CN105423840A - Testing fixture for detecting depth of spark plug - Google Patents

Testing fixture for detecting depth of spark plug Download PDF

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Publication number
CN105423840A
CN105423840A CN201510816658.4A CN201510816658A CN105423840A CN 105423840 A CN105423840 A CN 105423840A CN 201510816658 A CN201510816658 A CN 201510816658A CN 105423840 A CN105423840 A CN 105423840A
Authority
CN
China
Prior art keywords
depth
upper limit
spark
spark plug
reference plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510816658.4A
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Chinese (zh)
Inventor
曹国亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Yu Kee Haamsing Machinery Manufacturing Co Ltd
Original Assignee
Chongqing Yu Kee Haamsing Machinery Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Yu Kee Haamsing Machinery Manufacturing Co Ltd filed Critical Chongqing Yu Kee Haamsing Machinery Manufacturing Co Ltd
Priority to CN201510816658.4A priority Critical patent/CN105423840A/en
Publication of CN105423840A publication Critical patent/CN105423840A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means
    • G01B5/003Measuring of motor parts
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means
    • G01B5/18Measuring arrangements characterised by the use of mechanical means for measuring depth

Abstract

The invention discloses a testing fixture for detecting the depth of a spark plug. The testing fixture comprises a measuring rod. The outer end surface of the measuring rod is formed by a lower limit depth reference plane and an upper limit depth reference plane; a distance between the lower limit depth reference plane and the bottom of the measuring rod and a distance between the upper limit depth reference plane and the bottom of the measuring rod are equal to a minimum value of the spark plug processing depth and a maximum value of the spark plug processing depth respectively; and a height difference between the lower limit depth reference plane and the upper limit depth reference plane is a tolerance value of a to-be-tested spark plug hole. The lower limit depth reference plane, the upper limit depth reference plane, and the outer end surface of the to-be-tested spark plug hole are parallel to each other. During detection, the upper end surface of the measuring rod is touched by one hand; during touching, if the lower limit depth reference plane or the upper limit depth reference plane of the measuring rod and the outer end surface of the spark plug hole are located on the same plane or the outer end surface of the spark plug hole is higher than the lower limit depth reference plane and is lower than the upper limit depth reference plane, the depth of the spark plug hole meets the standard. According to the testing fixture, whether the depth meets the standard is detected by means of touching, so that the detection efficiency is high; and no wrong judgment is caused.

Description

For detecting the cubing of the spark plug degree of depth
Technical field
The present invention relates to a kind of cubing, especially for the cubing detecting the spark plug degree of depth.
Background technology
The spark-plug hole degree of depth refers to the degree of depth of threaded hole end face to bottom surface of spark plug, the spark-plug hole degree of depth is the significant dimensions parameter of engine cylinder cover processing, directly have influence on the usability of engine, in order to ensure product percent of pass, engine cylinder-body cylinder cap production line needs the cubing being equipped with the spark-plug hole degree of depth.
At present, the detection mode of the degree of depth uses vernier depth gauge or high-precision three-dimensional detector.But, vernier depth gauge can not judge that whether product depth is qualified intuitively, but needs reading word to determine whether in claimed range, but this metering system, not only require that workman will use degree of depth vernier calliper and reading, but also need workman's carefulness not misread numeral.Three-dimensional detector is expensive simultaneously, and detects the needs longer time.
Summary of the invention
Judge only by eye-observation after the cubing that the object of the invention is to solve existing measurement spark plug detects, judgment mode is not good, simultaneously, the problem of the measured spark-plug hole degree of depth whether in margin tolerance can not be measured, and a kind of cubing for detecting the spark plug degree of depth provided.
To achieve these goals, the cubing for detecting the spark plug degree of depth designed by the present invention, it comprises gauge rod, the outer face of described gauge rod is made up of a minimum air velocity reference field and upper limit depth datum, described minimum air velocity reference field, upper limit depth datum are respectively minimum value and the maximal value of spark plug working depth to the distance of gauge rod bottom, difference in height between minimum air velocity reference field and upper limit depth datum is the tolerance value of spark-plug hole to be measured, and minimum air velocity reference field, upper limit depth datum, spark-plug hole outer face to be measured are parallel to each other; During detection, by gauge rod being inserted in spark-plug hole to be measured, then the outer face of gauge rod is touched with hand, during touch, if gauge rod minimum air velocity reference field or upper limit depth datum and measured spark-plug hole outer face are in same plane, or during higher than minimum air velocity reference field and lower than upper limit depth datum, the degree of depth of spark-plug hole and qualified.
Further, in order to contact completely with the bottom surface of piston hole, the lower end of described gauge rod is spherical in shape.
Further, be provided with a vertical groove in gauge rod upper end, between minimum air velocity reference field and upper limit depth datum, minimum air velocity reference field and upper limit depth datum can separate by this groove, when touching, more easily judge.
Compared with prior art, the present invention obtain for detecting the cubing of the spark plug degree of depth by arranging one high and one low reference field in gauge rod outer face, and judging that the degree of depth of spark-plug hole is whether in the size limited by touching reference field and measured spark-plug hole outer face with hand, the mode of this touch judgement is more accurate.Meanwhile, by arranging two reference fields, one is the reference field of spark plug maximum depth value, and another is the reference field of spark plug minimum depth value, and namely judge the measured spark-plug hole degree of depth whether in this interval value by touching, precision is higher.
Accompanying drawing explanation
Fig. 1 inserts view when detecting in spark-plug hole for the cubing detecting the spark plug degree of depth in embodiment.
In figure: gauge rod 1, minimum air velocity reference field 11, upper limit depth datum 12, groove 13, spark-plug hole 21.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment:
The cubing for detecting the spark plug degree of depth that the present embodiment provides, as shown in the figure, it comprises gauge rod 1, the outer face of described gauge rod 1 is made up of a minimum air velocity reference field 11 and upper limit depth datum 12, described minimum air velocity reference field 11, upper limit depth datum 12 is respectively minimum value and the maximal value of spark plug working depth to the distance of gauge rod 1 bottom, difference in height between minimum air velocity reference field 11 and upper limit depth datum 12 is the tolerance value of the spark-plug hole degree of depth to be measured, minimum air velocity reference field 11, upper limit depth datum 12, spark-plug hole outer face to be measured is parallel to each other, during detection, by gauge rod 1 being inserted in spark-plug hole 21 to be measured, then the outer face of gauge rod 1 is touched with hand, during touch, if gauge rod 1 minimum air velocity reference field 11 or upper limit depth datum 12 are in same plane with the outer face 22 of measured spark-plug hole 21, or during higher than minimum air velocity reference field 11 and lower than upper limit depth datum 12, the degree of depth of spark-plug hole 21 and qualified.
In the present embodiment, described gauge rod 1 is cylindrical, and in order to contact completely with the bottom surface of piston hole, the lower end of described gauge rod 1 is spherical in shape.
As optimization, in gauge rod 1 upper end, be provided with a vertical groove 13 between minimum air velocity reference field 11 and upper limit depth datum 12, minimum air velocity reference field and upper limit depth datum can separate by this groove 13, when touching, more easily judge.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention but not restriction technologies scheme, although applicant's reference preferred embodiment is to invention has been detailed description, those of ordinary skill in the art is to be understood that, those are modified to technical scheme of the present invention or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present invention.

Claims (3)

