The Proceedings of Mechanical Engineering Congress, Japan
Online ISSN : 2424-2667
ISSN-L : 2424-2667
[volume title in Japanese]
Session ID : J2310203
Conference information

A study on four rollers type baseball pitching machine
*Shinobu SAKAIMasahiko WATANABE
Author information
CONFERENCE PROCEEDINGS FREE ACCESS

Details
Abstract

There are many players for ball game sports such as a baseball, tennis and table tennis etc. The ball pitching machine (shooting machine) is used for practice of the ball sports, and it is widely familiar. However, there are few pitching machines that can throw a ball with a gyro spin, such as a football or rifle bullet, in which the axis of the ball spins in the same direction as the ball travels. In this study, we have developed a new baseball pitching machine with a launch mechanism that uses four rollers (two launch and two gyro rollers). From the results of the throwing tests, the pitching machine can throw the balls with a wide range of speeds from 22.2 m/s (80 km/h) up to 44.4 m/s (160 km/h) and all pitch types (no-spin, fastball, curveball, slider and gyroball) at any directions. In addition, the baseball machine was capable of throwing a ball with higher control accuracy (less than 116 mm) compared to current pitching machines.

Content from these authors
© 2017 The Japan Society of Mechanical Engineers
Previous article Next article
feedback
Top