CN113203345B - Detection tool and detection method - Google Patents
Detection tool and detection method Download PDFInfo
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- CN113203345B CN113203345B CN202110463277.8A CN202110463277A CN113203345B CN 113203345 B CN113203345 B CN 113203345B CN 202110463277 A CN202110463277 A CN 202110463277A CN 113203345 B CN113203345 B CN 113203345B
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- detection
- longitudinal beam
- lifting lug
- measuring
- rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a detection tool and a detection method, which are used for detecting the coaxiality and the center distance of lifting lug pin holes of a frame, wherein the frame is provided with a first longitudinal beam and a second longitudinal beam which extend along a first direction and are arranged at intervals, the first longitudinal beam and the second longitudinal beam are respectively provided with a plurality of lifting lug pin holes at intervals along a second direction, the detection tool comprises a detection platform which is used for supporting the frame, in the technical scheme provided by the invention, an axial detection piece and a measurement component are arranged, the axial detection piece is used for being assembled with the lifting lug pin holes which are arranged on the first longitudinal beam and the second longitudinal beam in the second direction in an opposite way, the measurement component comprises a plurality of identification parts and measurement parts, each identification part is respectively matched with the plurality of lifting lug pin holes and is used for identifying the position of each lifting lug pin hole, the measurement part is used for measuring the distance between the first longitudinal beam or the second longitudinal beam and two adjacent identification parts in the first direction, the problem of current detection frock can not direct measurement a plurality of lug pinhole axiality, front and back lug pinhole centre-to-centre spacing is solved.
Description
Technical Field
The invention relates to the field of automobile production equipment, in particular to a detection tool and a detection method.
Background
The frame is a basic part of the light truck chassis, lifting lugs for mounting a plate spring in a suspension structure are arranged on the frame, pin holes are formed in the lifting lugs, and the frame is connected with the plate spring through 8 lifting lugs on the front, the rear, the left and the right, so that the frame is connected with the chassis part into a whole through the suspension, the front axle and the rear axle. In the production process of the frame, the coaxiality of the left and right lifting lug pin holes, the center distance of the front and rear lifting lug pin holes and the center distance of the left and right lifting lug pin holes are three very important sizes, and the three sizes directly influence the assembly of the left and right plate springs and the front and rear axles and influence the performance of the whole vehicle.
The center distance of pin holes of the left lifting lug and the right lifting lug can be directly measured by a measuring tape, because the left lifting lug and the right lifting lug are symmetrically arranged, and the coordinates of the pin hole centers in the X direction and the Z direction are the same. The coaxiality of the pin holes of the left lifting lug and the right lifting lug and the center distance of the pin holes of the front lifting lug and the rear lifting lug are not directly and quickly measured by the checking fixture.
Disclosure of Invention
The invention mainly aims to provide a detection tool and a detection method, and aims to provide a detection tool capable of simultaneously measuring the coaxiality of left and right lifting lug pin holes and the center distance of front and rear lifting lug pin holes.
In order to achieve the above object, the present invention provides a detection tool for detecting coaxiality and a center distance of a shackle pin hole of a vehicle frame, where the vehicle frame has a first longitudinal beam and a second longitudinal beam extending along a first direction, the first longitudinal beam and the second longitudinal beam are arranged at an interval in a second direction, and the first longitudinal beam and the second longitudinal beam are respectively provided with a plurality of shackle pin holes at intervals along the second direction, where the detection tool includes:
the detection table is used for supporting the frame;
the axial detection piece is used for being assembled with the lifting lug pin holes oppositely arranged in the second direction on the first longitudinal beam and the second longitudinal beam so as to detect the coaxiality of the lifting lug pin holes; and the number of the first and second groups,
the measuring assembly comprises a plurality of identification parts and measuring pieces, the identification parts are respectively matched with the lifting lug pin holes in a one-to-one correspondence mode and used for identifying the positions of the lifting lug pin holes, and the measuring pieces are used for measuring the distance between two adjacent identification pieces in the first direction on the first longitudinal beam or the second longitudinal beam so as to detect the center distance between two adjacent pin holes.
Optionally, the axial detection piece comprises a positioning rod and a detection rod, the positioning rod is used for being inserted into each suspension lug pin hole of each first longitudinal beam so as to have a first end far away from the second longitudinal beam and a second end close to the second longitudinal beam;
the detection rod is used for being inserted into each lifting lug pin hole of each second longitudinal beam so as to be provided with a first end far away from the first longitudinal beam and a second end close to the first longitudinal beam;
the detection rod is provided with a movable stroke close to the positioning rod, a detection structure is arranged between the second end of the detection rod and the second end of the positioning rod, and the detection structure is used for measuring the coaxiality of the detection rod and the positioning rod.
Optionally, the detection structure includes a protruding alignment protrusion formed on the second end surface of one of the positioning rod and the detection rod, and an alignment groove formed on the second end surface of the other one of the positioning rod and the detection rod, the alignment protrusion is adapted to the alignment groove, so that when the alignment protrusion is inserted into the alignment groove, the detection rod is coaxial with the positioning rod.
Optionally, a first end of the positioning rod is provided with a first step surface arranged around the periphery of the positioning rod, and the first step surface is used for abutting against each lifting lug on one side of the first longitudinal beam, which is far away from the second longitudinal beam;
the first end of the detection rod is provided with a second step surface which is annularly arranged on the periphery of the detection rod, and the second step surface is used for being abutted against the lifting lugs on one side, far away from the first longitudinal beam, of the second longitudinal beam.
Optionally, each of the identification portions extends in the vertical direction, and one side of each of the identification portions, which is far away from the frame, is flush with the end surface of each of the axial direction detection pieces in the first direction, so that two adjacent identification portions are arranged in the first direction;
the two adjacent identification parts comprise a first identification part and a second identification part, a first contact surface is arranged on one side of the first identification part in the second direction, a second contact surface is arranged on one side of the second identification part in the second direction, and the first contact surface and the second contact surface are respectively positioned on the same side of the first identification part and the second identification part in the second direction;
the measuring piece extends along the first direction to be provided with a starting end attached to the first attached surface and a measuring end attached to the second attached surface, and the distance between two adjacent identification parts in the first direction is measured according to the measuring data of the measuring end and the measuring data of the starting end.
Optionally, the detection tool further includes a plurality of support columns, lower ends of the plurality of support columns are supported by the detection table, upper ends of the plurality of support columns are used for supporting the vehicle frame, and each support column can be movably arranged on the detection table in the up-down direction, so that the upper surface of the vehicle frame is horizontal.
Optionally, the detection tool further comprises an adjusting seat, the adjusting seat is arranged on the detection table, and an inner threaded hole extending up and down is formed in the upper edge of the adjusting seat in the axial direction;
and each supporting column is provided with an external thread so as to be in threaded connection with the adjusting seat.
Optionally, a pin hole is radially formed in the upper end of each support pillar, an adjusting pin penetrates through each pin hole, and two ends of each adjusting pin respectively extend out of two corresponding sides of each support pillar.
Optionally, the top of each support column is arranged in a conical shape, and the top of each support column is used for penetrating through the longitudinal beam holes on the first longitudinal beam and the second longitudinal beam.
The invention also provides a detection method for detecting the coaxiality and the center distance of the lifting lug pin hole of the frame, and the detection method is used for detecting by using the detection tool and comprises the following steps:
placing the frame on top of a plurality of the support pillars, the top of the plurality of support pillars being disposed through stringer holes on the first and second stringers;
rotating two ends of each adjusting pin along the circumferential direction of the supporting columns, and enabling each supporting column to move up and down along an axial direction so that the upper surface of the frame is horizontal;
inserting the positioning rod from one side of the first longitudinal beam far away from the second longitudinal beam along the second direction from the lifting lug pin hole until the first step surface abuts against the lifting lug on the first longitudinal beam;
inserting the detection rod from one side of the second longitudinal beam far away from the first longitudinal beam along the second direction from the lifting lug pin hole until the second step surface is abutted with the lifting lug on the second longitudinal beam;
when the alignment bulge is inserted in the alignment groove, the detection rod is coaxial with the positioning rod;
placing the first identification part on the detection table, and adjusting one side, far away from the frame, of the first identification part until the first identification part is flush with the end face, in the first direction, of one of the two adjacent axial detection pieces;
placing the second identification part on the detection table, and adjusting one side, far away from the frame, of the second identification part until the second identification part is flush with the end face of the other axial detection piece in the first direction;
attaching the starting end of the measuring part to the first attaching surface of the first identification part to obtain the starting data of the starting end;
the measuring end of the measuring piece is attached to the second attaching surface of the second identification part, and measuring data of the measuring end is obtained;
and acquiring a difference value between the measurement data and the initial data, and measuring the center distance between two adjacent pin holes.
