JP2912491B2 - Dimension measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dimension measuring apparatus, and more particularly to a dimension measuring apparatus for measuring the dimensions of each section of a profiled strip having a thick portion on one surface.

[0002]

2. Description of the Related Art To measure the dimensions of each section of a profiled section having a section having a thickness different in the width direction on one surface, for example, having a T-shaped section, conventionally, a micrometer is used on a worktable. , Calipers and the like.

[0003]

A deformed cross section having a portion having a thickness different in the width direction on one surface generally has different degrees of plastic deformation in the width direction due to rolling, so that bending, warping, twisting, etc. Deformation is likely to occur, and these are complicatedly entangled. For this reason, the width, thickness, etc. of each part changes depending on the position in the length direction. Therefore, it is necessary to measure the dimensions of each part at a large number of points along the length direction. You spend a lot of time on

In the measurement using a micrometer, a caliper, and the like, if there is a deformation such as bending, warping, or twisting, the measurement method has a peculiarity to the measurement method, and the individual difference between the measurement methods cannot be ignored.

[0005] An object of the present invention is to provide an apparatus for measuring the dimensions such as the width and thickness of each section of a profiled cross section having a section having a large thickness in the width direction (hereinafter referred to as a thick section) on one surface.
It is an object of the present invention to provide a dimension measuring device that can reduce the individual differences among the measurers and reduce the time spent for measurement even when there is deformation such as bending, warping, or twisting.

[0006]

According to the present invention, there is provided an apparatus for measuring the dimensions such as the width and thickness of each section of a profiled cross section having a portion having a large thickness in the width direction (hereinafter referred to as a thick section) on one surface. In order to realize a dimension measuring device that can reduce the individual difference between the measurers and reduce the time spent for measurement even if there is deformation such as bending, warping, torsion, etc. At least one pair of measuring tables that sandwich the thick portion from both sides and place the one side of the deformed section parallel to the reference plane, (2) the other side of the deformed section mounted on the measuring table and a predetermined surface (3) clamping means for correcting deformation in the thickness direction of the deformed cross-section by applying pressure and sandwiching the deformed cross-section between the measuring table and (3) And measuring means for measuring the dimensions of the predetermined part. It was the thing.

The reference plane is, for example, a horizontal plane, but need not be horizontal. The predetermined area will be described later.
The above-mentioned measuring means are, for example, (3a) full width measuring means for measuring the width of the deformed cross-section in contact with both side faces of the deformed cross-section, and (3b) protrusion for measuring the width in contact with the side of the thick section. A part width measuring means, (3c) a thickness measuring means for measuring the thickness of each part in the width direction in contact with the upper and lower surfaces, and the like. The dimension of the predetermined portion means one of the dimensions of each portion that needs to be measured.

It is preferable that the measuring table is configured so as to correct the widthwise deformation of the irregularly shaped cross-section by applying pressure by sandwiching the thick portion from each side between each pair. For example, the opposing surfaces of the pair of measuring tables are configured as parallel planes, and are urged inward (directions approaching each other).

[0009] The measuring table can be composed of at least a pair of members having a flat upper surface and opposing side surfaces. For example, the opposing side surfaces of the pair of members are formed as flat surfaces perpendicular to the upper surface. When the side surface of the thick portion is inclined or curved in the width direction, it may have a flat surface or a curved surface with respect to the upper surface accordingly.

[0010] Each pair of such members may be urged inward (in a direction approaching each other), and a pair of opposing side surfaces are brought into close contact with the side surfaces of the thick portion of the irregularly-shaped cross-section, and are sufficiently inwardly directed. By applying an appropriate pressure, it is possible to correct the bending in the width direction of the irregularly shaped cross section. It is desirable that the applied pressure has sufficient strength to correct the bending in the width direction of the deformed cross-section strip. When there are two or more thick portions in the width direction of the irregularly shaped strip, two or more pairs may be provided according to the number thereof.

By arranging the side surfaces of each pair of the measuring tables so as to be always located at the same distance from the reference straight line (so as to be symmetrical with respect to the reference straight line), the centering, that is, the thick portion of the irregularly shaped section strip is formed The sides can be forcibly located at equal distances from the reference straight line. This bias must be strong enough to displace both sides of the thick section of the profiled section symmetrically to the reference straight line. For the symmetrical biasing, a well-known mechanism, for example, a combination of a worm driven by an electric motor or the like and moving in the opposite direction at a constant pitch can be used.

