CN114646287B - Quick detection tool and detection method for verticality of inner hole of earring and cylinder barrel - Google Patents
Quick detection tool and detection method for verticality of inner hole of earring and cylinder barrel Download PDFInfo
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- CN114646287B CN114646287B CN202011510180.XA CN202011510180A CN114646287B CN 114646287 B CN114646287 B CN 114646287B CN 202011510180 A CN202011510180 A CN 202011510180A CN 114646287 B CN114646287 B CN 114646287B
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- earring
- inner hole
- branch
- mandrel
- contact part
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- 238000001514 detection method Methods 0.000 title claims abstract description 93
- 238000007689 inspection Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 210000003027 ear inner Anatomy 0.000 description 3
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the field of detection tools and discloses a quick detection tool and a detection method for verticality of an inner hole of an earring and a cylinder barrel. The first contact part is positioned relative to the cylinder barrel to obtain a first detection result, the first contact part and the second contact part are in contact with the inner wall of the inner hole of the earring to obtain a second detection result, and the verticality of the inner hole of the earring and the cylinder barrel can be obtained through the difference value of the first detection result and the second detection result.
Description
Technical Field
The invention relates to a detection tool, in particular to a quick detection tool and a detection method for verticality of an inner hole of an earring and a cylinder barrel.
Background
The hydraulic cylinder is a common device in the field of engineering machinery, in order to ensure the use, the inner hole of an earring and a cylinder barrel of the hydraulic cylinder are required to have good verticality, otherwise, the service life of the hydraulic cylinder is influenced and the action of related components (such as a boom system) is offset during the use, so that the connecting structure of the components is worn. In the prior art, the verticality of the inner hole of the earring and the cylinder barrel is usually detected by using a three-coordinate detection mode, but the hydraulic cylinder is required to be transported to a three-coordinate detector for fixing, the fixing operation is troublesome, the detection period is long, and the detection is not suitable for batch detection.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, the verticality detection of an inner hole of an earring and a cylinder barrel is complex, the period is long and the detection is not suitable for batch detection, and provides a quick detection tool for the verticality of the inner hole of the earring and the cylinder barrel, which can be used for quickly detecting the verticality of the inner hole of the earring and the cylinder barrel.
In order to achieve the above object, according to one aspect of the present invention, there is provided a quick inspection tool for the perpendicularity of an earring inner hole and a cylinder tube, wherein the quick inspection tool includes a inspection base including a spindle which can be inserted into an earring inner hole of a hydraulic cylinder, an angle inspection unit mounted to the inspection base, and a positioning member for positioning the spindle with respect to the earring inner hole, the spindle including a first contact portion which maintains a fixed orientation with the angle inspection unit and a second contact portion which is provided to be movable with respect to the first contact portion so that the first contact portion and the second contact portion are brought into contact with a side wall of the earring inner hole in a circumferential direction of the earring inner hole when the spindle is inserted into the earring inner hole.
Preferably, the tail end of the first contact part is an arc surface matched with the side wall of the inner hole of the earring.
Preferably, the mandrel has a recess, and the second contact portion includes a sphere biased into the recess by an elastic member so that the sphere can protrude out of the recess.
Preferably, the cross section of the mandrel is X-shaped and comprises a first branch, a second branch, a third branch and a fourth branch which are adjacent in sequence and form an X-shape, the first contact part is arranged on the first branch and the second branch, and the second contact part is arranged on the third branch and the fourth branch.
Preferably, the lengths of the first, second, third and fourth branches extending in the radial direction of the mandrel are the same.
Preferably, the ends of the third and fourth branches are flush and planar; and/or a positioning surface for positioning the cylinder barrel is arranged between the third branch and the fourth branch.
Preferably, one end of the base is provided with a mounting groove for mounting the angle detection unit and a mounting hole penetrating from the mounting groove to an end face of the base, and the angle detection unit is fixed to the mounting groove by a fastener penetrating the mounting hole.
Preferably, the positioning piece protrudes from the mandrel; and/or the positioning piece is rod-shaped and has a length perpendicular to the axial direction of the mandrel.
Preferably, the length direction of the positioning piece is parallel to the bottom surface of the mounting groove.
According to another aspect of the present application, there is provided a method for detecting verticality of an inner hole of an earring and a cylinder barrel, the method using the quick inspection tool of the present application, wherein the method comprises:
s1, positioning the first contact part relative to a cylinder barrel, and obtaining a first detection result through the angle detection unit;
s2, inserting the mandrel into an inner hole of the earring, and positioning the mandrel relative to the inner hole of the earring through the positioning piece;
s3, the angle detection unit obtains a second detection result, and an included angle x between the axis of the cylinder barrel and the axis of the inner hole of the earring is obtained through calculation, wherein x=the second detection result-the first detection result;
and S4, obtaining verticality y according to a formula y=K×x, wherein K is a constant 3.26.
Through the technical scheme, the first detection result can be obtained through the angle detection unit by positioning the first contact part relative to the cylinder barrel, then the mandrel is inserted into the inner hole of the earring, so that the first contact part and the second contact part are both in contact with the inner wall of the inner hole of the earring, the second detection result is obtained through the angle detection unit, and the verticality of the inner hole of the earring and the cylinder barrel can be further calculated and obtained through the difference value of the first detection result and the second detection result. By using the quick detection tool, detection can be quickly and conveniently performed.
Drawings
FIG. 1 is a perspective view of one embodiment of a quick test tool of the present application;
fig. 2 is a schematic illustration of a cylinder barrel and earring of a hydraulic cylinder detected using the quick-test tool of the present application.
Description of the reference numerals
10-detecting base, 11-mandrel, 111-first contact part, 112-second contact part, 1121-sphere, 12-mounting groove, 13-locating surface, 20-angle detecting unit, 30-locating piece, 40-fastener, 50-cylinder, 60-earring, 61-earring inner hole.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the present invention, unless otherwise specified, terms such as "upper, lower, left, and right" and "upper, lower, left, and right" are used generically to refer to the upper, lower, left, and right illustrated in the drawings; "inner and outer" means inner and outer relative to the contour of the respective parts themselves. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The application provides a quick inspection tool of earring hole and cylinder straightness, wherein, quick inspection tool includes detection base 10, install in detection base 10's angle detection unit 20 and setting element 30, detection base 10 includes the dabber 11 that can stretch into the earring hole of pneumatic cylinder, setting element 30 is used for making dabber 11 is fixed a position for the earring hole, dabber 11 includes first contact portion 111 and second contact portion 112, first contact portion 111 with angle detection unit 20 keeps fixed orientation, second contact portion 112 sets up to can move for first contact portion 111 makes first contact portion 111 and second contact portion 112 along the circumference of earring hole with the lateral wall of earring hole when dabber 11 stretches into the earring hole.
When the quick detection tool is used for detection, a first detection result can be obtained through the angle detection unit 20 by positioning the first contact part 111 relative to the cylinder barrel 50, then the mandrel 11 is inserted into the earring inner hole 61 and positioned through the positioning piece 30, so that the first contact part 111 and the second contact part 112 are both contacted with the inner wall of the earring inner hole 61 and a second detection result is obtained through the angle detection unit 20, and the perpendicularity of the earring inner hole 61 and the cylinder barrel 50 can be further calculated and obtained through the difference value of the first detection result and the second detection result. By using the quick detection tool, detection can be quickly and conveniently performed.
Specifically, when the mandrel 11 is placed in the earring inner hole 61, the second contact portion 112 is able to adaptively move such that the first contact portion 111 and the second contact portion 112 are in contact with the inner wall of the earring inner hole 61 in the circumferential direction of the earring inner hole 61, that is, by the first contact portion 111 and the second contact portion 112 abutting against the inner wall of the earring inner hole 61 in the circumferential direction of the earring inner hole 61, so that the contact points of the first contact portion 111 and the second contact portion 112 contacting the earring inner hole 61 are located on the same circumference as the earring inner hole 61, at which time the position of the first contact portion 111 can reflect the axial position of the earring inner hole 61, and thus a detection result related to the axial position of the earring inner hole 61 can be obtained by the angle detection unit 20 with the first contact portion 111 as a positioning reference.
