JP3440693B2 - Tilt measuring instrument - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt angle measuring device for measuring a tilt angle of an object to be measured, and more specifically, a tilt angle suitable for measuring the tilt angle of a cylindrical or conical object to be measured. It relates to measuring instruments.

[0002]

2. Description of the Related Art Conventionally, the following methods (1) to (3) have been known as an inclination angle measuring device for measuring the inclination angle of an object standing upright such as a tape guide post of a video deck. There is.

(1) Dial gauge measuring device (butting type) In FIG. 4, a gauge holder 31 installed on a base 30.
A dial gauge 32 is attached to the gauge holder 3
On the front side of 1, a measurement reference portion 33 is provided on the lower side and a dial gauge probe 34 is provided on the upper side. Gauge holder 31
Is slid in the direction of the object to be measured 21, and the measurement reference portion 33
The dial gauge probe 34 is abutted against the side surface of the object to be measured 21, and the tilt angle of the object 21 to be measured is measured by the amount of displacement of the dial gauge probe 34.

(2) Dial gauge measuring device (peak point detection system) In FIG. 5, a pair of dial gauges 35 are mounted on a base 30.
Slide body 3 mounted on base 30 with 36 attached
7, the object to be measured 21 is attached, the slide body 37 is slid in the direction of the measuring elements 38 and 39 of the dial gauges 35 and 36, and the object to be measured 21 is brought into contact with each of the measuring elements 38 and 39. The inclination angle is evaluated by the difference between the measured values of 35 and 36.

(3) Three-dimensional measuring device The cross-sectional dimensions of any two points of the object to be measured are measured to calculate a virtual center line, and the inclination angle of this center line is calculated.

[0006]

In the dial gauge measuring instrument of the above (1), when the object to be measured 21 is cylindrical or conical, the measurement reference portion 33 and the tip portion of the dial gauge probe 34 are Even if the position of contacting the object to be measured 21 is slightly displaced, the measured value fluctuates, which is not suitable for precise measurement of the cylindrical or conical object to be measured 21. Further, the dial gauge measuring instrument of (2) moves the object to be measured 21 while reading the indication values of the dial gauges 35 and 36 when the object to be measured 21 has a cylindrical or conical shape, and Since the difference between the maximum measurement values of the dial gauges 35 and 36 is calculated and converted into an angle, there is a problem that the measurement takes time.

Therefore, although the three-dimensional measuring instrument of (3) has no choice but to be used for precise measurement of a cylindrical or conical object to be measured, this measuring instrument is complicated in measurement and calculation. It requires a lot of measurement knowledge and skill, and it is difficult to move the measuring instrument, so it can only be measured in limited places. There was a problem. The present invention has been made by paying attention to the above points, and can accurately measure the inclination angle of a cylindrical or conical object to be measured in a short time, and is inexpensive, compact, and highly versatile. An object is to provide an angle measuring device.

[0008]

In order to achieve the above object, the present invention is a tilt angle measuring device for measuring the tilt angle of an object to be measured, which is mounted on a gauge holder and a gauge holder. A gauge, and a measuring member which constitutes a part of the gauge and displays the displacement amount on the display section of the gauge by displacing the gauge.
Measurement that is supported swingably by inserting the fixed side measuring element protruding from the gauge holder in the direction orthogonal to the displacement direction of the measuring member and the base of the fixed side measuring element and projecting the tip end The gauge is equipped with a probe holder and a oscillating probe that protrudes in parallel to the tip of the stationary probe at the probe holder location apart from where the stationary probe is inserted.
The gauge holder is moved to the side of the object to be measured, and the oscillating side measuring element and the fixed side measuring element are abutted against the object to be measured,
The oscillating state of the tracing stylus holder is converted into the displacement amount of the measuring member, and this displacement amount is displayed on the gauge display section with the minimum scale of the gauge.
Is configured to be displayed as 1 minute (1/60 degree) .

