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CAM for Multi-Axis Milling Expert Certification Prep Practice Test

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44 questions

A tool has enough length below the holder and enough required flute length to machine the side of a part, however the ER collet holder being used collides with the stock that will be machined away. How could the collision best be resolved?

(Select one)

Change the order of operations to remove the stock causing the collision first.
Use a shrink fit holder with longer projection.
Use a hydraulic holder.
Switch to a smaller ER collet holder.

Select an answer

Using a multi-axis steep and shallow toolpath, a point above the model surface is used as a guide to orient a tool. What control is used to specify this point?

(Select one)

From curve
From Point
To curve
To point

Select an answer

A part has several features at various angles next to steep, sloped faces. What toolpath would allow for an automatic method of machining those faces while avoiding collisions?

(Select one)

Scallop with Automatic Collision detection enabled.
Multi-axis contour with specified lead and lean angles.
Steep and shallow with Automatic Collision detection enabled.
Steep and shallow with From Point enabled.

Select an answer

A programmer has programmed a part without adding a vise or fixturing to the model. There will be very little clearance between the vise jaws and tool as material is roughed around the perimeter of the part. After the stock is set up in the vise, how could the programmer verify that there is enough clearance between the tool and the vise jaw before running the program?

(Select one)

Simulate the toolpath used in the roughing operation and locate the minimum Z level on the Display tab.
Simulate the toolpath while choosing the desired spot on the toolpath and locating the position location on the Info tab.
Generating a setup sheet and locating the minimum Z level for use in the roughing operation.
Simulate the toolpath used in the roughing operation and locate the minimum Z level on the Statistics tab.

Select an answer

A part needs to be held using very little bottom stock. What method would provide the most secure grip?

(Select one)

Steel jaws and parallels
Hydraulic vise jaws
Hardened serrated jaws
Dovetail cut into stock

Select an answer

A programmer wants to quickly understand what stock remains after applying each toolpath to a part. What method would be used to achieve this?

(Select one)

Enable in-process stock display.
Simulate the setup after each operation starting from the last operation.
Export and import the stock model after applying each operation for visualization.
Simulate the setup after each operation.

Select an answer

A part has a deep pocket with sloped faces. What holder combination would aid in machining the feature?

(Select one)

Using a Shrinkfit tool with long projection.
Using a large ER collet tool holder with long projection.
Having a tool with a large distance beneath the holder.
Using a small ER collet tool holder with short projection.

Select an answer

A custom tool needs to be set without a model feature to reference to set the orientation. What method could be used to quicky create the tool orientation. (Select two).

Select up to 2

Create a custom named view in the manufacture workspace to reference.
Construct the required work geometry in the design workspace.
Create a custom named view in the model workspace to reference.
Create the tool orientation from the current camera view.

Select an answer

A programmer is using a dovetail vise with a riser to machine a part. When creating a digital replica of this assembly, which of the following ensures the components do not shift?

(Select one)

Using the Move/Copy command
Adjusting toolholding
Applying a joint
Orienting the work coordinate system

Select an answer

To help achieve better access to all sides of a part, what type of vise should be used?

(Select one)

Self Centering
Soft Jaws
Dual Station
Fixed Jaw

Select an answer

A supplied print calls out tight positional tolerances located on different faces required for a part . How would a 5-axis machine aid in the manufacture of the part?

(Select one)

A probing routine could be used to accurately locate the WCS for each required setup.
A surface inspection report could be created to verify the location of the features.
A probe geometry routine could be used to bring parts into size tolerance.
All of the critical features can be machined in the same setup to improve accuracy.

Select an answer

For a machine that does not support dynamic work offsets, where would the WCS need to be set for a 5-axis toolpath?

(Select one)

On the top face of the stock body, at the center of the face.
On the bottom face of the stock body, at the center of the face.
Set below the part where the trunnion rotation axes intersect.
At the center of the stock body.

Select an answer

Where should the WCS be located on a 5-axis vertical machining center that does not support dynamic work offset?

(Select one)

At the center of the vise on the top of the vise jaws.
On the top of the machine table through the center of axis rotation.
At the axis intersection of tilt and rotation.
At the center of the vise on the bottom of the vise jaws.

Select an answer

How can a partial chain of geometry be selected for an operation?

(Select one)

Hold the SHIFT key while selecting the initial geometry selection twice.
Hold the ALT key while selecting the initial geometry selection twice.
Click the start and end of geometry twice.

Select an answer

A 3D contour toolpath has been applied to part. During the stock simulation, a collision is observed between the tool and the vertical sloped wall of the part. How can the collision be resolved?

(Select one)

Switch to a hydraulic tool holder.
Use a tool with increased tool length below the holder.
Use a tool holder with a longer projection.
Specify a Lead and Lean angle to avoid the collision.