Wherein, the first contact portion 111 is used as a positioning reference of the angle detecting unit 20, and when the first contact portion is placed in the earring inner hole 61, the first contact portion should ensure a stable contact with the earring inner hole 61 and have a constant contact force with the inner wall of the earring inner hole 61. For this purpose, the end of the first contact portion 111 may be a cambered surface that matches the sidewall of the earring inner hole.
In addition, in order to enable the second contact portion 112 to move when the mandrel 11 is inserted into the earring bore 61 such that the first contact portion 111 and the second contact portion 112 contact the sidewall of the earring bore in the circumferential direction of the earring bore, the second contact portion 112 may be in an offset state when the mandrel 11 is inserted into the earring bore 61. Preferably, the mandrel 11 has a recess, and the second contact portion 112 includes a sphere 1121 biased into the recess by an elastic member, so that the sphere 1121 can protrude out of the recess. Specifically, in a natural state, as shown in fig. 1, the sphere 1121 has a spherical surface portion protruding out of the concave hole under the biasing action of the elastic member; when the spindle 11 extends into the earring bore 61, the ball 121 contacts the inner wall of the earring bore 61 to compress the resilient member and partially retract into the recess so that only a smaller portion of the spherical surface protrudes out of the recess and through that portion of the spherical surface contacts the earring bore 61. The above movement of the sphere 1121 will cause the contact point of the first contact 111 and the sphere 1121 to engage the inner circumference of the earring bore 61.
To sufficiently contact the inner wall of the earring bore 61 by the first contact portion 111 and the second contact portion 112 to reflect the axial position of the earring bore 61, the first contact portion 111 and/or the second contact portion 112 may be brought into contact with a plurality of positions of the earring bore 61. On this basis, the mandrel 11 may be provided in various forms to meet the multi-point contact requirements.
Preferably, to achieve stability of the mandrel 11, as shown in fig. 1, the cross section of the mandrel 11 may be X-shaped and include a first branch, a second branch, a third branch, and a fourth branch that are adjacent in order to form an X-shape, where the first contact portion 111 is disposed on the first branch and the second branch, and the second contact portion 112 is disposed on the third branch and the fourth branch. The first branch and the third branch can form symmetrical arrangement with the second branch and the fourth branch so as to improve stability. Preferably, the first, second, third and fourth branches may be uniformly arranged along the circumferential direction of the mandrel 11.
The first contact portion 111 may be disposed along the longitudinal direction of the first and second branches, so that the contact point of the first contact portion 111 is a linear contact point parallel to the axis of the mandrel 11. The second contact portion 112 may include a plurality of recesses and a corresponding plurality of spheres 1121 arranged in the longitudinal direction of the third and fourth branches to form a plurality of contacts wired substantially parallel to the axis of the mandrel 11.
As described above, the second contact portion 112 can bring the first contact portion 111 and the second contact portion 112 into contact with the inner wall of the earring inner hole 61 only by a small movement. Therefore, the ends of the first contact portion 111 and the second contact portion 112 can be set to be initially, i.e., located at the same circumference. Thus, preferably, the first, second, third and fourth branches have the same length extending in the radial direction of the mandrel 11.
