JP2016067441A - Device for storing displacement of specific position of shaft and system for identifying high rigidity part of shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for storing displacement of a specific position of a shaft and a system for identifying a high rigidity part of the shaft capable of reducing an impact of the self-weight of the shaft as much as possible.SOLUTION: A device 2 for storing displacement of a specific position of a shaft includes a holding part 40, a displacement observation part 50, and an information storage part 83. The holding part holds a shaft SH or a tool GC having the shaft so that the axis of the shaft is along a vertical direction or roughly a vertical direction. The displacement observation part observes the displacement of a specific position at the top edge or the bottom edge of the shaft or the tool when the top edge or the bottom edge of the shaft, or the tool is vibrated, and is arranged above or below the holding part in a vertical direction or roughly vertical direction with a predetermined space SSp. The information storage part 83 stores information on the displacement acquired by the displacement observation part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus for storing a displacement of a specific position of an upper end or a lower end of a golf club shaft or the like. The present invention also relates to a system for specifying a highly rigid portion such as a shaft of a golf club.

  It is ideal that the golf club shaft has a perfect circular cross-sectional shape for the convenience of mounting the club head. However, in manufacturing the shaft, a metal plate such as stainless steel or steel, or a cloth material such as a prepreg made of carbon fiber reinforced resin. After rounding, it is necessary to join the end parts together, so that the part of the joint becomes thicker than the other part, and as a result, the rigidity of the thick part is more than the rigidity of the other part Becomes higher. Since this highly rigid portion has a great influence on the direction of the “bending” motion of the shaft, it is necessary to fully consider the position of the highly rigid portion with respect to the club head when mounting the club head on the shaft. . For this reason, “an apparatus for identifying a thick part (high rigidity part) of the shaft” has been proposed in the past (see, for example, Japanese Patent Publication No. 2003-500127). In this apparatus, the shaft axis is in a horizontal or substantially horizontal direction, and one end of the shaft is gripped. In this state, the free end of the shaft is vibrated, and the vibration pattern is observed. Thereafter, the shaft is rotated about several degrees to several tens of degrees around the axis of the shaft, and then the free end is vibrated again, and the vibration pattern is observed. This operation is repeated until the shaft has been rotated at least 180 ° around the shaft axis. And the highly rigid location of a shaft is specified by analyzing these vibration patterns.

Special table 2003-500127 gazette

  By the way, in the above-mentioned apparatus, the shaft axis is in a state along the horizontal direction or the substantially horizontal direction, and one end portion of the shaft is gripped. For this reason, when the free end of the shaft is vibrated, its own weight affects the vibration. For this reason, in this apparatus, the higher the weight of the shaft, the lower the accuracy of specifying the highly rigid portion.

  The subject of this invention is providing the displacement memory | storage device of the specific position of a shaft and the highly rigid site | part identification system of a shaft which can reduce the influence of the dead weight of a shaft as much as possible.

  A displacement storage device for a specific position of a shaft according to the first aspect of the present invention includes a holding unit, a displacement observation unit, and an information storage unit. The holding unit holds the shaft or the tool having the shaft (hereinafter simply referred to as “tool”) so that the shaft axis is along the vertical direction or the substantially vertical direction. In addition, the user of this apparatus needs to hold | maintain only one end part of a shaft or a tool with a holding | maintenance part so that the one end of a shaft or a tool may become a free end. In addition, it is preferable that an accommodation space for the club head exists on the opposite side of the holding portion to the displacement observation portion arrangement side. This is because displacement storage at a specific position can be executed without removing the club head. The displacement observation unit observes the displacement of a specific position of the upper end or lower end of the shaft or tool when the upper end or lower end of the shaft or tool is vibrated. It is arranged above or below via a predetermined space. The displacement observation unit is preferably an imager. In this device, when the shaft or tool is held by the holding portion, the shaft or tool is accommodated in the predetermined space. The information storage unit stores displacement information acquired by the displacement observation unit.

  As described above, in the displacement storage device at the specific position of the shaft, the holding unit holds the shaft or the tool such that the axis of the shaft is along the vertical direction or the substantially vertical direction. For this reason, in this apparatus, when the free end of the shaft or the tool is vibrated, the influence of the weight of the shaft or the tool can be reduced as much as possible.

  The displacement storage device for the specific position of the shaft according to the second aspect of the present invention is the displacement storage device for the specific position of the shaft according to the first aspect, and further includes an elevating mechanism. The lifting mechanism moves the displacement observation unit up and down along the vertical direction or the substantially vertical direction.

  As described above, the displacement storage device at the specific position of the shaft is provided with a lifting mechanism. For this reason, in the displacement storage device of the specific position of the shaft, the displacement of the specific position of the shaft or the tool having a different length can be observed at a suitable position.

  The displacement storage device for the specific position of the shaft according to the third aspect of the present invention is the displacement storage device for the specific position of the shaft according to the first aspect or the second aspect, and the displacement observation unit is an imager. The “imaging device” mentioned here is a camera such as a CCD camera, for example.

  As described above, in the displacement storage device at a specific position of the shaft, the displacement observation unit is an imager. For this reason, the displacement storage device for the specific position of the shaft can accurately track the displacement of the specific position of the shaft.

  The displacement storage device for the specific position of the shaft according to the fourth aspect of the present invention is the displacement storage device for the specific position of the shaft according to any one of the first to third aspects, and further includes a forced displacement release mechanism. This forced displacement release mechanism forcibly displaces the end of the shaft or tool on the side of the displacement observation section (that is, the free end) and then opens the shaft or tool. The forced displacement release mechanism may be, for example, a mechanism that releases the shaft or tool after the shaft or tool is gripped and pulled by the hand mechanism, or after the shaft or tool is pushed by the pusher, the pusher is moved to the shaft. Alternatively, the shaft or tool may be released by shifting from the tool.

  As described above, the displacement storage device at the specific position of the shaft is provided with a forced displacement release mechanism. For this reason, in this displacement memory device at a specific position of the shaft, it is possible to save the trouble of manually generating the vibration of the shaft, and to accurately determine the initial displacement direction of the shaft or the tool, and thus the shaft. It is possible to more accurately identify the high-rigidity portion.

  A displacement storage device for a specific position of a shaft according to a fifth aspect of the present invention is a displacement storage device for a specific position of a shaft according to the fourth aspect, wherein the forced displacement release mechanism further has a function of stopping the shaft or the tool. Have.

  As described above, in the displacement storage device at a specific position of the shaft, the forced displacement release mechanism has a function of stopping the shaft or the tool. For this reason, in the displacement memory device at the specific position of the shaft, it is not necessary to wait for the vibration of the shaft or the tool to stop, and the working time can be shortened.

  The displacement storage device for the specific position of the shaft according to the sixth aspect of the present invention is the displacement storage device for the specific position of the shaft according to the fourth aspect or the fifth aspect, and further includes a horizontal rotation mechanism. The horizontal rotation mechanism rotates or turns at least one of the holding portion and the forced displacement release mechanism along a horizontal or substantially horizontal plane. In such a case, it is preferable to hold the shaft or the tool on the holding portion so that the shaft axis coincides with the rotation axis of the horizontal rotation mechanism. Further, when the forced displacement release mechanism is fixedly arranged, that is, when the horizontal rotation mechanism rotates only the holding portion, the horizontal rotation mechanism rotates the holding portion at a predetermined angle, for example, in increments of several degrees or several tens of degrees. It is preferable to rotate. On the other hand, when the holding portion is fixedly installed, that is, when the horizontal rotation mechanism turns only the forced displacement release mechanism, the horizontal rotation mechanism moves the forced displacement release mechanism at a predetermined angle, for example, in steps of several degrees or several tens of degrees It is preferable to rotate 180 °. In such a case, the horizontal rotation mechanism is referred to as a horizontal turning mechanism. Further, when the horizontal rotation mechanism rotates the holding portion and turns the forced displacement release mechanism, the horizontal rotation mechanism reverses the rotation direction of the holding portion and the turning direction of the forced displacement release mechanism, and holds the holding portion at a predetermined angle. For example, it is preferable that the forced displacement release mechanism is rotated by a predetermined angle, for example, 90 ° in steps of several degrees or several tens of degrees, while being rotated by 90 ° in steps of several degrees or several tens of degrees. In such a case, the horizontal rotation mechanism is referred to as a horizontal rotation turning mechanism.

  As described above, a horizontal rotation mechanism is disposed in the displacement storage device at a specific position of the shaft. For this reason, in the displacement memory device of the specific position of the shaft, it is possible to save the trouble of manually rotating or turning the shaft or the tool or the forced displacement release mechanism, and it is possible to more accurately identify the high rigidity portion of the shaft. it can.

  The displacement storage device for the specific position of the shaft according to the seventh aspect of the present invention is the displacement storage device for the specific position of the shaft according to any one of the first to third aspects, and further includes a horizontal rotation mechanism. The horizontal rotation mechanism rotates the holding unit along a horizontal or substantially horizontal surface. In such a case, it is preferable to hold the shaft or the tool on the holding portion so that the shaft axis coincides with the rotation axis of the horizontal rotation mechanism. In such a case, the direction in which the free end of the shaft or tool is displaced when the vibration is applied is fixed. The horizontal rotation mechanism preferably rotates the holding portion by a predetermined angle, for example, 180 ° in steps of several degrees or several tens of degrees.

  As described above, a horizontal rotation mechanism is disposed in the displacement storage device at a specific position of the shaft. For this reason, in the displacement memory | storage device of this specific position of a shaft, while eliminating the effort which rotates a shaft or a tool manually, the highly rigid location of a shaft can be pinpointed more correctly.

  The shaft high-rigidity part specifying system according to the eighth aspect of the present invention includes the displacement storage device and the high-rigidity part specifying device at the specific position of the shaft according to any one of the first to sixth aspects. The high-rigidity part specifying device specifies a high-rigidity part of the shaft based on displacement information.

  As described above, the high-rigidity region specifying system incorporates the above-described displacement storage device for the specific position of the shaft. For this reason, in this high-rigidity site identification system, when the free end of the shaft or the tool is vibrated, the influence of the weight of the shaft or the tool can be reduced as much as possible. Can be identified.

It is a perspective view of the high-rigidity site | part identification system of the shaft which concerns on embodiment of this invention. However, in this figure, the information storage analysis device is omitted. It is a front view of the highly rigid site | part specific system of the shaft which concerns on embodiment of this invention. However, in this figure, the information storage analysis device is omitted. It is an enlarged view of A1 part of FIG. It is an enlarged view of the A2 part of FIG. It is an enlarged view of B1 part of FIG. It is an enlarged view of B2 part of FIG. It is a functional block diagram of the shaft high-rigidity site | part identification system which concerns on embodiment of this invention. It is sectional drawing of the shaft which is a test object of the shaft high-rigidity site | part specific system which concerns on embodiment of this invention. It is a conceptual diagram of the displacement measurement of the center position of a shaft upper end. The amount of displacement of the center position of the upper end of the shaft at each measurement time is separated into an x-direction component and a y-direction component, and these components are plotted on a graph with the time axis as the horizontal axis and the displacement amount as the vertical axis. is there. FIG. 11 is a plot of FIG. 10 in 12 directions. It is the figure which plotted the displacement amount of the center position of the shaft upper end in each measurement time on the graph which makes a y-axis a horizontal axis and makes an x-axis the vertical axis | shaft. FIG. 13 is an analysis diagram specifying the narrowest width direction of the plot distribution in the plot diagram of FIG. 12. FIG. 14 is an analysis diagram of FIG. 13 in 12 directions. It is the figure which plotted the narrowest width value of the plot distribution in 12 directions on the graph which makes a rotation angle a horizontal axis and makes the narrowest width value a vertical axis | shaft. It is a figure which compares the frequency of the center position of the shaft upper end in the two minimum points of the graph of FIG. It is a figure which compares the half period in the direction where it was recognized that the frequency is high in FIG.

<Outline of Configuration of High-Rigidity Shaft Identification System According to Embodiment of Present Invention>
A shaft high-rigidity part specifying system 1 according to an embodiment of the present invention is a system for specifying a high-rigidity part of a shaft SH such as a golf club GC, as shown in FIGS. 1, 2, and 7. The frame 10, the vertical chuck mechanism 20, the leg base 29, the turntable mechanism 30, the hand mechanism 40, the hand moving mechanism 49, the image pickup device 50, the lifting mechanism 60, the electrical component box 70, and the analysis device 80 (FIG. 7). Reference). Hereinafter, these components will be described in detail. In the present embodiment, the one excluding the central processing unit 82 (described later) of the analysis device 80, that is, the one excluding the analysis function may be referred to as a “shaft specific position displacement storage device”. In the figure, reference numeral 2 is assigned to the shaft specific position displacement storage device.

(1) Frame As shown in FIGS. 1 and 2, the frame 10 is a substantially rectangular parallelepiped frame, and mainly includes a left front vertical column 11, a left back vertical column 12, a right back vertical column 13, and a right front. It is composed of a vertical column 14, an upper frame 15, a lower frame 16, a left upper beam 17a, a rear upper beam 17b, an upper right beam 17c, a lower left beam 18a, a lower lower beam 18b, and a lower right beam 18c. Yes.

