JP2520351Y2 - Foot type measuring machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foot-type measuring machine for measuring the shape of a human foot.

[0002]

2. Description of the Related Art When manufacturing footwear such as shoes, it is desired to manufacture the footwear that fits the shape of the foot. For this purpose, for example, it is necessary to measure the foot shape of the whole Japanese by region, sex, and age, and perform a scientific analysis.

By the way, conventionally, when measuring a foot mold, a measuring instrument such as a scale is used, or a foot model made according to the shape of the foot is rotated with respect to a fixed distance detector. And measure the coordinates of the required measurement point,
Alternatively, there has been a device that uses a three-dimensional measuring machine equipped with a contact-type probe at the tip of an arm that can be freely bent and bent to bring the probe into contact with the leg of the object to be measured.

[0004]

[Problems to be Solved by the Invention] However, the scale measurement is cumbersome and time-consuming, and the accuracy is poor depending on the measurement method. When the conventional coordinate measuring machine is used, the measurement point is in a position where it is difficult to measure. However, there are problems that measurement cannot be performed because of the inability to approach, and the measurement accuracy deteriorates. Originally, in measuring the foot shape for shoe manufacturing, it is desirable that the measurer stands up and the weight of both feet is on average, but it is difficult to measure with a scale or a conventional three-dimensional measuring machine. There is a problem that accurate measurement cannot always be performed because measurement cannot be performed unless the foot is moved or tilted when measuring the measurement point at the position.

Further, these measuring means also have a drawback that it is impossible to measure a cross-sectional shape obtained by cutting the foot mold at an arbitrary angle. Furthermore, with a measuring machine that uses a foot model, it is troublesome to make a foot model, and even in this case, it is possible to measure a limited cross section of the foot model, but it is necessary to measure the cross-sectional shape of any desired foot model. Has the drawback of being difficult. As described above, there are various drawbacks in the conventional foot shape measuring means, and it is not possible to efficiently collect a large number of foot shape measurement data in order to manufacture shoes that meet individual feet.

The present invention solves the above-mentioned problems of the related art, and can easily and accurately measure a required point without moving the foot to be measured and can easily measure an arbitrary cross-sectional shape. The purpose is to provide a measuring instrument.

The present invention will be described with reference to the drawings corresponding to the embodiments. A foot-type measuring machine according to the present invention has a basic base 1 and a horizontal movement in one direction on the basic base 1. An X-axis base 8 provided, a Y-axis base 17 that is horizontally movable on the X-axis base 8 in a direction orthogonal to the moving direction of the X-axis base 8, and a vertical direction on the Y-axis base 17. A movably provided Z-axis bracket 38, a γ-axis base 25 that rotatably supports a central portion of the Z-axis bracket 38 on the Y-axis base 17 by a vertical shaft 26, and a center on both sides of the Z-axis bracket 38. Fixed ring 6 which is supported by a horizontal axis
0, a rotary ring 75 rotatably provided along the circumference of the fixed ring 60, an I-axis plate 80 movably provided along the side surface of the rotary ring 75, and an I-axis plate 80. A distance detector 90 attached to the center of the rotating ring 75, and a foot rest 97 for placing a foot to be measured.
Is placed in the rotary ring 75, the X-axis base 8, the Y-axis base 17, and the Z-axis bracket 38.
And the detectors 9, 18, 32, 53, 57 for detecting the respective movement displacement amounts of the I-axis plate 80 and the respective angle displacement amounts of the γ-axis base 25, the fixed ring 60 and the rotating ring 75.
65,86 and these detectors 9,18,32,53,5
7, 65, 86 and the device 10 that calculates the coordinates of the measurement point of the measurement target from the detection values of the distance detector 90.

[0007]

In the foot type measuring machine shown in FIG. 1, for example, an axis passing through the center 0'of the rotary ring and passing through the rotary ring 75 at a right angle is defined as an X'axis, and the rotary ring 75 is orthogonal to the X'axis.
The axis that traverses horizontally is the Y'axis, the axis that is orthogonal to the X'axis and the Y'axis and that vertically crosses the rotating ring 75 is the Z'axis, and the center 0'of the rotating ring 75 is the X'Y '. Z'It is the origin of the three-dimensional coordinates.

