CN107044815B - Special gauge for size and position degree of spigot of engine bearing cover and detection method - Google Patents
Special gauge for size and position degree of spigot of engine bearing cover and detection method Download PDFInfo
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- CN107044815B CN107044815B CN201710066465.0A CN201710066465A CN107044815B CN 107044815 B CN107044815 B CN 107044815B CN 201710066465 A CN201710066465 A CN 201710066465A CN 107044815 B CN107044815 B CN 107044815B
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- engine bearing
- bearing cover
- pneumatic measuring
- spigot
- detecting
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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
- G01B5/003—Measuring of motor parts
-
- 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
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- 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
- G01B5/241—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for measuring conicity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention discloses a special gauge for the size and the position degree of an engine bearing cap spigot, which comprises a gauge mounting plate, an engine bearing cap fixing piece, two pneumatic measuring plates, two guide rods and a pneumatic measuring instrument, wherein the two pneumatic measuring plates are respectively communicated with the pneumatic measuring instrument; the engine bearing cover fixing piece and the pneumatic measuring plates are respectively connected to the detecting tool mounting plate, the engine bearing cover fixing piece is positioned in the middle of the detecting tool mounting plate, the two pneumatic measuring plates are symmetrically positioned outside the engine bearing cover fixing piece, and each guide rod is respectively positioned between each pneumatic measuring plate and the engine bearing cover fixing piece. Compared with the prior art, the invention can realize rapid and accurate detection on the size of the spigot and the position of the relative screw hole.
Description
Technical Field
The invention relates to a special gauge for the size and the position degree of a spigot of an engine bearing cover and a detection method.
Background
The positioning mode of the main bearing cap of the current engine cylinder body mainly comprises spigot positioning and pin hole positioning (which account for more than 95% of the positioning mode of the tile cap), the precision of spigot length and the aperture of the pin hole is relatively high, and the pin hole can be measured by a plug gauge and a pneumatic measuring instrument at present; the current detection mode of the spigot length mainly comprises the following steps: (1) and detecting by an outside micrometer. The outside micrometer is most widely used, and because the micrometer has higher requirements on operation skills when detecting large sizes, the relationship between the measurement size and the operation method of staff is very large, and the measurement sizes of different staff are different. Therefore, the micrometer for measuring the spigot of the tile cover has higher requirements on staff skills and low measurement efficiency, and a plurality of operators are required to be configured and long-term training is required to meet the detection requirements during mass processing; and the micrometer belongs to contact measurement, dust and burr have a large influence on the detection size, and a measurement surface needs to be cleaned continuously, so that the accuracy and the detection efficiency are further reduced. (2) Detecting by a sensor probe; the sensor measuring instrument is mainly used for powder metallurgy main bearing cap manufacturers, and also belongs to contact measurement, and dust and burrs have a large influence on a measurement result. And electronic instruments are greatly affected by the environment, are usually used in dust-free workshops and are clamped by mechanical arms. And is not suitable for a large-scale processing workshop of the cast iron main bearing cap. (3) Detecting a traditional pneumatic length measuring instrument; the traditional pneumatic measuring instrument belongs to non-contact measurement, the tile cover is required to be manually aligned and pushed into a detection area slowly, the requirement on the operation proficiency of personnel is also high, and the work piece is easy to be blocked due to unskilled operation, so that the detection efficiency is reduced.
Disclosure of Invention
In order to solve the problems of detection efficiency and accuracy of mass processing of the main bearing caps and reduce the skill level requirements on detection personnel, one of the purposes of the invention is to provide a comprehensive detection tool for rapidly and accurately detecting the sizes of the main bearing cap seam allowance and the relative screw hole positions of an engine.
