CN112697021A - Method for rapidly detecting center distance of holes at two ends of connecting rod - Google Patents
Method for rapidly detecting center distance of holes at two ends of connecting rod Download PDFInfo
- Publication number
- CN112697021A CN112697021A CN202011455027.1A CN202011455027A CN112697021A CN 112697021 A CN112697021 A CN 112697021A CN 202011455027 A CN202011455027 A CN 202011455027A CN 112697021 A CN112697021 A CN 112697021A
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- Prior art keywords
- connecting rod
- detection
- holes
- end hole
- supporting
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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
Abstract
The invention discloses a method for rapidly detecting the center distance of holes at two ends of a connecting rod, which comprises the following steps: s1, firstly, measuring the nearest distance between the inner edges of the two holes of the connecting rod through a caliper; s2, inserting a connecting rod big end hole detection column into a connecting rod big end hole, and inserting a connecting rod small end hole detection column into a connecting rod small end hole; s3, placing the connecting rod big end hole detection column in the V-shaped grooves of the two supporting seats, and pressing a detection supporting pressing plate positioned above the connecting rod on the upper end of the connecting rod; and S4, measuring the size of the detection column of the small end hole of the connecting rod by detecting the dial indicator on the supporting pressure plate, and calculating the center distance of the holes at the two ends of the connecting rod. The two ends of the connecting rod are inserted into the holes through the corresponding detection columns, the shortest distance between the inner edges of the two holes of the connecting rod can be quickly measured through the caliper, and the center distance between the two ends of the connecting rod can be quickly detected by matching with the dial indicator to detect the detection columns.
Description
Technical Field
The invention relates to the technical field of detection of engine connecting rods, in particular to a method for rapidly detecting the center distance of holes at two ends of a connecting rod.
Background
The connecting rod of the automobile engine is a main part for transmitting power in the engine, two ends of a connecting rod body are respectively a big end and a small end, the big end of the connecting rod is provided with a big end hole of the connecting rod, the small end of the connecting rod is provided with a small end hole of the connecting rod, and the small end of the connecting rod is connected with a corresponding part through the end hole of the connecting rod; the center distance between a big head hole and a small head hole in the connecting rod body is a very important parameter, and detection is needed before delivery; the existing checking fixture is complex in structure and complex in center distance detection operation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method for rapidly detecting the center distance of holes at two ends of a connecting rod, and the detection of the center distance of the holes at two ends of the connecting rod is efficient.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the method for rapidly detecting the center distance of the holes at the two ends of the connecting rod comprises the following steps:
s1, firstly, measuring the nearest distance between the inner edges of the two holes of the connecting rod through a caliper;
s2, inserting a connecting rod big end hole detection column into a connecting rod big end hole, and inserting a connecting rod small end hole detection column into a connecting rod small end hole;
s3, placing the connecting rod big end hole detection column in the V-shaped grooves of the two supporting seats, and pressing a detection supporting pressing plate positioned above the connecting rod on the upper end of the connecting rod;
and S4, measuring the size of the detection column of the small end hole of the connecting rod by detecting the dial indicator on the supporting pressure plate, and calculating the center distance of the holes at the two ends of the connecting rod.
Wherein the content of the first and second substances,
when the connecting rod big-end hole detection column is placed on the supporting seat, the detection supporting pressing plate is lifted firstly.
The connecting rod big end hole detection column is placed on the two supporting seats, and drives one supporting seat to move and clamp the big end of the connecting rod.
The detection supporting pressing plate is lifted up through the jacking cylinder arranged below, the jacking cylinder does not work after the connecting rod is placed, the pressure spring above the detection supporting pressing plate acts on the detection supporting pressing plate, and the detection supporting pressing plate is automatically pressed at the upper end part of the connecting rod.
Compared with the prior art, the invention has the following advantages:
the method for rapidly detecting the center distance between the holes at the two ends of the connecting rod is reasonable in design, the corresponding detection columns are inserted into the holes at the two ends of the connecting rod, the shortest distance between the inner edges of the two holes of the connecting rod can be rapidly measured through the caliper, and the center distance between the holes at the two ends of the connecting rod can be rapidly detected by matching with the dial indicator to detect the detection columns.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic view of a gauge structure utilized in the present invention.
