CN220136295U - Check tool for rapidly detecting flatness of balance weight assembly surface of large-sized crankshaft - Google Patents
Check tool for rapidly detecting flatness of balance weight assembly surface of large-sized crankshaft Download PDFInfo
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- CN220136295U CN220136295U CN202321559020.3U CN202321559020U CN220136295U CN 220136295 U CN220136295 U CN 220136295U CN 202321559020 U CN202321559020 U CN 202321559020U CN 220136295 U CN220136295 U CN 220136295U
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- detection
- plate
- oiling
- flatness
- balance weight
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- 238000001514 detection method Methods 0.000 claims abstract description 84
- 238000012031 short term test Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a checking fixture for rapidly detecting flatness of a balance weight assembly surface of a large-sized crankshaft, which consists of a checking body and an oiling plate; the detecting body comprises a detecting flat plate, a handle I, a guide cylindrical pin and a positioning pin; the handles I are arranged at two ends of the detection plate; the guide cylindrical pin, the positioning pin and the detection surface of the detection flat plate are arranged on the same surface; the oiling plate comprises an oiling plate, a handle II and a connecting block; connecting blocks are fixedly arranged on two sides of the top surface of the oiling plate respectively; the handle II is arranged on the connecting block; the bottom surface of the oiling plate is an oiling surface. The utility model has simple structure, low use cost and simple operation, can realize the flatness detection of the crankshaft counterweight assembly surface in any occasion, can finish the detection within 5min, and has higher detection efficiency than the detection efficiency of equipment such as a 3D detector.
Description
Technical Field
The utility model belongs to the technical field of crankshaft machining detection, and particularly relates to a detection tool for rapidly detecting flatness of a large-scale crankshaft balance weight assembly surface.
Background
The crankshaft is a core component of the engine, and is often in a high-speed rotation state during the working process in the engine, and if the crankshaft is unbalanced, a pressure is generated on a supporting structure and the crankshaft during the rotation process, and the problems of large vibration, noise, abrasion and the like are caused. In order to reduce vibration, reduce noise and improve the service life of the supporting component, the dynamic balance performance of the rotating process of the supporting component is very high. The large forged steel crankshafts used in ships, large generator sets and the like are limited by technology and production equipment, and the large forged steel crankshafts are often realized by adopting a mode of separately producing and processing the crankshafts and the balancing weights and then assembling the crankshafts and the balancing weights together. The counterweight and the crankshaft body of the large-sized crankshaft are generally fastened and connected through high-strength bolts after finishing, and in order to ensure that the counterweight is assembled on the crankshaft with good stability, the counterweight is required to be in good contact with the crankshaft assembling surface, so that the requirement on the flatness of the crankshaft counterweight assembling surface is high. Because the crankshaft counterweight assembly surface is generally directly milled by a milling machine or a milling and turning composite machining center, the requirement on the flatness of the assembly surface for reducing the machining difficulty is generally a certain area around the threaded hole of the crankshaft counterweight. The counterweight of large-scale bent axle generally needs to adopt more than two fastening bolts, needs to examine the planarization of two at least faces promptly when examining counterweight assembly face planarization, and adopts current utensil of examining to be unable convenient, quick, accurate detection in the production process, and large-scale instrument detects the degree of difficulty height, inconvenient, inefficiency, with high costs.
In order to detect the flatness of the assembly surface, the prior art uses a whole lower flat oil film gauge to detect the flatness of the assembly surface on the whole surface or adopts a 3D detector to detect the flatness of the assembly surface.
According to the existing detection method, the detection tool is an integral flat plate, so that a specific area cannot be evaluated independently, or a high-cost 3D detector is needed, and the detection efficiency is low.
Disclosure of Invention
The utility model aims to provide a gauge for rapidly detecting the flatness of a balance and reassembly surface of a large-sized crankshaft, aiming at the defects of the existing detection means. The detecting tool can rapidly and accurately detect the flatness of the assembly surface of the large crankshaft counterweight, is simple and clear to operate, is light and easy to carry, and is low in manufacturing cost.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a checking fixture for rapidly detecting flatness of a large crankshaft balance weight assembly surface comprises a checking body and an oiling plate; the detecting body comprises a detecting flat plate, a handle I, a guide cylindrical pin and a positioning pin; the handles I are arranged at two ends of the detection plate; the guide cylindrical pin, the positioning pin and the detection surface of the detection flat plate are arranged on the same surface; the oiling plate comprises an oiling plate, a handle II and a connecting block; connecting blocks are fixedly arranged on two sides of the top surface of the oiling plate respectively; the handle II is arranged on the connecting block; the bottom surface of the oiling plate is an oiling surface.