  As shown in FIGS. 1 and 2, the left front vertical column 11 extends upward from the left front corner of the lower frame 16 and is joined to the left front corner of the upper frame 15. As shown in FIGS. 1 and 2, the left back vertical column 12 extends upward from the left back corner of the lower frame 16 and is joined to the left back corner of the upper frame 15. Yes. As shown in FIGS. 1 and 2, the right back vertical column 13 extends upward from the right back corner of the lower frame 16 and is joined to the right back corner of the upper frame 15. Yes. As shown in FIGS. 1 and 2, the right front vertical column 14 extends upward from the right front corner of the lower frame 16 and is joined to the right front corner of the upper frame 15. As shown in FIGS. 1 and 2, the left upper beam 17a extends horizontally toward the left back vertical column 12 from a position lower by about a quarter from the upper end of the left front vertical column 11, and the left back vertical column It is joined to the column 12. As shown in FIGS. 1 and 2, the rear upper beam 17b extends horizontally from the position lowering about one-fourth from the upper end of the left rear vertical column 12 toward the right rear vertical column 13, and It is joined to the vertical column 13. As shown in FIGS. 1 and 2, the upper right side beam 17 c extends horizontally from the position lowering about one-fourth from the upper end of the right front vertical column 14 toward the right rear vertical column 13. It is joined to the column 13. As shown in FIGS. 1 and 2, the lower left beam 18a extends horizontally from the position lowered about 3/5 from the upper end of the left front vertical column 11 toward the left rear vertical column 12, and is It is joined to the column 12. As shown in FIG. 1 and FIG. 2, the lower back beam 18 b extends horizontally from the position lowered about 3/5 from the upper end of the left back vertical column 12 toward the right back vertical column 13. It is joined to the back vertical column 13. As shown in FIGS. 1 and 2, the lower right side beam 18 c extends horizontally from the position lowering about 3/5 from the upper end of the right front vertical column 14 toward the right rear vertical column 13. It is joined to the vertical column 13.

(2) Vertical Chuck Mechanism The vertical chuck mechanism 20 is a mechanism for installing the shaft or the golf club GC along the vertical direction or the substantially vertical direction. As shown in FIG. 3 and FIG. The support 21, the fixed chuck 22 a, the movable chuck 22 b, and the handle mechanism 23 are configured. The vertical chuck mechanism 20 is joined to a leg base 29 as shown in FIGS. The space above the vertical chuck mechanism 20 and below the imager 50 functions as a housing space SSp for the shaft SH.

  As shown in FIGS. 3 and 4, the support 21 is joined to a left side portion of a top plate portion 29 a (described later) of the leg base 29. As shown in FIGS. 3 and 4, a fixed chuck 22 a is attached to the right side surface of the support 21. As shown in FIGS. 3 and 4, the movable chuck 22 b is disposed so as to face the fixed chuck 22 a and is attached to a moving plate 23 a (described later) of the handle mechanism 23. As shown in FIGS. 3 and 4, the handle mechanism 23 mainly includes a moving plate 23a, a screw mechanism 23b, and a handle 23c. As shown in FIGS. 3 and 4, a movable chuck 22 b is mounted on the moving plate 23 a on the surface facing the fixed chuck 22 a. A handle 23c is attached to the moving plate 23a via a screw mechanism 23b. When the handle 23c is rotated clockwise, the moving plate 23a is translated in parallel toward the support body by the screw mechanism 23b. On the other hand, when the handle 23c is rotated counterclockwise, the moving plate 23a is moved in parallel toward the side farther from the support 21 by the screw mechanism 23b.

(3) Leg stand As shown in FIGS. 3 and 4, the leg stand 29 is mainly composed of an upper frame FL, four leg portions LG, and a top plate portion 29a. 4, the turntable mechanism 30 is fixed to a rotary table 32 (described later). That is, the vertical chuck mechanism 20 is joined to the turntable mechanism 30 via the leg base 29. The upper frame FL is a substantially square frame. As shown in FIGS. 3 and 4, the leg portion LG extends downward from the four corners of the upper frame body FL, and is joined to the rotary table 32 of the turntable mechanism 30. As shown in FIGS. 3 and 4, the top plate portion 29 a is joined on the upper frame body FL. As shown in FIG. 3, the front side central portion of the upper frame FL is cut away, and the top plate 29a has a slit SL extending from the front side central portion to the central portion toward the back side. Is formed. Note that the notch Rc of the upper frame FL and the slit SL of the top plate portion 29a are formed to pass the neck portion Pn and the like of the golf club GC as shown in FIGS. In addition, as shown in FIGS. 3 and 4, an accommodation space HSp is formed at a location surrounded by the top plate portion 29 a of the leg base 29, the rotary table 32 of the turntable mechanism 30, and the four leg portions LG. Has been. In the accommodation space HSp, for example, the club head HD (see FIG. 4) of the golf club GC is accommodated.

(4) Turntable mechanism The turntable mechanism 30 is mainly composed of a rotation drive unit 31 (see FIG. 7) and a rotation table 32, as shown in FIGS. The rotation drive unit 31 is a power source that rotates the rotary table 32, and is, for example, a stepping motor. The rotation drive unit 31 is connected to the electrical component box 70 via a control line Lc1 (see FIG. 7). In the turntable mechanism 30 according to the present embodiment, the rotation drive unit 31 rotates the rotation table 32 in increments of 15 °. The turntable 32 is connected to the rotation drive unit 31 via a belt transmission mechanism (not shown). Further, as described above, the vertical chuck mechanism 20 is joined to the rotary table 32 via the leg base 29. For this reason, when the rotary table 32 is rotationally driven by the rotational drive unit 31, the vertical chuck mechanism 20 is also rotated accordingly. The vertical chuck mechanism 20 and the turntable mechanism 30 are aligned so that the rotation axis of the rotary table 32 matches the axis of the shaft SH of the golf club GC.

(5) Hand Mechanism As shown in FIGS. 5, 6, and 7, the hand mechanism 40 mainly includes a pair of claw portions 41, an opening / closing mechanism 42, and an opening / closing mechanism driving unit 43 (see FIG. 7). ing. The pair of claws 41 are opened and closed by an opening / closing mechanism 42. The opening / closing mechanism 42 is driven by an opening / closing mechanism driving unit 43. The opening / closing mechanism driving unit 43 is, for example, a motor. The opening / closing mechanism drive unit 43 is connected to the electrical component box 70 via a control line Lc2 (see FIG. 7).

(6) Hand Moving Mechanism As shown in FIGS. 1, 2, 5, and 6, the hand moving mechanism 49 is mainly composed of a horizontal slider (not shown), a horizontal rail 49a, and a horizontal slider driving unit 49b. It is configured. A hand mechanism 40 is attached to the horizontal slider. A horizontal slider is fitted to the horizontal rail 49a so as to be movable in the left-right direction. The horizontal slider drive unit 49b is, for example, a motor or the like, and is connected to the horizontal slider via a ball screw or the like. The horizontal slider drive unit 49b is connected to the electrical component box 70 via a control line Lc3 (see FIG. 7).

(7) Imager The imager 50 is, for example, a digital camera, a CCD camera, or the like. As shown in FIGS. 1 and 2, the imager 50 is located above the hand mechanism 40 and the hand moving mechanism 49 via the lifting mechanism 60. It is arranged. In the image pickup device 50, the lens faces downward in the vertical direction, and the lower portion is set as an imaging range. The imager 50 is arranged so that the optical axis coincides with the rotation axis of the turntable mechanism 30. The imager 50 is connected to the electrical component box 70 via a control line Lc4 (see FIG. 7). As will be described in detail later, the imager 50 tracks the displacement of the center point of the upper end of the shaft SH while the shaft SH is vibrating.

(8) Elevating Mechanism As described above, the elevating mechanism 60 is a mechanism for elevating the imaging device 50, and mainly includes a vertical slider 61, a vertical rail 62, and a vertical as shown in FIGS. The slider driving unit 63 is configured. The imager 50 is attached to the vertical slider 61 via a horizontal support 61a. A vertical slider 61 is fitted to the vertical rail 62 so as to be movable in the vertical direction. The vertical slider driving unit 63 is, for example, a motor or the like, and is connected to the vertical slider via a ball screw or the like. The vertical slider driving unit 63 is connected to the electrical component box 70 via a control line Lc5 (see FIG. 7).

(9) Electrical component box The electrical component box 70 mainly includes a casing 71, a control device 72, and a communication device 73, as shown in FIG. As shown in FIG. 7, the control device 72 includes a rotation drive unit 31, an opening / closing mechanism drive unit 43, a horizontal slider drive unit 49 b, an image pickup device 50, and a vertical slider drive unit 63 via control lines Lc 1 to Lc 5. It is connected to the. And this control apparatus 72 produces | generates a control signal based on the information transmitted via the communication apparatus 73 from the analysis apparatus 80, The rotation drive part 31, the opening-and-closing mechanism drive part 43, and a horizontal slider drive part are produced | generated for the control signal. 49b, the image pickup device 50, and the vertical slider drive unit 63. As shown in FIG. 7, the communication device 73 is communicatively connected to the analysis device 80 via a communication line Lm. In addition, the communication device 73 transmits imaging information transmitted from the imaging device 50 via the control device 72 to the analysis device 80.

(10) Analysis Device The analysis device 80 is, for example, a computer or a workstation, and mainly includes a communication interface (IF) 81, a central processing unit 82, and a storage device 83, as shown in FIG. ing. The communication interface 81 is communicatively connected to the communication device 73 of the electrical component box 70 via the communication line Lm, and the central processing unit 82 reads information transmitted from the communication device 73 via the communication line Lm. The information is converted into a possible format, and the converted information is transmitted to the central processing unit 82. In addition, the communication interface 81 converts information transmitted from the central processing unit 82 into a format that can be read by the control device 72 of the electrical component box 70, and returns the returned information to the electrical component via the communication line Lm. It transmits to the communication device 73 of the box 70. The central processing unit 82 analyzes the imaging information transmitted from the imager 50 via the control box 70 in accordance with the analysis program stored in the storage device 83, and identifies the highly rigid portion of the shaft SH. This specifying method will be described in detail below. The storage device 83 stores an analysis program, the imaging information, processing information at the time of analysis, analysis result information, and the like.

<Method of identifying high rigidity part of shaft>
Hereinafter, a method for specifying the high-rigidity portion of the shaft SH using the above-described shaft high-rigidity portion specifying system 1 will be described in detail.

(1) Premise description First, the cross-sectional shape of the shaft SH to be measured is shown in FIG. As shown in FIG. 8, in the cross section of the shaft SH, the inner periphery has a shape close to a perfect circle, but the outer periphery swells outward from the perfect circle shape on only one side (see the broken line in FIG. 8). It has a shape. That is, in this shaft SH, only one side is thick. And the thickest part of this thick part is the highly rigid part Ps. In addition, this highly rigid site | part Ps exists over the whole longitudinal direction of shaft SH. In the method for identifying the high-rigidity portion, the turntable mechanism 30, the hand mechanism 40, and the hand moving mechanism 49 are controlled, so that the 0 ° direction D0, the 15 ° direction D15, and the 30 ° direction as shown in FIG. From 12 directions of D30, 45 ° direction D45, 60 ° direction D60, 75 ° direction D75, 90 ° direction D90, 105 ° direction D105, 120 ° direction D120, 135 ° direction D135, 150 ° direction D150 and 165 ° direction D165 By adding vibration and analyzing the vibration pattern, the highly rigid portion Ps is specified. In FIG. 8, the high-rigidity part Ps happens to be present in the 0 ° direction D0, but it is usually unknown in which direction the high-rigidity part Ps exists.

(2) Specific Procedure First, as shown in FIGS. 1 and 2, the user holds the shaft SH on the vertical chuck mechanism 20 so that the shaft SH is along the vertical direction. In such a case, the setting direction of the shaft may be confirmed with an auxiliary jig such as a level. When the club head HD is attached to the shaft SH, the user sets the shaft SH in the accommodation space SSp so that the club head HD is accommodated in the accommodation space HSp of the leg base 29.

  Next, the hand mechanism 40 and the hand moving mechanism 49 are controlled so that the shaft SH is sandwiched by the claw portion 41 and the shaking of the shaft SH is stopped. In such a case, the operations of the hand mechanism 40 and the hand moving mechanism 49 are programmed in advance so that the claw portion 41 sandwiches the rotation shaft of the turntable mechanism 30.

  Next, the user confirms that the shaking of the shaft SH has completely stopped on the monitor of the image pickup device 50 (for example, a display (not shown) attached to the analysis device 80), and the shaft SH on the image is confirmed. The center point Pc (see FIG. 9) of the upper end of is designated.

  When the designation of the center point Pc is completed, the hand mechanism 40 is pulled back along the horizontal rail 49a by the hand moving mechanism 49 with the shaft SH interposed therebetween, and then the hand mechanism 40 is opened and the shaft SH is opened. The Then, the shaft SH starts to vibrate. The movement of the shaft SH at this time is imaged by the imaging device 50, and the imaging information is transmitted to the analysis device 80. Then, the following information processing is performed by the analysis program of the analysis device 80.

  First, as shown in FIG. 9, the coordinate position of the center point Pc at the upper end of the shaft SH at time t is specified, and the x-axis component and the y-axis component of the coordinate position are derived. In FIG. 9, the shaft SH at time t1 is shown by a solid line, and the shaft SH at time t2 is shown by a broken line. Here, the x-axis component of the coordinate position of the center point Pc at time t1 is x (t1), and the y-axis component is y (t1). Further, the x-axis component of the coordinate position of the center point Pc at time t2 is x (t2), and the y-axis component is y (t2). Note that the time t, which is the acquisition interval of imaging information, is preferably about 1 millisecond in order to ensure sufficient analysis accuracy. Then, when this information group is plotted on a graph having the time t as the horizontal axis and the x-axis component x (t) and the y-axis component y (t) as the vertical axis, the result is as shown in FIG.

  When the acquisition of the information is completed, the turntable mechanism 30 rotates the shaft 30 by 15 ° about its own axis. Then, the above operation is repeated again 11 times, and similar information is accumulated in the analysis device 80 (see FIG. 11).