The technical proposal is as follows: the special gauge comprises a gauge mounting plate, an engine bearing cover fixing piece, two pneumatic measuring plates, two guide rods and a pneumatic measuring instrument, wherein the two pneumatic measuring plates are respectively communicated with the pneumatic measuring instrument; the engine bearing cover fixing piece and the pneumatic measuring plates are respectively connected to the detecting tool mounting plate, the engine bearing cover fixing piece is positioned in the middle of the detecting tool mounting plate, the two pneumatic measuring plates are symmetrically positioned outside the engine bearing cover fixing piece, and each guide rod is respectively positioned between each pneumatic measuring plate and the engine bearing cover fixing piece; the center distance of the two guide rods is equal to the center distance of the two bolt holes of the engine bearing cover, the diameter of the guide rods is equal to the diameter of the bolt holes of the engine bearing cover minus the position tolerance of the bolt holes, the distance between the inner surfaces of the two pneumatic measuring plates is the distance between the two spigot surfaces of the engine bearing cover plus a certain gap amount, and the distance between the center of each guide rod and the adjacent pneumatic measuring plate is equal to the distance between the bolt holes of the engine bearing cover and the adjacent spigot surfaces.
Preferably, the special gauge is further provided with two guide rod fixing pieces, the two guide rod fixing pieces are installed on the gauge mounting plate, the two guide rods are respectively installed on the two guide rods, and the upper surfaces of the two guide rod fixing pieces are lower than the upper surface of the engine bearing cover fixing piece.
Preferably, the special gauge is further provided with a base.
Preferably, the pneumatic measuring instrument is a double-tube buoy type pneumatic measuring instrument.
Preferably, each pneumatic measuring plate is provided with two vent holes.
Preferably, the gauge mounting plate is provided with a mounting plate air passage communicated with the vent hole, and the base is provided with a base air passage communicated with the mounting plate air passage.
The second purpose of the invention is to provide a method for detecting the size and the position degree of the spigot of the engine bearing cap.
The technical proposal is as follows: the method for detecting the size and the position degree of the spigot of the engine bearing cover adopts the special gauge, and comprises the following steps:
(1) calibrating; the method comprises the steps that an engine bearing cover standard part with an upper limit tolerance and an engine bearing cover standard part with a lower limit tolerance are respectively taken for calibrating a pneumatic measuring instrument, two bolt holes of the engine bearing cover are respectively inserted into guide rods and then pushed downwards to the bottom during calibrating, a buoy is stopped at one position when the engine bearing cover standard part with the upper limit tolerance of the pneumatic measuring instrument is detected, the position is used as a marking A, and the buoy is stopped at the other position when the engine bearing cover standard part with the lower limit tolerance is detected, and the marking B is used;
(2) detecting and judging whether the product is qualified or not; respectively inserting two bolt holes of a tested engine bearing cover into the guide rods and then pushing the two bolt holes to the bottom; if the two bolt holes cannot be inserted into the guide rods or can be inserted into but cannot be pushed down to the bottom, the two bolt holes are all unqualified products; if the buoy can be inserted and pushed downwards to the bottom, observing the buoy of the pneumatic measuring instrument, if the buoy stays between the marked line A and the marked line B, the buoy is a qualified product, otherwise, the buoy is a unqualified product;
(3) and detecting the next engine bearing cover to be detected.
The invention has the beneficial effects that:
according to the invention, the pneumatic measuring instrument for measuring the length of the spigot and the spigot position degree detection tool are integrated, so that the simultaneous detection is realized, the pneumatic measuring head is provided with two nozzles, the length dimension and the taper of the spigot are detected simultaneously, the measuring rod for measuring the position degree can be used as a guide rod of a workpiece, and the workpiece can be quickly assembled into the pneumatic measuring head for detection. The invention can rapidly realize the accurate detection of the size and the position degree of the spigot of the main bearing cap (average 2.3 seconds/piece, and 7.5 seconds/piece by adopting micrometer). The invention can measure two points of the spigot at the same time, and does not need to detect the two points respectively, thereby further improving the measurement efficiency. The invention can realize non-contact measurement, avoids the influence of dust and burrs on the detection size, and has the function of automatic cleaning in pneumatic detection without cleaning the measurement surface. The invention can lighten the labor intensity of staff, reduce the requirement on the skill level of staff and save detection staff. The invention has high detection precision and good stability, and is suitable for mass detection.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the pneumatic measuring plate structure of the present invention;
FIG. 3 is a schematic view of the structure of the mounting plate of the gauge of the present invention;
FIG. 4 is a schematic view of the base structure of the present invention;
FIG. 5 is a schematic front view of a part under test according to the present invention;
FIG. 6 is a schematic diagram of a right side view of a part under test according to the present invention;
fig. 7 is a schematic bottom view of a part under test according to the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Example 1
In the tested part engine bearing cover 9 in fig. 5-7, the side surface consists of an upper side surface 10 and a spigot surface 7, the upper side surface 10 and the spigot surface 7 are not on the same plane, and the distance between the two spigot surfaces 7 is larger than the distance between the two side surfaces. The bolt hole 8 is a through hole.
1-4, a special gauge for the size and the position degree of an engine bearing cap spigot comprises a gauge mounting plate 4, an engine bearing cap fixing piece 3, a pneumatic measuring plate 2, a guide rod 1, a guide rod fixing piece 6 and a pneumatic measuring instrument 11. The pneumatic measuring plate 2 is communicated with a pneumatic measuring instrument 11. The number of the guide rods 1 is two, and the number of the guide rod fixing pieces 6 and the number of the pneumatic measuring plates 2 are two. The guide bar 1 is connected to a guide bar holder 6.
The center distance of the two guide rods 1 is equal to the center distance of the two bolt holes of the engine bearing cover. The diameter of the guide rod 1 is equal to the diameter of the bolt hole of the engine bearing cover minus the position tolerance of the bolt hole. The distance between the inner surfaces of the two pneumatic measuring plates 2 is the distance between the two spigot surfaces of the engine bearing cover plus a certain clearance amount, and the distance between the center of each guide rod 1 and the adjacent pneumatic measuring plate 2 is equal to the distance between the bolt hole 8 of the engine bearing cover and the adjacent spigot surface 7.
The engine bearing cap fixing piece 3, the guide rod fixing piece 6 and the pneumatic measuring plates 2 are respectively connected to the gauge mounting plate 4, the engine bearing cap fixing piece 3 is positioned in the middle of the gauge mounting plate 4, the two pneumatic measuring plates 2 are symmetrically positioned outside the engine bearing cap fixing piece 3, and one guide rod fixing piece 6 is respectively arranged between each pneumatic measuring plate 2 and each engine bearing cap fixing piece 3.
The guide rod 1 is used for smoothly pouring the measured piece. The upper surface of the guide rod fixing piece 6 is lower than the upper surface of the engine bearing cover fixing piece 3.
The pneumatic measuring instrument 11 is a double-tube buoy type pneumatic measuring instrument 11, two vent holes 12 are formed in each pneumatic measuring plate 2, a nozzle is arranged in each vent hole 12, two points of a spigot can be detected simultaneously, hard alloy is adopted in a measuring part, abrasion of a measuring tool is reduced, and the measuring service life is prolonged.
The engine bearing cover fixing piece 3 is a sizing block and is made of alloy steel and subjected to quenching treatment and used for positioning the bottom surface of a tested piece, so that the abrasion of the testing tool is reduced, and the service life is prolonged.
The gauge mounting plate 4 is used for mounting and precisely combining the gauge components.
The special gauge for the size and the position degree of the spigot of the engine bearing cover is further provided with a base 5, and a gauge mounting plate 4 is mounted on the base 5.
For the purpose of attractive appearance, a mounting plate air passage 13 communicated with the vent hole 12 is arranged on the gauge mounting plate 4, a base air passage 14 communicated with the mounting plate air passage 13 is arranged on the base 5, and an air pipe of the pneumatic measuring instrument 11 is connected with the base air passage 14 of the base 5.
During batch production testing, the testing steps are as follows:
(1) and (5) calibrating. And respectively taking the engine bearing cap standard parts with the upper limit tolerance and the lower limit tolerance to check the pneumatic measuring instrument 11, respectively inserting the two bolt holes 8 of the engine bearing cap into the guide rods 1 and pushing the guide rods to the bottom downwards during checking, wherein the buoy of the pneumatic measuring instrument 11 stays at one position during checking the engine bearing cap standard parts with the upper limit tolerance, the position is used as a marking A, and the buoy stays at the other position during checking the engine bearing cap standard parts with the lower limit tolerance, and the marking B is used.
(2) And detecting and judging whether the product is qualified or not. Two bolt holes 8 of the tested engine bearing cover are respectively inserted into the guide rods 1 and then pushed down to the bottom.
If the two bolt holes 8 cannot be inserted into the guide bar 1 or can be inserted but cannot be pushed down to the bottom, they are all defective (defective in position);
if it can be inserted and pushed down to the bottom, the float of the pneumatic gauge 11 is observed, and if it stays between the gauge line a and the gauge line B, it is a good product, otherwise it is a bad product (the size of the spigot is bad).
(3) And detecting the next engine bearing cover to be detected.
The invention adopts the maximum physical method and the pneumatic measurement method for detection, has high detection speed and accuracy, and is not influenced by artificial subjective factors.
Claims (6)
1. The method for detecting the size and the position degree of the spigot of the engine bearing cover adopts a special detecting tool for detecting the size and the position degree of the spigot of the engine bearing cover, and comprises the following steps:
(1) calibrating; the method comprises the steps that an engine bearing cover standard part with an upper limit tolerance and an engine bearing cover standard part with a lower limit tolerance are respectively taken for calibrating a pneumatic measuring instrument, two bolt holes of the engine bearing cover are respectively inserted into guide rods and then pushed downwards to the bottom during calibrating, a buoy is stopped at one position when the engine bearing cover standard part with the upper limit tolerance of the pneumatic measuring instrument is detected, the position is used as a marking A, and the buoy is stopped at the other position when the engine bearing cover standard part with the lower limit tolerance is detected, and the marking B is used;
(2) detecting and judging whether the product is qualified or not; respectively inserting two bolt holes of a tested engine bearing cover into the guide rods and then pushing the two bolt holes to the bottom; if the two bolt holes cannot be inserted into the guide rods or can be inserted into but cannot be pushed down to the bottom, the two bolt holes are all unqualified products; if the buoy can be inserted and pushed downwards to the bottom, observing the buoy of the pneumatic measuring instrument, if the buoy stays between the marked line A and the marked line B, the buoy is a qualified product, otherwise, the buoy is a unqualified product;
(3) detecting the next engine bearing cover to be detected;
the special gauge comprises a gauge mounting plate, an engine bearing cover fixing piece, two pneumatic measuring plates, two guide rods and a pneumatic measuring instrument, wherein the two pneumatic measuring plates are respectively communicated with the pneumatic measuring instrument; the engine bearing cover fixing piece and the pneumatic measuring plates are respectively connected to the detecting tool mounting plate, the engine bearing cover fixing piece is positioned in the middle of the detecting tool mounting plate, the two pneumatic measuring plates are symmetrically positioned outside the engine bearing cover fixing piece, and each guide rod is respectively positioned between each pneumatic measuring plate and the engine bearing cover fixing piece; the center distance of the two guide rods is equal to the center distance of the two bolt holes of the engine bearing cover, the diameter of the guide rods is equal to the diameter of the bolt holes of the engine bearing cover minus the position tolerance of the bolt holes, the distance between the inner surfaces of the two pneumatic measuring plates is the distance between the two spigot surfaces of the engine bearing cover plus a certain gap amount, and the distance between the center of each guide rod and the adjacent pneumatic measuring plate is equal to the distance between the bolt holes of the engine bearing cover and the adjacent spigot surfaces.
