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ENGINEER.48

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Active mechanical designer / Mechanical design experience [20 years] I provide design know-how cultivated through practical experience and real information that is not found in textbooks and is useful in the field.

References for where to use flat washers

2025/11/16    

  Today's memo is about "Reference for where to use flat washers." I believe each designer and company has its own rules for where to use and insert flat washers, but for beginner designers, here's where to use flat washers:

For reference of bolt position. For bolt positions with washers in mind.

2025/11/16    

  Today's note is about "Bolt Position Reference". I get worried every time about the distance from the end face when fixing a plate or other object with bolts, so I made a "Bolt Position Reference" to avoid worrying ...

Evaluation and selection calculations for the Air Slide Table [MXQ] series

2024/3/5    

  Today's memo is about "Evaluation Selection Calculation for SMC's Air Slide Table [MXQ] Series". Air Slide Table The following is a note on "Evaluation Selection Calculation for SMC's Air Slide Table [MXQ] Series ...

Reference sites for studying mechanical design and practicing your work [summary]_2

A compilation of websites that can be used as a reference for both study and practice of mechanical design

2024/6/17    

Today, I would like to share with you a memo about "a collection of websites that can be used for both study and practice of mechanical design". In the field of mechanical design, it is not easy to see the contents of machines that other companies are designing due to the confidentiality agreement with customers....

The difference between meter-out and meter-in at the speedo is the difference between controlling at the exit or at the entrance.1

Difference between Meter-Out and Meter-In of Speakon and how to use them [Preserved Version].

2025/8/3    

  Here is a note on "The difference between meter-out and meter-in of the Speicon and how to use them". This article is for those (especially beginners) who use Speicon in air cylinder drive circuits ...

Mileage life and time life calculation method for LM Guide

Today's memo is on "How to calculate the distance life and time life of the LM Guide". When calculating the life of the LM Guide, please refer to the following formula to calculate the life of the LM Guide. Also, this formula is based on the "THK Catalo ...

Calculation method for angular velocity, angle, and time required in operation pattern (direction of rotation)

2026/1/13    

  Today's memo is about "how to calculate angular velocity, angle, and time required in the operation pattern (direction of rotation)" that can be used to calculate and study cycle time. In this article, we will summarize angles with respect to acceleration. ...

How to draw assembly drawings

2025/8/15    

  Here, I would like to make a note on "how to draw assembly drawings" in mechanical drawing. Although it seems that opportunities to draw assembly drawings are becoming less common due to the spread of 3D CAD, assembly drawings are ...

Difference between servo motors and stepping motors and how to use them

Thorough comparison of the differences between stepping motors and servo motors

2025/8/23    

  Here is a note on the difference between stepping motors and servo motors, a type of motor. In mechanical design, motor selection is an important process that determines equipment performance ...

Preparation for QC Certification Level 3. Summary of Basic Calculations

2025/4/13    

Today, I am taking notes on "QC Certification Level 3 Preparation. Summary of Basic Calculations" notes. I passed the QC Certification Level 3 exam on March 20, 2016 (a difficult year for the exam content). Here is what I actually put together as a preparation for QC Certification Level 3 ...