In the technical scheme provided by the invention, a vehicle frame is provided with a first longitudinal beam and a second longitudinal beam which extend along a first direction and are arranged at intervals, the first longitudinal beam and the second longitudinal beam are respectively provided with a plurality of lifting lug pin holes at intervals along a second direction, a detection tool comprises a detection table, the detection table is used for supporting the vehicle frame, an axial detection piece and a measurement component are arranged, the axial detection piece is used for being assembled with the lifting lug pin holes which are oppositely arranged on the first direction and the second longitudinal beam, the measurement component comprises a plurality of identification parts and measurement pieces, each identification part is respectively matched with the lifting lug pin holes to identify the position of each lifting lug pin hole, the measurement piece is used for measuring the distance between the first longitudinal beam or the second longitudinal beam and two adjacent identification pieces in the first direction, the problem of current detection frock can not direct measurement about the axiality of lug pinhole, front and back lug pinhole centre-to-centre spacing is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment of a detection tool provided in the present invention;
FIG. 2 is a partial perspective view of the inspection tool of FIG. 1;
FIG. 3 is an enlarged schematic view taken at A in FIG. 2;
FIG. 4 is a schematic cross-sectional view of the inspection tool of FIG. 1;
FIG. 5 is an enlarged view of the point C in FIG. 4;
FIG. 6 is a schematic plan view of the positioning rod of FIG. 1;
FIG. 7 is a schematic plan view of the detection bar of FIG. 1;
FIG. 8 is an enlarged view of FIG. 4 at D;
FIG. 9 is a schematic plan view of the measurement assembly of FIG. 1 in a measurement state;
FIG. 10 is a schematic plan view of the measurement assembly of FIG. 1 in a measurement state;
FIG. 11 is a schematic view of the support post, adjustment block and adjustment pin of FIG. 1 shown assembled;
fig. 12 is an enlarged schematic view of B in fig. 2.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
31 | |
| 1000 | First longitudinal beam | 32 | |
| 2000 | Second |
4 | First identification part |
| a | A |
41 | The first contact surface |
| b | Second direction | 5 | |
| 1 | Detection table | 51 | |
| 2 | Positioning rod | 6 | |
| 21 | Alignment bulge | 7 | Adjusting |
| 22 | |
8 | Adjusting |
| 3 | Detection rod |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The frame is a basic part of the light truck chassis, lifting lugs for mounting a plate spring in a suspension structure are arranged on the frame, pin holes are formed in the lifting lugs, and the frame is connected with the plate spring through 8 lifting lugs on the front, the rear, the left and the right, so that the frame is connected with the chassis part into a whole through the suspension, the front axle and the rear axle. In the production process of the frame, the coaxiality of the left and right lifting lug pin holes, the center distance of the front and rear lifting lug pin holes and the center distance of the left and right lifting lug pin holes are three very important sizes, and the three sizes directly influence the assembly of the left and right plate springs and the front and rear axles and influence the performance of the whole vehicle. The center distance of pin holes of the left lifting lug and the right lifting lug can be directly measured by a measuring tape, because the left lifting lug and the right lifting lug are symmetrically arranged, and the coordinates of the pin hole centers in the X direction and the Z direction are the same. The coaxiality of the pin holes of the left lifting lug and the right lifting lug and the center distance of the pin holes of the front lifting lug and the rear lifting lug are not directly and quickly measured by the checking fixture. Each frame in the prior art needs to be provided with a special inspection tool and a special inspection platform, so that the efficiency is low, the flexibility is poor, and the cost is higher even if the frame is compatible with various wheelbase detection.
In order to solve the above problems, the present invention provides a detection tool 100, configured to detect coaxiality and a center distance of shackle pin holes of a vehicle frame, where the vehicle frame has a first longitudinal beam 1000 and a second longitudinal beam 2000 extending along a first direction a, the first longitudinal beam 1000 and the second longitudinal beam 2000 are disposed at an interval in a second direction b, and the first longitudinal beam 1000 and the second longitudinal beam 2000 are respectively provided with a plurality of shackle pin holes at intervals in the second direction b, and fig. 1 to 12 are specific embodiments of the detection tool 100 provided in the present invention.
Referring to fig. 1 to 2, the inspection tool 100 includes an inspection table 1, an axial inspection piece, and a measurement assembly, where the inspection table 1 is configured to support the vehicle frame, the axial inspection piece is configured to be fittable to the lifting lug pin holes, which are oppositely arranged in the second direction b, on the first longitudinal beam 1000 and the second longitudinal beam 2000, so as to inspect coaxiality of the lifting lug pin holes, the measurement assembly includes a plurality of identification portions and a measurement piece, the identification portions are respectively matched with the lifting lug pin holes in a one-to-one correspondence manner, so as to identify positions of the lifting lug pin holes, and the measurement piece is configured to measure a distance between two adjacent identification pieces in the first direction a on the first longitudinal beam 1000 or the second longitudinal beam 2000, so as to inspect a center distance between two adjacent pin holes.
In the technical solution provided by the present invention, a vehicle frame has a first longitudinal beam 1000 and a second longitudinal beam 2000 extending along a first direction a and arranged at intervals, the first longitudinal beam 1000 and the second longitudinal beam 2000 are respectively provided with a plurality of lifting lug pin holes at intervals along a second direction b, a detection tool 100 includes a detection platform 1, the detection platform 1 is used for supporting the vehicle frame, by arranging an axial detection member and a measurement assembly, the axial detection member is used for being assembled with the lifting lug pin holes arranged oppositely in the second direction b on the first longitudinal beam 1000 and the second longitudinal beam 2000, the measurement assembly includes a plurality of identification portions and a measurement member, each identification portion is respectively matched with the plurality of lifting lug pin holes for identifying the position of each lifting lug pin hole, the measurement member is used for measuring the position of the first longitudinal beam 1000 or the second longitudinal beam 2000, the distance between two adjacent identification pieces in the first direction a solves the problem that the existing detection tool 100 cannot directly measure the coaxiality of left and right lifting lug pin holes and the center distance between front and rear lifting lug pin holes, the manufacturing cost of the detection tool 100 is low, the flexibility degree is high, and the on-line detection of the coaxiality of the lifting lug pin holes of frames with different wheelbases and different widths can be realized.
Specifically, the axial detection member needs to be inserted into the first longitudinal beam 1000 and the second longitudinal beam 2000, the axial detection member directly penetrates through the lifting lug pin hole of the first longitudinal beam 1000, and then it is determined whether the axial detection member can be smoothly inserted into the lifting lug pin hole of the second longitudinal beam 2000, but since the span between the first longitudinal beam 1000 and the second longitudinal beam 2000 is large, the axial detection member needs to be processed with high precision and high molding requirement, and it is difficult to technically achieve the required detection precision, which is not favorable for the detection precision, and may cause a large error, please refer to fig. 2 And a second end proximate to the second stringer 2000; the detecting rod 3 is configured to be inserted into each ear pin hole of each second longitudinal beam 2000, so as to have a first end far away from the first longitudinal beam 1000 and a second end close to the first longitudinal beam 1000; detect stick 3 and have and be close to the activity stroke of location stick 2, detect stick 3 the second end with be equipped with between the second end of location stick 2 and detect the structure, it is used for measuring to detect the structure detect stick 3 with the axiality of location stick 2, through setting up location stick 2 with detect stick 3, will on the second direction b the length of axial detection piece has been divided into two parts, because of location stick 2 with the length that detects stick 3 is shorter, so under the prerequisite that keeps the precision, the processing degree of difficulty reduces by a wide margin, makes like this through setting location stick 2 with the precision that detects stick 3 can guarantee to detect. It should be noted that, in this embodiment, the diameters of the positioning rod 2 and the detection rod 3 are the same, so as to facilitate subsequent detection.
Specifically, in order to more intuitively judge the coaxiality of the positioning rod 2 and the detecting rod 3, referring to fig. 3 to 7, in this embodiment, the detecting structure includes an alignment protrusion protruding from the second end face of one of the positioning rod 2 and the detecting rod 321 and an alignment groove 31 provided on a second end surface of the other of the positioning rod 2 and the detecting rod 3, wherein the alignment protrusion 21 is adapted to the alignment groove 31, so that when the alignment protrusion 21 is inserted into the alignment groove 31, the detecting rod 3 is coaxial with the positioning rod 2, when in use, the positioning rod 2 is inserted from a side of the first longitudinal beam 1000 away from the second longitudinal beam 2000 along the second direction b from the lifting lug pin hole, the detecting rod 3 is inserted from a side of the second longitudinal beam 2000 away from the first longitudinal beam 1000 along the second direction b from the lifting lug pin hole, and when the alignment protrusion 21 is inserted into the alignment groove 31, the detecting rod 3 is proved to be coaxial with the positioning rod 2; when the alignment protrusion 21 cannot be accurately inserted into the alignment groove 31, it is proved that the detection rod 3 and the positioning rod 2 are not coaxial. In this embodiment, the machining dimensions of the positioning rod 2 and the detection rod 3 can be referred to as follows: the positioning rod 2 is processed by 45 steel and then is subjected to quenching and tempering, and the right side is processed
A concave hole with the depth of 15mm and a left cylinder
The diameter of the middle cylinder can be designed according to the pin holes of the lifting lugs; the detection rod 3 is processed by 45 steel and then is subjected to thermal refining treatment, and the left side is processed
10mm long cylinder boss, right cylinder
The diameter of the middle cylinder can be designed according to the pin hole of the lifting lug.
Further, in order to enable the positioning rod 2 and the detecting rod 3 to be relatively fixed in the second direction b and facilitate subsequent measurement, please refer to fig. 6 to 8, in this embodiment, a first end of the positioning rod 2 has a first step surface 22 annularly disposed on an outer periphery of the positioning rod 2, and the first step surface 22 is configured to abut against each lifting lug on a side of the first longitudinal beam 1000 away from the second longitudinal beam 2000; the first end of the detecting rod 3 is provided with a second step surface 32 which is annularly arranged on the periphery of the detecting rod 3, the second step surface 32 is used for being abutted with each lifting lug on one side of the second longitudinal beam 2000 which is far away from the first longitudinal beam 1000, so that when the positioning rod 2 and the detecting rod 3 are movably detected along the second direction b respectively, the positioning rod can be positioned according to the first step surface 22 and the second step surface 32, so that the lengths of the ends, protruding out of the frame, of the positioning rod 2 and the detecting rod 3 are fixed, for the convenience of subsequent detection, after the positioning rod 2 and the detecting rod 3 are fixedly limited, the lengths of the assembled positioning rod 2 and the assembled detecting rod 3 can be set to be fixed values, and thus when a plurality of axial detecting pieces are detected, the total lengths of the axial detecting pieces can be ensured to be consistent, and the end surfaces of the axial detection pieces on the same side of the frame can be ensured in the first direction a.
Specifically, since the heights of the lifting lugs on the first side member 1000 and the second side member 2000 are different, the heights of the lifting lug pin holes in the vertical direction are also different, and the distance in the first direction a cannot be directly obtained by measuring the linear distance of the lifting lug pin holes. Referring to fig. 9 to 10, in this embodiment, each of the identification portions extends in the vertical direction, and one side of each of the identification portions, which is far away from the frame, is flush with the end surface of each of the axial direction detection members in the first direction a, and because the lengths of the axial direction detection members are consistent, a connection line between the first identification portion 4 and the second identification portion 5 is along the first direction a, so that two adjacent identification portions are arranged along the first direction a; the two adjacent marks comprise a first mark 4 and a second mark 5, the first mark 4 has a first abutting surface 41 on one side in the second direction b, the second mark 5 has a second abutting surface 51 on one side in the second direction b, and the first abutting surface 41 and the second abutting surface 51 are respectively located on the same side of the first mark 4 and the second mark 5 in the second direction b; the measuring piece extends along the first direction a to be provided with a starting end abutting against the first abutting surface 41 and a measuring end abutting against the second abutting surface 51, so as to measure the distance L between two adjacent identification parts in the first direction a according to the measuring data of the measuring end and the measuring data of the starting end. When in detection, the first identification part 4 is placed on the detection table 1, and one side, away from the frame, of the first identification part 4 is adjusted until the side is flush with the end face, in the first direction a, of one of the two adjacent axial detection pieces; placing the second identification part 5 on the detection table 1, and adjusting one side, away from the frame, of the second identification part 5 until the side is flush with the end surface of the other axial detection piece in the first direction a; attaching the starting end of the measuring part to the first attaching surface 41 of the first identification part 4 to obtain the starting data of the starting end; abutting the measuring end of the measuring piece with the second abutting surface 51 of the second identification part 5 to acquire the measuring data of the measuring end; and acquiring a difference value L between the measurement data and the initial data, wherein the diameters of the positioning rods 2 are the same, the diameters of the detection rods 3 are also the same, and the difference value between the measurement data and the initial data is acquired, so that the center distance between two adjacent pin holes is measured according to the principle of increasing, reducing and reducing the radius. Therefore, the problem that the center distance cannot be detected due to different apertures, different Z-direction coordinates and different Y-direction coordinates of the front and rear suspension lug pins at present is solved.
Further, in order to maintain higher accuracy of the vehicle frame in the detection process, please refer to fig. 11, in this embodiment, the detection tool 100 further includes a plurality of support columns 6, a lower end of each of the support columns 6 is supported on the detection table 1, an upper end of each of the support columns 6 is used for supporting the vehicle frame, each of the support columns 6 is movably disposed on the detection table 1 in the up-down direction, which can adjust a height of an upper end of each of the support columns 6, and the vehicle frame is vertically adjusted along with each of the support columns 6, so that an upper surface of the vehicle frame is horizontal, thereby providing a precondition for ensuring accurate detection.
Specifically, in order to facilitate fine adjustment of each support pillar 6, in this embodiment, the detection tool 100 further includes an adjusting seat 7, the adjusting seat 7 is disposed on the detection table 1, and an internal threaded hole extending up and down is formed in the adjusting seat 7 along the axial direction; each supporting column 6 is provided with an external thread to be in threaded connection with the adjusting seat 7, when the height of the supporting column 6 in the vertical direction needs to be adjusted, the supporting column 6 can be rotated, when the thread fit degree is high, the height of the supporting column 6 relative to the detection platform 1 is reduced, and when the thread fit degree is reduced, the height of the supporting column 6 relative to the detection platform 1 is increased.
Further, in order to facilitate the rotation of the supporting columns 6, in this embodiment, a pin hole is radially formed in the upper end of each supporting column 6, an adjusting pin 8 penetrates through each pin hole, two ends of each adjusting pin 8 respectively extend out from two corresponding sides of the supporting column 6, when the adjusting device is used for adjusting, two ends of each adjusting pin 8 rotate along the circumferential direction of the supporting column 6, and each supporting column 6 moves up and down along the shaft, so that the upper surface of the frame is horizontal, and the adjusting device is beneficial to adjusting two ends of each adjusting pin 8 by using a lever principle, and is convenient and labor-saving.
Further, in order to enable the frame to be stably supported on each of the supporting pillars 6, please refer to fig. 11 to 12, in this embodiment, a top portion of each of the supporting pillars 6 is disposed in a tapered shape, and the top portion of each of the supporting pillars 6 is configured to penetrate through the longitudinal beam holes on the first longitudinal beam 1000 and the second longitudinal beam 2000, so that morphological characteristics of the frame itself are well utilized, and the supporting pillars 6 are disposed in such a manner, which not only facilitates processing, but also achieves a good positioning effect.
The invention also provides a detection method for detecting the coaxiality and the center distance of the lifting lug pin hole of the frame, which is implemented by using the detection tool 100 and comprises the following steps:
disposing the frame on top of a plurality of the support pillars 6, the top of the plurality of support pillars 6 passing through stringer holes on the first stringer 1000 and the second stringer 2000; this enables the frame to be stably supported on the test stand 1.
The two ends of each adjusting pin 8 rotate along the circumferential direction of the supporting column 6, and each supporting column 6 moves up and down along the shaft, so that the upper surface of the frame is horizontal, and the detection premise is guaranteed.
The positioning rod 2 is inserted from the lifting lug pin hole in the second direction b from the side of the first longitudinal beam 1000 away from the second longitudinal beam 2000 until the first step surface 22 abuts against the lifting lug on the first longitudinal beam 1000.
The detection rod 3 is inserted from the second side member 2000 on the side away from the first side member 1000 in the second direction b through the shackle pin hole until the second step surface 32 abuts against the shackle on the second side member 2000.
When the alignment protrusion 21 is inserted into the alignment groove 31, the detection rod 3 is coaxial with the positioning rod 2, and when the alignment protrusion 21 cannot be inserted into the alignment groove 31, the detection rod 3 is not coaxial with the positioning rod 2, so that the coaxiality of the left lifting lug and the right lifting lug can be detected.
And placing the first identification part 4 on the detection table 1, and adjusting one side, far away from the frame, of the first identification part 4 until the end face, adjacent to one of the two axial detection parts, of the two axial detection parts is flush with the end face in the first direction a.
And placing the second identification part 5 on the detection table 1, and adjusting one side, far away from the frame, of the second identification part 5 until the end face of the other axial detection piece is flush with the end face of the other axial detection piece in the first direction a.
And abutting the starting end of the measuring part with the first abutting surface of the first identification part 4 to obtain the starting data of the starting end.
And abutting the measuring end of the measuring piece with the second abutting surface of the second identification part 5 to acquire the measuring data of the measuring end.
And acquiring a difference L between the measurement data and the initial data, wherein the diameters of the positioning rods 2 are the same, the diameters of the detection rods 3 are also the same, and the difference L between the measurement data and the initial data is acquired and is equivalent to measuring the center distance between two adjacent pin holes according to the principle of increasing, reducing and reducing the radius.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a detect frock for detect axiality and centre-to-centre spacing of lug pinhole of frame, the frame has first longeron and the second longeron that extends along the first direction, first longeron with the second longeron is the interval setting in the second direction, first longeron with the second longeron is followed respectively a plurality of lug pinholes have been seted up at the first direction interval, its characterized in that, detect the frock and include:
the detection table is used for supporting the frame;
the axial detection piece is arranged on the first longitudinal beam and the second longitudinal beam in a manner of being opposite to each other along the second direction and can be assembled with the lifting lug pin hole so as to detect the coaxiality of the lifting lug pin hole; and the number of the first and second groups,
the measuring component comprises a plurality of identification parts and a measuring part, the identification parts are respectively matched with the lifting lug pin holes in a one-to-one correspondence mode and used for identifying the positions of the lifting lug pin holes, the measuring part is used for measuring the distance between two adjacent identification parts in the first direction on the first longitudinal beam or the second longitudinal beam so as to detect the center distance between two adjacent lifting lug pin holes;
the axial detection piece comprises a positioning rod and a detection rod, wherein the positioning rod is used for being inserted into each lifting lug pin hole of each first longitudinal beam so as to be provided with a first end far away from the second longitudinal beam and a second end close to the second longitudinal beam;
the detection rod is used for being inserted into each lifting lug pin hole of each second longitudinal beam so as to be provided with a first end far away from the first longitudinal beam and a second end close to the first longitudinal beam;
the detection rod is provided with a movable stroke close to the positioning rod, a detection structure is arranged between the second end of the detection rod and the second end of the positioning rod, and the detection structure is used for measuring the coaxiality of the detection rod and the positioning rod;
each identification part extends along the vertical direction, and each identification part is flush with the end surface of each axial detection piece on one side far away from the frame in the first direction, so that two adjacent identification parts are arranged along the first direction;
the two adjacent identification parts comprise a first identification part and a second identification part, a first contact surface is arranged on one side of the first identification part in the second direction, a second contact surface is arranged on one side of the second identification part in the second direction, and the first contact surface and the second contact surface are respectively positioned on the same side of the first identification part and the second identification part in the second direction;
the measuring piece extends along the first direction to be provided with a starting end attached to the first attached surface and a measuring end attached to the second attached surface, and the distance between two adjacent identification parts in the first direction is measured according to the measuring data of the measuring end and the measuring data of the starting end.
2. The detection tool of claim 1, wherein the detection structure comprises an alignment protrusion protruding from a second end surface of one of the positioning rod and the detection rod, and an alignment groove formed in a second end surface of the other of the positioning rod and the detection rod, and the alignment protrusion is adapted to the alignment groove, so that when the alignment protrusion is inserted into the alignment groove, the detection rod is coaxial with the positioning rod.
3. The detection tool according to claim 2, wherein the first end of the positioning rod is provided with a first step surface annularly arranged on the periphery of the positioning rod, and the first step surface is used for abutting against each lifting lug pin hole on one side, far away from the second longitudinal beam, of the first longitudinal beam;
the first end of the detection rod is provided with a second step surface which is annularly arranged on the periphery of the detection rod, and the second step surface is used for being abutted with each lifting lug pin hole on one side, far away from the first longitudinal beam, of the second longitudinal beam.
4. The inspection tool according to claim 3, further comprising a plurality of support columns, wherein the lower ends of the plurality of support columns are supported by the inspection table, the upper ends of the plurality of support columns are used for supporting the vehicle frame, and each support column is movably arranged on the inspection table in the up-down direction so that the upper surface of the vehicle frame is horizontal.
5. The detection tool according to claim 4, further comprising an adjusting seat, wherein the adjusting seat is arranged on the detection table, and an internal threaded hole extending up and down is formed in the adjusting seat along the axial direction;
and each supporting column is provided with an external thread so as to be in threaded connection with the adjusting seat.
6. The detection tool according to claim 5, wherein a pin hole is radially formed in the upper end of each support column, an adjusting pin penetrates through each pin hole, and two ends of each adjusting pin respectively extend out of two corresponding sides of each support column.
7. The detection tool of claim 6, wherein the top of each support column is tapered, and the top of each support column is configured to penetrate through a longitudinal beam hole in the first longitudinal beam and the second longitudinal beam.
8. A detection method for detecting the coaxiality and the center distance of a lifting lug pin hole of a vehicle frame is characterized by being detected by the detection tool according to claim 7, and the detection method comprises the following steps:
placing the frame on top of a plurality of the support pillars, the top of the plurality of support pillars being disposed through stringer holes on the first and second stringers;
rotating two ends of each adjusting pin along the circumferential direction of the supporting columns, and enabling each supporting column to move up and down along an axial direction so that the upper surface of the frame is horizontal;
inserting the positioning rod from one side of the first longitudinal beam far away from the second longitudinal beam along the second direction from the lifting lug pin hole until the first step surface is abutted to the lifting lug pin hole on the first longitudinal beam;
inserting the detection rod from one side of the second longitudinal beam far away from the first longitudinal beam along the second direction from the lifting lug pin hole until the second step surface is abutted to the lifting lug pin hole on the second longitudinal beam;
when the alignment bulge is inserted in the alignment groove, the detection rod is coaxial with the positioning rod;
placing the first identification part on the detection table, and adjusting one side, far away from the frame, of the first identification part until the first identification part is flush with the end face, in the first direction, of one of the two adjacent axial detection pieces;
placing the second identification part on the detection table, and adjusting one side, far away from the frame, of the second identification part until the second identification part is flush with the end face of the other axial detection piece in the first direction;
attaching the starting end of the measuring part to the first attaching surface of the first identification part to obtain the starting data of the starting end;
the measuring end of the measuring piece is attached to the second attaching surface of the second identification part, and measuring data of the measuring end is obtained;
and acquiring a difference value between the measurement data and the initial data, and measuring the center distance between two adjacent lifting lug pin holes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110463277.8A CN113203345B (en) | 2021-04-27 | 2021-04-27 | Detection tool and detection method |
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| CN202110463277.8A CN113203345B (en) | 2021-04-27 | 2021-04-27 | Detection tool and detection method |
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| CN113203345B true CN113203345B (en) | 2022-01-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114413710B (en) * | 2022-01-14 | 2024-03-19 | 一汽解放汽车有限公司 | Frame assembly gauge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202903110U (en) * | 2012-11-08 | 2013-04-24 | 东风汽车有限公司 | Leaf spring and frame front and back lug axis parallelism detection tool |
| CN103047920B (en) * | 2012-12-18 | 2015-10-21 | 广东尚高科技有限公司 | A kind of limit, hole distance mearuring equipment |
| CN103727903A (en) * | 2014-01-18 | 2014-04-16 | 中国重汽集团济南动力有限公司 | Method and device for detecting coaxiality of left and right longitudinal beams of automobile frame |
| CN104111016A (en) * | 2014-06-24 | 2014-10-22 | 湖北精工钢结构有限公司 | Bole pitch measurement apparatus |
| CN105806193B (en) * | 2016-05-19 | 2018-08-31 | 河南瑞创通用机械制造有限公司 | A kind of coaxiality detecting tool |
| CN106152916A (en) * | 2016-08-31 | 2016-11-23 | 无锡富瑞德测控仪器股份有限公司 | A kind of band table center distance check tool |
| CN107655373B (en) * | 2017-08-31 | 2019-11-26 | 安徽江淮汽车集团股份有限公司 | A kind of truck frame assembly suspension strut testing agency |
| CN111366122A (en) * | 2018-12-26 | 2020-07-03 | 河南森源重工有限公司 | Frame longitudinal beam flatness measuring method and frame positioning detection tool |
| CN111872313B (en) * | 2020-07-24 | 2021-06-18 | 安徽江淮汽车集团股份有限公司 | Coaxiality correcting device for vehicle frame lifting lug support |
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