When the device is used, blue oil (or red lead) with a certain thickness can be uniformly smeared on the detection surface of the detection flat plate through the oiling plate, the thickness of the blue oil (or red lead) can be quantitatively controlled through oil film rolling measurement, and then the detection surface of the detection flat plate is placed on the assembly surface of the large crankshaft counterweight through the locating pin to detect the flatness of a required detection area; when in detection, the detection surface coated with blue oil (or red lead) with certain thickness is attached to the detected assembly surface, and the detection tool is slightly slid, so that the blue oil (or red lead) is copied on the assembly surface, and whether the assembly surface is completely covered by the blue oil (or red lead) can be confirmed by visual inspection, if the area which is not covered by the blue oil exists, whether the coverage proportion meets the process requirement is judged according to the receiving standard, thereby realizing rapid detection and judgment of whether the assembly surface is qualified or not.
The utility model further describes that the flatness of the detection surface of the detection plate is required to be within 10 mu m; the flatness of the oiling surface of the oiling plate is required to be within 5 mu m so as to ensure the precision of the gauge. The detection flat plate and the oiling plate are made of die steel materials, and are subjected to vacuum quenching and low-temperature tempering treatment, so that the surface hardness is ensured to be more than 55 HRC.
The utility model further discloses that the four guide cylindrical pins are distributed at four corners of the detection plate.
The utility model further provides that the locating pin is arranged on the detection surface of the detection plate and is positioned on the transverse central line of the detection surface.
The utility model further discloses that the locating pin is fixedly arranged on the detection flat plate through a screw.
The utility model further discloses that the detection surfaces of the detection plate are positioned on two sides of the bottom surface of the detection plate, and the middle part of the bottom surface of the detection plate is provided with a groove surface.
The crankshaft counterweight assembly surface detection device is provided with the positioning pin and the two measuring surfaces, and the two measuring surfaces can be respectively attached to the threaded hole areas of the crankshaft counterweight assembly surface through the positioning pin to detect the planeness of the two surfaces, so that the contact surface proportion of the specific areas around the threaded holes of the crankshaft counterweight assembly surface can be conveniently and rapidly detected, and the counterweight assembly is ensured to meet the technical requirements.
The utility model further discloses that the connecting blocks are fixedly arranged at the two ends of the upper oil plate through screws.
The utility model further discloses that the oil coating surface of the oil coating plate is provided with a counter bore matched with the positioning pin.
In the utility model, the positioning pin in the detection body is made of brass material and is used for positioning the screw hole of the balance weight and is fixed on the detection flat plate through a bolt. The guide cylindrical pin is used for limiting the sliding and guiding of the assembly surface of the detection flat plate and the crankshaft balance block. The handle I is used for placing the gauge on an assembly surface to be detected and slightly sliding back and forth after a certain pressure is given. The oiling plate is used for guaranteeing that the uniform thickness of oiling on the surface of the detection flat plate of the detection body is controllable.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model has simple structure, low use cost and simple operation, can realize the flatness detection of the crankshaft counterweight assembly surface in any occasion, can finish the detection within 5min, and has higher detection efficiency than the detection efficiency of equipment such as a 3D detector.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
Fig. 2 is a bottom view of fig. 1.
Fig. 3 is a schematic structural view of an oiled board according to an embodiment of the utility model.
Fig. 4 is a bottom view of fig. 3.
Fig. 5 is a schematic view of section A-A of fig. 3.
Fig. 6 is a schematic perspective view of an oiled board according to an embodiment of the utility model.
Reference numeral name: 1-detecting plate, 101-detecting surface; 2, a handle I; 3-guiding cylindrical pins; 4-locating pins; 5-oiling plates and 501-oiling surfaces; 6, a handle II; 7-connecting block.
Description of the embodiments
The following further detailed description of the present utility model, in conjunction with the accompanying drawings and examples, is intended to illustrate the utility model and should not be taken as limiting the utility model.
Examples
A checking fixture for quickly detecting flatness of a large crankshaft balance weight assembly surface comprises a checking body and an oiling plate.
As shown in fig. 1 and 2, the detecting body comprises a detecting flat plate 1, a handle I2, a guide cylindrical pin 3 and a positioning pin 4; the handles I2 are arranged at two ends of the detection plate 1; the guide cylindrical pin 3, the positioning pin 4 and the detection surface 101 of the detection flat plate 1 are arranged on the same surface.