Select an answer

A feature on a part has a tight tolerance specified on the drawing for the model. How could the feature be accurately machined to size? (Select two)

Select up to 2

Add an optional stop to allow the operator to measure the feature with precision measuring tools.
Apply cutter compensation to the operation.
Use a surface inspection routine on the feature at the end of the program.
Use a probe geometry routine on the feature in the program.

Select an answer

Once a custom tool orientation has been specified, it can be modified by which of the following?

(Select one)

Adjusting the Tilt and Turn values located next to the triad in the canvas.
Selecting a work feature to set the Tilt and Turn.
Adjusting the Tilt and Turn values in the dialog.
Referencing other features on the model to adjust the Tilt and Turn.

Select an answer

While creating a setup, the fixture checkbox is enabled and bodies and components that represent fixtures are selected. This will result in:

(Select one)

The tool will turn red to indicate a collision for 3D toolpaths only.
The tool will turn red to indicate a collision for 2D and 3D toolpaths.
Automatic collision avoidance of the fixtures for 2D toolpaths.
Automatic collision avoidance of the fixtures for 3D toolpaths.

Select an answer

During the simulation of a part, a collision occurs between the shaft stock because the tool does not have enough flute length. How would this issue be corrected in the program?

(Select one)

Enabling the shaft and holder using the Detect Tool Length option.
Enabling the shaft and holder using the Detect Tool Length option with increased shaft clearance.
Editing the tool and manually changing the flute length.
Enabling the shaft and holder using the Trim Toolpath option.

Select an answer

A custom tool orientation can be defined from a non-planar surface using what method?

(Select one)

Choosing a surface normal and X axis.
choosing a surface normal and Z axis.
Choosing the model orientation and specifying Tilt and Turn values.
Choosing the camera view and specifying Tilt and Turn values.

Select an answer

After an NC program has been converted to G-code, the G-code is viewed in an editor. It is discovered that the axes are rotating in the wrong direction. How should this problem be corrected?

(Select one)

Use the G-code editor to change the axis rotation by adding or removing the negative symbol in the code.
Have a custom post-processor created the reverses the incorrect axis output.
Change the tool orientation for the operation in the program.
Change the direction of the axes in the post-processor Properties field.

Select an answer

A programmer chooses a Steep and Shallow toolpath and selects a boundary to apply the toolpath to. The tool containment is set to tool outside boundary. By default, how far outside the boundary is the tool allowed to go?

(Select one)

100% of the tool diameter outside of the boundary.
As far as required to allow the tool to fully machine the geometry in the boundary.
200% of the tool diameter outside of the boundary.
25% of the tool diameter outside of the boundary.

Select an answer

A small part needs to be held securely while allowing access to all 5 sides of the part. What method could best achieve this?

(Select one)

Dovetail fixture bolted to a riser
Self Centering vise bolted to the table
Dovetail fixture bolted to the table
Self Centering vise bolted to a riser

Select an answer

How could a tool library quickly be created without having to manually enter the tool specifications?

(Select one)

If available, input the ISO code for the tool.
If available, import the 2D profile of the tool from the vendor’s website.
If available, download the Fusion 360 specific library from the vendor’s website.
If available, import a solid model of the tool from the vendor’s website.

Select an answer

An NC program for a part has been created, and the operations are then posted, but during the posting process, an error prevents the code from being exported. How could the programmer troubleshoot the error?

(Select one)

View the error log that was generated in the posting process.
View the output code in a G-code editor to find out where the posted code stopped.
Run a stock simulation to verify the correct toolpath motion.
Ensure that a WCS offset of 1 or higher has been specified in the setup.

Select an answer

What is the correct method to create a tool holder?

(Select one)

Download a 3D model of the tool holder to import into the library.
Create the holder by inputting the ISO code for the holder.
Download a DXF profile of the holder and revolve to create holder geometry.
Create a holder by specifying segment heights and diameters.

Select an answer

While running a part using a 4th-axis rotary, the operator observes that the part indexes the wrong direction. How would this issue be corrected?

(Select one)

Reversing the A-axis rotary in the post-process properties.
Changing the tool orientation to reverse the Y-axis in the toolpath.
Enabling Dynamic Work Offsets in the post-process properties.
Enabling Tool Center Point Control in the post-process properties.

Select an answer

A programmer is adding toolpaths to a complex part requiring many toolpaths to remove the stock. The operator wants to visualize the stock after each operation quickly. What method should the programmer use to do this?

(Select one)

Perform a full stock simulation from the last operation created
Perform a full stock simulation selecting all operations and starting from the last toolpath created
Enable in-process stock calculation.
Perform a full stock simulation after each toolpath is applied

Select an answer

A programmer is applying a Steep and Shallow toolpath to a part using a 5-axis vertical mill. Which of the following options would be used to automatically prevent collisions with the holder?

(Select one)

From Point
Collision avoidance
To point
Tool orientation

Select an answer

What is one of the benefits of using a 5-axis machine over a 3-axis machine when planning the tools and holders that will be used to manufacture a part?

