CN102878901A - Device for measuring wall thickness difference of piston pin - Google Patents
Device for measuring wall thickness difference of piston pin Download PDFInfo
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- CN102878901A CN102878901A CN2012103597551A CN201210359755A CN102878901A CN 102878901 A CN102878901 A CN 102878901A CN 2012103597551 A CN2012103597551 A CN 2012103597551A CN 201210359755 A CN201210359755 A CN 201210359755A CN 102878901 A CN102878901 A CN 102878901A
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- piston pin
- pillar
- thickness difference
- locator mandrel
- measurement mechanism
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a device for measuring a wall thickness difference of a piston pin. The device comprises a support, a first strut, a gauge frame, a dial indicator and a positioning mandrel, wherein one end of the first strut is fixed to the support; a mounting hole is formed in the first strut; one end of the positioning mandrel is arranged in the mounting hole; the gauge frame is fixed on the first strut and is positioned above the positioning mandrel; and the dial indicator is fixed on the gauge frame. The device can quickly detect the wall thickness difference of the piston pin.
Description
Technical field
The present invention relates to field of measuring technique, be specifically related to a kind of measurement mechanism of piston pin Wall-Thickness Difference.
Background technology
Piston is motor car engine " heart ", bears mechanical load and the thermal load of alternation, is one of worst key components and parts of condition of work in the engine.The function of piston is to bear gaseous tension, and passes to connecting rod by piston pin and order about crankshaft rotating, top land or the ingredient of firing chamber.Piston at high temperature, high pressure, at a high speed, work under the condition of insufficient lubrication, piston directly contacts with high-temperature gas, transient temperature can reach more than the 2500K, therefore, be heated serious, and radiating condition is very poor, so temperature is very high during pistons work, the top is up to 600-700K, and Temperature Distribution is very inhomogeneous; It is very large that top land bears gaseous tension, and particularly working stroke pressure is maximum, and gasoline engine is up to 3-5MPa, and diesel engine is up to 6-9MPa, and this is just so that piston produces impacts, and bear the effect of wall pressure; (8-12m/s) to-and-fro movements, and speed changes constantly, this has just produced very large inertial force to piston, makes piston be subject to very large additional load with very high speed in cylinder.Piston is worked under this abominable condition, can produce distortion and accelerated wear test, also can produce additional load and thermal stress, is subject to simultaneously the chemical corrosion effect of combustion gas.
As can be seen from the above, piston pin is stressed very large part in the internal combustion engine, and is the effect that is subjected to alternating force, for guaranteeing it enough intensity and life-span is arranged, and except piston pin has certain wall thickness, also should guarantee the homogeneity of its wall thickness, and namely Wall-Thickness Difference is little.Practice shows, the principal element that affects Wall-Thickness Difference is the coaxiality error of the inside and outside circle of piston pin, and therefore, it is a necessary procedure that the Wall-Thickness Difference of the piston pin in the process is detected.
Summary of the invention
For above-mentioned technical matters, the purpose of this invention is to provide a kind of measurement mechanism of piston pin Wall-Thickness Difference, the present invention can detect the piston pin Wall-Thickness Difference rapidly.
The technical scheme that realizes above-mentioned purpose is as follows:
The measurement mechanism of piston pin Wall-Thickness Difference, comprise bearing, the first pillar, dial framework, dial gauge, locator mandrel, one end of the first pillar is fixed on the bearing, the first pillar is provided with mounting hole, one end of locator mandrel is assemblied in this mounting hole, dial framework is fixed on the first pillar, and dial framework is positioned at the top of locator mandrel, and dial gauge is fixed on the dial framework.
Adopted such scheme, during detection, tested piston pin has been enclosed within on the locator mandrel, the operation dial gauge makes and the gauge head contact piston pin of submeter and decrement is arranged, transfer lark to divide list index to after zero, with hand rotating piston one week of pin, the variation range of dial gauge pointer is exactly the Wall-Thickness Difference of piston pin.Adopt the present invention to measure the Wall-Thickness Difference of piston pin rapidly, and simple to operate.
The compartment of terrain arranges dismountable axle sleeve on the described locator mandrel.For the different piston guide in aperture, during test, only need to change axle sleeve, carry out gapless by axle sleeve and locator mandrel and cooperate.
