JP2002250601A - Gap-measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an handleable gap measuring device capable of acquiring highly accurate measured value, regardless of the measurement location or the minute gap. SOLUTION: A measuring piece 4, having an inclined plane 4d inclined toward the tip at a fixed angle θ, for being inserted between a measuring object reference plane Na and a measuring object part Ma of an object M is shifted by a slider 2, until the inclined plane 4d butts the measuring object part Ma. The gap quantity Gx can be calculated, based on a shift quantity D of the measuring piece 4 from a measurement reference position S, the inclination angle θ of the inclined plane 4d or the like. Hereby, the gap quantity Gx can be measured easily and highly accurately by only inserting the measuring piece 4, even if the gap is too small or the location is difficult to make measurement at, using a caliper or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for setting a gap between a reference surface and a cutting blade when a tongue-shaped projection is formed by shaving the surface of a metal material such as aluminum using a cutting blade. The present invention relates to a gap measuring device.

[0002]

2. Description of the Related Art Generally, in measuring the gap between a reference surface and a cutting blade as described above, for example, a caliper with a dial or a digital caliper is often used because of relatively high measurement accuracy and easy handling. . However, there are situations in which it is difficult to insert the inner jaw of the caliper due to the gap being considerably small or the spatial restriction of the measurement location. In such a case, conventionally, the gap is measured by inserting a taper gauge such as a steel measure tapered at a certain angle between the reference surface and the cutting blade. Is the current situation.

[0003]

However, in this taper gauge, the minimum scale unit is generally considerably larger than the caliper, and is set to, for example, mm. Therefore, it is expected that a highly accurate measurement value can be obtained. Therefore, it is difficult to use in applications where the accuracy of the gap is important.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is an object of the present invention to provide an easy-to-use gap measuring apparatus capable of obtaining a highly accurate measured value irrespective of a measuring place and a size of a gap. Make it an issue.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a gap measuring apparatus for measuring a gap between a reference plane to be measured and an object. A slider held slidably along a direction, a positioning member for positioning the apparatus body at a measurement reference position, and configured to be displaceable in the longitudinal direction along with a moving operation on the slider, A measurement piece inserted between the measurement target reference plane and the object at the time of measurement, and the positioning member is formed along the longitudinal direction and is brought into contact with the measurement target reference plane at the time of measurement. And a measurement position setting surface which is formed along a direction perpendicular to the measurement target reference surface and which comes into contact with the measurement target portion of the object from the insertion direction at the time of measurement. , On the measuring piece On the side opposite to the object, an inclined surface inclined at a constant angle is formed, and at the time of measurement, the supported surface of the positioning member is brought into contact with the measurement target reference surface, and the measurement position setting surface is used for measuring the object. In a state in which the measuring piece inserted between the reference plane for measurement and the object in the longitudinal direction is in contact with the target section from the insertion direction, the inclined surface contacts the measurement target section of the object. Utilizing the relationship between the amount of displacement of the measurement piece in the longitudinal direction and the angle of the inclined surface, the gap amount between the measurement target reference plane and the object can be measured. Is solved by a gap measuring device.

According to this gap measuring device, the measuring piece is inserted between the reference plane of the object to be measured and the object so that the supported surface of the positioning member abuts on the reference plane of the object to be measured, while the measuring position of the positioning member is measured. By operating the slider to shift the measurement piece from a state where the setting surface is in contact with the measurement target portion of the object, and bringing the inclined surface into contact with the measurement target portion of the object, The amount of displacement from the measurement position setting plane is measured. From the relationship between the displacement amount and the inclination angle, a part or all of the gap amount between the measurement target reference plane and the object is obtained.

That is, even in a situation where the gap between the measurement target reference plane and the object is too small, or where it is difficult to measure with a vernier caliper, the measurement piece is inserted between the measurement target reference plane and the object. The gap can be measured simply by moving the gap, and the amount of displacement in the length direction of the measuring piece larger than the size of the gap is converted into a gap using the angle of the inclined surface, so a high reading that cannot be obtained with a conventional taper gauge Accuracy can be ensured.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing a gap measuring apparatus according to one embodiment of the present invention.

The gap measuring apparatus according to this embodiment is used in a process of manufacturing an aluminum heat exchanger having a large number of tongue-shaped shaving fins on its surface. For this purpose, it is used to measure the gap amount Gx between the main surface Na of the mold base N, which is the reference surface to be measured, and the cutting edge Ma of the cutting blade M. Of course, the present invention is not limited to measuring the gap amount Gx between the main surface Na of the mold base N and the cutting edge Ma of the cutting blade M, but may be used for measuring the gap between various measurement target reference surfaces and an object. Applicable.

