NIMS Test Questions and Answers: Machining Fundamentals, Exams of Innovation

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The safest way to remove chips from a lathe or milling machine is to use a: - ANSWER brush Small chips left out on the spindle nose of a lathe should be cleaned to avoid - ANSWER Run out on work holding devices Grease guns are used to insert grease into: - ANSWER Zerk fittings on machine tools To lubricate the ways of a lathe, the gibs of a Miller the cross slide of a grinder - ANSWER Use lubricant found in central lubricating systems ("one shots ") If a vertical mill table is loose and has side play, the best solution to alleviate side play is to: - ANSWER Tighten the taper gib adjustment A machinist wants to find the proper type of lubrication, schedule and recommended maintenance practices for the headstock of a lathe. The best source to find this information is: - ANSWER Preventative maintenance schedule and machine manual General maintenance information for machine tools and machine work area can be found: - ANSWER General Maintenance Manual Pinning refers to: - ANSWER Loading the file with metal chips

Files should be stored - ANSWER In a toolbox separated from each other The best way to clean the chips out of the file is to use - ANSWER file card What is the most common injury that may occur during a filing operation - ANSWER Being stabbed with the tang (file without a handle) The best lubricant to prevent wear and increase cutting efficiency for tapping common steels is - ANSWER Sulfur-based oil A reaming operation produces finish tears. The cause of the tears is: - ANSWER Insufficient stock allowance What is the gage block height for an angle of 9 degrees on a 10-inch sine plate? - ANSWER 1.5643 inches Which of the following combinations of a gage blocks (from an 81-block set) can be used to gage a length of 0.9528 inches - ANSWER 0.1008, 0.102, 0. The process of displacing air between gage blocks for accurate measurements is called - ANSWER wringing To check the height of multiple parts with gage blocks, a machinist would use a - ANSWER Dial indicator and digital height gage

Dial bore gages are used to measure: - ANSWER holes To indicate an angled surface and make that surface parallel to a surface plate, the machinist would use a - ANSWER Sine plate What sizes of gage pins would a machinist need for a dimension of 3/32 ± 1/64th inches for a go/no go gage setup (rounded to three places)? - ANSWER 0.110/0. A measure of dispersion that uses the largest and smallest measurements of a sampling is the - ANSWER range What is the range of the following sampling (0.345, 0.382, 0.353, 0.380, 0.377) - ANSWER 0. Which of the following is not found on an X-bar and R control chart - ANSWER Capability ratio The acronym MSDS means - ANSWER Material Safety Data Sheet Which of the following colors is not found on an HMIS label - ANSWER green The threshold limit value (tlv) is defined as - ANSWER The safe limit of unprotected exposure to a material

MSDS information on new chemicals and materials found in the workplace can be reviewed and discussed at - ANSWER Right to know seminars and classes and safety meetings The acronym for HMIS stands for - ANSWER Hazardous materials information system The acronym for the government agency that regulates safety - ANSWER OSHA Oily rags and wipes are stored in a red fireproof van with a lid to prevent - ANSWER Fires through spontaneous combustion The first course of action to take if a solid material becomes lodged in the eye is to

• ANSWER Pull the top lid over the bottom lid The first action to take with a bleeding wound is to - ANSWER Apply pressure to the wound The best technique for lifting is to - ANSWER Lift with the legs and keep the back straight When operating a lathe, long hair, dangling jewelry or loose clothes can - ANSWER Become caught in the lathe pulling the operator toward the machine Government safety regulation state that a person must wear a ___________ when working on material stored overhead using cranes or hoists - ANSWER hard hat

The print calls for a 0.375+/- 0.005 wide X 0.125 +/- 0.005 deep slot to be milled. The best procedure is to - ANSWER Use a 0.250 diameter end mill to a depth of 0.100 and then use a 0.375 diameter end mill at a depth of 0. The most accurate method for aligning a vise mounted on a vertical mill table is to

• ANSWER Use a dial indicator mounted on the quill or in a collet Reamers cutting oversize due to built up edges may be caused by - ANSWER Excessive stock allowance The clearance for a counterbore pilot should be - ANSWER 0.002 to 0. inches What is the allowance for a shaft measuring one inch in diameter with an RC sliding fit (in inches) - ANSWER - 0.003 in What does the acronym FN represent - ANSWER Force fit Continuous improvement and teamwork - ANSWER increase production and profitability Which of the following items is a tool for continuous improvement - ANSWER all of the above The process plan specifies tooling to be used by indicating - ANSWER Tooling diameters and sizes

What happens when the light field is broken while using a photoelectric presence sensing device - ANSWER The machine stops working due to safety protocols A sampling of parts is the number of - ANSWER The number of parts to be inspected in a sample What is the purpose of wringing gage blocks before stacking them - ANSWER To remove air from in between the gaging surfaces of the blocks Double cut files - ANSWER This file has two rows of teeth that crisscross each other. They are used for general purpose filing. In the AA or IADS Classification system for aluminum alloys the first digit groups the alloys by - ANSWER The principal alloying element which has been added to the aluminum alloy & is often used to describe the AA services One cause of tapped holes becoming too tight might be - ANSWER Tap wear Metal cuttings are considered a - ANSWER Hazard Which of the following steels has the lowest carbon content - ANSWER Low carbon steel