The distance detector 90 attached to the rotary ring 75 via the I-axis plate 80 includes an X-axis base 8 and a Y-axis.
By moving the shaft base 17 and the Z-axis bracket 38 with respect to their supporting parts, respectively, it is possible to move on each axis of X'Y'Z ', and also to rotate the rotary ring 75, the fixed ring 60, and the γ-axis base 25. By rotating the support portion by an appropriate angle, each axis of X'Y'Z 'can be rotated by an appropriate angle about 0'. Therefore, if the foot to be measured is placed on the foot rest 97 arranged in the rotary ring 75 and each of the movable and rotatable parts of the device is appropriately adjusted, the foot is not fixed and moved at any measurement point. The distance detector can be pointed at, and measurement becomes possible.

The I-axis plate 80 is used for the distance detector 9
By properly changing the distance between 0 and the object to be measured, the detection sensitivity of the distance detector 90 is set to an appropriate position. In this way, the moving and rotating parts of the device are adjusted, and the detection values obtained from the distance detector 90 and the detectors 9, 18, 32, 53, 57, 65, 86 provided with the three-dimensional coordinate systems are obtained. By computing with the computing device 110,
Easy to measure. Also, rotate the rotating ring 75 once,
If the distance detector 90 continuously measures the outer shape of the foot to be measured, its cross-sectional shape can be easily obtained. Then, as described above, by setting the Z- axis base 38 and the fixing ring 60 at appropriate angles, an arbitrary cross-sectional shape can be easily obtained.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are perspective views showing the entire foot-type measuring machine according to an embodiment of the present invention, FIG. 3 is a front view, FIG. 4 is a plan view, FIG. 5 is a side view, and FIG. 6 is a rear view. It is a figure. As shown in the figure, the foot-type measuring machine of the present invention has a basic base 1, an X-axis base 8, a Y-axis base 17, a Z- axis base 25, a Z-axis bracket 38, a fixed ring 60, a rotary ring 75, and an I-axis. In addition to the basic structural parts such as the plate 80 and the footrest 95, the detectors 9 and 1 for reading the movement / rotation of each axis
8, 32, 53, 65, 86, a distance detector 90, and a device 110 for calculating coordinate axes of measurement points based on these detected values.

Referring to the drawings in detail, a wheel 2 used for movement is attached to a lower surface of a basic base 1 which is a base of the apparatus, and a lower surface of a corner portion is vertically stretchable and fixed. An installation leg 3 that can be installed is provided. Further, on the upper surface of the basic base 1, X-axis rails 4 and 4 are provided horizontally on both sides in the longitudinal direction, and X-axis racks 5 and 5 are provided outside the X-axis rails 4 and 4 along the X-axis rails 4 and 4. To be As will be described later, in this foot-type measuring machine, the states shown in FIGS. 1 to 6 are the reference postures, and in this basic posture, as shown in FIG.
The center of the three-dimensional coordinates of Y'and Z'is taken. Therefore, the X-axis rails 4 and 4 installed on the basic base 1 are provided parallel to the X'axis. Reference numeral 6 denotes stopper projections provided at both ends of the X-axis rails 4 and 4 for restricting movement of the X-axis base 8.

The X-axis base 8 is provided on the basic base 1 so as to be slidable along the X-axis rails 4 and 4, that is, along the X'axis. A detector (rotary encoder) 9 is provided on the X-axis base 8, and a gear 10 provided on a shaft of the detector 9 is meshed with one of the X-axis racks 5 to allow the X-axis rail 4 of the X-axis base 8 to be engaged. , 4 (X'-axis) can be detected, an electromagnetic brake 11 is provided, and a gear 12 provided at the shaft of the electromagnetic brake 11 is meshed with the other X-axis rack 5 to provide an electromagnetic brake. With the operation of 11, the X-axis base 8 can be fixed on the basic base 1. On the upper surface of the X-axis base 8, Y-axis rails 13 and 13 are installed horizontally orthogonal to the X-axis rails 4 and 4, that is, parallel to the Y ′ axis shown in FIG. Y along the outside of 13, 13
A shaft rack 14 is provided. 15 is a Y-axis rail 13, 1
3 are stopper projections for restricting movement of the Y-axis base 17, which are provided at both ends of 3.

