JIG FOR COIL SPRING, COIL SPRING MANUFACTURING METHOD, AND COIL SPRING TEST METHOD

• Main Authors: KATO HIDEKI, KAMEDA HIROKATSU, NAGAOKA KENJI, OGAWA TOSHIHIRO, MURAKAMI ATSUSHI, KASATORI SHINJI
• Format: Patent
• Language: English; Japanese
• Published: 30.09.2021
• Subjects: ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GRINDING; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; POLISHING; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

To provide a jig etc. for a coil spring which can apply residual stress to an inner peripheral surface of a coil spring while preventing bowing of the coil spring.SOLUTION: A jig (10) for a coil spring includes: a spring support part (13) on which one end of a coil spring (Sp) may be placed; displacement restriction parts (14) which extend from the spring support part (13) along an axis (CL), may contact with an outer peripheral surface of the coil spring (Sp), and restrict displacement of the coil spring (Sp) in a radial direction; and a lid part (15) which is supported by the displacement restriction parts (14) and sandwiches the coil spring (Sp) with the spring support part (13) to keep the coil spring (Sp) in a compressed state. Preferably, only the displacement restriction parts (14) are provided between the spring support part (13) and the lid part (15).SELECTED DRAWING: Figure 1 【課題】コイルばねの胴曲がりを防止しつつ、コイルばねの内周面にも残留応力を付与することが可能な、コイルばね用治具等を提供する。【解決手段】コイルばね用治具（１０）は、コイルばね（Ｓｐ）の一端を載せることが可能なばね支持部（１３）と、ばね支持部（１３）から軸線（ＣＬ）に沿って延び、コイルばね（Ｓｐ）の外周面に当接可能であると共に、コイルばね（Ｓｐ）の径方向への変位を規制する複数の変位規制部（１４）と、これらの変位規制部（１４）に支持され、ばね支持部（１３）と共にコイルばね（Ｓｐ）を挟持することにより、コイルばね（Ｓｐ）を圧縮した状態に保つことが可能な蓋部（１５）と、を有する。好ましくは、ばね支持部（１３）と、蓋部（１５）との間には、変位規制部（１４）のみが設けられている。【選択図】図１