CN109780062A - A kind of Engine Crankshaft Journal contact surface area inspection watt - Google Patents
A kind of Engine Crankshaft Journal contact surface area inspection watt Download PDFInfo
- Publication number
- CN109780062A CN109780062A CN201910113404.4A CN201910113404A CN109780062A CN 109780062 A CN109780062 A CN 109780062A CN 201910113404 A CN201910113404 A CN 201910113404A CN 109780062 A CN109780062 A CN 109780062A
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- CN
- China
- Prior art keywords
- watt
- inspection
- crankshaft journal
- surface area
- contact surface
- 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
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 239000003351 stiffener Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 239000011241 protective layer Substances 0.000 claims description 4
- 230000004323 axial length Effects 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 241000446313 Lamella Species 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims 2
- 210000002435 tendon Anatomy 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 10
- 239000010410 layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
Engine Crankshaft Journal contact surface area inspection watt of the invention, watt ontology is examined with work using with the consistent standard test block of Engine Crankshaft Journal outer diameter, one layer of blue oil is uniformly smeared in crankshaft journal surface to be tested, a watt ontology will be examined to be placed with to slide in crankshaft journal surface to be tested, pass through the actual conditions for examining watt simulation crankshaft journal surface to contact with sliding bearing bush, it is whether qualified to judge machining crankshafts to measure revolution mark and effect of the blue oil in inspection watt, the contact area and contact effect of journal surface and sliding bearing bush can accurately be examined, structure is simple, it is easy to operate, detection accuracy is high, reliable in quality.
Description
Technical field
The present invention relates to the inspections watt of one of engine technology Engine Crankshaft Journal contact surface area.
Background technique
Crankshaft is one of most important component in engine, bears the power of connecting rod transmitting, and is passed through after being changed into torque
Other fitments work on crankshaft output driving engine；Crankshaft is subjected to the centrifugal force because of gyrating mass, week at work
The gas inertia power of phase variation and the collective effect of reciprocal inertia force, caused flexion torsion load effect, thus require crankshaft
Have enough strength and stiffness, and require journal surface need it is wear-resisting, work uniformly, balance it is good, conventional crankshafts have been machined
The dimensional accuracy, position precision and surface roughness of axle journal are usually only focused on after, in checkout procedure, and crankshaft is in practical work
In work, the contact area and contact effect of journal surface and sliding bearing bush are also most important, if journal surface and sliding bearing bush
Contact surface is not good, only certain several dot or a certain piece of contact area, discontinuity, destructible lubricating oil film, thus because
Friction damage contact point, while calorific value is big, leads to bearing temperature rise height；Without being directed to journal surface and sliding axle in conventional method
Watt contact area and the tool tested of contact effect, cannot directly, accurately examine journal surface and sliding bearing bush
Contact area and contact effect, cannot ensure that journal surface and sliding bearing bush contact surface are good, uniform force prevents to generate heat
The problem that amount is big and bearing temperature rise is high.
Summary of the invention
The technical problem to be solved by the invention is to provide one kind can accurately examine connecing for journal surface and sliding bearing bush
Contacting surface product and contact effect, structure is simple, easy to operate, and the high Engine Crankshaft Journal contact surface area of detection accuracy is examined
Watt.
Engine Crankshaft Journal contact surface area of the invention is examined watt, it is characterised in that: include standard test block,
Watt ontology is examined, standard test block is outer diameter and the consistent short cylindrical of crankshaft journal outer diameter, and standard test block outer circumference surface is warp
The smooth mirror surface of polishing treatment；Examining watt ontology is wherein one section of arc of circular ring shape, examines watt ontology internal diameter and standard test
Block outer diameter is adapted, and is examined watt ontology by standard test block with constituting, is examined a watt body internal surface to be provided with material hardness low
In the protective layer of crankshaft material；
The flatness of the standard test block, the depth of parallelism≤0.01 mm, and do not allow indent；
The corresponding central angle of the inspection watt ontology is 60 °；
The protective layer is to be attached to the thin plate for examining that a watt ontology inside, material are AlSn6, lamella thickness 5mm；
Standard test block both ends are respectively arranged with the circular groove being recessed axially inward from both ends of the surface, set in circular groove
It is equipped with the rib in cross shape, every rib both ends are fixedly connected on standard test block both ends and are located on the outside of circular groove
Side wall on；
It is described that watt outer body is examined to be respectively arranged with radially raised arc stiffener plate by the position of two close end, often
It is respectively arranged with cylinder boss in the middle part of a stiffener plate, is provided with the screw thread for being capable of fixing attended operation handle in the middle part of cylinder boss
Connecting hole；
Medium position is provided with secondary reinforcing rib between the both ends stiffener plate；
Two sides are additionally provided with assistant reinforcement muscle close to an inspection watt body edges position between the both ends stiffener plate；
The inspection watt ontology, standard test block axial length are 140~160mm.
