for the toolpath to ignore interior slotting. How can this be accomplished in the most efficient way?

Delete the faces of the slot
Use Avoid Surfaces to select the faces of the slot that are to be excluded
Patch the slots and apply an adaptive toolpath

Error: Select an answer

44. A CNC programmer is creating a new CAM setup. How can they define the coordinate system used by toolpaths??

By creating a work point at the desired location that will be automatically selected in the setup.
By moving the model to the design origin.
By importing a vise that has the Work Coordinate System preconfigured.
By configuring the Work Coordinate System.

Error: Select an answer

45. A CNC programmer needs to configure how the machine enters, exists, and transitions between toolpaths. How is this accomplished?

Tool containment boundary
Tool heights options
Passes options
Linking options

Error: Select an answer

Error: 45/45 questions unanswered

45/45 questions unanswered