FIG. 2 is a schematic view of a connecting rod large-end hole detecting column support seat according to the present invention.
In the figure:
1. the device comprises a bottom plate, 2-connecting rod big-end-hole detection column supporting seats, 201-V-shaped supporting grooves, 202-positioning clamping grooves, 3-vertical guide columns, 4-detection supporting pressing plates, 5-dial indicators, 6-compression springs, 7-top plates and 8-jacking cylinders.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
The method for rapidly detecting the center distance of the holes at the two ends of the connecting rod comprises the following steps:
s1, firstly, measuring the nearest distance between the inner edges of the two holes of the connecting rod through a caliper;
s2, inserting a connecting rod big end hole detection column into a connecting rod big end hole, and inserting a connecting rod small end hole detection column into a connecting rod small end hole;
s3, placing the connecting rod big end hole detection column in the V-shaped grooves of the two supporting seats, and pressing a detection supporting pressing plate positioned above the connecting rod on the upper end of the connecting rod;
and S4, measuring the size of the detection column of the small end hole of the connecting rod by detecting the dial indicator on the supporting pressure plate, and calculating the center distance of the holes at the two ends of the connecting rod.
Wherein the content of the first and second substances,
when the connecting rod big-end hole detection column is placed on the supporting seat, the detection supporting pressing plate is lifted, the space between the detection supporting pressing plate and the supporting seat below is enlarged, and the connecting rod placing operation is facilitated.
The connecting rod big end hole detection column is placed on the two supporting seats, one supporting seat is driven to move to clamp the big end of the connecting rod, the connecting rod can be guaranteed to be in a vertical state, and detection data are accurate.
The detection supporting pressure plate rises and is jacked up through a jacking cylinder arranged below the detection supporting pressure plate, the jacking cylinder does not work after the connecting rod is placed, the detection supporting pressure plate acts on the detection supporting pressure plate through a pressure spring above the detection supporting pressure plate, and the detection supporting pressure plate is automatically pressed on the upper end part of the connecting rod; the operation is simple.
The method for rapidly detecting the center distance of the holes at the two ends of the connecting rod has reasonable design, and can rapidly detect the center distance of the holes at the two ends of the connecting rod by inserting the corresponding detection columns into the holes at the two ends of the connecting rod and matching with the dial indicator to detect the detection columns because the shortest distance between the inner edges of the holes at the two ends of the connecting rod can be rapidly measured by the caliper.
As shown in fig. 1 and 2, the preferred specific structure of the detection tool used in the method for rapidly detecting the center distance between the holes at the two ends of the connecting rod is as follows:
the checking fixture comprises a bottom plate 1, a connecting rod big-end hole detection column supporting seat 2 and a group of vertical guide columns 3 are arranged on the bottom plate, a top plate 7 is arranged at the tops of the vertical guide columns, a detection supporting pressing plate 4 capable of moving up and down is arranged on the vertical guide columns, a pressure spring 6 is sleeved on the guide columns between the top plate and the detection supporting pressing plate, a jacking cylinder 8 is arranged on the bottom plate, the upper end of a piston rod of the jacking cylinder is connected with the detection supporting pressing plate, and a dial indicator 5 is arranged on the detection supporting pressing plate.
The group of vertical guide pillars is four vertical guide pillars which are vertically arranged side by side, the detection supporting pressing plate is a rectangular plate, and the vertical guide pillars are arranged corresponding to the corners of the detection supporting pressing plate; the jacking cylinder is arranged between the group of vertical guide posts. The structure is compact.
One side of the detection supporting pressure plate 4 extends towards the side of the supporting seat to form a protruding part, and the dial indicator is arranged on the protruding part. The V-shaped supporting groove 201 is arranged on the connecting rod big end hole detecting column supporting seat and can support detecting columns with various dimensions. .