In FIG. 1, the gap measuring device according to this embodiment utilizes the assets of a digital caliper, and its main parts are a main scale 1 as a generally long device main body, A slider 2, a positioning member 3 for determining a measurement reference position S, a measuring piece 4, and an arithmetic unit 10 for calculating a part or all of the gap amount Gx or performing an arithmetic operation necessary for obtaining the gap amount Gx. And a display unit 5 for numerically displaying data.

The surface of the main scale 1 (one surface in the thickness direction)
A slider 2 is mounted on the side, and a depth bar 12 for depth measurement is provided on the back surface (the other surface in the thickness direction) of the main scale 1 along the front-rear direction (the directions of arrows a and b). It is slidably held.

The slider 2 is fitted so as to hold both ends of the main scale 1 in the width direction (also referred to as the vertical direction). Direction). The depth bar 12 is connected to the slider 2,
The rear end face 1c of the main scale 1 according to the moving operation of the slider 2
It is set to be able to advance and retreat from. This slider 2
A finger rest 2 for facilitating sliding operation
1 is formed, and a set screw 22 for temporarily fixing the slider 2 to the main scale 1 is screwed to the upper end surface.

Reference numerals 6 and 7 denote a pair of fixed-side and movable-side inner jaws. The fixed-side inner jaw 6 is fixed to the front end 1a of the main scale 1 with its base end protruding upward. The movable inner jaw 7 is integrally provided at the front end of the slider 2 with its base end protruding upward.

Reference numerals 8 and 9 denote a pair of fixed-side and movable-side outer jaws. The fixed-side outer jaws 8 are fixed to the front end of the main scale 1 with their base ends protruding downward. The movable outer jaw 9 is fixed to the slider 2 at its proximal end in a state of protruding downward.

In this embodiment, in order to avoid complication of the structure, the positioning member 3 and the measuring piece 4 are sacrificed at the expense of the functions of the pair of fixed and movable outer jaws 8 and 9. Although priority is given to attaching to the main scale 1 and the slider 2 respectively, a configuration in which the functions of the outer jaws 8 and 9 on the fixed side and the movable side can be utilized.

The positioning member 3 is formed of a square metal plate or the like, and is located at the front end 1a of the main scale 1 and protrudes downward, and its base end 3a is connected to the front end 1a of the main scale 1. It is fixed to. The distal end (lower end) 3b of the positioning member 3 is formed in a substantially rectangular plate shape. The lower end surface of the positioning member 3 along the longitudinal direction is configured as a supported surface 3c which comes into contact with the mold base main surface Na during measurement, while being perpendicular to the mold base main surface Na. The front end face is configured as a measurement position setting surface 3d which comes into contact with the cutting edge Ma of the cutting blade M in the direction of arrow a during measurement.

It is also possible that the front end of the main scale 1 has an integral structure which also serves as the positioning member 3.

The measuring piece 4 is provided on the mold base main surface Na.
And between the cutting edge M of the cutting blade M and
It comprises a connecting portion 4a connected to the lower end surface of the slider 2 and a distal end portion 4b which is connected to the lower end portion of the connecting portion 4a and extends in the direction of the positioning member 3 (direction of arrow a). The lower end surface of the tip 4b of the measuring piece 4 along the front-rear direction is configured as a sliding contact surface 4c that comes into contact with the mold base main surface Na at the time of measurement, while the cutting blade M of the tip 4b. The inclined surface 4d which approaches the sliding contact surface 4c at a fixed angle θ as approaching the tip end side.
Is configured as That is, the inclined surface 4d is a hypotenuse of a right triangle having the sliding contact surface 4c as a base, as described later. The tip of the tip 4b in the protruding direction is a chamfer 4e that is chamfered vertically. Furthermore, when the slider 2 is moved backward (in the direction of the arrow b) to a predetermined position (for example, the position of the memory of 100 mm), as shown in FIG. 4f of the extension line of the slope and the extension line of the inclined surface 4d
However, the mounting state is designed so that it matches the measurement position setting surface 3d of the positioning member 3.

As shown in FIG. 2, the display unit 5 includes a display driving circuit 5a and a display 5b such as a liquid crystal (LCD). The displacement amount D of the piece 4 is numerically displayed on the display 5b. Display drive circuit 5a
Is built in the slider 2 also serving as a display unit case together with the calculation unit 10, while the display body 5 b is disposed on the surface of the slider 2.

The surface of the slider 2 is provided with a display changeover switch 24 for switching measurement units and the like in addition to the power switch 23. Of course, it is possible to dispose the display unit 5 on the main scale 1 side. However, if the display unit 5 is provided on the slider 2 side as in this embodiment, there is no need to route external wiring.