Be provided with the second pillar at bearing, top being connected on the second pillar, top center and the center of locator mandrel are on same straight line.Reach by the top other end to locator mandrel and to lean on, make the two ends of locator mandrel all obtain simultaneously coordination, the bearing accuracy of locator mandrel is improved, be beneficial to the raising accuracy of detection.
Toply be threaded with the second pillar, top end is provided with rotating disk, by the operation rotating disk, be convenient to make top on the second pillar along continuous straight runs move.
Limiting component of threaded engagement on the top side face, because an end of tested piston guide is spacing by locator mandrel, can carry out spacing to the other end of tested piston guide by limiting component, prevent that being enclosed within rotation at piston pin moves along its axis, and guarantees that the position of measuring is positioned on the same circumference.
Limiting component is provided with stepped hole, by stepped hole is set, can reduce the materials of limiting component, is beneficial to the manufacturing cost of saving measurement mechanism.
Description of drawings
Fig. 1 is structural representation of the present invention;
In the accompanying drawing, 10 is bearing, and 11 is the first pillar, and 12 is dial framework, and 13 is dial gauge, and 14 is locator mandrel, and 14a is axle sleeve, and 15 is the second pillar, and 16 is top, and 17 is rotating disk, and 18 is limiting component;
20 is piston pin.
Embodiment
With reference to Fig. 1, the measurement mechanism of piston pin Wall-Thickness Difference of the present invention comprises bearing 10, the first pillar 11, dial framework 12, dial gauge 13, locator mandrel 14.One end of the first pillar 11 is fixed on the bearing 10, and the first pillar 11 is provided with mounting hole, and an end of locator mandrel 14 is assemblied in this mounting hole.The compartment of terrain arranges dismountable axle sleeve 14a on the locator mandrel 14, axle sleeve 14a is assemblied on the locator mandrel 14 with the form that is threaded, when for the different piston pin 20 in aperture, only need to change axle sleeve 14a, just the piston pin 20 of correspondence can be assemblied on the locator mandrel and measure, the locator mandrel of this structure and the connected mode of axle sleeve in the face of the different piston pin in aperture the time, need not whole locator mandrel to be changed.Dial framework 12 is fixed by screws in the upper end of the first pillar 11, and dial framework 12 is positioned at the top of locator mandrel 14, is parallel to each other with locator mandrel.Dial gauge 13 is fixed on the dial framework, lark submeter 13 by screw fastening on dial framework.Be provided with 15, one top 16 on the second pillar at bearing 10 and be connected on the second pillar, top center and the center of locator mandrel are on same straight line, and a top end that withstands locator mandrel makes the axial line of locator mandrel and the first pillar keep plumbness.Top 16 are threaded with the second pillar 15,, top by rotating like this, top relative positioning axle is carried out directly by flexible.Top 16 end is provided with rotating disk 17, can rotate easily top by rotating disk.Limiting component 18 of threaded engagement on top 16 the side face, limiting component is provided with stepped hole, and the large aperture end of stepped hole is hollow state, on the wall surface of the hole of small-bore end screw thread is set, and is used for and the top threaded engagement of carrying out.
Claims (6)
1. the measurement mechanism of piston pin Wall-Thickness Difference, it is characterized in that: comprise bearing, the first pillar, dial framework, dial gauge, locator mandrel, one end of the first pillar is fixed on the bearing, the first pillar is provided with mounting hole, one end of locator mandrel is assemblied in this mounting hole, dial framework is fixed on the first pillar, and dial framework is positioned at the top of locator mandrel, and dial gauge is fixed on the dial framework.
2. the measurement mechanism of piston pin Wall-Thickness Difference according to claim 1, it is characterized in that: the compartment of terrain arranges dismountable axle sleeve on the described locator mandrel.
3. the measurement mechanism of piston pin Wall-Thickness Difference according to claim 1 and 2 is characterized in that: be provided with the second pillar at bearing, and top being connected on the second pillar, top center and the center of locator mandrel are on same straight line.
4. the measurement mechanism of piston pin Wall-Thickness Difference according to claim 3 is characterized in that: toply be threaded with the second pillar, top end is provided with rotating disk.