Engine Crankshaft Journal contact surface area of the invention is examined watt, using with Engine Crankshaft Journal outer diameter
Consistent standard test block uniformly smears one layer of blue oil in crankshaft journal surface to be tested with inspection watt ontology is made, will inspection watt
Ontology is placed with to be slided in crankshaft journal surface to be tested, passes through the reality for examining watt simulation crankshaft journal surface to contact with sliding bearing bush
Border situation, whether revolution mark and effect of the measurement blue oil in inspection watt are qualified to judge machining crankshafts, can accurately examine
The contact area and contact effect of journal surface and sliding bearing bush, structure is simple, and easy to operate, detection accuracy is high, reliable in quality.
Detailed description of the invention
Fig. 1 is the inspection watt body construction signal of Engine Crankshaft Journal contact surface area of embodiment of the present invention inspection watt
Figure；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the standard test block structure schematic diagram of Engine Crankshaft Journal contact surface area of embodiment of the present invention inspection watt；
Fig. 4 is the left view of Fig. 3.
Specific embodiment
As shown, a kind of Engine Crankshaft Journal contact surface area inspection watt, includes standard test block 11, examines
Watt ontology 1 makes outer diameter and the consistent short cylindrical shape standard test block of crankshaft journal outer diameter first according to engine crankshaft drawing
11, standard test block external peripheral surface needs to constitute smooth mirror surface by polishing treatment, and does not allow indent, entire standard inspection
The width for testing block can be controlled in 150 mm or so, and flatness and depth of parallelism control are within 0.01 mm；
Establishing criteria examines block to carry out with inspection watt ontology is made again, and examining watt ontology is that internal diameter and standard test block outer diameter are adapted
Circular ring shape wherein one section of arc, examine watt ontology to choose one section of arc that corresponding central angle is 60 ° in this example；
It is examining watt ontology inner surface to paste the AlSn6 thin plate that a layer thickness is 5 mm again, is preventing in checkout procedure, friction damage
Hurt crankshaft journal surface.
Because the standard test block of short cylindrical shape is carried, inconvenience of taking, and weight is again heavier, to be operated convenient for matching,
The circular groove being recessed axially inward from both ends of the surface is respectively set in standard test block both ends, easy to operate；Further, in circle
Setting is in the rib 12 of cross shape in connected in star, and every rib both ends are fixedly connected on standard test block both ends and are located at circle
On side wall on the outside of connected in star, rib is taken convenient for hand-held.
Similarly, a watt ontology is examined also to carry, inconvenience of taking, and weight is again heavier, to examine convenient for checked operation
Watt outer body is respectively set radially raised arc stiffener plate 5 by the position of two close end, in each stiffener plate 5
Cylinder boss 3 is respectively set in portion, and the threaded connection hole 6 of a M10 is respectively set in the middle part of cylinder boss 3, is connected by two screw threads
Hole 6 is connect, operation handle is fixedly connected with, is extracted by handle and examines watt ontology, and drives inspection watt ontology sliding, it is easy to operate.
Medium position is provided with secondary reinforcing rib between the stiffener plate of both ends, and two sides are close to inspection between the stiffener plate of both ends
It tests a watt body edges position and is additionally provided with assistant reinforcement muscle, further promote operation ease.
This example selection check watt ontology, standard test block axial length are 150mm, small in size, easy to carry, raw material consumption
Take less, it is at low cost, and do not waste experimental material.
When inspection, one layer of blue oil is uniformly first smeared in crankshaft journal surface to be tested, controls the oil film thickness of blue oil at 4 μm
Within, blue oil oil film thickness is measured using wet film thickness gauge, smearing thickness, which meets the requirements, can carry out subsequent survey.In order to operate
Convenient, safety, crankshaft to be tested is placed on the dedicated piling bin of crankshaft, and inspection watt is placed in crankshaft journal surface, it is only necessary to
At the uniform velocity sliding can be several times within the scope of 120 ° of crankshaft journal surface for inspection watt.It is residual in inspection watt by measuring blue oil
Whether stay area and effect qualified to judge machining crankshafts.It is required that blue oil is examining watt upper overall distribution uniform, allow that there are certain
Poor contact on several dots or a few pieces of areas, depending on specifically combining crankshaft to be tested, whole contact area requirement >=
65% or more.Can the blue oil distribution situation inscription rubbing in inspection watt is for future reference on examining record sheet, as crankshaft acceptance(check)
Foundation.
Claims (9)
1. a kind of Engine Crankshaft Journal contact surface area inspection watt, it is characterised in that: include standard test block, inspection watt
Ontology, standard test block are outer diameter and the consistent short cylindrical of crankshaft journal outer diameter, and standard test block outer circumference surface is polished place
The smooth mirror surface of reason；Examining watt ontology is wherein one section of arc of circular ring shape, examines watt ontology internal diameter and standard test block outer diameter
It is adapted, examines watt ontology by standard test block with constituting, a watt body internal surface is examined to be provided with material hardness lower than crankshaft
The protective layer of material.
2. Engine Crankshaft Journal contact surface area inspection watt according to claim 1, it is characterised in that: the standard inspection
Test the flatness of block, the depth of parallelism≤0.01 mm, and do not allow indent.
3. Engine Crankshaft Journal contact surface area inspection watt according to claim 1, it is characterised in that: the inspection watt
The corresponding central angle of ontology is 60 °.
4. Engine Crankshaft Journal contact surface area inspection watt according to claim 1, it is characterised in that: the protective layer
The thin plate that a watt ontology inside, material are AlSn6, lamella thickness 5mm are examined to be attached to.
5. Engine Crankshaft Journal contact surface area inspection watt according to claim 1, it is characterised in that: the standard inspection
It tests block both ends and is respectively arranged with the circular groove being recessed axially inward from both ends of the surface, be provided in circular groove in right-angled intersection
The rib of shape, every rib both ends are fixedly connected on the side wall that standard test block both ends are located on the outside of circular groove.
6. Engine Crankshaft Journal contact surface area inspection watt according to claim 1, it is characterised in that: the inspection watt
Outer body is respectively arranged with radially raised arc stiffener plate, each stiffener plate middle part by the position of two close end
It is respectively arranged with cylinder boss, is provided with the threaded connection hole for being capable of fixing attended operation handle in the middle part of cylinder boss.
7. Engine Crankshaft Journal contact surface area inspection watt according to claim 6, it is characterised in that: the both ends add
Medium position is provided with secondary reinforcing rib between strengthening tendons plate.
8. Engine Crankshaft Journal contact surface area inspection watt according to claim 7, it is characterised in that: the both ends add
Two sides are additionally provided with assistant reinforcement muscle close to an inspection watt body edges position between strengthening tendons plate.
9. Engine Crankshaft Journal contact surface area inspection watt according to claim 1, it is characterised in that: the inspection watt
Ontology, standard test block axial length are 140~160mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910113404.4A CN109780062A (en) | 2019-02-14 | 2019-02-14 | A kind of Engine Crankshaft Journal contact surface area inspection watt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910113404.4A CN109780062A (en) | 2019-02-14 | 2019-02-14 | A kind of Engine Crankshaft Journal contact surface area inspection watt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109780062A true CN109780062A (en) | 2019-05-21 |
Family
ID=66503175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910113404.4A Pending CN109780062A (en) | 2019-02-14 | 2019-02-14 | A kind of Engine Crankshaft Journal contact surface area inspection watt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109780062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074603A (en) * | 2021-03-16 | 2021-07-06 | 上海中船三井造船柴油机有限公司 | Tool and method for detecting fitting degree of crankshaft journal and bearing bush |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008101690A (en) * | 2006-10-19 | 2008-05-01 | Ntn Corp | Crankshaft and general purpose engine |
| CN202646388U (en) * | 2012-07-03 | 2013-01-02 | 浙江显峰汽车配件有限公司 | Thin-walled bearing shell of high-power diesel engine |
| CN103388615A (en) * | 2012-05-10 | 2013-11-13 | 安徽华菱汽车有限公司 | Crankshaft |
| CN103674747A (en) * | 2013-11-21 | 2014-03-26 | 潍柴动力股份有限公司 | Engine bearing bush abrasion test table |
| CN209781470U (en) * | 2019-02-14 | 2019-12-13 | 镇江市高等专科学校 | Engine crankshaft journal surface contact area inspection tile |
-
2019
- 2019-02-14 CN CN201910113404.4A patent/CN109780062A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008101690A (en) * | 2006-10-19 | 2008-05-01 | Ntn Corp | Crankshaft and general purpose engine |
| CN103388615A (en) * | 2012-05-10 | 2013-11-13 | 安徽华菱汽车有限公司 | Crankshaft |
| CN202646388U (en) * | 2012-07-03 | 2013-01-02 | 浙江显峰汽车配件有限公司 | Thin-walled bearing shell of high-power diesel engine |
| CN103674747A (en) * | 2013-11-21 | 2014-03-26 | 潍柴动力股份有限公司 | Engine bearing bush abrasion test table |
| CN209781470U (en) * | 2019-02-14 | 2019-12-13 | 镇江市高等专科学校 | Engine crankshaft journal surface contact area inspection tile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074603A (en) * | 2021-03-16 | 2021-07-06 | 上海中船三井造船柴油机有限公司 | Tool and method for detecting fitting degree of crankshaft journal and bearing bush |
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