The calculating section 10 calculates the amount of displacement D of the measuring piece 4 from the measurement reference position S when the inclined surface 4d comes into contact with the cutting edge Ma of the cutting blade M as the measuring piece 4 moves forward. The mold base main surface Na and the cutting edge M are calculated using the displacement amount D and the inclination angle θ of the inclined surface 4d.
This is for calculating a gap amount Gx and the like with respect to a.

Next, a measurement procedure using the gap measuring apparatus having the above-described configuration will be described.

The measured values obtained by using the inner jaws 6 and 7 and the depth bar 12 are also displayed on the display unit 5. However, since these are not intended, the description thereof will be omitted.

First, an initial setting for gap measurement is performed.
Specifically, the measuring piece 4 is moved backward by operating the slider 2, and a scale-equivalent position opened by, for example, 100 mm is displayed as “0 mm”. Therefore, the position of the original scale of 0 mm is "-100 mm". At this time, as shown in FIG. 3, the intersection 4f of the extension of the sliding contact surface 4c and the extension of the inclined surface 4d in the measurement piece 4 matches the measurement position setting surface 3d of the positioning member 3.

A gap measuring operation is performed in this state. First, the supported surface 3c of the positioning member 3 is moved to the mold base main surface N.
a, the sliding contact surface 4c of the measuring piece 4 also becomes the main surface N
a. In this state, the entire apparatus is moved forward (in the direction of arrow a) so that the tip 4b of the measuring piece 4 is inserted between the main surface Na and the cutting edge Ma of the cutting blade M, and is shown by a solid line in FIG. As described above, the measurement position setting surface 3d of the positioning member 3
Is brought into contact with the cutting edge Ma of the cutting blade M, and this position is set as the measurement reference position S.

In this state, the slider 2 is operated to move the measuring piece 4 forward, and the inclined surface 4d of the measuring piece 4 is moved.
As shown by the chain line in FIGS. 1 and 3, the displacement D from the measurement reference position S of the measurement piece 4 is measured when the measurement piece 4 is brought into contact with the cutting edge Ma, and the displacement D is displayed on the display 5b as a numerical value. Is displayed.

Here, as shown in FIG.
d is a predetermined value, the gap amount G between the die base main surface Na and the cutting edge Ma at the measurement reference position S is determined.
x is obtained from the following equation.

Gx = D · tan θ The inclination angle θ may be set arbitrarily.
If nθ is set to an angle θ at which it becomes 1/10, for example, the gap amount Gx becomes the displacement amount D × 1/10 of the measuring piece 4.
Is calculated from

Now, for example, "-64.
When "50" is displayed, it is understood that the gap amount Gx is 6.45 mm because tan θ is set to 1/10.

Here, since the surface of the measuring piece 4 facing the cutting edge Ma is formed as an inclined surface 4d approaching the die base surface Na toward the tip, the surface of the die base surface Na and the cutting edge Ma are formed. Even when the gap between them is very small or when a normal caliper cannot be used in the position,
Is inserted between the mold base surface Na and the cutting edge Ma, the gap measurement can be performed as described above. If the minimum scale unit is set to about the normal caliper, it is possible to obtain a measured value with higher accuracy than a taper gauge or the like. Moreover, since the gap amount Gx is obtained by using the displacement amount D of the measurement piece 4 that is larger than the gap amount Gx, measurement with higher accuracy can be performed.

Further, since the measurement data is displayed on the display 5b, the displayed numerical value can be read even in a state away from the measurement position, and there is no difficulty in reading as in a taper gauge. In particular, if a conventional caliper structure is used as in this embodiment, it can be handled with the same ease as a caliper.

FIG. 4 shows another embodiment.
In this embodiment, the measuring piece 4 moves the slider 2 backward to a predetermined position (for example, a memory position of 100 mm) (arrow b
The mounting state is designed so that the chamfered portion 4e at the tip of the measuring piece 4 coincides with the measuring position setting surface 3d of the positioning member 3 when the measuring piece 4 is moved in the direction (direction).

A method of using the gap measuring apparatus shown in FIG. 4 will be described. First, for the initial setting, the slider 2 is operated to move the measuring piece 4 backward, for example, by 100 mm.
The display position corresponding to the opened scale is set to “0 mm”. At this time, as described above, the chamfered portion 4 at the tip of the measuring piece 4
e coincides with the measurement position setting surface 3d of the positioning member 3.
Next, the supported surface 3c of the positioning member 3 and the sliding surface 4c of the measuring piece 4 are brought into contact with the mold base main surface Na. In this state, the entire apparatus is moved forward (in the direction of arrow a) so that the tip 4b of the measuring piece 4 is inserted between the main surface Na and the cutting edge Ma of the cutting blade M, and is indicated by a solid line in FIG. As described above, when the measurement position setting surface 3d of the positioning member 3 is brought into contact with the cutting edge Ma of the cutting blade M, this position is set as the measurement reference position S.