2. The method for detecting the size and the position degree of the spigot of the engine bearing cap according to claim 1, wherein the method comprises the following steps: the special gauge is characterized in that two guide rod fixing pieces are further arranged, the two guide rod fixing pieces are arranged on the gauge mounting plate, the two guide rods are respectively arranged on the two guide rods, and the upper surfaces of the two guide rod fixing pieces are lower than the upper surface of the engine bearing cover fixing piece.
3. The method for detecting the size and the position degree of the spigot of the engine bearing cap according to any one of claims 1 and 2, characterized by comprising the steps of: the special gauge is also provided with a base.
4. The method for detecting the size and the position degree of the spigot of the engine bearing cap according to claim 3, wherein the method comprises the following steps: the pneumatic measuring instrument is a double-tube buoy type pneumatic measuring instrument.
5. The method for detecting the size and the position degree of the spigot of the engine bearing cap according to claim 4, wherein the method comprises the following steps: each pneumatic measuring plate is provided with two vent holes.
6. The method for detecting the size and the position degree of the spigot of the engine bearing cap according to claim 5, wherein the method comprises the following steps: the detection tool mounting plate is provided with a mounting plate air passage communicated with the vent hole, and the base is provided with a base air passage communicated with the mounting plate air passage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066465.0A CN107044815B (en) | 2017-02-07 | 2017-02-07 | Special gauge for size and position degree of spigot of engine bearing cover and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710066465.0A CN107044815B (en) | 2017-02-07 | 2017-02-07 | Special gauge for size and position degree of spigot of engine bearing cover and detection method |
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| CN107044815A CN107044815A (en) | 2017-08-15 |
| CN107044815B true CN107044815B (en) | 2023-07-14 |
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| CN111397557B (en) * | 2020-06-02 | 2020-08-25 | 南京泰普森自动化设备有限公司 | Position degree measuring device and position degree measuring method |
| CN113446969A (en) * | 2021-09-01 | 2021-09-28 | 山东铭弘新能源科技有限公司 | Bearing cap automatic line on-line measuring system |
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| CN105627870A (en) * | 2015-12-31 | 2016-06-01 | 广西玉林市朗泰汽车零部件有限公司 | Readable testing fixture for location degree of semicircle orifice of bearing cover |
| CN205294254U (en) * | 2016-01-11 | 2016-06-08 | 成都佰富隆精工机械有限公司 | Monomer bearing cap conveyor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2136631C2 (en) * | 1971-07-22 | 1983-11-24 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | Multi-cylinder reciprocating internal combustion engine with suspended crankshaft bearings |
| CN2519235Y (en) * | 2002-01-10 | 2002-10-30 | 无锡纽思达科技有限公司 | Bearing internal diameter automatic measuring apparatus |
| JP4905199B2 (en) * | 2007-03-19 | 2012-03-28 | いすゞ自動車株式会社 | Measuring method and measuring device for cylinder bore |
| CN104374285A (en) * | 2014-08-01 | 2015-02-25 | 安徽天利动力股份有限公司 | Device special for detecting depth of stopping seam of mainshaft cap |
| CN205779043U (en) * | 2016-05-25 | 2016-12-07 | 兖州煤业股份有限公司 | A kind of big-and-middle-sized Steam Turbine axle shakes measurement apparatus |
| CN206573031U (en) * | 2017-02-07 | 2017-10-20 | 成都三信动力部件有限公司 | Engine bearing lid seam size, position degree special gauge |
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2017
- 2017-02-07 CN CN201710066465.0A patent/CN107044815B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627870A (en) * | 2015-12-31 | 2016-06-01 | 广西玉林市朗泰汽车零部件有限公司 | Readable testing fixture for location degree of semicircle orifice of bearing cover |
| CN205294254U (en) * | 2016-01-11 | 2016-06-08 | 成都佰富隆精工机械有限公司 | Monomer bearing cap conveyor |
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