During detection, the corresponding detection columns are inserted into holes at two ends of the connecting rod, the detection columns for the large-head hole of the connecting rod are inserted into the large-head hole of the connecting rod, and the detection columns for the small-head hole of the connecting rod are inserted into the small-head hole of the connecting rod; the jacking cylinder jacks up the detection supporting pressure plate, the space between the extension part of the detection supporting pressure plate and the supporting seat is enlarged, the detection column of the large-head hole of the connecting rod is placed in the supporting seat, the connecting rod is in a vertical state, the jacking cylinder does not work, the detection supporting pressure plate is pressed on the small-head end of the connecting rod through a pressure spring to be positioned, and the detection column of the small-head hole of the connecting rod inserted into the small-head hole of the connecting rod is measured through a dial indicator on the extension part; the shortest distance between the inner edges of the two holes of the connecting rod can be quickly measured by a caliper; therefore, the center distance between the holes at the two ends of the connecting rod can be rapidly measured and calculated.
The two connecting rod big-end hole detection column supporting seats are arranged side by side, and a space for avoiding the end part of the connecting rod is arranged between the two connecting rod big-end hole detection column supporting seats.
Furthermore, one of the two connecting rod large-end hole detection column supporting seats is a fixed seat, the other one is a movable seat, and a driving cylinder is arranged on the bottom plate corresponding to the movable seat; and positioning clamping grooves 202 used for being clamped in the side surfaces of the connecting rods to be convex are respectively arranged on the opposite sides of the two connecting rod big end hole detection column supporting seats. The connecting rod big end hole detection column is placed in the V-shaped support groove, the lower end of the connecting rod can be quickly positioned through the two support seats, the connecting rod is guaranteed to be in a vertical state, and detection data are accurate.
The above-mentioned features are merely for describing preferred embodiments of the present invention and may be arbitrarily combined to form a plurality of embodiments of the present invention.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (4)
1. A method for rapidly detecting the center distance of holes at two ends of a connecting rod is characterized in that: the method for rapidly detecting the center distance of the holes at the two ends of the connecting rod comprises the following steps:
s1, firstly, measuring the nearest distance between the inner edges of the two holes of the connecting rod through a caliper;
s2, inserting a connecting rod big end hole detection column into a connecting rod big end hole, and inserting a connecting rod small end hole detection column into a connecting rod small end hole;
s3, placing the connecting rod big end hole detection column in the V-shaped grooves of the two supporting seats, and pressing a detection supporting pressing plate positioned above the connecting rod on the upper end of the connecting rod;
and S4, measuring the size of the detection column of the small end hole of the connecting rod by detecting the dial indicator on the supporting pressure plate, and calculating the center distance of the holes at the two ends of the connecting rod.
2. The method for rapidly detecting the center distance between the holes at the two ends of the connecting rod as claimed in claim 1, wherein: when the connecting rod big-end hole detection column is placed on the supporting seat, the detection supporting pressing plate is lifted firstly.
3. The method for rapidly detecting the center distance between the holes at the two ends of the connecting rod as claimed in claim 1, wherein: the connecting rod big end hole detection column is placed on the two supporting seats, and drives one supporting seat to move and clamp the big end of the connecting rod.
4. The method for rapidly detecting the center distance between the holes at the two ends of the connecting rod as claimed in claim 2, wherein: the detection supporting pressing plate is lifted up through the jacking cylinder arranged below, the jacking cylinder does not work after the connecting rod is placed, the pressure spring above the detection supporting pressing plate acts on the detection supporting pressing plate, and the detection supporting pressing plate is automatically pressed at the upper end part of the connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011455027.1A CN112697021B (en) | 2020-12-10 | 2020-12-10 | Method for rapidly detecting center distance of holes at two ends of connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011455027.1A CN112697021B (en) | 2020-12-10 | 2020-12-10 | Method for rapidly detecting center distance of holes at two ends of connecting rod |
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| Publication Number | Publication Date |
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| CN112697021A true CN112697021A (en) | 2021-04-23 |
| CN112697021B CN112697021B (en) | 2022-11-08 |
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| CN202011455027.1A Active CN112697021B (en) | 2020-12-10 | 2020-12-10 | Method for rapidly detecting center distance of holes at two ends of connecting rod |
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| CN112697021B (en) | 2022-11-08 |
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