CN112344866A - Automatic detection device for U-shaped copper pipe of air conditioner - Google Patents

Automatic detection device for U-shaped copper pipe of air conditioner Download PDF

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Publication number
CN112344866A
CN112344866A CN202011121609.6A CN202011121609A CN112344866A CN 112344866 A CN112344866 A CN 112344866A CN 202011121609 A CN202011121609 A CN 202011121609A CN 112344866 A CN112344866 A CN 112344866A
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straight arm
arm part
copper pipe
shaped copper
distance
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CN202011121609.6A
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CN112344866B (en
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周海兵
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Linyi Transportation Refrigeration Engineering Co ltd
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Individual
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/08Measuring arrangements characterised by the use of optical means for measuring diameters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/24Measuring arrangements characterised by the use of optical means for measuring contours or curvatures
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/26Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G01B11/272Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means

Abstract

The invention provides an automatic detection device for a U-shaped copper pipe of an air conditioner, which comprises an arc measuring part and a diameter measuring part, wherein the arc measuring part consists of a distance measuring sensor, an angle rotating device and a data analyzing part, the angle rotating device drives the distance measuring sensor to rotate, the data analyzing part analyzes a measuring result by combining a measured distance value and a measured rotating angle value, the diameter measuring part consists of a bracket, a light source, a light receiving part and a clamping jaw, light emitted by the light source irradiates the part of the clamping jaw, which is contacted with a straight arm part, and the light receiving part detects whether the part of the clamping jaw, which is contacted with the straight arm part, leaks. According to the invention, the laser ranging and rotating device is arranged to judge whether the circular arc radius of the circular arc part of the U-shaped copper pipe and the symmetry degree of the straight arm part of the U-shaped copper pipe are qualified or not, so that the measuring efficiency is high; through the measuring clamping jaws with standard sizes, whether the diameter of the straight arm part of the U-shaped copper pipe is qualified or not is measured, the detection result is visual and accurate, and the operation cost is low.

Description

Automatic detection device for U-shaped copper pipe of air conditioner
The application is a divisional application of a patent with the application date of 2020, 2, and 11, and the application number of 202010087169.0, and the name of the patent is 'device and method for automatically detecting a U-shaped copper pipe of an air conditioner'.
Technical Field
The invention belongs to the field of detection of air conditioner parts, and particularly relates to an automatic detection device and method for a U-shaped copper pipe of an air conditioner.
Background
An air conditioner, i.e. a room air conditioner (room air conditioner), is a unit for providing a room area (generally closed) with air temperature change to be treated, and is used for adjusting parameters such as temperature, humidity, cleanliness and air flow rate of air in the room (or closed room or area) to meet the requirements of human comfort or technological process.
In the manufacturing process of the air conditioner, the manufacturing of the U-shaped copper pipe is very critical, and the size information of the U-shaped copper pipe directly influences the overall performance of the air conditioner. The U-shaped copper pipe comprises two straight arm parts which are parallel to each other and a semicircular arc part, and is processed by the full-automatic U-shaped pipe bending machine in the manufacturing process, the working process comprises the steps of core rod advancing, copper pipe feeding, bending die clamping, copper pipe cutting, pipe bending, bending die loosening, core withdrawing, discharging and the like, the U-shaped copper pipe can deform in each step of processing, and the size of the U-shaped copper pipe is difficult to accurately guarantee.
In the prior art, after a U-shaped copper pipe is manufactured, the size of the U-shaped copper pipe is mainly detected by manually adopting a ruler and a protractor, and the problems of high operation intensity, low detection efficiency, low precision and the like exist, so that a device and a method for automatically detecting the size of the U-shaped copper pipe with high precision are urgently needed.
Disclosure of Invention
In order to solve the problems, the invention provides an automatic detection device for a U-shaped copper pipe of an air conditioner, wherein the U-shaped copper pipe consists of two straight arm parts which are parallel to each other and a semi-circular arc part, and the automatic detection device is characterized by comprising an arc measuring part and a diameter measuring part, the arc measuring part consists of a distance measuring sensor, an angle rotating device and a data analyzing part, the angle rotating device and the distance measuring sensor are arranged at the maximum cross section of the U-shaped copper pipe, the angle rotating device drives the distance measuring sensor to rotate, the data analyzing part analyzes a measuring result by combining a measured distance value and a measured rotating angle value, the diameter measuring part consists of a bracket, a light source, a light receiving part and a clamping jaw, the radius of the clamping jaw is the standard radius of the straight arm parts, the shape of the clamping jaw is matched with the upper end of the straight arm parts, the bracket drives the clamping jaw to move downwards to, the light receiving part detects whether light leaks from the portion of the claw contacting the straight arm part.