  After the above information in 12 directions is acquired, the information obtained in each direction D0, D15, D30, D45, D60, D75, D90, D105, D120, D135, D150, D165 has the horizontal axis as the y-axis component. And plotted on a graph with the vertical axis as the x-axis component (see FIG. 12). In this graph, a plot pair having the narrowest width is specified, a straight line Lmin connecting the plot pair is displayed on the monitor, and a value of the width of the plot pair (hereinafter referred to as “the narrowest width”) is calculated. (See FIGS. 13 and 14).

  Then, the narrowest width in each direction D0, D15, D30, D45, D60, D75, D90, D105, D120, D135, D150, and D165 is plotted with respect to the direction angle to create a graph as shown in FIG. The minimum point of the curve in this graph is specified. In FIG. 15, minimum points are recognized in the vicinity of 8 ° and 106 °.

  Subsequently, the motion frequency of the center point Pc in the 15 ° direction D15 and the 105 ° direction D105, which are the directions closest to 8 ° and 106 °, is derived from the graph of FIG. 11, and the average frequency, the maximum frequency, the minimum frequency, etc. Is required. Note that the average frequency, maximum frequency, minimum frequency, and the like obtained in this way are displayed on the monitor as shown in FIG. Then, referring to FIG. 16, the frequency in the 8 ° direction is higher than that in the 106 ° direction. This indicates that a highly rigid portion Ps exists in the shaft portion in the 8 ° direction. This is because the higher the rigidity, the higher the frequency.

  Finally, the positive half cycle and the negative half cycle in the 15 ° direction D15, which is the direction angle closest to 8 °, are derived from the graph of FIG. 11, and their average half cycle, maximum half cycle, minimum half cycle, etc. Is required. The average half cycle, the maximum half cycle, the minimum half cycle, and the like obtained in this way are displayed on the monitor as shown in FIG. Then, referring to FIG. 17, the half-cycle is higher on the −165 ° side than on the 15 ° side. This indicates that the shaft portion on the opposite side of the 8 ° side on the −172 ° side is the highly rigid portion Ps. This is because the higher the rigidity, the higher the half cycle. That is, the high-rigidity part Ps of the shaft SH is specified here.

<Characteristics of the shaft high rigidity part specifying system according to the embodiment of the present invention>
(1)
In the shaft high rigidity region specifying system 1 according to the embodiment of the present invention, vibration analysis is performed in a state where the shaft SH is along the vertical direction. For this reason, in this shaft high rigidity site | part identification system 1, when vibrating the free end of the shaft SH, the influence of the dead weight of the shaft SH can be reduced as much as possible.

(2)
In the shaft high-rigidity part specifying system 1 according to the embodiment of the present invention, an elevating mechanism 60 is disposed. For this reason, in this shaft high rigidity site | part identification system 1, the displacement of center position Pc of the upper end of shaft SH from which length differs can be observed with suitable height.

(3)
In the shaft high-rigidity site specifying system 1 according to the embodiment of the present invention, the imaging device 50 is used to observe the displacement of the center position Pc at the upper end of the shaft SH. For this reason, in this shaft high rigidity site | part identification system 1, the displacement can be tracked correctly.

(4)
A hand mechanism 40 and a hand moving mechanism 49 are disposed in the shaft high-rigidity specifying system 1 according to the embodiment of the present invention. For this reason, in this shaft high-rigidity site identification system 1, it is possible to save the trouble of manually generating the vibration of the shaft SH (using a user's finger or the like) and accurately determining the initial displacement direction of the shaft SH. As a result, the highly rigid portion Ps of the shaft SH can be specified more accurately. Further, by these mechanisms 40 and 49, the vibration of the shaft SH can be stopped once before the shaft SH is vibrated. For this reason, in this shaft high rigidity site | part identification system 1, it is not necessary to wait for the vibration of shaft SH to stop, and working time can be shortened.

(5)
A turntable mechanism 30 is disposed in the shaft high-rigidity specifying system 1 according to the embodiment of the present invention. For this reason, in this shaft high-rigidity part specifying system 1, it is possible to save the trouble of manually rotating the shaft SH (by the user's manual work) and more accurately specify the high-rigidity part Ps of the shaft SH. Can do.

(6)
In the shaft high-rigidity site specifying system 1 according to the embodiment of the present invention, the accommodation space HSp is formed in the leg base 29, and the club head HD can be accommodated in the accommodation space HSp. For this reason, in this shaft high-rigidity part specifying system 1, the high-rigidity part Ps can be specified without removing the club head HD. In the shaft high rigidity region specifying system 1, it is not necessary to remove not only the club head HD but also the grip.