[0012] The clamping means is constituted by a member which can be in close contact with at least a part of a flat portion on the upper surface of the irregularly-shaped cross section,
The deformed cross-section where the lower surface other than the thick portion is supported by the above-described measuring table is sandwiched between the upper surface of the measuring table and the lower surface of the clamp means, and by pressing, the thickness direction of the deformed cross-section is increased.
Deformation such as bending, warping, and twisting can be corrected. When the entire upper surface of the irregularly shaped cross section is flat, the clamping means may be in close contact with the entire surface in the width direction, but may be only partially in close contact if the deformation can be sufficiently corrected. If a part of the upper surface of the irregularly shaped strip is not flat, it may be in close contact with only the flat part or a part thereof. The predetermined area has such a meaning.

[0013] The clamping means is urged so that the irregularly shaped cross-section is brought into close contact with the upper surface of the measuring table and has a strength capable of correcting deformation in the thickness direction. In the desired shape of the irregular cross section,
When the upper surface and the lower surface are parallel, the lower surface of the clamping means is parallel to the upper surface of the measuring table. However, if the upper surface of the profiled cross section is inclined relative to the lower surface in the desired shape, a corresponding inclination may be provided.

Among the measuring means, the full width measuring means can be constituted by a pair of members which come into contact with both side surfaces of the deformed cross-section by urging the deformed cross-section in the width direction, and the width of the deformed cross-section is measured by the interval. Is done. The thickness portion width measuring means has the same configuration, so that it comes into contact with the side surface of the thick portion of the irregularly shaped cross section,
The width of the thick part is measured. In any case, non-contact width measuring means may be used.

The thickness measuring means is usually composed of a pair of members which are in contact with the upper and lower surfaces of the irregularly shaped cross section by urging in the thickness direction of the irregularly shaped section, and the thickness of the irregularly shaped section is measured based on the distance therebetween. Non-contact thickness measuring means may be used.

The thick portion is sandwiched from both sides by the measuring table,
Instead of applying pressure to correct the widthwise deformation of the profiled section, the widthwise bending can be corrected by at least one pair of members having flat surfaces facing each other, which is separate from the measuring table. The straightening members are urged inwardly (to approach each other) in the width direction of the profiled cross section with sufficient strength to correct the widthwise bending.

By arranging the inner surface of the straightening member such that the inner surface of the straightening member is always located at the same distance from the reference straight line, that is, symmetrical with respect to the reference straight line, the centering, that is, the thick portion of the irregularly shaped cross section is formed. The sides can be forcibly located at equal distances from the reference straight line. The bias of each pair of members must be strong enough to displace both sides of the profiled strip equidistant from the reference straight line.

[0018]

The dimension measuring device according to the present invention comprises at least one pair of measuring tables, clamping means, and dimension measuring means. In the dimension measuring device of the present invention having such a configuration, first,
At least one pair of measuring tables sandwiches the thick portion from both sides and places one surface of the deformed cross section parallel to the reference surface. The other surface (the surface opposite to the surface having the thick portion) on the measuring table and the clamp means contact with a predetermined area, and the irregular cross section between the measuring table and the clamp means. By applying pressure while sandwiching the strip, deformation in the thickness direction of the deformed cross-section strip is corrected. In the state where the deformation in the thickness direction is corrected in this way, the dimensions of a predetermined portion of the deformed cross-section, for example, the entire width of the deformed cross-section, the width of the thick portion, and the thickness at each portion in the width direction are measured by the measuring means. Therefore, individual differences due to the habit of the measurer and the like are removed, and the fluctuation of the measured value is significantly reduced.

Further, if the thick portion is sandwiched from both sides by the measuring table, and a pressure large enough to correct the deformation in the width direction of the deformed cross section is applied, the width direction of the deformed cross section can be improved. Can be corrected, and the dimension measurement accuracy is further improved.

[0020]

The present invention will be described in more detail with reference to the following examples. 1 to 4 show an example of an apparatus for measuring the dimension of a profiled strip according to the present invention. 1 is a principle view of the dimension measuring apparatus, FIG. 2 is an exploded perspective view of the dimension measuring apparatus, FIG. 3 is a side view of the apparatus, and FIG. 4 is a cross-section taken along a cutting line III-III in FIG. In FIGS.
a, the lower surface 1b of the thick portion 1B, and the thin portion 1C
, And 1a, 1b, and 1c are all flat surfaces. Each of the two pairs of measuring tables 2 has a horizontal upper surface 2a and vertical side surfaces 2b facing each other. As shown in FIGS. 2 to 4, the measuring table 2 is fixed to the shoe 2c. The shoe 2c is provided with a groove 2d on the lower surface, and the groove 2d slides on the guide rail 2e.
As shown by the arrow in FIG. 1, it can move in the width direction of the irregularly shaped cross-section strip 1. The shoe 2c is provided with a notch 2g at an outer corner, and is engaged with the pin 3a at the tip of the arm 3 urged inward (in a direction approaching each other).