According to the present invention, when the gauge holder is moved to bring the oscillating-side measuring element and the fixed-side measuring element into contact with the object to be measured, the measuring element holder follows the inclination of the object to be oscillated. To do. The measuring member of the gauge detects the swinging state of the tracing stylus holder at this time, and the displacement amount of the measuring member is displayed on the gauge.
By reading this displayed value, the tilt angle of the measured object can be measured.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the drawings. FIG. 1 is a perspective view of an embodiment of a tilt angle measuring device of the present invention, and FIG. 2 is a side view of a portion of a tracing stylus holder. As shown in FIG. 1, a linear motion type bearing 2 is mounted on a base 1, a gauge holder 4 is linearly supported on the linear motion type bearing 2, and a dial gauge is mounted on the gauge holder 4. 5 is attached. The object to be measured 21 whose inclination angle is measured is erected on the flat body 20, and the object to be measured 21 is placed on the support base 22 of the base 1 together with the flat body 20 and fixed in an upright state. The gauge holder 4 is movably supported in a direction (front-rear direction) in which the gauge holder 4 approaches and separates from the measured object 21.

The dial gauge 5 displays a case 6, a measuring lever 7 (corresponding to a measuring member) mounted on the tip of the case 6 so as to be swingable in a vertical plane, and a displacement amount of the measuring lever 7. The display unit 8 is provided. The gauge holder 4 is pulled forward (leftward in FIG. 1) by a tension spring 10 hung between the gauge holder 4 and a pole 9 fixed to the base 1. The pin 11 is attached to the gauge holder 4 to the side.
Is projected.

A shaft 12 is provided at a side portion of the linear motion type bearing 2.
Is erected, and an eccentric cam 13 is supported on the shaft 12. A roll knob 14 is attached to the eccentric cam 13, and the eccentric cam 13 is rotated by manually operating the roll knob 14. The pin 11 is in sliding contact with the eccentric cam 13 supported by the shaft 12. Therefore, when the roll knob 14 is rotated, the eccentric cam 13 rotates, and the gauge holder 4 linearly moves via the pin 11 following this. It is supposed to do.

A support portion 4a is formed at the front of the gauge holder 4, and a cylindrical fixed-side measuring element 16 is horizontally projected from the supporting portion 4a toward the side, and the fixed-side measuring element 16 is measured. The child holder 15 is swingably supported. The tracing stylus holder 15 has a vertically long rectangular parallelepiped shape,
6 is a penetrating bottom part of the tracing stylus holder 15
A cylindrical rocking side probe 17 is provided on the upper part of the probe holder 15 in parallel with the fixed probe 16 so as to project therefrom.

The tip of the measuring lever 7 is attached to the tracing stylus holder 1.
5 is contacted with the rear surface of the upper portion of the measurement lever 5, and the measuring element holder 15 is biased in the direction in which the upper portion inclines forward (to the left in FIG. 1) around the fixed-side measuring element 16 under the pressure measured by the measuring lever 7. There is. Stoppers 19a and 19b located on the front and rear surfaces of the tracing stylus holder 15 are formed on the support portion 4a,
The stopper portion 19a, 19b allows the tracing stylus holder 15
The swing range of is regulated (see FIG. 2).

In this embodiment, the measuring section 3 is composed of the gauge holder 4, the dial gauge 5, the measuring element holder 15, the fixed measuring element 16, the oscillating measuring element 17, and the like.

Next, the operation of the tilt angle measuring device will be described.
The gauge holder 4 is pulled by the tension spring 10 by setting the object to be measured 21 standing upright on the flat body 20 on the support base 22 and rotating the eccentric cam 13 while holding the roll knob 14, as shown in FIG. To the left, and the swing-side probe 17 comes into contact with the object to be measured 21 first. The oscillating measuring element 17 receives the reaction force of the object to be measured 21, and the measuring element holder 15 that supports the oscillating measuring element 17 oscillates around the fixed measuring element 16 in accordance with the inclination angle of the measuring object 21. Perform dynamic action.

Finally, the fixed side probe 16 hits the object to be measured 21, and the movement of the gauge holder 4 is completed. The swing amount of the tracing stylus holder 15 at this time is detected by the measuring lever 7 of the dial gauge 5, and the swing displacement amount of the measuring lever 7 is displayed on the display portion 8 of the dial gauge 5. By reading the indicated value on the display unit 8, the inclination angle of the DUT 21 can be measured.

In order to perform the above operation,
The spring force of the tension spring 10 is equal to or higher than the measurement pressure of the measuring lever 7, and the elastic deformation amount of the object to be measured 21 when the both measuring elements 16 and 17 are applied to the object to be measured 21 affects the measured value. It is necessary to set it to the extent that it does not reach. Dial gauge 5
Is measured by the measuring lever 7 and the swinging center of the tracing stylus holder 15 in order to correspond the reading value (generally expressed in μm) with the tilt angle of the DUT 21. It is preferable to set the distance between the contact point that contacts the child holder 15 as follows.

