CN107726966B - Omega-shaped spring strip symmetry balance needle type rapid detection tool and detection method - Google Patents
Omega-shaped spring strip symmetry balance needle type rapid detection tool and detection method Download PDFInfo
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- CN107726966B CN107726966B CN201710903871.8A CN201710903871A CN107726966B CN 107726966 B CN107726966 B CN 107726966B CN 201710903871 A CN201710903871 A CN 201710903871A CN 107726966 B CN107726966 B CN 107726966B
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- balance
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- adjustable dial
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- 238000001514 detection method Methods 0.000 title abstract description 15
- 238000000034 method Methods 0.000 claims description 13
- 238000007689 inspection Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000008092 positive effect Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
Classifications
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses an omega-shaped bullet strip symmetry balance needle type rapid detection tool and a detection method, wherein the detection tool comprises a base, a reference positioning plate, a reference shaft, a balance needle and an adjustable dial; the reference shaft is fixedly arranged on the central line of the base, the balance needle and the adjustable dial are symmetrically arranged on the left side and the right side of the reference shaft, and the rotating shaft of the balance needle is provided with a reset torsion spring. Compared with the prior art, the invention has the following positive effects: the measuring flow is simplified, the pointer is matched with the dial scale after the elastic strip is in place, a vernier caliper is not needed, calculation is not needed, and whether the symmetry degree of the elastic strip exceeds the limit can be measured by directly utilizing the swing amplitude of the pointer.
Description
Technical Field
The invention relates to an omega-shaped spring strip symmetry balance needle type rapid detection tool and a detection method.
Background
The existing method for detecting the symmetry index in the omega-shaped elastic strip is complicated and cannot be rapidly detected in mass production, the original detection method is as shown in fig. 1, a professional clamping fixture and a vernier caliper are used for detecting the left side size a1 and recording, then the right side size a2 is detected and recording, the absolute value of the a1-a2 is calculated according to the recording result to be used as the numerical value of the symmetry degree of the omega-shaped elastic strip, and the numerical value is smaller than a specified numerical value and is qualified. The measuring method requires training of the use of vernier calipers for operators and requires the operators to record and calculate simultaneously during the measuring process.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an omega-shaped spring strip symmetry balance needle type rapid detection tool and a detection method.
The technical scheme adopted for solving the technical problems is as follows: an omega-shaped spring strip symmetry balance needle type rapid detection tool comprises a base, a reference positioning plate, a reference shaft, a balance needle and an adjustable dial, wherein the reference positioning plate, the reference shaft, the balance needle and the adjustable dial are arranged on the base; the reference shaft is fixedly arranged on the central line of the base, the balance needle and the adjustable dial are symmetrically arranged on the left side and the right side of the reference shaft, and the rotating shaft of the balance needle is provided with a reset torsion spring.
The invention also provides a balance needle type quick inspection method for the symmetry degree of the omega-shaped spring strip, which comprises the following steps:
step one, adjusting the position of an adjustable dial according to the type of a spring strip, and calibrating the balance needle and the adjustable dial in a bilateral symmetry manner;
step two, closely attaching the tail parts of the elastic strips to a reference positioning plate;
thirdly, respectively closely attaching left and right limbs in the middle of the elastic strip to a reference shaft, and measuring scale values of the swing of the right swing needle and the left swing needle;
and step four, comparing the scale values of the swing needles at the left side and the right side to judge whether the symmetry degree of the spring strip is qualified or not.
Compared with the prior art, the invention has the following positive effects: the measuring flow is simplified, the pointer is matched with the dial scale after the elastic strip is in place, a vernier caliper is not needed, calculation is not needed, and whether the symmetry degree of the elastic strip exceeds the limit can be measured by directly utilizing the swing amplitude of the pointer.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a prior art omega spring symmetry detection;
fig. 2 is a schematic structural diagram of the testing tool.
Detailed Description
Omega-shaped spring strip symmetry balance needle type rapid checking fixture, as shown in fig. 2, comprises: base 1, benchmark locating plate 2, reference shaft 3, reset torsion spring 4, balance 5, pointer adjustment mechanism 6, scale mark 7, adjustable calibrated scale 8 etc. wherein:
the base 1 is a bearing platform of all components;
the datum positioning plate 2 is a positioning datum when the elastic strip is in place and is fixed on the bearing platform;
the reference shaft 3 is a positioning reference during spring strip test and is fixedly arranged on a middle line of the bearing platform;
the reset torsion spring 4 is a torsion spring for pointer reset and is arranged on the rotating shaft of the swing needle;
the swinging needle 5 is a swinging pointer;
the pointer adjusting mechanism 6 is arranged on the bearing platform and can adjust the initial positions of the left swing needle and the right swing needle;
the scale mark 7 is a scale mark on the dial;
adjustable dial 8: is arranged on the bearing platform and is adjusted in linkage with the pointer adjusting mechanism.
The invention also provides a balance needle type quick inspection method for the symmetry degree of the omega-shaped spring strip, which comprises the following steps: when the elastic strip is used, the positions of the balance needle and the dial are calibrated according to the width dimension of the elastic strip of a certain model (bilateral symmetry calibration), the symmetry degree of the elastic strip can be measured quickly after the calibration, the tail of the elastic strip is closely attached to the reference positioning plate during inspection, the elastic strip is pushed by hands to closely attach the left limb of the middle part of the elastic strip to the reference shaft, at the moment, the right pointer swings under the pushing of the edge of the right limb of the elastic strip, the scale pointed by the right balance needle is observed after the elastic strip is in place, the elastic strip is pushed after the numerical value is recorded, the elastic strip is pushed, the right limb of the middle part of the elastic strip is closely attached to the reference shaft (at the moment, the right pointer is automatically reset for the next measurement), at the moment, the left pointer is pushed by the edge of the left limb of the elastic strip to swing, the left pointer is observed after the elastic strip is in place, the scale value of the elastic strip is compared with the scale value of the right pointer, and the symmetry degree of the elastic strip can be judged to be qualified. Then the elastic strip is taken out, and the left swing needle is automatically reset due to the taking out of the elastic strip. And then subsequent product measurements can be made.
In order to more intuitively and simultaneously compare scales pointed by the left swing needle and the right swing needle, the elastic strip is pushed to closely attach the left limb in the middle of the elastic strip to the reference shaft, at the moment, the right pointer swings under the pushing of the edge of the right limb of the elastic strip, and after the elastic strip is in place and the right swing needle stops swinging, the swing position of the swing needle is fixed through the pointer adjusting mechanism 6; then the elastic strip is pushed, the right limb in the middle of the elastic strip is closely attached to the reference shaft, at the moment, the left pointer is pushed by the edge of the left limb of the elastic strip to swing, after the elastic strip is in place and the left swing needle stops swinging, the swing amplitude of the left swing needle and the swing amplitude of the right swing needle are compared and observed, and if the difference value of the swing amplitude and the swing amplitude does not exceed a specified value, the symmetry degree of the elastic strip is judged to be qualified. And then taking out the elastic strip, resetting the balance pins at the two sides, and then measuring the subsequent products.
The former gauge and method are complex in measurement, the numerical value needs to be recorded and calculated in measurement, the measurement result is influenced by the capacity of a measurer in using a caliper, and the possibility of error is increased due to the fact that the recording and the calculation are required. The invention can conveniently and rapidly measure the symmetry degree of omega-shaped spring strips with different sizes, directly compares the values of the scales of the left pointer and the right pointer, can obtain the symmetry degree difference value without recording and calculating because the comparison value is simplified to an integer value by the scale, and is convenient and rapid, thereby being very suitable for rapid detection in mass production processes such as spring strips.
The invention fully considers that the symmetry degree of the elastic strip is based on left-right deviation of the center line of the elastic strip, and the measuring device and the measuring method fully consider that the symmetry degree is measured by taking the center line of the elastic strip as a reference, thereby meeting the control requirement of the symmetry degree of the elastic strip. The invention simplifies the specific numerical value measured by the caliper into the integer value on the dial through the pointer and the dial, removes the recording and calculating processes, and can obtain the difference range through direct comparison.
Claims (3)
1. An inspection method of a swing needle type rapid inspection tool based on omega-shaped elastic strip symmetry degree is characterized by comprising the following steps of: the gauge comprises a base, a reference positioning plate, a reference shaft, a balance pin and an adjustable dial, wherein the reference positioning plate, the reference shaft, the balance pin and the adjustable dial are arranged on the base; the reference shaft is fixedly arranged on the central line of the base, the balance needle and the adjustable dial are symmetrically arranged at the left side and the right side of the reference shaft, and a reset torsion spring is arranged on the rotating shaft of the balance needle; pointer adjusting mechanisms are arranged on the left side and the right side of the base and are respectively connected with the balance pins on the left side and the right side; the adjustable dial is provided with scale marks; the adjustable dial is provided with a scale value counting mark; the inspection method comprises the following steps:
step one, adjusting the position of an adjustable dial according to the type of a spring strip, and calibrating the balance needle and the adjustable dial in a bilateral symmetry manner;
step two, closely attaching the tail parts of the elastic strips to a reference positioning plate;
thirdly, respectively closely attaching left and right limbs in the middle of the elastic strip to a reference shaft, and measuring scale values of the swing of the right swing needle and the left swing needle;
and step four, comparing the scale values of the swing needles at the left side and the right side to judge whether the symmetry degree of the spring strip is qualified or not.
2. The inspection method of claim 1, wherein: after the scale value of one side balance is measured, the swing position of the side balance is fixed through the pointer adjusting mechanism, and after the scale value of the other side balance is measured, the pointer adjusting mechanism is used for resetting the balance.
3. The inspection method of claim 1, wherein: the method for judging whether the symmetry of the spring strip is qualified comprises the following steps: and judging that the symmetry degree of the spring strip is qualified if the difference value of the scale values of the swing of the balance needles at the left side and the right side does not exceed a specified value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710903871.8A CN107726966B (en) | 2017-09-29 | 2017-09-29 | Omega-shaped spring strip symmetry balance needle type rapid detection tool and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710903871.8A CN107726966B (en) | 2017-09-29 | 2017-09-29 | Omega-shaped spring strip symmetry balance needle type rapid detection tool and detection method |
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| Publication Number | Publication Date |
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| CN107726966A CN107726966A (en) | 2018-02-23 |
| CN107726966B true CN107726966B (en) | 2024-04-05 |
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Families Citing this family (1)
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| CN113720236B (en) * | 2021-08-30 | 2024-05-31 | 中铁隆昌铁路器材有限公司 | Comprehensive detection platform and detection method for W1-type elastic strip |
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| CN107726966A (en) | 2018-02-23 |
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