Choosing Your Carbide Grade: A Guide | Modern Machine Shop
WEBOct 30, 2021 · BB64 — PVD grades for nickel-based alloys. BB23 — CVD grades for milling cast iron. NN — Hardness Level: The last two digits, in most cases, reflect the hardness level of the different grades in a series. The number usually ranges from 05 to 45 according to the same system explained above about the grade charts.
Choosing The Right Grinding Wheel | Modern Machine Shop
WEBDec 15, 2000 · Usually vitrified wheels are used at speeds less than 6,500 surface feet per minute. At higher speeds, the vitrified bond may break. Organic bond wheels are generally the choice between 6,500 and 9,500 surface feet per minute. Working at higher speeds usually requires specially designed wheels for high speed grinding.
Cutting Tools | Modern Machine Shop
WEBOct 2, 2024 · Cutting Tools. The broad category of “cutting tools” includes all of the consumable tooling involved in milling, drilling, turning and other lathe and machining center operations. Drills, end mills, taps, reamers and inserts are all included here. Consumable tooling used on certain other types of machine tools is included here as well.
How to Correctly Measure Surface Finish | Modern Machine Shop
WEBDec 21, 2021 · When measuring surface roughness, the first step is to filter out the waviness component from the roughness component. This is done by breaking the total measuring length of the surface finish measuring stroke into small segments, called cutoff length. Typically, the default cutoff length is set at …
Properly Reading Dial Indicators | Modern Machine Shop
WEBMay 6, 2021 · Properly Reading Dial Indicators. Dial indicators provide useful readings about tolerance ranges at a glance — but new users need to know how to set up these indicators before using them. Dial indicators have been around since the early 1900s, and, while digital indicators may be gathering more attention recently, dial indicators are unlikely ...
Machining 101: What is Electrical Discharge Machining?
WEBJul 10, 2021 · Photo Credit: Adam Wysuph, MC Machinery. Electrical discharge machining, or EDM, is a non-contact process that can machine parts regardless of their hardness. It involves placing an electrode or wire and an electrically conductive workpiece into a circulating dielectric fluid. The fluid acts as an insulator until a specific spark gap and ...
Measurement Tools for Machining | Modern Machine Shop
WEBNov 17, 2023 · Tips for Fine-Tuning RPM. 13 Sep 2024. A Personal IMTS Retrospective. Measurement Tools for Machining. Measurement tools are used to verify that a part’s dimensions conform to required tolerances. They include calipers, micrometers, gages, CMMs and profilometers. Inspection and Measurement.
How To Passivate Stainless Steel Parts | Modern Machine Shop
WEBOct 1, 2003 · This method of passivation can be accomplished in less than 2 hours. Here is the step-by-step procedure: After degreasing, soak the parts for 30 minutes in a 5 percent solution of sodium hydroxide at 160°F to 180°F (71°C to 82°C). Then rinse the part thoroughly in water.
Electrical Discharge Machining (EDM) | Modern Machine Shop
WEBJul 10, 2021 · Electrical discharge machining, or EDM, is a non-contact process that can machine parts regardless of their hardness. It involves placing an electrode or wire and an electrically conductive workpiece into a circulating dielectric fluid. The fluid acts as an insulator until a specific spark gap and voltage ionizes it and enables a spark to ...
Workholding | Modern Machine Shop
WEBAug 16, 2017 · Workholding. Workholding refers to any device that is used to a secure a workpiece against the forces of machining. The most basic workholding device is a simple clamp, but workholding can also involve complex fixtures that are custom-built for particular parts. Other common workholding devices include vises …