In order to facilitate the smooth support of the quick-inspection tool on the ground or the like when not in use, the ends of the third and fourth branches are flush and planar. In addition, a positioning surface for positioning with respect to the cylinder tube may be provided on the mandrel 11. In order to ensure a constant shape of the first contact portion 111, avoiding a collision with the first contact portion 111 when positioning with respect to the cylinder tube, the positioning surface may be arranged facing away from the first contact portion 111. For this purpose, a positioning surface 13 for positioning the cylinder is provided between the third and fourth branches. The positioning surface 13 may be a plane parallel to the axial direction of the mandrel 11, so that the positioning surface 13 is fitted to the end surface of the cylinder 50 when the first detection result is detected by positioning with respect to the cylinder. At this time, the linear contact of the first contact portion 111 is substantially parallel to the end face of the cylinder tube 50, i.e., perpendicular to the axis of the cylinder tube 50, and the first detection result of the angle detection unit 20 at this position may be set to 0 for detection. That is, the zeroing of the angle detection unit 20 can be performed by attaching the positioning surface 13 to the cylinder tube 50. Thereafter, when the mandrel 11 is put into the earring inner hole 61 in substantially the same posture, the second detection result detected by the angle detection unit 20 can be directly read and used for the subsequent calculation of perpendicularity.
In this application, a corresponding mounting positioning structure may be provided on the base 10 to ensure that the angle detection unit 20 is positioned with respect to the first contact portion 111. Preferably, one end of the base 10 is provided with a mounting groove 12 for mounting the angle detection unit 20 and a mounting hole penetrating from the mounting groove 12 to an end surface of the base 10, and the angle detection unit 20 is fixed to the mounting groove 12 by a fastener 40 penetrating the mounting hole.
In addition, when the spindle 11 is inserted into the earring inner hole 61, the positioning member 30 positions the spindle 11 with respect to the earring inner hole 61 to read the detection result of the angle detection unit 20 in a stationary state, and preferably, the positioning member 30 is provided protruding from the spindle 11. In use, a substantial portion of the mandrel 11 is extended into the earring bore 61, and the mandrel 11 is also positioned relative to the earring bore 61 by the positioning member 30, thereby ensuring that the extended portion of the mandrel 11 remains stable.
The positioning member 30 may take any suitable form, as long as it protrudes from the mandrel 11 and is positioned relative to the earring inner hole 61 when the mandrel 11 is inserted into the earring inner hole 61. Preferably, the positioning member 30 is rod-shaped and has a length perpendicular to the axial direction of the mandrel 11. In use, the axis of the inner ear ring hole 61 may be placed vertically (as shown in fig. 2), and most of the mandrel 11 may extend into the inner ear ring hole 61, and the mandrel 11 may be mounted on the upper end surface of the inner ear ring hole 61 by the positioning member 30. Specifically, for convenience of setting, the positioning member 30 may be disposed through the mandrel 11, so that both ends of the positioning member 30 protrude from the mandrel 11. More preferably, the positioning member 30 passes through the mandrel 11 intersecting the axis of the mandrel 11 to increase the erection stability.
In addition, the angle detecting unit 20 may be provided with a specific angular relationship with respect to the positioning member 30, so that the calibration and detection operations may be performed based on both as references. For example, the length direction of the positioning member 30 is parallel to the groove bottom surface of the mounting groove 12. In addition, the bottom surface of the mounting groove 12 can be parallel to the positioning surface 13, so that the quick-checking tool is stable in structure and has more flexible reference in operation.
According to another aspect of the present application, there is provided a method for detecting verticality of an inner hole of an earring and a cylinder barrel, the method using the quick inspection tool of the present application, wherein the method comprises:
s1, positioning the first contact part 111 relative to the cylinder barrel, and obtaining a first detection result through the angle detection unit 20;
s2, inserting the mandrel 11 into an inner hole of an earring, and positioning the mandrel relative to the inner hole of the earring through the positioning piece 30;
s3, the angle detection unit 20 obtains a second detection result, and an included angle x between the axis of the cylinder barrel and the axis of the inner hole of the earring is calculated and obtained, wherein x=the second detection result-the first detection result;
and S4, obtaining verticality y according to a formula y=K×x, wherein K is a constant 3.26.
Wherein in step S1, the first detection result may be set to be substantially 0, so that this step serves as a step of calibrating the angle detection unit 20. In this case, the second detection result obtained by step S3 is x.