FIG. 3 is an explanatory view showing the relationship between the tracing stylus holder and the measuring lever. In FIG. 3, the dial gauge 5
Is the minimum scale (the minimum displacement of the measuring lever 7), the center O of the fixed-side measuring element 16 and the measuring element holder 15 of the measuring lever 7.
When the distance between the contact point P and the contact point P is L and the minimum reading angle of the tracing stylus holder 15 is θ, Ltan θ = x, and thus L = x / tan θ 2. It should be noted that although the above L slightly varies depending on the displacement of the measuring lever 7, since it is a negligible minute value, the above formula is established. That is, the distance L must be x / tan θ in order to match the minimum scale of the dial gauge 5 with the desired minimum reading angle.

For example, if the dial gauge minimum scale x is 0.
002mm, minimum reading angle is 1 minute (1/60 degree)
, L = 0.002 / tan (1/60) ≈
It becomes 6.9 mm. Therefore, in this example, the distance L between the center O of the fixed-side probe 16 and the contact point P of the measuring lever 7 may be set to 6.9 mm. That is, the distance L may be set according to the minimum dial gauge scale, that is, the degree to which high accuracy is required.

As described above, according to the embodiment of the present invention, the fixed-side measuring element 16 and the swing-side measuring element 17 of the measuring element holder 15 are brought into contact with the object to be measured 21 to shake the measuring element holder 15. Since the displacement amount of the movement is detected, the contact point at the reference point (the contact point of the fixed side probe 16) and the contact point at the measurement point (the contact point of the oscillating probe 17) are measured with respect to the DUT 21. Since the direction deviation (the deviation in the direction perpendicular to the object to be measured 21) is eliminated and the measurement value does not include the measurement direction deviation component, the tilt angle can be measured with high accuracy.

Further, since it is possible to perform the measurement only by reading the indicated value of the dial gauge 5 and the selection of the measuring method and the conversion of the measured value are not required unlike the conventional three-dimensional measuring instrument, the measuring knowledge and skill are not required. Therefore, the tilt angle can be measured easily and in a short time. Further, since a general dial gauge can be used as the dial gauge 5, it can be manufactured at low cost. Furthermore, by devising the layout of the dial gauge 5, it is possible to make it compact as a whole, and therefore, the measuring instrument can be easily moved, and the place of use is not limited.

In the above embodiment, an example using the tension spring 10, the pin 11 and the eccentric cam 13 as the driving means is shown, but the driving means is not limited to this, and may be driven by, for example, a motor or an air cylinder. Alternatively, driving means such as a robot may be used as described later. The dial gauge 5 may be of a type that mechanically detects the amount of displacement of the measuring lever 7 or a type that electrically detects it. Either one may be used, but an electric type gauge may be used. If
It is possible to import measurement data into an electronic computer or the like and automate the processing such as data collection and statistical management. Further, the measuring unit 3 including the gauge holder 4 and the dial gauge 5 is attached to, for example, an arm of a robot or the like so as to reciprocate in any direction, and a plurality of DUTs in any direction are targeted. Of course, it is also possible to use a simple three-dimensional tilt angle measuring device. Further, in the embodiment, the case where the lever gauge is used as the dial gauge has been described, but the dial gauge used in the present invention is not limited to the lever gauge, and various dial gauges as shown in FIGS. It is also possible to use other types of dial gauges.

[0024]

