ENGINEER.48

  Today's note is about "List of Thread Effective Diameter, Thread Height, Pitch, and Lead Angle". The JIS standard for metric screw nominal size is easy to find on the web, but the list of screw effective diameter, thread height, pitch, and lead angle is not so easy to ...

Today's memo is about "the concept of allowable rotational speed and maximum rotational speed of bearings. What is the allowable rotational speed of a bearing? The "allowable rotational speed" of a bearing is the limit rotational speed at which it can be operated without generating heat above the limit ...

  Here is a note on the difference between a rolling ball screw and a precision ball screw, which is an option when using a ball screw. If you search the Internet for the difference between a thread rolling ball screw and a precision ball screw, you will find that the surface ...

Today's note on "What is a submicron? Today, I would like to write a memo about "What is Submicron and Explanation of Submicron Order". Submicron I have been working on an optical design project for a while now, and I have been hearing from customers that the term "submicron" or "submicron order" is ...

  Today's note is about the 39 technical characteristics in TRIZ. The TRIZ method 39 Technical Characteristics is a definition of technical characteristics that can be used in the "Engineering Contradiction Resolution Matrix.

Today's note is about "MS (Margin of Safety)" in design. Sometimes a client asks for a "MS (Margin of Safety)" for a system to be designed.　The interpretation and ...

Today, I would like to make a note about "QT and AT level examinations" which are often heard in the space industry. What are QT and AT levels? QT = Qualification Test English: Qualification Test Meaning: Qualification Test (in general, QT level ...

  Here are some notes on vibration testing.　I will note down what I learned when I performed vibration testing and information about vibration. What is a Vibration Test Vibration test is a test in which a ...

  The following is a note on magnetic annealing, a process classified as annealing (tempering). Magnetic annealing is said to improve the performance of magnetic materials.　What exactly is magnetic annealing?　Today's topic is ...

  This section describes how to calculate inertia (moment of inertia), an unavoidable factor in machine design, and notes how to determine the correct driving force. In the design of automatic machines, it is important to know ...