In this state, the slider 2 is operated to move the measuring piece 4 forward, and the inclined surface 4d of the measuring piece 4 is moved.
As shown by the dashed line in FIG. 4, the displacement D from the measurement reference position S of the measurement piece 4 is measured when the measurement piece 4 is brought into contact with the cutting edge Ma, and the displacement D is numerically displayed on the display 5b. .

Here, the gap amount Gx between the die base main surface Na and the cutting edge Ma at the measurement reference position S is determined by the measurement piece 4
G is the distance between the upper edge of the chamfered surface 4e and the edge Ma,
Assuming that the height of e is g, it is obtained from the following equation.

Gx = G + g = D · tan θ + g If the tan θ is set to, for example, an angle θ of 1/10, the distance between the upper edge of the chamfered surface 4 e and the cutting edge Ma is G.
Is calculated from the displacement amount D × 1/10 of the measurement piece 4. Now, if, for example, “−64.50” is displayed on the display 5b, since tan θ has been reduced to 1/10, G
Is found to be 6.45 mm.

The gap amount Gx can be obtained by adding a known height g of the chamfered surface 4e to the value of G in advance.

In the above embodiment, the displacement D of the measuring piece 4 is displayed on the display 5b. However, the displacement D and the angle θ of the inclined surface 4d of the measuring piece 4 are required. For example, the arithmetic unit 10 may calculate the gap amount Gx by using other parameters such as the height g of the chamfered surface 4e, and the calculated gap amount Gx may be directly displayed on the display 5b. .

When it is necessary to read the numerical value displayed on the display 5b from the back side of the sheet of FIG. 1, the same configuration as described above may be made by using a vernier caliper. Of course, a configuration may be adopted in which a display surface is also provided on the back side of the display unit 5 so that a displayed numerical value can be read without using a reverse-handed caliper.

[0041]

As described above, according to the present invention, by operating the slider slidably held in the long apparatus main body, the slider is moved between the measurement target reference plane and the object measurement target portion. The measurement piece to be inserted is advanced until its inclined surface hits the measurement target portion of the object, and the measurement target reference surface and the object are determined based on the amount of displacement of the measurement piece from the measurement reference position and the inclination angle of the inclined surface at that time. Since it is configured to determine the amount of gap between the, the gap between the measurement target reference plane and the object is too small, even in situations where it is difficult to measure with a vernier caliper, if the measurement piece can be inserted, The amount of gap can be easily measured and it is easy to use.In addition, the amount of displacement in the length direction of the measuring piece that is larger than the size of the gap is converted into a gap using the angle of the inclined surface, which cannot be obtained with a conventional taper gauge High reading accuracy can be secured .

[Brief description of the drawings]

FIG. 1 is a side view showing a gap measuring device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the gap measuring device.

FIG. 3 is an explanatory view of a main part of the gap measuring device.

FIG. 4 is an explanatory diagram of a main part of a gap measuring device according to another embodiment.

[Explanation of symbols]

 1 ... Main body 2 ... Slider 3 ... Positioning member 3c ... Supported surface 3d ... Measurement position setting surface 4 ... Measurement piece 4c ... Sliding contact surface 4d ... Slope surface 5 ... Display unit 10 ... Calculation unit D ... ... Amount of displacement of measurement piece Gx... Gap amount M... Object Ma...・ Measurement reference plane S ・ ・ ・ ・ ・ ・ ・ ・ ・ Measurement reference position

Claims (1)

[Claims] 1. A gap measuring apparatus for measuring a gap amount between a reference plane to be measured and an object, wherein the gap measuring apparatus is slidable along the longitudinal direction of the apparatus main body. A held slider, a positioning member for positioning the apparatus main body at a measurement reference position, and configured to be displaceable in the longitudinal direction along with a movement operation on the slider, and the measurement target reference surface during measurement. A measurement piece inserted between the measurement object and the object; and the positioning member has a supported surface formed along the longitudinal direction and abutting on the measurement target reference surface during measurement, and A measurement position setting surface is formed along a direction perpendicular to the target reference plane, and a measurement position setting surface that is in contact with the measurement target portion of the object from the insertion direction during measurement is formed.
The measurement piece has an inclined surface that is inclined at a fixed angle on the side facing the object. During measurement, the supported surface of the positioning member is brought into contact with the reference surface to be measured, and the measurement position is set. In a state where the surface is in contact with the measurement target portion of the object from the insertion direction, with the displacement in the longitudinal direction of the measurement piece inserted between the measurement target reference surface and the object, the inclined surface of the object is Utilizing the relationship between the amount of displacement of the measurement piece in the longitudinal direction when it comes into contact with the measurement target portion and the angle of the inclined surface, the gap amount between the measurement target reference plane and the object can be measured. A gap measuring device characterized by the above-mentioned.