As shown in fig. 3-6, the oiling plate comprises an oiling plate 5, a handle II 6 and a connecting block 7; connecting blocks 7 are fixedly arranged on two sides of the top surface of the oiling plate 5 respectively; the handle II 6 is arranged on the connecting block 7; the bottom surface of the oiling plate 5 is an oiling surface 501.
The flatness of the detection surface 101 of the detection plate 1 is required to be within 10 μm; the flatness of the oiling surface 501 of the oiling plate 5 is required to be within 5 μm.
Further, the four guide cylindrical pins 3 are arranged and distributed at four corners of the detection flat plate 1.
Further, the positioning pin 4 is provided on the detection surface 101 of the detection plate 1 and is located on the transverse center line of the detection surface 101. The locating pin 4 is fixedly arranged on the detection flat plate 1 through a screw.
Further, the detection surfaces 101 of the detection plate 1 are located at two sides of the bottom surface of the detection plate 1, and a groove surface is arranged in the middle of the bottom surface of the detection plate 1.
Further, the connecting blocks 7 are fixedly arranged at two ends of the upper oil plate 5 through screws. The oiling surface 501 of the oiling plate 5 is provided with a counter bore (as shown in fig. 4) matched with the positioning pin 4.
It is to be understood that the above-described embodiments are merely illustrative of the utility model and are not intended to limit the practice of the utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art; it is not necessary here nor is it exhaustive of all embodiments; and obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (8)
1. A examine utensil that large-scale bent axle balance weight assembly face flatness short-term test, its characterized in that: the device consists of a detection body and an oiling plate;
the detecting body comprises a detecting flat plate (1), a handle I (2), a guide cylindrical pin (3) and a positioning pin (4); the handles I (2) are arranged at two ends of the detection flat plate (1); the guide cylindrical pin (3), the positioning pin (4) and the detection surface (101) of the detection flat plate (1) are arranged on the same surface;
the oiling plate comprises an oiling plate (5), a handle II (6) and a connecting block (7); connecting blocks (7) are fixedly arranged on two sides of the top surface of the oiling plate (5) respectively; the handle II (6) is arranged on the connecting block (7); the bottom surface of the oiling plate (5) is an oiling surface (501).
2. The gauge for rapid flatness detection of a large crankshaft balance weight assembly surface of claim 1, wherein: the flatness of the detection surface (101) of the detection plate (1) is required to be within 10 mu m; the flatness of the oiling surface (501) of the oiling plate (5) is required to be within 5 mu m.
3. The gauge for rapid flatness detection of a large crankshaft balance weight assembly surface of claim 1, wherein: the four guide cylindrical pins (3) are arranged and distributed at four corners of the detection plate (1).
4. The gauge for rapid flatness detection of a large crankshaft balance weight assembly surface of claim 1, wherein: the positioning pin (4) is arranged on the detection surface (101) of the detection flat plate (1) and is positioned on the transverse central line of the detection surface (101).
5. The gauge for rapid flatness detection of a large crankshaft balance weight assembly surface according to claim 1 or 4, wherein: the locating pin (4) is fixedly arranged on the detection flat plate (1) through a screw.
6. The gauge for rapid flatness detection of a large crankshaft balance weight assembly surface of claim 1, wherein: the detection surface (101) of the detection plate (1) is positioned on two sides of the bottom surface of the detection plate (1), and a groove surface is arranged in the middle of the bottom surface of the detection plate (1).
7. The gauge for rapid flatness detection of a large crankshaft balance weight assembly surface of claim 1, wherein: the connecting blocks (7) are fixedly arranged at two ends of the oiling plate (5) through screws.
8. The gauge for rapid flatness detection of a large crankshaft balance weight assembly surface of claim 1, wherein: and a counter bore matched with the positioning pin (4) is formed in the oiling surface (501) of the oiling plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321559020.3U CN220136295U (en) | 2023-06-19 | 2023-06-19 | Check tool for rapidly detecting flatness of balance weight assembly surface of large-sized crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321559020.3U CN220136295U (en) | 2023-06-19 | 2023-06-19 | Check tool for rapidly detecting flatness of balance weight assembly surface of large-sized crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220136295U true CN220136295U (en) | 2023-12-05 |
Family
ID=88962989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321559020.3U Active CN220136295U (en) | 2023-06-19 | 2023-06-19 | Check tool for rapidly detecting flatness of balance weight assembly surface of large-sized crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220136295U (en) |
-
2023
- 2023-06-19 CN CN202321559020.3U patent/CN220136295U/en active Active
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