The Y-axis base 17 is a Y-axis base on the Y-axis base 8.
It is provided slidably along the shaft rails 13, 13, that is, along the Y ′ axis. A detector (rotary encoder) 18 is also provided on the Y-axis base 17, and a gear 19 provided on the shaft of the detector 18 is meshed with the Y-axis rack 14 so that the Y-axis rail (Y'-axis) of the Y-axis base 17 is provided. ) 1
The electromagnetic brake 20 is provided so that the amount of movement on the X-axis base 8 can be detected by engaging the shaft of the electromagnetic brake 20 with the shaft of the electromagnetic brake 20. I am able to do it.

The Z- axis base 25 is superposed on the Y-axis base 17, and the central portion of the Z- axis base 25 is pivotally supported by a vertical shaft 26 that is provided perpendicularly to the central portion of the Y-axis base 17. Is rotatably arranged on the horizontal plane on the Y-axis base 17 about a certain range. The position of the shaft 26 is
In the basic posture of the device, it coincides with the origin of the X'axis and is at a distance a from the origin of the Z'axis. 27 is a bearing, 28 is a Y-axis base 1
7 is a bearing arranged between the upper surface and the lower surface of the Z- axis base 25. Further, on the outer side of the bearing 27 of the Z axis base 25, a gear 29 which rotates together with the Z-axis base 25 around the shaft 26 is fixed, the gear 29 is Y-axis base 1
It is meshed with a detector (potentiometer) 32 attached to support pieces 30 and 31 fixed to 7 and gears 34 and 35 of an electromagnetic brake 33. This detector 32 is
The rotation angle of the Z- axis base 25 is read, and the electromagnetic brake 33 is used for fixing the rotation of the Z- axis base 25. The Z-axis bracket 38 is arranged on the Z- axis base 25, and includes a bottom surface portion 40 and both side surface portions 41, 4.
1 are connected in series.

The X-axis bracket 38 is attached to the Z- axis base 25.
Are vertically movably supported by elevating and lowering support portions 42, 42 provided upright on both sides of the. That is, the lifting support parts 42, 42 include
A bottom plate 43 fixed to the upper surfaces of both sides of the Z- axis base 25,
A support column 44 which is erected on the bottom plate 43, a top plate 45 which is arranged at the upper end of the support column 44 so as to face the bottom plate 43, and a support column 4
Two guide shafts 4 installed in parallel on both sides of 4
6, 46, a balance weight 48 slidably arranged on one of the guide shafts 46, and a wire pivotally supported by the support column 44 and locked between the balance weight 48 and the mounting portion 51 of the bracket portion 39 described below. Pulley 5 to suspend 49
0 and are provided. The mounting portion 51, which is disposed outside the side surface portions 41, 41 of the Z-axis bracket portion 38, is slidably mounted on the other guide shaft 47 of the elevating and lowering support portions 42, 42, and the left and right columns 44 are provided. , 44 are arranged along the Z-axis racks 52, 52, and are engaged with the detector (rotary encoder) 53 provided on the Z-axis bracket portions 38, 38 and the gears 55, 56 of the electromagnetic brake 54. This detector 53 is used for the Z-axis bracket 3
8 is for reading the amount of movement in the Z and axial directions, and the electromagnetic brake 54 is for fixing the Z-axis bracket portion 38. 57
Is a resistance slider made of a resin material or the like, which is slidably provided on the guide shaft 47 between the mounting portions 51, 51, and applies a sliding resistance to restrict abrupt vertical movement of the Z-axis bracket portion 38. The Z-axis bracket 39 can be fixed to the elevating / lowering support part 42 by tightly tightening the screw 58 of the split part.

The fixing ring 60 has its left and right central portions pivotally mounted on the horizontal shafts 61, 61 above the side surfaces 41, 41 of the Z-axis bracket portion 38 so that it can be lifted up and down. The centers of the gears 62, 62 are fixed. The β-axis gears 62, 62 are gears 59 of a detector 57 (rotary encoder) for reading a rotation angle and a fixed electromagnetic brake 58, which are attached to the Z-axis bracket portion 38, respectively.
It meshes with 59 '.