As is apparent from the above description, the present invention is
A tilt angle measuring device for measuring a tilt angle of an object to be measured, the gauge holder, a gauge attached to the gauge holder, and a part of the gauge that is displaced to display the amount of displacement. The measuring member to be displayed on the section, the fixed-side measuring element protruding from the gauge holder in a direction orthogonal to the displacement direction of the measuring member, and the base of the fixed-side measuring element are inserted and the tip of the measuring element is projected. The measuring element holder that is swingably supported, and the measuring element holder that is provided in parallel with the tip of the fixed measuring element at the measuring element holder location apart from where the fixed measuring element is inserted. The gauge is a dial gauge, the gauge holder is moved to the side of the object to be measured, and the oscillating-side measuring element and the fixed-side measuring element are abutted against the object to be measured. It is converted to the displacement of the measuring member its weight this displacement in the display section of the gauge Minimum scale of the gauge is 1 minute (1 /
60 degrees) . Therefore, since the displacement amount of the tracing stylus holder including the fixed side tracing stylus and the swinging side tracing stylus is displayed on the display part of the gauge by the measuring member, there is no direction deviation with respect to the DUT, and particularly the cylindrical shape Alternatively, it becomes possible to measure the inclination angle of the conical object to be measured with high accuracy. Further, since the measurement can be performed only by reading the value of the gauge and the selection of the measurement method and the conversion of the measured value are not required, the measurement knowledge and skill are not required, and the inclination angle can be measured easily and in a short time. Also, since a general dial gauge can be used as a gauge, it can be manufactured at low cost,
It is possible to make it compact as a whole, and the measuring instrument can be easily moved, and the place of use is not limited.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a tilt angle measuring device of an object to be measured of the present invention.

FIG. 2 is a side view of a portion of a tracing stylus holder.

FIG. 3 is an explanatory diagram showing a relationship between a tracing stylus holder and a measuring lever.

FIG. 4 is a perspective view of a conventional inclination angle measuring device for an object to be measured.

FIG. 5 is a perspective view of a conventional inclination angle measuring device for an object to be measured.

[Explanation of symbols]

2 ... Direct acting type bearing, 3 ... Measuring part, 4 ... Gauge holder, 5 ... Dial gauge, 7 ... Measuring lever, 1
0 ... tension spring (reciprocating means), 11 ... pin (reciprocating means), 13 ... eccentric cam (reciprocating means), 16 ... fixed side probe, 17 ... rocking side probe, 19a , 19b ...
... Stopper, 21 ... Object to be measured.

Continuation of the front page (56) References JP-A-61-245004 (JP, A) Jitsukaihei 3-52605 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G01B 3 / 00-5/30 G01B 21/00-21/32

Claims (6)

(57) [Claims] 1. A tilt angle measuring device for measuring a tilt angle of an object to be measured, comprising: a gauge holder, a gauge attached to the gauge holder, and a part of the gauge to be displaced. A measuring member for displaying the displacement amount on the display part of the gauge, a fixed-side measuring element protruding from the gauge holder in a direction orthogonal to the displacement direction of the measuring member, and a base portion of the fixed-side measuring element is inserted. And the tip of the fixed-side probe is parallel to the tip of the fixed-side probe, and the probe-holder that is swingably supported by protruding the tip of the fixed-side probe is separated from the place where the fixed-side probe is inserted. The gauge is a dial gauge, the gauge holder is moved to the side of the object to be measured, and the swing side measuring element and the fixed side measuring element are covered. It is struck by the object to be measured, The state is converted into the displacement amount of the measuring member, and the displacement amount is displayed on the display portion of the gauge with the minimum scale of 1 minute.
A tilt angle measuring instrument, characterized in that it is configured to be displayed as (1/60 degree) . 2. The object to be measured is placed upright on a base, and the gauge holder is movably supported on the base so as to move away from and approach the object to be measured. Furthermore,
The tilt angle measuring device according to claim 1, further comprising reciprocating means for reciprocating the gauge holder on a base. 3. The reciprocating means includes a pin protruding from the gauge holder in a direction orthogonal to the moving direction, a spring for urging the gauge holder toward the object to be measured, and a cover of the pin. 3. An eccentric cam rotatably supported by a shaft extending vertically, which is disposed on the side of the object to be measured so as to come into contact with the pin, and an operating portion for rotating the eccentric cam. Tilt angle measuring device. 4. The tilt angle measuring device according to claim 1, wherein stoppers are provided on both sides of the tracing stylus holder in the swinging direction to restrict the swinging range thereof. 5. The measuring member is composed of a measuring lever swingably provided on a gauge, and when the minimum scale of a display portion of the gauge is x and the minimum reading angle of the tracing stylus holder is θ, The distance L between the center of the fixed side probe and the contact point where the measuring lever contacts the probe holder is x /
The tilt angle measuring device according to claim 1, wherein the size is set to tan θ. 6. The tilt angle measuring device according to claim 1, wherein both the fixed-side measuring element and the swing-side measuring element are formed in a cylindrical shape.