(Select one)

Ball mills can be used to machine sloped surfaces for a better surface finish.
Tools can be shortened to allow for better access to features on a part using multi-axis.
Longer tools can be used for extended reach to access areas on the part.
The tools can have longer flute lengths and stickouts.

Select an answer

What command would be used to parametrically locate one component to a second component?

(Select one)

Joint
Move
Joint Origin
Align

Select an answer

A programmer wants to verify the code output before running a part on the machine. How would this be done?

(Select one)

Running a machine simulation from within the software.
Running a full stock simulation while comparing toolpath motion to the setup WCS.
Opening the code in an editor to ensure the proper axes were output.
Verifying the axes on the position field on the Simulation Info tab.

Select an answer

A custom tool orientation can be created by selecting what entities?

(Select one)

A spherical feature
A circular face
A curved face
A work point

Select an answer

During the simulation of a part, a collision is detected between the part and holder. How could this be corrected by the software while still machining the entire part?

(Select one)

Enabling shaft and holder detection using the Detect Tool Length option.
Editing the tool used in the operation and increasing the length below the holder.
Editing the operation to change the tool with increased length below the holder.
Enabling shaft and holder detection using the Trim Toolpath option.

Select an answer

When creating a setup, where should the WCS be located to increase the speed of the setup on the machine?

(Select one)

on the bottom of the stock
on the top center of the vise jaws of a self-centering vise
on the zero-point workholding location
on the top left corner of the stock for each setup

Select an answer

A model has a 37-degree chamfer applied to the perimeter of the top face of the part. How should this feature be machined using a 5-axis vertical machining center?

(Select one)

Use a multi-axis swarf to cut the chamfer with the side of the tool.
Use a ballnose tool to create the chamfer with the radius of the tool.
Order a custom chamfer tool with the correct chamfer angle.
Use a bullnose tool to create the chamfer with the radius of the tool.

Select an answer

A relatively small part is being machined using a 5-axis vertical machining center. To access 5 faces of the part, how might the workholding need to be adjusted?

(Select one)

By using dovetail jaws to grip a precut dovetail in the stock.
By elevating the vise using a riser to create clearance.
By increasing the thickness of the stock used to manufacture the part.
By using taller parallels in a fixed jaw vise.

Select an answer

A CNC programmer needs to add a chamfer to a part that has been created at a non-standard angle of 37 degrees using a 5-axis vertical machining center. The programmer has chosen a swarf toolpath to create the chamfer. How would the programmer get the tool to cut below the bottom edge of the chamfer?

(Select one)

Specify a value in the tool offset field
Add an offset to the bottom height field
Specify a pass overlap value
Enable Minimize axial motion

Select an answer

A programmer is using a casting as the stock body to machine the final part. The castings are inconsistent and vary in stock size. What probing routine would verify that there is enough stock on the casting and would allow the coordinate system to be shifted to allow the entire part to be properly machined from the casting?

(Select one)

Probe WCS
Surface Inspection
Part Alignment
Probe Geometry

Select an answer

Using a multi-axis steep and shallow toolpath, a programmer wants to set the orientation of a tool to a point below the model surface. What option should be specified?

(Select one)

From Point
To point
To Curve
From curve

Select an answer

After applying a scallop toolpath and running a stock simulation, several collisions are detected between the stock and the bottom of the holder. How should the programmer proceed to fully machine the feature while automatically fixing any collisions?

(Select one)

Edit the tool and select a smaller diameter tool holder for the operation.
Enable shaft and holder detection with trimmed enabled.
Enable shaft and holder detection with detect tool length selected.
Edit the tool and increase the length below holder.

Select an answer

A deep pocket must be machined on a part that would require a long tool stickout. How could this feature be more efficiently machined?

(Select one)

Use two toolpaths with two different length tools to machine the top half and bottom half of the feature separately.
Trim the toolpath, keeping both sections of the toolpath and substituting a longer tool for the bottom half of the feature.
Trim the toolpath, keeping the inside of the boundary and substituting a longer tool for the bottom half of the feature.
Trim the toolpath, keeping the outside of the boundary and substituting a longer tool for the bottom half of the feature.

Select an answer

A programmer would like to machine a part and then compare the location of points on the machined part against the solid model. What probing routine would be used to do this?

(Select one)

Surface Inspection
Probe Geometry
Part Alignment
Probe WCS

Select an answer

A programmer has programmed a component. Upon loading the stock into the machine, setting the WCS, and pressing cycle start, the control returns an error message that a parameter of the code is out of range, indicating that the part is larger than the travel of the machine. How could this error be caught before posting the code to the machine?

(Select one)

By creating a machine and specifying the travel of each axis.
By measuring the size of the part to ensure the part is smaller than the axes travel limits.
By running a full stock simulation with axes travel limits added to the simulation.
By enabling in-process stock calculation with axes travel limits added to the simulation.

Select an answer

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