<Modification>
(A)
In the shaft high-rigidity specifying system 1 according to the previous embodiment, a turntable mechanism 30, a leg base 29, a vertical chuck mechanism 20, a hand mechanism 40 and a hand moving mechanism 49, and an imager 50 are arranged in order from the bottom. However, the turntable mechanism 30, the leg base 29, the vertical chuck mechanism 20, the hand mechanism 40 and the hand moving mechanism 49, and the imaging device 50 may be arranged in order from the top. That is, the apparatus shown in FIG. 1 may be turned upside down.

(B)
In the shaft high-rigidity specifying system 1 according to the previous embodiment, when vibration is applied to the shaft SH, the hand mechanism 40 is pulled back along the horizontal rail 49a by the hand moving mechanism 49 with the shaft SH interposed therebetween. After that, the hand mechanism 40 is opened and the shaft SH is opened. Instead, after the push rod is attached to the hand moving mechanism 49 and the shaft SH is pushed in the opposite direction by the push rod. The shaft SH may be opened by rotating the hand moving mechanism 49 or the push bar along the horizontal direction to separate the push bar from the shaft SH.

(C)
In the shaft high-rigidity specifying system 1 according to the previous embodiment, the vertical chuck mechanism 20 is configured to rotate by the turntable mechanism 30, but the vertical chuck mechanism 20 is fixed, and the hand mechanism 40 and the hand movement are fixed. The mechanism 49 may be turned by a turning mechanism, or the vertical chuck mechanism 20 may be rotated by the turntable mechanism 30 and the hand mechanism 40 and the hand moving mechanism 49 may be turned in opposite directions.

(D)
In the shaft high-rigidity specifying system 1 according to the previous embodiment, the operations of the hand mechanism 40 and the hand moving mechanism 49 are programmed in advance so that the claw portion 41 sandwiches the rotation shaft of the turntable mechanism 30. The vibration may be prevented by attaching a pressure sensor or the like to the tip of the claw portion 41.

(E)
In the shaft high-rigidity specifying system 1 according to the previous embodiment, the rotation angle of the turntable mechanism 30 is in increments of 15 °, but this is merely an example and does not limit the present invention. That is, the rotation angle increment may be 10 °, 5 ° C., 1 °, or the like. As a matter of course, the smaller the rotation angle step, the higher the accuracy of specifying the highly rigid portion Ps of the shaft SH.

(F)
In the shaft high-rigidity specifying system 1 according to the previous embodiment, the imaging device 50 is used for observing the displacement of the center position Pc at the upper end of the shaft SH. However, as long as the displacement of the center position Pc can be observed. Other equipment such as a laser measuring instrument may be used.

1 Shaft high rigidity part identification system (Shaft high rigidity part identification system)
2 Shaft specific position displacement storage device (shaft specific position displacement storage device)
20 Vertical chuck mechanism (holding part)
30 Turntable mechanism (horizontal rotation mechanism)
40 Hand mechanism (forced displacement release mechanism)
50 Imager (displacement observation unit)
60 Lifting mechanism 80 Analyzing device (High-rigidity part specifying device)
83 Storage device (information storage unit)
SH Shaft SSp Shaft insertion space (predetermined space)

Claims (8)

A holding unit for holding the shaft or the tool having the shaft so that the axis of the shaft is along the vertical direction or the substantially vertical direction;
A displacement observing unit disposed via a predetermined space above or below the holding unit in a vertical direction or a substantially vertical direction;
A displacement storage device at a specific position of the shaft, comprising: an information storage unit that stores information on the displacement acquired by the displacement observation unit. The displacement storage device at a specific position of the shaft according to claim 1, further comprising an elevating mechanism that elevates and lowers the displacement observation unit along the vertical direction or the substantially vertical direction. The displacement storage device for a specific position of a shaft according to claim 1, wherein the displacement observation unit is an imager. The shaft according to any one of claims 1 to 3, further comprising a forced displacement release mechanism that opens the shaft or the tool after forcibly displacing the shaft or the end of the tool on the displacement observation unit side. Displacement storage device at a specific position. The displacement storage device for a specific position of the shaft according to claim 4, wherein the forced displacement release mechanism further has a function of causing the shaft or the tool to be stationary. The displacement storage device at a specific position of the shaft according to claim 4 or 5, further comprising a horizontal rotation mechanism that rotates or turns at least one of the holding unit and the forced displacement release mechanism along a horizontal or substantially horizontal plane. The displacement storage device at a specific position of the shaft according to any one of claims 1 to 3, further comprising a horizontal rotation mechanism that rotates the holding portion along a horizontal or substantially horizontal surface. A displacement storage device for a specific position of the shaft according to any one of claims 1 to 7,
A high-rigidity part specifying system for a shaft, comprising: a high-rigidity part specifying device that specifies a high-rigidity part of the shaft based on the displacement information.