A rotary ring (α-axis) drive motor 63, a speed reducer 64 thereof, and a rotary ring (α-axis) are provided on the lower part of the other side of the fixed ring 60 in relation to the rotation of a rotary ring 75 described later.
Is provided with a detector (encoder) 65 for reading the rotation angle and an electromagnetic brake 66 for fixing the rotating ring (α-axis), and the horizontal shaft 61,
Drive motor 6 disposed on the lower side of the other side centering on 61
A balance weight 67 is provided in order to balance the weight with the rotating ring 75 and the I-axis plate 80 which will be described below and are provided on one side or the like.

The rotating ring 75 includes bearing bearings 76,
It is rotatably provided in the fixed ring 60 and one side portion thereof via 77, and an α-axis gear 78 is provided on the outer periphery of the other side portion, and the α-axis gear 78 is provided on the fixed ring 6.
Output gear 6 of reduction gear 64 of drive motor 63 provided in 0
8, the rotating ring 75 is adapted to rotate with respect to the fixed ring 60 as the drive motor 63 is operated, and the α-axis gear 78 has a gear 69 and an electromagnetic brake 66 provided on the shaft of the detector 65. The gear 70 provided in the shaft of the shaft meshes with the gear to read the rotation angle of the rotating ring 75 and the electromagnetic brake 66 operates to rotate the rotating ring 7.
5 can be fixed.

The I-axis plate 80 is substantially U-shaped, and the opening thereof is substantially equal to the hole diameter of the rotating ring 75. One side of the rotating ring 75 is parallel to the rotating ring 75.
It is arranged so as to be movable in the Z'-axis direction (up and down). That is, on both sides of one side of the rotating ring 75, the guide shafts 81, which are arranged along the side surface and parallel to the Z ′ axis,
81 is provided, and sliding portions 82, 82 on the I-axis plate 80 side are slidably attached to the guide shafts 81, 81.
The shaft plate 80 can move parallel to the rotating ring 75. Further, an I-axis driving motor 83 is provided on one side of the rotating ring 75, and an output gear 84 of the motor 83 meshes with an I-axis rack 85 provided in a direction perpendicular to the corresponding surface of the I-axis plate 80, and the motor is driven. The operation of 83 drives the I-axis plate 80 to move up and down. 86 is the I-axis plate 8
I-axis plate 80 mounted between 0 and rotating ring 75
Is a detector (linear potentiometer) for detecting the amount of movement of the rotating ring 75.

Further, 90 is a distance detector provided at the center of the upper portion of the I-axis plate 80, 95 is a mounting portion 96 fixed to one end of the basic base 1, and the end extending from the mounting portion 96 is inside the rotary ring 75. Is a footrest placed as a footrest 97. Reference numeral 98 denotes a foot rest 97, particularly a heel rest on which a heel is placed, and a heel load detector including a strain sensor is incorporated in the heel rest. The distance detector 90 is a known non-contact type distance detector including a laser sensor,
For example, as shown in FIG. 7, a detection unit (which is located at an angle θ with respect to the optical axis of the light projection unit 91 of the semiconductor laser light projection unit 91 and receives scattered light from the measurement point P ( Position detector) 92, and the principle of its measurement is the triangulation method. When the measurement point P moves up and down, the detection unit 92
Since the image forming point Q of is changed, the displacement A is obtained by reading the position of the point Q. In the figure, S
O is the working distance, and MR is the measurement range.

By the way, the distance detector 90 has a measurement range MR as shown in FIG. 7, and it is necessary that the measurement point P is always located within this range. Therefore, FIG.
, The output is obtained from the distance detector 90, amplified by the amplifier 93, and passed through the analog servo 94 to
The shaft motor 83 is controlled to rotate in the forward and reverse directions to move the I-axis plate 80 with respect to the rotating ring 75 to move the position of the distance detector 90 fixed to the I-axis plate 80.
Adjust so that the distance between 0 and the measurement point is within the measurement range.

Although a non-contact type distance detector is used in this embodiment, it may be a contact type. Also,
As shown in FIG. 9, detectors 9, 18, and 53 that read the movement amounts of the X ′, Y ′, and Z ′ axes, and the rotation angles of these respective axes are detected (the X ′, Y ′, and Z ′ axes are sequentially detected. Rotation angles α, β,
The output of each of the detectors 65, 57, 32, the detector 86 for reading the movement amount of the I axis, and the distance detector 90 is A / D.
The converter 111 converts the analog signal into a digital signal and inputs it to the computer device 110, and the computer device calculates the coordinates of the measurement points according to a program incorporating an arithmetic expression described later, for example.

The measurement of the three-dimensional coordinates of the object to be measured will be described below. The person to be measured places one of the left and right feet on the foot rest 97 of the foot rest 95 of the present apparatus. In this case, the foot rest is arranged in parallel with the device of the present invention so that the measurement can be performed correctly. A footrest having the same height as 95 is separately prepared, and the subject places one foot on the apparatus and one foot on the footrest so that the weight is added to both of them on average. That is, in the measurement with the device of the present invention, the load value when the weight is applied to both feet on average is obtained in advance, and the measured value of the heel load detector incorporated in the foot rest is the above-mentioned value during measurement. It is compared whether it corresponds to the measured value in the previous stage, and if the result is good, the following measurement is performed.

As shown in FIG. 10, the foot is measured by measuring points on the surface of the foot, or by continuously measuring the surface of the foot to obtain its cross-sectional shape. When the person to be measured has properly set his / her feet on the foot rest 95 fixed to the basic base 1, the moving / rotating parts of the apparatus are adjusted according to the point to be measured according to FIG. . Then, the electromagnetic brakes 11, 20, 23, 54, 58, 66 are arranged so that these parts do not move.
Fix with.

Therefore, the actual measurement will be specifically described below. In the reference posture of FIG. 1, X ', Y',
Each of the Z'orthogonal axes has a positive direction on the side facing the arrow, and the rotating ring 75, the fixed ring 60, and the Z- axis base 25 are
The clockwise direction toward the positive direction of the corresponding X ′, Y ′, Z ′ axes is defined as the plus side. Then, when measuring the foot shape, the rotation ring 75, that is, the distance detector 90 is moved from the basic posture.
Pivots by an angle theta ₁ (X 'axis angle theta ₁ rotate) rotates the fixing ring 60 by an angle theta ₂ (Y' angle theta ₂ to rotate the shaft), a Z-axis base 25 angle theta _{If it is} rotated by ₃ (the Z ′ axis is rotated by an angle γ), a point P ″ (x ”, on such a coordinate system O ″ −X ″ Y ″ Z ″ is obtained.
y ", z") is the coordinate system O'-X'Y'Z, 'of the basic posture.
To convert to the coordinates (x, y, z) of P'of

[0026]

[Equation 1]

It can be obtained by Further, regarding the method of obtaining x ″ y ″ z ″, as shown in FIG. 11, the I axis (I axis plate 80) is separated from the center 0 ″ by the distance b in the X ″ axis in this case. An axis passing through the point and parallel to Z ″, the distance detector 90 moves along this I axis. Distance detector 90 now
Let d be the length of P'L from the measurement point to the measurement point, and d "be the length of P"'L from the distance detector 90 to the intersection of X "and the I axis. When reading d ″ ′ from the reading I-axis detector 86, the Z ″ coordinate of the measurement point P ′ is z ″ = d ″ ′ − d (2). Further, x ″ of P ″ , Y ″ is x ″ = − b ... (3) y ″ = 0 ... (4), so these equations (2) to (4) are substituted, and If the readings of the X-axis, Y-axis, and Z-axis detectors 9, 18, and 53 are XR, YR, and ZR, finally, the three-dimensional coordinate value (X, Y, Z) of the point P is X = X + XM Y = y + YM Z = z + ZM

Next, in order to obtain an arbitrary cross-sectional shape of the foot, the respective parts of the device of the present invention are appropriately moved to rotate the rotary ring 75.
Make a posture according to the cross section that is to be used for measurement. Then, in this state, the rotary ring 75 is rotated once, and the distance detector 90
The surface of the foot is continuously measured with the set cross section by rotating once around the foot.

As shown in FIG. 12, the coordinates of the point P (y, z) on the YZ coordinates are expressed as y = Msin θ z = Mcos θ, so the reading θ of the detector 65 of the rotating ring 75
And readings m, m ′ of the distance detector 90 and the I-axis detector 8
By substituting M obtained from the above into the above equation, the cross-sectional shape can be obtained. In order to obtain the cross-sectional shape, a plurality of spotlights that irradiate light linearly toward the center of the rotating ring 75 at equal intervals on the circumference of the rotating ring 75 should be used to irradiate the foot. By doing so, the posture of the rotary ring 75 can be easily grasped, and the work for determining the posture can be facilitated.

[0030]

As described above, in the foot-type measuring machine of the present invention, the rotating ring takes an arbitrary posture in the three-dimensional space, and the distance detector is set at an arbitrary position on the rotating ring so that Since the foot is measured on the footrest placed at, it is possible to measure the desired measurement point without moving the foot, which is the object to be measured. An arbitrary cross-sectional shape of the foot can be easily obtained by measuring while rotating the distance detector once on the rotating ring that has an arbitrary posture in space. In general, the present invention can accurately and promptly measure a foot mold that is easily deformed by movement or application of a load.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire foot-type measuring machine according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an entire foot-type measuring machine according to an embodiment of the present invention.

FIG. 3 is a front view showing the entire foot-type measuring machine according to the embodiment of the present invention.

FIG. 4 is a plan view showing the entire foot-type measuring machine according to the embodiment of the present invention.

FIG. 5 is a side view showing the entire foot-type measuring machine according to the embodiment of the present invention.

FIG. 6 is a rear view showing the entire foot-type measuring machine according to the embodiment of the present invention.

FIG. 7 is an explanatory view of the principle of the distance detector.

FIG. 8 is a drive circuit diagram of an I-axis plate.

FIG. 9 is a connection diagram of a detector and a verification device.

FIG. 10 is an explanatory diagram of a foot measurement point and a measurement method.

FIG. 11 is an explanatory diagram for coordinate calculation.

FIG. 12 is an explanatory diagram in the case of cross-section measurement.

[Explanation of symbols]

1 Basic Base 8 X Axis Base 9 X Axis Detector 17 Y Axis Base 18 Y Axis Detector 25 Z Axis Base 26 Vertical Axis 32 β Axis Detector 38 Z Axis Bracket 53 Z Axis Detector 60 Fixing Ring 61 , 61 Horizontal axis 65 α-axis detector 75 Rotating ring 80 I-axis plate 86 I-axis detector 90 Distance detector 95 Footrest 97 Footrest 110 Computing device

Claims (1)

(57) [Scope of utility model registration request] 1. An X provided with a basic base, a detector which is provided so as to be horizontally movable in one direction on the basic base, and which detects a movement amount thereof, and an electromagnetic brake which stops and locks the movement. An axis base, a detector that is horizontally movable on the X-axis base in a direction orthogonal to the X-axis base movement direction, and that detects the movement amount, and an electromagnetic brake that stops and locks the movement amount. A Y-axis base provided with, a detector movably provided on the Y-axis base in the vertical direction and detecting the amount of movement, and an electromagnetic brake that stops and locks the amount of movement. A Z-axis bracket, a central part of the Z-axis bracket was vertically fixed on the Y-axis base, a detector for detecting a rotation angle, and an electromagnetic brake for stopping and locking the rotation were provided. Z axis base and A fixing ring that locks the center of both sides with horizontal axes on the Z-axis bracket, a detector that is rotatably provided along the circumference of the fixing ring, and that detects the rotation angle of the fixing ring, and the rotation of the detector is stopped. And an I-axis plate provided with a detector that is movable along the side surface of the rotation ring and that detects the amount of movement, and A distance detector attached to the center of the rotary ring and a foot rest for placing a foot to be measured are fixedly arranged in the rotary ring, and a heel rest and this heel rest. A footrest provided with a heel load detector used to determine whether or not it is possible to move to the measurement of the incorporated foot, the X-axis base, and Y
Measurement of the measurement target from the detection values of the detector and the distance detector that detect the displacement amounts of the axis base, the Z-axis bracket, and the I-axis plate, and the angle displacement amounts of the Z-axis base, the fixed ring, and the rotating ring. A foot-type measuring machine comprising a device that calculates the coordinates of points.