The process of detecting verticality using the quick inspection tool of the present application is described below with reference to the accompanying drawings.
During detection, the cylinder 50 and the earring 60 maintain the attitude shown in fig. 2, i.e., the axis of the earring 60 is perpendicular to the ground.
First, the positioning surface 13 is brought into close contact with the end surface of the cylinder 50 so that the extending direction of the spindle 11 is vertically downward, i.e., in the same direction as the arrow at the end surface of the cylinder 50 shown in fig. 2, so that the reading of the angle detection unit 20 is substantially 0 (a slight deviation is allowed, for example, ±five thousandths of a degree).
The mandrel 11 is then extended into the earring bore 61 of the earring 60 in a generally vertical direction (indicated by the arrow at the earring bore 61 in fig. 2) such that the retainer 30 rides on the upper end of the earring 60. After the mandrel 11 is inserted into the earring inner hole 61, the sphere 1121 of the second contact portion 112 moves relative to the concave hole so that the first contact portion 111 and the second contact portion 112 contact the inner wall of the earring inner hole 61 in the circumferential direction of the earring inner hole 61. When the position of the spindle 11 is stable, a reading x (in °) of the angle detection unit 20 is taken.
Subsequently, the verticality y is obtained according to the empirical formula y=k×x. Wherein K is a constant of 3.26.
By comparing with the three-coordinate detection result, when the verticality y of the inner hole 61 of the earring and the cylinder barrel 50 is more than or equal to 0.05mm (namely, the unqualified standard of the workpiece), the verticality obtained by using the quick detection tool has consistency with the three-coordinate detection result. Therefore, the perpendicularity of the earring inner hole 61 and the cylinder tube 50 can be rapidly and accurately obtained by using the quick inspection tool of the present application.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. The technical solution of the invention can be subjected to a plurality of simple variants within the scope of the technical idea of the invention. The instant application comprises the combination of the specific features in any suitable manner. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (5)
1. A quick inspection tool for the perpendicularity of an inner hole of an earring and a cylinder barrel, which is characterized in that the quick inspection tool comprises an inspection base (10), an angle detection unit (20) mounted on the inspection base (10) and a positioning piece (30), wherein the inspection base (10) comprises a mandrel (11) capable of extending into the inner hole of the earring of a hydraulic cylinder, the positioning piece (30) is used for positioning the mandrel (11) relative to the inner hole of the earring, the mandrel (11) comprises a first contact part (111) and a second contact part (112), the first contact part (111) and the angle detection unit (20) keep a fixed orientation, the second contact part (112) is arranged to be capable of moving relative to the first contact part (111), so that when the mandrel (11) stretches into the inner hole of the earring, the first contact part (111) and the second contact part (112) are contacted with the side wall of the inner hole of the earring along the circumferential direction of the inner hole of the earring, the tail end of the first contact part (111) is an arc surface matched with the side wall of the inner hole of the earring, the mandrel (11) is provided with a concave hole, the second contact part (112) comprises a sphere (1121) biased into the concave hole through an elastic piece, so that the sphere (1121) can protrude out of the concave hole, the cross section of the mandrel (11) is X-shaped and comprises a first branch, a second branch, a third branch and a fourth branch which are adjacent in sequence and form the X-shape, the first contact part (111) is arranged on the first branch and the second branch, the second contact part (112) is arranged on the third branch and the fourth branch, and the lengths of the first branch, the second branch, the third branch and the fourth branch extending along the radial direction of the mandrel (11) are the same, wherein the tail ends of the third branch and the fourth branch are flush and are all plane surfaces; and/or a positioning surface (13) for positioning the cylinder barrel is arranged between the third branch and the fourth branch.
2. The quick inspection tool for the verticality of an inner hole of an earring and a cylinder tube according to claim 1, wherein one end of the base (10) is provided with a mounting groove (12) for mounting the angle detection unit (20) and a mounting hole penetrating from the mounting groove (12) to an end face of the base (10), and the angle detection unit (20) is fixed to the mounting groove (12) by a fastener (40) penetrating through the mounting hole.