Preferably, the distance measuring sensor is selected from one of a laser distance measuring sensor, an infrared distance measuring sensor or an ultrasonic distance measuring sensor.
Preferably, the light receiving unit 7 is a CCD camera.
Preferably, if the CCD camera detects light leakage at an upper end portion of the claw contacting the straight arm portion, the diameter of the straight arm portion is excessively large; if the CCD camera detects light leakage at two sides of the contact between the clamping jaws and the straight arm part, the diameter of the straight arm part is smaller.
An automatic detection method for a U-shaped copper pipe of an air conditioner adopts an automatic detection device for the U-shaped copper pipe of the air conditioner, and comprises the following steps:
s1: detecting a semi-circular arc part of a U-shaped copper pipe of an air conditioner;
s11: the U-shaped copper pipe of the air conditioner is horizontally placed on the detection platform, and the arc measuring part is arranged at any position O in the semi-arc1The distance measuring sensor 1 of the circular arc measuring part is ensured to be positioned at the maximum cross section of the U-shaped copper pipe, and the data analysis part uses O1Establishing a rectangular coordinate system with the position as an origin;
s12: when the angle rotating device is in the horizontal position, the distance measuring sensor measures the distance of the point A on the semi-arc, and the coordinate (X) of the point A can be obtainedA,YA) The angle rotating device drives the distance measuring sensor to rotate downwards by an angle theta1The distance measuring sensor measures the distance of the point B on the semi-circular arc to obtain the coordinate (X) of the point BB,YB) The angle rotating device drives the distance measuring sensor to rotate downwards by an angle theta2The distance measuring sensor measures the distance of the C point on the semi-circular arc to obtain the point coordinate (X)C,YC);
S13: connecting the AB in the data analysis part, and taking a midpoint D of the line section AB as a perpendicular bisector to obtain a first linear equation; connecting BC, taking a midpoint E of the segment BC as a perpendicular bisector, and obtaining a two-line equation; connecting the AC, taking a midpoint F of the line segment AC as a perpendicular bisector, and obtaining a three-line equation; judging whether the three straight lines intersect at one point, if not, the semi-arc part has unqualified size and is not heldCarrying out subsequent measurement, wherein if the semi-arc part is intersected at a point, the semi-arc part is qualified in size, and the point is O2(Xo,Yo) Namely the center of a semicircular arc;
s2: detecting the symmetry degree of a straight arm part of a U-shaped copper pipe of the air conditioner;
s21: moving the arc measuring part to the semi-arc center O2The angle rotating device 2 drives the distance measuring sensor 1 to rotate clockwise by an angle theta along the horizontal negative direction3Measuring the center of a circle O2Distance L from point G of straight arm partOGThe angle rotating device 2 drives the distance measuring sensor 1 to rotate counterclockwise by an angle theta along the horizontal positive direction4Measuring the center of a circle O2Distance L from point H of straight arm partOHWherein theta3=θ4
S22: judgment of LOGAnd LOHIf not, the symmetry of the straight arm part is unqualified, the subsequent measurement step is not executed, and if equal, the symmetry of the straight arm part is qualified;
s23: through angle theta3、θ4、LOGAnd LOHObtaining the distance d between the G point and the H point of the straight arm part;
s3: diameter detection of straight arm part of U-shaped copper pipe of air conditioner
S31, moving the diameter measuring part to the position right above one straight arm part;
s32: the bracket drives the light source, the light receiving part and the clamping jaw to move downwards until the clamping jaw is attached to the straight arm part;
s33: turning on a light source, so that light emitted by the light source irradiates a part of the claw, which is in contact with the straight arm part, and a light receiving part detects whether the part of the claw, which is in contact with the straight arm part, leaks light or not;
s34: if the light leaks, the diameter of the straight arm part is unqualified, the subsequent measurement step is not executed, and if the light does not leak, the diameter of the straight arm part is qualified;
s35: horizontally moving the diameter measuring part for a distance d, moving the diameter measuring part to be right above the other straight arm part, and repeating the steps S32 and S33 to continue measuring;
s36: if light leaks, the diameter of the straight arm part is unqualified, and if no light leaks, the integral size of the U-shaped copper pipe of the air conditioner is judged to be qualified;
preferably, the light receiving part is a CCD camera, and if the CCD camera detects light leakage from the upper end portion of the claw contacting the straight arm part, the diameter of the straight arm part is larger; if the CCD camera detects light leakage at two sides of the contact between the clamping jaws and the straight arm part, the diameter of the straight arm part is smaller.
The invention has the following beneficial effects: 1. according to the invention, the laser ranging and rotating device is arranged to judge whether the circular arc radius of the circular arc part of the U-shaped copper pipe and the symmetry degree of the straight arm part of the U-shaped copper pipe are qualified or not, so that the measuring efficiency is high and the operation is convenient; 2. the invention measures whether the diameter of the straight arm part of the U-shaped copper pipe is qualified or not through the measuring clamping jaw with the standard size, and has intuitive and accurate detection result and low operation cost.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiment or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a front view structural diagram of an automatic detection device for U-shaped copper pipes of an air conditioner;
FIG. 2 is a simplified diagram of the detection of the half-arc of the overlooking structure of the automatic detection device for the U-shaped copper pipe of the air conditioner;
FIG. 3 is a simplified top view of a semicircular arc measuring point of the automatic detection device for the U-shaped copper pipe of the air conditioner;
FIG. 4 is a simplified top view of a semi-circular mid-perpendicular line of the automatic detection device for the U-shaped copper pipe of the air conditioner of the present invention;
FIG. 5 is a simplified diagram of the symmetry detection of the straight arm part in the top view of the automatic detection device for the U-shaped copper pipe of the air conditioner of the present invention;
FIG. 6 is a view of the diameter detection structure of the main straight arm part of the automatic detection device for the U-shaped copper pipe of the air conditioner of the present invention;
FIG. 7 is a side view straight arm part diameter detection structure diagram of the automatic detection device for the U-shaped copper pipe of the air conditioner of the present invention;
FIG. 8 is a flow chart of the method for automatically detecting the U-shaped copper tube of the air conditioner of the present invention
Detailed Description
The present invention is further described in detail below with reference to fig. 1 to 8, so that those skilled in the art can implement the present invention with reference to the description.
Referring to the attached drawings 1-7, the invention provides an automatic detection device for a U-shaped copper pipe of an air conditioner, the U-shaped copper pipe comprises two straight arm parts 6 and a semi-circular arc part 8 which are parallel to each other, the automatic detection device is characterized by comprising an arc measuring part and a diameter measuring part, the arc measuring part comprises a distance measuring sensor 1, an angle rotating device 2 and a data analyzing part, the angle rotating device 2 and the distance measuring sensor 1 are arranged at the maximum cross section of the U-shaped copper pipe, the angle rotating device 2 drives the distance measuring sensor 1 to rotate, the data analyzing part analyzes a measuring result by combining a measured distance value and a measured rotating angle value, the diameter measuring part comprises a bracket 9, a light source 4, a light receiving part 7 and a clamping jaw 5, the radius of the clamping jaw 5 is the standard radius of the straight arm part 6, the shape of the clamping jaw 5 is matched with the upper end of the straight arm part 6, the bracket 9, the light from the light source 4 irradiates the part of the claw 5 contacting the straight arm part 6, and the light receiving part 7 detects whether the part of the claw 5 contacting the straight arm part 6 leaks light.
Specifically, the distance measuring sensor is selected from one of a laser distance measuring sensor, an infrared distance measuring sensor or an ultrasonic distance measuring sensor.
Specifically, the light receiving unit 7 is a CCD camera.
Specifically, if the CCD camera detects light leakage at the upper end portion of the claw 5 in contact with the straight arm portion 6, the diameter of the straight arm portion 6 is large; if the CCD camera detects light leakage at two sides of the contact between the claws 5 and the straight arm part 6, the diameter of the straight arm part 6 is smaller.
Referring to fig. 8, an automatic detection method for a U-shaped copper pipe of an air conditioner adopts an automatic detection device for the U-shaped copper pipe of the air conditioner, and comprises the following steps:
s1: detecting a semi-circular arc part of a U-shaped copper pipe of an air conditioner;
s11: will the air conditioner UThe copper pipe is horizontally placed on the detection platform, and the circular arc measuring part is arranged at any position O in the semi-circular arc1The distance measuring sensor 1 of the circular arc measuring part is ensured to be positioned at the maximum cross section of the U-shaped copper pipe, and the data analysis part uses O1Establishing a rectangular coordinate system with the position as an origin;
s12: when the angle rotating device is in the horizontal position, the distance measuring sensor measures the distance of the point A on the semi-arc, and the coordinate (X) of the point A can be obtainedA,YA) The angle rotating device drives the distance measuring sensor to rotate downwards by an angle theta1The distance measuring sensor measures the distance of the point B on the semi-circular arc to obtain the coordinate (X) of the point BB,YB) The angle rotating device drives the distance measuring sensor to rotate downwards by an angle theta2The distance measuring sensor measures the distance of the C point on the semi-circular arc to obtain the point coordinate (X)C,YC);
S13: connecting the AB in the data analysis part, and taking a midpoint D of the line section AB as a perpendicular bisector to obtain a first linear equation; connecting BC, taking a midpoint E of the segment BC as a perpendicular bisector, and obtaining a two-line equation; connecting the AC, taking a midpoint F of the line segment AC as a perpendicular bisector, and obtaining a three-line equation; judging whether the three straight lines intersect at one point, if not, the semi-circular arc part is unqualified in size, not executing the subsequent measurement step, if so, the semi-circular arc part is qualified in size, and the point is O2(Xo,Yo) Namely the center of a semicircular arc;
s2: detecting the symmetry degree of a straight arm part of a U-shaped copper pipe of the air conditioner;
s21: moving the arc measuring part to the semi-arc center O2The angle rotating device 2 drives the distance measuring sensor 1 to rotate clockwise by an angle theta along the horizontal negative direction3Measuring the center of a circle O2Distance L from point G of straight arm partOGThe angle rotating device 2 drives the distance measuring sensor 1 to rotate counterclockwise by an angle theta along the horizontal positive direction4Measuring the center of a circle O2Distance L from point H of straight arm partOHWherein theta3=θ4
S22: judgment of LOGAnd LOHIf the values of (A) are equal to each other, ifIf the two values are not equal, the symmetry degree of the straight arm part is unqualified, the subsequent measurement step is not executed, and if the two values are equal, the symmetry degree of the straight arm part is qualified;
s23: through angle theta3、θ4、LOGAnd LOHObtaining the distance d between the G point and the H point of the straight arm part;
s3: diameter detection of straight arm part of U-shaped copper pipe of air conditioner
S31, moving the diameter measuring part to the position right above one straight arm part;
s32: the bracket 9 drives the light source 4, the light receiving part 7 and the clamping jaw 5 to move downwards until the clamping jaw 5 is attached to the straight arm part;
s33: turning on a light source 4, so that light emitted by the light source 4 irradiates a part of a claw 5 contacted with a straight arm part 6, and a light receiving part 7 detects whether light leaks from the part of the claw 5 contacted with the straight arm part 6;
s34: if the light leaks, the diameter of the straight arm part is unqualified, the subsequent measurement step is not executed, and if the light does not leak, the diameter of the straight arm part is qualified;
s35: horizontally moving the diameter measuring part for a distance d, moving the diameter measuring part to be right above the other straight arm part, and repeating the steps S32 and S33 to continue measuring;
s36: if light leaks, the diameter of the straight arm part is unqualified, and if no light leaks, the integral size of the U-shaped copper pipe of the air conditioner is judged to be qualified;
specifically, the light receiving unit 7 is specifically a CCD camera, and if the CCD camera detects light leakage at the upper end portion of the claw 5 in contact with the straight arm portion 6, the diameter of the straight arm portion 6 becomes larger; if the CCD camera detects light leakage at two sides of the contact between the claws 5 and the straight arm part 6, the diameter of the straight arm part 6 is smaller.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (4)

1. An automatic detection device for a U-shaped copper pipe of an air conditioner is characterized by comprising an arc measuring part and a diameter measuring part, wherein the arc measuring part consists of a distance measuring sensor (1), an angle rotating device (2) and a data analyzing part, the angle rotating device (2) and the distance measuring sensor (1) are arranged at the maximum cross section of the U-shaped copper pipe, the angle rotating device (2) drives the distance measuring sensor (1) to rotate, the data analyzing part analyzes a measuring result by combining the measured distance value and the measured rotating angle value, the diameter measuring part consists of a bracket (9), a light source (4), a light receiving part (7) and a clamping jaw (5), the radius of the clamping jaw (5) is the standard radius of the straight arm part (6), and the shape of the clamping jaw (5) is matched with the upper end of the straight arm part (6), the support (9) drives the clamping jaw (5) to move downwards to be in contact with the straight arm part (6), light emitted by the light source (4) irradiates the part, in contact with the straight arm part (6), of the clamping jaw (5), and the light receiving part (7) detects whether the part, in contact with the straight arm part (6), of the clamping jaw (5) is leaked or not; the air conditioner U-shaped copper pipe automatic detection device specifically comprises the following steps during operation:
s1: detecting a semi-circular arc part of a U-shaped copper pipe of an air conditioner;
s11: the U-shaped copper pipe of the air conditioner is horizontally placed on the detection platform, and the arc measuring part is arranged at any position O in the semi-arc1The distance measuring sensor (1) of the circular arc measuring part is ensured to be positioned at the maximum cross section of the U-shaped copper pipe, and the data analysis part uses O1Establishing a rectangular coordinate system with the position as an origin;
s12: when the angle rotating device (2) is in a horizontal position, the distance measuring sensor (1) measures the distance of the point A on the semicircular arc, and the coordinate (X) of the point A can be obtainedA,YA) The angle rotating device (2) drives the ranging sensor (1) to rotate downwards by an angle theta1The distance measuring sensor (1) measures the distance of the point B on the semicircle to obtain the coordinate (X) of the point BB,YB) The angle rotating device (2) drives the ranging sensor (1) to rotate downwards by an angle theta2The distance measuring sensor (1) measures the distance of the C point on the semi-circular arc to obtain a point coordinate (X)C,YC);
S13: connecting the AB in the data analysis part, and taking a midpoint D of the line section AB as a perpendicular bisector to obtain a first linear equation; connecting BC, taking a midpoint E of the segment BC as a perpendicular bisector, and obtaining a two-line equation; connecting the AC, taking a midpoint F of the line segment AC as a perpendicular bisector, and obtaining a three-line equation; judging whether the three straight lines intersect at one point, if not, the semi-circular arc part is unqualified in size, not executing the subsequent measurement step, if so, the semi-circular arc part is qualified in size, and the point is O2(Xo,Yo) Namely the center of a semicircular arc;
s2: detecting the symmetry degree of a straight arm part of a U-shaped copper pipe of the air conditioner;
s21: moving the arc measuring part to the semi-arc center O2The angle rotating device (2) drives the distance measuring sensor (1) to rotate clockwise by an angle theta along the horizontal negative direction3Measuring the center of a circle O2Distance L from point G of straight arm partOGThe angle rotating device (2) drives the distance measuring sensor (1) to rotate anticlockwise by an angle theta along the horizontal positive direction4Measuring the center of a circle O2Distance L from point H of straight arm partOHWherein theta3=θ4
S22: judgment of LOGAnd LOHIf not, the symmetry of the straight arm part is unqualified, the subsequent measurement step is not executed, and if equal, the symmetry of the straight arm part is qualified;
s23: through angle theta3、θ4、LOGAnd LOHObtaining the distance d between the G point and the H point of the straight arm part;
s3: diameter detection of straight arm part of U-shaped copper pipe of air conditioner
S31, moving the diameter measuring part to the position right above one straight arm part;
s32: the bracket (9) drives the light source (4), the light receiving part (7) and the clamping jaw (5) to move downwards until the clamping jaw (5) is attached to the straight arm part;
s33: the light source (4) is started, light rays emitted by the light source (4) irradiate the part, in contact with the straight arm part, of the clamping jaw (5), and the light receiving part (7) detects whether light leaks from the part, in contact with the straight arm part, of the clamping jaw (5);
s34: if the light leaks, the diameter of the straight arm part is unqualified, the subsequent measurement step is not executed, and if the light does not leak, the diameter of the straight arm part is qualified;
s35: horizontally moving the diameter measuring part for a distance d, moving the diameter measuring part to be right above the other straight arm part, and repeating the steps S32 and S33 to continue measuring;
s36: if light leaks, the diameter of the straight arm part is unqualified, and if no light leaks, the integral size of the U-shaped copper pipe of the air conditioner is judged to be qualified.
2. The automatic detection device for the U-shaped copper pipe of the air conditioner as claimed in claim 1, wherein the distance measuring sensor (1) is selected from one of a laser distance measuring sensor, an infrared distance measuring sensor or an ultrasonic distance measuring sensor.
3. The automatic detection device for the U-shaped copper pipe of the air conditioner as claimed in claim 1, wherein the light receiving part (7) is a CCD camera.
4. The automatic detection device for the U-shaped copper pipe of the air conditioner as claimed in any one of claims 1 to 3, wherein if the CCD camera detects light leakage at the upper end part of the claw (5) contacted with the straight arm part (6), the diameter of the straight arm part (6) is larger; if the CCD camera detects light leakage at two sides of the contact between the clamping jaws (5) and the straight arm part (6), the diameter of the straight arm part (6) is smaller.
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