CN112033337A - Quick detection device of plunger sphere circularity - Google Patents
Quick detection device of plunger sphere circularity Download PDFInfo
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- CN112033337A CN112033337A CN202010937782.7A CN202010937782A CN112033337A CN 112033337 A CN112033337 A CN 112033337A CN 202010937782 A CN202010937782 A CN 202010937782A CN 112033337 A CN112033337 A CN 112033337A
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- plunger
- roundness
- spherical surface
- tool body
- spherical
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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
- 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
- G01B21/20—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 contours or curvatures, e.g. determining profile
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention belongs to a geometric quantity detection technology, and particularly relates to a device and a method for quickly detecting the roundness of a plunger spherical surface. The device comprises a measuring component, a micrometer and a computer terminal, wherein the measuring component is electrically connected with the micrometer, and after the measuring component measures the spherical surface of the plunger, the micrometer acquires part measuring data; the micrometer is electrically connected with the computer terminal, the micrometer transmits the obtained part measurement data to the computer terminal, and the computer terminal processes the part measurement data to obtain the spherical roundness value of the plunger. The invention can achieve the following beneficial effects: a. the measurement accuracy can reach 0.25um, accords with 1/4 principle, satisfies measurement accuracy error requirement. b. The single-piece measurement time is within 20 seconds, and the method is light, easy to operate and applicable to processing sites.
Description
Technical Field
The invention belongs to a geometric quantity detection technology, and particularly relates to a device for quickly detecting the roundness of a spherical surface of a plunger.
Background
The roundness of the spherical surface of the plunger belongs to important process technological parameters of plunger parts, and the plunger parts are required to be detected piece by piece on a grinding site, the existing measuring equipment such as a high-precision three-coordinate measuring machine and a cylindricity measuring machine belongs to a metering type high-precision measuring instrument, and the site environment (temperature and humidity) does not meet the application conditions of precision equipment, so that the measurement is required in a laboratory environment, and the off-line measuring mode obviously cannot meet the requirement of measuring efficiency, so that the detection efficiency is low, and further the production and processing efficiency of the parts is influenced; in addition, the existing precision instrument cannot realize the precision detection according to requirements due to the influence of the structure of parts (discontinuous rotary spherical circle) and the precision of the instrument.
The prior art measurement method is as follows:
measurement protocol 1: the high-precision three-coordinate measuring machine is adopted, the measuring precision of the existing condition is 0.6um, the precision cannot meet the 1/3 principle specified by related detection calibration, and in addition, the equipment needs strict temperature and humidity conditions, so that the off-line measurement is required, and the requirement on the detection efficiency cannot be met;
measurement protocol 2: by adopting the cylindricity measuring machine, the roundness measuring precision of the existing equipment can reach 0.05um for a continuous revolution surface, and each piece of measuring time is about 10 minutes, but for the part (the discontinuous revolution surface), 360-degree revolution cannot be realized, so that the measurement cannot be carried out.
Therefore, for the roundness measurement of the discontinuous revolution surface structure of the spherical surface of the plunger, a device capable of realizing online real-time measurement and simultaneously meeting the requirement of detection precision is needed.
Disclosure of Invention
The purpose of the invention is: to prior art's not enough, provide a quick detection device of plunger sphere circularity, realize the on-the-spot detection of plunger sphere circularity to detect the precision and reach measuring error and be less than 0.3um, detection efficiency is less than 1 minute per piece.
The technical scheme of the invention is as follows: in order to achieve the above object, according to a first aspect of the present invention, there is provided a device for rapidly detecting roundness of a spherical surface of a plunger, comprising a measuring component 1, a micrometer 2, and a computer terminal 3, wherein the measuring component 1 is electrically connected to the micrometer 2, and after the spherical surface of the plunger is measured by the measuring component 1, the micrometer 2 obtains measurement data of a part; the micrometer 2 is electrically connected with the computer terminal 3, the micrometer 2 transmits the obtained part measurement data to the computer terminal 3, and the part measurement data is processed by the computer terminal 3 to obtain the plunger spherical surface roundness value.
In one possible embodiment, the measuring assembly 1 comprises a tool body 11, a positioning seat 12, a sensor 13, a sensor pressing block 14 and a part pressing plate 15;
the tool body 11 is of a cylindrical rotary structure, a plurality of clamping grooves 11a are formed in the upper end face of the tool body 11 along the circumferential radius direction and used for placing the sensor 13, and the sensor pressing block 14 is pressed on the sensor 13 and fixedly connected with the tool body 11; the positioning seat 12 is arranged at the rotation center of the tool body 11, a groove 12a matched with the shape of the plunger part to be detected is arranged on the upper end surface of the positioning seat 12, the spherical part of the plunger part to be detected is exposed, and the spherical positioning part of the groove 12a is arranged at the rotation center of the tool body 11.