3. The quick inspection tool for the verticality of an inner hole of an earring and a cylinder barrel according to claim 2, wherein the positioning piece (30) is protruded from the mandrel (11); and/or the positioning element (30) is rod-shaped and has a length perpendicular to the axial direction of the mandrel (11).
4. A quick inspection tool for the perpendicularity of an inner hole of an earring and a cylinder tube according to claim 3, wherein the length direction of the positioning member (30) is parallel to the groove bottom surface of the mounting groove (12).
5. A method for detecting verticality of an inner hole of an earring and a cylinder barrel, which uses the quick inspection tool as claimed in any one of claims 1 to 4, characterized in that the method comprises:
s1, positioning the first contact part (111) relative to a cylinder barrel, and obtaining a first detection result through the angle detection unit (20);
s2, inserting the mandrel (11) into an inner hole of an earring, and positioning the mandrel relative to the inner hole of the earring through the positioning piece (30);
s3, the angle detection unit (20) obtains a second detection result, and an included angle x between the axis of the cylinder barrel and the axis of the inner hole of the earring is obtained through calculation, wherein x=the second detection result-the first detection result;
and S4, obtaining verticality y according to a formula y=K×x, wherein K is a constant 3.26.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510180.XA CN114646287B (en) | 2020-12-18 | 2020-12-18 | Quick detection tool and detection method for verticality of inner hole of earring and cylinder barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510180.XA CN114646287B (en) | 2020-12-18 | 2020-12-18 | Quick detection tool and detection method for verticality of inner hole of earring and cylinder barrel |
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| Publication Number | Publication Date |
|---|---|
| CN114646287A CN114646287A (en) | 2022-06-21 |
| CN114646287B true CN114646287B (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011510180.XA Active CN114646287B (en) | 2020-12-18 | 2020-12-18 | Quick detection tool and detection method for verticality of inner hole of earring and cylinder barrel |
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| CN202885750U (en) * | 2012-08-18 | 2013-04-17 | 陈硕 | Tool for measuring perpendicularity of end face to axis of blind hole |
| CN207923102U (en) * | 2018-03-13 | 2018-09-28 | 北京它山石精密机械有限公司 | a kind of piston pin hole verticality measuring instrument |
| CN109373868A (en) * | 2018-08-01 | 2019-02-22 | 江苏理工学院 | A kind of plane inclined hole angle detection device and detection method |
| CN210892975U (en) * | 2020-01-06 | 2020-06-30 | 宜宾天工机械股份有限公司 | Quick detection device of valve tappet hole bottom surface straightness that hangs down |
| CN211552699U (en) * | 2019-12-11 | 2020-09-22 | 湘电风能有限公司 | Verticality measuring tool for long bolt installation screw hole |
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2020
- 2020-12-18 CN CN202011510180.XA patent/CN114646287B/en active Active
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|---|---|---|---|---|
| CN202885750U (en) * | 2012-08-18 | 2013-04-17 | 陈硕 | Tool for measuring perpendicularity of end face to axis of blind hole |
| CN207923102U (en) * | 2018-03-13 | 2018-09-28 | 北京它山石精密机械有限公司 | a kind of piston pin hole verticality measuring instrument |
| CN109373868A (en) * | 2018-08-01 | 2019-02-22 | 江苏理工学院 | A kind of plane inclined hole angle detection device and detection method |
| CN211552699U (en) * | 2019-12-11 | 2020-09-22 | 湘电风能有限公司 | Verticality measuring tool for long bolt installation screw hole |
| CN210892975U (en) * | 2020-01-06 | 2020-06-30 | 宜宾天工机械股份有限公司 | Quick detection device of valve tappet hole bottom surface straightness that hangs down |
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| CN114646287A (en) | 2022-06-21 |
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