1. one kind for detecting the cubing of the spark plug degree of depth, it is characterized in that, it comprises gauge rod, the outer face of described gauge rod is made up of a minimum air velocity reference field and upper limit depth datum, described minimum air velocity reference field, upper limit depth datum are respectively minimum value and the maximal value of spark plug working depth to the distance of gauge rod bottom, difference in height between minimum air velocity reference field and upper limit depth datum is the tolerance value of the spark-plug hole degree of depth to be measured, and minimum air velocity reference field, upper limit depth datum, spark-plug hole outer face to be measured are parallel to each other; During detection, by gauge rod being inserted in spark-plug hole to be measured, then the outer face of gauge rod is touched with hand, during touch, if gauge rod minimum air velocity reference field or upper limit depth datum and measured spark-plug hole outer face are in same plane, or during higher than minimum air velocity reference field and lower than upper limit depth datum, the degree of depth of spark-plug hole and qualified.
2. the cubing for detecting the spark plug degree of depth according to claim 1, is characterized in that, the lower end of described gauge rod is spherical in shape.
3. the cubing for detecting the spark plug degree of depth according to claim 1, is characterized in that, is provided with a vertical groove in gauge rod upper end, between minimum air velocity reference field and upper limit depth datum.
CN201510816658.4A 2015-11-23 2015-11-23 Testing fixture for detecting depth of spark plug Pending CN105423840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510816658.4A CN105423840A (en) 2015-11-23 2015-11-23 Testing fixture for detecting depth of spark plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510816658.4A CN105423840A (en) 2015-11-23 2015-11-23 Testing fixture for detecting depth of spark plug

Publications (1)

Publication Number Publication Date
CN105423840A true CN105423840A (en) 2016-03-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510816658.4A Pending CN105423840A (en) 2015-11-23 2015-11-23 Testing fixture for detecting depth of spark plug

Country Status (1)

Country Link
CN (1) CN105423840A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107228612A (en) * 2017-07-06 2017-10-03 南京康尼精密机械有限公司 A kind of workpiece hole depth cubing
CN109341479A (en) * 2018-11-20 2019-02-15 中国航发贵州黎阳航空动力有限公司 A kind of annular groove step for nozzle body parts measurement refers to that mould is advised
CN111795634A (en) * 2020-07-06 2020-10-20 东风汽车车轮随州有限公司 Device and method for detecting size of opening of taper hole of wheel nut seat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH86749A (en) * 1919-11-06 1920-12-16 A Kohly Depth gauge.
GB2360590A (en) * 2000-03-21 2001-09-26 Bespak Plc A method of calibrating a crimp measuring gauge and a standardised body for use in such method
US20110166824A1 (en) * 2009-11-10 2011-07-07 Projection Works, Inc. Hole Measurement Apparatuses
CN102679847A (en) * 2011-03-08 2012-09-19 新兴重工湖北三六一一机械有限公司 Inner hole chamfer depth gauge
CN202648597U (en) * 2012-04-27 2013-01-02 东风(十堰)楚凯汽车零件有限公司 Coupling sleeve step surface to stepped hole surface depth measuring gauge
CN203011313U (en) * 2012-11-30 2013-06-19 常州南车汽车零部件有限公司 Gauge for measuring depth of holes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH86749A (en) * 1919-11-06 1920-12-16 A Kohly Depth gauge.
GB2360590A (en) * 2000-03-21 2001-09-26 Bespak Plc A method of calibrating a crimp measuring gauge and a standardised body for use in such method
US20110166824A1 (en) * 2009-11-10 2011-07-07 Projection Works, Inc. Hole Measurement Apparatuses
CN102679847A (en) * 2011-03-08 2012-09-19 新兴重工湖北三六一一机械有限公司 Inner hole chamfer depth gauge
CN202648597U (en) * 2012-04-27 2013-01-02 东风(十堰)楚凯汽车零件有限公司 Coupling sleeve step surface to stepped hole surface depth measuring gauge
CN203011313U (en) * 2012-11-30 2013-06-19 常州南车汽车零部件有限公司 Gauge for measuring depth of holes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
伍岳林等: "《发动机及关键零部件制造技术》", 1 January 2015, 机械工业出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107228612A (en) * 2017-07-06 2017-10-03 南京康尼精密机械有限公司 A kind of workpiece hole depth cubing
CN109341479A (en) * 2018-11-20 2019-02-15 中国航发贵州黎阳航空动力有限公司 A kind of annular groove step for nozzle body parts measurement refers to that mould is advised
CN111795634A (en) * 2020-07-06 2020-10-20 东风汽车车轮随州有限公司 Device and method for detecting size of opening of taper hole of wheel nut seat

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Application publication date: 20160323