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Rigidity characteristic measurement method and rigidity characteristic measurement system

A measurement and rigidity technology, applied in the field of rigidity characteristic measurement system, which can solve problems such as time-consuming

Active Publication Date: 2020-04-21
PRGR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] However, for example, when all inspections are performed at the manufacturing stage of golf clubs, there is a problem that if measurements are performed at a plurality of impact velocities, it takes time for inspection.

Method used

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  • Rigidity characteristic measurement method and rigidity characteristic measurement system
  • Rigidity characteristic measurement method and rigidity characteristic measurement system
  • Rigidity characteristic measurement method and rigidity characteristic measurement system

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Experimental program
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Embodiment Construction

[0068] Hereinafter, preferred embodiments of the stiffness characteristic measurement method and the stiffness characteristic measurement system of the present invention will be described in detail with reference to the drawings.

[0069] In the present embodiment, the object to be collided is the golf club head 30, and the CT value of the golf club head 30 is measured as the stiffness characteristic value.

[0070] In addition, in the present embodiment, the golf club head 30 is a mass-produced product, and the representative CT values ​​(representative characteristic values) of many of these mass-produced golf club heads 30 are measured to evaluate whether each representative CT value is within a prescribed value. scope (the rule fits within the scope).

[0071] In general, products of the same model (model number) are predicted to have roughly the same performance. That is, golf club heads of the same model are predicted to have approximately the same representative CT val...

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Abstract

A rigidity characteristic measurement system 10 measures a CT value of a golf club head 30, on the basis of an acceleration generated in a collision object when the collision object is made to collidewith the golf club head 30. Correlation data 12 is data calculated by measuring, for a plurality of golf club heads 30 of the same model, a representative CT value of the golf club head 30 which is calculated on the basis of CT values measured multiple times while changing the collision speed of the collision object, and a test speed CT value which is a CT value when the collision speed is set toa predetermined test speed. A rigidity characteristic value measurement device 14 measures the test speed CT value for other golf club heads 30 of the abovementioned model. A computer 16 estimates, on the basis of the test speed CT value and the correlation data 12, a representative CT value of the other golf club heads 30.

Description

technical field [0001] The present invention relates to a rigidity characteristic measuring system for measuring the rigidity characteristic of an object to be collided. Background technique [0002] Conventionally, there is known a technique of measuring a CT (Characteristic Time) value as a stiffness characteristic value as an index affecting the rebound performance of a hitting tool such as a golf club head. [0003] In particular, among competitive golf clubs, the CT value is measured by the pendulum test prescribed by the USGA (United States Golf Association: United States Golf Association). The procedure and the like of the pendulum test are described in detail in Non-Patent Document 1 below. [0004] Patent Document 1 below is an apparatus for carrying out the above-mentioned pendulum test. A golf club in which the club head and the shaft are integrated is fixed, and a metallic ball collides with the club face by a pendulum (Japanese: vibration り子). The sphere is eq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A63B60/42G01N3/30G01N3/303A63B102/32
CPCA63B53/04A63B60/42G01N3/303G01N2203/0023G01N33/008G01N3/48G01P3/665
Inventor 三枝宏
Owner PRGR CO LTD