In a possible embodiment, a part pressing plate 15 is arranged on the circumference of the upper end face of the tool body 11, and the part pressing plate 15 is connected with the tool body 11 in a relatively rotating manner.
In a possible embodiment, the part pressing plate 15 includes a base 151, a rotating shaft 152, and a pressing block 153, the base 151 is fixedly connected to the circumference of the upper end surface of the tool body 11, the base 151 has two oppositely disposed lugs, coaxial through holes are respectively disposed on the two lugs, a through hole is disposed at one end of the pressing block 153, and the pressing block 153 and the base 151 are rotatably connected through the rotating shaft 152.
In a possible embodiment, the upper end surface of the tool body 11 is further provided with a liquid storage tank 11b to keep constant temperature and reduce measurement errors caused by deformation caused by temperature.
In a possible embodiment, the depth of the clamping groove 11a on the tool body 11 should be set according to the size of the plunger part to be measured and the height of the positioning portion of the spherical portion of the groove 12a, so as to ensure that the center line of the sensor 13 is coplanar with the spherical center of the plunger part to be measured.
In a possible embodiment, the number of the card slots 11a on the tool body 11 is one of 4, 6 and 8, and the number of the corresponding sensors 13 is one of 4, 6 and 8, and preferably 6.
According to a second aspect of the present invention, a method for rapidly detecting the roundness of a spherical surface of a plunger is provided, which includes the following steps:
step 1: starting: respectively starting the calculation software on the micrometer 2 and the computer terminal 3, and stabilizing the measurement system for about 10 minutes;
step 2: calibration: placing the calibration ball on the measurement component 1, and clicking a zero clearing button of the operation software to finish roundness calibration;
and step 3: measurement: and (4) after taking out the calibration ball, putting the plunger part to be measured, clicking a measuring button of the operation software to finish measurement, and displaying the roundness value on a display of the computer terminal 3.
In a possible embodiment, in the step 2, a calibration ball is placed in a groove 12a spherical positioning portion on the positioning seat 12 included in the measuring assembly 1; in the step 3, the plunger part to be measured is placed in the groove 12 a.
In a possible embodiment, the step 2 further includes pressing the calibration ball by rotating the pressing block 153, and pressing and positioning the calibration ball by rotating the pressing block 153; the step 3 further includes pressing the spherical surface part of the plunger part to be measured by rotating the pressing block 153, and pressing and positioning the plunger part to be measured by rotating the pressing block 153.
The invention has the beneficial effects that:
a. the measurement precision can reach 0.25um, and the requirement of measurement precision error is met according to the requirement of GB/T1958 'shape and position tolerance detection regulation', and the measurement uncertainty is less than 1/4 tolerance;
b. the single measurement time is within 20 seconds;
c. light weight, easy operation and can be used for processing sites.
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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
FIG. 1 is a schematic view of the assembly of the present invention
FIG. 2 is a schematic structural diagram of a tool body 11 in the measurement assembly 1
FIG. 3 is a schematic view of a plunger part to be tested
Wherein:
1-a measuring component, 11-a tool body, 11 a-a clamping groove, 11 b-a liquid storage tank, 12-a positioning seat, 12 a-a groove, 13-a sensor, 14-a sensor pressing block, 15-a part pressing plate, 151-a base, 152-a rotating shaft and 153-a pressing block; 2-micrometer; 3-computer terminal
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention, and the terms "first", "second", "third" are used for descriptive purposes only and are not intended to indicate or imply relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; there may be communication between the interiors of the two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the device for rapidly detecting the roundness of the spherical surface of the plunger comprises a measuring component 1, a micrometer 2 and a computer terminal 3, wherein the measuring component 1 is electrically connected with the micrometer 2, and the micrometer 2 is electrically connected with the computer terminal 3; the measuring assembly 1 comprises a tool body 11, a positioning seat 12, a sensor 13, a sensor pressing block 14 and a part pressing plate 15; the tool body 11 is of a cylindrical rotary structure, 6 clamping grooves 11a are formed in the upper end face of the tool body 11 in the circumferential radius direction, the corresponding number of sensors 13 are placed, and the sensor pressing block 14 is pressed on the sensors 13 and fixedly connected with the tool body 11 through bolts; the positioning seat 12 is arranged at the rotation center of the tool body 11, a groove 12a matched with the shape of the plunger part to be detected is arranged on the upper end surface of the positioning seat 12, the spherical part of the plunger part to be detected is exposed, and the spherical positioning part of the groove 12a is arranged at the rotation center of the tool body 11; a part pressing plate 15 is arranged on the circumference of the upper end face of the tool body 11, the part pressing plate 15 comprises a base 151, a rotating shaft 152 and a pressing block 153, the base 151 is fixedly connected to the circumference of the upper end face of the tool body 11 through bolts, the base 151 is provided with two oppositely arranged lug plates, coaxial through holes are respectively formed in the two lug plates, a through hole is formed in one end of the pressing block 153, and the pressing block 153 is rotatably connected with the base 151 through the rotating shaft 152; a liquid storage tank 11b is further arranged on the upper end face of the tool body 11; the depth of the clamping groove 11a on the tool body 11 is set according to the size of the plunger part to be detected and the height of the positioning part of the spherical part of the groove 12a, and the central line of the sensor 13 and the spherical center of the plunger part to be detected are coplanar.
A method for rapidly detecting the roundness of a spherical surface of a plunger comprises the following steps:
1, starting: and respectively starting the calculation software on the micrometer 2 and the computer terminal 3, and stabilizing the measurement system for about 10 minutes.
2, calibration: the calibration ball is placed in the spherical positioning part in the groove 12a, the calibration ball is pressed by rotating the pressing block 153, and the zero clearing button of the operation software is clicked to finish roundness calibration.
3, measurement: and rotating the pressing block 153, taking out the calibration ball, putting in the plunger part to be measured, pressing the plunger part to be measured by rotating the pressing block 153, clicking a measurement button of the operation software to finish measurement, and displaying the roundness value on a display of the computer terminal 3.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. The device for rapidly detecting the roundness of the spherical surface of the plunger is characterized by comprising a measuring component (1), a micrometer (2) and a computer terminal (3), wherein the measuring component (1) is electrically connected with the micrometer (2), and after the spherical surface of the plunger is measured by the measuring component (1), part measuring data are obtained by the micrometer (2); the micrometer (2) is electrically connected with the computer terminal (3), the micrometer (2) transmits the acquired part measurement data to the computer terminal (3), and the part measurement data is processed by the computer terminal (3) to obtain the spherical roundness value of the plunger.
2. The device for rapidly detecting the roundness of the spherical surface of the plunger piston according to claim 1, wherein the measuring assembly (1) comprises a tool body (11), a positioning seat (12), a sensor (13), a sensor pressing block (14) and a part pressing plate (15);
the tool body (11) is of a cylindrical rotary structure, a plurality of clamping grooves (11a) are formed in the upper end face of the tool body (11) in the circumferential radius direction and used for placing the sensor (13), and the sensor pressing block (14) is pressed on the sensor (13) and fixedly connected with the tool body (11); the positioning seat (12) is arranged at the rotation center of the tool body (11), a groove (12a) matched with the shape of the plunger part to be detected is formed in the upper end face of the positioning seat (12), the spherical part of the plunger part to be detected is exposed, and the spherical positioning part of the groove (12a) is arranged at the rotation center of the tool body (11).
3. The device for rapidly detecting the roundness of the spherical surface of the plunger according to claim 2, wherein a part pressing plate (15) is arranged on the circumference of the upper end surface of the tool body (11), and the part pressing plate (15) is connected with the tool body (11) in a relatively rotating manner.
4. The device for rapidly detecting the roundness of the spherical surface of the plunger according to claim 3, wherein the part pressing plate (15) comprises a base (151), a rotating shaft (152) and a pressing block (153), the base (151) is fixedly connected to the circumference of the upper end surface of the tool body (11), the base (151) is provided with two oppositely arranged lug plates, coaxial through holes are respectively formed in the two lug plates, a through hole is formed in one end of the pressing block (153), and the pressing block (153) is rotatably connected with the base (151) through the rotating shaft (152).
5. The device for rapidly detecting the roundness of the spherical surface of the plunger piston according to claim 2, wherein the depth of the clamping groove (11a) in the tool body (11) is set according to the size of the plunger piston part to be detected and the height of the positioning part of the spherical part of the groove (12b), so as to ensure that the center line of the sensor (13) is coplanar with the spherical center of the plunger piston part to be detected.
6. The device for rapidly detecting the roundness of the spherical surface of the plunger according to claim 2, wherein the number of the slots (11a) on the tool body (11) is one of 4, 6 and 8, and the number of the corresponding sensors (13) is one of 4, 6 and 8.
7. The device for rapidly detecting the roundness of the spherical surface of the plunger according to any one of claims 2 to 6, wherein a reservoir (11b) is further provided on the upper end surface of the tool body (11).
8. A method for rapidly detecting the roundness of the spherical surface of a plunger, which is used for the device for rapidly detecting the roundness of the spherical surface of the plunger according to any one of claims 1 to 7, and is characterized by comprising the following steps:
step 1: starting: respectively starting the calculation software on the micrometer (2) and the computer terminal (3) to stabilize the measurement system for about 10 minutes;
step 2: calibration: placing the calibration ball on the measurement component (1), and clicking a zero clearing button of the operation software to finish roundness calibration;
and step 3: measurement: and (4) after the calibration ball is taken out, putting the plunger part to be measured, clicking a measuring button of the operation software to finish measurement, and displaying the roundness value on a display of the computer terminal (3).
9. The method for rapidly detecting the roundness of the spherical surface of the plunger according to claim 8, which is used for the device for rapidly detecting the roundness of the spherical surface of the plunger according to any one of claims 2 to 7, wherein in the step 2, a calibration ball is placed in a spherical positioning portion of a groove (12a) on a positioning seat (12) included in the measuring assembly (1); in the step 3, the plunger part to be measured is placed in the groove (12 a).
10. The method for rapidly detecting the roundness of the spherical surface of the plunger according to claim 8, which is used for the apparatus for rapidly detecting the roundness of the spherical surface of the plunger according to any one of claims 3 to 4 and 7, wherein in the step 2, the method further comprises the steps of pressing the calibration ball by using the rotating pressing block (153), and pressing and positioning the calibration ball by rotating the pressing block (153); and the step 3 also comprises the step of pressing the spherical surface part of the plunger part to be detected by rotating the pressing block (153), and pressing and positioning the plunger part to be detected by rotating the pressing block (153).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010937782.7A CN112033337A (en) | 2020-09-04 | 2020-09-04 | Quick detection device of plunger sphere circularity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010937782.7A CN112033337A (en) | 2020-09-04 | 2020-09-04 | Quick detection device of plunger sphere circularity |
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| CN112033337A true CN112033337A (en) | 2020-12-04 |
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| CN202010937782.7A Pending CN112033337A (en) | 2020-09-04 | 2020-09-04 | Quick detection device of plunger sphere circularity |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4385447A (en) * | 1981-05-29 | 1983-05-31 | Bennett Charles J | Golf ball sphericity gauge |
| JPH11108602A (en) * | 1997-09-30 | 1999-04-23 | Toshiba Corp | Out-of-roundness measuring instrument |
| CN205561811U (en) * | 2016-04-11 | 2016-09-07 | 西安赛特思迈钛业有限公司 | Rod roundness detection device |
| CN107036551A (en) * | 2017-03-15 | 2017-08-11 | 浙江工业大学 | A kind of clamping method of microspheres circularity non-cpntact measurement |
| CN107167106A (en) * | 2017-07-10 | 2017-09-15 | 北京理工大学 | Sebific duct based on minimum two-multiply law withholds performance rating method and detection means |
| CN107218879A (en) * | 2017-07-20 | 2017-09-29 | 合肥工业大学 | The method that Nano Coordinate Measuring Machine microballoon probe sphericity high-acruracy survey can be achieved |
| CN110081835A (en) * | 2019-06-10 | 2019-08-02 | 中国计量大学 | Excavator hydraulic conical plunger contouring error measuring device and method |
-
2020
- 2020-09-04 CN CN202010937782.7A patent/CN112033337A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4385447A (en) * | 1981-05-29 | 1983-05-31 | Bennett Charles J | Golf ball sphericity gauge |
| JPH11108602A (en) * | 1997-09-30 | 1999-04-23 | Toshiba Corp | Out-of-roundness measuring instrument |
| CN205561811U (en) * | 2016-04-11 | 2016-09-07 | 西安赛特思迈钛业有限公司 | Rod roundness detection device |
| CN107036551A (en) * | 2017-03-15 | 2017-08-11 | 浙江工业大学 | A kind of clamping method of microspheres circularity non-cpntact measurement |
| CN107167106A (en) * | 2017-07-10 | 2017-09-15 | 北京理工大学 | Sebific duct based on minimum two-multiply law withholds performance rating method and detection means |
| CN107218879A (en) * | 2017-07-20 | 2017-09-29 | 合肥工业大学 | The method that Nano Coordinate Measuring Machine microballoon probe sphericity high-acruracy survey can be achieved |
| CN110081835A (en) * | 2019-06-10 | 2019-08-02 | 中国计量大学 | Excavator hydraulic conical plunger contouring error measuring device and method |
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Application publication date: 20201204 |