5. the measurement mechanism of piston pin Wall-Thickness Difference according to claim 3 is characterized in that: limiting component of threaded engagement on the top side face.
6. the measurement mechanism of piston pin Wall-Thickness Difference according to claim 5, it is characterized in that: limiting component is provided with stepped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103597551A CN102878901A (en) | 2012-09-24 | 2012-09-24 | Device for measuring wall thickness difference of piston pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103597551A CN102878901A (en) | 2012-09-24 | 2012-09-24 | Device for measuring wall thickness difference of piston pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102878901A true CN102878901A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103597551A Pending CN102878901A (en) | 2012-09-24 | 2012-09-24 | Device for measuring wall thickness difference of piston pin |
Country Status (1)
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| CN (1) | CN102878901A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256878A (en) * | 2013-04-17 | 2013-08-21 | 洛阳轴承研究所有限公司 | Simple measuring method for pin type cylindrical roller wall margin |
| CN106524869A (en) * | 2016-12-28 | 2017-03-22 | 无锡透平叶片有限公司 | Detection device for detecting wall thickness of blade tenon threaded hole |
| CN107036504A (en) * | 2017-06-13 | 2017-08-11 | 江南工业集团有限公司 | A kind of wall thickness measuring device and measuring method |
| CN109000552A (en) * | 2018-10-31 | 2018-12-14 | 东莞市新懿电子材料技术有限公司 | It is a kind of for testing the device and method of round sebific duct wall thickness |
| CN115319539A (en) * | 2022-07-28 | 2022-11-11 | 湖南南方通用航空发动机有限公司 | Thickness measuring tool and method for disc with wall thickness having inclined angle on given diameter |
Citations (3)
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| CN101726235A (en) * | 2008-10-31 | 2010-06-09 | 江苏罡阳动力转向器厂 | Detector for detecting TI-5 symmetry of axial groove on shaft surface |
| CN201819657U (en) * | 2010-09-16 | 2011-05-04 | 浙江春晖空调压缩机有限公司 | Detection device for perpendicularity of end surface of piston of compressor |
| CN202836449U (en) * | 2012-09-24 | 2013-03-27 | 常州市双成工具有限公司 | Device for measuring wall thickness difference of piston pin |
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2012
- 2012-09-24 CN CN2012103597551A patent/CN102878901A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN101726235A (en) * | 2008-10-31 | 2010-06-09 | 江苏罡阳动力转向器厂 | Detector for detecting TI-5 symmetry of axial groove on shaft surface |
| CN201819657U (en) * | 2010-09-16 | 2011-05-04 | 浙江春晖空调压缩机有限公司 | Detection device for perpendicularity of end surface of piston of compressor |
| CN202836449U (en) * | 2012-09-24 | 2013-03-27 | 常州市双成工具有限公司 | Device for measuring wall thickness difference of piston pin |
Non-Patent Citations (1)
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| 桂国正 等: "活塞销壁厚差检具", 《内燃机配件》, 31 December 1997 (1997-12-31), pages 31 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256878A (en) * | 2013-04-17 | 2013-08-21 | 洛阳轴承研究所有限公司 | Simple measuring method for pin type cylindrical roller wall margin |
| CN103256878B (en) * | 2013-04-17 | 2015-11-18 | 洛阳轴承研究所有限公司 | A kind of simple measurement method of pin type cylindrical roller wall margin |
| CN106524869A (en) * | 2016-12-28 | 2017-03-22 | 无锡透平叶片有限公司 | Detection device for detecting wall thickness of blade tenon threaded hole |
| CN107036504A (en) * | 2017-06-13 | 2017-08-11 | 江南工业集团有限公司 | A kind of wall thickness measuring device and measuring method |
| CN109000552A (en) * | 2018-10-31 | 2018-12-14 | 东莞市新懿电子材料技术有限公司 | It is a kind of for testing the device and method of round sebific duct wall thickness |
| CN115319539A (en) * | 2022-07-28 | 2022-11-11 | 湖南南方通用航空发动机有限公司 | Thickness measuring tool and method for disc with wall thickness having inclined angle on given diameter |
| CN115319539B (en) * | 2022-07-28 | 2023-07-25 | 湖南南方通用航空发动机有限公司 | Thickness measuring tool and method for disc with inclined wall thickness on given diameter |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20130116 |