Indexing positioning accuracy on-line monitoring system of marine crankshaft bending upset forging and using method thereof
A technology of indexing positioning and monitoring system, which is applied in the field of forging, can solve the problems that cannot be discussed, and achieve the effects of improving indexing positioning accuracy, high measurement accuracy, and convenient operation
Active Publication Date: 2014-07-30
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the traditional process, the above-mentioned crankshaft indexing adjustment is completely operated by visual inspection and experience, and it is impossible to predict the indexing change during the bending and upsetting process. In this way, the indexing accuracy can be imagined
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0047] This embodiment is applied to the bending and upsetting production site of a certain type of large-scale full-fiber crankshaft product in a certain factory. The billet is made of 42CrMo4 steel and weighs 3.5 tons. The part of the billet participating in the deformation is heated to 1180°C. The bending and upsetting process is carried out on a 6000-ton TR method special press. The entire system layout is shown in Figure 2(a). After the billet is hoisted, the position adjustment of the positioning crutches 15 is carried out in full reference to the display value of the monitoring system, so that the indexing reference line of the end face of the multi-turning crank crutches is the same as the theoretical indexing value. During the bending and upsetting process, the maximum indexing deviation of the crankshaft due to uneven deformation force is 2°, which is greatly improved compared with the 6° indexing deviation in the previous production.
[0048] The results of the exam...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the field of forging, and particularly relates to an indexing positioning accuracy on-line monitoring system of marine all-fiber crankshaft bending upset forging and a using method thereof. The indexing positioning accuracy on-line monitoring system is arranged between a forging turn and a positioning turn; and the indexing positioning accuracy on-line monitoring system comprises a laser transmitter, a magnetic base, a laser projection line display target, a high-definition camera and a computer (provided with a pattern recognition program, an angle measurement program and a digital display interface), wherein the laser transmitter is provided with a beam-splitting prism. The indexing positioning accuracy on-line monitoring system disclosed by the invention can be used for acquiring, measuring and displaying the included angle between the indexing reference line of a bellcrank end surface and a horizontal direction in real time in the forming process of the marine all-fiber crankshaft bending upset forging, and realizing the on-line accurate measurement of a certain geometric accuracy dimension of a forged piece in the forging process by adopting lasers as angle transmitting media, ensures that operators can read conveniently by displaying measured values on the screen of the computer and can be invented and applied to provide a basis for the correction of the indexing deviation of a bending upset forging process.
Description
technical field [0001] The invention belongs to the field of forging, and specifically relates to an on-line monitoring system for indexing and positioning accuracy of full-fiber crankshaft bending and upsetting for ships and a method for using it. Real-time on-line monitoring of the indexing between the positioning crutches provides a basis for the correction of the indexing deviation of the bending and upsetting process. Background technique [0002] The power of a large marine engine is generally above 1600kW. The crankshaft is the most important part. The length of a single engine is more than 3m, the weight is more than 1 ton, and its value accounts for about 10-15% of the whole machine. Since the quality of crankshaft directly affects the reliability of engine operation, there are high requirements for the strength, toughness and fatigue strength of crankshaft forgings. In this case, some medium and high-speed machines use full-fiber crankshafts with better mechanical...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01C15/00G01B11/26B21K1/08
Inventor 贾震孙明月李殿中邓军疆赫明玖
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI