CNC Threading and Machining Practice Test

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• In CAD/CAM, which feature stores part design information?
• Which ID operation is used to create a smooth finish on a workpiece interior?
• Which type of geometric model uses lines to represent the dimensions of a part?
• Indicates movements on multiple axes?
• If the major diameter is 0.90 in and the thread depth is 0.05 in, what is the undercut finish diameter?
• Prepared based on part geometry and data in CAD is described by which term?
• Which coding scheme is used to issue instructions to CNC machines in textual form?
• What should the programmer determine before recording the sequence of cutting operations?
• Which term communicates the feed rate of a cutting operation in a part program?
• Which term refers to the Vernier scale graduation used for reading the main scale on a micrometer?
• Which feedback device uses light to track the rotation of the ballscrew?
• The forward-and-backward movement of the cross slide aligns with which axis on the engine lathe?
• Engine lathe setup includes which of the following components?
• Which cutting variable remains constant during turning as the workpiece diameter decreases in size?
• Which unit describes feed rate as movement per spindle revolution?
• Contents of a change block typically include which of the following?
• What feed ratio results when the cross slide moves the tool the same distance as the cross slide feed dial?
• What term describes the last measurement value recorded on a dial caliper?
• In the Unified thread example, what does the value 0.05 in represent?
• How is the accuracy rating of NIST gage blocks described in the material?
• Removes a thin slice of a part and rotates it ninety degrees.
• Which term defines the data standard named in full as the Standard for the Exchange of Product Model Data?
• On a CNC machine, which axis is located parallel to the spindle?
• When turning between centers, which tailstock accessory is typically used?
• CAM stands for which concept?
• What is the primary difference between a horizontal CNC mill and a vertical CNC mill?
• What CNC technology monitors machine functions in real time?
• What is the purpose of a center line on a blueprint?
• What type of view presents two-dimensional drawings of each side of a part?
• What is the purpose of the flange on a toolholder?
• Component of a CNC mill that reads part programs to direct machine movements.
• Which programming language uses textual commands?
• Which term denotes higher precision requirements in drawings?
• A physical part drawing that is printed on paper is known as?
• When finishing a hole by reaming, how much material should remain?
• Which axis is associated with the cross slide's movement when preparing a turning operation?
• The phrase 'Provide auxiliary, non-crucial information about the part' describes which blueprint concept?
• Which of the following is a drawback of CNC machines?
• Which device provides feedback by using light to detect rotation, typically in a mechanical system?
• Which instrument is commonly associated with reading a vernier scale, as described in the material?
• Historically, what medium was used to input and store machining instructions for NC machines?
• Which operation would you perform to create a textured grip on a cylindrical surface?
• Which device is used to input data in a CNC system?
• Which term describes moving two or more axes in a coordinated fashion to produce a continuous path?
• What is the point where the three linear axes X, Y, and Z intersect in a Cartesian coordinate system?
• Which statement best describes the flange on a toolholder?
• For grooving on a lathe, which adjustment most improves surface finish?
• Which term describes the standards that dictate the language used by CNC machines and part programs?
• Which cutting tool do machinists most commonly use for turning operations on an engine lathe?
• Which machine is designed primarily for turning operations producing cylindrical shapes?
• Which term describes the rotational movement of a workpiece around the X axis?
• What results from positioning the cutting tool tip below the centerline for facing operations?
• How does an object line function in a blueprint?
• Which axis describes rotation around the X-axis?
• Starting a facing operation with a light pass helps establish what kind of surface?
• Before operating an engine lathe, what is the essential preparatory step the machinist must perform?
• What statement about part production on a mill is true?
• What controlled early NC machine movement?
• Explanation of a reference dimension
• Which CAD/CAM function creates route sheets that guide and organize steps in manufacturing parts?
• What is the first step a machinist must complete before operating an engine lathe?
• The full amount of time from the conception to completion of a part is called?
• Which tool type is associated with indexing to reveal a fresh edge for continued use?
• What device was used to store and input machining commands for the first NC machines?
• Which small dimension value is listed as 0.000001 in. in the material?
• Position that acts as the origin in each part program.
• Which coordinates are used by a CNC machine tool when there is an error in the third cutting tool position?
• Which handwheel does a lathe operator use to reach the finish depth during boring?
• Which micrometer type includes a stopping plate?
• Prior to conventional drilling on an engine lathe, to what depth should the center drill be fed?
• Which is cut from a workpiece?
• Which of the following is an advantage of CNC systems?
• For turning operations on an engine lathe, which cutting tool configuration is most commonly used?
• Which carriage control is used to adjust tool travel perpendicular to the workpiece axis?
• What measurement task is a micrometer primarily used for?
• What type of projection is used to show multiple views of a part?
• Which method of applying cutting fluid involves letting the fluid drip onto the work area instead of flooding or spraying?
• Which type of cutter is flat with cutting teeth surrounding the tool?
• Which spindle nose type can cause the chuck to unscrew and fly off when the spindle direction is reversed?
• Which concept describes the CNC feature for entering tool offsets?
• Which line type is used to show the visible boundary of an object in a blueprint?
• Which of the following is an important factor for drilling operations?
• Which statement explains why a workshift offset would be identical for all tools?
• What statement about blueprints is true?
• To cut an internal thread that has a nominal size of 0.875 in and 10 TPI, what is the minor diameter of the hole that must be drilled?
• Which is the function of leadscrew?
• Which component of a part program signals the essential function of a word?
• What is the term for the series of movements made by a single cutting tool?
• Which component on a lathe is associated with moving the cutting tool into the workpiece via a screw thread?
• Which code describes the operations a machine should perform in a part program?
• Which coordinate system is used to represent positions in three dimensions for polar-like mathematics?
• What part of a CNC system reads and executes the machining instructions in the part program?
• Which component in a CNC milling setup provides the surface to clamp and move the workpiece?
• What does a machinist use to manually check alignment of the tool tip to the spindle?
• What is the difference between an auxiliary and a section view?
• What measurement describes a Unified thread's largest diameter?
• In thread geometry, which measurement is used to describe the outer boundary of the external thread?
• Which OD operation cuts material from the end of a workpiece?
• For turning operations using centers, what type of center is typically installed in the tailstock?
• To create the proper undercut diameter, how much material should be removed from the workpiece?
• If the cross slide's axial movement equals the cross-slide feed dial setting, what is the resulting feed ratio?
• Which workholding device provides additional support for long workpieces?
• What is the role of tolerance in engineering fits?
• Which cutting variable indicates how quickly the cutting tool moves along the surface of the workpiece?
• In a CAD/CAM system, CAD/CAM data is stored in a storage medium known as what?
• Which concept refers to software that assists in automatically generating CNC programs rather than manual coding?
• Which blueprint element conveys the size information for features on the drawing?
• Which term describes the Vernier scale graduation used for reading main-scale measurements?
• Which type of line is indicated in the drawing?
• What code specifies machine-level actions such as tool changes and spindle control in a part program?
• In a part program, what is the designated origin for coordinates?
• Semi-automatic tool compensation is a CNC feature for what?
• What term represents the full sequence of instructions that is executed by a CNC machine to manufacture a part?
• Which is a unit of measurement for feed rate?
• Which statement best describes the center line on a blueprint?
• The value 0.01 in. (0.254 mm) is given for a measurement. What two units are shown?
• What engine lathe workholding device uses split, tapered sleeves to grip a workpiece?
• Which operation performed on the lathe is an inner diameter (ID) operation?
• In CNC programming, what best describes tool length?
• How much material should be left on the workpiece for reaming a hole to its finished size?
• Which component is responsible for interpreting coded data and issuing axis movement commands?
• Which CNC machine uses force to create bends or holes in sheet metal?
• In a vernier micrometer, what is the purpose of the Vernier scale?
• Which component interprets numerical data and controls movement in CNC machines?
• Which lathe part carries a graduated rule for measuring the axial movement of the tool into the workpiece?
• What can operators do to ensure a straight cut during parting off operations on the lathe?
• What term describes words written in numerical data to control tool motion?
• The major diameter is defined as the distance between which features on an external thread?
• Which code controls the motion mode and machine operations in a CNC program?
• Which component of the NC system interprets the program and coordinates motion?
• Where is the gage line located on a CNC mill?
• What cutting variable describes the rate that the cutting tool moves during one rotation of the spindle?
• Which device does a machine operator use to set the depth of cut for turning operations?
• What does a thread micrometer measure?
• Which gauge is used to inspect external cylindrical features such as a shaft?
• What does the term "machine zero" refer to in CNC machining?
• Which instrument is noted for having a maximum resolution of 0.01 in.?
• Which activity helps a technician improve accuracy when using measuring instruments?
• What type of readout devices appear on an engine lathe's carriage and cross-slide handwheels?
• Which operation would be used to create an internal diameter on a workpiece?
• What system uses axes to locate an object in three-dimensional space?
• Which data format is primarily used to program tool motion in CNC systems?
• For outside diameter turning on a lathe, which axis must be touched off and zeroed?
• Which toolholder holds up to four cutting tools for use in a single operation?
• What is the maximum length of workpiece that can be mounted on a particular lathe?
• Which of the following statements about dimensions on a blueprint is true?
• What type of misalignment occurs when only one end of a workpiece is concentric to the spindle?
• Which engine lathe component moves side to side along the ways?
• Which item describes a physical drawing used to communicate specifications to fabricators?
• The overall plan that specifies how the tool moves to produce a part is called what?
• Which set of terms states that Z, Y, and X form right angles with each other?
• In an open-loop CNC control system, which component generates movement pulses to drive the axes?
• Steel rules are most suitable for measuring which of the following?
• Which cutting tool can be indexed to reveal a fresh cutting edge?
• Which term refers to the translation format used for CAD data interchange?
• Which term describes the preparatory step of transforming a blueprint for use in CNC milling?
• Which lathe type is typically considered the simplest form for manual turning operations?
• Which view is used when the true shape of a feature inclined to the principal planes is needed?
• Which coordinate system is a three-dimensional representation of the polar coordinate system?
• Which statement about taper turning on an engine lathe is true?
• What is the function of a quick-change gearbox on an engine lathe?
• After setting the depth of cut, which handwheel does a machinist use to feed a turning tool along the workpiece?
• Cutter radius compensation (CRC) moves a tool by affecting which aspect of the tool?
• What is a function of the toolchanger?
• Which term describes a machine that integrates multiple machining operations with automatic tool changes controlled by NC?
• To compensate for varying tool sizes describes the purpose of which offset?
• What is the listed resolution for height gauges when using granite surface plates?
• Indicates direction to the right and down on a vertical machining center.
• What does a machinist use to set the direction the cutting tool moves relative to the workpiece?
• Which statement correctly identifies early NC machine control?
• Testing the program before part production begins.
• Which term specifies one of a varied assortment of instructions in a part program?
• Which coordinate system categorizes positions using three perpendicular axes?
• Which lathe component has a graduated rule for measuring the movement of a cutting tool into a workpiece?
• In a 3D Cartesian system, what is the name of the point where X, Y, and Z axes intersect?
• Which elements are stresses, strains, heat distribution, and tolerances?
• Which machine type changes axis directions due to the worktable moving rather than the cutting tool?
• What type of line would be used to shorten drawings for extremely long parts?
• Which control system uses a feedback device to verify motion?
• Which control is used to feed the turning tool along the axis of the workpiece during turning operations?
• DXF is used as what type of format for CAD data interchange?
• Which term communicates the location for tool movement along an axis to a CNC machine?
• Which term is used to describe the storage medium that holds CAD/CAM data?
• Which interface is commonly used to input data and control parameters on a CNC system?
• Directs the tool to cut at each end position.
• The development of CAD/CAM software made it possible to design and manufacture a part using what?
• Which CNC mill component supports and moves the workpiece?
• Which term refers to software that helps to generate a part program?
• Which diameter describes the distance between crests of an external thread?
• Which statement best describes threading on a manual lathe?
• Which holemaking operation uses a multi-point tool to machine a hole?
• Turning operations that remove large amounts of material typically use which setting on the engine lathe?
• Which tool is used on a manual lathe to cut threads?
• What fluid application method involves a machinist using a brush to manually apply fluid?
• The offset for tool length is described as being oriented relative to the programmed path in which way?
• During lathe parting off, which component should be secured to maintain straight cuts?
• In an engine lathe setup, which component is primarily used to position the tool and workpiece before turning?
• The phrase 'Indication of feature importance in a blueprint' refers to providing what kind of information about the part?
• Which are common methods of inputting information into CNC machines?
• For a Unified thread with depth 0.05 in and major diameter 0.90 in, what is the undercut finish diameter?
• Direct tool motion along three axes is a characteristic of which type of CNC system?
• During CNC machining, which parts are the primary moving elements?
• Type of milling cutter that is flat with cutting teeth surrounding the tool.
• What included angle do V-shaped symmetrical threads have?
• What part of an NC machine transmits the instructions to the drive system and machine tool through a hard-wired electrical circuit?
• Which lathe feature provides extra support for long workpieces?
• A numerical value that repositions a tool to adjust for any variety of factors describes which CNC concept?
• Which holemaking operation uses a multi-point tool to machine a new hole into a workpiece?
• What does using a center gage during setup for external threading operations verify?
• What term describes the smallest unit of measurement an instrument can display?
• Which milling operation removes material from the workpiece using the side of the tool?
• What term describes when multiple axes move simultaneously to follow a curved or complex path?
• When planning drilling operations, which factor is critical because it influences subsequent holemaking steps?
• When positioning axes in a CNC system, which coordinate set remains constant regardless of movement commands?
• What is the sequence of commands necessary to machine a part called?
• Which type of cutting tool has an expensive cutting material fused to a less expensive material?
• In CNC programming, which term designates the numeric block number at the start of a program line?
• Threading operations typically use a V-shaped form tool with what cutting edge angle?
• The carriage moves a lathe's cutting tool from side to side along what axis?
• In thread terminology, which diameter is the largest for a Unified thread?
• During internal threading, what should the operator do once the required threaded length in the hole is reached?
• Which CNC mill workholding device has one fixed and one moveable jaw to hold simple workpieces?
• Which standard allows CAD/CAM data to be exchanged between systems in different countries?
• The cutting tool moves vertically along which axis?
• Reading the vernier scale on a micrometer is associated with which property in the material?
• A ring gauge is typically used to inspect which part feature?
• Manual drafting (drawing) of parts is considered outdated because it has been replaced by which technology?
• What does making a light pass to begin facing operations achieve?
• Which dial is used to set the depth of cut for external threading on the engine lathe?
• Which code provides the reference name or title for a program block in a part program?
• Which engine lathe component precisely sets the leadscrew and carriage positions relative to the workpiece?
• Which operation is performed to produce a smooth interior bore after drilling?
• What action is performed by running a CNC program without manufacturing a part to verify logic?
• In what section of the blueprint is the general scale listed for the entire drawing?
• What type of line helps a viewer visualize an imagined slice in a part where material has been cut out?
• In manufacturing metrology, what term describes the process used to determine whether a tool is within specification as it wears?
• What is the formula to obtain the undercut finish diameter for a Unified thread given the major diameter D and thread depth d?
• All tools in the machine share the same spindle and program zero; this implies which offset-related concept?
• The V-shaped form tool used in threading has what standard cutting edge angle?
• What type of CNC machine brings tools into contact with a rotating workpiece?
• To improve surface finish for a grooving operation on the lathe, which adjustment is most effective?
• Which toolholding option is commonly designed to hold up to four cutting tools in a single operation?
• Which is the most basic of the manual lathes?
• The difference between a measurement reading and the actual dimension is called?
• Which concept allows any CNC machine to receive the same information from different CAM software programs?
• Which axis is typically aligned parallel to the spindle on many CNC milling setups?
• Which term indicates the location of the gage line on a CNC mill?
• The notes reference a small dimension value of 0.000001 in. Which unit is this measurement expressed in?
• What is the purpose of a CNC machining center?
• What should a part programmer do with a blueprint before using it to create a part on a CNC mill?
• Which term refers to the total time required to complete a part from start to finish?
• What determines the maximum resolution of a slide caliper?
• Describes up-and-down movement?
• Which function in CAD/CAM is used to organize manufacturing steps into routings and documents?