The arm 3 is supported by a support frame 3b so as to be movable in the width direction of the deformed section 1 and symmetrically with respect to a reference straight line CC (FIG. 2) in the width direction of the section 1 by a mechanism (not shown). Moving. In order to move the arm 3 symmetrically,
For example, a combination of worms driven by an electric motor or the like and moving in the opposite direction at a constant pitch is used, but another mechanism may be used. Due to the movement of the arm 3, the shoe 2c is moved inward on the guide rail 2e via the pin 3a and the notch 2g. The shoe 2c is also biased outward by a spring (not shown), but is moved inward by the arm 3 against this bias.

Above the measuring table 2, an upper correction block 4 having a lower surface divided into two and having flat lower surfaces 4a and 4b is arranged. As shown by an arrow in FIG. 1, when the upper correction block 4 is pushed downward by its own weight and a power source (not shown), the lower surfaces 4 a and 4 b are placed on the upper surface 1 a of the deformed section 1 placed on the measuring table 2. Can be close.

At the position corresponding to the space between the two sets of measuring tables 2 and 2 in the longitudinal direction of the deformed cross-section strip 1, a contact 5 for measuring the full width, a contact 6 for measuring the width of the thick part, and One pair of the thickness measuring contacts 7 is arranged.

The pair of full-width measuring contacts 5 can move in the width direction of the irregularly shaped strip 1 with the base 5b of the column 5a sliding in the groove 8a on the upper surface of the gantry 8. It moves toward the side surface of the irregularly shaped section 1 and stops when it hits the side of the irregularly shaped section 1.
The movement amount is measured and recorded by a measuring device (not shown).

The pair of thick section width measuring contacts 6 can move in a fixed order in the width direction and the vertical direction of the irregularly shaped section 1 from the origin and the reference point, and the lower surface 1c of the irregularly shaped section 1 can be moved.
When it hits the side surface 1d of the thick portion 1B, the reaction force is detected by a detector (not shown) and stops at that position. The amount of movement from the reference point is sequentially measured and recorded by a measuring device (not shown).

Each of the thickness measuring contacts 7, 7 is connected to an arm 7a, one of which is inserted between two divided lower portions of the upper correction block 4 and the other is inserted into a gap between two sets of measuring tables 2. Have been. Although not shown in FIGS. 2 and 3, the arm 7a is connected to the column 7b as shown in FIG. 4, and is arranged in the vertical and horizontal directions (the width direction of the irregularly shaped section 1) as shown in FIG. Is moved according to. When the contact 7 comes into contact with the surface of the irregularly shaped section 1 due to the upward movement, a detector (not shown) detects a reaction force and stops at that position. The amount of movement from the reference point is measured and recorded by a measuring device (not shown). As shown in FIG. 4, the column 7b supports the arms 7a, 7a movably in the vertical direction, and the base 7c slides in the groove 8a on the upper surface of the gantry 8,
A predetermined distance can be moved in the width direction of the irregularly shaped section strip 1 by a mechanism such as a worm (not shown).

Hereinafter, a procedure of dimension measurement by this apparatus will be described. If the interval between the two pairs of arms 3 is sufficiently widened, the shoe 2c in which the pin 3a at the tip of the arm 3 is engaged with the notch 2g is urged outward, so that the guide rail 2
e moves outwardly, and the distance between the pair of measurement tables 2 increases. The interval between the inner side surfaces 2b of the measuring table 2 is defined as
Is slightly wider than the width of the thick portion 1B, the deformed cross-section strip 1 is placed on the measuring table 2 and the lower surface 1c of the former is placed on the upper surface 2a of the latter.
So that the thick portion 1 </ b> B is located between the measurement tables 2.

At this time, the full width measuring contact 5, the thick portion width measuring contact 6, and the thickness measuring contact 7 are respectively positioned at the origin. The origin of the full width measuring contact 5 is slightly higher than the upper surface of the measuring table 2 (smaller than the thickness of the irregularly shaped section 1), is symmetrical with the reference straight line CC, and has an interval wider than the width of the irregularly shaped section 1; The origin of the thick part width measuring contact 6 is lower than the upper surface of the support base 2 and is symmetric with respect to the reference straight line C-C, the interval is wider than the entire width of the irregularly shaped section 1, and the origin of the thickness measuring contact 7 is The upper contact 7 is slightly higher than the lower surfaces 4a and 4b of the upper correction block 4 on the vertical axis outside the side end of the deformed cross-section strip 1, and the lower contact 7 is lower than the upper surface 2a of the measuring table 2. I do.

When each pair of arms 3 is moved inward while the upper correction block 4 is lightly placed on the upper surface 1a of the irregularly shaped section strip 1, the shoe 2 is engaged through the engagement between the pin 3a and the notch 2g.
c is pushed inward and moves on the guide rail 2e.
Therefore, the measuring table 2 fixed on the shoe 2c also moves inward, and the side surface 2b of the measuring table 2 comes into contact with both side surfaces 1d (both ends of the lower surface 1b) of the thick portion 1B of the irregularly shaped strip 1.

Here, downward crimping of the upper correction block 4 is strengthened to correct the warpage and twist of the irregularly shaped section strip 1.
By continuing the pressing of the arm 3 against the side surfaces 1d of the thick portion 1B of the side surface 2b, the bending in the width direction of the irregularly shaped strip 1 is also corrected. Since the arm 3 moves symmetrically with respect to the reference straight line CC, both sides 1d of the thick portion 1B are forced to be at the same distance from the reference straight line CC simultaneously with the correction of the bending. That is, centering of the thick portion 1B is performed.

In this manner, centering and correction of bending, warping, and twisting are completed. Therefore, each of the pair of full-width measuring contacts 5 is moved from the origin (described above) to the side 1
e. Side 1 of tip 1 with irregular cross section
When hitting e, the width measuring contact 5 stops. At this time, the amount of movement from the reference position is measured and recorded by a measuring device (not shown).

Next, as shown in FIG. 5, the pair of thick section width measuring contacts 6 are respectively inwardly directed from the origin 41 in the width direction of the deformed section 1 (hereinafter, approaching the reference straight line CC). (The direction is referred to as inward and the direction away from it is referred to as outward)) to the reference position 42 having an interval smaller than the width of the irregularly shaped section 1 but wider than the width of the thick portion 1B. The contact 7 for thickness measurement is also moved inward from the origin 51 to the reference position 52 by the movement of the column 7b, as shown in FIG. The reference position 52 is on a vertical axis closer to the reference straight line CC than the side end of the deformed section strip 1, and the upper contact 7 is
The lower contact 4 is slightly higher than the lower surfaces 4a and 4b, and the lower contact 7 is slightly lower than the upper surface of the support base 2.

As shown in FIG. 5, each of the pair of thick section width measuring contacts 6 starts at the reference point 42, moves upward from the position 43 to the position 43, and moves from the position 43 toward the position 44. Movement from the position 44 downward to the position 45 and from the position 45 outward to the reference position 42 is performed in this order. Reference point 42
Moves upward from position 43 when it hits the lower surface 1c of the modified cross-section strip 1 and the side surface 1d of the thick portion 1B, and at position 4
The inward movement from 3 stops at position 44 and transitions to the next movement respectively. At this time, the reference position 4
Movement amount Y ₁ to 2, and from the reference position 42 to the stop position 44 in the horizontal direction movement amount Y _2, is measured by the measuring device (not shown), is recorded. When this measurement is completed, the thick part width measuring contact 6 returns to the reference position 42.

Further, as shown in FIG. 6, the pair of thickness measuring contacts 7 are moved from the reference position 52 toward the upper surface 1a and the lower surface 1c of the irregularly shaped strip 1 from above and below, respectively. The contact 7 for thickness measurement stops when it comes into contact with the upper surface 1 a and the lower surface 1 c of the irregularly shaped strip 1, moves up and down in the opposite direction from the stopped position 53, and returns to the reference position 52. Moving further inward from the reference position 52, the thick portion 1
B stops at a position 54 which is somewhat outside of the side surface 1d of B, moves toward the deformed section 1 again, stops at a position 55 on the surface, and moves away from the section 1 and returns to the position 54. Thereafter, the contact 7 for thickness measurement further moves inward and moves to a position 56 corresponding to the thick portion 1B,
The movement toward the profiled cross section 1 again, the movement to the surface, stopping at the position 57 and moving away to the position 56 is performed. The positions corresponding to the outside and inside of the thick portion 1B are determined based on the recorded information of the stop position 44 of the thick portion width measuring contact 6 described above. From the reference position 52 to each stop point 53,
The horizontal and vertical movement amounts to the position 57 via 54, 55, 56 are measured and recorded by a measuring device (not shown). After the thickness measurement is completed, the thickness measurement contact 7 returns to the reference position 52.

Based on the records of the respective movement amounts of the width measuring contact 5, the thick part width measuring contact 6, and the thickness measuring contact 7, the total width of the deformed section 1 and the width of the thick part 1B are obtained. , Thin part 1
C and the thickness of the thick portion 1B are calculated and determined by a calculation device (not shown).

By releasing the bias of the upper correction block 4, the measuring table 2, and the arm 3, the deformed section 1 is moved in the length direction, and the measurement of each dimension is repeated at another position. The measured values at multiple positions in the longitudinal direction are totaled and analyzed, and the deformed section strip 1
Judge the quality. After all the measurements are completed, the width measuring contact 5, the thick portion width measuring contact 6, and the thickness measuring contact 7 return to their respective origins.

[0037]

According to the apparatus of the present invention, when the dimensions of each section of the irregularly shaped section having portions having different thicknesses in the width direction are measured, even if the irregularly shaped section before measurement has a bend, a warp, a twist, or the like. It is possible to eliminate individual differences between the measurers and reduce the time spent for measurement.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a measurement principle of an embodiment of a dimension measuring device according to the present invention.

FIG. 2 is an exploded perspective view showing an embodiment of the dimension measuring device according to the present invention.

FIG. 3 is a side view showing an embodiment of the dimension measuring device according to the present invention.

FIG. 4 is a cross-sectional view showing one embodiment of the dimension measuring device according to the present invention (a cross-section taken along section line III-III in FIG. 3).

FIG. 5 is an explanatory view showing the movement of a thick part width measuring contact in one embodiment of the dimension measuring device according to the present invention.

FIG. 6 is an explanatory view showing the movement of a thickness measuring contact in one embodiment of the dimension measuring device according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 irregular shaped section 1B thick section 1C thin section 1a upper section of irregular section 1b lower section of thick section 1c lower section of small section 1d side of thick section 1e side of irregular section 2 measuring table 2a measuring table Upper surface 2b Side surface of measuring table 2c Shoe 2d groove 2e Guide rail 2f Column 2g Notch 3 Arm 3a Pin 3b Column 4 Upper correction block 4a, 4b Lower surface of upper correction block 5 Contact for full width measurement 5a Column 5b Column base 6 Meat Thick part width measurement contact 7 Thickness measurement contact 7a Arm 7b Column 7c Column base 8 Stand 8a Groove 41 Origin 42 Reference position 43,44,45 Position 51 Origin 52 Reference position 53,54,55,56,57 position

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Toru Takeuchi 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Within the Tsuchiura Plant of Hitachi Cable Co., Ltd. (72) Kazuya Ueno 3550 Kida Yomachi, Tsuchiura City, Ibaraki Hitachi (72) Inventor Katsuhisa Furuichi 3550, Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Hitachi Electric Wire Co., Ltd. (72) Inventor Ryuji Yaguchi 3550, Kida Yomachi, Tsuchiura City, Ibaraki Hitachi, Ltd. (58) Fields investigated (Int. Cl. ⁶ , DB name) G01B 21/00-21/32

Claims (2)

(57) [Claims] 1. An apparatus for measuring a dimension, such as a width and a thickness, of a predetermined portion of a profiled cross section having a portion having a thickness increased in a width direction on one surface, wherein the thick portion is sandwiched from both side surfaces. And at least one pair of measurement tables mounted in parallel to a reference plane except for the thick portion of the one surface of the deformed cross-section strip, and another surface of the deformed cross-section strip mounted on the measurement table and a predetermined position. A clamping means for correcting the deformation in the thickness direction of the deformed cross-section by applying pressure by sandwiching the deformed cross-section between the measuring table and the measuring table; A dimension measuring device for measuring a dimension of the predetermined portion. 2. The at least one pair of measurement tables is configured such that the thick portion is sandwiched from both sides between them and pressure is applied to correct the deformation in the width direction of the irregularly shaped cross section. The dimension measuring device according to claim 1, wherein: