KR20160023401A - Device for measuring squareness - Google Patents

Device for measuring squareness Download PDF

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Publication number
KR20160023401A
KR20160023401A KR1020140109757A KR20140109757A KR20160023401A KR 20160023401 A KR20160023401 A KR 20160023401A KR 1020140109757 A KR1020140109757 A KR 1020140109757A KR 20140109757 A KR20140109757 A KR 20140109757A KR 20160023401 A KR20160023401 A KR 20160023401A
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KR
South Korea
Prior art keywords
measurement
gauge
zero point
hole
squareness
Prior art date
Application number
KR1020140109757A
Other languages
Korean (ko)
Inventor
윤기철
Original Assignee
주식회사 세운하이테크
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 세운하이테크 filed Critical 주식회사 세운하이테크
Priority to KR1020140109757A priority Critical patent/KR20160023401A/en
Publication of KR20160023401A publication Critical patent/KR20160023401A/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Instruments as specified in the subgroups and characterised by the use of mechanical measuring means
    • G01B3/22Feeler-pin gauges, e.g. dial gauges
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means
    • G01B5/24Measuring arrangements characterised by the use of mechanical means for measuring angles or tapers; for testing the alignment of axes
    • G01B5/245Measuring arrangements characterised by the use of mechanical means for measuring angles or tapers; for testing the alignment of axes for testing perpendicularity
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00Measuring inclination, e.g. by clinometers, by levels
    • G01C9/02Details

Abstract

The present invention relates to a device to measure a squareness which conveniently and locally measures the squareness of a subject such as a ball guide post of a mold or a variety of workpieces within a short period. The present invention provides a device to measure the squareness comprising: a base unit, which is horizontal and which is settled on a measurement position where the subject for squareness measurement is placed; a zero point setting unit placed for whose front end unit to be close to one side surface of the subject for squareness measurement from the base unit to set the zero point, which is a standard for squareness measurement; a gauge post installed vertically upwards from the base unit having a plurality of horizontal inserting holes formed with a certain interval vertically; and a dial gauge combined with the horizontal inserting holes of the gauge post to be close to one side surface of the subject for squareness measurement on the same vertical line of the front end unit of the zero point setting unit, to measure a grade of the subject for squareness measurement in preparation for the zero point set by the zero point setting unit, and to calculate the squareness.

Description

Device for measuring squareness
The present invention relates to a perpendicularity measuring apparatus, and more particularly, to a perpendicularity measuring apparatus for measuring a rectangular angle of an object such as a ball guide post of a metal mold or various workpieces in a short time locally and locally.
BACKGROUND ART In a modern industrial society, mass production systems based on industrialization are becoming common, and there is a demand for importance on precision, performance and quality required for molds, various machines or workpieces. This requirement is difficult to ensure the functionality and compatibility of parts unless the designer, manufacturer, co-ordinator, and inspector in the field observe them organically and uniformly. Accordingly, the geometric dimension tolerance is applied in addition to the usual dimensional tolerance in the step of designing the parts of the metal mold or various mechanical devices or the workpiece.
In particular, the geometric dimensional tolerance is divided into shape tolerance and phase tolerance, and one of the shape tolerances is the right angle. Such a perpendicularity is defined as the extent to which the surface, axis or median plane of the regulating shape, relative to the datum, deviates from the complete orthogonal angle with respect to 90 degrees. If the precision of a die or a machine is greater than the prescribed tolerance, the deterioration of the function or the loss of compatibility leads to a loss of compatibility. Therefore, it is required to speed up the measurement enough to carry out the complete inspection of the manufactured parts.
An example of an object for measuring the perpendicularity is an upper / lower holder ball guide post of a mold. The ball guide post plays the most important role in positioning accuracy between the upper mold and the lower mold when assembling the mold. The guide rod that regulates the upper and lower holder movements of the upper and lower molds ensures the mold alignment and clearance of the mold .
Conventionally, in the case of a large mold, it is common to measure the perpendicularity of a ball guide post with a ball guide post assembled using a three-dimensional measuring machine. An example of such a three-dimensional perpendicularity measuring instrument is known in Patent Document 1 of the following prior art document. The first and second probe heads are installed on one end of the main body and are horizontally moved to inspect the two-dimensional perpendicularity of the object. Dimensional perpendicularity of the object is measured at one time by arranging the two perpendicularity measuring devices including the air supply part for supplying the air so as to horizontally move the object to 90 占 with respect to the central axis line of the object. However, it has been pointed out that such a conventional three-dimensional rectangular angle measuring instrument is not only inefficient in terms of cost and time, but also is difficult to measure since the probe head is horizontally moved by air supply to measure the perpendicular angle.
Korean Patent Publication No. 10-1995-0001275 (published on Jan. 13, 1995)
In the conventional three-dimensional rectangular measuring apparatus as disclosed in Patent Document 1, since the angle of the probe head is horizontally moved by the air supply to measure the perpendicular angle, it is not only inefficient in terms of cost and time, .
The present invention has been developed in order to overcome such conventional problems, and it is an object of the present invention to provide an apparatus and a method for measuring a perpendicularity of an object, An object of the present invention is to provide a perpendicularity measuring apparatus.
According to an aspect of the present invention, there is provided a measurement apparatus for measuring a measurement object, comprising: a horizontal base portion that is seated on a measurement position on which a measurement object is placed; and a tip portion on one side of the object to be measured from the base portion, A gauge post provided vertically upward on the base portion and having a plurality of horizontal insertion holes formed at regular intervals at upper and lower portions thereof, and a gauge post coupled to the horizontal insertion hole of the gauge post to define a zero point setting portion A rectangular angle including a dial gauge which can be converted to a rectangular angle by measuring the inclination of a rectangular measurement object in comparison with a zero point set by a zero setting unit while being closely attached to one side of the measurement object on the same vertical line as the tip of the measurement object A measuring device is provided.
In the present invention, the gauge post may be provided with a vertical gauge fixing hole formed vertically in the vertical direction and inserted into the vertical insertion hole to fix the dial gauge coupled to the horizontal insertion hole.
The dial gauge fixture is provided with a plurality of fixing holes aligned with the horizontal insertion holes of the gauge post at regular intervals in the up and down direction and the dial gauge fixture is coupled to the fixing hole of the dial gauge fixture in a state where the dial gauge fixture is inserted into the vertical insertion hole of the gauge post And a fixing pin for fixing the dial gauge fixing member may be provided.
The present invention configured as described above has the following effects.
First, the present invention has an effect that it is possible to measure the perpendicularity of a rectangular measurement object easily, quickly, and precisely by using a zero point setting unit and a dial gauge.
Secondly, the present invention has a low cost for constituting parts and can shorten the time required for carrying out the measurement of the perpendicular angle, and it is also possible for anyone to perform the measurement of the perpendicularity even if it is not an expert.
Third, the present invention is capable of direct measurement of squareness based on the numerical value measured by the dial gauge, conversion of angle is possible, and measurement accuracy is high because measurement error and deviation are small.
Fourthly, since the insertion position of the dial gauge can be variously changed with respect to the gauge post, it is possible to locally and easily measure only the portion required to measure the rectangular angle, and the efficiency of the operation is high.
Fifth, when the present invention is applied to the measurement of the right angle of the ball guide post of the mold, it is possible to precisely determine the correctness of the right angle, so that the effect of improving the quality of the mold and shortening the assembly time can be expected.
1 is a perspective view of an embodiment of a squareness measuring apparatus according to the present invention.
2 is an exploded perspective view of FIG.
FIG. 3 is a view illustrating an example of measuring the error of the perpendicularity and the tilt with respect to the measurement target using the present invention.
Fig. 4 is a plan view of Fig. 3. Fig.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that the following embodiments are provided so that those skilled in the art can understand the present invention without departing from the scope and spirit of the present invention. It is not.
FIG. 1 is an exploded perspective view of an apparatus for measuring a perpendicularity according to the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a cross- Fig. 4 is a plan view of Fig. 3. Fig.
1 to 4, the apparatus for measuring the perpendicularity illustrated in the embodiment of the present invention includes a base 10, a zero setting unit 20, a gage post 30, a dial gauge 40, And a dial gauge fixing device 50. [
The base 10 is made of a horizontal member and is placed on the measurement position B where the perpendicular measurement object M is disposed. Here, examples of the rectangular-angle measurement object M include a ball guide post, which is a guide bar for mutually regulating the upper and lower holder movements of the upper and lower molds constituting the mold, and various kinds of workpieces. The 'measurement position (B)' may be a holder of the above-mentioned metal mold, or may be a thick flat plate made of metal or stone for use in assembling or inspecting mechanical parts.
The zero point setting unit 20 is a member for setting the zero point serving as a reference for the measurement of the perpendicularity to the rectangular measurement object M and is a member for measuring the rectangular measurement object M from the base unit 10 as shown in FIGS. M is installed on the base portion 10 so that the tip portion is in close contact with one side surface of the base portion 10. 2, a pair of left and right first coupling holes 30a are formed on the lower end side of the gauge post 30, and a first coupling hole 30a is formed in the zero point setting portion 20, A second coupling hole 20a communicating with the hole 30a is formed and the first coupling bolt 21 is fastened to the second coupling hole 20a and the first coupling hole 30a, Is coupled to the lower end side of the gauge post 30. The distal end portion 20b of the zero point setting unit 20 is formed in a peak shape so that it can be linearly contacted to the surface of the rectangular measurement object M so that accurate zero point setting can be performed.
The gauge posts 30 are formed in a vertically long column shape and are installed vertically upward in the base portion 10. A concave coupling groove 10a is formed in the base portion 10 and a pair of third coupling holes 10b are formed in the coupling groove 10a in the vertical direction. The lower end of the gauge post 30 is inserted into the engaging groove 10a of the base portion 10 by forming the fourth engaging hole 30b at a position coinciding with the third engaging groove 10b The second joining bolt 31 is fastened to the fourth joining hole 30b and the third joining hole 10b so that the gauge post 30 is coupled to the base portion 10. On the other hand, a plurality of horizontal insertion holes 30c are formed in the gauge post 30 at regular intervals. The head portion 41 of the dial gauge 40, which will be described later, is selectively inserted into the horizontal insertion holes 30c. One vertical insertion hole 30d is formed in the vertical direction in the gauge post 30 of the present embodiment. The vertical insertion hole 30d extends from the upper side of the uppermost horizontal insertion hole 30c to the lower- And is formed deep to a position below the hole 30c.
The dial gauge 40 is coupled to the gauge post 30 to measure the tilt of the rectangular measurement object M, thereby converting the squareness. Particularly, the head portion 41 of the dial gauge 40 is brought into contact with the surface of the measurement object M at right angles to the distal end portion of the dial gauge 40. The head portion 41 is inserted into the horizontal insertion hole 30c At this time, the squareness of the rectangular measurement object (M) on the same vertical line as that of the distal end portion (20b) of the zero point setting unit (20) is in contact with one side face of the measurement object (M) and compared with the zero point set by the zero point setting unit And the inclination (that is, the perpendicularity) of the perpendicular measurement object M is measured.
The dial gauge fixture 50 has a long rod (or pin) shape in the vertical direction and is inserted into the vertical insertion hole 30d of the gauge post 30. The dial gauge 40 is firmly fixed to the gauge post 30 by pressing the head portion 41 of the dial gauge 40 coupled to the horizontal insertion hole 30c of the gauge post 30. [ The length of the dial gauge fixture 50 can be adjusted such that even if the dial gauge fixture 50 is inserted to the lowermost end of the vertical insertion hole 30d, the upper end of the gauge post 30 can be easily inserted into the vertical insertion hole 30d, And it is preferably formed long so as to protrude outward.
In this embodiment, the dial gauge fixture 50 is attached to the gauge post 30 in order to prevent the dial gauge fixture 50 from flowing in the state of being inserted into the vertical insertion hole 30d of the gauge post 30, A plurality of fixing holes 50a coinciding with the horizontal insertion holes 30c are vertically spaced apart from each other and the dial gauges 50 are inserted into the vertical insertion holes 30d of the gage post 30, And a fixing pin 51 coupled to the hole 50a for fixing the dial gauge fixing member 50. [
In the following, an example of use of the apparatus for measuring the angle of incidence according to the present invention will be described on the basis of the above-described embodiment.
The apparatus for measuring a perpendicularity angle of the present invention is such that the zero point setting unit 20 is coupled to the gauge post 30 and the gauge post 30 is coupled to the base unit 10.
In order to measure the perpendicularity to the rectangular measurement object M using the rectangular measurement apparatus of the present invention, first, as shown in FIG. 3, the rectangular measurement object M is placed on the measurement position B Place the right angle measuring device in the released position. At this time, one of the squareness measuring apparatuses may be used to face one side of the squareness measuring object M, or a pair of rectangularness measuring apparatuses may be used to face both sides of the squareness measuring object M, Axis direction and the Y-axis direction of the rectangular-angle measurement object M as shown in FIG. 4B, and the perpendicularity of the rectangular-angle measurement object M to the slope can be measured together.
Prior to measuring the perpendicularity of the rectangular measurement object M, the tip portion 20b protruding from the zero point setting portion 20 is aligned perpendicularly to the rectangular measurement object M at right angles Is also brought into close contact with the lower side of one side of the measurement object (M). The dial gauge fixture 50 is inserted into the horizontal insertion hole 30c at a proper position among the horizontal insertion holes 30c of the gauge post 30, Is inserted into the vertical insertion hole 30d of the gauge post 30 and is fixed firmly by inserting the fixing pin 51 into the fixing hole 50a of the dial gauge fixing member 50. [ The head portion 41 of the dial gauge 40 is brought into close contact with the upper side of one side of the rectangular measurement object M to measure the inclination of the zero point with respect to the tip portion 20b of the zero point setting portion 20, Is also converted into a squareness with respect to one side of the measurement object (M).
3, when the perpendicularity of the rectangular measurement object M is measured along the X-axis direction of the rectangular measurement object M, the right and left pair of rectangular measurement devices are measured at the right angle The distal end portion 20b of the zero point setting portion 20 is brought into close contact with the rectangular measurement object M in a state in which the rectangular measurement object M is placed on the right and left sides of the object M, The head portion 41 of the dial gauge 40 of the right angle measurement object M is brought into close contact with the right side surface of the measurement object M to set the zero point. Subsequently, the head portion 41 of the dial gauge 40 of the right angle measuring device positioned on the left side of the rectangularness measuring object M is brought into close contact with the left side face of the rectangular measuring object M, And calculates a squareness with respect to the left side of the rectangular measurement object M through the measured inclination.
A method of measuring the tilt and the perpendicularity of the rectangular measurement object M along the Y-axis direction of the rectangular measurement object M in FIG. 4 is also a method of measuring the rectangular measurement object M along the X- Is performed in the same manner as the method of measuring the perpendicularity of the magnetic field (M).
As described above, the perpendicularity measuring apparatus of the present invention can easily and easily set the zero point by the zero point setting unit 20 prior to the measurement of the perpendicularity of the rectangular object M, and then, Since the perpendicularity of the rectangular measurement object M is measured using the measurement unit 40, the measurement error and deviation can be reduced and the measurement can be performed precisely.
In addition, the parts constituting the apparatus for measuring a squareness of the present invention are inexpensive as compared with the case where the air supply unit and the like are provided as in the case of the above-described Patent Document 1, and the time required for performing the perpendicular angle measurement operation is shortened As well as being able to do it, anyone who is not an expert can perform a right angle measurement.
Since the head portion 41 of the dial gauge 40 can be inserted and fixed to the horizontal insertion hole 30c at a proper position among the horizontal insertion holes 30c of the gauge post 30, The insertion position of the gauge can be changed variously. Therefore, only the portion required to measure the rectangular angle of the rectangular measurement object M can be locally and easily measured, and the rectangular measurement operation can be performed efficiently.
According to the present invention, when applied to the squareness measurement of the ball guide post of the mold, it is possible to accurately determine the correctness of the rectangularity, thereby improving the quality of the mold and shortening the assembly time.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, This is possible.
10: base portion 10a: engaging groove
10b: third coupling hole 20: zero point setting section
20a: second engaging hole 20b:
21: first coupling bolt 30: gauge post
30a: first coupling hole 30b: fourth coupling hole
30c: Horizontal insertion hole 30d: Vertical insertion hole
31: second coupling bolt 40: dial gauge
41: head portion 50 dial gauge fastener
50a: Fixing hole 51: Fixing pin
B: Measurement position M: Right angle measurement object

Claims (3)

  1. A horizontal base portion that is seated on a measurement position where the perpendicularity measurement object is disposed;
    A zero point setting unit that is provided in the base unit to closely contact a tip of the rectangular measurement object on one side thereof to set a zero point as a reference for measuring the squareness;
    A gauge post installed vertically upward in the base portion and having a plurality of horizontal insertion holes formed at regular intervals in the vertical direction;
    The inclination of the rectangular measurement object is measured relative to the zero point set by the zero point setting unit while being attached to the horizontal insertion hole of the gauge post and being in close contact with a side surface of the rectangular measurement object on the same vertical line as the tip of the zero point setting unit And a dial gauge which is capable of converting the angle of view.
  2. The method according to claim 1,
    A vertical insertion hole is formed in the gage post in the vertical direction,
    And a dial gauge fixture inserted in the vertical insertion hole to fix the dial gauge coupled to the horizontal insertion hole.
  3. 3. The method of claim 2,
    Wherein the dial gauge fixture is provided with a plurality of fixing holes which are coincident with the horizontal insertion holes of the gauge posts at regular intervals,
    And a fixing pin coupled to the fixing hole of the dial gauge fixing member to fix the dial gauge fixing member while the dial gauge fixing member is inserted into the vertical insertion hole of the gauge post.
KR1020140109757A 2014-08-22 2014-08-22 Device for measuring squareness KR20160023401A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105973132A (en) * 2016-06-23 2016-09-28 湖北三江航天红阳机电有限公司 Measurement device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950001275A (en) 1993-06-08 1995-01-03 윤종용 3D squareness measuring device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950001275A (en) 1993-06-08 1995-01-03 윤종용 3D squareness measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105973132A (en) * 2016-06-23 2016-09-28 湖北三江航天红阳机电有限公司 Measurement device

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